WebView.java revision fcba23536b1b432a5977e1ba4ea70ae0ff5aed4a
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.annotation.Widget; 20import android.app.AlertDialog; 21import android.content.BroadcastReceiver; 22import android.content.ClipboardManager; 23import android.content.Context; 24import android.content.DialogInterface; 25import android.content.DialogInterface.OnCancelListener; 26import android.content.Intent; 27import android.content.IntentFilter; 28import android.content.pm.PackageInfo; 29import android.content.pm.PackageManager; 30import android.content.res.Configuration; 31import android.database.DataSetObserver; 32import android.graphics.Bitmap; 33import android.graphics.BitmapFactory; 34import android.graphics.BitmapShader; 35import android.graphics.Canvas; 36import android.graphics.Color; 37import android.graphics.CornerPathEffect; 38import android.graphics.DrawFilter; 39import android.graphics.Paint; 40import android.graphics.PaintFlagsDrawFilter; 41import android.graphics.Picture; 42import android.graphics.Point; 43import android.graphics.Rect; 44import android.graphics.RectF; 45import android.graphics.Region; 46import android.graphics.SurfaceTexture; 47import android.graphics.Shader; 48import android.graphics.drawable.Drawable; 49import android.net.Proxy; 50import android.net.ProxyProperties; 51import android.net.Uri; 52import android.net.http.SslCertificate; 53import android.os.AsyncTask; 54import android.os.Bundle; 55import android.os.Handler; 56import android.os.Message; 57import android.provider.Settings; 58import android.speech.tts.TextToSpeech; 59import android.text.Selection; 60import android.text.Spannable; 61import android.util.AttributeSet; 62import android.util.EventLog; 63import android.util.Log; 64import android.view.Gravity; 65import android.view.HardwareCanvas; 66import android.view.InputDevice; 67import android.view.KeyCharacterMap; 68import android.view.KeyEvent; 69import android.view.LayoutInflater; 70import android.view.MotionEvent; 71import android.view.ScaleGestureDetector; 72import android.view.SoundEffectConstants; 73import android.view.VelocityTracker; 74import android.view.View; 75import android.view.ViewConfiguration; 76import android.view.ViewGroup; 77import android.view.ViewParent; 78import android.view.ViewTreeObserver; 79import android.view.accessibility.AccessibilityManager; 80import android.view.inputmethod.EditorInfo; 81import android.view.inputmethod.InputConnection; 82import android.view.inputmethod.InputMethodManager; 83import android.webkit.WebTextView.AutoCompleteAdapter; 84import android.webkit.WebViewCore.EventHub; 85import android.webkit.WebViewCore.TouchEventData; 86import android.webkit.WebViewCore.TouchHighlightData; 87import android.widget.AbsoluteLayout; 88import android.widget.Adapter; 89import android.widget.AdapterView; 90import android.widget.AdapterView.OnItemClickListener; 91import android.widget.ArrayAdapter; 92import android.widget.CheckedTextView; 93import android.widget.LinearLayout; 94import android.widget.ListView; 95import android.widget.OverScroller; 96import android.widget.Toast; 97 98import java.io.File; 99import java.io.FileInputStream; 100import java.io.FileNotFoundException; 101import java.io.FileOutputStream; 102import java.net.URLDecoder; 103import java.util.ArrayList; 104import java.util.HashMap; 105import java.util.HashSet; 106import java.util.List; 107import java.util.Map; 108import java.util.Set; 109import java.util.Vector; 110import java.util.regex.Matcher; 111import java.util.regex.Pattern; 112 113import junit.framework.Assert; 114 115/** 116 * <p>A View that displays web pages. This class is the basis upon which you 117 * can roll your own web browser or simply display some online content within your Activity. 118 * It uses the WebKit rendering engine to display 119 * web pages and includes methods to navigate forward and backward 120 * through a history, zoom in and out, perform text searches and more.</p> 121 * <p>To enable the built-in zoom, set 122 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 123 * (introduced in API version 3). 124 * <p>Note that, in order for your Activity to access the Internet and load web pages 125 * in a WebView, you must add the {@code INTERNET} permissions to your 126 * Android Manifest file:</p> 127 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 128 * 129 * <p>This must be a child of the <a 130 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 131 * element.</p> 132 * 133 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 134 * tutorial</a>.</p> 135 * 136 * <h3>Basic usage</h3> 137 * 138 * <p>By default, a WebView provides no browser-like widgets, does not 139 * enable JavaScript and web page errors are ignored. If your goal is only 140 * to display some HTML as a part of your UI, this is probably fine; 141 * the user won't need to interact with the web page beyond reading 142 * it, and the web page won't need to interact with the user. If you 143 * actually want a full-blown web browser, then you probably want to 144 * invoke the Browser application with a URL Intent rather than show it 145 * with a WebView. For example: 146 * <pre> 147 * Uri uri = Uri.parse("http://www.example.com"); 148 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 149 * startActivity(intent); 150 * </pre> 151 * <p>See {@link android.content.Intent} for more information.</p> 152 * 153 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 154 * or set the entire Activity window as a WebView during {@link 155 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 156 * <pre class="prettyprint"> 157 * WebView webview = new WebView(this); 158 * setContentView(webview); 159 * </pre> 160 * 161 * <p>Then load the desired web page:</p> 162 * <pre> 163 * // Simplest usage: note that an exception will NOT be thrown 164 * // if there is an error loading this page (see below). 165 * webview.loadUrl("http://slashdot.org/"); 166 * 167 * // OR, you can also load from an HTML string: 168 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 169 * webview.loadData(summary, "text/html", "utf-8"); 170 * // ... although note that there are restrictions on what this HTML can do. 171 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 172 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 173 * </pre> 174 * 175 * <p>A WebView has several customization points where you can add your 176 * own behavior. These are:</p> 177 * 178 * <ul> 179 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 180 * This class is called when something that might impact a 181 * browser UI happens, for instance, progress updates and 182 * JavaScript alerts are sent here (see <a 183 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 184 * </li> 185 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 186 * It will be called when things happen that impact the 187 * rendering of the content, eg, errors or form submissions. You 188 * can also intercept URL loading here (via {@link 189 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 190 * shouldOverrideUrlLoading()}).</li> 191 * <li>Modifying the {@link android.webkit.WebSettings}, such as 192 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 193 * setJavaScriptEnabled()}. </li> 194 * <li>Adding JavaScript-to-Java interfaces with the {@link 195 * android.webkit.WebView#addJavascriptInterface} method. 196 * This lets you bind Java objects into the WebView so they can be 197 * controlled from the web pages JavaScript.</li> 198 * </ul> 199 * 200 * <p>Here's a more complicated example, showing error handling, 201 * settings, and progress notification:</p> 202 * 203 * <pre class="prettyprint"> 204 * // Let's display the progress in the activity title bar, like the 205 * // browser app does. 206 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 207 * 208 * webview.getSettings().setJavaScriptEnabled(true); 209 * 210 * final Activity activity = this; 211 * webview.setWebChromeClient(new WebChromeClient() { 212 * public void onProgressChanged(WebView view, int progress) { 213 * // Activities and WebViews measure progress with different scales. 214 * // The progress meter will automatically disappear when we reach 100% 215 * activity.setProgress(progress * 1000); 216 * } 217 * }); 218 * webview.setWebViewClient(new WebViewClient() { 219 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 220 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 221 * } 222 * }); 223 * 224 * webview.loadUrl("http://slashdot.org/"); 225 * </pre> 226 * 227 * <h3>Cookie and window management</h3> 228 * 229 * <p>For obvious security reasons, your application has its own 230 * cache, cookie store etc.—it does not share the Browser 231 * application's data. Cookies are managed on a separate thread, so 232 * operations like index building don't block the UI 233 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 234 * if you want to use cookies in your application. 235 * </p> 236 * 237 * <p>By default, requests by the HTML to open new windows are 238 * ignored. This is true whether they be opened by JavaScript or by 239 * the target attribute on a link. You can customize your 240 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 241 * and render them in whatever manner you want.</p> 242 * 243 * <p>The standard behavior for an Activity is to be destroyed and 244 * recreated when the device orientation or any other configuration changes. This will cause 245 * the WebView to reload the current page. If you don't want that, you 246 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 247 * changes, and then just leave the WebView alone. It'll automatically 248 * re-orient itself as appropriate. Read <a 249 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 250 * more information about how to handle configuration changes during runtime.</p> 251 * 252 * 253 * <h3>Building web pages to support different screen densities</h3> 254 * 255 * <p>The screen density of a device is based on the screen resolution. A screen with low density 256 * has fewer available pixels per inch, where a screen with high density 257 * has more — sometimes significantly more — pixels per inch. The density of a 258 * screen is important because, other things being equal, a UI element (such as a button) whose 259 * height and width are defined in terms of screen pixels will appear larger on the lower density 260 * screen and smaller on the higher density screen. 261 * For simplicity, Android collapses all actual screen densities into three generalized densities: 262 * high, medium, and low.</p> 263 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 264 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 265 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 266 * are bigger). 267 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 268 * you (as a web developer) target screens with different screen densities.</p> 269 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 270 * <ul> 271 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 272 * default scaling factor used for the current device. For example, if the value of {@code 273 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 274 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 275 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 276 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 277 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 278 * (discussed below), then you can stop this default scaling behavior.</li> 279 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 280 * densities for which this style sheet is to be used. The corresponding value should be either 281 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 282 * density, or high density screens, respectively. For example: 283 * <pre> 284 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 285 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 286 * which is the high density pixel ratio.</p> 287 * </li> 288 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 289 * this to specify the target density for which the web page is designed, using the following 290 * values: 291 * <ul> 292 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 293 * occurs.</li> 294 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 295 * as appropriate.</li> 296 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 297 * low density screens scale down. This is also the default behavior.</li> 298 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 299 * as appropriate.</li> 300 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 301 * values are 70-400).</li> 302 * </ul> 303 * <p>Here's an example meta tag to specify the target density:</p> 304 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 305 * </ul> 306 * <p>If you want to modify your web page for different densities, by using the {@code 307 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 308 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 309 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 310 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 311 * 312 * 313 */ 314@Widget 315public class WebView extends AbsoluteLayout 316 implements ViewTreeObserver.OnGlobalFocusChangeListener, 317 ViewGroup.OnHierarchyChangeListener { 318 319 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 320 public void onGlobalLayout() { 321 if (isShown()) { 322 setGLRectViewport(); 323 } 324 } 325 } 326 327 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 328 public void onScrollChanged() { 329 if (isShown()) { 330 setGLRectViewport(); 331 } 332 } 333 } 334 335 // The listener to capture global layout change event. 336 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 337 338 // The listener to capture scroll event. 339 private InnerScrollChangedListener mScrollChangedListener = null; 340 341 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 342 // the screen all-the-time. Good for profiling our drawing code 343 static private final boolean AUTO_REDRAW_HACK = false; 344 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 345 private boolean mAutoRedraw; 346 347 // Reference to the AlertDialog displayed by InvokeListBox. 348 // It's used to dismiss the dialog in destroy if not done before. 349 private AlertDialog mListBoxDialog = null; 350 351 static final String LOGTAG = "webview"; 352 353 private ZoomManager mZoomManager; 354 355 private final Rect mGLRectViewport = new Rect(); 356 private final Rect mViewRectViewport = new Rect(); 357 private boolean mGLViewportEmpty = false; 358 359 /** 360 * Transportation object for returning WebView across thread boundaries. 361 */ 362 public class WebViewTransport { 363 private WebView mWebview; 364 365 /** 366 * Set the WebView to the transportation object. 367 * @param webview The WebView to transport. 368 */ 369 public synchronized void setWebView(WebView webview) { 370 mWebview = webview; 371 } 372 373 /** 374 * Return the WebView object. 375 * @return WebView The transported WebView object. 376 */ 377 public synchronized WebView getWebView() { 378 return mWebview; 379 } 380 } 381 382 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 383 private final CallbackProxy mCallbackProxy; 384 385 private final WebViewDatabase mDatabase; 386 387 // SSL certificate for the main top-level page (if secure) 388 private SslCertificate mCertificate; 389 390 // Native WebView pointer that is 0 until the native object has been 391 // created. 392 private int mNativeClass; 393 // This would be final but it needs to be set to null when the WebView is 394 // destroyed. 395 private WebViewCore mWebViewCore; 396 // Handler for dispatching UI messages. 397 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 398 private WebTextView mWebTextView; 399 // Used to ignore changes to webkit text that arrives to the UI side after 400 // more key events. 401 private int mTextGeneration; 402 403 /* package */ void incrementTextGeneration() { mTextGeneration++; } 404 405 // Used by WebViewCore to create child views. 406 /* package */ final ViewManager mViewManager; 407 408 // Used to display in full screen mode 409 PluginFullScreenHolder mFullScreenHolder; 410 411 /** 412 * Position of the last touch event in pixels. 413 * Use integer to prevent loss of dragging delta calculation accuracy; 414 * which was done in float and converted to integer, and resulted in gradual 415 * and compounding touch position and view dragging mismatch. 416 */ 417 private int mLastTouchX; 418 private int mLastTouchY; 419 420 /** 421 * Time of the last touch event. 422 */ 423 private long mLastTouchTime; 424 425 /** 426 * Time of the last time sending touch event to WebViewCore 427 */ 428 private long mLastSentTouchTime; 429 430 /** 431 * The minimum elapsed time before sending another ACTION_MOVE event to 432 * WebViewCore. This really should be tuned for each type of the devices. 433 * For example in Google Map api test case, it takes Dream device at least 434 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 435 * triggering the layout and drawing the picture. While the same process 436 * takes 60+ms on the current high speed device. If we make 437 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 438 * to WebViewCore queue and the real layout and draw events will be pushed 439 * to further, which slows down the refresh rate. Choose 50 to favor the 440 * current high speed devices. For Dream like devices, 100 is a better 441 * choice. Maybe make this in the buildspec later. 442 * (Update 12/14/2010: changed to 0 since current device should be able to 443 * handle the raw events and Map team voted to have the raw events too. 444 */ 445 private static final int TOUCH_SENT_INTERVAL = 0; 446 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 447 448 /** 449 * Helper class to get velocity for fling 450 */ 451 VelocityTracker mVelocityTracker; 452 private int mMaximumFling; 453 private float mLastVelocity; 454 private float mLastVelX; 455 private float mLastVelY; 456 457 // The id of the native layer being scrolled. 458 private int mScrollingLayer; 459 private Rect mScrollingLayerRect = new Rect(); 460 461 // only trigger accelerated fling if the new velocity is at least 462 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 463 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 464 465 /** 466 * Touch mode 467 */ 468 private int mTouchMode = TOUCH_DONE_MODE; 469 private static final int TOUCH_INIT_MODE = 1; 470 private static final int TOUCH_DRAG_START_MODE = 2; 471 private static final int TOUCH_DRAG_MODE = 3; 472 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 473 private static final int TOUCH_SHORTPRESS_MODE = 5; 474 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 475 private static final int TOUCH_DONE_MODE = 7; 476 private static final int TOUCH_PINCH_DRAG = 8; 477 private static final int TOUCH_DRAG_LAYER_MODE = 9; 478 479 // Whether to forward the touch events to WebCore 480 // Can only be set by WebKit via JNI. 481 private boolean mForwardTouchEvents = false; 482 483 // Whether to prevent default during touch. The initial value depends on 484 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 485 // for touch down. Otherwise UI will wait for the answer of the first 486 // confirmed move before taking over the control. 487 private static final int PREVENT_DEFAULT_NO = 0; 488 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 489 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 490 private static final int PREVENT_DEFAULT_YES = 3; 491 private static final int PREVENT_DEFAULT_IGNORE = 4; 492 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 493 494 // true when the touch movement exceeds the slop 495 private boolean mConfirmMove; 496 497 // if true, touch events will be first processed by WebCore, if prevent 498 // default is not set, the UI will continue handle them. 499 private boolean mDeferTouchProcess; 500 501 // to avoid interfering with the current touch events, track them 502 // separately. Currently no snapping or fling in the deferred process mode 503 private int mDeferTouchMode = TOUCH_DONE_MODE; 504 private float mLastDeferTouchX; 505 private float mLastDeferTouchY; 506 507 // To keep track of whether the current drag was initiated by a WebTextView, 508 // so that we know not to hide the cursor 509 boolean mDragFromTextInput; 510 511 // Whether or not to draw the cursor ring. 512 private boolean mDrawCursorRing = true; 513 514 // true if onPause has been called (and not onResume) 515 private boolean mIsPaused; 516 517 private HitTestResult mInitialHitTestResult; 518 519 /** 520 * Customizable constant 521 */ 522 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 523 private int mTouchSlopSquare; 524 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 525 private int mDoubleTapSlopSquare; 526 // pre-computed density adjusted navigation slop 527 private int mNavSlop; 528 // This should be ViewConfiguration.getTapTimeout() 529 // But system time out is 100ms, which is too short for the browser. 530 // In the browser, if it switches out of tap too soon, jump tap won't work. 531 private static final int TAP_TIMEOUT = 200; 532 // This should be ViewConfiguration.getLongPressTimeout() 533 // But system time out is 500ms, which is too short for the browser. 534 // With a short timeout, it's difficult to treat trigger a short press. 535 private static final int LONG_PRESS_TIMEOUT = 1000; 536 // needed to avoid flinging after a pause of no movement 537 private static final int MIN_FLING_TIME = 250; 538 // draw unfiltered after drag is held without movement 539 private static final int MOTIONLESS_TIME = 100; 540 // The amount of content to overlap between two screens when going through 541 // pages with the space bar, in pixels. 542 private static final int PAGE_SCROLL_OVERLAP = 24; 543 544 /** 545 * These prevent calling requestLayout if either dimension is fixed. This 546 * depends on the layout parameters and the measure specs. 547 */ 548 boolean mWidthCanMeasure; 549 boolean mHeightCanMeasure; 550 551 // Remember the last dimensions we sent to the native side so we can avoid 552 // sending the same dimensions more than once. 553 int mLastWidthSent; 554 int mLastHeightSent; 555 // Since view height sent to webkit could be fixed to avoid relayout, this 556 // value records the last sent actual view height. 557 int mLastActualHeightSent; 558 559 private int mContentWidth; // cache of value from WebViewCore 560 private int mContentHeight; // cache of value from WebViewCore 561 562 // Need to have the separate control for horizontal and vertical scrollbar 563 // style than the View's single scrollbar style 564 private boolean mOverlayHorizontalScrollbar = true; 565 private boolean mOverlayVerticalScrollbar = false; 566 567 // our standard speed. this way small distances will be traversed in less 568 // time than large distances, but we cap the duration, so that very large 569 // distances won't take too long to get there. 570 private static final int STD_SPEED = 480; // pixels per second 571 // time for the longest scroll animation 572 private static final int MAX_DURATION = 750; // milliseconds 573 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 574 575 // Used by OverScrollGlow 576 OverScroller mScroller; 577 578 private boolean mInOverScrollMode = false; 579 private static Paint mOverScrollBackground; 580 private static Paint mOverScrollBorder; 581 582 private boolean mWrapContent; 583 private static final int MOTIONLESS_FALSE = 0; 584 private static final int MOTIONLESS_PENDING = 1; 585 private static final int MOTIONLESS_TRUE = 2; 586 private static final int MOTIONLESS_IGNORE = 3; 587 private int mHeldMotionless; 588 589 // An instance for injecting accessibility in WebViews with disabled 590 // JavaScript or ones for which no accessibility script exists 591 private AccessibilityInjector mAccessibilityInjector; 592 593 // flag indicating if accessibility script is injected so we 594 // know to handle Shift and arrows natively first 595 private boolean mAccessibilityScriptInjected; 596 597 // the color used to highlight the touch rectangles 598 private static final int mHightlightColor = 0x33000000; 599 // the round corner for the highlight path 600 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 601 // the region indicating where the user touched on the screen 602 private Region mTouchHighlightRegion = new Region(); 603 // the paint for the touch highlight 604 private Paint mTouchHightlightPaint; 605 // debug only 606 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 607 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 608 private Paint mTouchCrossHairColor; 609 private int mTouchHighlightX; 610 private int mTouchHighlightY; 611 612 // Basically this proxy is used to tell the Video to update layer tree at 613 // SetBaseLayer time and to pause when WebView paused. 614 private HTML5VideoViewProxy mHTML5VideoViewProxy; 615 616 /* 617 * Private message ids 618 */ 619 private static final int REMEMBER_PASSWORD = 1; 620 private static final int NEVER_REMEMBER_PASSWORD = 2; 621 private static final int SWITCH_TO_SHORTPRESS = 3; 622 private static final int SWITCH_TO_LONGPRESS = 4; 623 private static final int RELEASE_SINGLE_TAP = 5; 624 private static final int REQUEST_FORM_DATA = 6; 625 private static final int RESUME_WEBCORE_PRIORITY = 7; 626 private static final int DRAG_HELD_MOTIONLESS = 8; 627 private static final int AWAKEN_SCROLL_BARS = 9; 628 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 629 private static final int SCROLL_SELECT_TEXT = 11; 630 631 632 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 633 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 634 635 /* 636 * Package message ids 637 */ 638 static final int SCROLL_TO_MSG_ID = 101; 639 static final int NEW_PICTURE_MSG_ID = 105; 640 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 641 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 642 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 643 static final int UPDATE_ZOOM_RANGE = 109; 644 static final int UNHANDLED_NAV_KEY = 110; 645 static final int CLEAR_TEXT_ENTRY = 111; 646 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 647 static final int SHOW_RECT_MSG_ID = 113; 648 static final int LONG_PRESS_CENTER = 114; 649 static final int PREVENT_TOUCH_ID = 115; 650 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 651 // obj=Rect in doc coordinates 652 static final int INVAL_RECT_MSG_ID = 117; 653 static final int REQUEST_KEYBOARD = 118; 654 static final int DO_MOTION_UP = 119; 655 static final int SHOW_FULLSCREEN = 120; 656 static final int HIDE_FULLSCREEN = 121; 657 static final int DOM_FOCUS_CHANGED = 122; 658 static final int REPLACE_BASE_CONTENT = 123; 659 static final int FORM_DID_BLUR = 124; 660 static final int RETURN_LABEL = 125; 661 static final int FIND_AGAIN = 126; 662 static final int CENTER_FIT_RECT = 127; 663 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 664 static final int SET_SCROLLBAR_MODES = 129; 665 static final int SELECTION_STRING_CHANGED = 130; 666 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 667 static final int SAVE_WEBARCHIVE_FINISHED = 132; 668 669 static final int SET_AUTOFILLABLE = 133; 670 static final int AUTOFILL_COMPLETE = 134; 671 672 static final int SELECT_AT = 135; 673 static final int SCREEN_ON = 136; 674 static final int ENTER_FULLSCREEN_VIDEO = 137; 675 676 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 677 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 678 679 static final String[] HandlerPrivateDebugString = { 680 "REMEMBER_PASSWORD", // = 1; 681 "NEVER_REMEMBER_PASSWORD", // = 2; 682 "SWITCH_TO_SHORTPRESS", // = 3; 683 "SWITCH_TO_LONGPRESS", // = 4; 684 "RELEASE_SINGLE_TAP", // = 5; 685 "REQUEST_FORM_DATA", // = 6; 686 "RESUME_WEBCORE_PRIORITY", // = 7; 687 "DRAG_HELD_MOTIONLESS", // = 8; 688 "AWAKEN_SCROLL_BARS", // = 9; 689 "PREVENT_DEFAULT_TIMEOUT", // = 10; 690 "SCROLL_SELECT_TEXT" // = 11; 691 }; 692 693 static final String[] HandlerPackageDebugString = { 694 "SCROLL_TO_MSG_ID", // = 101; 695 "102", // = 102; 696 "103", // = 103; 697 "104", // = 104; 698 "NEW_PICTURE_MSG_ID", // = 105; 699 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 700 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 701 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 702 "UPDATE_ZOOM_RANGE", // = 109; 703 "UNHANDLED_NAV_KEY", // = 110; 704 "CLEAR_TEXT_ENTRY", // = 111; 705 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 706 "SHOW_RECT_MSG_ID", // = 113; 707 "LONG_PRESS_CENTER", // = 114; 708 "PREVENT_TOUCH_ID", // = 115; 709 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 710 "INVAL_RECT_MSG_ID", // = 117; 711 "REQUEST_KEYBOARD", // = 118; 712 "DO_MOTION_UP", // = 119; 713 "SHOW_FULLSCREEN", // = 120; 714 "HIDE_FULLSCREEN", // = 121; 715 "DOM_FOCUS_CHANGED", // = 122; 716 "REPLACE_BASE_CONTENT", // = 123; 717 "FORM_DID_BLUR", // = 124; 718 "RETURN_LABEL", // = 125; 719 "FIND_AGAIN", // = 126; 720 "CENTER_FIT_RECT", // = 127; 721 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 722 "SET_SCROLLBAR_MODES", // = 129; 723 "SELECTION_STRING_CHANGED", // = 130; 724 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 725 "SAVE_WEBARCHIVE_FINISHED", // = 132; 726 "SET_AUTOFILLABLE", // = 133; 727 "AUTOFILL_COMPLETE", // = 134; 728 "SELECT_AT", // = 135; 729 "SCREEN_ON", // = 136; 730 "ENTER_FULLSCREEN_VIDEO" // = 137; 731 }; 732 733 // If the site doesn't use the viewport meta tag to specify the viewport, 734 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 735 static final int DEFAULT_VIEWPORT_WIDTH = 980; 736 737 // normally we try to fit the content to the minimum preferred width 738 // calculated by the Webkit. To avoid the bad behavior when some site's 739 // minimum preferred width keeps growing when changing the viewport width or 740 // the minimum preferred width is huge, an upper limit is needed. 741 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 742 743 // initial scale in percent. 0 means using default. 744 private int mInitialScaleInPercent = 0; 745 746 // Whether or not a scroll event should be sent to webkit. This is only set 747 // to false when restoring the scroll position. 748 private boolean mSendScrollEvent = true; 749 750 private int mSnapScrollMode = SNAP_NONE; 751 private static final int SNAP_NONE = 0; 752 private static final int SNAP_LOCK = 1; // not a separate state 753 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 754 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 755 private boolean mSnapPositive; 756 757 // keep these in sync with their counterparts in WebView.cpp 758 private static final int DRAW_EXTRAS_NONE = 0; 759 private static final int DRAW_EXTRAS_FIND = 1; 760 private static final int DRAW_EXTRAS_SELECTION = 2; 761 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 762 763 // keep this in sync with WebCore:ScrollbarMode in WebKit 764 private static final int SCROLLBAR_AUTO = 0; 765 private static final int SCROLLBAR_ALWAYSOFF = 1; 766 // as we auto fade scrollbar, this is ignored. 767 private static final int SCROLLBAR_ALWAYSON = 2; 768 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 769 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 770 771 // constants for determining script injection strategy 772 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 773 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 774 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 775 776 // the alias via which accessibility JavaScript interface is exposed 777 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 778 779 // JavaScript to inject the script chooser which will 780 // pick the right script for the current URL 781 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 782 "javascript:(function() {" + 783 " var chooser = document.createElement('script');" + 784 " chooser.type = 'text/javascript';" + 785 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 786 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 787 " })();"; 788 789 // Regular expression that matches the "axs" URL parameter. 790 // The value of 0 means the accessibility script is opted out 791 // The value of 1 means the accessibility script is already injected 792 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 793 794 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 795 private TextToSpeech mTextToSpeech; 796 797 // variable to cache the above pattern in case accessibility is enabled. 798 private Pattern mMatchAxsUrlParameterPattern; 799 800 /** 801 * Max distance to overscroll by in pixels. 802 * This how far content can be pulled beyond its normal bounds by the user. 803 */ 804 private int mOverscrollDistance; 805 806 /** 807 * Max distance to overfling by in pixels. 808 * This is how far flinged content can move beyond the end of its normal bounds. 809 */ 810 private int mOverflingDistance; 811 812 private OverScrollGlow mOverScrollGlow; 813 814 // Used to match key downs and key ups 815 private Vector<Integer> mKeysPressed; 816 817 /* package */ static boolean mLogEvent = true; 818 819 // for event log 820 private long mLastTouchUpTime = 0; 821 822 private WebViewCore.AutoFillData mAutoFillData; 823 824 /** 825 * URI scheme for telephone number 826 */ 827 public static final String SCHEME_TEL = "tel:"; 828 /** 829 * URI scheme for email address 830 */ 831 public static final String SCHEME_MAILTO = "mailto:"; 832 /** 833 * URI scheme for map address 834 */ 835 public static final String SCHEME_GEO = "geo:0,0?q="; 836 837 private int mBackgroundColor = Color.WHITE; 838 839 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 840 private int mAutoScrollX = 0; 841 private int mAutoScrollY = 0; 842 private int mMinAutoScrollX = 0; 843 private int mMaxAutoScrollX = 0; 844 private int mMinAutoScrollY = 0; 845 private int mMaxAutoScrollY = 0; 846 private Rect mScrollingLayerBounds = new Rect(); 847 private boolean mSentAutoScrollMessage = false; 848 849 // used for serializing asynchronously handled touch events. 850 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 851 852 // Used to notify listeners of a new picture. 853 private PictureListener mPictureListener; 854 /** 855 * Interface to listen for new pictures as they change. 856 * @deprecated This interface is now obsolete. 857 */ 858 @Deprecated 859 public interface PictureListener { 860 /** 861 * Notify the listener that the picture has changed. 862 * @param view The WebView that owns the picture. 863 * @param picture The new picture. 864 * @deprecated This method is now obsolete. 865 */ 866 @Deprecated 867 public void onNewPicture(WebView view, Picture picture); 868 } 869 870 // FIXME: Want to make this public, but need to change the API file. 871 public /*static*/ class HitTestResult { 872 /** 873 * Default HitTestResult, where the target is unknown 874 */ 875 public static final int UNKNOWN_TYPE = 0; 876 /** 877 * HitTestResult for hitting a HTML::a tag 878 */ 879 public static final int ANCHOR_TYPE = 1; 880 /** 881 * HitTestResult for hitting a phone number 882 */ 883 public static final int PHONE_TYPE = 2; 884 /** 885 * HitTestResult for hitting a map address 886 */ 887 public static final int GEO_TYPE = 3; 888 /** 889 * HitTestResult for hitting an email address 890 */ 891 public static final int EMAIL_TYPE = 4; 892 /** 893 * HitTestResult for hitting an HTML::img tag 894 */ 895 public static final int IMAGE_TYPE = 5; 896 /** 897 * HitTestResult for hitting a HTML::a tag which contains HTML::img 898 */ 899 public static final int IMAGE_ANCHOR_TYPE = 6; 900 /** 901 * HitTestResult for hitting a HTML::a tag with src=http 902 */ 903 public static final int SRC_ANCHOR_TYPE = 7; 904 /** 905 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 906 */ 907 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 908 /** 909 * HitTestResult for hitting an edit text area 910 */ 911 public static final int EDIT_TEXT_TYPE = 9; 912 913 private int mType; 914 private String mExtra; 915 916 HitTestResult() { 917 mType = UNKNOWN_TYPE; 918 } 919 920 private void setType(int type) { 921 mType = type; 922 } 923 924 private void setExtra(String extra) { 925 mExtra = extra; 926 } 927 928 public int getType() { 929 return mType; 930 } 931 932 public String getExtra() { 933 return mExtra; 934 } 935 } 936 937 /** 938 * Construct a new WebView with a Context object. 939 * @param context A Context object used to access application assets. 940 */ 941 public WebView(Context context) { 942 this(context, null); 943 } 944 945 /** 946 * Construct a new WebView with layout parameters. 947 * @param context A Context object used to access application assets. 948 * @param attrs An AttributeSet passed to our parent. 949 */ 950 public WebView(Context context, AttributeSet attrs) { 951 this(context, attrs, com.android.internal.R.attr.webViewStyle); 952 } 953 954 /** 955 * Construct a new WebView with layout parameters and a default style. 956 * @param context A Context object used to access application assets. 957 * @param attrs An AttributeSet passed to our parent. 958 * @param defStyle The default style resource ID. 959 */ 960 public WebView(Context context, AttributeSet attrs, int defStyle) { 961 this(context, attrs, defStyle, false); 962 } 963 964 /** 965 * Construct a new WebView with layout parameters and a default style. 966 * @param context A Context object used to access application assets. 967 * @param attrs An AttributeSet passed to our parent. 968 * @param defStyle The default style resource ID. 969 */ 970 public WebView(Context context, AttributeSet attrs, int defStyle, 971 boolean privateBrowsing) { 972 this(context, attrs, defStyle, null, privateBrowsing); 973 } 974 975 /** 976 * Construct a new WebView with layout parameters, a default style and a set 977 * of custom Javscript interfaces to be added to the WebView at initialization 978 * time. This guarantees that these interfaces will be available when the JS 979 * context is initialized. 980 * @param context A Context object used to access application assets. 981 * @param attrs An AttributeSet passed to our parent. 982 * @param defStyle The default style resource ID. 983 * @param javaScriptInterfaces is a Map of interface names, as keys, and 984 * object implementing those interfaces, as values. 985 * @hide pending API council approval. 986 */ 987 protected WebView(Context context, AttributeSet attrs, int defStyle, 988 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 989 super(context, attrs, defStyle); 990 991 // Used by the chrome stack to find application paths 992 JniUtil.setContext(context); 993 994 mCallbackProxy = new CallbackProxy(context, this); 995 mViewManager = new ViewManager(this); 996 L10nUtils.setApplicationContext(context.getApplicationContext()); 997 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 998 mDatabase = WebViewDatabase.getInstance(context); 999 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 1000 mZoomManager = new ZoomManager(this, mCallbackProxy); 1001 1002 /* The init method must follow the creation of certain member variables, 1003 * such as the mZoomManager. 1004 */ 1005 init(); 1006 setupPackageListener(context); 1007 setupProxyListener(context); 1008 updateMultiTouchSupport(context); 1009 1010 if (privateBrowsing) { 1011 startPrivateBrowsing(); 1012 } 1013 1014 mAutoFillData = new WebViewCore.AutoFillData(); 1015 } 1016 1017 private static class ProxyReceiver extends BroadcastReceiver { 1018 @Override 1019 public void onReceive(Context context, Intent intent) { 1020 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1021 handleProxyBroadcast(intent); 1022 } 1023 } 1024 } 1025 1026 /* 1027 * A variable to track if there is a receiver added for PROXY_CHANGE_ACTION 1028 */ 1029 private static boolean sProxyReceiverAdded; 1030 1031 private static synchronized void setupProxyListener(Context context) { 1032 if (sProxyReceiverAdded) { 1033 return; 1034 } 1035 IntentFilter filter = new IntentFilter(); 1036 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1037 Intent currentProxy = context.getApplicationContext().registerReceiver( 1038 new ProxyReceiver(), filter); 1039 sProxyReceiverAdded = true; 1040 if (currentProxy != null) { 1041 handleProxyBroadcast(currentProxy); 1042 } 1043 } 1044 1045 private static void handleProxyBroadcast(Intent intent) { 1046 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1047 if (proxyProperties == null || proxyProperties.getHost() == null) { 1048 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, ""); 1049 return; 1050 } 1051 1052 String host = proxyProperties.getHost(); 1053 int port = proxyProperties.getPort(); 1054 if (port != 0) 1055 host += ":" + port; 1056 1057 // TODO: Handle exclusion list 1058 // The plan is to make an AndroidProxyResolver, and handle the blacklist 1059 // there 1060 String exclusionList = proxyProperties.getExclusionList(); 1061 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, host); 1062 } 1063 1064 /* 1065 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1066 * or ACTION_PACKAGE_REMOVED. 1067 */ 1068 private static boolean sPackageInstallationReceiverAdded = false; 1069 1070 /* 1071 * A set of Google packages we monitor for the 1072 * navigator.isApplicationInstalled() API. Add additional packages as 1073 * needed. 1074 */ 1075 private static Set<String> sGoogleApps; 1076 static { 1077 sGoogleApps = new HashSet<String>(); 1078 sGoogleApps.add("com.google.android.youtube"); 1079 } 1080 1081 private static class PackageListener extends BroadcastReceiver { 1082 @Override 1083 public void onReceive(Context context, Intent intent) { 1084 final String action = intent.getAction(); 1085 final String packageName = intent.getData().getSchemeSpecificPart(); 1086 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1087 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1088 // if it is replacing, refreshPlugins() when adding 1089 return; 1090 } 1091 1092 if (sGoogleApps.contains(packageName)) { 1093 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1094 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1095 } else { 1096 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1097 } 1098 } 1099 1100 PluginManager pm = PluginManager.getInstance(context); 1101 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1102 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1103 } 1104 } 1105 } 1106 1107 private void setupPackageListener(Context context) { 1108 1109 /* 1110 * we must synchronize the instance check and the creation of the 1111 * receiver to ensure that only ONE receiver exists for all WebView 1112 * instances. 1113 */ 1114 synchronized (WebView.class) { 1115 1116 // if the receiver already exists then we do not need to register it 1117 // again 1118 if (sPackageInstallationReceiverAdded) { 1119 return; 1120 } 1121 1122 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1123 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1124 filter.addDataScheme("package"); 1125 BroadcastReceiver packageListener = new PackageListener(); 1126 context.getApplicationContext().registerReceiver(packageListener, filter); 1127 sPackageInstallationReceiverAdded = true; 1128 } 1129 1130 // check if any of the monitored apps are already installed 1131 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1132 1133 @Override 1134 protected Set<String> doInBackground(Void... unused) { 1135 Set<String> installedPackages = new HashSet<String>(); 1136 PackageManager pm = mContext.getPackageManager(); 1137 for (String name : sGoogleApps) { 1138 try { 1139 PackageInfo pInfo = pm.getPackageInfo(name, 1140 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1141 installedPackages.add(name); 1142 } catch(PackageManager.NameNotFoundException e) { 1143 // package not found 1144 } 1145 } 1146 return installedPackages; 1147 } 1148 1149 // Executes on the UI thread 1150 @Override 1151 protected void onPostExecute(Set<String> installedPackages) { 1152 if (mWebViewCore != null) { 1153 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1154 } 1155 } 1156 }; 1157 task.execute(); 1158 } 1159 1160 void updateMultiTouchSupport(Context context) { 1161 mZoomManager.updateMultiTouchSupport(context); 1162 } 1163 1164 private void init() { 1165 setWillNotDraw(false); 1166 setFocusable(true); 1167 setFocusableInTouchMode(true); 1168 setClickable(true); 1169 setLongClickable(true); 1170 1171 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1172 int slop = configuration.getScaledTouchSlop(); 1173 mTouchSlopSquare = slop * slop; 1174 mMinLockSnapReverseDistance = slop; 1175 slop = configuration.getScaledDoubleTapSlop(); 1176 mDoubleTapSlopSquare = slop * slop; 1177 final float density = getContext().getResources().getDisplayMetrics().density; 1178 // use one line height, 16 based on our current default font, for how 1179 // far we allow a touch be away from the edge of a link 1180 mNavSlop = (int) (16 * density); 1181 mZoomManager.init(density); 1182 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1183 1184 // Compute the inverse of the density squared. 1185 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1186 1187 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1188 mOverflingDistance = configuration.getScaledOverflingDistance(); 1189 1190 setScrollBarStyle(super.getScrollBarStyle()); 1191 // Initially use a size of two, since the user is likely to only hold 1192 // down two keys at a time (shift + another key) 1193 mKeysPressed = new Vector<Integer>(2); 1194 mHTML5VideoViewProxy = null ; 1195 } 1196 1197 /** 1198 * Adds accessibility APIs to JavaScript. 1199 * 1200 * Note: This method is responsible to performing the necessary 1201 * check if the accessibility APIs should be exposed. 1202 */ 1203 private void addAccessibilityApisToJavaScript() { 1204 if (AccessibilityManager.getInstance(mContext).isEnabled() 1205 && getSettings().getJavaScriptEnabled()) { 1206 // exposing the TTS for now ... 1207 mTextToSpeech = new TextToSpeech(getContext(), null); 1208 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1209 } 1210 } 1211 1212 /** 1213 * Removes accessibility APIs from JavaScript. 1214 */ 1215 private void removeAccessibilityApisFromJavaScript() { 1216 // exposing the TTS for now ... 1217 if (mTextToSpeech != null) { 1218 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1219 mTextToSpeech.shutdown(); 1220 mTextToSpeech = null; 1221 } 1222 } 1223 1224 @Override 1225 public void setOverScrollMode(int mode) { 1226 super.setOverScrollMode(mode); 1227 if (mode != OVER_SCROLL_NEVER) { 1228 if (mOverScrollGlow == null) { 1229 mOverScrollGlow = new OverScrollGlow(this); 1230 } 1231 } else { 1232 mOverScrollGlow = null; 1233 } 1234 } 1235 1236 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1237 final float density = mContext.getResources().getDisplayMetrics().density 1238 * 100 / zoomDensity; 1239 mNavSlop = (int) (16 * density); 1240 mZoomManager.updateDefaultZoomDensity(density); 1241 } 1242 1243 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1244 String password, final Message resumeMsg) { 1245 boolean rVal = false; 1246 if (resumeMsg == null) { 1247 // null resumeMsg implies saving password silently 1248 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1249 } else { 1250 final Message remember = mPrivateHandler.obtainMessage( 1251 REMEMBER_PASSWORD); 1252 remember.getData().putString("host", schemePlusHost); 1253 remember.getData().putString("username", username); 1254 remember.getData().putString("password", password); 1255 remember.obj = resumeMsg; 1256 1257 final Message neverRemember = mPrivateHandler.obtainMessage( 1258 NEVER_REMEMBER_PASSWORD); 1259 neverRemember.getData().putString("host", schemePlusHost); 1260 neverRemember.getData().putString("username", username); 1261 neverRemember.getData().putString("password", password); 1262 neverRemember.obj = resumeMsg; 1263 1264 new AlertDialog.Builder(getContext()) 1265 .setTitle(com.android.internal.R.string.save_password_label) 1266 .setMessage(com.android.internal.R.string.save_password_message) 1267 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1268 new DialogInterface.OnClickListener() { 1269 public void onClick(DialogInterface dialog, int which) { 1270 resumeMsg.sendToTarget(); 1271 } 1272 }) 1273 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1274 new DialogInterface.OnClickListener() { 1275 public void onClick(DialogInterface dialog, int which) { 1276 remember.sendToTarget(); 1277 } 1278 }) 1279 .setNegativeButton(com.android.internal.R.string.save_password_never, 1280 new DialogInterface.OnClickListener() { 1281 public void onClick(DialogInterface dialog, int which) { 1282 neverRemember.sendToTarget(); 1283 } 1284 }) 1285 .setOnCancelListener(new OnCancelListener() { 1286 public void onCancel(DialogInterface dialog) { 1287 resumeMsg.sendToTarget(); 1288 } 1289 }).show(); 1290 // Return true so that WebViewCore will pause while the dialog is 1291 // up. 1292 rVal = true; 1293 } 1294 return rVal; 1295 } 1296 1297 @Override 1298 public void setScrollBarStyle(int style) { 1299 if (style == View.SCROLLBARS_INSIDE_INSET 1300 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1301 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1302 } else { 1303 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1304 } 1305 super.setScrollBarStyle(style); 1306 } 1307 1308 /** 1309 * Specify whether the horizontal scrollbar has overlay style. 1310 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1311 */ 1312 public void setHorizontalScrollbarOverlay(boolean overlay) { 1313 mOverlayHorizontalScrollbar = overlay; 1314 } 1315 1316 /** 1317 * Specify whether the vertical scrollbar has overlay style. 1318 * @param overlay TRUE if vertical scrollbar should have overlay style. 1319 */ 1320 public void setVerticalScrollbarOverlay(boolean overlay) { 1321 mOverlayVerticalScrollbar = overlay; 1322 } 1323 1324 /** 1325 * Return whether horizontal scrollbar has overlay style 1326 * @return TRUE if horizontal scrollbar has overlay style. 1327 */ 1328 public boolean overlayHorizontalScrollbar() { 1329 return mOverlayHorizontalScrollbar; 1330 } 1331 1332 /** 1333 * Return whether vertical scrollbar has overlay style 1334 * @return TRUE if vertical scrollbar has overlay style. 1335 */ 1336 public boolean overlayVerticalScrollbar() { 1337 return mOverlayVerticalScrollbar; 1338 } 1339 1340 /* 1341 * Return the width of the view where the content of WebView should render 1342 * to. 1343 * Note: this can be called from WebCoreThread. 1344 */ 1345 /* package */ int getViewWidth() { 1346 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1347 return getWidth(); 1348 } else { 1349 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1350 } 1351 } 1352 1353 /** 1354 * returns the height of the titlebarview (if any). Does not care about 1355 * scrolling 1356 * @hide 1357 */ 1358 protected int getTitleHeight() { 1359 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1360 } 1361 1362 /** 1363 * Return the amount of the titlebarview (if any) that is visible 1364 * 1365 * @deprecated This method is now obsolete. 1366 */ 1367 public int getVisibleTitleHeight() { 1368 // need to restrict mScrollY due to over scroll 1369 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1370 } 1371 1372 /* 1373 * Return the height of the view where the content of WebView should render 1374 * to. Note that this excludes mTitleBar, if there is one. 1375 * Note: this can be called from WebCoreThread. 1376 */ 1377 /* package */ int getViewHeight() { 1378 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1379 } 1380 1381 private int getViewHeightWithTitle() { 1382 int height = getHeight(); 1383 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1384 height -= getHorizontalScrollbarHeight(); 1385 } 1386 return height; 1387 } 1388 1389 /** 1390 * @return The SSL certificate for the main top-level page or null if 1391 * there is no certificate (the site is not secure). 1392 */ 1393 public SslCertificate getCertificate() { 1394 return mCertificate; 1395 } 1396 1397 /** 1398 * Sets the SSL certificate for the main top-level page. 1399 */ 1400 public void setCertificate(SslCertificate certificate) { 1401 if (DebugFlags.WEB_VIEW) { 1402 Log.v(LOGTAG, "setCertificate=" + certificate); 1403 } 1404 // here, the certificate can be null (if the site is not secure) 1405 mCertificate = certificate; 1406 } 1407 1408 //------------------------------------------------------------------------- 1409 // Methods called by activity 1410 //------------------------------------------------------------------------- 1411 1412 /** 1413 * Save the username and password for a particular host in the WebView's 1414 * internal database. 1415 * @param host The host that required the credentials. 1416 * @param username The username for the given host. 1417 * @param password The password for the given host. 1418 */ 1419 public void savePassword(String host, String username, String password) { 1420 mDatabase.setUsernamePassword(host, username, password); 1421 } 1422 1423 /** 1424 * Set the HTTP authentication credentials for a given host and realm. 1425 * 1426 * @param host The host for the credentials. 1427 * @param realm The realm for the credentials. 1428 * @param username The username for the password. If it is null, it means 1429 * password can't be saved. 1430 * @param password The password 1431 */ 1432 public void setHttpAuthUsernamePassword(String host, String realm, 1433 String username, String password) { 1434 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1435 } 1436 1437 /** 1438 * Retrieve the HTTP authentication username and password for a given 1439 * host & realm pair 1440 * 1441 * @param host The host for which the credentials apply. 1442 * @param realm The realm for which the credentials apply. 1443 * @return String[] if found, String[0] is username, which can be null and 1444 * String[1] is password. Return null if it can't find anything. 1445 */ 1446 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1447 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1448 } 1449 1450 /** 1451 * Remove Find or Select ActionModes, if active. 1452 */ 1453 private void clearActionModes() { 1454 if (mSelectCallback != null) { 1455 mSelectCallback.finish(); 1456 } 1457 if (mFindCallback != null) { 1458 mFindCallback.finish(); 1459 } 1460 } 1461 1462 /** 1463 * Called to clear state when moving from one page to another, or changing 1464 * in some other way that makes elements associated with the current page 1465 * (such as WebTextView or ActionModes) no longer relevant. 1466 */ 1467 private void clearHelpers() { 1468 clearTextEntry(); 1469 clearActionModes(); 1470 dismissFullScreenMode(); 1471 } 1472 1473 /** 1474 * Destroy the internal state of the WebView. This method should be called 1475 * after the WebView has been removed from the view system. No other 1476 * methods may be called on a WebView after destroy. 1477 */ 1478 public void destroy() { 1479 clearHelpers(); 1480 if (mListBoxDialog != null) { 1481 mListBoxDialog.dismiss(); 1482 mListBoxDialog = null; 1483 } 1484 if (mNativeClass != 0) nativeStopGL(); 1485 if (mWebViewCore != null) { 1486 // Set the handlers to null before destroying WebViewCore so no 1487 // more messages will be posted. 1488 mCallbackProxy.setWebViewClient(null); 1489 mCallbackProxy.setWebChromeClient(null); 1490 // Tell WebViewCore to destroy itself 1491 synchronized (this) { 1492 WebViewCore webViewCore = mWebViewCore; 1493 mWebViewCore = null; // prevent using partial webViewCore 1494 webViewCore.destroy(); 1495 } 1496 // Remove any pending messages that might not be serviced yet. 1497 mPrivateHandler.removeCallbacksAndMessages(null); 1498 mCallbackProxy.removeCallbacksAndMessages(null); 1499 // Wake up the WebCore thread just in case it is waiting for a 1500 // JavaScript dialog. 1501 synchronized (mCallbackProxy) { 1502 mCallbackProxy.notify(); 1503 } 1504 } 1505 if (mNativeClass != 0) { 1506 nativeDestroy(); 1507 mNativeClass = 0; 1508 } 1509 } 1510 1511 /** 1512 * Enables platform notifications of data state and proxy changes. 1513 * @deprecated Obsolete - platform notifications are always enabled. 1514 */ 1515 @Deprecated 1516 public static void enablePlatformNotifications() { 1517 Network.enablePlatformNotifications(); 1518 } 1519 1520 /** 1521 * If platform notifications are enabled, this should be called 1522 * from the Activity's onPause() or onStop(). 1523 * @deprecated Obsolete - platform notifications are always enabled. 1524 */ 1525 @Deprecated 1526 public static void disablePlatformNotifications() { 1527 Network.disablePlatformNotifications(); 1528 } 1529 1530 /** 1531 * Sets JavaScript engine flags. 1532 * 1533 * @param flags JS engine flags in a String 1534 * 1535 * @hide pending API solidification 1536 */ 1537 public void setJsFlags(String flags) { 1538 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1539 } 1540 1541 /** 1542 * Inform WebView of the network state. This is used to set 1543 * the JavaScript property window.navigator.isOnline and 1544 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1545 * @param networkUp boolean indicating if network is available 1546 */ 1547 public void setNetworkAvailable(boolean networkUp) { 1548 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1549 networkUp ? 1 : 0, 0); 1550 } 1551 1552 /** 1553 * Inform WebView about the current network type. 1554 * {@hide} 1555 */ 1556 public void setNetworkType(String type, String subtype) { 1557 Map<String, String> map = new HashMap<String, String>(); 1558 map.put("type", type); 1559 map.put("subtype", subtype); 1560 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1561 } 1562 /** 1563 * Save the state of this WebView used in 1564 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1565 * method no longer stores the display data for this WebView. The previous 1566 * behavior could potentially leak files if {@link #restoreState} was never 1567 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1568 * and restoring the display data. 1569 * @param outState The Bundle to store the WebView state. 1570 * @return The same copy of the back/forward list used to save the state. If 1571 * saveState fails, the returned list will be null. 1572 * @see #savePicture 1573 * @see #restorePicture 1574 */ 1575 public WebBackForwardList saveState(Bundle outState) { 1576 if (outState == null) { 1577 return null; 1578 } 1579 // We grab a copy of the back/forward list because a client of WebView 1580 // may have invalidated the history list by calling clearHistory. 1581 WebBackForwardList list = copyBackForwardList(); 1582 final int currentIndex = list.getCurrentIndex(); 1583 final int size = list.getSize(); 1584 // We should fail saving the state if the list is empty or the index is 1585 // not in a valid range. 1586 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1587 return null; 1588 } 1589 outState.putInt("index", currentIndex); 1590 // FIXME: This should just be a byte[][] instead of ArrayList but 1591 // Parcel.java does not have the code to handle multi-dimensional 1592 // arrays. 1593 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1594 for (int i = 0; i < size; i++) { 1595 WebHistoryItem item = list.getItemAtIndex(i); 1596 if (null == item) { 1597 // FIXME: this shouldn't happen 1598 // need to determine how item got set to null 1599 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1600 return null; 1601 } 1602 byte[] data = item.getFlattenedData(); 1603 if (data == null) { 1604 // It would be very odd to not have any data for a given history 1605 // item. And we will fail to rebuild the history list without 1606 // flattened data. 1607 return null; 1608 } 1609 history.add(data); 1610 } 1611 outState.putSerializable("history", history); 1612 if (mCertificate != null) { 1613 outState.putBundle("certificate", 1614 SslCertificate.saveState(mCertificate)); 1615 } 1616 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1617 mZoomManager.saveZoomState(outState); 1618 return list; 1619 } 1620 1621 /** 1622 * Save the current display data to the Bundle given. Used in conjunction 1623 * with {@link #saveState}. 1624 * @param b A Bundle to store the display data. 1625 * @param dest The file to store the serialized picture data. Will be 1626 * overwritten with this WebView's picture data. 1627 * @return True if the picture was successfully saved. 1628 * @deprecated This method is now obsolete. 1629 */ 1630 @Deprecated 1631 public boolean savePicture(Bundle b, final File dest) { 1632 if (dest == null || b == null) { 1633 return false; 1634 } 1635 final Picture p = capturePicture(); 1636 // Use a temporary file while writing to ensure the destination file 1637 // contains valid data. 1638 final File temp = new File(dest.getPath() + ".writing"); 1639 new Thread(new Runnable() { 1640 public void run() { 1641 FileOutputStream out = null; 1642 try { 1643 out = new FileOutputStream(temp); 1644 p.writeToStream(out); 1645 // Writing the picture succeeded, rename the temporary file 1646 // to the destination. 1647 temp.renameTo(dest); 1648 } catch (Exception e) { 1649 // too late to do anything about it. 1650 } finally { 1651 if (out != null) { 1652 try { 1653 out.close(); 1654 } catch (Exception e) { 1655 // Can't do anything about that 1656 } 1657 } 1658 temp.delete(); 1659 } 1660 } 1661 }).start(); 1662 // now update the bundle 1663 b.putInt("scrollX", mScrollX); 1664 b.putInt("scrollY", mScrollY); 1665 mZoomManager.saveZoomState(b); 1666 return true; 1667 } 1668 1669 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1670 int sx = b.getInt("scrollX", 0); 1671 int sy = b.getInt("scrollY", 0); 1672 1673 mDrawHistory = true; 1674 mHistoryPicture = p; 1675 1676 mScrollX = sx; 1677 mScrollY = sy; 1678 mZoomManager.restoreZoomState(b); 1679 final float scale = mZoomManager.getScale(); 1680 mHistoryWidth = Math.round(p.getWidth() * scale); 1681 mHistoryHeight = Math.round(p.getHeight() * scale); 1682 1683 invalidate(); 1684 } 1685 1686 /** 1687 * Restore the display data that was save in {@link #savePicture}. Used in 1688 * conjunction with {@link #restoreState}. 1689 * @param b A Bundle containing the saved display data. 1690 * @param src The file where the picture data was stored. 1691 * @return True if the picture was successfully restored. 1692 * @deprecated This method is now obsolete. 1693 */ 1694 @Deprecated 1695 public boolean restorePicture(Bundle b, File src) { 1696 if (src == null || b == null) { 1697 return false; 1698 } 1699 if (!src.exists()) { 1700 return false; 1701 } 1702 try { 1703 final FileInputStream in = new FileInputStream(src); 1704 final Bundle copy = new Bundle(b); 1705 new Thread(new Runnable() { 1706 public void run() { 1707 try { 1708 final Picture p = Picture.createFromStream(in); 1709 if (p != null) { 1710 // Post a runnable on the main thread to update the 1711 // history picture fields. 1712 mPrivateHandler.post(new Runnable() { 1713 public void run() { 1714 restoreHistoryPictureFields(p, copy); 1715 } 1716 }); 1717 } 1718 } finally { 1719 try { 1720 in.close(); 1721 } catch (Exception e) { 1722 // Nothing we can do now. 1723 } 1724 } 1725 } 1726 }).start(); 1727 } catch (FileNotFoundException e){ 1728 e.printStackTrace(); 1729 } 1730 return true; 1731 } 1732 1733 /** 1734 * Restore the state of this WebView from the given map used in 1735 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1736 * be called to restore the state of the WebView before using the object. If 1737 * it is called after the WebView has had a chance to build state (load 1738 * pages, create a back/forward list, etc.) there may be undesirable 1739 * side-effects. Please note that this method no longer restores the 1740 * display data for this WebView. See {@link #savePicture} and {@link 1741 * #restorePicture} for saving and restoring the display data. 1742 * @param inState The incoming Bundle of state. 1743 * @return The restored back/forward list or null if restoreState failed. 1744 * @see #savePicture 1745 * @see #restorePicture 1746 */ 1747 public WebBackForwardList restoreState(Bundle inState) { 1748 WebBackForwardList returnList = null; 1749 if (inState == null) { 1750 return returnList; 1751 } 1752 if (inState.containsKey("index") && inState.containsKey("history")) { 1753 mCertificate = SslCertificate.restoreState( 1754 inState.getBundle("certificate")); 1755 1756 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1757 final int index = inState.getInt("index"); 1758 // We can't use a clone of the list because we need to modify the 1759 // shared copy, so synchronize instead to prevent concurrent 1760 // modifications. 1761 synchronized (list) { 1762 final List<byte[]> history = 1763 (List<byte[]>) inState.getSerializable("history"); 1764 final int size = history.size(); 1765 // Check the index bounds so we don't crash in native code while 1766 // restoring the history index. 1767 if (index < 0 || index >= size) { 1768 return null; 1769 } 1770 for (int i = 0; i < size; i++) { 1771 byte[] data = history.remove(0); 1772 if (data == null) { 1773 // If we somehow have null data, we cannot reconstruct 1774 // the item and thus our history list cannot be rebuilt. 1775 return null; 1776 } 1777 WebHistoryItem item = new WebHistoryItem(data); 1778 list.addHistoryItem(item); 1779 } 1780 // Grab the most recent copy to return to the caller. 1781 returnList = copyBackForwardList(); 1782 // Update the copy to have the correct index. 1783 returnList.setCurrentIndex(index); 1784 } 1785 // Restore private browsing setting. 1786 if (inState.getBoolean("privateBrowsingEnabled")) { 1787 getSettings().setPrivateBrowsingEnabled(true); 1788 } 1789 mZoomManager.restoreZoomState(inState); 1790 // Remove all pending messages because we are restoring previous 1791 // state. 1792 mWebViewCore.removeMessages(); 1793 // Send a restore state message. 1794 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1795 } 1796 return returnList; 1797 } 1798 1799 /** 1800 * Load the given url with the extra headers. 1801 * @param url The url of the resource to load. 1802 * @param extraHeaders The extra headers sent with this url. This should not 1803 * include the common headers like "user-agent". If it does, it 1804 * will be replaced by the intrinsic value of the WebView. 1805 */ 1806 public void loadUrl(String url, Map<String, String> extraHeaders) { 1807 switchOutDrawHistory(); 1808 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1809 arg.mUrl = url; 1810 arg.mExtraHeaders = extraHeaders; 1811 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1812 clearHelpers(); 1813 } 1814 1815 /** 1816 * Load the given url. 1817 * @param url The url of the resource to load. 1818 */ 1819 public void loadUrl(String url) { 1820 if (url == null) { 1821 return; 1822 } 1823 loadUrl(url, null); 1824 } 1825 1826 /** 1827 * Load the url with postData using "POST" method into the WebView. If url 1828 * is not a network url, it will be loaded with {link 1829 * {@link #loadUrl(String)} instead. 1830 * 1831 * @param url The url of the resource to load. 1832 * @param postData The data will be passed to "POST" request. 1833 */ 1834 public void postUrl(String url, byte[] postData) { 1835 if (URLUtil.isNetworkUrl(url)) { 1836 switchOutDrawHistory(); 1837 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1838 arg.mUrl = url; 1839 arg.mPostData = postData; 1840 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1841 clearHelpers(); 1842 } else { 1843 loadUrl(url); 1844 } 1845 } 1846 1847 /** 1848 * Load the given data into the WebView. This will load the data into 1849 * WebView using the data: scheme. Content loaded through this mechanism 1850 * does not have the ability to load content from the network. 1851 * @param data A String of data in the given encoding. The date must 1852 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1853 * %27, %3f respectively. 1854 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1855 * @param encoding The encoding of the data. i.e. utf-8, base64 1856 */ 1857 public void loadData(String data, String mimeType, String encoding) { 1858 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1859 } 1860 1861 /** 1862 * Load the given data into the WebView, use the provided URL as the base 1863 * URL for the content. The base URL is the URL that represents the page 1864 * that is loaded through this interface. As such, it is used to resolve any 1865 * relative URLs. The historyUrl is used for the history entry. 1866 * <p> 1867 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1868 * files through "file:///android_asset/" for the sub resources is more 1869 * restricted. If you provide null or empty string as baseUrl, you won't be 1870 * able to access asset files. If the baseUrl is anything other than 1871 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1872 * sub resources. 1873 * 1874 * @param baseUrl Url to resolve relative paths with, if null defaults to 1875 * "about:blank" 1876 * @param data A String of data in the given encoding. 1877 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1878 * defaults to "text/html" 1879 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1880 * @param historyUrl URL to use as the history entry. Can be null. 1881 */ 1882 public void loadDataWithBaseURL(String baseUrl, String data, 1883 String mimeType, String encoding, String historyUrl) { 1884 1885 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1886 loadData(data, mimeType, encoding); 1887 return; 1888 } 1889 switchOutDrawHistory(); 1890 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1891 arg.mBaseUrl = baseUrl; 1892 arg.mData = data; 1893 arg.mMimeType = mimeType; 1894 arg.mEncoding = encoding; 1895 arg.mHistoryUrl = historyUrl; 1896 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1897 clearHelpers(); 1898 } 1899 1900 /** 1901 * Saves the current view as a web archive. 1902 * 1903 * @param filename The filename where the archive should be placed. 1904 */ 1905 public void saveWebArchive(String filename) { 1906 saveWebArchive(filename, false, null); 1907 } 1908 1909 /* package */ static class SaveWebArchiveMessage { 1910 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1911 mBasename = basename; 1912 mAutoname = autoname; 1913 mCallback = callback; 1914 } 1915 1916 /* package */ final String mBasename; 1917 /* package */ final boolean mAutoname; 1918 /* package */ final ValueCallback<String> mCallback; 1919 /* package */ String mResultFile; 1920 } 1921 1922 /** 1923 * Saves the current view as a web archive. 1924 * 1925 * @param basename The filename where the archive should be placed. 1926 * @param autoname If false, takes basename to be a file. If true, basename 1927 * is assumed to be a directory in which a filename will be 1928 * chosen according to the url of the current page. 1929 * @param callback Called after the web archive has been saved. The 1930 * parameter for onReceiveValue will either be the filename 1931 * under which the file was saved, or null if saving the 1932 * file failed. 1933 */ 1934 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1935 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1936 new SaveWebArchiveMessage(basename, autoname, callback)); 1937 } 1938 1939 /** 1940 * Stop the current load. 1941 */ 1942 public void stopLoading() { 1943 // TODO: should we clear all the messages in the queue before sending 1944 // STOP_LOADING? 1945 switchOutDrawHistory(); 1946 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1947 } 1948 1949 /** 1950 * Reload the current url. 1951 */ 1952 public void reload() { 1953 clearHelpers(); 1954 switchOutDrawHistory(); 1955 mWebViewCore.sendMessage(EventHub.RELOAD); 1956 } 1957 1958 /** 1959 * Return true if this WebView has a back history item. 1960 * @return True iff this WebView has a back history item. 1961 */ 1962 public boolean canGoBack() { 1963 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1964 synchronized (l) { 1965 if (l.getClearPending()) { 1966 return false; 1967 } else { 1968 return l.getCurrentIndex() > 0; 1969 } 1970 } 1971 } 1972 1973 /** 1974 * Go back in the history of this WebView. 1975 */ 1976 public void goBack() { 1977 goBackOrForward(-1); 1978 } 1979 1980 /** 1981 * Return true if this WebView has a forward history item. 1982 * @return True iff this Webview has a forward history item. 1983 */ 1984 public boolean canGoForward() { 1985 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1986 synchronized (l) { 1987 if (l.getClearPending()) { 1988 return false; 1989 } else { 1990 return l.getCurrentIndex() < l.getSize() - 1; 1991 } 1992 } 1993 } 1994 1995 /** 1996 * Go forward in the history of this WebView. 1997 */ 1998 public void goForward() { 1999 goBackOrForward(1); 2000 } 2001 2002 /** 2003 * Return true if the page can go back or forward the given 2004 * number of steps. 2005 * @param steps The negative or positive number of steps to move the 2006 * history. 2007 */ 2008 public boolean canGoBackOrForward(int steps) { 2009 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2010 synchronized (l) { 2011 if (l.getClearPending()) { 2012 return false; 2013 } else { 2014 int newIndex = l.getCurrentIndex() + steps; 2015 return newIndex >= 0 && newIndex < l.getSize(); 2016 } 2017 } 2018 } 2019 2020 /** 2021 * Go to the history item that is the number of steps away from 2022 * the current item. Steps is negative if backward and positive 2023 * if forward. 2024 * @param steps The number of steps to take back or forward in the back 2025 * forward list. 2026 */ 2027 public void goBackOrForward(int steps) { 2028 goBackOrForward(steps, false); 2029 } 2030 2031 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2032 if (steps != 0) { 2033 clearHelpers(); 2034 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2035 ignoreSnapshot ? 1 : 0); 2036 } 2037 } 2038 2039 /** 2040 * Returns true if private browsing is enabled in this WebView. 2041 */ 2042 public boolean isPrivateBrowsingEnabled() { 2043 return getSettings().isPrivateBrowsingEnabled(); 2044 } 2045 2046 private void startPrivateBrowsing() { 2047 getSettings().setPrivateBrowsingEnabled(true); 2048 } 2049 2050 private boolean extendScroll(int y) { 2051 int finalY = mScroller.getFinalY(); 2052 int newY = pinLocY(finalY + y); 2053 if (newY == finalY) return false; 2054 mScroller.setFinalY(newY); 2055 mScroller.extendDuration(computeDuration(0, y)); 2056 return true; 2057 } 2058 2059 /** 2060 * Scroll the contents of the view up by half the view size 2061 * @param top true to jump to the top of the page 2062 * @return true if the page was scrolled 2063 */ 2064 public boolean pageUp(boolean top) { 2065 if (mNativeClass == 0) { 2066 return false; 2067 } 2068 nativeClearCursor(); // start next trackball movement from page edge 2069 if (top) { 2070 // go to the top of the document 2071 return pinScrollTo(mScrollX, 0, true, 0); 2072 } 2073 // Page up 2074 int h = getHeight(); 2075 int y; 2076 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2077 y = -h + PAGE_SCROLL_OVERLAP; 2078 } else { 2079 y = -h / 2; 2080 } 2081 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2082 : extendScroll(y); 2083 } 2084 2085 /** 2086 * Scroll the contents of the view down by half the page size 2087 * @param bottom true to jump to bottom of page 2088 * @return true if the page was scrolled 2089 */ 2090 public boolean pageDown(boolean bottom) { 2091 if (mNativeClass == 0) { 2092 return false; 2093 } 2094 nativeClearCursor(); // start next trackball movement from page edge 2095 if (bottom) { 2096 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2097 } 2098 // Page down. 2099 int h = getHeight(); 2100 int y; 2101 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2102 y = h - PAGE_SCROLL_OVERLAP; 2103 } else { 2104 y = h / 2; 2105 } 2106 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2107 : extendScroll(y); 2108 } 2109 2110 /** 2111 * Clear the view so that onDraw() will draw nothing but white background, 2112 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2113 */ 2114 public void clearView() { 2115 mContentWidth = 0; 2116 mContentHeight = 0; 2117 setBaseLayer(0, null, false, false); 2118 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2119 } 2120 2121 /** 2122 * Return a new picture that captures the current display of the webview. 2123 * This is a copy of the display, and will be unaffected if the webview 2124 * later loads a different URL. 2125 * 2126 * @return a picture containing the current contents of the view. Note this 2127 * picture is of the entire document, and is not restricted to the 2128 * bounds of the view. 2129 */ 2130 public Picture capturePicture() { 2131 if (mNativeClass == 0) return null; 2132 Picture result = new Picture(); 2133 nativeCopyBaseContentToPicture(result); 2134 return result; 2135 } 2136 2137 /** 2138 * Return true if the browser is displaying a TextView for text input. 2139 */ 2140 private boolean inEditingMode() { 2141 return mWebTextView != null && mWebTextView.getParent() != null; 2142 } 2143 2144 /** 2145 * Remove the WebTextView. 2146 */ 2147 private void clearTextEntry() { 2148 if (inEditingMode()) { 2149 mWebTextView.remove(); 2150 } else { 2151 // The keyboard may be open with the WebView as the served view 2152 hideSoftKeyboard(); 2153 } 2154 } 2155 2156 /** 2157 * Return the current scale of the WebView 2158 * @return The current scale. 2159 */ 2160 public float getScale() { 2161 return mZoomManager.getScale(); 2162 } 2163 2164 /** 2165 * Set the initial scale for the WebView. 0 means default. If 2166 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2167 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2168 * WebView starts will this value as initial scale. 2169 * 2170 * @param scaleInPercent The initial scale in percent. 2171 */ 2172 public void setInitialScale(int scaleInPercent) { 2173 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2174 } 2175 2176 /** 2177 * Invoke the graphical zoom picker widget for this WebView. This will 2178 * result in the zoom widget appearing on the screen to control the zoom 2179 * level of this WebView. 2180 */ 2181 public void invokeZoomPicker() { 2182 if (!getSettings().supportZoom()) { 2183 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2184 return; 2185 } 2186 clearHelpers(); 2187 mZoomManager.invokeZoomPicker(); 2188 } 2189 2190 /** 2191 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2192 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2193 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2194 * anchor does not have a url or if it is a JavaScript url, the type will 2195 * be UNKNOWN_TYPE and the url has to be retrieved through 2196 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2197 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2198 * the "extra" field. A type of 2199 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2200 * a child node. If a phone number is found, the HitTestResult type is set 2201 * to PHONE_TYPE and the phone number is set in the "extra" field of 2202 * HitTestResult. If a map address is found, the HitTestResult type is set 2203 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2204 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2205 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2206 * HitTestResult type is set to UNKNOWN_TYPE. 2207 */ 2208 public HitTestResult getHitTestResult() { 2209 return hitTestResult(mInitialHitTestResult); 2210 } 2211 2212 private HitTestResult hitTestResult(HitTestResult fallback) { 2213 if (mNativeClass == 0) { 2214 return null; 2215 } 2216 2217 HitTestResult result = new HitTestResult(); 2218 if (nativeHasCursorNode()) { 2219 if (nativeCursorIsTextInput()) { 2220 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2221 } else { 2222 String text = nativeCursorText(); 2223 if (text != null) { 2224 if (text.startsWith(SCHEME_TEL)) { 2225 result.setType(HitTestResult.PHONE_TYPE); 2226 result.setExtra(text.substring(SCHEME_TEL.length())); 2227 } else if (text.startsWith(SCHEME_MAILTO)) { 2228 result.setType(HitTestResult.EMAIL_TYPE); 2229 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2230 } else if (text.startsWith(SCHEME_GEO)) { 2231 result.setType(HitTestResult.GEO_TYPE); 2232 result.setExtra(URLDecoder.decode(text 2233 .substring(SCHEME_GEO.length()))); 2234 } else if (nativeCursorIsAnchor()) { 2235 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2236 result.setExtra(text); 2237 } 2238 } 2239 } 2240 } else if (fallback != null) { 2241 /* If webkit causes a rebuild while the long press is in progress, 2242 * the cursor node may be reset, even if it is still around. This 2243 * uses the cursor node saved when the touch began. Since the 2244 * nativeImageURI below only changes the result if it is successful, 2245 * this uses the data beneath the touch if available or the original 2246 * tap data otherwise. 2247 */ 2248 Log.v(LOGTAG, "hitTestResult use fallback"); 2249 result = fallback; 2250 } 2251 int type = result.getType(); 2252 if (type == HitTestResult.UNKNOWN_TYPE 2253 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2254 // Now check to see if it is an image. 2255 int contentX = viewToContentX(mLastTouchX + mScrollX); 2256 int contentY = viewToContentY(mLastTouchY + mScrollY); 2257 String text = nativeImageURI(contentX, contentY); 2258 if (text != null) { 2259 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2260 HitTestResult.IMAGE_TYPE : 2261 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2262 result.setExtra(text); 2263 } 2264 } 2265 return result; 2266 } 2267 2268 // Called by JNI when the DOM has changed the focus. Clear the focus so 2269 // that new keys will go to the newly focused field 2270 private void domChangedFocus() { 2271 if (inEditingMode()) { 2272 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2273 } 2274 } 2275 /** 2276 * Request the anchor or image element URL at the last tapped point. 2277 * If hrefMsg is null, this method returns immediately and does not 2278 * dispatch hrefMsg to its target. If the tapped point hits an image, 2279 * an anchor, or an image in an anchor, the message associates 2280 * strings in named keys in its data. The value paired with the key 2281 * may be an empty string. 2282 * 2283 * @param hrefMsg This message will be dispatched with the result of the 2284 * request. The message data contains three keys: 2285 * - "url" returns the anchor's href attribute. 2286 * - "title" returns the anchor's text. 2287 * - "src" returns the image's src attribute. 2288 */ 2289 public void requestFocusNodeHref(Message hrefMsg) { 2290 if (hrefMsg == null) { 2291 return; 2292 } 2293 int contentX = viewToContentX(mLastTouchX + mScrollX); 2294 int contentY = viewToContentY(mLastTouchY + mScrollY); 2295 if (nativeHasCursorNode()) { 2296 Rect cursorBounds = nativeGetCursorRingBounds(); 2297 if (!cursorBounds.contains(contentX, contentY)) { 2298 int slop = viewToContentDimension(mNavSlop); 2299 cursorBounds.inset(-slop, -slop); 2300 if (cursorBounds.contains(contentX, contentY)) { 2301 contentX = (int) cursorBounds.centerX(); 2302 contentY = (int) cursorBounds.centerY(); 2303 } 2304 } 2305 } 2306 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2307 contentX, contentY, hrefMsg); 2308 } 2309 2310 /** 2311 * Request the url of the image last touched by the user. msg will be sent 2312 * to its target with a String representing the url as its object. 2313 * 2314 * @param msg This message will be dispatched with the result of the request 2315 * as the data member with "url" as key. The result can be null. 2316 */ 2317 public void requestImageRef(Message msg) { 2318 if (0 == mNativeClass) return; // client isn't initialized 2319 int contentX = viewToContentX(mLastTouchX + mScrollX); 2320 int contentY = viewToContentY(mLastTouchY + mScrollY); 2321 String ref = nativeImageURI(contentX, contentY); 2322 Bundle data = msg.getData(); 2323 data.putString("url", ref); 2324 msg.setData(data); 2325 msg.sendToTarget(); 2326 } 2327 2328 static int pinLoc(int x, int viewMax, int docMax) { 2329// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2330 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2331 // pin the short document to the top/left of the screen 2332 x = 0; 2333// Log.d(LOGTAG, "--- center " + x); 2334 } else if (x < 0) { 2335 x = 0; 2336// Log.d(LOGTAG, "--- zero"); 2337 } else if (x + viewMax > docMax) { 2338 x = docMax - viewMax; 2339// Log.d(LOGTAG, "--- pin " + x); 2340 } 2341 return x; 2342 } 2343 2344 // Expects x in view coordinates 2345 int pinLocX(int x) { 2346 if (mInOverScrollMode) return x; 2347 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2348 } 2349 2350 // Expects y in view coordinates 2351 int pinLocY(int y) { 2352 if (mInOverScrollMode) return y; 2353 return pinLoc(y, getViewHeightWithTitle(), 2354 computeRealVerticalScrollRange() + getTitleHeight()); 2355 } 2356 2357 /** 2358 * A title bar which is embedded in this WebView, and scrolls along with it 2359 * vertically, but not horizontally. 2360 */ 2361 private View mTitleBar; 2362 2363 /** 2364 * the title bar rendering gravity 2365 */ 2366 private int mTitleGravity; 2367 2368 /** 2369 * Add or remove a title bar to be embedded into the WebView, and scroll 2370 * along with it vertically, while remaining in view horizontally. Pass 2371 * null to remove the title bar from the WebView, and return to drawing 2372 * the WebView normally without translating to account for the title bar. 2373 * @hide 2374 */ 2375 public void setEmbeddedTitleBar(View v) { 2376 if (mTitleBar == v) return; 2377 if (mTitleBar != null) { 2378 removeView(mTitleBar); 2379 } 2380 if (null != v) { 2381 addView(v, new AbsoluteLayout.LayoutParams( 2382 ViewGroup.LayoutParams.MATCH_PARENT, 2383 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2384 } 2385 mTitleBar = v; 2386 } 2387 2388 /** 2389 * Set where to render the embedded title bar 2390 * NO_GRAVITY at the top of the page 2391 * TOP at the top of the screen 2392 * @hide 2393 */ 2394 public void setTitleBarGravity(int gravity) { 2395 mTitleGravity = gravity; 2396 } 2397 2398 /** 2399 * Given a distance in view space, convert it to content space. Note: this 2400 * does not reflect translation, just scaling, so this should not be called 2401 * with coordinates, but should be called for dimensions like width or 2402 * height. 2403 */ 2404 private int viewToContentDimension(int d) { 2405 return Math.round(d * mZoomManager.getInvScale()); 2406 } 2407 2408 /** 2409 * Given an x coordinate in view space, convert it to content space. Also 2410 * may be used for absolute heights (such as for the WebTextView's 2411 * textSize, which is unaffected by the height of the title bar). 2412 */ 2413 /*package*/ int viewToContentX(int x) { 2414 return viewToContentDimension(x); 2415 } 2416 2417 /** 2418 * Given a y coordinate in view space, convert it to content space. 2419 * Takes into account the height of the title bar if there is one 2420 * embedded into the WebView. 2421 */ 2422 /*package*/ int viewToContentY(int y) { 2423 return viewToContentDimension(y - getTitleHeight()); 2424 } 2425 2426 /** 2427 * Given a x coordinate in view space, convert it to content space. 2428 * Returns the result as a float. 2429 */ 2430 private float viewToContentXf(int x) { 2431 return x * mZoomManager.getInvScale(); 2432 } 2433 2434 /** 2435 * Given a y coordinate in view space, convert it to content space. 2436 * Takes into account the height of the title bar if there is one 2437 * embedded into the WebView. Returns the result as a float. 2438 */ 2439 private float viewToContentYf(int y) { 2440 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2441 } 2442 2443 /** 2444 * Given a distance in content space, convert it to view space. Note: this 2445 * does not reflect translation, just scaling, so this should not be called 2446 * with coordinates, but should be called for dimensions like width or 2447 * height. 2448 */ 2449 /*package*/ int contentToViewDimension(int d) { 2450 return Math.round(d * mZoomManager.getScale()); 2451 } 2452 2453 /** 2454 * Given an x coordinate in content space, convert it to view 2455 * space. 2456 */ 2457 /*package*/ int contentToViewX(int x) { 2458 return contentToViewDimension(x); 2459 } 2460 2461 /** 2462 * Given a y coordinate in content space, convert it to view 2463 * space. Takes into account the height of the title bar. 2464 */ 2465 /*package*/ int contentToViewY(int y) { 2466 return contentToViewDimension(y) + getTitleHeight(); 2467 } 2468 2469 private Rect contentToViewRect(Rect x) { 2470 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2471 contentToViewX(x.right), contentToViewY(x.bottom)); 2472 } 2473 2474 /* To invalidate a rectangle in content coordinates, we need to transform 2475 the rect into view coordinates, so we can then call invalidate(...). 2476 2477 Normally, we would just call contentToView[XY](...), which eventually 2478 calls Math.round(coordinate * mActualScale). However, for invalidates, 2479 we need to account for the slop that occurs with antialiasing. To 2480 address that, we are a little more liberal in the size of the rect that 2481 we invalidate. 2482 2483 This liberal calculation calls floor() for the top/left, and ceil() for 2484 the bottom/right coordinates. This catches the possible extra pixels of 2485 antialiasing that we might have missed with just round(). 2486 */ 2487 2488 // Called by JNI to invalidate the View, given rectangle coordinates in 2489 // content space 2490 private void viewInvalidate(int l, int t, int r, int b) { 2491 final float scale = mZoomManager.getScale(); 2492 final int dy = getTitleHeight(); 2493 invalidate((int)Math.floor(l * scale), 2494 (int)Math.floor(t * scale) + dy, 2495 (int)Math.ceil(r * scale), 2496 (int)Math.ceil(b * scale) + dy); 2497 } 2498 2499 // Called by JNI to invalidate the View after a delay, given rectangle 2500 // coordinates in content space 2501 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2502 final float scale = mZoomManager.getScale(); 2503 final int dy = getTitleHeight(); 2504 postInvalidateDelayed(delay, 2505 (int)Math.floor(l * scale), 2506 (int)Math.floor(t * scale) + dy, 2507 (int)Math.ceil(r * scale), 2508 (int)Math.ceil(b * scale) + dy); 2509 } 2510 2511 private void invalidateContentRect(Rect r) { 2512 viewInvalidate(r.left, r.top, r.right, r.bottom); 2513 } 2514 2515 // stop the scroll animation, and don't let a subsequent fling add 2516 // to the existing velocity 2517 private void abortAnimation() { 2518 mScroller.abortAnimation(); 2519 mLastVelocity = 0; 2520 } 2521 2522 /* call from webcoreview.draw(), so we're still executing in the UI thread 2523 */ 2524 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2525 2526 // premature data from webkit, ignore 2527 if ((w | h) == 0) { 2528 return; 2529 } 2530 2531 // don't abort a scroll animation if we didn't change anything 2532 if (mContentWidth != w || mContentHeight != h) { 2533 // record new dimensions 2534 mContentWidth = w; 2535 mContentHeight = h; 2536 // If history Picture is drawn, don't update scroll. They will be 2537 // updated when we get out of that mode. 2538 if (!mDrawHistory) { 2539 // repin our scroll, taking into account the new content size 2540 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2541 if (!mScroller.isFinished()) { 2542 // We are in the middle of a scroll. Repin the final scroll 2543 // position. 2544 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2545 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2546 } 2547 } 2548 } 2549 contentSizeChanged(updateLayout); 2550 } 2551 2552 // Used to avoid sending many visible rect messages. 2553 private Rect mLastVisibleRectSent; 2554 private Rect mLastGlobalRect; 2555 2556 Rect sendOurVisibleRect() { 2557 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2558 Rect rect = new Rect(); 2559 calcOurContentVisibleRect(rect); 2560 // Rect.equals() checks for null input. 2561 if (!rect.equals(mLastVisibleRectSent)) { 2562 Point pos = new Point(rect.left, rect.top); 2563 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2564 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2565 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, pos); 2566 mLastVisibleRectSent = rect; 2567 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2568 } 2569 Rect globalRect = new Rect(); 2570 if (getGlobalVisibleRect(globalRect) 2571 && !globalRect.equals(mLastGlobalRect)) { 2572 if (DebugFlags.WEB_VIEW) { 2573 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2574 + globalRect.top + ",r=" + globalRect.right + ",b=" 2575 + globalRect.bottom); 2576 } 2577 // TODO: the global offset is only used by windowRect() 2578 // in ChromeClientAndroid ; other clients such as touch 2579 // and mouse events could return view + screen relative points. 2580 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2581 mLastGlobalRect = globalRect; 2582 } 2583 return rect; 2584 } 2585 2586 // Sets r to be the visible rectangle of our webview in view coordinates 2587 private void calcOurVisibleRect(Rect r) { 2588 Point p = new Point(); 2589 getGlobalVisibleRect(r, p); 2590 r.offset(-p.x, -p.y); 2591 } 2592 2593 // Sets r to be our visible rectangle in content coordinates 2594 private void calcOurContentVisibleRect(Rect r) { 2595 calcOurVisibleRect(r); 2596 r.left = viewToContentX(r.left); 2597 // viewToContentY will remove the total height of the title bar. Add 2598 // the visible height back in to account for the fact that if the title 2599 // bar is partially visible, the part of the visible rect which is 2600 // displaying our content is displaced by that amount. 2601 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2602 r.right = viewToContentX(r.right); 2603 r.bottom = viewToContentY(r.bottom); 2604 } 2605 2606 // Sets r to be our visible rectangle in content coordinates. We use this 2607 // method on the native side to compute the position of the fixed layers. 2608 // Uses floating coordinates (necessary to correctly place elements when 2609 // the scale factor is not 1) 2610 private void calcOurContentVisibleRectF(RectF r) { 2611 Rect ri = new Rect(0,0,0,0); 2612 calcOurVisibleRect(ri); 2613 r.left = viewToContentXf(ri.left); 2614 // viewToContentY will remove the total height of the title bar. Add 2615 // the visible height back in to account for the fact that if the title 2616 // bar is partially visible, the part of the visible rect which is 2617 // displaying our content is displaced by that amount. 2618 r.top = viewToContentYf(ri.top + getVisibleTitleHeight()); 2619 r.right = viewToContentXf(ri.right); 2620 r.bottom = viewToContentYf(ri.bottom); 2621 } 2622 2623 static class ViewSizeData { 2624 int mWidth; 2625 int mHeight; 2626 float mHeightWidthRatio; 2627 int mActualViewHeight; 2628 int mTextWrapWidth; 2629 int mAnchorX; 2630 int mAnchorY; 2631 float mScale; 2632 boolean mIgnoreHeight; 2633 } 2634 2635 /** 2636 * Compute unzoomed width and height, and if they differ from the last 2637 * values we sent, send them to webkit (to be used as new viewport) 2638 * 2639 * @param force ensures that the message is sent to webkit even if the width 2640 * or height has not changed since the last message 2641 * 2642 * @return true if new values were sent 2643 */ 2644 boolean sendViewSizeZoom(boolean force) { 2645 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2646 2647 int viewWidth = getViewWidth(); 2648 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2649 // This height could be fixed and be different from actual visible height. 2650 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 2651 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 2652 // Make the ratio more accurate than (newHeight / newWidth), since the 2653 // latter both are calculated and rounded. 2654 float heightWidthRatio = (float) viewHeight / viewWidth; 2655 /* 2656 * Because the native side may have already done a layout before the 2657 * View system was able to measure us, we have to send a height of 0 to 2658 * remove excess whitespace when we grow our width. This will trigger a 2659 * layout and a change in content size. This content size change will 2660 * mean that contentSizeChanged will either call this method directly or 2661 * indirectly from onSizeChanged. 2662 */ 2663 if (newWidth > mLastWidthSent && mWrapContent) { 2664 newHeight = 0; 2665 heightWidthRatio = 0; 2666 } 2667 // Actual visible content height. 2668 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 2669 // Avoid sending another message if the dimensions have not changed. 2670 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 2671 actualViewHeight != mLastActualHeightSent) { 2672 ViewSizeData data = new ViewSizeData(); 2673 data.mWidth = newWidth; 2674 data.mHeight = newHeight; 2675 data.mHeightWidthRatio = heightWidthRatio; 2676 data.mActualViewHeight = actualViewHeight; 2677 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2678 data.mScale = mZoomManager.getScale(); 2679 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2680 && !mHeightCanMeasure; 2681 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2682 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2683 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2684 mLastWidthSent = newWidth; 2685 mLastHeightSent = newHeight; 2686 mLastActualHeightSent = actualViewHeight; 2687 mZoomManager.clearDocumentAnchor(); 2688 return true; 2689 } 2690 return false; 2691 } 2692 2693 private int computeRealHorizontalScrollRange() { 2694 if (mDrawHistory) { 2695 return mHistoryWidth; 2696 } else { 2697 // to avoid rounding error caused unnecessary scrollbar, use floor 2698 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2699 } 2700 } 2701 2702 @Override 2703 protected int computeHorizontalScrollRange() { 2704 int range = computeRealHorizontalScrollRange(); 2705 2706 // Adjust reported range if overscrolled to compress the scroll bars 2707 final int scrollX = mScrollX; 2708 final int overscrollRight = computeMaxScrollX(); 2709 if (scrollX < 0) { 2710 range -= scrollX; 2711 } else if (scrollX > overscrollRight) { 2712 range += scrollX - overscrollRight; 2713 } 2714 2715 return range; 2716 } 2717 2718 @Override 2719 protected int computeHorizontalScrollOffset() { 2720 return Math.max(mScrollX, 0); 2721 } 2722 2723 private int computeRealVerticalScrollRange() { 2724 if (mDrawHistory) { 2725 return mHistoryHeight; 2726 } else { 2727 // to avoid rounding error caused unnecessary scrollbar, use floor 2728 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2729 } 2730 } 2731 2732 @Override 2733 protected int computeVerticalScrollRange() { 2734 int range = computeRealVerticalScrollRange(); 2735 2736 // Adjust reported range if overscrolled to compress the scroll bars 2737 final int scrollY = mScrollY; 2738 final int overscrollBottom = computeMaxScrollY(); 2739 if (scrollY < 0) { 2740 range -= scrollY; 2741 } else if (scrollY > overscrollBottom) { 2742 range += scrollY - overscrollBottom; 2743 } 2744 2745 return range; 2746 } 2747 2748 @Override 2749 protected int computeVerticalScrollOffset() { 2750 return Math.max(mScrollY - getTitleHeight(), 0); 2751 } 2752 2753 @Override 2754 protected int computeVerticalScrollExtent() { 2755 return getViewHeight(); 2756 } 2757 2758 /** @hide */ 2759 @Override 2760 protected void onDrawVerticalScrollBar(Canvas canvas, 2761 Drawable scrollBar, 2762 int l, int t, int r, int b) { 2763 if (mScrollY < 0) { 2764 t -= mScrollY; 2765 } 2766 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2767 scrollBar.draw(canvas); 2768 } 2769 2770 @Override 2771 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 2772 boolean clampedY) { 2773 // Special-case layer scrolling so that we do not trigger normal scroll 2774 // updating. 2775 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 2776 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 2777 mScrollingLayerRect.left = scrollX; 2778 mScrollingLayerRect.top = scrollY; 2779 invalidate(); 2780 return; 2781 } 2782 mInOverScrollMode = false; 2783 int maxX = computeMaxScrollX(); 2784 int maxY = computeMaxScrollY(); 2785 if (maxX == 0) { 2786 // do not over scroll x if the page just fits the screen 2787 scrollX = pinLocX(scrollX); 2788 } else if (scrollX < 0 || scrollX > maxX) { 2789 mInOverScrollMode = true; 2790 } 2791 if (scrollY < 0 || scrollY > maxY) { 2792 mInOverScrollMode = true; 2793 } 2794 2795 int oldX = mScrollX; 2796 int oldY = mScrollY; 2797 2798 super.scrollTo(scrollX, scrollY); 2799 2800 if (mOverScrollGlow != null) { 2801 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 2802 } 2803 } 2804 2805 /** 2806 * Get the url for the current page. This is not always the same as the url 2807 * passed to WebViewClient.onPageStarted because although the load for 2808 * that url has begun, the current page may not have changed. 2809 * @return The url for the current page. 2810 */ 2811 public String getUrl() { 2812 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2813 return h != null ? h.getUrl() : null; 2814 } 2815 2816 /** 2817 * Get the original url for the current page. This is not always the same 2818 * as the url passed to WebViewClient.onPageStarted because although the 2819 * load for that url has begun, the current page may not have changed. 2820 * Also, there may have been redirects resulting in a different url to that 2821 * originally requested. 2822 * @return The url that was originally requested for the current page. 2823 */ 2824 public String getOriginalUrl() { 2825 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2826 return h != null ? h.getOriginalUrl() : null; 2827 } 2828 2829 /** 2830 * Get the title for the current page. This is the title of the current page 2831 * until WebViewClient.onReceivedTitle is called. 2832 * @return The title for the current page. 2833 */ 2834 public String getTitle() { 2835 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2836 return h != null ? h.getTitle() : null; 2837 } 2838 2839 /** 2840 * Get the favicon for the current page. This is the favicon of the current 2841 * page until WebViewClient.onReceivedIcon is called. 2842 * @return The favicon for the current page. 2843 */ 2844 public Bitmap getFavicon() { 2845 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2846 return h != null ? h.getFavicon() : null; 2847 } 2848 2849 /** 2850 * Get the touch icon url for the apple-touch-icon <link> element, or 2851 * a URL on this site's server pointing to the standard location of a 2852 * touch icon. 2853 * @hide 2854 */ 2855 public String getTouchIconUrl() { 2856 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2857 return h != null ? h.getTouchIconUrl() : null; 2858 } 2859 2860 /** 2861 * Get the progress for the current page. 2862 * @return The progress for the current page between 0 and 100. 2863 */ 2864 public int getProgress() { 2865 return mCallbackProxy.getProgress(); 2866 } 2867 2868 /** 2869 * @return the height of the HTML content. 2870 */ 2871 public int getContentHeight() { 2872 return mContentHeight; 2873 } 2874 2875 /** 2876 * @return the width of the HTML content. 2877 * @hide 2878 */ 2879 public int getContentWidth() { 2880 return mContentWidth; 2881 } 2882 2883 /** 2884 * Pause all layout, parsing, and JavaScript timers for all webviews. This 2885 * is a global requests, not restricted to just this webview. This can be 2886 * useful if the application has been paused. 2887 */ 2888 public void pauseTimers() { 2889 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2890 } 2891 2892 /** 2893 * Resume all layout, parsing, and JavaScript timers for all webviews. 2894 * This will resume dispatching all timers. 2895 */ 2896 public void resumeTimers() { 2897 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2898 } 2899 2900 /** 2901 * Call this to pause any extra processing associated with this WebView and 2902 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 2903 * is taken offscreen, this could be called to reduce unnecessary CPU or 2904 * network traffic. When the WebView is again "active", call onResume(). 2905 * 2906 * Note that this differs from pauseTimers(), which affects all WebViews. 2907 */ 2908 public void onPause() { 2909 if (!mIsPaused) { 2910 mIsPaused = true; 2911 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2912 // We want to pause the current playing video when switching out 2913 // from the current WebView/tab. 2914 if (mHTML5VideoViewProxy != null) { 2915 mHTML5VideoViewProxy.pauseAndDispatch(); 2916 } 2917 } 2918 } 2919 2920 /** 2921 * Call this to resume a WebView after a previous call to onPause(). 2922 */ 2923 public void onResume() { 2924 if (mIsPaused) { 2925 mIsPaused = false; 2926 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2927 } 2928 } 2929 2930 /** 2931 * Returns true if the view is paused, meaning onPause() was called. Calling 2932 * onResume() sets the paused state back to false. 2933 * @hide 2934 */ 2935 public boolean isPaused() { 2936 return mIsPaused; 2937 } 2938 2939 /** 2940 * Call this to inform the view that memory is low so that it can 2941 * free any available memory. 2942 */ 2943 public void freeMemory() { 2944 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2945 } 2946 2947 /** 2948 * Clear the resource cache. Note that the cache is per-application, so 2949 * this will clear the cache for all WebViews used. 2950 * 2951 * @param includeDiskFiles If false, only the RAM cache is cleared. 2952 */ 2953 public void clearCache(boolean includeDiskFiles) { 2954 // Note: this really needs to be a static method as it clears cache for all 2955 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2956 // we can't make this static. 2957 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2958 includeDiskFiles ? 1 : 0, 0); 2959 } 2960 2961 /** 2962 * Make sure that clearing the form data removes the adapter from the 2963 * currently focused textfield if there is one. 2964 */ 2965 public void clearFormData() { 2966 if (inEditingMode()) { 2967 AutoCompleteAdapter adapter = null; 2968 mWebTextView.setAdapterCustom(adapter); 2969 } 2970 } 2971 2972 /** 2973 * Tell the WebView to clear its internal back/forward list. 2974 */ 2975 public void clearHistory() { 2976 mCallbackProxy.getBackForwardList().setClearPending(); 2977 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2978 } 2979 2980 /** 2981 * Clear the SSL preferences table stored in response to proceeding with SSL 2982 * certificate errors. 2983 */ 2984 public void clearSslPreferences() { 2985 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2986 } 2987 2988 /** 2989 * Return the WebBackForwardList for this WebView. This contains the 2990 * back/forward list for use in querying each item in the history stack. 2991 * This is a copy of the private WebBackForwardList so it contains only a 2992 * snapshot of the current state. Multiple calls to this method may return 2993 * different objects. The object returned from this method will not be 2994 * updated to reflect any new state. 2995 */ 2996 public WebBackForwardList copyBackForwardList() { 2997 return mCallbackProxy.getBackForwardList().clone(); 2998 } 2999 3000 /* 3001 * Highlight and scroll to the next occurance of String in findAll. 3002 * Wraps the page infinitely, and scrolls. Must be called after 3003 * calling findAll. 3004 * 3005 * @param forward Direction to search. 3006 */ 3007 public void findNext(boolean forward) { 3008 if (0 == mNativeClass) return; // client isn't initialized 3009 nativeFindNext(forward); 3010 } 3011 3012 /* 3013 * Find all instances of find on the page and highlight them. 3014 * @param find String to find. 3015 * @return int The number of occurances of the String "find" 3016 * that were found. 3017 */ 3018 public int findAll(String find) { 3019 if (0 == mNativeClass) return 0; // client isn't initialized 3020 int result = find != null ? nativeFindAll(find.toLowerCase(), 3021 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3022 invalidate(); 3023 mLastFind = find; 3024 return result; 3025 } 3026 3027 /** 3028 * Start an ActionMode for finding text in this WebView. Only works if this 3029 * WebView is attached to the view system. 3030 * @param text If non-null, will be the initial text to search for. 3031 * Otherwise, the last String searched for in this WebView will 3032 * be used to start. 3033 * @param showIme If true, show the IME, assuming the user will begin typing. 3034 * If false and text is non-null, perform a find all. 3035 * @return boolean True if the find dialog is shown, false otherwise. 3036 */ 3037 public boolean showFindDialog(String text, boolean showIme) { 3038 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3039 if (getParent() == null || startActionMode(callback) == null) { 3040 // Could not start the action mode, so end Find on page 3041 return false; 3042 } 3043 mFindCallback = callback; 3044 setFindIsUp(true); 3045 mFindCallback.setWebView(this); 3046 if (showIme) { 3047 mFindCallback.showSoftInput(); 3048 } else if (text != null) { 3049 mFindCallback.setText(text); 3050 mFindCallback.findAll(); 3051 return true; 3052 } 3053 if (text == null) { 3054 text = mLastFind; 3055 } 3056 if (text != null) { 3057 mFindCallback.setText(text); 3058 } 3059 return true; 3060 } 3061 3062 /** 3063 * Keep track of the find callback so that we can remove its titlebar if 3064 * necessary. 3065 */ 3066 private FindActionModeCallback mFindCallback; 3067 3068 /** 3069 * Toggle whether the find dialog is showing, for both native and Java. 3070 */ 3071 private void setFindIsUp(boolean isUp) { 3072 mFindIsUp = isUp; 3073 if (0 == mNativeClass) return; // client isn't initialized 3074 nativeSetFindIsUp(isUp); 3075 } 3076 3077 /** 3078 * Return the index of the currently highlighted match. 3079 */ 3080 int findIndex() { 3081 if (0 == mNativeClass) return -1; 3082 return nativeFindIndex(); 3083 } 3084 3085 // Used to know whether the find dialog is open. Affects whether 3086 // or not we draw the highlights for matches. 3087 private boolean mFindIsUp; 3088 3089 // Keep track of the last string sent, so we can search again when find is 3090 // reopened. 3091 private String mLastFind; 3092 3093 /** 3094 * Return the first substring consisting of the address of a physical 3095 * location. Currently, only addresses in the United States are detected, 3096 * and consist of: 3097 * - a house number 3098 * - a street name 3099 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3100 * - a city name 3101 * - a state or territory, either spelled out or two-letter abbr. 3102 * - an optional 5 digit or 9 digit zip code. 3103 * 3104 * All names must be correctly capitalized, and the zip code, if present, 3105 * must be valid for the state. The street type must be a standard USPS 3106 * spelling or abbreviation. The state or territory must also be spelled 3107 * or abbreviated using USPS standards. The house number may not exceed 3108 * five digits. 3109 * @param addr The string to search for addresses. 3110 * 3111 * @return the address, or if no address is found, return null. 3112 */ 3113 public static String findAddress(String addr) { 3114 return findAddress(addr, false); 3115 } 3116 3117 /** 3118 * @hide 3119 * Return the first substring consisting of the address of a physical 3120 * location. Currently, only addresses in the United States are detected, 3121 * and consist of: 3122 * - a house number 3123 * - a street name 3124 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3125 * - a city name 3126 * - a state or territory, either spelled out or two-letter abbr. 3127 * - an optional 5 digit or 9 digit zip code. 3128 * 3129 * Names are optionally capitalized, and the zip code, if present, 3130 * must be valid for the state. The street type must be a standard USPS 3131 * spelling or abbreviation. The state or territory must also be spelled 3132 * or abbreviated using USPS standards. The house number may not exceed 3133 * five digits. 3134 * @param addr The string to search for addresses. 3135 * @param caseInsensitive addr Set to true to make search ignore case. 3136 * 3137 * @return the address, or if no address is found, return null. 3138 */ 3139 public static String findAddress(String addr, boolean caseInsensitive) { 3140 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3141 } 3142 3143 /* 3144 * Clear the highlighting surrounding text matches created by findAll. 3145 */ 3146 public void clearMatches() { 3147 if (mNativeClass == 0) 3148 return; 3149 nativeSetFindIsEmpty(); 3150 invalidate(); 3151 } 3152 3153 /** 3154 * Called when the find ActionMode ends. 3155 */ 3156 void notifyFindDialogDismissed() { 3157 mFindCallback = null; 3158 if (mWebViewCore == null) { 3159 return; 3160 } 3161 clearMatches(); 3162 setFindIsUp(false); 3163 // Now that the dialog has been removed, ensure that we scroll to a 3164 // location that is not beyond the end of the page. 3165 pinScrollTo(mScrollX, mScrollY, false, 0); 3166 invalidate(); 3167 } 3168 3169 /** 3170 * Query the document to see if it contains any image references. The 3171 * message object will be dispatched with arg1 being set to 1 if images 3172 * were found and 0 if the document does not reference any images. 3173 * @param response The message that will be dispatched with the result. 3174 */ 3175 public void documentHasImages(Message response) { 3176 if (response == null) { 3177 return; 3178 } 3179 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3180 } 3181 3182 /** 3183 * Request the scroller to abort any ongoing animation 3184 * 3185 * @hide 3186 */ 3187 public void stopScroll() { 3188 mScroller.forceFinished(true); 3189 mLastVelocity = 0; 3190 } 3191 3192 @Override 3193 public void computeScroll() { 3194 if (mScroller.computeScrollOffset()) { 3195 int oldX = mScrollX; 3196 int oldY = mScrollY; 3197 int x = mScroller.getCurrX(); 3198 int y = mScroller.getCurrY(); 3199 invalidate(); // So we draw again 3200 3201 if (!mScroller.isFinished()) { 3202 int rangeX = computeMaxScrollX(); 3203 int rangeY = computeMaxScrollY(); 3204 int overflingDistance = mOverflingDistance; 3205 3206 // Use the layer's scroll data if needed. 3207 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3208 oldX = mScrollingLayerRect.left; 3209 oldY = mScrollingLayerRect.top; 3210 rangeX = mScrollingLayerRect.right; 3211 rangeY = mScrollingLayerRect.bottom; 3212 // No overscrolling for layers. 3213 overflingDistance = 0; 3214 } 3215 3216 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3217 rangeX, rangeY, 3218 overflingDistance, overflingDistance, false); 3219 3220 if (mOverScrollGlow != null) { 3221 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3222 } 3223 } else { 3224 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3225 mScrollX = x; 3226 mScrollY = y; 3227 } else { 3228 // Update the layer position instead of WebView. 3229 nativeScrollLayer(mScrollingLayer, x, y); 3230 mScrollingLayerRect.left = x; 3231 mScrollingLayerRect.top = y; 3232 } 3233 abortAnimation(); 3234 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3235 WebViewCore.resumePriority(); 3236 if (!mSelectingText) { 3237 WebViewCore.resumeUpdatePicture(mWebViewCore); 3238 } 3239 if (oldX != mScrollX || oldY != mScrollY) { 3240 sendOurVisibleRect(); 3241 } 3242 } 3243 } else { 3244 super.computeScroll(); 3245 } 3246 } 3247 3248 private static int computeDuration(int dx, int dy) { 3249 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3250 int duration = distance * 1000 / STD_SPEED; 3251 return Math.min(duration, MAX_DURATION); 3252 } 3253 3254 // helper to pin the scrollBy parameters (already in view coordinates) 3255 // returns true if the scroll was changed 3256 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3257 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3258 } 3259 // helper to pin the scrollTo parameters (already in view coordinates) 3260 // returns true if the scroll was changed 3261 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3262 x = pinLocX(x); 3263 y = pinLocY(y); 3264 int dx = x - mScrollX; 3265 int dy = y - mScrollY; 3266 3267 if ((dx | dy) == 0) { 3268 return false; 3269 } 3270 abortAnimation(); 3271 if (animate) { 3272 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3273 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3274 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3275 awakenScrollBars(mScroller.getDuration()); 3276 invalidate(); 3277 } else { 3278 scrollTo(x, y); 3279 } 3280 return true; 3281 } 3282 3283 // Scale from content to view coordinates, and pin. 3284 // Also called by jni webview.cpp 3285 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3286 if (mDrawHistory) { 3287 // disallow WebView to change the scroll position as History Picture 3288 // is used in the view system. 3289 // TODO: as we switchOutDrawHistory when trackball or navigation 3290 // keys are hit, this should be safe. Right? 3291 return false; 3292 } 3293 cx = contentToViewDimension(cx); 3294 cy = contentToViewDimension(cy); 3295 if (mHeightCanMeasure) { 3296 // move our visible rect according to scroll request 3297 if (cy != 0) { 3298 Rect tempRect = new Rect(); 3299 calcOurVisibleRect(tempRect); 3300 tempRect.offset(cx, cy); 3301 requestRectangleOnScreen(tempRect); 3302 } 3303 // FIXME: We scroll horizontally no matter what because currently 3304 // ScrollView and ListView will not scroll horizontally. 3305 // FIXME: Why do we only scroll horizontally if there is no 3306 // vertical scroll? 3307// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3308 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3309 } else { 3310 return pinScrollBy(cx, cy, animate, 0); 3311 } 3312 } 3313 3314 /** 3315 * Called by CallbackProxy when the page starts loading. 3316 * @param url The URL of the page which has started loading. 3317 */ 3318 /* package */ void onPageStarted(String url) { 3319 // every time we start a new page, we want to reset the 3320 // WebView certificate: if the new site is secure, we 3321 // will reload it and get a new certificate set; 3322 // if the new site is not secure, the certificate must be 3323 // null, and that will be the case 3324 setCertificate(null); 3325 3326 // reset the flag since we set to true in if need after 3327 // loading is see onPageFinished(Url) 3328 mAccessibilityScriptInjected = false; 3329 } 3330 3331 /** 3332 * Called by CallbackProxy when the page finishes loading. 3333 * @param url The URL of the page which has finished loading. 3334 */ 3335 /* package */ void onPageFinished(String url) { 3336 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3337 // If the user is now on a different page, or has scrolled the page 3338 // past the point where the title bar is offscreen, ignore the 3339 // scroll request. 3340 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3341 && mScrollX == 0 && mScrollY == 0) { 3342 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3343 SLIDE_TITLE_DURATION); 3344 } 3345 mPageThatNeedsToSlideTitleBarOffScreen = null; 3346 } 3347 mZoomManager.onPageFinished(url); 3348 injectAccessibilityForUrl(url); 3349 } 3350 3351 /** 3352 * This method injects accessibility in the loaded document if accessibility 3353 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3354 * If no URL specific script is found or JavaScript is disabled we fallback to 3355 * the default {@link AccessibilityInjector} implementation. 3356 * </p> 3357 * If the URL has the "axs" paramter set to 1 it has already done the 3358 * script injection so we do nothing. If the parameter is set to 0 3359 * the URL opts out accessibility script injection so we fall back to 3360 * the default {@link AccessibilityInjector}. 3361 * </p> 3362 * Note: If the user has not opted-in the accessibility script injection no scripts 3363 * are injected rather the default {@link AccessibilityInjector} implementation 3364 * is used. 3365 * 3366 * @param url The URL loaded by this {@link WebView}. 3367 */ 3368 private void injectAccessibilityForUrl(String url) { 3369 if (mWebViewCore == null) { 3370 return; 3371 } 3372 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3373 3374 if (!accessibilityManager.isEnabled()) { 3375 // it is possible that accessibility was turned off between reloads 3376 ensureAccessibilityScriptInjectorInstance(false); 3377 return; 3378 } 3379 3380 if (!getSettings().getJavaScriptEnabled()) { 3381 // no JS so we fallback to the basic buil-in support 3382 ensureAccessibilityScriptInjectorInstance(true); 3383 return; 3384 } 3385 3386 // check the URL "axs" parameter to choose appropriate action 3387 int axsParameterValue = getAxsUrlParameterValue(url); 3388 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3389 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3390 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3391 if (onDeviceScriptInjectionEnabled) { 3392 ensureAccessibilityScriptInjectorInstance(false); 3393 // neither script injected nor script injection opted out => we inject 3394 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3395 // TODO: Set this flag after successfull script injection. Maybe upon injection 3396 // the chooser should update the meta tag and we check it to declare success 3397 mAccessibilityScriptInjected = true; 3398 } else { 3399 // injection disabled so we fallback to the basic built-in support 3400 ensureAccessibilityScriptInjectorInstance(true); 3401 } 3402 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3403 // injection opted out so we fallback to the basic buil-in support 3404 ensureAccessibilityScriptInjectorInstance(true); 3405 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3406 ensureAccessibilityScriptInjectorInstance(false); 3407 // the URL provides accessibility but we still need to add our generic script 3408 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3409 } else { 3410 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3411 } 3412 } 3413 3414 /** 3415 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3416 * 3417 * @param present True to ensure an insance, false to ensure no instance. 3418 */ 3419 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3420 if (present) { 3421 if (mAccessibilityInjector == null) { 3422 mAccessibilityInjector = new AccessibilityInjector(this); 3423 } 3424 } else { 3425 mAccessibilityInjector = null; 3426 } 3427 } 3428 3429 /** 3430 * Gets the "axs" URL parameter value. 3431 * 3432 * @param url A url to fetch the paramter from. 3433 * @return The parameter value if such, -1 otherwise. 3434 */ 3435 private int getAxsUrlParameterValue(String url) { 3436 if (mMatchAxsUrlParameterPattern == null) { 3437 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3438 } 3439 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3440 if (matcher.find()) { 3441 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3442 return Integer.parseInt(keyValuePair.split("=")[1]); 3443 } 3444 return -1; 3445 } 3446 3447 /** 3448 * The URL of a page that sent a message to scroll the title bar off screen. 3449 * 3450 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3451 * title bar off the screen. Sometimes, the scroll position is set before 3452 * the page finishes loading. Rather than scrolling while the page is still 3453 * loading, keep track of the URL and new scroll position so we can perform 3454 * the scroll once the page finishes loading. 3455 */ 3456 private String mPageThatNeedsToSlideTitleBarOffScreen; 3457 3458 /** 3459 * The destination Y scroll position to be used when the page finishes 3460 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3461 */ 3462 private int mYDistanceToSlideTitleOffScreen; 3463 3464 // scale from content to view coordinates, and pin 3465 // return true if pin caused the final x/y different than the request cx/cy, 3466 // and a future scroll may reach the request cx/cy after our size has 3467 // changed 3468 // return false if the view scroll to the exact position as it is requested, 3469 // where negative numbers are taken to mean 0 3470 private boolean setContentScrollTo(int cx, int cy) { 3471 if (mDrawHistory) { 3472 // disallow WebView to change the scroll position as History Picture 3473 // is used in the view system. 3474 // One known case where this is called is that WebCore tries to 3475 // restore the scroll position. As history Picture already uses the 3476 // saved scroll position, it is ok to skip this. 3477 return false; 3478 } 3479 int vx; 3480 int vy; 3481 if ((cx | cy) == 0) { 3482 // If the page is being scrolled to (0,0), do not add in the title 3483 // bar's height, and simply scroll to (0,0). (The only other work 3484 // in contentToView_ is to multiply, so this would not change 0.) 3485 vx = 0; 3486 vy = 0; 3487 } else { 3488 vx = contentToViewX(cx); 3489 vy = contentToViewY(cy); 3490 } 3491// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3492// vx + " " + vy + "]"); 3493 // Some mobile sites attempt to scroll the title bar off the page by 3494 // scrolling to (0,1). If we are at the top left corner of the 3495 // page, assume this is an attempt to scroll off the title bar, and 3496 // animate the title bar off screen slowly enough that the user can see 3497 // it. 3498 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3499 && mTitleBar != null) { 3500 // FIXME: 100 should be defined somewhere as our max progress. 3501 if (getProgress() < 100) { 3502 // Wait to scroll the title bar off screen until the page has 3503 // finished loading. Keep track of the URL and the destination 3504 // Y position 3505 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3506 mYDistanceToSlideTitleOffScreen = vy; 3507 } else { 3508 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3509 } 3510 // Since we are animating, we have not yet reached the desired 3511 // scroll position. Do not return true to request another attempt 3512 return false; 3513 } 3514 pinScrollTo(vx, vy, false, 0); 3515 // If the request was to scroll to a negative coordinate, treat it as if 3516 // it was a request to scroll to 0 3517 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3518 return true; 3519 } else { 3520 return false; 3521 } 3522 } 3523 3524 // scale from content to view coordinates, and pin 3525 private void spawnContentScrollTo(int cx, int cy) { 3526 if (mDrawHistory) { 3527 // disallow WebView to change the scroll position as History Picture 3528 // is used in the view system. 3529 return; 3530 } 3531 int vx = contentToViewX(cx); 3532 int vy = contentToViewY(cy); 3533 pinScrollTo(vx, vy, true, 0); 3534 } 3535 3536 /** 3537 * These are from webkit, and are in content coordinate system (unzoomed) 3538 */ 3539 private void contentSizeChanged(boolean updateLayout) { 3540 // suppress 0,0 since we usually see real dimensions soon after 3541 // this avoids drawing the prev content in a funny place. If we find a 3542 // way to consolidate these notifications, this check may become 3543 // obsolete 3544 if ((mContentWidth | mContentHeight) == 0) { 3545 return; 3546 } 3547 3548 if (mHeightCanMeasure) { 3549 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3550 || updateLayout) { 3551 requestLayout(); 3552 } 3553 } else if (mWidthCanMeasure) { 3554 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3555 || updateLayout) { 3556 requestLayout(); 3557 } 3558 } else { 3559 // If we don't request a layout, try to send our view size to the 3560 // native side to ensure that WebCore has the correct dimensions. 3561 sendViewSizeZoom(false); 3562 } 3563 } 3564 3565 /** 3566 * Set the WebViewClient that will receive various notifications and 3567 * requests. This will replace the current handler. 3568 * @param client An implementation of WebViewClient. 3569 */ 3570 public void setWebViewClient(WebViewClient client) { 3571 mCallbackProxy.setWebViewClient(client); 3572 } 3573 3574 /** 3575 * Gets the WebViewClient 3576 * @return the current WebViewClient instance. 3577 * 3578 *@hide pending API council approval. 3579 */ 3580 public WebViewClient getWebViewClient() { 3581 return mCallbackProxy.getWebViewClient(); 3582 } 3583 3584 /** 3585 * Register the interface to be used when content can not be handled by 3586 * the rendering engine, and should be downloaded instead. This will replace 3587 * the current handler. 3588 * @param listener An implementation of DownloadListener. 3589 */ 3590 public void setDownloadListener(DownloadListener listener) { 3591 mCallbackProxy.setDownloadListener(listener); 3592 } 3593 3594 /** 3595 * Set the chrome handler. This is an implementation of WebChromeClient for 3596 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3597 * This will replace the current handler. 3598 * @param client An implementation of WebChromeClient. 3599 */ 3600 public void setWebChromeClient(WebChromeClient client) { 3601 mCallbackProxy.setWebChromeClient(client); 3602 } 3603 3604 /** 3605 * Gets the chrome handler. 3606 * @return the current WebChromeClient instance. 3607 * 3608 * @hide API council approval. 3609 */ 3610 public WebChromeClient getWebChromeClient() { 3611 return mCallbackProxy.getWebChromeClient(); 3612 } 3613 3614 /** 3615 * Set the back/forward list client. This is an implementation of 3616 * WebBackForwardListClient for handling new items and changes in the 3617 * history index. 3618 * @param client An implementation of WebBackForwardListClient. 3619 * {@hide} 3620 */ 3621 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3622 mCallbackProxy.setWebBackForwardListClient(client); 3623 } 3624 3625 /** 3626 * Gets the WebBackForwardListClient. 3627 * {@hide} 3628 */ 3629 public WebBackForwardListClient getWebBackForwardListClient() { 3630 return mCallbackProxy.getWebBackForwardListClient(); 3631 } 3632 3633 /** 3634 * Set the Picture listener. This is an interface used to receive 3635 * notifications of a new Picture. 3636 * @param listener An implementation of WebView.PictureListener. 3637 * @deprecated This method is now obsolete. 3638 */ 3639 @Deprecated 3640 public void setPictureListener(PictureListener listener) { 3641 mPictureListener = listener; 3642 } 3643 3644 /** 3645 * {@hide} 3646 */ 3647 /* FIXME: Debug only! Remove for SDK! */ 3648 public void externalRepresentation(Message callback) { 3649 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3650 } 3651 3652 /** 3653 * {@hide} 3654 */ 3655 /* FIXME: Debug only! Remove for SDK! */ 3656 public void documentAsText(Message callback) { 3657 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3658 } 3659 3660 /** 3661 * Use this function to bind an object to JavaScript so that the 3662 * methods can be accessed from JavaScript. 3663 * <p><strong>IMPORTANT:</strong> 3664 * <ul> 3665 * <li> Using addJavascriptInterface() allows JavaScript to control your 3666 * application. This can be a very useful feature or a dangerous security 3667 * issue. When the HTML in the WebView is untrustworthy (for example, part 3668 * or all of the HTML is provided by some person or process), then an 3669 * attacker could inject HTML that will execute your code and possibly any 3670 * code of the attacker's choosing.<br> 3671 * Do not use addJavascriptInterface() unless all of the HTML in this 3672 * WebView was written by you.</li> 3673 * <li> The Java object that is bound runs in another thread and not in 3674 * the thread that it was constructed in.</li> 3675 * </ul></p> 3676 * @param obj The class instance to bind to JavaScript, null instances are 3677 * ignored. 3678 * @param interfaceName The name to used to expose the instance in 3679 * JavaScript. 3680 */ 3681 public void addJavascriptInterface(Object obj, String interfaceName) { 3682 if (obj == null) { 3683 return; 3684 } 3685 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3686 arg.mObject = obj; 3687 arg.mInterfaceName = interfaceName; 3688 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3689 } 3690 3691 /** 3692 * Removes a previously added JavaScript interface with the given name. 3693 * @param interfaceName The name of the interface to remove. 3694 */ 3695 public void removeJavascriptInterface(String interfaceName) { 3696 if (mWebViewCore != null) { 3697 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3698 arg.mInterfaceName = interfaceName; 3699 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 3700 } 3701 } 3702 3703 /** 3704 * Return the WebSettings object used to control the settings for this 3705 * WebView. 3706 * @return A WebSettings object that can be used to control this WebView's 3707 * settings. 3708 */ 3709 public WebSettings getSettings() { 3710 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3711 } 3712 3713 /** 3714 * Return the list of currently loaded plugins. 3715 * @return The list of currently loaded plugins. 3716 * 3717 * @hide 3718 * @deprecated This was used for Gears, which has been deprecated. 3719 */ 3720 @Deprecated 3721 public static synchronized PluginList getPluginList() { 3722 return new PluginList(); 3723 } 3724 3725 /** 3726 * @hide 3727 * @deprecated This was used for Gears, which has been deprecated. 3728 */ 3729 @Deprecated 3730 public void refreshPlugins(boolean reloadOpenPages) { } 3731 3732 //------------------------------------------------------------------------- 3733 // Override View methods 3734 //------------------------------------------------------------------------- 3735 3736 @Override 3737 protected void finalize() throws Throwable { 3738 try { 3739 destroy(); 3740 } finally { 3741 super.finalize(); 3742 } 3743 } 3744 3745 @Override 3746 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3747 if (child == mTitleBar) { 3748 // When drawing the title bar, move it horizontally to always show 3749 // at the top of the WebView. 3750 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3751 int newTop = 0; 3752 if (mTitleGravity == Gravity.NO_GRAVITY) { 3753 newTop = Math.min(0, mScrollY); 3754 } else if (mTitleGravity == Gravity.TOP) { 3755 newTop = mScrollY; 3756 } 3757 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 3758 mTitleBar.setTop(newTop); 3759 } 3760 return super.drawChild(canvas, child, drawingTime); 3761 } 3762 3763 private void drawContent(Canvas canvas) { 3764 // Update the buttons in the picture, so when we draw the picture 3765 // to the screen, they are in the correct state. 3766 // Tell the native side if user is a) touching the screen, 3767 // b) pressing the trackball down, or c) pressing the enter key 3768 // If the cursor is on a button, we need to draw it in the pressed 3769 // state. 3770 // If mNativeClass is 0, we should not reach here, so we do not 3771 // need to check it again. 3772 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3773 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3774 || mTrackballDown || mGotCenterDown, false); 3775 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3776 } 3777 3778 /** 3779 * Draw the background when beyond bounds 3780 * @param canvas Canvas to draw into 3781 */ 3782 private void drawOverScrollBackground(Canvas canvas) { 3783 if (mOverScrollBackground == null) { 3784 mOverScrollBackground = new Paint(); 3785 Bitmap bm = BitmapFactory.decodeResource( 3786 mContext.getResources(), 3787 com.android.internal.R.drawable.status_bar_background); 3788 mOverScrollBackground.setShader(new BitmapShader(bm, 3789 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3790 mOverScrollBorder = new Paint(); 3791 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3792 mOverScrollBorder.setStrokeWidth(0); 3793 mOverScrollBorder.setColor(0xffbbbbbb); 3794 } 3795 3796 int top = 0; 3797 int right = computeRealHorizontalScrollRange(); 3798 int bottom = top + computeRealVerticalScrollRange(); 3799 // first draw the background and anchor to the top of the view 3800 canvas.save(); 3801 canvas.translate(mScrollX, mScrollY); 3802 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3803 - mScrollY, Region.Op.DIFFERENCE); 3804 canvas.drawPaint(mOverScrollBackground); 3805 canvas.restore(); 3806 // then draw the border 3807 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3808 // next clip the region for the content 3809 canvas.clipRect(0, top, right, bottom); 3810 } 3811 3812 @Override 3813 protected void onDraw(Canvas canvas) { 3814 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3815 if (mNativeClass == 0) { 3816 return; 3817 } 3818 3819 // if both mContentWidth and mContentHeight are 0, it means there is no 3820 // valid Picture passed to WebView yet. This can happen when WebView 3821 // just starts. Draw the background and return. 3822 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3823 canvas.drawColor(mBackgroundColor); 3824 return; 3825 } 3826 3827 if (canvas.isHardwareAccelerated()) { 3828 mZoomManager.setHardwareAccelerated(); 3829 } 3830 3831 int saveCount = canvas.save(); 3832 if (mInOverScrollMode && !getSettings() 3833 .getUseWebViewBackgroundForOverscrollBackground()) { 3834 drawOverScrollBackground(canvas); 3835 } 3836 if (mTitleBar != null) { 3837 canvas.translate(0, getTitleHeight()); 3838 } 3839 drawContent(canvas); 3840 canvas.restoreToCount(saveCount); 3841 3842 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3843 invalidate(); 3844 } 3845 if (inEditingMode()) { 3846 mWebTextView.onDrawSubstitute(); 3847 } 3848 mWebViewCore.signalRepaintDone(); 3849 3850 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 3851 invalidate(); 3852 } 3853 3854 // paint the highlight in the end 3855 if (!mTouchHighlightRegion.isEmpty()) { 3856 if (mTouchHightlightPaint == null) { 3857 mTouchHightlightPaint = new Paint(); 3858 mTouchHightlightPaint.setColor(mHightlightColor); 3859 mTouchHightlightPaint.setAntiAlias(true); 3860 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3861 TOUCH_HIGHLIGHT_ARC)); 3862 } 3863 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3864 mTouchHightlightPaint); 3865 } 3866 if (DEBUG_TOUCH_HIGHLIGHT) { 3867 if (getSettings().getNavDump()) { 3868 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3869 if (mTouchCrossHairColor == null) { 3870 mTouchCrossHairColor = new Paint(); 3871 mTouchCrossHairColor.setColor(Color.RED); 3872 } 3873 canvas.drawLine(mTouchHighlightX - mNavSlop, 3874 mTouchHighlightY - mNavSlop, mTouchHighlightX 3875 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3876 + 1, mTouchCrossHairColor); 3877 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3878 mTouchHighlightY - mNavSlop, mTouchHighlightX 3879 - mNavSlop, 3880 mTouchHighlightY + mNavSlop + 1, 3881 mTouchCrossHairColor); 3882 } 3883 } 3884 } 3885 } 3886 3887 private void removeTouchHighlight(boolean removePendingMessage) { 3888 if (removePendingMessage) { 3889 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3890 } 3891 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3892 } 3893 3894 @Override 3895 public void setLayoutParams(ViewGroup.LayoutParams params) { 3896 if (params.height == LayoutParams.WRAP_CONTENT) { 3897 mWrapContent = true; 3898 } 3899 super.setLayoutParams(params); 3900 } 3901 3902 @Override 3903 public boolean performLongClick() { 3904 // performLongClick() is the result of a delayed message. If we switch 3905 // to windows overview, the WebView will be temporarily removed from the 3906 // view system. In that case, do nothing. 3907 if (getParent() == null) return false; 3908 3909 // A multi-finger gesture can look like a long press; make sure we don't take 3910 // long press actions if we're scaling. 3911 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 3912 if (detector != null && detector.isInProgress()) { 3913 return false; 3914 } 3915 3916 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3917 // Send the click so that the textfield is in focus 3918 centerKeyPressOnTextField(); 3919 rebuildWebTextView(); 3920 } else { 3921 clearTextEntry(); 3922 } 3923 if (inEditingMode()) { 3924 // Since we just called rebuildWebTextView, the layout is not set 3925 // properly. Update it so it can correctly find the word to select. 3926 mWebTextView.ensureLayout(); 3927 // Provide a touch down event to WebTextView, which will allow it 3928 // to store the location to use in performLongClick. 3929 AbsoluteLayout.LayoutParams params 3930 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 3931 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 3932 mLastTouchTime, MotionEvent.ACTION_DOWN, 3933 mLastTouchX - params.x + mScrollX, 3934 mLastTouchY - params.y + mScrollY, 0); 3935 mWebTextView.dispatchTouchEvent(fake); 3936 return mWebTextView.performLongClick(); 3937 } 3938 if (mSelectingText) return false; // long click does nothing on selection 3939 /* if long click brings up a context menu, the super function 3940 * returns true and we're done. Otherwise, nothing happened when 3941 * the user clicked. */ 3942 if (super.performLongClick()) { 3943 return true; 3944 } 3945 /* In the case where the application hasn't already handled the long 3946 * click action, look for a word under the click. If one is found, 3947 * animate the text selection into view. 3948 * FIXME: no animation code yet */ 3949 return selectText(); 3950 } 3951 3952 /** 3953 * Select the word at the last click point. 3954 * 3955 * @hide pending API council approval 3956 */ 3957 public boolean selectText() { 3958 int x = viewToContentX(mLastTouchX + mScrollX); 3959 int y = viewToContentY(mLastTouchY + mScrollY); 3960 return selectText(x, y); 3961 } 3962 3963 /** 3964 * Select the word at the indicated content coordinates. 3965 */ 3966 boolean selectText(int x, int y) { 3967 if (!setUpSelect(true, x, y)) { 3968 return false; 3969 } 3970 nativeSetExtendSelection(); 3971 mDrawSelectionPointer = false; 3972 mSelectionStarted = true; 3973 mTouchMode = TOUCH_DRAG_MODE; 3974 return true; 3975 } 3976 3977 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 3978 3979 @Override 3980 protected void onConfigurationChanged(Configuration newConfig) { 3981 if (mSelectingText && mOrientation != newConfig.orientation) { 3982 selectionDone(); 3983 } 3984 mOrientation = newConfig.orientation; 3985 } 3986 3987 /** 3988 * Keep track of the Callback so we can end its ActionMode or remove its 3989 * titlebar. 3990 */ 3991 private SelectActionModeCallback mSelectCallback; 3992 3993 // These values are possible options for didUpdateWebTextViewDimensions. 3994 private static final int FULLY_ON_SCREEN = 0; 3995 private static final int INTERSECTS_SCREEN = 1; 3996 private static final int ANYWHERE = 2; 3997 3998 /** 3999 * Check to see if the focused textfield/textarea is still on screen. If it 4000 * is, update the the dimensions and location of WebTextView. Otherwise, 4001 * remove the WebTextView. Should be called when the zoom level changes. 4002 * @param intersection How to determine whether the textfield/textarea is 4003 * still on screen. 4004 * @return boolean True if the textfield/textarea is still on screen and the 4005 * dimensions/location of WebTextView have been updated. 4006 */ 4007 private boolean didUpdateWebTextViewDimensions(int intersection) { 4008 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4009 Rect vBox = contentToViewRect(contentBounds); 4010 Rect visibleRect = new Rect(); 4011 calcOurVisibleRect(visibleRect); 4012 // If the textfield is on screen, place the WebTextView in 4013 // its new place, accounting for our new scroll/zoom values, 4014 // and adjust its textsize. 4015 boolean onScreen; 4016 switch (intersection) { 4017 case FULLY_ON_SCREEN: 4018 onScreen = visibleRect.contains(vBox); 4019 break; 4020 case INTERSECTS_SCREEN: 4021 onScreen = Rect.intersects(visibleRect, vBox); 4022 break; 4023 case ANYWHERE: 4024 onScreen = true; 4025 break; 4026 default: 4027 throw new AssertionError( 4028 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4029 } 4030 if (onScreen) { 4031 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4032 vBox.height()); 4033 mWebTextView.updateTextSize(); 4034 updateWebTextViewPadding(); 4035 return true; 4036 } else { 4037 // The textfield is now off screen. The user probably 4038 // was not zooming to see the textfield better. Remove 4039 // the WebTextView. If the user types a key, and the 4040 // textfield is still in focus, we will reconstruct 4041 // the WebTextView and scroll it back on screen. 4042 mWebTextView.remove(); 4043 return false; 4044 } 4045 } 4046 4047 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4048 boolean isPictureAfterFirstLayout) { 4049 if (mNativeClass == 0) 4050 return; 4051 nativeSetBaseLayer(layer, invalRegion, showVisualIndicator, 4052 isPictureAfterFirstLayout); 4053 if (mHTML5VideoViewProxy != null) { 4054 mHTML5VideoViewProxy.setBaseLayer(layer); 4055 } 4056 } 4057 4058 private void onZoomAnimationStart() { 4059 // If it is in password mode, turn it off so it does not draw misplaced. 4060 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4061 mWebTextView.setInPassword(false); 4062 } 4063 } 4064 4065 private void onZoomAnimationEnd() { 4066 // adjust the edit text view if needed 4067 if (inEditingMode() && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN) 4068 && nativeFocusCandidateIsPassword()) { 4069 // If it is a password field, start drawing the WebTextView once 4070 // again. 4071 mWebTextView.setInPassword(true); 4072 } 4073 } 4074 4075 void onFixedLengthZoomAnimationStart() { 4076 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4077 onZoomAnimationStart(); 4078 } 4079 4080 void onFixedLengthZoomAnimationEnd() { 4081 if (!mSelectingText) { 4082 WebViewCore.resumeUpdatePicture(mWebViewCore); 4083 } 4084 onZoomAnimationEnd(); 4085 } 4086 4087 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4088 Paint.DITHER_FLAG | 4089 Paint.SUBPIXEL_TEXT_FLAG; 4090 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4091 Paint.DITHER_FLAG; 4092 4093 private final DrawFilter mZoomFilter = 4094 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4095 // If we need to trade better quality for speed, set mScrollFilter to null 4096 private final DrawFilter mScrollFilter = 4097 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4098 4099 private void drawCoreAndCursorRing(Canvas canvas, int color, 4100 boolean drawCursorRing) { 4101 if (mDrawHistory) { 4102 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4103 canvas.drawPicture(mHistoryPicture); 4104 return; 4105 } 4106 if (mNativeClass == 0) return; 4107 4108 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4109 boolean animateScroll = ((!mScroller.isFinished() 4110 || mVelocityTracker != null) 4111 && (mTouchMode != TOUCH_DRAG_MODE || 4112 mHeldMotionless != MOTIONLESS_TRUE)) 4113 || mDeferTouchMode == TOUCH_DRAG_MODE; 4114 if (mTouchMode == TOUCH_DRAG_MODE) { 4115 if (mHeldMotionless == MOTIONLESS_PENDING) { 4116 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4117 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4118 mHeldMotionless = MOTIONLESS_FALSE; 4119 } 4120 if (mHeldMotionless == MOTIONLESS_FALSE) { 4121 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4122 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4123 mHeldMotionless = MOTIONLESS_PENDING; 4124 } 4125 } 4126 if (animateZoom) { 4127 mZoomManager.animateZoom(canvas); 4128 } else if (!canvas.isHardwareAccelerated()) { 4129 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4130 } 4131 4132 boolean UIAnimationsRunning = false; 4133 // Currently for each draw we compute the animation values; 4134 // We may in the future decide to do that independently. 4135 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 4136 UIAnimationsRunning = true; 4137 // If we have unfinished (or unstarted) animations, 4138 // we ask for a repaint. We only need to do this in software 4139 // rendering (with hardware rendering we already have a different 4140 // method of requesting a repaint) 4141 if (!canvas.isHardwareAccelerated()) 4142 invalidate(); 4143 } 4144 4145 // decide which adornments to draw 4146 int extras = DRAW_EXTRAS_NONE; 4147 if (mFindIsUp) { 4148 extras = DRAW_EXTRAS_FIND; 4149 } else if (mSelectingText) { 4150 extras = DRAW_EXTRAS_SELECTION; 4151 nativeSetSelectionPointer(mDrawSelectionPointer, 4152 mZoomManager.getInvScale(), 4153 mSelectX, mSelectY - getTitleHeight()); 4154 } else if (drawCursorRing) { 4155 extras = DRAW_EXTRAS_CURSOR_RING; 4156 } 4157 if (DebugFlags.WEB_VIEW) { 4158 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4159 + " mSelectingText=" + mSelectingText 4160 + " nativePageShouldHandleShiftAndArrows()=" 4161 + nativePageShouldHandleShiftAndArrows() 4162 + " animateZoom=" + animateZoom 4163 + " extras=" + extras); 4164 } 4165 4166 if (canvas.isHardwareAccelerated()) { 4167 int functor = nativeGetDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 4168 mGLViewportEmpty ? null : mViewRectViewport, getScale(), extras); 4169 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4170 } else { 4171 DrawFilter df = null; 4172 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4173 df = mZoomFilter; 4174 } else if (animateScroll) { 4175 df = mScrollFilter; 4176 } 4177 canvas.setDrawFilter(df); 4178 // XXX: Revisit splitting content. Right now it causes a 4179 // synchronization problem with layers. 4180 int content = nativeDraw(canvas, color, extras, false); 4181 canvas.setDrawFilter(null); 4182 if (content != 0) { 4183 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4184 } 4185 } 4186 4187 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4188 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4189 mTouchMode = TOUCH_SHORTPRESS_MODE; 4190 } 4191 } 4192 if (mFocusSizeChanged) { 4193 mFocusSizeChanged = false; 4194 // If we are zooming, this will get handled above, when the zoom 4195 // finishes. We also do not need to do this unless the WebTextView 4196 // is showing. 4197 if (!animateZoom && inEditingMode()) { 4198 didUpdateWebTextViewDimensions(ANYWHERE); 4199 } 4200 } 4201 } 4202 4203 // draw history 4204 private boolean mDrawHistory = false; 4205 private Picture mHistoryPicture = null; 4206 private int mHistoryWidth = 0; 4207 private int mHistoryHeight = 0; 4208 4209 // Only check the flag, can be called from WebCore thread 4210 boolean drawHistory() { 4211 return mDrawHistory; 4212 } 4213 4214 int getHistoryPictureWidth() { 4215 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4216 } 4217 4218 // Should only be called in UI thread 4219 void switchOutDrawHistory() { 4220 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4221 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4222 mDrawHistory = false; 4223 mHistoryPicture = null; 4224 invalidate(); 4225 int oldScrollX = mScrollX; 4226 int oldScrollY = mScrollY; 4227 mScrollX = pinLocX(mScrollX); 4228 mScrollY = pinLocY(mScrollY); 4229 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4230 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4231 } else { 4232 sendOurVisibleRect(); 4233 } 4234 } 4235 } 4236 4237 WebViewCore.CursorData cursorData() { 4238 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4239 result.mMoveGeneration = nativeMoveGeneration(); 4240 result.mFrame = nativeCursorFramePointer(); 4241 Point position = nativeCursorPosition(); 4242 result.mX = position.x; 4243 result.mY = position.y; 4244 return result; 4245 } 4246 4247 /** 4248 * Delete text from start to end in the focused textfield. If there is no 4249 * focus, or if start == end, silently fail. If start and end are out of 4250 * order, swap them. 4251 * @param start Beginning of selection to delete. 4252 * @param end End of selection to delete. 4253 */ 4254 /* package */ void deleteSelection(int start, int end) { 4255 mTextGeneration++; 4256 WebViewCore.TextSelectionData data 4257 = new WebViewCore.TextSelectionData(start, end); 4258 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4259 data); 4260 } 4261 4262 /** 4263 * Set the selection to (start, end) in the focused textfield. If start and 4264 * end are out of order, swap them. 4265 * @param start Beginning of selection. 4266 * @param end End of selection. 4267 */ 4268 /* package */ void setSelection(int start, int end) { 4269 if (mWebViewCore != null) { 4270 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4271 } 4272 } 4273 4274 @Override 4275 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4276 InputConnection connection = super.onCreateInputConnection(outAttrs); 4277 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4278 return connection; 4279 } 4280 4281 /** 4282 * Called in response to a message from webkit telling us that the soft 4283 * keyboard should be launched. 4284 */ 4285 private void displaySoftKeyboard(boolean isTextView) { 4286 InputMethodManager imm = (InputMethodManager) 4287 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4288 4289 // bring it back to the default level scale so that user can enter text 4290 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4291 if (zoom) { 4292 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4293 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4294 } 4295 if (isTextView) { 4296 rebuildWebTextView(); 4297 if (inEditingMode()) { 4298 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 4299 if (zoom) { 4300 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4301 } 4302 return; 4303 } 4304 } 4305 // Used by plugins and contentEditable. 4306 // Also used if the navigation cache is out of date, and 4307 // does not recognize that a textfield is in focus. In that 4308 // case, use WebView as the targeted view. 4309 // see http://b/issue?id=2457459 4310 imm.showSoftInput(this, 0); 4311 } 4312 4313 // Called by WebKit to instruct the UI to hide the keyboard 4314 private void hideSoftKeyboard() { 4315 InputMethodManager imm = InputMethodManager.peekInstance(); 4316 if (imm != null && (imm.isActive(this) 4317 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4318 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4319 } 4320 } 4321 4322 /* 4323 * This method checks the current focus and cursor and potentially rebuilds 4324 * mWebTextView to have the appropriate properties, such as password, 4325 * multiline, and what text it contains. It also removes it if necessary. 4326 */ 4327 /* package */ void rebuildWebTextView() { 4328 // If the WebView does not have focus, do nothing until it gains focus. 4329 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4330 return; 4331 } 4332 boolean alreadyThere = inEditingMode(); 4333 // inEditingMode can only return true if mWebTextView is non-null, 4334 // so we can safely call remove() if (alreadyThere) 4335 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4336 if (alreadyThere) { 4337 mWebTextView.remove(); 4338 } 4339 return; 4340 } 4341 // At this point, we know we have found an input field, so go ahead 4342 // and create the WebTextView if necessary. 4343 if (mWebTextView == null) { 4344 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4345 // Initialize our generation number. 4346 mTextGeneration = 0; 4347 } 4348 mWebTextView.updateTextSize(); 4349 Rect visibleRect = new Rect(); 4350 calcOurContentVisibleRect(visibleRect); 4351 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4352 // should be in content coordinates. 4353 Rect bounds = nativeFocusCandidateNodeBounds(); 4354 Rect vBox = contentToViewRect(bounds); 4355 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4356 if (!Rect.intersects(bounds, visibleRect)) { 4357 revealSelection(); 4358 } 4359 String text = nativeFocusCandidateText(); 4360 int nodePointer = nativeFocusCandidatePointer(); 4361 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 4362 // It is possible that we have the same textfield, but it has moved, 4363 // i.e. In the case of opening/closing the screen. 4364 // In that case, we need to set the dimensions, but not the other 4365 // aspects. 4366 // If the text has been changed by webkit, update it. However, if 4367 // there has been more UI text input, ignore it. We will receive 4368 // another update when that text is recognized. 4369 if (text != null && !text.equals(mWebTextView.getText().toString()) 4370 && nativeTextGeneration() == mTextGeneration) { 4371 mWebTextView.setTextAndKeepSelection(text); 4372 } 4373 } else { 4374 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 4375 Gravity.RIGHT : Gravity.NO_GRAVITY); 4376 // This needs to be called before setType, which may call 4377 // requestFormData, and it needs to have the correct nodePointer. 4378 mWebTextView.setNodePointer(nodePointer); 4379 mWebTextView.setType(nativeFocusCandidateType()); 4380 updateWebTextViewPadding(); 4381 if (null == text) { 4382 if (DebugFlags.WEB_VIEW) { 4383 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4384 } 4385 text = ""; 4386 } 4387 mWebTextView.setTextAndKeepSelection(text); 4388 InputMethodManager imm = InputMethodManager.peekInstance(); 4389 if (imm != null && imm.isActive(mWebTextView)) { 4390 imm.restartInput(mWebTextView); 4391 } 4392 } 4393 if (isFocused()) { 4394 mWebTextView.requestFocus(); 4395 } 4396 } 4397 4398 /** 4399 * Update the padding of mWebTextView based on the native textfield/textarea 4400 */ 4401 void updateWebTextViewPadding() { 4402 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4403 if (paddingRect != null) { 4404 // Use contentToViewDimension since these are the dimensions of 4405 // the padding. 4406 mWebTextView.setPadding( 4407 contentToViewDimension(paddingRect.left), 4408 contentToViewDimension(paddingRect.top), 4409 contentToViewDimension(paddingRect.right), 4410 contentToViewDimension(paddingRect.bottom)); 4411 } 4412 } 4413 4414 /** 4415 * Tell webkit to put the cursor on screen. 4416 */ 4417 /* package */ void revealSelection() { 4418 if (mWebViewCore != null) { 4419 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4420 } 4421 } 4422 4423 /** 4424 * Called by WebTextView to find saved form data associated with the 4425 * textfield 4426 * @param name Name of the textfield. 4427 * @param nodePointer Pointer to the node of the textfield, so it can be 4428 * compared to the currently focused textfield when the data is 4429 * retrieved. 4430 * @param autoFillable true if WebKit has determined this field is part of 4431 * a form that can be auto filled. 4432 * @param autoComplete true if the attribute "autocomplete" is set to true 4433 * on the textfield. 4434 */ 4435 /* package */ void requestFormData(String name, int nodePointer, 4436 boolean autoFillable, boolean autoComplete) { 4437 if (mWebViewCore.getSettings().getSaveFormData()) { 4438 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4439 update.arg1 = nodePointer; 4440 RequestFormData updater = new RequestFormData(name, getUrl(), 4441 update, autoFillable, autoComplete); 4442 Thread t = new Thread(updater); 4443 t.start(); 4444 } 4445 } 4446 4447 /** 4448 * Pass a message to find out the <label> associated with the <input> 4449 * identified by nodePointer 4450 * @param framePointer Pointer to the frame containing the <input> node 4451 * @param nodePointer Pointer to the node for which a <label> is desired. 4452 */ 4453 /* package */ void requestLabel(int framePointer, int nodePointer) { 4454 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4455 nodePointer); 4456 } 4457 4458 /* 4459 * This class requests an Adapter for the WebTextView which shows past 4460 * entries stored in the database. It is a Runnable so that it can be done 4461 * in its own thread, without slowing down the UI. 4462 */ 4463 private class RequestFormData implements Runnable { 4464 private String mName; 4465 private String mUrl; 4466 private Message mUpdateMessage; 4467 private boolean mAutoFillable; 4468 private boolean mAutoComplete; 4469 4470 public RequestFormData(String name, String url, Message msg, 4471 boolean autoFillable, boolean autoComplete) { 4472 mName = name; 4473 mUrl = url; 4474 mUpdateMessage = msg; 4475 mAutoFillable = autoFillable; 4476 mAutoComplete = autoComplete; 4477 } 4478 4479 public void run() { 4480 ArrayList<String> pastEntries = new ArrayList<String>(); 4481 4482 if (mAutoFillable) { 4483 // Note that code inside the adapter click handler in WebTextView depends 4484 // on the AutoFill item being at the top of the drop down list. If you change 4485 // the order, make sure to do it there too! 4486 WebSettings settings = getSettings(); 4487 if (settings != null && settings.getAutoFillProfile() != null) { 4488 pastEntries.add(getResources().getText( 4489 com.android.internal.R.string.autofill_this_form).toString() + 4490 " " + 4491 mAutoFillData.getPreviewString()); 4492 mWebTextView.setAutoFillProfileIsSet(true); 4493 } else { 4494 // There is no autofill profile set up yet, so add an option that 4495 // will invite the user to set their profile up. 4496 pastEntries.add(getResources().getText( 4497 com.android.internal.R.string.setup_autofill).toString()); 4498 mWebTextView.setAutoFillProfileIsSet(false); 4499 } 4500 } 4501 4502 if (mAutoComplete) { 4503 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4504 } 4505 4506 if (pastEntries.size() > 0) { 4507 AutoCompleteAdapter adapter = new 4508 AutoCompleteAdapter(mContext, pastEntries); 4509 mUpdateMessage.obj = adapter; 4510 mUpdateMessage.sendToTarget(); 4511 } 4512 } 4513 } 4514 4515 /** 4516 * Dump the display tree to "/sdcard/displayTree.txt" 4517 * 4518 * @hide debug only 4519 */ 4520 public void dumpDisplayTree() { 4521 nativeDumpDisplayTree(getUrl()); 4522 } 4523 4524 /** 4525 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4526 * "/sdcard/domTree.txt" 4527 * 4528 * @hide debug only 4529 */ 4530 public void dumpDomTree(boolean toFile) { 4531 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4532 } 4533 4534 /** 4535 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4536 * to "/sdcard/renderTree.txt" 4537 * 4538 * @hide debug only 4539 */ 4540 public void dumpRenderTree(boolean toFile) { 4541 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4542 } 4543 4544 /** 4545 * Called by DRT on UI thread, need to proxy to WebCore thread. 4546 * 4547 * @hide debug only 4548 */ 4549 public void useMockDeviceOrientation() { 4550 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4551 } 4552 4553 /** 4554 * Called by DRT on WebCore thread. 4555 * 4556 * @hide debug only 4557 */ 4558 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4559 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4560 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4561 canProvideGamma, gamma); 4562 } 4563 4564 /** 4565 * Dump the V8 counters to standard output. 4566 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4567 * true. Otherwise, this will do nothing. 4568 * 4569 * @hide debug only 4570 */ 4571 public void dumpV8Counters() { 4572 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4573 } 4574 4575 // This is used to determine long press with the center key. Does not 4576 // affect long press with the trackball/touch. 4577 private boolean mGotCenterDown = false; 4578 4579 @Override 4580 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4581 // send complex characters to webkit for use by JS and plugins 4582 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4583 // pass the key to DOM 4584 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4585 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4586 // return true as DOM handles the key 4587 return true; 4588 } 4589 return false; 4590 } 4591 4592 private boolean isEnterActionKey(int keyCode) { 4593 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 4594 || keyCode == KeyEvent.KEYCODE_ENTER 4595 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 4596 } 4597 4598 @Override 4599 public boolean onKeyDown(int keyCode, KeyEvent event) { 4600 if (DebugFlags.WEB_VIEW) { 4601 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4602 + "keyCode=" + keyCode 4603 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4604 } 4605 4606 // don't implement accelerator keys here; defer to host application 4607 if (event.isCtrlPressed()) { 4608 return false; 4609 } 4610 4611 if (mNativeClass == 0) { 4612 return false; 4613 } 4614 4615 // do this hack up front, so it always works, regardless of touch-mode 4616 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4617 mAutoRedraw = !mAutoRedraw; 4618 if (mAutoRedraw) { 4619 invalidate(); 4620 } 4621 return true; 4622 } 4623 4624 // Bubble up the key event if 4625 // 1. it is a system key; or 4626 // 2. the host application wants to handle it; 4627 if (event.isSystem() 4628 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4629 return false; 4630 } 4631 4632 // accessibility support 4633 if (accessibilityScriptInjected()) { 4634 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4635 // if an accessibility script is injected we delegate to it the key handling. 4636 // this script is a screen reader which is a fully fledged solution for blind 4637 // users to navigate in and interact with web pages. 4638 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4639 return true; 4640 } else { 4641 // Clean up if accessibility was disabled after loading the current URL. 4642 mAccessibilityScriptInjected = false; 4643 } 4644 } else if (mAccessibilityInjector != null) { 4645 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4646 if (mAccessibilityInjector.onKeyEvent(event)) { 4647 // if an accessibility injector is present (no JavaScript enabled or the site 4648 // opts out injecting our JavaScript screen reader) we let it decide whether 4649 // to act on and consume the event. 4650 return true; 4651 } 4652 } else { 4653 // Clean up if accessibility was disabled after loading the current URL. 4654 mAccessibilityInjector = null; 4655 } 4656 } 4657 4658 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4659 if (event.hasNoModifiers()) { 4660 pageUp(false); 4661 return true; 4662 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4663 pageUp(true); 4664 return true; 4665 } 4666 } 4667 4668 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4669 if (event.hasNoModifiers()) { 4670 pageDown(false); 4671 return true; 4672 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4673 pageDown(true); 4674 return true; 4675 } 4676 } 4677 4678 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 4679 pageUp(true); 4680 return true; 4681 } 4682 4683 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 4684 pageDown(true); 4685 return true; 4686 } 4687 4688 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4689 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4690 switchOutDrawHistory(); 4691 if (nativePageShouldHandleShiftAndArrows()) { 4692 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 4693 return true; 4694 } 4695 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4696 switch (keyCode) { 4697 case KeyEvent.KEYCODE_DPAD_UP: 4698 pageUp(true); 4699 return true; 4700 case KeyEvent.KEYCODE_DPAD_DOWN: 4701 pageDown(true); 4702 return true; 4703 case KeyEvent.KEYCODE_DPAD_LEFT: 4704 nativeClearCursor(); // start next trackball movement from page edge 4705 return pinScrollTo(0, mScrollY, true, 0); 4706 case KeyEvent.KEYCODE_DPAD_RIGHT: 4707 nativeClearCursor(); // start next trackball movement from page edge 4708 return pinScrollTo(mContentWidth, mScrollY, true, 0); 4709 } 4710 } 4711 if (mSelectingText) { 4712 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4713 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4714 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4715 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4716 int multiplier = event.getRepeatCount() + 1; 4717 moveSelection(xRate * multiplier, yRate * multiplier); 4718 return true; 4719 } 4720 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4721 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4722 return true; 4723 } 4724 // Bubble up the key event as WebView doesn't handle it 4725 return false; 4726 } 4727 4728 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4729 switchOutDrawHistory(); 4730 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 4731 || nativeCursorWantsKeyEvents(); 4732 if (event.getRepeatCount() == 0) { 4733 if (mSelectingText) { 4734 return true; // discard press if copy in progress 4735 } 4736 mGotCenterDown = true; 4737 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4738 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4739 // Already checked mNativeClass, so we do not need to check it 4740 // again. 4741 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4742 if (!wantsKeyEvents) return true; 4743 } 4744 // Bubble up the key event as WebView doesn't handle it 4745 if (!wantsKeyEvents) return false; 4746 } 4747 4748 if (getSettings().getNavDump()) { 4749 switch (keyCode) { 4750 case KeyEvent.KEYCODE_4: 4751 dumpDisplayTree(); 4752 break; 4753 case KeyEvent.KEYCODE_5: 4754 case KeyEvent.KEYCODE_6: 4755 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4756 break; 4757 case KeyEvent.KEYCODE_7: 4758 case KeyEvent.KEYCODE_8: 4759 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4760 break; 4761 case KeyEvent.KEYCODE_9: 4762 nativeInstrumentReport(); 4763 return true; 4764 } 4765 } 4766 4767 if (nativeCursorIsTextInput()) { 4768 // This message will put the node in focus, for the DOM's notion 4769 // of focus. 4770 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 4771 nativeCursorNodePointer()); 4772 // This will bring up the WebTextView and put it in focus, for 4773 // our view system's notion of focus 4774 rebuildWebTextView(); 4775 // Now we need to pass the event to it 4776 if (inEditingMode()) { 4777 mWebTextView.setDefaultSelection(); 4778 return mWebTextView.dispatchKeyEvent(event); 4779 } 4780 } else if (nativeHasFocusNode()) { 4781 // In this case, the cursor is not on a text input, but the focus 4782 // might be. Check it, and if so, hand over to the WebTextView. 4783 rebuildWebTextView(); 4784 if (inEditingMode()) { 4785 mWebTextView.setDefaultSelection(); 4786 return mWebTextView.dispatchKeyEvent(event); 4787 } 4788 } 4789 4790 // TODO: should we pass all the keys to DOM or check the meta tag 4791 if (nativeCursorWantsKeyEvents() || true) { 4792 // pass the key to DOM 4793 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4794 // return true as DOM handles the key 4795 return true; 4796 } 4797 4798 // Bubble up the key event as WebView doesn't handle it 4799 return false; 4800 } 4801 4802 @Override 4803 public boolean onKeyUp(int keyCode, KeyEvent event) { 4804 if (DebugFlags.WEB_VIEW) { 4805 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4806 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4807 } 4808 4809 if (mNativeClass == 0) { 4810 return false; 4811 } 4812 4813 // special CALL handling when cursor node's href is "tel:XXX" 4814 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4815 String text = nativeCursorText(); 4816 if (!nativeCursorIsTextInput() && text != null 4817 && text.startsWith(SCHEME_TEL)) { 4818 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4819 getContext().startActivity(intent); 4820 return true; 4821 } 4822 } 4823 4824 // Bubble up the key event if 4825 // 1. it is a system key; or 4826 // 2. the host application wants to handle it; 4827 if (event.isSystem() 4828 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4829 return false; 4830 } 4831 4832 // accessibility support 4833 if (accessibilityScriptInjected()) { 4834 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4835 // if an accessibility script is injected we delegate to it the key handling. 4836 // this script is a screen reader which is a fully fledged solution for blind 4837 // users to navigate in and interact with web pages. 4838 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4839 return true; 4840 } else { 4841 // Clean up if accessibility was disabled after loading the current URL. 4842 mAccessibilityScriptInjected = false; 4843 } 4844 } else if (mAccessibilityInjector != null) { 4845 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4846 if (mAccessibilityInjector.onKeyEvent(event)) { 4847 // if an accessibility injector is present (no JavaScript enabled or the site 4848 // opts out injecting our JavaScript screen reader) we let it decide whether to 4849 // act on and consume the event. 4850 return true; 4851 } 4852 } else { 4853 // Clean up if accessibility was disabled after loading the current URL. 4854 mAccessibilityInjector = null; 4855 } 4856 } 4857 4858 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4859 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4860 if (nativePageShouldHandleShiftAndArrows()) { 4861 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 4862 return true; 4863 } 4864 // always handle the navigation keys in the UI thread 4865 // Bubble up the key event as WebView doesn't handle it 4866 return false; 4867 } 4868 4869 if (isEnterActionKey(keyCode)) { 4870 // remove the long press message first 4871 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4872 mGotCenterDown = false; 4873 4874 if (mSelectingText) { 4875 if (mExtendSelection) { 4876 copySelection(); 4877 selectionDone(); 4878 } else { 4879 mExtendSelection = true; 4880 nativeSetExtendSelection(); 4881 invalidate(); // draw the i-beam instead of the arrow 4882 } 4883 return true; // discard press if copy in progress 4884 } 4885 4886 // perform the single click 4887 Rect visibleRect = sendOurVisibleRect(); 4888 // Note that sendOurVisibleRect calls viewToContent, so the 4889 // coordinates should be in content coordinates. 4890 if (!nativeCursorIntersects(visibleRect)) { 4891 return false; 4892 } 4893 WebViewCore.CursorData data = cursorData(); 4894 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4895 playSoundEffect(SoundEffectConstants.CLICK); 4896 if (nativeCursorIsTextInput()) { 4897 rebuildWebTextView(); 4898 centerKeyPressOnTextField(); 4899 if (inEditingMode()) { 4900 mWebTextView.setDefaultSelection(); 4901 } 4902 return true; 4903 } 4904 clearTextEntry(); 4905 nativeShowCursorTimed(); 4906 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4907 return true; 4908 } 4909 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 4910 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4911 nativeCursorNodePointer()); 4912 return true; 4913 } 4914 } 4915 4916 // TODO: should we pass all the keys to DOM or check the meta tag 4917 if (nativeCursorWantsKeyEvents() || true) { 4918 // pass the key to DOM 4919 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4920 // return true as DOM handles the key 4921 return true; 4922 } 4923 4924 // Bubble up the key event as WebView doesn't handle it 4925 return false; 4926 } 4927 4928 /* 4929 * Enter selecting text mode, and see if CAB should be shown. 4930 * Returns true if the WebView is now in 4931 * selecting text mode (including if it was already in that mode, and this 4932 * method did nothing). 4933 */ 4934 private boolean setUpSelect(boolean selectWord, int x, int y) { 4935 if (0 == mNativeClass) return false; // client isn't initialized 4936 if (inFullScreenMode()) return false; 4937 if (mSelectingText) return true; 4938 nativeResetSelection(); 4939 if (selectWord && !nativeWordSelection(x, y)) { 4940 selectionDone(); 4941 return false; 4942 } 4943 mSelectCallback = new SelectActionModeCallback(); 4944 mSelectCallback.setWebView(this); 4945 if (startActionMode(mSelectCallback) == null) { 4946 // There is no ActionMode, so do not allow the user to modify a 4947 // selection. 4948 selectionDone(); 4949 return false; 4950 } 4951 mExtendSelection = false; 4952 mSelectingText = mDrawSelectionPointer = true; 4953 // don't let the picture change during text selection 4954 WebViewCore.pauseUpdatePicture(mWebViewCore); 4955 if (nativeHasCursorNode()) { 4956 Rect rect = nativeCursorNodeBounds(); 4957 mSelectX = contentToViewX(rect.left); 4958 mSelectY = contentToViewY(rect.top); 4959 } else if (mLastTouchY > getVisibleTitleHeight()) { 4960 mSelectX = mScrollX + mLastTouchX; 4961 mSelectY = mScrollY + mLastTouchY; 4962 } else { 4963 mSelectX = mScrollX + getViewWidth() / 2; 4964 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4965 } 4966 nativeHideCursor(); 4967 mMinAutoScrollX = 0; 4968 mMaxAutoScrollX = getViewWidth(); 4969 mMinAutoScrollY = 0; 4970 mMaxAutoScrollY = getViewHeightWithTitle(); 4971 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 4972 viewToContentY(mSelectY), mScrollingLayerRect, 4973 mScrollingLayerBounds); 4974 if (mScrollingLayer != 0) { 4975 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 4976 mMinAutoScrollX = Math.max(mMinAutoScrollX, 4977 contentToViewX(mScrollingLayerBounds.left)); 4978 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 4979 contentToViewX(mScrollingLayerBounds.right)); 4980 } 4981 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 4982 mMinAutoScrollY = Math.max(mMinAutoScrollY, 4983 contentToViewY(mScrollingLayerBounds.top)); 4984 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 4985 contentToViewY(mScrollingLayerBounds.bottom)); 4986 } 4987 } 4988 mMinAutoScrollX += SELECT_SCROLL; 4989 mMaxAutoScrollX -= SELECT_SCROLL; 4990 mMinAutoScrollY += SELECT_SCROLL; 4991 mMaxAutoScrollY -= SELECT_SCROLL; 4992 return true; 4993 } 4994 4995 /** 4996 * Use this method to put the WebView into text selection mode. 4997 * Do not rely on this functionality; it will be deprecated in the future. 4998 * @deprecated This method is now obsolete. 4999 */ 5000 @Deprecated 5001 public void emulateShiftHeld() { 5002 setUpSelect(false, 0, 0); 5003 } 5004 5005 /** 5006 * Select all of the text in this WebView. 5007 * 5008 * @hide pending API council approval. 5009 */ 5010 public void selectAll() { 5011 if (0 == mNativeClass) return; // client isn't initialized 5012 if (inFullScreenMode()) return; 5013 if (!mSelectingText) { 5014 // retrieve a point somewhere within the text 5015 Point select = nativeSelectableText(); 5016 if (!selectText(select.x, select.y)) return; 5017 } 5018 nativeSelectAll(); 5019 mDrawSelectionPointer = false; 5020 mExtendSelection = true; 5021 invalidate(); 5022 } 5023 5024 /** 5025 * Called when the selection has been removed. 5026 */ 5027 void selectionDone() { 5028 if (mSelectingText) { 5029 mSelectingText = false; 5030 // finish is idempotent, so this is fine even if selectionDone was 5031 // called by mSelectCallback.onDestroyActionMode 5032 mSelectCallback.finish(); 5033 mSelectCallback = null; 5034 WebViewCore.resumePriority(); 5035 WebViewCore.resumeUpdatePicture(mWebViewCore); 5036 invalidate(); // redraw without selection 5037 mAutoScrollX = 0; 5038 mAutoScrollY = 0; 5039 mSentAutoScrollMessage = false; 5040 } 5041 } 5042 5043 /** 5044 * Copy the selection to the clipboard 5045 * 5046 * @hide pending API council approval. 5047 */ 5048 public boolean copySelection() { 5049 boolean copiedSomething = false; 5050 String selection = getSelection(); 5051 if (selection != null && selection != "") { 5052 if (DebugFlags.WEB_VIEW) { 5053 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5054 } 5055 Toast.makeText(mContext 5056 , com.android.internal.R.string.text_copied 5057 , Toast.LENGTH_SHORT).show(); 5058 copiedSomething = true; 5059 ClipboardManager cm = (ClipboardManager)getContext() 5060 .getSystemService(Context.CLIPBOARD_SERVICE); 5061 cm.setText(selection); 5062 } 5063 invalidate(); // remove selection region and pointer 5064 return copiedSomething; 5065 } 5066 5067 /** 5068 * @hide pending API Council approval. 5069 */ 5070 public SearchBox getSearchBox() { 5071 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5072 return null; 5073 } 5074 return mWebViewCore.getBrowserFrame().getSearchBox(); 5075 } 5076 5077 /** 5078 * Returns the currently highlighted text as a string. 5079 */ 5080 String getSelection() { 5081 if (mNativeClass == 0) return ""; 5082 return nativeGetSelection(); 5083 } 5084 5085 @Override 5086 protected void onAttachedToWindow() { 5087 super.onAttachedToWindow(); 5088 if (hasWindowFocus()) setActive(true); 5089 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5090 if (mGlobalLayoutListener == null) { 5091 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5092 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5093 } 5094 if (mScrollChangedListener == null) { 5095 mScrollChangedListener = new InnerScrollChangedListener(); 5096 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5097 } 5098 5099 addAccessibilityApisToJavaScript(); 5100 5101 mTouchEventQueue.reset(); 5102 } 5103 5104 @Override 5105 protected void onDetachedFromWindow() { 5106 clearHelpers(); 5107 mZoomManager.dismissZoomPicker(); 5108 if (hasWindowFocus()) setActive(false); 5109 5110 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5111 if (mGlobalLayoutListener != null) { 5112 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5113 mGlobalLayoutListener = null; 5114 } 5115 if (mScrollChangedListener != null) { 5116 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5117 mScrollChangedListener = null; 5118 } 5119 5120 removeAccessibilityApisFromJavaScript(); 5121 5122 super.onDetachedFromWindow(); 5123 } 5124 5125 @Override 5126 protected void onVisibilityChanged(View changedView, int visibility) { 5127 super.onVisibilityChanged(changedView, visibility); 5128 // The zoomManager may be null if the webview is created from XML that 5129 // specifies the view's visibility param as not visible (see http://b/2794841) 5130 if (visibility != View.VISIBLE && mZoomManager != null) { 5131 mZoomManager.dismissZoomPicker(); 5132 } 5133 } 5134 5135 /** 5136 * @deprecated WebView no longer needs to implement 5137 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5138 */ 5139 @Deprecated 5140 public void onChildViewAdded(View parent, View child) {} 5141 5142 /** 5143 * @deprecated WebView no longer needs to implement 5144 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5145 */ 5146 @Deprecated 5147 public void onChildViewRemoved(View p, View child) {} 5148 5149 /** 5150 * @deprecated WebView should not have implemented 5151 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5152 */ 5153 @Deprecated 5154 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5155 } 5156 5157 void setActive(boolean active) { 5158 if (active) { 5159 if (hasFocus()) { 5160 // If our window regained focus, and we have focus, then begin 5161 // drawing the cursor ring 5162 mDrawCursorRing = true; 5163 setFocusControllerActive(true); 5164 if (mNativeClass != 0) { 5165 nativeRecordButtons(true, false, true); 5166 } 5167 } else { 5168 if (!inEditingMode()) { 5169 // If our window gained focus, but we do not have it, do not 5170 // draw the cursor ring. 5171 mDrawCursorRing = false; 5172 setFocusControllerActive(false); 5173 } 5174 // We do not call nativeRecordButtons here because we assume 5175 // that when we lost focus, or window focus, it got called with 5176 // false for the first parameter 5177 } 5178 } else { 5179 if (!mZoomManager.isZoomPickerVisible()) { 5180 /* 5181 * The external zoom controls come in their own window, so our 5182 * window loses focus. Our policy is to not draw the cursor ring 5183 * if our window is not focused, but this is an exception since 5184 * the user can still navigate the web page with the zoom 5185 * controls showing. 5186 */ 5187 mDrawCursorRing = false; 5188 } 5189 mKeysPressed.clear(); 5190 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5191 mTouchMode = TOUCH_DONE_MODE; 5192 if (mNativeClass != 0) { 5193 nativeRecordButtons(false, false, true); 5194 } 5195 setFocusControllerActive(false); 5196 } 5197 invalidate(); 5198 } 5199 5200 // To avoid drawing the cursor ring, and remove the TextView when our window 5201 // loses focus. 5202 @Override 5203 public void onWindowFocusChanged(boolean hasWindowFocus) { 5204 setActive(hasWindowFocus); 5205 if (hasWindowFocus) { 5206 JWebCoreJavaBridge.setActiveWebView(this); 5207 } else { 5208 JWebCoreJavaBridge.removeActiveWebView(this); 5209 } 5210 super.onWindowFocusChanged(hasWindowFocus); 5211 } 5212 5213 /* 5214 * Pass a message to WebCore Thread, telling the WebCore::Page's 5215 * FocusController to be "inactive" so that it will 5216 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5217 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5218 */ 5219 /* package */ void setFocusControllerActive(boolean active) { 5220 if (mWebViewCore == null) return; 5221 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5222 // Need to send this message after the document regains focus. 5223 if (active && mListBoxMessage != null) { 5224 mWebViewCore.sendMessage(mListBoxMessage); 5225 mListBoxMessage = null; 5226 } 5227 } 5228 5229 @Override 5230 protected void onFocusChanged(boolean focused, int direction, 5231 Rect previouslyFocusedRect) { 5232 if (DebugFlags.WEB_VIEW) { 5233 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5234 } 5235 if (focused) { 5236 // When we regain focus, if we have window focus, resume drawing 5237 // the cursor ring 5238 if (hasWindowFocus()) { 5239 mDrawCursorRing = true; 5240 if (mNativeClass != 0) { 5241 nativeRecordButtons(true, false, true); 5242 } 5243 setFocusControllerActive(true); 5244 //} else { 5245 // The WebView has gained focus while we do not have 5246 // windowfocus. When our window lost focus, we should have 5247 // called nativeRecordButtons(false...) 5248 } 5249 } else { 5250 // When we lost focus, unless focus went to the TextView (which is 5251 // true if we are in editing mode), stop drawing the cursor ring. 5252 if (!inEditingMode()) { 5253 mDrawCursorRing = false; 5254 if (mNativeClass != 0) { 5255 nativeRecordButtons(false, false, true); 5256 } 5257 setFocusControllerActive(false); 5258 } 5259 mKeysPressed.clear(); 5260 } 5261 5262 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5263 } 5264 5265 void setGLRectViewport() { 5266 // Use the getGlobalVisibleRect() to get the intersection among the parents 5267 // visible == false means we're clipped - send a null rect down to indicate that 5268 // we should not draw 5269 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5270 if (visible) { 5271 // Then need to invert the Y axis, just for GL 5272 View rootView = getRootView(); 5273 int rootViewHeight = rootView.getHeight(); 5274 mViewRectViewport.set(mGLRectViewport); 5275 int savedWebViewBottom = mGLRectViewport.bottom; 5276 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeight(); 5277 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5278 mGLViewportEmpty = false; 5279 } else { 5280 mGLViewportEmpty = true; 5281 } 5282 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 5283 mGLViewportEmpty ? null : mViewRectViewport); 5284 } 5285 5286 /** 5287 * @hide 5288 */ 5289 @Override 5290 protected boolean setFrame(int left, int top, int right, int bottom) { 5291 boolean changed = super.setFrame(left, top, right, bottom); 5292 if (!changed && mHeightCanMeasure) { 5293 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5294 // in WebViewCore after we get the first layout. We do call 5295 // requestLayout() when we get contentSizeChanged(). But the View 5296 // system won't call onSizeChanged if the dimension is not changed. 5297 // In this case, we need to call sendViewSizeZoom() explicitly to 5298 // notify the WebKit about the new dimensions. 5299 sendViewSizeZoom(false); 5300 } 5301 setGLRectViewport(); 5302 return changed; 5303 } 5304 5305 @Override 5306 protected void onSizeChanged(int w, int h, int ow, int oh) { 5307 super.onSizeChanged(w, h, ow, oh); 5308 5309 // adjust the max viewport width depending on the view dimensions. This 5310 // is to ensure the scaling is not going insane. So do not shrink it if 5311 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5312 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5313 if (newMaxViewportWidth > sMaxViewportWidth) { 5314 sMaxViewportWidth = newMaxViewportWidth; 5315 } 5316 5317 mZoomManager.onSizeChanged(w, h, ow, oh); 5318 } 5319 5320 @Override 5321 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5322 super.onScrollChanged(l, t, oldl, oldt); 5323 if (!mInOverScrollMode) { 5324 sendOurVisibleRect(); 5325 // update WebKit if visible title bar height changed. The logic is same 5326 // as getVisibleTitleHeight. 5327 int titleHeight = getTitleHeight(); 5328 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5329 sendViewSizeZoom(false); 5330 } 5331 } 5332 } 5333 5334 @Override 5335 public boolean dispatchKeyEvent(KeyEvent event) { 5336 switch (event.getAction()) { 5337 case KeyEvent.ACTION_DOWN: 5338 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5339 break; 5340 case KeyEvent.ACTION_MULTIPLE: 5341 // Always accept the action. 5342 break; 5343 case KeyEvent.ACTION_UP: 5344 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5345 if (location == -1) { 5346 // We did not receive the key down for this key, so do not 5347 // handle the key up. 5348 return false; 5349 } else { 5350 // We did receive the key down. Handle the key up, and 5351 // remove it from our pressed keys. 5352 mKeysPressed.remove(location); 5353 } 5354 break; 5355 default: 5356 // Accept the action. This should not happen, unless a new 5357 // action is added to KeyEvent. 5358 break; 5359 } 5360 if (inEditingMode() && mWebTextView.isFocused()) { 5361 // Ensure that the WebTextView gets the event, even if it does 5362 // not currently have a bounds. 5363 return mWebTextView.dispatchKeyEvent(event); 5364 } else { 5365 return super.dispatchKeyEvent(event); 5366 } 5367 } 5368 5369 // Here are the snap align logic: 5370 // 1. If it starts nearly horizontally or vertically, snap align; 5371 // 2. If there is a dramitic direction change, let it go; 5372 // 3. If there is a same direction back and forth, lock it. 5373 5374 // adjustable parameters 5375 private int mMinLockSnapReverseDistance; 5376 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 5377 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 5378 5379 private boolean hitFocusedPlugin(int contentX, int contentY) { 5380 if (DebugFlags.WEB_VIEW) { 5381 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5382 Rect r = nativeFocusNodeBounds(); 5383 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5384 + ", " + r.right + ", " + r.bottom + ")"); 5385 } 5386 return nativeFocusIsPlugin() 5387 && nativeFocusNodeBounds().contains(contentX, contentY); 5388 } 5389 5390 private boolean shouldForwardTouchEvent() { 5391 return mFullScreenHolder != null || (mForwardTouchEvents 5392 && !mSelectingText 5393 && mPreventDefault != PREVENT_DEFAULT_IGNORE 5394 && mPreventDefault != PREVENT_DEFAULT_NO); 5395 } 5396 5397 private boolean inFullScreenMode() { 5398 return mFullScreenHolder != null; 5399 } 5400 5401 private void dismissFullScreenMode() { 5402 if (inFullScreenMode()) { 5403 mFullScreenHolder.dismiss(); 5404 mFullScreenHolder = null; 5405 } 5406 } 5407 5408 void onPinchToZoomAnimationStart() { 5409 // cancel the single touch handling 5410 cancelTouch(); 5411 onZoomAnimationStart(); 5412 } 5413 5414 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5415 onZoomAnimationEnd(); 5416 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5417 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5418 // as it may trigger the unwanted fling. 5419 mTouchMode = TOUCH_PINCH_DRAG; 5420 mConfirmMove = true; 5421 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5422 } 5423 5424 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5425 // layer is found. 5426 private void startScrollingLayer(float x, float y) { 5427 int contentX = viewToContentX((int) x + mScrollX); 5428 int contentY = viewToContentY((int) y + mScrollY); 5429 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5430 mScrollingLayerRect, mScrollingLayerBounds); 5431 if (mScrollingLayer != 0) { 5432 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5433 } 5434 } 5435 5436 // 1/(density * density) used to compute the distance between points. 5437 // Computed in init(). 5438 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5439 5440 // The distance between two points reported in onTouchEvent scaled by the 5441 // density of the screen. 5442 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5443 5444 @Override 5445 public boolean onTouchEvent(MotionEvent ev) { 5446 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5447 return false; 5448 } 5449 5450 if (DebugFlags.WEB_VIEW) { 5451 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5452 + " mTouchMode=" + mTouchMode 5453 + " numPointers=" + ev.getPointerCount()); 5454 } 5455 5456 // If WebKit wasn't interested in this multitouch gesture, enqueue 5457 // the event for handling directly rather than making the round trip 5458 // to WebKit and back. 5459 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 5460 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 5461 } else { 5462 mTouchEventQueue.enqueueTouchEvent(ev); 5463 } 5464 5465 // Since all events are handled asynchronously, we always want the gesture stream. 5466 return true; 5467 } 5468 5469 /* 5470 * Common code for single touch and multi-touch. 5471 * (x, y) denotes current focus point, which is the touch point for single touch 5472 * and the middle point for multi-touch. 5473 */ 5474 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 5475 long eventTime = ev.getEventTime(); 5476 5477 // Due to the touch screen edge effect, a touch closer to the edge 5478 // always snapped to the edge. As getViewWidth() can be different from 5479 // getWidth() due to the scrollbar, adjusting the point to match 5480 // getViewWidth(). Same applied to the height. 5481 x = Math.min(x, getViewWidth() - 1); 5482 y = Math.min(y, getViewHeightWithTitle() - 1); 5483 5484 int deltaX = mLastTouchX - x; 5485 int deltaY = mLastTouchY - y; 5486 int contentX = viewToContentX(x + mScrollX); 5487 int contentY = viewToContentY(y + mScrollY); 5488 5489 switch (action) { 5490 case MotionEvent.ACTION_DOWN: { 5491 mPreventDefault = PREVENT_DEFAULT_NO; 5492 mConfirmMove = false; 5493 mInitialHitTestResult = null; 5494 if (!mScroller.isFinished()) { 5495 // stop the current scroll animation, but if this is 5496 // the start of a fling, allow it to add to the current 5497 // fling's velocity 5498 mScroller.abortAnimation(); 5499 mTouchMode = TOUCH_DRAG_START_MODE; 5500 mConfirmMove = true; 5501 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5502 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5503 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5504 if (getSettings().supportTouchOnly()) { 5505 removeTouchHighlight(true); 5506 } 5507 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5508 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5509 } else { 5510 // commit the short press action for the previous tap 5511 doShortPress(); 5512 mTouchMode = TOUCH_INIT_MODE; 5513 mDeferTouchProcess = (!inFullScreenMode() 5514 && mForwardTouchEvents) ? hitFocusedPlugin( 5515 contentX, contentY) : false; 5516 } 5517 } else { // the normal case 5518 mTouchMode = TOUCH_INIT_MODE; 5519 mDeferTouchProcess = (!inFullScreenMode() 5520 && mForwardTouchEvents) ? hitFocusedPlugin( 5521 contentX, contentY) : false; 5522 mWebViewCore.sendMessage( 5523 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5524 if (getSettings().supportTouchOnly()) { 5525 TouchHighlightData data = new TouchHighlightData(); 5526 data.mX = contentX; 5527 data.mY = contentY; 5528 data.mSlop = viewToContentDimension(mNavSlop); 5529 mWebViewCore.sendMessageDelayed( 5530 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 5531 ViewConfiguration.getTapTimeout()); 5532 if (DEBUG_TOUCH_HIGHLIGHT) { 5533 if (getSettings().getNavDump()) { 5534 mTouchHighlightX = (int) x + mScrollX; 5535 mTouchHighlightY = (int) y + mScrollY; 5536 mPrivateHandler.postDelayed(new Runnable() { 5537 public void run() { 5538 mTouchHighlightX = mTouchHighlightY = 0; 5539 invalidate(); 5540 } 5541 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5542 } 5543 } 5544 } 5545 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5546 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5547 (eventTime - mLastTouchUpTime), eventTime); 5548 } 5549 if (mSelectingText) { 5550 mDrawSelectionPointer = false; 5551 mSelectionStarted = nativeStartSelection(contentX, contentY); 5552 if (DebugFlags.WEB_VIEW) { 5553 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5554 } 5555 invalidate(); 5556 } 5557 } 5558 // Trigger the link 5559 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 5560 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 5561 mPrivateHandler.sendEmptyMessageDelayed( 5562 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5563 mPrivateHandler.sendEmptyMessageDelayed( 5564 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5565 if (inFullScreenMode() || mDeferTouchProcess) { 5566 mPreventDefault = PREVENT_DEFAULT_YES; 5567 } else if (mForwardTouchEvents) { 5568 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5569 } else { 5570 mPreventDefault = PREVENT_DEFAULT_NO; 5571 } 5572 // pass the touch events from UI thread to WebCore thread 5573 if (shouldForwardTouchEvent()) { 5574 TouchEventData ted = new TouchEventData(); 5575 ted.mAction = action; 5576 ted.mIds = new int[1]; 5577 ted.mIds[0] = ev.getPointerId(0); 5578 ted.mPoints = new Point[1]; 5579 ted.mPoints[0] = new Point(contentX, contentY); 5580 ted.mPointsInView = new Point[1]; 5581 ted.mPointsInView[0] = new Point(x, y); 5582 ted.mMetaState = ev.getMetaState(); 5583 ted.mReprocess = mDeferTouchProcess; 5584 ted.mNativeLayer = nativeScrollableLayer( 5585 contentX, contentY, ted.mNativeLayerRect, null); 5586 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5587 mTouchEventQueue.preQueueTouchEventData(ted); 5588 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5589 if (mDeferTouchProcess) { 5590 // still needs to set them for compute deltaX/Y 5591 mLastTouchX = x; 5592 mLastTouchY = y; 5593 break; 5594 } 5595 if (!inFullScreenMode()) { 5596 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5597 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5598 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5599 action, 0), TAP_TIMEOUT); 5600 } 5601 } 5602 } 5603 startTouch(x, y, eventTime); 5604 break; 5605 } 5606 case MotionEvent.ACTION_MOVE: { 5607 boolean firstMove = false; 5608 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5609 >= mTouchSlopSquare) { 5610 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5611 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5612 mConfirmMove = true; 5613 firstMove = true; 5614 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5615 mTouchMode = TOUCH_INIT_MODE; 5616 } 5617 if (getSettings().supportTouchOnly()) { 5618 removeTouchHighlight(true); 5619 } 5620 } 5621 // pass the touch events from UI thread to WebCore thread 5622 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5623 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5624 TouchEventData ted = new TouchEventData(); 5625 ted.mAction = action; 5626 ted.mIds = new int[1]; 5627 ted.mIds[0] = ev.getPointerId(0); 5628 ted.mPoints = new Point[1]; 5629 ted.mPoints[0] = new Point(contentX, contentY); 5630 ted.mPointsInView = new Point[1]; 5631 ted.mPointsInView[0] = new Point(x, y); 5632 ted.mMetaState = ev.getMetaState(); 5633 ted.mReprocess = mDeferTouchProcess; 5634 ted.mNativeLayer = mScrollingLayer; 5635 ted.mNativeLayerRect.set(mScrollingLayerRect); 5636 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5637 mTouchEventQueue.preQueueTouchEventData(ted); 5638 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5639 mLastSentTouchTime = eventTime; 5640 if (mDeferTouchProcess) { 5641 break; 5642 } 5643 if (firstMove && !inFullScreenMode()) { 5644 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5645 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5646 action, 0), TAP_TIMEOUT); 5647 } 5648 } 5649 if (mTouchMode == TOUCH_DONE_MODE 5650 || mPreventDefault == PREVENT_DEFAULT_YES) { 5651 // no dragging during scroll zoom animation, or when prevent 5652 // default is yes 5653 break; 5654 } 5655 if (mVelocityTracker == null) { 5656 Log.e(LOGTAG, "Got null mVelocityTracker when " 5657 + "mPreventDefault = " + mPreventDefault 5658 + " mDeferTouchProcess = " + mDeferTouchProcess 5659 + " mTouchMode = " + mTouchMode); 5660 } else { 5661 mVelocityTracker.addMovement(ev); 5662 } 5663 if (mSelectingText && mSelectionStarted) { 5664 if (DebugFlags.WEB_VIEW) { 5665 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5666 } 5667 ViewParent parent = getParent(); 5668 if (parent != null) { 5669 parent.requestDisallowInterceptTouchEvent(true); 5670 } 5671 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 5672 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 5673 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 5674 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 5675 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 5676 && !mSentAutoScrollMessage) { 5677 mSentAutoScrollMessage = true; 5678 mPrivateHandler.sendEmptyMessageDelayed( 5679 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 5680 } 5681 if (deltaX != 0 || deltaY != 0) { 5682 nativeExtendSelection(contentX, contentY); 5683 invalidate(); 5684 } 5685 break; 5686 } 5687 5688 if (mTouchMode != TOUCH_DRAG_MODE && 5689 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5690 5691 if (!mConfirmMove) { 5692 break; 5693 } 5694 5695 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5696 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5697 // track mLastTouchTime as we may need to do fling at 5698 // ACTION_UP 5699 mLastTouchTime = eventTime; 5700 break; 5701 } 5702 5703 // Only lock dragging to one axis if we don't have a scale in progress. 5704 // Scaling implies free-roaming movement. Note this is only ever a question 5705 // if mZoomManager.supportsPanDuringZoom() is true. 5706 final ScaleGestureDetector detector = 5707 mZoomManager.getMultiTouchGestureDetector(); 5708 if (detector == null || !detector.isInProgress()) { 5709 // if it starts nearly horizontal or vertical, enforce it 5710 int ax = Math.abs(deltaX); 5711 int ay = Math.abs(deltaY); 5712 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5713 mSnapScrollMode = SNAP_X; 5714 mSnapPositive = deltaX > 0; 5715 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5716 mSnapScrollMode = SNAP_Y; 5717 mSnapPositive = deltaY > 0; 5718 } 5719 } 5720 5721 mTouchMode = TOUCH_DRAG_MODE; 5722 mLastTouchX = x; 5723 mLastTouchY = y; 5724 deltaX = 0; 5725 deltaY = 0; 5726 5727 startScrollingLayer(x, y); 5728 startDrag(); 5729 } 5730 5731 // do pan 5732 boolean done = false; 5733 boolean keepScrollBarsVisible = false; 5734 if (deltaX == 0 && deltaY == 0) { 5735 keepScrollBarsVisible = done = true; 5736 } else { 5737 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5738 int ax = Math.abs(deltaX); 5739 int ay = Math.abs(deltaY); 5740 if (mSnapScrollMode == SNAP_X) { 5741 // radical change means getting out of snap mode 5742 if (ay > MAX_SLOPE_FOR_DIAG * ax 5743 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5744 mSnapScrollMode = SNAP_NONE; 5745 } 5746 // reverse direction means lock in the snap mode 5747 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5748 (mSnapPositive 5749 ? deltaX < -mMinLockSnapReverseDistance 5750 : deltaX > mMinLockSnapReverseDistance)) { 5751 mSnapScrollMode |= SNAP_LOCK; 5752 } 5753 } else { 5754 // radical change means getting out of snap mode 5755 if (ax > MAX_SLOPE_FOR_DIAG * ay 5756 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5757 mSnapScrollMode = SNAP_NONE; 5758 } 5759 // reverse direction means lock in the snap mode 5760 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5761 (mSnapPositive 5762 ? deltaY < -mMinLockSnapReverseDistance 5763 : deltaY > mMinLockSnapReverseDistance)) { 5764 mSnapScrollMode |= SNAP_LOCK; 5765 } 5766 } 5767 } 5768 if (mSnapScrollMode != SNAP_NONE) { 5769 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5770 deltaY = 0; 5771 } else { 5772 deltaX = 0; 5773 } 5774 } 5775 if ((deltaX | deltaY) != 0) { 5776 if (deltaX != 0) { 5777 mLastTouchX = x; 5778 } 5779 if (deltaY != 0) { 5780 mLastTouchY = y; 5781 } 5782 mHeldMotionless = MOTIONLESS_FALSE; 5783 } 5784 mLastTouchTime = eventTime; 5785 } 5786 5787 doDrag(deltaX, deltaY); 5788 5789 // Turn off scrollbars when dragging a layer. 5790 if (keepScrollBarsVisible && 5791 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5792 if (mHeldMotionless != MOTIONLESS_TRUE) { 5793 mHeldMotionless = MOTIONLESS_TRUE; 5794 invalidate(); 5795 } 5796 // keep the scrollbar on the screen even there is no scroll 5797 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5798 false); 5799 // return false to indicate that we can't pan out of the 5800 // view space 5801 return !done; 5802 } 5803 break; 5804 } 5805 case MotionEvent.ACTION_UP: { 5806 if (!isFocused()) requestFocus(); 5807 // pass the touch events from UI thread to WebCore thread 5808 if (shouldForwardTouchEvent()) { 5809 TouchEventData ted = new TouchEventData(); 5810 ted.mIds = new int[1]; 5811 ted.mIds[0] = ev.getPointerId(0); 5812 ted.mAction = action; 5813 ted.mPoints = new Point[1]; 5814 ted.mPoints[0] = new Point(contentX, contentY); 5815 ted.mPointsInView = new Point[1]; 5816 ted.mPointsInView[0] = new Point(x, y); 5817 ted.mMetaState = ev.getMetaState(); 5818 ted.mReprocess = mDeferTouchProcess; 5819 ted.mNativeLayer = mScrollingLayer; 5820 ted.mNativeLayerRect.set(mScrollingLayerRect); 5821 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5822 mTouchEventQueue.preQueueTouchEventData(ted); 5823 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5824 } 5825 mLastTouchUpTime = eventTime; 5826 if (mSentAutoScrollMessage) { 5827 mAutoScrollX = mAutoScrollY = 0; 5828 } 5829 switch (mTouchMode) { 5830 case TOUCH_DOUBLE_TAP_MODE: // double tap 5831 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5832 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5833 if (inFullScreenMode() || mDeferTouchProcess) { 5834 TouchEventData ted = new TouchEventData(); 5835 ted.mIds = new int[1]; 5836 ted.mIds[0] = ev.getPointerId(0); 5837 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5838 ted.mPoints = new Point[1]; 5839 ted.mPoints[0] = new Point(contentX, contentY); 5840 ted.mPointsInView = new Point[1]; 5841 ted.mPointsInView[0] = new Point(x, y); 5842 ted.mMetaState = ev.getMetaState(); 5843 ted.mReprocess = mDeferTouchProcess; 5844 ted.mNativeLayer = nativeScrollableLayer( 5845 contentX, contentY, 5846 ted.mNativeLayerRect, null); 5847 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5848 mTouchEventQueue.preQueueTouchEventData(ted); 5849 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5850 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5851 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5852 mTouchMode = TOUCH_DONE_MODE; 5853 } 5854 break; 5855 case TOUCH_INIT_MODE: // tap 5856 case TOUCH_SHORTPRESS_START_MODE: 5857 case TOUCH_SHORTPRESS_MODE: 5858 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5859 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5860 if (mConfirmMove) { 5861 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5862 " WebCore's response for touch down."); 5863 if (mPreventDefault != PREVENT_DEFAULT_YES 5864 && (computeMaxScrollX() > 0 5865 || computeMaxScrollY() > 0)) { 5866 // If the user has performed a very quick touch 5867 // sequence it is possible that we may get here 5868 // before WebCore has had a chance to process the events. 5869 // In this case, any call to preventDefault in the 5870 // JS touch handler will not have been executed yet. 5871 // Hence we will see both the UI (now) and WebCore 5872 // (when context switches) handling the event, 5873 // regardless of whether the web developer actually 5874 // doeses preventDefault in their touch handler. This 5875 // is the nature of our asynchronous touch model. 5876 5877 // we will not rewrite drag code here, but we 5878 // will try fling if it applies. 5879 WebViewCore.reducePriority(); 5880 // to get better performance, pause updating the 5881 // picture 5882 WebViewCore.pauseUpdatePicture(mWebViewCore); 5883 // fall through to TOUCH_DRAG_MODE 5884 } else { 5885 // WebKit may consume the touch event and modify 5886 // DOM. drawContentPicture() will be called with 5887 // animateSroll as true for better performance. 5888 // Force redraw in high-quality. 5889 invalidate(); 5890 break; 5891 } 5892 } else { 5893 if (mSelectingText) { 5894 // tapping on selection or controls does nothing 5895 if (!nativeHitSelection(contentX, contentY)) { 5896 selectionDone(); 5897 } 5898 break; 5899 } 5900 // only trigger double tap if the WebView is 5901 // scalable 5902 if (mTouchMode == TOUCH_INIT_MODE 5903 && (canZoomIn() || canZoomOut())) { 5904 mPrivateHandler.sendEmptyMessageDelayed( 5905 RELEASE_SINGLE_TAP, ViewConfiguration 5906 .getDoubleTapTimeout()); 5907 } else { 5908 doShortPress(); 5909 } 5910 break; 5911 } 5912 case TOUCH_DRAG_MODE: 5913 case TOUCH_DRAG_LAYER_MODE: 5914 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5915 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5916 // if the user waits a while w/o moving before the 5917 // up, we don't want to do a fling 5918 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5919 if (mVelocityTracker == null) { 5920 Log.e(LOGTAG, "Got null mVelocityTracker when " 5921 + "mPreventDefault = " 5922 + mPreventDefault 5923 + " mDeferTouchProcess = " 5924 + mDeferTouchProcess); 5925 } else { 5926 mVelocityTracker.addMovement(ev); 5927 } 5928 // set to MOTIONLESS_IGNORE so that it won't keep 5929 // removing and sending message in 5930 // drawCoreAndCursorRing() 5931 mHeldMotionless = MOTIONLESS_IGNORE; 5932 doFling(); 5933 break; 5934 } else { 5935 if (mScroller.springBack(mScrollX, mScrollY, 0, 5936 computeMaxScrollX(), 0, 5937 computeMaxScrollY())) { 5938 invalidate(); 5939 } 5940 } 5941 // redraw in high-quality, as we're done dragging 5942 mHeldMotionless = MOTIONLESS_TRUE; 5943 invalidate(); 5944 // fall through 5945 case TOUCH_DRAG_START_MODE: 5946 // TOUCH_DRAG_START_MODE should not happen for the real 5947 // device as we almost certain will get a MOVE. But this 5948 // is possible on emulator. 5949 mLastVelocity = 0; 5950 WebViewCore.resumePriority(); 5951 if (!mSelectingText) { 5952 WebViewCore.resumeUpdatePicture(mWebViewCore); 5953 } 5954 break; 5955 } 5956 stopTouch(); 5957 break; 5958 } 5959 case MotionEvent.ACTION_CANCEL: { 5960 if (mTouchMode == TOUCH_DRAG_MODE) { 5961 mScroller.springBack(mScrollX, mScrollY, 0, 5962 computeMaxScrollX(), 0, computeMaxScrollY()); 5963 invalidate(); 5964 } 5965 cancelWebCoreTouchEvent(contentX, contentY, false); 5966 cancelTouch(); 5967 break; 5968 } 5969 } 5970 return true; 5971 } 5972 5973 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 5974 TouchEventData ted = new TouchEventData(); 5975 ted.mAction = ev.getActionMasked(); 5976 final int count = ev.getPointerCount(); 5977 ted.mIds = new int[count]; 5978 ted.mPoints = new Point[count]; 5979 ted.mPointsInView = new Point[count]; 5980 for (int c = 0; c < count; c++) { 5981 ted.mIds[c] = ev.getPointerId(c); 5982 int x = viewToContentX((int) ev.getX(c) + mScrollX); 5983 int y = viewToContentY((int) ev.getY(c) + mScrollY); 5984 ted.mPoints[c] = new Point(x, y); 5985 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 5986 } 5987 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 5988 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 5989 ted.mActionIndex = ev.getActionIndex(); 5990 } 5991 ted.mMetaState = ev.getMetaState(); 5992 ted.mReprocess = true; 5993 ted.mMotionEvent = MotionEvent.obtain(ev); 5994 ted.mSequence = sequence; 5995 mTouchEventQueue.preQueueTouchEventData(ted); 5996 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5997 cancelLongPress(); 5998 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5999 } 6000 6001 void handleMultiTouchInWebView(MotionEvent ev) { 6002 if (DebugFlags.WEB_VIEW) { 6003 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 6004 + " mTouchMode=" + mTouchMode 6005 + " numPointers=" + ev.getPointerCount() 6006 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 6007 } 6008 6009 final ScaleGestureDetector detector = 6010 mZoomManager.getMultiTouchGestureDetector(); 6011 6012 // A few apps use WebView but don't instantiate gesture detector. 6013 // We don't need to support multi touch for them. 6014 if (detector == null) return; 6015 6016 float x = ev.getX(); 6017 float y = ev.getY(); 6018 6019 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6020 detector.onTouchEvent(ev); 6021 6022 if (detector.isInProgress()) { 6023 if (DebugFlags.WEB_VIEW) { 6024 Log.v(LOGTAG, "detector is in progress"); 6025 } 6026 mLastTouchTime = ev.getEventTime(); 6027 x = detector.getFocusX(); 6028 y = detector.getFocusY(); 6029 6030 cancelLongPress(); 6031 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6032 if (!mZoomManager.supportsPanDuringZoom()) { 6033 return; 6034 } 6035 mTouchMode = TOUCH_DRAG_MODE; 6036 if (mVelocityTracker == null) { 6037 mVelocityTracker = VelocityTracker.obtain(); 6038 } 6039 } 6040 } 6041 6042 int action = ev.getActionMasked(); 6043 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6044 cancelTouch(); 6045 action = MotionEvent.ACTION_DOWN; 6046 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() == 2) { 6047 // set mLastTouchX/Y to the remaining point 6048 mLastTouchX = Math.round(x); 6049 mLastTouchY = Math.round(y); 6050 } else if (action == MotionEvent.ACTION_MOVE) { 6051 // negative x or y indicate it is on the edge, skip it. 6052 if (x < 0 || y < 0) { 6053 return; 6054 } 6055 } 6056 6057 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6058 } 6059 6060 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6061 if (shouldForwardTouchEvent()) { 6062 if (removeEvents) { 6063 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6064 } 6065 TouchEventData ted = new TouchEventData(); 6066 ted.mIds = new int[1]; 6067 ted.mIds[0] = 0; 6068 ted.mPoints = new Point[1]; 6069 ted.mPoints[0] = new Point(x, y); 6070 ted.mPointsInView = new Point[1]; 6071 int viewX = contentToViewX(x) - mScrollX; 6072 int viewY = contentToViewY(y) - mScrollY; 6073 ted.mPointsInView[0] = new Point(viewX, viewY); 6074 ted.mAction = MotionEvent.ACTION_CANCEL; 6075 ted.mNativeLayer = nativeScrollableLayer( 6076 x, y, ted.mNativeLayerRect, null); 6077 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6078 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6079 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6080 6081 if (removeEvents) { 6082 // Mark this after sending the message above; we should 6083 // be willing to ignore the cancel event that we just sent. 6084 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 6085 } 6086 } 6087 } 6088 6089 private void startTouch(float x, float y, long eventTime) { 6090 // Remember where the motion event started 6091 mLastTouchX = Math.round(x); 6092 mLastTouchY = Math.round(y); 6093 mLastTouchTime = eventTime; 6094 mVelocityTracker = VelocityTracker.obtain(); 6095 mSnapScrollMode = SNAP_NONE; 6096 } 6097 6098 private void startDrag() { 6099 WebViewCore.reducePriority(); 6100 // to get better performance, pause updating the picture 6101 WebViewCore.pauseUpdatePicture(mWebViewCore); 6102 if (!mDragFromTextInput) { 6103 nativeHideCursor(); 6104 } 6105 6106 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6107 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6108 mZoomManager.invokeZoomPicker(); 6109 } 6110 } 6111 6112 private void doDrag(int deltaX, int deltaY) { 6113 if ((deltaX | deltaY) != 0) { 6114 int oldX = mScrollX; 6115 int oldY = mScrollY; 6116 int rangeX = computeMaxScrollX(); 6117 int rangeY = computeMaxScrollY(); 6118 int overscrollDistance = mOverscrollDistance; 6119 6120 // Check for the original scrolling layer in case we change 6121 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6122 // reached the edge of a layer but mScrollingLayer will be non-zero 6123 // if we initiated the drag on a layer. 6124 if (mScrollingLayer != 0) { 6125 final int contentX = viewToContentDimension(deltaX); 6126 final int contentY = viewToContentDimension(deltaY); 6127 6128 // Check the scrolling bounds to see if we will actually do any 6129 // scrolling. The rectangle is in document coordinates. 6130 final int maxX = mScrollingLayerRect.right; 6131 final int maxY = mScrollingLayerRect.bottom; 6132 final int resultX = Math.max(0, 6133 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6134 final int resultY = Math.max(0, 6135 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6136 6137 if (resultX != mScrollingLayerRect.left || 6138 resultY != mScrollingLayerRect.top) { 6139 // In case we switched to dragging the page. 6140 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6141 deltaX = contentX; 6142 deltaY = contentY; 6143 oldX = mScrollingLayerRect.left; 6144 oldY = mScrollingLayerRect.top; 6145 rangeX = maxX; 6146 rangeY = maxY; 6147 } else { 6148 // Scroll the main page if we are not going to scroll the 6149 // layer. This does not reset mScrollingLayer in case the 6150 // user changes directions and the layer can scroll the 6151 // other way. 6152 mTouchMode = TOUCH_DRAG_MODE; 6153 } 6154 } 6155 6156 if (mOverScrollGlow != null) { 6157 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6158 } 6159 6160 overScrollBy(deltaX, deltaY, oldX, oldY, 6161 rangeX, rangeY, 6162 mOverscrollDistance, mOverscrollDistance, true); 6163 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6164 invalidate(); 6165 } 6166 } 6167 mZoomManager.keepZoomPickerVisible(); 6168 } 6169 6170 private void stopTouch() { 6171 // we also use mVelocityTracker == null to tell us that we are 6172 // not "moving around", so we can take the slower/prettier 6173 // mode in the drawing code 6174 if (mVelocityTracker != null) { 6175 mVelocityTracker.recycle(); 6176 mVelocityTracker = null; 6177 } 6178 6179 // Release any pulled glows 6180 if (mOverScrollGlow != null) { 6181 mOverScrollGlow.releaseAll(); 6182 } 6183 } 6184 6185 private void cancelTouch() { 6186 // we also use mVelocityTracker == null to tell us that we are 6187 // not "moving around", so we can take the slower/prettier 6188 // mode in the drawing code 6189 if (mVelocityTracker != null) { 6190 mVelocityTracker.recycle(); 6191 mVelocityTracker = null; 6192 } 6193 6194 if ((mTouchMode == TOUCH_DRAG_MODE 6195 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6196 WebViewCore.resumePriority(); 6197 WebViewCore.resumeUpdatePicture(mWebViewCore); 6198 } 6199 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6200 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6201 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6202 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6203 if (getSettings().supportTouchOnly()) { 6204 removeTouchHighlight(true); 6205 } 6206 mHeldMotionless = MOTIONLESS_TRUE; 6207 mTouchMode = TOUCH_DONE_MODE; 6208 nativeHideCursor(); 6209 } 6210 6211 @Override 6212 public boolean onGenericMotionEvent(MotionEvent event) { 6213 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 6214 switch (event.getAction()) { 6215 case MotionEvent.ACTION_SCROLL: { 6216 final float vscroll; 6217 final float hscroll; 6218 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 6219 vscroll = 0; 6220 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6221 } else { 6222 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6223 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 6224 } 6225 if (hscroll != 0 || vscroll != 0) { 6226 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 6227 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 6228 if (pinScrollBy(hdelta, vdelta, true, 0)) { 6229 return true; 6230 } 6231 } 6232 } 6233 } 6234 } 6235 return super.onGenericMotionEvent(event); 6236 } 6237 6238 private long mTrackballFirstTime = 0; 6239 private long mTrackballLastTime = 0; 6240 private float mTrackballRemainsX = 0.0f; 6241 private float mTrackballRemainsY = 0.0f; 6242 private int mTrackballXMove = 0; 6243 private int mTrackballYMove = 0; 6244 private boolean mSelectingText = false; 6245 private boolean mSelectionStarted = false; 6246 private boolean mExtendSelection = false; 6247 private boolean mDrawSelectionPointer = false; 6248 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6249 private static final int TRACKBALL_TIMEOUT = 200; 6250 private static final int TRACKBALL_WAIT = 100; 6251 private static final int TRACKBALL_SCALE = 400; 6252 private static final int TRACKBALL_SCROLL_COUNT = 5; 6253 private static final int TRACKBALL_MOVE_COUNT = 10; 6254 private static final int TRACKBALL_MULTIPLIER = 3; 6255 private static final int SELECT_CURSOR_OFFSET = 16; 6256 private static final int SELECT_SCROLL = 5; 6257 private int mSelectX = 0; 6258 private int mSelectY = 0; 6259 private boolean mFocusSizeChanged = false; 6260 private boolean mTrackballDown = false; 6261 private long mTrackballUpTime = 0; 6262 private long mLastCursorTime = 0; 6263 private Rect mLastCursorBounds; 6264 6265 // Set by default; BrowserActivity clears to interpret trackball data 6266 // directly for movement. Currently, the framework only passes 6267 // arrow key events, not trackball events, from one child to the next 6268 private boolean mMapTrackballToArrowKeys = true; 6269 6270 public void setMapTrackballToArrowKeys(boolean setMap) { 6271 mMapTrackballToArrowKeys = setMap; 6272 } 6273 6274 void resetTrackballTime() { 6275 mTrackballLastTime = 0; 6276 } 6277 6278 @Override 6279 public boolean onTrackballEvent(MotionEvent ev) { 6280 long time = ev.getEventTime(); 6281 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6282 if (ev.getY() > 0) pageDown(true); 6283 if (ev.getY() < 0) pageUp(true); 6284 return true; 6285 } 6286 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6287 if (mSelectingText) { 6288 return true; // discard press if copy in progress 6289 } 6290 mTrackballDown = true; 6291 if (mNativeClass == 0) { 6292 return false; 6293 } 6294 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 6295 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6296 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6297 nativeSelectBestAt(mLastCursorBounds); 6298 } 6299 if (DebugFlags.WEB_VIEW) { 6300 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6301 + " time=" + time 6302 + " mLastCursorTime=" + mLastCursorTime); 6303 } 6304 if (isInTouchMode()) requestFocusFromTouch(); 6305 return false; // let common code in onKeyDown at it 6306 } 6307 if (ev.getAction() == MotionEvent.ACTION_UP) { 6308 // LONG_PRESS_CENTER is set in common onKeyDown 6309 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6310 mTrackballDown = false; 6311 mTrackballUpTime = time; 6312 if (mSelectingText) { 6313 if (mExtendSelection) { 6314 copySelection(); 6315 selectionDone(); 6316 } else { 6317 mExtendSelection = true; 6318 nativeSetExtendSelection(); 6319 invalidate(); // draw the i-beam instead of the arrow 6320 } 6321 return true; // discard press if copy in progress 6322 } 6323 if (DebugFlags.WEB_VIEW) { 6324 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6325 + " time=" + time 6326 ); 6327 } 6328 return false; // let common code in onKeyUp at it 6329 } 6330 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6331 AccessibilityManager.getInstance(mContext).isEnabled()) { 6332 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6333 return false; 6334 } 6335 if (mTrackballDown) { 6336 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6337 return true; // discard move if trackball is down 6338 } 6339 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6340 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6341 return true; 6342 } 6343 // TODO: alternatively we can do panning as touch does 6344 switchOutDrawHistory(); 6345 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6346 if (DebugFlags.WEB_VIEW) { 6347 Log.v(LOGTAG, "onTrackballEvent time=" 6348 + time + " last=" + mTrackballLastTime); 6349 } 6350 mTrackballFirstTime = time; 6351 mTrackballXMove = mTrackballYMove = 0; 6352 } 6353 mTrackballLastTime = time; 6354 if (DebugFlags.WEB_VIEW) { 6355 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6356 } 6357 mTrackballRemainsX += ev.getX(); 6358 mTrackballRemainsY += ev.getY(); 6359 doTrackball(time, ev.getMetaState()); 6360 return true; 6361 } 6362 6363 void moveSelection(float xRate, float yRate) { 6364 if (mNativeClass == 0) 6365 return; 6366 int width = getViewWidth(); 6367 int height = getViewHeight(); 6368 mSelectX += xRate; 6369 mSelectY += yRate; 6370 int maxX = width + mScrollX; 6371 int maxY = height + mScrollY; 6372 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6373 , mSelectX)); 6374 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6375 , mSelectY)); 6376 if (DebugFlags.WEB_VIEW) { 6377 Log.v(LOGTAG, "moveSelection" 6378 + " mSelectX=" + mSelectX 6379 + " mSelectY=" + mSelectY 6380 + " mScrollX=" + mScrollX 6381 + " mScrollY=" + mScrollY 6382 + " xRate=" + xRate 6383 + " yRate=" + yRate 6384 ); 6385 } 6386 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6387 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6388 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6389 : 0; 6390 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6391 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6392 : 0; 6393 pinScrollBy(scrollX, scrollY, true, 0); 6394 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6395 requestRectangleOnScreen(select); 6396 invalidate(); 6397 } 6398 6399 private int scaleTrackballX(float xRate, int width) { 6400 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6401 int nextXMove = xMove; 6402 if (xMove > 0) { 6403 if (xMove > mTrackballXMove) { 6404 xMove -= mTrackballXMove; 6405 } 6406 } else if (xMove < mTrackballXMove) { 6407 xMove -= mTrackballXMove; 6408 } 6409 mTrackballXMove = nextXMove; 6410 return xMove; 6411 } 6412 6413 private int scaleTrackballY(float yRate, int height) { 6414 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6415 int nextYMove = yMove; 6416 if (yMove > 0) { 6417 if (yMove > mTrackballYMove) { 6418 yMove -= mTrackballYMove; 6419 } 6420 } else if (yMove < mTrackballYMove) { 6421 yMove -= mTrackballYMove; 6422 } 6423 mTrackballYMove = nextYMove; 6424 return yMove; 6425 } 6426 6427 private int keyCodeToSoundsEffect(int keyCode) { 6428 switch(keyCode) { 6429 case KeyEvent.KEYCODE_DPAD_UP: 6430 return SoundEffectConstants.NAVIGATION_UP; 6431 case KeyEvent.KEYCODE_DPAD_RIGHT: 6432 return SoundEffectConstants.NAVIGATION_RIGHT; 6433 case KeyEvent.KEYCODE_DPAD_DOWN: 6434 return SoundEffectConstants.NAVIGATION_DOWN; 6435 case KeyEvent.KEYCODE_DPAD_LEFT: 6436 return SoundEffectConstants.NAVIGATION_LEFT; 6437 } 6438 throw new IllegalArgumentException("keyCode must be one of " + 6439 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6440 "KEYCODE_DPAD_LEFT}."); 6441 } 6442 6443 private void doTrackball(long time, int metaState) { 6444 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6445 if (elapsed == 0) { 6446 elapsed = TRACKBALL_TIMEOUT; 6447 } 6448 float xRate = mTrackballRemainsX * 1000 / elapsed; 6449 float yRate = mTrackballRemainsY * 1000 / elapsed; 6450 int viewWidth = getViewWidth(); 6451 int viewHeight = getViewHeight(); 6452 if (mSelectingText) { 6453 if (!mDrawSelectionPointer) { 6454 // The last selection was made by touch, disabling drawing the 6455 // selection pointer. Allow the trackball to adjust the 6456 // position of the touch control. 6457 mSelectX = contentToViewX(nativeSelectionX()); 6458 mSelectY = contentToViewY(nativeSelectionY()); 6459 mDrawSelectionPointer = mExtendSelection = true; 6460 nativeSetExtendSelection(); 6461 } 6462 moveSelection(scaleTrackballX(xRate, viewWidth), 6463 scaleTrackballY(yRate, viewHeight)); 6464 mTrackballRemainsX = mTrackballRemainsY = 0; 6465 return; 6466 } 6467 float ax = Math.abs(xRate); 6468 float ay = Math.abs(yRate); 6469 float maxA = Math.max(ax, ay); 6470 if (DebugFlags.WEB_VIEW) { 6471 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6472 + " xRate=" + xRate 6473 + " yRate=" + yRate 6474 + " mTrackballRemainsX=" + mTrackballRemainsX 6475 + " mTrackballRemainsY=" + mTrackballRemainsY); 6476 } 6477 int width = mContentWidth - viewWidth; 6478 int height = mContentHeight - viewHeight; 6479 if (width < 0) width = 0; 6480 if (height < 0) height = 0; 6481 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6482 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6483 maxA = Math.max(ax, ay); 6484 int count = Math.max(0, (int) maxA); 6485 int oldScrollX = mScrollX; 6486 int oldScrollY = mScrollY; 6487 if (count > 0) { 6488 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6489 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6490 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6491 KeyEvent.KEYCODE_DPAD_RIGHT; 6492 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6493 if (DebugFlags.WEB_VIEW) { 6494 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6495 + " count=" + count 6496 + " mTrackballRemainsX=" + mTrackballRemainsX 6497 + " mTrackballRemainsY=" + mTrackballRemainsY); 6498 } 6499 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6500 for (int i = 0; i < count; i++) { 6501 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6502 } 6503 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6504 } else if (navHandledKey(selectKeyCode, count, false, time)) { 6505 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 6506 } 6507 mTrackballRemainsX = mTrackballRemainsY = 0; 6508 } 6509 if (count >= TRACKBALL_SCROLL_COUNT) { 6510 int xMove = scaleTrackballX(xRate, width); 6511 int yMove = scaleTrackballY(yRate, height); 6512 if (DebugFlags.WEB_VIEW) { 6513 Log.v(LOGTAG, "doTrackball pinScrollBy" 6514 + " count=" + count 6515 + " xMove=" + xMove + " yMove=" + yMove 6516 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 6517 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 6518 ); 6519 } 6520 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 6521 xMove = 0; 6522 } 6523 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 6524 yMove = 0; 6525 } 6526 if (xMove != 0 || yMove != 0) { 6527 pinScrollBy(xMove, yMove, true, 0); 6528 } 6529 } 6530 } 6531 6532 /** 6533 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 6534 * @return Maximum horizontal scroll position within real content 6535 */ 6536 int computeMaxScrollX() { 6537 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 6538 } 6539 6540 /** 6541 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 6542 * @return Maximum vertical scroll position within real content 6543 */ 6544 int computeMaxScrollY() { 6545 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 6546 - getViewHeightWithTitle(), 0); 6547 } 6548 6549 boolean updateScrollCoordinates(int x, int y) { 6550 int oldX = mScrollX; 6551 int oldY = mScrollY; 6552 mScrollX = x; 6553 mScrollY = y; 6554 if (oldX != mScrollX || oldY != mScrollY) { 6555 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 6556 return true; 6557 } else { 6558 return false; 6559 } 6560 } 6561 6562 public void flingScroll(int vx, int vy) { 6563 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 6564 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 6565 invalidate(); 6566 } 6567 6568 private void doFling() { 6569 if (mVelocityTracker == null) { 6570 return; 6571 } 6572 int maxX = computeMaxScrollX(); 6573 int maxY = computeMaxScrollY(); 6574 6575 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 6576 int vx = (int) mVelocityTracker.getXVelocity(); 6577 int vy = (int) mVelocityTracker.getYVelocity(); 6578 6579 int scrollX = mScrollX; 6580 int scrollY = mScrollY; 6581 int overscrollDistance = mOverscrollDistance; 6582 int overflingDistance = mOverflingDistance; 6583 6584 // Use the layer's scroll data if applicable. 6585 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 6586 scrollX = mScrollingLayerRect.left; 6587 scrollY = mScrollingLayerRect.top; 6588 maxX = mScrollingLayerRect.right; 6589 maxY = mScrollingLayerRect.bottom; 6590 // No overscrolling for layers. 6591 overscrollDistance = overflingDistance = 0; 6592 } 6593 6594 if (mSnapScrollMode != SNAP_NONE) { 6595 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6596 vy = 0; 6597 } else { 6598 vx = 0; 6599 } 6600 } 6601 if (true /* EMG release: make our fling more like Maps' */) { 6602 // maps cuts their velocity in half 6603 vx = vx * 3 / 4; 6604 vy = vy * 3 / 4; 6605 } 6606 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6607 WebViewCore.resumePriority(); 6608 if (!mSelectingText) { 6609 WebViewCore.resumeUpdatePicture(mWebViewCore); 6610 } 6611 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 6612 invalidate(); 6613 } 6614 return; 6615 } 6616 float currentVelocity = mScroller.getCurrVelocity(); 6617 float velocity = (float) Math.hypot(vx, vy); 6618 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6619 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6620 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6621 - Math.atan2(vy, vx))); 6622 final float circle = (float) (Math.PI) * 2.0f; 6623 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6624 vx += currentVelocity * mLastVelX / mLastVelocity; 6625 vy += currentVelocity * mLastVelY / mLastVelocity; 6626 velocity = (float) Math.hypot(vx, vy); 6627 if (DebugFlags.WEB_VIEW) { 6628 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6629 } 6630 } else if (DebugFlags.WEB_VIEW) { 6631 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6632 } 6633 } else if (DebugFlags.WEB_VIEW) { 6634 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6635 + " current=" + currentVelocity 6636 + " vx=" + vx + " vy=" + vy 6637 + " maxX=" + maxX + " maxY=" + maxY 6638 + " scrollX=" + scrollX + " scrollY=" + scrollY 6639 + " layer=" + mScrollingLayer); 6640 } 6641 6642 // Allow sloppy flings without overscrolling at the edges. 6643 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6644 vx = 0; 6645 } 6646 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6647 vy = 0; 6648 } 6649 6650 if (overscrollDistance < overflingDistance) { 6651 if ((vx > 0 && scrollX == -overscrollDistance) || 6652 (vx < 0 && scrollX == maxX + overscrollDistance)) { 6653 vx = 0; 6654 } 6655 if ((vy > 0 && scrollY == -overscrollDistance) || 6656 (vy < 0 && scrollY == maxY + overscrollDistance)) { 6657 vy = 0; 6658 } 6659 } 6660 6661 mLastVelX = vx; 6662 mLastVelY = vy; 6663 mLastVelocity = velocity; 6664 6665 // no horizontal overscroll if the content just fits 6666 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 6667 maxX == 0 ? 0 : overflingDistance, overflingDistance); 6668 // Duration is calculated based on velocity. With range boundaries and overscroll 6669 // we may not know how long the final animation will take. (Hence the deprecation 6670 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6671 // resumes during this effect we will take a performance hit. See computeScroll; 6672 // we resume webcore there when the animation is finished. 6673 final int time = mScroller.getDuration(); 6674 6675 // Suppress scrollbars for layer scrolling. 6676 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6677 awakenScrollBars(time); 6678 } 6679 6680 invalidate(); 6681 } 6682 6683 /** 6684 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6685 * in charge of installing this view to the view hierarchy. This view will 6686 * become visible when the user starts scrolling via touch and fade away if 6687 * the user does not interact with it. 6688 * <p/> 6689 * API version 3 introduces a built-in zoom mechanism that is shown 6690 * automatically by the MapView. This is the preferred approach for 6691 * showing the zoom UI. 6692 * 6693 * @deprecated The built-in zoom mechanism is preferred, see 6694 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6695 */ 6696 @Deprecated 6697 public View getZoomControls() { 6698 if (!getSettings().supportZoom()) { 6699 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6700 return null; 6701 } 6702 return mZoomManager.getExternalZoomPicker(); 6703 } 6704 6705 void dismissZoomControl() { 6706 mZoomManager.dismissZoomPicker(); 6707 } 6708 6709 float getDefaultZoomScale() { 6710 return mZoomManager.getDefaultScale(); 6711 } 6712 6713 /** 6714 * @return TRUE if the WebView can be zoomed in. 6715 */ 6716 public boolean canZoomIn() { 6717 return mZoomManager.canZoomIn(); 6718 } 6719 6720 /** 6721 * @return TRUE if the WebView can be zoomed out. 6722 */ 6723 public boolean canZoomOut() { 6724 return mZoomManager.canZoomOut(); 6725 } 6726 6727 /** 6728 * Perform zoom in in the webview 6729 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6730 */ 6731 public boolean zoomIn() { 6732 return mZoomManager.zoomIn(); 6733 } 6734 6735 /** 6736 * Perform zoom out in the webview 6737 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6738 */ 6739 public boolean zoomOut() { 6740 return mZoomManager.zoomOut(); 6741 } 6742 6743 private void updateSelection() { 6744 if (mNativeClass == 0) { 6745 return; 6746 } 6747 // mLastTouchX and mLastTouchY are the point in the current viewport 6748 int contentX = viewToContentX(mLastTouchX + mScrollX); 6749 int contentY = viewToContentY(mLastTouchY + mScrollY); 6750 int slop = viewToContentDimension(mNavSlop); 6751 Rect rect = new Rect(contentX - slop, contentY - slop, 6752 contentX + slop, contentY + slop); 6753 nativeSelectBestAt(rect); 6754 mInitialHitTestResult = hitTestResult(null); 6755 } 6756 6757 /** 6758 * Scroll the focused text field to match the WebTextView 6759 * @param xPercent New x position of the WebTextView from 0 to 1. 6760 */ 6761 /*package*/ void scrollFocusedTextInputX(float xPercent) { 6762 if (!inEditingMode() || mWebViewCore == null) { 6763 return; 6764 } 6765 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 6766 new Float(xPercent)); 6767 } 6768 6769 /** 6770 * Scroll the focused textarea vertically to match the WebTextView 6771 * @param y New y position of the WebTextView in view coordinates 6772 */ 6773 /* package */ void scrollFocusedTextInputY(int y) { 6774 if (!inEditingMode() || mWebViewCore == null) { 6775 return; 6776 } 6777 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 6778 } 6779 6780 /** 6781 * Set our starting point and time for a drag from the WebTextView. 6782 */ 6783 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6784 if (!inEditingMode()) { 6785 return; 6786 } 6787 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 6788 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 6789 mLastTouchTime = eventTime; 6790 if (!mScroller.isFinished()) { 6791 abortAnimation(); 6792 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6793 } 6794 mSnapScrollMode = SNAP_NONE; 6795 mVelocityTracker = VelocityTracker.obtain(); 6796 mTouchMode = TOUCH_DRAG_START_MODE; 6797 } 6798 6799 /** 6800 * Given a motion event from the WebTextView, set its location to our 6801 * coordinates, and handle the event. 6802 */ 6803 /*package*/ boolean textFieldDrag(MotionEvent event) { 6804 if (!inEditingMode()) { 6805 return false; 6806 } 6807 mDragFromTextInput = true; 6808 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6809 (float) (mWebTextView.getTop() - mScrollY)); 6810 boolean result = onTouchEvent(event); 6811 mDragFromTextInput = false; 6812 return result; 6813 } 6814 6815 /** 6816 * Due a touch up from a WebTextView. This will be handled by webkit to 6817 * change the selection. 6818 * @param event MotionEvent in the WebTextView's coordinates. 6819 */ 6820 /*package*/ void touchUpOnTextField(MotionEvent event) { 6821 if (!inEditingMode()) { 6822 return; 6823 } 6824 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6825 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6826 int slop = viewToContentDimension(mNavSlop); 6827 nativeMotionUp(x, y, slop); 6828 } 6829 6830 /** 6831 * Called when pressing the center key or trackball on a textfield. 6832 */ 6833 /*package*/ void centerKeyPressOnTextField() { 6834 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6835 nativeCursorNodePointer()); 6836 } 6837 6838 private void doShortPress() { 6839 if (mNativeClass == 0) { 6840 return; 6841 } 6842 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6843 return; 6844 } 6845 mTouchMode = TOUCH_DONE_MODE; 6846 switchOutDrawHistory(); 6847 // mLastTouchX and mLastTouchY are the point in the current viewport 6848 int contentX = viewToContentX(mLastTouchX + mScrollX); 6849 int contentY = viewToContentY(mLastTouchY + mScrollY); 6850 int slop = viewToContentDimension(mNavSlop); 6851 if (getSettings().supportTouchOnly()) { 6852 removeTouchHighlight(false); 6853 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6854 // use "0" as generation id to inform WebKit to use the same x/y as 6855 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 6856 touchUpData.mMoveGeneration = 0; 6857 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6858 } else if (nativePointInNavCache(contentX, contentY, slop)) { 6859 WebViewCore.MotionUpData motionUpData = new WebViewCore 6860 .MotionUpData(); 6861 motionUpData.mFrame = nativeCacheHitFramePointer(); 6862 motionUpData.mNode = nativeCacheHitNodePointer(); 6863 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6864 motionUpData.mX = contentX; 6865 motionUpData.mY = contentY; 6866 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6867 motionUpData); 6868 } else { 6869 doMotionUp(contentX, contentY); 6870 } 6871 } 6872 6873 private void doMotionUp(int contentX, int contentY) { 6874 int slop = viewToContentDimension(mNavSlop); 6875 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 6876 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6877 } 6878 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6879 playSoundEffect(SoundEffectConstants.CLICK); 6880 } 6881 } 6882 6883 /** 6884 * Returns plugin bounds if x/y in content coordinates corresponds to a 6885 * plugin. Otherwise a NULL rectangle is returned. 6886 */ 6887 Rect getPluginBounds(int x, int y) { 6888 int slop = viewToContentDimension(mNavSlop); 6889 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 6890 return nativeCacheHitNodeBounds(); 6891 } else { 6892 return null; 6893 } 6894 } 6895 6896 /* 6897 * Return true if the rect (e.g. plugin) is fully visible and maximized 6898 * inside the WebView. 6899 */ 6900 boolean isRectFitOnScreen(Rect rect) { 6901 final int rectWidth = rect.width(); 6902 final int rectHeight = rect.height(); 6903 final int viewWidth = getViewWidth(); 6904 final int viewHeight = getViewHeightWithTitle(); 6905 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 6906 scale = mZoomManager.computeScaleWithLimits(scale); 6907 return !mZoomManager.willScaleTriggerZoom(scale) 6908 && contentToViewX(rect.left) >= mScrollX 6909 && contentToViewX(rect.right) <= mScrollX + viewWidth 6910 && contentToViewY(rect.top) >= mScrollY 6911 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 6912 } 6913 6914 /* 6915 * Maximize and center the rectangle, specified in the document coordinate 6916 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6917 * animated scroll to center it. If the zoom needs to be changed, find the 6918 * zoom center and do a smooth zoom transition. The rect is in document 6919 * coordinates 6920 */ 6921 void centerFitRect(Rect rect) { 6922 final int rectWidth = rect.width(); 6923 final int rectHeight = rect.height(); 6924 final int viewWidth = getViewWidth(); 6925 final int viewHeight = getViewHeightWithTitle(); 6926 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 6927 / rectHeight); 6928 scale = mZoomManager.computeScaleWithLimits(scale); 6929 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6930 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 6931 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 6932 true, 0); 6933 } else { 6934 float actualScale = mZoomManager.getScale(); 6935 float oldScreenX = rect.left * actualScale - mScrollX; 6936 float rectViewX = rect.left * scale; 6937 float rectViewWidth = rectWidth * scale; 6938 float newMaxWidth = mContentWidth * scale; 6939 float newScreenX = (viewWidth - rectViewWidth) / 2; 6940 // pin the newX to the WebView 6941 if (newScreenX > rectViewX) { 6942 newScreenX = rectViewX; 6943 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6944 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6945 } 6946 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6947 / (scale - actualScale); 6948 float oldScreenY = rect.top * actualScale + getTitleHeight() 6949 - mScrollY; 6950 float rectViewY = rect.top * scale + getTitleHeight(); 6951 float rectViewHeight = rectHeight * scale; 6952 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6953 float newScreenY = (viewHeight - rectViewHeight) / 2; 6954 // pin the newY to the WebView 6955 if (newScreenY > rectViewY) { 6956 newScreenY = rectViewY; 6957 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6958 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6959 } 6960 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6961 / (scale - actualScale); 6962 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6963 mZoomManager.startZoomAnimation(scale, false); 6964 } 6965 } 6966 6967 // Called by JNI to handle a touch on a node representing an email address, 6968 // address, or phone number 6969 private void overrideLoading(String url) { 6970 mCallbackProxy.uiOverrideUrlLoading(url); 6971 } 6972 6973 @Override 6974 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6975 // FIXME: If a subwindow is showing find, and the user touches the 6976 // background window, it can steal focus. 6977 if (mFindIsUp) return false; 6978 boolean result = false; 6979 if (inEditingMode()) { 6980 result = mWebTextView.requestFocus(direction, 6981 previouslyFocusedRect); 6982 } else { 6983 result = super.requestFocus(direction, previouslyFocusedRect); 6984 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 6985 // For cases such as GMail, where we gain focus from a direction, 6986 // we want to move to the first available link. 6987 // FIXME: If there are no visible links, we may not want to 6988 int fakeKeyDirection = 0; 6989 switch(direction) { 6990 case View.FOCUS_UP: 6991 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6992 break; 6993 case View.FOCUS_DOWN: 6994 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6995 break; 6996 case View.FOCUS_LEFT: 6997 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6998 break; 6999 case View.FOCUS_RIGHT: 7000 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 7001 break; 7002 default: 7003 return result; 7004 } 7005 if (mNativeClass != 0 && !nativeHasCursorNode()) { 7006 navHandledKey(fakeKeyDirection, 1, true, 0); 7007 } 7008 } 7009 } 7010 return result; 7011 } 7012 7013 @Override 7014 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 7015 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 7016 7017 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7018 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 7019 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7020 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 7021 7022 int measuredHeight = heightSize; 7023 int measuredWidth = widthSize; 7024 7025 // Grab the content size from WebViewCore. 7026 int contentHeight = contentToViewDimension(mContentHeight); 7027 int contentWidth = contentToViewDimension(mContentWidth); 7028 7029// Log.d(LOGTAG, "------- measure " + heightMode); 7030 7031 if (heightMode != MeasureSpec.EXACTLY) { 7032 mHeightCanMeasure = true; 7033 measuredHeight = contentHeight; 7034 if (heightMode == MeasureSpec.AT_MOST) { 7035 // If we are larger than the AT_MOST height, then our height can 7036 // no longer be measured and we should scroll internally. 7037 if (measuredHeight > heightSize) { 7038 measuredHeight = heightSize; 7039 mHeightCanMeasure = false; 7040 } else if (measuredHeight < heightSize) { 7041 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7042 } 7043 } 7044 } else { 7045 mHeightCanMeasure = false; 7046 } 7047 if (mNativeClass != 0) { 7048 nativeSetHeightCanMeasure(mHeightCanMeasure); 7049 } 7050 // For the width, always use the given size unless unspecified. 7051 if (widthMode == MeasureSpec.UNSPECIFIED) { 7052 mWidthCanMeasure = true; 7053 measuredWidth = contentWidth; 7054 } else { 7055 if (measuredWidth < contentWidth) { 7056 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7057 } 7058 mWidthCanMeasure = false; 7059 } 7060 7061 synchronized (this) { 7062 setMeasuredDimension(measuredWidth, measuredHeight); 7063 } 7064 } 7065 7066 @Override 7067 public boolean requestChildRectangleOnScreen(View child, 7068 Rect rect, 7069 boolean immediate) { 7070 if (mNativeClass == 0) { 7071 return false; 7072 } 7073 // don't scroll while in zoom animation. When it is done, we will adjust 7074 // the necessary components (e.g., WebTextView if it is in editing mode) 7075 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7076 return false; 7077 } 7078 7079 rect.offset(child.getLeft() - child.getScrollX(), 7080 child.getTop() - child.getScrollY()); 7081 7082 Rect content = new Rect(viewToContentX(mScrollX), 7083 viewToContentY(mScrollY), 7084 viewToContentX(mScrollX + getWidth() 7085 - getVerticalScrollbarWidth()), 7086 viewToContentY(mScrollY + getViewHeightWithTitle())); 7087 content = nativeSubtractLayers(content); 7088 int screenTop = contentToViewY(content.top); 7089 int screenBottom = contentToViewY(content.bottom); 7090 int height = screenBottom - screenTop; 7091 int scrollYDelta = 0; 7092 7093 if (rect.bottom > screenBottom) { 7094 int oneThirdOfScreenHeight = height / 3; 7095 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7096 // If the rectangle is too tall to fit in the bottom two thirds 7097 // of the screen, place it at the top. 7098 scrollYDelta = rect.top - screenTop; 7099 } else { 7100 // If the rectangle will still fit on screen, we want its 7101 // top to be in the top third of the screen. 7102 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7103 } 7104 } else if (rect.top < screenTop) { 7105 scrollYDelta = rect.top - screenTop; 7106 } 7107 7108 int screenLeft = contentToViewX(content.left); 7109 int screenRight = contentToViewX(content.right); 7110 int width = screenRight - screenLeft; 7111 int scrollXDelta = 0; 7112 7113 if (rect.right > screenRight && rect.left > screenLeft) { 7114 if (rect.width() > width) { 7115 scrollXDelta += (rect.left - screenLeft); 7116 } else { 7117 scrollXDelta += (rect.right - screenRight); 7118 } 7119 } else if (rect.left < screenLeft) { 7120 scrollXDelta -= (screenLeft - rect.left); 7121 } 7122 7123 if ((scrollYDelta | scrollXDelta) != 0) { 7124 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7125 } 7126 7127 return false; 7128 } 7129 7130 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7131 String replace, int newStart, int newEnd) { 7132 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7133 arg.mReplace = replace; 7134 arg.mNewStart = newStart; 7135 arg.mNewEnd = newEnd; 7136 mTextGeneration++; 7137 arg.mTextGeneration = mTextGeneration; 7138 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7139 } 7140 7141 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7142 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7143 arg.mEvent = event; 7144 arg.mCurrentText = currentText; 7145 // Increase our text generation number, and pass it to webcore thread 7146 mTextGeneration++; 7147 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7148 // WebKit's document state is not saved until about to leave the page. 7149 // To make sure the host application, like Browser, has the up to date 7150 // document state when it goes to background, we force to save the 7151 // document state. 7152 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7153 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7154 cursorData(), 1000); 7155 } 7156 7157 /* package */ synchronized WebViewCore getWebViewCore() { 7158 return mWebViewCore; 7159 } 7160 7161 /** 7162 * Used only by TouchEventQueue to store pending touch events. 7163 */ 7164 private static class QueuedTouch { 7165 long mSequence; 7166 MotionEvent mEvent; // Optional 7167 TouchEventData mTed; // Optional 7168 7169 QueuedTouch mNext; 7170 7171 public QueuedTouch set(TouchEventData ted) { 7172 mSequence = ted.mSequence; 7173 mTed = ted; 7174 mEvent = null; 7175 mNext = null; 7176 return this; 7177 } 7178 7179 public QueuedTouch set(MotionEvent ev, long sequence) { 7180 mEvent = MotionEvent.obtain(ev); 7181 mSequence = sequence; 7182 mTed = null; 7183 mNext = null; 7184 return this; 7185 } 7186 7187 public QueuedTouch add(QueuedTouch other) { 7188 if (other.mSequence < mSequence) { 7189 other.mNext = this; 7190 return other; 7191 } 7192 7193 QueuedTouch insertAt = this; 7194 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 7195 insertAt = insertAt.mNext; 7196 } 7197 other.mNext = insertAt.mNext; 7198 insertAt.mNext = other; 7199 return this; 7200 } 7201 } 7202 7203 /** 7204 * WebView handles touch events asynchronously since some events must be passed to WebKit 7205 * for potentially slower processing. TouchEventQueue serializes touch events regardless 7206 * of which path they take to ensure that no events are ever processed out of order 7207 * by WebView. 7208 */ 7209 private class TouchEventQueue { 7210 private long mNextTouchSequence = Long.MIN_VALUE + 1; 7211 private long mLastHandledTouchSequence = Long.MIN_VALUE; 7212 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7213 7214 // Events waiting to be processed. 7215 private QueuedTouch mTouchEventQueue; 7216 7217 // Known events that are waiting on a response before being enqueued. 7218 private QueuedTouch mPreQueue; 7219 7220 // Pool of QueuedTouch objects saved for later use. 7221 private QueuedTouch mQueuedTouchRecycleBin; 7222 private int mQueuedTouchRecycleCount; 7223 7224 private long mLastEventTime = Long.MAX_VALUE; 7225 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 7226 7227 // milliseconds until we abandon hope of getting all of a previous gesture 7228 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 7229 7230 private QueuedTouch obtainQueuedTouch() { 7231 if (mQueuedTouchRecycleBin != null) { 7232 QueuedTouch result = mQueuedTouchRecycleBin; 7233 mQueuedTouchRecycleBin = result.mNext; 7234 mQueuedTouchRecycleCount--; 7235 return result; 7236 } 7237 return new QueuedTouch(); 7238 } 7239 7240 /** 7241 * Allow events with any currently missing sequence numbers to be skipped in processing. 7242 */ 7243 public void ignoreCurrentlyMissingEvents() { 7244 mIgnoreUntilSequence = mNextTouchSequence; 7245 7246 // Run any events we have available and complete, pre-queued or otherwise. 7247 runQueuedAndPreQueuedEvents(); 7248 } 7249 7250 private void runQueuedAndPreQueuedEvents() { 7251 QueuedTouch qd = mPreQueue; 7252 boolean fromPreQueue = true; 7253 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7254 handleQueuedTouch(qd); 7255 QueuedTouch recycleMe = qd; 7256 if (fromPreQueue) { 7257 mPreQueue = qd.mNext; 7258 } else { 7259 mTouchEventQueue = qd.mNext; 7260 } 7261 recycleQueuedTouch(recycleMe); 7262 mLastHandledTouchSequence++; 7263 7264 long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE; 7265 long nextQueued = mTouchEventQueue != null ? 7266 mTouchEventQueue.mSequence : Long.MAX_VALUE; 7267 fromPreQueue = nextPre < nextQueued; 7268 qd = fromPreQueue ? mPreQueue : mTouchEventQueue; 7269 } 7270 } 7271 7272 /** 7273 * Add a TouchEventData to the pre-queue. 7274 * 7275 * An event in the pre-queue is an event that we know about that 7276 * has been sent to webkit, but that we haven't received back and 7277 * enqueued into the normal touch queue yet. If webkit ever times 7278 * out and we need to ignore currently missing events, we'll run 7279 * events from the pre-queue to patch the holes. 7280 * 7281 * @param ted TouchEventData to pre-queue 7282 */ 7283 public void preQueueTouchEventData(TouchEventData ted) { 7284 QueuedTouch newTouch = obtainQueuedTouch().set(ted); 7285 if (mPreQueue == null) { 7286 mPreQueue = newTouch; 7287 } else { 7288 QueuedTouch insertionPoint = mPreQueue; 7289 while (insertionPoint.mNext != null && 7290 insertionPoint.mNext.mSequence < newTouch.mSequence) { 7291 insertionPoint = insertionPoint.mNext; 7292 } 7293 newTouch.mNext = insertionPoint.mNext; 7294 insertionPoint.mNext = newTouch; 7295 } 7296 } 7297 7298 private void recycleQueuedTouch(QueuedTouch qd) { 7299 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 7300 qd.mNext = mQueuedTouchRecycleBin; 7301 mQueuedTouchRecycleBin = qd; 7302 mQueuedTouchRecycleCount++; 7303 } 7304 } 7305 7306 /** 7307 * Reset the touch event queue. This will dump any pending events 7308 * and reset the sequence numbering. 7309 */ 7310 public void reset() { 7311 mNextTouchSequence = Long.MIN_VALUE + 1; 7312 mLastHandledTouchSequence = Long.MIN_VALUE; 7313 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7314 while (mTouchEventQueue != null) { 7315 QueuedTouch recycleMe = mTouchEventQueue; 7316 mTouchEventQueue = mTouchEventQueue.mNext; 7317 recycleQueuedTouch(recycleMe); 7318 } 7319 while (mPreQueue != null) { 7320 QueuedTouch recycleMe = mPreQueue; 7321 mPreQueue = mPreQueue.mNext; 7322 recycleQueuedTouch(recycleMe); 7323 } 7324 } 7325 7326 /** 7327 * Return the next valid sequence number for tagging incoming touch events. 7328 * @return The next touch event sequence number 7329 */ 7330 public long nextTouchSequence() { 7331 return mNextTouchSequence++; 7332 } 7333 7334 /** 7335 * Enqueue a touch event in the form of TouchEventData. 7336 * The sequence number will be read from the mSequence field of the argument. 7337 * 7338 * If the touch event's sequence number is the next in line to be processed, it will 7339 * be handled before this method returns. Any subsequent events that have already 7340 * been queued will also be processed in their proper order. 7341 * 7342 * @param ted Touch data to be processed in order. 7343 * @return true if the event was processed before returning, false if it was just enqueued. 7344 */ 7345 public boolean enqueueTouchEvent(TouchEventData ted) { 7346 // Remove from the pre-queue if present 7347 QueuedTouch preQueue = mPreQueue; 7348 if (preQueue != null) { 7349 // On exiting this block, preQueue is set to the pre-queued QueuedTouch object 7350 // if it was present in the pre-queue, and removed from the pre-queue itself. 7351 if (preQueue.mSequence == ted.mSequence) { 7352 mPreQueue = preQueue.mNext; 7353 } else { 7354 QueuedTouch prev = preQueue; 7355 preQueue = null; 7356 while (prev.mNext != null) { 7357 if (prev.mNext.mSequence == ted.mSequence) { 7358 preQueue = prev.mNext; 7359 prev.mNext = preQueue.mNext; 7360 break; 7361 } else { 7362 prev = prev.mNext; 7363 } 7364 } 7365 } 7366 } 7367 7368 if (ted.mSequence < mLastHandledTouchSequence) { 7369 // Stale event and we already moved on; drop it. (Should not be common.) 7370 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 7371 " received from webcore; ignoring"); 7372 return false; 7373 } 7374 7375 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 7376 return false; 7377 } 7378 7379 // dropStaleGestures above might have fast-forwarded us to 7380 // an event we have already. 7381 runNextQueuedEvents(); 7382 7383 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 7384 if (preQueue != null) { 7385 recycleQueuedTouch(preQueue); 7386 preQueue = null; 7387 } 7388 handleQueuedTouchEventData(ted); 7389 7390 mLastHandledTouchSequence++; 7391 7392 // Do we have any more? Run them if so. 7393 runNextQueuedEvents(); 7394 } else { 7395 // Reuse the pre-queued object if we had it. 7396 QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted); 7397 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7398 } 7399 return true; 7400 } 7401 7402 /** 7403 * Enqueue a touch event in the form of a MotionEvent from the framework. 7404 * 7405 * If the touch event's sequence number is the next in line to be processed, it will 7406 * be handled before this method returns. Any subsequent events that have already 7407 * been queued will also be processed in their proper order. 7408 * 7409 * @param ev MotionEvent to be processed in order 7410 */ 7411 public void enqueueTouchEvent(MotionEvent ev) { 7412 final long sequence = nextTouchSequence(); 7413 7414 if (dropStaleGestures(ev, sequence)) { 7415 return; 7416 } 7417 7418 // dropStaleGestures above might have fast-forwarded us to 7419 // an event we have already. 7420 runNextQueuedEvents(); 7421 7422 if (mLastHandledTouchSequence + 1 == sequence) { 7423 handleQueuedMotionEvent(ev); 7424 7425 mLastHandledTouchSequence++; 7426 7427 // Do we have any more? Run them if so. 7428 runNextQueuedEvents(); 7429 } else { 7430 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 7431 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7432 } 7433 } 7434 7435 private void runNextQueuedEvents() { 7436 QueuedTouch qd = mTouchEventQueue; 7437 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7438 handleQueuedTouch(qd); 7439 QueuedTouch recycleMe = qd; 7440 qd = qd.mNext; 7441 recycleQueuedTouch(recycleMe); 7442 mLastHandledTouchSequence++; 7443 } 7444 mTouchEventQueue = qd; 7445 } 7446 7447 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 7448 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 7449 // This is to make sure that we don't attempt to process a tap 7450 // or long press when webkit takes too long to get back to us. 7451 // The movement will be properly confirmed when we process the 7452 // enqueued event later. 7453 final int dx = Math.round(ev.getX()) - mLastTouchX; 7454 final int dy = Math.round(ev.getY()) - mLastTouchY; 7455 if (dx * dx + dy * dy > mTouchSlopSquare) { 7456 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 7457 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 7458 } 7459 } 7460 7461 if (mTouchEventQueue == null) { 7462 return sequence <= mLastHandledTouchSequence; 7463 } 7464 7465 // If we have a new down event and it's been a while since the last event 7466 // we saw, catch up as best we can and keep going. 7467 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 7468 long eventTime = ev.getEventTime(); 7469 long lastHandledEventTime = mLastEventTime; 7470 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 7471 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 7472 "Catching up."); 7473 runQueuedAndPreQueuedEvents(); 7474 7475 // Drop leftovers that we truly don't have. 7476 QueuedTouch qd = mTouchEventQueue; 7477 while (qd != null && qd.mSequence < sequence) { 7478 QueuedTouch recycleMe = qd; 7479 qd = qd.mNext; 7480 recycleQueuedTouch(recycleMe); 7481 } 7482 mTouchEventQueue = qd; 7483 mLastHandledTouchSequence = sequence - 1; 7484 } 7485 } 7486 7487 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 7488 QueuedTouch qd = mTouchEventQueue; 7489 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 7490 QueuedTouch recycleMe = qd; 7491 qd = qd.mNext; 7492 recycleQueuedTouch(recycleMe); 7493 } 7494 mTouchEventQueue = qd; 7495 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 7496 } 7497 7498 if (mPreQueue != null) { 7499 // Drop stale prequeued events 7500 QueuedTouch qd = mPreQueue; 7501 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 7502 QueuedTouch recycleMe = qd; 7503 qd = qd.mNext; 7504 recycleQueuedTouch(recycleMe); 7505 } 7506 mPreQueue = qd; 7507 } 7508 7509 return sequence <= mLastHandledTouchSequence; 7510 } 7511 7512 private void handleQueuedTouch(QueuedTouch qt) { 7513 if (qt.mTed != null) { 7514 handleQueuedTouchEventData(qt.mTed); 7515 } else { 7516 handleQueuedMotionEvent(qt.mEvent); 7517 qt.mEvent.recycle(); 7518 } 7519 } 7520 7521 private void handleQueuedMotionEvent(MotionEvent ev) { 7522 mLastEventTime = ev.getEventTime(); 7523 int action = ev.getActionMasked(); 7524 if (ev.getPointerCount() > 1) { // Multi-touch 7525 handleMultiTouchInWebView(ev); 7526 } else { 7527 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 7528 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 7529 // ScaleGestureDetector needs a consistent event stream to operate properly. 7530 // It won't take any action with fewer than two pointers, but it needs to 7531 // update internal bookkeeping state. 7532 detector.onTouchEvent(ev); 7533 } 7534 7535 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 7536 } 7537 } 7538 7539 private void handleQueuedTouchEventData(TouchEventData ted) { 7540 if (ted.mMotionEvent != null) { 7541 mLastEventTime = ted.mMotionEvent.getEventTime(); 7542 } 7543 if (!ted.mReprocess) { 7544 if (ted.mAction == MotionEvent.ACTION_DOWN 7545 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7546 // if prevent default is called from WebCore, UI 7547 // will not handle the rest of the touch events any 7548 // more. 7549 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 7550 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7551 } else if (ted.mAction == MotionEvent.ACTION_MOVE 7552 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7553 // the return for the first ACTION_MOVE will decide 7554 // whether UI will handle touch or not. Currently no 7555 // support for alternating prevent default 7556 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 7557 : PREVENT_DEFAULT_NO; 7558 } 7559 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7560 mTouchHighlightRegion.setEmpty(); 7561 } 7562 } else { 7563 if (ted.mPoints.length > 1) { // multi-touch 7564 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 7565 mPreventDefault = PREVENT_DEFAULT_NO; 7566 handleMultiTouchInWebView(ted.mMotionEvent); 7567 } else { 7568 mPreventDefault = PREVENT_DEFAULT_YES; 7569 } 7570 return; 7571 } 7572 7573 // prevent default is not called in WebCore, so the 7574 // message needs to be reprocessed in UI 7575 if (!ted.mNativeResult) { 7576 // Following is for single touch. 7577 switch (ted.mAction) { 7578 case MotionEvent.ACTION_DOWN: 7579 mLastDeferTouchX = ted.mPointsInView[0].x; 7580 mLastDeferTouchY = ted.mPointsInView[0].y; 7581 mDeferTouchMode = TOUCH_INIT_MODE; 7582 break; 7583 case MotionEvent.ACTION_MOVE: { 7584 // no snapping in defer process 7585 int x = ted.mPointsInView[0].x; 7586 int y = ted.mPointsInView[0].y; 7587 7588 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7589 mDeferTouchMode = TOUCH_DRAG_MODE; 7590 mLastDeferTouchX = x; 7591 mLastDeferTouchY = y; 7592 startScrollingLayer(x, y); 7593 startDrag(); 7594 } 7595 int deltaX = pinLocX((int) (mScrollX 7596 + mLastDeferTouchX - x)) 7597 - mScrollX; 7598 int deltaY = pinLocY((int) (mScrollY 7599 + mLastDeferTouchY - y)) 7600 - mScrollY; 7601 doDrag(deltaX, deltaY); 7602 if (deltaX != 0) mLastDeferTouchX = x; 7603 if (deltaY != 0) mLastDeferTouchY = y; 7604 break; 7605 } 7606 case MotionEvent.ACTION_UP: 7607 case MotionEvent.ACTION_CANCEL: 7608 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7609 // no fling in defer process 7610 mScroller.springBack(mScrollX, mScrollY, 0, 7611 computeMaxScrollX(), 0, 7612 computeMaxScrollY()); 7613 invalidate(); 7614 WebViewCore.resumePriority(); 7615 WebViewCore.resumeUpdatePicture(mWebViewCore); 7616 } 7617 mDeferTouchMode = TOUCH_DONE_MODE; 7618 break; 7619 case WebViewCore.ACTION_DOUBLETAP: 7620 // doDoubleTap() needs mLastTouchX/Y as anchor 7621 mLastDeferTouchX = ted.mPointsInView[0].x; 7622 mLastDeferTouchY = ted.mPointsInView[0].y; 7623 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 7624 mDeferTouchMode = TOUCH_DONE_MODE; 7625 break; 7626 case WebViewCore.ACTION_LONGPRESS: 7627 HitTestResult hitTest = getHitTestResult(); 7628 if (hitTest != null && hitTest.mType 7629 != HitTestResult.UNKNOWN_TYPE) { 7630 performLongClick(); 7631 } 7632 mDeferTouchMode = TOUCH_DONE_MODE; 7633 break; 7634 } 7635 } 7636 } 7637 } 7638 } 7639 7640 //------------------------------------------------------------------------- 7641 // Methods can be called from a separate thread, like WebViewCore 7642 // If it needs to call the View system, it has to send message. 7643 //------------------------------------------------------------------------- 7644 7645 /** 7646 * General handler to receive message coming from webkit thread 7647 */ 7648 class PrivateHandler extends Handler { 7649 @Override 7650 public void handleMessage(Message msg) { 7651 // exclude INVAL_RECT_MSG_ID since it is frequently output 7652 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 7653 if (msg.what >= FIRST_PRIVATE_MSG_ID 7654 && msg.what <= LAST_PRIVATE_MSG_ID) { 7655 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 7656 - FIRST_PRIVATE_MSG_ID]); 7657 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 7658 && msg.what <= LAST_PACKAGE_MSG_ID) { 7659 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 7660 - FIRST_PACKAGE_MSG_ID]); 7661 } else { 7662 Log.v(LOGTAG, Integer.toString(msg.what)); 7663 } 7664 } 7665 if (mWebViewCore == null) { 7666 // after WebView's destroy() is called, skip handling messages. 7667 return; 7668 } 7669 switch (msg.what) { 7670 case REMEMBER_PASSWORD: { 7671 mDatabase.setUsernamePassword( 7672 msg.getData().getString("host"), 7673 msg.getData().getString("username"), 7674 msg.getData().getString("password")); 7675 ((Message) msg.obj).sendToTarget(); 7676 break; 7677 } 7678 case NEVER_REMEMBER_PASSWORD: { 7679 mDatabase.setUsernamePassword( 7680 msg.getData().getString("host"), null, null); 7681 ((Message) msg.obj).sendToTarget(); 7682 break; 7683 } 7684 case PREVENT_DEFAULT_TIMEOUT: { 7685 // if timeout happens, cancel it so that it won't block UI 7686 // to continue handling touch events 7687 if ((msg.arg1 == MotionEvent.ACTION_DOWN 7688 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 7689 || (msg.arg1 == MotionEvent.ACTION_MOVE 7690 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 7691 cancelWebCoreTouchEvent( 7692 viewToContentX(mLastTouchX + mScrollX), 7693 viewToContentY(mLastTouchY + mScrollY), 7694 true); 7695 } 7696 break; 7697 } 7698 case SCROLL_SELECT_TEXT: { 7699 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 7700 mSentAutoScrollMessage = false; 7701 break; 7702 } 7703 if (mScrollingLayer == 0) { 7704 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 7705 } else { 7706 mScrollingLayerRect.left += mAutoScrollX; 7707 mScrollingLayerRect.top += mAutoScrollY; 7708 nativeScrollLayer(mScrollingLayer, 7709 mScrollingLayerRect.left, 7710 mScrollingLayerRect.top); 7711 invalidate(); 7712 } 7713 sendEmptyMessageDelayed( 7714 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 7715 break; 7716 } 7717 case SWITCH_TO_SHORTPRESS: { 7718 mInitialHitTestResult = null; // set by updateSelection() 7719 if (mTouchMode == TOUCH_INIT_MODE) { 7720 if (!getSettings().supportTouchOnly() 7721 && mPreventDefault != PREVENT_DEFAULT_YES) { 7722 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 7723 updateSelection(); 7724 } else { 7725 // set to TOUCH_SHORTPRESS_MODE so that it won't 7726 // trigger double tap any more 7727 mTouchMode = TOUCH_SHORTPRESS_MODE; 7728 } 7729 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 7730 mTouchMode = TOUCH_DONE_MODE; 7731 } 7732 break; 7733 } 7734 case SWITCH_TO_LONGPRESS: { 7735 if (getSettings().supportTouchOnly()) { 7736 removeTouchHighlight(false); 7737 } 7738 if (inFullScreenMode() || mDeferTouchProcess) { 7739 TouchEventData ted = new TouchEventData(); 7740 ted.mAction = WebViewCore.ACTION_LONGPRESS; 7741 ted.mIds = new int[1]; 7742 ted.mIds[0] = 0; 7743 ted.mPoints = new Point[1]; 7744 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 7745 viewToContentY(mLastTouchY + mScrollY)); 7746 ted.mPointsInView = new Point[1]; 7747 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 7748 // metaState for long press is tricky. Should it be the 7749 // state when the press started or when the press was 7750 // released? Or some intermediary key state? For 7751 // simplicity for now, we don't set it. 7752 ted.mMetaState = 0; 7753 ted.mReprocess = mDeferTouchProcess; 7754 ted.mNativeLayer = nativeScrollableLayer( 7755 ted.mPoints[0].x, ted.mPoints[0].y, 7756 ted.mNativeLayerRect, null); 7757 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 7758 mTouchEventQueue.preQueueTouchEventData(ted); 7759 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 7760 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 7761 mTouchMode = TOUCH_DONE_MODE; 7762 performLongClick(); 7763 } 7764 break; 7765 } 7766 case RELEASE_SINGLE_TAP: { 7767 doShortPress(); 7768 break; 7769 } 7770 case SCROLL_TO_MSG_ID: { 7771 // arg1 = animate, arg2 = onlyIfImeIsShowing 7772 // obj = Point(x, y) 7773 if (msg.arg2 == 1) { 7774 // This scroll is intended to bring the textfield into 7775 // view, but is only necessary if the IME is showing 7776 InputMethodManager imm = InputMethodManager.peekInstance(); 7777 if (imm == null || !imm.isAcceptingText() 7778 || (!imm.isActive(WebView.this) && (!inEditingMode() 7779 || !imm.isActive(mWebTextView)))) { 7780 break; 7781 } 7782 } 7783 final Point p = (Point) msg.obj; 7784 if (msg.arg1 == 1) { 7785 spawnContentScrollTo(p.x, p.y); 7786 } else { 7787 setContentScrollTo(p.x, p.y); 7788 } 7789 break; 7790 } 7791 case UPDATE_ZOOM_RANGE: { 7792 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 7793 // mScrollX contains the new minPrefWidth 7794 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 7795 break; 7796 } 7797 case REPLACE_BASE_CONTENT: { 7798 nativeReplaceBaseContent(msg.arg1); 7799 break; 7800 } 7801 case NEW_PICTURE_MSG_ID: { 7802 // called for new content 7803 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 7804 WebViewCore.ViewState viewState = draw.mViewState; 7805 boolean isPictureAfterFirstLayout = viewState != null; 7806 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 7807 getSettings().getShowVisualIndicator(), 7808 isPictureAfterFirstLayout); 7809 final Point viewSize = draw.mViewSize; 7810 if (isPictureAfterFirstLayout) { 7811 // Reset the last sent data here since dealing with new page. 7812 mLastWidthSent = 0; 7813 mZoomManager.onFirstLayout(draw); 7814 if (!mDrawHistory) { 7815 // Do not send the scroll event for this particular 7816 // scroll message. Note that a scroll event may 7817 // still be fired if the user scrolls before the 7818 // message can be handled. 7819 mSendScrollEvent = false; 7820 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 7821 mSendScrollEvent = true; 7822 7823 // As we are on a new page, remove the WebTextView. This 7824 // is necessary for page loads driven by webkit, and in 7825 // particular when the user was on a password field, so 7826 // the WebTextView was visible. 7827 clearTextEntry(); 7828 } 7829 } 7830 7831 // We update the layout (i.e. request a layout from the 7832 // view system) if the last view size that we sent to 7833 // WebCore matches the view size of the picture we just 7834 // received in the fixed dimension. 7835 final boolean updateLayout = viewSize.x == mLastWidthSent 7836 && viewSize.y == mLastHeightSent; 7837 // Don't send scroll event for picture coming from webkit, 7838 // since the new picture may cause a scroll event to override 7839 // the saved history scroll position. 7840 mSendScrollEvent = false; 7841 recordNewContentSize(draw.mContentSize.x, 7842 draw.mContentSize.y, updateLayout); 7843 mSendScrollEvent = true; 7844 if (DebugFlags.WEB_VIEW) { 7845 Rect b = draw.mInvalRegion.getBounds(); 7846 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 7847 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 7848 } 7849 invalidateContentRect(draw.mInvalRegion.getBounds()); 7850 7851 if (mPictureListener != null) { 7852 mPictureListener.onNewPicture(WebView.this, capturePicture()); 7853 } 7854 7855 // update the zoom information based on the new picture 7856 mZoomManager.onNewPicture(draw); 7857 7858 if (draw.mFocusSizeChanged && inEditingMode()) { 7859 mFocusSizeChanged = true; 7860 } 7861 if (isPictureAfterFirstLayout) { 7862 mViewManager.postReadyToDrawAll(); 7863 } 7864 break; 7865 } 7866 case WEBCORE_INITIALIZED_MSG_ID: 7867 // nativeCreate sets mNativeClass to a non-zero value 7868 nativeCreate(msg.arg1); 7869 break; 7870 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 7871 // Make sure that the textfield is currently focused 7872 // and representing the same node as the pointer. 7873 if (inEditingMode() && 7874 mWebTextView.isSameTextField(msg.arg1)) { 7875 if (msg.getData().getBoolean("password")) { 7876 Spannable text = (Spannable) mWebTextView.getText(); 7877 int start = Selection.getSelectionStart(text); 7878 int end = Selection.getSelectionEnd(text); 7879 mWebTextView.setInPassword(true); 7880 // Restore the selection, which may have been 7881 // ruined by setInPassword. 7882 Spannable pword = 7883 (Spannable) mWebTextView.getText(); 7884 Selection.setSelection(pword, start, end); 7885 // If the text entry has created more events, ignore 7886 // this one. 7887 } else if (msg.arg2 == mTextGeneration) { 7888 String text = (String) msg.obj; 7889 if (null == text) { 7890 text = ""; 7891 } 7892 mWebTextView.setTextAndKeepSelection(text); 7893 } 7894 } 7895 break; 7896 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 7897 displaySoftKeyboard(true); 7898 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 7899 case UPDATE_TEXT_SELECTION_MSG_ID: 7900 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 7901 (WebViewCore.TextSelectionData) msg.obj); 7902 break; 7903 case FORM_DID_BLUR: 7904 if (inEditingMode() 7905 && mWebTextView.isSameTextField(msg.arg1)) { 7906 hideSoftKeyboard(); 7907 } 7908 break; 7909 case RETURN_LABEL: 7910 if (inEditingMode() 7911 && mWebTextView.isSameTextField(msg.arg1)) { 7912 mWebTextView.setHint((String) msg.obj); 7913 InputMethodManager imm 7914 = InputMethodManager.peekInstance(); 7915 // The hint is propagated to the IME in 7916 // onCreateInputConnection. If the IME is already 7917 // active, restart it so that its hint text is updated. 7918 if (imm != null && imm.isActive(mWebTextView)) { 7919 imm.restartInput(mWebTextView); 7920 } 7921 } 7922 break; 7923 case UNHANDLED_NAV_KEY: 7924 navHandledKey(msg.arg1, 1, false, 0); 7925 break; 7926 case UPDATE_TEXT_ENTRY_MSG_ID: 7927 // this is sent after finishing resize in WebViewCore. Make 7928 // sure the text edit box is still on the screen. 7929 if (inEditingMode() && nativeCursorIsTextInput()) { 7930 rebuildWebTextView(); 7931 } 7932 break; 7933 case CLEAR_TEXT_ENTRY: 7934 clearTextEntry(); 7935 break; 7936 case INVAL_RECT_MSG_ID: { 7937 Rect r = (Rect)msg.obj; 7938 if (r == null) { 7939 invalidate(); 7940 } else { 7941 // we need to scale r from content into view coords, 7942 // which viewInvalidate() does for us 7943 viewInvalidate(r.left, r.top, r.right, r.bottom); 7944 } 7945 break; 7946 } 7947 case REQUEST_FORM_DATA: 7948 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 7949 if (mWebTextView.isSameTextField(msg.arg1)) { 7950 mWebTextView.setAdapterCustom(adapter); 7951 } 7952 break; 7953 case RESUME_WEBCORE_PRIORITY: 7954 WebViewCore.resumePriority(); 7955 WebViewCore.resumeUpdatePicture(mWebViewCore); 7956 break; 7957 7958 case LONG_PRESS_CENTER: 7959 // as this is shared by keydown and trackballdown, reset all 7960 // the states 7961 mGotCenterDown = false; 7962 mTrackballDown = false; 7963 performLongClick(); 7964 break; 7965 7966 case WEBCORE_NEED_TOUCH_EVENTS: 7967 mForwardTouchEvents = (msg.arg1 != 0); 7968 break; 7969 7970 case PREVENT_TOUCH_ID: 7971 if (inFullScreenMode()) { 7972 break; 7973 } 7974 TouchEventData ted = (TouchEventData) msg.obj; 7975 7976 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 7977 // WebCore is responding to us; remove pending timeout. 7978 // It will be re-posted when needed. 7979 removeMessages(PREVENT_DEFAULT_TIMEOUT); 7980 } 7981 break; 7982 7983 case REQUEST_KEYBOARD: 7984 if (msg.arg1 == 0) { 7985 hideSoftKeyboard(); 7986 } else { 7987 displaySoftKeyboard(false); 7988 } 7989 break; 7990 7991 case FIND_AGAIN: 7992 // Ignore if find has been dismissed. 7993 if (mFindIsUp && mFindCallback != null) { 7994 mFindCallback.findAll(); 7995 } 7996 break; 7997 7998 case DRAG_HELD_MOTIONLESS: 7999 mHeldMotionless = MOTIONLESS_TRUE; 8000 invalidate(); 8001 // fall through to keep scrollbars awake 8002 8003 case AWAKEN_SCROLL_BARS: 8004 if (mTouchMode == TOUCH_DRAG_MODE 8005 && mHeldMotionless == MOTIONLESS_TRUE) { 8006 awakenScrollBars(ViewConfiguration 8007 .getScrollDefaultDelay(), false); 8008 mPrivateHandler.sendMessageDelayed(mPrivateHandler 8009 .obtainMessage(AWAKEN_SCROLL_BARS), 8010 ViewConfiguration.getScrollDefaultDelay()); 8011 } 8012 break; 8013 8014 case DO_MOTION_UP: 8015 doMotionUp(msg.arg1, msg.arg2); 8016 break; 8017 8018 case SCREEN_ON: 8019 setKeepScreenOn(msg.arg1 == 1); 8020 break; 8021 8022 case ENTER_FULLSCREEN_VIDEO: 8023 int layerId = msg.arg1; 8024 8025 String url = (String) msg.obj; 8026 if (mHTML5VideoViewProxy != null) { 8027 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 8028 } 8029 break; 8030 8031 case SHOW_FULLSCREEN: { 8032 View view = (View) msg.obj; 8033 int npp = msg.arg1; 8034 8035 if (inFullScreenMode()) { 8036 Log.w(LOGTAG, "Should not have another full screen."); 8037 dismissFullScreenMode(); 8038 } 8039 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 8040 mFullScreenHolder.setContentView(view); 8041 mFullScreenHolder.setCancelable(false); 8042 mFullScreenHolder.setCanceledOnTouchOutside(false); 8043 mFullScreenHolder.show(); 8044 8045 break; 8046 } 8047 case HIDE_FULLSCREEN: 8048 dismissFullScreenMode(); 8049 break; 8050 8051 case DOM_FOCUS_CHANGED: 8052 if (inEditingMode()) { 8053 nativeClearCursor(); 8054 rebuildWebTextView(); 8055 } 8056 break; 8057 8058 case SHOW_RECT_MSG_ID: { 8059 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 8060 int x = mScrollX; 8061 int left = contentToViewX(data.mLeft); 8062 int width = contentToViewDimension(data.mWidth); 8063 int maxWidth = contentToViewDimension(data.mContentWidth); 8064 int viewWidth = getViewWidth(); 8065 if (width < viewWidth) { 8066 // center align 8067 x += left + width / 2 - mScrollX - viewWidth / 2; 8068 } else { 8069 x += (int) (left + data.mXPercentInDoc * width 8070 - mScrollX - data.mXPercentInView * viewWidth); 8071 } 8072 if (DebugFlags.WEB_VIEW) { 8073 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 8074 width + ",maxWidth=" + maxWidth + 8075 ",viewWidth=" + viewWidth + ",x=" 8076 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 8077 ",xPercentInView=" + data.mXPercentInView+ ")"); 8078 } 8079 // use the passing content width to cap x as the current 8080 // mContentWidth may not be updated yet 8081 x = Math.max(0, 8082 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 8083 int top = contentToViewY(data.mTop); 8084 int height = contentToViewDimension(data.mHeight); 8085 int maxHeight = contentToViewDimension(data.mContentHeight); 8086 int viewHeight = getViewHeight(); 8087 int y = (int) (top + data.mYPercentInDoc * height - 8088 data.mYPercentInView * viewHeight); 8089 if (DebugFlags.WEB_VIEW) { 8090 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 8091 height + ",maxHeight=" + maxHeight + 8092 ",viewHeight=" + viewHeight + ",y=" 8093 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 8094 ",yPercentInView=" + data.mYPercentInView+ ")"); 8095 } 8096 // use the passing content height to cap y as the current 8097 // mContentHeight may not be updated yet 8098 y = Math.max(0, 8099 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 8100 // We need to take into account the visible title height 8101 // when scrolling since y is an absolute view position. 8102 y = Math.max(0, y - getVisibleTitleHeight()); 8103 scrollTo(x, y); 8104 } 8105 break; 8106 8107 case CENTER_FIT_RECT: 8108 centerFitRect((Rect)msg.obj); 8109 break; 8110 8111 case SET_SCROLLBAR_MODES: 8112 mHorizontalScrollBarMode = msg.arg1; 8113 mVerticalScrollBarMode = msg.arg2; 8114 break; 8115 8116 case SELECTION_STRING_CHANGED: 8117 if (mAccessibilityInjector != null) { 8118 String selectionString = (String) msg.obj; 8119 mAccessibilityInjector.onSelectionStringChange(selectionString); 8120 } 8121 break; 8122 8123 case SET_TOUCH_HIGHLIGHT_RECTS: 8124 invalidate(mTouchHighlightRegion.getBounds()); 8125 mTouchHighlightRegion.setEmpty(); 8126 if (msg.obj != null) { 8127 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 8128 for (Rect rect : rects) { 8129 Rect viewRect = contentToViewRect(rect); 8130 // some sites, like stories in nytimes.com, set 8131 // mouse event handler in the top div. It is not 8132 // user friendly to highlight the div if it covers 8133 // more than half of the screen. 8134 if (viewRect.width() < getWidth() >> 1 8135 || viewRect.height() < getHeight() >> 1) { 8136 mTouchHighlightRegion.union(viewRect); 8137 invalidate(viewRect); 8138 } else { 8139 Log.w(LOGTAG, "Skip the huge selection rect:" 8140 + viewRect); 8141 } 8142 } 8143 } 8144 break; 8145 8146 case SAVE_WEBARCHIVE_FINISHED: 8147 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 8148 if (saveMessage.mCallback != null) { 8149 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 8150 } 8151 break; 8152 8153 case SET_AUTOFILLABLE: 8154 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 8155 if (mWebTextView != null) { 8156 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 8157 rebuildWebTextView(); 8158 } 8159 break; 8160 8161 case AUTOFILL_COMPLETE: 8162 if (mWebTextView != null) { 8163 // Clear the WebTextView adapter when AutoFill finishes 8164 // so that the drop down gets cleared. 8165 mWebTextView.setAdapterCustom(null); 8166 } 8167 break; 8168 8169 case SELECT_AT: 8170 nativeSelectAt(msg.arg1, msg.arg2); 8171 break; 8172 8173 default: 8174 super.handleMessage(msg); 8175 break; 8176 } 8177 } 8178 } 8179 8180 /** 8181 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 8182 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 8183 */ 8184 private void updateTextSelectionFromMessage(int nodePointer, 8185 int textGeneration, WebViewCore.TextSelectionData data) { 8186 if (inEditingMode() 8187 && mWebTextView.isSameTextField(nodePointer) 8188 && textGeneration == mTextGeneration) { 8189 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 8190 } 8191 } 8192 8193 // Class used to use a dropdown for a <select> element 8194 private class InvokeListBox implements Runnable { 8195 // Whether the listbox allows multiple selection. 8196 private boolean mMultiple; 8197 // Passed in to a list with multiple selection to tell 8198 // which items are selected. 8199 private int[] mSelectedArray; 8200 // Passed in to a list with single selection to tell 8201 // where the initial selection is. 8202 private int mSelection; 8203 8204 private Container[] mContainers; 8205 8206 // Need these to provide stable ids to my ArrayAdapter, 8207 // which normally does not have stable ids. (Bug 1250098) 8208 private class Container extends Object { 8209 /** 8210 * Possible values for mEnabled. Keep in sync with OptionStatus in 8211 * WebViewCore.cpp 8212 */ 8213 final static int OPTGROUP = -1; 8214 final static int OPTION_DISABLED = 0; 8215 final static int OPTION_ENABLED = 1; 8216 8217 String mString; 8218 int mEnabled; 8219 int mId; 8220 8221 @Override 8222 public String toString() { 8223 return mString; 8224 } 8225 } 8226 8227 /** 8228 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 8229 * and allow filtering. 8230 */ 8231 private class MyArrayListAdapter extends ArrayAdapter<Container> { 8232 public MyArrayListAdapter() { 8233 super(mContext, 8234 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 8235 com.android.internal.R.layout.webview_select_singlechoice, 8236 mContainers); 8237 } 8238 8239 @Override 8240 public View getView(int position, View convertView, 8241 ViewGroup parent) { 8242 // Always pass in null so that we will get a new CheckedTextView 8243 // Otherwise, an item which was previously used as an <optgroup> 8244 // element (i.e. has no check), could get used as an <option> 8245 // element, which needs a checkbox/radio, but it would not have 8246 // one. 8247 convertView = super.getView(position, null, parent); 8248 Container c = item(position); 8249 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 8250 // ListView does not draw dividers between disabled and 8251 // enabled elements. Use a LinearLayout to provide dividers 8252 LinearLayout layout = new LinearLayout(mContext); 8253 layout.setOrientation(LinearLayout.VERTICAL); 8254 if (position > 0) { 8255 View dividerTop = new View(mContext); 8256 dividerTop.setBackgroundResource( 8257 android.R.drawable.divider_horizontal_bright); 8258 layout.addView(dividerTop); 8259 } 8260 8261 if (Container.OPTGROUP == c.mEnabled) { 8262 // Currently select_dialog_multichoice uses CheckedTextViews. 8263 // If that changes, the class cast will no longer be valid. 8264 if (mMultiple) { 8265 Assert.assertTrue(convertView instanceof CheckedTextView); 8266 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 8267 } 8268 } else { 8269 // c.mEnabled == Container.OPTION_DISABLED 8270 // Draw the disabled element in a disabled state. 8271 convertView.setEnabled(false); 8272 } 8273 8274 layout.addView(convertView); 8275 if (position < getCount() - 1) { 8276 View dividerBottom = new View(mContext); 8277 dividerBottom.setBackgroundResource( 8278 android.R.drawable.divider_horizontal_bright); 8279 layout.addView(dividerBottom); 8280 } 8281 return layout; 8282 } 8283 return convertView; 8284 } 8285 8286 @Override 8287 public boolean hasStableIds() { 8288 // AdapterView's onChanged method uses this to determine whether 8289 // to restore the old state. Return false so that the old (out 8290 // of date) state does not replace the new, valid state. 8291 return false; 8292 } 8293 8294 private Container item(int position) { 8295 if (position < 0 || position >= getCount()) { 8296 return null; 8297 } 8298 return (Container) getItem(position); 8299 } 8300 8301 @Override 8302 public long getItemId(int position) { 8303 Container item = item(position); 8304 if (item == null) { 8305 return -1; 8306 } 8307 return item.mId; 8308 } 8309 8310 @Override 8311 public boolean areAllItemsEnabled() { 8312 return false; 8313 } 8314 8315 @Override 8316 public boolean isEnabled(int position) { 8317 Container item = item(position); 8318 if (item == null) { 8319 return false; 8320 } 8321 return Container.OPTION_ENABLED == item.mEnabled; 8322 } 8323 } 8324 8325 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 8326 mMultiple = true; 8327 mSelectedArray = selected; 8328 8329 int length = array.length; 8330 mContainers = new Container[length]; 8331 for (int i = 0; i < length; i++) { 8332 mContainers[i] = new Container(); 8333 mContainers[i].mString = array[i]; 8334 mContainers[i].mEnabled = enabled[i]; 8335 mContainers[i].mId = i; 8336 } 8337 } 8338 8339 private InvokeListBox(String[] array, int[] enabled, int selection) { 8340 mSelection = selection; 8341 mMultiple = false; 8342 8343 int length = array.length; 8344 mContainers = new Container[length]; 8345 for (int i = 0; i < length; i++) { 8346 mContainers[i] = new Container(); 8347 mContainers[i].mString = array[i]; 8348 mContainers[i].mEnabled = enabled[i]; 8349 mContainers[i].mId = i; 8350 } 8351 } 8352 8353 /* 8354 * Whenever the data set changes due to filtering, this class ensures 8355 * that the checked item remains checked. 8356 */ 8357 private class SingleDataSetObserver extends DataSetObserver { 8358 private long mCheckedId; 8359 private ListView mListView; 8360 private Adapter mAdapter; 8361 8362 /* 8363 * Create a new observer. 8364 * @param id The ID of the item to keep checked. 8365 * @param l ListView for getting and clearing the checked states 8366 * @param a Adapter for getting the IDs 8367 */ 8368 public SingleDataSetObserver(long id, ListView l, Adapter a) { 8369 mCheckedId = id; 8370 mListView = l; 8371 mAdapter = a; 8372 } 8373 8374 @Override 8375 public void onChanged() { 8376 // The filter may have changed which item is checked. Find the 8377 // item that the ListView thinks is checked. 8378 int position = mListView.getCheckedItemPosition(); 8379 long id = mAdapter.getItemId(position); 8380 if (mCheckedId != id) { 8381 // Clear the ListView's idea of the checked item, since 8382 // it is incorrect 8383 mListView.clearChoices(); 8384 // Search for mCheckedId. If it is in the filtered list, 8385 // mark it as checked 8386 int count = mAdapter.getCount(); 8387 for (int i = 0; i < count; i++) { 8388 if (mAdapter.getItemId(i) == mCheckedId) { 8389 mListView.setItemChecked(i, true); 8390 break; 8391 } 8392 } 8393 } 8394 } 8395 } 8396 8397 public void run() { 8398 final ListView listView = (ListView) LayoutInflater.from(mContext) 8399 .inflate(com.android.internal.R.layout.select_dialog, null); 8400 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 8401 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 8402 .setView(listView).setCancelable(true) 8403 .setInverseBackgroundForced(true); 8404 8405 if (mMultiple) { 8406 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 8407 public void onClick(DialogInterface dialog, int which) { 8408 mWebViewCore.sendMessage( 8409 EventHub.LISTBOX_CHOICES, 8410 adapter.getCount(), 0, 8411 listView.getCheckedItemPositions()); 8412 }}); 8413 b.setNegativeButton(android.R.string.cancel, 8414 new DialogInterface.OnClickListener() { 8415 public void onClick(DialogInterface dialog, int which) { 8416 mWebViewCore.sendMessage( 8417 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8418 }}); 8419 } 8420 mListBoxDialog = b.create(); 8421 listView.setAdapter(adapter); 8422 listView.setFocusableInTouchMode(true); 8423 // There is a bug (1250103) where the checks in a ListView with 8424 // multiple items selected are associated with the positions, not 8425 // the ids, so the items do not properly retain their checks when 8426 // filtered. Do not allow filtering on multiple lists until 8427 // that bug is fixed. 8428 8429 listView.setTextFilterEnabled(!mMultiple); 8430 if (mMultiple) { 8431 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 8432 int length = mSelectedArray.length; 8433 for (int i = 0; i < length; i++) { 8434 listView.setItemChecked(mSelectedArray[i], true); 8435 } 8436 } else { 8437 listView.setOnItemClickListener(new OnItemClickListener() { 8438 public void onItemClick(AdapterView<?> parent, View v, 8439 int position, long id) { 8440 // Rather than sending the message right away, send it 8441 // after the page regains focus. 8442 mListBoxMessage = Message.obtain(null, 8443 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 8444 mListBoxDialog.dismiss(); 8445 mListBoxDialog = null; 8446 } 8447 }); 8448 if (mSelection != -1) { 8449 listView.setSelection(mSelection); 8450 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 8451 listView.setItemChecked(mSelection, true); 8452 DataSetObserver observer = new SingleDataSetObserver( 8453 adapter.getItemId(mSelection), listView, adapter); 8454 adapter.registerDataSetObserver(observer); 8455 } 8456 } 8457 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 8458 public void onCancel(DialogInterface dialog) { 8459 mWebViewCore.sendMessage( 8460 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8461 mListBoxDialog = null; 8462 } 8463 }); 8464 mListBoxDialog.show(); 8465 } 8466 } 8467 8468 private Message mListBoxMessage; 8469 8470 /* 8471 * Request a dropdown menu for a listbox with multiple selection. 8472 * 8473 * @param array Labels for the listbox. 8474 * @param enabledArray State for each element in the list. See static 8475 * integers in Container class. 8476 * @param selectedArray Which positions are initally selected. 8477 */ 8478 void requestListBox(String[] array, int[] enabledArray, int[] 8479 selectedArray) { 8480 mPrivateHandler.post( 8481 new InvokeListBox(array, enabledArray, selectedArray)); 8482 } 8483 8484 /* 8485 * Request a dropdown menu for a listbox with single selection or a single 8486 * <select> element. 8487 * 8488 * @param array Labels for the listbox. 8489 * @param enabledArray State for each element in the list. See static 8490 * integers in Container class. 8491 * @param selection Which position is initally selected. 8492 */ 8493 void requestListBox(String[] array, int[] enabledArray, int selection) { 8494 mPrivateHandler.post( 8495 new InvokeListBox(array, enabledArray, selection)); 8496 } 8497 8498 // called by JNI 8499 private void sendMoveFocus(int frame, int node) { 8500 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 8501 new WebViewCore.CursorData(frame, node, 0, 0)); 8502 } 8503 8504 // called by JNI 8505 private void sendMoveMouse(int frame, int node, int x, int y) { 8506 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 8507 new WebViewCore.CursorData(frame, node, x, y)); 8508 } 8509 8510 /* 8511 * Send a mouse move event to the webcore thread. 8512 * 8513 * @param removeFocus Pass true to remove the WebTextView, if present. 8514 * @param stopPaintingCaret Stop drawing the blinking caret if true. 8515 * called by JNI 8516 */ 8517 @SuppressWarnings("unused") 8518 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 8519 if (removeFocus) { 8520 clearTextEntry(); 8521 } 8522 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 8523 stopPaintingCaret ? 1 : 0, 0, 8524 cursorData()); 8525 } 8526 8527 /** 8528 * Called by JNI to send a message to the webcore thread that the user 8529 * touched the webpage. 8530 * @param touchGeneration Generation number of the touch, to ignore touches 8531 * after a new one has been generated. 8532 * @param frame Pointer to the frame holding the node that was touched. 8533 * @param node Pointer to the node touched. 8534 * @param x x-position of the touch. 8535 * @param y y-position of the touch. 8536 */ 8537 private void sendMotionUp(int touchGeneration, 8538 int frame, int node, int x, int y) { 8539 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 8540 touchUpData.mMoveGeneration = touchGeneration; 8541 touchUpData.mFrame = frame; 8542 touchUpData.mNode = node; 8543 touchUpData.mX = x; 8544 touchUpData.mY = y; 8545 touchUpData.mNativeLayer = nativeScrollableLayer( 8546 x, y, touchUpData.mNativeLayerRect, null); 8547 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 8548 } 8549 8550 8551 private int getScaledMaxXScroll() { 8552 int width; 8553 if (mHeightCanMeasure == false) { 8554 width = getViewWidth() / 4; 8555 } else { 8556 Rect visRect = new Rect(); 8557 calcOurVisibleRect(visRect); 8558 width = visRect.width() / 2; 8559 } 8560 // FIXME the divisor should be retrieved from somewhere 8561 return viewToContentX(width); 8562 } 8563 8564 private int getScaledMaxYScroll() { 8565 int height; 8566 if (mHeightCanMeasure == false) { 8567 height = getViewHeight() / 4; 8568 } else { 8569 Rect visRect = new Rect(); 8570 calcOurVisibleRect(visRect); 8571 height = visRect.height() / 2; 8572 } 8573 // FIXME the divisor should be retrieved from somewhere 8574 // the closest thing today is hard-coded into ScrollView.java 8575 // (from ScrollView.java, line 363) int maxJump = height/2; 8576 return Math.round(height * mZoomManager.getInvScale()); 8577 } 8578 8579 /** 8580 * Called by JNI to invalidate view 8581 */ 8582 private void viewInvalidate() { 8583 invalidate(); 8584 } 8585 8586 /** 8587 * Pass the key directly to the page. This assumes that 8588 * nativePageShouldHandleShiftAndArrows() returned true. 8589 */ 8590 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 8591 int keyEventAction; 8592 int eventHubAction; 8593 if (down) { 8594 keyEventAction = KeyEvent.ACTION_DOWN; 8595 eventHubAction = EventHub.KEY_DOWN; 8596 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 8597 } else { 8598 keyEventAction = KeyEvent.ACTION_UP; 8599 eventHubAction = EventHub.KEY_UP; 8600 } 8601 8602 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 8603 1, (metaState & KeyEvent.META_SHIFT_ON) 8604 | (metaState & KeyEvent.META_ALT_ON) 8605 | (metaState & KeyEvent.META_SYM_ON) 8606 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 8607 mWebViewCore.sendMessage(eventHubAction, event); 8608 } 8609 8610 // return true if the key was handled 8611 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 8612 long time) { 8613 if (mNativeClass == 0) { 8614 return false; 8615 } 8616 mInitialHitTestResult = null; 8617 mLastCursorTime = time; 8618 mLastCursorBounds = nativeGetCursorRingBounds(); 8619 boolean keyHandled 8620 = nativeMoveCursor(keyCode, count, noScroll) == false; 8621 if (DebugFlags.WEB_VIEW) { 8622 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 8623 + " mLastCursorTime=" + mLastCursorTime 8624 + " handled=" + keyHandled); 8625 } 8626 if (keyHandled == false) { 8627 return keyHandled; 8628 } 8629 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 8630 if (contentCursorRingBounds.isEmpty()) return keyHandled; 8631 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 8632 // set last touch so that context menu related functions will work 8633 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 8634 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 8635 if (mHeightCanMeasure == false) { 8636 return keyHandled; 8637 } 8638 Rect visRect = new Rect(); 8639 calcOurVisibleRect(visRect); 8640 Rect outset = new Rect(visRect); 8641 int maxXScroll = visRect.width() / 2; 8642 int maxYScroll = visRect.height() / 2; 8643 outset.inset(-maxXScroll, -maxYScroll); 8644 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 8645 return keyHandled; 8646 } 8647 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 8648 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 8649 maxXScroll); 8650 if (maxH > 0) { 8651 pinScrollBy(maxH, 0, true, 0); 8652 } else { 8653 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 8654 -maxXScroll); 8655 if (maxH < 0) { 8656 pinScrollBy(maxH, 0, true, 0); 8657 } 8658 } 8659 if (mLastCursorBounds.isEmpty()) return keyHandled; 8660 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 8661 return keyHandled; 8662 } 8663 if (DebugFlags.WEB_VIEW) { 8664 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 8665 + contentCursorRingBounds); 8666 } 8667 requestRectangleOnScreen(viewCursorRingBounds); 8668 return keyHandled; 8669 } 8670 8671 /** 8672 * @return Whether accessibility script has been injected. 8673 */ 8674 private boolean accessibilityScriptInjected() { 8675 // TODO: Maybe the injected script should announce its presence in 8676 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 8677 // will check that as one of the conditions it looks for 8678 return mAccessibilityScriptInjected; 8679 } 8680 8681 /** 8682 * Set the background color. It's white by default. Pass 8683 * zero to make the view transparent. 8684 * @param color the ARGB color described by Color.java 8685 */ 8686 @Override 8687 public void setBackgroundColor(int color) { 8688 mBackgroundColor = color; 8689 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 8690 } 8691 8692 /** 8693 * @deprecated This method is now obsolete. 8694 */ 8695 @Deprecated 8696 public void debugDump() { 8697 nativeDebugDump(); 8698 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 8699 } 8700 8701 /** 8702 * Draw the HTML page into the specified canvas. This call ignores any 8703 * view-specific zoom, scroll offset, or other changes. It does not draw 8704 * any view-specific chrome, such as progress or URL bars. 8705 * 8706 * @hide only needs to be accessible to Browser and testing 8707 */ 8708 public void drawPage(Canvas canvas) { 8709 nativeDraw(canvas, 0, 0, false); 8710 } 8711 8712 /** 8713 * Enable the communication b/t the webView and VideoViewProxy 8714 * 8715 * @hide only used by the Browser 8716 */ 8717 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 8718 mHTML5VideoViewProxy = proxy; 8719 } 8720 8721 /** 8722 * Enable expanded tiles bound for smoother scrolling. 8723 * 8724 * @hide only used by the Browser 8725 */ 8726 public void setExpandedTileBounds(boolean enabled) { 8727 nativeSetExpandedTileBounds(enabled); 8728 } 8729 8730 /** 8731 * Set the time to wait between passing touches to WebCore. See also the 8732 * TOUCH_SENT_INTERVAL member for further discussion. 8733 * 8734 * @hide This is only used by the DRT test application. 8735 */ 8736 public void setTouchInterval(int interval) { 8737 mCurrentTouchInterval = interval; 8738 } 8739 8740 /** 8741 * Update our cache with updatedText. 8742 * @param updatedText The new text to put in our cache. 8743 */ 8744 /* package */ void updateCachedTextfield(String updatedText) { 8745 // Also place our generation number so that when we look at the cache 8746 // we recognize that it is up to date. 8747 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 8748 } 8749 8750 /*package*/ void autoFillForm(int autoFillQueryId) { 8751 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 8752 } 8753 8754 /* package */ ViewManager getViewManager() { 8755 return mViewManager; 8756 } 8757 8758 private native int nativeCacheHitFramePointer(); 8759 private native boolean nativeCacheHitIsPlugin(); 8760 private native Rect nativeCacheHitNodeBounds(); 8761 private native int nativeCacheHitNodePointer(); 8762 /* package */ native void nativeClearCursor(); 8763 private native void nativeCreate(int ptr); 8764 private native int nativeCursorFramePointer(); 8765 private native Rect nativeCursorNodeBounds(); 8766 private native int nativeCursorNodePointer(); 8767 private native boolean nativeCursorIntersects(Rect visibleRect); 8768 private native boolean nativeCursorIsAnchor(); 8769 private native boolean nativeCursorIsTextInput(); 8770 private native Point nativeCursorPosition(); 8771 private native String nativeCursorText(); 8772 /** 8773 * Returns true if the native cursor node says it wants to handle key events 8774 * (ala plugins). This can only be called if mNativeClass is non-zero! 8775 */ 8776 private native boolean nativeCursorWantsKeyEvents(); 8777 private native void nativeDebugDump(); 8778 private native void nativeDestroy(); 8779 8780 /** 8781 * Draw the picture set with a background color and extra. If 8782 * "splitIfNeeded" is true and the return value is not 0, the return value 8783 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 8784 * native allocation can be freed. 8785 */ 8786 private native int nativeDraw(Canvas canvas, int color, int extra, 8787 boolean splitIfNeeded); 8788 private native void nativeDumpDisplayTree(String urlOrNull); 8789 private native boolean nativeEvaluateLayersAnimations(); 8790 private native int nativeGetDrawGLFunction(Rect rect, Rect viewRect, 8791 float scale, int extras); 8792 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect); 8793 private native void nativeExtendSelection(int x, int y); 8794 private native int nativeFindAll(String findLower, String findUpper, 8795 boolean sameAsLastSearch); 8796 private native void nativeFindNext(boolean forward); 8797 /* package */ native int nativeFocusCandidateFramePointer(); 8798 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 8799 /* package */ native boolean nativeFocusCandidateIsPassword(); 8800 private native boolean nativeFocusCandidateIsRtlText(); 8801 private native boolean nativeFocusCandidateIsTextInput(); 8802 /* package */ native int nativeFocusCandidateMaxLength(); 8803 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 8804 /* package */ native String nativeFocusCandidateName(); 8805 private native Rect nativeFocusCandidateNodeBounds(); 8806 /** 8807 * @return A Rect with left, top, right, bottom set to the corresponding 8808 * padding values in the focus candidate, if it is a textfield/textarea with 8809 * a style. Otherwise return null. This is not actually a rectangle; Rect 8810 * is being used to pass four integers. 8811 */ 8812 private native Rect nativeFocusCandidatePaddingRect(); 8813 /* package */ native int nativeFocusCandidatePointer(); 8814 private native String nativeFocusCandidateText(); 8815 /* package */ native float nativeFocusCandidateTextSize(); 8816 /* package */ native int nativeFocusCandidateLineHeight(); 8817 /** 8818 * Returns an integer corresponding to WebView.cpp::type. 8819 * See WebTextView.setType() 8820 */ 8821 private native int nativeFocusCandidateType(); 8822 private native boolean nativeFocusIsPlugin(); 8823 private native Rect nativeFocusNodeBounds(); 8824 /* package */ native int nativeFocusNodePointer(); 8825 private native Rect nativeGetCursorRingBounds(); 8826 private native String nativeGetSelection(); 8827 private native boolean nativeHasCursorNode(); 8828 private native boolean nativeHasFocusNode(); 8829 private native void nativeHideCursor(); 8830 private native boolean nativeHitSelection(int x, int y); 8831 private native String nativeImageURI(int x, int y); 8832 private native void nativeInstrumentReport(); 8833 private native Rect nativeLayerBounds(int layer); 8834 /* package */ native boolean nativeMoveCursorToNextTextInput(); 8835 // return true if the page has been scrolled 8836 private native boolean nativeMotionUp(int x, int y, int slop); 8837 // returns false if it handled the key 8838 private native boolean nativeMoveCursor(int keyCode, int count, 8839 boolean noScroll); 8840 private native int nativeMoveGeneration(); 8841 private native void nativeMoveSelection(int x, int y); 8842 /** 8843 * @return true if the page should get the shift and arrow keys, rather 8844 * than select text/navigation. 8845 * 8846 * If the focus is a plugin, or if the focus and cursor match and are 8847 * a contentEditable element, then the page should handle these keys. 8848 */ 8849 private native boolean nativePageShouldHandleShiftAndArrows(); 8850 private native boolean nativePointInNavCache(int x, int y, int slop); 8851 // Like many other of our native methods, you must make sure that 8852 // mNativeClass is not null before calling this method. 8853 private native void nativeRecordButtons(boolean focused, 8854 boolean pressed, boolean invalidate); 8855 private native void nativeResetSelection(); 8856 private native Point nativeSelectableText(); 8857 private native void nativeSelectAll(); 8858 private native void nativeSelectBestAt(Rect rect); 8859 private native void nativeSelectAt(int x, int y); 8860 private native int nativeSelectionX(); 8861 private native int nativeSelectionY(); 8862 private native int nativeFindIndex(); 8863 private native void nativeSetExtendSelection(); 8864 private native void nativeSetFindIsEmpty(); 8865 private native void nativeSetFindIsUp(boolean isUp); 8866 private native void nativeSetHeightCanMeasure(boolean measure); 8867 private native void nativeSetBaseLayer(int layer, Region invalRegion, 8868 boolean showVisualIndicator, boolean isPictureAfterFirstLayout); 8869 private native void nativeShowCursorTimed(); 8870 private native void nativeReplaceBaseContent(int content); 8871 private native void nativeCopyBaseContentToPicture(Picture pict); 8872 private native boolean nativeHasContent(); 8873 private native void nativeSetSelectionPointer(boolean set, 8874 float scale, int x, int y); 8875 private native boolean nativeStartSelection(int x, int y); 8876 private native void nativeStopGL(); 8877 private native Rect nativeSubtractLayers(Rect content); 8878 private native int nativeTextGeneration(); 8879 // Never call this version except by updateCachedTextfield(String) - 8880 // we always want to pass in our generation number. 8881 private native void nativeUpdateCachedTextfield(String updatedText, 8882 int generation); 8883 private native boolean nativeWordSelection(int x, int y); 8884 // return NO_LEFTEDGE means failure. 8885 static final int NO_LEFTEDGE = -1; 8886 native int nativeGetBlockLeftEdge(int x, int y, float scale); 8887 8888 private native void nativeSetExpandedTileBounds(boolean enabled); 8889 8890 // Returns a pointer to the scrollable LayerAndroid at the given point. 8891 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 8892 Rect scrollBounds); 8893 /** 8894 * Scroll the specified layer. 8895 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 8896 * @param newX Destination x position to which to scroll. 8897 * @param newY Destination y position to which to scroll. 8898 * @return True if the layer is successfully scrolled. 8899 */ 8900 private native boolean nativeScrollLayer(int layer, int newX, int newY); 8901} 8902