WebView.java revision f2674c1a2c93e8cf5b44608e8d7fd62669187aa4
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 mScrollX = sx; 1676 mScrollY = sy; 1677 mZoomManager.restoreZoomState(b); 1678 final float scale = mZoomManager.getScale(); 1679 mHistoryWidth = Math.round(p.getWidth() * scale); 1680 mHistoryHeight = Math.round(p.getHeight() * scale); 1681 1682 invalidate(); 1683 } 1684 1685 /** 1686 * Restore the display data that was save in {@link #savePicture}. Used in 1687 * conjunction with {@link #restoreState}. 1688 * @param b A Bundle containing the saved display data. 1689 * @param src The file where the picture data was stored. 1690 * @return True if the picture was successfully restored. 1691 * @deprecated This method is now obsolete. 1692 */ 1693 @Deprecated 1694 public boolean restorePicture(Bundle b, File src) { 1695 if (src == null || b == null) { 1696 return false; 1697 } 1698 if (!src.exists()) { 1699 return false; 1700 } 1701 try { 1702 final FileInputStream in = new FileInputStream(src); 1703 final Bundle copy = new Bundle(b); 1704 new Thread(new Runnable() { 1705 public void run() { 1706 try { 1707 final Picture p = Picture.createFromStream(in); 1708 if (p != null) { 1709 // Post a runnable on the main thread to update the 1710 // history picture fields. 1711 mPrivateHandler.post(new Runnable() { 1712 public void run() { 1713 restoreHistoryPictureFields(p, copy); 1714 } 1715 }); 1716 } 1717 } finally { 1718 try { 1719 in.close(); 1720 } catch (Exception e) { 1721 // Nothing we can do now. 1722 } 1723 } 1724 } 1725 }).start(); 1726 } catch (FileNotFoundException e){ 1727 e.printStackTrace(); 1728 } 1729 return true; 1730 } 1731 1732 /** 1733 * Restore the state of this WebView from the given map used in 1734 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1735 * be called to restore the state of the WebView before using the object. If 1736 * it is called after the WebView has had a chance to build state (load 1737 * pages, create a back/forward list, etc.) there may be undesirable 1738 * side-effects. Please note that this method no longer restores the 1739 * display data for this WebView. See {@link #savePicture} and {@link 1740 * #restorePicture} for saving and restoring the display data. 1741 * @param inState The incoming Bundle of state. 1742 * @return The restored back/forward list or null if restoreState failed. 1743 * @see #savePicture 1744 * @see #restorePicture 1745 */ 1746 public WebBackForwardList restoreState(Bundle inState) { 1747 WebBackForwardList returnList = null; 1748 if (inState == null) { 1749 return returnList; 1750 } 1751 if (inState.containsKey("index") && inState.containsKey("history")) { 1752 mCertificate = SslCertificate.restoreState( 1753 inState.getBundle("certificate")); 1754 1755 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1756 final int index = inState.getInt("index"); 1757 // We can't use a clone of the list because we need to modify the 1758 // shared copy, so synchronize instead to prevent concurrent 1759 // modifications. 1760 synchronized (list) { 1761 final List<byte[]> history = 1762 (List<byte[]>) inState.getSerializable("history"); 1763 final int size = history.size(); 1764 // Check the index bounds so we don't crash in native code while 1765 // restoring the history index. 1766 if (index < 0 || index >= size) { 1767 return null; 1768 } 1769 for (int i = 0; i < size; i++) { 1770 byte[] data = history.remove(0); 1771 if (data == null) { 1772 // If we somehow have null data, we cannot reconstruct 1773 // the item and thus our history list cannot be rebuilt. 1774 return null; 1775 } 1776 WebHistoryItem item = new WebHistoryItem(data); 1777 list.addHistoryItem(item); 1778 } 1779 // Grab the most recent copy to return to the caller. 1780 returnList = copyBackForwardList(); 1781 // Update the copy to have the correct index. 1782 returnList.setCurrentIndex(index); 1783 } 1784 // Restore private browsing setting. 1785 if (inState.getBoolean("privateBrowsingEnabled")) { 1786 getSettings().setPrivateBrowsingEnabled(true); 1787 } 1788 mZoomManager.restoreZoomState(inState); 1789 // Remove all pending messages because we are restoring previous 1790 // state. 1791 mWebViewCore.removeMessages(); 1792 // Send a restore state message. 1793 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1794 } 1795 return returnList; 1796 } 1797 1798 /** 1799 * Load the given url with the extra headers. 1800 * @param url The url of the resource to load. 1801 * @param extraHeaders The extra headers sent with this url. This should not 1802 * include the common headers like "user-agent". If it does, it 1803 * will be replaced by the intrinsic value of the WebView. 1804 */ 1805 public void loadUrl(String url, Map<String, String> extraHeaders) { 1806 switchOutDrawHistory(); 1807 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1808 arg.mUrl = url; 1809 arg.mExtraHeaders = extraHeaders; 1810 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1811 clearHelpers(); 1812 } 1813 1814 /** 1815 * Load the given url. 1816 * @param url The url of the resource to load. 1817 */ 1818 public void loadUrl(String url) { 1819 if (url == null) { 1820 return; 1821 } 1822 loadUrl(url, null); 1823 } 1824 1825 /** 1826 * Load the url with postData using "POST" method into the WebView. If url 1827 * is not a network url, it will be loaded with {link 1828 * {@link #loadUrl(String)} instead. 1829 * 1830 * @param url The url of the resource to load. 1831 * @param postData The data will be passed to "POST" request. 1832 */ 1833 public void postUrl(String url, byte[] postData) { 1834 if (URLUtil.isNetworkUrl(url)) { 1835 switchOutDrawHistory(); 1836 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1837 arg.mUrl = url; 1838 arg.mPostData = postData; 1839 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1840 clearHelpers(); 1841 } else { 1842 loadUrl(url); 1843 } 1844 } 1845 1846 /** 1847 * Load the given data into the WebView. This will load the data into 1848 * WebView using the data: scheme. Content loaded through this mechanism 1849 * does not have the ability to load content from the network. 1850 * @param data A String of data in the given encoding. The date must 1851 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1852 * %27, %3f respectively. 1853 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1854 * @param encoding The encoding of the data. i.e. utf-8, base64 1855 */ 1856 public void loadData(String data, String mimeType, String encoding) { 1857 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1858 } 1859 1860 /** 1861 * Load the given data into the WebView, use the provided URL as the base 1862 * URL for the content. The base URL is the URL that represents the page 1863 * that is loaded through this interface. As such, it is used to resolve any 1864 * relative URLs. The historyUrl is used for the history entry. 1865 * <p> 1866 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1867 * files through "file:///android_asset/" for the sub resources is more 1868 * restricted. If you provide null or empty string as baseUrl, you won't be 1869 * able to access asset files. If the baseUrl is anything other than 1870 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1871 * sub resources. 1872 * 1873 * @param baseUrl Url to resolve relative paths with, if null defaults to 1874 * "about:blank" 1875 * @param data A String of data in the given encoding. 1876 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1877 * defaults to "text/html" 1878 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1879 * @param historyUrl URL to use as the history entry. Can be null. 1880 */ 1881 public void loadDataWithBaseURL(String baseUrl, String data, 1882 String mimeType, String encoding, String historyUrl) { 1883 1884 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1885 loadData(data, mimeType, encoding); 1886 return; 1887 } 1888 switchOutDrawHistory(); 1889 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1890 arg.mBaseUrl = baseUrl; 1891 arg.mData = data; 1892 arg.mMimeType = mimeType; 1893 arg.mEncoding = encoding; 1894 arg.mHistoryUrl = historyUrl; 1895 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1896 clearHelpers(); 1897 } 1898 1899 /** 1900 * Saves the current view as a web archive. 1901 * 1902 * @param filename The filename where the archive should be placed. 1903 */ 1904 public void saveWebArchive(String filename) { 1905 saveWebArchive(filename, false, null); 1906 } 1907 1908 /* package */ static class SaveWebArchiveMessage { 1909 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1910 mBasename = basename; 1911 mAutoname = autoname; 1912 mCallback = callback; 1913 } 1914 1915 /* package */ final String mBasename; 1916 /* package */ final boolean mAutoname; 1917 /* package */ final ValueCallback<String> mCallback; 1918 /* package */ String mResultFile; 1919 } 1920 1921 /** 1922 * Saves the current view as a web archive. 1923 * 1924 * @param basename The filename where the archive should be placed. 1925 * @param autoname If false, takes basename to be a file. If true, basename 1926 * is assumed to be a directory in which a filename will be 1927 * chosen according to the url of the current page. 1928 * @param callback Called after the web archive has been saved. The 1929 * parameter for onReceiveValue will either be the filename 1930 * under which the file was saved, or null if saving the 1931 * file failed. 1932 */ 1933 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1934 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1935 new SaveWebArchiveMessage(basename, autoname, callback)); 1936 } 1937 1938 /** 1939 * Stop the current load. 1940 */ 1941 public void stopLoading() { 1942 // TODO: should we clear all the messages in the queue before sending 1943 // STOP_LOADING? 1944 switchOutDrawHistory(); 1945 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1946 } 1947 1948 /** 1949 * Reload the current url. 1950 */ 1951 public void reload() { 1952 clearHelpers(); 1953 switchOutDrawHistory(); 1954 mWebViewCore.sendMessage(EventHub.RELOAD); 1955 } 1956 1957 /** 1958 * Return true if this WebView has a back history item. 1959 * @return True iff this WebView has a back history item. 1960 */ 1961 public boolean canGoBack() { 1962 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1963 synchronized (l) { 1964 if (l.getClearPending()) { 1965 return false; 1966 } else { 1967 return l.getCurrentIndex() > 0; 1968 } 1969 } 1970 } 1971 1972 /** 1973 * Go back in the history of this WebView. 1974 */ 1975 public void goBack() { 1976 goBackOrForward(-1); 1977 } 1978 1979 /** 1980 * Return true if this WebView has a forward history item. 1981 * @return True iff this Webview has a forward history item. 1982 */ 1983 public boolean canGoForward() { 1984 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1985 synchronized (l) { 1986 if (l.getClearPending()) { 1987 return false; 1988 } else { 1989 return l.getCurrentIndex() < l.getSize() - 1; 1990 } 1991 } 1992 } 1993 1994 /** 1995 * Go forward in the history of this WebView. 1996 */ 1997 public void goForward() { 1998 goBackOrForward(1); 1999 } 2000 2001 /** 2002 * Return true if the page can go back or forward the given 2003 * number of steps. 2004 * @param steps The negative or positive number of steps to move the 2005 * history. 2006 */ 2007 public boolean canGoBackOrForward(int steps) { 2008 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2009 synchronized (l) { 2010 if (l.getClearPending()) { 2011 return false; 2012 } else { 2013 int newIndex = l.getCurrentIndex() + steps; 2014 return newIndex >= 0 && newIndex < l.getSize(); 2015 } 2016 } 2017 } 2018 2019 /** 2020 * Go to the history item that is the number of steps away from 2021 * the current item. Steps is negative if backward and positive 2022 * if forward. 2023 * @param steps The number of steps to take back or forward in the back 2024 * forward list. 2025 */ 2026 public void goBackOrForward(int steps) { 2027 goBackOrForward(steps, false); 2028 } 2029 2030 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2031 if (steps != 0) { 2032 clearHelpers(); 2033 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2034 ignoreSnapshot ? 1 : 0); 2035 } 2036 } 2037 2038 /** 2039 * Returns true if private browsing is enabled in this WebView. 2040 */ 2041 public boolean isPrivateBrowsingEnabled() { 2042 return getSettings().isPrivateBrowsingEnabled(); 2043 } 2044 2045 private void startPrivateBrowsing() { 2046 getSettings().setPrivateBrowsingEnabled(true); 2047 } 2048 2049 private boolean extendScroll(int y) { 2050 int finalY = mScroller.getFinalY(); 2051 int newY = pinLocY(finalY + y); 2052 if (newY == finalY) return false; 2053 mScroller.setFinalY(newY); 2054 mScroller.extendDuration(computeDuration(0, y)); 2055 return true; 2056 } 2057 2058 /** 2059 * Scroll the contents of the view up by half the view size 2060 * @param top true to jump to the top of the page 2061 * @return true if the page was scrolled 2062 */ 2063 public boolean pageUp(boolean top) { 2064 if (mNativeClass == 0) { 2065 return false; 2066 } 2067 nativeClearCursor(); // start next trackball movement from page edge 2068 if (top) { 2069 // go to the top of the document 2070 return pinScrollTo(mScrollX, 0, true, 0); 2071 } 2072 // Page up 2073 int h = getHeight(); 2074 int y; 2075 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2076 y = -h + PAGE_SCROLL_OVERLAP; 2077 } else { 2078 y = -h / 2; 2079 } 2080 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2081 : extendScroll(y); 2082 } 2083 2084 /** 2085 * Scroll the contents of the view down by half the page size 2086 * @param bottom true to jump to bottom of page 2087 * @return true if the page was scrolled 2088 */ 2089 public boolean pageDown(boolean bottom) { 2090 if (mNativeClass == 0) { 2091 return false; 2092 } 2093 nativeClearCursor(); // start next trackball movement from page edge 2094 if (bottom) { 2095 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2096 } 2097 // Page down. 2098 int h = getHeight(); 2099 int y; 2100 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2101 y = h - PAGE_SCROLL_OVERLAP; 2102 } else { 2103 y = h / 2; 2104 } 2105 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2106 : extendScroll(y); 2107 } 2108 2109 /** 2110 * Clear the view so that onDraw() will draw nothing but white background, 2111 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2112 */ 2113 public void clearView() { 2114 mContentWidth = 0; 2115 mContentHeight = 0; 2116 setBaseLayer(0, null, false, false); 2117 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2118 } 2119 2120 /** 2121 * Return a new picture that captures the current display of the webview. 2122 * This is a copy of the display, and will be unaffected if the webview 2123 * later loads a different URL. 2124 * 2125 * @return a picture containing the current contents of the view. Note this 2126 * picture is of the entire document, and is not restricted to the 2127 * bounds of the view. 2128 */ 2129 public Picture capturePicture() { 2130 if (mNativeClass == 0) return null; 2131 Picture result = new Picture(); 2132 nativeCopyBaseContentToPicture(result); 2133 return result; 2134 } 2135 2136 /** 2137 * Return true if the browser is displaying a TextView for text input. 2138 */ 2139 private boolean inEditingMode() { 2140 return mWebTextView != null && mWebTextView.getParent() != null; 2141 } 2142 2143 /** 2144 * Remove the WebTextView. 2145 */ 2146 private void clearTextEntry() { 2147 if (inEditingMode()) { 2148 mWebTextView.remove(); 2149 } else { 2150 // The keyboard may be open with the WebView as the served view 2151 hideSoftKeyboard(); 2152 } 2153 } 2154 2155 /** 2156 * Return the current scale of the WebView 2157 * @return The current scale. 2158 */ 2159 public float getScale() { 2160 return mZoomManager.getScale(); 2161 } 2162 2163 /** 2164 * Set the initial scale for the WebView. 0 means default. If 2165 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2166 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2167 * WebView starts will this value as initial scale. 2168 * 2169 * @param scaleInPercent The initial scale in percent. 2170 */ 2171 public void setInitialScale(int scaleInPercent) { 2172 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2173 } 2174 2175 /** 2176 * Invoke the graphical zoom picker widget for this WebView. This will 2177 * result in the zoom widget appearing on the screen to control the zoom 2178 * level of this WebView. 2179 */ 2180 public void invokeZoomPicker() { 2181 if (!getSettings().supportZoom()) { 2182 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2183 return; 2184 } 2185 clearHelpers(); 2186 mZoomManager.invokeZoomPicker(); 2187 } 2188 2189 /** 2190 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2191 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2192 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2193 * anchor does not have a url or if it is a JavaScript url, the type will 2194 * be UNKNOWN_TYPE and the url has to be retrieved through 2195 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2196 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2197 * the "extra" field. A type of 2198 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2199 * a child node. If a phone number is found, the HitTestResult type is set 2200 * to PHONE_TYPE and the phone number is set in the "extra" field of 2201 * HitTestResult. If a map address is found, the HitTestResult type is set 2202 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2203 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2204 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2205 * HitTestResult type is set to UNKNOWN_TYPE. 2206 */ 2207 public HitTestResult getHitTestResult() { 2208 return hitTestResult(mInitialHitTestResult); 2209 } 2210 2211 private HitTestResult hitTestResult(HitTestResult fallback) { 2212 if (mNativeClass == 0) { 2213 return null; 2214 } 2215 2216 HitTestResult result = new HitTestResult(); 2217 if (nativeHasCursorNode()) { 2218 if (nativeCursorIsTextInput()) { 2219 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2220 } else { 2221 String text = nativeCursorText(); 2222 if (text != null) { 2223 if (text.startsWith(SCHEME_TEL)) { 2224 result.setType(HitTestResult.PHONE_TYPE); 2225 result.setExtra(text.substring(SCHEME_TEL.length())); 2226 } else if (text.startsWith(SCHEME_MAILTO)) { 2227 result.setType(HitTestResult.EMAIL_TYPE); 2228 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2229 } else if (text.startsWith(SCHEME_GEO)) { 2230 result.setType(HitTestResult.GEO_TYPE); 2231 result.setExtra(URLDecoder.decode(text 2232 .substring(SCHEME_GEO.length()))); 2233 } else if (nativeCursorIsAnchor()) { 2234 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2235 result.setExtra(text); 2236 } 2237 } 2238 } 2239 } else if (fallback != null) { 2240 /* If webkit causes a rebuild while the long press is in progress, 2241 * the cursor node may be reset, even if it is still around. This 2242 * uses the cursor node saved when the touch began. Since the 2243 * nativeImageURI below only changes the result if it is successful, 2244 * this uses the data beneath the touch if available or the original 2245 * tap data otherwise. 2246 */ 2247 Log.v(LOGTAG, "hitTestResult use fallback"); 2248 result = fallback; 2249 } 2250 int type = result.getType(); 2251 if (type == HitTestResult.UNKNOWN_TYPE 2252 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2253 // Now check to see if it is an image. 2254 int contentX = viewToContentX(mLastTouchX + mScrollX); 2255 int contentY = viewToContentY(mLastTouchY + mScrollY); 2256 String text = nativeImageURI(contentX, contentY); 2257 if (text != null) { 2258 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2259 HitTestResult.IMAGE_TYPE : 2260 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2261 result.setExtra(text); 2262 } 2263 } 2264 return result; 2265 } 2266 2267 // Called by JNI when the DOM has changed the focus. Clear the focus so 2268 // that new keys will go to the newly focused field 2269 private void domChangedFocus() { 2270 if (inEditingMode()) { 2271 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2272 } 2273 } 2274 /** 2275 * Request the anchor or image element URL at the last tapped point. 2276 * If hrefMsg is null, this method returns immediately and does not 2277 * dispatch hrefMsg to its target. If the tapped point hits an image, 2278 * an anchor, or an image in an anchor, the message associates 2279 * strings in named keys in its data. The value paired with the key 2280 * may be an empty string. 2281 * 2282 * @param hrefMsg This message will be dispatched with the result of the 2283 * request. The message data contains three keys: 2284 * - "url" returns the anchor's href attribute. 2285 * - "title" returns the anchor's text. 2286 * - "src" returns the image's src attribute. 2287 */ 2288 public void requestFocusNodeHref(Message hrefMsg) { 2289 if (hrefMsg == null) { 2290 return; 2291 } 2292 int contentX = viewToContentX(mLastTouchX + mScrollX); 2293 int contentY = viewToContentY(mLastTouchY + mScrollY); 2294 if (nativeHasCursorNode()) { 2295 Rect cursorBounds = nativeGetCursorRingBounds(); 2296 if (!cursorBounds.contains(contentX, contentY)) { 2297 int slop = viewToContentDimension(mNavSlop); 2298 cursorBounds.inset(-slop, -slop); 2299 if (cursorBounds.contains(contentX, contentY)) { 2300 contentX = (int) cursorBounds.centerX(); 2301 contentY = (int) cursorBounds.centerY(); 2302 } 2303 } 2304 } 2305 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2306 contentX, contentY, hrefMsg); 2307 } 2308 2309 /** 2310 * Request the url of the image last touched by the user. msg will be sent 2311 * to its target with a String representing the url as its object. 2312 * 2313 * @param msg This message will be dispatched with the result of the request 2314 * as the data member with "url" as key. The result can be null. 2315 */ 2316 public void requestImageRef(Message msg) { 2317 if (0 == mNativeClass) return; // client isn't initialized 2318 int contentX = viewToContentX(mLastTouchX + mScrollX); 2319 int contentY = viewToContentY(mLastTouchY + mScrollY); 2320 String ref = nativeImageURI(contentX, contentY); 2321 Bundle data = msg.getData(); 2322 data.putString("url", ref); 2323 msg.setData(data); 2324 msg.sendToTarget(); 2325 } 2326 2327 static int pinLoc(int x, int viewMax, int docMax) { 2328// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2329 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2330 // pin the short document to the top/left of the screen 2331 x = 0; 2332// Log.d(LOGTAG, "--- center " + x); 2333 } else if (x < 0) { 2334 x = 0; 2335// Log.d(LOGTAG, "--- zero"); 2336 } else if (x + viewMax > docMax) { 2337 x = docMax - viewMax; 2338// Log.d(LOGTAG, "--- pin " + x); 2339 } 2340 return x; 2341 } 2342 2343 // Expects x in view coordinates 2344 int pinLocX(int x) { 2345 if (mInOverScrollMode) return x; 2346 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2347 } 2348 2349 // Expects y in view coordinates 2350 int pinLocY(int y) { 2351 if (mInOverScrollMode) return y; 2352 return pinLoc(y, getViewHeightWithTitle(), 2353 computeRealVerticalScrollRange() + getTitleHeight()); 2354 } 2355 2356 /** 2357 * A title bar which is embedded in this WebView, and scrolls along with it 2358 * vertically, but not horizontally. 2359 */ 2360 private View mTitleBar; 2361 2362 /** 2363 * the title bar rendering gravity 2364 */ 2365 private int mTitleGravity; 2366 2367 /** 2368 * Add or remove a title bar to be embedded into the WebView, and scroll 2369 * along with it vertically, while remaining in view horizontally. Pass 2370 * null to remove the title bar from the WebView, and return to drawing 2371 * the WebView normally without translating to account for the title bar. 2372 * @hide 2373 */ 2374 public void setEmbeddedTitleBar(View v) { 2375 if (mTitleBar == v) return; 2376 if (mTitleBar != null) { 2377 removeView(mTitleBar); 2378 } 2379 if (null != v) { 2380 addView(v, new AbsoluteLayout.LayoutParams( 2381 ViewGroup.LayoutParams.MATCH_PARENT, 2382 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2383 } 2384 mTitleBar = v; 2385 } 2386 2387 /** 2388 * Set where to render the embedded title bar 2389 * NO_GRAVITY at the top of the page 2390 * TOP at the top of the screen 2391 * @hide 2392 */ 2393 public void setTitleBarGravity(int gravity) { 2394 mTitleGravity = gravity; 2395 } 2396 2397 /** 2398 * Given a distance in view space, convert it to content space. Note: this 2399 * does not reflect translation, just scaling, so this should not be called 2400 * with coordinates, but should be called for dimensions like width or 2401 * height. 2402 */ 2403 private int viewToContentDimension(int d) { 2404 return Math.round(d * mZoomManager.getInvScale()); 2405 } 2406 2407 /** 2408 * Given an x coordinate in view space, convert it to content space. Also 2409 * may be used for absolute heights (such as for the WebTextView's 2410 * textSize, which is unaffected by the height of the title bar). 2411 */ 2412 /*package*/ int viewToContentX(int x) { 2413 return viewToContentDimension(x); 2414 } 2415 2416 /** 2417 * Given a y coordinate in view space, convert it to content space. 2418 * Takes into account the height of the title bar if there is one 2419 * embedded into the WebView. 2420 */ 2421 /*package*/ int viewToContentY(int y) { 2422 return viewToContentDimension(y - getTitleHeight()); 2423 } 2424 2425 /** 2426 * Given a x coordinate in view space, convert it to content space. 2427 * Returns the result as a float. 2428 */ 2429 private float viewToContentXf(int x) { 2430 return x * mZoomManager.getInvScale(); 2431 } 2432 2433 /** 2434 * Given a y coordinate in view space, convert it to content space. 2435 * Takes into account the height of the title bar if there is one 2436 * embedded into the WebView. Returns the result as a float. 2437 */ 2438 private float viewToContentYf(int y) { 2439 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2440 } 2441 2442 /** 2443 * Given a distance in content space, convert it to view space. Note: this 2444 * does not reflect translation, just scaling, so this should not be called 2445 * with coordinates, but should be called for dimensions like width or 2446 * height. 2447 */ 2448 /*package*/ int contentToViewDimension(int d) { 2449 return Math.round(d * mZoomManager.getScale()); 2450 } 2451 2452 /** 2453 * Given an x coordinate in content space, convert it to view 2454 * space. 2455 */ 2456 /*package*/ int contentToViewX(int x) { 2457 return contentToViewDimension(x); 2458 } 2459 2460 /** 2461 * Given a y coordinate in content space, convert it to view 2462 * space. Takes into account the height of the title bar. 2463 */ 2464 /*package*/ int contentToViewY(int y) { 2465 return contentToViewDimension(y) + getTitleHeight(); 2466 } 2467 2468 private Rect contentToViewRect(Rect x) { 2469 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2470 contentToViewX(x.right), contentToViewY(x.bottom)); 2471 } 2472 2473 /* To invalidate a rectangle in content coordinates, we need to transform 2474 the rect into view coordinates, so we can then call invalidate(...). 2475 2476 Normally, we would just call contentToView[XY](...), which eventually 2477 calls Math.round(coordinate * mActualScale). However, for invalidates, 2478 we need to account for the slop that occurs with antialiasing. To 2479 address that, we are a little more liberal in the size of the rect that 2480 we invalidate. 2481 2482 This liberal calculation calls floor() for the top/left, and ceil() for 2483 the bottom/right coordinates. This catches the possible extra pixels of 2484 antialiasing that we might have missed with just round(). 2485 */ 2486 2487 // Called by JNI to invalidate the View, given rectangle coordinates in 2488 // content space 2489 private void viewInvalidate(int l, int t, int r, int b) { 2490 final float scale = mZoomManager.getScale(); 2491 final int dy = getTitleHeight(); 2492 invalidate((int)Math.floor(l * scale), 2493 (int)Math.floor(t * scale) + dy, 2494 (int)Math.ceil(r * scale), 2495 (int)Math.ceil(b * scale) + dy); 2496 } 2497 2498 // Called by JNI to invalidate the View after a delay, given rectangle 2499 // coordinates in content space 2500 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2501 final float scale = mZoomManager.getScale(); 2502 final int dy = getTitleHeight(); 2503 postInvalidateDelayed(delay, 2504 (int)Math.floor(l * scale), 2505 (int)Math.floor(t * scale) + dy, 2506 (int)Math.ceil(r * scale), 2507 (int)Math.ceil(b * scale) + dy); 2508 } 2509 2510 private void invalidateContentRect(Rect r) { 2511 viewInvalidate(r.left, r.top, r.right, r.bottom); 2512 } 2513 2514 // stop the scroll animation, and don't let a subsequent fling add 2515 // to the existing velocity 2516 private void abortAnimation() { 2517 mScroller.abortAnimation(); 2518 mLastVelocity = 0; 2519 } 2520 2521 /* call from webcoreview.draw(), so we're still executing in the UI thread 2522 */ 2523 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2524 2525 // premature data from webkit, ignore 2526 if ((w | h) == 0) { 2527 return; 2528 } 2529 2530 // don't abort a scroll animation if we didn't change anything 2531 if (mContentWidth != w || mContentHeight != h) { 2532 // record new dimensions 2533 mContentWidth = w; 2534 mContentHeight = h; 2535 // If history Picture is drawn, don't update scroll. They will be 2536 // updated when we get out of that mode. 2537 if (!mDrawHistory) { 2538 // repin our scroll, taking into account the new content size 2539 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2540 if (!mScroller.isFinished()) { 2541 // We are in the middle of a scroll. Repin the final scroll 2542 // position. 2543 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2544 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2545 } 2546 } 2547 } 2548 contentSizeChanged(updateLayout); 2549 } 2550 2551 // Used to avoid sending many visible rect messages. 2552 private Rect mLastVisibleRectSent; 2553 private Rect mLastGlobalRect; 2554 2555 Rect sendOurVisibleRect() { 2556 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2557 Rect rect = new Rect(); 2558 calcOurContentVisibleRect(rect); 2559 // Rect.equals() checks for null input. 2560 if (!rect.equals(mLastVisibleRectSent)) { 2561 Point pos = new Point(rect.left, rect.top); 2562 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2563 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2564 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, pos); 2565 mLastVisibleRectSent = rect; 2566 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2567 } 2568 Rect globalRect = new Rect(); 2569 if (getGlobalVisibleRect(globalRect) 2570 && !globalRect.equals(mLastGlobalRect)) { 2571 if (DebugFlags.WEB_VIEW) { 2572 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2573 + globalRect.top + ",r=" + globalRect.right + ",b=" 2574 + globalRect.bottom); 2575 } 2576 // TODO: the global offset is only used by windowRect() 2577 // in ChromeClientAndroid ; other clients such as touch 2578 // and mouse events could return view + screen relative points. 2579 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2580 mLastGlobalRect = globalRect; 2581 } 2582 return rect; 2583 } 2584 2585 // Sets r to be the visible rectangle of our webview in view coordinates 2586 private void calcOurVisibleRect(Rect r) { 2587 Point p = new Point(); 2588 getGlobalVisibleRect(r, p); 2589 r.offset(-p.x, -p.y); 2590 } 2591 2592 // Sets r to be our visible rectangle in content coordinates 2593 private void calcOurContentVisibleRect(Rect r) { 2594 calcOurVisibleRect(r); 2595 r.left = viewToContentX(r.left); 2596 // viewToContentY will remove the total height of the title bar. Add 2597 // the visible height back in to account for the fact that if the title 2598 // bar is partially visible, the part of the visible rect which is 2599 // displaying our content is displaced by that amount. 2600 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2601 r.right = viewToContentX(r.right); 2602 r.bottom = viewToContentY(r.bottom); 2603 } 2604 2605 // Sets r to be our visible rectangle in content coordinates. We use this 2606 // method on the native side to compute the position of the fixed layers. 2607 // Uses floating coordinates (necessary to correctly place elements when 2608 // the scale factor is not 1) 2609 private void calcOurContentVisibleRectF(RectF r) { 2610 Rect ri = new Rect(0,0,0,0); 2611 calcOurVisibleRect(ri); 2612 r.left = viewToContentXf(ri.left); 2613 // viewToContentY will remove the total height of the title bar. Add 2614 // the visible height back in to account for the fact that if the title 2615 // bar is partially visible, the part of the visible rect which is 2616 // displaying our content is displaced by that amount. 2617 r.top = viewToContentYf(ri.top + getVisibleTitleHeight()); 2618 r.right = viewToContentXf(ri.right); 2619 r.bottom = viewToContentYf(ri.bottom); 2620 } 2621 2622 static class ViewSizeData { 2623 int mWidth; 2624 int mHeight; 2625 float mHeightWidthRatio; 2626 int mActualViewHeight; 2627 int mTextWrapWidth; 2628 int mAnchorX; 2629 int mAnchorY; 2630 float mScale; 2631 boolean mIgnoreHeight; 2632 } 2633 2634 /** 2635 * Compute unzoomed width and height, and if they differ from the last 2636 * values we sent, send them to webkit (to be used as new viewport) 2637 * 2638 * @param force ensures that the message is sent to webkit even if the width 2639 * or height has not changed since the last message 2640 * 2641 * @return true if new values were sent 2642 */ 2643 boolean sendViewSizeZoom(boolean force) { 2644 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2645 2646 int viewWidth = getViewWidth(); 2647 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2648 // This height could be fixed and be different from actual visible height. 2649 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 2650 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 2651 // Make the ratio more accurate than (newHeight / newWidth), since the 2652 // latter both are calculated and rounded. 2653 float heightWidthRatio = (float) viewHeight / viewWidth; 2654 /* 2655 * Because the native side may have already done a layout before the 2656 * View system was able to measure us, we have to send a height of 0 to 2657 * remove excess whitespace when we grow our width. This will trigger a 2658 * layout and a change in content size. This content size change will 2659 * mean that contentSizeChanged will either call this method directly or 2660 * indirectly from onSizeChanged. 2661 */ 2662 if (newWidth > mLastWidthSent && mWrapContent) { 2663 newHeight = 0; 2664 heightWidthRatio = 0; 2665 } 2666 // Actual visible content height. 2667 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 2668 // Avoid sending another message if the dimensions have not changed. 2669 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 2670 actualViewHeight != mLastActualHeightSent) { 2671 ViewSizeData data = new ViewSizeData(); 2672 data.mWidth = newWidth; 2673 data.mHeight = newHeight; 2674 data.mHeightWidthRatio = heightWidthRatio; 2675 data.mActualViewHeight = actualViewHeight; 2676 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2677 data.mScale = mZoomManager.getScale(); 2678 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2679 && !mHeightCanMeasure; 2680 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2681 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2682 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2683 mLastWidthSent = newWidth; 2684 mLastHeightSent = newHeight; 2685 mLastActualHeightSent = actualViewHeight; 2686 mZoomManager.clearDocumentAnchor(); 2687 return true; 2688 } 2689 return false; 2690 } 2691 2692 private int computeRealHorizontalScrollRange() { 2693 if (mDrawHistory) { 2694 return mHistoryWidth; 2695 } else { 2696 // to avoid rounding error caused unnecessary scrollbar, use floor 2697 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2698 } 2699 } 2700 2701 @Override 2702 protected int computeHorizontalScrollRange() { 2703 int range = computeRealHorizontalScrollRange(); 2704 2705 // Adjust reported range if overscrolled to compress the scroll bars 2706 final int scrollX = mScrollX; 2707 final int overscrollRight = computeMaxScrollX(); 2708 if (scrollX < 0) { 2709 range -= scrollX; 2710 } else if (scrollX > overscrollRight) { 2711 range += scrollX - overscrollRight; 2712 } 2713 2714 return range; 2715 } 2716 2717 @Override 2718 protected int computeHorizontalScrollOffset() { 2719 return Math.max(mScrollX, 0); 2720 } 2721 2722 private int computeRealVerticalScrollRange() { 2723 if (mDrawHistory) { 2724 return mHistoryHeight; 2725 } else { 2726 // to avoid rounding error caused unnecessary scrollbar, use floor 2727 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2728 } 2729 } 2730 2731 @Override 2732 protected int computeVerticalScrollRange() { 2733 int range = computeRealVerticalScrollRange(); 2734 2735 // Adjust reported range if overscrolled to compress the scroll bars 2736 final int scrollY = mScrollY; 2737 final int overscrollBottom = computeMaxScrollY(); 2738 if (scrollY < 0) { 2739 range -= scrollY; 2740 } else if (scrollY > overscrollBottom) { 2741 range += scrollY - overscrollBottom; 2742 } 2743 2744 return range; 2745 } 2746 2747 @Override 2748 protected int computeVerticalScrollOffset() { 2749 return Math.max(mScrollY - getTitleHeight(), 0); 2750 } 2751 2752 @Override 2753 protected int computeVerticalScrollExtent() { 2754 return getViewHeight(); 2755 } 2756 2757 /** @hide */ 2758 @Override 2759 protected void onDrawVerticalScrollBar(Canvas canvas, 2760 Drawable scrollBar, 2761 int l, int t, int r, int b) { 2762 if (mScrollY < 0) { 2763 t -= mScrollY; 2764 } 2765 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2766 scrollBar.draw(canvas); 2767 } 2768 2769 @Override 2770 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 2771 boolean clampedY) { 2772 // Special-case layer scrolling so that we do not trigger normal scroll 2773 // updating. 2774 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 2775 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 2776 mScrollingLayerRect.left = scrollX; 2777 mScrollingLayerRect.top = scrollY; 2778 invalidate(); 2779 return; 2780 } 2781 mInOverScrollMode = false; 2782 int maxX = computeMaxScrollX(); 2783 int maxY = computeMaxScrollY(); 2784 if (maxX == 0) { 2785 // do not over scroll x if the page just fits the screen 2786 scrollX = pinLocX(scrollX); 2787 } else if (scrollX < 0 || scrollX > maxX) { 2788 mInOverScrollMode = true; 2789 } 2790 if (scrollY < 0 || scrollY > maxY) { 2791 mInOverScrollMode = true; 2792 } 2793 2794 int oldX = mScrollX; 2795 int oldY = mScrollY; 2796 2797 super.scrollTo(scrollX, scrollY); 2798 2799 if (mOverScrollGlow != null) { 2800 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 2801 } 2802 } 2803 2804 /** 2805 * Get the url for the current page. This is not always the same as the url 2806 * passed to WebViewClient.onPageStarted because although the load for 2807 * that url has begun, the current page may not have changed. 2808 * @return The url for the current page. 2809 */ 2810 public String getUrl() { 2811 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2812 return h != null ? h.getUrl() : null; 2813 } 2814 2815 /** 2816 * Get the original url for the current page. This is not always the same 2817 * as the url passed to WebViewClient.onPageStarted because although the 2818 * load for that url has begun, the current page may not have changed. 2819 * Also, there may have been redirects resulting in a different url to that 2820 * originally requested. 2821 * @return The url that was originally requested for the current page. 2822 */ 2823 public String getOriginalUrl() { 2824 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2825 return h != null ? h.getOriginalUrl() : null; 2826 } 2827 2828 /** 2829 * Get the title for the current page. This is the title of the current page 2830 * until WebViewClient.onReceivedTitle is called. 2831 * @return The title for the current page. 2832 */ 2833 public String getTitle() { 2834 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2835 return h != null ? h.getTitle() : null; 2836 } 2837 2838 /** 2839 * Get the favicon for the current page. This is the favicon of the current 2840 * page until WebViewClient.onReceivedIcon is called. 2841 * @return The favicon for the current page. 2842 */ 2843 public Bitmap getFavicon() { 2844 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2845 return h != null ? h.getFavicon() : null; 2846 } 2847 2848 /** 2849 * Get the touch icon url for the apple-touch-icon <link> element, or 2850 * a URL on this site's server pointing to the standard location of a 2851 * touch icon. 2852 * @hide 2853 */ 2854 public String getTouchIconUrl() { 2855 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2856 return h != null ? h.getTouchIconUrl() : null; 2857 } 2858 2859 /** 2860 * Get the progress for the current page. 2861 * @return The progress for the current page between 0 and 100. 2862 */ 2863 public int getProgress() { 2864 return mCallbackProxy.getProgress(); 2865 } 2866 2867 /** 2868 * @return the height of the HTML content. 2869 */ 2870 public int getContentHeight() { 2871 return mContentHeight; 2872 } 2873 2874 /** 2875 * @return the width of the HTML content. 2876 * @hide 2877 */ 2878 public int getContentWidth() { 2879 return mContentWidth; 2880 } 2881 2882 /** 2883 * Pause all layout, parsing, and JavaScript timers for all webviews. This 2884 * is a global requests, not restricted to just this webview. This can be 2885 * useful if the application has been paused. 2886 */ 2887 public void pauseTimers() { 2888 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2889 } 2890 2891 /** 2892 * Resume all layout, parsing, and JavaScript timers for all webviews. 2893 * This will resume dispatching all timers. 2894 */ 2895 public void resumeTimers() { 2896 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2897 } 2898 2899 /** 2900 * Call this to pause any extra processing associated with this WebView and 2901 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 2902 * is taken offscreen, this could be called to reduce unnecessary CPU or 2903 * network traffic. When the WebView is again "active", call onResume(). 2904 * 2905 * Note that this differs from pauseTimers(), which affects all WebViews. 2906 */ 2907 public void onPause() { 2908 if (!mIsPaused) { 2909 mIsPaused = true; 2910 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2911 // We want to pause the current playing video when switching out 2912 // from the current WebView/tab. 2913 if (mHTML5VideoViewProxy != null) { 2914 mHTML5VideoViewProxy.pauseAndDispatch(); 2915 } 2916 } 2917 } 2918 2919 /** 2920 * Call this to resume a WebView after a previous call to onPause(). 2921 */ 2922 public void onResume() { 2923 if (mIsPaused) { 2924 mIsPaused = false; 2925 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2926 } 2927 } 2928 2929 /** 2930 * Returns true if the view is paused, meaning onPause() was called. Calling 2931 * onResume() sets the paused state back to false. 2932 * @hide 2933 */ 2934 public boolean isPaused() { 2935 return mIsPaused; 2936 } 2937 2938 /** 2939 * Call this to inform the view that memory is low so that it can 2940 * free any available memory. 2941 */ 2942 public void freeMemory() { 2943 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2944 } 2945 2946 /** 2947 * Clear the resource cache. Note that the cache is per-application, so 2948 * this will clear the cache for all WebViews used. 2949 * 2950 * @param includeDiskFiles If false, only the RAM cache is cleared. 2951 */ 2952 public void clearCache(boolean includeDiskFiles) { 2953 // Note: this really needs to be a static method as it clears cache for all 2954 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2955 // we can't make this static. 2956 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2957 includeDiskFiles ? 1 : 0, 0); 2958 } 2959 2960 /** 2961 * Make sure that clearing the form data removes the adapter from the 2962 * currently focused textfield if there is one. 2963 */ 2964 public void clearFormData() { 2965 if (inEditingMode()) { 2966 AutoCompleteAdapter adapter = null; 2967 mWebTextView.setAdapterCustom(adapter); 2968 } 2969 } 2970 2971 /** 2972 * Tell the WebView to clear its internal back/forward list. 2973 */ 2974 public void clearHistory() { 2975 mCallbackProxy.getBackForwardList().setClearPending(); 2976 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2977 } 2978 2979 /** 2980 * Clear the SSL preferences table stored in response to proceeding with SSL 2981 * certificate errors. 2982 */ 2983 public void clearSslPreferences() { 2984 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2985 } 2986 2987 /** 2988 * Return the WebBackForwardList for this WebView. This contains the 2989 * back/forward list for use in querying each item in the history stack. 2990 * This is a copy of the private WebBackForwardList so it contains only a 2991 * snapshot of the current state. Multiple calls to this method may return 2992 * different objects. The object returned from this method will not be 2993 * updated to reflect any new state. 2994 */ 2995 public WebBackForwardList copyBackForwardList() { 2996 return mCallbackProxy.getBackForwardList().clone(); 2997 } 2998 2999 /* 3000 * Highlight and scroll to the next occurance of String in findAll. 3001 * Wraps the page infinitely, and scrolls. Must be called after 3002 * calling findAll. 3003 * 3004 * @param forward Direction to search. 3005 */ 3006 public void findNext(boolean forward) { 3007 if (0 == mNativeClass) return; // client isn't initialized 3008 nativeFindNext(forward); 3009 } 3010 3011 /* 3012 * Find all instances of find on the page and highlight them. 3013 * @param find String to find. 3014 * @return int The number of occurances of the String "find" 3015 * that were found. 3016 */ 3017 public int findAll(String find) { 3018 if (0 == mNativeClass) return 0; // client isn't initialized 3019 int result = find != null ? nativeFindAll(find.toLowerCase(), 3020 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3021 invalidate(); 3022 mLastFind = find; 3023 return result; 3024 } 3025 3026 /** 3027 * Start an ActionMode for finding text in this WebView. Only works if this 3028 * WebView is attached to the view system. 3029 * @param text If non-null, will be the initial text to search for. 3030 * Otherwise, the last String searched for in this WebView will 3031 * be used to start. 3032 * @param showIme If true, show the IME, assuming the user will begin typing. 3033 * If false and text is non-null, perform a find all. 3034 * @return boolean True if the find dialog is shown, false otherwise. 3035 */ 3036 public boolean showFindDialog(String text, boolean showIme) { 3037 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3038 if (getParent() == null || startActionMode(callback) == null) { 3039 // Could not start the action mode, so end Find on page 3040 return false; 3041 } 3042 mFindCallback = callback; 3043 setFindIsUp(true); 3044 mFindCallback.setWebView(this); 3045 if (showIme) { 3046 mFindCallback.showSoftInput(); 3047 } else if (text != null) { 3048 mFindCallback.setText(text); 3049 mFindCallback.findAll(); 3050 return true; 3051 } 3052 if (text == null) { 3053 text = mLastFind; 3054 } 3055 if (text != null) { 3056 mFindCallback.setText(text); 3057 } 3058 return true; 3059 } 3060 3061 /** 3062 * Keep track of the find callback so that we can remove its titlebar if 3063 * necessary. 3064 */ 3065 private FindActionModeCallback mFindCallback; 3066 3067 /** 3068 * Toggle whether the find dialog is showing, for both native and Java. 3069 */ 3070 private void setFindIsUp(boolean isUp) { 3071 mFindIsUp = isUp; 3072 if (0 == mNativeClass) return; // client isn't initialized 3073 nativeSetFindIsUp(isUp); 3074 } 3075 3076 /** 3077 * Return the index of the currently highlighted match. 3078 */ 3079 int findIndex() { 3080 if (0 == mNativeClass) return -1; 3081 return nativeFindIndex(); 3082 } 3083 3084 // Used to know whether the find dialog is open. Affects whether 3085 // or not we draw the highlights for matches. 3086 private boolean mFindIsUp; 3087 3088 // Keep track of the last string sent, so we can search again when find is 3089 // reopened. 3090 private String mLastFind; 3091 3092 /** 3093 * Return the first substring consisting of the address of a physical 3094 * location. Currently, only addresses in the United States are detected, 3095 * and consist of: 3096 * - a house number 3097 * - a street name 3098 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3099 * - a city name 3100 * - a state or territory, either spelled out or two-letter abbr. 3101 * - an optional 5 digit or 9 digit zip code. 3102 * 3103 * All names must be correctly capitalized, and the zip code, if present, 3104 * must be valid for the state. The street type must be a standard USPS 3105 * spelling or abbreviation. The state or territory must also be spelled 3106 * or abbreviated using USPS standards. The house number may not exceed 3107 * five digits. 3108 * @param addr The string to search for addresses. 3109 * 3110 * @return the address, or if no address is found, return null. 3111 */ 3112 public static String findAddress(String addr) { 3113 return findAddress(addr, false); 3114 } 3115 3116 /** 3117 * @hide 3118 * Return the first substring consisting of the address of a physical 3119 * location. Currently, only addresses in the United States are detected, 3120 * and consist of: 3121 * - a house number 3122 * - a street name 3123 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3124 * - a city name 3125 * - a state or territory, either spelled out or two-letter abbr. 3126 * - an optional 5 digit or 9 digit zip code. 3127 * 3128 * Names are optionally capitalized, and the zip code, if present, 3129 * must be valid for the state. The street type must be a standard USPS 3130 * spelling or abbreviation. The state or territory must also be spelled 3131 * or abbreviated using USPS standards. The house number may not exceed 3132 * five digits. 3133 * @param addr The string to search for addresses. 3134 * @param caseInsensitive addr Set to true to make search ignore case. 3135 * 3136 * @return the address, or if no address is found, return null. 3137 */ 3138 public static String findAddress(String addr, boolean caseInsensitive) { 3139 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3140 } 3141 3142 /* 3143 * Clear the highlighting surrounding text matches created by findAll. 3144 */ 3145 public void clearMatches() { 3146 if (mNativeClass == 0) 3147 return; 3148 nativeSetFindIsEmpty(); 3149 invalidate(); 3150 } 3151 3152 /** 3153 * Called when the find ActionMode ends. 3154 */ 3155 void notifyFindDialogDismissed() { 3156 mFindCallback = null; 3157 if (mWebViewCore == null) { 3158 return; 3159 } 3160 clearMatches(); 3161 setFindIsUp(false); 3162 // Now that the dialog has been removed, ensure that we scroll to a 3163 // location that is not beyond the end of the page. 3164 pinScrollTo(mScrollX, mScrollY, false, 0); 3165 invalidate(); 3166 } 3167 3168 /** 3169 * Query the document to see if it contains any image references. The 3170 * message object will be dispatched with arg1 being set to 1 if images 3171 * were found and 0 if the document does not reference any images. 3172 * @param response The message that will be dispatched with the result. 3173 */ 3174 public void documentHasImages(Message response) { 3175 if (response == null) { 3176 return; 3177 } 3178 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3179 } 3180 3181 /** 3182 * Request the scroller to abort any ongoing animation 3183 * 3184 * @hide 3185 */ 3186 public void stopScroll() { 3187 mScroller.forceFinished(true); 3188 mLastVelocity = 0; 3189 } 3190 3191 @Override 3192 public void computeScroll() { 3193 if (mScroller.computeScrollOffset()) { 3194 int oldX = mScrollX; 3195 int oldY = mScrollY; 3196 int x = mScroller.getCurrX(); 3197 int y = mScroller.getCurrY(); 3198 invalidate(); // So we draw again 3199 3200 if (!mScroller.isFinished()) { 3201 int rangeX = computeMaxScrollX(); 3202 int rangeY = computeMaxScrollY(); 3203 int overflingDistance = mOverflingDistance; 3204 3205 // Use the layer's scroll data if needed. 3206 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3207 oldX = mScrollingLayerRect.left; 3208 oldY = mScrollingLayerRect.top; 3209 rangeX = mScrollingLayerRect.right; 3210 rangeY = mScrollingLayerRect.bottom; 3211 // No overscrolling for layers. 3212 overflingDistance = 0; 3213 } 3214 3215 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3216 rangeX, rangeY, 3217 overflingDistance, overflingDistance, false); 3218 3219 if (mOverScrollGlow != null) { 3220 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3221 } 3222 } else { 3223 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3224 mScrollX = x; 3225 mScrollY = y; 3226 } else { 3227 // Update the layer position instead of WebView. 3228 nativeScrollLayer(mScrollingLayer, x, y); 3229 mScrollingLayerRect.left = x; 3230 mScrollingLayerRect.top = y; 3231 } 3232 abortAnimation(); 3233 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3234 WebViewCore.resumePriority(); 3235 if (!mSelectingText) { 3236 WebViewCore.resumeUpdatePicture(mWebViewCore); 3237 } 3238 if (oldX != mScrollX || oldY != mScrollY) { 3239 sendOurVisibleRect(); 3240 } 3241 } 3242 } else { 3243 super.computeScroll(); 3244 } 3245 } 3246 3247 private static int computeDuration(int dx, int dy) { 3248 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3249 int duration = distance * 1000 / STD_SPEED; 3250 return Math.min(duration, MAX_DURATION); 3251 } 3252 3253 // helper to pin the scrollBy parameters (already in view coordinates) 3254 // returns true if the scroll was changed 3255 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3256 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3257 } 3258 // helper to pin the scrollTo parameters (already in view coordinates) 3259 // returns true if the scroll was changed 3260 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3261 x = pinLocX(x); 3262 y = pinLocY(y); 3263 int dx = x - mScrollX; 3264 int dy = y - mScrollY; 3265 3266 if ((dx | dy) == 0) { 3267 return false; 3268 } 3269 abortAnimation(); 3270 if (animate) { 3271 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3272 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3273 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3274 awakenScrollBars(mScroller.getDuration()); 3275 invalidate(); 3276 } else { 3277 scrollTo(x, y); 3278 } 3279 return true; 3280 } 3281 3282 // Scale from content to view coordinates, and pin. 3283 // Also called by jni webview.cpp 3284 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3285 if (mDrawHistory) { 3286 // disallow WebView to change the scroll position as History Picture 3287 // is used in the view system. 3288 // TODO: as we switchOutDrawHistory when trackball or navigation 3289 // keys are hit, this should be safe. Right? 3290 return false; 3291 } 3292 cx = contentToViewDimension(cx); 3293 cy = contentToViewDimension(cy); 3294 if (mHeightCanMeasure) { 3295 // move our visible rect according to scroll request 3296 if (cy != 0) { 3297 Rect tempRect = new Rect(); 3298 calcOurVisibleRect(tempRect); 3299 tempRect.offset(cx, cy); 3300 requestRectangleOnScreen(tempRect); 3301 } 3302 // FIXME: We scroll horizontally no matter what because currently 3303 // ScrollView and ListView will not scroll horizontally. 3304 // FIXME: Why do we only scroll horizontally if there is no 3305 // vertical scroll? 3306// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3307 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3308 } else { 3309 return pinScrollBy(cx, cy, animate, 0); 3310 } 3311 } 3312 3313 /** 3314 * Called by CallbackProxy when the page starts loading. 3315 * @param url The URL of the page which has started loading. 3316 */ 3317 /* package */ void onPageStarted(String url) { 3318 // every time we start a new page, we want to reset the 3319 // WebView certificate: if the new site is secure, we 3320 // will reload it and get a new certificate set; 3321 // if the new site is not secure, the certificate must be 3322 // null, and that will be the case 3323 setCertificate(null); 3324 3325 // reset the flag since we set to true in if need after 3326 // loading is see onPageFinished(Url) 3327 mAccessibilityScriptInjected = false; 3328 } 3329 3330 /** 3331 * Called by CallbackProxy when the page finishes loading. 3332 * @param url The URL of the page which has finished loading. 3333 */ 3334 /* package */ void onPageFinished(String url) { 3335 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3336 // If the user is now on a different page, or has scrolled the page 3337 // past the point where the title bar is offscreen, ignore the 3338 // scroll request. 3339 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3340 && mScrollX == 0 && mScrollY == 0) { 3341 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3342 SLIDE_TITLE_DURATION); 3343 } 3344 mPageThatNeedsToSlideTitleBarOffScreen = null; 3345 } 3346 mZoomManager.onPageFinished(url); 3347 injectAccessibilityForUrl(url); 3348 } 3349 3350 /** 3351 * This method injects accessibility in the loaded document if accessibility 3352 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3353 * If no URL specific script is found or JavaScript is disabled we fallback to 3354 * the default {@link AccessibilityInjector} implementation. 3355 * </p> 3356 * If the URL has the "axs" paramter set to 1 it has already done the 3357 * script injection so we do nothing. If the parameter is set to 0 3358 * the URL opts out accessibility script injection so we fall back to 3359 * the default {@link AccessibilityInjector}. 3360 * </p> 3361 * Note: If the user has not opted-in the accessibility script injection no scripts 3362 * are injected rather the default {@link AccessibilityInjector} implementation 3363 * is used. 3364 * 3365 * @param url The URL loaded by this {@link WebView}. 3366 */ 3367 private void injectAccessibilityForUrl(String url) { 3368 if (mWebViewCore == null) { 3369 return; 3370 } 3371 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3372 3373 if (!accessibilityManager.isEnabled()) { 3374 // it is possible that accessibility was turned off between reloads 3375 ensureAccessibilityScriptInjectorInstance(false); 3376 return; 3377 } 3378 3379 if (!getSettings().getJavaScriptEnabled()) { 3380 // no JS so we fallback to the basic buil-in support 3381 ensureAccessibilityScriptInjectorInstance(true); 3382 return; 3383 } 3384 3385 // check the URL "axs" parameter to choose appropriate action 3386 int axsParameterValue = getAxsUrlParameterValue(url); 3387 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3388 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3389 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3390 if (onDeviceScriptInjectionEnabled) { 3391 ensureAccessibilityScriptInjectorInstance(false); 3392 // neither script injected nor script injection opted out => we inject 3393 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3394 // TODO: Set this flag after successfull script injection. Maybe upon injection 3395 // the chooser should update the meta tag and we check it to declare success 3396 mAccessibilityScriptInjected = true; 3397 } else { 3398 // injection disabled so we fallback to the basic built-in support 3399 ensureAccessibilityScriptInjectorInstance(true); 3400 } 3401 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3402 // injection opted out so we fallback to the basic buil-in support 3403 ensureAccessibilityScriptInjectorInstance(true); 3404 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3405 ensureAccessibilityScriptInjectorInstance(false); 3406 // the URL provides accessibility but we still need to add our generic script 3407 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3408 } else { 3409 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3410 } 3411 } 3412 3413 /** 3414 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3415 * 3416 * @param present True to ensure an insance, false to ensure no instance. 3417 */ 3418 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3419 if (present) { 3420 if (mAccessibilityInjector == null) { 3421 mAccessibilityInjector = new AccessibilityInjector(this); 3422 } 3423 } else { 3424 mAccessibilityInjector = null; 3425 } 3426 } 3427 3428 /** 3429 * Gets the "axs" URL parameter value. 3430 * 3431 * @param url A url to fetch the paramter from. 3432 * @return The parameter value if such, -1 otherwise. 3433 */ 3434 private int getAxsUrlParameterValue(String url) { 3435 if (mMatchAxsUrlParameterPattern == null) { 3436 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3437 } 3438 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3439 if (matcher.find()) { 3440 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3441 return Integer.parseInt(keyValuePair.split("=")[1]); 3442 } 3443 return -1; 3444 } 3445 3446 /** 3447 * The URL of a page that sent a message to scroll the title bar off screen. 3448 * 3449 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3450 * title bar off the screen. Sometimes, the scroll position is set before 3451 * the page finishes loading. Rather than scrolling while the page is still 3452 * loading, keep track of the URL and new scroll position so we can perform 3453 * the scroll once the page finishes loading. 3454 */ 3455 private String mPageThatNeedsToSlideTitleBarOffScreen; 3456 3457 /** 3458 * The destination Y scroll position to be used when the page finishes 3459 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3460 */ 3461 private int mYDistanceToSlideTitleOffScreen; 3462 3463 // scale from content to view coordinates, and pin 3464 // return true if pin caused the final x/y different than the request cx/cy, 3465 // and a future scroll may reach the request cx/cy after our size has 3466 // changed 3467 // return false if the view scroll to the exact position as it is requested, 3468 // where negative numbers are taken to mean 0 3469 private boolean setContentScrollTo(int cx, int cy) { 3470 if (mDrawHistory) { 3471 // disallow WebView to change the scroll position as History Picture 3472 // is used in the view system. 3473 // One known case where this is called is that WebCore tries to 3474 // restore the scroll position. As history Picture already uses the 3475 // saved scroll position, it is ok to skip this. 3476 return false; 3477 } 3478 int vx; 3479 int vy; 3480 if ((cx | cy) == 0) { 3481 // If the page is being scrolled to (0,0), do not add in the title 3482 // bar's height, and simply scroll to (0,0). (The only other work 3483 // in contentToView_ is to multiply, so this would not change 0.) 3484 vx = 0; 3485 vy = 0; 3486 } else { 3487 vx = contentToViewX(cx); 3488 vy = contentToViewY(cy); 3489 } 3490// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3491// vx + " " + vy + "]"); 3492 // Some mobile sites attempt to scroll the title bar off the page by 3493 // scrolling to (0,1). If we are at the top left corner of the 3494 // page, assume this is an attempt to scroll off the title bar, and 3495 // animate the title bar off screen slowly enough that the user can see 3496 // it. 3497 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3498 && mTitleBar != null) { 3499 // FIXME: 100 should be defined somewhere as our max progress. 3500 if (getProgress() < 100) { 3501 // Wait to scroll the title bar off screen until the page has 3502 // finished loading. Keep track of the URL and the destination 3503 // Y position 3504 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3505 mYDistanceToSlideTitleOffScreen = vy; 3506 } else { 3507 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3508 } 3509 // Since we are animating, we have not yet reached the desired 3510 // scroll position. Do not return true to request another attempt 3511 return false; 3512 } 3513 pinScrollTo(vx, vy, false, 0); 3514 // If the request was to scroll to a negative coordinate, treat it as if 3515 // it was a request to scroll to 0 3516 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3517 return true; 3518 } else { 3519 return false; 3520 } 3521 } 3522 3523 // scale from content to view coordinates, and pin 3524 private void spawnContentScrollTo(int cx, int cy) { 3525 if (mDrawHistory) { 3526 // disallow WebView to change the scroll position as History Picture 3527 // is used in the view system. 3528 return; 3529 } 3530 int vx = contentToViewX(cx); 3531 int vy = contentToViewY(cy); 3532 pinScrollTo(vx, vy, true, 0); 3533 } 3534 3535 /** 3536 * These are from webkit, and are in content coordinate system (unzoomed) 3537 */ 3538 private void contentSizeChanged(boolean updateLayout) { 3539 // suppress 0,0 since we usually see real dimensions soon after 3540 // this avoids drawing the prev content in a funny place. If we find a 3541 // way to consolidate these notifications, this check may become 3542 // obsolete 3543 if ((mContentWidth | mContentHeight) == 0) { 3544 return; 3545 } 3546 3547 if (mHeightCanMeasure) { 3548 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3549 || updateLayout) { 3550 requestLayout(); 3551 } 3552 } else if (mWidthCanMeasure) { 3553 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3554 || updateLayout) { 3555 requestLayout(); 3556 } 3557 } else { 3558 // If we don't request a layout, try to send our view size to the 3559 // native side to ensure that WebCore has the correct dimensions. 3560 sendViewSizeZoom(false); 3561 } 3562 } 3563 3564 /** 3565 * Set the WebViewClient that will receive various notifications and 3566 * requests. This will replace the current handler. 3567 * @param client An implementation of WebViewClient. 3568 */ 3569 public void setWebViewClient(WebViewClient client) { 3570 mCallbackProxy.setWebViewClient(client); 3571 } 3572 3573 /** 3574 * Gets the WebViewClient 3575 * @return the current WebViewClient instance. 3576 * 3577 *@hide pending API council approval. 3578 */ 3579 public WebViewClient getWebViewClient() { 3580 return mCallbackProxy.getWebViewClient(); 3581 } 3582 3583 /** 3584 * Register the interface to be used when content can not be handled by 3585 * the rendering engine, and should be downloaded instead. This will replace 3586 * the current handler. 3587 * @param listener An implementation of DownloadListener. 3588 */ 3589 public void setDownloadListener(DownloadListener listener) { 3590 mCallbackProxy.setDownloadListener(listener); 3591 } 3592 3593 /** 3594 * Set the chrome handler. This is an implementation of WebChromeClient for 3595 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3596 * This will replace the current handler. 3597 * @param client An implementation of WebChromeClient. 3598 */ 3599 public void setWebChromeClient(WebChromeClient client) { 3600 mCallbackProxy.setWebChromeClient(client); 3601 } 3602 3603 /** 3604 * Gets the chrome handler. 3605 * @return the current WebChromeClient instance. 3606 * 3607 * @hide API council approval. 3608 */ 3609 public WebChromeClient getWebChromeClient() { 3610 return mCallbackProxy.getWebChromeClient(); 3611 } 3612 3613 /** 3614 * Set the back/forward list client. This is an implementation of 3615 * WebBackForwardListClient for handling new items and changes in the 3616 * history index. 3617 * @param client An implementation of WebBackForwardListClient. 3618 * {@hide} 3619 */ 3620 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3621 mCallbackProxy.setWebBackForwardListClient(client); 3622 } 3623 3624 /** 3625 * Gets the WebBackForwardListClient. 3626 * {@hide} 3627 */ 3628 public WebBackForwardListClient getWebBackForwardListClient() { 3629 return mCallbackProxy.getWebBackForwardListClient(); 3630 } 3631 3632 /** 3633 * Set the Picture listener. This is an interface used to receive 3634 * notifications of a new Picture. 3635 * @param listener An implementation of WebView.PictureListener. 3636 * @deprecated This method is now obsolete. 3637 */ 3638 @Deprecated 3639 public void setPictureListener(PictureListener listener) { 3640 mPictureListener = listener; 3641 } 3642 3643 /** 3644 * {@hide} 3645 */ 3646 /* FIXME: Debug only! Remove for SDK! */ 3647 public void externalRepresentation(Message callback) { 3648 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3649 } 3650 3651 /** 3652 * {@hide} 3653 */ 3654 /* FIXME: Debug only! Remove for SDK! */ 3655 public void documentAsText(Message callback) { 3656 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3657 } 3658 3659 /** 3660 * Use this function to bind an object to JavaScript so that the 3661 * methods can be accessed from JavaScript. 3662 * <p><strong>IMPORTANT:</strong> 3663 * <ul> 3664 * <li> Using addJavascriptInterface() allows JavaScript to control your 3665 * application. This can be a very useful feature or a dangerous security 3666 * issue. When the HTML in the WebView is untrustworthy (for example, part 3667 * or all of the HTML is provided by some person or process), then an 3668 * attacker could inject HTML that will execute your code and possibly any 3669 * code of the attacker's choosing.<br> 3670 * Do not use addJavascriptInterface() unless all of the HTML in this 3671 * WebView was written by you.</li> 3672 * <li> The Java object that is bound runs in another thread and not in 3673 * the thread that it was constructed in.</li> 3674 * </ul></p> 3675 * @param obj The class instance to bind to JavaScript, null instances are 3676 * ignored. 3677 * @param interfaceName The name to used to expose the instance in 3678 * JavaScript. 3679 */ 3680 public void addJavascriptInterface(Object obj, String interfaceName) { 3681 if (obj == null) { 3682 return; 3683 } 3684 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3685 arg.mObject = obj; 3686 arg.mInterfaceName = interfaceName; 3687 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3688 } 3689 3690 /** 3691 * Removes a previously added JavaScript interface with the given name. 3692 * @param interfaceName The name of the interface to remove. 3693 */ 3694 public void removeJavascriptInterface(String interfaceName) { 3695 if (mWebViewCore != null) { 3696 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3697 arg.mInterfaceName = interfaceName; 3698 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 3699 } 3700 } 3701 3702 /** 3703 * Return the WebSettings object used to control the settings for this 3704 * WebView. 3705 * @return A WebSettings object that can be used to control this WebView's 3706 * settings. 3707 */ 3708 public WebSettings getSettings() { 3709 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3710 } 3711 3712 /** 3713 * Return the list of currently loaded plugins. 3714 * @return The list of currently loaded plugins. 3715 * 3716 * @hide 3717 * @deprecated This was used for Gears, which has been deprecated. 3718 */ 3719 @Deprecated 3720 public static synchronized PluginList getPluginList() { 3721 return new PluginList(); 3722 } 3723 3724 /** 3725 * @hide 3726 * @deprecated This was used for Gears, which has been deprecated. 3727 */ 3728 @Deprecated 3729 public void refreshPlugins(boolean reloadOpenPages) { } 3730 3731 //------------------------------------------------------------------------- 3732 // Override View methods 3733 //------------------------------------------------------------------------- 3734 3735 @Override 3736 protected void finalize() throws Throwable { 3737 try { 3738 destroy(); 3739 } finally { 3740 super.finalize(); 3741 } 3742 } 3743 3744 @Override 3745 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3746 if (child == mTitleBar) { 3747 // When drawing the title bar, move it horizontally to always show 3748 // at the top of the WebView. 3749 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3750 int newTop = 0; 3751 if (mTitleGravity == Gravity.NO_GRAVITY) { 3752 newTop = Math.min(0, mScrollY); 3753 } else if (mTitleGravity == Gravity.TOP) { 3754 newTop = mScrollY; 3755 } 3756 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 3757 mTitleBar.setTop(newTop); 3758 } 3759 return super.drawChild(canvas, child, drawingTime); 3760 } 3761 3762 private void drawContent(Canvas canvas) { 3763 // Update the buttons in the picture, so when we draw the picture 3764 // to the screen, they are in the correct state. 3765 // Tell the native side if user is a) touching the screen, 3766 // b) pressing the trackball down, or c) pressing the enter key 3767 // If the cursor is on a button, we need to draw it in the pressed 3768 // state. 3769 // If mNativeClass is 0, we should not reach here, so we do not 3770 // need to check it again. 3771 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3772 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3773 || mTrackballDown || mGotCenterDown, false); 3774 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3775 } 3776 3777 /** 3778 * Draw the background when beyond bounds 3779 * @param canvas Canvas to draw into 3780 */ 3781 private void drawOverScrollBackground(Canvas canvas) { 3782 if (mOverScrollBackground == null) { 3783 mOverScrollBackground = new Paint(); 3784 Bitmap bm = BitmapFactory.decodeResource( 3785 mContext.getResources(), 3786 com.android.internal.R.drawable.status_bar_background); 3787 mOverScrollBackground.setShader(new BitmapShader(bm, 3788 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3789 mOverScrollBorder = new Paint(); 3790 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3791 mOverScrollBorder.setStrokeWidth(0); 3792 mOverScrollBorder.setColor(0xffbbbbbb); 3793 } 3794 3795 int top = 0; 3796 int right = computeRealHorizontalScrollRange(); 3797 int bottom = top + computeRealVerticalScrollRange(); 3798 // first draw the background and anchor to the top of the view 3799 canvas.save(); 3800 canvas.translate(mScrollX, mScrollY); 3801 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3802 - mScrollY, Region.Op.DIFFERENCE); 3803 canvas.drawPaint(mOverScrollBackground); 3804 canvas.restore(); 3805 // then draw the border 3806 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3807 // next clip the region for the content 3808 canvas.clipRect(0, top, right, bottom); 3809 } 3810 3811 @Override 3812 protected void onDraw(Canvas canvas) { 3813 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3814 if (mNativeClass == 0) { 3815 return; 3816 } 3817 3818 // if both mContentWidth and mContentHeight are 0, it means there is no 3819 // valid Picture passed to WebView yet. This can happen when WebView 3820 // just starts. Draw the background and return. 3821 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3822 canvas.drawColor(mBackgroundColor); 3823 return; 3824 } 3825 3826 if (canvas.isHardwareAccelerated()) { 3827 mZoomManager.setHardwareAccelerated(); 3828 } 3829 3830 int saveCount = canvas.save(); 3831 if (mInOverScrollMode && !getSettings() 3832 .getUseWebViewBackgroundForOverscrollBackground()) { 3833 drawOverScrollBackground(canvas); 3834 } 3835 if (mTitleBar != null) { 3836 canvas.translate(0, getTitleHeight()); 3837 } 3838 drawContent(canvas); 3839 canvas.restoreToCount(saveCount); 3840 3841 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3842 invalidate(); 3843 } 3844 if (inEditingMode()) { 3845 mWebTextView.onDrawSubstitute(); 3846 } 3847 mWebViewCore.signalRepaintDone(); 3848 3849 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 3850 invalidate(); 3851 } 3852 3853 // paint the highlight in the end 3854 if (!mTouchHighlightRegion.isEmpty()) { 3855 if (mTouchHightlightPaint == null) { 3856 mTouchHightlightPaint = new Paint(); 3857 mTouchHightlightPaint.setColor(mHightlightColor); 3858 mTouchHightlightPaint.setAntiAlias(true); 3859 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3860 TOUCH_HIGHLIGHT_ARC)); 3861 } 3862 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3863 mTouchHightlightPaint); 3864 } 3865 if (DEBUG_TOUCH_HIGHLIGHT) { 3866 if (getSettings().getNavDump()) { 3867 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3868 if (mTouchCrossHairColor == null) { 3869 mTouchCrossHairColor = new Paint(); 3870 mTouchCrossHairColor.setColor(Color.RED); 3871 } 3872 canvas.drawLine(mTouchHighlightX - mNavSlop, 3873 mTouchHighlightY - mNavSlop, mTouchHighlightX 3874 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3875 + 1, mTouchCrossHairColor); 3876 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3877 mTouchHighlightY - mNavSlop, mTouchHighlightX 3878 - mNavSlop, 3879 mTouchHighlightY + mNavSlop + 1, 3880 mTouchCrossHairColor); 3881 } 3882 } 3883 } 3884 } 3885 3886 private void removeTouchHighlight(boolean removePendingMessage) { 3887 if (removePendingMessage) { 3888 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3889 } 3890 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3891 } 3892 3893 @Override 3894 public void setLayoutParams(ViewGroup.LayoutParams params) { 3895 if (params.height == LayoutParams.WRAP_CONTENT) { 3896 mWrapContent = true; 3897 } 3898 super.setLayoutParams(params); 3899 } 3900 3901 @Override 3902 public boolean performLongClick() { 3903 // performLongClick() is the result of a delayed message. If we switch 3904 // to windows overview, the WebView will be temporarily removed from the 3905 // view system. In that case, do nothing. 3906 if (getParent() == null) return false; 3907 3908 // A multi-finger gesture can look like a long press; make sure we don't take 3909 // long press actions if we're scaling. 3910 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 3911 if (detector != null && detector.isInProgress()) { 3912 return false; 3913 } 3914 3915 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3916 // Send the click so that the textfield is in focus 3917 centerKeyPressOnTextField(); 3918 rebuildWebTextView(); 3919 } else { 3920 clearTextEntry(); 3921 } 3922 if (inEditingMode()) { 3923 // Since we just called rebuildWebTextView, the layout is not set 3924 // properly. Update it so it can correctly find the word to select. 3925 mWebTextView.ensureLayout(); 3926 // Provide a touch down event to WebTextView, which will allow it 3927 // to store the location to use in performLongClick. 3928 AbsoluteLayout.LayoutParams params 3929 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 3930 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 3931 mLastTouchTime, MotionEvent.ACTION_DOWN, 3932 mLastTouchX - params.x + mScrollX, 3933 mLastTouchY - params.y + mScrollY, 0); 3934 mWebTextView.dispatchTouchEvent(fake); 3935 return mWebTextView.performLongClick(); 3936 } 3937 if (mSelectingText) return false; // long click does nothing on selection 3938 /* if long click brings up a context menu, the super function 3939 * returns true and we're done. Otherwise, nothing happened when 3940 * the user clicked. */ 3941 if (super.performLongClick()) { 3942 return true; 3943 } 3944 /* In the case where the application hasn't already handled the long 3945 * click action, look for a word under the click. If one is found, 3946 * animate the text selection into view. 3947 * FIXME: no animation code yet */ 3948 return selectText(); 3949 } 3950 3951 /** 3952 * Select the word at the last click point. 3953 * 3954 * @hide pending API council approval 3955 */ 3956 public boolean selectText() { 3957 int x = viewToContentX(mLastTouchX + mScrollX); 3958 int y = viewToContentY(mLastTouchY + mScrollY); 3959 return selectText(x, y); 3960 } 3961 3962 /** 3963 * Select the word at the indicated content coordinates. 3964 */ 3965 boolean selectText(int x, int y) { 3966 if (!setUpSelect(true, x, y)) { 3967 return false; 3968 } 3969 nativeSetExtendSelection(); 3970 mDrawSelectionPointer = false; 3971 mSelectionStarted = true; 3972 mTouchMode = TOUCH_DRAG_MODE; 3973 return true; 3974 } 3975 3976 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 3977 3978 @Override 3979 protected void onConfigurationChanged(Configuration newConfig) { 3980 if (mSelectingText && mOrientation != newConfig.orientation) { 3981 selectionDone(); 3982 } 3983 mOrientation = newConfig.orientation; 3984 } 3985 3986 /** 3987 * Keep track of the Callback so we can end its ActionMode or remove its 3988 * titlebar. 3989 */ 3990 private SelectActionModeCallback mSelectCallback; 3991 3992 // These values are possible options for didUpdateWebTextViewDimensions. 3993 private static final int FULLY_ON_SCREEN = 0; 3994 private static final int INTERSECTS_SCREEN = 1; 3995 private static final int ANYWHERE = 2; 3996 3997 /** 3998 * Check to see if the focused textfield/textarea is still on screen. If it 3999 * is, update the the dimensions and location of WebTextView. Otherwise, 4000 * remove the WebTextView. Should be called when the zoom level changes. 4001 * @param intersection How to determine whether the textfield/textarea is 4002 * still on screen. 4003 * @return boolean True if the textfield/textarea is still on screen and the 4004 * dimensions/location of WebTextView have been updated. 4005 */ 4006 private boolean didUpdateWebTextViewDimensions(int intersection) { 4007 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4008 Rect vBox = contentToViewRect(contentBounds); 4009 Rect visibleRect = new Rect(); 4010 calcOurVisibleRect(visibleRect); 4011 // If the textfield is on screen, place the WebTextView in 4012 // its new place, accounting for our new scroll/zoom values, 4013 // and adjust its textsize. 4014 boolean onScreen; 4015 switch (intersection) { 4016 case FULLY_ON_SCREEN: 4017 onScreen = visibleRect.contains(vBox); 4018 break; 4019 case INTERSECTS_SCREEN: 4020 onScreen = Rect.intersects(visibleRect, vBox); 4021 break; 4022 case ANYWHERE: 4023 onScreen = true; 4024 break; 4025 default: 4026 throw new AssertionError( 4027 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4028 } 4029 if (onScreen) { 4030 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4031 vBox.height()); 4032 mWebTextView.updateTextSize(); 4033 updateWebTextViewPadding(); 4034 return true; 4035 } else { 4036 // The textfield is now off screen. The user probably 4037 // was not zooming to see the textfield better. Remove 4038 // the WebTextView. If the user types a key, and the 4039 // textfield is still in focus, we will reconstruct 4040 // the WebTextView and scroll it back on screen. 4041 mWebTextView.remove(); 4042 return false; 4043 } 4044 } 4045 4046 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4047 boolean isPictureAfterFirstLayout) { 4048 if (mNativeClass == 0) 4049 return; 4050 nativeSetBaseLayer(layer, invalRegion, showVisualIndicator, 4051 isPictureAfterFirstLayout); 4052 if (mHTML5VideoViewProxy != null) { 4053 mHTML5VideoViewProxy.setBaseLayer(layer); 4054 } 4055 } 4056 4057 private void onZoomAnimationStart() { 4058 // If it is in password mode, turn it off so it does not draw misplaced. 4059 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4060 mWebTextView.setInPassword(false); 4061 } 4062 } 4063 4064 private void onZoomAnimationEnd() { 4065 // adjust the edit text view if needed 4066 if (inEditingMode() && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN) 4067 && nativeFocusCandidateIsPassword()) { 4068 // If it is a password field, start drawing the WebTextView once 4069 // again. 4070 mWebTextView.setInPassword(true); 4071 } 4072 } 4073 4074 void onFixedLengthZoomAnimationStart() { 4075 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4076 onZoomAnimationStart(); 4077 } 4078 4079 void onFixedLengthZoomAnimationEnd() { 4080 if (!mSelectingText) { 4081 WebViewCore.resumeUpdatePicture(mWebViewCore); 4082 } 4083 onZoomAnimationEnd(); 4084 } 4085 4086 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4087 Paint.DITHER_FLAG | 4088 Paint.SUBPIXEL_TEXT_FLAG; 4089 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4090 Paint.DITHER_FLAG; 4091 4092 private final DrawFilter mZoomFilter = 4093 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4094 // If we need to trade better quality for speed, set mScrollFilter to null 4095 private final DrawFilter mScrollFilter = 4096 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4097 4098 private void drawCoreAndCursorRing(Canvas canvas, int color, 4099 boolean drawCursorRing) { 4100 if (mDrawHistory) { 4101 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4102 canvas.drawPicture(mHistoryPicture); 4103 return; 4104 } 4105 if (mNativeClass == 0) return; 4106 4107 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4108 boolean animateScroll = ((!mScroller.isFinished() 4109 || mVelocityTracker != null) 4110 && (mTouchMode != TOUCH_DRAG_MODE || 4111 mHeldMotionless != MOTIONLESS_TRUE)) 4112 || mDeferTouchMode == TOUCH_DRAG_MODE; 4113 if (mTouchMode == TOUCH_DRAG_MODE) { 4114 if (mHeldMotionless == MOTIONLESS_PENDING) { 4115 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4116 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4117 mHeldMotionless = MOTIONLESS_FALSE; 4118 } 4119 if (mHeldMotionless == MOTIONLESS_FALSE) { 4120 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4121 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4122 mHeldMotionless = MOTIONLESS_PENDING; 4123 } 4124 } 4125 if (animateZoom) { 4126 mZoomManager.animateZoom(canvas); 4127 } else if (!canvas.isHardwareAccelerated()) { 4128 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4129 } 4130 4131 boolean UIAnimationsRunning = false; 4132 // Currently for each draw we compute the animation values; 4133 // We may in the future decide to do that independently. 4134 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 4135 UIAnimationsRunning = true; 4136 // If we have unfinished (or unstarted) animations, 4137 // we ask for a repaint. We only need to do this in software 4138 // rendering (with hardware rendering we already have a different 4139 // method of requesting a repaint) 4140 if (!canvas.isHardwareAccelerated()) 4141 invalidate(); 4142 } 4143 4144 // decide which adornments to draw 4145 int extras = DRAW_EXTRAS_NONE; 4146 if (mFindIsUp) { 4147 extras = DRAW_EXTRAS_FIND; 4148 } else if (mSelectingText) { 4149 extras = DRAW_EXTRAS_SELECTION; 4150 nativeSetSelectionPointer(mDrawSelectionPointer, 4151 mZoomManager.getInvScale(), 4152 mSelectX, mSelectY - getTitleHeight()); 4153 } else if (drawCursorRing) { 4154 extras = DRAW_EXTRAS_CURSOR_RING; 4155 } 4156 if (DebugFlags.WEB_VIEW) { 4157 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4158 + " mSelectingText=" + mSelectingText 4159 + " nativePageShouldHandleShiftAndArrows()=" 4160 + nativePageShouldHandleShiftAndArrows() 4161 + " animateZoom=" + animateZoom 4162 + " extras=" + extras); 4163 } 4164 4165 if (canvas.isHardwareAccelerated()) { 4166 int functor = nativeGetDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 4167 mGLViewportEmpty ? null : mViewRectViewport, getScale(), extras); 4168 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4169 } else { 4170 DrawFilter df = null; 4171 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4172 df = mZoomFilter; 4173 } else if (animateScroll) { 4174 df = mScrollFilter; 4175 } 4176 canvas.setDrawFilter(df); 4177 // XXX: Revisit splitting content. Right now it causes a 4178 // synchronization problem with layers. 4179 int content = nativeDraw(canvas, color, extras, false); 4180 canvas.setDrawFilter(null); 4181 if (content != 0) { 4182 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4183 } 4184 } 4185 4186 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4187 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4188 mTouchMode = TOUCH_SHORTPRESS_MODE; 4189 } 4190 } 4191 if (mFocusSizeChanged) { 4192 mFocusSizeChanged = false; 4193 // If we are zooming, this will get handled above, when the zoom 4194 // finishes. We also do not need to do this unless the WebTextView 4195 // is showing. 4196 if (!animateZoom && inEditingMode()) { 4197 didUpdateWebTextViewDimensions(ANYWHERE); 4198 } 4199 } 4200 } 4201 4202 // draw history 4203 private boolean mDrawHistory = false; 4204 private Picture mHistoryPicture = null; 4205 private int mHistoryWidth = 0; 4206 private int mHistoryHeight = 0; 4207 4208 // Only check the flag, can be called from WebCore thread 4209 boolean drawHistory() { 4210 return mDrawHistory; 4211 } 4212 4213 int getHistoryPictureWidth() { 4214 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4215 } 4216 4217 // Should only be called in UI thread 4218 void switchOutDrawHistory() { 4219 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4220 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4221 mDrawHistory = false; 4222 mHistoryPicture = null; 4223 invalidate(); 4224 int oldScrollX = mScrollX; 4225 int oldScrollY = mScrollY; 4226 mScrollX = pinLocX(mScrollX); 4227 mScrollY = pinLocY(mScrollY); 4228 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4229 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4230 } else { 4231 sendOurVisibleRect(); 4232 } 4233 } 4234 } 4235 4236 WebViewCore.CursorData cursorData() { 4237 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4238 result.mMoveGeneration = nativeMoveGeneration(); 4239 result.mFrame = nativeCursorFramePointer(); 4240 Point position = nativeCursorPosition(); 4241 result.mX = position.x; 4242 result.mY = position.y; 4243 return result; 4244 } 4245 4246 /** 4247 * Delete text from start to end in the focused textfield. If there is no 4248 * focus, or if start == end, silently fail. If start and end are out of 4249 * order, swap them. 4250 * @param start Beginning of selection to delete. 4251 * @param end End of selection to delete. 4252 */ 4253 /* package */ void deleteSelection(int start, int end) { 4254 mTextGeneration++; 4255 WebViewCore.TextSelectionData data 4256 = new WebViewCore.TextSelectionData(start, end); 4257 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4258 data); 4259 } 4260 4261 /** 4262 * Set the selection to (start, end) in the focused textfield. If start and 4263 * end are out of order, swap them. 4264 * @param start Beginning of selection. 4265 * @param end End of selection. 4266 */ 4267 /* package */ void setSelection(int start, int end) { 4268 if (mWebViewCore != null) { 4269 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4270 } 4271 } 4272 4273 @Override 4274 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4275 InputConnection connection = super.onCreateInputConnection(outAttrs); 4276 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4277 return connection; 4278 } 4279 4280 /** 4281 * Called in response to a message from webkit telling us that the soft 4282 * keyboard should be launched. 4283 */ 4284 private void displaySoftKeyboard(boolean isTextView) { 4285 InputMethodManager imm = (InputMethodManager) 4286 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4287 4288 // bring it back to the default level scale so that user can enter text 4289 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4290 if (zoom) { 4291 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4292 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4293 } 4294 if (isTextView) { 4295 rebuildWebTextView(); 4296 if (inEditingMode()) { 4297 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 4298 if (zoom) { 4299 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4300 } 4301 return; 4302 } 4303 } 4304 // Used by plugins and contentEditable. 4305 // Also used if the navigation cache is out of date, and 4306 // does not recognize that a textfield is in focus. In that 4307 // case, use WebView as the targeted view. 4308 // see http://b/issue?id=2457459 4309 imm.showSoftInput(this, 0); 4310 } 4311 4312 // Called by WebKit to instruct the UI to hide the keyboard 4313 private void hideSoftKeyboard() { 4314 InputMethodManager imm = InputMethodManager.peekInstance(); 4315 if (imm != null && (imm.isActive(this) 4316 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4317 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4318 } 4319 } 4320 4321 /* 4322 * This method checks the current focus and cursor and potentially rebuilds 4323 * mWebTextView to have the appropriate properties, such as password, 4324 * multiline, and what text it contains. It also removes it if necessary. 4325 */ 4326 /* package */ void rebuildWebTextView() { 4327 // If the WebView does not have focus, do nothing until it gains focus. 4328 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4329 return; 4330 } 4331 boolean alreadyThere = inEditingMode(); 4332 // inEditingMode can only return true if mWebTextView is non-null, 4333 // so we can safely call remove() if (alreadyThere) 4334 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4335 if (alreadyThere) { 4336 mWebTextView.remove(); 4337 } 4338 return; 4339 } 4340 // At this point, we know we have found an input field, so go ahead 4341 // and create the WebTextView if necessary. 4342 if (mWebTextView == null) { 4343 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4344 // Initialize our generation number. 4345 mTextGeneration = 0; 4346 } 4347 mWebTextView.updateTextSize(); 4348 Rect visibleRect = new Rect(); 4349 calcOurContentVisibleRect(visibleRect); 4350 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4351 // should be in content coordinates. 4352 Rect bounds = nativeFocusCandidateNodeBounds(); 4353 Rect vBox = contentToViewRect(bounds); 4354 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4355 if (!Rect.intersects(bounds, visibleRect)) { 4356 revealSelection(); 4357 } 4358 String text = nativeFocusCandidateText(); 4359 int nodePointer = nativeFocusCandidatePointer(); 4360 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 4361 // It is possible that we have the same textfield, but it has moved, 4362 // i.e. In the case of opening/closing the screen. 4363 // In that case, we need to set the dimensions, but not the other 4364 // aspects. 4365 // If the text has been changed by webkit, update it. However, if 4366 // there has been more UI text input, ignore it. We will receive 4367 // another update when that text is recognized. 4368 if (text != null && !text.equals(mWebTextView.getText().toString()) 4369 && nativeTextGeneration() == mTextGeneration) { 4370 mWebTextView.setTextAndKeepSelection(text); 4371 } 4372 } else { 4373 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 4374 Gravity.RIGHT : Gravity.NO_GRAVITY); 4375 // This needs to be called before setType, which may call 4376 // requestFormData, and it needs to have the correct nodePointer. 4377 mWebTextView.setNodePointer(nodePointer); 4378 mWebTextView.setType(nativeFocusCandidateType()); 4379 updateWebTextViewPadding(); 4380 if (null == text) { 4381 if (DebugFlags.WEB_VIEW) { 4382 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4383 } 4384 text = ""; 4385 } 4386 mWebTextView.setTextAndKeepSelection(text); 4387 InputMethodManager imm = InputMethodManager.peekInstance(); 4388 if (imm != null && imm.isActive(mWebTextView)) { 4389 imm.restartInput(mWebTextView); 4390 } 4391 } 4392 if (isFocused()) { 4393 mWebTextView.requestFocus(); 4394 } 4395 } 4396 4397 /** 4398 * Update the padding of mWebTextView based on the native textfield/textarea 4399 */ 4400 void updateWebTextViewPadding() { 4401 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4402 if (paddingRect != null) { 4403 // Use contentToViewDimension since these are the dimensions of 4404 // the padding. 4405 mWebTextView.setPadding( 4406 contentToViewDimension(paddingRect.left), 4407 contentToViewDimension(paddingRect.top), 4408 contentToViewDimension(paddingRect.right), 4409 contentToViewDimension(paddingRect.bottom)); 4410 } 4411 } 4412 4413 /** 4414 * Tell webkit to put the cursor on screen. 4415 */ 4416 /* package */ void revealSelection() { 4417 if (mWebViewCore != null) { 4418 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4419 } 4420 } 4421 4422 /** 4423 * Called by WebTextView to find saved form data associated with the 4424 * textfield 4425 * @param name Name of the textfield. 4426 * @param nodePointer Pointer to the node of the textfield, so it can be 4427 * compared to the currently focused textfield when the data is 4428 * retrieved. 4429 * @param autoFillable true if WebKit has determined this field is part of 4430 * a form that can be auto filled. 4431 * @param autoComplete true if the attribute "autocomplete" is set to true 4432 * on the textfield. 4433 */ 4434 /* package */ void requestFormData(String name, int nodePointer, 4435 boolean autoFillable, boolean autoComplete) { 4436 if (mWebViewCore.getSettings().getSaveFormData()) { 4437 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4438 update.arg1 = nodePointer; 4439 RequestFormData updater = new RequestFormData(name, getUrl(), 4440 update, autoFillable, autoComplete); 4441 Thread t = new Thread(updater); 4442 t.start(); 4443 } 4444 } 4445 4446 /** 4447 * Pass a message to find out the <label> associated with the <input> 4448 * identified by nodePointer 4449 * @param framePointer Pointer to the frame containing the <input> node 4450 * @param nodePointer Pointer to the node for which a <label> is desired. 4451 */ 4452 /* package */ void requestLabel(int framePointer, int nodePointer) { 4453 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4454 nodePointer); 4455 } 4456 4457 /* 4458 * This class requests an Adapter for the WebTextView which shows past 4459 * entries stored in the database. It is a Runnable so that it can be done 4460 * in its own thread, without slowing down the UI. 4461 */ 4462 private class RequestFormData implements Runnable { 4463 private String mName; 4464 private String mUrl; 4465 private Message mUpdateMessage; 4466 private boolean mAutoFillable; 4467 private boolean mAutoComplete; 4468 4469 public RequestFormData(String name, String url, Message msg, 4470 boolean autoFillable, boolean autoComplete) { 4471 mName = name; 4472 mUrl = url; 4473 mUpdateMessage = msg; 4474 mAutoFillable = autoFillable; 4475 mAutoComplete = autoComplete; 4476 } 4477 4478 public void run() { 4479 ArrayList<String> pastEntries = new ArrayList<String>(); 4480 4481 if (mAutoFillable) { 4482 // Note that code inside the adapter click handler in WebTextView depends 4483 // on the AutoFill item being at the top of the drop down list. If you change 4484 // the order, make sure to do it there too! 4485 WebSettings settings = getSettings(); 4486 if (settings != null && settings.getAutoFillProfile() != null) { 4487 pastEntries.add(getResources().getText( 4488 com.android.internal.R.string.autofill_this_form).toString() + 4489 " " + 4490 mAutoFillData.getPreviewString()); 4491 mWebTextView.setAutoFillProfileIsSet(true); 4492 } else { 4493 // There is no autofill profile set up yet, so add an option that 4494 // will invite the user to set their profile up. 4495 pastEntries.add(getResources().getText( 4496 com.android.internal.R.string.setup_autofill).toString()); 4497 mWebTextView.setAutoFillProfileIsSet(false); 4498 } 4499 } 4500 4501 if (mAutoComplete) { 4502 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4503 } 4504 4505 if (pastEntries.size() > 0) { 4506 AutoCompleteAdapter adapter = new 4507 AutoCompleteAdapter(mContext, pastEntries); 4508 mUpdateMessage.obj = adapter; 4509 mUpdateMessage.sendToTarget(); 4510 } 4511 } 4512 } 4513 4514 /** 4515 * Dump the display tree to "/sdcard/displayTree.txt" 4516 * 4517 * @hide debug only 4518 */ 4519 public void dumpDisplayTree() { 4520 nativeDumpDisplayTree(getUrl()); 4521 } 4522 4523 /** 4524 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4525 * "/sdcard/domTree.txt" 4526 * 4527 * @hide debug only 4528 */ 4529 public void dumpDomTree(boolean toFile) { 4530 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4531 } 4532 4533 /** 4534 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4535 * to "/sdcard/renderTree.txt" 4536 * 4537 * @hide debug only 4538 */ 4539 public void dumpRenderTree(boolean toFile) { 4540 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4541 } 4542 4543 /** 4544 * Called by DRT on UI thread, need to proxy to WebCore thread. 4545 * 4546 * @hide debug only 4547 */ 4548 public void useMockDeviceOrientation() { 4549 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4550 } 4551 4552 /** 4553 * Called by DRT on WebCore thread. 4554 * 4555 * @hide debug only 4556 */ 4557 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4558 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4559 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4560 canProvideGamma, gamma); 4561 } 4562 4563 /** 4564 * Dump the V8 counters to standard output. 4565 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4566 * true. Otherwise, this will do nothing. 4567 * 4568 * @hide debug only 4569 */ 4570 public void dumpV8Counters() { 4571 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4572 } 4573 4574 // This is used to determine long press with the center key. Does not 4575 // affect long press with the trackball/touch. 4576 private boolean mGotCenterDown = false; 4577 4578 @Override 4579 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4580 // send complex characters to webkit for use by JS and plugins 4581 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4582 // pass the key to DOM 4583 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4584 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4585 // return true as DOM handles the key 4586 return true; 4587 } 4588 return false; 4589 } 4590 4591 private boolean isEnterActionKey(int keyCode) { 4592 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 4593 || keyCode == KeyEvent.KEYCODE_ENTER 4594 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 4595 } 4596 4597 @Override 4598 public boolean onKeyDown(int keyCode, KeyEvent event) { 4599 if (DebugFlags.WEB_VIEW) { 4600 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4601 + "keyCode=" + keyCode 4602 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4603 } 4604 4605 // don't implement accelerator keys here; defer to host application 4606 if (event.isCtrlPressed()) { 4607 return false; 4608 } 4609 4610 if (mNativeClass == 0) { 4611 return false; 4612 } 4613 4614 // do this hack up front, so it always works, regardless of touch-mode 4615 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4616 mAutoRedraw = !mAutoRedraw; 4617 if (mAutoRedraw) { 4618 invalidate(); 4619 } 4620 return true; 4621 } 4622 4623 // Bubble up the key event if 4624 // 1. it is a system key; or 4625 // 2. the host application wants to handle it; 4626 if (event.isSystem() 4627 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4628 return false; 4629 } 4630 4631 // accessibility support 4632 if (accessibilityScriptInjected()) { 4633 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4634 // if an accessibility script is injected we delegate to it the key handling. 4635 // this script is a screen reader which is a fully fledged solution for blind 4636 // users to navigate in and interact with web pages. 4637 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4638 return true; 4639 } else { 4640 // Clean up if accessibility was disabled after loading the current URL. 4641 mAccessibilityScriptInjected = false; 4642 } 4643 } else if (mAccessibilityInjector != null) { 4644 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4645 if (mAccessibilityInjector.onKeyEvent(event)) { 4646 // if an accessibility injector is present (no JavaScript enabled or the site 4647 // opts out injecting our JavaScript screen reader) we let it decide whether 4648 // to act on and consume the event. 4649 return true; 4650 } 4651 } else { 4652 // Clean up if accessibility was disabled after loading the current URL. 4653 mAccessibilityInjector = null; 4654 } 4655 } 4656 4657 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4658 if (event.hasNoModifiers()) { 4659 pageUp(false); 4660 return true; 4661 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4662 pageUp(true); 4663 return true; 4664 } 4665 } 4666 4667 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4668 if (event.hasNoModifiers()) { 4669 pageDown(false); 4670 return true; 4671 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4672 pageDown(true); 4673 return true; 4674 } 4675 } 4676 4677 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 4678 pageUp(true); 4679 return true; 4680 } 4681 4682 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 4683 pageDown(true); 4684 return true; 4685 } 4686 4687 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4688 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4689 switchOutDrawHistory(); 4690 if (nativePageShouldHandleShiftAndArrows()) { 4691 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 4692 return true; 4693 } 4694 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4695 switch (keyCode) { 4696 case KeyEvent.KEYCODE_DPAD_UP: 4697 pageUp(true); 4698 return true; 4699 case KeyEvent.KEYCODE_DPAD_DOWN: 4700 pageDown(true); 4701 return true; 4702 case KeyEvent.KEYCODE_DPAD_LEFT: 4703 nativeClearCursor(); // start next trackball movement from page edge 4704 return pinScrollTo(0, mScrollY, true, 0); 4705 case KeyEvent.KEYCODE_DPAD_RIGHT: 4706 nativeClearCursor(); // start next trackball movement from page edge 4707 return pinScrollTo(mContentWidth, mScrollY, true, 0); 4708 } 4709 } 4710 if (mSelectingText) { 4711 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4712 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4713 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4714 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4715 int multiplier = event.getRepeatCount() + 1; 4716 moveSelection(xRate * multiplier, yRate * multiplier); 4717 return true; 4718 } 4719 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4720 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4721 return true; 4722 } 4723 // Bubble up the key event as WebView doesn't handle it 4724 return false; 4725 } 4726 4727 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4728 switchOutDrawHistory(); 4729 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 4730 || nativeCursorWantsKeyEvents(); 4731 if (event.getRepeatCount() == 0) { 4732 if (mSelectingText) { 4733 return true; // discard press if copy in progress 4734 } 4735 mGotCenterDown = true; 4736 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4737 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4738 // Already checked mNativeClass, so we do not need to check it 4739 // again. 4740 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4741 if (!wantsKeyEvents) return true; 4742 } 4743 // Bubble up the key event as WebView doesn't handle it 4744 if (!wantsKeyEvents) return false; 4745 } 4746 4747 if (getSettings().getNavDump()) { 4748 switch (keyCode) { 4749 case KeyEvent.KEYCODE_4: 4750 dumpDisplayTree(); 4751 break; 4752 case KeyEvent.KEYCODE_5: 4753 case KeyEvent.KEYCODE_6: 4754 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4755 break; 4756 case KeyEvent.KEYCODE_7: 4757 case KeyEvent.KEYCODE_8: 4758 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4759 break; 4760 case KeyEvent.KEYCODE_9: 4761 nativeInstrumentReport(); 4762 return true; 4763 } 4764 } 4765 4766 if (nativeCursorIsTextInput()) { 4767 // This message will put the node in focus, for the DOM's notion 4768 // of focus. 4769 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 4770 nativeCursorNodePointer()); 4771 // This will bring up the WebTextView and put it in focus, for 4772 // our view system's notion of focus 4773 rebuildWebTextView(); 4774 // Now we need to pass the event to it 4775 if (inEditingMode()) { 4776 mWebTextView.setDefaultSelection(); 4777 return mWebTextView.dispatchKeyEvent(event); 4778 } 4779 } else if (nativeHasFocusNode()) { 4780 // In this case, the cursor is not on a text input, but the focus 4781 // might be. Check it, and if so, hand over to the WebTextView. 4782 rebuildWebTextView(); 4783 if (inEditingMode()) { 4784 mWebTextView.setDefaultSelection(); 4785 return mWebTextView.dispatchKeyEvent(event); 4786 } 4787 } 4788 4789 // TODO: should we pass all the keys to DOM or check the meta tag 4790 if (nativeCursorWantsKeyEvents() || true) { 4791 // pass the key to DOM 4792 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4793 // return true as DOM handles the key 4794 return true; 4795 } 4796 4797 // Bubble up the key event as WebView doesn't handle it 4798 return false; 4799 } 4800 4801 @Override 4802 public boolean onKeyUp(int keyCode, KeyEvent event) { 4803 if (DebugFlags.WEB_VIEW) { 4804 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4805 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4806 } 4807 4808 if (mNativeClass == 0) { 4809 return false; 4810 } 4811 4812 // special CALL handling when cursor node's href is "tel:XXX" 4813 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4814 String text = nativeCursorText(); 4815 if (!nativeCursorIsTextInput() && text != null 4816 && text.startsWith(SCHEME_TEL)) { 4817 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4818 getContext().startActivity(intent); 4819 return true; 4820 } 4821 } 4822 4823 // Bubble up the key event if 4824 // 1. it is a system key; or 4825 // 2. the host application wants to handle it; 4826 if (event.isSystem() 4827 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4828 return false; 4829 } 4830 4831 // accessibility support 4832 if (accessibilityScriptInjected()) { 4833 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4834 // if an accessibility script is injected we delegate to it the key handling. 4835 // this script is a screen reader which is a fully fledged solution for blind 4836 // users to navigate in and interact with web pages. 4837 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4838 return true; 4839 } else { 4840 // Clean up if accessibility was disabled after loading the current URL. 4841 mAccessibilityScriptInjected = false; 4842 } 4843 } else if (mAccessibilityInjector != null) { 4844 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4845 if (mAccessibilityInjector.onKeyEvent(event)) { 4846 // if an accessibility injector is present (no JavaScript enabled or the site 4847 // opts out injecting our JavaScript screen reader) we let it decide whether to 4848 // act on and consume the event. 4849 return true; 4850 } 4851 } else { 4852 // Clean up if accessibility was disabled after loading the current URL. 4853 mAccessibilityInjector = null; 4854 } 4855 } 4856 4857 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4858 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4859 if (nativePageShouldHandleShiftAndArrows()) { 4860 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 4861 return true; 4862 } 4863 // always handle the navigation keys in the UI thread 4864 // Bubble up the key event as WebView doesn't handle it 4865 return false; 4866 } 4867 4868 if (isEnterActionKey(keyCode)) { 4869 // remove the long press message first 4870 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4871 mGotCenterDown = false; 4872 4873 if (mSelectingText) { 4874 if (mExtendSelection) { 4875 copySelection(); 4876 selectionDone(); 4877 } else { 4878 mExtendSelection = true; 4879 nativeSetExtendSelection(); 4880 invalidate(); // draw the i-beam instead of the arrow 4881 } 4882 return true; // discard press if copy in progress 4883 } 4884 4885 // perform the single click 4886 Rect visibleRect = sendOurVisibleRect(); 4887 // Note that sendOurVisibleRect calls viewToContent, so the 4888 // coordinates should be in content coordinates. 4889 if (!nativeCursorIntersects(visibleRect)) { 4890 return false; 4891 } 4892 WebViewCore.CursorData data = cursorData(); 4893 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4894 playSoundEffect(SoundEffectConstants.CLICK); 4895 if (nativeCursorIsTextInput()) { 4896 rebuildWebTextView(); 4897 centerKeyPressOnTextField(); 4898 if (inEditingMode()) { 4899 mWebTextView.setDefaultSelection(); 4900 } 4901 return true; 4902 } 4903 clearTextEntry(); 4904 nativeShowCursorTimed(); 4905 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4906 return true; 4907 } 4908 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 4909 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4910 nativeCursorNodePointer()); 4911 return true; 4912 } 4913 } 4914 4915 // TODO: should we pass all the keys to DOM or check the meta tag 4916 if (nativeCursorWantsKeyEvents() || true) { 4917 // pass the key to DOM 4918 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4919 // return true as DOM handles the key 4920 return true; 4921 } 4922 4923 // Bubble up the key event as WebView doesn't handle it 4924 return false; 4925 } 4926 4927 /* 4928 * Enter selecting text mode, and see if CAB should be shown. 4929 * Returns true if the WebView is now in 4930 * selecting text mode (including if it was already in that mode, and this 4931 * method did nothing). 4932 */ 4933 private boolean setUpSelect(boolean selectWord, int x, int y) { 4934 if (0 == mNativeClass) return false; // client isn't initialized 4935 if (inFullScreenMode()) return false; 4936 if (mSelectingText) return true; 4937 nativeResetSelection(); 4938 if (selectWord && !nativeWordSelection(x, y)) { 4939 selectionDone(); 4940 return false; 4941 } 4942 mSelectCallback = new SelectActionModeCallback(); 4943 mSelectCallback.setWebView(this); 4944 if (startActionMode(mSelectCallback) == null) { 4945 // There is no ActionMode, so do not allow the user to modify a 4946 // selection. 4947 selectionDone(); 4948 return false; 4949 } 4950 mExtendSelection = false; 4951 mSelectingText = mDrawSelectionPointer = true; 4952 // don't let the picture change during text selection 4953 WebViewCore.pauseUpdatePicture(mWebViewCore); 4954 if (nativeHasCursorNode()) { 4955 Rect rect = nativeCursorNodeBounds(); 4956 mSelectX = contentToViewX(rect.left); 4957 mSelectY = contentToViewY(rect.top); 4958 } else if (mLastTouchY > getVisibleTitleHeight()) { 4959 mSelectX = mScrollX + mLastTouchX; 4960 mSelectY = mScrollY + mLastTouchY; 4961 } else { 4962 mSelectX = mScrollX + getViewWidth() / 2; 4963 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4964 } 4965 nativeHideCursor(); 4966 mMinAutoScrollX = 0; 4967 mMaxAutoScrollX = getViewWidth(); 4968 mMinAutoScrollY = 0; 4969 mMaxAutoScrollY = getViewHeightWithTitle(); 4970 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 4971 viewToContentY(mSelectY), mScrollingLayerRect, 4972 mScrollingLayerBounds); 4973 if (mScrollingLayer != 0) { 4974 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 4975 mMinAutoScrollX = Math.max(mMinAutoScrollX, 4976 contentToViewX(mScrollingLayerBounds.left)); 4977 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 4978 contentToViewX(mScrollingLayerBounds.right)); 4979 } 4980 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 4981 mMinAutoScrollY = Math.max(mMinAutoScrollY, 4982 contentToViewY(mScrollingLayerBounds.top)); 4983 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 4984 contentToViewY(mScrollingLayerBounds.bottom)); 4985 } 4986 } 4987 mMinAutoScrollX += SELECT_SCROLL; 4988 mMaxAutoScrollX -= SELECT_SCROLL; 4989 mMinAutoScrollY += SELECT_SCROLL; 4990 mMaxAutoScrollY -= SELECT_SCROLL; 4991 return true; 4992 } 4993 4994 /** 4995 * Use this method to put the WebView into text selection mode. 4996 * Do not rely on this functionality; it will be deprecated in the future. 4997 * @deprecated This method is now obsolete. 4998 */ 4999 @Deprecated 5000 public void emulateShiftHeld() { 5001 setUpSelect(false, 0, 0); 5002 } 5003 5004 /** 5005 * Select all of the text in this WebView. 5006 * 5007 * @hide pending API council approval. 5008 */ 5009 public void selectAll() { 5010 if (0 == mNativeClass) return; // client isn't initialized 5011 if (inFullScreenMode()) return; 5012 if (!mSelectingText) { 5013 // retrieve a point somewhere within the text 5014 Point select = nativeSelectableText(); 5015 if (!selectText(select.x, select.y)) return; 5016 } 5017 nativeSelectAll(); 5018 mDrawSelectionPointer = false; 5019 mExtendSelection = true; 5020 invalidate(); 5021 } 5022 5023 /** 5024 * Called when the selection has been removed. 5025 */ 5026 void selectionDone() { 5027 if (mSelectingText) { 5028 mSelectingText = false; 5029 // finish is idempotent, so this is fine even if selectionDone was 5030 // called by mSelectCallback.onDestroyActionMode 5031 mSelectCallback.finish(); 5032 mSelectCallback = null; 5033 WebViewCore.resumePriority(); 5034 WebViewCore.resumeUpdatePicture(mWebViewCore); 5035 invalidate(); // redraw without selection 5036 mAutoScrollX = 0; 5037 mAutoScrollY = 0; 5038 mSentAutoScrollMessage = false; 5039 } 5040 } 5041 5042 /** 5043 * Copy the selection to the clipboard 5044 * 5045 * @hide pending API council approval. 5046 */ 5047 public boolean copySelection() { 5048 boolean copiedSomething = false; 5049 String selection = getSelection(); 5050 if (selection != null && selection != "") { 5051 if (DebugFlags.WEB_VIEW) { 5052 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5053 } 5054 Toast.makeText(mContext 5055 , com.android.internal.R.string.text_copied 5056 , Toast.LENGTH_SHORT).show(); 5057 copiedSomething = true; 5058 ClipboardManager cm = (ClipboardManager)getContext() 5059 .getSystemService(Context.CLIPBOARD_SERVICE); 5060 cm.setText(selection); 5061 } 5062 invalidate(); // remove selection region and pointer 5063 return copiedSomething; 5064 } 5065 5066 /** 5067 * @hide pending API Council approval. 5068 */ 5069 public SearchBox getSearchBox() { 5070 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5071 return null; 5072 } 5073 return mWebViewCore.getBrowserFrame().getSearchBox(); 5074 } 5075 5076 /** 5077 * Returns the currently highlighted text as a string. 5078 */ 5079 String getSelection() { 5080 if (mNativeClass == 0) return ""; 5081 return nativeGetSelection(); 5082 } 5083 5084 @Override 5085 protected void onAttachedToWindow() { 5086 super.onAttachedToWindow(); 5087 if (hasWindowFocus()) setActive(true); 5088 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5089 if (mGlobalLayoutListener == null) { 5090 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5091 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5092 } 5093 if (mScrollChangedListener == null) { 5094 mScrollChangedListener = new InnerScrollChangedListener(); 5095 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5096 } 5097 5098 addAccessibilityApisToJavaScript(); 5099 5100 mTouchEventQueue.reset(); 5101 } 5102 5103 @Override 5104 protected void onDetachedFromWindow() { 5105 clearHelpers(); 5106 mZoomManager.dismissZoomPicker(); 5107 if (hasWindowFocus()) setActive(false); 5108 5109 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5110 if (mGlobalLayoutListener != null) { 5111 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5112 mGlobalLayoutListener = null; 5113 } 5114 if (mScrollChangedListener != null) { 5115 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5116 mScrollChangedListener = null; 5117 } 5118 5119 removeAccessibilityApisFromJavaScript(); 5120 5121 super.onDetachedFromWindow(); 5122 } 5123 5124 @Override 5125 protected void onVisibilityChanged(View changedView, int visibility) { 5126 super.onVisibilityChanged(changedView, visibility); 5127 // The zoomManager may be null if the webview is created from XML that 5128 // specifies the view's visibility param as not visible (see http://b/2794841) 5129 if (visibility != View.VISIBLE && mZoomManager != null) { 5130 mZoomManager.dismissZoomPicker(); 5131 } 5132 } 5133 5134 /** 5135 * @deprecated WebView no longer needs to implement 5136 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5137 */ 5138 @Deprecated 5139 public void onChildViewAdded(View parent, View child) {} 5140 5141 /** 5142 * @deprecated WebView no longer needs to implement 5143 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5144 */ 5145 @Deprecated 5146 public void onChildViewRemoved(View p, View child) {} 5147 5148 /** 5149 * @deprecated WebView should not have implemented 5150 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5151 */ 5152 @Deprecated 5153 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5154 } 5155 5156 void setActive(boolean active) { 5157 if (active) { 5158 if (hasFocus()) { 5159 // If our window regained focus, and we have focus, then begin 5160 // drawing the cursor ring 5161 mDrawCursorRing = true; 5162 setFocusControllerActive(true); 5163 if (mNativeClass != 0) { 5164 nativeRecordButtons(true, false, true); 5165 } 5166 } else { 5167 if (!inEditingMode()) { 5168 // If our window gained focus, but we do not have it, do not 5169 // draw the cursor ring. 5170 mDrawCursorRing = false; 5171 setFocusControllerActive(false); 5172 } 5173 // We do not call nativeRecordButtons here because we assume 5174 // that when we lost focus, or window focus, it got called with 5175 // false for the first parameter 5176 } 5177 } else { 5178 if (!mZoomManager.isZoomPickerVisible()) { 5179 /* 5180 * The external zoom controls come in their own window, so our 5181 * window loses focus. Our policy is to not draw the cursor ring 5182 * if our window is not focused, but this is an exception since 5183 * the user can still navigate the web page with the zoom 5184 * controls showing. 5185 */ 5186 mDrawCursorRing = false; 5187 } 5188 mKeysPressed.clear(); 5189 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5190 mTouchMode = TOUCH_DONE_MODE; 5191 if (mNativeClass != 0) { 5192 nativeRecordButtons(false, false, true); 5193 } 5194 setFocusControllerActive(false); 5195 } 5196 invalidate(); 5197 } 5198 5199 // To avoid drawing the cursor ring, and remove the TextView when our window 5200 // loses focus. 5201 @Override 5202 public void onWindowFocusChanged(boolean hasWindowFocus) { 5203 setActive(hasWindowFocus); 5204 if (hasWindowFocus) { 5205 JWebCoreJavaBridge.setActiveWebView(this); 5206 } else { 5207 JWebCoreJavaBridge.removeActiveWebView(this); 5208 } 5209 super.onWindowFocusChanged(hasWindowFocus); 5210 } 5211 5212 /* 5213 * Pass a message to WebCore Thread, telling the WebCore::Page's 5214 * FocusController to be "inactive" so that it will 5215 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5216 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5217 */ 5218 /* package */ void setFocusControllerActive(boolean active) { 5219 if (mWebViewCore == null) return; 5220 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5221 // Need to send this message after the document regains focus. 5222 if (active && mListBoxMessage != null) { 5223 mWebViewCore.sendMessage(mListBoxMessage); 5224 mListBoxMessage = null; 5225 } 5226 } 5227 5228 @Override 5229 protected void onFocusChanged(boolean focused, int direction, 5230 Rect previouslyFocusedRect) { 5231 if (DebugFlags.WEB_VIEW) { 5232 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5233 } 5234 if (focused) { 5235 // When we regain focus, if we have window focus, resume drawing 5236 // the cursor ring 5237 if (hasWindowFocus()) { 5238 mDrawCursorRing = true; 5239 if (mNativeClass != 0) { 5240 nativeRecordButtons(true, false, true); 5241 } 5242 setFocusControllerActive(true); 5243 //} else { 5244 // The WebView has gained focus while we do not have 5245 // windowfocus. When our window lost focus, we should have 5246 // called nativeRecordButtons(false...) 5247 } 5248 } else { 5249 // When we lost focus, unless focus went to the TextView (which is 5250 // true if we are in editing mode), stop drawing the cursor ring. 5251 if (!inEditingMode()) { 5252 mDrawCursorRing = false; 5253 if (mNativeClass != 0) { 5254 nativeRecordButtons(false, false, true); 5255 } 5256 setFocusControllerActive(false); 5257 } 5258 mKeysPressed.clear(); 5259 } 5260 5261 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5262 } 5263 5264 void setGLRectViewport() { 5265 // Use the getGlobalVisibleRect() to get the intersection among the parents 5266 // visible == false means we're clipped - send a null rect down to indicate that 5267 // we should not draw 5268 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5269 if (visible) { 5270 // Then need to invert the Y axis, just for GL 5271 View rootView = getRootView(); 5272 int rootViewHeight = rootView.getHeight(); 5273 mViewRectViewport.set(mGLRectViewport); 5274 int savedWebViewBottom = mGLRectViewport.bottom; 5275 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeight(); 5276 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5277 mGLViewportEmpty = false; 5278 } else { 5279 mGLViewportEmpty = true; 5280 } 5281 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 5282 mGLViewportEmpty ? null : mViewRectViewport); 5283 } 5284 5285 /** 5286 * @hide 5287 */ 5288 @Override 5289 protected boolean setFrame(int left, int top, int right, int bottom) { 5290 boolean changed = super.setFrame(left, top, right, bottom); 5291 if (!changed && mHeightCanMeasure) { 5292 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5293 // in WebViewCore after we get the first layout. We do call 5294 // requestLayout() when we get contentSizeChanged(). But the View 5295 // system won't call onSizeChanged if the dimension is not changed. 5296 // In this case, we need to call sendViewSizeZoom() explicitly to 5297 // notify the WebKit about the new dimensions. 5298 sendViewSizeZoom(false); 5299 } 5300 setGLRectViewport(); 5301 return changed; 5302 } 5303 5304 @Override 5305 protected void onSizeChanged(int w, int h, int ow, int oh) { 5306 super.onSizeChanged(w, h, ow, oh); 5307 5308 // adjust the max viewport width depending on the view dimensions. This 5309 // is to ensure the scaling is not going insane. So do not shrink it if 5310 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5311 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5312 if (newMaxViewportWidth > sMaxViewportWidth) { 5313 sMaxViewportWidth = newMaxViewportWidth; 5314 } 5315 5316 mZoomManager.onSizeChanged(w, h, ow, oh); 5317 } 5318 5319 @Override 5320 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5321 super.onScrollChanged(l, t, oldl, oldt); 5322 if (!mInOverScrollMode) { 5323 sendOurVisibleRect(); 5324 // update WebKit if visible title bar height changed. The logic is same 5325 // as getVisibleTitleHeight. 5326 int titleHeight = getTitleHeight(); 5327 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5328 sendViewSizeZoom(false); 5329 } 5330 } 5331 } 5332 5333 @Override 5334 public boolean dispatchKeyEvent(KeyEvent event) { 5335 switch (event.getAction()) { 5336 case KeyEvent.ACTION_DOWN: 5337 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5338 break; 5339 case KeyEvent.ACTION_MULTIPLE: 5340 // Always accept the action. 5341 break; 5342 case KeyEvent.ACTION_UP: 5343 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5344 if (location == -1) { 5345 // We did not receive the key down for this key, so do not 5346 // handle the key up. 5347 return false; 5348 } else { 5349 // We did receive the key down. Handle the key up, and 5350 // remove it from our pressed keys. 5351 mKeysPressed.remove(location); 5352 } 5353 break; 5354 default: 5355 // Accept the action. This should not happen, unless a new 5356 // action is added to KeyEvent. 5357 break; 5358 } 5359 if (inEditingMode() && mWebTextView.isFocused()) { 5360 // Ensure that the WebTextView gets the event, even if it does 5361 // not currently have a bounds. 5362 return mWebTextView.dispatchKeyEvent(event); 5363 } else { 5364 return super.dispatchKeyEvent(event); 5365 } 5366 } 5367 5368 // Here are the snap align logic: 5369 // 1. If it starts nearly horizontally or vertically, snap align; 5370 // 2. If there is a dramitic direction change, let it go; 5371 // 3. If there is a same direction back and forth, lock it. 5372 5373 // adjustable parameters 5374 private int mMinLockSnapReverseDistance; 5375 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 5376 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 5377 5378 private boolean hitFocusedPlugin(int contentX, int contentY) { 5379 if (DebugFlags.WEB_VIEW) { 5380 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5381 Rect r = nativeFocusNodeBounds(); 5382 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5383 + ", " + r.right + ", " + r.bottom + ")"); 5384 } 5385 return nativeFocusIsPlugin() 5386 && nativeFocusNodeBounds().contains(contentX, contentY); 5387 } 5388 5389 private boolean shouldForwardTouchEvent() { 5390 return mFullScreenHolder != null || (mForwardTouchEvents 5391 && !mSelectingText 5392 && mPreventDefault != PREVENT_DEFAULT_IGNORE 5393 && mPreventDefault != PREVENT_DEFAULT_NO); 5394 } 5395 5396 private boolean inFullScreenMode() { 5397 return mFullScreenHolder != null; 5398 } 5399 5400 private void dismissFullScreenMode() { 5401 if (inFullScreenMode()) { 5402 mFullScreenHolder.dismiss(); 5403 mFullScreenHolder = null; 5404 } 5405 } 5406 5407 void onPinchToZoomAnimationStart() { 5408 // cancel the single touch handling 5409 cancelTouch(); 5410 onZoomAnimationStart(); 5411 } 5412 5413 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5414 onZoomAnimationEnd(); 5415 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5416 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5417 // as it may trigger the unwanted fling. 5418 mTouchMode = TOUCH_PINCH_DRAG; 5419 mConfirmMove = true; 5420 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5421 } 5422 5423 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5424 // layer is found. 5425 private void startScrollingLayer(float x, float y) { 5426 int contentX = viewToContentX((int) x + mScrollX); 5427 int contentY = viewToContentY((int) y + mScrollY); 5428 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5429 mScrollingLayerRect, mScrollingLayerBounds); 5430 if (mScrollingLayer != 0) { 5431 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5432 } 5433 } 5434 5435 // 1/(density * density) used to compute the distance between points. 5436 // Computed in init(). 5437 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5438 5439 // The distance between two points reported in onTouchEvent scaled by the 5440 // density of the screen. 5441 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5442 5443 @Override 5444 public boolean onTouchEvent(MotionEvent ev) { 5445 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5446 return false; 5447 } 5448 5449 if (DebugFlags.WEB_VIEW) { 5450 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5451 + " mTouchMode=" + mTouchMode 5452 + " numPointers=" + ev.getPointerCount()); 5453 } 5454 5455 // If WebKit wasn't interested in this multitouch gesture, enqueue 5456 // the event for handling directly rather than making the round trip 5457 // to WebKit and back. 5458 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 5459 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 5460 } else { 5461 mTouchEventQueue.enqueueTouchEvent(ev); 5462 } 5463 5464 // Since all events are handled asynchronously, we always want the gesture stream. 5465 return true; 5466 } 5467 5468 /* 5469 * Common code for single touch and multi-touch. 5470 * (x, y) denotes current focus point, which is the touch point for single touch 5471 * and the middle point for multi-touch. 5472 */ 5473 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 5474 long eventTime = ev.getEventTime(); 5475 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.mMetaState = ev.getMetaState(); 5581 ted.mReprocess = mDeferTouchProcess; 5582 ted.mNativeLayer = nativeScrollableLayer( 5583 contentX, contentY, ted.mNativeLayerRect, null); 5584 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5585 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5586 if (mDeferTouchProcess) { 5587 // still needs to set them for compute deltaX/Y 5588 mLastTouchX = x; 5589 mLastTouchY = y; 5590 break; 5591 } 5592 if (!inFullScreenMode()) { 5593 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5594 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5595 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5596 action, 0), TAP_TIMEOUT); 5597 } 5598 } 5599 } 5600 startTouch(x, y, eventTime); 5601 break; 5602 } 5603 case MotionEvent.ACTION_MOVE: { 5604 boolean firstMove = false; 5605 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5606 >= mTouchSlopSquare) { 5607 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5608 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5609 mConfirmMove = true; 5610 firstMove = true; 5611 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5612 mTouchMode = TOUCH_INIT_MODE; 5613 } 5614 if (getSettings().supportTouchOnly()) { 5615 removeTouchHighlight(true); 5616 } 5617 } 5618 // pass the touch events from UI thread to WebCore thread 5619 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5620 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5621 TouchEventData ted = new TouchEventData(); 5622 ted.mAction = action; 5623 ted.mIds = new int[1]; 5624 ted.mIds[0] = ev.getPointerId(0); 5625 ted.mPoints = new Point[1]; 5626 ted.mPoints[0] = new Point(contentX, contentY); 5627 ted.mMetaState = ev.getMetaState(); 5628 ted.mReprocess = mDeferTouchProcess; 5629 ted.mNativeLayer = mScrollingLayer; 5630 ted.mNativeLayerRect.set(mScrollingLayerRect); 5631 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5632 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5633 mLastSentTouchTime = eventTime; 5634 if (mDeferTouchProcess) { 5635 break; 5636 } 5637 if (firstMove && !inFullScreenMode()) { 5638 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5639 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5640 action, 0), TAP_TIMEOUT); 5641 } 5642 } 5643 if (mTouchMode == TOUCH_DONE_MODE 5644 || mPreventDefault == PREVENT_DEFAULT_YES) { 5645 // no dragging during scroll zoom animation, or when prevent 5646 // default is yes 5647 break; 5648 } 5649 if (mVelocityTracker == null) { 5650 Log.e(LOGTAG, "Got null mVelocityTracker when " 5651 + "mPreventDefault = " + mPreventDefault 5652 + " mDeferTouchProcess = " + mDeferTouchProcess 5653 + " mTouchMode = " + mTouchMode); 5654 } else { 5655 mVelocityTracker.addMovement(ev); 5656 } 5657 if (mSelectingText && mSelectionStarted) { 5658 if (DebugFlags.WEB_VIEW) { 5659 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5660 } 5661 ViewParent parent = getParent(); 5662 if (parent != null) { 5663 parent.requestDisallowInterceptTouchEvent(true); 5664 } 5665 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 5666 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 5667 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 5668 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 5669 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 5670 && !mSentAutoScrollMessage) { 5671 mSentAutoScrollMessage = true; 5672 mPrivateHandler.sendEmptyMessageDelayed( 5673 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 5674 } 5675 if (deltaX != 0 || deltaY != 0) { 5676 nativeExtendSelection(contentX, contentY); 5677 invalidate(); 5678 } 5679 break; 5680 } 5681 5682 if (mTouchMode != TOUCH_DRAG_MODE && 5683 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5684 5685 if (!mConfirmMove) { 5686 break; 5687 } 5688 5689 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5690 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5691 // track mLastTouchTime as we may need to do fling at 5692 // ACTION_UP 5693 mLastTouchTime = eventTime; 5694 break; 5695 } 5696 5697 // Only lock dragging to one axis if we don't have a scale in progress. 5698 // Scaling implies free-roaming movement. Note this is only ever a question 5699 // if mZoomManager.supportsPanDuringZoom() is true. 5700 final ScaleGestureDetector detector = 5701 mZoomManager.getMultiTouchGestureDetector(); 5702 if (detector == null || !detector.isInProgress()) { 5703 // if it starts nearly horizontal or vertical, enforce it 5704 int ax = Math.abs(deltaX); 5705 int ay = Math.abs(deltaY); 5706 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5707 mSnapScrollMode = SNAP_X; 5708 mSnapPositive = deltaX > 0; 5709 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5710 mSnapScrollMode = SNAP_Y; 5711 mSnapPositive = deltaY > 0; 5712 } 5713 } 5714 5715 mTouchMode = TOUCH_DRAG_MODE; 5716 mLastTouchX = x; 5717 mLastTouchY = y; 5718 deltaX = 0; 5719 deltaY = 0; 5720 5721 startScrollingLayer(x, y); 5722 startDrag(); 5723 } 5724 5725 // do pan 5726 boolean done = false; 5727 boolean keepScrollBarsVisible = false; 5728 if (deltaX == 0 && deltaY == 0) { 5729 keepScrollBarsVisible = done = true; 5730 } else { 5731 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5732 int ax = Math.abs(deltaX); 5733 int ay = Math.abs(deltaY); 5734 if (mSnapScrollMode == SNAP_X) { 5735 // radical change means getting out of snap mode 5736 if (ay > MAX_SLOPE_FOR_DIAG * ax 5737 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5738 mSnapScrollMode = SNAP_NONE; 5739 } 5740 // reverse direction means lock in the snap mode 5741 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5742 (mSnapPositive 5743 ? deltaX < -mMinLockSnapReverseDistance 5744 : deltaX > mMinLockSnapReverseDistance)) { 5745 mSnapScrollMode |= SNAP_LOCK; 5746 } 5747 } else { 5748 // radical change means getting out of snap mode 5749 if (ax > MAX_SLOPE_FOR_DIAG * ay 5750 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5751 mSnapScrollMode = SNAP_NONE; 5752 } 5753 // reverse direction means lock in the snap mode 5754 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5755 (mSnapPositive 5756 ? deltaY < -mMinLockSnapReverseDistance 5757 : deltaY > mMinLockSnapReverseDistance)) { 5758 mSnapScrollMode |= SNAP_LOCK; 5759 } 5760 } 5761 } 5762 if (mSnapScrollMode != SNAP_NONE) { 5763 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5764 deltaY = 0; 5765 } else { 5766 deltaX = 0; 5767 } 5768 } 5769 if ((deltaX | deltaY) != 0) { 5770 if (deltaX != 0) { 5771 mLastTouchX = x; 5772 } 5773 if (deltaY != 0) { 5774 mLastTouchY = y; 5775 } 5776 mHeldMotionless = MOTIONLESS_FALSE; 5777 } 5778 mLastTouchTime = eventTime; 5779 } 5780 5781 doDrag(deltaX, deltaY); 5782 5783 // Turn off scrollbars when dragging a layer. 5784 if (keepScrollBarsVisible && 5785 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5786 if (mHeldMotionless != MOTIONLESS_TRUE) { 5787 mHeldMotionless = MOTIONLESS_TRUE; 5788 invalidate(); 5789 } 5790 // keep the scrollbar on the screen even there is no scroll 5791 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5792 false); 5793 // return false to indicate that we can't pan out of the 5794 // view space 5795 return !done; 5796 } 5797 break; 5798 } 5799 case MotionEvent.ACTION_UP: { 5800 if (!isFocused()) requestFocus(); 5801 // pass the touch events from UI thread to WebCore thread 5802 if (shouldForwardTouchEvent()) { 5803 TouchEventData ted = new TouchEventData(); 5804 ted.mIds = new int[1]; 5805 ted.mIds[0] = ev.getPointerId(0); 5806 ted.mAction = action; 5807 ted.mPoints = new Point[1]; 5808 ted.mPoints[0] = new Point(contentX, contentY); 5809 ted.mMetaState = ev.getMetaState(); 5810 ted.mReprocess = mDeferTouchProcess; 5811 ted.mNativeLayer = mScrollingLayer; 5812 ted.mNativeLayerRect.set(mScrollingLayerRect); 5813 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5814 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5815 } 5816 mLastTouchUpTime = eventTime; 5817 if (mSentAutoScrollMessage) { 5818 mAutoScrollX = mAutoScrollY = 0; 5819 } 5820 switch (mTouchMode) { 5821 case TOUCH_DOUBLE_TAP_MODE: // double tap 5822 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5823 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5824 if (inFullScreenMode() || mDeferTouchProcess) { 5825 TouchEventData ted = new TouchEventData(); 5826 ted.mIds = new int[1]; 5827 ted.mIds[0] = ev.getPointerId(0); 5828 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5829 ted.mPoints = new Point[1]; 5830 ted.mPoints[0] = new Point(contentX, contentY); 5831 ted.mMetaState = ev.getMetaState(); 5832 ted.mReprocess = mDeferTouchProcess; 5833 ted.mNativeLayer = nativeScrollableLayer( 5834 contentX, contentY, 5835 ted.mNativeLayerRect, null); 5836 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5837 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5838 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5839 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5840 mTouchMode = TOUCH_DONE_MODE; 5841 } 5842 break; 5843 case TOUCH_INIT_MODE: // tap 5844 case TOUCH_SHORTPRESS_START_MODE: 5845 case TOUCH_SHORTPRESS_MODE: 5846 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5847 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5848 if (mConfirmMove) { 5849 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5850 " WebCore's response for touch down."); 5851 if (mPreventDefault != PREVENT_DEFAULT_YES 5852 && (computeMaxScrollX() > 0 5853 || computeMaxScrollY() > 0)) { 5854 // If the user has performed a very quick touch 5855 // sequence it is possible that we may get here 5856 // before WebCore has had a chance to process the events. 5857 // In this case, any call to preventDefault in the 5858 // JS touch handler will not have been executed yet. 5859 // Hence we will see both the UI (now) and WebCore 5860 // (when context switches) handling the event, 5861 // regardless of whether the web developer actually 5862 // doeses preventDefault in their touch handler. This 5863 // is the nature of our asynchronous touch model. 5864 5865 // we will not rewrite drag code here, but we 5866 // will try fling if it applies. 5867 WebViewCore.reducePriority(); 5868 // to get better performance, pause updating the 5869 // picture 5870 WebViewCore.pauseUpdatePicture(mWebViewCore); 5871 // fall through to TOUCH_DRAG_MODE 5872 } else { 5873 // WebKit may consume the touch event and modify 5874 // DOM. drawContentPicture() will be called with 5875 // animateSroll as true for better performance. 5876 // Force redraw in high-quality. 5877 invalidate(); 5878 break; 5879 } 5880 } else { 5881 if (mSelectingText) { 5882 // tapping on selection or controls does nothing 5883 if (!nativeHitSelection(contentX, contentY)) { 5884 selectionDone(); 5885 } 5886 break; 5887 } 5888 // only trigger double tap if the WebView is 5889 // scalable 5890 if (mTouchMode == TOUCH_INIT_MODE 5891 && (canZoomIn() || canZoomOut())) { 5892 mPrivateHandler.sendEmptyMessageDelayed( 5893 RELEASE_SINGLE_TAP, ViewConfiguration 5894 .getDoubleTapTimeout()); 5895 } else { 5896 doShortPress(); 5897 } 5898 break; 5899 } 5900 case TOUCH_DRAG_MODE: 5901 case TOUCH_DRAG_LAYER_MODE: 5902 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5903 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5904 // if the user waits a while w/o moving before the 5905 // up, we don't want to do a fling 5906 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5907 if (mVelocityTracker == null) { 5908 Log.e(LOGTAG, "Got null mVelocityTracker when " 5909 + "mPreventDefault = " 5910 + mPreventDefault 5911 + " mDeferTouchProcess = " 5912 + mDeferTouchProcess); 5913 } else { 5914 mVelocityTracker.addMovement(ev); 5915 } 5916 // set to MOTIONLESS_IGNORE so that it won't keep 5917 // removing and sending message in 5918 // drawCoreAndCursorRing() 5919 mHeldMotionless = MOTIONLESS_IGNORE; 5920 doFling(); 5921 break; 5922 } else { 5923 if (mScroller.springBack(mScrollX, mScrollY, 0, 5924 computeMaxScrollX(), 0, 5925 computeMaxScrollY())) { 5926 invalidate(); 5927 } 5928 } 5929 // redraw in high-quality, as we're done dragging 5930 mHeldMotionless = MOTIONLESS_TRUE; 5931 invalidate(); 5932 // fall through 5933 case TOUCH_DRAG_START_MODE: 5934 // TOUCH_DRAG_START_MODE should not happen for the real 5935 // device as we almost certain will get a MOVE. But this 5936 // is possible on emulator. 5937 mLastVelocity = 0; 5938 WebViewCore.resumePriority(); 5939 if (!mSelectingText) { 5940 WebViewCore.resumeUpdatePicture(mWebViewCore); 5941 } 5942 break; 5943 } 5944 stopTouch(); 5945 break; 5946 } 5947 case MotionEvent.ACTION_CANCEL: { 5948 if (mTouchMode == TOUCH_DRAG_MODE) { 5949 mScroller.springBack(mScrollX, mScrollY, 0, 5950 computeMaxScrollX(), 0, computeMaxScrollY()); 5951 invalidate(); 5952 } 5953 cancelWebCoreTouchEvent(contentX, contentY, false); 5954 cancelTouch(); 5955 break; 5956 } 5957 } 5958 return true; 5959 } 5960 5961 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 5962 TouchEventData ted = new TouchEventData(); 5963 ted.mAction = ev.getActionMasked(); 5964 final int count = ev.getPointerCount(); 5965 ted.mIds = new int[count]; 5966 ted.mPoints = new Point[count]; 5967 for (int c = 0; c < count; c++) { 5968 ted.mIds[c] = ev.getPointerId(c); 5969 int x = viewToContentX((int) ev.getX(c) + mScrollX); 5970 int y = viewToContentY((int) ev.getY(c) + mScrollY); 5971 ted.mPoints[c] = new Point(x, y); 5972 } 5973 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 5974 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 5975 ted.mActionIndex = ev.getActionIndex(); 5976 } 5977 ted.mMetaState = ev.getMetaState(); 5978 ted.mReprocess = true; 5979 ted.mMotionEvent = MotionEvent.obtain(ev); 5980 ted.mSequence = sequence; 5981 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5982 cancelLongPress(); 5983 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5984 } 5985 5986 void handleMultiTouchInWebView(MotionEvent ev) { 5987 if (DebugFlags.WEB_VIEW) { 5988 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 5989 + " mTouchMode=" + mTouchMode 5990 + " numPointers=" + ev.getPointerCount() 5991 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 5992 } 5993 5994 final ScaleGestureDetector detector = 5995 mZoomManager.getMultiTouchGestureDetector(); 5996 5997 // A few apps use WebView but don't instantiate gesture detector. 5998 // We don't need to support multi touch for them. 5999 if (detector == null) return; 6000 6001 float x = ev.getX(); 6002 float y = ev.getY(); 6003 6004 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6005 detector.onTouchEvent(ev); 6006 6007 if (detector.isInProgress()) { 6008 if (DebugFlags.WEB_VIEW) { 6009 Log.v(LOGTAG, "detector is in progress"); 6010 } 6011 mLastTouchTime = ev.getEventTime(); 6012 x = detector.getFocusX(); 6013 y = detector.getFocusY(); 6014 6015 cancelLongPress(); 6016 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6017 if (!mZoomManager.supportsPanDuringZoom()) { 6018 return; 6019 } 6020 mTouchMode = TOUCH_DRAG_MODE; 6021 if (mVelocityTracker == null) { 6022 mVelocityTracker = VelocityTracker.obtain(); 6023 } 6024 } 6025 } 6026 6027 int action = ev.getActionMasked(); 6028 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6029 cancelTouch(); 6030 action = MotionEvent.ACTION_DOWN; 6031 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() == 2) { 6032 // set mLastTouchX/Y to the remaining point 6033 mLastTouchX = Math.round(x); 6034 mLastTouchY = Math.round(y); 6035 } else if (action == MotionEvent.ACTION_MOVE) { 6036 // negative x or y indicate it is on the edge, skip it. 6037 if (x < 0 || y < 0) { 6038 return; 6039 } 6040 } 6041 6042 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6043 } 6044 6045 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6046 if (shouldForwardTouchEvent()) { 6047 if (removeEvents) { 6048 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6049 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 6050 } 6051 TouchEventData ted = new TouchEventData(); 6052 ted.mIds = new int[1]; 6053 ted.mIds[0] = 0; 6054 ted.mPoints = new Point[1]; 6055 ted.mPoints[0] = new Point(x, y); 6056 ted.mAction = MotionEvent.ACTION_CANCEL; 6057 ted.mNativeLayer = nativeScrollableLayer( 6058 x, y, ted.mNativeLayerRect, null); 6059 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6060 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6061 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6062 } 6063 } 6064 6065 private void startTouch(float x, float y, long eventTime) { 6066 // Remember where the motion event started 6067 mLastTouchX = Math.round(x); 6068 mLastTouchY = Math.round(y); 6069 mLastTouchTime = eventTime; 6070 mVelocityTracker = VelocityTracker.obtain(); 6071 mSnapScrollMode = SNAP_NONE; 6072 } 6073 6074 private void startDrag() { 6075 WebViewCore.reducePriority(); 6076 // to get better performance, pause updating the picture 6077 WebViewCore.pauseUpdatePicture(mWebViewCore); 6078 if (!mDragFromTextInput) { 6079 nativeHideCursor(); 6080 } 6081 6082 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6083 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6084 mZoomManager.invokeZoomPicker(); 6085 } 6086 } 6087 6088 private void doDrag(int deltaX, int deltaY) { 6089 if ((deltaX | deltaY) != 0) { 6090 int oldX = mScrollX; 6091 int oldY = mScrollY; 6092 int rangeX = computeMaxScrollX(); 6093 int rangeY = computeMaxScrollY(); 6094 int overscrollDistance = mOverscrollDistance; 6095 6096 // Check for the original scrolling layer in case we change 6097 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6098 // reached the edge of a layer but mScrollingLayer will be non-zero 6099 // if we initiated the drag on a layer. 6100 if (mScrollingLayer != 0) { 6101 final int contentX = viewToContentDimension(deltaX); 6102 final int contentY = viewToContentDimension(deltaY); 6103 6104 // Check the scrolling bounds to see if we will actually do any 6105 // scrolling. The rectangle is in document coordinates. 6106 final int maxX = mScrollingLayerRect.right; 6107 final int maxY = mScrollingLayerRect.bottom; 6108 final int resultX = Math.max(0, 6109 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6110 final int resultY = Math.max(0, 6111 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6112 6113 if (resultX != mScrollingLayerRect.left || 6114 resultY != mScrollingLayerRect.top) { 6115 // In case we switched to dragging the page. 6116 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6117 deltaX = contentX; 6118 deltaY = contentY; 6119 oldX = mScrollingLayerRect.left; 6120 oldY = mScrollingLayerRect.top; 6121 rangeX = maxX; 6122 rangeY = maxY; 6123 } else { 6124 // Scroll the main page if we are not going to scroll the 6125 // layer. This does not reset mScrollingLayer in case the 6126 // user changes directions and the layer can scroll the 6127 // other way. 6128 mTouchMode = TOUCH_DRAG_MODE; 6129 } 6130 } 6131 6132 if (mOverScrollGlow != null) { 6133 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6134 } 6135 6136 overScrollBy(deltaX, deltaY, oldX, oldY, 6137 rangeX, rangeY, 6138 mOverscrollDistance, mOverscrollDistance, true); 6139 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6140 invalidate(); 6141 } 6142 } 6143 mZoomManager.keepZoomPickerVisible(); 6144 } 6145 6146 private void stopTouch() { 6147 // we also use mVelocityTracker == null to tell us that we are 6148 // not "moving around", so we can take the slower/prettier 6149 // mode in the drawing code 6150 if (mVelocityTracker != null) { 6151 mVelocityTracker.recycle(); 6152 mVelocityTracker = null; 6153 } 6154 6155 // Release any pulled glows 6156 if (mOverScrollGlow != null) { 6157 mOverScrollGlow.releaseAll(); 6158 } 6159 } 6160 6161 private void cancelTouch() { 6162 // we also use mVelocityTracker == null to tell us that we are 6163 // not "moving around", so we can take the slower/prettier 6164 // mode in the drawing code 6165 if (mVelocityTracker != null) { 6166 mVelocityTracker.recycle(); 6167 mVelocityTracker = null; 6168 } 6169 6170 if ((mTouchMode == TOUCH_DRAG_MODE 6171 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6172 WebViewCore.resumePriority(); 6173 WebViewCore.resumeUpdatePicture(mWebViewCore); 6174 } 6175 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6176 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6177 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6178 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6179 if (getSettings().supportTouchOnly()) { 6180 removeTouchHighlight(true); 6181 } 6182 mHeldMotionless = MOTIONLESS_TRUE; 6183 mTouchMode = TOUCH_DONE_MODE; 6184 nativeHideCursor(); 6185 } 6186 6187 @Override 6188 public boolean onGenericMotionEvent(MotionEvent event) { 6189 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 6190 switch (event.getAction()) { 6191 case MotionEvent.ACTION_SCROLL: { 6192 final float vscroll; 6193 final float hscroll; 6194 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 6195 vscroll = 0; 6196 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6197 } else { 6198 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6199 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 6200 } 6201 if (hscroll != 0 || vscroll != 0) { 6202 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 6203 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 6204 if (pinScrollBy(hdelta, vdelta, true, 0)) { 6205 return true; 6206 } 6207 } 6208 } 6209 } 6210 } 6211 return super.onGenericMotionEvent(event); 6212 } 6213 6214 private long mTrackballFirstTime = 0; 6215 private long mTrackballLastTime = 0; 6216 private float mTrackballRemainsX = 0.0f; 6217 private float mTrackballRemainsY = 0.0f; 6218 private int mTrackballXMove = 0; 6219 private int mTrackballYMove = 0; 6220 private boolean mSelectingText = false; 6221 private boolean mSelectionStarted = false; 6222 private boolean mExtendSelection = false; 6223 private boolean mDrawSelectionPointer = false; 6224 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6225 private static final int TRACKBALL_TIMEOUT = 200; 6226 private static final int TRACKBALL_WAIT = 100; 6227 private static final int TRACKBALL_SCALE = 400; 6228 private static final int TRACKBALL_SCROLL_COUNT = 5; 6229 private static final int TRACKBALL_MOVE_COUNT = 10; 6230 private static final int TRACKBALL_MULTIPLIER = 3; 6231 private static final int SELECT_CURSOR_OFFSET = 16; 6232 private static final int SELECT_SCROLL = 5; 6233 private int mSelectX = 0; 6234 private int mSelectY = 0; 6235 private boolean mFocusSizeChanged = false; 6236 private boolean mTrackballDown = false; 6237 private long mTrackballUpTime = 0; 6238 private long mLastCursorTime = 0; 6239 private Rect mLastCursorBounds; 6240 6241 // Set by default; BrowserActivity clears to interpret trackball data 6242 // directly for movement. Currently, the framework only passes 6243 // arrow key events, not trackball events, from one child to the next 6244 private boolean mMapTrackballToArrowKeys = true; 6245 6246 public void setMapTrackballToArrowKeys(boolean setMap) { 6247 mMapTrackballToArrowKeys = setMap; 6248 } 6249 6250 void resetTrackballTime() { 6251 mTrackballLastTime = 0; 6252 } 6253 6254 @Override 6255 public boolean onTrackballEvent(MotionEvent ev) { 6256 long time = ev.getEventTime(); 6257 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6258 if (ev.getY() > 0) pageDown(true); 6259 if (ev.getY() < 0) pageUp(true); 6260 return true; 6261 } 6262 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6263 if (mSelectingText) { 6264 return true; // discard press if copy in progress 6265 } 6266 mTrackballDown = true; 6267 if (mNativeClass == 0) { 6268 return false; 6269 } 6270 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 6271 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6272 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6273 nativeSelectBestAt(mLastCursorBounds); 6274 } 6275 if (DebugFlags.WEB_VIEW) { 6276 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6277 + " time=" + time 6278 + " mLastCursorTime=" + mLastCursorTime); 6279 } 6280 if (isInTouchMode()) requestFocusFromTouch(); 6281 return false; // let common code in onKeyDown at it 6282 } 6283 if (ev.getAction() == MotionEvent.ACTION_UP) { 6284 // LONG_PRESS_CENTER is set in common onKeyDown 6285 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6286 mTrackballDown = false; 6287 mTrackballUpTime = time; 6288 if (mSelectingText) { 6289 if (mExtendSelection) { 6290 copySelection(); 6291 selectionDone(); 6292 } else { 6293 mExtendSelection = true; 6294 nativeSetExtendSelection(); 6295 invalidate(); // draw the i-beam instead of the arrow 6296 } 6297 return true; // discard press if copy in progress 6298 } 6299 if (DebugFlags.WEB_VIEW) { 6300 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6301 + " time=" + time 6302 ); 6303 } 6304 return false; // let common code in onKeyUp at it 6305 } 6306 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6307 AccessibilityManager.getInstance(mContext).isEnabled()) { 6308 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6309 return false; 6310 } 6311 if (mTrackballDown) { 6312 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6313 return true; // discard move if trackball is down 6314 } 6315 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6316 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6317 return true; 6318 } 6319 // TODO: alternatively we can do panning as touch does 6320 switchOutDrawHistory(); 6321 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6322 if (DebugFlags.WEB_VIEW) { 6323 Log.v(LOGTAG, "onTrackballEvent time=" 6324 + time + " last=" + mTrackballLastTime); 6325 } 6326 mTrackballFirstTime = time; 6327 mTrackballXMove = mTrackballYMove = 0; 6328 } 6329 mTrackballLastTime = time; 6330 if (DebugFlags.WEB_VIEW) { 6331 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6332 } 6333 mTrackballRemainsX += ev.getX(); 6334 mTrackballRemainsY += ev.getY(); 6335 doTrackball(time, ev.getMetaState()); 6336 return true; 6337 } 6338 6339 void moveSelection(float xRate, float yRate) { 6340 if (mNativeClass == 0) 6341 return; 6342 int width = getViewWidth(); 6343 int height = getViewHeight(); 6344 mSelectX += xRate; 6345 mSelectY += yRate; 6346 int maxX = width + mScrollX; 6347 int maxY = height + mScrollY; 6348 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6349 , mSelectX)); 6350 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6351 , mSelectY)); 6352 if (DebugFlags.WEB_VIEW) { 6353 Log.v(LOGTAG, "moveSelection" 6354 + " mSelectX=" + mSelectX 6355 + " mSelectY=" + mSelectY 6356 + " mScrollX=" + mScrollX 6357 + " mScrollY=" + mScrollY 6358 + " xRate=" + xRate 6359 + " yRate=" + yRate 6360 ); 6361 } 6362 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6363 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6364 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6365 : 0; 6366 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6367 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6368 : 0; 6369 pinScrollBy(scrollX, scrollY, true, 0); 6370 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6371 requestRectangleOnScreen(select); 6372 invalidate(); 6373 } 6374 6375 private int scaleTrackballX(float xRate, int width) { 6376 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6377 int nextXMove = xMove; 6378 if (xMove > 0) { 6379 if (xMove > mTrackballXMove) { 6380 xMove -= mTrackballXMove; 6381 } 6382 } else if (xMove < mTrackballXMove) { 6383 xMove -= mTrackballXMove; 6384 } 6385 mTrackballXMove = nextXMove; 6386 return xMove; 6387 } 6388 6389 private int scaleTrackballY(float yRate, int height) { 6390 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6391 int nextYMove = yMove; 6392 if (yMove > 0) { 6393 if (yMove > mTrackballYMove) { 6394 yMove -= mTrackballYMove; 6395 } 6396 } else if (yMove < mTrackballYMove) { 6397 yMove -= mTrackballYMove; 6398 } 6399 mTrackballYMove = nextYMove; 6400 return yMove; 6401 } 6402 6403 private int keyCodeToSoundsEffect(int keyCode) { 6404 switch(keyCode) { 6405 case KeyEvent.KEYCODE_DPAD_UP: 6406 return SoundEffectConstants.NAVIGATION_UP; 6407 case KeyEvent.KEYCODE_DPAD_RIGHT: 6408 return SoundEffectConstants.NAVIGATION_RIGHT; 6409 case KeyEvent.KEYCODE_DPAD_DOWN: 6410 return SoundEffectConstants.NAVIGATION_DOWN; 6411 case KeyEvent.KEYCODE_DPAD_LEFT: 6412 return SoundEffectConstants.NAVIGATION_LEFT; 6413 } 6414 throw new IllegalArgumentException("keyCode must be one of " + 6415 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6416 "KEYCODE_DPAD_LEFT}."); 6417 } 6418 6419 private void doTrackball(long time, int metaState) { 6420 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6421 if (elapsed == 0) { 6422 elapsed = TRACKBALL_TIMEOUT; 6423 } 6424 float xRate = mTrackballRemainsX * 1000 / elapsed; 6425 float yRate = mTrackballRemainsY * 1000 / elapsed; 6426 int viewWidth = getViewWidth(); 6427 int viewHeight = getViewHeight(); 6428 if (mSelectingText) { 6429 if (!mDrawSelectionPointer) { 6430 // The last selection was made by touch, disabling drawing the 6431 // selection pointer. Allow the trackball to adjust the 6432 // position of the touch control. 6433 mSelectX = contentToViewX(nativeSelectionX()); 6434 mSelectY = contentToViewY(nativeSelectionY()); 6435 mDrawSelectionPointer = mExtendSelection = true; 6436 nativeSetExtendSelection(); 6437 } 6438 moveSelection(scaleTrackballX(xRate, viewWidth), 6439 scaleTrackballY(yRate, viewHeight)); 6440 mTrackballRemainsX = mTrackballRemainsY = 0; 6441 return; 6442 } 6443 float ax = Math.abs(xRate); 6444 float ay = Math.abs(yRate); 6445 float maxA = Math.max(ax, ay); 6446 if (DebugFlags.WEB_VIEW) { 6447 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6448 + " xRate=" + xRate 6449 + " yRate=" + yRate 6450 + " mTrackballRemainsX=" + mTrackballRemainsX 6451 + " mTrackballRemainsY=" + mTrackballRemainsY); 6452 } 6453 int width = mContentWidth - viewWidth; 6454 int height = mContentHeight - viewHeight; 6455 if (width < 0) width = 0; 6456 if (height < 0) height = 0; 6457 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6458 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6459 maxA = Math.max(ax, ay); 6460 int count = Math.max(0, (int) maxA); 6461 int oldScrollX = mScrollX; 6462 int oldScrollY = mScrollY; 6463 if (count > 0) { 6464 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6465 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6466 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6467 KeyEvent.KEYCODE_DPAD_RIGHT; 6468 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6469 if (DebugFlags.WEB_VIEW) { 6470 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6471 + " count=" + count 6472 + " mTrackballRemainsX=" + mTrackballRemainsX 6473 + " mTrackballRemainsY=" + mTrackballRemainsY); 6474 } 6475 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6476 for (int i = 0; i < count; i++) { 6477 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6478 } 6479 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6480 } else if (navHandledKey(selectKeyCode, count, false, time)) { 6481 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 6482 } 6483 mTrackballRemainsX = mTrackballRemainsY = 0; 6484 } 6485 if (count >= TRACKBALL_SCROLL_COUNT) { 6486 int xMove = scaleTrackballX(xRate, width); 6487 int yMove = scaleTrackballY(yRate, height); 6488 if (DebugFlags.WEB_VIEW) { 6489 Log.v(LOGTAG, "doTrackball pinScrollBy" 6490 + " count=" + count 6491 + " xMove=" + xMove + " yMove=" + yMove 6492 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 6493 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 6494 ); 6495 } 6496 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 6497 xMove = 0; 6498 } 6499 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 6500 yMove = 0; 6501 } 6502 if (xMove != 0 || yMove != 0) { 6503 pinScrollBy(xMove, yMove, true, 0); 6504 } 6505 } 6506 } 6507 6508 /** 6509 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 6510 * @return Maximum horizontal scroll position within real content 6511 */ 6512 int computeMaxScrollX() { 6513 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 6514 } 6515 6516 /** 6517 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 6518 * @return Maximum vertical scroll position within real content 6519 */ 6520 int computeMaxScrollY() { 6521 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 6522 - getViewHeightWithTitle(), 0); 6523 } 6524 6525 boolean updateScrollCoordinates(int x, int y) { 6526 int oldX = mScrollX; 6527 int oldY = mScrollY; 6528 mScrollX = x; 6529 mScrollY = y; 6530 if (oldX != mScrollX || oldY != mScrollY) { 6531 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 6532 return true; 6533 } else { 6534 return false; 6535 } 6536 } 6537 6538 public void flingScroll(int vx, int vy) { 6539 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 6540 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 6541 invalidate(); 6542 } 6543 6544 private void doFling() { 6545 if (mVelocityTracker == null) { 6546 return; 6547 } 6548 int maxX = computeMaxScrollX(); 6549 int maxY = computeMaxScrollY(); 6550 6551 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 6552 int vx = (int) mVelocityTracker.getXVelocity(); 6553 int vy = (int) mVelocityTracker.getYVelocity(); 6554 6555 int scrollX = mScrollX; 6556 int scrollY = mScrollY; 6557 int overscrollDistance = mOverscrollDistance; 6558 int overflingDistance = mOverflingDistance; 6559 6560 // Use the layer's scroll data if applicable. 6561 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 6562 scrollX = mScrollingLayerRect.left; 6563 scrollY = mScrollingLayerRect.top; 6564 maxX = mScrollingLayerRect.right; 6565 maxY = mScrollingLayerRect.bottom; 6566 // No overscrolling for layers. 6567 overscrollDistance = overflingDistance = 0; 6568 } 6569 6570 if (mSnapScrollMode != SNAP_NONE) { 6571 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6572 vy = 0; 6573 } else { 6574 vx = 0; 6575 } 6576 } 6577 if (true /* EMG release: make our fling more like Maps' */) { 6578 // maps cuts their velocity in half 6579 vx = vx * 3 / 4; 6580 vy = vy * 3 / 4; 6581 } 6582 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6583 WebViewCore.resumePriority(); 6584 if (!mSelectingText) { 6585 WebViewCore.resumeUpdatePicture(mWebViewCore); 6586 } 6587 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 6588 invalidate(); 6589 } 6590 return; 6591 } 6592 float currentVelocity = mScroller.getCurrVelocity(); 6593 float velocity = (float) Math.hypot(vx, vy); 6594 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6595 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6596 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6597 - Math.atan2(vy, vx))); 6598 final float circle = (float) (Math.PI) * 2.0f; 6599 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6600 vx += currentVelocity * mLastVelX / mLastVelocity; 6601 vy += currentVelocity * mLastVelY / mLastVelocity; 6602 velocity = (float) Math.hypot(vx, vy); 6603 if (DebugFlags.WEB_VIEW) { 6604 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6605 } 6606 } else if (DebugFlags.WEB_VIEW) { 6607 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6608 } 6609 } else if (DebugFlags.WEB_VIEW) { 6610 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6611 + " current=" + currentVelocity 6612 + " vx=" + vx + " vy=" + vy 6613 + " maxX=" + maxX + " maxY=" + maxY 6614 + " scrollX=" + scrollX + " scrollY=" + scrollY 6615 + " layer=" + mScrollingLayer); 6616 } 6617 6618 // Allow sloppy flings without overscrolling at the edges. 6619 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6620 vx = 0; 6621 } 6622 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6623 vy = 0; 6624 } 6625 6626 if (overscrollDistance < overflingDistance) { 6627 if ((vx > 0 && scrollX == -overscrollDistance) || 6628 (vx < 0 && scrollX == maxX + overscrollDistance)) { 6629 vx = 0; 6630 } 6631 if ((vy > 0 && scrollY == -overscrollDistance) || 6632 (vy < 0 && scrollY == maxY + overscrollDistance)) { 6633 vy = 0; 6634 } 6635 } 6636 6637 mLastVelX = vx; 6638 mLastVelY = vy; 6639 mLastVelocity = velocity; 6640 6641 // no horizontal overscroll if the content just fits 6642 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 6643 maxX == 0 ? 0 : overflingDistance, overflingDistance); 6644 // Duration is calculated based on velocity. With range boundaries and overscroll 6645 // we may not know how long the final animation will take. (Hence the deprecation 6646 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6647 // resumes during this effect we will take a performance hit. See computeScroll; 6648 // we resume webcore there when the animation is finished. 6649 final int time = mScroller.getDuration(); 6650 6651 // Suppress scrollbars for layer scrolling. 6652 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6653 awakenScrollBars(time); 6654 } 6655 6656 invalidate(); 6657 } 6658 6659 /** 6660 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6661 * in charge of installing this view to the view hierarchy. This view will 6662 * become visible when the user starts scrolling via touch and fade away if 6663 * the user does not interact with it. 6664 * <p/> 6665 * API version 3 introduces a built-in zoom mechanism that is shown 6666 * automatically by the MapView. This is the preferred approach for 6667 * showing the zoom UI. 6668 * 6669 * @deprecated The built-in zoom mechanism is preferred, see 6670 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6671 */ 6672 @Deprecated 6673 public View getZoomControls() { 6674 if (!getSettings().supportZoom()) { 6675 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6676 return null; 6677 } 6678 return mZoomManager.getExternalZoomPicker(); 6679 } 6680 6681 void dismissZoomControl() { 6682 mZoomManager.dismissZoomPicker(); 6683 } 6684 6685 float getDefaultZoomScale() { 6686 return mZoomManager.getDefaultScale(); 6687 } 6688 6689 /** 6690 * @return TRUE if the WebView can be zoomed in. 6691 */ 6692 public boolean canZoomIn() { 6693 return mZoomManager.canZoomIn(); 6694 } 6695 6696 /** 6697 * @return TRUE if the WebView can be zoomed out. 6698 */ 6699 public boolean canZoomOut() { 6700 return mZoomManager.canZoomOut(); 6701 } 6702 6703 /** 6704 * Perform zoom in in the webview 6705 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6706 */ 6707 public boolean zoomIn() { 6708 return mZoomManager.zoomIn(); 6709 } 6710 6711 /** 6712 * Perform zoom out in the webview 6713 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6714 */ 6715 public boolean zoomOut() { 6716 return mZoomManager.zoomOut(); 6717 } 6718 6719 private void updateSelection() { 6720 if (mNativeClass == 0) { 6721 return; 6722 } 6723 // mLastTouchX and mLastTouchY are the point in the current viewport 6724 int contentX = viewToContentX(mLastTouchX + mScrollX); 6725 int contentY = viewToContentY(mLastTouchY + mScrollY); 6726 int slop = viewToContentDimension(mNavSlop); 6727 Rect rect = new Rect(contentX - slop, contentY - slop, 6728 contentX + slop, contentY + slop); 6729 nativeSelectBestAt(rect); 6730 mInitialHitTestResult = hitTestResult(null); 6731 } 6732 6733 /** 6734 * Scroll the focused text field to match the WebTextView 6735 * @param xPercent New x position of the WebTextView from 0 to 1. 6736 */ 6737 /*package*/ void scrollFocusedTextInputX(float xPercent) { 6738 if (!inEditingMode() || mWebViewCore == null) { 6739 return; 6740 } 6741 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 6742 new Float(xPercent)); 6743 } 6744 6745 /** 6746 * Scroll the focused textarea vertically to match the WebTextView 6747 * @param y New y position of the WebTextView in view coordinates 6748 */ 6749 /* package */ void scrollFocusedTextInputY(int y) { 6750 if (!inEditingMode() || mWebViewCore == null) { 6751 return; 6752 } 6753 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 6754 } 6755 6756 /** 6757 * Set our starting point and time for a drag from the WebTextView. 6758 */ 6759 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6760 if (!inEditingMode()) { 6761 return; 6762 } 6763 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 6764 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 6765 mLastTouchTime = eventTime; 6766 if (!mScroller.isFinished()) { 6767 abortAnimation(); 6768 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6769 } 6770 mSnapScrollMode = SNAP_NONE; 6771 mVelocityTracker = VelocityTracker.obtain(); 6772 mTouchMode = TOUCH_DRAG_START_MODE; 6773 } 6774 6775 /** 6776 * Given a motion event from the WebTextView, set its location to our 6777 * coordinates, and handle the event. 6778 */ 6779 /*package*/ boolean textFieldDrag(MotionEvent event) { 6780 if (!inEditingMode()) { 6781 return false; 6782 } 6783 mDragFromTextInput = true; 6784 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6785 (float) (mWebTextView.getTop() - mScrollY)); 6786 boolean result = onTouchEvent(event); 6787 mDragFromTextInput = false; 6788 return result; 6789 } 6790 6791 /** 6792 * Due a touch up from a WebTextView. This will be handled by webkit to 6793 * change the selection. 6794 * @param event MotionEvent in the WebTextView's coordinates. 6795 */ 6796 /*package*/ void touchUpOnTextField(MotionEvent event) { 6797 if (!inEditingMode()) { 6798 return; 6799 } 6800 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6801 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6802 int slop = viewToContentDimension(mNavSlop); 6803 nativeMotionUp(x, y, slop); 6804 } 6805 6806 /** 6807 * Called when pressing the center key or trackball on a textfield. 6808 */ 6809 /*package*/ void centerKeyPressOnTextField() { 6810 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6811 nativeCursorNodePointer()); 6812 } 6813 6814 private void doShortPress() { 6815 if (mNativeClass == 0) { 6816 return; 6817 } 6818 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6819 return; 6820 } 6821 mTouchMode = TOUCH_DONE_MODE; 6822 switchOutDrawHistory(); 6823 // mLastTouchX and mLastTouchY are the point in the current viewport 6824 int contentX = viewToContentX(mLastTouchX + mScrollX); 6825 int contentY = viewToContentY(mLastTouchY + mScrollY); 6826 int slop = viewToContentDimension(mNavSlop); 6827 if (getSettings().supportTouchOnly()) { 6828 removeTouchHighlight(false); 6829 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6830 // use "0" as generation id to inform WebKit to use the same x/y as 6831 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 6832 touchUpData.mMoveGeneration = 0; 6833 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6834 } else if (nativePointInNavCache(contentX, contentY, slop)) { 6835 WebViewCore.MotionUpData motionUpData = new WebViewCore 6836 .MotionUpData(); 6837 motionUpData.mFrame = nativeCacheHitFramePointer(); 6838 motionUpData.mNode = nativeCacheHitNodePointer(); 6839 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6840 motionUpData.mX = contentX; 6841 motionUpData.mY = contentY; 6842 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6843 motionUpData); 6844 } else { 6845 doMotionUp(contentX, contentY); 6846 } 6847 } 6848 6849 private void doMotionUp(int contentX, int contentY) { 6850 int slop = viewToContentDimension(mNavSlop); 6851 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 6852 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6853 } 6854 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6855 playSoundEffect(SoundEffectConstants.CLICK); 6856 } 6857 } 6858 6859 /** 6860 * Returns plugin bounds if x/y in content coordinates corresponds to a 6861 * plugin. Otherwise a NULL rectangle is returned. 6862 */ 6863 Rect getPluginBounds(int x, int y) { 6864 int slop = viewToContentDimension(mNavSlop); 6865 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 6866 return nativeCacheHitNodeBounds(); 6867 } else { 6868 return null; 6869 } 6870 } 6871 6872 /* 6873 * Return true if the rect (e.g. plugin) is fully visible and maximized 6874 * inside the WebView. 6875 */ 6876 boolean isRectFitOnScreen(Rect rect) { 6877 final int rectWidth = rect.width(); 6878 final int rectHeight = rect.height(); 6879 final int viewWidth = getViewWidth(); 6880 final int viewHeight = getViewHeightWithTitle(); 6881 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 6882 scale = mZoomManager.computeScaleWithLimits(scale); 6883 return !mZoomManager.willScaleTriggerZoom(scale) 6884 && contentToViewX(rect.left) >= mScrollX 6885 && contentToViewX(rect.right) <= mScrollX + viewWidth 6886 && contentToViewY(rect.top) >= mScrollY 6887 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 6888 } 6889 6890 /* 6891 * Maximize and center the rectangle, specified in the document coordinate 6892 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6893 * animated scroll to center it. If the zoom needs to be changed, find the 6894 * zoom center and do a smooth zoom transition. The rect is in document 6895 * coordinates 6896 */ 6897 void centerFitRect(Rect rect) { 6898 final int rectWidth = rect.width(); 6899 final int rectHeight = rect.height(); 6900 final int viewWidth = getViewWidth(); 6901 final int viewHeight = getViewHeightWithTitle(); 6902 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 6903 / rectHeight); 6904 scale = mZoomManager.computeScaleWithLimits(scale); 6905 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6906 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 6907 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 6908 true, 0); 6909 } else { 6910 float actualScale = mZoomManager.getScale(); 6911 float oldScreenX = rect.left * actualScale - mScrollX; 6912 float rectViewX = rect.left * scale; 6913 float rectViewWidth = rectWidth * scale; 6914 float newMaxWidth = mContentWidth * scale; 6915 float newScreenX = (viewWidth - rectViewWidth) / 2; 6916 // pin the newX to the WebView 6917 if (newScreenX > rectViewX) { 6918 newScreenX = rectViewX; 6919 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6920 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6921 } 6922 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6923 / (scale - actualScale); 6924 float oldScreenY = rect.top * actualScale + getTitleHeight() 6925 - mScrollY; 6926 float rectViewY = rect.top * scale + getTitleHeight(); 6927 float rectViewHeight = rectHeight * scale; 6928 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6929 float newScreenY = (viewHeight - rectViewHeight) / 2; 6930 // pin the newY to the WebView 6931 if (newScreenY > rectViewY) { 6932 newScreenY = rectViewY; 6933 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6934 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6935 } 6936 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6937 / (scale - actualScale); 6938 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6939 mZoomManager.startZoomAnimation(scale, false); 6940 } 6941 } 6942 6943 // Called by JNI to handle a touch on a node representing an email address, 6944 // address, or phone number 6945 private void overrideLoading(String url) { 6946 mCallbackProxy.uiOverrideUrlLoading(url); 6947 } 6948 6949 @Override 6950 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6951 // FIXME: If a subwindow is showing find, and the user touches the 6952 // background window, it can steal focus. 6953 if (mFindIsUp) return false; 6954 boolean result = false; 6955 if (inEditingMode()) { 6956 result = mWebTextView.requestFocus(direction, 6957 previouslyFocusedRect); 6958 } else { 6959 result = super.requestFocus(direction, previouslyFocusedRect); 6960 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 6961 // For cases such as GMail, where we gain focus from a direction, 6962 // we want to move to the first available link. 6963 // FIXME: If there are no visible links, we may not want to 6964 int fakeKeyDirection = 0; 6965 switch(direction) { 6966 case View.FOCUS_UP: 6967 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6968 break; 6969 case View.FOCUS_DOWN: 6970 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6971 break; 6972 case View.FOCUS_LEFT: 6973 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6974 break; 6975 case View.FOCUS_RIGHT: 6976 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6977 break; 6978 default: 6979 return result; 6980 } 6981 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6982 navHandledKey(fakeKeyDirection, 1, true, 0); 6983 } 6984 } 6985 } 6986 return result; 6987 } 6988 6989 @Override 6990 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6991 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6992 6993 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6994 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6995 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6996 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6997 6998 int measuredHeight = heightSize; 6999 int measuredWidth = widthSize; 7000 7001 // Grab the content size from WebViewCore. 7002 int contentHeight = contentToViewDimension(mContentHeight); 7003 int contentWidth = contentToViewDimension(mContentWidth); 7004 7005// Log.d(LOGTAG, "------- measure " + heightMode); 7006 7007 if (heightMode != MeasureSpec.EXACTLY) { 7008 mHeightCanMeasure = true; 7009 measuredHeight = contentHeight; 7010 if (heightMode == MeasureSpec.AT_MOST) { 7011 // If we are larger than the AT_MOST height, then our height can 7012 // no longer be measured and we should scroll internally. 7013 if (measuredHeight > heightSize) { 7014 measuredHeight = heightSize; 7015 mHeightCanMeasure = false; 7016 } else if (measuredHeight < heightSize) { 7017 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7018 } 7019 } 7020 } else { 7021 mHeightCanMeasure = false; 7022 } 7023 if (mNativeClass != 0) { 7024 nativeSetHeightCanMeasure(mHeightCanMeasure); 7025 } 7026 // For the width, always use the given size unless unspecified. 7027 if (widthMode == MeasureSpec.UNSPECIFIED) { 7028 mWidthCanMeasure = true; 7029 measuredWidth = contentWidth; 7030 } else { 7031 if (measuredWidth < contentWidth) { 7032 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7033 } 7034 mWidthCanMeasure = false; 7035 } 7036 7037 synchronized (this) { 7038 setMeasuredDimension(measuredWidth, measuredHeight); 7039 } 7040 } 7041 7042 @Override 7043 public boolean requestChildRectangleOnScreen(View child, 7044 Rect rect, 7045 boolean immediate) { 7046 if (mNativeClass == 0) { 7047 return false; 7048 } 7049 // don't scroll while in zoom animation. When it is done, we will adjust 7050 // the necessary components (e.g., WebTextView if it is in editing mode) 7051 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7052 return false; 7053 } 7054 7055 rect.offset(child.getLeft() - child.getScrollX(), 7056 child.getTop() - child.getScrollY()); 7057 7058 Rect content = new Rect(viewToContentX(mScrollX), 7059 viewToContentY(mScrollY), 7060 viewToContentX(mScrollX + getWidth() 7061 - getVerticalScrollbarWidth()), 7062 viewToContentY(mScrollY + getViewHeightWithTitle())); 7063 content = nativeSubtractLayers(content); 7064 int screenTop = contentToViewY(content.top); 7065 int screenBottom = contentToViewY(content.bottom); 7066 int height = screenBottom - screenTop; 7067 int scrollYDelta = 0; 7068 7069 if (rect.bottom > screenBottom) { 7070 int oneThirdOfScreenHeight = height / 3; 7071 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7072 // If the rectangle is too tall to fit in the bottom two thirds 7073 // of the screen, place it at the top. 7074 scrollYDelta = rect.top - screenTop; 7075 } else { 7076 // If the rectangle will still fit on screen, we want its 7077 // top to be in the top third of the screen. 7078 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7079 } 7080 } else if (rect.top < screenTop) { 7081 scrollYDelta = rect.top - screenTop; 7082 } 7083 7084 int screenLeft = contentToViewX(content.left); 7085 int screenRight = contentToViewX(content.right); 7086 int width = screenRight - screenLeft; 7087 int scrollXDelta = 0; 7088 7089 if (rect.right > screenRight && rect.left > screenLeft) { 7090 if (rect.width() > width) { 7091 scrollXDelta += (rect.left - screenLeft); 7092 } else { 7093 scrollXDelta += (rect.right - screenRight); 7094 } 7095 } else if (rect.left < screenLeft) { 7096 scrollXDelta -= (screenLeft - rect.left); 7097 } 7098 7099 if ((scrollYDelta | scrollXDelta) != 0) { 7100 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7101 } 7102 7103 return false; 7104 } 7105 7106 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7107 String replace, int newStart, int newEnd) { 7108 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7109 arg.mReplace = replace; 7110 arg.mNewStart = newStart; 7111 arg.mNewEnd = newEnd; 7112 mTextGeneration++; 7113 arg.mTextGeneration = mTextGeneration; 7114 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7115 } 7116 7117 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7118 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7119 arg.mEvent = event; 7120 arg.mCurrentText = currentText; 7121 // Increase our text generation number, and pass it to webcore thread 7122 mTextGeneration++; 7123 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7124 // WebKit's document state is not saved until about to leave the page. 7125 // To make sure the host application, like Browser, has the up to date 7126 // document state when it goes to background, we force to save the 7127 // document state. 7128 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7129 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7130 cursorData(), 1000); 7131 } 7132 7133 /* package */ synchronized WebViewCore getWebViewCore() { 7134 return mWebViewCore; 7135 } 7136 7137 /** 7138 * Used only by TouchEventQueue to store pending touch events. 7139 */ 7140 private static class QueuedTouch { 7141 long mSequence; 7142 MotionEvent mEvent; // Optional 7143 TouchEventData mTed; // Optional 7144 7145 QueuedTouch mNext; 7146 7147 public QueuedTouch set(TouchEventData ted) { 7148 mSequence = ted.mSequence; 7149 mTed = ted; 7150 mEvent = null; 7151 mNext = null; 7152 return this; 7153 } 7154 7155 public QueuedTouch set(MotionEvent ev, long sequence) { 7156 mEvent = MotionEvent.obtain(ev); 7157 mSequence = sequence; 7158 mTed = null; 7159 mNext = null; 7160 return this; 7161 } 7162 7163 public QueuedTouch add(QueuedTouch other) { 7164 if (other.mSequence < mSequence) { 7165 other.mNext = this; 7166 return other; 7167 } 7168 7169 QueuedTouch insertAt = this; 7170 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 7171 insertAt = insertAt.mNext; 7172 } 7173 other.mNext = insertAt.mNext; 7174 insertAt.mNext = other; 7175 return this; 7176 } 7177 } 7178 7179 /** 7180 * WebView handles touch events asynchronously since some events must be passed to WebKit 7181 * for potentially slower processing. TouchEventQueue serializes touch events regardless 7182 * of which path they take to ensure that no events are ever processed out of order 7183 * by WebView. 7184 */ 7185 private class TouchEventQueue { 7186 private long mNextTouchSequence = Long.MIN_VALUE + 1; 7187 private long mLastHandledTouchSequence = Long.MIN_VALUE; 7188 private long mIgnoreUntilSequence = Long.MIN_VALUE; 7189 private QueuedTouch mTouchEventQueue; 7190 private QueuedTouch mQueuedTouchRecycleBin; 7191 private int mQueuedTouchRecycleCount; 7192 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 7193 7194 // milliseconds until we abandon hope of getting all of a previous gesture 7195 private static final int QUEUED_GESTURE_TIMEOUT = 2000; 7196 7197 private QueuedTouch obtainQueuedTouch() { 7198 if (mQueuedTouchRecycleBin != null) { 7199 QueuedTouch result = mQueuedTouchRecycleBin; 7200 mQueuedTouchRecycleBin = result.mNext; 7201 mQueuedTouchRecycleCount--; 7202 return result; 7203 } 7204 return new QueuedTouch(); 7205 } 7206 7207 /** 7208 * Allow events with any currently missing sequence numbers to be skipped in processing. 7209 */ 7210 public void ignoreCurrentlyMissingEvents() { 7211 mIgnoreUntilSequence = mNextTouchSequence; 7212 } 7213 7214 private void recycleQueuedTouch(QueuedTouch qd) { 7215 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 7216 qd.mNext = mQueuedTouchRecycleBin; 7217 mQueuedTouchRecycleBin = qd; 7218 mQueuedTouchRecycleCount++; 7219 } 7220 } 7221 7222 /** 7223 * Reset the touch event queue. This will dump any pending events 7224 * and reset the sequence numbering. 7225 */ 7226 public void reset() { 7227 mNextTouchSequence = Long.MIN_VALUE + 1; 7228 mLastHandledTouchSequence = Long.MIN_VALUE; 7229 mIgnoreUntilSequence = Long.MIN_VALUE; 7230 while (mTouchEventQueue != null) { 7231 QueuedTouch recycleMe = mTouchEventQueue; 7232 mTouchEventQueue = mTouchEventQueue.mNext; 7233 recycleQueuedTouch(recycleMe); 7234 } 7235 } 7236 7237 /** 7238 * Return the next valid sequence number for tagging incoming touch events. 7239 * @return The next touch event sequence number 7240 */ 7241 public long nextTouchSequence() { 7242 return mNextTouchSequence++; 7243 } 7244 7245 /** 7246 * Enqueue a touch event in the form of TouchEventData. 7247 * The sequence number will be read from the mSequence field of the argument. 7248 * 7249 * If the touch event's sequence number is the next in line to be processed, it will 7250 * be handled before this method returns. Any subsequent events that have already 7251 * been queued will also be processed in their proper order. 7252 * 7253 * @param ted Touch data to be processed in order. 7254 */ 7255 public void enqueueTouchEvent(TouchEventData ted) { 7256 if (ted.mSequence < mLastHandledTouchSequence) { 7257 // Stale event and we already moved on; drop it. (Should not be common.) 7258 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 7259 " received from webcore; ignoring"); 7260 return; 7261 } 7262 7263 dropStaleGestures(ted.mMotionEvent, ted.mSequence); 7264 7265 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 7266 handleQueuedTouchEventData(ted); 7267 7268 mLastHandledTouchSequence++; 7269 7270 // Do we have any more? Run them if so. 7271 QueuedTouch qd = mTouchEventQueue; 7272 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7273 handleQueuedTouch(qd); 7274 QueuedTouch recycleMe = qd; 7275 qd = qd.mNext; 7276 recycleQueuedTouch(recycleMe); 7277 mLastHandledTouchSequence++; 7278 } 7279 mTouchEventQueue = qd; 7280 } else { 7281 QueuedTouch qd = obtainQueuedTouch().set(ted); 7282 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7283 } 7284 } 7285 7286 /** 7287 * Enqueue a touch event in the form of a MotionEvent from the framework. 7288 * 7289 * If the touch event's sequence number is the next in line to be processed, it will 7290 * be handled before this method returns. Any subsequent events that have already 7291 * been queued will also be processed in their proper order. 7292 * 7293 * @param ev MotionEvent to be processed in order 7294 */ 7295 public void enqueueTouchEvent(MotionEvent ev) { 7296 final long sequence = nextTouchSequence(); 7297 7298 dropStaleGestures(ev, sequence); 7299 7300 if (mLastHandledTouchSequence + 1 == sequence) { 7301 handleQueuedMotionEvent(ev); 7302 7303 mLastHandledTouchSequence++; 7304 7305 // Do we have any more? Run them if so. 7306 QueuedTouch qd = mTouchEventQueue; 7307 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7308 handleQueuedTouch(qd); 7309 QueuedTouch recycleMe = qd; 7310 qd = qd.mNext; 7311 recycleQueuedTouch(recycleMe); 7312 mLastHandledTouchSequence++; 7313 } 7314 mTouchEventQueue = qd; 7315 } else { 7316 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 7317 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7318 } 7319 } 7320 7321 private void dropStaleGestures(MotionEvent ev, long sequence) { 7322 if (mTouchEventQueue == null) return; 7323 7324 MotionEvent nextQueueEvent = mTouchEventQueue.mTed != null ? 7325 mTouchEventQueue.mTed.mMotionEvent : mTouchEventQueue.mEvent; 7326 7327 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN && nextQueueEvent != null) { 7328 long eventTime = ev.getEventTime(); 7329 long nextQueueTime = nextQueueEvent.getEventTime(); 7330 if (eventTime > nextQueueTime + QUEUED_GESTURE_TIMEOUT) { 7331 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 7332 "Ignoring previous queued events."); 7333 QueuedTouch qd = mTouchEventQueue; 7334 while (qd != null && qd.mSequence < sequence) { 7335 QueuedTouch recycleMe = qd; 7336 qd = qd.mNext; 7337 recycleQueuedTouch(recycleMe); 7338 } 7339 mTouchEventQueue = qd; 7340 mLastHandledTouchSequence = sequence - 1; 7341 } 7342 } 7343 7344 if (mIgnoreUntilSequence > mLastHandledTouchSequence) { 7345 QueuedTouch qd = mTouchEventQueue; 7346 while (qd != null && qd.mSequence < mIgnoreUntilSequence && 7347 qd.mSequence < sequence) { 7348 mLastHandledTouchSequence = qd.mSequence; 7349 QueuedTouch recycleMe = qd; 7350 qd = qd.mNext; 7351 recycleQueuedTouch(recycleMe); 7352 } 7353 mTouchEventQueue = qd; 7354 } 7355 } 7356 7357 private void handleQueuedTouch(QueuedTouch qt) { 7358 if (qt.mTed != null) { 7359 handleQueuedTouchEventData(qt.mTed); 7360 } else { 7361 handleQueuedMotionEvent(qt.mEvent); 7362 qt.mEvent.recycle(); 7363 } 7364 } 7365 7366 private void handleQueuedMotionEvent(MotionEvent ev) { 7367 int action = ev.getActionMasked(); 7368 if (ev.getPointerCount() > 1) { // Multi-touch 7369 handleMultiTouchInWebView(ev); 7370 } else { 7371 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 7372 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 7373 // ScaleGestureDetector needs a consistent event stream to operate properly. 7374 // It won't take any action with fewer than two pointers, but it needs to 7375 // update internal bookkeeping state. 7376 detector.onTouchEvent(ev); 7377 } 7378 7379 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 7380 } 7381 } 7382 7383 private void handleQueuedTouchEventData(TouchEventData ted) { 7384 if (!ted.mReprocess) { 7385 if (ted.mAction == MotionEvent.ACTION_DOWN 7386 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7387 // if prevent default is called from WebCore, UI 7388 // will not handle the rest of the touch events any 7389 // more. 7390 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 7391 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7392 } else if (ted.mAction == MotionEvent.ACTION_MOVE 7393 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7394 // the return for the first ACTION_MOVE will decide 7395 // whether UI will handle touch or not. Currently no 7396 // support for alternating prevent default 7397 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 7398 : PREVENT_DEFAULT_NO; 7399 } 7400 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7401 mTouchHighlightRegion.setEmpty(); 7402 } 7403 } else { 7404 if (ted.mPoints.length > 1) { // multi-touch 7405 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 7406 mPreventDefault = PREVENT_DEFAULT_NO; 7407 handleMultiTouchInWebView(ted.mMotionEvent); 7408 } else { 7409 mPreventDefault = PREVENT_DEFAULT_YES; 7410 } 7411 return; 7412 } 7413 7414 // prevent default is not called in WebCore, so the 7415 // message needs to be reprocessed in UI 7416 if (!ted.mNativeResult) { 7417 // Following is for single touch. 7418 switch (ted.mAction) { 7419 case MotionEvent.ACTION_DOWN: 7420 mLastDeferTouchX = contentToViewX(ted.mPoints[0].x) 7421 - mScrollX; 7422 mLastDeferTouchY = contentToViewY(ted.mPoints[0].y) 7423 - mScrollY; 7424 mDeferTouchMode = TOUCH_INIT_MODE; 7425 break; 7426 case MotionEvent.ACTION_MOVE: { 7427 // no snapping in defer process 7428 int x = contentToViewX(ted.mPoints[0].x) - mScrollX; 7429 int y = contentToViewY(ted.mPoints[0].y) - mScrollY; 7430 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7431 mDeferTouchMode = TOUCH_DRAG_MODE; 7432 mLastDeferTouchX = x; 7433 mLastDeferTouchY = y; 7434 startScrollingLayer(x, y); 7435 startDrag(); 7436 } 7437 int deltaX = pinLocX((int) (mScrollX 7438 + mLastDeferTouchX - x)) 7439 - mScrollX; 7440 int deltaY = pinLocY((int) (mScrollY 7441 + mLastDeferTouchY - y)) 7442 - mScrollY; 7443 doDrag(deltaX, deltaY); 7444 if (deltaX != 0) mLastDeferTouchX = x; 7445 if (deltaY != 0) mLastDeferTouchY = y; 7446 break; 7447 } 7448 case MotionEvent.ACTION_UP: 7449 case MotionEvent.ACTION_CANCEL: 7450 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7451 // no fling in defer process 7452 mScroller.springBack(mScrollX, mScrollY, 0, 7453 computeMaxScrollX(), 0, 7454 computeMaxScrollY()); 7455 invalidate(); 7456 WebViewCore.resumePriority(); 7457 WebViewCore.resumeUpdatePicture(mWebViewCore); 7458 } 7459 mDeferTouchMode = TOUCH_DONE_MODE; 7460 break; 7461 case WebViewCore.ACTION_DOUBLETAP: 7462 // doDoubleTap() needs mLastTouchX/Y as anchor 7463 mLastTouchX = contentToViewX(ted.mPoints[0].x) - mScrollX; 7464 mLastTouchY = contentToViewY(ted.mPoints[0].y) - mScrollY; 7465 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 7466 mDeferTouchMode = TOUCH_DONE_MODE; 7467 break; 7468 case WebViewCore.ACTION_LONGPRESS: 7469 HitTestResult hitTest = getHitTestResult(); 7470 if (hitTest != null && hitTest.mType 7471 != HitTestResult.UNKNOWN_TYPE) { 7472 performLongClick(); 7473 } 7474 mDeferTouchMode = TOUCH_DONE_MODE; 7475 break; 7476 } 7477 } 7478 } 7479 } 7480 } 7481 7482 //------------------------------------------------------------------------- 7483 // Methods can be called from a separate thread, like WebViewCore 7484 // If it needs to call the View system, it has to send message. 7485 //------------------------------------------------------------------------- 7486 7487 /** 7488 * General handler to receive message coming from webkit thread 7489 */ 7490 class PrivateHandler extends Handler { 7491 @Override 7492 public void handleMessage(Message msg) { 7493 // exclude INVAL_RECT_MSG_ID since it is frequently output 7494 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 7495 if (msg.what >= FIRST_PRIVATE_MSG_ID 7496 && msg.what <= LAST_PRIVATE_MSG_ID) { 7497 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 7498 - FIRST_PRIVATE_MSG_ID]); 7499 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 7500 && msg.what <= LAST_PACKAGE_MSG_ID) { 7501 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 7502 - FIRST_PACKAGE_MSG_ID]); 7503 } else { 7504 Log.v(LOGTAG, Integer.toString(msg.what)); 7505 } 7506 } 7507 if (mWebViewCore == null) { 7508 // after WebView's destroy() is called, skip handling messages. 7509 return; 7510 } 7511 switch (msg.what) { 7512 case REMEMBER_PASSWORD: { 7513 mDatabase.setUsernamePassword( 7514 msg.getData().getString("host"), 7515 msg.getData().getString("username"), 7516 msg.getData().getString("password")); 7517 ((Message) msg.obj).sendToTarget(); 7518 break; 7519 } 7520 case NEVER_REMEMBER_PASSWORD: { 7521 mDatabase.setUsernamePassword( 7522 msg.getData().getString("host"), null, null); 7523 ((Message) msg.obj).sendToTarget(); 7524 break; 7525 } 7526 case PREVENT_DEFAULT_TIMEOUT: { 7527 // if timeout happens, cancel it so that it won't block UI 7528 // to continue handling touch events 7529 if ((msg.arg1 == MotionEvent.ACTION_DOWN 7530 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 7531 || (msg.arg1 == MotionEvent.ACTION_MOVE 7532 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 7533 cancelWebCoreTouchEvent( 7534 viewToContentX(mLastTouchX + mScrollX), 7535 viewToContentY(mLastTouchY + mScrollY), 7536 true); 7537 } 7538 break; 7539 } 7540 case SCROLL_SELECT_TEXT: { 7541 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 7542 mSentAutoScrollMessage = false; 7543 break; 7544 } 7545 if (mScrollingLayer == 0) { 7546 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 7547 } else { 7548 mScrollingLayerRect.left += mAutoScrollX; 7549 mScrollingLayerRect.top += mAutoScrollY; 7550 nativeScrollLayer(mScrollingLayer, 7551 mScrollingLayerRect.left, 7552 mScrollingLayerRect.top); 7553 invalidate(); 7554 } 7555 sendEmptyMessageDelayed( 7556 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 7557 break; 7558 } 7559 case SWITCH_TO_SHORTPRESS: { 7560 mInitialHitTestResult = null; // set by updateSelection() 7561 if (mTouchMode == TOUCH_INIT_MODE) { 7562 if (!getSettings().supportTouchOnly() 7563 && mPreventDefault != PREVENT_DEFAULT_YES) { 7564 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 7565 updateSelection(); 7566 } else { 7567 // set to TOUCH_SHORTPRESS_MODE so that it won't 7568 // trigger double tap any more 7569 mTouchMode = TOUCH_SHORTPRESS_MODE; 7570 } 7571 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 7572 mTouchMode = TOUCH_DONE_MODE; 7573 } 7574 break; 7575 } 7576 case SWITCH_TO_LONGPRESS: { 7577 if (getSettings().supportTouchOnly()) { 7578 removeTouchHighlight(false); 7579 } 7580 if (inFullScreenMode() || mDeferTouchProcess) { 7581 TouchEventData ted = new TouchEventData(); 7582 ted.mAction = WebViewCore.ACTION_LONGPRESS; 7583 ted.mIds = new int[1]; 7584 ted.mIds[0] = 0; 7585 ted.mPoints = new Point[1]; 7586 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 7587 viewToContentY(mLastTouchY + mScrollY)); 7588 // metaState for long press is tricky. Should it be the 7589 // state when the press started or when the press was 7590 // released? Or some intermediary key state? For 7591 // simplicity for now, we don't set it. 7592 ted.mMetaState = 0; 7593 ted.mReprocess = mDeferTouchProcess; 7594 ted.mNativeLayer = nativeScrollableLayer( 7595 ted.mPoints[0].x, ted.mPoints[0].y, 7596 ted.mNativeLayerRect, null); 7597 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 7598 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 7599 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 7600 mTouchMode = TOUCH_DONE_MODE; 7601 performLongClick(); 7602 } 7603 break; 7604 } 7605 case RELEASE_SINGLE_TAP: { 7606 doShortPress(); 7607 break; 7608 } 7609 case SCROLL_TO_MSG_ID: { 7610 // arg1 = animate, arg2 = onlyIfImeIsShowing 7611 // obj = Point(x, y) 7612 if (msg.arg2 == 1) { 7613 // This scroll is intended to bring the textfield into 7614 // view, but is only necessary if the IME is showing 7615 InputMethodManager imm = InputMethodManager.peekInstance(); 7616 if (imm == null || !imm.isAcceptingText() 7617 || (!imm.isActive(WebView.this) && (!inEditingMode() 7618 || !imm.isActive(mWebTextView)))) { 7619 break; 7620 } 7621 } 7622 final Point p = (Point) msg.obj; 7623 if (msg.arg1 == 1) { 7624 spawnContentScrollTo(p.x, p.y); 7625 } else { 7626 setContentScrollTo(p.x, p.y); 7627 } 7628 break; 7629 } 7630 case UPDATE_ZOOM_RANGE: { 7631 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 7632 // mScrollX contains the new minPrefWidth 7633 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 7634 break; 7635 } 7636 case REPLACE_BASE_CONTENT: { 7637 nativeReplaceBaseContent(msg.arg1); 7638 break; 7639 } 7640 case NEW_PICTURE_MSG_ID: { 7641 // called for new content 7642 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 7643 WebViewCore.ViewState viewState = draw.mViewState; 7644 boolean isPictureAfterFirstLayout = viewState != null; 7645 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 7646 getSettings().getShowVisualIndicator(), 7647 isPictureAfterFirstLayout); 7648 final Point viewSize = draw.mViewSize; 7649 if (isPictureAfterFirstLayout) { 7650 // Reset the last sent data here since dealing with new page. 7651 mLastWidthSent = 0; 7652 mZoomManager.onFirstLayout(draw); 7653 if (!mDrawHistory) { 7654 // Do not send the scroll event for this particular 7655 // scroll message. Note that a scroll event may 7656 // still be fired if the user scrolls before the 7657 // message can be handled. 7658 mSendScrollEvent = false; 7659 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 7660 mSendScrollEvent = true; 7661 7662 // As we are on a new page, remove the WebTextView. This 7663 // is necessary for page loads driven by webkit, and in 7664 // particular when the user was on a password field, so 7665 // the WebTextView was visible. 7666 clearTextEntry(); 7667 } 7668 } 7669 7670 // We update the layout (i.e. request a layout from the 7671 // view system) if the last view size that we sent to 7672 // WebCore matches the view size of the picture we just 7673 // received in the fixed dimension. 7674 final boolean updateLayout = viewSize.x == mLastWidthSent 7675 && viewSize.y == mLastHeightSent; 7676 // Don't send scroll event for picture coming from webkit, 7677 // since the new picture may cause a scroll event to override 7678 // the saved history scroll position. 7679 mSendScrollEvent = false; 7680 recordNewContentSize(draw.mContentSize.x, 7681 draw.mContentSize.y, updateLayout); 7682 mSendScrollEvent = true; 7683 if (DebugFlags.WEB_VIEW) { 7684 Rect b = draw.mInvalRegion.getBounds(); 7685 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 7686 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 7687 } 7688 invalidateContentRect(draw.mInvalRegion.getBounds()); 7689 7690 if (mPictureListener != null) { 7691 mPictureListener.onNewPicture(WebView.this, capturePicture()); 7692 } 7693 7694 // update the zoom information based on the new picture 7695 mZoomManager.onNewPicture(draw); 7696 7697 if (draw.mFocusSizeChanged && inEditingMode()) { 7698 mFocusSizeChanged = true; 7699 } 7700 if (isPictureAfterFirstLayout) { 7701 mViewManager.postReadyToDrawAll(); 7702 } 7703 break; 7704 } 7705 case WEBCORE_INITIALIZED_MSG_ID: 7706 // nativeCreate sets mNativeClass to a non-zero value 7707 nativeCreate(msg.arg1); 7708 break; 7709 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 7710 // Make sure that the textfield is currently focused 7711 // and representing the same node as the pointer. 7712 if (inEditingMode() && 7713 mWebTextView.isSameTextField(msg.arg1)) { 7714 if (msg.getData().getBoolean("password")) { 7715 Spannable text = (Spannable) mWebTextView.getText(); 7716 int start = Selection.getSelectionStart(text); 7717 int end = Selection.getSelectionEnd(text); 7718 mWebTextView.setInPassword(true); 7719 // Restore the selection, which may have been 7720 // ruined by setInPassword. 7721 Spannable pword = 7722 (Spannable) mWebTextView.getText(); 7723 Selection.setSelection(pword, start, end); 7724 // If the text entry has created more events, ignore 7725 // this one. 7726 } else if (msg.arg2 == mTextGeneration) { 7727 String text = (String) msg.obj; 7728 if (null == text) { 7729 text = ""; 7730 } 7731 mWebTextView.setTextAndKeepSelection(text); 7732 } 7733 } 7734 break; 7735 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 7736 displaySoftKeyboard(true); 7737 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 7738 case UPDATE_TEXT_SELECTION_MSG_ID: 7739 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 7740 (WebViewCore.TextSelectionData) msg.obj); 7741 break; 7742 case FORM_DID_BLUR: 7743 if (inEditingMode() 7744 && mWebTextView.isSameTextField(msg.arg1)) { 7745 hideSoftKeyboard(); 7746 } 7747 break; 7748 case RETURN_LABEL: 7749 if (inEditingMode() 7750 && mWebTextView.isSameTextField(msg.arg1)) { 7751 mWebTextView.setHint((String) msg.obj); 7752 InputMethodManager imm 7753 = InputMethodManager.peekInstance(); 7754 // The hint is propagated to the IME in 7755 // onCreateInputConnection. If the IME is already 7756 // active, restart it so that its hint text is updated. 7757 if (imm != null && imm.isActive(mWebTextView)) { 7758 imm.restartInput(mWebTextView); 7759 } 7760 } 7761 break; 7762 case UNHANDLED_NAV_KEY: 7763 navHandledKey(msg.arg1, 1, false, 0); 7764 break; 7765 case UPDATE_TEXT_ENTRY_MSG_ID: 7766 // this is sent after finishing resize in WebViewCore. Make 7767 // sure the text edit box is still on the screen. 7768 if (inEditingMode() && nativeCursorIsTextInput()) { 7769 rebuildWebTextView(); 7770 } 7771 break; 7772 case CLEAR_TEXT_ENTRY: 7773 clearTextEntry(); 7774 break; 7775 case INVAL_RECT_MSG_ID: { 7776 Rect r = (Rect)msg.obj; 7777 if (r == null) { 7778 invalidate(); 7779 } else { 7780 // we need to scale r from content into view coords, 7781 // which viewInvalidate() does for us 7782 viewInvalidate(r.left, r.top, r.right, r.bottom); 7783 } 7784 break; 7785 } 7786 case REQUEST_FORM_DATA: 7787 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 7788 if (mWebTextView.isSameTextField(msg.arg1)) { 7789 mWebTextView.setAdapterCustom(adapter); 7790 } 7791 break; 7792 case RESUME_WEBCORE_PRIORITY: 7793 WebViewCore.resumePriority(); 7794 WebViewCore.resumeUpdatePicture(mWebViewCore); 7795 break; 7796 7797 case LONG_PRESS_CENTER: 7798 // as this is shared by keydown and trackballdown, reset all 7799 // the states 7800 mGotCenterDown = false; 7801 mTrackballDown = false; 7802 performLongClick(); 7803 break; 7804 7805 case WEBCORE_NEED_TOUCH_EVENTS: 7806 mForwardTouchEvents = (msg.arg1 != 0); 7807 break; 7808 7809 case PREVENT_TOUCH_ID: 7810 if (inFullScreenMode()) { 7811 break; 7812 } 7813 TouchEventData ted = (TouchEventData) msg.obj; 7814 7815 // WebCore is responding to us; remove pending timeout. 7816 // It will be re-posted when needed. 7817 removeMessages(PREVENT_DEFAULT_TIMEOUT); 7818 7819 mTouchEventQueue.enqueueTouchEvent(ted); 7820 break; 7821 7822 case REQUEST_KEYBOARD: 7823 if (msg.arg1 == 0) { 7824 hideSoftKeyboard(); 7825 } else { 7826 displaySoftKeyboard(false); 7827 } 7828 break; 7829 7830 case FIND_AGAIN: 7831 // Ignore if find has been dismissed. 7832 if (mFindIsUp && mFindCallback != null) { 7833 mFindCallback.findAll(); 7834 } 7835 break; 7836 7837 case DRAG_HELD_MOTIONLESS: 7838 mHeldMotionless = MOTIONLESS_TRUE; 7839 invalidate(); 7840 // fall through to keep scrollbars awake 7841 7842 case AWAKEN_SCROLL_BARS: 7843 if (mTouchMode == TOUCH_DRAG_MODE 7844 && mHeldMotionless == MOTIONLESS_TRUE) { 7845 awakenScrollBars(ViewConfiguration 7846 .getScrollDefaultDelay(), false); 7847 mPrivateHandler.sendMessageDelayed(mPrivateHandler 7848 .obtainMessage(AWAKEN_SCROLL_BARS), 7849 ViewConfiguration.getScrollDefaultDelay()); 7850 } 7851 break; 7852 7853 case DO_MOTION_UP: 7854 doMotionUp(msg.arg1, msg.arg2); 7855 break; 7856 7857 case SCREEN_ON: 7858 setKeepScreenOn(msg.arg1 == 1); 7859 break; 7860 7861 case ENTER_FULLSCREEN_VIDEO: 7862 int layerId = msg.arg1; 7863 Log.v(LOGTAG, "Display the video layer " + layerId + " fullscreen"); 7864 break; 7865 7866 case SHOW_FULLSCREEN: { 7867 View view = (View) msg.obj; 7868 int npp = msg.arg1; 7869 7870 if (inFullScreenMode()) { 7871 Log.w(LOGTAG, "Should not have another full screen."); 7872 dismissFullScreenMode(); 7873 } 7874 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 7875 mFullScreenHolder.setContentView(view); 7876 mFullScreenHolder.setCancelable(false); 7877 mFullScreenHolder.setCanceledOnTouchOutside(false); 7878 mFullScreenHolder.show(); 7879 7880 break; 7881 } 7882 case HIDE_FULLSCREEN: 7883 dismissFullScreenMode(); 7884 break; 7885 7886 case DOM_FOCUS_CHANGED: 7887 if (inEditingMode()) { 7888 nativeClearCursor(); 7889 rebuildWebTextView(); 7890 } 7891 break; 7892 7893 case SHOW_RECT_MSG_ID: { 7894 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 7895 int x = mScrollX; 7896 int left = contentToViewX(data.mLeft); 7897 int width = contentToViewDimension(data.mWidth); 7898 int maxWidth = contentToViewDimension(data.mContentWidth); 7899 int viewWidth = getViewWidth(); 7900 if (width < viewWidth) { 7901 // center align 7902 x += left + width / 2 - mScrollX - viewWidth / 2; 7903 } else { 7904 x += (int) (left + data.mXPercentInDoc * width 7905 - mScrollX - data.mXPercentInView * viewWidth); 7906 } 7907 if (DebugFlags.WEB_VIEW) { 7908 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 7909 width + ",maxWidth=" + maxWidth + 7910 ",viewWidth=" + viewWidth + ",x=" 7911 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 7912 ",xPercentInView=" + data.mXPercentInView+ ")"); 7913 } 7914 // use the passing content width to cap x as the current 7915 // mContentWidth may not be updated yet 7916 x = Math.max(0, 7917 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 7918 int top = contentToViewY(data.mTop); 7919 int height = contentToViewDimension(data.mHeight); 7920 int maxHeight = contentToViewDimension(data.mContentHeight); 7921 int viewHeight = getViewHeight(); 7922 int y = (int) (top + data.mYPercentInDoc * height - 7923 data.mYPercentInView * viewHeight); 7924 if (DebugFlags.WEB_VIEW) { 7925 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 7926 height + ",maxHeight=" + maxHeight + 7927 ",viewHeight=" + viewHeight + ",y=" 7928 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 7929 ",yPercentInView=" + data.mYPercentInView+ ")"); 7930 } 7931 // use the passing content height to cap y as the current 7932 // mContentHeight may not be updated yet 7933 y = Math.max(0, 7934 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 7935 // We need to take into account the visible title height 7936 // when scrolling since y is an absolute view position. 7937 y = Math.max(0, y - getVisibleTitleHeight()); 7938 scrollTo(x, y); 7939 } 7940 break; 7941 7942 case CENTER_FIT_RECT: 7943 centerFitRect((Rect)msg.obj); 7944 break; 7945 7946 case SET_SCROLLBAR_MODES: 7947 mHorizontalScrollBarMode = msg.arg1; 7948 mVerticalScrollBarMode = msg.arg2; 7949 break; 7950 7951 case SELECTION_STRING_CHANGED: 7952 if (mAccessibilityInjector != null) { 7953 String selectionString = (String) msg.obj; 7954 mAccessibilityInjector.onSelectionStringChange(selectionString); 7955 } 7956 break; 7957 7958 case SET_TOUCH_HIGHLIGHT_RECTS: 7959 invalidate(mTouchHighlightRegion.getBounds()); 7960 mTouchHighlightRegion.setEmpty(); 7961 if (msg.obj != null) { 7962 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 7963 for (Rect rect : rects) { 7964 Rect viewRect = contentToViewRect(rect); 7965 // some sites, like stories in nytimes.com, set 7966 // mouse event handler in the top div. It is not 7967 // user friendly to highlight the div if it covers 7968 // more than half of the screen. 7969 if (viewRect.width() < getWidth() >> 1 7970 || viewRect.height() < getHeight() >> 1) { 7971 mTouchHighlightRegion.union(viewRect); 7972 invalidate(viewRect); 7973 } else { 7974 Log.w(LOGTAG, "Skip the huge selection rect:" 7975 + viewRect); 7976 } 7977 } 7978 } 7979 break; 7980 7981 case SAVE_WEBARCHIVE_FINISHED: 7982 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 7983 if (saveMessage.mCallback != null) { 7984 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 7985 } 7986 break; 7987 7988 case SET_AUTOFILLABLE: 7989 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 7990 if (mWebTextView != null) { 7991 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 7992 rebuildWebTextView(); 7993 } 7994 break; 7995 7996 case AUTOFILL_COMPLETE: 7997 if (mWebTextView != null) { 7998 // Clear the WebTextView adapter when AutoFill finishes 7999 // so that the drop down gets cleared. 8000 mWebTextView.setAdapterCustom(null); 8001 } 8002 break; 8003 8004 case SELECT_AT: 8005 nativeSelectAt(msg.arg1, msg.arg2); 8006 break; 8007 8008 default: 8009 super.handleMessage(msg); 8010 break; 8011 } 8012 } 8013 } 8014 8015 /** 8016 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 8017 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 8018 */ 8019 private void updateTextSelectionFromMessage(int nodePointer, 8020 int textGeneration, WebViewCore.TextSelectionData data) { 8021 if (inEditingMode() 8022 && mWebTextView.isSameTextField(nodePointer) 8023 && textGeneration == mTextGeneration) { 8024 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 8025 } 8026 } 8027 8028 // Class used to use a dropdown for a <select> element 8029 private class InvokeListBox implements Runnable { 8030 // Whether the listbox allows multiple selection. 8031 private boolean mMultiple; 8032 // Passed in to a list with multiple selection to tell 8033 // which items are selected. 8034 private int[] mSelectedArray; 8035 // Passed in to a list with single selection to tell 8036 // where the initial selection is. 8037 private int mSelection; 8038 8039 private Container[] mContainers; 8040 8041 // Need these to provide stable ids to my ArrayAdapter, 8042 // which normally does not have stable ids. (Bug 1250098) 8043 private class Container extends Object { 8044 /** 8045 * Possible values for mEnabled. Keep in sync with OptionStatus in 8046 * WebViewCore.cpp 8047 */ 8048 final static int OPTGROUP = -1; 8049 final static int OPTION_DISABLED = 0; 8050 final static int OPTION_ENABLED = 1; 8051 8052 String mString; 8053 int mEnabled; 8054 int mId; 8055 8056 @Override 8057 public String toString() { 8058 return mString; 8059 } 8060 } 8061 8062 /** 8063 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 8064 * and allow filtering. 8065 */ 8066 private class MyArrayListAdapter extends ArrayAdapter<Container> { 8067 public MyArrayListAdapter() { 8068 super(mContext, 8069 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 8070 com.android.internal.R.layout.webview_select_singlechoice, 8071 mContainers); 8072 } 8073 8074 @Override 8075 public View getView(int position, View convertView, 8076 ViewGroup parent) { 8077 // Always pass in null so that we will get a new CheckedTextView 8078 // Otherwise, an item which was previously used as an <optgroup> 8079 // element (i.e. has no check), could get used as an <option> 8080 // element, which needs a checkbox/radio, but it would not have 8081 // one. 8082 convertView = super.getView(position, null, parent); 8083 Container c = item(position); 8084 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 8085 // ListView does not draw dividers between disabled and 8086 // enabled elements. Use a LinearLayout to provide dividers 8087 LinearLayout layout = new LinearLayout(mContext); 8088 layout.setOrientation(LinearLayout.VERTICAL); 8089 if (position > 0) { 8090 View dividerTop = new View(mContext); 8091 dividerTop.setBackgroundResource( 8092 android.R.drawable.divider_horizontal_bright); 8093 layout.addView(dividerTop); 8094 } 8095 8096 if (Container.OPTGROUP == c.mEnabled) { 8097 // Currently select_dialog_multichoice uses CheckedTextViews. 8098 // If that changes, the class cast will no longer be valid. 8099 if (mMultiple) { 8100 Assert.assertTrue(convertView instanceof CheckedTextView); 8101 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 8102 } 8103 } else { 8104 // c.mEnabled == Container.OPTION_DISABLED 8105 // Draw the disabled element in a disabled state. 8106 convertView.setEnabled(false); 8107 } 8108 8109 layout.addView(convertView); 8110 if (position < getCount() - 1) { 8111 View dividerBottom = new View(mContext); 8112 dividerBottom.setBackgroundResource( 8113 android.R.drawable.divider_horizontal_bright); 8114 layout.addView(dividerBottom); 8115 } 8116 return layout; 8117 } 8118 return convertView; 8119 } 8120 8121 @Override 8122 public boolean hasStableIds() { 8123 // AdapterView's onChanged method uses this to determine whether 8124 // to restore the old state. Return false so that the old (out 8125 // of date) state does not replace the new, valid state. 8126 return false; 8127 } 8128 8129 private Container item(int position) { 8130 if (position < 0 || position >= getCount()) { 8131 return null; 8132 } 8133 return (Container) getItem(position); 8134 } 8135 8136 @Override 8137 public long getItemId(int position) { 8138 Container item = item(position); 8139 if (item == null) { 8140 return -1; 8141 } 8142 return item.mId; 8143 } 8144 8145 @Override 8146 public boolean areAllItemsEnabled() { 8147 return false; 8148 } 8149 8150 @Override 8151 public boolean isEnabled(int position) { 8152 Container item = item(position); 8153 if (item == null) { 8154 return false; 8155 } 8156 return Container.OPTION_ENABLED == item.mEnabled; 8157 } 8158 } 8159 8160 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 8161 mMultiple = true; 8162 mSelectedArray = selected; 8163 8164 int length = array.length; 8165 mContainers = new Container[length]; 8166 for (int i = 0; i < length; i++) { 8167 mContainers[i] = new Container(); 8168 mContainers[i].mString = array[i]; 8169 mContainers[i].mEnabled = enabled[i]; 8170 mContainers[i].mId = i; 8171 } 8172 } 8173 8174 private InvokeListBox(String[] array, int[] enabled, int selection) { 8175 mSelection = selection; 8176 mMultiple = false; 8177 8178 int length = array.length; 8179 mContainers = new Container[length]; 8180 for (int i = 0; i < length; i++) { 8181 mContainers[i] = new Container(); 8182 mContainers[i].mString = array[i]; 8183 mContainers[i].mEnabled = enabled[i]; 8184 mContainers[i].mId = i; 8185 } 8186 } 8187 8188 /* 8189 * Whenever the data set changes due to filtering, this class ensures 8190 * that the checked item remains checked. 8191 */ 8192 private class SingleDataSetObserver extends DataSetObserver { 8193 private long mCheckedId; 8194 private ListView mListView; 8195 private Adapter mAdapter; 8196 8197 /* 8198 * Create a new observer. 8199 * @param id The ID of the item to keep checked. 8200 * @param l ListView for getting and clearing the checked states 8201 * @param a Adapter for getting the IDs 8202 */ 8203 public SingleDataSetObserver(long id, ListView l, Adapter a) { 8204 mCheckedId = id; 8205 mListView = l; 8206 mAdapter = a; 8207 } 8208 8209 @Override 8210 public void onChanged() { 8211 // The filter may have changed which item is checked. Find the 8212 // item that the ListView thinks is checked. 8213 int position = mListView.getCheckedItemPosition(); 8214 long id = mAdapter.getItemId(position); 8215 if (mCheckedId != id) { 8216 // Clear the ListView's idea of the checked item, since 8217 // it is incorrect 8218 mListView.clearChoices(); 8219 // Search for mCheckedId. If it is in the filtered list, 8220 // mark it as checked 8221 int count = mAdapter.getCount(); 8222 for (int i = 0; i < count; i++) { 8223 if (mAdapter.getItemId(i) == mCheckedId) { 8224 mListView.setItemChecked(i, true); 8225 break; 8226 } 8227 } 8228 } 8229 } 8230 } 8231 8232 public void run() { 8233 final ListView listView = (ListView) LayoutInflater.from(mContext) 8234 .inflate(com.android.internal.R.layout.select_dialog, null); 8235 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 8236 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 8237 .setView(listView).setCancelable(true) 8238 .setInverseBackgroundForced(true); 8239 8240 if (mMultiple) { 8241 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 8242 public void onClick(DialogInterface dialog, int which) { 8243 mWebViewCore.sendMessage( 8244 EventHub.LISTBOX_CHOICES, 8245 adapter.getCount(), 0, 8246 listView.getCheckedItemPositions()); 8247 }}); 8248 b.setNegativeButton(android.R.string.cancel, 8249 new DialogInterface.OnClickListener() { 8250 public void onClick(DialogInterface dialog, int which) { 8251 mWebViewCore.sendMessage( 8252 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8253 }}); 8254 } 8255 mListBoxDialog = b.create(); 8256 listView.setAdapter(adapter); 8257 listView.setFocusableInTouchMode(true); 8258 // There is a bug (1250103) where the checks in a ListView with 8259 // multiple items selected are associated with the positions, not 8260 // the ids, so the items do not properly retain their checks when 8261 // filtered. Do not allow filtering on multiple lists until 8262 // that bug is fixed. 8263 8264 listView.setTextFilterEnabled(!mMultiple); 8265 if (mMultiple) { 8266 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 8267 int length = mSelectedArray.length; 8268 for (int i = 0; i < length; i++) { 8269 listView.setItemChecked(mSelectedArray[i], true); 8270 } 8271 } else { 8272 listView.setOnItemClickListener(new OnItemClickListener() { 8273 public void onItemClick(AdapterView<?> parent, View v, 8274 int position, long id) { 8275 // Rather than sending the message right away, send it 8276 // after the page regains focus. 8277 mListBoxMessage = Message.obtain(null, 8278 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 8279 mListBoxDialog.dismiss(); 8280 mListBoxDialog = null; 8281 } 8282 }); 8283 if (mSelection != -1) { 8284 listView.setSelection(mSelection); 8285 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 8286 listView.setItemChecked(mSelection, true); 8287 DataSetObserver observer = new SingleDataSetObserver( 8288 adapter.getItemId(mSelection), listView, adapter); 8289 adapter.registerDataSetObserver(observer); 8290 } 8291 } 8292 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 8293 public void onCancel(DialogInterface dialog) { 8294 mWebViewCore.sendMessage( 8295 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8296 mListBoxDialog = null; 8297 } 8298 }); 8299 mListBoxDialog.show(); 8300 } 8301 } 8302 8303 private Message mListBoxMessage; 8304 8305 /* 8306 * Request a dropdown menu for a listbox with multiple selection. 8307 * 8308 * @param array Labels for the listbox. 8309 * @param enabledArray State for each element in the list. See static 8310 * integers in Container class. 8311 * @param selectedArray Which positions are initally selected. 8312 */ 8313 void requestListBox(String[] array, int[] enabledArray, int[] 8314 selectedArray) { 8315 mPrivateHandler.post( 8316 new InvokeListBox(array, enabledArray, selectedArray)); 8317 } 8318 8319 /* 8320 * Request a dropdown menu for a listbox with single selection or a single 8321 * <select> element. 8322 * 8323 * @param array Labels for the listbox. 8324 * @param enabledArray State for each element in the list. See static 8325 * integers in Container class. 8326 * @param selection Which position is initally selected. 8327 */ 8328 void requestListBox(String[] array, int[] enabledArray, int selection) { 8329 mPrivateHandler.post( 8330 new InvokeListBox(array, enabledArray, selection)); 8331 } 8332 8333 // called by JNI 8334 private void sendMoveFocus(int frame, int node) { 8335 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 8336 new WebViewCore.CursorData(frame, node, 0, 0)); 8337 } 8338 8339 // called by JNI 8340 private void sendMoveMouse(int frame, int node, int x, int y) { 8341 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 8342 new WebViewCore.CursorData(frame, node, x, y)); 8343 } 8344 8345 /* 8346 * Send a mouse move event to the webcore thread. 8347 * 8348 * @param removeFocus Pass true to remove the WebTextView, if present. 8349 * @param stopPaintingCaret Stop drawing the blinking caret if true. 8350 * called by JNI 8351 */ 8352 @SuppressWarnings("unused") 8353 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 8354 if (removeFocus) { 8355 clearTextEntry(); 8356 } 8357 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 8358 stopPaintingCaret ? 1 : 0, 0, 8359 cursorData()); 8360 } 8361 8362 /** 8363 * Called by JNI to send a message to the webcore thread that the user 8364 * touched the webpage. 8365 * @param touchGeneration Generation number of the touch, to ignore touches 8366 * after a new one has been generated. 8367 * @param frame Pointer to the frame holding the node that was touched. 8368 * @param node Pointer to the node touched. 8369 * @param x x-position of the touch. 8370 * @param y y-position of the touch. 8371 */ 8372 private void sendMotionUp(int touchGeneration, 8373 int frame, int node, int x, int y) { 8374 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 8375 touchUpData.mMoveGeneration = touchGeneration; 8376 touchUpData.mFrame = frame; 8377 touchUpData.mNode = node; 8378 touchUpData.mX = x; 8379 touchUpData.mY = y; 8380 touchUpData.mNativeLayer = nativeScrollableLayer( 8381 x, y, touchUpData.mNativeLayerRect, null); 8382 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 8383 } 8384 8385 8386 private int getScaledMaxXScroll() { 8387 int width; 8388 if (mHeightCanMeasure == false) { 8389 width = getViewWidth() / 4; 8390 } else { 8391 Rect visRect = new Rect(); 8392 calcOurVisibleRect(visRect); 8393 width = visRect.width() / 2; 8394 } 8395 // FIXME the divisor should be retrieved from somewhere 8396 return viewToContentX(width); 8397 } 8398 8399 private int getScaledMaxYScroll() { 8400 int height; 8401 if (mHeightCanMeasure == false) { 8402 height = getViewHeight() / 4; 8403 } else { 8404 Rect visRect = new Rect(); 8405 calcOurVisibleRect(visRect); 8406 height = visRect.height() / 2; 8407 } 8408 // FIXME the divisor should be retrieved from somewhere 8409 // the closest thing today is hard-coded into ScrollView.java 8410 // (from ScrollView.java, line 363) int maxJump = height/2; 8411 return Math.round(height * mZoomManager.getInvScale()); 8412 } 8413 8414 /** 8415 * Called by JNI to invalidate view 8416 */ 8417 private void viewInvalidate() { 8418 invalidate(); 8419 } 8420 8421 /** 8422 * Pass the key directly to the page. This assumes that 8423 * nativePageShouldHandleShiftAndArrows() returned true. 8424 */ 8425 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 8426 int keyEventAction; 8427 int eventHubAction; 8428 if (down) { 8429 keyEventAction = KeyEvent.ACTION_DOWN; 8430 eventHubAction = EventHub.KEY_DOWN; 8431 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 8432 } else { 8433 keyEventAction = KeyEvent.ACTION_UP; 8434 eventHubAction = EventHub.KEY_UP; 8435 } 8436 8437 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 8438 1, (metaState & KeyEvent.META_SHIFT_ON) 8439 | (metaState & KeyEvent.META_ALT_ON) 8440 | (metaState & KeyEvent.META_SYM_ON) 8441 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 8442 mWebViewCore.sendMessage(eventHubAction, event); 8443 } 8444 8445 // return true if the key was handled 8446 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 8447 long time) { 8448 if (mNativeClass == 0) { 8449 return false; 8450 } 8451 mInitialHitTestResult = null; 8452 mLastCursorTime = time; 8453 mLastCursorBounds = nativeGetCursorRingBounds(); 8454 boolean keyHandled 8455 = nativeMoveCursor(keyCode, count, noScroll) == false; 8456 if (DebugFlags.WEB_VIEW) { 8457 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 8458 + " mLastCursorTime=" + mLastCursorTime 8459 + " handled=" + keyHandled); 8460 } 8461 if (keyHandled == false) { 8462 return keyHandled; 8463 } 8464 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 8465 if (contentCursorRingBounds.isEmpty()) return keyHandled; 8466 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 8467 // set last touch so that context menu related functions will work 8468 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 8469 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 8470 if (mHeightCanMeasure == false) { 8471 return keyHandled; 8472 } 8473 Rect visRect = new Rect(); 8474 calcOurVisibleRect(visRect); 8475 Rect outset = new Rect(visRect); 8476 int maxXScroll = visRect.width() / 2; 8477 int maxYScroll = visRect.height() / 2; 8478 outset.inset(-maxXScroll, -maxYScroll); 8479 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 8480 return keyHandled; 8481 } 8482 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 8483 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 8484 maxXScroll); 8485 if (maxH > 0) { 8486 pinScrollBy(maxH, 0, true, 0); 8487 } else { 8488 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 8489 -maxXScroll); 8490 if (maxH < 0) { 8491 pinScrollBy(maxH, 0, true, 0); 8492 } 8493 } 8494 if (mLastCursorBounds.isEmpty()) return keyHandled; 8495 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 8496 return keyHandled; 8497 } 8498 if (DebugFlags.WEB_VIEW) { 8499 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 8500 + contentCursorRingBounds); 8501 } 8502 requestRectangleOnScreen(viewCursorRingBounds); 8503 return keyHandled; 8504 } 8505 8506 /** 8507 * @return Whether accessibility script has been injected. 8508 */ 8509 private boolean accessibilityScriptInjected() { 8510 // TODO: Maybe the injected script should announce its presence in 8511 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 8512 // will check that as one of the conditions it looks for 8513 return mAccessibilityScriptInjected; 8514 } 8515 8516 /** 8517 * Set the background color. It's white by default. Pass 8518 * zero to make the view transparent. 8519 * @param color the ARGB color described by Color.java 8520 */ 8521 @Override 8522 public void setBackgroundColor(int color) { 8523 mBackgroundColor = color; 8524 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 8525 } 8526 8527 /** 8528 * @deprecated This method is now obsolete. 8529 */ 8530 @Deprecated 8531 public void debugDump() { 8532 nativeDebugDump(); 8533 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 8534 } 8535 8536 /** 8537 * Draw the HTML page into the specified canvas. This call ignores any 8538 * view-specific zoom, scroll offset, or other changes. It does not draw 8539 * any view-specific chrome, such as progress or URL bars. 8540 * 8541 * @hide only needs to be accessible to Browser and testing 8542 */ 8543 public void drawPage(Canvas canvas) { 8544 nativeDraw(canvas, 0, 0, false); 8545 } 8546 8547 /** 8548 * Enable the communication b/t the webView and VideoViewProxy 8549 * 8550 * @hide only used by the Browser 8551 */ 8552 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 8553 mHTML5VideoViewProxy = proxy; 8554 } 8555 8556 /** 8557 * Enable expanded tiles bound for smoother scrolling. 8558 * 8559 * @hide only used by the Browser 8560 */ 8561 public void setExpandedTileBounds(boolean enabled) { 8562 nativeSetExpandedTileBounds(enabled); 8563 } 8564 8565 /** 8566 * Set the time to wait between passing touches to WebCore. See also the 8567 * TOUCH_SENT_INTERVAL member for further discussion. 8568 * 8569 * @hide This is only used by the DRT test application. 8570 */ 8571 public void setTouchInterval(int interval) { 8572 mCurrentTouchInterval = interval; 8573 } 8574 8575 /** 8576 * Update our cache with updatedText. 8577 * @param updatedText The new text to put in our cache. 8578 */ 8579 /* package */ void updateCachedTextfield(String updatedText) { 8580 // Also place our generation number so that when we look at the cache 8581 // we recognize that it is up to date. 8582 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 8583 } 8584 8585 /*package*/ void autoFillForm(int autoFillQueryId) { 8586 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 8587 } 8588 8589 /* package */ ViewManager getViewManager() { 8590 return mViewManager; 8591 } 8592 8593 private native int nativeCacheHitFramePointer(); 8594 private native boolean nativeCacheHitIsPlugin(); 8595 private native Rect nativeCacheHitNodeBounds(); 8596 private native int nativeCacheHitNodePointer(); 8597 /* package */ native void nativeClearCursor(); 8598 private native void nativeCreate(int ptr); 8599 private native int nativeCursorFramePointer(); 8600 private native Rect nativeCursorNodeBounds(); 8601 private native int nativeCursorNodePointer(); 8602 private native boolean nativeCursorIntersects(Rect visibleRect); 8603 private native boolean nativeCursorIsAnchor(); 8604 private native boolean nativeCursorIsTextInput(); 8605 private native Point nativeCursorPosition(); 8606 private native String nativeCursorText(); 8607 /** 8608 * Returns true if the native cursor node says it wants to handle key events 8609 * (ala plugins). This can only be called if mNativeClass is non-zero! 8610 */ 8611 private native boolean nativeCursorWantsKeyEvents(); 8612 private native void nativeDebugDump(); 8613 private native void nativeDestroy(); 8614 8615 /** 8616 * Draw the picture set with a background color and extra. If 8617 * "splitIfNeeded" is true and the return value is not 0, the return value 8618 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 8619 * native allocation can be freed. 8620 */ 8621 private native int nativeDraw(Canvas canvas, int color, int extra, 8622 boolean splitIfNeeded); 8623 private native void nativeDumpDisplayTree(String urlOrNull); 8624 private native boolean nativeEvaluateLayersAnimations(); 8625 private native int nativeGetDrawGLFunction(Rect rect, Rect viewRect, 8626 float scale, int extras); 8627 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect); 8628 private native boolean nativeDrawGL(Rect rect, float scale, int extras); 8629 private native void nativeExtendSelection(int x, int y); 8630 private native int nativeFindAll(String findLower, String findUpper, 8631 boolean sameAsLastSearch); 8632 private native void nativeFindNext(boolean forward); 8633 /* package */ native int nativeFocusCandidateFramePointer(); 8634 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 8635 /* package */ native boolean nativeFocusCandidateIsPassword(); 8636 private native boolean nativeFocusCandidateIsRtlText(); 8637 private native boolean nativeFocusCandidateIsTextInput(); 8638 /* package */ native int nativeFocusCandidateMaxLength(); 8639 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 8640 /* package */ native String nativeFocusCandidateName(); 8641 private native Rect nativeFocusCandidateNodeBounds(); 8642 /** 8643 * @return A Rect with left, top, right, bottom set to the corresponding 8644 * padding values in the focus candidate, if it is a textfield/textarea with 8645 * a style. Otherwise return null. This is not actually a rectangle; Rect 8646 * is being used to pass four integers. 8647 */ 8648 private native Rect nativeFocusCandidatePaddingRect(); 8649 /* package */ native int nativeFocusCandidatePointer(); 8650 private native String nativeFocusCandidateText(); 8651 /* package */ native float nativeFocusCandidateTextSize(); 8652 /* package */ native int nativeFocusCandidateLineHeight(); 8653 /** 8654 * Returns an integer corresponding to WebView.cpp::type. 8655 * See WebTextView.setType() 8656 */ 8657 private native int nativeFocusCandidateType(); 8658 private native boolean nativeFocusIsPlugin(); 8659 private native Rect nativeFocusNodeBounds(); 8660 /* package */ native int nativeFocusNodePointer(); 8661 private native Rect nativeGetCursorRingBounds(); 8662 private native String nativeGetSelection(); 8663 private native boolean nativeHasCursorNode(); 8664 private native boolean nativeHasFocusNode(); 8665 private native void nativeHideCursor(); 8666 private native boolean nativeHitSelection(int x, int y); 8667 private native String nativeImageURI(int x, int y); 8668 private native void nativeInstrumentReport(); 8669 private native Rect nativeLayerBounds(int layer); 8670 /* package */ native boolean nativeMoveCursorToNextTextInput(); 8671 // return true if the page has been scrolled 8672 private native boolean nativeMotionUp(int x, int y, int slop); 8673 // returns false if it handled the key 8674 private native boolean nativeMoveCursor(int keyCode, int count, 8675 boolean noScroll); 8676 private native int nativeMoveGeneration(); 8677 private native void nativeMoveSelection(int x, int y); 8678 /** 8679 * @return true if the page should get the shift and arrow keys, rather 8680 * than select text/navigation. 8681 * 8682 * If the focus is a plugin, or if the focus and cursor match and are 8683 * a contentEditable element, then the page should handle these keys. 8684 */ 8685 private native boolean nativePageShouldHandleShiftAndArrows(); 8686 private native boolean nativePointInNavCache(int x, int y, int slop); 8687 // Like many other of our native methods, you must make sure that 8688 // mNativeClass is not null before calling this method. 8689 private native void nativeRecordButtons(boolean focused, 8690 boolean pressed, boolean invalidate); 8691 private native void nativeResetSelection(); 8692 private native Point nativeSelectableText(); 8693 private native void nativeSelectAll(); 8694 private native void nativeSelectBestAt(Rect rect); 8695 private native void nativeSelectAt(int x, int y); 8696 private native int nativeSelectionX(); 8697 private native int nativeSelectionY(); 8698 private native int nativeFindIndex(); 8699 private native void nativeSetExtendSelection(); 8700 private native void nativeSetFindIsEmpty(); 8701 private native void nativeSetFindIsUp(boolean isUp); 8702 private native void nativeSetHeightCanMeasure(boolean measure); 8703 private native void nativeSetBaseLayer(int layer, Region invalRegion, 8704 boolean showVisualIndicator, boolean isPictureAfterFirstLayout); 8705 private native void nativeShowCursorTimed(); 8706 private native void nativeReplaceBaseContent(int content); 8707 private native void nativeCopyBaseContentToPicture(Picture pict); 8708 private native boolean nativeHasContent(); 8709 private native void nativeSetSelectionPointer(boolean set, 8710 float scale, int x, int y); 8711 private native boolean nativeStartSelection(int x, int y); 8712 private native void nativeStopGL(); 8713 private native Rect nativeSubtractLayers(Rect content); 8714 private native int nativeTextGeneration(); 8715 // Never call this version except by updateCachedTextfield(String) - 8716 // we always want to pass in our generation number. 8717 private native void nativeUpdateCachedTextfield(String updatedText, 8718 int generation); 8719 private native boolean nativeWordSelection(int x, int y); 8720 // return NO_LEFTEDGE means failure. 8721 static final int NO_LEFTEDGE = -1; 8722 native int nativeGetBlockLeftEdge(int x, int y, float scale); 8723 8724 private native void nativeSetExpandedTileBounds(boolean enabled); 8725 8726 // Returns a pointer to the scrollable LayerAndroid at the given point. 8727 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 8728 Rect scrollBounds); 8729 /** 8730 * Scroll the specified layer. 8731 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 8732 * @param newX Destination x position to which to scroll. 8733 * @param newY Destination y position to which to scroll. 8734 * @return True if the layer is successfully scrolled. 8735 */ 8736 private native boolean nativeScrollLayer(int layer, int newX, int newY); 8737} 8738