WebView.java revision 63a1b0cefef3c27d3b5b062dfaf36501aff44d56
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.Shader; 47import android.graphics.drawable.Drawable; 48import android.net.Proxy; 49import android.net.ProxyProperties; 50import android.net.Uri; 51import android.net.http.SslCertificate; 52import android.os.AsyncTask; 53import android.os.Bundle; 54import android.os.Handler; 55import android.os.Message; 56import android.provider.Settings; 57import android.speech.tts.TextToSpeech; 58import android.text.Selection; 59import android.text.Spannable; 60import android.util.AttributeSet; 61import android.util.EventLog; 62import android.util.Log; 63import android.view.Gravity; 64import android.view.HardwareCanvas; 65import android.view.InputDevice; 66import android.view.KeyCharacterMap; 67import android.view.KeyEvent; 68import android.view.LayoutInflater; 69import android.view.MotionEvent; 70import android.view.ScaleGestureDetector; 71import android.view.SoundEffectConstants; 72import android.view.VelocityTracker; 73import android.view.View; 74import android.view.ViewConfiguration; 75import android.view.ViewGroup; 76import android.view.ViewParent; 77import android.view.ViewTreeObserver; 78import android.view.accessibility.AccessibilityManager; 79import android.view.inputmethod.EditorInfo; 80import android.view.inputmethod.InputConnection; 81import android.view.inputmethod.InputMethodManager; 82import android.webkit.WebTextView.AutoCompleteAdapter; 83import android.webkit.WebViewCore.EventHub; 84import android.webkit.WebViewCore.TouchEventData; 85import android.webkit.WebViewCore.TouchHighlightData; 86import android.widget.AbsoluteLayout; 87import android.widget.Adapter; 88import android.widget.AdapterView; 89import android.widget.AdapterView.OnItemClickListener; 90import android.widget.ArrayAdapter; 91import android.widget.CheckedTextView; 92import android.widget.LinearLayout; 93import android.widget.ListView; 94import android.widget.OverScroller; 95import android.widget.Toast; 96 97import java.io.File; 98import java.io.FileInputStream; 99import java.io.FileNotFoundException; 100import java.io.FileOutputStream; 101import java.net.URLDecoder; 102import java.util.ArrayList; 103import java.util.HashMap; 104import java.util.HashSet; 105import java.util.List; 106import java.util.Map; 107import java.util.Set; 108import java.util.Vector; 109import java.util.regex.Matcher; 110import java.util.regex.Pattern; 111 112import junit.framework.Assert; 113 114/** 115 * <p>A View that displays web pages. This class is the basis upon which you 116 * can roll your own web browser or simply display some online content within your Activity. 117 * It uses the WebKit rendering engine to display 118 * web pages and includes methods to navigate forward and backward 119 * through a history, zoom in and out, perform text searches and more.</p> 120 * <p>To enable the built-in zoom, set 121 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 122 * (introduced in API version 3). 123 * <p>Note that, in order for your Activity to access the Internet and load web pages 124 * in a WebView, you must add the {@code INTERNET} permissions to your 125 * Android Manifest file:</p> 126 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 127 * 128 * <p>This must be a child of the <a 129 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 130 * element.</p> 131 * 132 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 133 * tutorial</a>.</p> 134 * 135 * <h3>Basic usage</h3> 136 * 137 * <p>By default, a WebView provides no browser-like widgets, does not 138 * enable JavaScript and web page errors are ignored. If your goal is only 139 * to display some HTML as a part of your UI, this is probably fine; 140 * the user won't need to interact with the web page beyond reading 141 * it, and the web page won't need to interact with the user. If you 142 * actually want a full-blown web browser, then you probably want to 143 * invoke the Browser application with a URL Intent rather than show it 144 * with a WebView. For example: 145 * <pre> 146 * Uri uri = Uri.parse("http://www.example.com"); 147 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 148 * startActivity(intent); 149 * </pre> 150 * <p>See {@link android.content.Intent} for more information.</p> 151 * 152 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 153 * or set the entire Activity window as a WebView during {@link 154 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 155 * <pre class="prettyprint"> 156 * WebView webview = new WebView(this); 157 * setContentView(webview); 158 * </pre> 159 * 160 * <p>Then load the desired web page:</p> 161 * <pre> 162 * // Simplest usage: note that an exception will NOT be thrown 163 * // if there is an error loading this page (see below). 164 * webview.loadUrl("http://slashdot.org/"); 165 * 166 * // OR, you can also load from an HTML string: 167 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 168 * webview.loadData(summary, "text/html", "utf-8"); 169 * // ... although note that there are restrictions on what this HTML can do. 170 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 171 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 172 * </pre> 173 * 174 * <p>A WebView has several customization points where you can add your 175 * own behavior. These are:</p> 176 * 177 * <ul> 178 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 179 * This class is called when something that might impact a 180 * browser UI happens, for instance, progress updates and 181 * JavaScript alerts are sent here (see <a 182 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 183 * </li> 184 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 185 * It will be called when things happen that impact the 186 * rendering of the content, eg, errors or form submissions. You 187 * can also intercept URL loading here (via {@link 188 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 189 * shouldOverrideUrlLoading()}).</li> 190 * <li>Modifying the {@link android.webkit.WebSettings}, such as 191 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 192 * setJavaScriptEnabled()}. </li> 193 * <li>Adding JavaScript-to-Java interfaces with the {@link 194 * android.webkit.WebView#addJavascriptInterface} method. 195 * This lets you bind Java objects into the WebView so they can be 196 * controlled from the web pages JavaScript.</li> 197 * </ul> 198 * 199 * <p>Here's a more complicated example, showing error handling, 200 * settings, and progress notification:</p> 201 * 202 * <pre class="prettyprint"> 203 * // Let's display the progress in the activity title bar, like the 204 * // browser app does. 205 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 206 * 207 * webview.getSettings().setJavaScriptEnabled(true); 208 * 209 * final Activity activity = this; 210 * webview.setWebChromeClient(new WebChromeClient() { 211 * public void onProgressChanged(WebView view, int progress) { 212 * // Activities and WebViews measure progress with different scales. 213 * // The progress meter will automatically disappear when we reach 100% 214 * activity.setProgress(progress * 1000); 215 * } 216 * }); 217 * webview.setWebViewClient(new WebViewClient() { 218 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 219 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 220 * } 221 * }); 222 * 223 * webview.loadUrl("http://slashdot.org/"); 224 * </pre> 225 * 226 * <h3>Cookie and window management</h3> 227 * 228 * <p>For obvious security reasons, your application has its own 229 * cache, cookie store etc.—it does not share the Browser 230 * application's data. Cookies are managed on a separate thread, so 231 * operations like index building don't block the UI 232 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 233 * if you want to use cookies in your application. 234 * </p> 235 * 236 * <p>By default, requests by the HTML to open new windows are 237 * ignored. This is true whether they be opened by JavaScript or by 238 * the target attribute on a link. You can customize your 239 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 240 * and render them in whatever manner you want.</p> 241 * 242 * <p>The standard behavior for an Activity is to be destroyed and 243 * recreated when the device orientation or any other configuration changes. This will cause 244 * the WebView to reload the current page. If you don't want that, you 245 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 246 * changes, and then just leave the WebView alone. It'll automatically 247 * re-orient itself as appropriate. Read <a 248 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 249 * more information about how to handle configuration changes during runtime.</p> 250 * 251 * 252 * <h3>Building web pages to support different screen densities</h3> 253 * 254 * <p>The screen density of a device is based on the screen resolution. A screen with low density 255 * has fewer available pixels per inch, where a screen with high density 256 * has more — sometimes significantly more — pixels per inch. The density of a 257 * screen is important because, other things being equal, a UI element (such as a button) whose 258 * height and width are defined in terms of screen pixels will appear larger on the lower density 259 * screen and smaller on the higher density screen. 260 * For simplicity, Android collapses all actual screen densities into three generalized densities: 261 * high, medium, and low.</p> 262 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 263 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 264 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 265 * are bigger). 266 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 267 * you (as a web developer) target screens with different screen densities.</p> 268 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 269 * <ul> 270 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 271 * default scaling factor used for the current device. For example, if the value of {@code 272 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 273 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 274 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 275 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 276 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 277 * (discussed below), then you can stop this default scaling behavior.</li> 278 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 279 * densities for which this style sheet is to be used. The corresponding value should be either 280 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 281 * density, or high density screens, respectively. For example: 282 * <pre> 283 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 284 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 285 * which is the high density pixel ratio.</p> 286 * </li> 287 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 288 * this to specify the target density for which the web page is designed, using the following 289 * values: 290 * <ul> 291 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 292 * occurs.</li> 293 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 294 * as appropriate.</li> 295 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 296 * low density screens scale down. This is also the default behavior.</li> 297 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 298 * as appropriate.</li> 299 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 300 * values are 70-400).</li> 301 * </ul> 302 * <p>Here's an example meta tag to specify the target density:</p> 303 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 304 * </ul> 305 * <p>If you want to modify your web page for different densities, by using the {@code 306 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 307 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 308 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 309 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 310 * 311 * 312 */ 313@Widget 314public class WebView extends AbsoluteLayout 315 implements ViewTreeObserver.OnGlobalFocusChangeListener, 316 ViewGroup.OnHierarchyChangeListener { 317 318 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 319 public void onGlobalLayout() { 320 if (isShown()) { 321 setGLRectViewport(); 322 } 323 } 324 } 325 326 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 327 public void onScrollChanged() { 328 if (isShown()) { 329 setGLRectViewport(); 330 } 331 } 332 } 333 334 // The listener to capture global layout change event. 335 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 336 337 // The listener to capture scroll event. 338 private InnerScrollChangedListener mScrollChangedListener = null; 339 340 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 341 // the screen all-the-time. Good for profiling our drawing code 342 static private final boolean AUTO_REDRAW_HACK = false; 343 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 344 private boolean mAutoRedraw; 345 346 // Reference to the AlertDialog displayed by InvokeListBox. 347 // It's used to dismiss the dialog in destroy if not done before. 348 private AlertDialog mListBoxDialog = null; 349 350 static final String LOGTAG = "webview"; 351 352 private ZoomManager mZoomManager; 353 354 private final Rect mGLRectViewport = new Rect(); 355 private final Rect mViewRectViewport = new Rect(); 356 private boolean mGLViewportEmpty = false; 357 358 /** 359 * Transportation object for returning WebView across thread boundaries. 360 */ 361 public class WebViewTransport { 362 private WebView mWebview; 363 364 /** 365 * Set the WebView to the transportation object. 366 * @param webview The WebView to transport. 367 */ 368 public synchronized void setWebView(WebView webview) { 369 mWebview = webview; 370 } 371 372 /** 373 * Return the WebView object. 374 * @return WebView The transported WebView object. 375 */ 376 public synchronized WebView getWebView() { 377 return mWebview; 378 } 379 } 380 381 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 382 private final CallbackProxy mCallbackProxy; 383 384 private final WebViewDatabase mDatabase; 385 386 // SSL certificate for the main top-level page (if secure) 387 private SslCertificate mCertificate; 388 389 // Native WebView pointer that is 0 until the native object has been 390 // created. 391 private int mNativeClass; 392 // This would be final but it needs to be set to null when the WebView is 393 // destroyed. 394 private WebViewCore mWebViewCore; 395 // Handler for dispatching UI messages. 396 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 397 private WebTextView mWebTextView; 398 // Used to ignore changes to webkit text that arrives to the UI side after 399 // more key events. 400 private int mTextGeneration; 401 402 /* package */ void incrementTextGeneration() { mTextGeneration++; } 403 404 // Used by WebViewCore to create child views. 405 /* package */ final ViewManager mViewManager; 406 407 // Used to display in full screen mode 408 PluginFullScreenHolder mFullScreenHolder; 409 410 /** 411 * Position of the last touch event in pixels. 412 * Use integer to prevent loss of dragging delta calculation accuracy; 413 * which was done in float and converted to integer, and resulted in gradual 414 * and compounding touch position and view dragging mismatch. 415 */ 416 private int mLastTouchX; 417 private int mLastTouchY; 418 419 /** 420 * Time of the last touch event. 421 */ 422 private long mLastTouchTime; 423 424 /** 425 * Time of the last time sending touch event to WebViewCore 426 */ 427 private long mLastSentTouchTime; 428 429 /** 430 * The minimum elapsed time before sending another ACTION_MOVE event to 431 * WebViewCore. This really should be tuned for each type of the devices. 432 * For example in Google Map api test case, it takes Dream device at least 433 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 434 * triggering the layout and drawing the picture. While the same process 435 * takes 60+ms on the current high speed device. If we make 436 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 437 * to WebViewCore queue and the real layout and draw events will be pushed 438 * to further, which slows down the refresh rate. Choose 50 to favor the 439 * current high speed devices. For Dream like devices, 100 is a better 440 * choice. Maybe make this in the buildspec later. 441 * (Update 12/14/2010: changed to 0 since current device should be able to 442 * handle the raw events and Map team voted to have the raw events too. 443 */ 444 private static final int TOUCH_SENT_INTERVAL = 0; 445 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 446 447 /** 448 * Helper class to get velocity for fling 449 */ 450 VelocityTracker mVelocityTracker; 451 private int mMaximumFling; 452 private float mLastVelocity; 453 private float mLastVelX; 454 private float mLastVelY; 455 456 // The id of the native layer being scrolled. 457 private int mScrollingLayer; 458 private Rect mScrollingLayerRect = new Rect(); 459 460 // only trigger accelerated fling if the new velocity is at least 461 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 462 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 463 464 /** 465 * Touch mode 466 */ 467 private int mTouchMode = TOUCH_DONE_MODE; 468 private static final int TOUCH_INIT_MODE = 1; 469 private static final int TOUCH_DRAG_START_MODE = 2; 470 private static final int TOUCH_DRAG_MODE = 3; 471 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 472 private static final int TOUCH_SHORTPRESS_MODE = 5; 473 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 474 private static final int TOUCH_DONE_MODE = 7; 475 private static final int TOUCH_PINCH_DRAG = 8; 476 private static final int TOUCH_DRAG_LAYER_MODE = 9; 477 478 // Whether to forward the touch events to WebCore 479 // Can only be set by WebKit via JNI. 480 private boolean mForwardTouchEvents = false; 481 482 // Whether to prevent default during touch. The initial value depends on 483 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 484 // for touch down. Otherwise UI will wait for the answer of the first 485 // confirmed move before taking over the control. 486 private static final int PREVENT_DEFAULT_NO = 0; 487 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 488 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 489 private static final int PREVENT_DEFAULT_YES = 3; 490 private static final int PREVENT_DEFAULT_IGNORE = 4; 491 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 492 493 // true when the touch movement exceeds the slop 494 private boolean mConfirmMove; 495 496 // if true, touch events will be first processed by WebCore, if prevent 497 // default is not set, the UI will continue handle them. 498 private boolean mDeferTouchProcess; 499 500 // to avoid interfering with the current touch events, track them 501 // separately. Currently no snapping or fling in the deferred process mode 502 private int mDeferTouchMode = TOUCH_DONE_MODE; 503 private float mLastDeferTouchX; 504 private float mLastDeferTouchY; 505 506 // To keep track of whether the current drag was initiated by a WebTextView, 507 // so that we know not to hide the cursor 508 boolean mDragFromTextInput; 509 510 // Whether or not to draw the cursor ring. 511 private boolean mDrawCursorRing = true; 512 513 // true if onPause has been called (and not onResume) 514 private boolean mIsPaused; 515 516 private HitTestResult mInitialHitTestResult; 517 518 /** 519 * Customizable constant 520 */ 521 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 522 private int mTouchSlopSquare; 523 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 524 private int mDoubleTapSlopSquare; 525 // pre-computed density adjusted navigation slop 526 private int mNavSlop; 527 // This should be ViewConfiguration.getTapTimeout() 528 // But system time out is 100ms, which is too short for the browser. 529 // In the browser, if it switches out of tap too soon, jump tap won't work. 530 private static final int TAP_TIMEOUT = 200; 531 // This should be ViewConfiguration.getLongPressTimeout() 532 // But system time out is 500ms, which is too short for the browser. 533 // With a short timeout, it's difficult to treat trigger a short press. 534 private static final int LONG_PRESS_TIMEOUT = 1000; 535 // needed to avoid flinging after a pause of no movement 536 private static final int MIN_FLING_TIME = 250; 537 // draw unfiltered after drag is held without movement 538 private static final int MOTIONLESS_TIME = 100; 539 // The amount of content to overlap between two screens when going through 540 // pages with the space bar, in pixels. 541 private static final int PAGE_SCROLL_OVERLAP = 24; 542 543 /** 544 * These prevent calling requestLayout if either dimension is fixed. This 545 * depends on the layout parameters and the measure specs. 546 */ 547 boolean mWidthCanMeasure; 548 boolean mHeightCanMeasure; 549 550 // Remember the last dimensions we sent to the native side so we can avoid 551 // sending the same dimensions more than once. 552 int mLastWidthSent; 553 int mLastHeightSent; 554 // Since view height sent to webkit could be fixed to avoid relayout, this 555 // value records the last sent actual view height. 556 int mLastActualHeightSent; 557 558 private int mContentWidth; // cache of value from WebViewCore 559 private int mContentHeight; // cache of value from WebViewCore 560 561 // Need to have the separate control for horizontal and vertical scrollbar 562 // style than the View's single scrollbar style 563 private boolean mOverlayHorizontalScrollbar = true; 564 private boolean mOverlayVerticalScrollbar = false; 565 566 // our standard speed. this way small distances will be traversed in less 567 // time than large distances, but we cap the duration, so that very large 568 // distances won't take too long to get there. 569 private static final int STD_SPEED = 480; // pixels per second 570 // time for the longest scroll animation 571 private static final int MAX_DURATION = 750; // milliseconds 572 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 573 574 // Used by OverScrollGlow 575 OverScroller mScroller; 576 577 private boolean mInOverScrollMode = false; 578 private static Paint mOverScrollBackground; 579 private static Paint mOverScrollBorder; 580 581 private boolean mWrapContent; 582 private static final int MOTIONLESS_FALSE = 0; 583 private static final int MOTIONLESS_PENDING = 1; 584 private static final int MOTIONLESS_TRUE = 2; 585 private static final int MOTIONLESS_IGNORE = 3; 586 private int mHeldMotionless; 587 588 // An instance for injecting accessibility in WebViews with disabled 589 // JavaScript or ones for which no accessibility script exists 590 private AccessibilityInjector mAccessibilityInjector; 591 592 // flag indicating if accessibility script is injected so we 593 // know to handle Shift and arrows natively first 594 private boolean mAccessibilityScriptInjected; 595 596 // the color used to highlight the touch rectangles 597 private static final int mHightlightColor = 0x33000000; 598 // the round corner for the highlight path 599 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 600 // the region indicating where the user touched on the screen 601 private Region mTouchHighlightRegion = new Region(); 602 // the paint for the touch highlight 603 private Paint mTouchHightlightPaint; 604 // debug only 605 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 606 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 607 private Paint mTouchCrossHairColor; 608 private int mTouchHighlightX; 609 private int mTouchHighlightY; 610 611 /* 612 * Private message ids 613 */ 614 private static final int REMEMBER_PASSWORD = 1; 615 private static final int NEVER_REMEMBER_PASSWORD = 2; 616 private static final int SWITCH_TO_SHORTPRESS = 3; 617 private static final int SWITCH_TO_LONGPRESS = 4; 618 private static final int RELEASE_SINGLE_TAP = 5; 619 private static final int REQUEST_FORM_DATA = 6; 620 private static final int RESUME_WEBCORE_PRIORITY = 7; 621 private static final int DRAG_HELD_MOTIONLESS = 8; 622 private static final int AWAKEN_SCROLL_BARS = 9; 623 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 624 private static final int SCROLL_SELECT_TEXT = 11; 625 626 627 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 628 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 629 630 /* 631 * Package message ids 632 */ 633 static final int SCROLL_TO_MSG_ID = 101; 634 static final int NEW_PICTURE_MSG_ID = 105; 635 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 636 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 637 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 638 static final int UPDATE_ZOOM_RANGE = 109; 639 static final int UNHANDLED_NAV_KEY = 110; 640 static final int CLEAR_TEXT_ENTRY = 111; 641 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 642 static final int SHOW_RECT_MSG_ID = 113; 643 static final int LONG_PRESS_CENTER = 114; 644 static final int PREVENT_TOUCH_ID = 115; 645 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 646 // obj=Rect in doc coordinates 647 static final int INVAL_RECT_MSG_ID = 117; 648 static final int REQUEST_KEYBOARD = 118; 649 static final int DO_MOTION_UP = 119; 650 static final int SHOW_FULLSCREEN = 120; 651 static final int HIDE_FULLSCREEN = 121; 652 static final int DOM_FOCUS_CHANGED = 122; 653 static final int REPLACE_BASE_CONTENT = 123; 654 static final int FORM_DID_BLUR = 124; 655 static final int RETURN_LABEL = 125; 656 static final int FIND_AGAIN = 126; 657 static final int CENTER_FIT_RECT = 127; 658 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 659 static final int SET_SCROLLBAR_MODES = 129; 660 static final int SELECTION_STRING_CHANGED = 130; 661 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 662 static final int SAVE_WEBARCHIVE_FINISHED = 132; 663 664 static final int SET_AUTOFILLABLE = 133; 665 static final int AUTOFILL_COMPLETE = 134; 666 667 static final int SELECT_AT = 135; 668 static final int SCREEN_ON = 136; 669 670 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 671 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 672 673 static final String[] HandlerPrivateDebugString = { 674 "REMEMBER_PASSWORD", // = 1; 675 "NEVER_REMEMBER_PASSWORD", // = 2; 676 "SWITCH_TO_SHORTPRESS", // = 3; 677 "SWITCH_TO_LONGPRESS", // = 4; 678 "RELEASE_SINGLE_TAP", // = 5; 679 "REQUEST_FORM_DATA", // = 6; 680 "RESUME_WEBCORE_PRIORITY", // = 7; 681 "DRAG_HELD_MOTIONLESS", // = 8; 682 "AWAKEN_SCROLL_BARS", // = 9; 683 "PREVENT_DEFAULT_TIMEOUT", // = 10; 684 "SCROLL_SELECT_TEXT" // = 11; 685 }; 686 687 static final String[] HandlerPackageDebugString = { 688 "SCROLL_TO_MSG_ID", // = 101; 689 "102", // = 102; 690 "103", // = 103; 691 "104", // = 104; 692 "NEW_PICTURE_MSG_ID", // = 105; 693 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 694 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 695 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 696 "UPDATE_ZOOM_RANGE", // = 109; 697 "UNHANDLED_NAV_KEY", // = 110; 698 "CLEAR_TEXT_ENTRY", // = 111; 699 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 700 "SHOW_RECT_MSG_ID", // = 113; 701 "LONG_PRESS_CENTER", // = 114; 702 "PREVENT_TOUCH_ID", // = 115; 703 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 704 "INVAL_RECT_MSG_ID", // = 117; 705 "REQUEST_KEYBOARD", // = 118; 706 "DO_MOTION_UP", // = 119; 707 "SHOW_FULLSCREEN", // = 120; 708 "HIDE_FULLSCREEN", // = 121; 709 "DOM_FOCUS_CHANGED", // = 122; 710 "REPLACE_BASE_CONTENT", // = 123; 711 "FORM_DID_BLUR", // = 124; 712 "RETURN_LABEL", // = 125; 713 "FIND_AGAIN", // = 126; 714 "CENTER_FIT_RECT", // = 127; 715 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 716 "SET_SCROLLBAR_MODES", // = 129; 717 "SELECTION_STRING_CHANGED", // = 130; 718 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 719 "SAVE_WEBARCHIVE_FINISHED", // = 132; 720 "SET_AUTOFILLABLE", // = 133; 721 "AUTOFILL_COMPLETE", // = 134; 722 "SELECT_AT", // = 135; 723 "SCREEN_ON" // = 136; 724 }; 725 726 // If the site doesn't use the viewport meta tag to specify the viewport, 727 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 728 static final int DEFAULT_VIEWPORT_WIDTH = 980; 729 730 // normally we try to fit the content to the minimum preferred width 731 // calculated by the Webkit. To avoid the bad behavior when some site's 732 // minimum preferred width keeps growing when changing the viewport width or 733 // the minimum preferred width is huge, an upper limit is needed. 734 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 735 736 // initial scale in percent. 0 means using default. 737 private int mInitialScaleInPercent = 0; 738 739 // Whether or not a scroll event should be sent to webkit. This is only set 740 // to false when restoring the scroll position. 741 private boolean mSendScrollEvent = true; 742 743 private int mSnapScrollMode = SNAP_NONE; 744 private static final int SNAP_NONE = 0; 745 private static final int SNAP_LOCK = 1; // not a separate state 746 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 747 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 748 private boolean mSnapPositive; 749 750 // keep these in sync with their counterparts in WebView.cpp 751 private static final int DRAW_EXTRAS_NONE = 0; 752 private static final int DRAW_EXTRAS_FIND = 1; 753 private static final int DRAW_EXTRAS_SELECTION = 2; 754 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 755 756 // keep this in sync with WebCore:ScrollbarMode in WebKit 757 private static final int SCROLLBAR_AUTO = 0; 758 private static final int SCROLLBAR_ALWAYSOFF = 1; 759 // as we auto fade scrollbar, this is ignored. 760 private static final int SCROLLBAR_ALWAYSON = 2; 761 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 762 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 763 764 // constants for determining script injection strategy 765 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 766 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 767 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 768 769 // the alias via which accessibility JavaScript interface is exposed 770 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 771 772 // JavaScript to inject the script chooser which will 773 // pick the right script for the current URL 774 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 775 "javascript:(function() {" + 776 " var chooser = document.createElement('script');" + 777 " chooser.type = 'text/javascript';" + 778 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 779 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 780 " })();"; 781 782 // Regular expression that matches the "axs" URL parameter. 783 // The value of 0 means the accessibility script is opted out 784 // The value of 1 means the accessibility script is already injected 785 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 786 787 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 788 private TextToSpeech mTextToSpeech; 789 790 // variable to cache the above pattern in case accessibility is enabled. 791 private Pattern mMatchAxsUrlParameterPattern; 792 793 /** 794 * Max distance to overscroll by in pixels. 795 * This how far content can be pulled beyond its normal bounds by the user. 796 */ 797 private int mOverscrollDistance; 798 799 /** 800 * Max distance to overfling by in pixels. 801 * This is how far flinged content can move beyond the end of its normal bounds. 802 */ 803 private int mOverflingDistance; 804 805 private OverScrollGlow mOverScrollGlow; 806 807 // Used to match key downs and key ups 808 private Vector<Integer> mKeysPressed; 809 810 /* package */ static boolean mLogEvent = true; 811 812 // for event log 813 private long mLastTouchUpTime = 0; 814 815 private WebViewCore.AutoFillData mAutoFillData; 816 817 /** 818 * URI scheme for telephone number 819 */ 820 public static final String SCHEME_TEL = "tel:"; 821 /** 822 * URI scheme for email address 823 */ 824 public static final String SCHEME_MAILTO = "mailto:"; 825 /** 826 * URI scheme for map address 827 */ 828 public static final String SCHEME_GEO = "geo:0,0?q="; 829 830 private int mBackgroundColor = Color.WHITE; 831 832 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 833 private int mAutoScrollX = 0; 834 private int mAutoScrollY = 0; 835 private int mMinAutoScrollX = 0; 836 private int mMaxAutoScrollX = 0; 837 private int mMinAutoScrollY = 0; 838 private int mMaxAutoScrollY = 0; 839 private Rect mScrollingLayerBounds = new Rect(); 840 private boolean mSentAutoScrollMessage = false; 841 842 // used for serializing asynchronously handled touch events. 843 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 844 845 // Used to notify listeners of a new picture. 846 private PictureListener mPictureListener; 847 /** 848 * Interface to listen for new pictures as they change. 849 * @deprecated This interface is now obsolete. 850 */ 851 @Deprecated 852 public interface PictureListener { 853 /** 854 * Notify the listener that the picture has changed. 855 * @param view The WebView that owns the picture. 856 * @param picture The new picture. 857 * @deprecated This method is now obsolete. 858 */ 859 @Deprecated 860 public void onNewPicture(WebView view, Picture picture); 861 } 862 863 // FIXME: Want to make this public, but need to change the API file. 864 public /*static*/ class HitTestResult { 865 /** 866 * Default HitTestResult, where the target is unknown 867 */ 868 public static final int UNKNOWN_TYPE = 0; 869 /** 870 * HitTestResult for hitting a HTML::a tag 871 */ 872 public static final int ANCHOR_TYPE = 1; 873 /** 874 * HitTestResult for hitting a phone number 875 */ 876 public static final int PHONE_TYPE = 2; 877 /** 878 * HitTestResult for hitting a map address 879 */ 880 public static final int GEO_TYPE = 3; 881 /** 882 * HitTestResult for hitting an email address 883 */ 884 public static final int EMAIL_TYPE = 4; 885 /** 886 * HitTestResult for hitting an HTML::img tag 887 */ 888 public static final int IMAGE_TYPE = 5; 889 /** 890 * HitTestResult for hitting a HTML::a tag which contains HTML::img 891 */ 892 public static final int IMAGE_ANCHOR_TYPE = 6; 893 /** 894 * HitTestResult for hitting a HTML::a tag with src=http 895 */ 896 public static final int SRC_ANCHOR_TYPE = 7; 897 /** 898 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 899 */ 900 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 901 /** 902 * HitTestResult for hitting an edit text area 903 */ 904 public static final int EDIT_TEXT_TYPE = 9; 905 906 private int mType; 907 private String mExtra; 908 909 HitTestResult() { 910 mType = UNKNOWN_TYPE; 911 } 912 913 private void setType(int type) { 914 mType = type; 915 } 916 917 private void setExtra(String extra) { 918 mExtra = extra; 919 } 920 921 public int getType() { 922 return mType; 923 } 924 925 public String getExtra() { 926 return mExtra; 927 } 928 } 929 930 /** 931 * Construct a new WebView with a Context object. 932 * @param context A Context object used to access application assets. 933 */ 934 public WebView(Context context) { 935 this(context, null); 936 } 937 938 /** 939 * Construct a new WebView with layout parameters. 940 * @param context A Context object used to access application assets. 941 * @param attrs An AttributeSet passed to our parent. 942 */ 943 public WebView(Context context, AttributeSet attrs) { 944 this(context, attrs, com.android.internal.R.attr.webViewStyle); 945 } 946 947 /** 948 * Construct a new WebView with layout parameters and a default style. 949 * @param context A Context object used to access application assets. 950 * @param attrs An AttributeSet passed to our parent. 951 * @param defStyle The default style resource ID. 952 */ 953 public WebView(Context context, AttributeSet attrs, int defStyle) { 954 this(context, attrs, defStyle, false); 955 } 956 957 /** 958 * Construct a new WebView with layout parameters and a default style. 959 * @param context A Context object used to access application assets. 960 * @param attrs An AttributeSet passed to our parent. 961 * @param defStyle The default style resource ID. 962 */ 963 public WebView(Context context, AttributeSet attrs, int defStyle, 964 boolean privateBrowsing) { 965 this(context, attrs, defStyle, null, privateBrowsing); 966 } 967 968 /** 969 * Construct a new WebView with layout parameters, a default style and a set 970 * of custom Javscript interfaces to be added to the WebView at initialization 971 * time. This guarantees that these interfaces will be available when the JS 972 * context is initialized. 973 * @param context A Context object used to access application assets. 974 * @param attrs An AttributeSet passed to our parent. 975 * @param defStyle The default style resource ID. 976 * @param javaScriptInterfaces is a Map of interface names, as keys, and 977 * object implementing those interfaces, as values. 978 * @hide pending API council approval. 979 */ 980 protected WebView(Context context, AttributeSet attrs, int defStyle, 981 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 982 super(context, attrs, defStyle); 983 984 // Used by the chrome stack to find application paths 985 JniUtil.setContext(context); 986 987 mCallbackProxy = new CallbackProxy(context, this); 988 mViewManager = new ViewManager(this); 989 L10nUtils.setApplicationContext(context.getApplicationContext()); 990 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 991 mDatabase = WebViewDatabase.getInstance(context); 992 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 993 mZoomManager = new ZoomManager(this, mCallbackProxy); 994 995 /* The init method must follow the creation of certain member variables, 996 * such as the mZoomManager. 997 */ 998 init(); 999 setupPackageListener(context); 1000 setupProxyListener(context); 1001 updateMultiTouchSupport(context); 1002 1003 if (privateBrowsing) { 1004 startPrivateBrowsing(); 1005 } 1006 1007 mAutoFillData = new WebViewCore.AutoFillData(); 1008 } 1009 1010 private static class ProxyReceiver extends BroadcastReceiver { 1011 @Override 1012 public void onReceive(Context context, Intent intent) { 1013 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1014 handleProxyBroadcast(intent); 1015 } 1016 } 1017 } 1018 1019 /* 1020 * A variable to track if there is a receiver added for PROXY_CHANGE_ACTION 1021 */ 1022 private static boolean sProxyReceiverAdded; 1023 1024 private static synchronized void setupProxyListener(Context context) { 1025 if (sProxyReceiverAdded) { 1026 return; 1027 } 1028 IntentFilter filter = new IntentFilter(); 1029 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1030 Intent currentProxy = context.getApplicationContext().registerReceiver( 1031 new ProxyReceiver(), filter); 1032 sProxyReceiverAdded = true; 1033 if (currentProxy != null) { 1034 handleProxyBroadcast(currentProxy); 1035 } 1036 } 1037 1038 private static void handleProxyBroadcast(Intent intent) { 1039 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1040 if (proxyProperties == null || proxyProperties.getHost() == null) { 1041 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, ""); 1042 return; 1043 } 1044 1045 String host = proxyProperties.getHost(); 1046 int port = proxyProperties.getPort(); 1047 if (port != 0) 1048 host += ":" + port; 1049 1050 // TODO: Handle exclusion list 1051 // The plan is to make an AndroidProxyResolver, and handle the blacklist 1052 // there 1053 String exclusionList = proxyProperties.getExclusionList(); 1054 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, host); 1055 } 1056 1057 /* 1058 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1059 * or ACTION_PACKAGE_REMOVED. 1060 */ 1061 private static boolean sPackageInstallationReceiverAdded = false; 1062 1063 /* 1064 * A set of Google packages we monitor for the 1065 * navigator.isApplicationInstalled() API. Add additional packages as 1066 * needed. 1067 */ 1068 private static Set<String> sGoogleApps; 1069 static { 1070 sGoogleApps = new HashSet<String>(); 1071 sGoogleApps.add("com.google.android.youtube"); 1072 } 1073 1074 private static class PackageListener extends BroadcastReceiver { 1075 @Override 1076 public void onReceive(Context context, Intent intent) { 1077 final String action = intent.getAction(); 1078 final String packageName = intent.getData().getSchemeSpecificPart(); 1079 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1080 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1081 // if it is replacing, refreshPlugins() when adding 1082 return; 1083 } 1084 1085 if (sGoogleApps.contains(packageName)) { 1086 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1087 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1088 } else { 1089 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1090 } 1091 } 1092 1093 PluginManager pm = PluginManager.getInstance(context); 1094 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1095 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1096 } 1097 } 1098 } 1099 1100 private void setupPackageListener(Context context) { 1101 1102 /* 1103 * we must synchronize the instance check and the creation of the 1104 * receiver to ensure that only ONE receiver exists for all WebView 1105 * instances. 1106 */ 1107 synchronized (WebView.class) { 1108 1109 // if the receiver already exists then we do not need to register it 1110 // again 1111 if (sPackageInstallationReceiverAdded) { 1112 return; 1113 } 1114 1115 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1116 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1117 filter.addDataScheme("package"); 1118 BroadcastReceiver packageListener = new PackageListener(); 1119 context.getApplicationContext().registerReceiver(packageListener, filter); 1120 sPackageInstallationReceiverAdded = true; 1121 } 1122 1123 // check if any of the monitored apps are already installed 1124 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1125 1126 @Override 1127 protected Set<String> doInBackground(Void... unused) { 1128 Set<String> installedPackages = new HashSet<String>(); 1129 PackageManager pm = mContext.getPackageManager(); 1130 for (String name : sGoogleApps) { 1131 try { 1132 PackageInfo pInfo = pm.getPackageInfo(name, 1133 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1134 installedPackages.add(name); 1135 } catch(PackageManager.NameNotFoundException e) { 1136 // package not found 1137 } 1138 } 1139 return installedPackages; 1140 } 1141 1142 // Executes on the UI thread 1143 @Override 1144 protected void onPostExecute(Set<String> installedPackages) { 1145 if (mWebViewCore != null) { 1146 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1147 } 1148 } 1149 }; 1150 task.execute(); 1151 } 1152 1153 void updateMultiTouchSupport(Context context) { 1154 mZoomManager.updateMultiTouchSupport(context); 1155 } 1156 1157 private void init() { 1158 setWillNotDraw(false); 1159 setFocusable(true); 1160 setFocusableInTouchMode(true); 1161 setClickable(true); 1162 setLongClickable(true); 1163 1164 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1165 int slop = configuration.getScaledTouchSlop(); 1166 mTouchSlopSquare = slop * slop; 1167 mMinLockSnapReverseDistance = slop; 1168 slop = configuration.getScaledDoubleTapSlop(); 1169 mDoubleTapSlopSquare = slop * slop; 1170 final float density = getContext().getResources().getDisplayMetrics().density; 1171 // use one line height, 16 based on our current default font, for how 1172 // far we allow a touch be away from the edge of a link 1173 mNavSlop = (int) (16 * density); 1174 mZoomManager.init(density); 1175 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1176 1177 // Compute the inverse of the density squared. 1178 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1179 1180 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1181 mOverflingDistance = configuration.getScaledOverflingDistance(); 1182 1183 setScrollBarStyle(super.getScrollBarStyle()); 1184 // Initially use a size of two, since the user is likely to only hold 1185 // down two keys at a time (shift + another key) 1186 mKeysPressed = new Vector<Integer>(2); 1187 } 1188 1189 /** 1190 * Adds accessibility APIs to JavaScript. 1191 * 1192 * Note: This method is responsible to performing the necessary 1193 * check if the accessibility APIs should be exposed. 1194 */ 1195 private void addAccessibilityApisToJavaScript() { 1196 if (AccessibilityManager.getInstance(mContext).isEnabled() 1197 && getSettings().getJavaScriptEnabled()) { 1198 // exposing the TTS for now ... 1199 mTextToSpeech = new TextToSpeech(getContext(), null); 1200 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1201 } 1202 } 1203 1204 /** 1205 * Removes accessibility APIs from JavaScript. 1206 */ 1207 private void removeAccessibilityApisFromJavaScript() { 1208 // exposing the TTS for now ... 1209 if (mTextToSpeech != null) { 1210 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1211 mTextToSpeech.shutdown(); 1212 mTextToSpeech = null; 1213 } 1214 } 1215 1216 @Override 1217 public void setOverScrollMode(int mode) { 1218 super.setOverScrollMode(mode); 1219 if (mode != OVER_SCROLL_NEVER) { 1220 if (mOverScrollGlow == null) { 1221 mOverScrollGlow = new OverScrollGlow(this); 1222 } 1223 } else { 1224 mOverScrollGlow = null; 1225 } 1226 } 1227 1228 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1229 final float density = mContext.getResources().getDisplayMetrics().density 1230 * 100 / zoomDensity; 1231 mNavSlop = (int) (16 * density); 1232 mZoomManager.updateDefaultZoomDensity(density); 1233 } 1234 1235 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1236 String password, final Message resumeMsg) { 1237 boolean rVal = false; 1238 if (resumeMsg == null) { 1239 // null resumeMsg implies saving password silently 1240 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1241 } else { 1242 final Message remember = mPrivateHandler.obtainMessage( 1243 REMEMBER_PASSWORD); 1244 remember.getData().putString("host", schemePlusHost); 1245 remember.getData().putString("username", username); 1246 remember.getData().putString("password", password); 1247 remember.obj = resumeMsg; 1248 1249 final Message neverRemember = mPrivateHandler.obtainMessage( 1250 NEVER_REMEMBER_PASSWORD); 1251 neverRemember.getData().putString("host", schemePlusHost); 1252 neverRemember.getData().putString("username", username); 1253 neverRemember.getData().putString("password", password); 1254 neverRemember.obj = resumeMsg; 1255 1256 new AlertDialog.Builder(getContext()) 1257 .setTitle(com.android.internal.R.string.save_password_label) 1258 .setMessage(com.android.internal.R.string.save_password_message) 1259 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1260 new DialogInterface.OnClickListener() { 1261 public void onClick(DialogInterface dialog, int which) { 1262 resumeMsg.sendToTarget(); 1263 } 1264 }) 1265 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1266 new DialogInterface.OnClickListener() { 1267 public void onClick(DialogInterface dialog, int which) { 1268 remember.sendToTarget(); 1269 } 1270 }) 1271 .setNegativeButton(com.android.internal.R.string.save_password_never, 1272 new DialogInterface.OnClickListener() { 1273 public void onClick(DialogInterface dialog, int which) { 1274 neverRemember.sendToTarget(); 1275 } 1276 }) 1277 .setOnCancelListener(new OnCancelListener() { 1278 public void onCancel(DialogInterface dialog) { 1279 resumeMsg.sendToTarget(); 1280 } 1281 }).show(); 1282 // Return true so that WebViewCore will pause while the dialog is 1283 // up. 1284 rVal = true; 1285 } 1286 return rVal; 1287 } 1288 1289 @Override 1290 public void setScrollBarStyle(int style) { 1291 if (style == View.SCROLLBARS_INSIDE_INSET 1292 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1293 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1294 } else { 1295 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1296 } 1297 super.setScrollBarStyle(style); 1298 } 1299 1300 /** 1301 * Specify whether the horizontal scrollbar has overlay style. 1302 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1303 */ 1304 public void setHorizontalScrollbarOverlay(boolean overlay) { 1305 mOverlayHorizontalScrollbar = overlay; 1306 } 1307 1308 /** 1309 * Specify whether the vertical scrollbar has overlay style. 1310 * @param overlay TRUE if vertical scrollbar should have overlay style. 1311 */ 1312 public void setVerticalScrollbarOverlay(boolean overlay) { 1313 mOverlayVerticalScrollbar = overlay; 1314 } 1315 1316 /** 1317 * Return whether horizontal scrollbar has overlay style 1318 * @return TRUE if horizontal scrollbar has overlay style. 1319 */ 1320 public boolean overlayHorizontalScrollbar() { 1321 return mOverlayHorizontalScrollbar; 1322 } 1323 1324 /** 1325 * Return whether vertical scrollbar has overlay style 1326 * @return TRUE if vertical scrollbar has overlay style. 1327 */ 1328 public boolean overlayVerticalScrollbar() { 1329 return mOverlayVerticalScrollbar; 1330 } 1331 1332 /* 1333 * Return the width of the view where the content of WebView should render 1334 * to. 1335 * Note: this can be called from WebCoreThread. 1336 */ 1337 /* package */ int getViewWidth() { 1338 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1339 return getWidth(); 1340 } else { 1341 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1342 } 1343 } 1344 1345 /** 1346 * returns the height of the titlebarview (if any). Does not care about 1347 * scrolling 1348 * @hide 1349 */ 1350 protected int getTitleHeight() { 1351 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1352 } 1353 1354 /* 1355 * Return the amount of the titlebarview (if any) that is visible 1356 * 1357 * @hide 1358 */ 1359 public int getVisibleTitleHeight() { 1360 // need to restrict mScrollY due to over scroll 1361 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1362 } 1363 1364 /* 1365 * Return the height of the view where the content of WebView should render 1366 * to. Note that this excludes mTitleBar, if there is one. 1367 * Note: this can be called from WebCoreThread. 1368 */ 1369 /* package */ int getViewHeight() { 1370 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1371 } 1372 1373 private int getViewHeightWithTitle() { 1374 int height = getHeight(); 1375 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1376 height -= getHorizontalScrollbarHeight(); 1377 } 1378 return height; 1379 } 1380 1381 /** 1382 * @return The SSL certificate for the main top-level page or null if 1383 * there is no certificate (the site is not secure). 1384 */ 1385 public SslCertificate getCertificate() { 1386 return mCertificate; 1387 } 1388 1389 /** 1390 * Sets the SSL certificate for the main top-level page. 1391 */ 1392 public void setCertificate(SslCertificate certificate) { 1393 if (DebugFlags.WEB_VIEW) { 1394 Log.v(LOGTAG, "setCertificate=" + certificate); 1395 } 1396 // here, the certificate can be null (if the site is not secure) 1397 mCertificate = certificate; 1398 } 1399 1400 //------------------------------------------------------------------------- 1401 // Methods called by activity 1402 //------------------------------------------------------------------------- 1403 1404 /** 1405 * Save the username and password for a particular host in the WebView's 1406 * internal database. 1407 * @param host The host that required the credentials. 1408 * @param username The username for the given host. 1409 * @param password The password for the given host. 1410 */ 1411 public void savePassword(String host, String username, String password) { 1412 mDatabase.setUsernamePassword(host, username, password); 1413 } 1414 1415 /** 1416 * Set the HTTP authentication credentials for a given host and realm. 1417 * 1418 * @param host The host for the credentials. 1419 * @param realm The realm for the credentials. 1420 * @param username The username for the password. If it is null, it means 1421 * password can't be saved. 1422 * @param password The password 1423 */ 1424 public void setHttpAuthUsernamePassword(String host, String realm, 1425 String username, String password) { 1426 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1427 } 1428 1429 /** 1430 * Retrieve the HTTP authentication username and password for a given 1431 * host & realm pair 1432 * 1433 * @param host The host for which the credentials apply. 1434 * @param realm The realm for which the credentials apply. 1435 * @return String[] if found, String[0] is username, which can be null and 1436 * String[1] is password. Return null if it can't find anything. 1437 */ 1438 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1439 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1440 } 1441 1442 /** 1443 * Remove Find or Select ActionModes, if active. 1444 */ 1445 private void clearActionModes() { 1446 if (mSelectCallback != null) { 1447 mSelectCallback.finish(); 1448 } 1449 if (mFindCallback != null) { 1450 mFindCallback.finish(); 1451 } 1452 } 1453 1454 /** 1455 * Called to clear state when moving from one page to another, or changing 1456 * in some other way that makes elements associated with the current page 1457 * (such as WebTextView or ActionModes) no longer relevant. 1458 */ 1459 private void clearHelpers() { 1460 clearTextEntry(); 1461 clearActionModes(); 1462 dismissFullScreenMode(); 1463 } 1464 1465 /** 1466 * Destroy the internal state of the WebView. This method should be called 1467 * after the WebView has been removed from the view system. No other 1468 * methods may be called on a WebView after destroy. 1469 */ 1470 public void destroy() { 1471 clearHelpers(); 1472 if (mListBoxDialog != null) { 1473 mListBoxDialog.dismiss(); 1474 mListBoxDialog = null; 1475 } 1476 if (mNativeClass != 0) nativeStopGL(); 1477 if (mWebViewCore != null) { 1478 // Set the handlers to null before destroying WebViewCore so no 1479 // more messages will be posted. 1480 mCallbackProxy.setWebViewClient(null); 1481 mCallbackProxy.setWebChromeClient(null); 1482 // Tell WebViewCore to destroy itself 1483 synchronized (this) { 1484 WebViewCore webViewCore = mWebViewCore; 1485 mWebViewCore = null; // prevent using partial webViewCore 1486 webViewCore.destroy(); 1487 } 1488 // Remove any pending messages that might not be serviced yet. 1489 mPrivateHandler.removeCallbacksAndMessages(null); 1490 mCallbackProxy.removeCallbacksAndMessages(null); 1491 // Wake up the WebCore thread just in case it is waiting for a 1492 // JavaScript dialog. 1493 synchronized (mCallbackProxy) { 1494 mCallbackProxy.notify(); 1495 } 1496 } 1497 if (mNativeClass != 0) { 1498 nativeDestroy(); 1499 mNativeClass = 0; 1500 } 1501 } 1502 1503 /** 1504 * Enables platform notifications of data state and proxy changes. 1505 * @deprecated Obsolete - platform notifications are always enabled. 1506 */ 1507 @Deprecated 1508 public static void enablePlatformNotifications() { 1509 Network.enablePlatformNotifications(); 1510 } 1511 1512 /** 1513 * If platform notifications are enabled, this should be called 1514 * from the Activity's onPause() or onStop(). 1515 * @deprecated Obsolete - platform notifications are always enabled. 1516 */ 1517 @Deprecated 1518 public static void disablePlatformNotifications() { 1519 Network.disablePlatformNotifications(); 1520 } 1521 1522 /** 1523 * Sets JavaScript engine flags. 1524 * 1525 * @param flags JS engine flags in a String 1526 * 1527 * @hide pending API solidification 1528 */ 1529 public void setJsFlags(String flags) { 1530 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1531 } 1532 1533 /** 1534 * Inform WebView of the network state. This is used to set 1535 * the JavaScript property window.navigator.isOnline and 1536 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1537 * @param networkUp boolean indicating if network is available 1538 */ 1539 public void setNetworkAvailable(boolean networkUp) { 1540 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1541 networkUp ? 1 : 0, 0); 1542 } 1543 1544 /** 1545 * Inform WebView about the current network type. 1546 * {@hide} 1547 */ 1548 public void setNetworkType(String type, String subtype) { 1549 Map<String, String> map = new HashMap<String, String>(); 1550 map.put("type", type); 1551 map.put("subtype", subtype); 1552 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1553 } 1554 /** 1555 * Save the state of this WebView used in 1556 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1557 * method no longer stores the display data for this WebView. The previous 1558 * behavior could potentially leak files if {@link #restoreState} was never 1559 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1560 * and restoring the display data. 1561 * @param outState The Bundle to store the WebView state. 1562 * @return The same copy of the back/forward list used to save the state. If 1563 * saveState fails, the returned list will be null. 1564 * @see #savePicture 1565 * @see #restorePicture 1566 */ 1567 public WebBackForwardList saveState(Bundle outState) { 1568 if (outState == null) { 1569 return null; 1570 } 1571 // We grab a copy of the back/forward list because a client of WebView 1572 // may have invalidated the history list by calling clearHistory. 1573 WebBackForwardList list = copyBackForwardList(); 1574 final int currentIndex = list.getCurrentIndex(); 1575 final int size = list.getSize(); 1576 // We should fail saving the state if the list is empty or the index is 1577 // not in a valid range. 1578 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1579 return null; 1580 } 1581 outState.putInt("index", currentIndex); 1582 // FIXME: This should just be a byte[][] instead of ArrayList but 1583 // Parcel.java does not have the code to handle multi-dimensional 1584 // arrays. 1585 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1586 for (int i = 0; i < size; i++) { 1587 WebHistoryItem item = list.getItemAtIndex(i); 1588 if (null == item) { 1589 // FIXME: this shouldn't happen 1590 // need to determine how item got set to null 1591 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1592 return null; 1593 } 1594 byte[] data = item.getFlattenedData(); 1595 if (data == null) { 1596 // It would be very odd to not have any data for a given history 1597 // item. And we will fail to rebuild the history list without 1598 // flattened data. 1599 return null; 1600 } 1601 history.add(data); 1602 } 1603 outState.putSerializable("history", history); 1604 if (mCertificate != null) { 1605 outState.putBundle("certificate", 1606 SslCertificate.saveState(mCertificate)); 1607 } 1608 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1609 mZoomManager.saveZoomState(outState); 1610 return list; 1611 } 1612 1613 /** 1614 * Save the current display data to the Bundle given. Used in conjunction 1615 * with {@link #saveState}. 1616 * @param b A Bundle to store the display data. 1617 * @param dest The file to store the serialized picture data. Will be 1618 * overwritten with this WebView's picture data. 1619 * @return True if the picture was successfully saved. 1620 * @deprecated This method is now obsolete. 1621 */ 1622 @Deprecated 1623 public boolean savePicture(Bundle b, final File dest) { 1624 if (dest == null || b == null) { 1625 return false; 1626 } 1627 final Picture p = capturePicture(); 1628 // Use a temporary file while writing to ensure the destination file 1629 // contains valid data. 1630 final File temp = new File(dest.getPath() + ".writing"); 1631 new Thread(new Runnable() { 1632 public void run() { 1633 FileOutputStream out = null; 1634 try { 1635 out = new FileOutputStream(temp); 1636 p.writeToStream(out); 1637 // Writing the picture succeeded, rename the temporary file 1638 // to the destination. 1639 temp.renameTo(dest); 1640 } catch (Exception e) { 1641 // too late to do anything about it. 1642 } finally { 1643 if (out != null) { 1644 try { 1645 out.close(); 1646 } catch (Exception e) { 1647 // Can't do anything about that 1648 } 1649 } 1650 temp.delete(); 1651 } 1652 } 1653 }).start(); 1654 // now update the bundle 1655 b.putInt("scrollX", mScrollX); 1656 b.putInt("scrollY", mScrollY); 1657 mZoomManager.saveZoomState(b); 1658 return true; 1659 } 1660 1661 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1662 int sx = b.getInt("scrollX", 0); 1663 int sy = b.getInt("scrollY", 0); 1664 1665 mDrawHistory = true; 1666 mHistoryPicture = p; 1667 mScrollX = sx; 1668 mScrollY = sy; 1669 mZoomManager.restoreZoomState(b); 1670 final float scale = mZoomManager.getScale(); 1671 mHistoryWidth = Math.round(p.getWidth() * scale); 1672 mHistoryHeight = Math.round(p.getHeight() * scale); 1673 1674 invalidate(); 1675 } 1676 1677 /** 1678 * Restore the display data that was save in {@link #savePicture}. Used in 1679 * conjunction with {@link #restoreState}. 1680 * @param b A Bundle containing the saved display data. 1681 * @param src The file where the picture data was stored. 1682 * @return True if the picture was successfully restored. 1683 * @deprecated This method is now obsolete. 1684 */ 1685 @Deprecated 1686 public boolean restorePicture(Bundle b, File src) { 1687 if (src == null || b == null) { 1688 return false; 1689 } 1690 if (!src.exists()) { 1691 return false; 1692 } 1693 try { 1694 final FileInputStream in = new FileInputStream(src); 1695 final Bundle copy = new Bundle(b); 1696 new Thread(new Runnable() { 1697 public void run() { 1698 try { 1699 final Picture p = Picture.createFromStream(in); 1700 if (p != null) { 1701 // Post a runnable on the main thread to update the 1702 // history picture fields. 1703 mPrivateHandler.post(new Runnable() { 1704 public void run() { 1705 restoreHistoryPictureFields(p, copy); 1706 } 1707 }); 1708 } 1709 } finally { 1710 try { 1711 in.close(); 1712 } catch (Exception e) { 1713 // Nothing we can do now. 1714 } 1715 } 1716 } 1717 }).start(); 1718 } catch (FileNotFoundException e){ 1719 e.printStackTrace(); 1720 } 1721 return true; 1722 } 1723 1724 /** 1725 * Restore the state of this WebView from the given map used in 1726 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1727 * be called to restore the state of the WebView before using the object. If 1728 * it is called after the WebView has had a chance to build state (load 1729 * pages, create a back/forward list, etc.) there may be undesirable 1730 * side-effects. Please note that this method no longer restores the 1731 * display data for this WebView. See {@link #savePicture} and {@link 1732 * #restorePicture} for saving and restoring the display data. 1733 * @param inState The incoming Bundle of state. 1734 * @return The restored back/forward list or null if restoreState failed. 1735 * @see #savePicture 1736 * @see #restorePicture 1737 */ 1738 public WebBackForwardList restoreState(Bundle inState) { 1739 WebBackForwardList returnList = null; 1740 if (inState == null) { 1741 return returnList; 1742 } 1743 if (inState.containsKey("index") && inState.containsKey("history")) { 1744 mCertificate = SslCertificate.restoreState( 1745 inState.getBundle("certificate")); 1746 1747 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1748 final int index = inState.getInt("index"); 1749 // We can't use a clone of the list because we need to modify the 1750 // shared copy, so synchronize instead to prevent concurrent 1751 // modifications. 1752 synchronized (list) { 1753 final List<byte[]> history = 1754 (List<byte[]>) inState.getSerializable("history"); 1755 final int size = history.size(); 1756 // Check the index bounds so we don't crash in native code while 1757 // restoring the history index. 1758 if (index < 0 || index >= size) { 1759 return null; 1760 } 1761 for (int i = 0; i < size; i++) { 1762 byte[] data = history.remove(0); 1763 if (data == null) { 1764 // If we somehow have null data, we cannot reconstruct 1765 // the item and thus our history list cannot be rebuilt. 1766 return null; 1767 } 1768 WebHistoryItem item = new WebHistoryItem(data); 1769 list.addHistoryItem(item); 1770 } 1771 // Grab the most recent copy to return to the caller. 1772 returnList = copyBackForwardList(); 1773 // Update the copy to have the correct index. 1774 returnList.setCurrentIndex(index); 1775 } 1776 // Restore private browsing setting. 1777 if (inState.getBoolean("privateBrowsingEnabled")) { 1778 getSettings().setPrivateBrowsingEnabled(true); 1779 } 1780 mZoomManager.restoreZoomState(inState); 1781 // Remove all pending messages because we are restoring previous 1782 // state. 1783 mWebViewCore.removeMessages(); 1784 // Send a restore state message. 1785 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1786 } 1787 return returnList; 1788 } 1789 1790 /** 1791 * Load the given url with the extra headers. 1792 * @param url The url of the resource to load. 1793 * @param extraHeaders The extra headers sent with this url. This should not 1794 * include the common headers like "user-agent". If it does, it 1795 * will be replaced by the intrinsic value of the WebView. 1796 */ 1797 public void loadUrl(String url, Map<String, String> extraHeaders) { 1798 switchOutDrawHistory(); 1799 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1800 arg.mUrl = url; 1801 arg.mExtraHeaders = extraHeaders; 1802 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1803 clearHelpers(); 1804 } 1805 1806 /** 1807 * Load the given url. 1808 * @param url The url of the resource to load. 1809 */ 1810 public void loadUrl(String url) { 1811 if (url == null) { 1812 return; 1813 } 1814 loadUrl(url, null); 1815 } 1816 1817 /** 1818 * Load the url with postData using "POST" method into the WebView. If url 1819 * is not a network url, it will be loaded with {link 1820 * {@link #loadUrl(String)} instead. 1821 * 1822 * @param url The url of the resource to load. 1823 * @param postData The data will be passed to "POST" request. 1824 */ 1825 public void postUrl(String url, byte[] postData) { 1826 if (URLUtil.isNetworkUrl(url)) { 1827 switchOutDrawHistory(); 1828 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1829 arg.mUrl = url; 1830 arg.mPostData = postData; 1831 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1832 clearHelpers(); 1833 } else { 1834 loadUrl(url); 1835 } 1836 } 1837 1838 /** 1839 * Load the given data into the WebView. This will load the data into 1840 * WebView using the data: scheme. Content loaded through this mechanism 1841 * does not have the ability to load content from the network. 1842 * @param data A String of data in the given encoding. The date must 1843 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1844 * %27, %3f respectively. 1845 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1846 * @param encoding The encoding of the data. i.e. utf-8, base64 1847 */ 1848 public void loadData(String data, String mimeType, String encoding) { 1849 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1850 } 1851 1852 /** 1853 * Load the given data into the WebView, use the provided URL as the base 1854 * URL for the content. The base URL is the URL that represents the page 1855 * that is loaded through this interface. As such, it is used to resolve any 1856 * relative URLs. The historyUrl is used for the history entry. 1857 * <p> 1858 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1859 * files through "file:///android_asset/" for the sub resources is more 1860 * restricted. If you provide null or empty string as baseUrl, you won't be 1861 * able to access asset files. If the baseUrl is anything other than 1862 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1863 * sub resources. 1864 * 1865 * @param baseUrl Url to resolve relative paths with, if null defaults to 1866 * "about:blank" 1867 * @param data A String of data in the given encoding. 1868 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1869 * defaults to "text/html" 1870 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1871 * @param historyUrl URL to use as the history entry. Can be null. 1872 */ 1873 public void loadDataWithBaseURL(String baseUrl, String data, 1874 String mimeType, String encoding, String historyUrl) { 1875 1876 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1877 loadData(data, mimeType, encoding); 1878 return; 1879 } 1880 switchOutDrawHistory(); 1881 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1882 arg.mBaseUrl = baseUrl; 1883 arg.mData = data; 1884 arg.mMimeType = mimeType; 1885 arg.mEncoding = encoding; 1886 arg.mHistoryUrl = historyUrl; 1887 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1888 clearHelpers(); 1889 } 1890 1891 /** 1892 * Saves the current view as a web archive. 1893 * 1894 * @param filename The filename where the archive should be placed. 1895 */ 1896 public void saveWebArchive(String filename) { 1897 saveWebArchive(filename, false, null); 1898 } 1899 1900 /* package */ static class SaveWebArchiveMessage { 1901 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1902 mBasename = basename; 1903 mAutoname = autoname; 1904 mCallback = callback; 1905 } 1906 1907 /* package */ final String mBasename; 1908 /* package */ final boolean mAutoname; 1909 /* package */ final ValueCallback<String> mCallback; 1910 /* package */ String mResultFile; 1911 } 1912 1913 /** 1914 * Saves the current view as a web archive. 1915 * 1916 * @param basename The filename where the archive should be placed. 1917 * @param autoname If false, takes basename to be a file. If true, basename 1918 * is assumed to be a directory in which a filename will be 1919 * chosen according to the url of the current page. 1920 * @param callback Called after the web archive has been saved. The 1921 * parameter for onReceiveValue will either be the filename 1922 * under which the file was saved, or null if saving the 1923 * file failed. 1924 */ 1925 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1926 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1927 new SaveWebArchiveMessage(basename, autoname, callback)); 1928 } 1929 1930 /** 1931 * Stop the current load. 1932 */ 1933 public void stopLoading() { 1934 // TODO: should we clear all the messages in the queue before sending 1935 // STOP_LOADING? 1936 switchOutDrawHistory(); 1937 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1938 } 1939 1940 /** 1941 * Reload the current url. 1942 */ 1943 public void reload() { 1944 clearHelpers(); 1945 switchOutDrawHistory(); 1946 mWebViewCore.sendMessage(EventHub.RELOAD); 1947 } 1948 1949 /** 1950 * Return true if this WebView has a back history item. 1951 * @return True iff this WebView has a back history item. 1952 */ 1953 public boolean canGoBack() { 1954 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1955 synchronized (l) { 1956 if (l.getClearPending()) { 1957 return false; 1958 } else { 1959 return l.getCurrentIndex() > 0; 1960 } 1961 } 1962 } 1963 1964 /** 1965 * Go back in the history of this WebView. 1966 */ 1967 public void goBack() { 1968 goBackOrForward(-1); 1969 } 1970 1971 /** 1972 * Return true if this WebView has a forward history item. 1973 * @return True iff this Webview has a forward history item. 1974 */ 1975 public boolean canGoForward() { 1976 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1977 synchronized (l) { 1978 if (l.getClearPending()) { 1979 return false; 1980 } else { 1981 return l.getCurrentIndex() < l.getSize() - 1; 1982 } 1983 } 1984 } 1985 1986 /** 1987 * Go forward in the history of this WebView. 1988 */ 1989 public void goForward() { 1990 goBackOrForward(1); 1991 } 1992 1993 /** 1994 * Return true if the page can go back or forward the given 1995 * number of steps. 1996 * @param steps The negative or positive number of steps to move the 1997 * history. 1998 */ 1999 public boolean canGoBackOrForward(int steps) { 2000 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2001 synchronized (l) { 2002 if (l.getClearPending()) { 2003 return false; 2004 } else { 2005 int newIndex = l.getCurrentIndex() + steps; 2006 return newIndex >= 0 && newIndex < l.getSize(); 2007 } 2008 } 2009 } 2010 2011 /** 2012 * Go to the history item that is the number of steps away from 2013 * the current item. Steps is negative if backward and positive 2014 * if forward. 2015 * @param steps The number of steps to take back or forward in the back 2016 * forward list. 2017 */ 2018 public void goBackOrForward(int steps) { 2019 goBackOrForward(steps, false); 2020 } 2021 2022 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2023 if (steps != 0) { 2024 clearHelpers(); 2025 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2026 ignoreSnapshot ? 1 : 0); 2027 } 2028 } 2029 2030 /** 2031 * Returns true if private browsing is enabled in this WebView. 2032 */ 2033 public boolean isPrivateBrowsingEnabled() { 2034 return getSettings().isPrivateBrowsingEnabled(); 2035 } 2036 2037 private void startPrivateBrowsing() { 2038 getSettings().setPrivateBrowsingEnabled(true); 2039 } 2040 2041 private boolean extendScroll(int y) { 2042 int finalY = mScroller.getFinalY(); 2043 int newY = pinLocY(finalY + y); 2044 if (newY == finalY) return false; 2045 mScroller.setFinalY(newY); 2046 mScroller.extendDuration(computeDuration(0, y)); 2047 return true; 2048 } 2049 2050 /** 2051 * Scroll the contents of the view up by half the view size 2052 * @param top true to jump to the top of the page 2053 * @return true if the page was scrolled 2054 */ 2055 public boolean pageUp(boolean top) { 2056 if (mNativeClass == 0) { 2057 return false; 2058 } 2059 nativeClearCursor(); // start next trackball movement from page edge 2060 if (top) { 2061 // go to the top of the document 2062 return pinScrollTo(mScrollX, 0, true, 0); 2063 } 2064 // Page up 2065 int h = getHeight(); 2066 int y; 2067 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2068 y = -h + PAGE_SCROLL_OVERLAP; 2069 } else { 2070 y = -h / 2; 2071 } 2072 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2073 : extendScroll(y); 2074 } 2075 2076 /** 2077 * Scroll the contents of the view down by half the page size 2078 * @param bottom true to jump to bottom of page 2079 * @return true if the page was scrolled 2080 */ 2081 public boolean pageDown(boolean bottom) { 2082 if (mNativeClass == 0) { 2083 return false; 2084 } 2085 nativeClearCursor(); // start next trackball movement from page edge 2086 if (bottom) { 2087 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2088 } 2089 // Page down. 2090 int h = getHeight(); 2091 int y; 2092 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2093 y = h - PAGE_SCROLL_OVERLAP; 2094 } else { 2095 y = h / 2; 2096 } 2097 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2098 : extendScroll(y); 2099 } 2100 2101 /** 2102 * Clear the view so that onDraw() will draw nothing but white background, 2103 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2104 */ 2105 public void clearView() { 2106 mContentWidth = 0; 2107 mContentHeight = 0; 2108 setBaseLayer(0, null, false); 2109 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2110 } 2111 2112 /** 2113 * Return a new picture that captures the current display of the webview. 2114 * This is a copy of the display, and will be unaffected if the webview 2115 * later loads a different URL. 2116 * 2117 * @return a picture containing the current contents of the view. Note this 2118 * picture is of the entire document, and is not restricted to the 2119 * bounds of the view. 2120 */ 2121 public Picture capturePicture() { 2122 if (mNativeClass == 0) return null; 2123 Picture result = new Picture(); 2124 nativeCopyBaseContentToPicture(result); 2125 return result; 2126 } 2127 2128 /** 2129 * Return true if the browser is displaying a TextView for text input. 2130 */ 2131 private boolean inEditingMode() { 2132 return mWebTextView != null && mWebTextView.getParent() != null; 2133 } 2134 2135 /** 2136 * Remove the WebTextView. 2137 */ 2138 private void clearTextEntry() { 2139 if (inEditingMode()) { 2140 mWebTextView.remove(); 2141 } else { 2142 // The keyboard may be open with the WebView as the served view 2143 hideSoftKeyboard(); 2144 } 2145 } 2146 2147 /** 2148 * Return the current scale of the WebView 2149 * @return The current scale. 2150 */ 2151 public float getScale() { 2152 return mZoomManager.getScale(); 2153 } 2154 2155 /** 2156 * Set the initial scale for the WebView. 0 means default. If 2157 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2158 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2159 * WebView starts will this value as initial scale. 2160 * 2161 * @param scaleInPercent The initial scale in percent. 2162 */ 2163 public void setInitialScale(int scaleInPercent) { 2164 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2165 } 2166 2167 /** 2168 * Invoke the graphical zoom picker widget for this WebView. This will 2169 * result in the zoom widget appearing on the screen to control the zoom 2170 * level of this WebView. 2171 */ 2172 public void invokeZoomPicker() { 2173 if (!getSettings().supportZoom()) { 2174 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2175 return; 2176 } 2177 clearHelpers(); 2178 mZoomManager.invokeZoomPicker(); 2179 } 2180 2181 /** 2182 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2183 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2184 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2185 * anchor does not have a url or if it is a JavaScript url, the type will 2186 * be UNKNOWN_TYPE and the url has to be retrieved through 2187 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2188 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2189 * the "extra" field. A type of 2190 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2191 * a child node. If a phone number is found, the HitTestResult type is set 2192 * to PHONE_TYPE and the phone number is set in the "extra" field of 2193 * HitTestResult. If a map address is found, the HitTestResult type is set 2194 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2195 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2196 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2197 * HitTestResult type is set to UNKNOWN_TYPE. 2198 */ 2199 public HitTestResult getHitTestResult() { 2200 return hitTestResult(mInitialHitTestResult); 2201 } 2202 2203 private HitTestResult hitTestResult(HitTestResult fallback) { 2204 if (mNativeClass == 0) { 2205 return null; 2206 } 2207 2208 HitTestResult result = new HitTestResult(); 2209 if (nativeHasCursorNode()) { 2210 if (nativeCursorIsTextInput()) { 2211 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2212 } else { 2213 String text = nativeCursorText(); 2214 if (text != null) { 2215 if (text.startsWith(SCHEME_TEL)) { 2216 result.setType(HitTestResult.PHONE_TYPE); 2217 result.setExtra(text.substring(SCHEME_TEL.length())); 2218 } else if (text.startsWith(SCHEME_MAILTO)) { 2219 result.setType(HitTestResult.EMAIL_TYPE); 2220 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2221 } else if (text.startsWith(SCHEME_GEO)) { 2222 result.setType(HitTestResult.GEO_TYPE); 2223 result.setExtra(URLDecoder.decode(text 2224 .substring(SCHEME_GEO.length()))); 2225 } else if (nativeCursorIsAnchor()) { 2226 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2227 result.setExtra(text); 2228 } 2229 } 2230 } 2231 } else if (fallback != null) { 2232 /* If webkit causes a rebuild while the long press is in progress, 2233 * the cursor node may be reset, even if it is still around. This 2234 * uses the cursor node saved when the touch began. Since the 2235 * nativeImageURI below only changes the result if it is successful, 2236 * this uses the data beneath the touch if available or the original 2237 * tap data otherwise. 2238 */ 2239 Log.v(LOGTAG, "hitTestResult use fallback"); 2240 result = fallback; 2241 } 2242 int type = result.getType(); 2243 if (type == HitTestResult.UNKNOWN_TYPE 2244 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2245 // Now check to see if it is an image. 2246 int contentX = viewToContentX(mLastTouchX + mScrollX); 2247 int contentY = viewToContentY(mLastTouchY + mScrollY); 2248 String text = nativeImageURI(contentX, contentY); 2249 if (text != null) { 2250 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2251 HitTestResult.IMAGE_TYPE : 2252 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2253 result.setExtra(text); 2254 } 2255 } 2256 return result; 2257 } 2258 2259 // Called by JNI when the DOM has changed the focus. Clear the focus so 2260 // that new keys will go to the newly focused field 2261 private void domChangedFocus() { 2262 if (inEditingMode()) { 2263 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2264 } 2265 } 2266 /** 2267 * Request the anchor or image element URL at the last tapped point. 2268 * If hrefMsg is null, this method returns immediately and does not 2269 * dispatch hrefMsg to its target. If the tapped point hits an image, 2270 * an anchor, or an image in an anchor, the message associates 2271 * strings in named keys in its data. The value paired with the key 2272 * may be an empty string. 2273 * 2274 * @param hrefMsg This message will be dispatched with the result of the 2275 * request. The message data contains three keys: 2276 * - "url" returns the anchor's href attribute. 2277 * - "title" returns the anchor's text. 2278 * - "src" returns the image's src attribute. 2279 */ 2280 public void requestFocusNodeHref(Message hrefMsg) { 2281 if (hrefMsg == null) { 2282 return; 2283 } 2284 int contentX = viewToContentX(mLastTouchX + mScrollX); 2285 int contentY = viewToContentY(mLastTouchY + mScrollY); 2286 if (nativeHasCursorNode()) { 2287 Rect cursorBounds = nativeGetCursorRingBounds(); 2288 if (!cursorBounds.contains(contentX, contentY)) { 2289 int slop = viewToContentDimension(mNavSlop); 2290 cursorBounds.inset(-slop, -slop); 2291 if (cursorBounds.contains(contentX, contentY)) { 2292 contentX = (int) cursorBounds.centerX(); 2293 contentY = (int) cursorBounds.centerY(); 2294 } 2295 } 2296 } 2297 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2298 contentX, contentY, hrefMsg); 2299 } 2300 2301 /** 2302 * Request the url of the image last touched by the user. msg will be sent 2303 * to its target with a String representing the url as its object. 2304 * 2305 * @param msg This message will be dispatched with the result of the request 2306 * as the data member with "url" as key. The result can be null. 2307 */ 2308 public void requestImageRef(Message msg) { 2309 if (0 == mNativeClass) return; // client isn't initialized 2310 int contentX = viewToContentX(mLastTouchX + mScrollX); 2311 int contentY = viewToContentY(mLastTouchY + mScrollY); 2312 String ref = nativeImageURI(contentX, contentY); 2313 Bundle data = msg.getData(); 2314 data.putString("url", ref); 2315 msg.setData(data); 2316 msg.sendToTarget(); 2317 } 2318 2319 static int pinLoc(int x, int viewMax, int docMax) { 2320// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2321 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2322 // pin the short document to the top/left of the screen 2323 x = 0; 2324// Log.d(LOGTAG, "--- center " + x); 2325 } else if (x < 0) { 2326 x = 0; 2327// Log.d(LOGTAG, "--- zero"); 2328 } else if (x + viewMax > docMax) { 2329 x = docMax - viewMax; 2330// Log.d(LOGTAG, "--- pin " + x); 2331 } 2332 return x; 2333 } 2334 2335 // Expects x in view coordinates 2336 int pinLocX(int x) { 2337 if (mInOverScrollMode) return x; 2338 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2339 } 2340 2341 // Expects y in view coordinates 2342 int pinLocY(int y) { 2343 if (mInOverScrollMode) return y; 2344 return pinLoc(y, getViewHeightWithTitle(), 2345 computeRealVerticalScrollRange() + getTitleHeight()); 2346 } 2347 2348 /** 2349 * A title bar which is embedded in this WebView, and scrolls along with it 2350 * vertically, but not horizontally. 2351 */ 2352 private View mTitleBar; 2353 2354 /** 2355 * the title bar rendering gravity 2356 */ 2357 private int mTitleGravity; 2358 2359 /** 2360 * Add or remove a title bar to be embedded into the WebView, and scroll 2361 * along with it vertically, while remaining in view horizontally. Pass 2362 * null to remove the title bar from the WebView, and return to drawing 2363 * the WebView normally without translating to account for the title bar. 2364 * @hide 2365 */ 2366 public void setEmbeddedTitleBar(View v) { 2367 if (mTitleBar == v) return; 2368 if (mTitleBar != null) { 2369 removeView(mTitleBar); 2370 } 2371 if (null != v) { 2372 addView(v, new AbsoluteLayout.LayoutParams( 2373 ViewGroup.LayoutParams.MATCH_PARENT, 2374 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2375 } 2376 mTitleBar = v; 2377 } 2378 2379 /** 2380 * Set where to render the embedded title bar 2381 * NO_GRAVITY at the top of the page 2382 * TOP at the top of the screen 2383 * @hide 2384 */ 2385 public void setTitleBarGravity(int gravity) { 2386 mTitleGravity = gravity; 2387 } 2388 2389 /** 2390 * Given a distance in view space, convert it to content space. Note: this 2391 * does not reflect translation, just scaling, so this should not be called 2392 * with coordinates, but should be called for dimensions like width or 2393 * height. 2394 */ 2395 private int viewToContentDimension(int d) { 2396 return Math.round(d * mZoomManager.getInvScale()); 2397 } 2398 2399 /** 2400 * Given an x coordinate in view space, convert it to content space. Also 2401 * may be used for absolute heights (such as for the WebTextView's 2402 * textSize, which is unaffected by the height of the title bar). 2403 */ 2404 /*package*/ int viewToContentX(int x) { 2405 return viewToContentDimension(x); 2406 } 2407 2408 /** 2409 * Given a y coordinate in view space, convert it to content space. 2410 * Takes into account the height of the title bar if there is one 2411 * embedded into the WebView. 2412 */ 2413 /*package*/ int viewToContentY(int y) { 2414 return viewToContentDimension(y - getTitleHeight()); 2415 } 2416 2417 /** 2418 * Given a x coordinate in view space, convert it to content space. 2419 * Returns the result as a float. 2420 */ 2421 private float viewToContentXf(int x) { 2422 return x * mZoomManager.getInvScale(); 2423 } 2424 2425 /** 2426 * Given a y coordinate in view space, convert it to content space. 2427 * Takes into account the height of the title bar if there is one 2428 * embedded into the WebView. Returns the result as a float. 2429 */ 2430 private float viewToContentYf(int y) { 2431 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2432 } 2433 2434 /** 2435 * Given a distance in content space, convert it to view space. Note: this 2436 * does not reflect translation, just scaling, so this should not be called 2437 * with coordinates, but should be called for dimensions like width or 2438 * height. 2439 */ 2440 /*package*/ int contentToViewDimension(int d) { 2441 return Math.round(d * mZoomManager.getScale()); 2442 } 2443 2444 /** 2445 * Given an x coordinate in content space, convert it to view 2446 * space. 2447 */ 2448 /*package*/ int contentToViewX(int x) { 2449 return contentToViewDimension(x); 2450 } 2451 2452 /** 2453 * Given a y coordinate in content space, convert it to view 2454 * space. Takes into account the height of the title bar. 2455 */ 2456 /*package*/ int contentToViewY(int y) { 2457 return contentToViewDimension(y) + getTitleHeight(); 2458 } 2459 2460 private Rect contentToViewRect(Rect x) { 2461 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2462 contentToViewX(x.right), contentToViewY(x.bottom)); 2463 } 2464 2465 /* To invalidate a rectangle in content coordinates, we need to transform 2466 the rect into view coordinates, so we can then call invalidate(...). 2467 2468 Normally, we would just call contentToView[XY](...), which eventually 2469 calls Math.round(coordinate * mActualScale). However, for invalidates, 2470 we need to account for the slop that occurs with antialiasing. To 2471 address that, we are a little more liberal in the size of the rect that 2472 we invalidate. 2473 2474 This liberal calculation calls floor() for the top/left, and ceil() for 2475 the bottom/right coordinates. This catches the possible extra pixels of 2476 antialiasing that we might have missed with just round(). 2477 */ 2478 2479 // Called by JNI to invalidate the View, given rectangle coordinates in 2480 // content space 2481 private void viewInvalidate(int l, int t, int r, int b) { 2482 final float scale = mZoomManager.getScale(); 2483 final int dy = getTitleHeight(); 2484 invalidate((int)Math.floor(l * scale), 2485 (int)Math.floor(t * scale) + dy, 2486 (int)Math.ceil(r * scale), 2487 (int)Math.ceil(b * scale) + dy); 2488 } 2489 2490 // Called by JNI to invalidate the View after a delay, given rectangle 2491 // coordinates in content space 2492 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2493 final float scale = mZoomManager.getScale(); 2494 final int dy = getTitleHeight(); 2495 postInvalidateDelayed(delay, 2496 (int)Math.floor(l * scale), 2497 (int)Math.floor(t * scale) + dy, 2498 (int)Math.ceil(r * scale), 2499 (int)Math.ceil(b * scale) + dy); 2500 } 2501 2502 private void invalidateContentRect(Rect r) { 2503 viewInvalidate(r.left, r.top, r.right, r.bottom); 2504 } 2505 2506 // stop the scroll animation, and don't let a subsequent fling add 2507 // to the existing velocity 2508 private void abortAnimation() { 2509 mScroller.abortAnimation(); 2510 mLastVelocity = 0; 2511 } 2512 2513 /* call from webcoreview.draw(), so we're still executing in the UI thread 2514 */ 2515 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2516 2517 // premature data from webkit, ignore 2518 if ((w | h) == 0) { 2519 return; 2520 } 2521 2522 // don't abort a scroll animation if we didn't change anything 2523 if (mContentWidth != w || mContentHeight != h) { 2524 // record new dimensions 2525 mContentWidth = w; 2526 mContentHeight = h; 2527 // If history Picture is drawn, don't update scroll. They will be 2528 // updated when we get out of that mode. 2529 if (!mDrawHistory) { 2530 // repin our scroll, taking into account the new content size 2531 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2532 if (!mScroller.isFinished()) { 2533 // We are in the middle of a scroll. Repin the final scroll 2534 // position. 2535 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2536 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2537 } 2538 } 2539 } 2540 contentSizeChanged(updateLayout); 2541 } 2542 2543 // Used to avoid sending many visible rect messages. 2544 private Rect mLastVisibleRectSent; 2545 private Rect mLastGlobalRect; 2546 2547 Rect sendOurVisibleRect() { 2548 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2549 Rect rect = new Rect(); 2550 calcOurContentVisibleRect(rect); 2551 // Rect.equals() checks for null input. 2552 if (!rect.equals(mLastVisibleRectSent)) { 2553 Point pos = new Point(rect.left, rect.top); 2554 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2555 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2556 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, pos); 2557 mLastVisibleRectSent = rect; 2558 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2559 } 2560 Rect globalRect = new Rect(); 2561 if (getGlobalVisibleRect(globalRect) 2562 && !globalRect.equals(mLastGlobalRect)) { 2563 if (DebugFlags.WEB_VIEW) { 2564 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2565 + globalRect.top + ",r=" + globalRect.right + ",b=" 2566 + globalRect.bottom); 2567 } 2568 // TODO: the global offset is only used by windowRect() 2569 // in ChromeClientAndroid ; other clients such as touch 2570 // and mouse events could return view + screen relative points. 2571 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2572 mLastGlobalRect = globalRect; 2573 } 2574 return rect; 2575 } 2576 2577 // Sets r to be the visible rectangle of our webview in view coordinates 2578 private void calcOurVisibleRect(Rect r) { 2579 Point p = new Point(); 2580 getGlobalVisibleRect(r, p); 2581 r.offset(-p.x, -p.y); 2582 } 2583 2584 // Sets r to be our visible rectangle in content coordinates 2585 private void calcOurContentVisibleRect(Rect r) { 2586 calcOurVisibleRect(r); 2587 r.left = viewToContentX(r.left); 2588 // viewToContentY will remove the total height of the title bar. Add 2589 // the visible height back in to account for the fact that if the title 2590 // bar is partially visible, the part of the visible rect which is 2591 // displaying our content is displaced by that amount. 2592 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2593 r.right = viewToContentX(r.right); 2594 r.bottom = viewToContentY(r.bottom); 2595 } 2596 2597 // Sets r to be our visible rectangle in content coordinates. We use this 2598 // method on the native side to compute the position of the fixed layers. 2599 // Uses floating coordinates (necessary to correctly place elements when 2600 // the scale factor is not 1) 2601 private void calcOurContentVisibleRectF(RectF r) { 2602 Rect ri = new Rect(0,0,0,0); 2603 calcOurVisibleRect(ri); 2604 r.left = viewToContentXf(ri.left); 2605 // viewToContentY will remove the total height of the title bar. Add 2606 // the visible height back in to account for the fact that if the title 2607 // bar is partially visible, the part of the visible rect which is 2608 // displaying our content is displaced by that amount. 2609 r.top = viewToContentYf(ri.top + getVisibleTitleHeight()); 2610 r.right = viewToContentXf(ri.right); 2611 r.bottom = viewToContentYf(ri.bottom); 2612 } 2613 2614 static class ViewSizeData { 2615 int mWidth; 2616 int mHeight; 2617 float mHeightWidthRatio; 2618 int mActualViewHeight; 2619 int mTextWrapWidth; 2620 int mAnchorX; 2621 int mAnchorY; 2622 float mScale; 2623 boolean mIgnoreHeight; 2624 } 2625 2626 /** 2627 * Compute unzoomed width and height, and if they differ from the last 2628 * values we sent, send them to webkit (to be used as new viewport) 2629 * 2630 * @param force ensures that the message is sent to webkit even if the width 2631 * or height has not changed since the last message 2632 * 2633 * @return true if new values were sent 2634 */ 2635 boolean sendViewSizeZoom(boolean force) { 2636 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2637 2638 int viewWidth = getViewWidth(); 2639 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2640 // This height could be fixed and be different from actual visible height. 2641 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 2642 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 2643 // Make the ratio more accurate than (newHeight / newWidth), since the 2644 // latter both are calculated and rounded. 2645 float heightWidthRatio = (float) viewHeight / viewWidth; 2646 /* 2647 * Because the native side may have already done a layout before the 2648 * View system was able to measure us, we have to send a height of 0 to 2649 * remove excess whitespace when we grow our width. This will trigger a 2650 * layout and a change in content size. This content size change will 2651 * mean that contentSizeChanged will either call this method directly or 2652 * indirectly from onSizeChanged. 2653 */ 2654 if (newWidth > mLastWidthSent && mWrapContent) { 2655 newHeight = 0; 2656 heightWidthRatio = 0; 2657 } 2658 // Actual visible content height. 2659 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 2660 // Avoid sending another message if the dimensions have not changed. 2661 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 2662 actualViewHeight != mLastActualHeightSent) { 2663 ViewSizeData data = new ViewSizeData(); 2664 data.mWidth = newWidth; 2665 data.mHeight = newHeight; 2666 data.mHeightWidthRatio = heightWidthRatio; 2667 data.mActualViewHeight = actualViewHeight; 2668 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2669 data.mScale = mZoomManager.getScale(); 2670 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2671 && !mHeightCanMeasure; 2672 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2673 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2674 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2675 mLastWidthSent = newWidth; 2676 mLastHeightSent = newHeight; 2677 mLastActualHeightSent = actualViewHeight; 2678 mZoomManager.clearDocumentAnchor(); 2679 return true; 2680 } 2681 return false; 2682 } 2683 2684 private int computeRealHorizontalScrollRange() { 2685 if (mDrawHistory) { 2686 return mHistoryWidth; 2687 } else { 2688 // to avoid rounding error caused unnecessary scrollbar, use floor 2689 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2690 } 2691 } 2692 2693 @Override 2694 protected int computeHorizontalScrollRange() { 2695 int range = computeRealHorizontalScrollRange(); 2696 2697 // Adjust reported range if overscrolled to compress the scroll bars 2698 final int scrollX = mScrollX; 2699 final int overscrollRight = computeMaxScrollX(); 2700 if (scrollX < 0) { 2701 range -= scrollX; 2702 } else if (scrollX > overscrollRight) { 2703 range += scrollX - overscrollRight; 2704 } 2705 2706 return range; 2707 } 2708 2709 @Override 2710 protected int computeHorizontalScrollOffset() { 2711 return Math.max(mScrollX, 0); 2712 } 2713 2714 private int computeRealVerticalScrollRange() { 2715 if (mDrawHistory) { 2716 return mHistoryHeight; 2717 } else { 2718 // to avoid rounding error caused unnecessary scrollbar, use floor 2719 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2720 } 2721 } 2722 2723 @Override 2724 protected int computeVerticalScrollRange() { 2725 int range = computeRealVerticalScrollRange(); 2726 2727 // Adjust reported range if overscrolled to compress the scroll bars 2728 final int scrollY = mScrollY; 2729 final int overscrollBottom = computeMaxScrollY(); 2730 if (scrollY < 0) { 2731 range -= scrollY; 2732 } else if (scrollY > overscrollBottom) { 2733 range += scrollY - overscrollBottom; 2734 } 2735 2736 return range; 2737 } 2738 2739 @Override 2740 protected int computeVerticalScrollOffset() { 2741 return Math.max(mScrollY - getTitleHeight(), 0); 2742 } 2743 2744 @Override 2745 protected int computeVerticalScrollExtent() { 2746 return getViewHeight(); 2747 } 2748 2749 /** @hide */ 2750 @Override 2751 protected void onDrawVerticalScrollBar(Canvas canvas, 2752 Drawable scrollBar, 2753 int l, int t, int r, int b) { 2754 if (mScrollY < 0) { 2755 t -= mScrollY; 2756 } 2757 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2758 scrollBar.draw(canvas); 2759 } 2760 2761 @Override 2762 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 2763 boolean clampedY) { 2764 // Special-case layer scrolling so that we do not trigger normal scroll 2765 // updating. 2766 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 2767 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 2768 mScrollingLayerRect.left = scrollX; 2769 mScrollingLayerRect.top = scrollY; 2770 invalidate(); 2771 return; 2772 } 2773 mInOverScrollMode = false; 2774 int maxX = computeMaxScrollX(); 2775 int maxY = computeMaxScrollY(); 2776 if (maxX == 0) { 2777 // do not over scroll x if the page just fits the screen 2778 scrollX = pinLocX(scrollX); 2779 } else if (scrollX < 0 || scrollX > maxX) { 2780 mInOverScrollMode = true; 2781 } 2782 if (scrollY < 0 || scrollY > maxY) { 2783 mInOverScrollMode = true; 2784 } 2785 2786 int oldX = mScrollX; 2787 int oldY = mScrollY; 2788 2789 super.scrollTo(scrollX, scrollY); 2790 2791 if (mOverScrollGlow != null) { 2792 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 2793 } 2794 } 2795 2796 /** 2797 * Get the url for the current page. This is not always the same as the url 2798 * passed to WebViewClient.onPageStarted because although the load for 2799 * that url has begun, the current page may not have changed. 2800 * @return The url for the current page. 2801 */ 2802 public String getUrl() { 2803 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2804 return h != null ? h.getUrl() : null; 2805 } 2806 2807 /** 2808 * Get the original url for the current page. This is not always the same 2809 * as the url passed to WebViewClient.onPageStarted because although the 2810 * load for that url has begun, the current page may not have changed. 2811 * Also, there may have been redirects resulting in a different url to that 2812 * originally requested. 2813 * @return The url that was originally requested for the current page. 2814 */ 2815 public String getOriginalUrl() { 2816 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2817 return h != null ? h.getOriginalUrl() : null; 2818 } 2819 2820 /** 2821 * Get the title for the current page. This is the title of the current page 2822 * until WebViewClient.onReceivedTitle is called. 2823 * @return The title for the current page. 2824 */ 2825 public String getTitle() { 2826 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2827 return h != null ? h.getTitle() : null; 2828 } 2829 2830 /** 2831 * Get the favicon for the current page. This is the favicon of the current 2832 * page until WebViewClient.onReceivedIcon is called. 2833 * @return The favicon for the current page. 2834 */ 2835 public Bitmap getFavicon() { 2836 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2837 return h != null ? h.getFavicon() : null; 2838 } 2839 2840 /** 2841 * Get the touch icon url for the apple-touch-icon <link> element, or 2842 * a URL on this site's server pointing to the standard location of a 2843 * touch icon. 2844 * @hide 2845 */ 2846 public String getTouchIconUrl() { 2847 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2848 return h != null ? h.getTouchIconUrl() : null; 2849 } 2850 2851 /** 2852 * Get the progress for the current page. 2853 * @return The progress for the current page between 0 and 100. 2854 */ 2855 public int getProgress() { 2856 return mCallbackProxy.getProgress(); 2857 } 2858 2859 /** 2860 * @return the height of the HTML content. 2861 */ 2862 public int getContentHeight() { 2863 return mContentHeight; 2864 } 2865 2866 /** 2867 * @return the width of the HTML content. 2868 * @hide 2869 */ 2870 public int getContentWidth() { 2871 return mContentWidth; 2872 } 2873 2874 /** 2875 * Pause all layout, parsing, and JavaScript timers for all webviews. This 2876 * is a global requests, not restricted to just this webview. This can be 2877 * useful if the application has been paused. 2878 */ 2879 public void pauseTimers() { 2880 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2881 } 2882 2883 /** 2884 * Resume all layout, parsing, and JavaScript timers for all webviews. 2885 * This will resume dispatching all timers. 2886 */ 2887 public void resumeTimers() { 2888 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2889 } 2890 2891 /** 2892 * Call this to pause any extra processing associated with this WebView and 2893 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 2894 * is taken offscreen, this could be called to reduce unnecessary CPU or 2895 * network traffic. When the WebView is again "active", call onResume(). 2896 * 2897 * Note that this differs from pauseTimers(), which affects all WebViews. 2898 */ 2899 public void onPause() { 2900 if (!mIsPaused) { 2901 mIsPaused = true; 2902 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2903 } 2904 } 2905 2906 /** 2907 * Call this to resume a WebView after a previous call to onPause(). 2908 */ 2909 public void onResume() { 2910 if (mIsPaused) { 2911 mIsPaused = false; 2912 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2913 } 2914 } 2915 2916 /** 2917 * Returns true if the view is paused, meaning onPause() was called. Calling 2918 * onResume() sets the paused state back to false. 2919 * @hide 2920 */ 2921 public boolean isPaused() { 2922 return mIsPaused; 2923 } 2924 2925 /** 2926 * Call this to inform the view that memory is low so that it can 2927 * free any available memory. 2928 */ 2929 public void freeMemory() { 2930 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2931 } 2932 2933 /** 2934 * Clear the resource cache. Note that the cache is per-application, so 2935 * this will clear the cache for all WebViews used. 2936 * 2937 * @param includeDiskFiles If false, only the RAM cache is cleared. 2938 */ 2939 public void clearCache(boolean includeDiskFiles) { 2940 // Note: this really needs to be a static method as it clears cache for all 2941 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2942 // we can't make this static. 2943 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2944 includeDiskFiles ? 1 : 0, 0); 2945 } 2946 2947 /** 2948 * Make sure that clearing the form data removes the adapter from the 2949 * currently focused textfield if there is one. 2950 */ 2951 public void clearFormData() { 2952 if (inEditingMode()) { 2953 AutoCompleteAdapter adapter = null; 2954 mWebTextView.setAdapterCustom(adapter); 2955 } 2956 } 2957 2958 /** 2959 * Tell the WebView to clear its internal back/forward list. 2960 */ 2961 public void clearHistory() { 2962 mCallbackProxy.getBackForwardList().setClearPending(); 2963 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2964 } 2965 2966 /** 2967 * Clear the SSL preferences table stored in response to proceeding with SSL 2968 * certificate errors. 2969 */ 2970 public void clearSslPreferences() { 2971 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2972 } 2973 2974 /** 2975 * Return the WebBackForwardList for this WebView. This contains the 2976 * back/forward list for use in querying each item in the history stack. 2977 * This is a copy of the private WebBackForwardList so it contains only a 2978 * snapshot of the current state. Multiple calls to this method may return 2979 * different objects. The object returned from this method will not be 2980 * updated to reflect any new state. 2981 */ 2982 public WebBackForwardList copyBackForwardList() { 2983 return mCallbackProxy.getBackForwardList().clone(); 2984 } 2985 2986 /* 2987 * Highlight and scroll to the next occurance of String in findAll. 2988 * Wraps the page infinitely, and scrolls. Must be called after 2989 * calling findAll. 2990 * 2991 * @param forward Direction to search. 2992 */ 2993 public void findNext(boolean forward) { 2994 if (0 == mNativeClass) return; // client isn't initialized 2995 nativeFindNext(forward); 2996 } 2997 2998 /* 2999 * Find all instances of find on the page and highlight them. 3000 * @param find String to find. 3001 * @return int The number of occurances of the String "find" 3002 * that were found. 3003 */ 3004 public int findAll(String find) { 3005 if (0 == mNativeClass) return 0; // client isn't initialized 3006 int result = find != null ? nativeFindAll(find.toLowerCase(), 3007 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3008 invalidate(); 3009 mLastFind = find; 3010 return result; 3011 } 3012 3013 /** 3014 * Start an ActionMode for finding text in this WebView. Only works if this 3015 * WebView is attached to the view system. 3016 * @param text If non-null, will be the initial text to search for. 3017 * Otherwise, the last String searched for in this WebView will 3018 * be used to start. 3019 * @param showIme If true, show the IME, assuming the user will begin typing. 3020 * If false and text is non-null, perform a find all. 3021 * @return boolean True if the find dialog is shown, false otherwise. 3022 */ 3023 public boolean showFindDialog(String text, boolean showIme) { 3024 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3025 if (getParent() == null || startActionMode(callback) == null) { 3026 // Could not start the action mode, so end Find on page 3027 return false; 3028 } 3029 mFindCallback = callback; 3030 setFindIsUp(true); 3031 mFindCallback.setWebView(this); 3032 if (showIme) { 3033 mFindCallback.showSoftInput(); 3034 } else if (text != null) { 3035 mFindCallback.setText(text); 3036 mFindCallback.findAll(); 3037 return true; 3038 } 3039 if (text == null) { 3040 text = mLastFind; 3041 } 3042 if (text != null) { 3043 mFindCallback.setText(text); 3044 } 3045 return true; 3046 } 3047 3048 /** 3049 * Keep track of the find callback so that we can remove its titlebar if 3050 * necessary. 3051 */ 3052 private FindActionModeCallback mFindCallback; 3053 3054 /** 3055 * Toggle whether the find dialog is showing, for both native and Java. 3056 */ 3057 private void setFindIsUp(boolean isUp) { 3058 mFindIsUp = isUp; 3059 if (0 == mNativeClass) return; // client isn't initialized 3060 nativeSetFindIsUp(isUp); 3061 } 3062 3063 /** 3064 * Return the index of the currently highlighted match. 3065 */ 3066 int findIndex() { 3067 if (0 == mNativeClass) return -1; 3068 return nativeFindIndex(); 3069 } 3070 3071 // Used to know whether the find dialog is open. Affects whether 3072 // or not we draw the highlights for matches. 3073 private boolean mFindIsUp; 3074 3075 // Keep track of the last string sent, so we can search again when find is 3076 // reopened. 3077 private String mLastFind; 3078 3079 /** 3080 * Return the first substring consisting of the address of a physical 3081 * location. Currently, only addresses in the United States are detected, 3082 * and consist of: 3083 * - a house number 3084 * - a street name 3085 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3086 * - a city name 3087 * - a state or territory, either spelled out or two-letter abbr. 3088 * - an optional 5 digit or 9 digit zip code. 3089 * 3090 * All names must be correctly capitalized, and the zip code, if present, 3091 * must be valid for the state. The street type must be a standard USPS 3092 * spelling or abbreviation. The state or territory must also be spelled 3093 * or abbreviated using USPS standards. The house number may not exceed 3094 * five digits. 3095 * @param addr The string to search for addresses. 3096 * 3097 * @return the address, or if no address is found, return null. 3098 */ 3099 public static String findAddress(String addr) { 3100 return findAddress(addr, false); 3101 } 3102 3103 /** 3104 * @hide 3105 * Return the first substring consisting of the address of a physical 3106 * location. Currently, only addresses in the United States are detected, 3107 * and consist of: 3108 * - a house number 3109 * - a street name 3110 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3111 * - a city name 3112 * - a state or territory, either spelled out or two-letter abbr. 3113 * - an optional 5 digit or 9 digit zip code. 3114 * 3115 * Names are optionally capitalized, and the zip code, if present, 3116 * must be valid for the state. The street type must be a standard USPS 3117 * spelling or abbreviation. The state or territory must also be spelled 3118 * or abbreviated using USPS standards. The house number may not exceed 3119 * five digits. 3120 * @param addr The string to search for addresses. 3121 * @param caseInsensitive addr Set to true to make search ignore case. 3122 * 3123 * @return the address, or if no address is found, return null. 3124 */ 3125 public static String findAddress(String addr, boolean caseInsensitive) { 3126 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3127 } 3128 3129 /* 3130 * Clear the highlighting surrounding text matches created by findAll. 3131 */ 3132 public void clearMatches() { 3133 if (mNativeClass == 0) 3134 return; 3135 nativeSetFindIsEmpty(); 3136 invalidate(); 3137 } 3138 3139 /** 3140 * Called when the find ActionMode ends. 3141 */ 3142 void notifyFindDialogDismissed() { 3143 mFindCallback = null; 3144 if (mWebViewCore == null) { 3145 return; 3146 } 3147 clearMatches(); 3148 setFindIsUp(false); 3149 // Now that the dialog has been removed, ensure that we scroll to a 3150 // location that is not beyond the end of the page. 3151 pinScrollTo(mScrollX, mScrollY, false, 0); 3152 invalidate(); 3153 } 3154 3155 /** 3156 * Query the document to see if it contains any image references. The 3157 * message object will be dispatched with arg1 being set to 1 if images 3158 * were found and 0 if the document does not reference any images. 3159 * @param response The message that will be dispatched with the result. 3160 */ 3161 public void documentHasImages(Message response) { 3162 if (response == null) { 3163 return; 3164 } 3165 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3166 } 3167 3168 /** 3169 * Request the scroller to abort any ongoing animation 3170 * 3171 * @hide 3172 */ 3173 public void stopScroll() { 3174 mScroller.forceFinished(true); 3175 mLastVelocity = 0; 3176 } 3177 3178 @Override 3179 public void computeScroll() { 3180 if (mScroller.computeScrollOffset()) { 3181 int oldX = mScrollX; 3182 int oldY = mScrollY; 3183 int x = mScroller.getCurrX(); 3184 int y = mScroller.getCurrY(); 3185 invalidate(); // So we draw again 3186 3187 if (!mScroller.isFinished()) { 3188 int rangeX = computeMaxScrollX(); 3189 int rangeY = computeMaxScrollY(); 3190 int overflingDistance = mOverflingDistance; 3191 3192 // Use the layer's scroll data if needed. 3193 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3194 oldX = mScrollingLayerRect.left; 3195 oldY = mScrollingLayerRect.top; 3196 rangeX = mScrollingLayerRect.right; 3197 rangeY = mScrollingLayerRect.bottom; 3198 // No overscrolling for layers. 3199 overflingDistance = 0; 3200 } 3201 3202 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3203 rangeX, rangeY, 3204 overflingDistance, overflingDistance, false); 3205 3206 if (mOverScrollGlow != null) { 3207 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3208 } 3209 } else { 3210 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3211 mScrollX = x; 3212 mScrollY = y; 3213 } else { 3214 // Update the layer position instead of WebView. 3215 nativeScrollLayer(mScrollingLayer, x, y); 3216 mScrollingLayerRect.left = x; 3217 mScrollingLayerRect.top = y; 3218 } 3219 abortAnimation(); 3220 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3221 WebViewCore.resumePriority(); 3222 if (!mSelectingText) { 3223 WebViewCore.resumeUpdatePicture(mWebViewCore); 3224 } 3225 if (oldX != mScrollX || oldY != mScrollY) { 3226 sendOurVisibleRect(); 3227 } 3228 } 3229 } else { 3230 super.computeScroll(); 3231 } 3232 } 3233 3234 private static int computeDuration(int dx, int dy) { 3235 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3236 int duration = distance * 1000 / STD_SPEED; 3237 return Math.min(duration, MAX_DURATION); 3238 } 3239 3240 // helper to pin the scrollBy parameters (already in view coordinates) 3241 // returns true if the scroll was changed 3242 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3243 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3244 } 3245 // helper to pin the scrollTo parameters (already in view coordinates) 3246 // returns true if the scroll was changed 3247 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3248 x = pinLocX(x); 3249 y = pinLocY(y); 3250 int dx = x - mScrollX; 3251 int dy = y - mScrollY; 3252 3253 if ((dx | dy) == 0) { 3254 return false; 3255 } 3256 abortAnimation(); 3257 if (animate) { 3258 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3259 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3260 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3261 awakenScrollBars(mScroller.getDuration()); 3262 invalidate(); 3263 } else { 3264 scrollTo(x, y); 3265 } 3266 return true; 3267 } 3268 3269 // Scale from content to view coordinates, and pin. 3270 // Also called by jni webview.cpp 3271 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3272 if (mDrawHistory) { 3273 // disallow WebView to change the scroll position as History Picture 3274 // is used in the view system. 3275 // TODO: as we switchOutDrawHistory when trackball or navigation 3276 // keys are hit, this should be safe. Right? 3277 return false; 3278 } 3279 cx = contentToViewDimension(cx); 3280 cy = contentToViewDimension(cy); 3281 if (mHeightCanMeasure) { 3282 // move our visible rect according to scroll request 3283 if (cy != 0) { 3284 Rect tempRect = new Rect(); 3285 calcOurVisibleRect(tempRect); 3286 tempRect.offset(cx, cy); 3287 requestRectangleOnScreen(tempRect); 3288 } 3289 // FIXME: We scroll horizontally no matter what because currently 3290 // ScrollView and ListView will not scroll horizontally. 3291 // FIXME: Why do we only scroll horizontally if there is no 3292 // vertical scroll? 3293// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3294 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3295 } else { 3296 return pinScrollBy(cx, cy, animate, 0); 3297 } 3298 } 3299 3300 /** 3301 * Called by CallbackProxy when the page starts loading. 3302 * @param url The URL of the page which has started loading. 3303 */ 3304 /* package */ void onPageStarted(String url) { 3305 // every time we start a new page, we want to reset the 3306 // WebView certificate: if the new site is secure, we 3307 // will reload it and get a new certificate set; 3308 // if the new site is not secure, the certificate must be 3309 // null, and that will be the case 3310 setCertificate(null); 3311 3312 // reset the flag since we set to true in if need after 3313 // loading is see onPageFinished(Url) 3314 mAccessibilityScriptInjected = false; 3315 } 3316 3317 /** 3318 * Called by CallbackProxy when the page finishes loading. 3319 * @param url The URL of the page which has finished loading. 3320 */ 3321 /* package */ void onPageFinished(String url) { 3322 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3323 // If the user is now on a different page, or has scrolled the page 3324 // past the point where the title bar is offscreen, ignore the 3325 // scroll request. 3326 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3327 && mScrollX == 0 && mScrollY == 0) { 3328 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3329 SLIDE_TITLE_DURATION); 3330 } 3331 mPageThatNeedsToSlideTitleBarOffScreen = null; 3332 } 3333 mZoomManager.onPageFinished(url); 3334 injectAccessibilityForUrl(url); 3335 } 3336 3337 /** 3338 * This method injects accessibility in the loaded document if accessibility 3339 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3340 * If no URL specific script is found or JavaScript is disabled we fallback to 3341 * the default {@link AccessibilityInjector} implementation. 3342 * </p> 3343 * If the URL has the "axs" paramter set to 1 it has already done the 3344 * script injection so we do nothing. If the parameter is set to 0 3345 * the URL opts out accessibility script injection so we fall back to 3346 * the default {@link AccessibilityInjector}. 3347 * </p> 3348 * Note: If the user has not opted-in the accessibility script injection no scripts 3349 * are injected rather the default {@link AccessibilityInjector} implementation 3350 * is used. 3351 * 3352 * @param url The URL loaded by this {@link WebView}. 3353 */ 3354 private void injectAccessibilityForUrl(String url) { 3355 if (mWebViewCore == null) { 3356 return; 3357 } 3358 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3359 3360 if (!accessibilityManager.isEnabled()) { 3361 // it is possible that accessibility was turned off between reloads 3362 ensureAccessibilityScriptInjectorInstance(false); 3363 return; 3364 } 3365 3366 if (!getSettings().getJavaScriptEnabled()) { 3367 // no JS so we fallback to the basic buil-in support 3368 ensureAccessibilityScriptInjectorInstance(true); 3369 return; 3370 } 3371 3372 // check the URL "axs" parameter to choose appropriate action 3373 int axsParameterValue = getAxsUrlParameterValue(url); 3374 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3375 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3376 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3377 if (onDeviceScriptInjectionEnabled) { 3378 ensureAccessibilityScriptInjectorInstance(false); 3379 // neither script injected nor script injection opted out => we inject 3380 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3381 // TODO: Set this flag after successfull script injection. Maybe upon injection 3382 // the chooser should update the meta tag and we check it to declare success 3383 mAccessibilityScriptInjected = true; 3384 } else { 3385 // injection disabled so we fallback to the basic built-in support 3386 ensureAccessibilityScriptInjectorInstance(true); 3387 } 3388 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3389 // injection opted out so we fallback to the basic buil-in support 3390 ensureAccessibilityScriptInjectorInstance(true); 3391 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3392 ensureAccessibilityScriptInjectorInstance(false); 3393 // the URL provides accessibility but we still need to add our generic script 3394 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3395 } else { 3396 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3397 } 3398 } 3399 3400 /** 3401 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3402 * 3403 * @param present True to ensure an insance, false to ensure no instance. 3404 */ 3405 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3406 if (present) { 3407 if (mAccessibilityInjector == null) { 3408 mAccessibilityInjector = new AccessibilityInjector(this); 3409 } 3410 } else { 3411 mAccessibilityInjector = null; 3412 } 3413 } 3414 3415 /** 3416 * Gets the "axs" URL parameter value. 3417 * 3418 * @param url A url to fetch the paramter from. 3419 * @return The parameter value if such, -1 otherwise. 3420 */ 3421 private int getAxsUrlParameterValue(String url) { 3422 if (mMatchAxsUrlParameterPattern == null) { 3423 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3424 } 3425 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3426 if (matcher.find()) { 3427 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3428 return Integer.parseInt(keyValuePair.split("=")[1]); 3429 } 3430 return -1; 3431 } 3432 3433 /** 3434 * The URL of a page that sent a message to scroll the title bar off screen. 3435 * 3436 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3437 * title bar off the screen. Sometimes, the scroll position is set before 3438 * the page finishes loading. Rather than scrolling while the page is still 3439 * loading, keep track of the URL and new scroll position so we can perform 3440 * the scroll once the page finishes loading. 3441 */ 3442 private String mPageThatNeedsToSlideTitleBarOffScreen; 3443 3444 /** 3445 * The destination Y scroll position to be used when the page finishes 3446 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3447 */ 3448 private int mYDistanceToSlideTitleOffScreen; 3449 3450 // scale from content to view coordinates, and pin 3451 // return true if pin caused the final x/y different than the request cx/cy, 3452 // and a future scroll may reach the request cx/cy after our size has 3453 // changed 3454 // return false if the view scroll to the exact position as it is requested, 3455 // where negative numbers are taken to mean 0 3456 private boolean setContentScrollTo(int cx, int cy) { 3457 if (mDrawHistory) { 3458 // disallow WebView to change the scroll position as History Picture 3459 // is used in the view system. 3460 // One known case where this is called is that WebCore tries to 3461 // restore the scroll position. As history Picture already uses the 3462 // saved scroll position, it is ok to skip this. 3463 return false; 3464 } 3465 int vx; 3466 int vy; 3467 if ((cx | cy) == 0) { 3468 // If the page is being scrolled to (0,0), do not add in the title 3469 // bar's height, and simply scroll to (0,0). (The only other work 3470 // in contentToView_ is to multiply, so this would not change 0.) 3471 vx = 0; 3472 vy = 0; 3473 } else { 3474 vx = contentToViewX(cx); 3475 vy = contentToViewY(cy); 3476 } 3477// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3478// vx + " " + vy + "]"); 3479 // Some mobile sites attempt to scroll the title bar off the page by 3480 // scrolling to (0,1). If we are at the top left corner of the 3481 // page, assume this is an attempt to scroll off the title bar, and 3482 // animate the title bar off screen slowly enough that the user can see 3483 // it. 3484 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3485 && mTitleBar != null) { 3486 // FIXME: 100 should be defined somewhere as our max progress. 3487 if (getProgress() < 100) { 3488 // Wait to scroll the title bar off screen until the page has 3489 // finished loading. Keep track of the URL and the destination 3490 // Y position 3491 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3492 mYDistanceToSlideTitleOffScreen = vy; 3493 } else { 3494 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3495 } 3496 // Since we are animating, we have not yet reached the desired 3497 // scroll position. Do not return true to request another attempt 3498 return false; 3499 } 3500 pinScrollTo(vx, vy, false, 0); 3501 // If the request was to scroll to a negative coordinate, treat it as if 3502 // it was a request to scroll to 0 3503 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3504 return true; 3505 } else { 3506 return false; 3507 } 3508 } 3509 3510 // scale from content to view coordinates, and pin 3511 private void spawnContentScrollTo(int cx, int cy) { 3512 if (mDrawHistory) { 3513 // disallow WebView to change the scroll position as History Picture 3514 // is used in the view system. 3515 return; 3516 } 3517 int vx = contentToViewX(cx); 3518 int vy = contentToViewY(cy); 3519 pinScrollTo(vx, vy, true, 0); 3520 } 3521 3522 /** 3523 * These are from webkit, and are in content coordinate system (unzoomed) 3524 */ 3525 private void contentSizeChanged(boolean updateLayout) { 3526 // suppress 0,0 since we usually see real dimensions soon after 3527 // this avoids drawing the prev content in a funny place. If we find a 3528 // way to consolidate these notifications, this check may become 3529 // obsolete 3530 if ((mContentWidth | mContentHeight) == 0) { 3531 return; 3532 } 3533 3534 if (mHeightCanMeasure) { 3535 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3536 || updateLayout) { 3537 requestLayout(); 3538 } 3539 } else if (mWidthCanMeasure) { 3540 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3541 || updateLayout) { 3542 requestLayout(); 3543 } 3544 } else { 3545 // If we don't request a layout, try to send our view size to the 3546 // native side to ensure that WebCore has the correct dimensions. 3547 sendViewSizeZoom(false); 3548 } 3549 } 3550 3551 /** 3552 * Set the WebViewClient that will receive various notifications and 3553 * requests. This will replace the current handler. 3554 * @param client An implementation of WebViewClient. 3555 */ 3556 public void setWebViewClient(WebViewClient client) { 3557 mCallbackProxy.setWebViewClient(client); 3558 } 3559 3560 /** 3561 * Gets the WebViewClient 3562 * @return the current WebViewClient instance. 3563 * 3564 *@hide pending API council approval. 3565 */ 3566 public WebViewClient getWebViewClient() { 3567 return mCallbackProxy.getWebViewClient(); 3568 } 3569 3570 /** 3571 * Register the interface to be used when content can not be handled by 3572 * the rendering engine, and should be downloaded instead. This will replace 3573 * the current handler. 3574 * @param listener An implementation of DownloadListener. 3575 */ 3576 public void setDownloadListener(DownloadListener listener) { 3577 mCallbackProxy.setDownloadListener(listener); 3578 } 3579 3580 /** 3581 * Set the chrome handler. This is an implementation of WebChromeClient for 3582 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3583 * This will replace the current handler. 3584 * @param client An implementation of WebChromeClient. 3585 */ 3586 public void setWebChromeClient(WebChromeClient client) { 3587 mCallbackProxy.setWebChromeClient(client); 3588 } 3589 3590 /** 3591 * Gets the chrome handler. 3592 * @return the current WebChromeClient instance. 3593 * 3594 * @hide API council approval. 3595 */ 3596 public WebChromeClient getWebChromeClient() { 3597 return mCallbackProxy.getWebChromeClient(); 3598 } 3599 3600 /** 3601 * Set the back/forward list client. This is an implementation of 3602 * WebBackForwardListClient for handling new items and changes in the 3603 * history index. 3604 * @param client An implementation of WebBackForwardListClient. 3605 * {@hide} 3606 */ 3607 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3608 mCallbackProxy.setWebBackForwardListClient(client); 3609 } 3610 3611 /** 3612 * Gets the WebBackForwardListClient. 3613 * {@hide} 3614 */ 3615 public WebBackForwardListClient getWebBackForwardListClient() { 3616 return mCallbackProxy.getWebBackForwardListClient(); 3617 } 3618 3619 /** 3620 * Set the Picture listener. This is an interface used to receive 3621 * notifications of a new Picture. 3622 * @param listener An implementation of WebView.PictureListener. 3623 * @deprecated This method is now obsolete. 3624 */ 3625 @Deprecated 3626 public void setPictureListener(PictureListener listener) { 3627 mPictureListener = listener; 3628 } 3629 3630 /** 3631 * {@hide} 3632 */ 3633 /* FIXME: Debug only! Remove for SDK! */ 3634 public void externalRepresentation(Message callback) { 3635 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3636 } 3637 3638 /** 3639 * {@hide} 3640 */ 3641 /* FIXME: Debug only! Remove for SDK! */ 3642 public void documentAsText(Message callback) { 3643 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3644 } 3645 3646 /** 3647 * Use this function to bind an object to JavaScript so that the 3648 * methods can be accessed from JavaScript. 3649 * <p><strong>IMPORTANT:</strong> 3650 * <ul> 3651 * <li> Using addJavascriptInterface() allows JavaScript to control your 3652 * application. This can be a very useful feature or a dangerous security 3653 * issue. When the HTML in the WebView is untrustworthy (for example, part 3654 * or all of the HTML is provided by some person or process), then an 3655 * attacker could inject HTML that will execute your code and possibly any 3656 * code of the attacker's choosing.<br> 3657 * Do not use addJavascriptInterface() unless all of the HTML in this 3658 * WebView was written by you.</li> 3659 * <li> The Java object that is bound runs in another thread and not in 3660 * the thread that it was constructed in.</li> 3661 * </ul></p> 3662 * @param obj The class instance to bind to JavaScript, null instances are 3663 * ignored. 3664 * @param interfaceName The name to used to expose the instance in 3665 * JavaScript. 3666 */ 3667 public void addJavascriptInterface(Object obj, String interfaceName) { 3668 if (obj == null) { 3669 return; 3670 } 3671 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3672 arg.mObject = obj; 3673 arg.mInterfaceName = interfaceName; 3674 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3675 } 3676 3677 /** 3678 * Removes a previously added JavaScript interface with the given name. 3679 * @param interfaceName The name of the interface to remove. 3680 */ 3681 public void removeJavascriptInterface(String interfaceName) { 3682 if (mWebViewCore != null) { 3683 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3684 arg.mInterfaceName = interfaceName; 3685 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 3686 } 3687 } 3688 3689 /** 3690 * Return the WebSettings object used to control the settings for this 3691 * WebView. 3692 * @return A WebSettings object that can be used to control this WebView's 3693 * settings. 3694 */ 3695 public WebSettings getSettings() { 3696 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3697 } 3698 3699 /** 3700 * Return the list of currently loaded plugins. 3701 * @return The list of currently loaded plugins. 3702 * 3703 * @hide 3704 * @deprecated This was used for Gears, which has been deprecated. 3705 */ 3706 @Deprecated 3707 public static synchronized PluginList getPluginList() { 3708 return new PluginList(); 3709 } 3710 3711 /** 3712 * @hide 3713 * @deprecated This was used for Gears, which has been deprecated. 3714 */ 3715 @Deprecated 3716 public void refreshPlugins(boolean reloadOpenPages) { } 3717 3718 //------------------------------------------------------------------------- 3719 // Override View methods 3720 //------------------------------------------------------------------------- 3721 3722 @Override 3723 protected void finalize() throws Throwable { 3724 try { 3725 destroy(); 3726 } finally { 3727 super.finalize(); 3728 } 3729 } 3730 3731 @Override 3732 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3733 if (child == mTitleBar) { 3734 // When drawing the title bar, move it horizontally to always show 3735 // at the top of the WebView. 3736 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3737 int newTop = 0; 3738 if (mTitleGravity == Gravity.NO_GRAVITY) { 3739 newTop = Math.min(0, mScrollY); 3740 } else if (mTitleGravity == Gravity.TOP) { 3741 newTop = mScrollY; 3742 } 3743 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 3744 mTitleBar.setTop(newTop); 3745 } 3746 return super.drawChild(canvas, child, drawingTime); 3747 } 3748 3749 private void drawContent(Canvas canvas) { 3750 // Update the buttons in the picture, so when we draw the picture 3751 // to the screen, they are in the correct state. 3752 // Tell the native side if user is a) touching the screen, 3753 // b) pressing the trackball down, or c) pressing the enter key 3754 // If the cursor is on a button, we need to draw it in the pressed 3755 // state. 3756 // If mNativeClass is 0, we should not reach here, so we do not 3757 // need to check it again. 3758 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3759 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3760 || mTrackballDown || mGotCenterDown, false); 3761 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3762 } 3763 3764 /** 3765 * Draw the background when beyond bounds 3766 * @param canvas Canvas to draw into 3767 */ 3768 private void drawOverScrollBackground(Canvas canvas) { 3769 if (mOverScrollBackground == null) { 3770 mOverScrollBackground = new Paint(); 3771 Bitmap bm = BitmapFactory.decodeResource( 3772 mContext.getResources(), 3773 com.android.internal.R.drawable.status_bar_background); 3774 mOverScrollBackground.setShader(new BitmapShader(bm, 3775 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3776 mOverScrollBorder = new Paint(); 3777 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3778 mOverScrollBorder.setStrokeWidth(0); 3779 mOverScrollBorder.setColor(0xffbbbbbb); 3780 } 3781 3782 int top = 0; 3783 int right = computeRealHorizontalScrollRange(); 3784 int bottom = top + computeRealVerticalScrollRange(); 3785 // first draw the background and anchor to the top of the view 3786 canvas.save(); 3787 canvas.translate(mScrollX, mScrollY); 3788 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3789 - mScrollY, Region.Op.DIFFERENCE); 3790 canvas.drawPaint(mOverScrollBackground); 3791 canvas.restore(); 3792 // then draw the border 3793 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3794 // next clip the region for the content 3795 canvas.clipRect(0, top, right, bottom); 3796 } 3797 3798 @Override 3799 protected void onDraw(Canvas canvas) { 3800 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3801 if (mNativeClass == 0) { 3802 return; 3803 } 3804 3805 // if both mContentWidth and mContentHeight are 0, it means there is no 3806 // valid Picture passed to WebView yet. This can happen when WebView 3807 // just starts. Draw the background and return. 3808 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3809 canvas.drawColor(mBackgroundColor); 3810 return; 3811 } 3812 3813 if (canvas.isHardwareAccelerated()) { 3814 mZoomManager.setHardwareAccelerated(); 3815 } 3816 3817 int saveCount = canvas.save(); 3818 if (mInOverScrollMode && !getSettings() 3819 .getUseWebViewBackgroundForOverscrollBackground()) { 3820 drawOverScrollBackground(canvas); 3821 } 3822 if (mTitleBar != null) { 3823 canvas.translate(0, getTitleHeight()); 3824 } 3825 drawContent(canvas); 3826 canvas.restoreToCount(saveCount); 3827 3828 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3829 invalidate(); 3830 } 3831 if (inEditingMode()) { 3832 mWebTextView.onDrawSubstitute(); 3833 } 3834 mWebViewCore.signalRepaintDone(); 3835 3836 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 3837 invalidate(); 3838 } 3839 3840 // paint the highlight in the end 3841 if (!mTouchHighlightRegion.isEmpty()) { 3842 if (mTouchHightlightPaint == null) { 3843 mTouchHightlightPaint = new Paint(); 3844 mTouchHightlightPaint.setColor(mHightlightColor); 3845 mTouchHightlightPaint.setAntiAlias(true); 3846 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3847 TOUCH_HIGHLIGHT_ARC)); 3848 } 3849 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3850 mTouchHightlightPaint); 3851 } 3852 if (DEBUG_TOUCH_HIGHLIGHT) { 3853 if (getSettings().getNavDump()) { 3854 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3855 if (mTouchCrossHairColor == null) { 3856 mTouchCrossHairColor = new Paint(); 3857 mTouchCrossHairColor.setColor(Color.RED); 3858 } 3859 canvas.drawLine(mTouchHighlightX - mNavSlop, 3860 mTouchHighlightY - mNavSlop, mTouchHighlightX 3861 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3862 + 1, mTouchCrossHairColor); 3863 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3864 mTouchHighlightY - mNavSlop, mTouchHighlightX 3865 - mNavSlop, 3866 mTouchHighlightY + mNavSlop + 1, 3867 mTouchCrossHairColor); 3868 } 3869 } 3870 } 3871 } 3872 3873 private void removeTouchHighlight(boolean removePendingMessage) { 3874 if (removePendingMessage) { 3875 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3876 } 3877 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3878 } 3879 3880 @Override 3881 public void setLayoutParams(ViewGroup.LayoutParams params) { 3882 if (params.height == LayoutParams.WRAP_CONTENT) { 3883 mWrapContent = true; 3884 } 3885 super.setLayoutParams(params); 3886 } 3887 3888 @Override 3889 public boolean performLongClick() { 3890 // performLongClick() is the result of a delayed message. If we switch 3891 // to windows overview, the WebView will be temporarily removed from the 3892 // view system. In that case, do nothing. 3893 if (getParent() == null) return false; 3894 3895 // A multi-finger gesture can look like a long press; make sure we don't take 3896 // long press actions if we're scaling. 3897 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 3898 if (detector != null && detector.isInProgress()) { 3899 return false; 3900 } 3901 3902 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3903 // Send the click so that the textfield is in focus 3904 centerKeyPressOnTextField(); 3905 rebuildWebTextView(); 3906 } else { 3907 clearTextEntry(); 3908 } 3909 if (inEditingMode()) { 3910 // Since we just called rebuildWebTextView, the layout is not set 3911 // properly. Update it so it can correctly find the word to select. 3912 mWebTextView.ensureLayout(); 3913 // Provide a touch down event to WebTextView, which will allow it 3914 // to store the location to use in performLongClick. 3915 AbsoluteLayout.LayoutParams params 3916 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 3917 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 3918 mLastTouchTime, MotionEvent.ACTION_DOWN, 3919 mLastTouchX - params.x + mScrollX, 3920 mLastTouchY - params.y + mScrollY, 0); 3921 mWebTextView.dispatchTouchEvent(fake); 3922 return mWebTextView.performLongClick(); 3923 } 3924 if (mSelectingText) return false; // long click does nothing on selection 3925 /* if long click brings up a context menu, the super function 3926 * returns true and we're done. Otherwise, nothing happened when 3927 * the user clicked. */ 3928 if (super.performLongClick()) { 3929 return true; 3930 } 3931 /* In the case where the application hasn't already handled the long 3932 * click action, look for a word under the click. If one is found, 3933 * animate the text selection into view. 3934 * FIXME: no animation code yet */ 3935 return selectText(); 3936 } 3937 3938 /** 3939 * Select the word at the last click point. 3940 * 3941 * @hide pending API council approval 3942 */ 3943 public boolean selectText() { 3944 int x = viewToContentX(mLastTouchX + mScrollX); 3945 int y = viewToContentY(mLastTouchY + mScrollY); 3946 return selectText(x, y); 3947 } 3948 3949 /** 3950 * Select the word at the indicated content coordinates. 3951 */ 3952 boolean selectText(int x, int y) { 3953 if (!setUpSelect(true, x, y)) { 3954 return false; 3955 } 3956 nativeSetExtendSelection(); 3957 mDrawSelectionPointer = false; 3958 mSelectionStarted = true; 3959 mTouchMode = TOUCH_DRAG_MODE; 3960 return true; 3961 } 3962 3963 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 3964 3965 @Override 3966 protected void onConfigurationChanged(Configuration newConfig) { 3967 if (mSelectingText && mOrientation != newConfig.orientation) { 3968 selectionDone(); 3969 } 3970 mOrientation = newConfig.orientation; 3971 } 3972 3973 /** 3974 * Keep track of the Callback so we can end its ActionMode or remove its 3975 * titlebar. 3976 */ 3977 private SelectActionModeCallback mSelectCallback; 3978 3979 // These values are possible options for didUpdateWebTextViewDimensions. 3980 private static final int FULLY_ON_SCREEN = 0; 3981 private static final int INTERSECTS_SCREEN = 1; 3982 private static final int ANYWHERE = 2; 3983 3984 /** 3985 * Check to see if the focused textfield/textarea is still on screen. If it 3986 * is, update the the dimensions and location of WebTextView. Otherwise, 3987 * remove the WebTextView. Should be called when the zoom level changes. 3988 * @param intersection How to determine whether the textfield/textarea is 3989 * still on screen. 3990 * @return boolean True if the textfield/textarea is still on screen and the 3991 * dimensions/location of WebTextView have been updated. 3992 */ 3993 private boolean didUpdateWebTextViewDimensions(int intersection) { 3994 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3995 Rect vBox = contentToViewRect(contentBounds); 3996 Rect visibleRect = new Rect(); 3997 calcOurVisibleRect(visibleRect); 3998 // If the textfield is on screen, place the WebTextView in 3999 // its new place, accounting for our new scroll/zoom values, 4000 // and adjust its textsize. 4001 boolean onScreen; 4002 switch (intersection) { 4003 case FULLY_ON_SCREEN: 4004 onScreen = visibleRect.contains(vBox); 4005 break; 4006 case INTERSECTS_SCREEN: 4007 onScreen = Rect.intersects(visibleRect, vBox); 4008 break; 4009 case ANYWHERE: 4010 onScreen = true; 4011 break; 4012 default: 4013 throw new AssertionError( 4014 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4015 } 4016 if (onScreen) { 4017 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4018 vBox.height()); 4019 mWebTextView.updateTextSize(); 4020 updateWebTextViewPadding(); 4021 return true; 4022 } else { 4023 // The textfield is now off screen. The user probably 4024 // was not zooming to see the textfield better. Remove 4025 // the WebTextView. If the user types a key, and the 4026 // textfield is still in focus, we will reconstruct 4027 // the WebTextView and scroll it back on screen. 4028 mWebTextView.remove(); 4029 return false; 4030 } 4031 } 4032 4033 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator) { 4034 if (mNativeClass == 0) 4035 return; 4036 nativeSetBaseLayer(layer, invalRegion, showVisualIndicator); 4037 } 4038 4039 private void onZoomAnimationStart() { 4040 // If it is in password mode, turn it off so it does not draw misplaced. 4041 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4042 mWebTextView.setInPassword(false); 4043 } 4044 } 4045 4046 private void onZoomAnimationEnd() { 4047 // adjust the edit text view if needed 4048 if (inEditingMode() && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN) 4049 && nativeFocusCandidateIsPassword()) { 4050 // If it is a password field, start drawing the WebTextView once 4051 // again. 4052 mWebTextView.setInPassword(true); 4053 } 4054 } 4055 4056 void onFixedLengthZoomAnimationStart() { 4057 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4058 onZoomAnimationStart(); 4059 } 4060 4061 void onFixedLengthZoomAnimationEnd() { 4062 if (!mSelectingText) { 4063 WebViewCore.resumeUpdatePicture(mWebViewCore); 4064 } 4065 onZoomAnimationEnd(); 4066 } 4067 4068 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4069 Paint.DITHER_FLAG | 4070 Paint.SUBPIXEL_TEXT_FLAG; 4071 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4072 Paint.DITHER_FLAG; 4073 4074 private final DrawFilter mZoomFilter = 4075 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4076 // If we need to trade better quality for speed, set mScrollFilter to null 4077 private final DrawFilter mScrollFilter = 4078 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4079 4080 private void drawCoreAndCursorRing(Canvas canvas, int color, 4081 boolean drawCursorRing) { 4082 if (mDrawHistory) { 4083 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4084 canvas.drawPicture(mHistoryPicture); 4085 return; 4086 } 4087 if (mNativeClass == 0) return; 4088 4089 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4090 boolean animateScroll = ((!mScroller.isFinished() 4091 || mVelocityTracker != null) 4092 && (mTouchMode != TOUCH_DRAG_MODE || 4093 mHeldMotionless != MOTIONLESS_TRUE)) 4094 || mDeferTouchMode == TOUCH_DRAG_MODE; 4095 if (mTouchMode == TOUCH_DRAG_MODE) { 4096 if (mHeldMotionless == MOTIONLESS_PENDING) { 4097 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4098 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4099 mHeldMotionless = MOTIONLESS_FALSE; 4100 } 4101 if (mHeldMotionless == MOTIONLESS_FALSE) { 4102 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4103 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4104 mHeldMotionless = MOTIONLESS_PENDING; 4105 } 4106 } 4107 if (animateZoom) { 4108 mZoomManager.animateZoom(canvas); 4109 } else if (!canvas.isHardwareAccelerated()) { 4110 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4111 } 4112 4113 boolean UIAnimationsRunning = false; 4114 // Currently for each draw we compute the animation values; 4115 // We may in the future decide to do that independently. 4116 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 4117 UIAnimationsRunning = true; 4118 // If we have unfinished (or unstarted) animations, 4119 // we ask for a repaint. 4120 invalidate(); 4121 } 4122 4123 // decide which adornments to draw 4124 int extras = DRAW_EXTRAS_NONE; 4125 if (mFindIsUp) { 4126 extras = DRAW_EXTRAS_FIND; 4127 } else if (mSelectingText) { 4128 extras = DRAW_EXTRAS_SELECTION; 4129 nativeSetSelectionPointer(mDrawSelectionPointer, 4130 mZoomManager.getInvScale(), 4131 mSelectX, mSelectY - getTitleHeight()); 4132 } else if (drawCursorRing) { 4133 extras = DRAW_EXTRAS_CURSOR_RING; 4134 } 4135 if (DebugFlags.WEB_VIEW) { 4136 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4137 + " mSelectingText=" + mSelectingText 4138 + " nativePageShouldHandleShiftAndArrows()=" 4139 + nativePageShouldHandleShiftAndArrows() 4140 + " animateZoom=" + animateZoom 4141 + " extras=" + extras); 4142 } 4143 4144 if (canvas.isHardwareAccelerated()) { 4145 int functor = nativeGetDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 4146 mGLViewportEmpty ? null : mViewRectViewport, getScale(), extras); 4147 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4148 } else { 4149 DrawFilter df = null; 4150 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4151 df = mZoomFilter; 4152 } else if (animateScroll) { 4153 df = mScrollFilter; 4154 } 4155 canvas.setDrawFilter(df); 4156 // XXX: Revisit splitting content. Right now it causes a 4157 // synchronization problem with layers. 4158 int content = nativeDraw(canvas, color, extras, false); 4159 canvas.setDrawFilter(null); 4160 if (content != 0) { 4161 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4162 } 4163 } 4164 4165 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4166 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4167 mTouchMode = TOUCH_SHORTPRESS_MODE; 4168 } 4169 } 4170 if (mFocusSizeChanged) { 4171 mFocusSizeChanged = false; 4172 // If we are zooming, this will get handled above, when the zoom 4173 // finishes. We also do not need to do this unless the WebTextView 4174 // is showing. 4175 if (!animateZoom && inEditingMode()) { 4176 didUpdateWebTextViewDimensions(ANYWHERE); 4177 } 4178 } 4179 } 4180 4181 // draw history 4182 private boolean mDrawHistory = false; 4183 private Picture mHistoryPicture = null; 4184 private int mHistoryWidth = 0; 4185 private int mHistoryHeight = 0; 4186 4187 // Only check the flag, can be called from WebCore thread 4188 boolean drawHistory() { 4189 return mDrawHistory; 4190 } 4191 4192 int getHistoryPictureWidth() { 4193 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4194 } 4195 4196 // Should only be called in UI thread 4197 void switchOutDrawHistory() { 4198 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4199 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4200 mDrawHistory = false; 4201 mHistoryPicture = null; 4202 invalidate(); 4203 int oldScrollX = mScrollX; 4204 int oldScrollY = mScrollY; 4205 mScrollX = pinLocX(mScrollX); 4206 mScrollY = pinLocY(mScrollY); 4207 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4208 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4209 } else { 4210 sendOurVisibleRect(); 4211 } 4212 } 4213 } 4214 4215 WebViewCore.CursorData cursorData() { 4216 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4217 result.mMoveGeneration = nativeMoveGeneration(); 4218 result.mFrame = nativeCursorFramePointer(); 4219 Point position = nativeCursorPosition(); 4220 result.mX = position.x; 4221 result.mY = position.y; 4222 return result; 4223 } 4224 4225 /** 4226 * Delete text from start to end in the focused textfield. If there is no 4227 * focus, or if start == end, silently fail. If start and end are out of 4228 * order, swap them. 4229 * @param start Beginning of selection to delete. 4230 * @param end End of selection to delete. 4231 */ 4232 /* package */ void deleteSelection(int start, int end) { 4233 mTextGeneration++; 4234 WebViewCore.TextSelectionData data 4235 = new WebViewCore.TextSelectionData(start, end); 4236 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4237 data); 4238 } 4239 4240 /** 4241 * Set the selection to (start, end) in the focused textfield. If start and 4242 * end are out of order, swap them. 4243 * @param start Beginning of selection. 4244 * @param end End of selection. 4245 */ 4246 /* package */ void setSelection(int start, int end) { 4247 if (mWebViewCore != null) { 4248 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4249 } 4250 } 4251 4252 @Override 4253 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4254 InputConnection connection = super.onCreateInputConnection(outAttrs); 4255 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4256 return connection; 4257 } 4258 4259 /** 4260 * Called in response to a message from webkit telling us that the soft 4261 * keyboard should be launched. 4262 */ 4263 private void displaySoftKeyboard(boolean isTextView) { 4264 InputMethodManager imm = (InputMethodManager) 4265 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4266 4267 // bring it back to the default level scale so that user can enter text 4268 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4269 if (zoom) { 4270 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4271 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4272 } 4273 if (isTextView) { 4274 rebuildWebTextView(); 4275 if (inEditingMode()) { 4276 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 4277 if (zoom) { 4278 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4279 } 4280 return; 4281 } 4282 } 4283 // Used by plugins and contentEditable. 4284 // Also used if the navigation cache is out of date, and 4285 // does not recognize that a textfield is in focus. In that 4286 // case, use WebView as the targeted view. 4287 // see http://b/issue?id=2457459 4288 imm.showSoftInput(this, 0); 4289 } 4290 4291 // Called by WebKit to instruct the UI to hide the keyboard 4292 private void hideSoftKeyboard() { 4293 InputMethodManager imm = InputMethodManager.peekInstance(); 4294 if (imm != null && (imm.isActive(this) 4295 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4296 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4297 } 4298 } 4299 4300 /* 4301 * This method checks the current focus and cursor and potentially rebuilds 4302 * mWebTextView to have the appropriate properties, such as password, 4303 * multiline, and what text it contains. It also removes it if necessary. 4304 */ 4305 /* package */ void rebuildWebTextView() { 4306 // If the WebView does not have focus, do nothing until it gains focus. 4307 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4308 return; 4309 } 4310 boolean alreadyThere = inEditingMode(); 4311 // inEditingMode can only return true if mWebTextView is non-null, 4312 // so we can safely call remove() if (alreadyThere) 4313 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4314 if (alreadyThere) { 4315 mWebTextView.remove(); 4316 } 4317 return; 4318 } 4319 // At this point, we know we have found an input field, so go ahead 4320 // and create the WebTextView if necessary. 4321 if (mWebTextView == null) { 4322 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4323 // Initialize our generation number. 4324 mTextGeneration = 0; 4325 } 4326 mWebTextView.updateTextSize(); 4327 Rect visibleRect = new Rect(); 4328 calcOurContentVisibleRect(visibleRect); 4329 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4330 // should be in content coordinates. 4331 Rect bounds = nativeFocusCandidateNodeBounds(); 4332 Rect vBox = contentToViewRect(bounds); 4333 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4334 if (!Rect.intersects(bounds, visibleRect)) { 4335 revealSelection(); 4336 } 4337 String text = nativeFocusCandidateText(); 4338 int nodePointer = nativeFocusCandidatePointer(); 4339 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 4340 // It is possible that we have the same textfield, but it has moved, 4341 // i.e. In the case of opening/closing the screen. 4342 // In that case, we need to set the dimensions, but not the other 4343 // aspects. 4344 // If the text has been changed by webkit, update it. However, if 4345 // there has been more UI text input, ignore it. We will receive 4346 // another update when that text is recognized. 4347 if (text != null && !text.equals(mWebTextView.getText().toString()) 4348 && nativeTextGeneration() == mTextGeneration) { 4349 mWebTextView.setTextAndKeepSelection(text); 4350 } 4351 } else { 4352 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 4353 Gravity.RIGHT : Gravity.NO_GRAVITY); 4354 // This needs to be called before setType, which may call 4355 // requestFormData, and it needs to have the correct nodePointer. 4356 mWebTextView.setNodePointer(nodePointer); 4357 mWebTextView.setType(nativeFocusCandidateType()); 4358 updateWebTextViewPadding(); 4359 if (null == text) { 4360 if (DebugFlags.WEB_VIEW) { 4361 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4362 } 4363 text = ""; 4364 } 4365 mWebTextView.setTextAndKeepSelection(text); 4366 InputMethodManager imm = InputMethodManager.peekInstance(); 4367 if (imm != null && imm.isActive(mWebTextView)) { 4368 imm.restartInput(mWebTextView); 4369 } 4370 } 4371 if (isFocused()) { 4372 mWebTextView.requestFocus(); 4373 } 4374 } 4375 4376 /** 4377 * Update the padding of mWebTextView based on the native textfield/textarea 4378 */ 4379 void updateWebTextViewPadding() { 4380 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4381 if (paddingRect != null) { 4382 // Use contentToViewDimension since these are the dimensions of 4383 // the padding. 4384 mWebTextView.setPadding( 4385 contentToViewDimension(paddingRect.left), 4386 contentToViewDimension(paddingRect.top), 4387 contentToViewDimension(paddingRect.right), 4388 contentToViewDimension(paddingRect.bottom)); 4389 } 4390 } 4391 4392 /** 4393 * Tell webkit to put the cursor on screen. 4394 */ 4395 /* package */ void revealSelection() { 4396 if (mWebViewCore != null) { 4397 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4398 } 4399 } 4400 4401 /** 4402 * Called by WebTextView to find saved form data associated with the 4403 * textfield 4404 * @param name Name of the textfield. 4405 * @param nodePointer Pointer to the node of the textfield, so it can be 4406 * compared to the currently focused textfield when the data is 4407 * retrieved. 4408 * @param autoFillable true if WebKit has determined this field is part of 4409 * a form that can be auto filled. 4410 * @param autoComplete true if the attribute "autocomplete" is set to true 4411 * on the textfield. 4412 */ 4413 /* package */ void requestFormData(String name, int nodePointer, 4414 boolean autoFillable, boolean autoComplete) { 4415 if (mWebViewCore.getSettings().getSaveFormData()) { 4416 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4417 update.arg1 = nodePointer; 4418 RequestFormData updater = new RequestFormData(name, getUrl(), 4419 update, autoFillable, autoComplete); 4420 Thread t = new Thread(updater); 4421 t.start(); 4422 } 4423 } 4424 4425 /** 4426 * Pass a message to find out the <label> associated with the <input> 4427 * identified by nodePointer 4428 * @param framePointer Pointer to the frame containing the <input> node 4429 * @param nodePointer Pointer to the node for which a <label> is desired. 4430 */ 4431 /* package */ void requestLabel(int framePointer, int nodePointer) { 4432 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4433 nodePointer); 4434 } 4435 4436 /* 4437 * This class requests an Adapter for the WebTextView which shows past 4438 * entries stored in the database. It is a Runnable so that it can be done 4439 * in its own thread, without slowing down the UI. 4440 */ 4441 private class RequestFormData implements Runnable { 4442 private String mName; 4443 private String mUrl; 4444 private Message mUpdateMessage; 4445 private boolean mAutoFillable; 4446 private boolean mAutoComplete; 4447 4448 public RequestFormData(String name, String url, Message msg, 4449 boolean autoFillable, boolean autoComplete) { 4450 mName = name; 4451 mUrl = url; 4452 mUpdateMessage = msg; 4453 mAutoFillable = autoFillable; 4454 mAutoComplete = autoComplete; 4455 } 4456 4457 public void run() { 4458 ArrayList<String> pastEntries = new ArrayList<String>(); 4459 4460 if (mAutoFillable) { 4461 // Note that code inside the adapter click handler in WebTextView depends 4462 // on the AutoFill item being at the top of the drop down list. If you change 4463 // the order, make sure to do it there too! 4464 WebSettings settings = getSettings(); 4465 if (settings != null && settings.getAutoFillProfile() != null) { 4466 pastEntries.add(getResources().getText( 4467 com.android.internal.R.string.autofill_this_form).toString() + 4468 " " + 4469 mAutoFillData.getPreviewString()); 4470 mWebTextView.setAutoFillProfileIsSet(true); 4471 } else { 4472 // There is no autofill profile set up yet, so add an option that 4473 // will invite the user to set their profile up. 4474 pastEntries.add(getResources().getText( 4475 com.android.internal.R.string.setup_autofill).toString()); 4476 mWebTextView.setAutoFillProfileIsSet(false); 4477 } 4478 } 4479 4480 if (mAutoComplete) { 4481 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4482 } 4483 4484 if (pastEntries.size() > 0) { 4485 AutoCompleteAdapter adapter = new 4486 AutoCompleteAdapter(mContext, pastEntries); 4487 mUpdateMessage.obj = adapter; 4488 mUpdateMessage.sendToTarget(); 4489 } 4490 } 4491 } 4492 4493 /** 4494 * Dump the display tree to "/sdcard/displayTree.txt" 4495 * 4496 * @hide debug only 4497 */ 4498 public void dumpDisplayTree() { 4499 nativeDumpDisplayTree(getUrl()); 4500 } 4501 4502 /** 4503 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4504 * "/sdcard/domTree.txt" 4505 * 4506 * @hide debug only 4507 */ 4508 public void dumpDomTree(boolean toFile) { 4509 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4510 } 4511 4512 /** 4513 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4514 * to "/sdcard/renderTree.txt" 4515 * 4516 * @hide debug only 4517 */ 4518 public void dumpRenderTree(boolean toFile) { 4519 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4520 } 4521 4522 /** 4523 * Called by DRT on UI thread, need to proxy to WebCore thread. 4524 * 4525 * @hide debug only 4526 */ 4527 public void useMockDeviceOrientation() { 4528 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4529 } 4530 4531 /** 4532 * Called by DRT on WebCore thread. 4533 * 4534 * @hide debug only 4535 */ 4536 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4537 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4538 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4539 canProvideGamma, gamma); 4540 } 4541 4542 /** 4543 * Dump the V8 counters to standard output. 4544 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4545 * true. Otherwise, this will do nothing. 4546 * 4547 * @hide debug only 4548 */ 4549 public void dumpV8Counters() { 4550 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4551 } 4552 4553 // This is used to determine long press with the center key. Does not 4554 // affect long press with the trackball/touch. 4555 private boolean mGotCenterDown = false; 4556 4557 @Override 4558 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4559 // send complex characters to webkit for use by JS and plugins 4560 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4561 // pass the key to DOM 4562 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4563 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4564 // return true as DOM handles the key 4565 return true; 4566 } 4567 return false; 4568 } 4569 4570 private boolean isEnterActionKey(int keyCode) { 4571 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 4572 || keyCode == KeyEvent.KEYCODE_ENTER 4573 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 4574 } 4575 4576 @Override 4577 public boolean onKeyDown(int keyCode, KeyEvent event) { 4578 if (DebugFlags.WEB_VIEW) { 4579 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4580 + "keyCode=" + keyCode 4581 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4582 } 4583 4584 // don't implement accelerator keys here; defer to host application 4585 if (event.isCtrlPressed()) { 4586 return false; 4587 } 4588 4589 if (mNativeClass == 0) { 4590 return false; 4591 } 4592 4593 // do this hack up front, so it always works, regardless of touch-mode 4594 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4595 mAutoRedraw = !mAutoRedraw; 4596 if (mAutoRedraw) { 4597 invalidate(); 4598 } 4599 return true; 4600 } 4601 4602 // Bubble up the key event if 4603 // 1. it is a system key; or 4604 // 2. the host application wants to handle it; 4605 if (event.isSystem() 4606 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4607 return false; 4608 } 4609 4610 // accessibility support 4611 if (accessibilityScriptInjected()) { 4612 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4613 // if an accessibility script is injected we delegate to it the key handling. 4614 // this script is a screen reader which is a fully fledged solution for blind 4615 // users to navigate in and interact with web pages. 4616 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4617 return true; 4618 } else { 4619 // Clean up if accessibility was disabled after loading the current URL. 4620 mAccessibilityScriptInjected = false; 4621 } 4622 } else if (mAccessibilityInjector != null) { 4623 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4624 if (mAccessibilityInjector.onKeyEvent(event)) { 4625 // if an accessibility injector is present (no JavaScript enabled or the site 4626 // opts out injecting our JavaScript screen reader) we let it decide whether 4627 // to act on and consume the event. 4628 return true; 4629 } 4630 } else { 4631 // Clean up if accessibility was disabled after loading the current URL. 4632 mAccessibilityInjector = null; 4633 } 4634 } 4635 4636 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4637 if (event.hasNoModifiers()) { 4638 pageUp(false); 4639 return true; 4640 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4641 pageUp(true); 4642 return true; 4643 } 4644 } 4645 4646 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4647 if (event.hasNoModifiers()) { 4648 pageDown(false); 4649 return true; 4650 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4651 pageDown(true); 4652 return true; 4653 } 4654 } 4655 4656 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 4657 pageUp(true); 4658 return true; 4659 } 4660 4661 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 4662 pageDown(true); 4663 return true; 4664 } 4665 4666 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4667 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4668 switchOutDrawHistory(); 4669 if (nativePageShouldHandleShiftAndArrows()) { 4670 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 4671 return true; 4672 } 4673 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4674 switch (keyCode) { 4675 case KeyEvent.KEYCODE_DPAD_UP: 4676 pageUp(true); 4677 return true; 4678 case KeyEvent.KEYCODE_DPAD_DOWN: 4679 pageDown(true); 4680 return true; 4681 case KeyEvent.KEYCODE_DPAD_LEFT: 4682 nativeClearCursor(); // start next trackball movement from page edge 4683 return pinScrollTo(0, mScrollY, true, 0); 4684 case KeyEvent.KEYCODE_DPAD_RIGHT: 4685 nativeClearCursor(); // start next trackball movement from page edge 4686 return pinScrollTo(mContentWidth, mScrollY, true, 0); 4687 } 4688 } 4689 if (mSelectingText) { 4690 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4691 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4692 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4693 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4694 int multiplier = event.getRepeatCount() + 1; 4695 moveSelection(xRate * multiplier, yRate * multiplier); 4696 return true; 4697 } 4698 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4699 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4700 return true; 4701 } 4702 // Bubble up the key event as WebView doesn't handle it 4703 return false; 4704 } 4705 4706 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4707 switchOutDrawHistory(); 4708 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 4709 || nativeCursorWantsKeyEvents(); 4710 if (event.getRepeatCount() == 0) { 4711 if (mSelectingText) { 4712 return true; // discard press if copy in progress 4713 } 4714 mGotCenterDown = true; 4715 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4716 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4717 // Already checked mNativeClass, so we do not need to check it 4718 // again. 4719 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4720 if (!wantsKeyEvents) return true; 4721 } 4722 // Bubble up the key event as WebView doesn't handle it 4723 if (!wantsKeyEvents) return false; 4724 } 4725 4726 if (getSettings().getNavDump()) { 4727 switch (keyCode) { 4728 case KeyEvent.KEYCODE_4: 4729 dumpDisplayTree(); 4730 break; 4731 case KeyEvent.KEYCODE_5: 4732 case KeyEvent.KEYCODE_6: 4733 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4734 break; 4735 case KeyEvent.KEYCODE_7: 4736 case KeyEvent.KEYCODE_8: 4737 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4738 break; 4739 case KeyEvent.KEYCODE_9: 4740 nativeInstrumentReport(); 4741 return true; 4742 } 4743 } 4744 4745 if (nativeCursorIsTextInput()) { 4746 // This message will put the node in focus, for the DOM's notion 4747 // of focus. 4748 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 4749 nativeCursorNodePointer()); 4750 // This will bring up the WebTextView and put it in focus, for 4751 // our view system's notion of focus 4752 rebuildWebTextView(); 4753 // Now we need to pass the event to it 4754 if (inEditingMode()) { 4755 mWebTextView.setDefaultSelection(); 4756 return mWebTextView.dispatchKeyEvent(event); 4757 } 4758 } else if (nativeHasFocusNode()) { 4759 // In this case, the cursor is not on a text input, but the focus 4760 // might be. Check it, and if so, hand over to the WebTextView. 4761 rebuildWebTextView(); 4762 if (inEditingMode()) { 4763 mWebTextView.setDefaultSelection(); 4764 return mWebTextView.dispatchKeyEvent(event); 4765 } 4766 } 4767 4768 // TODO: should we pass all the keys to DOM or check the meta tag 4769 if (nativeCursorWantsKeyEvents() || true) { 4770 // pass the key to DOM 4771 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4772 // return true as DOM handles the key 4773 return true; 4774 } 4775 4776 // Bubble up the key event as WebView doesn't handle it 4777 return false; 4778 } 4779 4780 @Override 4781 public boolean onKeyUp(int keyCode, KeyEvent event) { 4782 if (DebugFlags.WEB_VIEW) { 4783 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4784 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4785 } 4786 4787 if (mNativeClass == 0) { 4788 return false; 4789 } 4790 4791 // special CALL handling when cursor node's href is "tel:XXX" 4792 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4793 String text = nativeCursorText(); 4794 if (!nativeCursorIsTextInput() && text != null 4795 && text.startsWith(SCHEME_TEL)) { 4796 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4797 getContext().startActivity(intent); 4798 return true; 4799 } 4800 } 4801 4802 // Bubble up the key event if 4803 // 1. it is a system key; or 4804 // 2. the host application wants to handle it; 4805 if (event.isSystem() 4806 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4807 return false; 4808 } 4809 4810 // accessibility support 4811 if (accessibilityScriptInjected()) { 4812 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4813 // if an accessibility script is injected we delegate to it the key handling. 4814 // this script is a screen reader which is a fully fledged solution for blind 4815 // users to navigate in and interact with web pages. 4816 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4817 return true; 4818 } else { 4819 // Clean up if accessibility was disabled after loading the current URL. 4820 mAccessibilityScriptInjected = false; 4821 } 4822 } else if (mAccessibilityInjector != null) { 4823 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4824 if (mAccessibilityInjector.onKeyEvent(event)) { 4825 // if an accessibility injector is present (no JavaScript enabled or the site 4826 // opts out injecting our JavaScript screen reader) we let it decide whether to 4827 // act on and consume the event. 4828 return true; 4829 } 4830 } else { 4831 // Clean up if accessibility was disabled after loading the current URL. 4832 mAccessibilityInjector = null; 4833 } 4834 } 4835 4836 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4837 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4838 if (nativePageShouldHandleShiftAndArrows()) { 4839 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 4840 return true; 4841 } 4842 // always handle the navigation keys in the UI thread 4843 // Bubble up the key event as WebView doesn't handle it 4844 return false; 4845 } 4846 4847 if (isEnterActionKey(keyCode)) { 4848 // remove the long press message first 4849 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4850 mGotCenterDown = false; 4851 4852 if (mSelectingText) { 4853 if (mExtendSelection) { 4854 copySelection(); 4855 selectionDone(); 4856 } else { 4857 mExtendSelection = true; 4858 nativeSetExtendSelection(); 4859 invalidate(); // draw the i-beam instead of the arrow 4860 } 4861 return true; // discard press if copy in progress 4862 } 4863 4864 // perform the single click 4865 Rect visibleRect = sendOurVisibleRect(); 4866 // Note that sendOurVisibleRect calls viewToContent, so the 4867 // coordinates should be in content coordinates. 4868 if (!nativeCursorIntersects(visibleRect)) { 4869 return false; 4870 } 4871 WebViewCore.CursorData data = cursorData(); 4872 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4873 playSoundEffect(SoundEffectConstants.CLICK); 4874 if (nativeCursorIsTextInput()) { 4875 rebuildWebTextView(); 4876 centerKeyPressOnTextField(); 4877 if (inEditingMode()) { 4878 mWebTextView.setDefaultSelection(); 4879 } 4880 return true; 4881 } 4882 clearTextEntry(); 4883 nativeShowCursorTimed(); 4884 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4885 return true; 4886 } 4887 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 4888 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4889 nativeCursorNodePointer()); 4890 return true; 4891 } 4892 } 4893 4894 // TODO: should we pass all the keys to DOM or check the meta tag 4895 if (nativeCursorWantsKeyEvents() || true) { 4896 // pass the key to DOM 4897 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4898 // return true as DOM handles the key 4899 return true; 4900 } 4901 4902 // Bubble up the key event as WebView doesn't handle it 4903 return false; 4904 } 4905 4906 /* 4907 * Enter selecting text mode, and see if CAB should be shown. 4908 * Returns true if the WebView is now in 4909 * selecting text mode (including if it was already in that mode, and this 4910 * method did nothing). 4911 */ 4912 private boolean setUpSelect(boolean selectWord, int x, int y) { 4913 if (0 == mNativeClass) return false; // client isn't initialized 4914 if (inFullScreenMode()) return false; 4915 if (mSelectingText) return true; 4916 nativeResetSelection(); 4917 if (selectWord && !nativeWordSelection(x, y)) { 4918 selectionDone(); 4919 return false; 4920 } 4921 mSelectCallback = new SelectActionModeCallback(); 4922 mSelectCallback.setWebView(this); 4923 if (startActionMode(mSelectCallback) == null) { 4924 // There is no ActionMode, so do not allow the user to modify a 4925 // selection. 4926 selectionDone(); 4927 return false; 4928 } 4929 mExtendSelection = false; 4930 mSelectingText = mDrawSelectionPointer = true; 4931 // don't let the picture change during text selection 4932 WebViewCore.pauseUpdatePicture(mWebViewCore); 4933 if (nativeHasCursorNode()) { 4934 Rect rect = nativeCursorNodeBounds(); 4935 mSelectX = contentToViewX(rect.left); 4936 mSelectY = contentToViewY(rect.top); 4937 } else if (mLastTouchY > getVisibleTitleHeight()) { 4938 mSelectX = mScrollX + mLastTouchX; 4939 mSelectY = mScrollY + mLastTouchY; 4940 } else { 4941 mSelectX = mScrollX + getViewWidth() / 2; 4942 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4943 } 4944 nativeHideCursor(); 4945 mMinAutoScrollX = 0; 4946 mMaxAutoScrollX = getViewWidth(); 4947 mMinAutoScrollY = 0; 4948 mMaxAutoScrollY = getViewHeightWithTitle(); 4949 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 4950 viewToContentY(mSelectY), mScrollingLayerRect, 4951 mScrollingLayerBounds); 4952 if (mScrollingLayer != 0) { 4953 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 4954 mMinAutoScrollX = Math.max(mMinAutoScrollX, 4955 contentToViewX(mScrollingLayerBounds.left)); 4956 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 4957 contentToViewX(mScrollingLayerBounds.right)); 4958 } 4959 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 4960 mMinAutoScrollY = Math.max(mMinAutoScrollY, 4961 contentToViewY(mScrollingLayerBounds.top)); 4962 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 4963 contentToViewY(mScrollingLayerBounds.bottom)); 4964 } 4965 } 4966 mMinAutoScrollX += SELECT_SCROLL; 4967 mMaxAutoScrollX -= SELECT_SCROLL; 4968 mMinAutoScrollY += SELECT_SCROLL; 4969 mMaxAutoScrollY -= SELECT_SCROLL; 4970 return true; 4971 } 4972 4973 /** 4974 * Use this method to put the WebView into text selection mode. 4975 * Do not rely on this functionality; it will be deprecated in the future. 4976 * @deprecated This method is now obsolete. 4977 */ 4978 @Deprecated 4979 public void emulateShiftHeld() { 4980 setUpSelect(false, 0, 0); 4981 } 4982 4983 /** 4984 * Select all of the text in this WebView. 4985 * 4986 * @hide pending API council approval. 4987 */ 4988 public void selectAll() { 4989 if (0 == mNativeClass) return; // client isn't initialized 4990 if (inFullScreenMode()) return; 4991 if (!mSelectingText) { 4992 // retrieve a point somewhere within the text 4993 Point select = nativeSelectableText(); 4994 if (!selectText(select.x, select.y)) return; 4995 } 4996 nativeSelectAll(); 4997 mDrawSelectionPointer = false; 4998 mExtendSelection = true; 4999 invalidate(); 5000 } 5001 5002 /** 5003 * Called when the selection has been removed. 5004 */ 5005 void selectionDone() { 5006 if (mSelectingText) { 5007 mSelectingText = false; 5008 // finish is idempotent, so this is fine even if selectionDone was 5009 // called by mSelectCallback.onDestroyActionMode 5010 mSelectCallback.finish(); 5011 mSelectCallback = null; 5012 WebViewCore.resumePriority(); 5013 WebViewCore.resumeUpdatePicture(mWebViewCore); 5014 invalidate(); // redraw without selection 5015 mAutoScrollX = 0; 5016 mAutoScrollY = 0; 5017 mSentAutoScrollMessage = false; 5018 } 5019 } 5020 5021 /** 5022 * Copy the selection to the clipboard 5023 * 5024 * @hide pending API council approval. 5025 */ 5026 public boolean copySelection() { 5027 boolean copiedSomething = false; 5028 String selection = getSelection(); 5029 if (selection != null && selection != "") { 5030 if (DebugFlags.WEB_VIEW) { 5031 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5032 } 5033 Toast.makeText(mContext 5034 , com.android.internal.R.string.text_copied 5035 , Toast.LENGTH_SHORT).show(); 5036 copiedSomething = true; 5037 ClipboardManager cm = (ClipboardManager)getContext() 5038 .getSystemService(Context.CLIPBOARD_SERVICE); 5039 cm.setText(selection); 5040 } 5041 invalidate(); // remove selection region and pointer 5042 return copiedSomething; 5043 } 5044 5045 /** 5046 * @hide pending API Council approval. 5047 */ 5048 public SearchBox getSearchBox() { 5049 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5050 return null; 5051 } 5052 return mWebViewCore.getBrowserFrame().getSearchBox(); 5053 } 5054 5055 /** 5056 * Returns the currently highlighted text as a string. 5057 */ 5058 String getSelection() { 5059 if (mNativeClass == 0) return ""; 5060 return nativeGetSelection(); 5061 } 5062 5063 @Override 5064 protected void onAttachedToWindow() { 5065 super.onAttachedToWindow(); 5066 if (hasWindowFocus()) setActive(true); 5067 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5068 if (mGlobalLayoutListener == null) { 5069 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5070 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5071 } 5072 if (mScrollChangedListener == null) { 5073 mScrollChangedListener = new InnerScrollChangedListener(); 5074 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5075 } 5076 5077 addAccessibilityApisToJavaScript(); 5078 5079 mTouchEventQueue.reset(); 5080 } 5081 5082 @Override 5083 protected void onDetachedFromWindow() { 5084 clearHelpers(); 5085 mZoomManager.dismissZoomPicker(); 5086 if (hasWindowFocus()) setActive(false); 5087 5088 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5089 if (mGlobalLayoutListener != null) { 5090 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5091 mGlobalLayoutListener = null; 5092 } 5093 if (mScrollChangedListener != null) { 5094 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5095 mScrollChangedListener = null; 5096 } 5097 5098 removeAccessibilityApisFromJavaScript(); 5099 5100 super.onDetachedFromWindow(); 5101 } 5102 5103 @Override 5104 protected void onVisibilityChanged(View changedView, int visibility) { 5105 super.onVisibilityChanged(changedView, visibility); 5106 // The zoomManager may be null if the webview is created from XML that 5107 // specifies the view's visibility param as not visible (see http://b/2794841) 5108 if (visibility != View.VISIBLE && mZoomManager != null) { 5109 mZoomManager.dismissZoomPicker(); 5110 } 5111 } 5112 5113 /** 5114 * @deprecated WebView no longer needs to implement 5115 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5116 */ 5117 @Deprecated 5118 public void onChildViewAdded(View parent, View child) {} 5119 5120 /** 5121 * @deprecated WebView no longer needs to implement 5122 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5123 */ 5124 @Deprecated 5125 public void onChildViewRemoved(View p, View child) {} 5126 5127 /** 5128 * @deprecated WebView should not have implemented 5129 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5130 */ 5131 @Deprecated 5132 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5133 } 5134 5135 void setActive(boolean active) { 5136 if (active) { 5137 if (hasFocus()) { 5138 // If our window regained focus, and we have focus, then begin 5139 // drawing the cursor ring 5140 mDrawCursorRing = true; 5141 setFocusControllerActive(true); 5142 if (mNativeClass != 0) { 5143 nativeRecordButtons(true, false, true); 5144 } 5145 } else { 5146 if (!inEditingMode()) { 5147 // If our window gained focus, but we do not have it, do not 5148 // draw the cursor ring. 5149 mDrawCursorRing = false; 5150 setFocusControllerActive(false); 5151 } 5152 // We do not call nativeRecordButtons here because we assume 5153 // that when we lost focus, or window focus, it got called with 5154 // false for the first parameter 5155 } 5156 } else { 5157 if (!mZoomManager.isZoomPickerVisible()) { 5158 /* 5159 * The external zoom controls come in their own window, so our 5160 * window loses focus. Our policy is to not draw the cursor ring 5161 * if our window is not focused, but this is an exception since 5162 * the user can still navigate the web page with the zoom 5163 * controls showing. 5164 */ 5165 mDrawCursorRing = false; 5166 } 5167 mKeysPressed.clear(); 5168 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5169 mTouchMode = TOUCH_DONE_MODE; 5170 if (mNativeClass != 0) { 5171 nativeRecordButtons(false, false, true); 5172 } 5173 setFocusControllerActive(false); 5174 } 5175 invalidate(); 5176 } 5177 5178 // To avoid drawing the cursor ring, and remove the TextView when our window 5179 // loses focus. 5180 @Override 5181 public void onWindowFocusChanged(boolean hasWindowFocus) { 5182 setActive(hasWindowFocus); 5183 if (hasWindowFocus) { 5184 JWebCoreJavaBridge.setActiveWebView(this); 5185 } else { 5186 JWebCoreJavaBridge.removeActiveWebView(this); 5187 } 5188 super.onWindowFocusChanged(hasWindowFocus); 5189 } 5190 5191 /* 5192 * Pass a message to WebCore Thread, telling the WebCore::Page's 5193 * FocusController to be "inactive" so that it will 5194 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5195 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5196 */ 5197 /* package */ void setFocusControllerActive(boolean active) { 5198 if (mWebViewCore == null) return; 5199 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5200 // Need to send this message after the document regains focus. 5201 if (active && mListBoxMessage != null) { 5202 mWebViewCore.sendMessage(mListBoxMessage); 5203 mListBoxMessage = null; 5204 } 5205 } 5206 5207 @Override 5208 protected void onFocusChanged(boolean focused, int direction, 5209 Rect previouslyFocusedRect) { 5210 if (DebugFlags.WEB_VIEW) { 5211 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5212 } 5213 if (focused) { 5214 // When we regain focus, if we have window focus, resume drawing 5215 // the cursor ring 5216 if (hasWindowFocus()) { 5217 mDrawCursorRing = true; 5218 if (mNativeClass != 0) { 5219 nativeRecordButtons(true, false, true); 5220 } 5221 setFocusControllerActive(true); 5222 //} else { 5223 // The WebView has gained focus while we do not have 5224 // windowfocus. When our window lost focus, we should have 5225 // called nativeRecordButtons(false...) 5226 } 5227 } else { 5228 // When we lost focus, unless focus went to the TextView (which is 5229 // true if we are in editing mode), stop drawing the cursor ring. 5230 if (!inEditingMode()) { 5231 mDrawCursorRing = false; 5232 if (mNativeClass != 0) { 5233 nativeRecordButtons(false, false, true); 5234 } 5235 setFocusControllerActive(false); 5236 } 5237 mKeysPressed.clear(); 5238 } 5239 5240 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5241 } 5242 5243 void setGLRectViewport() { 5244 // Use the getGlobalVisibleRect() to get the intersection among the parents 5245 // visible == false means we're clipped - send a null rect down to indicate that 5246 // we should not draw 5247 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5248 if (visible) { 5249 // Then need to invert the Y axis, just for GL 5250 View rootView = getRootView(); 5251 int rootViewHeight = rootView.getHeight(); 5252 mViewRectViewport.set(mGLRectViewport); 5253 int savedWebViewBottom = mGLRectViewport.bottom; 5254 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeight(); 5255 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5256 mGLViewportEmpty = false; 5257 } else { 5258 mGLViewportEmpty = true; 5259 } 5260 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 5261 mGLViewportEmpty ? null : mViewRectViewport); 5262 } 5263 5264 /** 5265 * @hide 5266 */ 5267 @Override 5268 protected boolean setFrame(int left, int top, int right, int bottom) { 5269 boolean changed = super.setFrame(left, top, right, bottom); 5270 if (!changed && mHeightCanMeasure) { 5271 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5272 // in WebViewCore after we get the first layout. We do call 5273 // requestLayout() when we get contentSizeChanged(). But the View 5274 // system won't call onSizeChanged if the dimension is not changed. 5275 // In this case, we need to call sendViewSizeZoom() explicitly to 5276 // notify the WebKit about the new dimensions. 5277 sendViewSizeZoom(false); 5278 } 5279 setGLRectViewport(); 5280 return changed; 5281 } 5282 5283 @Override 5284 protected void onSizeChanged(int w, int h, int ow, int oh) { 5285 super.onSizeChanged(w, h, ow, oh); 5286 5287 // adjust the max viewport width depending on the view dimensions. This 5288 // is to ensure the scaling is not going insane. So do not shrink it if 5289 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5290 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5291 if (newMaxViewportWidth > sMaxViewportWidth) { 5292 sMaxViewportWidth = newMaxViewportWidth; 5293 } 5294 5295 mZoomManager.onSizeChanged(w, h, ow, oh); 5296 } 5297 5298 @Override 5299 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5300 super.onScrollChanged(l, t, oldl, oldt); 5301 if (!mInOverScrollMode) { 5302 sendOurVisibleRect(); 5303 // update WebKit if visible title bar height changed. The logic is same 5304 // as getVisibleTitleHeight. 5305 int titleHeight = getTitleHeight(); 5306 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5307 sendViewSizeZoom(false); 5308 } 5309 } 5310 } 5311 5312 @Override 5313 public boolean dispatchKeyEvent(KeyEvent event) { 5314 switch (event.getAction()) { 5315 case KeyEvent.ACTION_DOWN: 5316 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5317 break; 5318 case KeyEvent.ACTION_MULTIPLE: 5319 // Always accept the action. 5320 break; 5321 case KeyEvent.ACTION_UP: 5322 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5323 if (location == -1) { 5324 // We did not receive the key down for this key, so do not 5325 // handle the key up. 5326 return false; 5327 } else { 5328 // We did receive the key down. Handle the key up, and 5329 // remove it from our pressed keys. 5330 mKeysPressed.remove(location); 5331 } 5332 break; 5333 default: 5334 // Accept the action. This should not happen, unless a new 5335 // action is added to KeyEvent. 5336 break; 5337 } 5338 if (inEditingMode() && mWebTextView.isFocused()) { 5339 // Ensure that the WebTextView gets the event, even if it does 5340 // not currently have a bounds. 5341 return mWebTextView.dispatchKeyEvent(event); 5342 } else { 5343 return super.dispatchKeyEvent(event); 5344 } 5345 } 5346 5347 // Here are the snap align logic: 5348 // 1. If it starts nearly horizontally or vertically, snap align; 5349 // 2. If there is a dramitic direction change, let it go; 5350 // 3. If there is a same direction back and forth, lock it. 5351 5352 // adjustable parameters 5353 private int mMinLockSnapReverseDistance; 5354 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 5355 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 5356 5357 private boolean hitFocusedPlugin(int contentX, int contentY) { 5358 if (DebugFlags.WEB_VIEW) { 5359 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5360 Rect r = nativeFocusNodeBounds(); 5361 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5362 + ", " + r.right + ", " + r.bottom + ")"); 5363 } 5364 return nativeFocusIsPlugin() 5365 && nativeFocusNodeBounds().contains(contentX, contentY); 5366 } 5367 5368 private boolean shouldForwardTouchEvent() { 5369 return mFullScreenHolder != null || (mForwardTouchEvents 5370 && !mSelectingText 5371 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 5372 } 5373 5374 private boolean inFullScreenMode() { 5375 return mFullScreenHolder != null; 5376 } 5377 5378 private void dismissFullScreenMode() { 5379 if (inFullScreenMode()) { 5380 mFullScreenHolder.dismiss(); 5381 mFullScreenHolder = null; 5382 } 5383 } 5384 5385 void onPinchToZoomAnimationStart() { 5386 // cancel the single touch handling 5387 cancelTouch(); 5388 onZoomAnimationStart(); 5389 } 5390 5391 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5392 onZoomAnimationEnd(); 5393 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5394 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5395 // as it may trigger the unwanted fling. 5396 mTouchMode = TOUCH_PINCH_DRAG; 5397 mConfirmMove = true; 5398 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5399 } 5400 5401 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5402 // layer is found. 5403 private void startScrollingLayer(float x, float y) { 5404 int contentX = viewToContentX((int) x + mScrollX); 5405 int contentY = viewToContentY((int) y + mScrollY); 5406 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5407 mScrollingLayerRect, mScrollingLayerBounds); 5408 if (mScrollingLayer != 0) { 5409 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5410 } 5411 } 5412 5413 // 1/(density * density) used to compute the distance between points. 5414 // Computed in init(). 5415 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5416 5417 // The distance between two points reported in onTouchEvent scaled by the 5418 // density of the screen. 5419 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5420 5421 @Override 5422 public boolean onTouchEvent(MotionEvent ev) { 5423 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5424 return false; 5425 } 5426 5427 if (DebugFlags.WEB_VIEW) { 5428 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5429 + " mTouchMode=" + mTouchMode 5430 + " numPointers=" + ev.getPointerCount()); 5431 } 5432 5433 // If WebKit wasn't interested in this multitouch gesture, enqueue 5434 // the event for handling directly rather than making the round trip 5435 // to WebKit and back. 5436 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 5437 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 5438 } else { 5439 mTouchEventQueue.enqueueTouchEvent(ev); 5440 } 5441 5442 // Since all events are handled asynchronously, we always want the gesture stream. 5443 return true; 5444 } 5445 5446 /* 5447 * Common code for single touch and multi-touch. 5448 * (x, y) denotes current focus point, which is the touch point for single touch 5449 * and the middle point for multi-touch. 5450 */ 5451 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 5452 long eventTime = ev.getEventTime(); 5453 5454 5455 // Due to the touch screen edge effect, a touch closer to the edge 5456 // always snapped to the edge. As getViewWidth() can be different from 5457 // getWidth() due to the scrollbar, adjusting the point to match 5458 // getViewWidth(). Same applied to the height. 5459 x = Math.min(x, getViewWidth() - 1); 5460 y = Math.min(y, getViewHeightWithTitle() - 1); 5461 5462 int deltaX = mLastTouchX - x; 5463 int deltaY = mLastTouchY - y; 5464 int contentX = viewToContentX(x + mScrollX); 5465 int contentY = viewToContentY(y + mScrollY); 5466 5467 switch (action) { 5468 case MotionEvent.ACTION_DOWN: { 5469 mPreventDefault = PREVENT_DEFAULT_NO; 5470 mConfirmMove = false; 5471 mInitialHitTestResult = null; 5472 if (!mScroller.isFinished()) { 5473 // stop the current scroll animation, but if this is 5474 // the start of a fling, allow it to add to the current 5475 // fling's velocity 5476 mScroller.abortAnimation(); 5477 mTouchMode = TOUCH_DRAG_START_MODE; 5478 mConfirmMove = true; 5479 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5480 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5481 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5482 if (getSettings().supportTouchOnly()) { 5483 removeTouchHighlight(true); 5484 } 5485 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5486 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5487 } else { 5488 // commit the short press action for the previous tap 5489 doShortPress(); 5490 mTouchMode = TOUCH_INIT_MODE; 5491 mDeferTouchProcess = (!inFullScreenMode() 5492 && mForwardTouchEvents) ? hitFocusedPlugin( 5493 contentX, contentY) : false; 5494 } 5495 } else { // the normal case 5496 mTouchMode = TOUCH_INIT_MODE; 5497 mDeferTouchProcess = (!inFullScreenMode() 5498 && mForwardTouchEvents) ? hitFocusedPlugin( 5499 contentX, contentY) : false; 5500 mWebViewCore.sendMessage( 5501 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5502 if (getSettings().supportTouchOnly()) { 5503 TouchHighlightData data = new TouchHighlightData(); 5504 data.mX = contentX; 5505 data.mY = contentY; 5506 data.mSlop = viewToContentDimension(mNavSlop); 5507 mWebViewCore.sendMessageDelayed( 5508 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 5509 ViewConfiguration.getTapTimeout()); 5510 if (DEBUG_TOUCH_HIGHLIGHT) { 5511 if (getSettings().getNavDump()) { 5512 mTouchHighlightX = (int) x + mScrollX; 5513 mTouchHighlightY = (int) y + mScrollY; 5514 mPrivateHandler.postDelayed(new Runnable() { 5515 public void run() { 5516 mTouchHighlightX = mTouchHighlightY = 0; 5517 invalidate(); 5518 } 5519 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5520 } 5521 } 5522 } 5523 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5524 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5525 (eventTime - mLastTouchUpTime), eventTime); 5526 } 5527 if (mSelectingText) { 5528 mDrawSelectionPointer = false; 5529 mSelectionStarted = nativeStartSelection(contentX, contentY); 5530 if (DebugFlags.WEB_VIEW) { 5531 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5532 } 5533 invalidate(); 5534 } 5535 } 5536 // Trigger the link 5537 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 5538 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 5539 mPrivateHandler.sendEmptyMessageDelayed( 5540 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5541 mPrivateHandler.sendEmptyMessageDelayed( 5542 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5543 if (inFullScreenMode() || mDeferTouchProcess) { 5544 mPreventDefault = PREVENT_DEFAULT_YES; 5545 } else if (mForwardTouchEvents) { 5546 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5547 } else { 5548 mPreventDefault = PREVENT_DEFAULT_NO; 5549 } 5550 // pass the touch events from UI thread to WebCore thread 5551 if (shouldForwardTouchEvent()) { 5552 TouchEventData ted = new TouchEventData(); 5553 ted.mAction = action; 5554 ted.mIds = new int[1]; 5555 ted.mIds[0] = ev.getPointerId(0); 5556 ted.mPoints = new Point[1]; 5557 ted.mPoints[0] = new Point(contentX, contentY); 5558 ted.mMetaState = ev.getMetaState(); 5559 ted.mReprocess = mDeferTouchProcess; 5560 ted.mNativeLayer = nativeScrollableLayer( 5561 contentX, contentY, ted.mNativeLayerRect, null); 5562 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5563 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5564 if (mDeferTouchProcess) { 5565 // still needs to set them for compute deltaX/Y 5566 mLastTouchX = x; 5567 mLastTouchY = y; 5568 break; 5569 } 5570 if (!inFullScreenMode()) { 5571 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5572 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5573 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5574 action, 0), TAP_TIMEOUT); 5575 } 5576 } 5577 } 5578 startTouch(x, y, eventTime); 5579 break; 5580 } 5581 case MotionEvent.ACTION_MOVE: { 5582 boolean firstMove = false; 5583 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5584 >= mTouchSlopSquare) { 5585 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5586 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5587 mConfirmMove = true; 5588 firstMove = true; 5589 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5590 mTouchMode = TOUCH_INIT_MODE; 5591 } 5592 if (getSettings().supportTouchOnly()) { 5593 removeTouchHighlight(true); 5594 } 5595 } 5596 // pass the touch events from UI thread to WebCore thread 5597 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5598 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5599 TouchEventData ted = new TouchEventData(); 5600 ted.mAction = action; 5601 ted.mIds = new int[1]; 5602 ted.mIds[0] = ev.getPointerId(0); 5603 ted.mPoints = new Point[1]; 5604 ted.mPoints[0] = new Point(contentX, contentY); 5605 ted.mMetaState = ev.getMetaState(); 5606 ted.mReprocess = mDeferTouchProcess; 5607 ted.mNativeLayer = mScrollingLayer; 5608 ted.mNativeLayerRect.set(mScrollingLayerRect); 5609 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5610 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5611 mLastSentTouchTime = eventTime; 5612 if (mDeferTouchProcess) { 5613 break; 5614 } 5615 if (firstMove && !inFullScreenMode()) { 5616 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5617 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5618 action, 0), TAP_TIMEOUT); 5619 } 5620 } 5621 if (mTouchMode == TOUCH_DONE_MODE 5622 || mPreventDefault == PREVENT_DEFAULT_YES) { 5623 // no dragging during scroll zoom animation, or when prevent 5624 // default is yes 5625 break; 5626 } 5627 if (mVelocityTracker == null) { 5628 Log.e(LOGTAG, "Got null mVelocityTracker when " 5629 + "mPreventDefault = " + mPreventDefault 5630 + " mDeferTouchProcess = " + mDeferTouchProcess 5631 + " mTouchMode = " + mTouchMode); 5632 } else { 5633 mVelocityTracker.addMovement(ev); 5634 } 5635 if (mSelectingText && mSelectionStarted) { 5636 if (DebugFlags.WEB_VIEW) { 5637 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5638 } 5639 ViewParent parent = getParent(); 5640 if (parent != null) { 5641 parent.requestDisallowInterceptTouchEvent(true); 5642 } 5643 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 5644 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 5645 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 5646 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 5647 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 5648 && !mSentAutoScrollMessage) { 5649 mSentAutoScrollMessage = true; 5650 mPrivateHandler.sendEmptyMessageDelayed( 5651 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 5652 } 5653 if (deltaX != 0 || deltaY != 0) { 5654 nativeExtendSelection(contentX, contentY); 5655 invalidate(); 5656 } 5657 break; 5658 } 5659 5660 if (mTouchMode != TOUCH_DRAG_MODE && 5661 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5662 5663 if (!mConfirmMove) { 5664 break; 5665 } 5666 5667 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5668 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5669 // track mLastTouchTime as we may need to do fling at 5670 // ACTION_UP 5671 mLastTouchTime = eventTime; 5672 break; 5673 } 5674 5675 // Only lock dragging to one axis if we don't have a scale in progress. 5676 // Scaling implies free-roaming movement. Note this is only ever a question 5677 // if mZoomManager.supportsPanDuringZoom() is true. 5678 final ScaleGestureDetector detector = 5679 mZoomManager.getMultiTouchGestureDetector(); 5680 if (detector == null || !detector.isInProgress()) { 5681 // if it starts nearly horizontal or vertical, enforce it 5682 int ax = Math.abs(deltaX); 5683 int ay = Math.abs(deltaY); 5684 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5685 mSnapScrollMode = SNAP_X; 5686 mSnapPositive = deltaX > 0; 5687 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5688 mSnapScrollMode = SNAP_Y; 5689 mSnapPositive = deltaY > 0; 5690 } 5691 } 5692 5693 mTouchMode = TOUCH_DRAG_MODE; 5694 mLastTouchX = x; 5695 mLastTouchY = y; 5696 deltaX = 0; 5697 deltaY = 0; 5698 5699 startScrollingLayer(x, y); 5700 startDrag(); 5701 } 5702 5703 // do pan 5704 boolean done = false; 5705 boolean keepScrollBarsVisible = false; 5706 if (deltaX == 0 && deltaY == 0) { 5707 keepScrollBarsVisible = done = true; 5708 } else { 5709 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5710 int ax = Math.abs(deltaX); 5711 int ay = Math.abs(deltaY); 5712 if (mSnapScrollMode == SNAP_X) { 5713 // radical change means getting out of snap mode 5714 if (ay > MAX_SLOPE_FOR_DIAG * ax 5715 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5716 mSnapScrollMode = SNAP_NONE; 5717 } 5718 // reverse direction means lock in the snap mode 5719 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5720 (mSnapPositive 5721 ? deltaX < -mMinLockSnapReverseDistance 5722 : deltaX > mMinLockSnapReverseDistance)) { 5723 mSnapScrollMode |= SNAP_LOCK; 5724 } 5725 } else { 5726 // radical change means getting out of snap mode 5727 if (ax > MAX_SLOPE_FOR_DIAG * ay 5728 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5729 mSnapScrollMode = SNAP_NONE; 5730 } 5731 // reverse direction means lock in the snap mode 5732 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5733 (mSnapPositive 5734 ? deltaY < -mMinLockSnapReverseDistance 5735 : deltaY > mMinLockSnapReverseDistance)) { 5736 mSnapScrollMode |= SNAP_LOCK; 5737 } 5738 } 5739 } 5740 if (mSnapScrollMode != SNAP_NONE) { 5741 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5742 deltaY = 0; 5743 } else { 5744 deltaX = 0; 5745 } 5746 } 5747 if ((deltaX | deltaY) != 0) { 5748 if (deltaX != 0) { 5749 mLastTouchX = x; 5750 } 5751 if (deltaY != 0) { 5752 mLastTouchY = y; 5753 } 5754 mHeldMotionless = MOTIONLESS_FALSE; 5755 } 5756 mLastTouchTime = eventTime; 5757 } 5758 5759 doDrag(deltaX, deltaY); 5760 5761 // Turn off scrollbars when dragging a layer. 5762 if (keepScrollBarsVisible && 5763 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5764 if (mHeldMotionless != MOTIONLESS_TRUE) { 5765 mHeldMotionless = MOTIONLESS_TRUE; 5766 invalidate(); 5767 } 5768 // keep the scrollbar on the screen even there is no scroll 5769 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5770 false); 5771 // return false to indicate that we can't pan out of the 5772 // view space 5773 return !done; 5774 } 5775 break; 5776 } 5777 case MotionEvent.ACTION_UP: { 5778 if (!isFocused()) requestFocus(); 5779 // pass the touch events from UI thread to WebCore thread 5780 if (shouldForwardTouchEvent()) { 5781 TouchEventData ted = new TouchEventData(); 5782 ted.mIds = new int[1]; 5783 ted.mIds[0] = ev.getPointerId(0); 5784 ted.mAction = action; 5785 ted.mPoints = new Point[1]; 5786 ted.mPoints[0] = new Point(contentX, contentY); 5787 ted.mMetaState = ev.getMetaState(); 5788 ted.mReprocess = mDeferTouchProcess; 5789 ted.mNativeLayer = mScrollingLayer; 5790 ted.mNativeLayerRect.set(mScrollingLayerRect); 5791 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5792 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5793 } 5794 mLastTouchUpTime = eventTime; 5795 if (mSentAutoScrollMessage) { 5796 mAutoScrollX = mAutoScrollY = 0; 5797 } 5798 switch (mTouchMode) { 5799 case TOUCH_DOUBLE_TAP_MODE: // double tap 5800 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5801 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5802 if (inFullScreenMode() || mDeferTouchProcess) { 5803 TouchEventData ted = new TouchEventData(); 5804 ted.mIds = new int[1]; 5805 ted.mIds[0] = ev.getPointerId(0); 5806 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 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 = nativeScrollableLayer( 5812 contentX, contentY, 5813 ted.mNativeLayerRect, null); 5814 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5815 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5816 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5817 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5818 mTouchMode = TOUCH_DONE_MODE; 5819 } 5820 break; 5821 case TOUCH_INIT_MODE: // tap 5822 case TOUCH_SHORTPRESS_START_MODE: 5823 case TOUCH_SHORTPRESS_MODE: 5824 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5825 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5826 if (mConfirmMove) { 5827 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5828 " WebCore's response for touch down."); 5829 if (mPreventDefault != PREVENT_DEFAULT_YES 5830 && (computeMaxScrollX() > 0 5831 || computeMaxScrollY() > 0)) { 5832 // If the user has performed a very quick touch 5833 // sequence it is possible that we may get here 5834 // before WebCore has had a chance to process the events. 5835 // In this case, any call to preventDefault in the 5836 // JS touch handler will not have been executed yet. 5837 // Hence we will see both the UI (now) and WebCore 5838 // (when context switches) handling the event, 5839 // regardless of whether the web developer actually 5840 // doeses preventDefault in their touch handler. This 5841 // is the nature of our asynchronous touch model. 5842 5843 // we will not rewrite drag code here, but we 5844 // will try fling if it applies. 5845 WebViewCore.reducePriority(); 5846 // to get better performance, pause updating the 5847 // picture 5848 WebViewCore.pauseUpdatePicture(mWebViewCore); 5849 // fall through to TOUCH_DRAG_MODE 5850 } else { 5851 // WebKit may consume the touch event and modify 5852 // DOM. drawContentPicture() will be called with 5853 // animateSroll as true for better performance. 5854 // Force redraw in high-quality. 5855 invalidate(); 5856 break; 5857 } 5858 } else { 5859 if (mSelectingText) { 5860 // tapping on selection or controls does nothing 5861 if (!nativeHitSelection(contentX, contentY)) { 5862 selectionDone(); 5863 } 5864 break; 5865 } 5866 // only trigger double tap if the WebView is 5867 // scalable 5868 if (mTouchMode == TOUCH_INIT_MODE 5869 && (canZoomIn() || canZoomOut())) { 5870 mPrivateHandler.sendEmptyMessageDelayed( 5871 RELEASE_SINGLE_TAP, ViewConfiguration 5872 .getDoubleTapTimeout()); 5873 } else { 5874 doShortPress(); 5875 } 5876 break; 5877 } 5878 case TOUCH_DRAG_MODE: 5879 case TOUCH_DRAG_LAYER_MODE: 5880 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5881 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5882 // if the user waits a while w/o moving before the 5883 // up, we don't want to do a fling 5884 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5885 if (mVelocityTracker == null) { 5886 Log.e(LOGTAG, "Got null mVelocityTracker when " 5887 + "mPreventDefault = " 5888 + mPreventDefault 5889 + " mDeferTouchProcess = " 5890 + mDeferTouchProcess); 5891 } else { 5892 mVelocityTracker.addMovement(ev); 5893 } 5894 // set to MOTIONLESS_IGNORE so that it won't keep 5895 // removing and sending message in 5896 // drawCoreAndCursorRing() 5897 mHeldMotionless = MOTIONLESS_IGNORE; 5898 doFling(); 5899 break; 5900 } else { 5901 if (mScroller.springBack(mScrollX, mScrollY, 0, 5902 computeMaxScrollX(), 0, 5903 computeMaxScrollY())) { 5904 invalidate(); 5905 } 5906 } 5907 // redraw in high-quality, as we're done dragging 5908 mHeldMotionless = MOTIONLESS_TRUE; 5909 invalidate(); 5910 // fall through 5911 case TOUCH_DRAG_START_MODE: 5912 // TOUCH_DRAG_START_MODE should not happen for the real 5913 // device as we almost certain will get a MOVE. But this 5914 // is possible on emulator. 5915 mLastVelocity = 0; 5916 WebViewCore.resumePriority(); 5917 if (!mSelectingText) { 5918 WebViewCore.resumeUpdatePicture(mWebViewCore); 5919 } 5920 break; 5921 } 5922 stopTouch(); 5923 break; 5924 } 5925 case MotionEvent.ACTION_CANCEL: { 5926 if (mTouchMode == TOUCH_DRAG_MODE) { 5927 mScroller.springBack(mScrollX, mScrollY, 0, 5928 computeMaxScrollX(), 0, computeMaxScrollY()); 5929 invalidate(); 5930 } 5931 cancelWebCoreTouchEvent(contentX, contentY, false); 5932 cancelTouch(); 5933 break; 5934 } 5935 } 5936 return true; 5937 } 5938 5939 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 5940 TouchEventData ted = new TouchEventData(); 5941 ted.mAction = ev.getActionMasked(); 5942 final int count = ev.getPointerCount(); 5943 ted.mIds = new int[count]; 5944 ted.mPoints = new Point[count]; 5945 for (int c = 0; c < count; c++) { 5946 ted.mIds[c] = ev.getPointerId(c); 5947 int x = viewToContentX((int) ev.getX(c) + mScrollX); 5948 int y = viewToContentY((int) ev.getY(c) + mScrollY); 5949 ted.mPoints[c] = new Point(x, y); 5950 } 5951 ted.mMetaState = ev.getMetaState(); 5952 ted.mReprocess = true; 5953 ted.mMotionEvent = MotionEvent.obtain(ev); 5954 ted.mSequence = sequence; 5955 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5956 cancelLongPress(); 5957 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5958 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5959 } 5960 5961 private void handleMultiTouchInWebView(MotionEvent ev) { 5962 if (DebugFlags.WEB_VIEW) { 5963 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 5964 + " mTouchMode=" + mTouchMode 5965 + " numPointers=" + ev.getPointerCount() 5966 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 5967 } 5968 5969 final ScaleGestureDetector detector = 5970 mZoomManager.getMultiTouchGestureDetector(); 5971 5972 // A few apps use WebView but don't instantiate gesture detector. 5973 // We don't need to support multi touch for them. 5974 if (detector == null) return; 5975 5976 float x = ev.getX(); 5977 float y = ev.getY(); 5978 5979 detector.onTouchEvent(ev); 5980 5981 if (detector.isInProgress()) { 5982 if (DebugFlags.WEB_VIEW) { 5983 Log.v(LOGTAG, "detector is in progress"); 5984 } 5985 mLastTouchTime = ev.getEventTime(); 5986 x = detector.getFocusX(); 5987 y = detector.getFocusY(); 5988 5989 cancelLongPress(); 5990 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5991 if (!mZoomManager.supportsPanDuringZoom()) { 5992 return; 5993 } 5994 mTouchMode = TOUCH_DRAG_MODE; 5995 if (mVelocityTracker == null) { 5996 mVelocityTracker = VelocityTracker.obtain(); 5997 } 5998 } 5999 6000 int action = ev.getActionMasked(); 6001 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6002 cancelTouch(); 6003 action = MotionEvent.ACTION_DOWN; 6004 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() == 2) { 6005 // set mLastTouchX/Y to the remaining point 6006 mLastTouchX = Math.round(x); 6007 mLastTouchY = Math.round(y); 6008 } else if (action == MotionEvent.ACTION_MOVE) { 6009 // negative x or y indicate it is on the edge, skip it. 6010 if (x < 0 || y < 0) { 6011 return; 6012 } 6013 } 6014 6015 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6016 } 6017 6018 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6019 if (shouldForwardTouchEvent()) { 6020 if (removeEvents) { 6021 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6022 } 6023 TouchEventData ted = new TouchEventData(); 6024 ted.mIds = new int[1]; 6025 ted.mIds[0] = 0; 6026 ted.mPoints = new Point[1]; 6027 ted.mPoints[0] = new Point(x, y); 6028 ted.mAction = MotionEvent.ACTION_CANCEL; 6029 ted.mNativeLayer = nativeScrollableLayer( 6030 x, y, ted.mNativeLayerRect, null); 6031 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6032 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6033 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6034 } 6035 } 6036 6037 private void startTouch(float x, float y, long eventTime) { 6038 // Remember where the motion event started 6039 mLastTouchX = Math.round(x); 6040 mLastTouchY = Math.round(y); 6041 mLastTouchTime = eventTime; 6042 mVelocityTracker = VelocityTracker.obtain(); 6043 mSnapScrollMode = SNAP_NONE; 6044 } 6045 6046 private void startDrag() { 6047 WebViewCore.reducePriority(); 6048 // to get better performance, pause updating the picture 6049 WebViewCore.pauseUpdatePicture(mWebViewCore); 6050 if (!mDragFromTextInput) { 6051 nativeHideCursor(); 6052 } 6053 6054 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6055 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6056 mZoomManager.invokeZoomPicker(); 6057 } 6058 } 6059 6060 private void doDrag(int deltaX, int deltaY) { 6061 if ((deltaX | deltaY) != 0) { 6062 int oldX = mScrollX; 6063 int oldY = mScrollY; 6064 int rangeX = computeMaxScrollX(); 6065 int rangeY = computeMaxScrollY(); 6066 int overscrollDistance = mOverscrollDistance; 6067 6068 // Check for the original scrolling layer in case we change 6069 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6070 // reached the edge of a layer but mScrollingLayer will be non-zero 6071 // if we initiated the drag on a layer. 6072 if (mScrollingLayer != 0) { 6073 final int contentX = viewToContentDimension(deltaX); 6074 final int contentY = viewToContentDimension(deltaY); 6075 6076 // Check the scrolling bounds to see if we will actually do any 6077 // scrolling. The rectangle is in document coordinates. 6078 final int maxX = mScrollingLayerRect.right; 6079 final int maxY = mScrollingLayerRect.bottom; 6080 final int resultX = Math.max(0, 6081 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6082 final int resultY = Math.max(0, 6083 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6084 6085 if (resultX != mScrollingLayerRect.left || 6086 resultY != mScrollingLayerRect.top) { 6087 // In case we switched to dragging the page. 6088 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6089 deltaX = contentX; 6090 deltaY = contentY; 6091 oldX = mScrollingLayerRect.left; 6092 oldY = mScrollingLayerRect.top; 6093 rangeX = maxX; 6094 rangeY = maxY; 6095 } else { 6096 // Scroll the main page if we are not going to scroll the 6097 // layer. This does not reset mScrollingLayer in case the 6098 // user changes directions and the layer can scroll the 6099 // other way. 6100 mTouchMode = TOUCH_DRAG_MODE; 6101 } 6102 } 6103 6104 if (mOverScrollGlow != null) { 6105 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6106 } 6107 6108 overScrollBy(deltaX, deltaY, oldX, oldY, 6109 rangeX, rangeY, 6110 mOverscrollDistance, mOverscrollDistance, true); 6111 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6112 invalidate(); 6113 } 6114 } 6115 mZoomManager.keepZoomPickerVisible(); 6116 } 6117 6118 private void stopTouch() { 6119 // we also use mVelocityTracker == null to tell us that we are 6120 // not "moving around", so we can take the slower/prettier 6121 // mode in the drawing code 6122 if (mVelocityTracker != null) { 6123 mVelocityTracker.recycle(); 6124 mVelocityTracker = null; 6125 } 6126 6127 // Release any pulled glows 6128 if (mOverScrollGlow != null) { 6129 mOverScrollGlow.releaseAll(); 6130 } 6131 } 6132 6133 private void cancelTouch() { 6134 // we also use mVelocityTracker == null to tell us that we are 6135 // not "moving around", so we can take the slower/prettier 6136 // mode in the drawing code 6137 if (mVelocityTracker != null) { 6138 mVelocityTracker.recycle(); 6139 mVelocityTracker = null; 6140 } 6141 6142 if ((mTouchMode == TOUCH_DRAG_MODE 6143 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6144 WebViewCore.resumePriority(); 6145 WebViewCore.resumeUpdatePicture(mWebViewCore); 6146 } 6147 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6148 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6149 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6150 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6151 if (getSettings().supportTouchOnly()) { 6152 removeTouchHighlight(true); 6153 } 6154 mHeldMotionless = MOTIONLESS_TRUE; 6155 mTouchMode = TOUCH_DONE_MODE; 6156 nativeHideCursor(); 6157 } 6158 6159 @Override 6160 public boolean onGenericMotionEvent(MotionEvent event) { 6161 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 6162 switch (event.getAction()) { 6163 case MotionEvent.ACTION_SCROLL: { 6164 final float vscroll; 6165 final float hscroll; 6166 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 6167 vscroll = 0; 6168 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6169 } else { 6170 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6171 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 6172 } 6173 if (hscroll != 0 || vscroll != 0) { 6174 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 6175 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 6176 if (pinScrollBy(hdelta, vdelta, true, 0)) { 6177 return true; 6178 } 6179 } 6180 } 6181 } 6182 } 6183 return super.onGenericMotionEvent(event); 6184 } 6185 6186 private long mTrackballFirstTime = 0; 6187 private long mTrackballLastTime = 0; 6188 private float mTrackballRemainsX = 0.0f; 6189 private float mTrackballRemainsY = 0.0f; 6190 private int mTrackballXMove = 0; 6191 private int mTrackballYMove = 0; 6192 private boolean mSelectingText = false; 6193 private boolean mSelectionStarted = false; 6194 private boolean mExtendSelection = false; 6195 private boolean mDrawSelectionPointer = false; 6196 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6197 private static final int TRACKBALL_TIMEOUT = 200; 6198 private static final int TRACKBALL_WAIT = 100; 6199 private static final int TRACKBALL_SCALE = 400; 6200 private static final int TRACKBALL_SCROLL_COUNT = 5; 6201 private static final int TRACKBALL_MOVE_COUNT = 10; 6202 private static final int TRACKBALL_MULTIPLIER = 3; 6203 private static final int SELECT_CURSOR_OFFSET = 16; 6204 private static final int SELECT_SCROLL = 5; 6205 private int mSelectX = 0; 6206 private int mSelectY = 0; 6207 private boolean mFocusSizeChanged = false; 6208 private boolean mTrackballDown = false; 6209 private long mTrackballUpTime = 0; 6210 private long mLastCursorTime = 0; 6211 private Rect mLastCursorBounds; 6212 6213 // Set by default; BrowserActivity clears to interpret trackball data 6214 // directly for movement. Currently, the framework only passes 6215 // arrow key events, not trackball events, from one child to the next 6216 private boolean mMapTrackballToArrowKeys = true; 6217 6218 public void setMapTrackballToArrowKeys(boolean setMap) { 6219 mMapTrackballToArrowKeys = setMap; 6220 } 6221 6222 void resetTrackballTime() { 6223 mTrackballLastTime = 0; 6224 } 6225 6226 @Override 6227 public boolean onTrackballEvent(MotionEvent ev) { 6228 long time = ev.getEventTime(); 6229 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6230 if (ev.getY() > 0) pageDown(true); 6231 if (ev.getY() < 0) pageUp(true); 6232 return true; 6233 } 6234 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6235 if (mSelectingText) { 6236 return true; // discard press if copy in progress 6237 } 6238 mTrackballDown = true; 6239 if (mNativeClass == 0) { 6240 return false; 6241 } 6242 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 6243 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6244 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6245 nativeSelectBestAt(mLastCursorBounds); 6246 } 6247 if (DebugFlags.WEB_VIEW) { 6248 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6249 + " time=" + time 6250 + " mLastCursorTime=" + mLastCursorTime); 6251 } 6252 if (isInTouchMode()) requestFocusFromTouch(); 6253 return false; // let common code in onKeyDown at it 6254 } 6255 if (ev.getAction() == MotionEvent.ACTION_UP) { 6256 // LONG_PRESS_CENTER is set in common onKeyDown 6257 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6258 mTrackballDown = false; 6259 mTrackballUpTime = time; 6260 if (mSelectingText) { 6261 if (mExtendSelection) { 6262 copySelection(); 6263 selectionDone(); 6264 } else { 6265 mExtendSelection = true; 6266 nativeSetExtendSelection(); 6267 invalidate(); // draw the i-beam instead of the arrow 6268 } 6269 return true; // discard press if copy in progress 6270 } 6271 if (DebugFlags.WEB_VIEW) { 6272 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6273 + " time=" + time 6274 ); 6275 } 6276 return false; // let common code in onKeyUp at it 6277 } 6278 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6279 AccessibilityManager.getInstance(mContext).isEnabled()) { 6280 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6281 return false; 6282 } 6283 if (mTrackballDown) { 6284 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6285 return true; // discard move if trackball is down 6286 } 6287 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6288 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6289 return true; 6290 } 6291 // TODO: alternatively we can do panning as touch does 6292 switchOutDrawHistory(); 6293 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6294 if (DebugFlags.WEB_VIEW) { 6295 Log.v(LOGTAG, "onTrackballEvent time=" 6296 + time + " last=" + mTrackballLastTime); 6297 } 6298 mTrackballFirstTime = time; 6299 mTrackballXMove = mTrackballYMove = 0; 6300 } 6301 mTrackballLastTime = time; 6302 if (DebugFlags.WEB_VIEW) { 6303 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6304 } 6305 mTrackballRemainsX += ev.getX(); 6306 mTrackballRemainsY += ev.getY(); 6307 doTrackball(time, ev.getMetaState()); 6308 return true; 6309 } 6310 6311 void moveSelection(float xRate, float yRate) { 6312 if (mNativeClass == 0) 6313 return; 6314 int width = getViewWidth(); 6315 int height = getViewHeight(); 6316 mSelectX += xRate; 6317 mSelectY += yRate; 6318 int maxX = width + mScrollX; 6319 int maxY = height + mScrollY; 6320 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6321 , mSelectX)); 6322 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6323 , mSelectY)); 6324 if (DebugFlags.WEB_VIEW) { 6325 Log.v(LOGTAG, "moveSelection" 6326 + " mSelectX=" + mSelectX 6327 + " mSelectY=" + mSelectY 6328 + " mScrollX=" + mScrollX 6329 + " mScrollY=" + mScrollY 6330 + " xRate=" + xRate 6331 + " yRate=" + yRate 6332 ); 6333 } 6334 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6335 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6336 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6337 : 0; 6338 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6339 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6340 : 0; 6341 pinScrollBy(scrollX, scrollY, true, 0); 6342 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6343 requestRectangleOnScreen(select); 6344 invalidate(); 6345 } 6346 6347 private int scaleTrackballX(float xRate, int width) { 6348 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6349 int nextXMove = xMove; 6350 if (xMove > 0) { 6351 if (xMove > mTrackballXMove) { 6352 xMove -= mTrackballXMove; 6353 } 6354 } else if (xMove < mTrackballXMove) { 6355 xMove -= mTrackballXMove; 6356 } 6357 mTrackballXMove = nextXMove; 6358 return xMove; 6359 } 6360 6361 private int scaleTrackballY(float yRate, int height) { 6362 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6363 int nextYMove = yMove; 6364 if (yMove > 0) { 6365 if (yMove > mTrackballYMove) { 6366 yMove -= mTrackballYMove; 6367 } 6368 } else if (yMove < mTrackballYMove) { 6369 yMove -= mTrackballYMove; 6370 } 6371 mTrackballYMove = nextYMove; 6372 return yMove; 6373 } 6374 6375 private int keyCodeToSoundsEffect(int keyCode) { 6376 switch(keyCode) { 6377 case KeyEvent.KEYCODE_DPAD_UP: 6378 return SoundEffectConstants.NAVIGATION_UP; 6379 case KeyEvent.KEYCODE_DPAD_RIGHT: 6380 return SoundEffectConstants.NAVIGATION_RIGHT; 6381 case KeyEvent.KEYCODE_DPAD_DOWN: 6382 return SoundEffectConstants.NAVIGATION_DOWN; 6383 case KeyEvent.KEYCODE_DPAD_LEFT: 6384 return SoundEffectConstants.NAVIGATION_LEFT; 6385 } 6386 throw new IllegalArgumentException("keyCode must be one of " + 6387 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6388 "KEYCODE_DPAD_LEFT}."); 6389 } 6390 6391 private void doTrackball(long time, int metaState) { 6392 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6393 if (elapsed == 0) { 6394 elapsed = TRACKBALL_TIMEOUT; 6395 } 6396 float xRate = mTrackballRemainsX * 1000 / elapsed; 6397 float yRate = mTrackballRemainsY * 1000 / elapsed; 6398 int viewWidth = getViewWidth(); 6399 int viewHeight = getViewHeight(); 6400 if (mSelectingText) { 6401 if (!mDrawSelectionPointer) { 6402 // The last selection was made by touch, disabling drawing the 6403 // selection pointer. Allow the trackball to adjust the 6404 // position of the touch control. 6405 mSelectX = contentToViewX(nativeSelectionX()); 6406 mSelectY = contentToViewY(nativeSelectionY()); 6407 mDrawSelectionPointer = mExtendSelection = true; 6408 nativeSetExtendSelection(); 6409 } 6410 moveSelection(scaleTrackballX(xRate, viewWidth), 6411 scaleTrackballY(yRate, viewHeight)); 6412 mTrackballRemainsX = mTrackballRemainsY = 0; 6413 return; 6414 } 6415 float ax = Math.abs(xRate); 6416 float ay = Math.abs(yRate); 6417 float maxA = Math.max(ax, ay); 6418 if (DebugFlags.WEB_VIEW) { 6419 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6420 + " xRate=" + xRate 6421 + " yRate=" + yRate 6422 + " mTrackballRemainsX=" + mTrackballRemainsX 6423 + " mTrackballRemainsY=" + mTrackballRemainsY); 6424 } 6425 int width = mContentWidth - viewWidth; 6426 int height = mContentHeight - viewHeight; 6427 if (width < 0) width = 0; 6428 if (height < 0) height = 0; 6429 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6430 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6431 maxA = Math.max(ax, ay); 6432 int count = Math.max(0, (int) maxA); 6433 int oldScrollX = mScrollX; 6434 int oldScrollY = mScrollY; 6435 if (count > 0) { 6436 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6437 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6438 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6439 KeyEvent.KEYCODE_DPAD_RIGHT; 6440 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6441 if (DebugFlags.WEB_VIEW) { 6442 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6443 + " count=" + count 6444 + " mTrackballRemainsX=" + mTrackballRemainsX 6445 + " mTrackballRemainsY=" + mTrackballRemainsY); 6446 } 6447 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6448 for (int i = 0; i < count; i++) { 6449 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6450 } 6451 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6452 } else if (navHandledKey(selectKeyCode, count, false, time)) { 6453 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 6454 } 6455 mTrackballRemainsX = mTrackballRemainsY = 0; 6456 } 6457 if (count >= TRACKBALL_SCROLL_COUNT) { 6458 int xMove = scaleTrackballX(xRate, width); 6459 int yMove = scaleTrackballY(yRate, height); 6460 if (DebugFlags.WEB_VIEW) { 6461 Log.v(LOGTAG, "doTrackball pinScrollBy" 6462 + " count=" + count 6463 + " xMove=" + xMove + " yMove=" + yMove 6464 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 6465 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 6466 ); 6467 } 6468 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 6469 xMove = 0; 6470 } 6471 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 6472 yMove = 0; 6473 } 6474 if (xMove != 0 || yMove != 0) { 6475 pinScrollBy(xMove, yMove, true, 0); 6476 } 6477 } 6478 } 6479 6480 /** 6481 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 6482 * @return Maximum horizontal scroll position within real content 6483 */ 6484 int computeMaxScrollX() { 6485 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 6486 } 6487 6488 /** 6489 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 6490 * @return Maximum vertical scroll position within real content 6491 */ 6492 int computeMaxScrollY() { 6493 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 6494 - getViewHeightWithTitle(), 0); 6495 } 6496 6497 boolean updateScrollCoordinates(int x, int y) { 6498 int oldX = mScrollX; 6499 int oldY = mScrollY; 6500 mScrollX = x; 6501 mScrollY = y; 6502 if (oldX != mScrollX || oldY != mScrollY) { 6503 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 6504 return true; 6505 } else { 6506 return false; 6507 } 6508 } 6509 6510 public void flingScroll(int vx, int vy) { 6511 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 6512 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 6513 invalidate(); 6514 } 6515 6516 private void doFling() { 6517 if (mVelocityTracker == null) { 6518 return; 6519 } 6520 int maxX = computeMaxScrollX(); 6521 int maxY = computeMaxScrollY(); 6522 6523 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 6524 int vx = (int) mVelocityTracker.getXVelocity(); 6525 int vy = (int) mVelocityTracker.getYVelocity(); 6526 6527 int scrollX = mScrollX; 6528 int scrollY = mScrollY; 6529 int overscrollDistance = mOverscrollDistance; 6530 int overflingDistance = mOverflingDistance; 6531 6532 // Use the layer's scroll data if applicable. 6533 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 6534 scrollX = mScrollingLayerRect.left; 6535 scrollY = mScrollingLayerRect.top; 6536 maxX = mScrollingLayerRect.right; 6537 maxY = mScrollingLayerRect.bottom; 6538 // No overscrolling for layers. 6539 overscrollDistance = overflingDistance = 0; 6540 } 6541 6542 if (mSnapScrollMode != SNAP_NONE) { 6543 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6544 vy = 0; 6545 } else { 6546 vx = 0; 6547 } 6548 } 6549 if (true /* EMG release: make our fling more like Maps' */) { 6550 // maps cuts their velocity in half 6551 vx = vx * 3 / 4; 6552 vy = vy * 3 / 4; 6553 } 6554 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6555 WebViewCore.resumePriority(); 6556 if (!mSelectingText) { 6557 WebViewCore.resumeUpdatePicture(mWebViewCore); 6558 } 6559 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 6560 invalidate(); 6561 } 6562 return; 6563 } 6564 float currentVelocity = mScroller.getCurrVelocity(); 6565 float velocity = (float) Math.hypot(vx, vy); 6566 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6567 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6568 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6569 - Math.atan2(vy, vx))); 6570 final float circle = (float) (Math.PI) * 2.0f; 6571 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6572 vx += currentVelocity * mLastVelX / mLastVelocity; 6573 vy += currentVelocity * mLastVelY / mLastVelocity; 6574 velocity = (float) Math.hypot(vx, vy); 6575 if (DebugFlags.WEB_VIEW) { 6576 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6577 } 6578 } else if (DebugFlags.WEB_VIEW) { 6579 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6580 } 6581 } else if (DebugFlags.WEB_VIEW) { 6582 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6583 + " current=" + currentVelocity 6584 + " vx=" + vx + " vy=" + vy 6585 + " maxX=" + maxX + " maxY=" + maxY 6586 + " scrollX=" + scrollX + " scrollY=" + scrollY 6587 + " layer=" + mScrollingLayer); 6588 } 6589 6590 // Allow sloppy flings without overscrolling at the edges. 6591 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6592 vx = 0; 6593 } 6594 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6595 vy = 0; 6596 } 6597 6598 if (overscrollDistance < overflingDistance) { 6599 if ((vx > 0 && scrollX == -overscrollDistance) || 6600 (vx < 0 && scrollX == maxX + overscrollDistance)) { 6601 vx = 0; 6602 } 6603 if ((vy > 0 && scrollY == -overscrollDistance) || 6604 (vy < 0 && scrollY == maxY + overscrollDistance)) { 6605 vy = 0; 6606 } 6607 } 6608 6609 mLastVelX = vx; 6610 mLastVelY = vy; 6611 mLastVelocity = velocity; 6612 6613 // no horizontal overscroll if the content just fits 6614 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 6615 maxX == 0 ? 0 : overflingDistance, overflingDistance); 6616 // Duration is calculated based on velocity. With range boundaries and overscroll 6617 // we may not know how long the final animation will take. (Hence the deprecation 6618 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6619 // resumes during this effect we will take a performance hit. See computeScroll; 6620 // we resume webcore there when the animation is finished. 6621 final int time = mScroller.getDuration(); 6622 6623 // Suppress scrollbars for layer scrolling. 6624 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6625 awakenScrollBars(time); 6626 } 6627 6628 invalidate(); 6629 } 6630 6631 /** 6632 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6633 * in charge of installing this view to the view hierarchy. This view will 6634 * become visible when the user starts scrolling via touch and fade away if 6635 * the user does not interact with it. 6636 * <p/> 6637 * API version 3 introduces a built-in zoom mechanism that is shown 6638 * automatically by the MapView. This is the preferred approach for 6639 * showing the zoom UI. 6640 * 6641 * @deprecated The built-in zoom mechanism is preferred, see 6642 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6643 */ 6644 @Deprecated 6645 public View getZoomControls() { 6646 if (!getSettings().supportZoom()) { 6647 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6648 return null; 6649 } 6650 return mZoomManager.getExternalZoomPicker(); 6651 } 6652 6653 void dismissZoomControl() { 6654 mZoomManager.dismissZoomPicker(); 6655 } 6656 6657 float getDefaultZoomScale() { 6658 return mZoomManager.getDefaultScale(); 6659 } 6660 6661 /** 6662 * @return TRUE if the WebView can be zoomed in. 6663 */ 6664 public boolean canZoomIn() { 6665 return mZoomManager.canZoomIn(); 6666 } 6667 6668 /** 6669 * @return TRUE if the WebView can be zoomed out. 6670 */ 6671 public boolean canZoomOut() { 6672 return mZoomManager.canZoomOut(); 6673 } 6674 6675 /** 6676 * Perform zoom in in the webview 6677 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6678 */ 6679 public boolean zoomIn() { 6680 return mZoomManager.zoomIn(); 6681 } 6682 6683 /** 6684 * Perform zoom out in the webview 6685 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6686 */ 6687 public boolean zoomOut() { 6688 return mZoomManager.zoomOut(); 6689 } 6690 6691 private void updateSelection() { 6692 if (mNativeClass == 0) { 6693 return; 6694 } 6695 // mLastTouchX and mLastTouchY are the point in the current viewport 6696 int contentX = viewToContentX(mLastTouchX + mScrollX); 6697 int contentY = viewToContentY(mLastTouchY + mScrollY); 6698 int slop = viewToContentDimension(mNavSlop); 6699 Rect rect = new Rect(contentX - slop, contentY - slop, 6700 contentX + slop, contentY + slop); 6701 nativeSelectBestAt(rect); 6702 mInitialHitTestResult = hitTestResult(null); 6703 } 6704 6705 /** 6706 * Scroll the focused text field to match the WebTextView 6707 * @param xPercent New x position of the WebTextView from 0 to 1. 6708 */ 6709 /*package*/ void scrollFocusedTextInputX(float xPercent) { 6710 if (!inEditingMode() || mWebViewCore == null) { 6711 return; 6712 } 6713 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 6714 new Float(xPercent)); 6715 } 6716 6717 /** 6718 * Scroll the focused textarea vertically to match the WebTextView 6719 * @param y New y position of the WebTextView in view coordinates 6720 */ 6721 /* package */ void scrollFocusedTextInputY(int y) { 6722 if (!inEditingMode() || mWebViewCore == null) { 6723 return; 6724 } 6725 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 6726 } 6727 6728 /** 6729 * Set our starting point and time for a drag from the WebTextView. 6730 */ 6731 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6732 if (!inEditingMode()) { 6733 return; 6734 } 6735 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 6736 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 6737 mLastTouchTime = eventTime; 6738 if (!mScroller.isFinished()) { 6739 abortAnimation(); 6740 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6741 } 6742 mSnapScrollMode = SNAP_NONE; 6743 mVelocityTracker = VelocityTracker.obtain(); 6744 mTouchMode = TOUCH_DRAG_START_MODE; 6745 } 6746 6747 /** 6748 * Given a motion event from the WebTextView, set its location to our 6749 * coordinates, and handle the event. 6750 */ 6751 /*package*/ boolean textFieldDrag(MotionEvent event) { 6752 if (!inEditingMode()) { 6753 return false; 6754 } 6755 mDragFromTextInput = true; 6756 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6757 (float) (mWebTextView.getTop() - mScrollY)); 6758 boolean result = onTouchEvent(event); 6759 mDragFromTextInput = false; 6760 return result; 6761 } 6762 6763 /** 6764 * Due a touch up from a WebTextView. This will be handled by webkit to 6765 * change the selection. 6766 * @param event MotionEvent in the WebTextView's coordinates. 6767 */ 6768 /*package*/ void touchUpOnTextField(MotionEvent event) { 6769 if (!inEditingMode()) { 6770 return; 6771 } 6772 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6773 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6774 int slop = viewToContentDimension(mNavSlop); 6775 nativeMotionUp(x, y, slop); 6776 } 6777 6778 /** 6779 * Called when pressing the center key or trackball on a textfield. 6780 */ 6781 /*package*/ void centerKeyPressOnTextField() { 6782 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6783 nativeCursorNodePointer()); 6784 } 6785 6786 private void doShortPress() { 6787 if (mNativeClass == 0) { 6788 return; 6789 } 6790 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6791 return; 6792 } 6793 mTouchMode = TOUCH_DONE_MODE; 6794 switchOutDrawHistory(); 6795 // mLastTouchX and mLastTouchY are the point in the current viewport 6796 int contentX = viewToContentX(mLastTouchX + mScrollX); 6797 int contentY = viewToContentY(mLastTouchY + mScrollY); 6798 int slop = viewToContentDimension(mNavSlop); 6799 if (getSettings().supportTouchOnly()) { 6800 removeTouchHighlight(false); 6801 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6802 // use "0" as generation id to inform WebKit to use the same x/y as 6803 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 6804 touchUpData.mMoveGeneration = 0; 6805 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6806 } else if (nativePointInNavCache(contentX, contentY, slop)) { 6807 WebViewCore.MotionUpData motionUpData = new WebViewCore 6808 .MotionUpData(); 6809 motionUpData.mFrame = nativeCacheHitFramePointer(); 6810 motionUpData.mNode = nativeCacheHitNodePointer(); 6811 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6812 motionUpData.mX = contentX; 6813 motionUpData.mY = contentY; 6814 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6815 motionUpData); 6816 } else { 6817 doMotionUp(contentX, contentY); 6818 } 6819 } 6820 6821 private void doMotionUp(int contentX, int contentY) { 6822 int slop = viewToContentDimension(mNavSlop); 6823 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 6824 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6825 } 6826 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6827 playSoundEffect(SoundEffectConstants.CLICK); 6828 } 6829 } 6830 6831 /** 6832 * Returns plugin bounds if x/y in content coordinates corresponds to a 6833 * plugin. Otherwise a NULL rectangle is returned. 6834 */ 6835 Rect getPluginBounds(int x, int y) { 6836 int slop = viewToContentDimension(mNavSlop); 6837 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 6838 return nativeCacheHitNodeBounds(); 6839 } else { 6840 return null; 6841 } 6842 } 6843 6844 /* 6845 * Return true if the rect (e.g. plugin) is fully visible and maximized 6846 * inside the WebView. 6847 */ 6848 boolean isRectFitOnScreen(Rect rect) { 6849 final int rectWidth = rect.width(); 6850 final int rectHeight = rect.height(); 6851 final int viewWidth = getViewWidth(); 6852 final int viewHeight = getViewHeightWithTitle(); 6853 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 6854 scale = mZoomManager.computeScaleWithLimits(scale); 6855 return !mZoomManager.willScaleTriggerZoom(scale) 6856 && contentToViewX(rect.left) >= mScrollX 6857 && contentToViewX(rect.right) <= mScrollX + viewWidth 6858 && contentToViewY(rect.top) >= mScrollY 6859 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 6860 } 6861 6862 /* 6863 * Maximize and center the rectangle, specified in the document coordinate 6864 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6865 * animated scroll to center it. If the zoom needs to be changed, find the 6866 * zoom center and do a smooth zoom transition. The rect is in document 6867 * coordinates 6868 */ 6869 void centerFitRect(Rect rect) { 6870 final int rectWidth = rect.width(); 6871 final int rectHeight = rect.height(); 6872 final int viewWidth = getViewWidth(); 6873 final int viewHeight = getViewHeightWithTitle(); 6874 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 6875 / rectHeight); 6876 scale = mZoomManager.computeScaleWithLimits(scale); 6877 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6878 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 6879 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 6880 true, 0); 6881 } else { 6882 float actualScale = mZoomManager.getScale(); 6883 float oldScreenX = rect.left * actualScale - mScrollX; 6884 float rectViewX = rect.left * scale; 6885 float rectViewWidth = rectWidth * scale; 6886 float newMaxWidth = mContentWidth * scale; 6887 float newScreenX = (viewWidth - rectViewWidth) / 2; 6888 // pin the newX to the WebView 6889 if (newScreenX > rectViewX) { 6890 newScreenX = rectViewX; 6891 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6892 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6893 } 6894 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6895 / (scale - actualScale); 6896 float oldScreenY = rect.top * actualScale + getTitleHeight() 6897 - mScrollY; 6898 float rectViewY = rect.top * scale + getTitleHeight(); 6899 float rectViewHeight = rectHeight * scale; 6900 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6901 float newScreenY = (viewHeight - rectViewHeight) / 2; 6902 // pin the newY to the WebView 6903 if (newScreenY > rectViewY) { 6904 newScreenY = rectViewY; 6905 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6906 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6907 } 6908 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6909 / (scale - actualScale); 6910 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6911 mZoomManager.startZoomAnimation(scale, false); 6912 } 6913 } 6914 6915 // Called by JNI to handle a touch on a node representing an email address, 6916 // address, or phone number 6917 private void overrideLoading(String url) { 6918 mCallbackProxy.uiOverrideUrlLoading(url); 6919 } 6920 6921 @Override 6922 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6923 // FIXME: If a subwindow is showing find, and the user touches the 6924 // background window, it can steal focus. 6925 if (mFindIsUp) return false; 6926 boolean result = false; 6927 if (inEditingMode()) { 6928 result = mWebTextView.requestFocus(direction, 6929 previouslyFocusedRect); 6930 } else { 6931 result = super.requestFocus(direction, previouslyFocusedRect); 6932 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 6933 // For cases such as GMail, where we gain focus from a direction, 6934 // we want to move to the first available link. 6935 // FIXME: If there are no visible links, we may not want to 6936 int fakeKeyDirection = 0; 6937 switch(direction) { 6938 case View.FOCUS_UP: 6939 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6940 break; 6941 case View.FOCUS_DOWN: 6942 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6943 break; 6944 case View.FOCUS_LEFT: 6945 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6946 break; 6947 case View.FOCUS_RIGHT: 6948 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6949 break; 6950 default: 6951 return result; 6952 } 6953 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6954 navHandledKey(fakeKeyDirection, 1, true, 0); 6955 } 6956 } 6957 } 6958 return result; 6959 } 6960 6961 @Override 6962 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6963 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6964 6965 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6966 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6967 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6968 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6969 6970 int measuredHeight = heightSize; 6971 int measuredWidth = widthSize; 6972 6973 // Grab the content size from WebViewCore. 6974 int contentHeight = contentToViewDimension(mContentHeight); 6975 int contentWidth = contentToViewDimension(mContentWidth); 6976 6977// Log.d(LOGTAG, "------- measure " + heightMode); 6978 6979 if (heightMode != MeasureSpec.EXACTLY) { 6980 mHeightCanMeasure = true; 6981 measuredHeight = contentHeight; 6982 if (heightMode == MeasureSpec.AT_MOST) { 6983 // If we are larger than the AT_MOST height, then our height can 6984 // no longer be measured and we should scroll internally. 6985 if (measuredHeight > heightSize) { 6986 measuredHeight = heightSize; 6987 mHeightCanMeasure = false; 6988 } else if (measuredHeight < heightSize) { 6989 measuredHeight |= MEASURED_STATE_TOO_SMALL; 6990 } 6991 } 6992 } else { 6993 mHeightCanMeasure = false; 6994 } 6995 if (mNativeClass != 0) { 6996 nativeSetHeightCanMeasure(mHeightCanMeasure); 6997 } 6998 // For the width, always use the given size unless unspecified. 6999 if (widthMode == MeasureSpec.UNSPECIFIED) { 7000 mWidthCanMeasure = true; 7001 measuredWidth = contentWidth; 7002 } else { 7003 if (measuredWidth < contentWidth) { 7004 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7005 } 7006 mWidthCanMeasure = false; 7007 } 7008 7009 synchronized (this) { 7010 setMeasuredDimension(measuredWidth, measuredHeight); 7011 } 7012 } 7013 7014 @Override 7015 public boolean requestChildRectangleOnScreen(View child, 7016 Rect rect, 7017 boolean immediate) { 7018 if (mNativeClass == 0) { 7019 return false; 7020 } 7021 // don't scroll while in zoom animation. When it is done, we will adjust 7022 // the necessary components (e.g., WebTextView if it is in editing mode) 7023 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7024 return false; 7025 } 7026 7027 rect.offset(child.getLeft() - child.getScrollX(), 7028 child.getTop() - child.getScrollY()); 7029 7030 Rect content = new Rect(viewToContentX(mScrollX), 7031 viewToContentY(mScrollY), 7032 viewToContentX(mScrollX + getWidth() 7033 - getVerticalScrollbarWidth()), 7034 viewToContentY(mScrollY + getViewHeightWithTitle())); 7035 content = nativeSubtractLayers(content); 7036 int screenTop = contentToViewY(content.top); 7037 int screenBottom = contentToViewY(content.bottom); 7038 int height = screenBottom - screenTop; 7039 int scrollYDelta = 0; 7040 7041 if (rect.bottom > screenBottom) { 7042 int oneThirdOfScreenHeight = height / 3; 7043 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7044 // If the rectangle is too tall to fit in the bottom two thirds 7045 // of the screen, place it at the top. 7046 scrollYDelta = rect.top - screenTop; 7047 } else { 7048 // If the rectangle will still fit on screen, we want its 7049 // top to be in the top third of the screen. 7050 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7051 } 7052 } else if (rect.top < screenTop) { 7053 scrollYDelta = rect.top - screenTop; 7054 } 7055 7056 int screenLeft = contentToViewX(content.left); 7057 int screenRight = contentToViewX(content.right); 7058 int width = screenRight - screenLeft; 7059 int scrollXDelta = 0; 7060 7061 if (rect.right > screenRight && rect.left > screenLeft) { 7062 if (rect.width() > width) { 7063 scrollXDelta += (rect.left - screenLeft); 7064 } else { 7065 scrollXDelta += (rect.right - screenRight); 7066 } 7067 } else if (rect.left < screenLeft) { 7068 scrollXDelta -= (screenLeft - rect.left); 7069 } 7070 7071 if ((scrollYDelta | scrollXDelta) != 0) { 7072 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7073 } 7074 7075 return false; 7076 } 7077 7078 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7079 String replace, int newStart, int newEnd) { 7080 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7081 arg.mReplace = replace; 7082 arg.mNewStart = newStart; 7083 arg.mNewEnd = newEnd; 7084 mTextGeneration++; 7085 arg.mTextGeneration = mTextGeneration; 7086 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7087 } 7088 7089 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7090 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7091 arg.mEvent = event; 7092 arg.mCurrentText = currentText; 7093 // Increase our text generation number, and pass it to webcore thread 7094 mTextGeneration++; 7095 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7096 // WebKit's document state is not saved until about to leave the page. 7097 // To make sure the host application, like Browser, has the up to date 7098 // document state when it goes to background, we force to save the 7099 // document state. 7100 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7101 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7102 cursorData(), 1000); 7103 } 7104 7105 /* package */ synchronized WebViewCore getWebViewCore() { 7106 return mWebViewCore; 7107 } 7108 7109 /** 7110 * Used only by TouchEventQueue to store pending touch events. 7111 */ 7112 private static class QueuedTouch { 7113 long mSequence; 7114 MotionEvent mEvent; // Optional 7115 TouchEventData mTed; // Optional 7116 7117 QueuedTouch mNext; 7118 7119 public QueuedTouch set(TouchEventData ted) { 7120 mSequence = ted.mSequence; 7121 mTed = ted; 7122 mEvent = null; 7123 mNext = null; 7124 return this; 7125 } 7126 7127 public QueuedTouch set(MotionEvent ev, long sequence) { 7128 mEvent = MotionEvent.obtain(ev); 7129 mSequence = sequence; 7130 mTed = null; 7131 mNext = null; 7132 return this; 7133 } 7134 7135 public QueuedTouch add(QueuedTouch other) { 7136 if (other.mSequence < mSequence) { 7137 other.mNext = this; 7138 return other; 7139 } 7140 7141 QueuedTouch insertAt = this; 7142 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 7143 insertAt = insertAt.mNext; 7144 } 7145 other.mNext = insertAt.mNext; 7146 insertAt.mNext = other; 7147 return this; 7148 } 7149 } 7150 7151 /** 7152 * WebView handles touch events asynchronously since some events must be passed to WebKit 7153 * for potentially slower processing. TouchEventQueue serializes touch events regardless 7154 * of which path they take to ensure that no events are ever processed out of order 7155 * by WebView. 7156 */ 7157 private class TouchEventQueue { 7158 private long mNextTouchSequence = Long.MIN_VALUE + 1; 7159 private long mLastHandledTouchSequence = Long.MIN_VALUE; 7160 private QueuedTouch mTouchEventQueue; 7161 private QueuedTouch mQueuedTouchRecycleBin; 7162 private int mQueuedTouchRecycleCount; 7163 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 7164 7165 private QueuedTouch obtainQueuedTouch() { 7166 if (mQueuedTouchRecycleBin != null) { 7167 QueuedTouch result = mQueuedTouchRecycleBin; 7168 mQueuedTouchRecycleBin = result.mNext; 7169 mQueuedTouchRecycleCount--; 7170 return result; 7171 } 7172 return new QueuedTouch(); 7173 } 7174 7175 private void recycleQueuedTouch(QueuedTouch qd) { 7176 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 7177 qd.mNext = mQueuedTouchRecycleBin; 7178 mQueuedTouchRecycleBin = qd; 7179 mQueuedTouchRecycleCount++; 7180 } 7181 } 7182 7183 /** 7184 * Reset the touch event queue. This will dump any pending events 7185 * and reset the sequence numbering. 7186 */ 7187 public void reset() { 7188 mNextTouchSequence = Long.MIN_VALUE + 1; 7189 mLastHandledTouchSequence = Long.MIN_VALUE; 7190 while (mTouchEventQueue != null) { 7191 QueuedTouch recycleMe = mTouchEventQueue; 7192 mTouchEventQueue = mTouchEventQueue.mNext; 7193 recycleQueuedTouch(recycleMe); 7194 } 7195 } 7196 7197 /** 7198 * Return the next valid sequence number for tagging incoming touch events. 7199 * @return The next touch event sequence number 7200 */ 7201 public long nextTouchSequence() { 7202 return mNextTouchSequence++; 7203 } 7204 7205 /** 7206 * Enqueue a touch event in the form of TouchEventData. 7207 * The sequence number will be read from the mSequence field of the argument. 7208 * 7209 * If the touch event's sequence number is the next in line to be processed, it will 7210 * be handled before this method returns. Any subsequent events that have already 7211 * been queued will also be processed in their proper order. 7212 * 7213 * @param ted Touch data to be processed in order. 7214 */ 7215 public void enqueueTouchEvent(TouchEventData ted) { 7216 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 7217 handleQueuedTouchEventData(ted); 7218 7219 mLastHandledTouchSequence++; 7220 7221 // Do we have any more? Run them if so. 7222 QueuedTouch qd = mTouchEventQueue; 7223 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7224 handleQueuedTouch(qd); 7225 QueuedTouch recycleMe = qd; 7226 qd = qd.mNext; 7227 recycleQueuedTouch(recycleMe); 7228 mLastHandledTouchSequence++; 7229 } 7230 mTouchEventQueue = qd; 7231 } else { 7232 QueuedTouch qd = obtainQueuedTouch().set(ted); 7233 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7234 } 7235 } 7236 7237 /** 7238 * Enqueue a touch event in the form of a MotionEvent from the framework. 7239 * 7240 * If the touch event's sequence number is the next in line to be processed, it will 7241 * be handled before this method returns. Any subsequent events that have already 7242 * been queued will also be processed in their proper order. 7243 * 7244 * @param ev MotionEvent to be processed in order 7245 */ 7246 public void enqueueTouchEvent(MotionEvent ev) { 7247 final long sequence = nextTouchSequence(); 7248 if (mLastHandledTouchSequence + 1 == sequence) { 7249 handleQueuedMotionEvent(ev); 7250 7251 mLastHandledTouchSequence++; 7252 7253 // Do we have any more? Run them if so. 7254 QueuedTouch qd = mTouchEventQueue; 7255 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7256 handleQueuedTouch(qd); 7257 QueuedTouch recycleMe = qd; 7258 qd = qd.mNext; 7259 recycleQueuedTouch(recycleMe); 7260 mLastHandledTouchSequence++; 7261 } 7262 mTouchEventQueue = qd; 7263 } else { 7264 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 7265 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7266 } 7267 } 7268 7269 private void handleQueuedTouch(QueuedTouch qt) { 7270 if (qt.mTed != null) { 7271 handleQueuedTouchEventData(qt.mTed); 7272 } else { 7273 handleQueuedMotionEvent(qt.mEvent); 7274 qt.mEvent.recycle(); 7275 } 7276 } 7277 7278 private void handleQueuedMotionEvent(MotionEvent ev) { 7279 int action = ev.getActionMasked(); 7280 if (ev.getPointerCount() > 1) { // Multi-touch 7281 handleMultiTouchInWebView(ev); 7282 } else { 7283 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 7284 if (detector != null) { 7285 // ScaleGestureDetector needs a consistent event stream to operate properly. 7286 // It won't take any action with fewer than two pointers, but it needs to 7287 // update internal bookkeeping state. 7288 detector.onTouchEvent(ev); 7289 } 7290 7291 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 7292 } 7293 } 7294 7295 private void handleQueuedTouchEventData(TouchEventData ted) { 7296 if (!ted.mReprocess) { 7297 if (ted.mAction == MotionEvent.ACTION_DOWN 7298 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7299 // if prevent default is called from WebCore, UI 7300 // will not handle the rest of the touch events any 7301 // more. 7302 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 7303 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7304 } else if (ted.mAction == MotionEvent.ACTION_MOVE 7305 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7306 // the return for the first ACTION_MOVE will decide 7307 // whether UI will handle touch or not. Currently no 7308 // support for alternating prevent default 7309 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 7310 : PREVENT_DEFAULT_NO; 7311 } 7312 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7313 mTouchHighlightRegion.setEmpty(); 7314 } 7315 } else { 7316 if (ted.mPoints.length > 1) { // multi-touch 7317 if (ted.mAction == MotionEvent.ACTION_POINTER_UP && 7318 ted.mMotionEvent.getPointerCount() == 2) { 7319 } 7320 if (!ted.mNativeResult) { 7321 mPreventDefault = PREVENT_DEFAULT_NO; 7322 handleMultiTouchInWebView(ted.mMotionEvent); 7323 } else { 7324 mPreventDefault = PREVENT_DEFAULT_YES; 7325 } 7326 return; 7327 } 7328 7329 // prevent default is not called in WebCore, so the 7330 // message needs to be reprocessed in UI 7331 if (!ted.mNativeResult) { 7332 // Following is for single touch. 7333 switch (ted.mAction) { 7334 case MotionEvent.ACTION_DOWN: 7335 mLastDeferTouchX = contentToViewX(ted.mPoints[0].x) 7336 - mScrollX; 7337 mLastDeferTouchY = contentToViewY(ted.mPoints[0].y) 7338 - mScrollY; 7339 mDeferTouchMode = TOUCH_INIT_MODE; 7340 break; 7341 case MotionEvent.ACTION_MOVE: { 7342 // no snapping in defer process 7343 int x = contentToViewX(ted.mPoints[0].x) - mScrollX; 7344 int y = contentToViewY(ted.mPoints[0].y) - mScrollY; 7345 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7346 mDeferTouchMode = TOUCH_DRAG_MODE; 7347 mLastDeferTouchX = x; 7348 mLastDeferTouchY = y; 7349 startScrollingLayer(x, y); 7350 startDrag(); 7351 } 7352 int deltaX = pinLocX((int) (mScrollX 7353 + mLastDeferTouchX - x)) 7354 - mScrollX; 7355 int deltaY = pinLocY((int) (mScrollY 7356 + mLastDeferTouchY - y)) 7357 - mScrollY; 7358 doDrag(deltaX, deltaY); 7359 if (deltaX != 0) mLastDeferTouchX = x; 7360 if (deltaY != 0) mLastDeferTouchY = y; 7361 break; 7362 } 7363 case MotionEvent.ACTION_UP: 7364 case MotionEvent.ACTION_CANCEL: 7365 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7366 // no fling in defer process 7367 mScroller.springBack(mScrollX, mScrollY, 0, 7368 computeMaxScrollX(), 0, 7369 computeMaxScrollY()); 7370 invalidate(); 7371 WebViewCore.resumePriority(); 7372 WebViewCore.resumeUpdatePicture(mWebViewCore); 7373 } 7374 mDeferTouchMode = TOUCH_DONE_MODE; 7375 break; 7376 case WebViewCore.ACTION_DOUBLETAP: 7377 // doDoubleTap() needs mLastTouchX/Y as anchor 7378 mLastTouchX = contentToViewX(ted.mPoints[0].x) - mScrollX; 7379 mLastTouchY = contentToViewY(ted.mPoints[0].y) - mScrollY; 7380 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 7381 mDeferTouchMode = TOUCH_DONE_MODE; 7382 break; 7383 case WebViewCore.ACTION_LONGPRESS: 7384 HitTestResult hitTest = getHitTestResult(); 7385 if (hitTest != null && hitTest.mType 7386 != HitTestResult.UNKNOWN_TYPE) { 7387 performLongClick(); 7388 } 7389 mDeferTouchMode = TOUCH_DONE_MODE; 7390 break; 7391 } 7392 } 7393 } 7394 } 7395 } 7396 7397 //------------------------------------------------------------------------- 7398 // Methods can be called from a separate thread, like WebViewCore 7399 // If it needs to call the View system, it has to send message. 7400 //------------------------------------------------------------------------- 7401 7402 /** 7403 * General handler to receive message coming from webkit thread 7404 */ 7405 class PrivateHandler extends Handler { 7406 @Override 7407 public void handleMessage(Message msg) { 7408 // exclude INVAL_RECT_MSG_ID since it is frequently output 7409 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 7410 if (msg.what >= FIRST_PRIVATE_MSG_ID 7411 && msg.what <= LAST_PRIVATE_MSG_ID) { 7412 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 7413 - FIRST_PRIVATE_MSG_ID]); 7414 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 7415 && msg.what <= LAST_PACKAGE_MSG_ID) { 7416 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 7417 - FIRST_PACKAGE_MSG_ID]); 7418 } else { 7419 Log.v(LOGTAG, Integer.toString(msg.what)); 7420 } 7421 } 7422 if (mWebViewCore == null) { 7423 // after WebView's destroy() is called, skip handling messages. 7424 return; 7425 } 7426 switch (msg.what) { 7427 case REMEMBER_PASSWORD: { 7428 mDatabase.setUsernamePassword( 7429 msg.getData().getString("host"), 7430 msg.getData().getString("username"), 7431 msg.getData().getString("password")); 7432 ((Message) msg.obj).sendToTarget(); 7433 break; 7434 } 7435 case NEVER_REMEMBER_PASSWORD: { 7436 mDatabase.setUsernamePassword( 7437 msg.getData().getString("host"), null, null); 7438 ((Message) msg.obj).sendToTarget(); 7439 break; 7440 } 7441 case PREVENT_DEFAULT_TIMEOUT: { 7442 // if timeout happens, cancel it so that it won't block UI 7443 // to continue handling touch events 7444 if ((msg.arg1 == MotionEvent.ACTION_DOWN 7445 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 7446 || (msg.arg1 == MotionEvent.ACTION_MOVE 7447 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 7448 cancelWebCoreTouchEvent( 7449 viewToContentX(mLastTouchX + mScrollX), 7450 viewToContentY(mLastTouchY + mScrollY), 7451 true); 7452 } 7453 break; 7454 } 7455 case SCROLL_SELECT_TEXT: { 7456 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 7457 mSentAutoScrollMessage = false; 7458 break; 7459 } 7460 if (mScrollingLayer == 0) { 7461 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 7462 } else { 7463 mScrollingLayerRect.left += mAutoScrollX; 7464 mScrollingLayerRect.top += mAutoScrollY; 7465 nativeScrollLayer(mScrollingLayer, 7466 mScrollingLayerRect.left, 7467 mScrollingLayerRect.top); 7468 invalidate(); 7469 } 7470 sendEmptyMessageDelayed( 7471 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 7472 break; 7473 } 7474 case SWITCH_TO_SHORTPRESS: { 7475 mInitialHitTestResult = null; // set by updateSelection() 7476 if (mTouchMode == TOUCH_INIT_MODE) { 7477 if (!getSettings().supportTouchOnly() 7478 && mPreventDefault != PREVENT_DEFAULT_YES) { 7479 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 7480 updateSelection(); 7481 } else { 7482 // set to TOUCH_SHORTPRESS_MODE so that it won't 7483 // trigger double tap any more 7484 mTouchMode = TOUCH_SHORTPRESS_MODE; 7485 } 7486 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 7487 mTouchMode = TOUCH_DONE_MODE; 7488 } 7489 break; 7490 } 7491 case SWITCH_TO_LONGPRESS: { 7492 if (getSettings().supportTouchOnly()) { 7493 removeTouchHighlight(false); 7494 } 7495 if (inFullScreenMode() || mDeferTouchProcess) { 7496 TouchEventData ted = new TouchEventData(); 7497 ted.mAction = WebViewCore.ACTION_LONGPRESS; 7498 ted.mIds = new int[1]; 7499 ted.mIds[0] = 0; 7500 ted.mPoints = new Point[1]; 7501 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 7502 viewToContentY(mLastTouchY + mScrollY)); 7503 // metaState for long press is tricky. Should it be the 7504 // state when the press started or when the press was 7505 // released? Or some intermediary key state? For 7506 // simplicity for now, we don't set it. 7507 ted.mMetaState = 0; 7508 ted.mReprocess = mDeferTouchProcess; 7509 ted.mNativeLayer = nativeScrollableLayer( 7510 ted.mPoints[0].x, ted.mPoints[0].y, 7511 ted.mNativeLayerRect, null); 7512 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 7513 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 7514 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 7515 mTouchMode = TOUCH_DONE_MODE; 7516 performLongClick(); 7517 } 7518 break; 7519 } 7520 case RELEASE_SINGLE_TAP: { 7521 doShortPress(); 7522 break; 7523 } 7524 case SCROLL_TO_MSG_ID: { 7525 // arg1 = animate, arg2 = onlyIfImeIsShowing 7526 // obj = Point(x, y) 7527 if (msg.arg2 == 1) { 7528 // This scroll is intended to bring the textfield into 7529 // view, but is only necessary if the IME is showing 7530 InputMethodManager imm = InputMethodManager.peekInstance(); 7531 if (imm == null || !imm.isAcceptingText() 7532 || (!imm.isActive(WebView.this) && (!inEditingMode() 7533 || !imm.isActive(mWebTextView)))) { 7534 break; 7535 } 7536 } 7537 final Point p = (Point) msg.obj; 7538 if (msg.arg1 == 1) { 7539 spawnContentScrollTo(p.x, p.y); 7540 } else { 7541 setContentScrollTo(p.x, p.y); 7542 } 7543 break; 7544 } 7545 case UPDATE_ZOOM_RANGE: { 7546 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 7547 // mScrollX contains the new minPrefWidth 7548 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 7549 break; 7550 } 7551 case REPLACE_BASE_CONTENT: { 7552 nativeReplaceBaseContent(msg.arg1); 7553 break; 7554 } 7555 case NEW_PICTURE_MSG_ID: { 7556 // called for new content 7557 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 7558 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 7559 getSettings().getShowVisualIndicator()); 7560 final Point viewSize = draw.mViewSize; 7561 WebViewCore.ViewState viewState = draw.mViewState; 7562 boolean isPictureAfterFirstLayout = viewState != null; 7563 if (isPictureAfterFirstLayout) { 7564 // Reset the last sent data here since dealing with new page. 7565 mLastWidthSent = 0; 7566 mZoomManager.onFirstLayout(draw); 7567 if (!mDrawHistory) { 7568 // Do not send the scroll event for this particular 7569 // scroll message. Note that a scroll event may 7570 // still be fired if the user scrolls before the 7571 // message can be handled. 7572 mSendScrollEvent = false; 7573 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 7574 mSendScrollEvent = true; 7575 7576 // As we are on a new page, remove the WebTextView. This 7577 // is necessary for page loads driven by webkit, and in 7578 // particular when the user was on a password field, so 7579 // the WebTextView was visible. 7580 clearTextEntry(); 7581 } 7582 } 7583 7584 // We update the layout (i.e. request a layout from the 7585 // view system) if the last view size that we sent to 7586 // WebCore matches the view size of the picture we just 7587 // received in the fixed dimension. 7588 final boolean updateLayout = viewSize.x == mLastWidthSent 7589 && viewSize.y == mLastHeightSent; 7590 // Don't send scroll event for picture coming from webkit, 7591 // since the new picture may cause a scroll event to override 7592 // the saved history scroll position. 7593 mSendScrollEvent = false; 7594 recordNewContentSize(draw.mContentSize.x, 7595 draw.mContentSize.y, updateLayout); 7596 mSendScrollEvent = true; 7597 if (DebugFlags.WEB_VIEW) { 7598 Rect b = draw.mInvalRegion.getBounds(); 7599 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 7600 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 7601 } 7602 invalidateContentRect(draw.mInvalRegion.getBounds()); 7603 7604 if (mPictureListener != null) { 7605 mPictureListener.onNewPicture(WebView.this, capturePicture()); 7606 } 7607 7608 // update the zoom information based on the new picture 7609 mZoomManager.onNewPicture(draw); 7610 7611 if (draw.mFocusSizeChanged && inEditingMode()) { 7612 mFocusSizeChanged = true; 7613 } 7614 if (isPictureAfterFirstLayout) { 7615 mViewManager.postReadyToDrawAll(); 7616 } 7617 break; 7618 } 7619 case WEBCORE_INITIALIZED_MSG_ID: 7620 // nativeCreate sets mNativeClass to a non-zero value 7621 nativeCreate(msg.arg1); 7622 break; 7623 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 7624 // Make sure that the textfield is currently focused 7625 // and representing the same node as the pointer. 7626 if (inEditingMode() && 7627 mWebTextView.isSameTextField(msg.arg1)) { 7628 if (msg.getData().getBoolean("password")) { 7629 Spannable text = (Spannable) mWebTextView.getText(); 7630 int start = Selection.getSelectionStart(text); 7631 int end = Selection.getSelectionEnd(text); 7632 mWebTextView.setInPassword(true); 7633 // Restore the selection, which may have been 7634 // ruined by setInPassword. 7635 Spannable pword = 7636 (Spannable) mWebTextView.getText(); 7637 Selection.setSelection(pword, start, end); 7638 // If the text entry has created more events, ignore 7639 // this one. 7640 } else if (msg.arg2 == mTextGeneration) { 7641 String text = (String) msg.obj; 7642 if (null == text) { 7643 text = ""; 7644 } 7645 mWebTextView.setTextAndKeepSelection(text); 7646 } 7647 } 7648 break; 7649 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 7650 displaySoftKeyboard(true); 7651 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 7652 case UPDATE_TEXT_SELECTION_MSG_ID: 7653 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 7654 (WebViewCore.TextSelectionData) msg.obj); 7655 break; 7656 case FORM_DID_BLUR: 7657 if (inEditingMode() 7658 && mWebTextView.isSameTextField(msg.arg1)) { 7659 hideSoftKeyboard(); 7660 } 7661 break; 7662 case RETURN_LABEL: 7663 if (inEditingMode() 7664 && mWebTextView.isSameTextField(msg.arg1)) { 7665 mWebTextView.setHint((String) msg.obj); 7666 InputMethodManager imm 7667 = InputMethodManager.peekInstance(); 7668 // The hint is propagated to the IME in 7669 // onCreateInputConnection. If the IME is already 7670 // active, restart it so that its hint text is updated. 7671 if (imm != null && imm.isActive(mWebTextView)) { 7672 imm.restartInput(mWebTextView); 7673 } 7674 } 7675 break; 7676 case UNHANDLED_NAV_KEY: 7677 navHandledKey(msg.arg1, 1, false, 0); 7678 break; 7679 case UPDATE_TEXT_ENTRY_MSG_ID: 7680 // this is sent after finishing resize in WebViewCore. Make 7681 // sure the text edit box is still on the screen. 7682 if (inEditingMode() && nativeCursorIsTextInput()) { 7683 rebuildWebTextView(); 7684 } 7685 break; 7686 case CLEAR_TEXT_ENTRY: 7687 clearTextEntry(); 7688 break; 7689 case INVAL_RECT_MSG_ID: { 7690 Rect r = (Rect)msg.obj; 7691 if (r == null) { 7692 invalidate(); 7693 } else { 7694 // we need to scale r from content into view coords, 7695 // which viewInvalidate() does for us 7696 viewInvalidate(r.left, r.top, r.right, r.bottom); 7697 } 7698 break; 7699 } 7700 case REQUEST_FORM_DATA: 7701 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 7702 if (mWebTextView.isSameTextField(msg.arg1)) { 7703 mWebTextView.setAdapterCustom(adapter); 7704 } 7705 break; 7706 case RESUME_WEBCORE_PRIORITY: 7707 WebViewCore.resumePriority(); 7708 WebViewCore.resumeUpdatePicture(mWebViewCore); 7709 break; 7710 7711 case LONG_PRESS_CENTER: 7712 // as this is shared by keydown and trackballdown, reset all 7713 // the states 7714 mGotCenterDown = false; 7715 mTrackballDown = false; 7716 performLongClick(); 7717 break; 7718 7719 case WEBCORE_NEED_TOUCH_EVENTS: 7720 mForwardTouchEvents = (msg.arg1 != 0); 7721 break; 7722 7723 case PREVENT_TOUCH_ID: 7724 if (inFullScreenMode()) { 7725 break; 7726 } 7727 TouchEventData ted = (TouchEventData) msg.obj; 7728 7729 // WebCore is responding to us; remove pending timeout. 7730 // It will be re-posted when needed. 7731 removeMessages(PREVENT_DEFAULT_TIMEOUT); 7732 7733 mTouchEventQueue.enqueueTouchEvent(ted); 7734 break; 7735 7736 case REQUEST_KEYBOARD: 7737 if (msg.arg1 == 0) { 7738 hideSoftKeyboard(); 7739 } else { 7740 displaySoftKeyboard(false); 7741 } 7742 break; 7743 7744 case FIND_AGAIN: 7745 // Ignore if find has been dismissed. 7746 if (mFindIsUp && mFindCallback != null) { 7747 mFindCallback.findAll(); 7748 } 7749 break; 7750 7751 case DRAG_HELD_MOTIONLESS: 7752 mHeldMotionless = MOTIONLESS_TRUE; 7753 invalidate(); 7754 // fall through to keep scrollbars awake 7755 7756 case AWAKEN_SCROLL_BARS: 7757 if (mTouchMode == TOUCH_DRAG_MODE 7758 && mHeldMotionless == MOTIONLESS_TRUE) { 7759 awakenScrollBars(ViewConfiguration 7760 .getScrollDefaultDelay(), false); 7761 mPrivateHandler.sendMessageDelayed(mPrivateHandler 7762 .obtainMessage(AWAKEN_SCROLL_BARS), 7763 ViewConfiguration.getScrollDefaultDelay()); 7764 } 7765 break; 7766 7767 case DO_MOTION_UP: 7768 doMotionUp(msg.arg1, msg.arg2); 7769 break; 7770 7771 case SCREEN_ON: 7772 setKeepScreenOn(msg.arg1 == 1); 7773 break; 7774 7775 case SHOW_FULLSCREEN: { 7776 View view = (View) msg.obj; 7777 int npp = msg.arg1; 7778 7779 if (inFullScreenMode()) { 7780 Log.w(LOGTAG, "Should not have another full screen."); 7781 dismissFullScreenMode(); 7782 } 7783 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 7784 mFullScreenHolder.setContentView(view); 7785 mFullScreenHolder.setCancelable(false); 7786 mFullScreenHolder.setCanceledOnTouchOutside(false); 7787 mFullScreenHolder.show(); 7788 7789 break; 7790 } 7791 case HIDE_FULLSCREEN: 7792 dismissFullScreenMode(); 7793 break; 7794 7795 case DOM_FOCUS_CHANGED: 7796 if (inEditingMode()) { 7797 nativeClearCursor(); 7798 rebuildWebTextView(); 7799 } 7800 break; 7801 7802 case SHOW_RECT_MSG_ID: { 7803 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 7804 int x = mScrollX; 7805 int left = contentToViewX(data.mLeft); 7806 int width = contentToViewDimension(data.mWidth); 7807 int maxWidth = contentToViewDimension(data.mContentWidth); 7808 int viewWidth = getViewWidth(); 7809 if (width < viewWidth) { 7810 // center align 7811 x += left + width / 2 - mScrollX - viewWidth / 2; 7812 } else { 7813 x += (int) (left + data.mXPercentInDoc * width 7814 - mScrollX - data.mXPercentInView * viewWidth); 7815 } 7816 if (DebugFlags.WEB_VIEW) { 7817 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 7818 width + ",maxWidth=" + maxWidth + 7819 ",viewWidth=" + viewWidth + ",x=" 7820 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 7821 ",xPercentInView=" + data.mXPercentInView+ ")"); 7822 } 7823 // use the passing content width to cap x as the current 7824 // mContentWidth may not be updated yet 7825 x = Math.max(0, 7826 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 7827 int top = contentToViewY(data.mTop); 7828 int height = contentToViewDimension(data.mHeight); 7829 int maxHeight = contentToViewDimension(data.mContentHeight); 7830 int viewHeight = getViewHeight(); 7831 int y = (int) (top + data.mYPercentInDoc * height - 7832 data.mYPercentInView * viewHeight); 7833 if (DebugFlags.WEB_VIEW) { 7834 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 7835 height + ",maxHeight=" + maxHeight + 7836 ",viewHeight=" + viewHeight + ",y=" 7837 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 7838 ",yPercentInView=" + data.mYPercentInView+ ")"); 7839 } 7840 // use the passing content height to cap y as the current 7841 // mContentHeight may not be updated yet 7842 y = Math.max(0, 7843 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 7844 // We need to take into account the visible title height 7845 // when scrolling since y is an absolute view position. 7846 y = Math.max(0, y - getVisibleTitleHeight()); 7847 scrollTo(x, y); 7848 } 7849 break; 7850 7851 case CENTER_FIT_RECT: 7852 centerFitRect((Rect)msg.obj); 7853 break; 7854 7855 case SET_SCROLLBAR_MODES: 7856 mHorizontalScrollBarMode = msg.arg1; 7857 mVerticalScrollBarMode = msg.arg2; 7858 break; 7859 7860 case SELECTION_STRING_CHANGED: 7861 if (mAccessibilityInjector != null) { 7862 String selectionString = (String) msg.obj; 7863 mAccessibilityInjector.onSelectionStringChange(selectionString); 7864 } 7865 break; 7866 7867 case SET_TOUCH_HIGHLIGHT_RECTS: 7868 invalidate(mTouchHighlightRegion.getBounds()); 7869 mTouchHighlightRegion.setEmpty(); 7870 if (msg.obj != null) { 7871 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 7872 for (Rect rect : rects) { 7873 Rect viewRect = contentToViewRect(rect); 7874 // some sites, like stories in nytimes.com, set 7875 // mouse event handler in the top div. It is not 7876 // user friendly to highlight the div if it covers 7877 // more than half of the screen. 7878 if (viewRect.width() < getWidth() >> 1 7879 || viewRect.height() < getHeight() >> 1) { 7880 mTouchHighlightRegion.union(viewRect); 7881 invalidate(viewRect); 7882 } else { 7883 Log.w(LOGTAG, "Skip the huge selection rect:" 7884 + viewRect); 7885 } 7886 } 7887 } 7888 break; 7889 7890 case SAVE_WEBARCHIVE_FINISHED: 7891 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 7892 if (saveMessage.mCallback != null) { 7893 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 7894 } 7895 break; 7896 7897 case SET_AUTOFILLABLE: 7898 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 7899 if (mWebTextView != null) { 7900 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 7901 rebuildWebTextView(); 7902 } 7903 break; 7904 7905 case AUTOFILL_COMPLETE: 7906 if (mWebTextView != null) { 7907 // Clear the WebTextView adapter when AutoFill finishes 7908 // so that the drop down gets cleared. 7909 mWebTextView.setAdapterCustom(null); 7910 } 7911 break; 7912 7913 case SELECT_AT: 7914 nativeSelectAt(msg.arg1, msg.arg2); 7915 break; 7916 7917 default: 7918 super.handleMessage(msg); 7919 break; 7920 } 7921 } 7922 } 7923 7924 /** 7925 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 7926 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 7927 */ 7928 private void updateTextSelectionFromMessage(int nodePointer, 7929 int textGeneration, WebViewCore.TextSelectionData data) { 7930 if (inEditingMode() 7931 && mWebTextView.isSameTextField(nodePointer) 7932 && textGeneration == mTextGeneration) { 7933 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 7934 } 7935 } 7936 7937 // Class used to use a dropdown for a <select> element 7938 private class InvokeListBox implements Runnable { 7939 // Whether the listbox allows multiple selection. 7940 private boolean mMultiple; 7941 // Passed in to a list with multiple selection to tell 7942 // which items are selected. 7943 private int[] mSelectedArray; 7944 // Passed in to a list with single selection to tell 7945 // where the initial selection is. 7946 private int mSelection; 7947 7948 private Container[] mContainers; 7949 7950 // Need these to provide stable ids to my ArrayAdapter, 7951 // which normally does not have stable ids. (Bug 1250098) 7952 private class Container extends Object { 7953 /** 7954 * Possible values for mEnabled. Keep in sync with OptionStatus in 7955 * WebViewCore.cpp 7956 */ 7957 final static int OPTGROUP = -1; 7958 final static int OPTION_DISABLED = 0; 7959 final static int OPTION_ENABLED = 1; 7960 7961 String mString; 7962 int mEnabled; 7963 int mId; 7964 7965 @Override 7966 public String toString() { 7967 return mString; 7968 } 7969 } 7970 7971 /** 7972 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 7973 * and allow filtering. 7974 */ 7975 private class MyArrayListAdapter extends ArrayAdapter<Container> { 7976 public MyArrayListAdapter() { 7977 super(mContext, 7978 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 7979 com.android.internal.R.layout.webview_select_singlechoice, 7980 mContainers); 7981 } 7982 7983 @Override 7984 public View getView(int position, View convertView, 7985 ViewGroup parent) { 7986 // Always pass in null so that we will get a new CheckedTextView 7987 // Otherwise, an item which was previously used as an <optgroup> 7988 // element (i.e. has no check), could get used as an <option> 7989 // element, which needs a checkbox/radio, but it would not have 7990 // one. 7991 convertView = super.getView(position, null, parent); 7992 Container c = item(position); 7993 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 7994 // ListView does not draw dividers between disabled and 7995 // enabled elements. Use a LinearLayout to provide dividers 7996 LinearLayout layout = new LinearLayout(mContext); 7997 layout.setOrientation(LinearLayout.VERTICAL); 7998 if (position > 0) { 7999 View dividerTop = new View(mContext); 8000 dividerTop.setBackgroundResource( 8001 android.R.drawable.divider_horizontal_bright); 8002 layout.addView(dividerTop); 8003 } 8004 8005 if (Container.OPTGROUP == c.mEnabled) { 8006 // Currently select_dialog_multichoice uses CheckedTextViews. 8007 // If that changes, the class cast will no longer be valid. 8008 if (mMultiple) { 8009 Assert.assertTrue(convertView instanceof CheckedTextView); 8010 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 8011 } 8012 } else { 8013 // c.mEnabled == Container.OPTION_DISABLED 8014 // Draw the disabled element in a disabled state. 8015 convertView.setEnabled(false); 8016 } 8017 8018 layout.addView(convertView); 8019 if (position < getCount() - 1) { 8020 View dividerBottom = new View(mContext); 8021 dividerBottom.setBackgroundResource( 8022 android.R.drawable.divider_horizontal_bright); 8023 layout.addView(dividerBottom); 8024 } 8025 return layout; 8026 } 8027 return convertView; 8028 } 8029 8030 @Override 8031 public boolean hasStableIds() { 8032 // AdapterView's onChanged method uses this to determine whether 8033 // to restore the old state. Return false so that the old (out 8034 // of date) state does not replace the new, valid state. 8035 return false; 8036 } 8037 8038 private Container item(int position) { 8039 if (position < 0 || position >= getCount()) { 8040 return null; 8041 } 8042 return (Container) getItem(position); 8043 } 8044 8045 @Override 8046 public long getItemId(int position) { 8047 Container item = item(position); 8048 if (item == null) { 8049 return -1; 8050 } 8051 return item.mId; 8052 } 8053 8054 @Override 8055 public boolean areAllItemsEnabled() { 8056 return false; 8057 } 8058 8059 @Override 8060 public boolean isEnabled(int position) { 8061 Container item = item(position); 8062 if (item == null) { 8063 return false; 8064 } 8065 return Container.OPTION_ENABLED == item.mEnabled; 8066 } 8067 } 8068 8069 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 8070 mMultiple = true; 8071 mSelectedArray = selected; 8072 8073 int length = array.length; 8074 mContainers = new Container[length]; 8075 for (int i = 0; i < length; i++) { 8076 mContainers[i] = new Container(); 8077 mContainers[i].mString = array[i]; 8078 mContainers[i].mEnabled = enabled[i]; 8079 mContainers[i].mId = i; 8080 } 8081 } 8082 8083 private InvokeListBox(String[] array, int[] enabled, int selection) { 8084 mSelection = selection; 8085 mMultiple = false; 8086 8087 int length = array.length; 8088 mContainers = new Container[length]; 8089 for (int i = 0; i < length; i++) { 8090 mContainers[i] = new Container(); 8091 mContainers[i].mString = array[i]; 8092 mContainers[i].mEnabled = enabled[i]; 8093 mContainers[i].mId = i; 8094 } 8095 } 8096 8097 /* 8098 * Whenever the data set changes due to filtering, this class ensures 8099 * that the checked item remains checked. 8100 */ 8101 private class SingleDataSetObserver extends DataSetObserver { 8102 private long mCheckedId; 8103 private ListView mListView; 8104 private Adapter mAdapter; 8105 8106 /* 8107 * Create a new observer. 8108 * @param id The ID of the item to keep checked. 8109 * @param l ListView for getting and clearing the checked states 8110 * @param a Adapter for getting the IDs 8111 */ 8112 public SingleDataSetObserver(long id, ListView l, Adapter a) { 8113 mCheckedId = id; 8114 mListView = l; 8115 mAdapter = a; 8116 } 8117 8118 @Override 8119 public void onChanged() { 8120 // The filter may have changed which item is checked. Find the 8121 // item that the ListView thinks is checked. 8122 int position = mListView.getCheckedItemPosition(); 8123 long id = mAdapter.getItemId(position); 8124 if (mCheckedId != id) { 8125 // Clear the ListView's idea of the checked item, since 8126 // it is incorrect 8127 mListView.clearChoices(); 8128 // Search for mCheckedId. If it is in the filtered list, 8129 // mark it as checked 8130 int count = mAdapter.getCount(); 8131 for (int i = 0; i < count; i++) { 8132 if (mAdapter.getItemId(i) == mCheckedId) { 8133 mListView.setItemChecked(i, true); 8134 break; 8135 } 8136 } 8137 } 8138 } 8139 } 8140 8141 public void run() { 8142 final ListView listView = (ListView) LayoutInflater.from(mContext) 8143 .inflate(com.android.internal.R.layout.select_dialog, null); 8144 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 8145 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 8146 .setView(listView).setCancelable(true) 8147 .setInverseBackgroundForced(true); 8148 8149 if (mMultiple) { 8150 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 8151 public void onClick(DialogInterface dialog, int which) { 8152 mWebViewCore.sendMessage( 8153 EventHub.LISTBOX_CHOICES, 8154 adapter.getCount(), 0, 8155 listView.getCheckedItemPositions()); 8156 }}); 8157 b.setNegativeButton(android.R.string.cancel, 8158 new DialogInterface.OnClickListener() { 8159 public void onClick(DialogInterface dialog, int which) { 8160 mWebViewCore.sendMessage( 8161 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8162 }}); 8163 } 8164 mListBoxDialog = b.create(); 8165 listView.setAdapter(adapter); 8166 listView.setFocusableInTouchMode(true); 8167 // There is a bug (1250103) where the checks in a ListView with 8168 // multiple items selected are associated with the positions, not 8169 // the ids, so the items do not properly retain their checks when 8170 // filtered. Do not allow filtering on multiple lists until 8171 // that bug is fixed. 8172 8173 listView.setTextFilterEnabled(!mMultiple); 8174 if (mMultiple) { 8175 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 8176 int length = mSelectedArray.length; 8177 for (int i = 0; i < length; i++) { 8178 listView.setItemChecked(mSelectedArray[i], true); 8179 } 8180 } else { 8181 listView.setOnItemClickListener(new OnItemClickListener() { 8182 public void onItemClick(AdapterView<?> parent, View v, 8183 int position, long id) { 8184 // Rather than sending the message right away, send it 8185 // after the page regains focus. 8186 mListBoxMessage = Message.obtain(null, 8187 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 8188 mListBoxDialog.dismiss(); 8189 mListBoxDialog = null; 8190 } 8191 }); 8192 if (mSelection != -1) { 8193 listView.setSelection(mSelection); 8194 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 8195 listView.setItemChecked(mSelection, true); 8196 DataSetObserver observer = new SingleDataSetObserver( 8197 adapter.getItemId(mSelection), listView, adapter); 8198 adapter.registerDataSetObserver(observer); 8199 } 8200 } 8201 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 8202 public void onCancel(DialogInterface dialog) { 8203 mWebViewCore.sendMessage( 8204 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8205 mListBoxDialog = null; 8206 } 8207 }); 8208 mListBoxDialog.show(); 8209 } 8210 } 8211 8212 private Message mListBoxMessage; 8213 8214 /* 8215 * Request a dropdown menu for a listbox with multiple selection. 8216 * 8217 * @param array Labels for the listbox. 8218 * @param enabledArray State for each element in the list. See static 8219 * integers in Container class. 8220 * @param selectedArray Which positions are initally selected. 8221 */ 8222 void requestListBox(String[] array, int[] enabledArray, int[] 8223 selectedArray) { 8224 mPrivateHandler.post( 8225 new InvokeListBox(array, enabledArray, selectedArray)); 8226 } 8227 8228 /* 8229 * Request a dropdown menu for a listbox with single selection or a single 8230 * <select> element. 8231 * 8232 * @param array Labels for the listbox. 8233 * @param enabledArray State for each element in the list. See static 8234 * integers in Container class. 8235 * @param selection Which position is initally selected. 8236 */ 8237 void requestListBox(String[] array, int[] enabledArray, int selection) { 8238 mPrivateHandler.post( 8239 new InvokeListBox(array, enabledArray, selection)); 8240 } 8241 8242 // called by JNI 8243 private void sendMoveFocus(int frame, int node) { 8244 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 8245 new WebViewCore.CursorData(frame, node, 0, 0)); 8246 } 8247 8248 // called by JNI 8249 private void sendMoveMouse(int frame, int node, int x, int y) { 8250 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 8251 new WebViewCore.CursorData(frame, node, x, y)); 8252 } 8253 8254 /* 8255 * Send a mouse move event to the webcore thread. 8256 * 8257 * @param removeFocus Pass true to remove the WebTextView, if present. 8258 * @param stopPaintingCaret Stop drawing the blinking caret if true. 8259 * called by JNI 8260 */ 8261 @SuppressWarnings("unused") 8262 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 8263 if (removeFocus) { 8264 clearTextEntry(); 8265 } 8266 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 8267 stopPaintingCaret ? 1 : 0, 0, 8268 cursorData()); 8269 } 8270 8271 /** 8272 * Called by JNI to send a message to the webcore thread that the user 8273 * touched the webpage. 8274 * @param touchGeneration Generation number of the touch, to ignore touches 8275 * after a new one has been generated. 8276 * @param frame Pointer to the frame holding the node that was touched. 8277 * @param node Pointer to the node touched. 8278 * @param x x-position of the touch. 8279 * @param y y-position of the touch. 8280 */ 8281 private void sendMotionUp(int touchGeneration, 8282 int frame, int node, int x, int y) { 8283 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 8284 touchUpData.mMoveGeneration = touchGeneration; 8285 touchUpData.mFrame = frame; 8286 touchUpData.mNode = node; 8287 touchUpData.mX = x; 8288 touchUpData.mY = y; 8289 touchUpData.mNativeLayer = nativeScrollableLayer( 8290 x, y, touchUpData.mNativeLayerRect, null); 8291 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 8292 } 8293 8294 8295 private int getScaledMaxXScroll() { 8296 int width; 8297 if (mHeightCanMeasure == false) { 8298 width = getViewWidth() / 4; 8299 } else { 8300 Rect visRect = new Rect(); 8301 calcOurVisibleRect(visRect); 8302 width = visRect.width() / 2; 8303 } 8304 // FIXME the divisor should be retrieved from somewhere 8305 return viewToContentX(width); 8306 } 8307 8308 private int getScaledMaxYScroll() { 8309 int height; 8310 if (mHeightCanMeasure == false) { 8311 height = getViewHeight() / 4; 8312 } else { 8313 Rect visRect = new Rect(); 8314 calcOurVisibleRect(visRect); 8315 height = visRect.height() / 2; 8316 } 8317 // FIXME the divisor should be retrieved from somewhere 8318 // the closest thing today is hard-coded into ScrollView.java 8319 // (from ScrollView.java, line 363) int maxJump = height/2; 8320 return Math.round(height * mZoomManager.getInvScale()); 8321 } 8322 8323 /** 8324 * Called by JNI to invalidate view 8325 */ 8326 private void viewInvalidate() { 8327 invalidate(); 8328 } 8329 8330 /** 8331 * Pass the key directly to the page. This assumes that 8332 * nativePageShouldHandleShiftAndArrows() returned true. 8333 */ 8334 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 8335 int keyEventAction; 8336 int eventHubAction; 8337 if (down) { 8338 keyEventAction = KeyEvent.ACTION_DOWN; 8339 eventHubAction = EventHub.KEY_DOWN; 8340 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 8341 } else { 8342 keyEventAction = KeyEvent.ACTION_UP; 8343 eventHubAction = EventHub.KEY_UP; 8344 } 8345 8346 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 8347 1, (metaState & KeyEvent.META_SHIFT_ON) 8348 | (metaState & KeyEvent.META_ALT_ON) 8349 | (metaState & KeyEvent.META_SYM_ON) 8350 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 8351 mWebViewCore.sendMessage(eventHubAction, event); 8352 } 8353 8354 // return true if the key was handled 8355 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 8356 long time) { 8357 if (mNativeClass == 0) { 8358 return false; 8359 } 8360 mInitialHitTestResult = null; 8361 mLastCursorTime = time; 8362 mLastCursorBounds = nativeGetCursorRingBounds(); 8363 boolean keyHandled 8364 = nativeMoveCursor(keyCode, count, noScroll) == false; 8365 if (DebugFlags.WEB_VIEW) { 8366 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 8367 + " mLastCursorTime=" + mLastCursorTime 8368 + " handled=" + keyHandled); 8369 } 8370 if (keyHandled == false) { 8371 return keyHandled; 8372 } 8373 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 8374 if (contentCursorRingBounds.isEmpty()) return keyHandled; 8375 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 8376 // set last touch so that context menu related functions will work 8377 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 8378 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 8379 if (mHeightCanMeasure == false) { 8380 return keyHandled; 8381 } 8382 Rect visRect = new Rect(); 8383 calcOurVisibleRect(visRect); 8384 Rect outset = new Rect(visRect); 8385 int maxXScroll = visRect.width() / 2; 8386 int maxYScroll = visRect.height() / 2; 8387 outset.inset(-maxXScroll, -maxYScroll); 8388 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 8389 return keyHandled; 8390 } 8391 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 8392 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 8393 maxXScroll); 8394 if (maxH > 0) { 8395 pinScrollBy(maxH, 0, true, 0); 8396 } else { 8397 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 8398 -maxXScroll); 8399 if (maxH < 0) { 8400 pinScrollBy(maxH, 0, true, 0); 8401 } 8402 } 8403 if (mLastCursorBounds.isEmpty()) return keyHandled; 8404 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 8405 return keyHandled; 8406 } 8407 if (DebugFlags.WEB_VIEW) { 8408 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 8409 + contentCursorRingBounds); 8410 } 8411 requestRectangleOnScreen(viewCursorRingBounds); 8412 return keyHandled; 8413 } 8414 8415 /** 8416 * @return Whether accessibility script has been injected. 8417 */ 8418 private boolean accessibilityScriptInjected() { 8419 // TODO: Maybe the injected script should announce its presence in 8420 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 8421 // will check that as one of the conditions it looks for 8422 return mAccessibilityScriptInjected; 8423 } 8424 8425 /** 8426 * Set the background color. It's white by default. Pass 8427 * zero to make the view transparent. 8428 * @param color the ARGB color described by Color.java 8429 */ 8430 @Override 8431 public void setBackgroundColor(int color) { 8432 mBackgroundColor = color; 8433 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 8434 } 8435 8436 /** 8437 * @deprecated This method is now obsolete. 8438 */ 8439 @Deprecated 8440 public void debugDump() { 8441 nativeDebugDump(); 8442 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 8443 } 8444 8445 /** 8446 * Draw the HTML page into the specified canvas. This call ignores any 8447 * view-specific zoom, scroll offset, or other changes. It does not draw 8448 * any view-specific chrome, such as progress or URL bars. 8449 * 8450 * @hide only needs to be accessible to Browser and testing 8451 */ 8452 public void drawPage(Canvas canvas) { 8453 nativeDraw(canvas, 0, 0, false); 8454 } 8455 8456 /** 8457 * Enable expanded tiles bound for smoother scrolling. 8458 * 8459 * @hide only used by the Browser 8460 */ 8461 public void setExpandedTileBounds(boolean enabled) { 8462 nativeSetExpandedTileBounds(enabled); 8463 } 8464 8465 /** 8466 * Set the time to wait between passing touches to WebCore. See also the 8467 * TOUCH_SENT_INTERVAL member for further discussion. 8468 * 8469 * @hide This is only used by the DRT test application. 8470 */ 8471 public void setTouchInterval(int interval) { 8472 mCurrentTouchInterval = interval; 8473 } 8474 8475 /** 8476 * Update our cache with updatedText. 8477 * @param updatedText The new text to put in our cache. 8478 */ 8479 /* package */ void updateCachedTextfield(String updatedText) { 8480 // Also place our generation number so that when we look at the cache 8481 // we recognize that it is up to date. 8482 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 8483 } 8484 8485 /*package*/ void autoFillForm(int autoFillQueryId) { 8486 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 8487 } 8488 8489 /* package */ ViewManager getViewManager() { 8490 return mViewManager; 8491 } 8492 8493 private native int nativeCacheHitFramePointer(); 8494 private native boolean nativeCacheHitIsPlugin(); 8495 private native Rect nativeCacheHitNodeBounds(); 8496 private native int nativeCacheHitNodePointer(); 8497 /* package */ native void nativeClearCursor(); 8498 private native void nativeCreate(int ptr); 8499 private native int nativeCursorFramePointer(); 8500 private native Rect nativeCursorNodeBounds(); 8501 private native int nativeCursorNodePointer(); 8502 private native boolean nativeCursorIntersects(Rect visibleRect); 8503 private native boolean nativeCursorIsAnchor(); 8504 private native boolean nativeCursorIsTextInput(); 8505 private native Point nativeCursorPosition(); 8506 private native String nativeCursorText(); 8507 /** 8508 * Returns true if the native cursor node says it wants to handle key events 8509 * (ala plugins). This can only be called if mNativeClass is non-zero! 8510 */ 8511 private native boolean nativeCursorWantsKeyEvents(); 8512 private native void nativeDebugDump(); 8513 private native void nativeDestroy(); 8514 8515 /** 8516 * Draw the picture set with a background color and extra. If 8517 * "splitIfNeeded" is true and the return value is not 0, the return value 8518 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 8519 * native allocation can be freed. 8520 */ 8521 private native int nativeDraw(Canvas canvas, int color, int extra, 8522 boolean splitIfNeeded); 8523 private native void nativeDumpDisplayTree(String urlOrNull); 8524 private native boolean nativeEvaluateLayersAnimations(); 8525 private native int nativeGetDrawGLFunction(Rect rect, Rect viewRect, 8526 float scale, int extras); 8527 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect); 8528 private native boolean nativeDrawGL(Rect rect, float scale, int extras); 8529 private native void nativeExtendSelection(int x, int y); 8530 private native int nativeFindAll(String findLower, String findUpper, 8531 boolean sameAsLastSearch); 8532 private native void nativeFindNext(boolean forward); 8533 /* package */ native int nativeFocusCandidateFramePointer(); 8534 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 8535 /* package */ native boolean nativeFocusCandidateIsPassword(); 8536 private native boolean nativeFocusCandidateIsRtlText(); 8537 private native boolean nativeFocusCandidateIsTextInput(); 8538 /* package */ native int nativeFocusCandidateMaxLength(); 8539 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 8540 /* package */ native String nativeFocusCandidateName(); 8541 private native Rect nativeFocusCandidateNodeBounds(); 8542 /** 8543 * @return A Rect with left, top, right, bottom set to the corresponding 8544 * padding values in the focus candidate, if it is a textfield/textarea with 8545 * a style. Otherwise return null. This is not actually a rectangle; Rect 8546 * is being used to pass four integers. 8547 */ 8548 private native Rect nativeFocusCandidatePaddingRect(); 8549 /* package */ native int nativeFocusCandidatePointer(); 8550 private native String nativeFocusCandidateText(); 8551 /* package */ native float nativeFocusCandidateTextSize(); 8552 /* package */ native int nativeFocusCandidateLineHeight(); 8553 /** 8554 * Returns an integer corresponding to WebView.cpp::type. 8555 * See WebTextView.setType() 8556 */ 8557 private native int nativeFocusCandidateType(); 8558 private native boolean nativeFocusIsPlugin(); 8559 private native Rect nativeFocusNodeBounds(); 8560 /* package */ native int nativeFocusNodePointer(); 8561 private native Rect nativeGetCursorRingBounds(); 8562 private native String nativeGetSelection(); 8563 private native boolean nativeHasCursorNode(); 8564 private native boolean nativeHasFocusNode(); 8565 private native void nativeHideCursor(); 8566 private native boolean nativeHitSelection(int x, int y); 8567 private native String nativeImageURI(int x, int y); 8568 private native void nativeInstrumentReport(); 8569 private native Rect nativeLayerBounds(int layer); 8570 /* package */ native boolean nativeMoveCursorToNextTextInput(); 8571 // return true if the page has been scrolled 8572 private native boolean nativeMotionUp(int x, int y, int slop); 8573 // returns false if it handled the key 8574 private native boolean nativeMoveCursor(int keyCode, int count, 8575 boolean noScroll); 8576 private native int nativeMoveGeneration(); 8577 private native void nativeMoveSelection(int x, int y); 8578 /** 8579 * @return true if the page should get the shift and arrow keys, rather 8580 * than select text/navigation. 8581 * 8582 * If the focus is a plugin, or if the focus and cursor match and are 8583 * a contentEditable element, then the page should handle these keys. 8584 */ 8585 private native boolean nativePageShouldHandleShiftAndArrows(); 8586 private native boolean nativePointInNavCache(int x, int y, int slop); 8587 // Like many other of our native methods, you must make sure that 8588 // mNativeClass is not null before calling this method. 8589 private native void nativeRecordButtons(boolean focused, 8590 boolean pressed, boolean invalidate); 8591 private native void nativeResetSelection(); 8592 private native Point nativeSelectableText(); 8593 private native void nativeSelectAll(); 8594 private native void nativeSelectBestAt(Rect rect); 8595 private native void nativeSelectAt(int x, int y); 8596 private native int nativeSelectionX(); 8597 private native int nativeSelectionY(); 8598 private native int nativeFindIndex(); 8599 private native void nativeSetExtendSelection(); 8600 private native void nativeSetFindIsEmpty(); 8601 private native void nativeSetFindIsUp(boolean isUp); 8602 private native void nativeSetHeightCanMeasure(boolean measure); 8603 private native void nativeSetBaseLayer(int layer, Region invalRegion, 8604 boolean showVisualIndicator); 8605 private native void nativeShowCursorTimed(); 8606 private native void nativeReplaceBaseContent(int content); 8607 private native void nativeCopyBaseContentToPicture(Picture pict); 8608 private native boolean nativeHasContent(); 8609 private native void nativeSetSelectionPointer(boolean set, 8610 float scale, int x, int y); 8611 private native boolean nativeStartSelection(int x, int y); 8612 private native void nativeStopGL(); 8613 private native Rect nativeSubtractLayers(Rect content); 8614 private native int nativeTextGeneration(); 8615 // Never call this version except by updateCachedTextfield(String) - 8616 // we always want to pass in our generation number. 8617 private native void nativeUpdateCachedTextfield(String updatedText, 8618 int generation); 8619 private native boolean nativeWordSelection(int x, int y); 8620 // return NO_LEFTEDGE means failure. 8621 static final int NO_LEFTEDGE = -1; 8622 native int nativeGetBlockLeftEdge(int x, int y, float scale); 8623 8624 private native void nativeSetExpandedTileBounds(boolean enabled); 8625 8626 // Returns a pointer to the scrollable LayerAndroid at the given point. 8627 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 8628 Rect scrollBounds); 8629 /** 8630 * Scroll the specified layer. 8631 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 8632 * @param newX Destination x position to which to scroll. 8633 * @param newY Destination y position to which to scroll. 8634 * @return True if the layer is successfully scrolled. 8635 */ 8636 private native boolean nativeScrollLayer(int layer, int newX, int newY); 8637} 8638