WebView.java revision 18e939623556928f73fcc7511c85a537929a4a7e
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.app.AlertDialog; 20import android.content.Context; 21import android.content.DialogInterface; 22import android.content.Intent; 23import android.content.DialogInterface.OnCancelListener; 24import android.content.pm.PackageManager; 25import android.database.DataSetObserver; 26import android.graphics.Bitmap; 27import android.graphics.Canvas; 28import android.graphics.Color; 29import android.graphics.Interpolator; 30import android.graphics.Picture; 31import android.graphics.Point; 32import android.graphics.Rect; 33import android.graphics.drawable.Drawable; 34import android.net.http.SslCertificate; 35import android.net.Uri; 36import android.os.Bundle; 37import android.os.Handler; 38import android.os.Message; 39import android.os.ServiceManager; 40import android.os.SystemClock; 41import android.text.IClipboard; 42import android.text.Selection; 43import android.text.Spannable; 44import android.util.AttributeSet; 45import android.util.EventLog; 46import android.util.Log; 47import android.util.TypedValue; 48import android.view.Gravity; 49import android.view.KeyEvent; 50import android.view.LayoutInflater; 51import android.view.MotionEvent; 52import android.view.ScaleGestureDetector; 53import android.view.SoundEffectConstants; 54import android.view.VelocityTracker; 55import android.view.View; 56import android.view.ViewConfiguration; 57import android.view.ViewGroup; 58import android.view.ViewTreeObserver; 59import android.view.animation.AlphaAnimation; 60import android.view.inputmethod.EditorInfo; 61import android.view.inputmethod.InputConnection; 62import android.view.inputmethod.InputMethodManager; 63import android.webkit.WebTextView.AutoCompleteAdapter; 64import android.webkit.WebViewCore.EventHub; 65import android.widget.AbsoluteLayout; 66import android.widget.Adapter; 67import android.widget.AdapterView; 68import android.widget.ArrayAdapter; 69import android.widget.CheckedTextView; 70import android.widget.FrameLayout; 71import android.widget.LinearLayout; 72import android.widget.ListView; 73import android.widget.Scroller; 74import android.widget.Toast; 75import android.widget.ZoomButtonsController; 76import android.widget.ZoomControls; 77import android.widget.AdapterView.OnItemClickListener; 78 79import java.io.File; 80import java.io.FileInputStream; 81import java.io.FileNotFoundException; 82import java.io.FileOutputStream; 83import java.io.IOException; 84import java.net.URLDecoder; 85import java.util.ArrayList; 86import java.util.List; 87import java.util.HashMap; 88import java.util.Map; 89 90import junit.framework.Assert; 91 92/** 93 * <p>A View that displays web pages. This class is the basis upon which you 94 * can roll your own web browser or simply display some online content within your Activity. 95 * It uses the WebKit rendering engine to display 96 * web pages and includes methods to navigate forward and backward 97 * through a history, zoom in and out, perform text searches and more.</p> 98 * <p>To enable the built-in zoom, set 99 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 100 * (introduced in API version 3). 101 * <p>Note that, in order for your Activity to access the Internet and load web pages 102 * in a WebView, you must add the <var>INTERNET</var> permissions to your 103 * Android Manifest file:</p> 104 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 105 * 106 * <p>This must be a child of the <code><manifest></code> element.</p> 107 * 108 * <h3>Basic usage</h3> 109 * 110 * <p>By default, a WebView provides no browser-like widgets, does not 111 * enable JavaScript and errors will be ignored. If your goal is only 112 * to display some HTML as a part of your UI, this is probably fine; 113 * the user won't need to interact with the web page beyond reading 114 * it, and the web page won't need to interact with the user. If you 115 * actually want a fully blown web browser, then you probably want to 116 * invoke the Browser application with your URL rather than show it 117 * with a WebView. See {@link android.content.Intent} for more information.</p> 118 * 119 * <pre class="prettyprint"> 120 * WebView webview = new WebView(this); 121 * setContentView(webview); 122 * 123 * // Simplest usage: note that an exception will NOT be thrown 124 * // if there is an error loading this page (see below). 125 * webview.loadUrl("http://slashdot.org/"); 126 * 127 * // Of course you can also load from any string: 128 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 129 * webview.loadData(summary, "text/html", "utf-8"); 130 * // ... although note that there are restrictions on what this HTML can do. 131 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 132 * </pre> 133 * 134 * <p>A WebView has several customization points where you can add your 135 * own behavior. These are:</p> 136 * 137 * <ul> 138 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 139 * This class is called when something that might impact a 140 * browser UI happens, for instance, progress updates and 141 * JavaScript alerts are sent here. 142 * </li> 143 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 144 * It will be called when things happen that impact the 145 * rendering of the content, eg, errors or form submissions. You 146 * can also intercept URL loading here.</li> 147 * <li>Via the {@link android.webkit.WebSettings} class, which contains 148 * miscellaneous configuration. </li> 149 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 150 * This lets you bind Java objects into the WebView so they can be 151 * controlled from the web pages JavaScript.</li> 152 * </ul> 153 * 154 * <p>Here's a more complicated example, showing error handling, 155 * settings, and progress notification:</p> 156 * 157 * <pre class="prettyprint"> 158 * // Let's display the progress in the activity title bar, like the 159 * // browser app does. 160 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 161 * 162 * webview.getSettings().setJavaScriptEnabled(true); 163 * 164 * final Activity activity = this; 165 * webview.setWebChromeClient(new WebChromeClient() { 166 * public void onProgressChanged(WebView view, int progress) { 167 * // Activities and WebViews measure progress with different scales. 168 * // The progress meter will automatically disappear when we reach 100% 169 * activity.setProgress(progress * 1000); 170 * } 171 * }); 172 * webview.setWebViewClient(new WebViewClient() { 173 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 174 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 175 * } 176 * }); 177 * 178 * webview.loadUrl("http://slashdot.org/"); 179 * </pre> 180 * 181 * <h3>Cookie and window management</h3> 182 * 183 * <p>For obvious security reasons, your application has its own 184 * cache, cookie store etc - it does not share the Browser 185 * applications data. Cookies are managed on a separate thread, so 186 * operations like index building don't block the UI 187 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 188 * if you want to use cookies in your application. 189 * </p> 190 * 191 * <p>By default, requests by the HTML to open new windows are 192 * ignored. This is true whether they be opened by JavaScript or by 193 * the target attribute on a link. You can customize your 194 * WebChromeClient to provide your own behaviour for opening multiple windows, 195 * and render them in whatever manner you want.</p> 196 * 197 * <p>Standard behavior for an Activity is to be destroyed and 198 * recreated when the devices orientation is changed. This will cause 199 * the WebView to reload the current page. If you don't want that, you 200 * can set your Activity to handle the orientation and keyboardHidden 201 * changes, and then just leave the WebView alone. It'll automatically 202 * re-orient itself as appropriate.</p> 203 */ 204public class WebView extends AbsoluteLayout 205 implements ViewTreeObserver.OnGlobalFocusChangeListener, 206 ViewGroup.OnHierarchyChangeListener { 207 208 // enable debug output for drag trackers 209 private static final boolean DEBUG_DRAG_TRACKER = false; 210 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 211 // the screen all-the-time. Good for profiling our drawing code 212 static private final boolean AUTO_REDRAW_HACK = false; 213 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 214 private boolean mAutoRedraw; 215 private int mRootLayer; // C++ pointer to the root layer 216 private boolean mLayersHaveAnimations; 217 private EvaluateLayersAnimations mEvaluateThread; 218 219 static final String LOGTAG = "webview"; 220 221 private static class ExtendedZoomControls extends FrameLayout { 222 public ExtendedZoomControls(Context context, AttributeSet attrs) { 223 super(context, attrs); 224 LayoutInflater inflater = (LayoutInflater) 225 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 226 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 227 mPlusMinusZoomControls = (ZoomControls) findViewById( 228 com.android.internal.R.id.zoomControls); 229 findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( 230 View.GONE); 231 } 232 233 public void show(boolean showZoom, boolean canZoomOut) { 234 mPlusMinusZoomControls.setVisibility( 235 showZoom ? View.VISIBLE : View.GONE); 236 fade(View.VISIBLE, 0.0f, 1.0f); 237 } 238 239 public void hide() { 240 fade(View.GONE, 1.0f, 0.0f); 241 } 242 243 private void fade(int visibility, float startAlpha, float endAlpha) { 244 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 245 anim.setDuration(500); 246 startAnimation(anim); 247 setVisibility(visibility); 248 } 249 250 public boolean hasFocus() { 251 return mPlusMinusZoomControls.hasFocus(); 252 } 253 254 public void setOnZoomInClickListener(OnClickListener listener) { 255 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 256 } 257 258 public void setOnZoomOutClickListener(OnClickListener listener) { 259 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 260 } 261 262 ZoomControls mPlusMinusZoomControls; 263 } 264 265 /** 266 * Transportation object for returning WebView across thread boundaries. 267 */ 268 public class WebViewTransport { 269 private WebView mWebview; 270 271 /** 272 * Set the WebView to the transportation object. 273 * @param webview The WebView to transport. 274 */ 275 public synchronized void setWebView(WebView webview) { 276 mWebview = webview; 277 } 278 279 /** 280 * Return the WebView object. 281 * @return WebView The transported WebView object. 282 */ 283 public synchronized WebView getWebView() { 284 return mWebview; 285 } 286 } 287 288 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 289 private final CallbackProxy mCallbackProxy; 290 291 private final WebViewDatabase mDatabase; 292 293 // SSL certificate for the main top-level page (if secure) 294 private SslCertificate mCertificate; 295 296 // Native WebView pointer that is 0 until the native object has been 297 // created. 298 private int mNativeClass; 299 // This would be final but it needs to be set to null when the WebView is 300 // destroyed. 301 private WebViewCore mWebViewCore; 302 // Handler for dispatching UI messages. 303 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 304 private WebTextView mWebTextView; 305 // Used to ignore changes to webkit text that arrives to the UI side after 306 // more key events. 307 private int mTextGeneration; 308 309 // Used by WebViewCore to create child views. 310 /* package */ final ViewManager mViewManager; 311 312 // Used to display in full screen mode 313 PluginFullScreenHolder mFullScreenHolder; 314 315 /** 316 * Position of the last touch event. 317 */ 318 private float mLastTouchX; 319 private float mLastTouchY; 320 321 /** 322 * Time of the last touch event. 323 */ 324 private long mLastTouchTime; 325 326 /** 327 * Time of the last time sending touch event to WebViewCore 328 */ 329 private long mLastSentTouchTime; 330 331 /** 332 * The minimum elapsed time before sending another ACTION_MOVE event to 333 * WebViewCore. This really should be tuned for each type of the devices. 334 * For example in Google Map api test case, it takes Dream device at least 335 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 336 * triggering the layout and drawing the picture. While the same process 337 * takes 60+ms on the current high speed device. If we make 338 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 339 * to WebViewCore queue and the real layout and draw events will be pushed 340 * to further, which slows down the refresh rate. Choose 50 to favor the 341 * current high speed devices. For Dream like devices, 100 is a better 342 * choice. Maybe make this in the buildspec later. 343 */ 344 private static final int TOUCH_SENT_INTERVAL = 50; 345 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 346 347 /** 348 * Helper class to get velocity for fling 349 */ 350 VelocityTracker mVelocityTracker; 351 private int mMaximumFling; 352 private float mLastVelocity; 353 private float mLastVelX; 354 private float mLastVelY; 355 356 /** 357 * Touch mode 358 */ 359 private int mTouchMode = TOUCH_DONE_MODE; 360 private static final int TOUCH_INIT_MODE = 1; 361 private static final int TOUCH_DRAG_START_MODE = 2; 362 private static final int TOUCH_DRAG_MODE = 3; 363 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 364 private static final int TOUCH_SHORTPRESS_MODE = 5; 365 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 366 private static final int TOUCH_DONE_MODE = 7; 367 private static final int TOUCH_SELECT_MODE = 8; 368 private static final int TOUCH_PINCH_DRAG = 9; 369 370 // Whether to forward the touch events to WebCore 371 private boolean mForwardTouchEvents = false; 372 373 // Whether to prevent drag during touch. The initial value depends on 374 // mForwardTouchEvents. If WebCore wants touch events, we assume it will 375 // take control of touch events unless it says no for touch down event. 376 private static final int PREVENT_DRAG_NO = 0; 377 private static final int PREVENT_DRAG_MAYBE_YES = 1; 378 private static final int PREVENT_DRAG_YES = 2; 379 private int mPreventDrag = PREVENT_DRAG_NO; 380 381 // by default mPreventLongPress is false. If it is true, long press event 382 // will be handled by WebKit instead of UI. 383 private boolean mPreventLongPress = false; 384 // by default mPreventDoubleTap is false. If it is true, double tap event 385 // will be handled by WebKit instead of UI. 386 private boolean mPreventDoubleTap = false; 387 388 // this needs to be in sync with the logic in WebKit's 389 // EventHandler::handleTouchEvent() 390 private static final int TOUCH_PREVENT_DRAG = 0x1; 391 private static final int TOUCH_PREVENT_LONGPRESS = 0x2; 392 private static final int TOUCH_PREVENT_DOUBLETAP = 0x4; 393 394 // To keep track of whether the current drag was initiated by a WebTextView, 395 // so that we know not to hide the cursor 396 boolean mDragFromTextInput; 397 398 // Whether or not to draw the cursor ring. 399 private boolean mDrawCursorRing = true; 400 401 // true if onPause has been called (and not onResume) 402 private boolean mIsPaused; 403 404 /** 405 * Customizable constant 406 */ 407 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 408 private int mTouchSlopSquare; 409 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 410 private int mDoubleTapSlopSquare; 411 // pre-computed density adjusted navigation slop 412 private int mNavSlop; 413 // This should be ViewConfiguration.getTapTimeout() 414 // But system time out is 100ms, which is too short for the browser. 415 // In the browser, if it switches out of tap too soon, jump tap won't work. 416 private static final int TAP_TIMEOUT = 200; 417 // This should be ViewConfiguration.getLongPressTimeout() 418 // But system time out is 500ms, which is too short for the browser. 419 // With a short timeout, it's difficult to treat trigger a short press. 420 private static final int LONG_PRESS_TIMEOUT = 1000; 421 // needed to avoid flinging after a pause of no movement 422 private static final int MIN_FLING_TIME = 250; 423 // draw unfiltered after drag is held without movement 424 private static final int MOTIONLESS_TIME = 100; 425 // The time that the Zoom Controls are visible before fading away 426 private static final long ZOOM_CONTROLS_TIMEOUT = 427 ViewConfiguration.getZoomControlsTimeout(); 428 // The amount of content to overlap between two screens when going through 429 // pages with the space bar, in pixels. 430 private static final int PAGE_SCROLL_OVERLAP = 24; 431 432 /** 433 * These prevent calling requestLayout if either dimension is fixed. This 434 * depends on the layout parameters and the measure specs. 435 */ 436 boolean mWidthCanMeasure; 437 boolean mHeightCanMeasure; 438 439 // Remember the last dimensions we sent to the native side so we can avoid 440 // sending the same dimensions more than once. 441 int mLastWidthSent; 442 int mLastHeightSent; 443 444 private int mContentWidth; // cache of value from WebViewCore 445 private int mContentHeight; // cache of value from WebViewCore 446 447 // Need to have the separate control for horizontal and vertical scrollbar 448 // style than the View's single scrollbar style 449 private boolean mOverlayHorizontalScrollbar = true; 450 private boolean mOverlayVerticalScrollbar = false; 451 452 // our standard speed. this way small distances will be traversed in less 453 // time than large distances, but we cap the duration, so that very large 454 // distances won't take too long to get there. 455 private static final int STD_SPEED = 480; // pixels per second 456 // time for the longest scroll animation 457 private static final int MAX_DURATION = 750; // milliseconds 458 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 459 private Scroller mScroller; 460 461 private boolean mWrapContent; 462 private static final int MOTIONLESS_FALSE = 0; 463 private static final int MOTIONLESS_PENDING = 1; 464 private static final int MOTIONLESS_TRUE = 2; 465 private int mHeldMotionless; 466 467 // whether support multi-touch 468 private boolean mSupportMultiTouch; 469 // use the framework's ScaleGestureDetector to handle multi-touch 470 private ScaleGestureDetector mScaleDetector; 471 // minimum scale change during multi-touch zoom 472 private static float PREVIEW_SCALE_INCREMENT = 0.01f; 473 474 // the anchor point in the document space where VIEW_SIZE_CHANGED should 475 // apply to 476 private int mAnchorX; 477 private int mAnchorY; 478 479 /** 480 * Private message ids 481 */ 482 private static final int REMEMBER_PASSWORD = 1; 483 private static final int NEVER_REMEMBER_PASSWORD = 2; 484 private static final int SWITCH_TO_SHORTPRESS = 3; 485 private static final int SWITCH_TO_LONGPRESS = 4; 486 private static final int RELEASE_SINGLE_TAP = 5; 487 private static final int REQUEST_FORM_DATA = 6; 488 private static final int RESUME_WEBCORE_PRIORITY = 7; 489 private static final int DRAG_HELD_MOTIONLESS = 8; 490 private static final int AWAKEN_SCROLL_BARS = 9; 491 492 //! arg1=x, arg2=y 493 static final int SCROLL_TO_MSG_ID = 10; 494 static final int SCROLL_BY_MSG_ID = 11; 495 //! arg1=x, arg2=y 496 static final int SPAWN_SCROLL_TO_MSG_ID = 12; 497 //! arg1=x, arg2=y 498 static final int SYNC_SCROLL_TO_MSG_ID = 13; 499 static final int NEW_PICTURE_MSG_ID = 14; 500 static final int UPDATE_TEXT_ENTRY_MSG_ID = 15; 501 static final int WEBCORE_INITIALIZED_MSG_ID = 16; 502 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 17; 503 static final int UPDATE_ZOOM_RANGE = 18; 504 static final int MOVE_OUT_OF_PLUGIN = 19; 505 static final int CLEAR_TEXT_ENTRY = 20; 506 static final int UPDATE_TEXT_SELECTION_MSG_ID = 21; 507 static final int SHOW_RECT_MSG_ID = 22; 508 static final int LONG_PRESS_CENTER = 23; 509 static final int PREVENT_TOUCH_ID = 24; 510 static final int WEBCORE_NEED_TOUCH_EVENTS = 25; 511 // obj=Rect in doc coordinates 512 static final int INVAL_RECT_MSG_ID = 26; 513 static final int REQUEST_KEYBOARD = 27; 514 static final int DO_MOTION_UP = 28; 515 static final int SHOW_FULLSCREEN = 29; 516 static final int HIDE_FULLSCREEN = 30; 517 static final int DOM_FOCUS_CHANGED = 31; 518 static final int IMMEDIATE_REPAINT_MSG_ID = 32; 519 static final int SET_ROOT_LAYER_MSG_ID = 33; 520 static final int RETURN_LABEL = 34; 521 static final int FIND_AGAIN = 35; 522 523 static final String[] HandlerDebugString = { 524 "REMEMBER_PASSWORD", // = 1; 525 "NEVER_REMEMBER_PASSWORD", // = 2; 526 "SWITCH_TO_SHORTPRESS", // = 3; 527 "SWITCH_TO_LONGPRESS", // = 4; 528 "RELEASE_SINGLE_TAP", // = 5; 529 "REQUEST_FORM_DATA", // = 6; 530 "RESUME_WEBCORE_PRIORITY", // = 7; 531 "DRAG_HELD_MOTIONLESS", // = 8; 532 "AWAKEN_SCROLL_BARS", // = 9; 533 "SCROLL_TO_MSG_ID", // = 10; 534 "SCROLL_BY_MSG_ID", // = 11; 535 "SPAWN_SCROLL_TO_MSG_ID", // = 12; 536 "SYNC_SCROLL_TO_MSG_ID", // = 13; 537 "NEW_PICTURE_MSG_ID", // = 14; 538 "UPDATE_TEXT_ENTRY_MSG_ID", // = 15; 539 "WEBCORE_INITIALIZED_MSG_ID", // = 16; 540 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 17; 541 "UPDATE_ZOOM_RANGE", // = 18; 542 "MOVE_OUT_OF_PLUGIN", // = 19; 543 "CLEAR_TEXT_ENTRY", // = 20; 544 "UPDATE_TEXT_SELECTION_MSG_ID", // = 21; 545 "SHOW_RECT_MSG_ID", // = 22; 546 "LONG_PRESS_CENTER", // = 23; 547 "PREVENT_TOUCH_ID", // = 24; 548 "WEBCORE_NEED_TOUCH_EVENTS", // = 25; 549 "INVAL_RECT_MSG_ID", // = 26; 550 "REQUEST_KEYBOARD", // = 27; 551 "DO_MOTION_UP", // = 28; 552 "SHOW_FULLSCREEN", // = 29; 553 "HIDE_FULLSCREEN", // = 30; 554 "DOM_FOCUS_CHANGED", // = 31; 555 "IMMEDIATE_REPAINT_MSG_ID", // = 32; 556 "SET_ROOT_LAYER_MSG_ID", // = 33; 557 "RETURN_LABEL", // = 34; 558 "FIND_AGAIN" // = 35; 559 }; 560 561 // If the site doesn't use the viewport meta tag to specify the viewport, 562 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 563 static final int DEFAULT_VIEWPORT_WIDTH = 800; 564 565 // normally we try to fit the content to the minimum preferred width 566 // calculated by the Webkit. To avoid the bad behavior when some site's 567 // minimum preferred width keeps growing when changing the viewport width or 568 // the minimum preferred width is huge, an upper limit is needed. 569 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 570 571 // default scale limit. Depending on the display density 572 private static float DEFAULT_MAX_ZOOM_SCALE; 573 private static float DEFAULT_MIN_ZOOM_SCALE; 574 // scale limit, which can be set through viewport meta tag in the web page 575 private float mMaxZoomScale; 576 private float mMinZoomScale; 577 private boolean mMinZoomScaleFixed = true; 578 579 // initial scale in percent. 0 means using default. 580 private int mInitialScaleInPercent = 0; 581 582 // while in the zoom overview mode, the page's width is fully fit to the 583 // current window. The page is alive, in another words, you can click to 584 // follow the links. Double tap will toggle between zoom overview mode and 585 // the last zoom scale. 586 boolean mInZoomOverview = false; 587 588 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 589 // engadget always have wider mContentWidth no matter what viewport size is. 590 int mZoomOverviewWidth = DEFAULT_VIEWPORT_WIDTH; 591 float mTextWrapScale; 592 593 // default scale. Depending on the display density. 594 static int DEFAULT_SCALE_PERCENT; 595 private float mDefaultScale; 596 597 // set to true temporarily during ScaleGesture triggered zoom 598 private boolean mPreviewZoomOnly = false; 599 600 // computed scale and inverse, from mZoomWidth. 601 private float mActualScale; 602 private float mInvActualScale; 603 // if this is non-zero, it is used on drawing rather than mActualScale 604 private float mZoomScale; 605 private float mInvInitialZoomScale; 606 private float mInvFinalZoomScale; 607 private int mInitialScrollX; 608 private int mInitialScrollY; 609 private long mZoomStart; 610 private static final int ZOOM_ANIMATION_LENGTH = 500; 611 612 private boolean mUserScroll = false; 613 614 private int mSnapScrollMode = SNAP_NONE; 615 private static final int SNAP_NONE = 0; 616 private static final int SNAP_LOCK = 1; // not a separate state 617 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 618 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 619 private boolean mSnapPositive; 620 621 // Used to match key downs and key ups 622 private boolean mGotKeyDown; 623 624 /* package */ static boolean mLogEvent = true; 625 626 // for event log 627 private long mLastTouchUpTime = 0; 628 629 /** 630 * URI scheme for telephone number 631 */ 632 public static final String SCHEME_TEL = "tel:"; 633 /** 634 * URI scheme for email address 635 */ 636 public static final String SCHEME_MAILTO = "mailto:"; 637 /** 638 * URI scheme for map address 639 */ 640 public static final String SCHEME_GEO = "geo:0,0?q="; 641 642 private int mBackgroundColor = Color.WHITE; 643 644 // Used to notify listeners of a new picture. 645 private PictureListener mPictureListener; 646 /** 647 * Interface to listen for new pictures as they change. 648 */ 649 public interface PictureListener { 650 /** 651 * Notify the listener that the picture has changed. 652 * @param view The WebView that owns the picture. 653 * @param picture The new picture. 654 */ 655 public void onNewPicture(WebView view, Picture picture); 656 } 657 658 // FIXME: Want to make this public, but need to change the API file. 659 public /*static*/ class HitTestResult { 660 /** 661 * Default HitTestResult, where the target is unknown 662 */ 663 public static final int UNKNOWN_TYPE = 0; 664 /** 665 * HitTestResult for hitting a HTML::a tag 666 */ 667 public static final int ANCHOR_TYPE = 1; 668 /** 669 * HitTestResult for hitting a phone number 670 */ 671 public static final int PHONE_TYPE = 2; 672 /** 673 * HitTestResult for hitting a map address 674 */ 675 public static final int GEO_TYPE = 3; 676 /** 677 * HitTestResult for hitting an email address 678 */ 679 public static final int EMAIL_TYPE = 4; 680 /** 681 * HitTestResult for hitting an HTML::img tag 682 */ 683 public static final int IMAGE_TYPE = 5; 684 /** 685 * HitTestResult for hitting a HTML::a tag which contains HTML::img 686 */ 687 public static final int IMAGE_ANCHOR_TYPE = 6; 688 /** 689 * HitTestResult for hitting a HTML::a tag with src=http 690 */ 691 public static final int SRC_ANCHOR_TYPE = 7; 692 /** 693 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 694 */ 695 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 696 /** 697 * HitTestResult for hitting an edit text area 698 */ 699 public static final int EDIT_TEXT_TYPE = 9; 700 701 private int mType; 702 private String mExtra; 703 704 HitTestResult() { 705 mType = UNKNOWN_TYPE; 706 } 707 708 private void setType(int type) { 709 mType = type; 710 } 711 712 private void setExtra(String extra) { 713 mExtra = extra; 714 } 715 716 public int getType() { 717 return mType; 718 } 719 720 public String getExtra() { 721 return mExtra; 722 } 723 } 724 725 // The View containing the zoom controls 726 private ExtendedZoomControls mZoomControls; 727 private Runnable mZoomControlRunnable; 728 729 private ZoomButtonsController mZoomButtonsController; 730 731 // These keep track of the center point of the zoom. They are used to 732 // determine the point around which we should zoom. 733 private float mZoomCenterX; 734 private float mZoomCenterY; 735 736 private ZoomButtonsController.OnZoomListener mZoomListener = 737 new ZoomButtonsController.OnZoomListener() { 738 739 public void onVisibilityChanged(boolean visible) { 740 if (visible) { 741 switchOutDrawHistory(); 742 // Bring back the hidden zoom controls. 743 mZoomButtonsController.getZoomControls().setVisibility( 744 View.VISIBLE); 745 updateZoomButtonsEnabled(); 746 } 747 } 748 749 public void onZoom(boolean zoomIn) { 750 if (zoomIn) { 751 zoomIn(); 752 } else { 753 zoomOut(); 754 } 755 756 updateZoomButtonsEnabled(); 757 } 758 }; 759 760 /** 761 * Construct a new WebView with a Context object. 762 * @param context A Context object used to access application assets. 763 */ 764 public WebView(Context context) { 765 this(context, null); 766 } 767 768 /** 769 * Construct a new WebView with layout parameters. 770 * @param context A Context object used to access application assets. 771 * @param attrs An AttributeSet passed to our parent. 772 */ 773 public WebView(Context context, AttributeSet attrs) { 774 this(context, attrs, com.android.internal.R.attr.webViewStyle); 775 } 776 777 /** 778 * Construct a new WebView with layout parameters and a default style. 779 * @param context A Context object used to access application assets. 780 * @param attrs An AttributeSet passed to our parent. 781 * @param defStyle The default style resource ID. 782 */ 783 public WebView(Context context, AttributeSet attrs, int defStyle) { 784 this(context, attrs, defStyle, null); 785 } 786 787 /** 788 * Construct a new WebView with layout parameters, a default style and a set 789 * of custom Javscript interfaces to be added to the WebView at initialization 790 * time. This guarantees that these interfaces will be available when the JS 791 * context is initialized. 792 * @param context A Context object used to access application assets. 793 * @param attrs An AttributeSet passed to our parent. 794 * @param defStyle The default style resource ID. 795 * @param javascriptInterfaces is a Map of intareface names, as keys, and 796 * object implementing those interfaces, as values. 797 * @hide pending API council approval. 798 */ 799 protected WebView(Context context, AttributeSet attrs, int defStyle, 800 Map<String, Object> javascriptInterfaces) { 801 super(context, attrs, defStyle); 802 init(); 803 804 mCallbackProxy = new CallbackProxy(context, this); 805 mViewManager = new ViewManager(this); 806 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 807 mDatabase = WebViewDatabase.getInstance(context); 808 mScroller = new Scroller(context); 809 810 mZoomButtonsController = new ZoomButtonsController(this); 811 mZoomButtonsController.setOnZoomListener(mZoomListener); 812 // ZoomButtonsController positions the buttons at the bottom, but in 813 // the middle. Change their layout parameters so they appear on the 814 // right. 815 View controls = mZoomButtonsController.getZoomControls(); 816 ViewGroup.LayoutParams params = controls.getLayoutParams(); 817 if (params instanceof FrameLayout.LayoutParams) { 818 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 819 params; 820 frameParams.gravity = Gravity.RIGHT; 821 } 822 updateMultiTouchSupport(context); 823 } 824 825 void updateMultiTouchSupport(Context context) { 826 WebSettings settings = getSettings(); 827 mSupportMultiTouch = context.getPackageManager().hasSystemFeature( 828 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 829 && settings.supportZoom() && settings.getBuiltInZoomControls(); 830 if (mSupportMultiTouch && (mScaleDetector == null)) { 831 mScaleDetector = new ScaleGestureDetector(context, 832 new ScaleDetectorListener()); 833 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 834 mScaleDetector = null; 835 } 836 } 837 838 private void updateZoomButtonsEnabled() { 839 boolean canZoomIn = mActualScale < mMaxZoomScale; 840 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 841 if (!canZoomIn && !canZoomOut) { 842 // Hide the zoom in and out buttons, as well as the fit to page 843 // button, if the page cannot zoom 844 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 845 } else { 846 // Set each one individually, as a page may be able to zoom in 847 // or out. 848 mZoomButtonsController.setZoomInEnabled(canZoomIn); 849 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 850 } 851 } 852 853 private void init() { 854 setWillNotDraw(false); 855 setFocusable(true); 856 setFocusableInTouchMode(true); 857 setClickable(true); 858 setLongClickable(true); 859 860 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 861 int slop = configuration.getScaledTouchSlop(); 862 mTouchSlopSquare = slop * slop; 863 mMinLockSnapReverseDistance = slop; 864 slop = configuration.getScaledDoubleTapSlop(); 865 mDoubleTapSlopSquare = slop * slop; 866 final float density = getContext().getResources().getDisplayMetrics().density; 867 // use one line height, 16 based on our current default font, for how 868 // far we allow a touch be away from the edge of a link 869 mNavSlop = (int) (16 * density); 870 // density adjusted scale factors 871 DEFAULT_SCALE_PERCENT = (int) (100 * density); 872 mDefaultScale = density; 873 mActualScale = density; 874 mInvActualScale = 1 / density; 875 mTextWrapScale = density; 876 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 877 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 878 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 879 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 880 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 881 } 882 883 /* package */void updateDefaultZoomDensity(int zoomDensity) { 884 final float density = getContext().getResources().getDisplayMetrics().density 885 * 100 / zoomDensity; 886 if (Math.abs(density - mDefaultScale) > 0.01) { 887 float scaleFactor = density / mDefaultScale; 888 // adjust the limits 889 mNavSlop = (int) (16 * density); 890 DEFAULT_SCALE_PERCENT = (int) (100 * density); 891 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 892 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 893 mDefaultScale = density; 894 mMaxZoomScale *= scaleFactor; 895 mMinZoomScale *= scaleFactor; 896 setNewZoomScale(mActualScale * scaleFactor, true, false); 897 } 898 } 899 900 /* package */ boolean onSavePassword(String schemePlusHost, String username, 901 String password, final Message resumeMsg) { 902 boolean rVal = false; 903 if (resumeMsg == null) { 904 // null resumeMsg implies saving password silently 905 mDatabase.setUsernamePassword(schemePlusHost, username, password); 906 } else { 907 final Message remember = mPrivateHandler.obtainMessage( 908 REMEMBER_PASSWORD); 909 remember.getData().putString("host", schemePlusHost); 910 remember.getData().putString("username", username); 911 remember.getData().putString("password", password); 912 remember.obj = resumeMsg; 913 914 final Message neverRemember = mPrivateHandler.obtainMessage( 915 NEVER_REMEMBER_PASSWORD); 916 neverRemember.getData().putString("host", schemePlusHost); 917 neverRemember.getData().putString("username", username); 918 neverRemember.getData().putString("password", password); 919 neverRemember.obj = resumeMsg; 920 921 new AlertDialog.Builder(getContext()) 922 .setTitle(com.android.internal.R.string.save_password_label) 923 .setMessage(com.android.internal.R.string.save_password_message) 924 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 925 new DialogInterface.OnClickListener() { 926 public void onClick(DialogInterface dialog, int which) { 927 resumeMsg.sendToTarget(); 928 } 929 }) 930 .setNeutralButton(com.android.internal.R.string.save_password_remember, 931 new DialogInterface.OnClickListener() { 932 public void onClick(DialogInterface dialog, int which) { 933 remember.sendToTarget(); 934 } 935 }) 936 .setNegativeButton(com.android.internal.R.string.save_password_never, 937 new DialogInterface.OnClickListener() { 938 public void onClick(DialogInterface dialog, int which) { 939 neverRemember.sendToTarget(); 940 } 941 }) 942 .setOnCancelListener(new OnCancelListener() { 943 public void onCancel(DialogInterface dialog) { 944 resumeMsg.sendToTarget(); 945 } 946 }).show(); 947 // Return true so that WebViewCore will pause while the dialog is 948 // up. 949 rVal = true; 950 } 951 return rVal; 952 } 953 954 @Override 955 public void setScrollBarStyle(int style) { 956 if (style == View.SCROLLBARS_INSIDE_INSET 957 || style == View.SCROLLBARS_OUTSIDE_INSET) { 958 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 959 } else { 960 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 961 } 962 super.setScrollBarStyle(style); 963 } 964 965 /** 966 * Specify whether the horizontal scrollbar has overlay style. 967 * @param overlay TRUE if horizontal scrollbar should have overlay style. 968 */ 969 public void setHorizontalScrollbarOverlay(boolean overlay) { 970 mOverlayHorizontalScrollbar = overlay; 971 } 972 973 /** 974 * Specify whether the vertical scrollbar has overlay style. 975 * @param overlay TRUE if vertical scrollbar should have overlay style. 976 */ 977 public void setVerticalScrollbarOverlay(boolean overlay) { 978 mOverlayVerticalScrollbar = overlay; 979 } 980 981 /** 982 * Return whether horizontal scrollbar has overlay style 983 * @return TRUE if horizontal scrollbar has overlay style. 984 */ 985 public boolean overlayHorizontalScrollbar() { 986 return mOverlayHorizontalScrollbar; 987 } 988 989 /** 990 * Return whether vertical scrollbar has overlay style 991 * @return TRUE if vertical scrollbar has overlay style. 992 */ 993 public boolean overlayVerticalScrollbar() { 994 return mOverlayVerticalScrollbar; 995 } 996 997 /* 998 * Return the width of the view where the content of WebView should render 999 * to. 1000 * Note: this can be called from WebCoreThread. 1001 */ 1002 /* package */ int getViewWidth() { 1003 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1004 return getWidth(); 1005 } else { 1006 return getWidth() - getVerticalScrollbarWidth(); 1007 } 1008 } 1009 1010 /* 1011 * returns the height of the titlebarview (if any). Does not care about 1012 * scrolling 1013 */ 1014 private int getTitleHeight() { 1015 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1016 } 1017 1018 /* 1019 * Return the amount of the titlebarview (if any) that is visible 1020 */ 1021 private int getVisibleTitleHeight() { 1022 return Math.max(getTitleHeight() - mScrollY, 0); 1023 } 1024 1025 /* 1026 * Return the height of the view where the content of WebView should render 1027 * to. Note that this excludes mTitleBar, if there is one. 1028 * Note: this can be called from WebCoreThread. 1029 */ 1030 /* package */ int getViewHeight() { 1031 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1032 } 1033 1034 private int getViewHeightWithTitle() { 1035 int height = getHeight(); 1036 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1037 height -= getHorizontalScrollbarHeight(); 1038 } 1039 return height; 1040 } 1041 1042 /** 1043 * @return The SSL certificate for the main top-level page or null if 1044 * there is no certificate (the site is not secure). 1045 */ 1046 public SslCertificate getCertificate() { 1047 return mCertificate; 1048 } 1049 1050 /** 1051 * Sets the SSL certificate for the main top-level page. 1052 */ 1053 public void setCertificate(SslCertificate certificate) { 1054 // here, the certificate can be null (if the site is not secure) 1055 mCertificate = certificate; 1056 } 1057 1058 //------------------------------------------------------------------------- 1059 // Methods called by activity 1060 //------------------------------------------------------------------------- 1061 1062 /** 1063 * Save the username and password for a particular host in the WebView's 1064 * internal database. 1065 * @param host The host that required the credentials. 1066 * @param username The username for the given host. 1067 * @param password The password for the given host. 1068 */ 1069 public void savePassword(String host, String username, String password) { 1070 mDatabase.setUsernamePassword(host, username, password); 1071 } 1072 1073 /** 1074 * Set the HTTP authentication credentials for a given host and realm. 1075 * 1076 * @param host The host for the credentials. 1077 * @param realm The realm for the credentials. 1078 * @param username The username for the password. If it is null, it means 1079 * password can't be saved. 1080 * @param password The password 1081 */ 1082 public void setHttpAuthUsernamePassword(String host, String realm, 1083 String username, String password) { 1084 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1085 } 1086 1087 /** 1088 * Retrieve the HTTP authentication username and password for a given 1089 * host & realm pair 1090 * 1091 * @param host The host for which the credentials apply. 1092 * @param realm The realm for which the credentials apply. 1093 * @return String[] if found, String[0] is username, which can be null and 1094 * String[1] is password. Return null if it can't find anything. 1095 */ 1096 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1097 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1098 } 1099 1100 /** 1101 * Destroy the internal state of the WebView. This method should be called 1102 * after the WebView has been removed from the view system. No other 1103 * methods may be called on a WebView after destroy. 1104 */ 1105 public void destroy() { 1106 clearTextEntry(); 1107 if (mWebViewCore != null) { 1108 // Set the handlers to null before destroying WebViewCore so no 1109 // more messages will be posted. 1110 mCallbackProxy.setWebViewClient(null); 1111 mCallbackProxy.setWebChromeClient(null); 1112 // Tell WebViewCore to destroy itself 1113 WebViewCore webViewCore = mWebViewCore; 1114 mWebViewCore = null; // prevent using partial webViewCore 1115 webViewCore.destroy(); 1116 // Remove any pending messages that might not be serviced yet. 1117 mPrivateHandler.removeCallbacksAndMessages(null); 1118 mCallbackProxy.removeCallbacksAndMessages(null); 1119 // Wake up the WebCore thread just in case it is waiting for a 1120 // javascript dialog. 1121 synchronized (mCallbackProxy) { 1122 mCallbackProxy.notify(); 1123 } 1124 } 1125 if (mNativeClass != 0) { 1126 nativeDestroy(); 1127 mNativeClass = 0; 1128 } 1129 } 1130 1131 /** 1132 * Enables platform notifications of data state and proxy changes. 1133 */ 1134 public static void enablePlatformNotifications() { 1135 Network.enablePlatformNotifications(); 1136 } 1137 1138 /** 1139 * If platform notifications are enabled, this should be called 1140 * from the Activity's onPause() or onStop(). 1141 */ 1142 public static void disablePlatformNotifications() { 1143 Network.disablePlatformNotifications(); 1144 } 1145 1146 /** 1147 * Sets JavaScript engine flags. 1148 * 1149 * @param flags JS engine flags in a String 1150 * 1151 * @hide pending API solidification 1152 */ 1153 public void setJsFlags(String flags) { 1154 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1155 } 1156 1157 /** 1158 * Inform WebView of the network state. This is used to set 1159 * the javascript property window.navigator.isOnline and 1160 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1161 * @param networkUp boolean indicating if network is available 1162 */ 1163 public void setNetworkAvailable(boolean networkUp) { 1164 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1165 networkUp ? 1 : 0, 0); 1166 } 1167 1168 /** 1169 * Inform WebView about the current network type. 1170 * {@hide} 1171 */ 1172 public void setNetworkType(String type, String subtype) { 1173 Map<String, String> map = new HashMap<String, String>(); 1174 map.put("type", type); 1175 map.put("subtype", subtype); 1176 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1177 } 1178 /** 1179 * Save the state of this WebView used in 1180 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1181 * method no longer stores the display data for this WebView. The previous 1182 * behavior could potentially leak files if {@link #restoreState} was never 1183 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1184 * and restoring the display data. 1185 * @param outState The Bundle to store the WebView state. 1186 * @return The same copy of the back/forward list used to save the state. If 1187 * saveState fails, the returned list will be null. 1188 * @see #savePicture 1189 * @see #restorePicture 1190 */ 1191 public WebBackForwardList saveState(Bundle outState) { 1192 if (outState == null) { 1193 return null; 1194 } 1195 // We grab a copy of the back/forward list because a client of WebView 1196 // may have invalidated the history list by calling clearHistory. 1197 WebBackForwardList list = copyBackForwardList(); 1198 final int currentIndex = list.getCurrentIndex(); 1199 final int size = list.getSize(); 1200 // We should fail saving the state if the list is empty or the index is 1201 // not in a valid range. 1202 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1203 return null; 1204 } 1205 outState.putInt("index", currentIndex); 1206 // FIXME: This should just be a byte[][] instead of ArrayList but 1207 // Parcel.java does not have the code to handle multi-dimensional 1208 // arrays. 1209 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1210 for (int i = 0; i < size; i++) { 1211 WebHistoryItem item = list.getItemAtIndex(i); 1212 if (null == item) { 1213 // FIXME: this shouldn't happen 1214 // need to determine how item got set to null 1215 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1216 return null; 1217 } 1218 byte[] data = item.getFlattenedData(); 1219 if (data == null) { 1220 // It would be very odd to not have any data for a given history 1221 // item. And we will fail to rebuild the history list without 1222 // flattened data. 1223 return null; 1224 } 1225 history.add(data); 1226 } 1227 outState.putSerializable("history", history); 1228 if (mCertificate != null) { 1229 outState.putBundle("certificate", 1230 SslCertificate.saveState(mCertificate)); 1231 } 1232 return list; 1233 } 1234 1235 /** 1236 * Save the current display data to the Bundle given. Used in conjunction 1237 * with {@link #saveState}. 1238 * @param b A Bundle to store the display data. 1239 * @param dest The file to store the serialized picture data. Will be 1240 * overwritten with this WebView's picture data. 1241 * @return True if the picture was successfully saved. 1242 */ 1243 public boolean savePicture(Bundle b, File dest) { 1244 if (dest == null || b == null) { 1245 return false; 1246 } 1247 final Picture p = capturePicture(); 1248 try { 1249 final FileOutputStream out = new FileOutputStream(dest); 1250 p.writeToStream(out); 1251 out.close(); 1252 } catch (FileNotFoundException e){ 1253 e.printStackTrace(); 1254 } catch (IOException e) { 1255 e.printStackTrace(); 1256 } catch (RuntimeException e) { 1257 e.printStackTrace(); 1258 } 1259 if (dest.length() > 0) { 1260 b.putInt("scrollX", mScrollX); 1261 b.putInt("scrollY", mScrollY); 1262 b.putFloat("scale", mActualScale); 1263 b.putFloat("textwrapScale", mTextWrapScale); 1264 b.putBoolean("overview", mInZoomOverview); 1265 return true; 1266 } 1267 return false; 1268 } 1269 1270 /** 1271 * Restore the display data that was save in {@link #savePicture}. Used in 1272 * conjunction with {@link #restoreState}. 1273 * @param b A Bundle containing the saved display data. 1274 * @param src The file where the picture data was stored. 1275 * @return True if the picture was successfully restored. 1276 */ 1277 public boolean restorePicture(Bundle b, File src) { 1278 if (src == null || b == null) { 1279 return false; 1280 } 1281 if (src.exists()) { 1282 Picture p = null; 1283 try { 1284 final FileInputStream in = new FileInputStream(src); 1285 p = Picture.createFromStream(in); 1286 in.close(); 1287 } catch (FileNotFoundException e){ 1288 e.printStackTrace(); 1289 } catch (RuntimeException e) { 1290 e.printStackTrace(); 1291 } catch (IOException e) { 1292 e.printStackTrace(); 1293 } 1294 if (p != null) { 1295 int sx = b.getInt("scrollX", 0); 1296 int sy = b.getInt("scrollY", 0); 1297 float scale = b.getFloat("scale", 1.0f); 1298 mDrawHistory = true; 1299 mHistoryPicture = p; 1300 mScrollX = sx; 1301 mScrollY = sy; 1302 mHistoryWidth = Math.round(p.getWidth() * scale); 1303 mHistoryHeight = Math.round(p.getHeight() * scale); 1304 // as getWidth() / getHeight() of the view are not 1305 // available yet, set up mActualScale, so that when 1306 // onSizeChanged() is called, the rest will be set 1307 // correctly 1308 mActualScale = scale; 1309 mTextWrapScale = b.getFloat("textwrapScale", scale); 1310 mInZoomOverview = b.getBoolean("overview"); 1311 invalidate(); 1312 return true; 1313 } 1314 } 1315 return false; 1316 } 1317 1318 /** 1319 * Restore the state of this WebView from the given map used in 1320 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1321 * be called to restore the state of the WebView before using the object. If 1322 * it is called after the WebView has had a chance to build state (load 1323 * pages, create a back/forward list, etc.) there may be undesirable 1324 * side-effects. Please note that this method no longer restores the 1325 * display data for this WebView. See {@link #savePicture} and {@link 1326 * #restorePicture} for saving and restoring the display data. 1327 * @param inState The incoming Bundle of state. 1328 * @return The restored back/forward list or null if restoreState failed. 1329 * @see #savePicture 1330 * @see #restorePicture 1331 */ 1332 public WebBackForwardList restoreState(Bundle inState) { 1333 WebBackForwardList returnList = null; 1334 if (inState == null) { 1335 return returnList; 1336 } 1337 if (inState.containsKey("index") && inState.containsKey("history")) { 1338 mCertificate = SslCertificate.restoreState( 1339 inState.getBundle("certificate")); 1340 1341 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1342 final int index = inState.getInt("index"); 1343 // We can't use a clone of the list because we need to modify the 1344 // shared copy, so synchronize instead to prevent concurrent 1345 // modifications. 1346 synchronized (list) { 1347 final List<byte[]> history = 1348 (List<byte[]>) inState.getSerializable("history"); 1349 final int size = history.size(); 1350 // Check the index bounds so we don't crash in native code while 1351 // restoring the history index. 1352 if (index < 0 || index >= size) { 1353 return null; 1354 } 1355 for (int i = 0; i < size; i++) { 1356 byte[] data = history.remove(0); 1357 if (data == null) { 1358 // If we somehow have null data, we cannot reconstruct 1359 // the item and thus our history list cannot be rebuilt. 1360 return null; 1361 } 1362 WebHistoryItem item = new WebHistoryItem(data); 1363 list.addHistoryItem(item); 1364 } 1365 // Grab the most recent copy to return to the caller. 1366 returnList = copyBackForwardList(); 1367 // Update the copy to have the correct index. 1368 returnList.setCurrentIndex(index); 1369 } 1370 // Remove all pending messages because we are restoring previous 1371 // state. 1372 mWebViewCore.removeMessages(); 1373 // Send a restore state message. 1374 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1375 } 1376 return returnList; 1377 } 1378 1379 /** 1380 * Load the given url with the extra headers. 1381 * @param url The url of the resource to load. 1382 * @param extraHeaders The extra headers sent with this url. This should not 1383 * include the common headers like "user-agent". If it does, it 1384 * will be replaced by the intrinsic value of the WebView. 1385 */ 1386 public void loadUrl(String url, Map<String, String> extraHeaders) { 1387 switchOutDrawHistory(); 1388 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1389 arg.mUrl = url; 1390 arg.mExtraHeaders = extraHeaders; 1391 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1392 clearTextEntry(); 1393 } 1394 1395 /** 1396 * Load the given url. 1397 * @param url The url of the resource to load. 1398 */ 1399 public void loadUrl(String url) { 1400 if (url == null) { 1401 return; 1402 } 1403 loadUrl(url, null); 1404 } 1405 1406 /** 1407 * Load the url with postData using "POST" method into the WebView. If url 1408 * is not a network url, it will be loaded with {link 1409 * {@link #loadUrl(String)} instead. 1410 * 1411 * @param url The url of the resource to load. 1412 * @param postData The data will be passed to "POST" request. 1413 */ 1414 public void postUrl(String url, byte[] postData) { 1415 if (URLUtil.isNetworkUrl(url)) { 1416 switchOutDrawHistory(); 1417 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1418 arg.mUrl = url; 1419 arg.mPostData = postData; 1420 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1421 clearTextEntry(); 1422 } else { 1423 loadUrl(url); 1424 } 1425 } 1426 1427 /** 1428 * Load the given data into the WebView. This will load the data into 1429 * WebView using the data: scheme. Content loaded through this mechanism 1430 * does not have the ability to load content from the network. 1431 * @param data A String of data in the given encoding. 1432 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1433 * @param encoding The encoding of the data. i.e. utf-8, base64 1434 */ 1435 public void loadData(String data, String mimeType, String encoding) { 1436 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1437 } 1438 1439 /** 1440 * Load the given data into the WebView, use the provided URL as the base 1441 * URL for the content. The base URL is the URL that represents the page 1442 * that is loaded through this interface. As such, it is used for the 1443 * history entry and to resolve any relative URLs. The failUrl is used if 1444 * browser fails to load the data provided. If it is empty or null, and the 1445 * load fails, then no history entry is created. 1446 * <p> 1447 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1448 * files through "file:///android_asset/" for the sub resources is more 1449 * restricted. If you provide null or empty string as baseUrl, you won't be 1450 * able to access asset files. If the baseUrl is anything other than 1451 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1452 * sub resources. 1453 * 1454 * @param baseUrl Url to resolve relative paths with, if null defaults to 1455 * "about:blank" 1456 * @param data A String of data in the given encoding. 1457 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1458 * defaults to "text/html" 1459 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1460 * @param failUrl URL to use if the content fails to load or null. 1461 */ 1462 public void loadDataWithBaseURL(String baseUrl, String data, 1463 String mimeType, String encoding, String failUrl) { 1464 1465 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1466 loadData(data, mimeType, encoding); 1467 return; 1468 } 1469 switchOutDrawHistory(); 1470 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1471 arg.mBaseUrl = baseUrl; 1472 arg.mData = data; 1473 arg.mMimeType = mimeType; 1474 arg.mEncoding = encoding; 1475 arg.mFailUrl = failUrl; 1476 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1477 clearTextEntry(); 1478 } 1479 1480 /** 1481 * Stop the current load. 1482 */ 1483 public void stopLoading() { 1484 // TODO: should we clear all the messages in the queue before sending 1485 // STOP_LOADING? 1486 switchOutDrawHistory(); 1487 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1488 } 1489 1490 /** 1491 * Reload the current url. 1492 */ 1493 public void reload() { 1494 clearTextEntry(); 1495 switchOutDrawHistory(); 1496 mWebViewCore.sendMessage(EventHub.RELOAD); 1497 } 1498 1499 /** 1500 * Return true if this WebView has a back history item. 1501 * @return True iff this WebView has a back history item. 1502 */ 1503 public boolean canGoBack() { 1504 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1505 synchronized (l) { 1506 if (l.getClearPending()) { 1507 return false; 1508 } else { 1509 return l.getCurrentIndex() > 0; 1510 } 1511 } 1512 } 1513 1514 /** 1515 * Go back in the history of this WebView. 1516 */ 1517 public void goBack() { 1518 goBackOrForward(-1); 1519 } 1520 1521 /** 1522 * Return true if this WebView has a forward history item. 1523 * @return True iff this Webview has a forward history item. 1524 */ 1525 public boolean canGoForward() { 1526 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1527 synchronized (l) { 1528 if (l.getClearPending()) { 1529 return false; 1530 } else { 1531 return l.getCurrentIndex() < l.getSize() - 1; 1532 } 1533 } 1534 } 1535 1536 /** 1537 * Go forward in the history of this WebView. 1538 */ 1539 public void goForward() { 1540 goBackOrForward(1); 1541 } 1542 1543 /** 1544 * Return true if the page can go back or forward the given 1545 * number of steps. 1546 * @param steps The negative or positive number of steps to move the 1547 * history. 1548 */ 1549 public boolean canGoBackOrForward(int steps) { 1550 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1551 synchronized (l) { 1552 if (l.getClearPending()) { 1553 return false; 1554 } else { 1555 int newIndex = l.getCurrentIndex() + steps; 1556 return newIndex >= 0 && newIndex < l.getSize(); 1557 } 1558 } 1559 } 1560 1561 /** 1562 * Go to the history item that is the number of steps away from 1563 * the current item. Steps is negative if backward and positive 1564 * if forward. 1565 * @param steps The number of steps to take back or forward in the back 1566 * forward list. 1567 */ 1568 public void goBackOrForward(int steps) { 1569 goBackOrForward(steps, false); 1570 } 1571 1572 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1573 // every time we go back or forward, we want to reset the 1574 // WebView certificate: 1575 // if the new site is secure, we will reload it and get a 1576 // new certificate set; 1577 // if the new site is not secure, the certificate must be 1578 // null, and that will be the case 1579 mCertificate = null; 1580 if (steps != 0) { 1581 clearTextEntry(); 1582 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1583 ignoreSnapshot ? 1 : 0); 1584 } 1585 } 1586 1587 private boolean extendScroll(int y) { 1588 int finalY = mScroller.getFinalY(); 1589 int newY = pinLocY(finalY + y); 1590 if (newY == finalY) return false; 1591 mScroller.setFinalY(newY); 1592 mScroller.extendDuration(computeDuration(0, y)); 1593 return true; 1594 } 1595 1596 /** 1597 * Scroll the contents of the view up by half the view size 1598 * @param top true to jump to the top of the page 1599 * @return true if the page was scrolled 1600 */ 1601 public boolean pageUp(boolean top) { 1602 if (mNativeClass == 0) { 1603 return false; 1604 } 1605 nativeClearCursor(); // start next trackball movement from page edge 1606 if (top) { 1607 // go to the top of the document 1608 return pinScrollTo(mScrollX, 0, true, 0); 1609 } 1610 // Page up 1611 int h = getHeight(); 1612 int y; 1613 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1614 y = -h + PAGE_SCROLL_OVERLAP; 1615 } else { 1616 y = -h / 2; 1617 } 1618 mUserScroll = true; 1619 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1620 : extendScroll(y); 1621 } 1622 1623 /** 1624 * Scroll the contents of the view down by half the page size 1625 * @param bottom true to jump to bottom of page 1626 * @return true if the page was scrolled 1627 */ 1628 public boolean pageDown(boolean bottom) { 1629 if (mNativeClass == 0) { 1630 return false; 1631 } 1632 nativeClearCursor(); // start next trackball movement from page edge 1633 if (bottom) { 1634 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1635 } 1636 // Page down. 1637 int h = getHeight(); 1638 int y; 1639 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1640 y = h - PAGE_SCROLL_OVERLAP; 1641 } else { 1642 y = h / 2; 1643 } 1644 mUserScroll = true; 1645 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1646 : extendScroll(y); 1647 } 1648 1649 /** 1650 * Clear the view so that onDraw() will draw nothing but white background, 1651 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1652 */ 1653 public void clearView() { 1654 mContentWidth = 0; 1655 mContentHeight = 0; 1656 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1657 } 1658 1659 /** 1660 * Return a new picture that captures the current display of the webview. 1661 * This is a copy of the display, and will be unaffected if the webview 1662 * later loads a different URL. 1663 * 1664 * @return a picture containing the current contents of the view. Note this 1665 * picture is of the entire document, and is not restricted to the 1666 * bounds of the view. 1667 */ 1668 public Picture capturePicture() { 1669 if (null == mWebViewCore) return null; // check for out of memory tab 1670 return mWebViewCore.copyContentPicture(); 1671 } 1672 1673 /** 1674 * Return true if the browser is displaying a TextView for text input. 1675 */ 1676 private boolean inEditingMode() { 1677 return mWebTextView != null && mWebTextView.getParent() != null 1678 && mWebTextView.hasFocus(); 1679 } 1680 1681 private void clearTextEntry() { 1682 if (inEditingMode()) { 1683 mWebTextView.remove(); 1684 } 1685 } 1686 1687 /** 1688 * Return the current scale of the WebView 1689 * @return The current scale. 1690 */ 1691 public float getScale() { 1692 return mActualScale; 1693 } 1694 1695 /** 1696 * Set the initial scale for the WebView. 0 means default. If 1697 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1698 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1699 * WebView starts will this value as initial scale. 1700 * 1701 * @param scaleInPercent The initial scale in percent. 1702 */ 1703 public void setInitialScale(int scaleInPercent) { 1704 mInitialScaleInPercent = scaleInPercent; 1705 } 1706 1707 /** 1708 * Invoke the graphical zoom picker widget for this WebView. This will 1709 * result in the zoom widget appearing on the screen to control the zoom 1710 * level of this WebView. 1711 */ 1712 public void invokeZoomPicker() { 1713 if (!getSettings().supportZoom()) { 1714 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1715 return; 1716 } 1717 clearTextEntry(); 1718 if (getSettings().getBuiltInZoomControls()) { 1719 mZoomButtonsController.setVisible(true); 1720 } else { 1721 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1722 mPrivateHandler.postDelayed(mZoomControlRunnable, 1723 ZOOM_CONTROLS_TIMEOUT); 1724 } 1725 } 1726 1727 /** 1728 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1729 * is found and the anchor has a non-javascript url, the HitTestResult type 1730 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1731 * anchor does not have a url or if it is a javascript url, the type will 1732 * be UNKNOWN_TYPE and the url has to be retrieved through 1733 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1734 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1735 * the "extra" field. A type of 1736 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1737 * a child node. If a phone number is found, the HitTestResult type is set 1738 * to PHONE_TYPE and the phone number is set in the "extra" field of 1739 * HitTestResult. If a map address is found, the HitTestResult type is set 1740 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1741 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1742 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1743 * HitTestResult type is set to UNKNOWN_TYPE. 1744 */ 1745 public HitTestResult getHitTestResult() { 1746 if (mNativeClass == 0) { 1747 return null; 1748 } 1749 1750 HitTestResult result = new HitTestResult(); 1751 if (nativeHasCursorNode()) { 1752 if (nativeCursorIsTextInput()) { 1753 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1754 } else { 1755 String text = nativeCursorText(); 1756 if (text != null) { 1757 if (text.startsWith(SCHEME_TEL)) { 1758 result.setType(HitTestResult.PHONE_TYPE); 1759 result.setExtra(text.substring(SCHEME_TEL.length())); 1760 } else if (text.startsWith(SCHEME_MAILTO)) { 1761 result.setType(HitTestResult.EMAIL_TYPE); 1762 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1763 } else if (text.startsWith(SCHEME_GEO)) { 1764 result.setType(HitTestResult.GEO_TYPE); 1765 result.setExtra(URLDecoder.decode(text 1766 .substring(SCHEME_GEO.length()))); 1767 } else if (nativeCursorIsAnchor()) { 1768 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1769 result.setExtra(text); 1770 } 1771 } 1772 } 1773 } 1774 int type = result.getType(); 1775 if (type == HitTestResult.UNKNOWN_TYPE 1776 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1777 // Now check to see if it is an image. 1778 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1779 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1780 String text = nativeImageURI(contentX, contentY); 1781 if (text != null) { 1782 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1783 HitTestResult.IMAGE_TYPE : 1784 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1785 result.setExtra(text); 1786 } 1787 } 1788 return result; 1789 } 1790 1791 // Called by JNI when the DOM has changed the focus. Clear the focus so 1792 // that new keys will go to the newly focused field 1793 private void domChangedFocus() { 1794 if (inEditingMode()) { 1795 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 1796 } 1797 } 1798 /** 1799 * Request the href of an anchor element due to getFocusNodePath returning 1800 * "href." If hrefMsg is null, this method returns immediately and does not 1801 * dispatch hrefMsg to its target. 1802 * 1803 * @param hrefMsg This message will be dispatched with the result of the 1804 * request as the data member with "url" as key. The result can 1805 * be null. 1806 */ 1807 // FIXME: API change required to change the name of this function. We now 1808 // look at the cursor node, and not the focus node. Also, what is 1809 // getFocusNodePath? 1810 public void requestFocusNodeHref(Message hrefMsg) { 1811 if (hrefMsg == null || mNativeClass == 0) { 1812 return; 1813 } 1814 if (nativeCursorIsAnchor()) { 1815 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1816 nativeCursorFramePointer(), nativeCursorNodePointer(), 1817 hrefMsg); 1818 } 1819 } 1820 1821 /** 1822 * Request the url of the image last touched by the user. msg will be sent 1823 * to its target with a String representing the url as its object. 1824 * 1825 * @param msg This message will be dispatched with the result of the request 1826 * as the data member with "url" as key. The result can be null. 1827 */ 1828 public void requestImageRef(Message msg) { 1829 if (0 == mNativeClass) return; // client isn't initialized 1830 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1831 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1832 String ref = nativeImageURI(contentX, contentY); 1833 Bundle data = msg.getData(); 1834 data.putString("url", ref); 1835 msg.setData(data); 1836 msg.sendToTarget(); 1837 } 1838 1839 private static int pinLoc(int x, int viewMax, int docMax) { 1840// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1841 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1842 // pin the short document to the top/left of the screen 1843 x = 0; 1844// Log.d(LOGTAG, "--- center " + x); 1845 } else if (x < 0) { 1846 x = 0; 1847// Log.d(LOGTAG, "--- zero"); 1848 } else if (x + viewMax > docMax) { 1849 x = docMax - viewMax; 1850// Log.d(LOGTAG, "--- pin " + x); 1851 } 1852 return x; 1853 } 1854 1855 // Expects x in view coordinates 1856 private int pinLocX(int x) { 1857 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1858 } 1859 1860 // Expects y in view coordinates 1861 private int pinLocY(int y) { 1862 int titleH = getTitleHeight(); 1863 // if the titlebar is still visible, just pin against 0 1864 if (y <= titleH) { 1865 return Math.max(y, 0); 1866 } 1867 // convert to 0-based coordinate (subtract the title height) 1868 // pin(), and then add the title height back in 1869 return pinLoc(y - titleH, getViewHeight(), 1870 computeVerticalScrollRange()) + titleH; 1871 } 1872 1873 /** 1874 * A title bar which is embedded in this WebView, and scrolls along with it 1875 * vertically, but not horizontally. 1876 */ 1877 private View mTitleBar; 1878 1879 /** 1880 * Since we draw the title bar ourselves, we removed the shadow from the 1881 * browser's activity. We do want a shadow at the bottom of the title bar, 1882 * or at the top of the screen if the title bar is not visible. This 1883 * drawable serves that purpose. 1884 */ 1885 private Drawable mTitleShadow; 1886 1887 /** 1888 * Add or remove a title bar to be embedded into the WebView, and scroll 1889 * along with it vertically, while remaining in view horizontally. Pass 1890 * null to remove the title bar from the WebView, and return to drawing 1891 * the WebView normally without translating to account for the title bar. 1892 * @hide 1893 */ 1894 public void setEmbeddedTitleBar(View v) { 1895 if (mTitleBar == v) return; 1896 if (mTitleBar != null) { 1897 removeView(mTitleBar); 1898 } 1899 if (null != v) { 1900 addView(v, new AbsoluteLayout.LayoutParams( 1901 ViewGroup.LayoutParams.MATCH_PARENT, 1902 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1903 if (mTitleShadow == null) { 1904 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1905 com.android.internal.R.drawable.title_bar_shadow); 1906 } 1907 } 1908 mTitleBar = v; 1909 } 1910 1911 /** 1912 * Given a distance in view space, convert it to content space. Note: this 1913 * does not reflect translation, just scaling, so this should not be called 1914 * with coordinates, but should be called for dimensions like width or 1915 * height. 1916 */ 1917 private int viewToContentDimension(int d) { 1918 return Math.round(d * mInvActualScale); 1919 } 1920 1921 /** 1922 * Given an x coordinate in view space, convert it to content space. Also 1923 * may be used for absolute heights (such as for the WebTextView's 1924 * textSize, which is unaffected by the height of the title bar). 1925 */ 1926 /*package*/ int viewToContentX(int x) { 1927 return viewToContentDimension(x); 1928 } 1929 1930 /** 1931 * Given a y coordinate in view space, convert it to content space. 1932 * Takes into account the height of the title bar if there is one 1933 * embedded into the WebView. 1934 */ 1935 /*package*/ int viewToContentY(int y) { 1936 return viewToContentDimension(y - getTitleHeight()); 1937 } 1938 1939 /** 1940 * Given a distance in content space, convert it to view space. Note: this 1941 * does not reflect translation, just scaling, so this should not be called 1942 * with coordinates, but should be called for dimensions like width or 1943 * height. 1944 */ 1945 /*package*/ int contentToViewDimension(int d) { 1946 return Math.round(d * mActualScale); 1947 } 1948 1949 /** 1950 * Given an x coordinate in content space, convert it to view 1951 * space. 1952 */ 1953 /*package*/ int contentToViewX(int x) { 1954 return contentToViewDimension(x); 1955 } 1956 1957 /** 1958 * Given a y coordinate in content space, convert it to view 1959 * space. Takes into account the height of the title bar. 1960 */ 1961 /*package*/ int contentToViewY(int y) { 1962 return contentToViewDimension(y) + getTitleHeight(); 1963 } 1964 1965 private Rect contentToViewRect(Rect x) { 1966 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 1967 contentToViewX(x.right), contentToViewY(x.bottom)); 1968 } 1969 1970 /* To invalidate a rectangle in content coordinates, we need to transform 1971 the rect into view coordinates, so we can then call invalidate(...). 1972 1973 Normally, we would just call contentToView[XY](...), which eventually 1974 calls Math.round(coordinate * mActualScale). However, for invalidates, 1975 we need to account for the slop that occurs with antialiasing. To 1976 address that, we are a little more liberal in the size of the rect that 1977 we invalidate. 1978 1979 This liberal calculation calls floor() for the top/left, and ceil() for 1980 the bottom/right coordinates. This catches the possible extra pixels of 1981 antialiasing that we might have missed with just round(). 1982 */ 1983 1984 // Called by JNI to invalidate the View, given rectangle coordinates in 1985 // content space 1986 private void viewInvalidate(int l, int t, int r, int b) { 1987 final float scale = mActualScale; 1988 final int dy = getTitleHeight(); 1989 invalidate((int)Math.floor(l * scale), 1990 (int)Math.floor(t * scale) + dy, 1991 (int)Math.ceil(r * scale), 1992 (int)Math.ceil(b * scale) + dy); 1993 } 1994 1995 // Called by JNI to invalidate the View after a delay, given rectangle 1996 // coordinates in content space 1997 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 1998 final float scale = mActualScale; 1999 final int dy = getTitleHeight(); 2000 postInvalidateDelayed(delay, 2001 (int)Math.floor(l * scale), 2002 (int)Math.floor(t * scale) + dy, 2003 (int)Math.ceil(r * scale), 2004 (int)Math.ceil(b * scale) + dy); 2005 } 2006 2007 private void invalidateContentRect(Rect r) { 2008 viewInvalidate(r.left, r.top, r.right, r.bottom); 2009 } 2010 2011 // stop the scroll animation, and don't let a subsequent fling add 2012 // to the existing velocity 2013 private void abortAnimation() { 2014 mScroller.abortAnimation(); 2015 mLastVelocity = 0; 2016 } 2017 2018 /* call from webcoreview.draw(), so we're still executing in the UI thread 2019 */ 2020 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2021 2022 // premature data from webkit, ignore 2023 if ((w | h) == 0) { 2024 return; 2025 } 2026 2027 // don't abort a scroll animation if we didn't change anything 2028 if (mContentWidth != w || mContentHeight != h) { 2029 // record new dimensions 2030 mContentWidth = w; 2031 mContentHeight = h; 2032 // If history Picture is drawn, don't update scroll. They will be 2033 // updated when we get out of that mode. 2034 if (!mDrawHistory) { 2035 // repin our scroll, taking into account the new content size 2036 int oldX = mScrollX; 2037 int oldY = mScrollY; 2038 mScrollX = pinLocX(mScrollX); 2039 mScrollY = pinLocY(mScrollY); 2040 if (oldX != mScrollX || oldY != mScrollY) { 2041 sendOurVisibleRect(); 2042 } 2043 if (!mScroller.isFinished()) { 2044 // We are in the middle of a scroll. Repin the final scroll 2045 // position. 2046 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2047 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2048 } 2049 } 2050 } 2051 contentSizeChanged(updateLayout); 2052 } 2053 2054 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 2055 boolean force) { 2056 if (scale < mMinZoomScale) { 2057 scale = mMinZoomScale; 2058 } else if (scale > mMaxZoomScale) { 2059 scale = mMaxZoomScale; 2060 } 2061 if (updateTextWrapScale) { 2062 mTextWrapScale = scale; 2063 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 2064 mLastHeightSent = 0; 2065 } 2066 if (scale != mActualScale || force) { 2067 if (mDrawHistory) { 2068 // If history Picture is drawn, don't update scroll. They will 2069 // be updated when we get out of that mode. 2070 if (scale != mActualScale && !mPreviewZoomOnly) { 2071 mCallbackProxy.onScaleChanged(mActualScale, scale); 2072 } 2073 mActualScale = scale; 2074 mInvActualScale = 1 / scale; 2075 sendViewSizeZoom(); 2076 } else { 2077 // update our scroll so we don't appear to jump 2078 // i.e. keep the center of the doc in the center of the view 2079 2080 int oldX = mScrollX; 2081 int oldY = mScrollY; 2082 float ratio = scale * mInvActualScale; // old inverse 2083 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2084 float sy = ratio * oldY + (ratio - 1) 2085 * (mZoomCenterY - getTitleHeight()); 2086 2087 // now update our new scale and inverse 2088 if (scale != mActualScale && !mPreviewZoomOnly) { 2089 mCallbackProxy.onScaleChanged(mActualScale, scale); 2090 } 2091 mActualScale = scale; 2092 mInvActualScale = 1 / scale; 2093 2094 // Scale all the child views 2095 mViewManager.scaleAll(); 2096 2097 // as we don't have animation for scaling, don't do animation 2098 // for scrolling, as it causes weird intermediate state 2099 // pinScrollTo(Math.round(sx), Math.round(sy)); 2100 mScrollX = pinLocX(Math.round(sx)); 2101 mScrollY = pinLocY(Math.round(sy)); 2102 2103 // update webkit 2104 sendViewSizeZoom(); 2105 sendOurVisibleRect(); 2106 } 2107 } 2108 } 2109 2110 // Used to avoid sending many visible rect messages. 2111 private Rect mLastVisibleRectSent; 2112 private Rect mLastGlobalRect; 2113 2114 private Rect sendOurVisibleRect() { 2115 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2116 2117 Rect rect = new Rect(); 2118 calcOurContentVisibleRect(rect); 2119 // Rect.equals() checks for null input. 2120 if (!rect.equals(mLastVisibleRectSent)) { 2121 Point pos = new Point(rect.left, rect.top); 2122 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2123 nativeMoveGeneration(), 0, pos); 2124 mLastVisibleRectSent = rect; 2125 } 2126 Rect globalRect = new Rect(); 2127 if (getGlobalVisibleRect(globalRect) 2128 && !globalRect.equals(mLastGlobalRect)) { 2129 if (DebugFlags.WEB_VIEW) { 2130 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2131 + globalRect.top + ",r=" + globalRect.right + ",b=" 2132 + globalRect.bottom); 2133 } 2134 // TODO: the global offset is only used by windowRect() 2135 // in ChromeClientAndroid ; other clients such as touch 2136 // and mouse events could return view + screen relative points. 2137 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2138 mLastGlobalRect = globalRect; 2139 } 2140 return rect; 2141 } 2142 2143 // Sets r to be the visible rectangle of our webview in view coordinates 2144 private void calcOurVisibleRect(Rect r) { 2145 Point p = new Point(); 2146 getGlobalVisibleRect(r, p); 2147 r.offset(-p.x, -p.y); 2148 if (mFindIsUp) { 2149 r.bottom -= mFindHeight; 2150 } 2151 } 2152 2153 // Sets r to be our visible rectangle in content coordinates 2154 private void calcOurContentVisibleRect(Rect r) { 2155 calcOurVisibleRect(r); 2156 r.left = viewToContentX(r.left); 2157 // viewToContentY will remove the total height of the title bar. Add 2158 // the visible height back in to account for the fact that if the title 2159 // bar is partially visible, the part of the visible rect which is 2160 // displaying our content is displaced by that amount. 2161 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2162 r.right = viewToContentX(r.right); 2163 r.bottom = viewToContentY(r.bottom); 2164 } 2165 2166 static class ViewSizeData { 2167 int mWidth; 2168 int mHeight; 2169 int mTextWrapWidth; 2170 int mAnchorX; 2171 int mAnchorY; 2172 float mScale; 2173 boolean mIgnoreHeight; 2174 } 2175 2176 /** 2177 * Compute unzoomed width and height, and if they differ from the last 2178 * values we sent, send them to webkit (to be used has new viewport) 2179 * 2180 * @return true if new values were sent 2181 */ 2182 private boolean sendViewSizeZoom() { 2183 if (mPreviewZoomOnly) return false; 2184 2185 int viewWidth = getViewWidth(); 2186 int newWidth = Math.round(viewWidth * mInvActualScale); 2187 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2188 /* 2189 * Because the native side may have already done a layout before the 2190 * View system was able to measure us, we have to send a height of 0 to 2191 * remove excess whitespace when we grow our width. This will trigger a 2192 * layout and a change in content size. This content size change will 2193 * mean that contentSizeChanged will either call this method directly or 2194 * indirectly from onSizeChanged. 2195 */ 2196 if (newWidth > mLastWidthSent && mWrapContent) { 2197 newHeight = 0; 2198 } 2199 // Avoid sending another message if the dimensions have not changed. 2200 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2201 ViewSizeData data = new ViewSizeData(); 2202 data.mWidth = newWidth; 2203 data.mHeight = newHeight; 2204 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2205 data.mScale = mActualScale; 2206 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2207 data.mAnchorX = mAnchorX; 2208 data.mAnchorY = mAnchorY; 2209 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2210 mLastWidthSent = newWidth; 2211 mLastHeightSent = newHeight; 2212 mAnchorX = mAnchorY = 0; 2213 return true; 2214 } 2215 return false; 2216 } 2217 2218 @Override 2219 protected int computeHorizontalScrollRange() { 2220 if (mDrawHistory) { 2221 return mHistoryWidth; 2222 } else { 2223 // to avoid rounding error caused unnecessary scrollbar, use floor 2224 return (int) Math.floor(mContentWidth * mActualScale); 2225 } 2226 } 2227 2228 @Override 2229 protected int computeVerticalScrollRange() { 2230 if (mDrawHistory) { 2231 return mHistoryHeight; 2232 } else { 2233 // to avoid rounding error caused unnecessary scrollbar, use floor 2234 return (int) Math.floor(mContentHeight * mActualScale); 2235 } 2236 } 2237 2238 @Override 2239 protected int computeVerticalScrollOffset() { 2240 return Math.max(mScrollY - getTitleHeight(), 0); 2241 } 2242 2243 @Override 2244 protected int computeVerticalScrollExtent() { 2245 return getViewHeight(); 2246 } 2247 2248 /** @hide */ 2249 @Override 2250 protected void onDrawVerticalScrollBar(Canvas canvas, 2251 Drawable scrollBar, 2252 int l, int t, int r, int b) { 2253 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2254 scrollBar.draw(canvas); 2255 } 2256 2257 /** 2258 * Get the url for the current page. This is not always the same as the url 2259 * passed to WebViewClient.onPageStarted because although the load for 2260 * that url has begun, the current page may not have changed. 2261 * @return The url for the current page. 2262 */ 2263 public String getUrl() { 2264 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2265 return h != null ? h.getUrl() : null; 2266 } 2267 2268 /** 2269 * Get the original url for the current page. This is not always the same 2270 * as the url passed to WebViewClient.onPageStarted because although the 2271 * load for that url has begun, the current page may not have changed. 2272 * Also, there may have been redirects resulting in a different url to that 2273 * originally requested. 2274 * @return The url that was originally requested for the current page. 2275 */ 2276 public String getOriginalUrl() { 2277 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2278 return h != null ? h.getOriginalUrl() : null; 2279 } 2280 2281 /** 2282 * Get the title for the current page. This is the title of the current page 2283 * until WebViewClient.onReceivedTitle is called. 2284 * @return The title for the current page. 2285 */ 2286 public String getTitle() { 2287 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2288 return h != null ? h.getTitle() : null; 2289 } 2290 2291 /** 2292 * Get the favicon for the current page. This is the favicon of the current 2293 * page until WebViewClient.onReceivedIcon is called. 2294 * @return The favicon for the current page. 2295 */ 2296 public Bitmap getFavicon() { 2297 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2298 return h != null ? h.getFavicon() : null; 2299 } 2300 2301 /** 2302 * Get the touch icon url for the apple-touch-icon <link> element. 2303 * @hide 2304 */ 2305 public String getTouchIconUrl() { 2306 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2307 return h != null ? h.getTouchIconUrl() : null; 2308 } 2309 2310 /** 2311 * Get the progress for the current page. 2312 * @return The progress for the current page between 0 and 100. 2313 */ 2314 public int getProgress() { 2315 return mCallbackProxy.getProgress(); 2316 } 2317 2318 /** 2319 * @return the height of the HTML content. 2320 */ 2321 public int getContentHeight() { 2322 return mContentHeight; 2323 } 2324 2325 /** 2326 * @return the width of the HTML content. 2327 * @hide 2328 */ 2329 public int getContentWidth() { 2330 return mContentWidth; 2331 } 2332 2333 /** 2334 * Pause all layout, parsing, and javascript timers for all webviews. This 2335 * is a global requests, not restricted to just this webview. This can be 2336 * useful if the application has been paused. 2337 */ 2338 public void pauseTimers() { 2339 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2340 } 2341 2342 /** 2343 * Resume all layout, parsing, and javascript timers for all webviews. 2344 * This will resume dispatching all timers. 2345 */ 2346 public void resumeTimers() { 2347 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2348 } 2349 2350 /** 2351 * Call this to pause any extra processing associated with this view and 2352 * its associated DOM/plugins/javascript/etc. For example, if the view is 2353 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2354 * network traffic. When the view is again "active", call onResume(). 2355 * 2356 * Note that this differs from pauseTimers(), which affects all views/DOMs 2357 * @hide 2358 */ 2359 public void onPause() { 2360 if (!mIsPaused) { 2361 mIsPaused = true; 2362 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2363 } 2364 } 2365 2366 /** 2367 * Call this to balanace a previous call to onPause() 2368 * @hide 2369 */ 2370 public void onResume() { 2371 if (mIsPaused) { 2372 mIsPaused = false; 2373 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2374 } 2375 } 2376 2377 /** 2378 * Returns true if the view is paused, meaning onPause() was called. Calling 2379 * onResume() sets the paused state back to false. 2380 * @hide 2381 */ 2382 public boolean isPaused() { 2383 return mIsPaused; 2384 } 2385 2386 /** 2387 * Call this to inform the view that memory is low so that it can 2388 * free any available memory. 2389 */ 2390 public void freeMemory() { 2391 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2392 } 2393 2394 /** 2395 * Clear the resource cache. Note that the cache is per-application, so 2396 * this will clear the cache for all WebViews used. 2397 * 2398 * @param includeDiskFiles If false, only the RAM cache is cleared. 2399 */ 2400 public void clearCache(boolean includeDiskFiles) { 2401 // Note: this really needs to be a static method as it clears cache for all 2402 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2403 // we can't make this static. 2404 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2405 includeDiskFiles ? 1 : 0, 0); 2406 } 2407 2408 /** 2409 * Make sure that clearing the form data removes the adapter from the 2410 * currently focused textfield if there is one. 2411 */ 2412 public void clearFormData() { 2413 if (inEditingMode()) { 2414 AutoCompleteAdapter adapter = null; 2415 mWebTextView.setAdapterCustom(adapter); 2416 } 2417 } 2418 2419 /** 2420 * Tell the WebView to clear its internal back/forward list. 2421 */ 2422 public void clearHistory() { 2423 mCallbackProxy.getBackForwardList().setClearPending(); 2424 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2425 } 2426 2427 /** 2428 * Clear the SSL preferences table stored in response to proceeding with SSL 2429 * certificate errors. 2430 */ 2431 public void clearSslPreferences() { 2432 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2433 } 2434 2435 /** 2436 * Return the WebBackForwardList for this WebView. This contains the 2437 * back/forward list for use in querying each item in the history stack. 2438 * This is a copy of the private WebBackForwardList so it contains only a 2439 * snapshot of the current state. Multiple calls to this method may return 2440 * different objects. The object returned from this method will not be 2441 * updated to reflect any new state. 2442 */ 2443 public WebBackForwardList copyBackForwardList() { 2444 return mCallbackProxy.getBackForwardList().clone(); 2445 } 2446 2447 /* 2448 * Highlight and scroll to the next occurance of String in findAll. 2449 * Wraps the page infinitely, and scrolls. Must be called after 2450 * calling findAll. 2451 * 2452 * @param forward Direction to search. 2453 */ 2454 public void findNext(boolean forward) { 2455 if (0 == mNativeClass) return; // client isn't initialized 2456 nativeFindNext(forward); 2457 } 2458 2459 /* 2460 * Find all instances of find on the page and highlight them. 2461 * @param find String to find. 2462 * @return int The number of occurances of the String "find" 2463 * that were found. 2464 */ 2465 public int findAll(String find) { 2466 if (0 == mNativeClass) return 0; // client isn't initialized 2467 if (mFindIsUp == false) { 2468 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2469 false); 2470 mFindIsUp = true; 2471 } 2472 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2473 invalidate(); 2474 mLastFind = find; 2475 return result; 2476 } 2477 2478 // Used to know whether the find dialog is open. Affects whether 2479 // or not we draw the highlights for matches. 2480 private boolean mFindIsUp; 2481 private int mFindHeight; 2482 // Keep track of the last string sent, so we can search again after an 2483 // orientation change or the dismissal of the soft keyboard. 2484 private String mLastFind; 2485 2486 /** 2487 * Return the first substring consisting of the address of a physical 2488 * location. Currently, only addresses in the United States are detected, 2489 * and consist of: 2490 * - a house number 2491 * - a street name 2492 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2493 * - a city name 2494 * - a state or territory, either spelled out or two-letter abbr. 2495 * - an optional 5 digit or 9 digit zip code. 2496 * 2497 * All names must be correctly capitalized, and the zip code, if present, 2498 * must be valid for the state. The street type must be a standard USPS 2499 * spelling or abbreviation. The state or territory must also be spelled 2500 * or abbreviated using USPS standards. The house number may not exceed 2501 * five digits. 2502 * @param addr The string to search for addresses. 2503 * 2504 * @return the address, or if no address is found, return null. 2505 */ 2506 public static String findAddress(String addr) { 2507 return findAddress(addr, false); 2508 } 2509 2510 /** 2511 * @hide 2512 * Return the first substring consisting of the address of a physical 2513 * location. Currently, only addresses in the United States are detected, 2514 * and consist of: 2515 * - a house number 2516 * - a street name 2517 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2518 * - a city name 2519 * - a state or territory, either spelled out or two-letter abbr. 2520 * - an optional 5 digit or 9 digit zip code. 2521 * 2522 * Names are optionally capitalized, and the zip code, if present, 2523 * must be valid for the state. The street type must be a standard USPS 2524 * spelling or abbreviation. The state or territory must also be spelled 2525 * or abbreviated using USPS standards. The house number may not exceed 2526 * five digits. 2527 * @param addr The string to search for addresses. 2528 * @param caseInsensitive addr Set to true to make search ignore case. 2529 * 2530 * @return the address, or if no address is found, return null. 2531 */ 2532 public static String findAddress(String addr, boolean caseInsensitive) { 2533 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2534 } 2535 2536 /* 2537 * Clear the highlighting surrounding text matches created by findAll. 2538 */ 2539 public void clearMatches() { 2540 if (mNativeClass == 0) 2541 return; 2542 if (mFindIsUp) { 2543 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2544 false); 2545 mFindIsUp = false; 2546 } 2547 nativeSetFindIsUp(); 2548 // Now that the dialog has been removed, ensure that we scroll to a 2549 // location that is not beyond the end of the page. 2550 pinScrollTo(mScrollX, mScrollY, false, 0); 2551 invalidate(); 2552 } 2553 2554 /** 2555 * @hide 2556 */ 2557 public void setFindDialogHeight(int height) { 2558 if (DebugFlags.WEB_VIEW) { 2559 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2560 } 2561 mFindHeight = height; 2562 } 2563 2564 /** 2565 * Query the document to see if it contains any image references. The 2566 * message object will be dispatched with arg1 being set to 1 if images 2567 * were found and 0 if the document does not reference any images. 2568 * @param response The message that will be dispatched with the result. 2569 */ 2570 public void documentHasImages(Message response) { 2571 if (response == null) { 2572 return; 2573 } 2574 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2575 } 2576 2577 @Override 2578 public void computeScroll() { 2579 if (mScroller.computeScrollOffset()) { 2580 int oldX = mScrollX; 2581 int oldY = mScrollY; 2582 mScrollX = mScroller.getCurrX(); 2583 mScrollY = mScroller.getCurrY(); 2584 postInvalidate(); // So we draw again 2585 if (oldX != mScrollX || oldY != mScrollY) { 2586 // as onScrollChanged() is not called, sendOurVisibleRect() 2587 // needs to be call explicitly 2588 sendOurVisibleRect(); 2589 } 2590 } else { 2591 super.computeScroll(); 2592 } 2593 } 2594 2595 private static int computeDuration(int dx, int dy) { 2596 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2597 int duration = distance * 1000 / STD_SPEED; 2598 return Math.min(duration, MAX_DURATION); 2599 } 2600 2601 // helper to pin the scrollBy parameters (already in view coordinates) 2602 // returns true if the scroll was changed 2603 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2604 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2605 } 2606 // helper to pin the scrollTo parameters (already in view coordinates) 2607 // returns true if the scroll was changed 2608 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2609 x = pinLocX(x); 2610 y = pinLocY(y); 2611 int dx = x - mScrollX; 2612 int dy = y - mScrollY; 2613 2614 if ((dx | dy) == 0) { 2615 return false; 2616 } 2617 if (animate) { 2618 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2619 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2620 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2621 awakenScrollBars(mScroller.getDuration()); 2622 invalidate(); 2623 } else { 2624 abortAnimation(); // just in case 2625 scrollTo(x, y); 2626 } 2627 return true; 2628 } 2629 2630 // Scale from content to view coordinates, and pin. 2631 // Also called by jni webview.cpp 2632 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2633 if (mDrawHistory) { 2634 // disallow WebView to change the scroll position as History Picture 2635 // is used in the view system. 2636 // TODO: as we switchOutDrawHistory when trackball or navigation 2637 // keys are hit, this should be safe. Right? 2638 return false; 2639 } 2640 cx = contentToViewDimension(cx); 2641 cy = contentToViewDimension(cy); 2642 if (mHeightCanMeasure) { 2643 // move our visible rect according to scroll request 2644 if (cy != 0) { 2645 Rect tempRect = new Rect(); 2646 calcOurVisibleRect(tempRect); 2647 tempRect.offset(cx, cy); 2648 requestRectangleOnScreen(tempRect); 2649 } 2650 // FIXME: We scroll horizontally no matter what because currently 2651 // ScrollView and ListView will not scroll horizontally. 2652 // FIXME: Why do we only scroll horizontally if there is no 2653 // vertical scroll? 2654// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2655 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2656 } else { 2657 return pinScrollBy(cx, cy, animate, 0); 2658 } 2659 } 2660 2661 /** 2662 * Called by CallbackProxy when the page finishes loading. 2663 * @param url The URL of the page which has finished loading. 2664 */ 2665 /* package */ void onPageFinished(String url) { 2666 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 2667 // If the user is now on a different page, or has scrolled the page 2668 // past the point where the title bar is offscreen, ignore the 2669 // scroll request. 2670 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 2671 && mScrollX == 0 && mScrollY == 0) { 2672 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 2673 SLIDE_TITLE_DURATION); 2674 } 2675 mPageThatNeedsToSlideTitleBarOffScreen = null; 2676 } 2677 } 2678 2679 /** 2680 * The URL of a page that sent a message to scroll the title bar off screen. 2681 * 2682 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 2683 * title bar off the screen. Sometimes, the scroll position is set before 2684 * the page finishes loading. Rather than scrolling while the page is still 2685 * loading, keep track of the URL and new scroll position so we can perform 2686 * the scroll once the page finishes loading. 2687 */ 2688 private String mPageThatNeedsToSlideTitleBarOffScreen; 2689 2690 /** 2691 * The destination Y scroll position to be used when the page finishes 2692 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 2693 */ 2694 private int mYDistanceToSlideTitleOffScreen; 2695 2696 // scale from content to view coordinates, and pin 2697 // return true if pin caused the final x/y different than the request cx/cy, 2698 // and a future scroll may reach the request cx/cy after our size has 2699 // changed 2700 // return false if the view scroll to the exact position as it is requested, 2701 // where negative numbers are taken to mean 0 2702 private boolean setContentScrollTo(int cx, int cy) { 2703 if (mDrawHistory) { 2704 // disallow WebView to change the scroll position as History Picture 2705 // is used in the view system. 2706 // One known case where this is called is that WebCore tries to 2707 // restore the scroll position. As history Picture already uses the 2708 // saved scroll position, it is ok to skip this. 2709 return false; 2710 } 2711 int vx; 2712 int vy; 2713 if ((cx | cy) == 0) { 2714 // If the page is being scrolled to (0,0), do not add in the title 2715 // bar's height, and simply scroll to (0,0). (The only other work 2716 // in contentToView_ is to multiply, so this would not change 0.) 2717 vx = 0; 2718 vy = 0; 2719 } else { 2720 vx = contentToViewX(cx); 2721 vy = contentToViewY(cy); 2722 } 2723// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2724// vx + " " + vy + "]"); 2725 // Some mobile sites attempt to scroll the title bar off the page by 2726 // scrolling to (0,1). If we are at the top left corner of the 2727 // page, assume this is an attempt to scroll off the title bar, and 2728 // animate the title bar off screen slowly enough that the user can see 2729 // it. 2730 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 2731 && mTitleBar != null) { 2732 // FIXME: 100 should be defined somewhere as our max progress. 2733 if (getProgress() < 100) { 2734 // Wait to scroll the title bar off screen until the page has 2735 // finished loading. Keep track of the URL and the destination 2736 // Y position 2737 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 2738 mYDistanceToSlideTitleOffScreen = vy; 2739 } else { 2740 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2741 } 2742 // Since we are animating, we have not yet reached the desired 2743 // scroll position. Do not return true to request another attempt 2744 return false; 2745 } 2746 pinScrollTo(vx, vy, false, 0); 2747 // If the request was to scroll to a negative coordinate, treat it as if 2748 // it was a request to scroll to 0 2749 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2750 return true; 2751 } else { 2752 return false; 2753 } 2754 } 2755 2756 // scale from content to view coordinates, and pin 2757 private void spawnContentScrollTo(int cx, int cy) { 2758 if (mDrawHistory) { 2759 // disallow WebView to change the scroll position as History Picture 2760 // is used in the view system. 2761 return; 2762 } 2763 int vx = contentToViewX(cx); 2764 int vy = contentToViewY(cy); 2765 pinScrollTo(vx, vy, true, 0); 2766 } 2767 2768 /** 2769 * These are from webkit, and are in content coordinate system (unzoomed) 2770 */ 2771 private void contentSizeChanged(boolean updateLayout) { 2772 // suppress 0,0 since we usually see real dimensions soon after 2773 // this avoids drawing the prev content in a funny place. If we find a 2774 // way to consolidate these notifications, this check may become 2775 // obsolete 2776 if ((mContentWidth | mContentHeight) == 0) { 2777 return; 2778 } 2779 2780 if (mHeightCanMeasure) { 2781 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2782 || updateLayout) { 2783 requestLayout(); 2784 } 2785 } else if (mWidthCanMeasure) { 2786 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2787 || updateLayout) { 2788 requestLayout(); 2789 } 2790 } else { 2791 // If we don't request a layout, try to send our view size to the 2792 // native side to ensure that WebCore has the correct dimensions. 2793 sendViewSizeZoom(); 2794 } 2795 } 2796 2797 /** 2798 * Set the WebViewClient that will receive various notifications and 2799 * requests. This will replace the current handler. 2800 * @param client An implementation of WebViewClient. 2801 */ 2802 public void setWebViewClient(WebViewClient client) { 2803 mCallbackProxy.setWebViewClient(client); 2804 } 2805 2806 /** 2807 * Gets the WebViewClient 2808 * @return the current WebViewClient instance. 2809 * 2810 *@hide pending API council approval. 2811 */ 2812 public WebViewClient getWebViewClient() { 2813 return mCallbackProxy.getWebViewClient(); 2814 } 2815 2816 /** 2817 * Register the interface to be used when content can not be handled by 2818 * the rendering engine, and should be downloaded instead. This will replace 2819 * the current handler. 2820 * @param listener An implementation of DownloadListener. 2821 */ 2822 public void setDownloadListener(DownloadListener listener) { 2823 mCallbackProxy.setDownloadListener(listener); 2824 } 2825 2826 /** 2827 * Set the chrome handler. This is an implementation of WebChromeClient for 2828 * use in handling Javascript dialogs, favicons, titles, and the progress. 2829 * This will replace the current handler. 2830 * @param client An implementation of WebChromeClient. 2831 */ 2832 public void setWebChromeClient(WebChromeClient client) { 2833 mCallbackProxy.setWebChromeClient(client); 2834 } 2835 2836 /** 2837 * Gets the chrome handler. 2838 * @return the current WebChromeClient instance. 2839 * 2840 * @hide API council approval. 2841 */ 2842 public WebChromeClient getWebChromeClient() { 2843 return mCallbackProxy.getWebChromeClient(); 2844 } 2845 2846 /** 2847 * Set the Picture listener. This is an interface used to receive 2848 * notifications of a new Picture. 2849 * @param listener An implementation of WebView.PictureListener. 2850 */ 2851 public void setPictureListener(PictureListener listener) { 2852 mPictureListener = listener; 2853 } 2854 2855 /** 2856 * {@hide} 2857 */ 2858 /* FIXME: Debug only! Remove for SDK! */ 2859 public void externalRepresentation(Message callback) { 2860 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2861 } 2862 2863 /** 2864 * {@hide} 2865 */ 2866 /* FIXME: Debug only! Remove for SDK! */ 2867 public void documentAsText(Message callback) { 2868 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2869 } 2870 2871 /** 2872 * Use this function to bind an object to Javascript so that the 2873 * methods can be accessed from Javascript. 2874 * <p><strong>IMPORTANT:</strong> 2875 * <ul> 2876 * <li> Using addJavascriptInterface() allows JavaScript to control your 2877 * application. This can be a very useful feature or a dangerous security 2878 * issue. When the HTML in the WebView is untrustworthy (for example, part 2879 * or all of the HTML is provided by some person or process), then an 2880 * attacker could inject HTML that will execute your code and possibly any 2881 * code of the attacker's choosing.<br> 2882 * Do not use addJavascriptInterface() unless all of the HTML in this 2883 * WebView was written by you.</li> 2884 * <li> The Java object that is bound runs in another thread and not in 2885 * the thread that it was constructed in.</li> 2886 * </ul></p> 2887 * @param obj The class instance to bind to Javascript 2888 * @param interfaceName The name to used to expose the class in Javascript 2889 */ 2890 public void addJavascriptInterface(Object obj, String interfaceName) { 2891 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2892 arg.mObject = obj; 2893 arg.mInterfaceName = interfaceName; 2894 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2895 } 2896 2897 /** 2898 * Return the WebSettings object used to control the settings for this 2899 * WebView. 2900 * @return A WebSettings object that can be used to control this WebView's 2901 * settings. 2902 */ 2903 public WebSettings getSettings() { 2904 return mWebViewCore.getSettings(); 2905 } 2906 2907 /** 2908 * Return the list of currently loaded plugins. 2909 * @return The list of currently loaded plugins. 2910 * 2911 * @deprecated This was used for Gears, which has been deprecated. 2912 */ 2913 @Deprecated 2914 public static synchronized PluginList getPluginList() { 2915 return new PluginList(); 2916 } 2917 2918 /** 2919 * @deprecated This was used for Gears, which has been deprecated. 2920 */ 2921 @Deprecated 2922 public void refreshPlugins(boolean reloadOpenPages) { } 2923 2924 //------------------------------------------------------------------------- 2925 // Override View methods 2926 //------------------------------------------------------------------------- 2927 2928 @Override 2929 protected void finalize() throws Throwable { 2930 try { 2931 destroy(); 2932 } finally { 2933 super.finalize(); 2934 } 2935 } 2936 2937 @Override 2938 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 2939 if (child == mTitleBar) { 2940 // When drawing the title bar, move it horizontally to always show 2941 // at the top of the WebView. 2942 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 2943 } 2944 return super.drawChild(canvas, child, drawingTime); 2945 } 2946 2947 private void drawContent(Canvas canvas) { 2948 // Update the buttons in the picture, so when we draw the picture 2949 // to the screen, they are in the correct state. 2950 // Tell the native side if user is a) touching the screen, 2951 // b) pressing the trackball down, or c) pressing the enter key 2952 // If the cursor is on a button, we need to draw it in the pressed 2953 // state. 2954 // If mNativeClass is 0, we should not reach here, so we do not 2955 // need to check it again. 2956 nativeRecordButtons(hasFocus() && hasWindowFocus(), 2957 mTouchMode == TOUCH_SHORTPRESS_START_MODE 2958 || mTrackballDown || mGotCenterDown, false); 2959 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 2960 } 2961 2962 @Override 2963 protected void onDraw(Canvas canvas) { 2964 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 2965 if (mNativeClass == 0) { 2966 return; 2967 } 2968 2969 int saveCount = canvas.save(); 2970 if (mTitleBar != null) { 2971 canvas.translate(0, (int) mTitleBar.getHeight()); 2972 } 2973 if (mDragTrackerHandler == null) { 2974 drawContent(canvas); 2975 } else { 2976 if (!mDragTrackerHandler.draw(canvas)) { 2977 // sometimes the tracker doesn't draw, even though its active 2978 drawContent(canvas); 2979 } 2980 if (mDragTrackerHandler.isFinished()) { 2981 mDragTrackerHandler = null; 2982 } 2983 } 2984 canvas.restoreToCount(saveCount); 2985 2986 // Now draw the shadow. 2987 if (mTitleBar != null) { 2988 int y = mScrollY + getVisibleTitleHeight(); 2989 int height = (int) (5f * getContext().getResources() 2990 .getDisplayMetrics().density); 2991 mTitleShadow.setBounds(mScrollX, y, mScrollX + getWidth(), 2992 y + height); 2993 mTitleShadow.draw(canvas); 2994 } 2995 if (AUTO_REDRAW_HACK && mAutoRedraw) { 2996 invalidate(); 2997 } 2998 mWebViewCore.signalRepaintDone(); 2999 } 3000 3001 @Override 3002 public void setLayoutParams(ViewGroup.LayoutParams params) { 3003 if (params.height == LayoutParams.WRAP_CONTENT) { 3004 mWrapContent = true; 3005 } 3006 super.setLayoutParams(params); 3007 } 3008 3009 @Override 3010 public boolean performLongClick() { 3011 // performLongClick() is the result of a delayed message. If we switch 3012 // to windows overview, the WebView will be temporarily removed from the 3013 // view system. In that case, do nothing. 3014 if (getParent() == null) return false; 3015 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3016 // Send the click so that the textfield is in focus 3017 centerKeyPressOnTextField(); 3018 rebuildWebTextView(); 3019 } 3020 if (inEditingMode()) { 3021 return mWebTextView.performLongClick(); 3022 } else { 3023 return super.performLongClick(); 3024 } 3025 } 3026 3027 boolean inAnimateZoom() { 3028 return mZoomScale != 0; 3029 } 3030 3031 /** 3032 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3033 * has changed. This is especially important for password fields, which are 3034 * drawn by the WebTextView, since it conveys more information than what 3035 * webkit draws. Thus we need to reposition it to show in the correct 3036 * place. 3037 */ 3038 private boolean mNeedToAdjustWebTextView; 3039 3040 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3041 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3042 Rect vBox = contentToViewRect(contentBounds); 3043 Rect visibleRect = new Rect(); 3044 calcOurVisibleRect(visibleRect); 3045 // The IME may have shown, resulting in the textfield being offscreen. 3046 // If so, the textfield will be scrolled on screen, so treat it as 3047 // though it is on screen. If it is on screen, place the WebTextView in 3048 // its new place, accounting for our new scroll/zoom values. 3049 InputMethodManager imm = InputMethodManager.peekInstance(); 3050 if ((imm != null && imm.isActive(mWebTextView)) 3051 || (allowIntersect ? Rect.intersects(visibleRect, vBox) 3052 : visibleRect.contains(vBox))) { 3053 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3054 vBox.height()); 3055 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3056 contentToViewDimension( 3057 nativeFocusCandidateTextSize())); 3058 return true; 3059 } else { 3060 // The textfield is now off screen. The user probably 3061 // was not zooming to see the textfield better. Remove 3062 // the WebTextView. If the user types a key, and the 3063 // textfield is still in focus, we will reconstruct 3064 // the WebTextView and scroll it back on screen. 3065 mWebTextView.remove(); 3066 return false; 3067 } 3068 } 3069 3070 private void drawLayers(Canvas canvas) { 3071 if (mRootLayer != 0) { 3072 int scrollY = computeVerticalScrollOffset(); 3073 int viewHeight = getHeight() - getVisibleTitleHeight(); 3074 3075 nativeDrawLayers(mRootLayer, mScrollX, scrollY, 3076 getWidth(), viewHeight, 3077 mActualScale, canvas); 3078 } 3079 } 3080 3081 private void drawCoreAndCursorRing(Canvas canvas, int color, 3082 boolean drawCursorRing) { 3083 if (mDrawHistory) { 3084 canvas.scale(mActualScale, mActualScale); 3085 canvas.drawPicture(mHistoryPicture); 3086 drawLayers(canvas); 3087 return; 3088 } 3089 3090 boolean animateZoom = mZoomScale != 0; 3091 boolean animateScroll = (!mScroller.isFinished() 3092 || mVelocityTracker != null) 3093 && (mTouchMode != TOUCH_DRAG_MODE || 3094 mHeldMotionless != MOTIONLESS_TRUE); 3095 if (mTouchMode == TOUCH_DRAG_MODE) { 3096 if (mHeldMotionless == MOTIONLESS_PENDING) { 3097 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3098 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3099 mHeldMotionless = MOTIONLESS_FALSE; 3100 } 3101 if (mHeldMotionless == MOTIONLESS_FALSE) { 3102 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3103 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3104 mHeldMotionless = MOTIONLESS_PENDING; 3105 } 3106 } 3107 if (animateZoom) { 3108 float zoomScale; 3109 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 3110 if (interval < ZOOM_ANIMATION_LENGTH) { 3111 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 3112 zoomScale = 1.0f / (mInvInitialZoomScale 3113 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 3114 invalidate(); 3115 } else { 3116 zoomScale = mZoomScale; 3117 // set mZoomScale to be 0 as we have done animation 3118 mZoomScale = 0; 3119 WebViewCore.resumeUpdatePicture(mWebViewCore); 3120 // call invalidate() again to draw with the final filters 3121 invalidate(); 3122 if (mNeedToAdjustWebTextView) { 3123 mNeedToAdjustWebTextView = false; 3124 if (didUpdateTextViewBounds(false) 3125 && nativeFocusCandidateIsPassword()) { 3126 // If it is a password field, start drawing the 3127 // WebTextView once again. 3128 mWebTextView.setInPassword(true); 3129 } 3130 } 3131 } 3132 // calculate the intermediate scroll position. As we need to use 3133 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 3134 float scale = zoomScale * mInvInitialZoomScale; 3135 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 3136 - mZoomCenterX); 3137 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 3138 * zoomScale)) + mScrollX; 3139 int titleHeight = getTitleHeight(); 3140 int ty = Math.round(scale 3141 * (mInitialScrollY + mZoomCenterY - titleHeight) 3142 - (mZoomCenterY - titleHeight)); 3143 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 3144 - titleHeight, getViewHeight(), Math.round(mContentHeight 3145 * zoomScale)) + titleHeight) + mScrollY; 3146 canvas.translate(tx, ty); 3147 canvas.scale(zoomScale, zoomScale); 3148 if (inEditingMode() && !mNeedToAdjustWebTextView 3149 && mZoomScale != 0) { 3150 // The WebTextView is up. Keep track of this so we can adjust 3151 // its size and placement when we finish zooming 3152 mNeedToAdjustWebTextView = true; 3153 // If it is in password mode, turn it off so it does not draw 3154 // misplaced. 3155 if (nativeFocusCandidateIsPassword()) { 3156 mWebTextView.setInPassword(false); 3157 } 3158 } 3159 } else { 3160 canvas.scale(mActualScale, mActualScale); 3161 } 3162 3163 mWebViewCore.drawContentPicture(canvas, color, 3164 (animateZoom || mPreviewZoomOnly), animateScroll); 3165 3166 drawLayers(canvas); 3167 3168 if (mNativeClass == 0) return; 3169 if (mShiftIsPressed && !(animateZoom || mPreviewZoomOnly)) { 3170 if (mTouchSelection || mExtendSelection) { 3171 nativeDrawSelectionRegion(canvas); 3172 } 3173 if (!mTouchSelection) { 3174 nativeDrawSelectionPointer(canvas, mInvActualScale, mSelectX, 3175 mSelectY - getTitleHeight(), mExtendSelection); 3176 } 3177 } else if (drawCursorRing) { 3178 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3179 mTouchMode = TOUCH_SHORTPRESS_MODE; 3180 HitTestResult hitTest = getHitTestResult(); 3181 if (mPreventLongPress || (hitTest != null && 3182 hitTest.mType != HitTestResult.UNKNOWN_TYPE)) { 3183 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3184 .obtainMessage(SWITCH_TO_LONGPRESS), 3185 LONG_PRESS_TIMEOUT); 3186 } 3187 } 3188 nativeDrawCursorRing(canvas); 3189 } 3190 // When the FindDialog is up, only draw the matches if we are not in 3191 // the process of scrolling them into view. 3192 if (mFindIsUp && !animateScroll) { 3193 nativeDrawMatches(canvas); 3194 } 3195 if (mFocusSizeChanged) { 3196 mFocusSizeChanged = false; 3197 // If we are zooming, this will get handled above, when the zoom 3198 // finishes. We also do not need to do this unless the WebTextView 3199 // is showing. 3200 if (!animateZoom && inEditingMode()) { 3201 didUpdateTextViewBounds(true); 3202 } 3203 } 3204 } 3205 3206 // draw history 3207 private boolean mDrawHistory = false; 3208 private Picture mHistoryPicture = null; 3209 private int mHistoryWidth = 0; 3210 private int mHistoryHeight = 0; 3211 3212 // Only check the flag, can be called from WebCore thread 3213 boolean drawHistory() { 3214 return mDrawHistory; 3215 } 3216 3217 // Should only be called in UI thread 3218 void switchOutDrawHistory() { 3219 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3220 if (mDrawHistory && mWebViewCore.pictureReady()) { 3221 mDrawHistory = false; 3222 invalidate(); 3223 int oldScrollX = mScrollX; 3224 int oldScrollY = mScrollY; 3225 mScrollX = pinLocX(mScrollX); 3226 mScrollY = pinLocY(mScrollY); 3227 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3228 mUserScroll = false; 3229 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3230 oldScrollY); 3231 } 3232 sendOurVisibleRect(); 3233 } 3234 } 3235 3236 WebViewCore.CursorData cursorData() { 3237 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3238 result.mMoveGeneration = nativeMoveGeneration(); 3239 result.mFrame = nativeCursorFramePointer(); 3240 Point position = nativeCursorPosition(); 3241 result.mX = position.x; 3242 result.mY = position.y; 3243 return result; 3244 } 3245 3246 /** 3247 * Delete text from start to end in the focused textfield. If there is no 3248 * focus, or if start == end, silently fail. If start and end are out of 3249 * order, swap them. 3250 * @param start Beginning of selection to delete. 3251 * @param end End of selection to delete. 3252 */ 3253 /* package */ void deleteSelection(int start, int end) { 3254 mTextGeneration++; 3255 WebViewCore.TextSelectionData data 3256 = new WebViewCore.TextSelectionData(start, end); 3257 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3258 data); 3259 } 3260 3261 /** 3262 * Set the selection to (start, end) in the focused textfield. If start and 3263 * end are out of order, swap them. 3264 * @param start Beginning of selection. 3265 * @param end End of selection. 3266 */ 3267 /* package */ void setSelection(int start, int end) { 3268 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3269 } 3270 3271 @Override 3272 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3273 InputConnection connection = super.onCreateInputConnection(outAttrs); 3274 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3275 return connection; 3276 } 3277 3278 /** 3279 * Called in response to a message from webkit telling us that the soft 3280 * keyboard should be launched. 3281 */ 3282 private void displaySoftKeyboard(boolean isTextView) { 3283 InputMethodManager imm = (InputMethodManager) 3284 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3285 3286 if (isTextView) { 3287 rebuildWebTextView(); 3288 if (!inEditingMode()) return; 3289 imm.showSoftInput(mWebTextView, 0); 3290 // bring it back to the default scale so that user can enter text 3291 if (mActualScale < mDefaultScale) { 3292 mInZoomOverview = false; 3293 mZoomCenterX = mLastTouchX; 3294 mZoomCenterY = mLastTouchY; 3295 // do not change text wrap scale so that there is no reflow 3296 setNewZoomScale(mDefaultScale, false, false); 3297 didUpdateTextViewBounds(true); 3298 } 3299 } 3300 else { // used by plugins 3301 imm.showSoftInput(this, 0); 3302 } 3303 } 3304 3305 // Called by WebKit to instruct the UI to hide the keyboard 3306 private void hideSoftKeyboard() { 3307 InputMethodManager imm = (InputMethodManager) 3308 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3309 3310 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3311 } 3312 3313 /* 3314 * This method checks the current focus and cursor and potentially rebuilds 3315 * mWebTextView to have the appropriate properties, such as password, 3316 * multiline, and what text it contains. It also removes it if necessary. 3317 */ 3318 /* package */ void rebuildWebTextView() { 3319 // If the WebView does not have focus, do nothing until it gains focus. 3320 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3321 return; 3322 } 3323 boolean alreadyThere = inEditingMode(); 3324 // inEditingMode can only return true if mWebTextView is non-null, 3325 // so we can safely call remove() if (alreadyThere) 3326 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3327 if (alreadyThere) { 3328 mWebTextView.remove(); 3329 } 3330 return; 3331 } 3332 // At this point, we know we have found an input field, so go ahead 3333 // and create the WebTextView if necessary. 3334 if (mWebTextView == null) { 3335 mWebTextView = new WebTextView(mContext, WebView.this); 3336 // Initialize our generation number. 3337 mTextGeneration = 0; 3338 } 3339 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3340 contentToViewDimension(nativeFocusCandidateTextSize())); 3341 Rect visibleRect = new Rect(); 3342 calcOurContentVisibleRect(visibleRect); 3343 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3344 // should be in content coordinates. 3345 Rect bounds = nativeFocusCandidateNodeBounds(); 3346 Rect vBox = contentToViewRect(bounds); 3347 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3348 if (!Rect.intersects(bounds, visibleRect)) { 3349 mWebTextView.bringIntoView(); 3350 } 3351 String text = nativeFocusCandidateText(); 3352 int nodePointer = nativeFocusCandidatePointer(); 3353 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3354 // It is possible that we have the same textfield, but it has moved, 3355 // i.e. In the case of opening/closing the screen. 3356 // In that case, we need to set the dimensions, but not the other 3357 // aspects. 3358 // If the text has been changed by webkit, update it. However, if 3359 // there has been more UI text input, ignore it. We will receive 3360 // another update when that text is recognized. 3361 if (text != null && !text.equals(mWebTextView.getText().toString()) 3362 && nativeTextGeneration() == mTextGeneration) { 3363 mWebTextView.setTextAndKeepSelection(text); 3364 } 3365 } else { 3366 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3367 Gravity.RIGHT : Gravity.NO_GRAVITY); 3368 // This needs to be called before setType, which may call 3369 // requestFormData, and it needs to have the correct nodePointer. 3370 mWebTextView.setNodePointer(nodePointer); 3371 mWebTextView.setType(nativeFocusCandidateType()); 3372 if (null == text) { 3373 if (DebugFlags.WEB_VIEW) { 3374 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3375 } 3376 text = ""; 3377 } 3378 mWebTextView.setTextAndKeepSelection(text); 3379 InputMethodManager imm = InputMethodManager.peekInstance(); 3380 if (imm != null && imm.isActive(mWebTextView)) { 3381 imm.restartInput(mWebTextView); 3382 } 3383 } 3384 mWebTextView.requestFocus(); 3385 } 3386 3387 /** 3388 * Called by WebTextView to find saved form data associated with the 3389 * textfield 3390 * @param name Name of the textfield. 3391 * @param nodePointer Pointer to the node of the textfield, so it can be 3392 * compared to the currently focused textfield when the data is 3393 * retrieved. 3394 */ 3395 /* package */ void requestFormData(String name, int nodePointer) { 3396 if (mWebViewCore.getSettings().getSaveFormData()) { 3397 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3398 update.arg1 = nodePointer; 3399 RequestFormData updater = new RequestFormData(name, getUrl(), 3400 update); 3401 Thread t = new Thread(updater); 3402 t.start(); 3403 } 3404 } 3405 3406 /** 3407 * Pass a message to find out the <label> associated with the <input> 3408 * identified by nodePointer 3409 * @param framePointer Pointer to the frame containing the <input> node 3410 * @param nodePointer Pointer to the node for which a <label> is desired. 3411 */ 3412 /* package */ void requestLabel(int framePointer, int nodePointer) { 3413 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3414 nodePointer); 3415 } 3416 3417 /* 3418 * This class runs the layers animations in their own thread, 3419 * so that we do not slow down the UI. 3420 */ 3421 private class EvaluateLayersAnimations extends Thread { 3422 boolean mRunning = true; 3423 // delay corresponds to 40fps, no need to go faster. 3424 int mDelay = 25; // in ms 3425 public void run() { 3426 while (mRunning) { 3427 if (mLayersHaveAnimations && mRootLayer != 0) { 3428 // updates is a C++ pointer to a Vector of AnimationValues 3429 int updates = nativeEvaluateLayersAnimations(mRootLayer); 3430 if (updates == 0) { 3431 mRunning = false; 3432 } 3433 Message.obtain(mPrivateHandler, 3434 WebView.IMMEDIATE_REPAINT_MSG_ID, 3435 updates, 0).sendToTarget(); 3436 } else { 3437 mRunning = false; 3438 } 3439 try { 3440 Thread.currentThread().sleep(mDelay); 3441 } catch (InterruptedException e) { 3442 mRunning = false; 3443 } 3444 } 3445 } 3446 public void cancel() { 3447 mRunning = false; 3448 } 3449 } 3450 3451 /* 3452 * This class requests an Adapter for the WebTextView which shows past 3453 * entries stored in the database. It is a Runnable so that it can be done 3454 * in its own thread, without slowing down the UI. 3455 */ 3456 private class RequestFormData implements Runnable { 3457 private String mName; 3458 private String mUrl; 3459 private Message mUpdateMessage; 3460 3461 public RequestFormData(String name, String url, Message msg) { 3462 mName = name; 3463 mUrl = url; 3464 mUpdateMessage = msg; 3465 } 3466 3467 public void run() { 3468 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3469 if (pastEntries.size() > 0) { 3470 AutoCompleteAdapter adapter = new 3471 AutoCompleteAdapter(mContext, pastEntries); 3472 mUpdateMessage.obj = adapter; 3473 mUpdateMessage.sendToTarget(); 3474 } 3475 } 3476 } 3477 3478 /** 3479 * Dump the display tree to "/sdcard/displayTree.txt" 3480 * 3481 * @hide debug only 3482 */ 3483 public void dumpDisplayTree() { 3484 nativeDumpDisplayTree(getUrl()); 3485 } 3486 3487 /** 3488 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 3489 * "/sdcard/domTree.txt" 3490 * 3491 * @hide debug only 3492 */ 3493 public void dumpDomTree(boolean toFile) { 3494 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 3495 } 3496 3497 /** 3498 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 3499 * to "/sdcard/renderTree.txt" 3500 * 3501 * @hide debug only 3502 */ 3503 public void dumpRenderTree(boolean toFile) { 3504 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 3505 } 3506 3507 /** 3508 * Dump the V8 counters to standard output. 3509 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 3510 * true. Otherwise, this will do nothing. 3511 * 3512 * @hide debug only 3513 */ 3514 public void dumpV8Counters() { 3515 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 3516 } 3517 3518 // This is used to determine long press with the center key. Does not 3519 // affect long press with the trackball/touch. 3520 private boolean mGotCenterDown = false; 3521 3522 @Override 3523 public boolean onKeyDown(int keyCode, KeyEvent event) { 3524 if (DebugFlags.WEB_VIEW) { 3525 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3526 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3527 } 3528 3529 if (mNativeClass == 0) { 3530 return false; 3531 } 3532 3533 // do this hack up front, so it always works, regardless of touch-mode 3534 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3535 mAutoRedraw = !mAutoRedraw; 3536 if (mAutoRedraw) { 3537 invalidate(); 3538 } 3539 return true; 3540 } 3541 3542 // Bubble up the key event if 3543 // 1. it is a system key; or 3544 // 2. the host application wants to handle it; 3545 if (event.isSystem() 3546 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3547 return false; 3548 } 3549 3550 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3551 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3552 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3553 setUpSelectXY(); 3554 } 3555 3556 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3557 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3558 // always handle the navigation keys in the UI thread 3559 switchOutDrawHistory(); 3560 if (mShiftIsPressed) { 3561 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 3562 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 3563 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 3564 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 3565 int multiplier = event.getRepeatCount() + 1; 3566 moveSelection(xRate * multiplier, yRate * multiplier); 3567 return true; 3568 } 3569 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3570 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3571 return true; 3572 } 3573 // Bubble up the key event as WebView doesn't handle it 3574 return false; 3575 } 3576 3577 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3578 switchOutDrawHistory(); 3579 if (event.getRepeatCount() == 0) { 3580 if (mShiftIsPressed) { 3581 return true; // discard press if copy in progress 3582 } 3583 mGotCenterDown = true; 3584 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3585 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3586 // Already checked mNativeClass, so we do not need to check it 3587 // again. 3588 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3589 return true; 3590 } 3591 // Bubble up the key event as WebView doesn't handle it 3592 return false; 3593 } 3594 3595 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3596 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3597 // turn off copy select if a shift-key combo is pressed 3598 mExtendSelection = mShiftIsPressed = false; 3599 if (mTouchMode == TOUCH_SELECT_MODE) { 3600 mTouchMode = TOUCH_INIT_MODE; 3601 } 3602 } 3603 3604 if (getSettings().getNavDump()) { 3605 switch (keyCode) { 3606 case KeyEvent.KEYCODE_4: 3607 dumpDisplayTree(); 3608 break; 3609 case KeyEvent.KEYCODE_5: 3610 case KeyEvent.KEYCODE_6: 3611 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 3612 break; 3613 case KeyEvent.KEYCODE_7: 3614 case KeyEvent.KEYCODE_8: 3615 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 3616 break; 3617 case KeyEvent.KEYCODE_9: 3618 nativeInstrumentReport(); 3619 return true; 3620 } 3621 } 3622 3623 if (nativeCursorIsTextInput()) { 3624 // This message will put the node in focus, for the DOM's notion 3625 // of focus, and make the focuscontroller active 3626 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3627 nativeCursorNodePointer()); 3628 // This will bring up the WebTextView and put it in focus, for 3629 // our view system's notion of focus 3630 rebuildWebTextView(); 3631 // Now we need to pass the event to it 3632 if (inEditingMode()) { 3633 mWebTextView.setDefaultSelection(); 3634 return mWebTextView.dispatchKeyEvent(event); 3635 } 3636 } else if (nativeHasFocusNode()) { 3637 // In this case, the cursor is not on a text input, but the focus 3638 // might be. Check it, and if so, hand over to the WebTextView. 3639 rebuildWebTextView(); 3640 if (inEditingMode()) { 3641 return mWebTextView.dispatchKeyEvent(event); 3642 } 3643 } 3644 3645 // TODO: should we pass all the keys to DOM or check the meta tag 3646 if (nativeCursorWantsKeyEvents() || true) { 3647 // pass the key to DOM 3648 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3649 // return true as DOM handles the key 3650 return true; 3651 } 3652 3653 // Bubble up the key event as WebView doesn't handle it 3654 return false; 3655 } 3656 3657 @Override 3658 public boolean onKeyUp(int keyCode, KeyEvent event) { 3659 if (DebugFlags.WEB_VIEW) { 3660 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3661 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3662 } 3663 3664 if (mNativeClass == 0) { 3665 return false; 3666 } 3667 3668 // special CALL handling when cursor node's href is "tel:XXX" 3669 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3670 String text = nativeCursorText(); 3671 if (!nativeCursorIsTextInput() && text != null 3672 && text.startsWith(SCHEME_TEL)) { 3673 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3674 getContext().startActivity(intent); 3675 return true; 3676 } 3677 } 3678 3679 // Bubble up the key event if 3680 // 1. it is a system key; or 3681 // 2. the host application wants to handle it; 3682 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3683 return false; 3684 } 3685 3686 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3687 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3688 if (commitCopy()) { 3689 return true; 3690 } 3691 } 3692 3693 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3694 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3695 // always handle the navigation keys in the UI thread 3696 // Bubble up the key event as WebView doesn't handle it 3697 return false; 3698 } 3699 3700 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3701 // remove the long press message first 3702 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3703 mGotCenterDown = false; 3704 3705 if (mShiftIsPressed) { 3706 if (mExtendSelection) { 3707 commitCopy(); 3708 } else { 3709 mExtendSelection = true; 3710 invalidate(); // draw the i-beam instead of the arrow 3711 } 3712 return true; // discard press if copy in progress 3713 } 3714 3715 // perform the single click 3716 Rect visibleRect = sendOurVisibleRect(); 3717 // Note that sendOurVisibleRect calls viewToContent, so the 3718 // coordinates should be in content coordinates. 3719 if (!nativeCursorIntersects(visibleRect)) { 3720 return false; 3721 } 3722 WebViewCore.CursorData data = cursorData(); 3723 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3724 playSoundEffect(SoundEffectConstants.CLICK); 3725 if (nativeCursorIsTextInput()) { 3726 rebuildWebTextView(); 3727 centerKeyPressOnTextField(); 3728 if (inEditingMode()) { 3729 mWebTextView.setDefaultSelection(); 3730 } 3731 return true; 3732 } 3733 nativeSetFollowedLink(true); 3734 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 3735 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3736 nativeCursorNodePointer()); 3737 } 3738 return true; 3739 } 3740 3741 // TODO: should we pass all the keys to DOM or check the meta tag 3742 if (nativeCursorWantsKeyEvents() || true) { 3743 // pass the key to DOM 3744 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3745 // return true as DOM handles the key 3746 return true; 3747 } 3748 3749 // Bubble up the key event as WebView doesn't handle it 3750 return false; 3751 } 3752 3753 private void setUpSelectXY() { 3754 mExtendSelection = false; 3755 mShiftIsPressed = true; 3756 if (nativeHasCursorNode()) { 3757 Rect rect = nativeCursorNodeBounds(); 3758 mSelectX = contentToViewX(rect.left); 3759 mSelectY = contentToViewY(rect.top); 3760 } else if (mLastTouchY > getVisibleTitleHeight()) { 3761 mSelectX = mScrollX + (int) mLastTouchX; 3762 mSelectY = mScrollY + (int) mLastTouchY; 3763 } else { 3764 mSelectX = mScrollX + getViewWidth() / 2; 3765 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 3766 } 3767 nativeHideCursor(); 3768 } 3769 3770 public void emulateShiftHeld() { 3771 if (0 == mNativeClass) return; // client isn't initialized 3772 setUpSelectXY(); 3773 } 3774 3775 private boolean commitCopy() { 3776 boolean copiedSomething = false; 3777 if (mExtendSelection) { 3778 String selection = nativeGetSelection(); 3779 if (selection != "") { 3780 if (DebugFlags.WEB_VIEW) { 3781 Log.v(LOGTAG, "commitCopy \"" + selection + "\""); 3782 } 3783 Toast.makeText(mContext 3784 , com.android.internal.R.string.text_copied 3785 , Toast.LENGTH_SHORT).show(); 3786 copiedSomething = true; 3787 try { 3788 IClipboard clip = IClipboard.Stub.asInterface( 3789 ServiceManager.getService("clipboard")); 3790 clip.setClipboardText(selection); 3791 } catch (android.os.RemoteException e) { 3792 Log.e(LOGTAG, "Clipboard failed", e); 3793 } 3794 } 3795 mExtendSelection = false; 3796 } 3797 mShiftIsPressed = false; 3798 invalidate(); // remove selection region and pointer 3799 if (mTouchMode == TOUCH_SELECT_MODE) { 3800 mTouchMode = TOUCH_INIT_MODE; 3801 } 3802 return copiedSomething; 3803 } 3804 3805 @Override 3806 protected void onAttachedToWindow() { 3807 super.onAttachedToWindow(); 3808 if (hasWindowFocus()) onWindowFocusChanged(true); 3809 } 3810 3811 @Override 3812 protected void onDetachedFromWindow() { 3813 clearTextEntry(); 3814 super.onDetachedFromWindow(); 3815 // Clean up the zoom controller 3816 mZoomButtonsController.setVisible(false); 3817 } 3818 3819 /** 3820 * @deprecated WebView no longer needs to implement 3821 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3822 */ 3823 @Deprecated 3824 public void onChildViewAdded(View parent, View child) {} 3825 3826 /** 3827 * @deprecated WebView no longer needs to implement 3828 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3829 */ 3830 @Deprecated 3831 public void onChildViewRemoved(View p, View child) {} 3832 3833 /** 3834 * @deprecated WebView should not have implemented 3835 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3836 * does nothing now. 3837 */ 3838 @Deprecated 3839 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3840 } 3841 3842 // To avoid drawing the cursor ring, and remove the TextView when our window 3843 // loses focus. 3844 @Override 3845 public void onWindowFocusChanged(boolean hasWindowFocus) { 3846 if (hasWindowFocus) { 3847 if (hasFocus()) { 3848 // If our window regained focus, and we have focus, then begin 3849 // drawing the cursor ring 3850 mDrawCursorRing = true; 3851 if (mNativeClass != 0) { 3852 nativeRecordButtons(true, false, true); 3853 if (inEditingMode()) { 3854 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3855 } 3856 } 3857 } else { 3858 // If our window gained focus, but we do not have it, do not 3859 // draw the cursor ring. 3860 mDrawCursorRing = false; 3861 // We do not call nativeRecordButtons here because we assume 3862 // that when we lost focus, or window focus, it got called with 3863 // false for the first parameter 3864 } 3865 } else { 3866 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3867 /* 3868 * The zoom controls come in their own window, so our window 3869 * loses focus. Our policy is to not draw the cursor ring if 3870 * our window is not focused, but this is an exception since 3871 * the user can still navigate the web page with the zoom 3872 * controls showing. 3873 */ 3874 // If our window has lost focus, stop drawing the cursor ring 3875 mDrawCursorRing = false; 3876 } 3877 mGotKeyDown = false; 3878 mShiftIsPressed = false; 3879 if (mNativeClass != 0) { 3880 nativeRecordButtons(false, false, true); 3881 } 3882 setFocusControllerInactive(); 3883 } 3884 invalidate(); 3885 super.onWindowFocusChanged(hasWindowFocus); 3886 } 3887 3888 /* 3889 * Pass a message to WebCore Thread, telling the WebCore::Page's 3890 * FocusController to be "inactive" so that it will 3891 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3892 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3893 */ 3894 /* package */ void setFocusControllerInactive() { 3895 // Do not need to also check whether mWebViewCore is null, because 3896 // mNativeClass is only set if mWebViewCore is non null 3897 if (mNativeClass == 0) return; 3898 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 3899 } 3900 3901 @Override 3902 protected void onFocusChanged(boolean focused, int direction, 3903 Rect previouslyFocusedRect) { 3904 if (DebugFlags.WEB_VIEW) { 3905 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3906 } 3907 if (focused) { 3908 // When we regain focus, if we have window focus, resume drawing 3909 // the cursor ring 3910 if (hasWindowFocus()) { 3911 mDrawCursorRing = true; 3912 if (mNativeClass != 0) { 3913 nativeRecordButtons(true, false, true); 3914 } 3915 //} else { 3916 // The WebView has gained focus while we do not have 3917 // windowfocus. When our window lost focus, we should have 3918 // called nativeRecordButtons(false...) 3919 } 3920 } else { 3921 // When we lost focus, unless focus went to the TextView (which is 3922 // true if we are in editing mode), stop drawing the cursor ring. 3923 if (!inEditingMode()) { 3924 mDrawCursorRing = false; 3925 if (mNativeClass != 0) { 3926 nativeRecordButtons(false, false, true); 3927 } 3928 setFocusControllerInactive(); 3929 } 3930 mGotKeyDown = false; 3931 } 3932 3933 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3934 } 3935 3936 /** 3937 * @hide 3938 */ 3939 @Override 3940 protected boolean setFrame(int left, int top, int right, int bottom) { 3941 boolean changed = super.setFrame(left, top, right, bottom); 3942 if (!changed && mHeightCanMeasure) { 3943 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 3944 // in WebViewCore after we get the first layout. We do call 3945 // requestLayout() when we get contentSizeChanged(). But the View 3946 // system won't call onSizeChanged if the dimension is not changed. 3947 // In this case, we need to call sendViewSizeZoom() explicitly to 3948 // notify the WebKit about the new dimensions. 3949 sendViewSizeZoom(); 3950 } 3951 return changed; 3952 } 3953 3954 private static class PostScale implements Runnable { 3955 final WebView mWebView; 3956 final boolean mUpdateTextWrap; 3957 3958 public PostScale(WebView webView, boolean updateTextWrap) { 3959 mWebView = webView; 3960 mUpdateTextWrap = updateTextWrap; 3961 } 3962 3963 public void run() { 3964 if (mWebView.mWebViewCore != null) { 3965 // we always force, in case our height changed, in which case we 3966 // still want to send the notification over to webkit. 3967 mWebView.setNewZoomScale(mWebView.mActualScale, 3968 mUpdateTextWrap, true); 3969 } 3970 } 3971 } 3972 3973 @Override 3974 protected void onSizeChanged(int w, int h, int ow, int oh) { 3975 super.onSizeChanged(w, h, ow, oh); 3976 // Center zooming to the center of the screen. 3977 if (mZoomScale == 0) { // unless we're already zooming 3978 // To anchor at top left corner. 3979 mZoomCenterX = 0; 3980 mZoomCenterY = getVisibleTitleHeight(); 3981 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 3982 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 3983 } 3984 3985 // adjust the max viewport width depending on the view dimensions. This 3986 // is to ensure the scaling is not going insane. So do not shrink it if 3987 // the view size is temporarily smaller, e.g. when soft keyboard is up. 3988 int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE); 3989 if (newMaxViewportWidth > sMaxViewportWidth) { 3990 sMaxViewportWidth = newMaxViewportWidth; 3991 } 3992 3993 // update mMinZoomScale if the minimum zoom scale is not fixed 3994 if (!mMinZoomScaleFixed) { 3995 // when change from narrow screen to wide screen, the new viewWidth 3996 // can be wider than the old content width. We limit the minimum 3997 // scale to 1.0f. The proper minimum scale will be calculated when 3998 // the new picture shows up. 3999 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 4000 / (mDrawHistory ? mHistoryPicture.getWidth() 4001 : mZoomOverviewWidth)); 4002 if (mInitialScaleInPercent > 0) { 4003 // limit the minZoomScale to the initialScale if it is set 4004 float initialScale = mInitialScaleInPercent / 100.0f; 4005 if (mMinZoomScale > initialScale) { 4006 mMinZoomScale = initialScale; 4007 } 4008 } 4009 } 4010 4011 // onSizeChanged() is called during WebView layout. And any 4012 // requestLayout() is blocked during layout. As setNewZoomScale() will 4013 // call its child View to reposition itself through ViewManager's 4014 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 4015 // <b/> 4016 // only update the text wrap scale if width changed. 4017 post(new PostScale(this, w != ow)); 4018 } 4019 4020 @Override 4021 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4022 super.onScrollChanged(l, t, oldl, oldt); 4023 sendOurVisibleRect(); 4024 } 4025 4026 4027 @Override 4028 public boolean dispatchKeyEvent(KeyEvent event) { 4029 boolean dispatch = true; 4030 4031 if (!inEditingMode()) { 4032 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4033 mGotKeyDown = true; 4034 } else { 4035 if (!mGotKeyDown) { 4036 /* 4037 * We got a key up for which we were not the recipient of 4038 * the original key down. Don't give it to the view. 4039 */ 4040 dispatch = false; 4041 } 4042 mGotKeyDown = false; 4043 } 4044 } 4045 4046 if (dispatch) { 4047 return super.dispatchKeyEvent(event); 4048 } else { 4049 // We didn't dispatch, so let something else handle the key 4050 return false; 4051 } 4052 } 4053 4054 // Here are the snap align logic: 4055 // 1. If it starts nearly horizontally or vertically, snap align; 4056 // 2. If there is a dramitic direction change, let it go; 4057 // 3. If there is a same direction back and forth, lock it. 4058 4059 // adjustable parameters 4060 private int mMinLockSnapReverseDistance; 4061 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4062 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4063 4064 private static int sign(float x) { 4065 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4066 } 4067 4068 // if the page can scroll <= this value, we won't allow the drag tracker 4069 // to have any effect. 4070 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4071 4072 private class DragTrackerHandler { 4073 private final DragTracker mProxy; 4074 private final float mStartY, mStartX; 4075 private final float mMinDY, mMinDX; 4076 private final float mMaxDY, mMaxDX; 4077 private float mCurrStretchY, mCurrStretchX; 4078 private int mSX, mSY; 4079 private Interpolator mInterp; 4080 private float[] mXY = new float[2]; 4081 4082 // inner (non-state) classes can't have enums :( 4083 private static final int DRAGGING_STATE = 0; 4084 private static final int ANIMATING_STATE = 1; 4085 private static final int FINISHED_STATE = 2; 4086 private int mState; 4087 4088 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4089 mProxy = proxy; 4090 4091 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4092 int viewTop = getScrollY(); 4093 int viewBottom = viewTop + getHeight(); 4094 4095 mStartY = y; 4096 mMinDY = -viewTop; 4097 mMaxDY = docBottom - viewBottom; 4098 4099 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4100 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4101 " up/down= " + mMinDY + " " + mMaxDY); 4102 } 4103 4104 int docRight = computeHorizontalScrollRange(); 4105 int viewLeft = getScrollX(); 4106 int viewRight = viewLeft + getWidth(); 4107 mStartX = x; 4108 mMinDX = -viewLeft; 4109 mMaxDX = docRight - viewRight; 4110 4111 mState = DRAGGING_STATE; 4112 mProxy.onStartDrag(x, y); 4113 4114 // ensure we buildBitmap at least once 4115 mSX = -99999; 4116 } 4117 4118 private float computeStretch(float delta, float min, float max) { 4119 float stretch = 0; 4120 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4121 if (delta < min) { 4122 stretch = delta - min; 4123 } else if (delta > max) { 4124 stretch = delta - max; 4125 } 4126 } 4127 return stretch; 4128 } 4129 4130 public void dragTo(float x, float y) { 4131 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4132 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4133 4134 if ((mSnapScrollMode & SNAP_X) != 0) { 4135 sy = 0; 4136 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4137 sx = 0; 4138 } 4139 4140 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4141 mCurrStretchX = sx; 4142 mCurrStretchY = sy; 4143 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4144 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4145 " " + sy); 4146 } 4147 if (mProxy.onStretchChange(sx, sy)) { 4148 invalidate(); 4149 } 4150 } 4151 } 4152 4153 public void stopDrag() { 4154 final int DURATION = 200; 4155 int now = (int)SystemClock.uptimeMillis(); 4156 mInterp = new Interpolator(2); 4157 mXY[0] = mCurrStretchX; 4158 mXY[1] = mCurrStretchY; 4159 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4160 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4161 mInterp.setKeyFrame(0, now, mXY, blend); 4162 float[] zerozero = new float[] { 0, 0 }; 4163 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4164 mState = ANIMATING_STATE; 4165 4166 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4167 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4168 } 4169 } 4170 4171 // Call this after each draw. If it ruturns null, the tracker is done 4172 public boolean isFinished() { 4173 return mState == FINISHED_STATE; 4174 } 4175 4176 private int hiddenHeightOfTitleBar() { 4177 return getTitleHeight() - getVisibleTitleHeight(); 4178 } 4179 4180 // need a way to know if 565 or 8888 is the right config for 4181 // capturing the display and giving it to the drag proxy 4182 private Bitmap.Config offscreenBitmapConfig() { 4183 // hard code 565 for now 4184 return Bitmap.Config.RGB_565; 4185 } 4186 4187 /* If the tracker draws, then this returns true, otherwise it will 4188 return false, and draw nothing. 4189 */ 4190 public boolean draw(Canvas canvas) { 4191 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4192 int sx = getScrollX(); 4193 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4194 if (mSX != sx || mSY != sy) { 4195 buildBitmap(sx, sy); 4196 mSX = sx; 4197 mSY = sy; 4198 } 4199 4200 if (mState == ANIMATING_STATE) { 4201 Interpolator.Result result = mInterp.timeToValues(mXY); 4202 if (result == Interpolator.Result.FREEZE_END) { 4203 mState = FINISHED_STATE; 4204 return false; 4205 } else { 4206 mProxy.onStretchChange(mXY[0], mXY[1]); 4207 invalidate(); 4208 // fall through to the draw 4209 } 4210 } 4211 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4212 canvas.translate(sx, sy); 4213 mProxy.onDraw(canvas); 4214 canvas.restoreToCount(count); 4215 return true; 4216 } 4217 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4218 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4219 mCurrStretchX + " " + mCurrStretchY); 4220 } 4221 return false; 4222 } 4223 4224 private void buildBitmap(int sx, int sy) { 4225 int w = getWidth(); 4226 int h = getViewHeight(); 4227 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4228 Canvas canvas = new Canvas(bm); 4229 canvas.translate(-sx, -sy); 4230 drawContent(canvas); 4231 4232 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4233 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4234 " " + sy + " " + w + " " + h); 4235 } 4236 mProxy.onBitmapChange(bm); 4237 } 4238 } 4239 4240 /** @hide */ 4241 public static class DragTracker { 4242 public void onStartDrag(float x, float y) {} 4243 public boolean onStretchChange(float sx, float sy) { 4244 // return true to have us inval the view 4245 return false; 4246 } 4247 public void onStopDrag() {} 4248 public void onBitmapChange(Bitmap bm) {} 4249 public void onDraw(Canvas canvas) {} 4250 } 4251 4252 /** @hide */ 4253 public DragTracker getDragTracker() { 4254 return mDragTracker; 4255 } 4256 4257 /** @hide */ 4258 public void setDragTracker(DragTracker tracker) { 4259 mDragTracker = tracker; 4260 } 4261 4262 private DragTracker mDragTracker; 4263 private DragTrackerHandler mDragTrackerHandler; 4264 4265 private class ScaleDetectorListener implements 4266 ScaleGestureDetector.OnScaleGestureListener { 4267 4268 public boolean onScaleBegin(ScaleGestureDetector detector) { 4269 // cancel the single touch handling 4270 cancelTouch(); 4271 if (mZoomButtonsController.isVisible()) { 4272 mZoomButtonsController.setVisible(false); 4273 } 4274 // reset the zoom overview mode so that the page won't auto grow 4275 mInZoomOverview = false; 4276 // If it is in password mode, turn it off so it does not draw 4277 // misplaced. 4278 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4279 mWebTextView.setInPassword(false); 4280 } 4281 return true; 4282 } 4283 4284 public void onScaleEnd(ScaleGestureDetector detector) { 4285 if (mPreviewZoomOnly) { 4286 mPreviewZoomOnly = false; 4287 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4288 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4289 // don't reflow when zoom in; when zoom out, do reflow if the 4290 // new scale is almost minimum scale; 4291 boolean reflowNow = (mActualScale - mMinZoomScale <= 0.01f) 4292 || ((mActualScale <= 0.8 * mTextWrapScale)); 4293 // force zoom after mPreviewZoomOnly is set to false so that the 4294 // new view size will be passed to the WebKit 4295 setNewZoomScale(mActualScale, reflowNow, true); 4296 // call invalidate() to draw without zoom filter 4297 invalidate(); 4298 } 4299 // adjust the edit text view if needed 4300 if (inEditingMode() && didUpdateTextViewBounds(false) 4301 && nativeFocusCandidateIsPassword()) { 4302 // If it is a password field, start drawing the 4303 // WebTextView once again. 4304 mWebTextView.setInPassword(true); 4305 } 4306 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4307 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4308 // may trigger the unwanted fling. 4309 mTouchMode = TOUCH_PINCH_DRAG; 4310 startTouch(detector.getFocusX(), detector.getFocusY(), 4311 mLastTouchTime); 4312 } 4313 4314 public boolean onScale(ScaleGestureDetector detector) { 4315 float scale = (float) (Math.round(detector.getScaleFactor() 4316 * mActualScale * 100) / 100.0); 4317 if (Math.abs(scale - mActualScale) >= PREVIEW_SCALE_INCREMENT) { 4318 mPreviewZoomOnly = true; 4319 // limit the scale change per step 4320 if (scale > mActualScale) { 4321 scale = Math.min(scale, mActualScale * 1.25f); 4322 } else { 4323 scale = Math.max(scale, mActualScale * 0.8f); 4324 } 4325 mZoomCenterX = detector.getFocusX(); 4326 mZoomCenterY = detector.getFocusY(); 4327 setNewZoomScale(scale, false, false); 4328 invalidate(); 4329 return true; 4330 } 4331 return false; 4332 } 4333 } 4334 4335 @Override 4336 public boolean onTouchEvent(MotionEvent ev) { 4337 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4338 return false; 4339 } 4340 4341 if (DebugFlags.WEB_VIEW) { 4342 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4343 + mTouchMode); 4344 } 4345 4346 int action; 4347 float x, y; 4348 long eventTime = ev.getEventTime(); 4349 4350 // FIXME: we may consider to give WebKit an option to handle multi-touch 4351 // events later. 4352 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 4353 if (mMinZoomScale < mMaxZoomScale) { 4354 mScaleDetector.onTouchEvent(ev); 4355 if (mScaleDetector.isInProgress()) { 4356 mLastTouchTime = eventTime; 4357 return true; 4358 } 4359 x = mScaleDetector.getFocusX(); 4360 y = mScaleDetector.getFocusY(); 4361 action = ev.getAction() & MotionEvent.ACTION_MASK; 4362 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4363 cancelTouch(); 4364 action = MotionEvent.ACTION_DOWN; 4365 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4366 // set mLastTouchX/Y to the remaining point 4367 mLastTouchX = x; 4368 mLastTouchY = y; 4369 } else if (action == MotionEvent.ACTION_MOVE) { 4370 // negative x or y indicate it is on the edge, skip it. 4371 if (x < 0 || y < 0) { 4372 return true; 4373 } 4374 } 4375 } else { 4376 // if the page disallow zoom, skip multi-pointer action 4377 return true; 4378 } 4379 } else { 4380 action = ev.getAction(); 4381 x = ev.getX(); 4382 y = ev.getY(); 4383 } 4384 4385 // Due to the touch screen edge effect, a touch closer to the edge 4386 // always snapped to the edge. As getViewWidth() can be different from 4387 // getWidth() due to the scrollbar, adjusting the point to match 4388 // getViewWidth(). Same applied to the height. 4389 if (x > getViewWidth() - 1) { 4390 x = getViewWidth() - 1; 4391 } 4392 if (y > getViewHeightWithTitle() - 1) { 4393 y = getViewHeightWithTitle() - 1; 4394 } 4395 4396 // pass the touch events from UI thread to WebCore thread 4397 if (mForwardTouchEvents && (action != MotionEvent.ACTION_MOVE 4398 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 4399 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 4400 ted.mAction = action; 4401 ted.mX = viewToContentX((int) x + mScrollX); 4402 ted.mY = viewToContentY((int) y + mScrollY); 4403 ted.mEventTime = eventTime; 4404 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4405 mLastSentTouchTime = eventTime; 4406 } 4407 4408 float fDeltaX = mLastTouchX - x; 4409 float fDeltaY = mLastTouchY - y; 4410 int deltaX = (int) fDeltaX; 4411 int deltaY = (int) fDeltaY; 4412 4413 switch (action) { 4414 case MotionEvent.ACTION_DOWN: { 4415 mPreventDrag = PREVENT_DRAG_NO; 4416 if (!mScroller.isFinished()) { 4417 // stop the current scroll animation, but if this is 4418 // the start of a fling, allow it to add to the current 4419 // fling's velocity 4420 mScroller.abortAnimation(); 4421 mTouchMode = TOUCH_DRAG_START_MODE; 4422 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 4423 } else if (mShiftIsPressed) { 4424 mSelectX = mScrollX + (int) x; 4425 mSelectY = mScrollY + (int) y; 4426 mTouchMode = TOUCH_SELECT_MODE; 4427 if (DebugFlags.WEB_VIEW) { 4428 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 4429 } 4430 nativeMoveSelection(viewToContentX(mSelectX), 4431 viewToContentY(mSelectY), false); 4432 mTouchSelection = mExtendSelection = true; 4433 invalidate(); // draw the i-beam instead of the arrow 4434 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4435 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4436 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4437 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4438 } else { 4439 // commit the short press action for the previous tap 4440 doShortPress(); 4441 // continue, mTouchMode should be still TOUCH_INIT_MODE 4442 } 4443 } else { 4444 mPreviewZoomOnly = false; 4445 mTouchMode = TOUCH_INIT_MODE; 4446 mPreventDrag = mForwardTouchEvents ? PREVENT_DRAG_MAYBE_YES 4447 : PREVENT_DRAG_NO; 4448 mPreventLongPress = false; 4449 mPreventDoubleTap = false; 4450 mWebViewCore.sendMessage( 4451 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4452 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4453 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 4454 (eventTime - mLastTouchUpTime), eventTime); 4455 } 4456 } 4457 // Trigger the link 4458 if (mTouchMode == TOUCH_INIT_MODE 4459 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4460 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4461 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 4462 } 4463 startTouch(x, y, eventTime); 4464 break; 4465 } 4466 case MotionEvent.ACTION_MOVE: { 4467 if (mTouchMode == TOUCH_DONE_MODE) { 4468 // no dragging during scroll zoom animation 4469 break; 4470 } 4471 mVelocityTracker.addMovement(ev); 4472 4473 if (mTouchMode != TOUCH_DRAG_MODE) { 4474 if (mTouchMode == TOUCH_SELECT_MODE) { 4475 mSelectX = mScrollX + (int) x; 4476 mSelectY = mScrollY + (int) y; 4477 if (DebugFlags.WEB_VIEW) { 4478 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 4479 } 4480 nativeMoveSelection(viewToContentX(mSelectX), 4481 viewToContentY(mSelectY), true); 4482 invalidate(); 4483 break; 4484 } 4485 if ((deltaX * deltaX + deltaY * deltaY) < mTouchSlopSquare) { 4486 break; 4487 } 4488 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 4489 // track mLastTouchTime as we may need to do fling at 4490 // ACTION_UP 4491 mLastTouchTime = eventTime; 4492 break; 4493 } 4494 if (mTouchMode == TOUCH_SHORTPRESS_MODE 4495 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4496 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4497 } else if (mTouchMode == TOUCH_INIT_MODE 4498 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4499 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4500 } 4501 if (mFullScreenHolder != null) { 4502 // in full screen mode, the WebView can't be panned. 4503 mTouchMode = TOUCH_DONE_MODE; 4504 break; 4505 } 4506 4507 // if it starts nearly horizontal or vertical, enforce it 4508 int ax = Math.abs(deltaX); 4509 int ay = Math.abs(deltaY); 4510 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4511 mSnapScrollMode = SNAP_X; 4512 mSnapPositive = deltaX > 0; 4513 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4514 mSnapScrollMode = SNAP_Y; 4515 mSnapPositive = deltaY > 0; 4516 } 4517 4518 mTouchMode = TOUCH_DRAG_MODE; 4519 mLastTouchX = x; 4520 mLastTouchY = y; 4521 fDeltaX = 0.0f; 4522 fDeltaY = 0.0f; 4523 deltaX = 0; 4524 deltaY = 0; 4525 4526 WebViewCore.reducePriority(); 4527 if (!mDragFromTextInput) { 4528 nativeHideCursor(); 4529 } 4530 WebSettings settings = getSettings(); 4531 if (settings.supportZoom() 4532 && settings.getBuiltInZoomControls() 4533 && !mZoomButtonsController.isVisible() 4534 && mMinZoomScale < mMaxZoomScale) { 4535 mZoomButtonsController.setVisible(true); 4536 int count = settings.getDoubleTapToastCount(); 4537 if (mInZoomOverview && count > 0) { 4538 settings.setDoubleTapToastCount(--count); 4539 Toast.makeText(mContext, 4540 com.android.internal.R.string.double_tap_toast, 4541 Toast.LENGTH_LONG).show(); 4542 } 4543 } 4544 } 4545 4546 // do pan 4547 int newScrollX = pinLocX(mScrollX + deltaX); 4548 int newDeltaX = newScrollX - mScrollX; 4549 if (deltaX != newDeltaX) { 4550 deltaX = newDeltaX; 4551 fDeltaX = (float) newDeltaX; 4552 } 4553 int newScrollY = pinLocY(mScrollY + deltaY); 4554 int newDeltaY = newScrollY - mScrollY; 4555 if (deltaY != newDeltaY) { 4556 deltaY = newDeltaY; 4557 fDeltaY = (float) newDeltaY; 4558 } 4559 boolean done = false; 4560 boolean keepScrollBarsVisible = false; 4561 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 4562 keepScrollBarsVisible = done = true; 4563 } else { 4564 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4565 int ax = Math.abs(deltaX); 4566 int ay = Math.abs(deltaY); 4567 if (mSnapScrollMode == SNAP_X) { 4568 // radical change means getting out of snap mode 4569 if (ay > MAX_SLOPE_FOR_DIAG * ax 4570 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4571 mSnapScrollMode = SNAP_NONE; 4572 } 4573 // reverse direction means lock in the snap mode 4574 if (ax > MAX_SLOPE_FOR_DIAG * ay && 4575 (mSnapPositive 4576 ? deltaX < -mMinLockSnapReverseDistance 4577 : deltaX > mMinLockSnapReverseDistance)) { 4578 mSnapScrollMode |= SNAP_LOCK; 4579 } 4580 } else { 4581 // radical change means getting out of snap mode 4582 if (ax > MAX_SLOPE_FOR_DIAG * ay 4583 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4584 mSnapScrollMode = SNAP_NONE; 4585 } 4586 // reverse direction means lock in the snap mode 4587 if (ay > MAX_SLOPE_FOR_DIAG * ax && 4588 (mSnapPositive 4589 ? deltaY < -mMinLockSnapReverseDistance 4590 : deltaY > mMinLockSnapReverseDistance)) { 4591 mSnapScrollMode |= SNAP_LOCK; 4592 } 4593 } 4594 } 4595 if (mSnapScrollMode != SNAP_NONE) { 4596 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 4597 deltaY = 0; 4598 } else { 4599 deltaX = 0; 4600 } 4601 } 4602 if ((deltaX | deltaY) != 0) { 4603 scrollBy(deltaX, deltaY); 4604 if (deltaX != 0) { 4605 mLastTouchX = x; 4606 } 4607 if (deltaY != 0) { 4608 mLastTouchY = y; 4609 } 4610 mHeldMotionless = MOTIONLESS_FALSE; 4611 } else { 4612 // keep the scrollbar on the screen even there is no 4613 // scroll 4614 keepScrollBarsVisible = true; 4615 } 4616 mLastTouchTime = eventTime; 4617 mUserScroll = true; 4618 } 4619 4620 if (!getSettings().getBuiltInZoomControls()) { 4621 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 4622 if (mZoomControls != null && showPlusMinus) { 4623 if (mZoomControls.getVisibility() == View.VISIBLE) { 4624 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4625 } else { 4626 mZoomControls.show(showPlusMinus, false); 4627 } 4628 mPrivateHandler.postDelayed(mZoomControlRunnable, 4629 ZOOM_CONTROLS_TIMEOUT); 4630 } 4631 } 4632 4633 if (mDragTrackerHandler != null) { 4634 mDragTrackerHandler.dragTo(x, y); 4635 } 4636 4637 if (keepScrollBarsVisible) { 4638 if (mHeldMotionless != MOTIONLESS_TRUE) { 4639 mHeldMotionless = MOTIONLESS_TRUE; 4640 invalidate(); 4641 } 4642 // keep the scrollbar on the screen even there is no scroll 4643 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 4644 false); 4645 // return false to indicate that we can't pan out of the 4646 // view space 4647 return !done; 4648 } 4649 break; 4650 } 4651 case MotionEvent.ACTION_UP: { 4652 if (mDragTrackerHandler != null) { 4653 mDragTrackerHandler.stopDrag(); 4654 } 4655 mLastTouchUpTime = eventTime; 4656 switch (mTouchMode) { 4657 case TOUCH_DOUBLE_TAP_MODE: // double tap 4658 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4659 mTouchMode = TOUCH_DONE_MODE; 4660 if (mPreventDoubleTap) { 4661 WebViewCore.TouchEventData ted 4662 = new WebViewCore.TouchEventData(); 4663 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 4664 ted.mX = viewToContentX((int) x + mScrollX); 4665 ted.mY = viewToContentY((int) y + mScrollY); 4666 ted.mEventTime = eventTime; 4667 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4668 } else if (mFullScreenHolder == null) { 4669 doDoubleTap(); 4670 } 4671 break; 4672 case TOUCH_SELECT_MODE: 4673 commitCopy(); 4674 mTouchSelection = false; 4675 break; 4676 case TOUCH_INIT_MODE: // tap 4677 case TOUCH_SHORTPRESS_START_MODE: 4678 case TOUCH_SHORTPRESS_MODE: 4679 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4680 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4681 if ((deltaX * deltaX + deltaY * deltaY) > mTouchSlopSquare) { 4682 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 4683 " WebCore's response for touch down."); 4684 if (mFullScreenHolder == null 4685 && (computeHorizontalScrollExtent() < computeHorizontalScrollRange() 4686 || computeVerticalScrollExtent() < computeVerticalScrollRange())) { 4687 // we will not rewrite drag code here, but we 4688 // will try fling if it applies. 4689 WebViewCore.reducePriority(); 4690 // fall through to TOUCH_DRAG_MODE 4691 } else { 4692 break; 4693 } 4694 } else { 4695 // mPreventDrag can be PREVENT_DRAG_MAYBE_YES in 4696 // TOUCH_INIT_MODE. To give WebCoreThread a little 4697 // more time to send PREVENT_TOUCH_ID, we check 4698 // again in responding RELEASE_SINGLE_TAP. 4699 if (mPreventDrag != PREVENT_DRAG_YES) { 4700 if (mTouchMode == TOUCH_INIT_MODE) { 4701 mPrivateHandler.sendMessageDelayed( 4702 mPrivateHandler.obtainMessage( 4703 RELEASE_SINGLE_TAP), 4704 ViewConfiguration.getDoubleTapTimeout()); 4705 } else { 4706 mTouchMode = TOUCH_DONE_MODE; 4707 doShortPress(); 4708 } 4709 } 4710 break; 4711 } 4712 case TOUCH_DRAG_MODE: 4713 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4714 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4715 mHeldMotionless = MOTIONLESS_TRUE; 4716 // redraw in high-quality, as we're done dragging 4717 invalidate(); 4718 // if the user waits a while w/o moving before the 4719 // up, we don't want to do a fling 4720 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4721 mVelocityTracker.addMovement(ev); 4722 doFling(); 4723 break; 4724 } 4725 mLastVelocity = 0; 4726 WebViewCore.resumePriority(); 4727 break; 4728 case TOUCH_DRAG_START_MODE: 4729 case TOUCH_DONE_MODE: 4730 // do nothing 4731 break; 4732 } 4733 // we also use mVelocityTracker == null to tell us that we are 4734 // not "moving around", so we can take the slower/prettier 4735 // mode in the drawing code 4736 if (mVelocityTracker != null) { 4737 mVelocityTracker.recycle(); 4738 mVelocityTracker = null; 4739 } 4740 break; 4741 } 4742 case MotionEvent.ACTION_CANCEL: { 4743 cancelTouch(); 4744 break; 4745 } 4746 } 4747 return true; 4748 } 4749 4750 private void startTouch(float x, float y, long eventTime) { 4751 // Remember where the motion event started 4752 mLastTouchX = x; 4753 mLastTouchY = y; 4754 mLastTouchTime = eventTime; 4755 mVelocityTracker = VelocityTracker.obtain(); 4756 mSnapScrollMode = SNAP_NONE; 4757 if (mDragTracker != null) { 4758 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 4759 } 4760 } 4761 4762 private void cancelTouch() { 4763 if (mDragTrackerHandler != null) { 4764 mDragTrackerHandler.stopDrag(); 4765 } 4766 // we also use mVelocityTracker == null to tell us that we are 4767 // not "moving around", so we can take the slower/prettier 4768 // mode in the drawing code 4769 if (mVelocityTracker != null) { 4770 mVelocityTracker.recycle(); 4771 mVelocityTracker = null; 4772 } 4773 if (mTouchMode == TOUCH_DRAG_MODE) { 4774 WebViewCore.resumePriority(); 4775 } 4776 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4777 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4778 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4779 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4780 mHeldMotionless = MOTIONLESS_TRUE; 4781 mTouchMode = TOUCH_DONE_MODE; 4782 nativeHideCursor(); 4783 } 4784 4785 private long mTrackballFirstTime = 0; 4786 private long mTrackballLastTime = 0; 4787 private float mTrackballRemainsX = 0.0f; 4788 private float mTrackballRemainsY = 0.0f; 4789 private int mTrackballXMove = 0; 4790 private int mTrackballYMove = 0; 4791 private boolean mExtendSelection = false; 4792 private boolean mTouchSelection = false; 4793 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4794 private static final int TRACKBALL_TIMEOUT = 200; 4795 private static final int TRACKBALL_WAIT = 100; 4796 private static final int TRACKBALL_SCALE = 400; 4797 private static final int TRACKBALL_SCROLL_COUNT = 5; 4798 private static final int TRACKBALL_MOVE_COUNT = 10; 4799 private static final int TRACKBALL_MULTIPLIER = 3; 4800 private static final int SELECT_CURSOR_OFFSET = 16; 4801 private int mSelectX = 0; 4802 private int mSelectY = 0; 4803 private boolean mFocusSizeChanged = false; 4804 private boolean mShiftIsPressed = false; 4805 private boolean mTrackballDown = false; 4806 private long mTrackballUpTime = 0; 4807 private long mLastCursorTime = 0; 4808 private Rect mLastCursorBounds; 4809 4810 // Set by default; BrowserActivity clears to interpret trackball data 4811 // directly for movement. Currently, the framework only passes 4812 // arrow key events, not trackball events, from one child to the next 4813 private boolean mMapTrackballToArrowKeys = true; 4814 4815 public void setMapTrackballToArrowKeys(boolean setMap) { 4816 mMapTrackballToArrowKeys = setMap; 4817 } 4818 4819 void resetTrackballTime() { 4820 mTrackballLastTime = 0; 4821 } 4822 4823 @Override 4824 public boolean onTrackballEvent(MotionEvent ev) { 4825 long time = ev.getEventTime(); 4826 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4827 if (ev.getY() > 0) pageDown(true); 4828 if (ev.getY() < 0) pageUp(true); 4829 return true; 4830 } 4831 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4832 if (mShiftIsPressed) { 4833 return true; // discard press if copy in progress 4834 } 4835 mTrackballDown = true; 4836 if (mNativeClass == 0) { 4837 return false; 4838 } 4839 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4840 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4841 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4842 nativeSelectBestAt(mLastCursorBounds); 4843 } 4844 if (DebugFlags.WEB_VIEW) { 4845 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4846 + " time=" + time 4847 + " mLastCursorTime=" + mLastCursorTime); 4848 } 4849 if (isInTouchMode()) requestFocusFromTouch(); 4850 return false; // let common code in onKeyDown at it 4851 } 4852 if (ev.getAction() == MotionEvent.ACTION_UP) { 4853 // LONG_PRESS_CENTER is set in common onKeyDown 4854 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4855 mTrackballDown = false; 4856 mTrackballUpTime = time; 4857 if (mShiftIsPressed) { 4858 if (mExtendSelection) { 4859 commitCopy(); 4860 } else { 4861 mExtendSelection = true; 4862 invalidate(); // draw the i-beam instead of the arrow 4863 } 4864 return true; // discard press if copy in progress 4865 } 4866 if (DebugFlags.WEB_VIEW) { 4867 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4868 + " time=" + time 4869 ); 4870 } 4871 return false; // let common code in onKeyUp at it 4872 } 4873 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4874 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4875 return false; 4876 } 4877 if (mTrackballDown) { 4878 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4879 return true; // discard move if trackball is down 4880 } 4881 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4882 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4883 return true; 4884 } 4885 // TODO: alternatively we can do panning as touch does 4886 switchOutDrawHistory(); 4887 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4888 if (DebugFlags.WEB_VIEW) { 4889 Log.v(LOGTAG, "onTrackballEvent time=" 4890 + time + " last=" + mTrackballLastTime); 4891 } 4892 mTrackballFirstTime = time; 4893 mTrackballXMove = mTrackballYMove = 0; 4894 } 4895 mTrackballLastTime = time; 4896 if (DebugFlags.WEB_VIEW) { 4897 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4898 } 4899 mTrackballRemainsX += ev.getX(); 4900 mTrackballRemainsY += ev.getY(); 4901 doTrackball(time); 4902 return true; 4903 } 4904 4905 void moveSelection(float xRate, float yRate) { 4906 if (mNativeClass == 0) 4907 return; 4908 int width = getViewWidth(); 4909 int height = getViewHeight(); 4910 mSelectX += xRate; 4911 mSelectY += yRate; 4912 int maxX = width + mScrollX; 4913 int maxY = height + mScrollY; 4914 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 4915 , mSelectX)); 4916 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 4917 , mSelectY)); 4918 if (DebugFlags.WEB_VIEW) { 4919 Log.v(LOGTAG, "moveSelection" 4920 + " mSelectX=" + mSelectX 4921 + " mSelectY=" + mSelectY 4922 + " mScrollX=" + mScrollX 4923 + " mScrollY=" + mScrollY 4924 + " xRate=" + xRate 4925 + " yRate=" + yRate 4926 ); 4927 } 4928 nativeMoveSelection(viewToContentX(mSelectX), 4929 viewToContentY(mSelectY), mExtendSelection); 4930 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 4931 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4932 : 0; 4933 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 4934 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4935 : 0; 4936 pinScrollBy(scrollX, scrollY, true, 0); 4937 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 4938 requestRectangleOnScreen(select); 4939 invalidate(); 4940 } 4941 4942 private int scaleTrackballX(float xRate, int width) { 4943 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4944 int nextXMove = xMove; 4945 if (xMove > 0) { 4946 if (xMove > mTrackballXMove) { 4947 xMove -= mTrackballXMove; 4948 } 4949 } else if (xMove < mTrackballXMove) { 4950 xMove -= mTrackballXMove; 4951 } 4952 mTrackballXMove = nextXMove; 4953 return xMove; 4954 } 4955 4956 private int scaleTrackballY(float yRate, int height) { 4957 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 4958 int nextYMove = yMove; 4959 if (yMove > 0) { 4960 if (yMove > mTrackballYMove) { 4961 yMove -= mTrackballYMove; 4962 } 4963 } else if (yMove < mTrackballYMove) { 4964 yMove -= mTrackballYMove; 4965 } 4966 mTrackballYMove = nextYMove; 4967 return yMove; 4968 } 4969 4970 private int keyCodeToSoundsEffect(int keyCode) { 4971 switch(keyCode) { 4972 case KeyEvent.KEYCODE_DPAD_UP: 4973 return SoundEffectConstants.NAVIGATION_UP; 4974 case KeyEvent.KEYCODE_DPAD_RIGHT: 4975 return SoundEffectConstants.NAVIGATION_RIGHT; 4976 case KeyEvent.KEYCODE_DPAD_DOWN: 4977 return SoundEffectConstants.NAVIGATION_DOWN; 4978 case KeyEvent.KEYCODE_DPAD_LEFT: 4979 return SoundEffectConstants.NAVIGATION_LEFT; 4980 } 4981 throw new IllegalArgumentException("keyCode must be one of " + 4982 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 4983 "KEYCODE_DPAD_LEFT}."); 4984 } 4985 4986 private void doTrackball(long time) { 4987 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 4988 if (elapsed == 0) { 4989 elapsed = TRACKBALL_TIMEOUT; 4990 } 4991 float xRate = mTrackballRemainsX * 1000 / elapsed; 4992 float yRate = mTrackballRemainsY * 1000 / elapsed; 4993 int viewWidth = getViewWidth(); 4994 int viewHeight = getViewHeight(); 4995 if (mShiftIsPressed) { 4996 moveSelection(scaleTrackballX(xRate, viewWidth), 4997 scaleTrackballY(yRate, viewHeight)); 4998 mTrackballRemainsX = mTrackballRemainsY = 0; 4999 return; 5000 } 5001 float ax = Math.abs(xRate); 5002 float ay = Math.abs(yRate); 5003 float maxA = Math.max(ax, ay); 5004 if (DebugFlags.WEB_VIEW) { 5005 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5006 + " xRate=" + xRate 5007 + " yRate=" + yRate 5008 + " mTrackballRemainsX=" + mTrackballRemainsX 5009 + " mTrackballRemainsY=" + mTrackballRemainsY); 5010 } 5011 int width = mContentWidth - viewWidth; 5012 int height = mContentHeight - viewHeight; 5013 if (width < 0) width = 0; 5014 if (height < 0) height = 0; 5015 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5016 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5017 maxA = Math.max(ax, ay); 5018 int count = Math.max(0, (int) maxA); 5019 int oldScrollX = mScrollX; 5020 int oldScrollY = mScrollY; 5021 if (count > 0) { 5022 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5023 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5024 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5025 KeyEvent.KEYCODE_DPAD_RIGHT; 5026 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5027 if (DebugFlags.WEB_VIEW) { 5028 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5029 + " count=" + count 5030 + " mTrackballRemainsX=" + mTrackballRemainsX 5031 + " mTrackballRemainsY=" + mTrackballRemainsY); 5032 } 5033 if (navHandledKey(selectKeyCode, count, false, time, false)) { 5034 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5035 } 5036 mTrackballRemainsX = mTrackballRemainsY = 0; 5037 } 5038 if (count >= TRACKBALL_SCROLL_COUNT) { 5039 int xMove = scaleTrackballX(xRate, width); 5040 int yMove = scaleTrackballY(yRate, height); 5041 if (DebugFlags.WEB_VIEW) { 5042 Log.v(LOGTAG, "doTrackball pinScrollBy" 5043 + " count=" + count 5044 + " xMove=" + xMove + " yMove=" + yMove 5045 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5046 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5047 ); 5048 } 5049 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5050 xMove = 0; 5051 } 5052 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5053 yMove = 0; 5054 } 5055 if (xMove != 0 || yMove != 0) { 5056 pinScrollBy(xMove, yMove, true, 0); 5057 } 5058 mUserScroll = true; 5059 } 5060 } 5061 5062 private int computeMaxScrollY() { 5063 int maxContentH = computeVerticalScrollRange() + getTitleHeight(); 5064 return Math.max(maxContentH - getViewHeightWithTitle(), getTitleHeight()); 5065 } 5066 5067 public void flingScroll(int vx, int vy) { 5068 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5069 int maxY = computeMaxScrollY(); 5070 5071 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 5072 invalidate(); 5073 } 5074 5075 private void doFling() { 5076 if (mVelocityTracker == null) { 5077 return; 5078 } 5079 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5080 int maxY = computeMaxScrollY(); 5081 5082 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5083 int vx = (int) mVelocityTracker.getXVelocity(); 5084 int vy = (int) mVelocityTracker.getYVelocity(); 5085 5086 if (mSnapScrollMode != SNAP_NONE) { 5087 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5088 vy = 0; 5089 } else { 5090 vx = 0; 5091 } 5092 } 5093 5094 if (true /* EMG release: make our fling more like Maps' */) { 5095 // maps cuts their velocity in half 5096 vx = vx * 3 / 4; 5097 vy = vy * 3 / 4; 5098 } 5099 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5100 WebViewCore.resumePriority(); 5101 return; 5102 } 5103 float currentVelocity = mScroller.getCurrVelocity(); 5104 if (mLastVelocity > 0 && currentVelocity > 0) { 5105 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5106 - Math.atan2(vy, vx))); 5107 final float circle = (float) (Math.PI) * 2.0f; 5108 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5109 vx += currentVelocity * mLastVelX / mLastVelocity; 5110 vy += currentVelocity * mLastVelY / mLastVelocity; 5111 if (DebugFlags.WEB_VIEW) { 5112 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5113 } 5114 } else if (DebugFlags.WEB_VIEW) { 5115 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5116 } 5117 } else if (DebugFlags.WEB_VIEW) { 5118 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5119 + " current=" + currentVelocity 5120 + " vx=" + vx + " vy=" + vy 5121 + " maxX=" + maxX + " maxY=" + maxY 5122 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5123 } 5124 mLastVelX = vx; 5125 mLastVelY = vy; 5126 mLastVelocity = (float) Math.hypot(vx, vy); 5127 5128 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 5129 // TODO: duration is calculated based on velocity, if the range is 5130 // small, the animation will stop before duration is up. We may 5131 // want to calculate how long the animation is going to run to precisely 5132 // resume the webcore update. 5133 final int time = mScroller.getDuration(); 5134 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5135 awakenScrollBars(time); 5136 invalidate(); 5137 } 5138 5139 private boolean zoomWithPreview(float scale) { 5140 float oldScale = mActualScale; 5141 mInitialScrollX = mScrollX; 5142 mInitialScrollY = mScrollY; 5143 5144 // snap to DEFAULT_SCALE if it is close 5145 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 5146 scale = mDefaultScale; 5147 } 5148 5149 setNewZoomScale(scale, true, false); 5150 5151 if (oldScale != mActualScale) { 5152 // use mZoomPickerScale to see zoom preview first 5153 mZoomStart = SystemClock.uptimeMillis(); 5154 mInvInitialZoomScale = 1.0f / oldScale; 5155 mInvFinalZoomScale = 1.0f / mActualScale; 5156 mZoomScale = mActualScale; 5157 WebViewCore.pauseUpdatePicture(mWebViewCore); 5158 invalidate(); 5159 return true; 5160 } else { 5161 return false; 5162 } 5163 } 5164 5165 /** 5166 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5167 * in charge of installing this view to the view hierarchy. This view will 5168 * become visible when the user starts scrolling via touch and fade away if 5169 * the user does not interact with it. 5170 * <p/> 5171 * API version 3 introduces a built-in zoom mechanism that is shown 5172 * automatically by the MapView. This is the preferred approach for 5173 * showing the zoom UI. 5174 * 5175 * @deprecated The built-in zoom mechanism is preferred, see 5176 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5177 */ 5178 @Deprecated 5179 public View getZoomControls() { 5180 if (!getSettings().supportZoom()) { 5181 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5182 return null; 5183 } 5184 if (mZoomControls == null) { 5185 mZoomControls = createZoomControls(); 5186 5187 /* 5188 * need to be set to VISIBLE first so that getMeasuredHeight() in 5189 * {@link #onSizeChanged()} can return the measured value for proper 5190 * layout. 5191 */ 5192 mZoomControls.setVisibility(View.VISIBLE); 5193 mZoomControlRunnable = new Runnable() { 5194 public void run() { 5195 5196 /* Don't dismiss the controls if the user has 5197 * focus on them. Wait and check again later. 5198 */ 5199 if (!mZoomControls.hasFocus()) { 5200 mZoomControls.hide(); 5201 } else { 5202 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5203 mPrivateHandler.postDelayed(mZoomControlRunnable, 5204 ZOOM_CONTROLS_TIMEOUT); 5205 } 5206 } 5207 }; 5208 } 5209 return mZoomControls; 5210 } 5211 5212 private ExtendedZoomControls createZoomControls() { 5213 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 5214 , null); 5215 zoomControls.setOnZoomInClickListener(new OnClickListener() { 5216 public void onClick(View v) { 5217 // reset time out 5218 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5219 mPrivateHandler.postDelayed(mZoomControlRunnable, 5220 ZOOM_CONTROLS_TIMEOUT); 5221 zoomIn(); 5222 } 5223 }); 5224 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 5225 public void onClick(View v) { 5226 // reset time out 5227 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5228 mPrivateHandler.postDelayed(mZoomControlRunnable, 5229 ZOOM_CONTROLS_TIMEOUT); 5230 zoomOut(); 5231 } 5232 }); 5233 return zoomControls; 5234 } 5235 5236 /** 5237 * Gets the {@link ZoomButtonsController} which can be used to add 5238 * additional buttons to the zoom controls window. 5239 * 5240 * @return The instance of {@link ZoomButtonsController} used by this class, 5241 * or null if it is unavailable. 5242 * @hide 5243 */ 5244 public ZoomButtonsController getZoomButtonsController() { 5245 return mZoomButtonsController; 5246 } 5247 5248 /** 5249 * Perform zoom in in the webview 5250 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 5251 */ 5252 public boolean zoomIn() { 5253 // TODO: alternatively we can disallow this during draw history mode 5254 switchOutDrawHistory(); 5255 mInZoomOverview = false; 5256 // Center zooming to the center of the screen. 5257 mZoomCenterX = getViewWidth() * .5f; 5258 mZoomCenterY = getViewHeight() * .5f; 5259 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5260 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5261 return zoomWithPreview(mActualScale * 1.25f); 5262 } 5263 5264 /** 5265 * Perform zoom out in the webview 5266 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 5267 */ 5268 public boolean zoomOut() { 5269 // TODO: alternatively we can disallow this during draw history mode 5270 switchOutDrawHistory(); 5271 // Center zooming to the center of the screen. 5272 mZoomCenterX = getViewWidth() * .5f; 5273 mZoomCenterY = getViewHeight() * .5f; 5274 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5275 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5276 return zoomWithPreview(mActualScale * 0.8f); 5277 } 5278 5279 private void updateSelection() { 5280 if (mNativeClass == 0) { 5281 return; 5282 } 5283 // mLastTouchX and mLastTouchY are the point in the current viewport 5284 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5285 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5286 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 5287 contentX + mNavSlop, contentY + mNavSlop); 5288 nativeSelectBestAt(rect); 5289 } 5290 5291 /** 5292 * Scroll the focused text field/area to match the WebTextView 5293 * @param xPercent New x position of the WebTextView from 0 to 1. 5294 * @param y New y position of the WebTextView in view coordinates 5295 */ 5296 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 5297 if (!inEditingMode() || mWebViewCore == null) { 5298 return; 5299 } 5300 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 5301 // Since this position is relative to the top of the text input 5302 // field, we do not need to take the title bar's height into 5303 // consideration. 5304 viewToContentDimension(y), 5305 new Float(xPercent)); 5306 } 5307 5308 /** 5309 * Set our starting point and time for a drag from the WebTextView. 5310 */ 5311 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 5312 if (!inEditingMode()) { 5313 return; 5314 } 5315 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 5316 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 5317 mLastTouchTime = eventTime; 5318 if (!mScroller.isFinished()) { 5319 abortAnimation(); 5320 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5321 } 5322 mSnapScrollMode = SNAP_NONE; 5323 mVelocityTracker = VelocityTracker.obtain(); 5324 mTouchMode = TOUCH_DRAG_START_MODE; 5325 } 5326 5327 /** 5328 * Given a motion event from the WebTextView, set its location to our 5329 * coordinates, and handle the event. 5330 */ 5331 /*package*/ boolean textFieldDrag(MotionEvent event) { 5332 if (!inEditingMode()) { 5333 return false; 5334 } 5335 mDragFromTextInput = true; 5336 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 5337 (float) (mWebTextView.getTop() - mScrollY)); 5338 boolean result = onTouchEvent(event); 5339 mDragFromTextInput = false; 5340 return result; 5341 } 5342 5343 /** 5344 * Due a touch up from a WebTextView. This will be handled by webkit to 5345 * change the selection. 5346 * @param event MotionEvent in the WebTextView's coordinates. 5347 */ 5348 /*package*/ void touchUpOnTextField(MotionEvent event) { 5349 if (!inEditingMode()) { 5350 return; 5351 } 5352 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 5353 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 5354 nativeMotionUp(x, y, mNavSlop); 5355 } 5356 5357 /** 5358 * Called when pressing the center key or trackball on a textfield. 5359 */ 5360 /*package*/ void centerKeyPressOnTextField() { 5361 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 5362 nativeCursorNodePointer()); 5363 } 5364 5365 private void doShortPress() { 5366 if (mNativeClass == 0) { 5367 return; 5368 } 5369 switchOutDrawHistory(); 5370 // mLastTouchX and mLastTouchY are the point in the current viewport 5371 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5372 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5373 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 5374 WebViewCore.MotionUpData motionUpData = new WebViewCore 5375 .MotionUpData(); 5376 motionUpData.mFrame = nativeCacheHitFramePointer(); 5377 motionUpData.mNode = nativeCacheHitNodePointer(); 5378 motionUpData.mBounds = nativeCacheHitNodeBounds(); 5379 motionUpData.mX = contentX; 5380 motionUpData.mY = contentY; 5381 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 5382 motionUpData); 5383 } else { 5384 doMotionUp(contentX, contentY); 5385 } 5386 } 5387 5388 private void doMotionUp(int contentX, int contentY) { 5389 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 5390 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 5391 } 5392 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 5393 playSoundEffect(SoundEffectConstants.CLICK); 5394 } 5395 } 5396 5397 // Rule for double tap: 5398 // 1. if the current scale is not same as the text wrap scale and layout 5399 // algorithm is NARROW_COLUMNS, fit to column; 5400 // 2. if the current state is not overview mode, change to overview mode; 5401 // 3. if the current state is overview mode, change to default scale. 5402 private void doDoubleTap() { 5403 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 5404 return; 5405 } 5406 mZoomCenterX = mLastTouchX; 5407 mZoomCenterY = mLastTouchY; 5408 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5409 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5410 WebSettings settings = getSettings(); 5411 // remove the zoom control after double tap 5412 if (settings.getBuiltInZoomControls()) { 5413 if (mZoomButtonsController.isVisible()) { 5414 mZoomButtonsController.setVisible(false); 5415 } 5416 } else { 5417 if (mZoomControlRunnable != null) { 5418 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5419 } 5420 if (mZoomControls != null) { 5421 mZoomControls.hide(); 5422 } 5423 } 5424 settings.setDoubleTapToastCount(0); 5425 boolean zoomToDefault = false; 5426 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 5427 && (Math.abs(mActualScale - mTextWrapScale) >= 0.01f)) { 5428 setNewZoomScale(mActualScale, true, true); 5429 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 5430 if (Math.abs(mActualScale - overviewScale) < 0.01f) { 5431 mInZoomOverview = true; 5432 } 5433 } else if (!mInZoomOverview) { 5434 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 5435 if (Math.abs(mActualScale - newScale) >= 0.01f) { 5436 mInZoomOverview = true; 5437 // Force the titlebar fully reveal in overview mode 5438 if (mScrollY < getTitleHeight()) mScrollY = 0; 5439 zoomWithPreview(newScale); 5440 } else if (Math.abs(mActualScale - mDefaultScale) >= 0.01f) { 5441 zoomToDefault = true; 5442 } 5443 } else { 5444 zoomToDefault = true; 5445 } 5446 if (zoomToDefault) { 5447 mInZoomOverview = false; 5448 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 5449 if (left != NO_LEFTEDGE) { 5450 // add a 5pt padding to the left edge. 5451 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 5452 - mScrollX; 5453 // Re-calculate the zoom center so that the new scroll x will be 5454 // on the left edge. 5455 if (viewLeft > 0) { 5456 mZoomCenterX = viewLeft * mDefaultScale 5457 / (mDefaultScale - mActualScale); 5458 } else { 5459 scrollBy(viewLeft, 0); 5460 mZoomCenterX = 0; 5461 } 5462 } 5463 zoomWithPreview(mDefaultScale); 5464 } 5465 } 5466 5467 // Called by JNI to handle a touch on a node representing an email address, 5468 // address, or phone number 5469 private void overrideLoading(String url) { 5470 mCallbackProxy.uiOverrideUrlLoading(url); 5471 } 5472 5473 @Override 5474 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 5475 boolean result = false; 5476 if (inEditingMode()) { 5477 result = mWebTextView.requestFocus(direction, 5478 previouslyFocusedRect); 5479 } else { 5480 result = super.requestFocus(direction, previouslyFocusedRect); 5481 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 5482 // For cases such as GMail, where we gain focus from a direction, 5483 // we want to move to the first available link. 5484 // FIXME: If there are no visible links, we may not want to 5485 int fakeKeyDirection = 0; 5486 switch(direction) { 5487 case View.FOCUS_UP: 5488 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 5489 break; 5490 case View.FOCUS_DOWN: 5491 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 5492 break; 5493 case View.FOCUS_LEFT: 5494 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 5495 break; 5496 case View.FOCUS_RIGHT: 5497 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 5498 break; 5499 default: 5500 return result; 5501 } 5502 if (mNativeClass != 0 && !nativeHasCursorNode()) { 5503 navHandledKey(fakeKeyDirection, 1, true, 0, true); 5504 } 5505 } 5506 } 5507 return result; 5508 } 5509 5510 @Override 5511 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5512 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 5513 5514 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5515 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5516 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5517 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5518 5519 int measuredHeight = heightSize; 5520 int measuredWidth = widthSize; 5521 5522 // Grab the content size from WebViewCore. 5523 int contentHeight = contentToViewDimension(mContentHeight); 5524 int contentWidth = contentToViewDimension(mContentWidth); 5525 5526// Log.d(LOGTAG, "------- measure " + heightMode); 5527 5528 if (heightMode != MeasureSpec.EXACTLY) { 5529 mHeightCanMeasure = true; 5530 measuredHeight = contentHeight; 5531 if (heightMode == MeasureSpec.AT_MOST) { 5532 // If we are larger than the AT_MOST height, then our height can 5533 // no longer be measured and we should scroll internally. 5534 if (measuredHeight > heightSize) { 5535 measuredHeight = heightSize; 5536 mHeightCanMeasure = false; 5537 } 5538 } 5539 } else { 5540 mHeightCanMeasure = false; 5541 } 5542 if (mNativeClass != 0) { 5543 nativeSetHeightCanMeasure(mHeightCanMeasure); 5544 } 5545 // For the width, always use the given size unless unspecified. 5546 if (widthMode == MeasureSpec.UNSPECIFIED) { 5547 mWidthCanMeasure = true; 5548 measuredWidth = contentWidth; 5549 } else { 5550 mWidthCanMeasure = false; 5551 } 5552 5553 synchronized (this) { 5554 setMeasuredDimension(measuredWidth, measuredHeight); 5555 } 5556 } 5557 5558 @Override 5559 public boolean requestChildRectangleOnScreen(View child, 5560 Rect rect, 5561 boolean immediate) { 5562 rect.offset(child.getLeft() - child.getScrollX(), 5563 child.getTop() - child.getScrollY()); 5564 5565 int height = getViewHeightWithTitle(); 5566 int screenTop = mScrollY; 5567 int screenBottom = screenTop + height; 5568 5569 int scrollYDelta = 0; 5570 5571 if (rect.bottom > screenBottom) { 5572 int oneThirdOfScreenHeight = height / 3; 5573 if (rect.height() > 2 * oneThirdOfScreenHeight) { 5574 // If the rectangle is too tall to fit in the bottom two thirds 5575 // of the screen, place it at the top. 5576 scrollYDelta = rect.top - screenTop; 5577 } else { 5578 // If the rectangle will still fit on screen, we want its 5579 // top to be in the top third of the screen. 5580 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 5581 } 5582 } else if (rect.top < screenTop) { 5583 scrollYDelta = rect.top - screenTop; 5584 } 5585 5586 int width = getWidth() - getVerticalScrollbarWidth(); 5587 int screenLeft = mScrollX; 5588 int screenRight = screenLeft + width; 5589 5590 int scrollXDelta = 0; 5591 5592 if (rect.right > screenRight && rect.left > screenLeft) { 5593 if (rect.width() > width) { 5594 scrollXDelta += (rect.left - screenLeft); 5595 } else { 5596 scrollXDelta += (rect.right - screenRight); 5597 } 5598 } else if (rect.left < screenLeft) { 5599 scrollXDelta -= (screenLeft - rect.left); 5600 } 5601 5602 if ((scrollYDelta | scrollXDelta) != 0) { 5603 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 5604 } 5605 5606 return false; 5607 } 5608 5609 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 5610 String replace, int newStart, int newEnd) { 5611 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 5612 arg.mReplace = replace; 5613 arg.mNewStart = newStart; 5614 arg.mNewEnd = newEnd; 5615 mTextGeneration++; 5616 arg.mTextGeneration = mTextGeneration; 5617 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 5618 } 5619 5620 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 5621 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 5622 arg.mEvent = event; 5623 arg.mCurrentText = currentText; 5624 // Increase our text generation number, and pass it to webcore thread 5625 mTextGeneration++; 5626 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 5627 // WebKit's document state is not saved until about to leave the page. 5628 // To make sure the host application, like Browser, has the up to date 5629 // document state when it goes to background, we force to save the 5630 // document state. 5631 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 5632 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 5633 cursorData(), 1000); 5634 } 5635 5636 /* package */ WebViewCore getWebViewCore() { 5637 return mWebViewCore; 5638 } 5639 5640 //------------------------------------------------------------------------- 5641 // Methods can be called from a separate thread, like WebViewCore 5642 // If it needs to call the View system, it has to send message. 5643 //------------------------------------------------------------------------- 5644 5645 /** 5646 * General handler to receive message coming from webkit thread 5647 */ 5648 class PrivateHandler extends Handler { 5649 @Override 5650 public void handleMessage(Message msg) { 5651 // exclude INVAL_RECT_MSG_ID since it is frequently output 5652 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 5653 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 5654 > FIND_AGAIN ? Integer.toString(msg.what) 5655 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 5656 } 5657 if (mWebViewCore == null) { 5658 // after WebView's destroy() is called, skip handling messages. 5659 return; 5660 } 5661 switch (msg.what) { 5662 case REMEMBER_PASSWORD: { 5663 mDatabase.setUsernamePassword( 5664 msg.getData().getString("host"), 5665 msg.getData().getString("username"), 5666 msg.getData().getString("password")); 5667 ((Message) msg.obj).sendToTarget(); 5668 break; 5669 } 5670 case NEVER_REMEMBER_PASSWORD: { 5671 mDatabase.setUsernamePassword( 5672 msg.getData().getString("host"), null, null); 5673 ((Message) msg.obj).sendToTarget(); 5674 break; 5675 } 5676 case SWITCH_TO_SHORTPRESS: { 5677 // if mPreventDrag is not confirmed, treat it as no so that 5678 // it won't block panning the page. 5679 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5680 mPreventDrag = PREVENT_DRAG_NO; 5681 mPreventLongPress = false; 5682 mPreventDoubleTap = false; 5683 } 5684 if (mTouchMode == TOUCH_INIT_MODE) { 5685 mTouchMode = mFullScreenHolder == null 5686 ? TOUCH_SHORTPRESS_START_MODE 5687 : TOUCH_SHORTPRESS_MODE; 5688 updateSelection(); 5689 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5690 mTouchMode = TOUCH_DONE_MODE; 5691 } 5692 break; 5693 } 5694 case SWITCH_TO_LONGPRESS: { 5695 if (mPreventLongPress) { 5696 mTouchMode = TOUCH_DONE_MODE; 5697 WebViewCore.TouchEventData ted 5698 = new WebViewCore.TouchEventData(); 5699 ted.mAction = WebViewCore.ACTION_LONGPRESS; 5700 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 5701 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 5702 ted.mEventTime = SystemClock.uptimeMillis(); 5703 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5704 } else if (mPreventDrag == PREVENT_DRAG_NO) { 5705 mTouchMode = TOUCH_DONE_MODE; 5706 if (mFullScreenHolder == null) { 5707 performLongClick(); 5708 rebuildWebTextView(); 5709 } 5710 } 5711 break; 5712 } 5713 case RELEASE_SINGLE_TAP: { 5714 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5715 // if mPreventDrag is not confirmed, treat it as 5716 // no so that it won't block tap. 5717 mPreventDrag = PREVENT_DRAG_NO; 5718 mPreventLongPress = false; 5719 mPreventDoubleTap = false; 5720 } 5721 if (mPreventDrag == PREVENT_DRAG_NO) { 5722 mTouchMode = TOUCH_DONE_MODE; 5723 doShortPress(); 5724 } 5725 break; 5726 } 5727 case SCROLL_BY_MSG_ID: 5728 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 5729 break; 5730 case SYNC_SCROLL_TO_MSG_ID: 5731 if (mUserScroll) { 5732 // if user has scrolled explicitly, don't sync the 5733 // scroll position any more 5734 mUserScroll = false; 5735 break; 5736 } 5737 // fall through 5738 case SCROLL_TO_MSG_ID: 5739 if (setContentScrollTo(msg.arg1, msg.arg2)) { 5740 // if we can't scroll to the exact position due to pin, 5741 // send a message to WebCore to re-scroll when we get a 5742 // new picture 5743 mUserScroll = false; 5744 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 5745 msg.arg1, msg.arg2); 5746 } 5747 break; 5748 case SPAWN_SCROLL_TO_MSG_ID: 5749 spawnContentScrollTo(msg.arg1, msg.arg2); 5750 break; 5751 case UPDATE_ZOOM_RANGE: { 5752 WebViewCore.RestoreState restoreState 5753 = (WebViewCore.RestoreState) msg.obj; 5754 // mScrollX contains the new minPrefWidth 5755 updateZoomRange(restoreState, getViewWidth(), 5756 restoreState.mScrollX, false); 5757 break; 5758 } 5759 case NEW_PICTURE_MSG_ID: { 5760 WebSettings settings = mWebViewCore.getSettings(); 5761 // called for new content 5762 final int viewWidth = getViewWidth(); 5763 final WebViewCore.DrawData draw = 5764 (WebViewCore.DrawData) msg.obj; 5765 final Point viewSize = draw.mViewPoint; 5766 boolean useWideViewport = settings.getUseWideViewPort(); 5767 WebViewCore.RestoreState restoreState = draw.mRestoreState; 5768 boolean hasRestoreState = restoreState != null; 5769 if (hasRestoreState) { 5770 mInZoomOverview = false; 5771 updateZoomRange(restoreState, viewSize.x, 5772 draw.mMinPrefWidth, true); 5773 if (mInitialScaleInPercent > 0) { 5774 setNewZoomScale(mInitialScaleInPercent / 100.0f, 5775 mInitialScaleInPercent != mTextWrapScale * 100, 5776 false); 5777 } else if (restoreState.mViewScale > 0) { 5778 mTextWrapScale = restoreState.mTextWrapScale; 5779 setNewZoomScale(restoreState.mViewScale, false, 5780 false); 5781 } else { 5782 mInZoomOverview = useWideViewport 5783 && settings.getLoadWithOverviewMode(); 5784 float scale; 5785 if (mInZoomOverview) { 5786 scale = (float) viewWidth 5787 / DEFAULT_VIEWPORT_WIDTH; 5788 } else { 5789 scale = restoreState.mTextWrapScale; 5790 } 5791 setNewZoomScale(scale, Math.abs(scale 5792 - mTextWrapScale) >= 0.01f, false); 5793 } 5794 setContentScrollTo(restoreState.mScrollX, 5795 restoreState.mScrollY); 5796 // As we are on a new page, remove the WebTextView. This 5797 // is necessary for page loads driven by webkit, and in 5798 // particular when the user was on a password field, so 5799 // the WebTextView was visible. 5800 clearTextEntry(); 5801 // update the zoom buttons as the scale can be changed 5802 if (getSettings().getBuiltInZoomControls()) { 5803 updateZoomButtonsEnabled(); 5804 } 5805 } 5806 // We update the layout (i.e. request a layout from the 5807 // view system) if the last view size that we sent to 5808 // WebCore matches the view size of the picture we just 5809 // received in the fixed dimension. 5810 final boolean updateLayout = viewSize.x == mLastWidthSent 5811 && viewSize.y == mLastHeightSent; 5812 recordNewContentSize(draw.mWidthHeight.x, 5813 draw.mWidthHeight.y 5814 + (mFindIsUp ? mFindHeight : 0), updateLayout); 5815 if (DebugFlags.WEB_VIEW) { 5816 Rect b = draw.mInvalRegion.getBounds(); 5817 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 5818 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 5819 } 5820 invalidateContentRect(draw.mInvalRegion.getBounds()); 5821 if (mPictureListener != null) { 5822 mPictureListener.onNewPicture(WebView.this, capturePicture()); 5823 } 5824 if (useWideViewport) { 5825 // limit mZoomOverviewWidth upper bound to 5826 // sMaxViewportWidth so that if the page doesn't behave 5827 // well, the WebView won't go insane. limit the lower 5828 // bound to match the default scale for mobile sites. 5829 mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math 5830 .max((int) (viewWidth / mDefaultScale), Math 5831 .max(draw.mMinPrefWidth, 5832 draw.mViewPoint.x))); 5833 } 5834 if (!mMinZoomScaleFixed) { 5835 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 5836 } 5837 if (!mDrawHistory && mInZoomOverview) { 5838 // fit the content width to the current view. Ignore 5839 // the rounding error case. 5840 if (Math.abs((viewWidth * mInvActualScale) 5841 - mZoomOverviewWidth) > 1) { 5842 setNewZoomScale((float) viewWidth 5843 / mZoomOverviewWidth, Math.abs(mActualScale 5844 - mTextWrapScale) < 0.01f, false); 5845 } 5846 } 5847 if (draw.mFocusSizeChanged && inEditingMode()) { 5848 mFocusSizeChanged = true; 5849 } 5850 if (hasRestoreState) { 5851 mViewManager.postReadyToDrawAll(); 5852 } 5853 break; 5854 } 5855 case WEBCORE_INITIALIZED_MSG_ID: 5856 // nativeCreate sets mNativeClass to a non-zero value 5857 nativeCreate(msg.arg1); 5858 break; 5859 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 5860 // Make sure that the textfield is currently focused 5861 // and representing the same node as the pointer. 5862 if (inEditingMode() && 5863 mWebTextView.isSameTextField(msg.arg1)) { 5864 if (msg.getData().getBoolean("password")) { 5865 Spannable text = (Spannable) mWebTextView.getText(); 5866 int start = Selection.getSelectionStart(text); 5867 int end = Selection.getSelectionEnd(text); 5868 mWebTextView.setInPassword(true); 5869 // Restore the selection, which may have been 5870 // ruined by setInPassword. 5871 Spannable pword = 5872 (Spannable) mWebTextView.getText(); 5873 Selection.setSelection(pword, start, end); 5874 // If the text entry has created more events, ignore 5875 // this one. 5876 } else if (msg.arg2 == mTextGeneration) { 5877 mWebTextView.setTextAndKeepSelection( 5878 (String) msg.obj); 5879 } 5880 } 5881 break; 5882 case UPDATE_TEXT_SELECTION_MSG_ID: 5883 if (inEditingMode() 5884 && mWebTextView.isSameTextField(msg.arg1) 5885 && msg.arg2 == mTextGeneration) { 5886 WebViewCore.TextSelectionData tData 5887 = (WebViewCore.TextSelectionData) msg.obj; 5888 mWebTextView.setSelectionFromWebKit(tData.mStart, 5889 tData.mEnd); 5890 } 5891 break; 5892 case RETURN_LABEL: 5893 if (inEditingMode() 5894 && mWebTextView.isSameTextField(msg.arg1)) { 5895 mWebTextView.setHint((String) msg.obj); 5896 InputMethodManager imm 5897 = InputMethodManager.peekInstance(); 5898 // The hint is propagated to the IME in 5899 // onCreateInputConnection. If the IME is already 5900 // active, restart it so that its hint text is updated. 5901 if (imm != null && imm.isActive(mWebTextView)) { 5902 imm.restartInput(mWebTextView); 5903 } 5904 } 5905 break; 5906 case MOVE_OUT_OF_PLUGIN: 5907 navHandledKey(msg.arg1, 1, false, 0, true); 5908 break; 5909 case UPDATE_TEXT_ENTRY_MSG_ID: 5910 // this is sent after finishing resize in WebViewCore. Make 5911 // sure the text edit box is still on the screen. 5912 if (inEditingMode() && nativeCursorIsTextInput()) { 5913 mWebTextView.bringIntoView(); 5914 rebuildWebTextView(); 5915 } 5916 break; 5917 case CLEAR_TEXT_ENTRY: 5918 clearTextEntry(); 5919 break; 5920 case INVAL_RECT_MSG_ID: { 5921 Rect r = (Rect)msg.obj; 5922 if (r == null) { 5923 invalidate(); 5924 } else { 5925 // we need to scale r from content into view coords, 5926 // which viewInvalidate() does for us 5927 viewInvalidate(r.left, r.top, r.right, r.bottom); 5928 } 5929 break; 5930 } 5931 case IMMEDIATE_REPAINT_MSG_ID: { 5932 int updates = msg.arg1; 5933 if (updates != 0) { 5934 // updates is a C++ pointer to a Vector of 5935 // AnimationValues that we apply to the layers. 5936 // The Vector is deallocated in nativeUpdateLayers(). 5937 nativeUpdateLayers(updates); 5938 } 5939 invalidate(); 5940 break; 5941 } 5942 case SET_ROOT_LAYER_MSG_ID: { 5943 int oldLayer = mRootLayer; 5944 mRootLayer = msg.arg1; 5945 if (oldLayer > 0) { 5946 nativeDestroyLayer(oldLayer); 5947 } 5948 if (mRootLayer == 0) { 5949 mLayersHaveAnimations = false; 5950 } 5951 if (mEvaluateThread != null) { 5952 mEvaluateThread.cancel(); 5953 mEvaluateThread = null; 5954 } 5955 if (nativeLayersHaveAnimations(mRootLayer)) { 5956 mLayersHaveAnimations = true; 5957 mEvaluateThread = new EvaluateLayersAnimations(); 5958 mEvaluateThread.start(); 5959 } 5960 invalidate(); 5961 break; 5962 } 5963 case REQUEST_FORM_DATA: 5964 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 5965 if (mWebTextView.isSameTextField(msg.arg1)) { 5966 mWebTextView.setAdapterCustom(adapter); 5967 } 5968 break; 5969 case RESUME_WEBCORE_PRIORITY: 5970 WebViewCore.resumePriority(); 5971 break; 5972 5973 case LONG_PRESS_CENTER: 5974 // as this is shared by keydown and trackballdown, reset all 5975 // the states 5976 mGotCenterDown = false; 5977 mTrackballDown = false; 5978 performLongClick(); 5979 break; 5980 5981 case WEBCORE_NEED_TOUCH_EVENTS: 5982 mForwardTouchEvents = (msg.arg1 != 0); 5983 break; 5984 5985 case PREVENT_TOUCH_ID: 5986 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 5987 // dont override if mPreventDrag has been set to no due 5988 // to time out 5989 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5990 mPreventDrag = (msg.arg2 & TOUCH_PREVENT_DRAG) 5991 == TOUCH_PREVENT_DRAG ? PREVENT_DRAG_YES 5992 : PREVENT_DRAG_NO; 5993 if (mPreventDrag == PREVENT_DRAG_YES) { 5994 mTouchMode = TOUCH_DONE_MODE; 5995 } else { 5996 mPreventLongPress = 5997 (msg.arg2 & TOUCH_PREVENT_LONGPRESS) 5998 == TOUCH_PREVENT_LONGPRESS; 5999 mPreventDoubleTap = 6000 (msg.arg2 & TOUCH_PREVENT_DOUBLETAP) 6001 == TOUCH_PREVENT_DOUBLETAP; 6002 } 6003 } 6004 } 6005 break; 6006 6007 case REQUEST_KEYBOARD: 6008 if (msg.arg1 == 0) { 6009 hideSoftKeyboard(); 6010 } else { 6011 displaySoftKeyboard(1 == msg.arg2); 6012 } 6013 break; 6014 6015 case FIND_AGAIN: 6016 // Ignore if find has been dismissed. 6017 if (mFindIsUp) { 6018 findAll(mLastFind); 6019 } 6020 break; 6021 6022 case DRAG_HELD_MOTIONLESS: 6023 mHeldMotionless = MOTIONLESS_TRUE; 6024 invalidate(); 6025 // fall through to keep scrollbars awake 6026 6027 case AWAKEN_SCROLL_BARS: 6028 if (mTouchMode == TOUCH_DRAG_MODE 6029 && mHeldMotionless == MOTIONLESS_TRUE) { 6030 awakenScrollBars(ViewConfiguration 6031 .getScrollDefaultDelay(), false); 6032 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6033 .obtainMessage(AWAKEN_SCROLL_BARS), 6034 ViewConfiguration.getScrollDefaultDelay()); 6035 } 6036 break; 6037 6038 case DO_MOTION_UP: 6039 doMotionUp(msg.arg1, msg.arg2); 6040 break; 6041 6042 case SHOW_FULLSCREEN: { 6043 WebViewCore.PluginFullScreenData data 6044 = (WebViewCore.PluginFullScreenData) msg.obj; 6045 if (data.mNpp != 0 && data.mView != null) { 6046 if (mFullScreenHolder != null) { 6047 Log.w(LOGTAG, 6048 "Should not have another full screen."); 6049 mFullScreenHolder.dismiss(); 6050 } 6051 mFullScreenHolder = new PluginFullScreenHolder( 6052 WebView.this, data.mNpp); 6053 // as we are sharing the View between full screen and 6054 // embedded mode, we have to remove the 6055 // AbsoluteLayout.LayoutParams set by embedded mode to 6056 // ViewGroup.LayoutParams before adding it to the dialog 6057 data.mView.setLayoutParams(new ViewGroup.LayoutParams( 6058 ViewGroup.LayoutParams.FILL_PARENT, 6059 ViewGroup.LayoutParams.FILL_PARENT)); 6060 mFullScreenHolder.setContentView(data.mView); 6061 mFullScreenHolder.setCancelable(false); 6062 mFullScreenHolder.setCanceledOnTouchOutside(false); 6063 mFullScreenHolder.show(); 6064 } else if (mFullScreenHolder == null) { 6065 // this may happen if user dismisses the fullscreen and 6066 // then the WebCore re-position message finally reached 6067 // the UI thread. 6068 break; 6069 } 6070 // move the matching embedded view fully into the view so 6071 // that touch will be valid instead of rejected due to out 6072 // of the visible bounds 6073 // TODO: do we need to preserve the original position and 6074 // scale so that we can revert it when leaving the full 6075 // screen mode? 6076 int x = contentToViewX(data.mDocX); 6077 int y = contentToViewY(data.mDocY); 6078 int width = contentToViewDimension(data.mDocWidth); 6079 int height = contentToViewDimension(data.mDocHeight); 6080 int viewWidth = getViewWidth(); 6081 int viewHeight = getViewHeight(); 6082 int newX = mScrollX; 6083 int newY = mScrollY; 6084 if (x < mScrollX) { 6085 newX = x + (width > viewWidth 6086 ? (width - viewWidth) / 2 : 0); 6087 } else if (x + width > mScrollX + viewWidth) { 6088 newX = x + width - viewWidth - (width > viewWidth 6089 ? (width - viewWidth) / 2 : 0); 6090 } 6091 if (y < mScrollY) { 6092 newY = y + (height > viewHeight 6093 ? (height - viewHeight) / 2 : 0); 6094 } else if (y + height > mScrollY + viewHeight) { 6095 newY = y + height - viewHeight - (height > viewHeight 6096 ? (height - viewHeight) / 2 : 0); 6097 } 6098 scrollTo(newX, newY); 6099 if (width > viewWidth || height > viewHeight) { 6100 mZoomCenterX = viewWidth * .5f; 6101 mZoomCenterY = viewHeight * .5f; 6102 // do not change text wrap scale so that there is no 6103 // reflow 6104 setNewZoomScale(mActualScale 6105 / Math.max((float) width / viewWidth, 6106 (float) height / viewHeight), false, 6107 false); 6108 } 6109 // Now update the bound 6110 mFullScreenHolder.updateBound(contentToViewX(data.mDocX) 6111 - mScrollX, contentToViewY(data.mDocY) - mScrollY, 6112 contentToViewDimension(data.mDocWidth), 6113 contentToViewDimension(data.mDocHeight)); 6114 } 6115 break; 6116 6117 case HIDE_FULLSCREEN: 6118 if (mFullScreenHolder != null) { 6119 mFullScreenHolder.dismiss(); 6120 mFullScreenHolder = null; 6121 } 6122 break; 6123 6124 case DOM_FOCUS_CHANGED: 6125 if (inEditingMode()) { 6126 nativeClearCursor(); 6127 rebuildWebTextView(); 6128 } 6129 break; 6130 6131 case SHOW_RECT_MSG_ID: { 6132 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6133 int x = mScrollX; 6134 int left = contentToViewX(data.mLeft); 6135 int width = contentToViewDimension(data.mWidth); 6136 int maxWidth = contentToViewDimension(data.mContentWidth); 6137 int viewWidth = getViewWidth(); 6138 if (width < viewWidth) { 6139 // center align 6140 x += left + width / 2 - mScrollX - viewWidth / 2; 6141 } else { 6142 x += (int) (left + data.mXPercentInDoc * width 6143 - mScrollX - data.mXPercentInView * viewWidth); 6144 } 6145 if (DebugFlags.WEB_VIEW) { 6146 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6147 width + ",maxWidth=" + maxWidth + 6148 ",viewWidth=" + viewWidth + ",x=" 6149 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6150 ",xPercentInView=" + data.mXPercentInView+ ")"); 6151 } 6152 // use the passing content width to cap x as the current 6153 // mContentWidth may not be updated yet 6154 x = Math.max(0, 6155 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6156 int top = contentToViewY(data.mTop); 6157 int height = contentToViewDimension(data.mHeight); 6158 int maxHeight = contentToViewDimension(data.mContentHeight); 6159 int viewHeight = getViewHeight(); 6160 int y = (int) (top + data.mYPercentInDoc * height - 6161 data.mYPercentInView * viewHeight); 6162 if (DebugFlags.WEB_VIEW) { 6163 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6164 height + ",maxHeight=" + maxHeight + 6165 ",viewHeight=" + viewHeight + ",y=" 6166 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6167 ",yPercentInView=" + data.mYPercentInView+ ")"); 6168 } 6169 // use the passing content height to cap y as the current 6170 // mContentHeight may not be updated yet 6171 y = Math.max(0, 6172 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6173 // We need to take into account the visible title height 6174 // when scrolling since y is an absolute view position. 6175 y = Math.max(0, y - getVisibleTitleHeight()); 6176 scrollTo(x, y); 6177 } 6178 break; 6179 6180 default: 6181 super.handleMessage(msg); 6182 break; 6183 } 6184 } 6185 } 6186 6187 // Class used to use a dropdown for a <select> element 6188 private class InvokeListBox implements Runnable { 6189 // Whether the listbox allows multiple selection. 6190 private boolean mMultiple; 6191 // Passed in to a list with multiple selection to tell 6192 // which items are selected. 6193 private int[] mSelectedArray; 6194 // Passed in to a list with single selection to tell 6195 // where the initial selection is. 6196 private int mSelection; 6197 6198 private Container[] mContainers; 6199 6200 // Need these to provide stable ids to my ArrayAdapter, 6201 // which normally does not have stable ids. (Bug 1250098) 6202 private class Container extends Object { 6203 /** 6204 * Possible values for mEnabled. Keep in sync with OptionStatus in 6205 * WebViewCore.cpp 6206 */ 6207 final static int OPTGROUP = -1; 6208 final static int OPTION_DISABLED = 0; 6209 final static int OPTION_ENABLED = 1; 6210 6211 String mString; 6212 int mEnabled; 6213 int mId; 6214 6215 public String toString() { 6216 return mString; 6217 } 6218 } 6219 6220 /** 6221 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6222 * and allow filtering. 6223 */ 6224 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6225 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6226 super(context, 6227 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6228 com.android.internal.R.layout.select_dialog_singlechoice, 6229 objects); 6230 } 6231 6232 @Override 6233 public View getView(int position, View convertView, 6234 ViewGroup parent) { 6235 // Always pass in null so that we will get a new CheckedTextView 6236 // Otherwise, an item which was previously used as an <optgroup> 6237 // element (i.e. has no check), could get used as an <option> 6238 // element, which needs a checkbox/radio, but it would not have 6239 // one. 6240 convertView = super.getView(position, null, parent); 6241 Container c = item(position); 6242 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6243 // ListView does not draw dividers between disabled and 6244 // enabled elements. Use a LinearLayout to provide dividers 6245 LinearLayout layout = new LinearLayout(mContext); 6246 layout.setOrientation(LinearLayout.VERTICAL); 6247 if (position > 0) { 6248 View dividerTop = new View(mContext); 6249 dividerTop.setBackgroundResource( 6250 android.R.drawable.divider_horizontal_bright); 6251 layout.addView(dividerTop); 6252 } 6253 6254 if (Container.OPTGROUP == c.mEnabled) { 6255 // Currently select_dialog_multichoice and 6256 // select_dialog_singlechoice are CheckedTextViews. If 6257 // that changes, the class cast will no longer be valid. 6258 Assert.assertTrue( 6259 convertView instanceof CheckedTextView); 6260 ((CheckedTextView) convertView).setCheckMarkDrawable( 6261 null); 6262 } else { 6263 // c.mEnabled == Container.OPTION_DISABLED 6264 // Draw the disabled element in a disabled state. 6265 convertView.setEnabled(false); 6266 } 6267 6268 layout.addView(convertView); 6269 if (position < getCount() - 1) { 6270 View dividerBottom = new View(mContext); 6271 dividerBottom.setBackgroundResource( 6272 android.R.drawable.divider_horizontal_bright); 6273 layout.addView(dividerBottom); 6274 } 6275 return layout; 6276 } 6277 return convertView; 6278 } 6279 6280 @Override 6281 public boolean hasStableIds() { 6282 // AdapterView's onChanged method uses this to determine whether 6283 // to restore the old state. Return false so that the old (out 6284 // of date) state does not replace the new, valid state. 6285 return false; 6286 } 6287 6288 private Container item(int position) { 6289 if (position < 0 || position >= getCount()) { 6290 return null; 6291 } 6292 return (Container) getItem(position); 6293 } 6294 6295 @Override 6296 public long getItemId(int position) { 6297 Container item = item(position); 6298 if (item == null) { 6299 return -1; 6300 } 6301 return item.mId; 6302 } 6303 6304 @Override 6305 public boolean areAllItemsEnabled() { 6306 return false; 6307 } 6308 6309 @Override 6310 public boolean isEnabled(int position) { 6311 Container item = item(position); 6312 if (item == null) { 6313 return false; 6314 } 6315 return Container.OPTION_ENABLED == item.mEnabled; 6316 } 6317 } 6318 6319 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 6320 mMultiple = true; 6321 mSelectedArray = selected; 6322 6323 int length = array.length; 6324 mContainers = new Container[length]; 6325 for (int i = 0; i < length; i++) { 6326 mContainers[i] = new Container(); 6327 mContainers[i].mString = array[i]; 6328 mContainers[i].mEnabled = enabled[i]; 6329 mContainers[i].mId = i; 6330 } 6331 } 6332 6333 private InvokeListBox(String[] array, int[] enabled, int selection) { 6334 mSelection = selection; 6335 mMultiple = false; 6336 6337 int length = array.length; 6338 mContainers = new Container[length]; 6339 for (int i = 0; i < length; i++) { 6340 mContainers[i] = new Container(); 6341 mContainers[i].mString = array[i]; 6342 mContainers[i].mEnabled = enabled[i]; 6343 mContainers[i].mId = i; 6344 } 6345 } 6346 6347 /* 6348 * Whenever the data set changes due to filtering, this class ensures 6349 * that the checked item remains checked. 6350 */ 6351 private class SingleDataSetObserver extends DataSetObserver { 6352 private long mCheckedId; 6353 private ListView mListView; 6354 private Adapter mAdapter; 6355 6356 /* 6357 * Create a new observer. 6358 * @param id The ID of the item to keep checked. 6359 * @param l ListView for getting and clearing the checked states 6360 * @param a Adapter for getting the IDs 6361 */ 6362 public SingleDataSetObserver(long id, ListView l, Adapter a) { 6363 mCheckedId = id; 6364 mListView = l; 6365 mAdapter = a; 6366 } 6367 6368 public void onChanged() { 6369 // The filter may have changed which item is checked. Find the 6370 // item that the ListView thinks is checked. 6371 int position = mListView.getCheckedItemPosition(); 6372 long id = mAdapter.getItemId(position); 6373 if (mCheckedId != id) { 6374 // Clear the ListView's idea of the checked item, since 6375 // it is incorrect 6376 mListView.clearChoices(); 6377 // Search for mCheckedId. If it is in the filtered list, 6378 // mark it as checked 6379 int count = mAdapter.getCount(); 6380 for (int i = 0; i < count; i++) { 6381 if (mAdapter.getItemId(i) == mCheckedId) { 6382 mListView.setItemChecked(i, true); 6383 break; 6384 } 6385 } 6386 } 6387 } 6388 6389 public void onInvalidate() {} 6390 } 6391 6392 public void run() { 6393 final ListView listView = (ListView) LayoutInflater.from(mContext) 6394 .inflate(com.android.internal.R.layout.select_dialog, null); 6395 final MyArrayListAdapter adapter = new 6396 MyArrayListAdapter(mContext, mContainers, mMultiple); 6397 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 6398 .setView(listView).setCancelable(true) 6399 .setInverseBackgroundForced(true); 6400 6401 if (mMultiple) { 6402 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 6403 public void onClick(DialogInterface dialog, int which) { 6404 mWebViewCore.sendMessage( 6405 EventHub.LISTBOX_CHOICES, 6406 adapter.getCount(), 0, 6407 listView.getCheckedItemPositions()); 6408 }}); 6409 b.setNegativeButton(android.R.string.cancel, 6410 new DialogInterface.OnClickListener() { 6411 public void onClick(DialogInterface dialog, int which) { 6412 mWebViewCore.sendMessage( 6413 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6414 }}); 6415 } 6416 final AlertDialog dialog = b.create(); 6417 listView.setAdapter(adapter); 6418 listView.setFocusableInTouchMode(true); 6419 // There is a bug (1250103) where the checks in a ListView with 6420 // multiple items selected are associated with the positions, not 6421 // the ids, so the items do not properly retain their checks when 6422 // filtered. Do not allow filtering on multiple lists until 6423 // that bug is fixed. 6424 6425 listView.setTextFilterEnabled(!mMultiple); 6426 if (mMultiple) { 6427 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 6428 int length = mSelectedArray.length; 6429 for (int i = 0; i < length; i++) { 6430 listView.setItemChecked(mSelectedArray[i], true); 6431 } 6432 } else { 6433 listView.setOnItemClickListener(new OnItemClickListener() { 6434 public void onItemClick(AdapterView parent, View v, 6435 int position, long id) { 6436 mWebViewCore.sendMessage( 6437 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 6438 dialog.dismiss(); 6439 } 6440 }); 6441 if (mSelection != -1) { 6442 listView.setSelection(mSelection); 6443 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 6444 listView.setItemChecked(mSelection, true); 6445 DataSetObserver observer = new SingleDataSetObserver( 6446 adapter.getItemId(mSelection), listView, adapter); 6447 adapter.registerDataSetObserver(observer); 6448 } 6449 } 6450 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 6451 public void onCancel(DialogInterface dialog) { 6452 mWebViewCore.sendMessage( 6453 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6454 } 6455 }); 6456 dialog.show(); 6457 } 6458 } 6459 6460 /* 6461 * Request a dropdown menu for a listbox with multiple selection. 6462 * 6463 * @param array Labels for the listbox. 6464 * @param enabledArray State for each element in the list. See static 6465 * integers in Container class. 6466 * @param selectedArray Which positions are initally selected. 6467 */ 6468 void requestListBox(String[] array, int[] enabledArray, int[] 6469 selectedArray) { 6470 mPrivateHandler.post( 6471 new InvokeListBox(array, enabledArray, selectedArray)); 6472 } 6473 6474 private void updateZoomRange(WebViewCore.RestoreState restoreState, 6475 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 6476 if (restoreState.mMinScale == 0) { 6477 if (restoreState.mMobileSite) { 6478 if (minPrefWidth > Math.max(0, viewWidth)) { 6479 mMinZoomScale = (float) viewWidth / minPrefWidth; 6480 mMinZoomScaleFixed = false; 6481 if (updateZoomOverview) { 6482 WebSettings settings = getSettings(); 6483 mInZoomOverview = settings.getUseWideViewPort() && 6484 settings.getLoadWithOverviewMode(); 6485 } 6486 } else { 6487 mMinZoomScale = restoreState.mDefaultScale; 6488 mMinZoomScaleFixed = true; 6489 } 6490 } else { 6491 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 6492 mMinZoomScaleFixed = false; 6493 } 6494 } else { 6495 mMinZoomScale = restoreState.mMinScale; 6496 mMinZoomScaleFixed = true; 6497 } 6498 if (restoreState.mMaxScale == 0) { 6499 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 6500 } else { 6501 mMaxZoomScale = restoreState.mMaxScale; 6502 } 6503 } 6504 6505 /* 6506 * Request a dropdown menu for a listbox with single selection or a single 6507 * <select> element. 6508 * 6509 * @param array Labels for the listbox. 6510 * @param enabledArray State for each element in the list. See static 6511 * integers in Container class. 6512 * @param selection Which position is initally selected. 6513 */ 6514 void requestListBox(String[] array, int[] enabledArray, int selection) { 6515 mPrivateHandler.post( 6516 new InvokeListBox(array, enabledArray, selection)); 6517 } 6518 6519 // called by JNI 6520 private void sendMoveFocus(int frame, int node) { 6521 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 6522 new WebViewCore.CursorData(frame, node, 0, 0)); 6523 } 6524 6525 // called by JNI 6526 private void sendMoveMouse(int frame, int node, int x, int y) { 6527 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 6528 new WebViewCore.CursorData(frame, node, x, y)); 6529 } 6530 6531 /* 6532 * Send a mouse move event to the webcore thread. 6533 * 6534 * @param removeFocus Pass true if the "mouse" cursor is now over a node 6535 * which wants key events, but it is not the focus. This 6536 * will make the visual appear as though nothing is in 6537 * focus. Remove the WebTextView, if present, and stop 6538 * drawing the blinking caret. 6539 * called by JNI 6540 */ 6541 private void sendMoveMouseIfLatest(boolean removeFocus) { 6542 if (removeFocus) { 6543 clearTextEntry(); 6544 setFocusControllerInactive(); 6545 } 6546 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 6547 cursorData()); 6548 } 6549 6550 // called by JNI 6551 private void sendMotionUp(int touchGeneration, 6552 int frame, int node, int x, int y) { 6553 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6554 touchUpData.mMoveGeneration = touchGeneration; 6555 touchUpData.mFrame = frame; 6556 touchUpData.mNode = node; 6557 touchUpData.mX = x; 6558 touchUpData.mY = y; 6559 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6560 } 6561 6562 6563 private int getScaledMaxXScroll() { 6564 int width; 6565 if (mHeightCanMeasure == false) { 6566 width = getViewWidth() / 4; 6567 } else { 6568 Rect visRect = new Rect(); 6569 calcOurVisibleRect(visRect); 6570 width = visRect.width() / 2; 6571 } 6572 // FIXME the divisor should be retrieved from somewhere 6573 return viewToContentX(width); 6574 } 6575 6576 private int getScaledMaxYScroll() { 6577 int height; 6578 if (mHeightCanMeasure == false) { 6579 height = getViewHeight() / 4; 6580 } else { 6581 Rect visRect = new Rect(); 6582 calcOurVisibleRect(visRect); 6583 height = visRect.height() / 2; 6584 } 6585 // FIXME the divisor should be retrieved from somewhere 6586 // the closest thing today is hard-coded into ScrollView.java 6587 // (from ScrollView.java, line 363) int maxJump = height/2; 6588 return Math.round(height * mInvActualScale); 6589 } 6590 6591 /** 6592 * Called by JNI to invalidate view 6593 */ 6594 private void viewInvalidate() { 6595 invalidate(); 6596 } 6597 6598 // return true if the key was handled 6599 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 6600 long time, boolean ignorePlugin) { 6601 if (mNativeClass == 0) { 6602 return false; 6603 } 6604 if (ignorePlugin == false && nativeFocusIsPlugin()) { 6605 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 6606 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 6607 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 6608 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 6609 , 0, 0, 0); 6610 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 6611 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 6612 return true; 6613 } 6614 mLastCursorTime = time; 6615 mLastCursorBounds = nativeGetCursorRingBounds(); 6616 boolean keyHandled 6617 = nativeMoveCursor(keyCode, count, noScroll) == false; 6618 if (DebugFlags.WEB_VIEW) { 6619 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 6620 + " mLastCursorTime=" + mLastCursorTime 6621 + " handled=" + keyHandled); 6622 } 6623 if (keyHandled == false || mHeightCanMeasure == false) { 6624 return keyHandled; 6625 } 6626 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 6627 if (contentCursorRingBounds.isEmpty()) return keyHandled; 6628 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 6629 Rect visRect = new Rect(); 6630 calcOurVisibleRect(visRect); 6631 Rect outset = new Rect(visRect); 6632 int maxXScroll = visRect.width() / 2; 6633 int maxYScroll = visRect.height() / 2; 6634 outset.inset(-maxXScroll, -maxYScroll); 6635 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 6636 return keyHandled; 6637 } 6638 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 6639 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 6640 maxXScroll); 6641 if (maxH > 0) { 6642 pinScrollBy(maxH, 0, true, 0); 6643 } else { 6644 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 6645 -maxXScroll); 6646 if (maxH < 0) { 6647 pinScrollBy(maxH, 0, true, 0); 6648 } 6649 } 6650 if (mLastCursorBounds.isEmpty()) return keyHandled; 6651 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 6652 return keyHandled; 6653 } 6654 if (DebugFlags.WEB_VIEW) { 6655 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 6656 + contentCursorRingBounds); 6657 } 6658 requestRectangleOnScreen(viewCursorRingBounds); 6659 mUserScroll = true; 6660 return keyHandled; 6661 } 6662 6663 /** 6664 * Set the background color. It's white by default. Pass 6665 * zero to make the view transparent. 6666 * @param color the ARGB color described by Color.java 6667 */ 6668 public void setBackgroundColor(int color) { 6669 mBackgroundColor = color; 6670 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 6671 } 6672 6673 public void debugDump() { 6674 nativeDebugDump(); 6675 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 6676 } 6677 6678 /** 6679 * Draw the HTML page into the specified canvas. This call ignores any 6680 * view-specific zoom, scroll offset, or other changes. It does not draw 6681 * any view-specific chrome, such as progress or URL bars. 6682 * 6683 * @hide only needs to be accessible to Browser and testing 6684 */ 6685 public void drawPage(Canvas canvas) { 6686 mWebViewCore.drawContentPicture(canvas, 0, false, false); 6687 } 6688 6689 /** 6690 * Set the time to wait between passing touches to WebCore. See also the 6691 * TOUCH_SENT_INTERVAL member for further discussion. 6692 * 6693 * @hide This is only used by the DRT test application. 6694 */ 6695 public void setTouchInterval(int interval) { 6696 mCurrentTouchInterval = interval; 6697 } 6698 6699 /** 6700 * Update our cache with updatedText. 6701 * @param updatedText The new text to put in our cache. 6702 */ 6703 /* package */ void updateCachedTextfield(String updatedText) { 6704 // Also place our generation number so that when we look at the cache 6705 // we recognize that it is up to date. 6706 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 6707 } 6708 6709 private native int nativeCacheHitFramePointer(); 6710 private native Rect nativeCacheHitNodeBounds(); 6711 private native int nativeCacheHitNodePointer(); 6712 /* package */ native void nativeClearCursor(); 6713 private native void nativeCreate(int ptr); 6714 private native int nativeCursorFramePointer(); 6715 private native Rect nativeCursorNodeBounds(); 6716 private native int nativeCursorNodePointer(); 6717 /* package */ native boolean nativeCursorMatchesFocus(); 6718 private native boolean nativeCursorIntersects(Rect visibleRect); 6719 private native boolean nativeCursorIsAnchor(); 6720 private native boolean nativeCursorIsTextInput(); 6721 private native Point nativeCursorPosition(); 6722 private native String nativeCursorText(); 6723 /** 6724 * Returns true if the native cursor node says it wants to handle key events 6725 * (ala plugins). This can only be called if mNativeClass is non-zero! 6726 */ 6727 private native boolean nativeCursorWantsKeyEvents(); 6728 private native void nativeDebugDump(); 6729 private native void nativeDestroy(); 6730 private native void nativeDrawCursorRing(Canvas content); 6731 private native void nativeDestroyLayer(int layer); 6732 private native int nativeEvaluateLayersAnimations(int layer); 6733 private native boolean nativeLayersHaveAnimations(int layer); 6734 private native void nativeUpdateLayers(int updates); 6735 private native void nativeDrawLayers(int layer, 6736 int scrollX, int scrollY, 6737 int width, int height, 6738 float scale, Canvas canvas); 6739 private native void nativeDrawMatches(Canvas canvas); 6740 private native void nativeDrawSelectionPointer(Canvas content, 6741 float scale, int x, int y, boolean extendSelection); 6742 private native void nativeDrawSelectionRegion(Canvas content); 6743 private native void nativeDumpDisplayTree(String urlOrNull); 6744 private native int nativeFindAll(String findLower, String findUpper); 6745 private native void nativeFindNext(boolean forward); 6746 /* package */ native int nativeFocusCandidateFramePointer(); 6747 private native boolean nativeFocusCandidateIsPassword(); 6748 private native boolean nativeFocusCandidateIsRtlText(); 6749 private native boolean nativeFocusCandidateIsTextInput(); 6750 /* package */ native int nativeFocusCandidateMaxLength(); 6751 /* package */ native String nativeFocusCandidateName(); 6752 private native Rect nativeFocusCandidateNodeBounds(); 6753 private native int nativeFocusCandidatePointer(); 6754 private native String nativeFocusCandidateText(); 6755 private native int nativeFocusCandidateTextSize(); 6756 /** 6757 * Returns an integer corresponding to WebView.cpp::type. 6758 * See WebTextView.setType() 6759 */ 6760 private native int nativeFocusCandidateType(); 6761 private native boolean nativeFocusIsPlugin(); 6762 /* package */ native int nativeFocusNodePointer(); 6763 private native Rect nativeGetCursorRingBounds(); 6764 private native String nativeGetSelection(); 6765 private native boolean nativeHasCursorNode(); 6766 private native boolean nativeHasFocusNode(); 6767 private native void nativeHideCursor(); 6768 private native String nativeImageURI(int x, int y); 6769 private native void nativeInstrumentReport(); 6770 /* package */ native void nativeMoveCursorToNextTextInput(); 6771 // return true if the page has been scrolled 6772 private native boolean nativeMotionUp(int x, int y, int slop); 6773 // returns false if it handled the key 6774 private native boolean nativeMoveCursor(int keyCode, int count, 6775 boolean noScroll); 6776 private native int nativeMoveGeneration(); 6777 private native void nativeMoveSelection(int x, int y, 6778 boolean extendSelection); 6779 private native boolean nativePointInNavCache(int x, int y, int slop); 6780 // Like many other of our native methods, you must make sure that 6781 // mNativeClass is not null before calling this method. 6782 private native void nativeRecordButtons(boolean focused, 6783 boolean pressed, boolean invalidate); 6784 private native void nativeSelectBestAt(Rect rect); 6785 private native void nativeSetFindIsUp(); 6786 private native void nativeSetFollowedLink(boolean followed); 6787 private native void nativeSetHeightCanMeasure(boolean measure); 6788 private native int nativeTextGeneration(); 6789 // Never call this version except by updateCachedTextfield(String) - 6790 // we always want to pass in our generation number. 6791 private native void nativeUpdateCachedTextfield(String updatedText, 6792 int generation); 6793 // return NO_LEFTEDGE means failure. 6794 private static final int NO_LEFTEDGE = -1; 6795 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 6796} 6797