WebView.java revision c9532609f5248a73a19cd2b02f6824cf7b65d65d
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.provider.Checkin; 42import android.text.IClipboard; 43import android.text.Selection; 44import android.text.Spannable; 45import android.util.AttributeSet; 46import android.util.EventLog; 47import android.util.Log; 48import android.util.TypedValue; 49import android.view.Gravity; 50import android.view.KeyEvent; 51import android.view.LayoutInflater; 52import android.view.MotionEvent; 53import android.view.ScaleGestureDetector; 54import android.view.SoundEffectConstants; 55import android.view.VelocityTracker; 56import android.view.View; 57import android.view.ViewConfiguration; 58import android.view.ViewGroup; 59import android.view.ViewTreeObserver; 60import android.view.animation.AlphaAnimation; 61import android.view.inputmethod.EditorInfo; 62import android.view.inputmethod.InputConnection; 63import android.view.inputmethod.InputMethodManager; 64import android.webkit.WebTextView.AutoCompleteAdapter; 65import android.webkit.WebViewCore.EventHub; 66import android.widget.AbsoluteLayout; 67import android.widget.Adapter; 68import android.widget.AdapterView; 69import android.widget.ArrayAdapter; 70import android.widget.CheckedTextView; 71import android.widget.FrameLayout; 72import android.widget.LinearLayout; 73import android.widget.ListView; 74import android.widget.Scroller; 75import android.widget.Toast; 76import android.widget.ZoomButtonsController; 77import android.widget.ZoomControls; 78import android.widget.AdapterView.OnItemClickListener; 79 80import java.io.File; 81import java.io.FileInputStream; 82import java.io.FileNotFoundException; 83import java.io.FileOutputStream; 84import java.io.IOException; 85import java.net.URLDecoder; 86import java.util.ArrayList; 87import java.util.List; 88import java.util.HashMap; 89import java.util.Map; 90 91import junit.framework.Assert; 92 93/** 94 * <p>A View that displays web pages. This class is the basis upon which you 95 * can roll your own web browser or simply display some online content within your Activity. 96 * It uses the WebKit rendering engine to display 97 * web pages and includes methods to navigate forward and backward 98 * through a history, zoom in and out, perform text searches and more.</p> 99 * <p>To enable the built-in zoom, set 100 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 101 * (introduced in API version 3). 102 * <p>Note that, in order for your Activity to access the Internet and load web pages 103 * in a WebView, you must add the <var>INTERNET</var> permissions to your 104 * Android Manifest file:</p> 105 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 106 * 107 * <p>This must be a child of the <code><manifest></code> element.</p> 108 * 109 * <h3>Basic usage</h3> 110 * 111 * <p>By default, a WebView provides no browser-like widgets, does not 112 * enable JavaScript and errors will be ignored. If your goal is only 113 * to display some HTML as a part of your UI, this is probably fine; 114 * the user won't need to interact with the web page beyond reading 115 * it, and the web page won't need to interact with the user. If you 116 * actually want a fully blown web browser, then you probably want to 117 * invoke the Browser application with your URL rather than show it 118 * with a WebView. See {@link android.content.Intent} for more information.</p> 119 * 120 * <pre class="prettyprint"> 121 * WebView webview = new WebView(this); 122 * setContentView(webview); 123 * 124 * // Simplest usage: note that an exception will NOT be thrown 125 * // if there is an error loading this page (see below). 126 * webview.loadUrl("http://slashdot.org/"); 127 * 128 * // Of course you can also load from any string: 129 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 130 * webview.loadData(summary, "text/html", "utf-8"); 131 * // ... although note that there are restrictions on what this HTML can do. 132 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 133 * </pre> 134 * 135 * <p>A WebView has several customization points where you can add your 136 * own behavior. These are:</p> 137 * 138 * <ul> 139 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 140 * This class is called when something that might impact a 141 * browser UI happens, for instance, progress updates and 142 * JavaScript alerts are sent here. 143 * </li> 144 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 145 * It will be called when things happen that impact the 146 * rendering of the content, eg, errors or form submissions. You 147 * can also intercept URL loading here.</li> 148 * <li>Via the {@link android.webkit.WebSettings} class, which contains 149 * miscellaneous configuration. </li> 150 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 151 * This lets you bind Java objects into the WebView so they can be 152 * controlled from the web pages JavaScript.</li> 153 * </ul> 154 * 155 * <p>Here's a more complicated example, showing error handling, 156 * settings, and progress notification:</p> 157 * 158 * <pre class="prettyprint"> 159 * // Let's display the progress in the activity title bar, like the 160 * // browser app does. 161 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 162 * 163 * webview.getSettings().setJavaScriptEnabled(true); 164 * 165 * final Activity activity = this; 166 * webview.setWebChromeClient(new WebChromeClient() { 167 * public void onProgressChanged(WebView view, int progress) { 168 * // Activities and WebViews measure progress with different scales. 169 * // The progress meter will automatically disappear when we reach 100% 170 * activity.setProgress(progress * 1000); 171 * } 172 * }); 173 * webview.setWebViewClient(new WebViewClient() { 174 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 175 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 176 * } 177 * }); 178 * 179 * webview.loadUrl("http://slashdot.org/"); 180 * </pre> 181 * 182 * <h3>Cookie and window management</h3> 183 * 184 * <p>For obvious security reasons, your application has its own 185 * cache, cookie store etc - it does not share the Browser 186 * applications data. Cookies are managed on a separate thread, so 187 * operations like index building don't block the UI 188 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 189 * if you want to use cookies in your application. 190 * </p> 191 * 192 * <p>By default, requests by the HTML to open new windows are 193 * ignored. This is true whether they be opened by JavaScript or by 194 * the target attribute on a link. You can customize your 195 * WebChromeClient to provide your own behaviour for opening multiple windows, 196 * and render them in whatever manner you want.</p> 197 * 198 * <p>Standard behavior for an Activity is to be destroyed and 199 * recreated when the devices orientation is changed. This will cause 200 * the WebView to reload the current page. If you don't want that, you 201 * can set your Activity to handle the orientation and keyboardHidden 202 * changes, and then just leave the WebView alone. It'll automatically 203 * re-orient itself as appropriate.</p> 204 */ 205public class WebView extends AbsoluteLayout 206 implements ViewTreeObserver.OnGlobalFocusChangeListener, 207 ViewGroup.OnHierarchyChangeListener { 208 209 // enable debug output for drag trackers 210 private static final boolean DEBUG_DRAG_TRACKER = false; 211 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 212 // the screen all-the-time. Good for profiling our drawing code 213 static private final boolean AUTO_REDRAW_HACK = false; 214 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 215 private boolean mAutoRedraw; 216 private int mRootLayer; // C++ pointer to the root layer 217 private boolean mLayersHaveAnimations; 218 private EvaluateLayersAnimations mEvaluateThread; 219 220 static final String LOGTAG = "webview"; 221 222 private static class ExtendedZoomControls extends FrameLayout { 223 public ExtendedZoomControls(Context context, AttributeSet attrs) { 224 super(context, attrs); 225 LayoutInflater inflater = (LayoutInflater) 226 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 227 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 228 mPlusMinusZoomControls = (ZoomControls) findViewById( 229 com.android.internal.R.id.zoomControls); 230 findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( 231 View.GONE); 232 } 233 234 public void show(boolean showZoom, boolean canZoomOut) { 235 mPlusMinusZoomControls.setVisibility( 236 showZoom ? View.VISIBLE : View.GONE); 237 fade(View.VISIBLE, 0.0f, 1.0f); 238 } 239 240 public void hide() { 241 fade(View.GONE, 1.0f, 0.0f); 242 } 243 244 private void fade(int visibility, float startAlpha, float endAlpha) { 245 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 246 anim.setDuration(500); 247 startAnimation(anim); 248 setVisibility(visibility); 249 } 250 251 public boolean hasFocus() { 252 return mPlusMinusZoomControls.hasFocus(); 253 } 254 255 public void setOnZoomInClickListener(OnClickListener listener) { 256 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 257 } 258 259 public void setOnZoomOutClickListener(OnClickListener listener) { 260 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 261 } 262 263 ZoomControls mPlusMinusZoomControls; 264 } 265 266 /** 267 * Transportation object for returning WebView across thread boundaries. 268 */ 269 public class WebViewTransport { 270 private WebView mWebview; 271 272 /** 273 * Set the WebView to the transportation object. 274 * @param webview The WebView to transport. 275 */ 276 public synchronized void setWebView(WebView webview) { 277 mWebview = webview; 278 } 279 280 /** 281 * Return the WebView object. 282 * @return WebView The transported WebView object. 283 */ 284 public synchronized WebView getWebView() { 285 return mWebview; 286 } 287 } 288 289 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 290 private final CallbackProxy mCallbackProxy; 291 292 private final WebViewDatabase mDatabase; 293 294 // SSL certificate for the main top-level page (if secure) 295 private SslCertificate mCertificate; 296 297 // Native WebView pointer that is 0 until the native object has been 298 // created. 299 private int mNativeClass; 300 // This would be final but it needs to be set to null when the WebView is 301 // destroyed. 302 private WebViewCore mWebViewCore; 303 // Handler for dispatching UI messages. 304 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 305 private WebTextView mWebTextView; 306 // Used to ignore changes to webkit text that arrives to the UI side after 307 // more key events. 308 private int mTextGeneration; 309 310 // Used by WebViewCore to create child views. 311 /* package */ final ViewManager mViewManager; 312 313 // Used to display in full screen mode 314 PluginFullScreenHolder mFullScreenHolder; 315 316 /** 317 * Position of the last touch event. 318 */ 319 private float mLastTouchX; 320 private float mLastTouchY; 321 322 /** 323 * Time of the last touch event. 324 */ 325 private long mLastTouchTime; 326 327 /** 328 * Time of the last time sending touch event to WebViewCore 329 */ 330 private long mLastSentTouchTime; 331 332 /** 333 * The minimum elapsed time before sending another ACTION_MOVE event to 334 * WebViewCore. This really should be tuned for each type of the devices. 335 * For example in Google Map api test case, it takes Dream device at least 336 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 337 * triggering the layout and drawing the picture. While the same process 338 * takes 60+ms on the current high speed device. If we make 339 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 340 * to WebViewCore queue and the real layout and draw events will be pushed 341 * to further, which slows down the refresh rate. Choose 50 to favor the 342 * current high speed devices. For Dream like devices, 100 is a better 343 * choice. Maybe make this in the buildspec later. 344 */ 345 private static final int TOUCH_SENT_INTERVAL = 50; 346 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 347 348 /** 349 * Helper class to get velocity for fling 350 */ 351 VelocityTracker mVelocityTracker; 352 private int mMaximumFling; 353 private float mLastVelocity; 354 private float mLastVelX; 355 private float mLastVelY; 356 357 /** 358 * Touch mode 359 */ 360 private int mTouchMode = TOUCH_DONE_MODE; 361 private static final int TOUCH_INIT_MODE = 1; 362 private static final int TOUCH_DRAG_START_MODE = 2; 363 private static final int TOUCH_DRAG_MODE = 3; 364 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 365 private static final int TOUCH_SHORTPRESS_MODE = 5; 366 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 367 private static final int TOUCH_DONE_MODE = 7; 368 private static final int TOUCH_SELECT_MODE = 8; 369 private static final int TOUCH_PINCH_DRAG = 9; 370 371 // Whether to forward the touch events to WebCore 372 private boolean mForwardTouchEvents = false; 373 374 // Whether to prevent drag during touch. The initial value depends on 375 // mForwardTouchEvents. If WebCore wants touch events, we assume it will 376 // take control of touch events unless it says no for touch down event. 377 private static final int PREVENT_DRAG_NO = 0; 378 private static final int PREVENT_DRAG_MAYBE_YES = 1; 379 private static final int PREVENT_DRAG_YES = 2; 380 private int mPreventDrag = PREVENT_DRAG_NO; 381 382 // by default mPreventLongPress is false. If it is true, long press event 383 // will be handled by WebKit instead of UI. 384 private boolean mPreventLongPress = false; 385 // by default mPreventDoubleTap is false. If it is true, double tap event 386 // will be handled by WebKit instead of UI. 387 private boolean mPreventDoubleTap = false; 388 389 // this needs to be in sync with the logic in WebKit's 390 // EventHandler::handleTouchEvent() 391 private static final int TOUCH_PREVENT_DRAG = 0x1; 392 private static final int TOUCH_PREVENT_LONGPRESS = 0x2; 393 private static final int TOUCH_PREVENT_DOUBLETAP = 0x4; 394 395 // To keep track of whether the current drag was initiated by a WebTextView, 396 // so that we know not to hide the cursor 397 boolean mDragFromTextInput; 398 399 // Whether or not to draw the cursor ring. 400 private boolean mDrawCursorRing = true; 401 402 // true if onPause has been called (and not onResume) 403 private boolean mIsPaused; 404 405 /** 406 * Customizable constant 407 */ 408 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 409 private int mTouchSlopSquare; 410 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 411 private int mDoubleTapSlopSquare; 412 // pre-computed density adjusted navigation slop 413 private int mNavSlop; 414 // This should be ViewConfiguration.getTapTimeout() 415 // But system time out is 100ms, which is too short for the browser. 416 // In the browser, if it switches out of tap too soon, jump tap won't work. 417 private static final int TAP_TIMEOUT = 200; 418 // This should be ViewConfiguration.getLongPressTimeout() 419 // But system time out is 500ms, which is too short for the browser. 420 // With a short timeout, it's difficult to treat trigger a short press. 421 private static final int LONG_PRESS_TIMEOUT = 1000; 422 // needed to avoid flinging after a pause of no movement 423 private static final int MIN_FLING_TIME = 250; 424 // draw unfiltered after drag is held without movement 425 private static final int MOTIONLESS_TIME = 100; 426 // The time that the Zoom Controls are visible before fading away 427 private static final long ZOOM_CONTROLS_TIMEOUT = 428 ViewConfiguration.getZoomControlsTimeout(); 429 // The amount of content to overlap between two screens when going through 430 // pages with the space bar, in pixels. 431 private static final int PAGE_SCROLL_OVERLAP = 24; 432 433 /** 434 * These prevent calling requestLayout if either dimension is fixed. This 435 * depends on the layout parameters and the measure specs. 436 */ 437 boolean mWidthCanMeasure; 438 boolean mHeightCanMeasure; 439 440 // Remember the last dimensions we sent to the native side so we can avoid 441 // sending the same dimensions more than once. 442 int mLastWidthSent; 443 int mLastHeightSent; 444 445 private int mContentWidth; // cache of value from WebViewCore 446 private int mContentHeight; // cache of value from WebViewCore 447 448 // Need to have the separate control for horizontal and vertical scrollbar 449 // style than the View's single scrollbar style 450 private boolean mOverlayHorizontalScrollbar = true; 451 private boolean mOverlayVerticalScrollbar = false; 452 453 // our standard speed. this way small distances will be traversed in less 454 // time than large distances, but we cap the duration, so that very large 455 // distances won't take too long to get there. 456 private static final int STD_SPEED = 480; // pixels per second 457 // time for the longest scroll animation 458 private static final int MAX_DURATION = 750; // milliseconds 459 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 460 private Scroller mScroller; 461 462 private boolean mWrapContent; 463 private static final int MOTIONLESS_FALSE = 0; 464 private static final int MOTIONLESS_PENDING = 1; 465 private static final int MOTIONLESS_TRUE = 2; 466 private int mHeldMotionless; 467 468 // whether support multi-touch 469 private boolean mSupportMultiTouch; 470 // use the framework's ScaleGestureDetector to handle multi-touch 471 private ScaleGestureDetector mScaleDetector; 472 // minimum scale change during multi-touch zoom 473 private static float PREVIEW_SCALE_INCREMENT = 0.01f; 474 475 // the anchor point in the document space where VIEW_SIZE_CHANGED should 476 // apply to 477 private int mAnchorX; 478 private int mAnchorY; 479 480 /** 481 * Private message ids 482 */ 483 private static final int REMEMBER_PASSWORD = 1; 484 private static final int NEVER_REMEMBER_PASSWORD = 2; 485 private static final int SWITCH_TO_SHORTPRESS = 3; 486 private static final int SWITCH_TO_LONGPRESS = 4; 487 private static final int RELEASE_SINGLE_TAP = 5; 488 private static final int REQUEST_FORM_DATA = 6; 489 private static final int RESUME_WEBCORE_PRIORITY = 7; 490 private static final int DRAG_HELD_MOTIONLESS = 8; 491 private static final int AWAKEN_SCROLL_BARS = 9; 492 493 //! arg1=x, arg2=y 494 static final int SCROLL_TO_MSG_ID = 10; 495 static final int SCROLL_BY_MSG_ID = 11; 496 //! arg1=x, arg2=y 497 static final int SPAWN_SCROLL_TO_MSG_ID = 12; 498 //! arg1=x, arg2=y 499 static final int SYNC_SCROLL_TO_MSG_ID = 13; 500 static final int NEW_PICTURE_MSG_ID = 14; 501 static final int UPDATE_TEXT_ENTRY_MSG_ID = 15; 502 static final int WEBCORE_INITIALIZED_MSG_ID = 16; 503 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 17; 504 static final int UPDATE_ZOOM_RANGE = 18; 505 static final int MOVE_OUT_OF_PLUGIN = 19; 506 static final int CLEAR_TEXT_ENTRY = 20; 507 static final int UPDATE_TEXT_SELECTION_MSG_ID = 21; 508 static final int SHOW_RECT_MSG_ID = 22; 509 static final int LONG_PRESS_CENTER = 23; 510 static final int PREVENT_TOUCH_ID = 24; 511 static final int WEBCORE_NEED_TOUCH_EVENTS = 25; 512 // obj=Rect in doc coordinates 513 static final int INVAL_RECT_MSG_ID = 26; 514 static final int REQUEST_KEYBOARD = 27; 515 static final int DO_MOTION_UP = 28; 516 static final int SHOW_FULLSCREEN = 29; 517 static final int HIDE_FULLSCREEN = 30; 518 static final int DOM_FOCUS_CHANGED = 31; 519 static final int IMMEDIATE_REPAINT_MSG_ID = 32; 520 static final int SET_ROOT_LAYER_MSG_ID = 33; 521 static final int RETURN_LABEL = 34; 522 static final int FIND_AGAIN = 35; 523 524 static final String[] HandlerDebugString = { 525 "REMEMBER_PASSWORD", // = 1; 526 "NEVER_REMEMBER_PASSWORD", // = 2; 527 "SWITCH_TO_SHORTPRESS", // = 3; 528 "SWITCH_TO_LONGPRESS", // = 4; 529 "RELEASE_SINGLE_TAP", // = 5; 530 "REQUEST_FORM_DATA", // = 6; 531 "RESUME_WEBCORE_PRIORITY", // = 7; 532 "DRAG_HELD_MOTIONLESS", // = 8; 533 "AWAKEN_SCROLL_BARS", // = 9; 534 "SCROLL_TO_MSG_ID", // = 10; 535 "SCROLL_BY_MSG_ID", // = 11; 536 "SPAWN_SCROLL_TO_MSG_ID", // = 12; 537 "SYNC_SCROLL_TO_MSG_ID", // = 13; 538 "NEW_PICTURE_MSG_ID", // = 14; 539 "UPDATE_TEXT_ENTRY_MSG_ID", // = 15; 540 "WEBCORE_INITIALIZED_MSG_ID", // = 16; 541 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 17; 542 "UPDATE_ZOOM_RANGE", // = 18; 543 "MOVE_OUT_OF_PLUGIN", // = 19; 544 "CLEAR_TEXT_ENTRY", // = 20; 545 "UPDATE_TEXT_SELECTION_MSG_ID", // = 21; 546 "SHOW_RECT_MSG_ID", // = 22; 547 "LONG_PRESS_CENTER", // = 23; 548 "PREVENT_TOUCH_ID", // = 24; 549 "WEBCORE_NEED_TOUCH_EVENTS", // = 25; 550 "INVAL_RECT_MSG_ID", // = 26; 551 "REQUEST_KEYBOARD", // = 27; 552 "DO_MOTION_UP", // = 28; 553 "SHOW_FULLSCREEN", // = 29; 554 "HIDE_FULLSCREEN", // = 30; 555 "DOM_FOCUS_CHANGED", // = 31; 556 "IMMEDIATE_REPAINT_MSG_ID", // = 32; 557 "SET_ROOT_LAYER_MSG_ID", // = 33; 558 "RETURN_LABEL", // = 34; 559 "FIND_AGAIN" // = 35; 560 }; 561 562 // If the site doesn't use the viewport meta tag to specify the viewport, 563 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 564 static final int DEFAULT_VIEWPORT_WIDTH = 800; 565 566 // normally we try to fit the content to the minimum preferred width 567 // calculated by the Webkit. To avoid the bad behavior when some site's 568 // minimum preferred width keeps growing when changing the viewport width or 569 // the minimum preferred width is huge, an upper limit is needed. 570 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 571 572 // default scale limit. Depending on the display density 573 private static float DEFAULT_MAX_ZOOM_SCALE; 574 private static float DEFAULT_MIN_ZOOM_SCALE; 575 // scale limit, which can be set through viewport meta tag in the web page 576 private float mMaxZoomScale; 577 private float mMinZoomScale; 578 private boolean mMinZoomScaleFixed = true; 579 580 // initial scale in percent. 0 means using default. 581 private int mInitialScaleInPercent = 0; 582 583 // while in the zoom overview mode, the page's width is fully fit to the 584 // current window. The page is alive, in another words, you can click to 585 // follow the links. Double tap will toggle between zoom overview mode and 586 // the last zoom scale. 587 boolean mInZoomOverview = false; 588 589 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 590 // engadget always have wider mContentWidth no matter what viewport size is. 591 int mZoomOverviewWidth = DEFAULT_VIEWPORT_WIDTH; 592 float mTextWrapScale; 593 594 // default scale. Depending on the display density. 595 static int DEFAULT_SCALE_PERCENT; 596 private float mDefaultScale; 597 598 // set to true temporarily during ScaleGesture triggered zoom 599 private boolean mPreviewZoomOnly = false; 600 601 // computed scale and inverse, from mZoomWidth. 602 private float mActualScale; 603 private float mInvActualScale; 604 // if this is non-zero, it is used on drawing rather than mActualScale 605 private float mZoomScale; 606 private float mInvInitialZoomScale; 607 private float mInvFinalZoomScale; 608 private int mInitialScrollX; 609 private int mInitialScrollY; 610 private long mZoomStart; 611 private static final int ZOOM_ANIMATION_LENGTH = 500; 612 613 private boolean mUserScroll = false; 614 615 private int mSnapScrollMode = SNAP_NONE; 616 private static final int SNAP_NONE = 0; 617 private static final int SNAP_LOCK = 1; // not a separate state 618 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 619 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 620 private boolean mSnapPositive; 621 622 // Used to match key downs and key ups 623 private boolean mGotKeyDown; 624 625 /* package */ static boolean mLogEvent = true; 626 private static final int EVENT_LOG_ZOOM_LEVEL_CHANGE = 70101; 627 private static final int EVENT_LOG_DOUBLE_TAP_DURATION = 70102; 628 629 // for event log 630 private long mLastTouchUpTime = 0; 631 632 /** 633 * URI scheme for telephone number 634 */ 635 public static final String SCHEME_TEL = "tel:"; 636 /** 637 * URI scheme for email address 638 */ 639 public static final String SCHEME_MAILTO = "mailto:"; 640 /** 641 * URI scheme for map address 642 */ 643 public static final String SCHEME_GEO = "geo:0,0?q="; 644 645 private int mBackgroundColor = Color.WHITE; 646 647 // Used to notify listeners of a new picture. 648 private PictureListener mPictureListener; 649 /** 650 * Interface to listen for new pictures as they change. 651 */ 652 public interface PictureListener { 653 /** 654 * Notify the listener that the picture has changed. 655 * @param view The WebView that owns the picture. 656 * @param picture The new picture. 657 */ 658 public void onNewPicture(WebView view, Picture picture); 659 } 660 661 // FIXME: Want to make this public, but need to change the API file. 662 public /*static*/ class HitTestResult { 663 /** 664 * Default HitTestResult, where the target is unknown 665 */ 666 public static final int UNKNOWN_TYPE = 0; 667 /** 668 * HitTestResult for hitting a HTML::a tag 669 */ 670 public static final int ANCHOR_TYPE = 1; 671 /** 672 * HitTestResult for hitting a phone number 673 */ 674 public static final int PHONE_TYPE = 2; 675 /** 676 * HitTestResult for hitting a map address 677 */ 678 public static final int GEO_TYPE = 3; 679 /** 680 * HitTestResult for hitting an email address 681 */ 682 public static final int EMAIL_TYPE = 4; 683 /** 684 * HitTestResult for hitting an HTML::img tag 685 */ 686 public static final int IMAGE_TYPE = 5; 687 /** 688 * HitTestResult for hitting a HTML::a tag which contains HTML::img 689 */ 690 public static final int IMAGE_ANCHOR_TYPE = 6; 691 /** 692 * HitTestResult for hitting a HTML::a tag with src=http 693 */ 694 public static final int SRC_ANCHOR_TYPE = 7; 695 /** 696 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 697 */ 698 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 699 /** 700 * HitTestResult for hitting an edit text area 701 */ 702 public static final int EDIT_TEXT_TYPE = 9; 703 704 private int mType; 705 private String mExtra; 706 707 HitTestResult() { 708 mType = UNKNOWN_TYPE; 709 } 710 711 private void setType(int type) { 712 mType = type; 713 } 714 715 private void setExtra(String extra) { 716 mExtra = extra; 717 } 718 719 public int getType() { 720 return mType; 721 } 722 723 public String getExtra() { 724 return mExtra; 725 } 726 } 727 728 // The View containing the zoom controls 729 private ExtendedZoomControls mZoomControls; 730 private Runnable mZoomControlRunnable; 731 732 private ZoomButtonsController mZoomButtonsController; 733 734 // These keep track of the center point of the zoom. They are used to 735 // determine the point around which we should zoom. 736 private float mZoomCenterX; 737 private float mZoomCenterY; 738 739 private ZoomButtonsController.OnZoomListener mZoomListener = 740 new ZoomButtonsController.OnZoomListener() { 741 742 public void onVisibilityChanged(boolean visible) { 743 if (visible) { 744 switchOutDrawHistory(); 745 // Bring back the hidden zoom controls. 746 mZoomButtonsController.getZoomControls().setVisibility( 747 View.VISIBLE); 748 updateZoomButtonsEnabled(); 749 } 750 } 751 752 public void onZoom(boolean zoomIn) { 753 if (zoomIn) { 754 zoomIn(); 755 } else { 756 zoomOut(); 757 } 758 759 updateZoomButtonsEnabled(); 760 } 761 }; 762 763 /** 764 * Construct a new WebView with a Context object. 765 * @param context A Context object used to access application assets. 766 */ 767 public WebView(Context context) { 768 this(context, null); 769 } 770 771 /** 772 * Construct a new WebView with layout parameters. 773 * @param context A Context object used to access application assets. 774 * @param attrs An AttributeSet passed to our parent. 775 */ 776 public WebView(Context context, AttributeSet attrs) { 777 this(context, attrs, com.android.internal.R.attr.webViewStyle); 778 } 779 780 /** 781 * Construct a new WebView with layout parameters and a default style. 782 * @param context A Context object used to access application assets. 783 * @param attrs An AttributeSet passed to our parent. 784 * @param defStyle The default style resource ID. 785 */ 786 public WebView(Context context, AttributeSet attrs, int defStyle) { 787 this(context, attrs, defStyle, null); 788 } 789 790 /** 791 * Construct a new WebView with layout parameters, a default style and a set 792 * of custom Javscript interfaces to be added to the WebView at initialization 793 * time. This guarantees that these interfaces will be available when the JS 794 * context is initialized. 795 * @param context A Context object used to access application assets. 796 * @param attrs An AttributeSet passed to our parent. 797 * @param defStyle The default style resource ID. 798 * @param javascriptInterfaces is a Map of intareface names, as keys, and 799 * object implementing those interfaces, as values. 800 * @hide pending API council approval. 801 */ 802 protected WebView(Context context, AttributeSet attrs, int defStyle, 803 Map<String, Object> javascriptInterfaces) { 804 super(context, attrs, defStyle); 805 init(); 806 807 mCallbackProxy = new CallbackProxy(context, this); 808 mViewManager = new ViewManager(this); 809 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 810 mDatabase = WebViewDatabase.getInstance(context); 811 mScroller = new Scroller(context); 812 813 mZoomButtonsController = new ZoomButtonsController(this); 814 mZoomButtonsController.setOnZoomListener(mZoomListener); 815 // ZoomButtonsController positions the buttons at the bottom, but in 816 // the middle. Change their layout parameters so they appear on the 817 // right. 818 View controls = mZoomButtonsController.getZoomControls(); 819 ViewGroup.LayoutParams params = controls.getLayoutParams(); 820 if (params instanceof FrameLayout.LayoutParams) { 821 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 822 params; 823 frameParams.gravity = Gravity.RIGHT; 824 } 825 updateMultiTouchSupport(context); 826 } 827 828 void updateMultiTouchSupport(Context context) { 829 WebSettings settings = getSettings(); 830 mSupportMultiTouch = context.getPackageManager().hasSystemFeature( 831 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 832 && settings.supportZoom() && settings.getBuiltInZoomControls(); 833 if (mSupportMultiTouch && (mScaleDetector == null)) { 834 mScaleDetector = new ScaleGestureDetector(context, 835 new ScaleDetectorListener()); 836 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 837 mScaleDetector = null; 838 } 839 } 840 841 private void updateZoomButtonsEnabled() { 842 boolean canZoomIn = mActualScale < mMaxZoomScale; 843 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 844 if (!canZoomIn && !canZoomOut) { 845 // Hide the zoom in and out buttons, as well as the fit to page 846 // button, if the page cannot zoom 847 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 848 } else { 849 // Set each one individually, as a page may be able to zoom in 850 // or out. 851 mZoomButtonsController.setZoomInEnabled(canZoomIn); 852 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 853 } 854 } 855 856 private void init() { 857 setWillNotDraw(false); 858 setFocusable(true); 859 setFocusableInTouchMode(true); 860 setClickable(true); 861 setLongClickable(true); 862 863 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 864 int slop = configuration.getScaledTouchSlop(); 865 mTouchSlopSquare = slop * slop; 866 mMinLockSnapReverseDistance = slop; 867 slop = configuration.getScaledDoubleTapSlop(); 868 mDoubleTapSlopSquare = slop * slop; 869 final float density = getContext().getResources().getDisplayMetrics().density; 870 // use one line height, 16 based on our current default font, for how 871 // far we allow a touch be away from the edge of a link 872 mNavSlop = (int) (16 * density); 873 // density adjusted scale factors 874 DEFAULT_SCALE_PERCENT = (int) (100 * density); 875 mDefaultScale = density; 876 mActualScale = density; 877 mInvActualScale = 1 / density; 878 mTextWrapScale = density; 879 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 880 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 881 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 882 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 883 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 884 } 885 886 /* package */void updateDefaultZoomDensity(int zoomDensity) { 887 final float density = getContext().getResources().getDisplayMetrics().density 888 * 100 / zoomDensity; 889 if (Math.abs(density - mDefaultScale) > 0.01) { 890 float scaleFactor = density / mDefaultScale; 891 // adjust the limits 892 mNavSlop = (int) (16 * density); 893 DEFAULT_SCALE_PERCENT = (int) (100 * density); 894 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 895 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 896 mDefaultScale = density; 897 mMaxZoomScale *= scaleFactor; 898 mMinZoomScale *= scaleFactor; 899 setNewZoomScale(mActualScale * scaleFactor, true, false); 900 } 901 } 902 903 /* package */ boolean onSavePassword(String schemePlusHost, String username, 904 String password, final Message resumeMsg) { 905 boolean rVal = false; 906 if (resumeMsg == null) { 907 // null resumeMsg implies saving password silently 908 mDatabase.setUsernamePassword(schemePlusHost, username, password); 909 } else { 910 final Message remember = mPrivateHandler.obtainMessage( 911 REMEMBER_PASSWORD); 912 remember.getData().putString("host", schemePlusHost); 913 remember.getData().putString("username", username); 914 remember.getData().putString("password", password); 915 remember.obj = resumeMsg; 916 917 final Message neverRemember = mPrivateHandler.obtainMessage( 918 NEVER_REMEMBER_PASSWORD); 919 neverRemember.getData().putString("host", schemePlusHost); 920 neverRemember.getData().putString("username", username); 921 neverRemember.getData().putString("password", password); 922 neverRemember.obj = resumeMsg; 923 924 new AlertDialog.Builder(getContext()) 925 .setTitle(com.android.internal.R.string.save_password_label) 926 .setMessage(com.android.internal.R.string.save_password_message) 927 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 928 new DialogInterface.OnClickListener() { 929 public void onClick(DialogInterface dialog, int which) { 930 resumeMsg.sendToTarget(); 931 } 932 }) 933 .setNeutralButton(com.android.internal.R.string.save_password_remember, 934 new DialogInterface.OnClickListener() { 935 public void onClick(DialogInterface dialog, int which) { 936 remember.sendToTarget(); 937 } 938 }) 939 .setNegativeButton(com.android.internal.R.string.save_password_never, 940 new DialogInterface.OnClickListener() { 941 public void onClick(DialogInterface dialog, int which) { 942 neverRemember.sendToTarget(); 943 } 944 }) 945 .setOnCancelListener(new OnCancelListener() { 946 public void onCancel(DialogInterface dialog) { 947 resumeMsg.sendToTarget(); 948 } 949 }).show(); 950 // Return true so that WebViewCore will pause while the dialog is 951 // up. 952 rVal = true; 953 } 954 return rVal; 955 } 956 957 @Override 958 public void setScrollBarStyle(int style) { 959 if (style == View.SCROLLBARS_INSIDE_INSET 960 || style == View.SCROLLBARS_OUTSIDE_INSET) { 961 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 962 } else { 963 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 964 } 965 super.setScrollBarStyle(style); 966 } 967 968 /** 969 * Specify whether the horizontal scrollbar has overlay style. 970 * @param overlay TRUE if horizontal scrollbar should have overlay style. 971 */ 972 public void setHorizontalScrollbarOverlay(boolean overlay) { 973 mOverlayHorizontalScrollbar = overlay; 974 } 975 976 /** 977 * Specify whether the vertical scrollbar has overlay style. 978 * @param overlay TRUE if vertical scrollbar should have overlay style. 979 */ 980 public void setVerticalScrollbarOverlay(boolean overlay) { 981 mOverlayVerticalScrollbar = overlay; 982 } 983 984 /** 985 * Return whether horizontal scrollbar has overlay style 986 * @return TRUE if horizontal scrollbar has overlay style. 987 */ 988 public boolean overlayHorizontalScrollbar() { 989 return mOverlayHorizontalScrollbar; 990 } 991 992 /** 993 * Return whether vertical scrollbar has overlay style 994 * @return TRUE if vertical scrollbar has overlay style. 995 */ 996 public boolean overlayVerticalScrollbar() { 997 return mOverlayVerticalScrollbar; 998 } 999 1000 /* 1001 * Return the width of the view where the content of WebView should render 1002 * to. 1003 * Note: this can be called from WebCoreThread. 1004 */ 1005 /* package */ int getViewWidth() { 1006 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1007 return getWidth(); 1008 } else { 1009 return getWidth() - getVerticalScrollbarWidth(); 1010 } 1011 } 1012 1013 /* 1014 * returns the height of the titlebarview (if any). Does not care about 1015 * scrolling 1016 */ 1017 private int getTitleHeight() { 1018 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1019 } 1020 1021 /* 1022 * Return the amount of the titlebarview (if any) that is visible 1023 */ 1024 private int getVisibleTitleHeight() { 1025 return Math.max(getTitleHeight() - mScrollY, 0); 1026 } 1027 1028 /* 1029 * Return the height of the view where the content of WebView should render 1030 * to. Note that this excludes mTitleBar, if there is one. 1031 * Note: this can be called from WebCoreThread. 1032 */ 1033 /* package */ int getViewHeight() { 1034 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1035 } 1036 1037 private int getViewHeightWithTitle() { 1038 int height = getHeight(); 1039 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1040 height -= getHorizontalScrollbarHeight(); 1041 } 1042 return height; 1043 } 1044 1045 /** 1046 * @return The SSL certificate for the main top-level page or null if 1047 * there is no certificate (the site is not secure). 1048 */ 1049 public SslCertificate getCertificate() { 1050 return mCertificate; 1051 } 1052 1053 /** 1054 * Sets the SSL certificate for the main top-level page. 1055 */ 1056 public void setCertificate(SslCertificate certificate) { 1057 // here, the certificate can be null (if the site is not secure) 1058 mCertificate = certificate; 1059 } 1060 1061 //------------------------------------------------------------------------- 1062 // Methods called by activity 1063 //------------------------------------------------------------------------- 1064 1065 /** 1066 * Save the username and password for a particular host in the WebView's 1067 * internal database. 1068 * @param host The host that required the credentials. 1069 * @param username The username for the given host. 1070 * @param password The password for the given host. 1071 */ 1072 public void savePassword(String host, String username, String password) { 1073 mDatabase.setUsernamePassword(host, username, password); 1074 } 1075 1076 /** 1077 * Set the HTTP authentication credentials for a given host and realm. 1078 * 1079 * @param host The host for the credentials. 1080 * @param realm The realm for the credentials. 1081 * @param username The username for the password. If it is null, it means 1082 * password can't be saved. 1083 * @param password The password 1084 */ 1085 public void setHttpAuthUsernamePassword(String host, String realm, 1086 String username, String password) { 1087 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1088 } 1089 1090 /** 1091 * Retrieve the HTTP authentication username and password for a given 1092 * host & realm pair 1093 * 1094 * @param host The host for which the credentials apply. 1095 * @param realm The realm for which the credentials apply. 1096 * @return String[] if found, String[0] is username, which can be null and 1097 * String[1] is password. Return null if it can't find anything. 1098 */ 1099 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1100 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1101 } 1102 1103 /** 1104 * Destroy the internal state of the WebView. This method should be called 1105 * after the WebView has been removed from the view system. No other 1106 * methods may be called on a WebView after destroy. 1107 */ 1108 public void destroy() { 1109 clearTextEntry(); 1110 if (mWebViewCore != null) { 1111 // Set the handlers to null before destroying WebViewCore so no 1112 // more messages will be posted. 1113 mCallbackProxy.setWebViewClient(null); 1114 mCallbackProxy.setWebChromeClient(null); 1115 // Tell WebViewCore to destroy itself 1116 WebViewCore webViewCore = mWebViewCore; 1117 mWebViewCore = null; // prevent using partial webViewCore 1118 webViewCore.destroy(); 1119 // Remove any pending messages that might not be serviced yet. 1120 mPrivateHandler.removeCallbacksAndMessages(null); 1121 mCallbackProxy.removeCallbacksAndMessages(null); 1122 // Wake up the WebCore thread just in case it is waiting for a 1123 // javascript dialog. 1124 synchronized (mCallbackProxy) { 1125 mCallbackProxy.notify(); 1126 } 1127 } 1128 if (mNativeClass != 0) { 1129 nativeDestroy(); 1130 mNativeClass = 0; 1131 } 1132 } 1133 1134 /** 1135 * Enables platform notifications of data state and proxy changes. 1136 */ 1137 public static void enablePlatformNotifications() { 1138 Network.enablePlatformNotifications(); 1139 } 1140 1141 /** 1142 * If platform notifications are enabled, this should be called 1143 * from the Activity's onPause() or onStop(). 1144 */ 1145 public static void disablePlatformNotifications() { 1146 Network.disablePlatformNotifications(); 1147 } 1148 1149 /** 1150 * Sets JavaScript engine flags. 1151 * 1152 * @param flags JS engine flags in a String 1153 * 1154 * @hide pending API solidification 1155 */ 1156 public void setJsFlags(String flags) { 1157 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1158 } 1159 1160 /** 1161 * Inform WebView of the network state. This is used to set 1162 * the javascript property window.navigator.isOnline and 1163 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1164 * @param networkUp boolean indicating if network is available 1165 */ 1166 public void setNetworkAvailable(boolean networkUp) { 1167 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1168 networkUp ? 1 : 0, 0); 1169 } 1170 1171 /** 1172 * Inform WebView about the current network type. 1173 * {@hide} 1174 */ 1175 public void setNetworkType(String type, String subtype) { 1176 Map<String, String> map = new HashMap<String, String>(); 1177 map.put("type", type); 1178 map.put("subtype", subtype); 1179 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1180 } 1181 /** 1182 * Save the state of this WebView used in 1183 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1184 * method no longer stores the display data for this WebView. The previous 1185 * behavior could potentially leak files if {@link #restoreState} was never 1186 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1187 * and restoring the display data. 1188 * @param outState The Bundle to store the WebView state. 1189 * @return The same copy of the back/forward list used to save the state. If 1190 * saveState fails, the returned list will be null. 1191 * @see #savePicture 1192 * @see #restorePicture 1193 */ 1194 public WebBackForwardList saveState(Bundle outState) { 1195 if (outState == null) { 1196 return null; 1197 } 1198 // We grab a copy of the back/forward list because a client of WebView 1199 // may have invalidated the history list by calling clearHistory. 1200 WebBackForwardList list = copyBackForwardList(); 1201 final int currentIndex = list.getCurrentIndex(); 1202 final int size = list.getSize(); 1203 // We should fail saving the state if the list is empty or the index is 1204 // not in a valid range. 1205 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1206 return null; 1207 } 1208 outState.putInt("index", currentIndex); 1209 // FIXME: This should just be a byte[][] instead of ArrayList but 1210 // Parcel.java does not have the code to handle multi-dimensional 1211 // arrays. 1212 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1213 for (int i = 0; i < size; i++) { 1214 WebHistoryItem item = list.getItemAtIndex(i); 1215 if (null == item) { 1216 // FIXME: this shouldn't happen 1217 // need to determine how item got set to null 1218 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1219 return null; 1220 } 1221 byte[] data = item.getFlattenedData(); 1222 if (data == null) { 1223 // It would be very odd to not have any data for a given history 1224 // item. And we will fail to rebuild the history list without 1225 // flattened data. 1226 return null; 1227 } 1228 history.add(data); 1229 } 1230 outState.putSerializable("history", history); 1231 if (mCertificate != null) { 1232 outState.putBundle("certificate", 1233 SslCertificate.saveState(mCertificate)); 1234 } 1235 return list; 1236 } 1237 1238 /** 1239 * Save the current display data to the Bundle given. Used in conjunction 1240 * with {@link #saveState}. 1241 * @param b A Bundle to store the display data. 1242 * @param dest The file to store the serialized picture data. Will be 1243 * overwritten with this WebView's picture data. 1244 * @return True if the picture was successfully saved. 1245 */ 1246 public boolean savePicture(Bundle b, File dest) { 1247 if (dest == null || b == null) { 1248 return false; 1249 } 1250 final Picture p = capturePicture(); 1251 try { 1252 final FileOutputStream out = new FileOutputStream(dest); 1253 p.writeToStream(out); 1254 out.close(); 1255 } catch (FileNotFoundException e){ 1256 e.printStackTrace(); 1257 } catch (IOException e) { 1258 e.printStackTrace(); 1259 } catch (RuntimeException e) { 1260 e.printStackTrace(); 1261 } 1262 if (dest.length() > 0) { 1263 b.putInt("scrollX", mScrollX); 1264 b.putInt("scrollY", mScrollY); 1265 b.putFloat("scale", mActualScale); 1266 b.putFloat("textwrapScale", mTextWrapScale); 1267 b.putBoolean("overview", mInZoomOverview); 1268 return true; 1269 } 1270 return false; 1271 } 1272 1273 /** 1274 * Restore the display data that was save in {@link #savePicture}. Used in 1275 * conjunction with {@link #restoreState}. 1276 * @param b A Bundle containing the saved display data. 1277 * @param src The file where the picture data was stored. 1278 * @return True if the picture was successfully restored. 1279 */ 1280 public boolean restorePicture(Bundle b, File src) { 1281 if (src == null || b == null) { 1282 return false; 1283 } 1284 if (src.exists()) { 1285 Picture p = null; 1286 try { 1287 final FileInputStream in = new FileInputStream(src); 1288 p = Picture.createFromStream(in); 1289 in.close(); 1290 } catch (FileNotFoundException e){ 1291 e.printStackTrace(); 1292 } catch (RuntimeException e) { 1293 e.printStackTrace(); 1294 } catch (IOException e) { 1295 e.printStackTrace(); 1296 } 1297 if (p != null) { 1298 int sx = b.getInt("scrollX", 0); 1299 int sy = b.getInt("scrollY", 0); 1300 float scale = b.getFloat("scale", 1.0f); 1301 mDrawHistory = true; 1302 mHistoryPicture = p; 1303 mScrollX = sx; 1304 mScrollY = sy; 1305 mHistoryWidth = Math.round(p.getWidth() * scale); 1306 mHistoryHeight = Math.round(p.getHeight() * scale); 1307 // as getWidth() / getHeight() of the view are not 1308 // available yet, set up mActualScale, so that when 1309 // onSizeChanged() is called, the rest will be set 1310 // correctly 1311 mActualScale = scale; 1312 mTextWrapScale = b.getFloat("textwrapScale", scale); 1313 mInZoomOverview = b.getBoolean("overview"); 1314 invalidate(); 1315 return true; 1316 } 1317 } 1318 return false; 1319 } 1320 1321 /** 1322 * Restore the state of this WebView from the given map used in 1323 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1324 * be called to restore the state of the WebView before using the object. If 1325 * it is called after the WebView has had a chance to build state (load 1326 * pages, create a back/forward list, etc.) there may be undesirable 1327 * side-effects. Please note that this method no longer restores the 1328 * display data for this WebView. See {@link #savePicture} and {@link 1329 * #restorePicture} for saving and restoring the display data. 1330 * @param inState The incoming Bundle of state. 1331 * @return The restored back/forward list or null if restoreState failed. 1332 * @see #savePicture 1333 * @see #restorePicture 1334 */ 1335 public WebBackForwardList restoreState(Bundle inState) { 1336 WebBackForwardList returnList = null; 1337 if (inState == null) { 1338 return returnList; 1339 } 1340 if (inState.containsKey("index") && inState.containsKey("history")) { 1341 mCertificate = SslCertificate.restoreState( 1342 inState.getBundle("certificate")); 1343 1344 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1345 final int index = inState.getInt("index"); 1346 // We can't use a clone of the list because we need to modify the 1347 // shared copy, so synchronize instead to prevent concurrent 1348 // modifications. 1349 synchronized (list) { 1350 final List<byte[]> history = 1351 (List<byte[]>) inState.getSerializable("history"); 1352 final int size = history.size(); 1353 // Check the index bounds so we don't crash in native code while 1354 // restoring the history index. 1355 if (index < 0 || index >= size) { 1356 return null; 1357 } 1358 for (int i = 0; i < size; i++) { 1359 byte[] data = history.remove(0); 1360 if (data == null) { 1361 // If we somehow have null data, we cannot reconstruct 1362 // the item and thus our history list cannot be rebuilt. 1363 return null; 1364 } 1365 WebHistoryItem item = new WebHistoryItem(data); 1366 list.addHistoryItem(item); 1367 } 1368 // Grab the most recent copy to return to the caller. 1369 returnList = copyBackForwardList(); 1370 // Update the copy to have the correct index. 1371 returnList.setCurrentIndex(index); 1372 } 1373 // Remove all pending messages because we are restoring previous 1374 // state. 1375 mWebViewCore.removeMessages(); 1376 // Send a restore state message. 1377 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1378 } 1379 return returnList; 1380 } 1381 1382 /** 1383 * Load the given url with the extra headers. 1384 * @param url The url of the resource to load. 1385 * @param extraHeaders The extra headers sent with this url. This should not 1386 * include the common headers like "user-agent". If it does, it 1387 * will be replaced by the intrinsic value of the WebView. 1388 */ 1389 public void loadUrl(String url, Map<String, String> extraHeaders) { 1390 switchOutDrawHistory(); 1391 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1392 arg.mUrl = url; 1393 arg.mExtraHeaders = extraHeaders; 1394 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1395 clearTextEntry(); 1396 } 1397 1398 /** 1399 * Load the given url. 1400 * @param url The url of the resource to load. 1401 */ 1402 public void loadUrl(String url) { 1403 if (url == null) { 1404 return; 1405 } 1406 loadUrl(url, null); 1407 } 1408 1409 /** 1410 * Load the url with postData using "POST" method into the WebView. If url 1411 * is not a network url, it will be loaded with {link 1412 * {@link #loadUrl(String)} instead. 1413 * 1414 * @param url The url of the resource to load. 1415 * @param postData The data will be passed to "POST" request. 1416 */ 1417 public void postUrl(String url, byte[] postData) { 1418 if (URLUtil.isNetworkUrl(url)) { 1419 switchOutDrawHistory(); 1420 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1421 arg.mUrl = url; 1422 arg.mPostData = postData; 1423 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1424 clearTextEntry(); 1425 } else { 1426 loadUrl(url); 1427 } 1428 } 1429 1430 /** 1431 * Load the given data into the WebView. This will load the data into 1432 * WebView using the data: scheme. Content loaded through this mechanism 1433 * does not have the ability to load content from the network. 1434 * @param data A String of data in the given encoding. 1435 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1436 * @param encoding The encoding of the data. i.e. utf-8, base64 1437 */ 1438 public void loadData(String data, String mimeType, String encoding) { 1439 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1440 } 1441 1442 /** 1443 * Load the given data into the WebView, use the provided URL as the base 1444 * URL for the content. The base URL is the URL that represents the page 1445 * that is loaded through this interface. As such, it is used for the 1446 * history entry and to resolve any relative URLs. The failUrl is used if 1447 * browser fails to load the data provided. If it is empty or null, and the 1448 * load fails, then no history entry is created. 1449 * <p> 1450 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1451 * files through "file:///android_asset/" for the sub resources is more 1452 * restricted. If you provide null or empty string as baseUrl, you won't be 1453 * able to access asset files. If the baseUrl is anything other than 1454 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1455 * sub resources. 1456 * 1457 * @param baseUrl Url to resolve relative paths with, if null defaults to 1458 * "about:blank" 1459 * @param data A String of data in the given encoding. 1460 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1461 * defaults to "text/html" 1462 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1463 * @param failUrl URL to use if the content fails to load or null. 1464 */ 1465 public void loadDataWithBaseURL(String baseUrl, String data, 1466 String mimeType, String encoding, String failUrl) { 1467 1468 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1469 loadData(data, mimeType, encoding); 1470 return; 1471 } 1472 switchOutDrawHistory(); 1473 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1474 arg.mBaseUrl = baseUrl; 1475 arg.mData = data; 1476 arg.mMimeType = mimeType; 1477 arg.mEncoding = encoding; 1478 arg.mFailUrl = failUrl; 1479 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1480 clearTextEntry(); 1481 } 1482 1483 /** 1484 * Stop the current load. 1485 */ 1486 public void stopLoading() { 1487 // TODO: should we clear all the messages in the queue before sending 1488 // STOP_LOADING? 1489 switchOutDrawHistory(); 1490 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1491 } 1492 1493 /** 1494 * Reload the current url. 1495 */ 1496 public void reload() { 1497 clearTextEntry(); 1498 switchOutDrawHistory(); 1499 mWebViewCore.sendMessage(EventHub.RELOAD); 1500 } 1501 1502 /** 1503 * Return true if this WebView has a back history item. 1504 * @return True iff this WebView has a back history item. 1505 */ 1506 public boolean canGoBack() { 1507 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1508 synchronized (l) { 1509 if (l.getClearPending()) { 1510 return false; 1511 } else { 1512 return l.getCurrentIndex() > 0; 1513 } 1514 } 1515 } 1516 1517 /** 1518 * Go back in the history of this WebView. 1519 */ 1520 public void goBack() { 1521 goBackOrForward(-1); 1522 } 1523 1524 /** 1525 * Return true if this WebView has a forward history item. 1526 * @return True iff this Webview has a forward history item. 1527 */ 1528 public boolean canGoForward() { 1529 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1530 synchronized (l) { 1531 if (l.getClearPending()) { 1532 return false; 1533 } else { 1534 return l.getCurrentIndex() < l.getSize() - 1; 1535 } 1536 } 1537 } 1538 1539 /** 1540 * Go forward in the history of this WebView. 1541 */ 1542 public void goForward() { 1543 goBackOrForward(1); 1544 } 1545 1546 /** 1547 * Return true if the page can go back or forward the given 1548 * number of steps. 1549 * @param steps The negative or positive number of steps to move the 1550 * history. 1551 */ 1552 public boolean canGoBackOrForward(int steps) { 1553 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1554 synchronized (l) { 1555 if (l.getClearPending()) { 1556 return false; 1557 } else { 1558 int newIndex = l.getCurrentIndex() + steps; 1559 return newIndex >= 0 && newIndex < l.getSize(); 1560 } 1561 } 1562 } 1563 1564 /** 1565 * Go to the history item that is the number of steps away from 1566 * the current item. Steps is negative if backward and positive 1567 * if forward. 1568 * @param steps The number of steps to take back or forward in the back 1569 * forward list. 1570 */ 1571 public void goBackOrForward(int steps) { 1572 goBackOrForward(steps, false); 1573 } 1574 1575 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1576 // every time we go back or forward, we want to reset the 1577 // WebView certificate: 1578 // if the new site is secure, we will reload it and get a 1579 // new certificate set; 1580 // if the new site is not secure, the certificate must be 1581 // null, and that will be the case 1582 mCertificate = null; 1583 if (steps != 0) { 1584 clearTextEntry(); 1585 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1586 ignoreSnapshot ? 1 : 0); 1587 } 1588 } 1589 1590 private boolean extendScroll(int y) { 1591 int finalY = mScroller.getFinalY(); 1592 int newY = pinLocY(finalY + y); 1593 if (newY == finalY) return false; 1594 mScroller.setFinalY(newY); 1595 mScroller.extendDuration(computeDuration(0, y)); 1596 return true; 1597 } 1598 1599 /** 1600 * Scroll the contents of the view up by half the view size 1601 * @param top true to jump to the top of the page 1602 * @return true if the page was scrolled 1603 */ 1604 public boolean pageUp(boolean top) { 1605 if (mNativeClass == 0) { 1606 return false; 1607 } 1608 nativeClearCursor(); // start next trackball movement from page edge 1609 if (top) { 1610 // go to the top of the document 1611 return pinScrollTo(mScrollX, 0, true, 0); 1612 } 1613 // Page up 1614 int h = getHeight(); 1615 int y; 1616 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1617 y = -h + PAGE_SCROLL_OVERLAP; 1618 } else { 1619 y = -h / 2; 1620 } 1621 mUserScroll = true; 1622 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1623 : extendScroll(y); 1624 } 1625 1626 /** 1627 * Scroll the contents of the view down by half the page size 1628 * @param bottom true to jump to bottom of page 1629 * @return true if the page was scrolled 1630 */ 1631 public boolean pageDown(boolean bottom) { 1632 if (mNativeClass == 0) { 1633 return false; 1634 } 1635 nativeClearCursor(); // start next trackball movement from page edge 1636 if (bottom) { 1637 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1638 } 1639 // Page down. 1640 int h = getHeight(); 1641 int y; 1642 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1643 y = h - PAGE_SCROLL_OVERLAP; 1644 } else { 1645 y = h / 2; 1646 } 1647 mUserScroll = true; 1648 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1649 : extendScroll(y); 1650 } 1651 1652 /** 1653 * Clear the view so that onDraw() will draw nothing but white background, 1654 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1655 */ 1656 public void clearView() { 1657 mContentWidth = 0; 1658 mContentHeight = 0; 1659 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1660 } 1661 1662 /** 1663 * Return a new picture that captures the current display of the webview. 1664 * This is a copy of the display, and will be unaffected if the webview 1665 * later loads a different URL. 1666 * 1667 * @return a picture containing the current contents of the view. Note this 1668 * picture is of the entire document, and is not restricted to the 1669 * bounds of the view. 1670 */ 1671 public Picture capturePicture() { 1672 if (null == mWebViewCore) return null; // check for out of memory tab 1673 return mWebViewCore.copyContentPicture(); 1674 } 1675 1676 /** 1677 * Return true if the browser is displaying a TextView for text input. 1678 */ 1679 private boolean inEditingMode() { 1680 return mWebTextView != null && mWebTextView.getParent() != null 1681 && mWebTextView.hasFocus(); 1682 } 1683 1684 private void clearTextEntry() { 1685 if (inEditingMode()) { 1686 mWebTextView.remove(); 1687 } 1688 } 1689 1690 /** 1691 * Return the current scale of the WebView 1692 * @return The current scale. 1693 */ 1694 public float getScale() { 1695 return mActualScale; 1696 } 1697 1698 /** 1699 * Set the initial scale for the WebView. 0 means default. If 1700 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1701 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1702 * WebView starts will this value as initial scale. 1703 * 1704 * @param scaleInPercent The initial scale in percent. 1705 */ 1706 public void setInitialScale(int scaleInPercent) { 1707 mInitialScaleInPercent = scaleInPercent; 1708 } 1709 1710 /** 1711 * Invoke the graphical zoom picker widget for this WebView. This will 1712 * result in the zoom widget appearing on the screen to control the zoom 1713 * level of this WebView. 1714 */ 1715 public void invokeZoomPicker() { 1716 if (!getSettings().supportZoom()) { 1717 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1718 return; 1719 } 1720 clearTextEntry(); 1721 if (getSettings().getBuiltInZoomControls()) { 1722 mZoomButtonsController.setVisible(true); 1723 } else { 1724 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1725 mPrivateHandler.postDelayed(mZoomControlRunnable, 1726 ZOOM_CONTROLS_TIMEOUT); 1727 } 1728 } 1729 1730 /** 1731 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1732 * is found and the anchor has a non-javascript url, the HitTestResult type 1733 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1734 * anchor does not have a url or if it is a javascript url, the type will 1735 * be UNKNOWN_TYPE and the url has to be retrieved through 1736 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1737 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1738 * the "extra" field. A type of 1739 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1740 * a child node. If a phone number is found, the HitTestResult type is set 1741 * to PHONE_TYPE and the phone number is set in the "extra" field of 1742 * HitTestResult. If a map address is found, the HitTestResult type is set 1743 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1744 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1745 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1746 * HitTestResult type is set to UNKNOWN_TYPE. 1747 */ 1748 public HitTestResult getHitTestResult() { 1749 if (mNativeClass == 0) { 1750 return null; 1751 } 1752 1753 HitTestResult result = new HitTestResult(); 1754 if (nativeHasCursorNode()) { 1755 if (nativeCursorIsTextInput()) { 1756 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1757 } else { 1758 String text = nativeCursorText(); 1759 if (text != null) { 1760 if (text.startsWith(SCHEME_TEL)) { 1761 result.setType(HitTestResult.PHONE_TYPE); 1762 result.setExtra(text.substring(SCHEME_TEL.length())); 1763 } else if (text.startsWith(SCHEME_MAILTO)) { 1764 result.setType(HitTestResult.EMAIL_TYPE); 1765 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1766 } else if (text.startsWith(SCHEME_GEO)) { 1767 result.setType(HitTestResult.GEO_TYPE); 1768 result.setExtra(URLDecoder.decode(text 1769 .substring(SCHEME_GEO.length()))); 1770 } else if (nativeCursorIsAnchor()) { 1771 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1772 result.setExtra(text); 1773 } 1774 } 1775 } 1776 } 1777 int type = result.getType(); 1778 if (type == HitTestResult.UNKNOWN_TYPE 1779 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1780 // Now check to see if it is an image. 1781 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1782 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1783 String text = nativeImageURI(contentX, contentY); 1784 if (text != null) { 1785 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1786 HitTestResult.IMAGE_TYPE : 1787 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1788 result.setExtra(text); 1789 } 1790 } 1791 return result; 1792 } 1793 1794 // Called by JNI when the DOM has changed the focus. Clear the focus so 1795 // that new keys will go to the newly focused field 1796 private void domChangedFocus() { 1797 if (inEditingMode()) { 1798 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 1799 } 1800 } 1801 /** 1802 * Request the href of an anchor element due to getFocusNodePath returning 1803 * "href." If hrefMsg is null, this method returns immediately and does not 1804 * dispatch hrefMsg to its target. 1805 * 1806 * @param hrefMsg This message will be dispatched with the result of the 1807 * request as the data member with "url" as key. The result can 1808 * be null. 1809 */ 1810 // FIXME: API change required to change the name of this function. We now 1811 // look at the cursor node, and not the focus node. Also, what is 1812 // getFocusNodePath? 1813 public void requestFocusNodeHref(Message hrefMsg) { 1814 if (hrefMsg == null || mNativeClass == 0) { 1815 return; 1816 } 1817 if (nativeCursorIsAnchor()) { 1818 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1819 nativeCursorFramePointer(), nativeCursorNodePointer(), 1820 hrefMsg); 1821 } 1822 } 1823 1824 /** 1825 * Request the url of the image last touched by the user. msg will be sent 1826 * to its target with a String representing the url as its object. 1827 * 1828 * @param msg This message will be dispatched with the result of the request 1829 * as the data member with "url" as key. The result can be null. 1830 */ 1831 public void requestImageRef(Message msg) { 1832 if (0 == mNativeClass) return; // client isn't initialized 1833 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1834 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1835 String ref = nativeImageURI(contentX, contentY); 1836 Bundle data = msg.getData(); 1837 data.putString("url", ref); 1838 msg.setData(data); 1839 msg.sendToTarget(); 1840 } 1841 1842 private static int pinLoc(int x, int viewMax, int docMax) { 1843// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1844 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1845 // pin the short document to the top/left of the screen 1846 x = 0; 1847// Log.d(LOGTAG, "--- center " + x); 1848 } else if (x < 0) { 1849 x = 0; 1850// Log.d(LOGTAG, "--- zero"); 1851 } else if (x + viewMax > docMax) { 1852 x = docMax - viewMax; 1853// Log.d(LOGTAG, "--- pin " + x); 1854 } 1855 return x; 1856 } 1857 1858 // Expects x in view coordinates 1859 private int pinLocX(int x) { 1860 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1861 } 1862 1863 // Expects y in view coordinates 1864 private int pinLocY(int y) { 1865 int titleH = getTitleHeight(); 1866 // if the titlebar is still visible, just pin against 0 1867 if (y <= titleH) { 1868 return Math.max(y, 0); 1869 } 1870 // convert to 0-based coordinate (subtract the title height) 1871 // pin(), and then add the title height back in 1872 return pinLoc(y - titleH, getViewHeight(), 1873 computeVerticalScrollRange()) + titleH; 1874 } 1875 1876 /** 1877 * A title bar which is embedded in this WebView, and scrolls along with it 1878 * vertically, but not horizontally. 1879 */ 1880 private View mTitleBar; 1881 1882 /** 1883 * Since we draw the title bar ourselves, we removed the shadow from the 1884 * browser's activity. We do want a shadow at the bottom of the title bar, 1885 * or at the top of the screen if the title bar is not visible. This 1886 * drawable serves that purpose. 1887 */ 1888 private Drawable mTitleShadow; 1889 1890 /** 1891 * Add or remove a title bar to be embedded into the WebView, and scroll 1892 * along with it vertically, while remaining in view horizontally. Pass 1893 * null to remove the title bar from the WebView, and return to drawing 1894 * the WebView normally without translating to account for the title bar. 1895 * @hide 1896 */ 1897 public void setEmbeddedTitleBar(View v) { 1898 if (mTitleBar == v) return; 1899 if (mTitleBar != null) { 1900 removeView(mTitleBar); 1901 } 1902 if (null != v) { 1903 addView(v, new AbsoluteLayout.LayoutParams( 1904 ViewGroup.LayoutParams.MATCH_PARENT, 1905 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1906 if (mTitleShadow == null) { 1907 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1908 com.android.internal.R.drawable.title_bar_shadow); 1909 } 1910 } 1911 mTitleBar = v; 1912 } 1913 1914 /** 1915 * Given a distance in view space, convert it to content space. Note: this 1916 * does not reflect translation, just scaling, so this should not be called 1917 * with coordinates, but should be called for dimensions like width or 1918 * height. 1919 */ 1920 private int viewToContentDimension(int d) { 1921 return Math.round(d * mInvActualScale); 1922 } 1923 1924 /** 1925 * Given an x coordinate in view space, convert it to content space. Also 1926 * may be used for absolute heights (such as for the WebTextView's 1927 * textSize, which is unaffected by the height of the title bar). 1928 */ 1929 /*package*/ int viewToContentX(int x) { 1930 return viewToContentDimension(x); 1931 } 1932 1933 /** 1934 * Given a y coordinate in view space, convert it to content space. 1935 * Takes into account the height of the title bar if there is one 1936 * embedded into the WebView. 1937 */ 1938 /*package*/ int viewToContentY(int y) { 1939 return viewToContentDimension(y - getTitleHeight()); 1940 } 1941 1942 /** 1943 * Given a distance in content space, convert it to view space. Note: this 1944 * does not reflect translation, just scaling, so this should not be called 1945 * with coordinates, but should be called for dimensions like width or 1946 * height. 1947 */ 1948 /*package*/ int contentToViewDimension(int d) { 1949 return Math.round(d * mActualScale); 1950 } 1951 1952 /** 1953 * Given an x coordinate in content space, convert it to view 1954 * space. 1955 */ 1956 /*package*/ int contentToViewX(int x) { 1957 return contentToViewDimension(x); 1958 } 1959 1960 /** 1961 * Given a y coordinate in content space, convert it to view 1962 * space. Takes into account the height of the title bar. 1963 */ 1964 /*package*/ int contentToViewY(int y) { 1965 return contentToViewDimension(y) + getTitleHeight(); 1966 } 1967 1968 private Rect contentToViewRect(Rect x) { 1969 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 1970 contentToViewX(x.right), contentToViewY(x.bottom)); 1971 } 1972 1973 /* To invalidate a rectangle in content coordinates, we need to transform 1974 the rect into view coordinates, so we can then call invalidate(...). 1975 1976 Normally, we would just call contentToView[XY](...), which eventually 1977 calls Math.round(coordinate * mActualScale). However, for invalidates, 1978 we need to account for the slop that occurs with antialiasing. To 1979 address that, we are a little more liberal in the size of the rect that 1980 we invalidate. 1981 1982 This liberal calculation calls floor() for the top/left, and ceil() for 1983 the bottom/right coordinates. This catches the possible extra pixels of 1984 antialiasing that we might have missed with just round(). 1985 */ 1986 1987 // Called by JNI to invalidate the View, given rectangle coordinates in 1988 // content space 1989 private void viewInvalidate(int l, int t, int r, int b) { 1990 final float scale = mActualScale; 1991 final int dy = getTitleHeight(); 1992 invalidate((int)Math.floor(l * scale), 1993 (int)Math.floor(t * scale) + dy, 1994 (int)Math.ceil(r * scale), 1995 (int)Math.ceil(b * scale) + dy); 1996 } 1997 1998 // Called by JNI to invalidate the View after a delay, given rectangle 1999 // coordinates in content space 2000 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2001 final float scale = mActualScale; 2002 final int dy = getTitleHeight(); 2003 postInvalidateDelayed(delay, 2004 (int)Math.floor(l * scale), 2005 (int)Math.floor(t * scale) + dy, 2006 (int)Math.ceil(r * scale), 2007 (int)Math.ceil(b * scale) + dy); 2008 } 2009 2010 private void invalidateContentRect(Rect r) { 2011 viewInvalidate(r.left, r.top, r.right, r.bottom); 2012 } 2013 2014 // stop the scroll animation, and don't let a subsequent fling add 2015 // to the existing velocity 2016 private void abortAnimation() { 2017 mScroller.abortAnimation(); 2018 mLastVelocity = 0; 2019 } 2020 2021 /* call from webcoreview.draw(), so we're still executing in the UI thread 2022 */ 2023 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2024 2025 // premature data from webkit, ignore 2026 if ((w | h) == 0) { 2027 return; 2028 } 2029 2030 // don't abort a scroll animation if we didn't change anything 2031 if (mContentWidth != w || mContentHeight != h) { 2032 // record new dimensions 2033 mContentWidth = w; 2034 mContentHeight = h; 2035 // If history Picture is drawn, don't update scroll. They will be 2036 // updated when we get out of that mode. 2037 if (!mDrawHistory) { 2038 // repin our scroll, taking into account the new content size 2039 int oldX = mScrollX; 2040 int oldY = mScrollY; 2041 mScrollX = pinLocX(mScrollX); 2042 mScrollY = pinLocY(mScrollY); 2043 if (oldX != mScrollX || oldY != mScrollY) { 2044 sendOurVisibleRect(); 2045 } 2046 if (!mScroller.isFinished()) { 2047 // We are in the middle of a scroll. Repin the final scroll 2048 // position. 2049 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2050 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2051 } 2052 } 2053 } 2054 contentSizeChanged(updateLayout); 2055 } 2056 2057 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 2058 boolean force) { 2059 if (scale < mMinZoomScale) { 2060 scale = mMinZoomScale; 2061 } else if (scale > mMaxZoomScale) { 2062 scale = mMaxZoomScale; 2063 } 2064 if (updateTextWrapScale) { 2065 mTextWrapScale = scale; 2066 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 2067 mLastHeightSent = 0; 2068 } 2069 if (scale != mActualScale || force) { 2070 if (mDrawHistory) { 2071 // If history Picture is drawn, don't update scroll. They will 2072 // be updated when we get out of that mode. 2073 if (scale != mActualScale && !mPreviewZoomOnly) { 2074 mCallbackProxy.onScaleChanged(mActualScale, scale); 2075 } 2076 mActualScale = scale; 2077 mInvActualScale = 1 / scale; 2078 sendViewSizeZoom(); 2079 } else { 2080 // update our scroll so we don't appear to jump 2081 // i.e. keep the center of the doc in the center of the view 2082 2083 int oldX = mScrollX; 2084 int oldY = mScrollY; 2085 float ratio = scale * mInvActualScale; // old inverse 2086 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2087 float sy = ratio * oldY + (ratio - 1) 2088 * (mZoomCenterY - getTitleHeight()); 2089 2090 // now update our new scale and inverse 2091 if (scale != mActualScale && !mPreviewZoomOnly) { 2092 mCallbackProxy.onScaleChanged(mActualScale, scale); 2093 } 2094 mActualScale = scale; 2095 mInvActualScale = 1 / scale; 2096 2097 // Scale all the child views 2098 mViewManager.scaleAll(); 2099 2100 // as we don't have animation for scaling, don't do animation 2101 // for scrolling, as it causes weird intermediate state 2102 // pinScrollTo(Math.round(sx), Math.round(sy)); 2103 mScrollX = pinLocX(Math.round(sx)); 2104 mScrollY = pinLocY(Math.round(sy)); 2105 2106 // update webkit 2107 sendViewSizeZoom(); 2108 sendOurVisibleRect(); 2109 } 2110 } 2111 } 2112 2113 // Used to avoid sending many visible rect messages. 2114 private Rect mLastVisibleRectSent; 2115 private Rect mLastGlobalRect; 2116 2117 private Rect sendOurVisibleRect() { 2118 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2119 2120 Rect rect = new Rect(); 2121 calcOurContentVisibleRect(rect); 2122 // Rect.equals() checks for null input. 2123 if (!rect.equals(mLastVisibleRectSent)) { 2124 Point pos = new Point(rect.left, rect.top); 2125 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2126 nativeMoveGeneration(), 0, pos); 2127 mLastVisibleRectSent = rect; 2128 } 2129 Rect globalRect = new Rect(); 2130 if (getGlobalVisibleRect(globalRect) 2131 && !globalRect.equals(mLastGlobalRect)) { 2132 if (DebugFlags.WEB_VIEW) { 2133 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2134 + globalRect.top + ",r=" + globalRect.right + ",b=" 2135 + globalRect.bottom); 2136 } 2137 // TODO: the global offset is only used by windowRect() 2138 // in ChromeClientAndroid ; other clients such as touch 2139 // and mouse events could return view + screen relative points. 2140 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2141 mLastGlobalRect = globalRect; 2142 } 2143 return rect; 2144 } 2145 2146 // Sets r to be the visible rectangle of our webview in view coordinates 2147 private void calcOurVisibleRect(Rect r) { 2148 Point p = new Point(); 2149 getGlobalVisibleRect(r, p); 2150 r.offset(-p.x, -p.y); 2151 if (mFindIsUp) { 2152 r.bottom -= mFindHeight; 2153 } 2154 } 2155 2156 // Sets r to be our visible rectangle in content coordinates 2157 private void calcOurContentVisibleRect(Rect r) { 2158 calcOurVisibleRect(r); 2159 r.left = viewToContentX(r.left); 2160 // viewToContentY will remove the total height of the title bar. Add 2161 // the visible height back in to account for the fact that if the title 2162 // bar is partially visible, the part of the visible rect which is 2163 // displaying our content is displaced by that amount. 2164 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2165 r.right = viewToContentX(r.right); 2166 r.bottom = viewToContentY(r.bottom); 2167 } 2168 2169 static class ViewSizeData { 2170 int mWidth; 2171 int mHeight; 2172 int mTextWrapWidth; 2173 int mAnchorX; 2174 int mAnchorY; 2175 float mScale; 2176 boolean mIgnoreHeight; 2177 } 2178 2179 /** 2180 * Compute unzoomed width and height, and if they differ from the last 2181 * values we sent, send them to webkit (to be used has new viewport) 2182 * 2183 * @return true if new values were sent 2184 */ 2185 private boolean sendViewSizeZoom() { 2186 if (mPreviewZoomOnly) return false; 2187 2188 int viewWidth = getViewWidth(); 2189 int newWidth = Math.round(viewWidth * mInvActualScale); 2190 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2191 /* 2192 * Because the native side may have already done a layout before the 2193 * View system was able to measure us, we have to send a height of 0 to 2194 * remove excess whitespace when we grow our width. This will trigger a 2195 * layout and a change in content size. This content size change will 2196 * mean that contentSizeChanged will either call this method directly or 2197 * indirectly from onSizeChanged. 2198 */ 2199 if (newWidth > mLastWidthSent && mWrapContent) { 2200 newHeight = 0; 2201 } 2202 // Avoid sending another message if the dimensions have not changed. 2203 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2204 ViewSizeData data = new ViewSizeData(); 2205 data.mWidth = newWidth; 2206 data.mHeight = newHeight; 2207 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2208 data.mScale = mActualScale; 2209 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2210 data.mAnchorX = mAnchorX; 2211 data.mAnchorY = mAnchorY; 2212 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2213 mLastWidthSent = newWidth; 2214 mLastHeightSent = newHeight; 2215 mAnchorX = mAnchorY = 0; 2216 return true; 2217 } 2218 return false; 2219 } 2220 2221 @Override 2222 protected int computeHorizontalScrollRange() { 2223 if (mDrawHistory) { 2224 return mHistoryWidth; 2225 } else { 2226 // to avoid rounding error caused unnecessary scrollbar, use floor 2227 return (int) Math.floor(mContentWidth * mActualScale); 2228 } 2229 } 2230 2231 @Override 2232 protected int computeVerticalScrollRange() { 2233 if (mDrawHistory) { 2234 return mHistoryHeight; 2235 } else { 2236 // to avoid rounding error caused unnecessary scrollbar, use floor 2237 return (int) Math.floor(mContentHeight * mActualScale); 2238 } 2239 } 2240 2241 @Override 2242 protected int computeVerticalScrollOffset() { 2243 return Math.max(mScrollY - getTitleHeight(), 0); 2244 } 2245 2246 @Override 2247 protected int computeVerticalScrollExtent() { 2248 return getViewHeight(); 2249 } 2250 2251 /** @hide */ 2252 @Override 2253 protected void onDrawVerticalScrollBar(Canvas canvas, 2254 Drawable scrollBar, 2255 int l, int t, int r, int b) { 2256 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2257 scrollBar.draw(canvas); 2258 } 2259 2260 /** 2261 * Get the url for the current page. This is not always the same as the url 2262 * passed to WebViewClient.onPageStarted because although the load for 2263 * that url has begun, the current page may not have changed. 2264 * @return The url for the current page. 2265 */ 2266 public String getUrl() { 2267 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2268 return h != null ? h.getUrl() : null; 2269 } 2270 2271 /** 2272 * Get the original url for the current page. This is not always the same 2273 * as the url passed to WebViewClient.onPageStarted because although the 2274 * load for that url has begun, the current page may not have changed. 2275 * Also, there may have been redirects resulting in a different url to that 2276 * originally requested. 2277 * @return The url that was originally requested for the current page. 2278 */ 2279 public String getOriginalUrl() { 2280 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2281 return h != null ? h.getOriginalUrl() : null; 2282 } 2283 2284 /** 2285 * Get the title for the current page. This is the title of the current page 2286 * until WebViewClient.onReceivedTitle is called. 2287 * @return The title for the current page. 2288 */ 2289 public String getTitle() { 2290 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2291 return h != null ? h.getTitle() : null; 2292 } 2293 2294 /** 2295 * Get the favicon for the current page. This is the favicon of the current 2296 * page until WebViewClient.onReceivedIcon is called. 2297 * @return The favicon for the current page. 2298 */ 2299 public Bitmap getFavicon() { 2300 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2301 return h != null ? h.getFavicon() : null; 2302 } 2303 2304 /** 2305 * Get the touch icon url for the apple-touch-icon <link> element. 2306 * @hide 2307 */ 2308 public String getTouchIconUrl() { 2309 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2310 return h != null ? h.getTouchIconUrl() : null; 2311 } 2312 2313 /** 2314 * Get the progress for the current page. 2315 * @return The progress for the current page between 0 and 100. 2316 */ 2317 public int getProgress() { 2318 return mCallbackProxy.getProgress(); 2319 } 2320 2321 /** 2322 * @return the height of the HTML content. 2323 */ 2324 public int getContentHeight() { 2325 return mContentHeight; 2326 } 2327 2328 /** 2329 * @return the width of the HTML content. 2330 * @hide 2331 */ 2332 public int getContentWidth() { 2333 return mContentWidth; 2334 } 2335 2336 /** 2337 * Pause all layout, parsing, and javascript timers for all webviews. This 2338 * is a global requests, not restricted to just this webview. This can be 2339 * useful if the application has been paused. 2340 */ 2341 public void pauseTimers() { 2342 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2343 } 2344 2345 /** 2346 * Resume all layout, parsing, and javascript timers for all webviews. 2347 * This will resume dispatching all timers. 2348 */ 2349 public void resumeTimers() { 2350 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2351 } 2352 2353 /** 2354 * Call this to pause any extra processing associated with this view and 2355 * its associated DOM/plugins/javascript/etc. For example, if the view is 2356 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2357 * network traffic. When the view is again "active", call onResume(). 2358 * 2359 * Note that this differs from pauseTimers(), which affects all views/DOMs 2360 * @hide 2361 */ 2362 public void onPause() { 2363 if (!mIsPaused) { 2364 mIsPaused = true; 2365 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2366 } 2367 } 2368 2369 /** 2370 * Call this to balanace a previous call to onPause() 2371 * @hide 2372 */ 2373 public void onResume() { 2374 if (mIsPaused) { 2375 mIsPaused = false; 2376 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2377 } 2378 } 2379 2380 /** 2381 * Returns true if the view is paused, meaning onPause() was called. Calling 2382 * onResume() sets the paused state back to false. 2383 * @hide 2384 */ 2385 public boolean isPaused() { 2386 return mIsPaused; 2387 } 2388 2389 /** 2390 * Call this to inform the view that memory is low so that it can 2391 * free any available memory. 2392 */ 2393 public void freeMemory() { 2394 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2395 } 2396 2397 /** 2398 * Clear the resource cache. Note that the cache is per-application, so 2399 * this will clear the cache for all WebViews used. 2400 * 2401 * @param includeDiskFiles If false, only the RAM cache is cleared. 2402 */ 2403 public void clearCache(boolean includeDiskFiles) { 2404 // Note: this really needs to be a static method as it clears cache for all 2405 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2406 // we can't make this static. 2407 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2408 includeDiskFiles ? 1 : 0, 0); 2409 } 2410 2411 /** 2412 * Make sure that clearing the form data removes the adapter from the 2413 * currently focused textfield if there is one. 2414 */ 2415 public void clearFormData() { 2416 if (inEditingMode()) { 2417 AutoCompleteAdapter adapter = null; 2418 mWebTextView.setAdapterCustom(adapter); 2419 } 2420 } 2421 2422 /** 2423 * Tell the WebView to clear its internal back/forward list. 2424 */ 2425 public void clearHistory() { 2426 mCallbackProxy.getBackForwardList().setClearPending(); 2427 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2428 } 2429 2430 /** 2431 * Clear the SSL preferences table stored in response to proceeding with SSL 2432 * certificate errors. 2433 */ 2434 public void clearSslPreferences() { 2435 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2436 } 2437 2438 /** 2439 * Return the WebBackForwardList for this WebView. This contains the 2440 * back/forward list for use in querying each item in the history stack. 2441 * This is a copy of the private WebBackForwardList so it contains only a 2442 * snapshot of the current state. Multiple calls to this method may return 2443 * different objects. The object returned from this method will not be 2444 * updated to reflect any new state. 2445 */ 2446 public WebBackForwardList copyBackForwardList() { 2447 return mCallbackProxy.getBackForwardList().clone(); 2448 } 2449 2450 /* 2451 * Highlight and scroll to the next occurance of String in findAll. 2452 * Wraps the page infinitely, and scrolls. Must be called after 2453 * calling findAll. 2454 * 2455 * @param forward Direction to search. 2456 */ 2457 public void findNext(boolean forward) { 2458 if (0 == mNativeClass) return; // client isn't initialized 2459 nativeFindNext(forward); 2460 } 2461 2462 /* 2463 * Find all instances of find on the page and highlight them. 2464 * @param find String to find. 2465 * @return int The number of occurances of the String "find" 2466 * that were found. 2467 */ 2468 public int findAll(String find) { 2469 if (0 == mNativeClass) return 0; // client isn't initialized 2470 if (mFindIsUp == false) { 2471 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2472 false); 2473 mFindIsUp = true; 2474 } 2475 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2476 invalidate(); 2477 mLastFind = find; 2478 return result; 2479 } 2480 2481 // Used to know whether the find dialog is open. Affects whether 2482 // or not we draw the highlights for matches. 2483 private boolean mFindIsUp; 2484 private int mFindHeight; 2485 // Keep track of the last string sent, so we can search again after an 2486 // orientation change or the dismissal of the soft keyboard. 2487 private String mLastFind; 2488 2489 /** 2490 * Return the first substring consisting of the address of a physical 2491 * location. Currently, only addresses in the United States are detected, 2492 * and consist of: 2493 * - a house number 2494 * - a street name 2495 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2496 * - a city name 2497 * - a state or territory, either spelled out or two-letter abbr. 2498 * - an optional 5 digit or 9 digit zip code. 2499 * 2500 * All names must be correctly capitalized, and the zip code, if present, 2501 * must be valid for the state. The street type must be a standard USPS 2502 * spelling or abbreviation. The state or territory must also be spelled 2503 * or abbreviated using USPS standards. The house number may not exceed 2504 * five digits. 2505 * @param addr The string to search for addresses. 2506 * 2507 * @return the address, or if no address is found, return null. 2508 */ 2509 public static String findAddress(String addr) { 2510 return findAddress(addr, false); 2511 } 2512 2513 /** 2514 * @hide 2515 * Return the first substring consisting of the address of a physical 2516 * location. Currently, only addresses in the United States are detected, 2517 * and consist of: 2518 * - a house number 2519 * - a street name 2520 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2521 * - a city name 2522 * - a state or territory, either spelled out or two-letter abbr. 2523 * - an optional 5 digit or 9 digit zip code. 2524 * 2525 * Names are optionally capitalized, and the zip code, if present, 2526 * must be valid for the state. The street type must be a standard USPS 2527 * spelling or abbreviation. The state or territory must also be spelled 2528 * or abbreviated using USPS standards. The house number may not exceed 2529 * five digits. 2530 * @param addr The string to search for addresses. 2531 * @param caseInsensitive addr Set to true to make search ignore case. 2532 * 2533 * @return the address, or if no address is found, return null. 2534 */ 2535 public static String findAddress(String addr, boolean caseInsensitive) { 2536 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2537 } 2538 2539 /* 2540 * Clear the highlighting surrounding text matches created by findAll. 2541 */ 2542 public void clearMatches() { 2543 if (mNativeClass == 0) 2544 return; 2545 if (mFindIsUp) { 2546 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2547 false); 2548 mFindIsUp = false; 2549 } 2550 nativeSetFindIsUp(); 2551 // Now that the dialog has been removed, ensure that we scroll to a 2552 // location that is not beyond the end of the page. 2553 pinScrollTo(mScrollX, mScrollY, false, 0); 2554 invalidate(); 2555 } 2556 2557 /** 2558 * @hide 2559 */ 2560 public void setFindDialogHeight(int height) { 2561 if (DebugFlags.WEB_VIEW) { 2562 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2563 } 2564 mFindHeight = height; 2565 } 2566 2567 /** 2568 * Query the document to see if it contains any image references. The 2569 * message object will be dispatched with arg1 being set to 1 if images 2570 * were found and 0 if the document does not reference any images. 2571 * @param response The message that will be dispatched with the result. 2572 */ 2573 public void documentHasImages(Message response) { 2574 if (response == null) { 2575 return; 2576 } 2577 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2578 } 2579 2580 @Override 2581 public void computeScroll() { 2582 if (mScroller.computeScrollOffset()) { 2583 int oldX = mScrollX; 2584 int oldY = mScrollY; 2585 mScrollX = mScroller.getCurrX(); 2586 mScrollY = mScroller.getCurrY(); 2587 postInvalidate(); // So we draw again 2588 if (oldX != mScrollX || oldY != mScrollY) { 2589 // as onScrollChanged() is not called, sendOurVisibleRect() 2590 // needs to be call explicitly 2591 sendOurVisibleRect(); 2592 } 2593 } else { 2594 super.computeScroll(); 2595 } 2596 } 2597 2598 private static int computeDuration(int dx, int dy) { 2599 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2600 int duration = distance * 1000 / STD_SPEED; 2601 return Math.min(duration, MAX_DURATION); 2602 } 2603 2604 // helper to pin the scrollBy parameters (already in view coordinates) 2605 // returns true if the scroll was changed 2606 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2607 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2608 } 2609 // helper to pin the scrollTo parameters (already in view coordinates) 2610 // returns true if the scroll was changed 2611 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2612 x = pinLocX(x); 2613 y = pinLocY(y); 2614 int dx = x - mScrollX; 2615 int dy = y - mScrollY; 2616 2617 if ((dx | dy) == 0) { 2618 return false; 2619 } 2620 if (animate) { 2621 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2622 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2623 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2624 awakenScrollBars(mScroller.getDuration()); 2625 invalidate(); 2626 } else { 2627 abortAnimation(); // just in case 2628 scrollTo(x, y); 2629 } 2630 return true; 2631 } 2632 2633 // Scale from content to view coordinates, and pin. 2634 // Also called by jni webview.cpp 2635 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2636 if (mDrawHistory) { 2637 // disallow WebView to change the scroll position as History Picture 2638 // is used in the view system. 2639 // TODO: as we switchOutDrawHistory when trackball or navigation 2640 // keys are hit, this should be safe. Right? 2641 return false; 2642 } 2643 cx = contentToViewDimension(cx); 2644 cy = contentToViewDimension(cy); 2645 if (mHeightCanMeasure) { 2646 // move our visible rect according to scroll request 2647 if (cy != 0) { 2648 Rect tempRect = new Rect(); 2649 calcOurVisibleRect(tempRect); 2650 tempRect.offset(cx, cy); 2651 requestRectangleOnScreen(tempRect); 2652 } 2653 // FIXME: We scroll horizontally no matter what because currently 2654 // ScrollView and ListView will not scroll horizontally. 2655 // FIXME: Why do we only scroll horizontally if there is no 2656 // vertical scroll? 2657// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2658 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2659 } else { 2660 return pinScrollBy(cx, cy, animate, 0); 2661 } 2662 } 2663 2664 /** 2665 * Called by CallbackProxy when the page finishes loading. 2666 * @param url The URL of the page which has finished loading. 2667 */ 2668 /* package */ void onPageFinished(String url) { 2669 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 2670 // If the user is now on a different page, or has scrolled the page 2671 // past the point where the title bar is offscreen, ignore the 2672 // scroll request. 2673 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 2674 && mScrollX == 0 && mScrollY == 0) { 2675 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 2676 SLIDE_TITLE_DURATION); 2677 } 2678 mPageThatNeedsToSlideTitleBarOffScreen = null; 2679 } 2680 } 2681 2682 /** 2683 * The URL of a page that sent a message to scroll the title bar off screen. 2684 * 2685 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 2686 * title bar off the screen. Sometimes, the scroll position is set before 2687 * the page finishes loading. Rather than scrolling while the page is still 2688 * loading, keep track of the URL and new scroll position so we can perform 2689 * the scroll once the page finishes loading. 2690 */ 2691 private String mPageThatNeedsToSlideTitleBarOffScreen; 2692 2693 /** 2694 * The destination Y scroll position to be used when the page finishes 2695 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 2696 */ 2697 private int mYDistanceToSlideTitleOffScreen; 2698 2699 // scale from content to view coordinates, and pin 2700 // return true if pin caused the final x/y different than the request cx/cy, 2701 // and a future scroll may reach the request cx/cy after our size has 2702 // changed 2703 // return false if the view scroll to the exact position as it is requested, 2704 // where negative numbers are taken to mean 0 2705 private boolean setContentScrollTo(int cx, int cy) { 2706 if (mDrawHistory) { 2707 // disallow WebView to change the scroll position as History Picture 2708 // is used in the view system. 2709 // One known case where this is called is that WebCore tries to 2710 // restore the scroll position. As history Picture already uses the 2711 // saved scroll position, it is ok to skip this. 2712 return false; 2713 } 2714 int vx; 2715 int vy; 2716 if ((cx | cy) == 0) { 2717 // If the page is being scrolled to (0,0), do not add in the title 2718 // bar's height, and simply scroll to (0,0). (The only other work 2719 // in contentToView_ is to multiply, so this would not change 0.) 2720 vx = 0; 2721 vy = 0; 2722 } else { 2723 vx = contentToViewX(cx); 2724 vy = contentToViewY(cy); 2725 } 2726// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2727// vx + " " + vy + "]"); 2728 // Some mobile sites attempt to scroll the title bar off the page by 2729 // scrolling to (0,1). If we are at the top left corner of the 2730 // page, assume this is an attempt to scroll off the title bar, and 2731 // animate the title bar off screen slowly enough that the user can see 2732 // it. 2733 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 2734 && mTitleBar != null) { 2735 // FIXME: 100 should be defined somewhere as our max progress. 2736 if (getProgress() < 100) { 2737 // Wait to scroll the title bar off screen until the page has 2738 // finished loading. Keep track of the URL and the destination 2739 // Y position 2740 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 2741 mYDistanceToSlideTitleOffScreen = vy; 2742 } else { 2743 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2744 } 2745 // Since we are animating, we have not yet reached the desired 2746 // scroll position. Do not return true to request another attempt 2747 return false; 2748 } 2749 pinScrollTo(vx, vy, false, 0); 2750 // If the request was to scroll to a negative coordinate, treat it as if 2751 // it was a request to scroll to 0 2752 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2753 return true; 2754 } else { 2755 return false; 2756 } 2757 } 2758 2759 // scale from content to view coordinates, and pin 2760 private void spawnContentScrollTo(int cx, int cy) { 2761 if (mDrawHistory) { 2762 // disallow WebView to change the scroll position as History Picture 2763 // is used in the view system. 2764 return; 2765 } 2766 int vx = contentToViewX(cx); 2767 int vy = contentToViewY(cy); 2768 pinScrollTo(vx, vy, true, 0); 2769 } 2770 2771 /** 2772 * These are from webkit, and are in content coordinate system (unzoomed) 2773 */ 2774 private void contentSizeChanged(boolean updateLayout) { 2775 // suppress 0,0 since we usually see real dimensions soon after 2776 // this avoids drawing the prev content in a funny place. If we find a 2777 // way to consolidate these notifications, this check may become 2778 // obsolete 2779 if ((mContentWidth | mContentHeight) == 0) { 2780 return; 2781 } 2782 2783 if (mHeightCanMeasure) { 2784 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2785 || updateLayout) { 2786 requestLayout(); 2787 } 2788 } else if (mWidthCanMeasure) { 2789 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2790 || updateLayout) { 2791 requestLayout(); 2792 } 2793 } else { 2794 // If we don't request a layout, try to send our view size to the 2795 // native side to ensure that WebCore has the correct dimensions. 2796 sendViewSizeZoom(); 2797 } 2798 } 2799 2800 /** 2801 * Set the WebViewClient that will receive various notifications and 2802 * requests. This will replace the current handler. 2803 * @param client An implementation of WebViewClient. 2804 */ 2805 public void setWebViewClient(WebViewClient client) { 2806 mCallbackProxy.setWebViewClient(client); 2807 } 2808 2809 /** 2810 * Gets the WebViewClient 2811 * @return the current WebViewClient instance. 2812 * 2813 *@hide pending API council approval. 2814 */ 2815 public WebViewClient getWebViewClient() { 2816 return mCallbackProxy.getWebViewClient(); 2817 } 2818 2819 /** 2820 * Register the interface to be used when content can not be handled by 2821 * the rendering engine, and should be downloaded instead. This will replace 2822 * the current handler. 2823 * @param listener An implementation of DownloadListener. 2824 */ 2825 public void setDownloadListener(DownloadListener listener) { 2826 mCallbackProxy.setDownloadListener(listener); 2827 } 2828 2829 /** 2830 * Set the chrome handler. This is an implementation of WebChromeClient for 2831 * use in handling Javascript dialogs, favicons, titles, and the progress. 2832 * This will replace the current handler. 2833 * @param client An implementation of WebChromeClient. 2834 */ 2835 public void setWebChromeClient(WebChromeClient client) { 2836 mCallbackProxy.setWebChromeClient(client); 2837 } 2838 2839 /** 2840 * Gets the chrome handler. 2841 * @return the current WebChromeClient instance. 2842 * 2843 * @hide API council approval. 2844 */ 2845 public WebChromeClient getWebChromeClient() { 2846 return mCallbackProxy.getWebChromeClient(); 2847 } 2848 2849 /** 2850 * Set the Picture listener. This is an interface used to receive 2851 * notifications of a new Picture. 2852 * @param listener An implementation of WebView.PictureListener. 2853 */ 2854 public void setPictureListener(PictureListener listener) { 2855 mPictureListener = listener; 2856 } 2857 2858 /** 2859 * {@hide} 2860 */ 2861 /* FIXME: Debug only! Remove for SDK! */ 2862 public void externalRepresentation(Message callback) { 2863 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2864 } 2865 2866 /** 2867 * {@hide} 2868 */ 2869 /* FIXME: Debug only! Remove for SDK! */ 2870 public void documentAsText(Message callback) { 2871 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2872 } 2873 2874 /** 2875 * Use this function to bind an object to Javascript so that the 2876 * methods can be accessed from Javascript. 2877 * <p><strong>IMPORTANT:</strong> 2878 * <ul> 2879 * <li> Using addJavascriptInterface() allows JavaScript to control your 2880 * application. This can be a very useful feature or a dangerous security 2881 * issue. When the HTML in the WebView is untrustworthy (for example, part 2882 * or all of the HTML is provided by some person or process), then an 2883 * attacker could inject HTML that will execute your code and possibly any 2884 * code of the attacker's choosing.<br> 2885 * Do not use addJavascriptInterface() unless all of the HTML in this 2886 * WebView was written by you.</li> 2887 * <li> The Java object that is bound runs in another thread and not in 2888 * the thread that it was constructed in.</li> 2889 * </ul></p> 2890 * @param obj The class instance to bind to Javascript 2891 * @param interfaceName The name to used to expose the class in Javascript 2892 */ 2893 public void addJavascriptInterface(Object obj, String interfaceName) { 2894 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2895 arg.mObject = obj; 2896 arg.mInterfaceName = interfaceName; 2897 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2898 } 2899 2900 /** 2901 * Return the WebSettings object used to control the settings for this 2902 * WebView. 2903 * @return A WebSettings object that can be used to control this WebView's 2904 * settings. 2905 */ 2906 public WebSettings getSettings() { 2907 return mWebViewCore.getSettings(); 2908 } 2909 2910 /** 2911 * Return the list of currently loaded plugins. 2912 * @return The list of currently loaded plugins. 2913 * 2914 * @deprecated This was used for Gears, which has been deprecated. 2915 */ 2916 @Deprecated 2917 public static synchronized PluginList getPluginList() { 2918 return new PluginList(); 2919 } 2920 2921 /** 2922 * @deprecated This was used for Gears, which has been deprecated. 2923 */ 2924 @Deprecated 2925 public void refreshPlugins(boolean reloadOpenPages) { } 2926 2927 //------------------------------------------------------------------------- 2928 // Override View methods 2929 //------------------------------------------------------------------------- 2930 2931 @Override 2932 protected void finalize() throws Throwable { 2933 try { 2934 destroy(); 2935 } finally { 2936 super.finalize(); 2937 } 2938 } 2939 2940 @Override 2941 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 2942 if (child == mTitleBar) { 2943 // When drawing the title bar, move it horizontally to always show 2944 // at the top of the WebView. 2945 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 2946 } 2947 return super.drawChild(canvas, child, drawingTime); 2948 } 2949 2950 private void drawContent(Canvas canvas) { 2951 // Update the buttons in the picture, so when we draw the picture 2952 // to the screen, they are in the correct state. 2953 // Tell the native side if user is a) touching the screen, 2954 // b) pressing the trackball down, or c) pressing the enter key 2955 // If the cursor is on a button, we need to draw it in the pressed 2956 // state. 2957 // If mNativeClass is 0, we should not reach here, so we do not 2958 // need to check it again. 2959 nativeRecordButtons(hasFocus() && hasWindowFocus(), 2960 mTouchMode == TOUCH_SHORTPRESS_START_MODE 2961 || mTrackballDown || mGotCenterDown, false); 2962 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 2963 } 2964 2965 @Override 2966 protected void onDraw(Canvas canvas) { 2967 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 2968 if (mNativeClass == 0) { 2969 return; 2970 } 2971 2972 int saveCount = canvas.save(); 2973 if (mTitleBar != null) { 2974 canvas.translate(0, (int) mTitleBar.getHeight()); 2975 } 2976 if (mDragTrackerHandler == null) { 2977 drawContent(canvas); 2978 } else { 2979 if (!mDragTrackerHandler.draw(canvas)) { 2980 // sometimes the tracker doesn't draw, even though its active 2981 drawContent(canvas); 2982 } 2983 if (mDragTrackerHandler.isFinished()) { 2984 mDragTrackerHandler = null; 2985 } 2986 } 2987 canvas.restoreToCount(saveCount); 2988 2989 // Now draw the shadow. 2990 if (mTitleBar != null) { 2991 int y = mScrollY + getVisibleTitleHeight(); 2992 int height = (int) (5f * getContext().getResources() 2993 .getDisplayMetrics().density); 2994 mTitleShadow.setBounds(mScrollX, y, mScrollX + getWidth(), 2995 y + height); 2996 mTitleShadow.draw(canvas); 2997 } 2998 if (AUTO_REDRAW_HACK && mAutoRedraw) { 2999 invalidate(); 3000 } 3001 mWebViewCore.signalRepaintDone(); 3002 } 3003 3004 @Override 3005 public void setLayoutParams(ViewGroup.LayoutParams params) { 3006 if (params.height == LayoutParams.WRAP_CONTENT) { 3007 mWrapContent = true; 3008 } 3009 super.setLayoutParams(params); 3010 } 3011 3012 @Override 3013 public boolean performLongClick() { 3014 // performLongClick() is the result of a delayed message. If we switch 3015 // to windows overview, the WebView will be temporarily removed from the 3016 // view system. In that case, do nothing. 3017 if (getParent() == null) return false; 3018 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3019 // Send the click so that the textfield is in focus 3020 centerKeyPressOnTextField(); 3021 rebuildWebTextView(); 3022 } 3023 if (inEditingMode()) { 3024 return mWebTextView.performLongClick(); 3025 } else { 3026 return super.performLongClick(); 3027 } 3028 } 3029 3030 boolean inAnimateZoom() { 3031 return mZoomScale != 0; 3032 } 3033 3034 /** 3035 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3036 * has changed. This is especially important for password fields, which are 3037 * drawn by the WebTextView, since it conveys more information than what 3038 * webkit draws. Thus we need to reposition it to show in the correct 3039 * place. 3040 */ 3041 private boolean mNeedToAdjustWebTextView; 3042 3043 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3044 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3045 Rect vBox = contentToViewRect(contentBounds); 3046 Rect visibleRect = new Rect(); 3047 calcOurVisibleRect(visibleRect); 3048 // The IME may have shown, resulting in the textfield being offscreen. 3049 // If so, the textfield will be scrolled on screen, so treat it as 3050 // though it is on screen. If it is on screen, place the WebTextView in 3051 // its new place, accounting for our new scroll/zoom values. 3052 InputMethodManager imm = InputMethodManager.peekInstance(); 3053 if ((imm != null && imm.isActive(mWebTextView)) 3054 || (allowIntersect ? Rect.intersects(visibleRect, vBox) 3055 : visibleRect.contains(vBox))) { 3056 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3057 vBox.height()); 3058 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3059 contentToViewDimension( 3060 nativeFocusCandidateTextSize())); 3061 return true; 3062 } else { 3063 // The textfield is now off screen. The user probably 3064 // was not zooming to see the textfield better. Remove 3065 // the WebTextView. If the user types a key, and the 3066 // textfield is still in focus, we will reconstruct 3067 // the WebTextView and scroll it back on screen. 3068 mWebTextView.remove(); 3069 return false; 3070 } 3071 } 3072 3073 private void drawLayers(Canvas canvas) { 3074 if (mRootLayer != 0) { 3075 int scrollY = computeVerticalScrollOffset(); 3076 int viewHeight = getHeight() - getVisibleTitleHeight(); 3077 3078 nativeDrawLayers(mRootLayer, mScrollX, scrollY, 3079 getWidth(), viewHeight, 3080 mActualScale, canvas); 3081 } 3082 } 3083 3084 private void drawCoreAndCursorRing(Canvas canvas, int color, 3085 boolean drawCursorRing) { 3086 if (mDrawHistory) { 3087 canvas.scale(mActualScale, mActualScale); 3088 canvas.drawPicture(mHistoryPicture); 3089 drawLayers(canvas); 3090 return; 3091 } 3092 3093 boolean animateZoom = mZoomScale != 0; 3094 boolean animateScroll = (!mScroller.isFinished() 3095 || mVelocityTracker != null) 3096 && (mTouchMode != TOUCH_DRAG_MODE || 3097 mHeldMotionless != MOTIONLESS_TRUE); 3098 if (mTouchMode == TOUCH_DRAG_MODE) { 3099 if (mHeldMotionless == MOTIONLESS_PENDING) { 3100 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3101 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3102 mHeldMotionless = MOTIONLESS_FALSE; 3103 } 3104 if (mHeldMotionless == MOTIONLESS_FALSE) { 3105 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3106 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3107 mHeldMotionless = MOTIONLESS_PENDING; 3108 } 3109 } 3110 if (animateZoom) { 3111 float zoomScale; 3112 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 3113 if (interval < ZOOM_ANIMATION_LENGTH) { 3114 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 3115 zoomScale = 1.0f / (mInvInitialZoomScale 3116 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 3117 invalidate(); 3118 } else { 3119 zoomScale = mZoomScale; 3120 // set mZoomScale to be 0 as we have done animation 3121 mZoomScale = 0; 3122 WebViewCore.resumeUpdatePicture(mWebViewCore); 3123 // call invalidate() again to draw with the final filters 3124 invalidate(); 3125 if (mNeedToAdjustWebTextView) { 3126 mNeedToAdjustWebTextView = false; 3127 if (didUpdateTextViewBounds(false) 3128 && nativeFocusCandidateIsPassword()) { 3129 // If it is a password field, start drawing the 3130 // WebTextView once again. 3131 mWebTextView.setInPassword(true); 3132 } 3133 } 3134 } 3135 // calculate the intermediate scroll position. As we need to use 3136 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 3137 float scale = zoomScale * mInvInitialZoomScale; 3138 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 3139 - mZoomCenterX); 3140 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 3141 * zoomScale)) + mScrollX; 3142 int titleHeight = getTitleHeight(); 3143 int ty = Math.round(scale 3144 * (mInitialScrollY + mZoomCenterY - titleHeight) 3145 - (mZoomCenterY - titleHeight)); 3146 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 3147 - titleHeight, getViewHeight(), Math.round(mContentHeight 3148 * zoomScale)) + titleHeight) + mScrollY; 3149 canvas.translate(tx, ty); 3150 canvas.scale(zoomScale, zoomScale); 3151 if (inEditingMode() && !mNeedToAdjustWebTextView 3152 && mZoomScale != 0) { 3153 // The WebTextView is up. Keep track of this so we can adjust 3154 // its size and placement when we finish zooming 3155 mNeedToAdjustWebTextView = true; 3156 // If it is in password mode, turn it off so it does not draw 3157 // misplaced. 3158 if (nativeFocusCandidateIsPassword()) { 3159 mWebTextView.setInPassword(false); 3160 } 3161 } 3162 } else { 3163 canvas.scale(mActualScale, mActualScale); 3164 } 3165 3166 mWebViewCore.drawContentPicture(canvas, color, 3167 (animateZoom || mPreviewZoomOnly), animateScroll); 3168 3169 drawLayers(canvas); 3170 3171 if (mNativeClass == 0) return; 3172 if (mShiftIsPressed && !(animateZoom || mPreviewZoomOnly)) { 3173 if (mTouchSelection || mExtendSelection) { 3174 nativeDrawSelectionRegion(canvas); 3175 } 3176 if (!mTouchSelection) { 3177 nativeDrawSelectionPointer(canvas, mInvActualScale, mSelectX, 3178 mSelectY - getTitleHeight(), mExtendSelection); 3179 } 3180 } else if (drawCursorRing) { 3181 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3182 mTouchMode = TOUCH_SHORTPRESS_MODE; 3183 HitTestResult hitTest = getHitTestResult(); 3184 if (mPreventLongPress || (hitTest != null && 3185 hitTest.mType != HitTestResult.UNKNOWN_TYPE)) { 3186 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3187 .obtainMessage(SWITCH_TO_LONGPRESS), 3188 LONG_PRESS_TIMEOUT); 3189 } 3190 } 3191 nativeDrawCursorRing(canvas); 3192 } 3193 // When the FindDialog is up, only draw the matches if we are not in 3194 // the process of scrolling them into view. 3195 if (mFindIsUp && !animateScroll) { 3196 nativeDrawMatches(canvas); 3197 } 3198 if (mFocusSizeChanged) { 3199 mFocusSizeChanged = false; 3200 // If we are zooming, this will get handled above, when the zoom 3201 // finishes. We also do not need to do this unless the WebTextView 3202 // is showing. 3203 if (!animateZoom && inEditingMode()) { 3204 didUpdateTextViewBounds(true); 3205 } 3206 } 3207 } 3208 3209 // draw history 3210 private boolean mDrawHistory = false; 3211 private Picture mHistoryPicture = null; 3212 private int mHistoryWidth = 0; 3213 private int mHistoryHeight = 0; 3214 3215 // Only check the flag, can be called from WebCore thread 3216 boolean drawHistory() { 3217 return mDrawHistory; 3218 } 3219 3220 // Should only be called in UI thread 3221 void switchOutDrawHistory() { 3222 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3223 if (mDrawHistory && mWebViewCore.pictureReady()) { 3224 mDrawHistory = false; 3225 invalidate(); 3226 int oldScrollX = mScrollX; 3227 int oldScrollY = mScrollY; 3228 mScrollX = pinLocX(mScrollX); 3229 mScrollY = pinLocY(mScrollY); 3230 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3231 mUserScroll = false; 3232 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3233 oldScrollY); 3234 } 3235 sendOurVisibleRect(); 3236 } 3237 } 3238 3239 WebViewCore.CursorData cursorData() { 3240 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3241 result.mMoveGeneration = nativeMoveGeneration(); 3242 result.mFrame = nativeCursorFramePointer(); 3243 Point position = nativeCursorPosition(); 3244 result.mX = position.x; 3245 result.mY = position.y; 3246 return result; 3247 } 3248 3249 /** 3250 * Delete text from start to end in the focused textfield. If there is no 3251 * focus, or if start == end, silently fail. If start and end are out of 3252 * order, swap them. 3253 * @param start Beginning of selection to delete. 3254 * @param end End of selection to delete. 3255 */ 3256 /* package */ void deleteSelection(int start, int end) { 3257 mTextGeneration++; 3258 WebViewCore.TextSelectionData data 3259 = new WebViewCore.TextSelectionData(start, end); 3260 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3261 data); 3262 } 3263 3264 /** 3265 * Set the selection to (start, end) in the focused textfield. If start and 3266 * end are out of order, swap them. 3267 * @param start Beginning of selection. 3268 * @param end End of selection. 3269 */ 3270 /* package */ void setSelection(int start, int end) { 3271 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3272 } 3273 3274 @Override 3275 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3276 InputConnection connection = super.onCreateInputConnection(outAttrs); 3277 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3278 return connection; 3279 } 3280 3281 /** 3282 * Called in response to a message from webkit telling us that the soft 3283 * keyboard should be launched. 3284 */ 3285 private void displaySoftKeyboard(boolean isTextView) { 3286 InputMethodManager imm = (InputMethodManager) 3287 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3288 3289 if (isTextView) { 3290 rebuildWebTextView(); 3291 if (!inEditingMode()) return; 3292 imm.showSoftInput(mWebTextView, 0); 3293 // bring it back to the default scale so that user can enter text 3294 if (mActualScale < mDefaultScale) { 3295 mInZoomOverview = false; 3296 mZoomCenterX = mLastTouchX; 3297 mZoomCenterY = mLastTouchY; 3298 // do not change text wrap scale so that there is no reflow 3299 setNewZoomScale(mDefaultScale, false, false); 3300 didUpdateTextViewBounds(true); 3301 } 3302 } 3303 else { // used by plugins 3304 imm.showSoftInput(this, 0); 3305 } 3306 } 3307 3308 // Called by WebKit to instruct the UI to hide the keyboard 3309 private void hideSoftKeyboard() { 3310 InputMethodManager imm = (InputMethodManager) 3311 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3312 3313 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3314 } 3315 3316 /* 3317 * This method checks the current focus and cursor and potentially rebuilds 3318 * mWebTextView to have the appropriate properties, such as password, 3319 * multiline, and what text it contains. It also removes it if necessary. 3320 */ 3321 /* package */ void rebuildWebTextView() { 3322 // If the WebView does not have focus, do nothing until it gains focus. 3323 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3324 return; 3325 } 3326 boolean alreadyThere = inEditingMode(); 3327 // inEditingMode can only return true if mWebTextView is non-null, 3328 // so we can safely call remove() if (alreadyThere) 3329 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3330 if (alreadyThere) { 3331 mWebTextView.remove(); 3332 } 3333 return; 3334 } 3335 // At this point, we know we have found an input field, so go ahead 3336 // and create the WebTextView if necessary. 3337 if (mWebTextView == null) { 3338 mWebTextView = new WebTextView(mContext, WebView.this); 3339 // Initialize our generation number. 3340 mTextGeneration = 0; 3341 } 3342 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3343 contentToViewDimension(nativeFocusCandidateTextSize())); 3344 Rect visibleRect = new Rect(); 3345 calcOurContentVisibleRect(visibleRect); 3346 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3347 // should be in content coordinates. 3348 Rect bounds = nativeFocusCandidateNodeBounds(); 3349 Rect vBox = contentToViewRect(bounds); 3350 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3351 if (!Rect.intersects(bounds, visibleRect)) { 3352 mWebTextView.bringIntoView(); 3353 } 3354 String text = nativeFocusCandidateText(); 3355 int nodePointer = nativeFocusCandidatePointer(); 3356 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3357 // It is possible that we have the same textfield, but it has moved, 3358 // i.e. In the case of opening/closing the screen. 3359 // In that case, we need to set the dimensions, but not the other 3360 // aspects. 3361 // If the text has been changed by webkit, update it. However, if 3362 // there has been more UI text input, ignore it. We will receive 3363 // another update when that text is recognized. 3364 if (text != null && !text.equals(mWebTextView.getText().toString()) 3365 && nativeTextGeneration() == mTextGeneration) { 3366 mWebTextView.setTextAndKeepSelection(text); 3367 } 3368 } else { 3369 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3370 Gravity.RIGHT : Gravity.NO_GRAVITY); 3371 // This needs to be called before setType, which may call 3372 // requestFormData, and it needs to have the correct nodePointer. 3373 mWebTextView.setNodePointer(nodePointer); 3374 mWebTextView.setType(nativeFocusCandidateType()); 3375 if (null == text) { 3376 if (DebugFlags.WEB_VIEW) { 3377 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3378 } 3379 text = ""; 3380 } 3381 mWebTextView.setTextAndKeepSelection(text); 3382 } 3383 mWebTextView.requestFocus(); 3384 } 3385 3386 /** 3387 * Called by WebTextView to find saved form data associated with the 3388 * textfield 3389 * @param name Name of the textfield. 3390 * @param nodePointer Pointer to the node of the textfield, so it can be 3391 * compared to the currently focused textfield when the data is 3392 * retrieved. 3393 */ 3394 /* package */ void requestFormData(String name, int nodePointer) { 3395 if (mWebViewCore.getSettings().getSaveFormData()) { 3396 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3397 update.arg1 = nodePointer; 3398 RequestFormData updater = new RequestFormData(name, getUrl(), 3399 update); 3400 Thread t = new Thread(updater); 3401 t.start(); 3402 } 3403 } 3404 3405 /** 3406 * Pass a message to find out the <label> associated with the <input> 3407 * identified by nodePointer 3408 * @param framePointer Pointer to the frame containing the <input> node 3409 * @param nodePointer Pointer to the node for which a <label> is desired. 3410 */ 3411 /* package */ void requestLabel(int framePointer, int nodePointer) { 3412 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3413 nodePointer); 3414 } 3415 3416 /* 3417 * This class runs the layers animations in their own thread, 3418 * so that we do not slow down the UI. 3419 */ 3420 private class EvaluateLayersAnimations extends Thread { 3421 boolean mRunning = true; 3422 // delay corresponds to 40fps, no need to go faster. 3423 int mDelay = 25; // in ms 3424 public void run() { 3425 while (mRunning) { 3426 if (mLayersHaveAnimations && mRootLayer != 0) { 3427 // updates is a C++ pointer to a Vector of AnimationValues 3428 int updates = nativeEvaluateLayersAnimations(mRootLayer); 3429 if (updates == 0) { 3430 mRunning = false; 3431 } 3432 Message.obtain(mPrivateHandler, 3433 WebView.IMMEDIATE_REPAINT_MSG_ID, 3434 updates, 0).sendToTarget(); 3435 } else { 3436 mRunning = false; 3437 } 3438 try { 3439 Thread.currentThread().sleep(mDelay); 3440 } catch (InterruptedException e) { 3441 mRunning = false; 3442 } 3443 } 3444 } 3445 public void cancel() { 3446 mRunning = false; 3447 } 3448 } 3449 3450 /* 3451 * This class requests an Adapter for the WebTextView which shows past 3452 * entries stored in the database. It is a Runnable so that it can be done 3453 * in its own thread, without slowing down the UI. 3454 */ 3455 private class RequestFormData implements Runnable { 3456 private String mName; 3457 private String mUrl; 3458 private Message mUpdateMessage; 3459 3460 public RequestFormData(String name, String url, Message msg) { 3461 mName = name; 3462 mUrl = url; 3463 mUpdateMessage = msg; 3464 } 3465 3466 public void run() { 3467 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3468 if (pastEntries.size() > 0) { 3469 AutoCompleteAdapter adapter = new 3470 AutoCompleteAdapter(mContext, pastEntries); 3471 mUpdateMessage.obj = adapter; 3472 mUpdateMessage.sendToTarget(); 3473 } 3474 } 3475 } 3476 3477 /** 3478 * Dump the display tree to "/sdcard/displayTree.txt" 3479 * 3480 * @hide debug only 3481 */ 3482 public void dumpDisplayTree() { 3483 nativeDumpDisplayTree(getUrl()); 3484 } 3485 3486 /** 3487 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 3488 * "/sdcard/domTree.txt" 3489 * 3490 * @hide debug only 3491 */ 3492 public void dumpDomTree(boolean toFile) { 3493 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 3494 } 3495 3496 /** 3497 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 3498 * to "/sdcard/renderTree.txt" 3499 * 3500 * @hide debug only 3501 */ 3502 public void dumpRenderTree(boolean toFile) { 3503 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 3504 } 3505 3506 /** 3507 * Dump the V8 counters to standard output. 3508 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 3509 * true. Otherwise, this will do nothing. 3510 * 3511 * @hide debug only 3512 */ 3513 public void dumpV8Counters() { 3514 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 3515 } 3516 3517 // This is used to determine long press with the center key. Does not 3518 // affect long press with the trackball/touch. 3519 private boolean mGotCenterDown = false; 3520 3521 @Override 3522 public boolean onKeyDown(int keyCode, KeyEvent event) { 3523 if (DebugFlags.WEB_VIEW) { 3524 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3525 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3526 } 3527 3528 if (mNativeClass == 0) { 3529 return false; 3530 } 3531 3532 // do this hack up front, so it always works, regardless of touch-mode 3533 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3534 mAutoRedraw = !mAutoRedraw; 3535 if (mAutoRedraw) { 3536 invalidate(); 3537 } 3538 return true; 3539 } 3540 3541 // Bubble up the key event if 3542 // 1. it is a system key; or 3543 // 2. the host application wants to handle it; 3544 if (event.isSystem() 3545 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3546 return false; 3547 } 3548 3549 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3550 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3551 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3552 setUpSelectXY(); 3553 } 3554 3555 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3556 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3557 // always handle the navigation keys in the UI thread 3558 switchOutDrawHistory(); 3559 if (mShiftIsPressed) { 3560 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 3561 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 3562 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 3563 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 3564 int multiplier = event.getRepeatCount() + 1; 3565 moveSelection(xRate * multiplier, yRate * multiplier); 3566 return true; 3567 } 3568 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3569 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3570 return true; 3571 } 3572 // Bubble up the key event as WebView doesn't handle it 3573 return false; 3574 } 3575 3576 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3577 switchOutDrawHistory(); 3578 if (event.getRepeatCount() == 0) { 3579 if (mShiftIsPressed) { 3580 return true; // discard press if copy in progress 3581 } 3582 mGotCenterDown = true; 3583 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3584 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3585 // Already checked mNativeClass, so we do not need to check it 3586 // again. 3587 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3588 return true; 3589 } 3590 // Bubble up the key event as WebView doesn't handle it 3591 return false; 3592 } 3593 3594 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3595 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3596 // turn off copy select if a shift-key combo is pressed 3597 mExtendSelection = mShiftIsPressed = false; 3598 if (mTouchMode == TOUCH_SELECT_MODE) { 3599 mTouchMode = TOUCH_INIT_MODE; 3600 } 3601 } 3602 3603 if (getSettings().getNavDump()) { 3604 switch (keyCode) { 3605 case KeyEvent.KEYCODE_4: 3606 dumpDisplayTree(); 3607 break; 3608 case KeyEvent.KEYCODE_5: 3609 case KeyEvent.KEYCODE_6: 3610 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 3611 break; 3612 case KeyEvent.KEYCODE_7: 3613 case KeyEvent.KEYCODE_8: 3614 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 3615 break; 3616 case KeyEvent.KEYCODE_9: 3617 nativeInstrumentReport(); 3618 return true; 3619 } 3620 } 3621 3622 if (nativeCursorIsTextInput()) { 3623 // This message will put the node in focus, for the DOM's notion 3624 // of focus, and make the focuscontroller active 3625 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3626 nativeCursorNodePointer()); 3627 // This will bring up the WebTextView and put it in focus, for 3628 // our view system's notion of focus 3629 rebuildWebTextView(); 3630 // Now we need to pass the event to it 3631 if (inEditingMode()) { 3632 mWebTextView.setDefaultSelection(); 3633 return mWebTextView.dispatchKeyEvent(event); 3634 } 3635 } else if (nativeHasFocusNode()) { 3636 // In this case, the cursor is not on a text input, but the focus 3637 // might be. Check it, and if so, hand over to the WebTextView. 3638 rebuildWebTextView(); 3639 if (inEditingMode()) { 3640 return mWebTextView.dispatchKeyEvent(event); 3641 } 3642 } 3643 3644 // TODO: should we pass all the keys to DOM or check the meta tag 3645 if (nativeCursorWantsKeyEvents() || true) { 3646 // pass the key to DOM 3647 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3648 // return true as DOM handles the key 3649 return true; 3650 } 3651 3652 // Bubble up the key event as WebView doesn't handle it 3653 return false; 3654 } 3655 3656 @Override 3657 public boolean onKeyUp(int keyCode, KeyEvent event) { 3658 if (DebugFlags.WEB_VIEW) { 3659 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3660 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3661 } 3662 3663 if (mNativeClass == 0) { 3664 return false; 3665 } 3666 3667 // special CALL handling when cursor node's href is "tel:XXX" 3668 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3669 String text = nativeCursorText(); 3670 if (!nativeCursorIsTextInput() && text != null 3671 && text.startsWith(SCHEME_TEL)) { 3672 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3673 getContext().startActivity(intent); 3674 return true; 3675 } 3676 } 3677 3678 // Bubble up the key event if 3679 // 1. it is a system key; or 3680 // 2. the host application wants to handle it; 3681 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3682 return false; 3683 } 3684 3685 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3686 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3687 if (commitCopy()) { 3688 return true; 3689 } 3690 } 3691 3692 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3693 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3694 // always handle the navigation keys in the UI thread 3695 // Bubble up the key event as WebView doesn't handle it 3696 return false; 3697 } 3698 3699 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3700 // remove the long press message first 3701 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3702 mGotCenterDown = false; 3703 3704 if (mShiftIsPressed) { 3705 if (mExtendSelection) { 3706 commitCopy(); 3707 } else { 3708 mExtendSelection = true; 3709 invalidate(); // draw the i-beam instead of the arrow 3710 } 3711 return true; // discard press if copy in progress 3712 } 3713 3714 // perform the single click 3715 Rect visibleRect = sendOurVisibleRect(); 3716 // Note that sendOurVisibleRect calls viewToContent, so the 3717 // coordinates should be in content coordinates. 3718 if (!nativeCursorIntersects(visibleRect)) { 3719 return false; 3720 } 3721 WebViewCore.CursorData data = cursorData(); 3722 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3723 playSoundEffect(SoundEffectConstants.CLICK); 3724 if (nativeCursorIsTextInput()) { 3725 rebuildWebTextView(); 3726 centerKeyPressOnTextField(); 3727 if (inEditingMode()) { 3728 mWebTextView.setDefaultSelection(); 3729 } 3730 return true; 3731 } 3732 nativeSetFollowedLink(true); 3733 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 3734 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3735 nativeCursorNodePointer()); 3736 } 3737 return true; 3738 } 3739 3740 // TODO: should we pass all the keys to DOM or check the meta tag 3741 if (nativeCursorWantsKeyEvents() || true) { 3742 // pass the key to DOM 3743 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3744 // return true as DOM handles the key 3745 return true; 3746 } 3747 3748 // Bubble up the key event as WebView doesn't handle it 3749 return false; 3750 } 3751 3752 private void setUpSelectXY() { 3753 mExtendSelection = false; 3754 mShiftIsPressed = true; 3755 if (nativeHasCursorNode()) { 3756 Rect rect = nativeCursorNodeBounds(); 3757 mSelectX = contentToViewX(rect.left); 3758 mSelectY = contentToViewY(rect.top); 3759 } else if (mLastTouchY > getVisibleTitleHeight()) { 3760 mSelectX = mScrollX + (int) mLastTouchX; 3761 mSelectY = mScrollY + (int) mLastTouchY; 3762 } else { 3763 mSelectX = mScrollX + getViewWidth() / 2; 3764 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 3765 } 3766 nativeHideCursor(); 3767 } 3768 3769 public void emulateShiftHeld() { 3770 if (0 == mNativeClass) return; // client isn't initialized 3771 setUpSelectXY(); 3772 } 3773 3774 private boolean commitCopy() { 3775 boolean copiedSomething = false; 3776 if (mExtendSelection) { 3777 String selection = nativeGetSelection(); 3778 if (selection != "") { 3779 if (DebugFlags.WEB_VIEW) { 3780 Log.v(LOGTAG, "commitCopy \"" + selection + "\""); 3781 } 3782 Toast.makeText(mContext 3783 , com.android.internal.R.string.text_copied 3784 , Toast.LENGTH_SHORT).show(); 3785 copiedSomething = true; 3786 try { 3787 IClipboard clip = IClipboard.Stub.asInterface( 3788 ServiceManager.getService("clipboard")); 3789 clip.setClipboardText(selection); 3790 } catch (android.os.RemoteException e) { 3791 Log.e(LOGTAG, "Clipboard failed", e); 3792 } 3793 } 3794 mExtendSelection = false; 3795 } 3796 mShiftIsPressed = false; 3797 invalidate(); // remove selection region and pointer 3798 if (mTouchMode == TOUCH_SELECT_MODE) { 3799 mTouchMode = TOUCH_INIT_MODE; 3800 } 3801 return copiedSomething; 3802 } 3803 3804 @Override 3805 protected void onAttachedToWindow() { 3806 super.onAttachedToWindow(); 3807 if (hasWindowFocus()) onWindowFocusChanged(true); 3808 } 3809 3810 @Override 3811 protected void onDetachedFromWindow() { 3812 clearTextEntry(); 3813 super.onDetachedFromWindow(); 3814 // Clean up the zoom controller 3815 mZoomButtonsController.setVisible(false); 3816 } 3817 3818 /** 3819 * @deprecated WebView no longer needs to implement 3820 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3821 */ 3822 @Deprecated 3823 public void onChildViewAdded(View parent, View child) {} 3824 3825 /** 3826 * @deprecated WebView no longer needs to implement 3827 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3828 */ 3829 @Deprecated 3830 public void onChildViewRemoved(View p, View child) {} 3831 3832 /** 3833 * @deprecated WebView should not have implemented 3834 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3835 * does nothing now. 3836 */ 3837 @Deprecated 3838 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3839 } 3840 3841 // To avoid drawing the cursor ring, and remove the TextView when our window 3842 // loses focus. 3843 @Override 3844 public void onWindowFocusChanged(boolean hasWindowFocus) { 3845 if (hasWindowFocus) { 3846 if (hasFocus()) { 3847 // If our window regained focus, and we have focus, then begin 3848 // drawing the cursor ring 3849 mDrawCursorRing = true; 3850 if (mNativeClass != 0) { 3851 nativeRecordButtons(true, false, true); 3852 if (inEditingMode()) { 3853 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3854 } 3855 } 3856 } else { 3857 // If our window gained focus, but we do not have it, do not 3858 // draw the cursor ring. 3859 mDrawCursorRing = false; 3860 // We do not call nativeRecordButtons here because we assume 3861 // that when we lost focus, or window focus, it got called with 3862 // false for the first parameter 3863 } 3864 } else { 3865 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3866 /* 3867 * The zoom controls come in their own window, so our window 3868 * loses focus. Our policy is to not draw the cursor ring if 3869 * our window is not focused, but this is an exception since 3870 * the user can still navigate the web page with the zoom 3871 * controls showing. 3872 */ 3873 // If our window has lost focus, stop drawing the cursor ring 3874 mDrawCursorRing = false; 3875 } 3876 mGotKeyDown = false; 3877 mShiftIsPressed = false; 3878 if (mNativeClass != 0) { 3879 nativeRecordButtons(false, false, true); 3880 } 3881 setFocusControllerInactive(); 3882 } 3883 invalidate(); 3884 super.onWindowFocusChanged(hasWindowFocus); 3885 } 3886 3887 /* 3888 * Pass a message to WebCore Thread, telling the WebCore::Page's 3889 * FocusController to be "inactive" so that it will 3890 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3891 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3892 */ 3893 /* package */ void setFocusControllerInactive() { 3894 // Do not need to also check whether mWebViewCore is null, because 3895 // mNativeClass is only set if mWebViewCore is non null 3896 if (mNativeClass == 0) return; 3897 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 3898 } 3899 3900 @Override 3901 protected void onFocusChanged(boolean focused, int direction, 3902 Rect previouslyFocusedRect) { 3903 if (DebugFlags.WEB_VIEW) { 3904 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3905 } 3906 if (focused) { 3907 // When we regain focus, if we have window focus, resume drawing 3908 // the cursor ring 3909 if (hasWindowFocus()) { 3910 mDrawCursorRing = true; 3911 if (mNativeClass != 0) { 3912 nativeRecordButtons(true, false, true); 3913 } 3914 //} else { 3915 // The WebView has gained focus while we do not have 3916 // windowfocus. When our window lost focus, we should have 3917 // called nativeRecordButtons(false...) 3918 } 3919 } else { 3920 // When we lost focus, unless focus went to the TextView (which is 3921 // true if we are in editing mode), stop drawing the cursor ring. 3922 if (!inEditingMode()) { 3923 mDrawCursorRing = false; 3924 if (mNativeClass != 0) { 3925 nativeRecordButtons(false, false, true); 3926 } 3927 setFocusControllerInactive(); 3928 } 3929 mGotKeyDown = false; 3930 } 3931 3932 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3933 } 3934 3935 /** 3936 * @hide 3937 */ 3938 @Override 3939 protected boolean setFrame(int left, int top, int right, int bottom) { 3940 boolean changed = super.setFrame(left, top, right, bottom); 3941 if (!changed && mHeightCanMeasure) { 3942 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 3943 // in WebViewCore after we get the first layout. We do call 3944 // requestLayout() when we get contentSizeChanged(). But the View 3945 // system won't call onSizeChanged if the dimension is not changed. 3946 // In this case, we need to call sendViewSizeZoom() explicitly to 3947 // notify the WebKit about the new dimensions. 3948 sendViewSizeZoom(); 3949 } 3950 return changed; 3951 } 3952 3953 private static class PostScale implements Runnable { 3954 final WebView mWebView; 3955 final boolean mUpdateTextWrap; 3956 3957 public PostScale(WebView webView, boolean updateTextWrap) { 3958 mWebView = webView; 3959 mUpdateTextWrap = updateTextWrap; 3960 } 3961 3962 public void run() { 3963 if (mWebView.mWebViewCore != null) { 3964 // we always force, in case our height changed, in which case we 3965 // still want to send the notification over to webkit. 3966 mWebView.setNewZoomScale(mWebView.mActualScale, 3967 mUpdateTextWrap, true); 3968 } 3969 } 3970 } 3971 3972 @Override 3973 protected void onSizeChanged(int w, int h, int ow, int oh) { 3974 super.onSizeChanged(w, h, ow, oh); 3975 // Center zooming to the center of the screen. 3976 if (mZoomScale == 0) { // unless we're already zooming 3977 // To anchor at top left corner. 3978 mZoomCenterX = 0; 3979 mZoomCenterY = getVisibleTitleHeight(); 3980 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 3981 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 3982 } 3983 3984 // adjust the max viewport width depending on the view dimensions. This 3985 // is to ensure the scaling is not going insane. So do not shrink it if 3986 // the view size is temporarily smaller, e.g. when soft keyboard is up. 3987 int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE); 3988 if (newMaxViewportWidth > sMaxViewportWidth) { 3989 sMaxViewportWidth = newMaxViewportWidth; 3990 } 3991 3992 // update mMinZoomScale if the minimum zoom scale is not fixed 3993 if (!mMinZoomScaleFixed) { 3994 // when change from narrow screen to wide screen, the new viewWidth 3995 // can be wider than the old content width. We limit the minimum 3996 // scale to 1.0f. The proper minimum scale will be calculated when 3997 // the new picture shows up. 3998 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 3999 / (mDrawHistory ? mHistoryPicture.getWidth() 4000 : mZoomOverviewWidth)); 4001 if (mInitialScaleInPercent > 0) { 4002 // limit the minZoomScale to the initialScale if it is set 4003 float initialScale = mInitialScaleInPercent / 100.0f; 4004 if (mMinZoomScale > initialScale) { 4005 mMinZoomScale = initialScale; 4006 } 4007 } 4008 } 4009 4010 // onSizeChanged() is called during WebView layout. And any 4011 // requestLayout() is blocked during layout. As setNewZoomScale() will 4012 // call its child View to reposition itself through ViewManager's 4013 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 4014 // <b/> 4015 // only update the text wrap scale if width changed. 4016 post(new PostScale(this, w != ow)); 4017 } 4018 4019 @Override 4020 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4021 super.onScrollChanged(l, t, oldl, oldt); 4022 sendOurVisibleRect(); 4023 } 4024 4025 4026 @Override 4027 public boolean dispatchKeyEvent(KeyEvent event) { 4028 boolean dispatch = true; 4029 4030 if (!inEditingMode()) { 4031 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4032 mGotKeyDown = true; 4033 } else { 4034 if (!mGotKeyDown) { 4035 /* 4036 * We got a key up for which we were not the recipient of 4037 * the original key down. Don't give it to the view. 4038 */ 4039 dispatch = false; 4040 } 4041 mGotKeyDown = false; 4042 } 4043 } 4044 4045 if (dispatch) { 4046 return super.dispatchKeyEvent(event); 4047 } else { 4048 // We didn't dispatch, so let something else handle the key 4049 return false; 4050 } 4051 } 4052 4053 // Here are the snap align logic: 4054 // 1. If it starts nearly horizontally or vertically, snap align; 4055 // 2. If there is a dramitic direction change, let it go; 4056 // 3. If there is a same direction back and forth, lock it. 4057 4058 // adjustable parameters 4059 private int mMinLockSnapReverseDistance; 4060 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4061 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4062 4063 private static int sign(float x) { 4064 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4065 } 4066 4067 // if the page can scroll <= this value, we won't allow the drag tracker 4068 // to have any effect. 4069 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4070 4071 private class DragTrackerHandler { 4072 private final DragTracker mProxy; 4073 private final float mStartY, mStartX; 4074 private final float mMinDY, mMinDX; 4075 private final float mMaxDY, mMaxDX; 4076 private float mCurrStretchY, mCurrStretchX; 4077 private int mSX, mSY; 4078 private Interpolator mInterp; 4079 private float[] mXY = new float[2]; 4080 4081 // inner (non-state) classes can't have enums :( 4082 private static final int DRAGGING_STATE = 0; 4083 private static final int ANIMATING_STATE = 1; 4084 private static final int FINISHED_STATE = 2; 4085 private int mState; 4086 4087 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4088 mProxy = proxy; 4089 4090 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4091 int viewTop = getScrollY(); 4092 int viewBottom = viewTop + getHeight(); 4093 4094 mStartY = y; 4095 mMinDY = -viewTop; 4096 mMaxDY = docBottom - viewBottom; 4097 4098 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4099 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4100 " up/down= " + mMinDY + " " + mMaxDY); 4101 } 4102 4103 int docRight = computeHorizontalScrollRange(); 4104 int viewLeft = getScrollX(); 4105 int viewRight = viewLeft + getWidth(); 4106 mStartX = x; 4107 mMinDX = -viewLeft; 4108 mMaxDX = docRight - viewRight; 4109 4110 mState = DRAGGING_STATE; 4111 mProxy.onStartDrag(x, y); 4112 4113 // ensure we buildBitmap at least once 4114 mSX = -99999; 4115 } 4116 4117 private float computeStretch(float delta, float min, float max) { 4118 float stretch = 0; 4119 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4120 if (delta < min) { 4121 stretch = delta - min; 4122 } else if (delta > max) { 4123 stretch = delta - max; 4124 } 4125 } 4126 return stretch; 4127 } 4128 4129 public void dragTo(float x, float y) { 4130 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4131 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4132 4133 if ((mSnapScrollMode & SNAP_X) != 0) { 4134 sy = 0; 4135 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4136 sx = 0; 4137 } 4138 4139 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4140 mCurrStretchX = sx; 4141 mCurrStretchY = sy; 4142 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4143 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4144 " " + sy); 4145 } 4146 if (mProxy.onStretchChange(sx, sy)) { 4147 invalidate(); 4148 } 4149 } 4150 } 4151 4152 public void stopDrag() { 4153 final int DURATION = 200; 4154 int now = (int)SystemClock.uptimeMillis(); 4155 mInterp = new Interpolator(2); 4156 mXY[0] = mCurrStretchX; 4157 mXY[1] = mCurrStretchY; 4158 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4159 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4160 mInterp.setKeyFrame(0, now, mXY, blend); 4161 float[] zerozero = new float[] { 0, 0 }; 4162 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4163 mState = ANIMATING_STATE; 4164 4165 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4166 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4167 } 4168 } 4169 4170 // Call this after each draw. If it ruturns null, the tracker is done 4171 public boolean isFinished() { 4172 return mState == FINISHED_STATE; 4173 } 4174 4175 private int hiddenHeightOfTitleBar() { 4176 return getTitleHeight() - getVisibleTitleHeight(); 4177 } 4178 4179 // need a way to know if 565 or 8888 is the right config for 4180 // capturing the display and giving it to the drag proxy 4181 private Bitmap.Config offscreenBitmapConfig() { 4182 // hard code 565 for now 4183 return Bitmap.Config.RGB_565; 4184 } 4185 4186 /* If the tracker draws, then this returns true, otherwise it will 4187 return false, and draw nothing. 4188 */ 4189 public boolean draw(Canvas canvas) { 4190 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4191 int sx = getScrollX(); 4192 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4193 if (mSX != sx || mSY != sy) { 4194 buildBitmap(sx, sy); 4195 mSX = sx; 4196 mSY = sy; 4197 } 4198 4199 if (mState == ANIMATING_STATE) { 4200 Interpolator.Result result = mInterp.timeToValues(mXY); 4201 if (result == Interpolator.Result.FREEZE_END) { 4202 mState = FINISHED_STATE; 4203 return false; 4204 } else { 4205 mProxy.onStretchChange(mXY[0], mXY[1]); 4206 invalidate(); 4207 // fall through to the draw 4208 } 4209 } 4210 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4211 canvas.translate(sx, sy); 4212 mProxy.onDraw(canvas); 4213 canvas.restoreToCount(count); 4214 return true; 4215 } 4216 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4217 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4218 mCurrStretchX + " " + mCurrStretchY); 4219 } 4220 return false; 4221 } 4222 4223 private void buildBitmap(int sx, int sy) { 4224 int w = getWidth(); 4225 int h = getViewHeight(); 4226 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4227 Canvas canvas = new Canvas(bm); 4228 canvas.translate(-sx, -sy); 4229 drawContent(canvas); 4230 4231 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4232 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4233 " " + sy + " " + w + " " + h); 4234 } 4235 mProxy.onBitmapChange(bm); 4236 } 4237 } 4238 4239 /** @hide */ 4240 public static class DragTracker { 4241 public void onStartDrag(float x, float y) {} 4242 public boolean onStretchChange(float sx, float sy) { 4243 // return true to have us inval the view 4244 return false; 4245 } 4246 public void onStopDrag() {} 4247 public void onBitmapChange(Bitmap bm) {} 4248 public void onDraw(Canvas canvas) {} 4249 } 4250 4251 /** @hide */ 4252 public DragTracker getDragTracker() { 4253 return mDragTracker; 4254 } 4255 4256 /** @hide */ 4257 public void setDragTracker(DragTracker tracker) { 4258 mDragTracker = tracker; 4259 } 4260 4261 private DragTracker mDragTracker; 4262 private DragTrackerHandler mDragTrackerHandler; 4263 4264 private class ScaleDetectorListener implements 4265 ScaleGestureDetector.OnScaleGestureListener { 4266 4267 public boolean onScaleBegin(ScaleGestureDetector detector) { 4268 // cancel the single touch handling 4269 cancelTouch(); 4270 if (mZoomButtonsController.isVisible()) { 4271 mZoomButtonsController.setVisible(false); 4272 } 4273 // reset the zoom overview mode so that the page won't auto grow 4274 mInZoomOverview = false; 4275 // If it is in password mode, turn it off so it does not draw 4276 // misplaced. 4277 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4278 mWebTextView.setInPassword(false); 4279 } 4280 return true; 4281 } 4282 4283 public void onScaleEnd(ScaleGestureDetector detector) { 4284 if (mPreviewZoomOnly) { 4285 mPreviewZoomOnly = false; 4286 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4287 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4288 // don't reflow when zoom in; when zoom out, do reflow if the 4289 // new scale is almost minimum scale; 4290 boolean reflowNow = (mActualScale - mMinZoomScale <= 0.01f) 4291 || ((mActualScale <= 0.8 * mTextWrapScale)); 4292 // force zoom after mPreviewZoomOnly is set to false so that the 4293 // new view size will be passed to the WebKit 4294 setNewZoomScale(mActualScale, reflowNow, true); 4295 // call invalidate() to draw without zoom filter 4296 invalidate(); 4297 } 4298 // adjust the edit text view if needed 4299 if (inEditingMode() && didUpdateTextViewBounds(false) 4300 && nativeFocusCandidateIsPassword()) { 4301 // If it is a password field, start drawing the 4302 // WebTextView once again. 4303 mWebTextView.setInPassword(true); 4304 } 4305 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4306 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4307 // may trigger the unwanted fling. 4308 mTouchMode = TOUCH_PINCH_DRAG; 4309 startTouch(detector.getFocusX(), detector.getFocusY(), 4310 mLastTouchTime); 4311 } 4312 4313 public boolean onScale(ScaleGestureDetector detector) { 4314 float scale = (float) (Math.round(detector.getScaleFactor() 4315 * mActualScale * 100) / 100.0); 4316 if (Math.abs(scale - mActualScale) >= PREVIEW_SCALE_INCREMENT) { 4317 mPreviewZoomOnly = true; 4318 // limit the scale change per step 4319 if (scale > mActualScale) { 4320 scale = Math.min(scale, mActualScale * 1.25f); 4321 } else { 4322 scale = Math.max(scale, mActualScale * 0.8f); 4323 } 4324 mZoomCenterX = detector.getFocusX(); 4325 mZoomCenterY = detector.getFocusY(); 4326 setNewZoomScale(scale, false, false); 4327 invalidate(); 4328 return true; 4329 } 4330 return false; 4331 } 4332 } 4333 4334 @Override 4335 public boolean onTouchEvent(MotionEvent ev) { 4336 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4337 return false; 4338 } 4339 4340 if (DebugFlags.WEB_VIEW) { 4341 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4342 + mTouchMode); 4343 } 4344 4345 int action; 4346 float x, y; 4347 long eventTime = ev.getEventTime(); 4348 4349 // FIXME: we may consider to give WebKit an option to handle multi-touch 4350 // events later. 4351 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 4352 if (mMinZoomScale < mMaxZoomScale) { 4353 mScaleDetector.onTouchEvent(ev); 4354 if (mScaleDetector.isInProgress()) { 4355 mLastTouchTime = eventTime; 4356 return true; 4357 } 4358 x = mScaleDetector.getFocusX(); 4359 y = mScaleDetector.getFocusY(); 4360 action = ev.getAction() & MotionEvent.ACTION_MASK; 4361 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4362 cancelTouch(); 4363 action = MotionEvent.ACTION_DOWN; 4364 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4365 // set mLastTouchX/Y to the remaining point 4366 mLastTouchX = x; 4367 mLastTouchY = y; 4368 } else if (action == MotionEvent.ACTION_MOVE) { 4369 // negative x or y indicate it is on the edge, skip it. 4370 if (x < 0 || y < 0) { 4371 return true; 4372 } 4373 } 4374 } else { 4375 // if the page disallow zoom, skip multi-pointer action 4376 return true; 4377 } 4378 } else { 4379 action = ev.getAction(); 4380 x = ev.getX(); 4381 y = ev.getY(); 4382 } 4383 4384 // Due to the touch screen edge effect, a touch closer to the edge 4385 // always snapped to the edge. As getViewWidth() can be different from 4386 // getWidth() due to the scrollbar, adjusting the point to match 4387 // getViewWidth(). Same applied to the height. 4388 if (x > getViewWidth() - 1) { 4389 x = getViewWidth() - 1; 4390 } 4391 if (y > getViewHeightWithTitle() - 1) { 4392 y = getViewHeightWithTitle() - 1; 4393 } 4394 4395 // pass the touch events from UI thread to WebCore thread 4396 if (mForwardTouchEvents && (action != MotionEvent.ACTION_MOVE 4397 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 4398 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 4399 ted.mAction = action; 4400 ted.mX = viewToContentX((int) x + mScrollX); 4401 ted.mY = viewToContentY((int) y + mScrollY); 4402 ted.mEventTime = eventTime; 4403 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4404 mLastSentTouchTime = eventTime; 4405 } 4406 4407 float fDeltaX = mLastTouchX - x; 4408 float fDeltaY = mLastTouchY - y; 4409 int deltaX = (int) fDeltaX; 4410 int deltaY = (int) fDeltaY; 4411 4412 switch (action) { 4413 case MotionEvent.ACTION_DOWN: { 4414 mPreventDrag = PREVENT_DRAG_NO; 4415 if (!mScroller.isFinished()) { 4416 // stop the current scroll animation, but if this is 4417 // the start of a fling, allow it to add to the current 4418 // fling's velocity 4419 mScroller.abortAnimation(); 4420 mTouchMode = TOUCH_DRAG_START_MODE; 4421 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 4422 } else if (mShiftIsPressed) { 4423 mSelectX = mScrollX + (int) x; 4424 mSelectY = mScrollY + (int) y; 4425 mTouchMode = TOUCH_SELECT_MODE; 4426 if (DebugFlags.WEB_VIEW) { 4427 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 4428 } 4429 nativeMoveSelection(viewToContentX(mSelectX), 4430 viewToContentY(mSelectY), false); 4431 mTouchSelection = mExtendSelection = true; 4432 invalidate(); // draw the i-beam instead of the arrow 4433 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4434 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4435 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4436 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4437 } else { 4438 // commit the short press action for the previous tap 4439 doShortPress(); 4440 // continue, mTouchMode should be still TOUCH_INIT_MODE 4441 } 4442 } else { 4443 mPreviewZoomOnly = false; 4444 mTouchMode = TOUCH_INIT_MODE; 4445 mPreventDrag = mForwardTouchEvents ? PREVENT_DRAG_MAYBE_YES 4446 : PREVENT_DRAG_NO; 4447 mPreventLongPress = false; 4448 mPreventDoubleTap = false; 4449 mWebViewCore.sendMessage( 4450 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4451 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4452 EventLog.writeEvent(EVENT_LOG_DOUBLE_TAP_DURATION, 4453 (eventTime - mLastTouchUpTime), eventTime); 4454 } 4455 } 4456 // Trigger the link 4457 if (mTouchMode == TOUCH_INIT_MODE 4458 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4459 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4460 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 4461 } 4462 startTouch(x, y, eventTime); 4463 break; 4464 } 4465 case MotionEvent.ACTION_MOVE: { 4466 if (mTouchMode == TOUCH_DONE_MODE) { 4467 // no dragging during scroll zoom animation 4468 break; 4469 } 4470 mVelocityTracker.addMovement(ev); 4471 4472 if (mTouchMode != TOUCH_DRAG_MODE) { 4473 if (mTouchMode == TOUCH_SELECT_MODE) { 4474 mSelectX = mScrollX + (int) x; 4475 mSelectY = mScrollY + (int) y; 4476 if (DebugFlags.WEB_VIEW) { 4477 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 4478 } 4479 nativeMoveSelection(viewToContentX(mSelectX), 4480 viewToContentY(mSelectY), true); 4481 invalidate(); 4482 break; 4483 } 4484 if ((deltaX * deltaX + deltaY * deltaY) < mTouchSlopSquare) { 4485 break; 4486 } 4487 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 4488 // track mLastTouchTime as we may need to do fling at 4489 // ACTION_UP 4490 mLastTouchTime = eventTime; 4491 break; 4492 } 4493 if (mTouchMode == TOUCH_SHORTPRESS_MODE 4494 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4495 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4496 } else if (mTouchMode == TOUCH_INIT_MODE 4497 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4498 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4499 } 4500 if (mFullScreenHolder != null) { 4501 // in full screen mode, the WebView can't be panned. 4502 mTouchMode = TOUCH_DONE_MODE; 4503 break; 4504 } 4505 4506 // if it starts nearly horizontal or vertical, enforce it 4507 int ax = Math.abs(deltaX); 4508 int ay = Math.abs(deltaY); 4509 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4510 mSnapScrollMode = SNAP_X; 4511 mSnapPositive = deltaX > 0; 4512 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4513 mSnapScrollMode = SNAP_Y; 4514 mSnapPositive = deltaY > 0; 4515 } 4516 4517 mTouchMode = TOUCH_DRAG_MODE; 4518 mLastTouchX = x; 4519 mLastTouchY = y; 4520 fDeltaX = 0.0f; 4521 fDeltaY = 0.0f; 4522 deltaX = 0; 4523 deltaY = 0; 4524 4525 WebViewCore.reducePriority(); 4526 if (!mDragFromTextInput) { 4527 nativeHideCursor(); 4528 } 4529 WebSettings settings = getSettings(); 4530 if (settings.supportZoom() 4531 && settings.getBuiltInZoomControls() 4532 && !mZoomButtonsController.isVisible() 4533 && mMinZoomScale < mMaxZoomScale) { 4534 mZoomButtonsController.setVisible(true); 4535 int count = settings.getDoubleTapToastCount(); 4536 if (mInZoomOverview && count > 0) { 4537 settings.setDoubleTapToastCount(--count); 4538 Toast.makeText(mContext, 4539 com.android.internal.R.string.double_tap_toast, 4540 Toast.LENGTH_LONG).show(); 4541 } 4542 } 4543 } 4544 4545 // do pan 4546 int newScrollX = pinLocX(mScrollX + deltaX); 4547 int newDeltaX = newScrollX - mScrollX; 4548 if (deltaX != newDeltaX) { 4549 deltaX = newDeltaX; 4550 fDeltaX = (float) newDeltaX; 4551 } 4552 int newScrollY = pinLocY(mScrollY + deltaY); 4553 int newDeltaY = newScrollY - mScrollY; 4554 if (deltaY != newDeltaY) { 4555 deltaY = newDeltaY; 4556 fDeltaY = (float) newDeltaY; 4557 } 4558 boolean done = false; 4559 boolean keepScrollBarsVisible = false; 4560 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 4561 keepScrollBarsVisible = done = true; 4562 } else { 4563 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4564 int ax = Math.abs(deltaX); 4565 int ay = Math.abs(deltaY); 4566 if (mSnapScrollMode == SNAP_X) { 4567 // radical change means getting out of snap mode 4568 if (ay > MAX_SLOPE_FOR_DIAG * ax 4569 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4570 mSnapScrollMode = SNAP_NONE; 4571 } 4572 // reverse direction means lock in the snap mode 4573 if (ax > MAX_SLOPE_FOR_DIAG * ay && 4574 (mSnapPositive 4575 ? deltaX < -mMinLockSnapReverseDistance 4576 : deltaX > mMinLockSnapReverseDistance)) { 4577 mSnapScrollMode |= SNAP_LOCK; 4578 } 4579 } else { 4580 // radical change means getting out of snap mode 4581 if (ax > MAX_SLOPE_FOR_DIAG * ay 4582 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4583 mSnapScrollMode = SNAP_NONE; 4584 } 4585 // reverse direction means lock in the snap mode 4586 if (ay > MAX_SLOPE_FOR_DIAG * ax && 4587 (mSnapPositive 4588 ? deltaY < -mMinLockSnapReverseDistance 4589 : deltaY > mMinLockSnapReverseDistance)) { 4590 mSnapScrollMode |= SNAP_LOCK; 4591 } 4592 } 4593 } 4594 if (mSnapScrollMode != SNAP_NONE) { 4595 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 4596 deltaY = 0; 4597 } else { 4598 deltaX = 0; 4599 } 4600 } 4601 if ((deltaX | deltaY) != 0) { 4602 scrollBy(deltaX, deltaY); 4603 if (deltaX != 0) { 4604 mLastTouchX = x; 4605 } 4606 if (deltaY != 0) { 4607 mLastTouchY = y; 4608 } 4609 mHeldMotionless = MOTIONLESS_FALSE; 4610 } else { 4611 // keep the scrollbar on the screen even there is no 4612 // scroll 4613 keepScrollBarsVisible = true; 4614 } 4615 mLastTouchTime = eventTime; 4616 mUserScroll = true; 4617 } 4618 4619 if (!getSettings().getBuiltInZoomControls()) { 4620 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 4621 if (mZoomControls != null && showPlusMinus) { 4622 if (mZoomControls.getVisibility() == View.VISIBLE) { 4623 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4624 } else { 4625 mZoomControls.show(showPlusMinus, false); 4626 } 4627 mPrivateHandler.postDelayed(mZoomControlRunnable, 4628 ZOOM_CONTROLS_TIMEOUT); 4629 } 4630 } 4631 4632 if (mDragTrackerHandler != null) { 4633 mDragTrackerHandler.dragTo(x, y); 4634 } 4635 4636 if (keepScrollBarsVisible) { 4637 if (mHeldMotionless != MOTIONLESS_TRUE) { 4638 mHeldMotionless = MOTIONLESS_TRUE; 4639 invalidate(); 4640 } 4641 // keep the scrollbar on the screen even there is no scroll 4642 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 4643 false); 4644 // return false to indicate that we can't pan out of the 4645 // view space 4646 return !done; 4647 } 4648 break; 4649 } 4650 case MotionEvent.ACTION_UP: { 4651 if (mDragTrackerHandler != null) { 4652 mDragTrackerHandler.stopDrag(); 4653 } 4654 mLastTouchUpTime = eventTime; 4655 switch (mTouchMode) { 4656 case TOUCH_DOUBLE_TAP_MODE: // double tap 4657 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4658 mTouchMode = TOUCH_DONE_MODE; 4659 if (mPreventDoubleTap) { 4660 WebViewCore.TouchEventData ted 4661 = new WebViewCore.TouchEventData(); 4662 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 4663 ted.mX = viewToContentX((int) x + mScrollX); 4664 ted.mY = viewToContentY((int) y + mScrollY); 4665 ted.mEventTime = eventTime; 4666 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4667 } else if (mFullScreenHolder == null) { 4668 doDoubleTap(); 4669 } 4670 break; 4671 case TOUCH_SELECT_MODE: 4672 commitCopy(); 4673 mTouchSelection = false; 4674 break; 4675 case TOUCH_INIT_MODE: // tap 4676 case TOUCH_SHORTPRESS_START_MODE: 4677 case TOUCH_SHORTPRESS_MODE: 4678 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4679 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4680 if ((deltaX * deltaX + deltaY * deltaY) > mTouchSlopSquare) { 4681 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 4682 " WebCore's response for touch down."); 4683 if (mFullScreenHolder == null 4684 && (computeHorizontalScrollExtent() < computeHorizontalScrollRange() 4685 || computeVerticalScrollExtent() < computeVerticalScrollRange())) { 4686 // we will not rewrite drag code here, but we 4687 // will try fling if it applies. 4688 WebViewCore.reducePriority(); 4689 // fall through to TOUCH_DRAG_MODE 4690 } else { 4691 break; 4692 } 4693 } else { 4694 // mPreventDrag can be PREVENT_DRAG_MAYBE_YES in 4695 // TOUCH_INIT_MODE. To give WebCoreThread a little 4696 // more time to send PREVENT_TOUCH_ID, we check 4697 // again in responding RELEASE_SINGLE_TAP. 4698 if (mPreventDrag != PREVENT_DRAG_YES) { 4699 if (mTouchMode == TOUCH_INIT_MODE) { 4700 mPrivateHandler.sendMessageDelayed( 4701 mPrivateHandler.obtainMessage( 4702 RELEASE_SINGLE_TAP), 4703 ViewConfiguration.getDoubleTapTimeout()); 4704 } else { 4705 mTouchMode = TOUCH_DONE_MODE; 4706 doShortPress(); 4707 } 4708 } 4709 break; 4710 } 4711 case TOUCH_DRAG_MODE: 4712 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4713 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4714 mHeldMotionless = MOTIONLESS_TRUE; 4715 // redraw in high-quality, as we're done dragging 4716 invalidate(); 4717 // if the user waits a while w/o moving before the 4718 // up, we don't want to do a fling 4719 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4720 mVelocityTracker.addMovement(ev); 4721 doFling(); 4722 break; 4723 } 4724 mLastVelocity = 0; 4725 WebViewCore.resumePriority(); 4726 break; 4727 case TOUCH_DRAG_START_MODE: 4728 case TOUCH_DONE_MODE: 4729 // do nothing 4730 break; 4731 } 4732 // we also use mVelocityTracker == null to tell us that we are 4733 // not "moving around", so we can take the slower/prettier 4734 // mode in the drawing code 4735 if (mVelocityTracker != null) { 4736 mVelocityTracker.recycle(); 4737 mVelocityTracker = null; 4738 } 4739 break; 4740 } 4741 case MotionEvent.ACTION_CANCEL: { 4742 cancelTouch(); 4743 break; 4744 } 4745 } 4746 return true; 4747 } 4748 4749 private void startTouch(float x, float y, long eventTime) { 4750 // Remember where the motion event started 4751 mLastTouchX = x; 4752 mLastTouchY = y; 4753 mLastTouchTime = eventTime; 4754 mVelocityTracker = VelocityTracker.obtain(); 4755 mSnapScrollMode = SNAP_NONE; 4756 if (mDragTracker != null) { 4757 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 4758 } 4759 } 4760 4761 private void cancelTouch() { 4762 if (mDragTrackerHandler != null) { 4763 mDragTrackerHandler.stopDrag(); 4764 } 4765 // we also use mVelocityTracker == null to tell us that we are 4766 // not "moving around", so we can take the slower/prettier 4767 // mode in the drawing code 4768 if (mVelocityTracker != null) { 4769 mVelocityTracker.recycle(); 4770 mVelocityTracker = null; 4771 } 4772 if (mTouchMode == TOUCH_DRAG_MODE) { 4773 WebViewCore.resumePriority(); 4774 } 4775 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4776 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4777 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4778 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4779 mHeldMotionless = MOTIONLESS_TRUE; 4780 mTouchMode = TOUCH_DONE_MODE; 4781 nativeHideCursor(); 4782 } 4783 4784 private long mTrackballFirstTime = 0; 4785 private long mTrackballLastTime = 0; 4786 private float mTrackballRemainsX = 0.0f; 4787 private float mTrackballRemainsY = 0.0f; 4788 private int mTrackballXMove = 0; 4789 private int mTrackballYMove = 0; 4790 private boolean mExtendSelection = false; 4791 private boolean mTouchSelection = false; 4792 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4793 private static final int TRACKBALL_TIMEOUT = 200; 4794 private static final int TRACKBALL_WAIT = 100; 4795 private static final int TRACKBALL_SCALE = 400; 4796 private static final int TRACKBALL_SCROLL_COUNT = 5; 4797 private static final int TRACKBALL_MOVE_COUNT = 10; 4798 private static final int TRACKBALL_MULTIPLIER = 3; 4799 private static final int SELECT_CURSOR_OFFSET = 16; 4800 private int mSelectX = 0; 4801 private int mSelectY = 0; 4802 private boolean mFocusSizeChanged = false; 4803 private boolean mShiftIsPressed = false; 4804 private boolean mTrackballDown = false; 4805 private long mTrackballUpTime = 0; 4806 private long mLastCursorTime = 0; 4807 private Rect mLastCursorBounds; 4808 4809 // Set by default; BrowserActivity clears to interpret trackball data 4810 // directly for movement. Currently, the framework only passes 4811 // arrow key events, not trackball events, from one child to the next 4812 private boolean mMapTrackballToArrowKeys = true; 4813 4814 public void setMapTrackballToArrowKeys(boolean setMap) { 4815 mMapTrackballToArrowKeys = setMap; 4816 } 4817 4818 void resetTrackballTime() { 4819 mTrackballLastTime = 0; 4820 } 4821 4822 @Override 4823 public boolean onTrackballEvent(MotionEvent ev) { 4824 long time = ev.getEventTime(); 4825 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4826 if (ev.getY() > 0) pageDown(true); 4827 if (ev.getY() < 0) pageUp(true); 4828 return true; 4829 } 4830 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4831 if (mShiftIsPressed) { 4832 return true; // discard press if copy in progress 4833 } 4834 mTrackballDown = true; 4835 if (mNativeClass == 0) { 4836 return false; 4837 } 4838 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4839 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4840 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4841 nativeSelectBestAt(mLastCursorBounds); 4842 } 4843 if (DebugFlags.WEB_VIEW) { 4844 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4845 + " time=" + time 4846 + " mLastCursorTime=" + mLastCursorTime); 4847 } 4848 if (isInTouchMode()) requestFocusFromTouch(); 4849 return false; // let common code in onKeyDown at it 4850 } 4851 if (ev.getAction() == MotionEvent.ACTION_UP) { 4852 // LONG_PRESS_CENTER is set in common onKeyDown 4853 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4854 mTrackballDown = false; 4855 mTrackballUpTime = time; 4856 if (mShiftIsPressed) { 4857 if (mExtendSelection) { 4858 commitCopy(); 4859 } else { 4860 mExtendSelection = true; 4861 invalidate(); // draw the i-beam instead of the arrow 4862 } 4863 return true; // discard press if copy in progress 4864 } 4865 if (DebugFlags.WEB_VIEW) { 4866 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4867 + " time=" + time 4868 ); 4869 } 4870 return false; // let common code in onKeyUp at it 4871 } 4872 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4873 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4874 return false; 4875 } 4876 if (mTrackballDown) { 4877 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4878 return true; // discard move if trackball is down 4879 } 4880 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4881 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4882 return true; 4883 } 4884 // TODO: alternatively we can do panning as touch does 4885 switchOutDrawHistory(); 4886 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4887 if (DebugFlags.WEB_VIEW) { 4888 Log.v(LOGTAG, "onTrackballEvent time=" 4889 + time + " last=" + mTrackballLastTime); 4890 } 4891 mTrackballFirstTime = time; 4892 mTrackballXMove = mTrackballYMove = 0; 4893 } 4894 mTrackballLastTime = time; 4895 if (DebugFlags.WEB_VIEW) { 4896 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4897 } 4898 mTrackballRemainsX += ev.getX(); 4899 mTrackballRemainsY += ev.getY(); 4900 doTrackball(time); 4901 return true; 4902 } 4903 4904 void moveSelection(float xRate, float yRate) { 4905 if (mNativeClass == 0) 4906 return; 4907 int width = getViewWidth(); 4908 int height = getViewHeight(); 4909 mSelectX += xRate; 4910 mSelectY += yRate; 4911 int maxX = width + mScrollX; 4912 int maxY = height + mScrollY; 4913 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 4914 , mSelectX)); 4915 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 4916 , mSelectY)); 4917 if (DebugFlags.WEB_VIEW) { 4918 Log.v(LOGTAG, "moveSelection" 4919 + " mSelectX=" + mSelectX 4920 + " mSelectY=" + mSelectY 4921 + " mScrollX=" + mScrollX 4922 + " mScrollY=" + mScrollY 4923 + " xRate=" + xRate 4924 + " yRate=" + yRate 4925 ); 4926 } 4927 nativeMoveSelection(viewToContentX(mSelectX), 4928 viewToContentY(mSelectY), mExtendSelection); 4929 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 4930 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4931 : 0; 4932 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 4933 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4934 : 0; 4935 pinScrollBy(scrollX, scrollY, true, 0); 4936 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 4937 requestRectangleOnScreen(select); 4938 invalidate(); 4939 } 4940 4941 private int scaleTrackballX(float xRate, int width) { 4942 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4943 int nextXMove = xMove; 4944 if (xMove > 0) { 4945 if (xMove > mTrackballXMove) { 4946 xMove -= mTrackballXMove; 4947 } 4948 } else if (xMove < mTrackballXMove) { 4949 xMove -= mTrackballXMove; 4950 } 4951 mTrackballXMove = nextXMove; 4952 return xMove; 4953 } 4954 4955 private int scaleTrackballY(float yRate, int height) { 4956 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 4957 int nextYMove = yMove; 4958 if (yMove > 0) { 4959 if (yMove > mTrackballYMove) { 4960 yMove -= mTrackballYMove; 4961 } 4962 } else if (yMove < mTrackballYMove) { 4963 yMove -= mTrackballYMove; 4964 } 4965 mTrackballYMove = nextYMove; 4966 return yMove; 4967 } 4968 4969 private int keyCodeToSoundsEffect(int keyCode) { 4970 switch(keyCode) { 4971 case KeyEvent.KEYCODE_DPAD_UP: 4972 return SoundEffectConstants.NAVIGATION_UP; 4973 case KeyEvent.KEYCODE_DPAD_RIGHT: 4974 return SoundEffectConstants.NAVIGATION_RIGHT; 4975 case KeyEvent.KEYCODE_DPAD_DOWN: 4976 return SoundEffectConstants.NAVIGATION_DOWN; 4977 case KeyEvent.KEYCODE_DPAD_LEFT: 4978 return SoundEffectConstants.NAVIGATION_LEFT; 4979 } 4980 throw new IllegalArgumentException("keyCode must be one of " + 4981 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 4982 "KEYCODE_DPAD_LEFT}."); 4983 } 4984 4985 private void doTrackball(long time) { 4986 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 4987 if (elapsed == 0) { 4988 elapsed = TRACKBALL_TIMEOUT; 4989 } 4990 float xRate = mTrackballRemainsX * 1000 / elapsed; 4991 float yRate = mTrackballRemainsY * 1000 / elapsed; 4992 int viewWidth = getViewWidth(); 4993 int viewHeight = getViewHeight(); 4994 if (mShiftIsPressed) { 4995 moveSelection(scaleTrackballX(xRate, viewWidth), 4996 scaleTrackballY(yRate, viewHeight)); 4997 mTrackballRemainsX = mTrackballRemainsY = 0; 4998 return; 4999 } 5000 float ax = Math.abs(xRate); 5001 float ay = Math.abs(yRate); 5002 float maxA = Math.max(ax, ay); 5003 if (DebugFlags.WEB_VIEW) { 5004 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5005 + " xRate=" + xRate 5006 + " yRate=" + yRate 5007 + " mTrackballRemainsX=" + mTrackballRemainsX 5008 + " mTrackballRemainsY=" + mTrackballRemainsY); 5009 } 5010 int width = mContentWidth - viewWidth; 5011 int height = mContentHeight - viewHeight; 5012 if (width < 0) width = 0; 5013 if (height < 0) height = 0; 5014 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5015 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5016 maxA = Math.max(ax, ay); 5017 int count = Math.max(0, (int) maxA); 5018 int oldScrollX = mScrollX; 5019 int oldScrollY = mScrollY; 5020 if (count > 0) { 5021 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5022 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5023 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5024 KeyEvent.KEYCODE_DPAD_RIGHT; 5025 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5026 if (DebugFlags.WEB_VIEW) { 5027 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5028 + " count=" + count 5029 + " mTrackballRemainsX=" + mTrackballRemainsX 5030 + " mTrackballRemainsY=" + mTrackballRemainsY); 5031 } 5032 if (navHandledKey(selectKeyCode, count, false, time, false)) { 5033 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5034 } 5035 mTrackballRemainsX = mTrackballRemainsY = 0; 5036 } 5037 if (count >= TRACKBALL_SCROLL_COUNT) { 5038 int xMove = scaleTrackballX(xRate, width); 5039 int yMove = scaleTrackballY(yRate, height); 5040 if (DebugFlags.WEB_VIEW) { 5041 Log.v(LOGTAG, "doTrackball pinScrollBy" 5042 + " count=" + count 5043 + " xMove=" + xMove + " yMove=" + yMove 5044 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5045 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5046 ); 5047 } 5048 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5049 xMove = 0; 5050 } 5051 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5052 yMove = 0; 5053 } 5054 if (xMove != 0 || yMove != 0) { 5055 pinScrollBy(xMove, yMove, true, 0); 5056 } 5057 mUserScroll = true; 5058 } 5059 } 5060 5061 private int computeMaxScrollY() { 5062 int maxContentH = computeVerticalScrollRange() + getTitleHeight(); 5063 return Math.max(maxContentH - getViewHeightWithTitle(), getTitleHeight()); 5064 } 5065 5066 public void flingScroll(int vx, int vy) { 5067 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5068 int maxY = computeMaxScrollY(); 5069 5070 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 5071 invalidate(); 5072 } 5073 5074 private void doFling() { 5075 if (mVelocityTracker == null) { 5076 return; 5077 } 5078 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5079 int maxY = computeMaxScrollY(); 5080 5081 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5082 int vx = (int) mVelocityTracker.getXVelocity(); 5083 int vy = (int) mVelocityTracker.getYVelocity(); 5084 5085 if (mSnapScrollMode != SNAP_NONE) { 5086 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5087 vy = 0; 5088 } else { 5089 vx = 0; 5090 } 5091 } 5092 5093 if (true /* EMG release: make our fling more like Maps' */) { 5094 // maps cuts their velocity in half 5095 vx = vx * 3 / 4; 5096 vy = vy * 3 / 4; 5097 } 5098 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5099 WebViewCore.resumePriority(); 5100 return; 5101 } 5102 float currentVelocity = mScroller.getCurrVelocity(); 5103 if (mLastVelocity > 0 && currentVelocity > 0) { 5104 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5105 - Math.atan2(vy, vx))); 5106 final float circle = (float) (Math.PI) * 2.0f; 5107 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5108 vx += currentVelocity * mLastVelX / mLastVelocity; 5109 vy += currentVelocity * mLastVelY / mLastVelocity; 5110 if (DebugFlags.WEB_VIEW) { 5111 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5112 } 5113 } else if (DebugFlags.WEB_VIEW) { 5114 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5115 } 5116 } else if (DebugFlags.WEB_VIEW) { 5117 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5118 + " current=" + currentVelocity 5119 + " vx=" + vx + " vy=" + vy 5120 + " maxX=" + maxX + " maxY=" + maxY 5121 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5122 } 5123 mLastVelX = vx; 5124 mLastVelY = vy; 5125 mLastVelocity = (float) Math.hypot(vx, vy); 5126 5127 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 5128 // TODO: duration is calculated based on velocity, if the range is 5129 // small, the animation will stop before duration is up. We may 5130 // want to calculate how long the animation is going to run to precisely 5131 // resume the webcore update. 5132 final int time = mScroller.getDuration(); 5133 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5134 awakenScrollBars(time); 5135 invalidate(); 5136 } 5137 5138 private boolean zoomWithPreview(float scale) { 5139 float oldScale = mActualScale; 5140 mInitialScrollX = mScrollX; 5141 mInitialScrollY = mScrollY; 5142 5143 // snap to DEFAULT_SCALE if it is close 5144 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 5145 scale = mDefaultScale; 5146 } 5147 5148 setNewZoomScale(scale, true, false); 5149 5150 if (oldScale != mActualScale) { 5151 // use mZoomPickerScale to see zoom preview first 5152 mZoomStart = SystemClock.uptimeMillis(); 5153 mInvInitialZoomScale = 1.0f / oldScale; 5154 mInvFinalZoomScale = 1.0f / mActualScale; 5155 mZoomScale = mActualScale; 5156 WebViewCore.pauseUpdatePicture(mWebViewCore); 5157 invalidate(); 5158 return true; 5159 } else { 5160 return false; 5161 } 5162 } 5163 5164 /** 5165 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5166 * in charge of installing this view to the view hierarchy. This view will 5167 * become visible when the user starts scrolling via touch and fade away if 5168 * the user does not interact with it. 5169 * <p/> 5170 * API version 3 introduces a built-in zoom mechanism that is shown 5171 * automatically by the MapView. This is the preferred approach for 5172 * showing the zoom UI. 5173 * 5174 * @deprecated The built-in zoom mechanism is preferred, see 5175 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5176 */ 5177 @Deprecated 5178 public View getZoomControls() { 5179 if (!getSettings().supportZoom()) { 5180 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5181 return null; 5182 } 5183 if (mZoomControls == null) { 5184 mZoomControls = createZoomControls(); 5185 5186 /* 5187 * need to be set to VISIBLE first so that getMeasuredHeight() in 5188 * {@link #onSizeChanged()} can return the measured value for proper 5189 * layout. 5190 */ 5191 mZoomControls.setVisibility(View.VISIBLE); 5192 mZoomControlRunnable = new Runnable() { 5193 public void run() { 5194 5195 /* Don't dismiss the controls if the user has 5196 * focus on them. Wait and check again later. 5197 */ 5198 if (!mZoomControls.hasFocus()) { 5199 mZoomControls.hide(); 5200 } else { 5201 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5202 mPrivateHandler.postDelayed(mZoomControlRunnable, 5203 ZOOM_CONTROLS_TIMEOUT); 5204 } 5205 } 5206 }; 5207 } 5208 return mZoomControls; 5209 } 5210 5211 private ExtendedZoomControls createZoomControls() { 5212 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 5213 , null); 5214 zoomControls.setOnZoomInClickListener(new OnClickListener() { 5215 public void onClick(View v) { 5216 // reset time out 5217 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5218 mPrivateHandler.postDelayed(mZoomControlRunnable, 5219 ZOOM_CONTROLS_TIMEOUT); 5220 zoomIn(); 5221 } 5222 }); 5223 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 5224 public void onClick(View v) { 5225 // reset time out 5226 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5227 mPrivateHandler.postDelayed(mZoomControlRunnable, 5228 ZOOM_CONTROLS_TIMEOUT); 5229 zoomOut(); 5230 } 5231 }); 5232 return zoomControls; 5233 } 5234 5235 /** 5236 * Gets the {@link ZoomButtonsController} which can be used to add 5237 * additional buttons to the zoom controls window. 5238 * 5239 * @return The instance of {@link ZoomButtonsController} used by this class, 5240 * or null if it is unavailable. 5241 * @hide 5242 */ 5243 public ZoomButtonsController getZoomButtonsController() { 5244 return mZoomButtonsController; 5245 } 5246 5247 /** 5248 * Perform zoom in in the webview 5249 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 5250 */ 5251 public boolean zoomIn() { 5252 // TODO: alternatively we can disallow this during draw history mode 5253 switchOutDrawHistory(); 5254 mInZoomOverview = false; 5255 // Center zooming to the center of the screen. 5256 mZoomCenterX = getViewWidth() * .5f; 5257 mZoomCenterY = getViewHeight() * .5f; 5258 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5259 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5260 return zoomWithPreview(mActualScale * 1.25f); 5261 } 5262 5263 /** 5264 * Perform zoom out in the webview 5265 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 5266 */ 5267 public boolean zoomOut() { 5268 // TODO: alternatively we can disallow this during draw history mode 5269 switchOutDrawHistory(); 5270 // Center zooming to the center of the screen. 5271 mZoomCenterX = getViewWidth() * .5f; 5272 mZoomCenterY = getViewHeight() * .5f; 5273 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5274 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5275 return zoomWithPreview(mActualScale * 0.8f); 5276 } 5277 5278 private void updateSelection() { 5279 if (mNativeClass == 0) { 5280 return; 5281 } 5282 // mLastTouchX and mLastTouchY are the point in the current viewport 5283 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5284 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5285 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 5286 contentX + mNavSlop, contentY + mNavSlop); 5287 nativeSelectBestAt(rect); 5288 } 5289 5290 /** 5291 * Scroll the focused text field/area to match the WebTextView 5292 * @param xPercent New x position of the WebTextView from 0 to 1. 5293 * @param y New y position of the WebTextView in view coordinates 5294 */ 5295 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 5296 if (!inEditingMode() || mWebViewCore == null) { 5297 return; 5298 } 5299 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 5300 // Since this position is relative to the top of the text input 5301 // field, we do not need to take the title bar's height into 5302 // consideration. 5303 viewToContentDimension(y), 5304 new Float(xPercent)); 5305 } 5306 5307 /** 5308 * Set our starting point and time for a drag from the WebTextView. 5309 */ 5310 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 5311 if (!inEditingMode()) { 5312 return; 5313 } 5314 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 5315 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 5316 mLastTouchTime = eventTime; 5317 if (!mScroller.isFinished()) { 5318 abortAnimation(); 5319 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5320 } 5321 mSnapScrollMode = SNAP_NONE; 5322 mVelocityTracker = VelocityTracker.obtain(); 5323 mTouchMode = TOUCH_DRAG_START_MODE; 5324 } 5325 5326 /** 5327 * Given a motion event from the WebTextView, set its location to our 5328 * coordinates, and handle the event. 5329 */ 5330 /*package*/ boolean textFieldDrag(MotionEvent event) { 5331 if (!inEditingMode()) { 5332 return false; 5333 } 5334 mDragFromTextInput = true; 5335 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 5336 (float) (mWebTextView.getTop() - mScrollY)); 5337 boolean result = onTouchEvent(event); 5338 mDragFromTextInput = false; 5339 return result; 5340 } 5341 5342 /** 5343 * Due a touch up from a WebTextView. This will be handled by webkit to 5344 * change the selection. 5345 * @param event MotionEvent in the WebTextView's coordinates. 5346 */ 5347 /*package*/ void touchUpOnTextField(MotionEvent event) { 5348 if (!inEditingMode()) { 5349 return; 5350 } 5351 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 5352 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 5353 nativeMotionUp(x, y, mNavSlop); 5354 } 5355 5356 /** 5357 * Called when pressing the center key or trackball on a textfield. 5358 */ 5359 /*package*/ void centerKeyPressOnTextField() { 5360 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 5361 nativeCursorNodePointer()); 5362 } 5363 5364 private void doShortPress() { 5365 if (mNativeClass == 0) { 5366 return; 5367 } 5368 switchOutDrawHistory(); 5369 // mLastTouchX and mLastTouchY are the point in the current viewport 5370 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5371 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5372 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 5373 WebViewCore.MotionUpData motionUpData = new WebViewCore 5374 .MotionUpData(); 5375 motionUpData.mFrame = nativeCacheHitFramePointer(); 5376 motionUpData.mNode = nativeCacheHitNodePointer(); 5377 motionUpData.mBounds = nativeCacheHitNodeBounds(); 5378 motionUpData.mX = contentX; 5379 motionUpData.mY = contentY; 5380 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 5381 motionUpData); 5382 } else { 5383 doMotionUp(contentX, contentY); 5384 } 5385 } 5386 5387 private void doMotionUp(int contentX, int contentY) { 5388 if (nativeMotionUp(contentX, contentY, mNavSlop)) { 5389 if (mLogEvent) { 5390 Checkin.updateStats(mContext.getContentResolver(), 5391 Checkin.Stats.Tag.BROWSER_SNAP_CENTER, 1, 0.0); 5392 } 5393 } 5394 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 5395 playSoundEffect(SoundEffectConstants.CLICK); 5396 } 5397 } 5398 5399 // Rule for double tap: 5400 // 1. if the current scale is not same as the text wrap scale and layout 5401 // algorithm is NARROW_COLUMNS, fit to column; 5402 // 2. if the current state is not overview mode, change to overview mode; 5403 // 3. if the current state is overview mode, change to default scale. 5404 private void doDoubleTap() { 5405 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 5406 return; 5407 } 5408 mZoomCenterX = mLastTouchX; 5409 mZoomCenterY = mLastTouchY; 5410 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5411 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5412 WebSettings settings = getSettings(); 5413 // remove the zoom control after double tap 5414 if (settings.getBuiltInZoomControls()) { 5415 if (mZoomButtonsController.isVisible()) { 5416 mZoomButtonsController.setVisible(false); 5417 } 5418 } else { 5419 if (mZoomControlRunnable != null) { 5420 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5421 } 5422 if (mZoomControls != null) { 5423 mZoomControls.hide(); 5424 } 5425 } 5426 settings.setDoubleTapToastCount(0); 5427 boolean zoomToDefault = false; 5428 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 5429 && (Math.abs(mActualScale - mTextWrapScale) >= 0.01f)) { 5430 setNewZoomScale(mActualScale, true, true); 5431 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 5432 if (Math.abs(mActualScale - overviewScale) < 0.01f) { 5433 mInZoomOverview = true; 5434 } 5435 } else if (!mInZoomOverview) { 5436 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 5437 if (Math.abs(mActualScale - newScale) >= 0.01f) { 5438 mInZoomOverview = true; 5439 // Force the titlebar fully reveal in overview mode 5440 if (mScrollY < getTitleHeight()) mScrollY = 0; 5441 zoomWithPreview(newScale); 5442 } else if (Math.abs(mActualScale - mDefaultScale) >= 0.01f) { 5443 zoomToDefault = true; 5444 } 5445 } else { 5446 zoomToDefault = true; 5447 } 5448 if (zoomToDefault) { 5449 mInZoomOverview = false; 5450 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 5451 if (left != NO_LEFTEDGE) { 5452 // add a 5pt padding to the left edge. 5453 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 5454 - mScrollX; 5455 // Re-calculate the zoom center so that the new scroll x will be 5456 // on the left edge. 5457 if (viewLeft > 0) { 5458 mZoomCenterX = viewLeft * mDefaultScale 5459 / (mDefaultScale - mActualScale); 5460 } else { 5461 scrollBy(viewLeft, 0); 5462 mZoomCenterX = 0; 5463 } 5464 } 5465 zoomWithPreview(mDefaultScale); 5466 } 5467 } 5468 5469 // Called by JNI to handle a touch on a node representing an email address, 5470 // address, or phone number 5471 private void overrideLoading(String url) { 5472 mCallbackProxy.uiOverrideUrlLoading(url); 5473 } 5474 5475 @Override 5476 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 5477 boolean result = false; 5478 if (inEditingMode()) { 5479 result = mWebTextView.requestFocus(direction, 5480 previouslyFocusedRect); 5481 } else { 5482 result = super.requestFocus(direction, previouslyFocusedRect); 5483 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 5484 // For cases such as GMail, where we gain focus from a direction, 5485 // we want to move to the first available link. 5486 // FIXME: If there are no visible links, we may not want to 5487 int fakeKeyDirection = 0; 5488 switch(direction) { 5489 case View.FOCUS_UP: 5490 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 5491 break; 5492 case View.FOCUS_DOWN: 5493 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 5494 break; 5495 case View.FOCUS_LEFT: 5496 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 5497 break; 5498 case View.FOCUS_RIGHT: 5499 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 5500 break; 5501 default: 5502 return result; 5503 } 5504 if (mNativeClass != 0 && !nativeHasCursorNode()) { 5505 navHandledKey(fakeKeyDirection, 1, true, 0, true); 5506 } 5507 } 5508 } 5509 return result; 5510 } 5511 5512 @Override 5513 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5514 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 5515 5516 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5517 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5518 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5519 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5520 5521 int measuredHeight = heightSize; 5522 int measuredWidth = widthSize; 5523 5524 // Grab the content size from WebViewCore. 5525 int contentHeight = contentToViewDimension(mContentHeight); 5526 int contentWidth = contentToViewDimension(mContentWidth); 5527 5528// Log.d(LOGTAG, "------- measure " + heightMode); 5529 5530 if (heightMode != MeasureSpec.EXACTLY) { 5531 mHeightCanMeasure = true; 5532 measuredHeight = contentHeight; 5533 if (heightMode == MeasureSpec.AT_MOST) { 5534 // If we are larger than the AT_MOST height, then our height can 5535 // no longer be measured and we should scroll internally. 5536 if (measuredHeight > heightSize) { 5537 measuredHeight = heightSize; 5538 mHeightCanMeasure = false; 5539 } 5540 } 5541 } else { 5542 mHeightCanMeasure = false; 5543 } 5544 if (mNativeClass != 0) { 5545 nativeSetHeightCanMeasure(mHeightCanMeasure); 5546 } 5547 // For the width, always use the given size unless unspecified. 5548 if (widthMode == MeasureSpec.UNSPECIFIED) { 5549 mWidthCanMeasure = true; 5550 measuredWidth = contentWidth; 5551 } else { 5552 mWidthCanMeasure = false; 5553 } 5554 5555 synchronized (this) { 5556 setMeasuredDimension(measuredWidth, measuredHeight); 5557 } 5558 } 5559 5560 @Override 5561 public boolean requestChildRectangleOnScreen(View child, 5562 Rect rect, 5563 boolean immediate) { 5564 rect.offset(child.getLeft() - child.getScrollX(), 5565 child.getTop() - child.getScrollY()); 5566 5567 int height = getViewHeightWithTitle(); 5568 int screenTop = mScrollY; 5569 int screenBottom = screenTop + height; 5570 5571 int scrollYDelta = 0; 5572 5573 if (rect.bottom > screenBottom) { 5574 int oneThirdOfScreenHeight = height / 3; 5575 if (rect.height() > 2 * oneThirdOfScreenHeight) { 5576 // If the rectangle is too tall to fit in the bottom two thirds 5577 // of the screen, place it at the top. 5578 scrollYDelta = rect.top - screenTop; 5579 } else { 5580 // If the rectangle will still fit on screen, we want its 5581 // top to be in the top third of the screen. 5582 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 5583 } 5584 } else if (rect.top < screenTop) { 5585 scrollYDelta = rect.top - screenTop; 5586 } 5587 5588 int width = getWidth() - getVerticalScrollbarWidth(); 5589 int screenLeft = mScrollX; 5590 int screenRight = screenLeft + width; 5591 5592 int scrollXDelta = 0; 5593 5594 if (rect.right > screenRight && rect.left > screenLeft) { 5595 if (rect.width() > width) { 5596 scrollXDelta += (rect.left - screenLeft); 5597 } else { 5598 scrollXDelta += (rect.right - screenRight); 5599 } 5600 } else if (rect.left < screenLeft) { 5601 scrollXDelta -= (screenLeft - rect.left); 5602 } 5603 5604 if ((scrollYDelta | scrollXDelta) != 0) { 5605 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 5606 } 5607 5608 return false; 5609 } 5610 5611 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 5612 String replace, int newStart, int newEnd) { 5613 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 5614 arg.mReplace = replace; 5615 arg.mNewStart = newStart; 5616 arg.mNewEnd = newEnd; 5617 mTextGeneration++; 5618 arg.mTextGeneration = mTextGeneration; 5619 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 5620 } 5621 5622 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 5623 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 5624 arg.mEvent = event; 5625 arg.mCurrentText = currentText; 5626 // Increase our text generation number, and pass it to webcore thread 5627 mTextGeneration++; 5628 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 5629 // WebKit's document state is not saved until about to leave the page. 5630 // To make sure the host application, like Browser, has the up to date 5631 // document state when it goes to background, we force to save the 5632 // document state. 5633 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 5634 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 5635 cursorData(), 1000); 5636 } 5637 5638 /* package */ WebViewCore getWebViewCore() { 5639 return mWebViewCore; 5640 } 5641 5642 //------------------------------------------------------------------------- 5643 // Methods can be called from a separate thread, like WebViewCore 5644 // If it needs to call the View system, it has to send message. 5645 //------------------------------------------------------------------------- 5646 5647 /** 5648 * General handler to receive message coming from webkit thread 5649 */ 5650 class PrivateHandler extends Handler { 5651 @Override 5652 public void handleMessage(Message msg) { 5653 // exclude INVAL_RECT_MSG_ID since it is frequently output 5654 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 5655 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 5656 > FIND_AGAIN ? Integer.toString(msg.what) 5657 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 5658 } 5659 if (mWebViewCore == null) { 5660 // after WebView's destroy() is called, skip handling messages. 5661 return; 5662 } 5663 switch (msg.what) { 5664 case REMEMBER_PASSWORD: { 5665 mDatabase.setUsernamePassword( 5666 msg.getData().getString("host"), 5667 msg.getData().getString("username"), 5668 msg.getData().getString("password")); 5669 ((Message) msg.obj).sendToTarget(); 5670 break; 5671 } 5672 case NEVER_REMEMBER_PASSWORD: { 5673 mDatabase.setUsernamePassword( 5674 msg.getData().getString("host"), null, null); 5675 ((Message) msg.obj).sendToTarget(); 5676 break; 5677 } 5678 case SWITCH_TO_SHORTPRESS: { 5679 // if mPreventDrag is not confirmed, treat it as no so that 5680 // it won't block panning the page. 5681 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5682 mPreventDrag = PREVENT_DRAG_NO; 5683 mPreventLongPress = false; 5684 mPreventDoubleTap = false; 5685 } 5686 if (mTouchMode == TOUCH_INIT_MODE) { 5687 mTouchMode = mFullScreenHolder == null 5688 ? TOUCH_SHORTPRESS_START_MODE 5689 : TOUCH_SHORTPRESS_MODE; 5690 updateSelection(); 5691 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5692 mTouchMode = TOUCH_DONE_MODE; 5693 } 5694 break; 5695 } 5696 case SWITCH_TO_LONGPRESS: { 5697 if (mPreventLongPress) { 5698 mTouchMode = TOUCH_DONE_MODE; 5699 WebViewCore.TouchEventData ted 5700 = new WebViewCore.TouchEventData(); 5701 ted.mAction = WebViewCore.ACTION_LONGPRESS; 5702 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 5703 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 5704 ted.mEventTime = SystemClock.uptimeMillis(); 5705 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5706 } else if (mPreventDrag == PREVENT_DRAG_NO) { 5707 mTouchMode = TOUCH_DONE_MODE; 5708 if (mFullScreenHolder == null) { 5709 performLongClick(); 5710 rebuildWebTextView(); 5711 } 5712 } 5713 break; 5714 } 5715 case RELEASE_SINGLE_TAP: { 5716 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5717 // if mPreventDrag is not confirmed, treat it as 5718 // no so that it won't block tap. 5719 mPreventDrag = PREVENT_DRAG_NO; 5720 mPreventLongPress = false; 5721 mPreventDoubleTap = false; 5722 } 5723 if (mPreventDrag == PREVENT_DRAG_NO) { 5724 mTouchMode = TOUCH_DONE_MODE; 5725 doShortPress(); 5726 } 5727 break; 5728 } 5729 case SCROLL_BY_MSG_ID: 5730 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 5731 break; 5732 case SYNC_SCROLL_TO_MSG_ID: 5733 if (mUserScroll) { 5734 // if user has scrolled explicitly, don't sync the 5735 // scroll position any more 5736 mUserScroll = false; 5737 break; 5738 } 5739 // fall through 5740 case SCROLL_TO_MSG_ID: 5741 if (setContentScrollTo(msg.arg1, msg.arg2)) { 5742 // if we can't scroll to the exact position due to pin, 5743 // send a message to WebCore to re-scroll when we get a 5744 // new picture 5745 mUserScroll = false; 5746 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 5747 msg.arg1, msg.arg2); 5748 } 5749 break; 5750 case SPAWN_SCROLL_TO_MSG_ID: 5751 spawnContentScrollTo(msg.arg1, msg.arg2); 5752 break; 5753 case UPDATE_ZOOM_RANGE: { 5754 WebViewCore.RestoreState restoreState 5755 = (WebViewCore.RestoreState) msg.obj; 5756 // mScrollX contains the new minPrefWidth 5757 updateZoomRange(restoreState, getViewWidth(), 5758 restoreState.mScrollX, false); 5759 break; 5760 } 5761 case NEW_PICTURE_MSG_ID: { 5762 WebSettings settings = mWebViewCore.getSettings(); 5763 // called for new content 5764 final int viewWidth = getViewWidth(); 5765 final WebViewCore.DrawData draw = 5766 (WebViewCore.DrawData) msg.obj; 5767 final Point viewSize = draw.mViewPoint; 5768 boolean useWideViewport = settings.getUseWideViewPort(); 5769 WebViewCore.RestoreState restoreState = draw.mRestoreState; 5770 boolean hasRestoreState = restoreState != null; 5771 if (hasRestoreState) { 5772 mInZoomOverview = false; 5773 updateZoomRange(restoreState, viewSize.x, 5774 draw.mMinPrefWidth, true); 5775 if (mInitialScaleInPercent > 0) { 5776 setNewZoomScale(mInitialScaleInPercent / 100.0f, 5777 mInitialScaleInPercent != mTextWrapScale * 100, 5778 false); 5779 } else if (restoreState.mViewScale > 0) { 5780 mTextWrapScale = restoreState.mTextWrapScale; 5781 setNewZoomScale(restoreState.mViewScale, false, 5782 false); 5783 } else { 5784 mInZoomOverview = useWideViewport 5785 && settings.getLoadWithOverviewMode(); 5786 float scale; 5787 if (mInZoomOverview) { 5788 scale = (float) viewWidth 5789 / DEFAULT_VIEWPORT_WIDTH; 5790 } else { 5791 scale = restoreState.mTextWrapScale; 5792 } 5793 setNewZoomScale(scale, Math.abs(scale 5794 - mTextWrapScale) >= 0.01f, false); 5795 } 5796 setContentScrollTo(restoreState.mScrollX, 5797 restoreState.mScrollY); 5798 // As we are on a new page, remove the WebTextView. This 5799 // is necessary for page loads driven by webkit, and in 5800 // particular when the user was on a password field, so 5801 // the WebTextView was visible. 5802 clearTextEntry(); 5803 // update the zoom buttons as the scale can be changed 5804 if (getSettings().getBuiltInZoomControls()) { 5805 updateZoomButtonsEnabled(); 5806 } 5807 } 5808 // We update the layout (i.e. request a layout from the 5809 // view system) if the last view size that we sent to 5810 // WebCore matches the view size of the picture we just 5811 // received in the fixed dimension. 5812 final boolean updateLayout = viewSize.x == mLastWidthSent 5813 && viewSize.y == mLastHeightSent; 5814 recordNewContentSize(draw.mWidthHeight.x, 5815 draw.mWidthHeight.y 5816 + (mFindIsUp ? mFindHeight : 0), updateLayout); 5817 if (DebugFlags.WEB_VIEW) { 5818 Rect b = draw.mInvalRegion.getBounds(); 5819 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 5820 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 5821 } 5822 invalidateContentRect(draw.mInvalRegion.getBounds()); 5823 if (mPictureListener != null) { 5824 mPictureListener.onNewPicture(WebView.this, capturePicture()); 5825 } 5826 if (useWideViewport) { 5827 // limit mZoomOverviewWidth upper bound to 5828 // sMaxViewportWidth so that if the page doesn't behave 5829 // well, the WebView won't go insane. limit the lower 5830 // bound to match the default scale for mobile sites. 5831 mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math 5832 .max((int) (viewWidth / mDefaultScale), Math 5833 .max(draw.mMinPrefWidth, 5834 draw.mViewPoint.x))); 5835 } 5836 if (!mMinZoomScaleFixed) { 5837 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 5838 } 5839 if (!mDrawHistory && mInZoomOverview) { 5840 // fit the content width to the current view. Ignore 5841 // the rounding error case. 5842 if (Math.abs((viewWidth * mInvActualScale) 5843 - mZoomOverviewWidth) > 1) { 5844 setNewZoomScale((float) viewWidth 5845 / mZoomOverviewWidth, Math.abs(mActualScale 5846 - mTextWrapScale) < 0.01f, false); 5847 } 5848 } 5849 if (draw.mFocusSizeChanged && inEditingMode()) { 5850 mFocusSizeChanged = true; 5851 } 5852 if (hasRestoreState) { 5853 mViewManager.postReadyToDrawAll(); 5854 } 5855 break; 5856 } 5857 case WEBCORE_INITIALIZED_MSG_ID: 5858 // nativeCreate sets mNativeClass to a non-zero value 5859 nativeCreate(msg.arg1); 5860 break; 5861 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 5862 // Make sure that the textfield is currently focused 5863 // and representing the same node as the pointer. 5864 if (inEditingMode() && 5865 mWebTextView.isSameTextField(msg.arg1)) { 5866 if (msg.getData().getBoolean("password")) { 5867 Spannable text = (Spannable) mWebTextView.getText(); 5868 int start = Selection.getSelectionStart(text); 5869 int end = Selection.getSelectionEnd(text); 5870 mWebTextView.setInPassword(true); 5871 // Restore the selection, which may have been 5872 // ruined by setInPassword. 5873 Spannable pword = 5874 (Spannable) mWebTextView.getText(); 5875 Selection.setSelection(pword, start, end); 5876 // If the text entry has created more events, ignore 5877 // this one. 5878 } else if (msg.arg2 == mTextGeneration) { 5879 mWebTextView.setTextAndKeepSelection( 5880 (String) msg.obj); 5881 } 5882 } 5883 break; 5884 case UPDATE_TEXT_SELECTION_MSG_ID: 5885 if (inEditingMode() 5886 && mWebTextView.isSameTextField(msg.arg1) 5887 && msg.arg2 == mTextGeneration) { 5888 WebViewCore.TextSelectionData tData 5889 = (WebViewCore.TextSelectionData) msg.obj; 5890 mWebTextView.setSelectionFromWebKit(tData.mStart, 5891 tData.mEnd); 5892 } 5893 break; 5894 case RETURN_LABEL: 5895 if (inEditingMode() 5896 && mWebTextView.isSameTextField(msg.arg1)) { 5897 mWebTextView.setHint((String) msg.obj); 5898 InputMethodManager imm 5899 = InputMethodManager.peekInstance(); 5900 // The hint is propagated to the IME in 5901 // onCreateInputConnection. If the IME is already 5902 // active, restart it so that its hint text is updated. 5903 if (imm != null && imm.isActive(mWebTextView)) { 5904 imm.restartInput(mWebTextView); 5905 } 5906 } 5907 break; 5908 case MOVE_OUT_OF_PLUGIN: 5909 navHandledKey(msg.arg1, 1, false, 0, true); 5910 break; 5911 case UPDATE_TEXT_ENTRY_MSG_ID: 5912 // this is sent after finishing resize in WebViewCore. Make 5913 // sure the text edit box is still on the screen. 5914 if (inEditingMode() && nativeCursorIsTextInput()) { 5915 mWebTextView.bringIntoView(); 5916 rebuildWebTextView(); 5917 } 5918 break; 5919 case CLEAR_TEXT_ENTRY: 5920 clearTextEntry(); 5921 break; 5922 case INVAL_RECT_MSG_ID: { 5923 Rect r = (Rect)msg.obj; 5924 if (r == null) { 5925 invalidate(); 5926 } else { 5927 // we need to scale r from content into view coords, 5928 // which viewInvalidate() does for us 5929 viewInvalidate(r.left, r.top, r.right, r.bottom); 5930 } 5931 break; 5932 } 5933 case IMMEDIATE_REPAINT_MSG_ID: { 5934 int updates = msg.arg1; 5935 if (updates != 0) { 5936 // updates is a C++ pointer to a Vector of 5937 // AnimationValues that we apply to the layers. 5938 // The Vector is deallocated in nativeUpdateLayers(). 5939 nativeUpdateLayers(updates); 5940 } 5941 invalidate(); 5942 break; 5943 } 5944 case SET_ROOT_LAYER_MSG_ID: { 5945 int oldLayer = mRootLayer; 5946 mRootLayer = msg.arg1; 5947 if (oldLayer > 0) { 5948 nativeDestroyLayer(oldLayer); 5949 } 5950 if (mRootLayer == 0) { 5951 mLayersHaveAnimations = false; 5952 } 5953 if (mEvaluateThread != null) { 5954 mEvaluateThread.cancel(); 5955 mEvaluateThread = null; 5956 } 5957 if (nativeLayersHaveAnimations(mRootLayer)) { 5958 mLayersHaveAnimations = true; 5959 mEvaluateThread = new EvaluateLayersAnimations(); 5960 mEvaluateThread.start(); 5961 } 5962 invalidate(); 5963 break; 5964 } 5965 case REQUEST_FORM_DATA: 5966 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 5967 if (mWebTextView.isSameTextField(msg.arg1)) { 5968 mWebTextView.setAdapterCustom(adapter); 5969 } 5970 break; 5971 case RESUME_WEBCORE_PRIORITY: 5972 WebViewCore.resumePriority(); 5973 break; 5974 5975 case LONG_PRESS_CENTER: 5976 // as this is shared by keydown and trackballdown, reset all 5977 // the states 5978 mGotCenterDown = false; 5979 mTrackballDown = false; 5980 performLongClick(); 5981 break; 5982 5983 case WEBCORE_NEED_TOUCH_EVENTS: 5984 mForwardTouchEvents = (msg.arg1 != 0); 5985 break; 5986 5987 case PREVENT_TOUCH_ID: 5988 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 5989 // dont override if mPreventDrag has been set to no due 5990 // to time out 5991 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5992 mPreventDrag = (msg.arg2 & TOUCH_PREVENT_DRAG) 5993 == TOUCH_PREVENT_DRAG ? PREVENT_DRAG_YES 5994 : PREVENT_DRAG_NO; 5995 if (mPreventDrag == PREVENT_DRAG_YES) { 5996 mTouchMode = TOUCH_DONE_MODE; 5997 } else { 5998 mPreventLongPress = 5999 (msg.arg2 & TOUCH_PREVENT_LONGPRESS) 6000 == TOUCH_PREVENT_LONGPRESS; 6001 mPreventDoubleTap = 6002 (msg.arg2 & TOUCH_PREVENT_DOUBLETAP) 6003 == TOUCH_PREVENT_DOUBLETAP; 6004 } 6005 } 6006 } 6007 break; 6008 6009 case REQUEST_KEYBOARD: 6010 if (msg.arg1 == 0) { 6011 hideSoftKeyboard(); 6012 } else { 6013 displaySoftKeyboard(1 == msg.arg2); 6014 } 6015 break; 6016 6017 case FIND_AGAIN: 6018 // Ignore if find has been dismissed. 6019 if (mFindIsUp) { 6020 findAll(mLastFind); 6021 } 6022 break; 6023 6024 case DRAG_HELD_MOTIONLESS: 6025 mHeldMotionless = MOTIONLESS_TRUE; 6026 invalidate(); 6027 // fall through to keep scrollbars awake 6028 6029 case AWAKEN_SCROLL_BARS: 6030 if (mTouchMode == TOUCH_DRAG_MODE 6031 && mHeldMotionless == MOTIONLESS_TRUE) { 6032 awakenScrollBars(ViewConfiguration 6033 .getScrollDefaultDelay(), false); 6034 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6035 .obtainMessage(AWAKEN_SCROLL_BARS), 6036 ViewConfiguration.getScrollDefaultDelay()); 6037 } 6038 break; 6039 6040 case DO_MOTION_UP: 6041 doMotionUp(msg.arg1, msg.arg2); 6042 break; 6043 6044 case SHOW_FULLSCREEN: { 6045 WebViewCore.PluginFullScreenData data 6046 = (WebViewCore.PluginFullScreenData) msg.obj; 6047 if (data.mNpp != 0 && data.mView != null) { 6048 if (mFullScreenHolder != null) { 6049 Log.w(LOGTAG, 6050 "Should not have another full screen."); 6051 mFullScreenHolder.dismiss(); 6052 } 6053 mFullScreenHolder = new PluginFullScreenHolder( 6054 WebView.this, data.mNpp); 6055 // as we are sharing the View between full screen and 6056 // embedded mode, we have to remove the 6057 // AbsoluteLayout.LayoutParams set by embedded mode to 6058 // ViewGroup.LayoutParams before adding it to the dialog 6059 data.mView.setLayoutParams(new ViewGroup.LayoutParams( 6060 ViewGroup.LayoutParams.FILL_PARENT, 6061 ViewGroup.LayoutParams.FILL_PARENT)); 6062 mFullScreenHolder.setContentView(data.mView); 6063 mFullScreenHolder.setCancelable(false); 6064 mFullScreenHolder.setCanceledOnTouchOutside(false); 6065 mFullScreenHolder.show(); 6066 } else if (mFullScreenHolder == null) { 6067 // this may happen if user dismisses the fullscreen and 6068 // then the WebCore re-position message finally reached 6069 // the UI thread. 6070 break; 6071 } 6072 // move the matching embedded view fully into the view so 6073 // that touch will be valid instead of rejected due to out 6074 // of the visible bounds 6075 // TODO: do we need to preserve the original position and 6076 // scale so that we can revert it when leaving the full 6077 // screen mode? 6078 int x = contentToViewX(data.mDocX); 6079 int y = contentToViewY(data.mDocY); 6080 int width = contentToViewDimension(data.mDocWidth); 6081 int height = contentToViewDimension(data.mDocHeight); 6082 int viewWidth = getViewWidth(); 6083 int viewHeight = getViewHeight(); 6084 int newX = mScrollX; 6085 int newY = mScrollY; 6086 if (x < mScrollX) { 6087 newX = x + (width > viewWidth 6088 ? (width - viewWidth) / 2 : 0); 6089 } else if (x + width > mScrollX + viewWidth) { 6090 newX = x + width - viewWidth - (width > viewWidth 6091 ? (width - viewWidth) / 2 : 0); 6092 } 6093 if (y < mScrollY) { 6094 newY = y + (height > viewHeight 6095 ? (height - viewHeight) / 2 : 0); 6096 } else if (y + height > mScrollY + viewHeight) { 6097 newY = y + height - viewHeight - (height > viewHeight 6098 ? (height - viewHeight) / 2 : 0); 6099 } 6100 scrollTo(newX, newY); 6101 if (width > viewWidth || height > viewHeight) { 6102 mZoomCenterX = viewWidth * .5f; 6103 mZoomCenterY = viewHeight * .5f; 6104 // do not change text wrap scale so that there is no 6105 // reflow 6106 setNewZoomScale(mActualScale 6107 / Math.max((float) width / viewWidth, 6108 (float) height / viewHeight), false, 6109 false); 6110 } 6111 // Now update the bound 6112 mFullScreenHolder.updateBound(contentToViewX(data.mDocX) 6113 - mScrollX, contentToViewY(data.mDocY) - mScrollY, 6114 contentToViewDimension(data.mDocWidth), 6115 contentToViewDimension(data.mDocHeight)); 6116 } 6117 break; 6118 6119 case HIDE_FULLSCREEN: 6120 if (mFullScreenHolder != null) { 6121 mFullScreenHolder.dismiss(); 6122 mFullScreenHolder = null; 6123 } 6124 break; 6125 6126 case DOM_FOCUS_CHANGED: 6127 if (inEditingMode()) { 6128 nativeClearCursor(); 6129 rebuildWebTextView(); 6130 } 6131 break; 6132 6133 case SHOW_RECT_MSG_ID: { 6134 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6135 int x = mScrollX; 6136 int left = contentToViewX(data.mLeft); 6137 int width = contentToViewDimension(data.mWidth); 6138 int maxWidth = contentToViewDimension(data.mContentWidth); 6139 int viewWidth = getViewWidth(); 6140 if (width < viewWidth) { 6141 // center align 6142 x += left + width / 2 - mScrollX - viewWidth / 2; 6143 } else { 6144 x += (int) (left + data.mXPercentInDoc * width 6145 - mScrollX - data.mXPercentInView * viewWidth); 6146 } 6147 if (DebugFlags.WEB_VIEW) { 6148 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6149 width + ",maxWidth=" + maxWidth + 6150 ",viewWidth=" + viewWidth + ",x=" 6151 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6152 ",xPercentInView=" + data.mXPercentInView+ ")"); 6153 } 6154 // use the passing content width to cap x as the current 6155 // mContentWidth may not be updated yet 6156 x = Math.max(0, 6157 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6158 int top = contentToViewY(data.mTop); 6159 int height = contentToViewDimension(data.mHeight); 6160 int maxHeight = contentToViewDimension(data.mContentHeight); 6161 int viewHeight = getViewHeight(); 6162 int y = (int) (top + data.mYPercentInDoc * height - 6163 data.mYPercentInView * viewHeight); 6164 if (DebugFlags.WEB_VIEW) { 6165 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6166 height + ",maxHeight=" + maxHeight + 6167 ",viewHeight=" + viewHeight + ",y=" 6168 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6169 ",yPercentInView=" + data.mYPercentInView+ ")"); 6170 } 6171 // use the passing content height to cap y as the current 6172 // mContentHeight may not be updated yet 6173 y = Math.max(0, 6174 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6175 scrollTo(x, y); 6176 } 6177 break; 6178 6179 default: 6180 super.handleMessage(msg); 6181 break; 6182 } 6183 } 6184 } 6185 6186 // Class used to use a dropdown for a <select> element 6187 private class InvokeListBox implements Runnable { 6188 // Whether the listbox allows multiple selection. 6189 private boolean mMultiple; 6190 // Passed in to a list with multiple selection to tell 6191 // which items are selected. 6192 private int[] mSelectedArray; 6193 // Passed in to a list with single selection to tell 6194 // where the initial selection is. 6195 private int mSelection; 6196 6197 private Container[] mContainers; 6198 6199 // Need these to provide stable ids to my ArrayAdapter, 6200 // which normally does not have stable ids. (Bug 1250098) 6201 private class Container extends Object { 6202 /** 6203 * Possible values for mEnabled. Keep in sync with OptionStatus in 6204 * WebViewCore.cpp 6205 */ 6206 final static int OPTGROUP = -1; 6207 final static int OPTION_DISABLED = 0; 6208 final static int OPTION_ENABLED = 1; 6209 6210 String mString; 6211 int mEnabled; 6212 int mId; 6213 6214 public String toString() { 6215 return mString; 6216 } 6217 } 6218 6219 /** 6220 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6221 * and allow filtering. 6222 */ 6223 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6224 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6225 super(context, 6226 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6227 com.android.internal.R.layout.select_dialog_singlechoice, 6228 objects); 6229 } 6230 6231 @Override 6232 public View getView(int position, View convertView, 6233 ViewGroup parent) { 6234 // Always pass in null so that we will get a new CheckedTextView 6235 // Otherwise, an item which was previously used as an <optgroup> 6236 // element (i.e. has no check), could get used as an <option> 6237 // element, which needs a checkbox/radio, but it would not have 6238 // one. 6239 convertView = super.getView(position, null, parent); 6240 Container c = item(position); 6241 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6242 // ListView does not draw dividers between disabled and 6243 // enabled elements. Use a LinearLayout to provide dividers 6244 LinearLayout layout = new LinearLayout(mContext); 6245 layout.setOrientation(LinearLayout.VERTICAL); 6246 if (position > 0) { 6247 View dividerTop = new View(mContext); 6248 dividerTop.setBackgroundResource( 6249 android.R.drawable.divider_horizontal_bright); 6250 layout.addView(dividerTop); 6251 } 6252 6253 if (Container.OPTGROUP == c.mEnabled) { 6254 // Currently select_dialog_multichoice and 6255 // select_dialog_singlechoice are CheckedTextViews. If 6256 // that changes, the class cast will no longer be valid. 6257 Assert.assertTrue( 6258 convertView instanceof CheckedTextView); 6259 ((CheckedTextView) convertView).setCheckMarkDrawable( 6260 null); 6261 } else { 6262 // c.mEnabled == Container.OPTION_DISABLED 6263 // Draw the disabled element in a disabled state. 6264 convertView.setEnabled(false); 6265 } 6266 6267 layout.addView(convertView); 6268 if (position < getCount() - 1) { 6269 View dividerBottom = new View(mContext); 6270 dividerBottom.setBackgroundResource( 6271 android.R.drawable.divider_horizontal_bright); 6272 layout.addView(dividerBottom); 6273 } 6274 return layout; 6275 } 6276 return convertView; 6277 } 6278 6279 @Override 6280 public boolean hasStableIds() { 6281 // AdapterView's onChanged method uses this to determine whether 6282 // to restore the old state. Return false so that the old (out 6283 // of date) state does not replace the new, valid state. 6284 return false; 6285 } 6286 6287 private Container item(int position) { 6288 if (position < 0 || position >= getCount()) { 6289 return null; 6290 } 6291 return (Container) getItem(position); 6292 } 6293 6294 @Override 6295 public long getItemId(int position) { 6296 Container item = item(position); 6297 if (item == null) { 6298 return -1; 6299 } 6300 return item.mId; 6301 } 6302 6303 @Override 6304 public boolean areAllItemsEnabled() { 6305 return false; 6306 } 6307 6308 @Override 6309 public boolean isEnabled(int position) { 6310 Container item = item(position); 6311 if (item == null) { 6312 return false; 6313 } 6314 return Container.OPTION_ENABLED == item.mEnabled; 6315 } 6316 } 6317 6318 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 6319 mMultiple = true; 6320 mSelectedArray = selected; 6321 6322 int length = array.length; 6323 mContainers = new Container[length]; 6324 for (int i = 0; i < length; i++) { 6325 mContainers[i] = new Container(); 6326 mContainers[i].mString = array[i]; 6327 mContainers[i].mEnabled = enabled[i]; 6328 mContainers[i].mId = i; 6329 } 6330 } 6331 6332 private InvokeListBox(String[] array, int[] enabled, int selection) { 6333 mSelection = selection; 6334 mMultiple = false; 6335 6336 int length = array.length; 6337 mContainers = new Container[length]; 6338 for (int i = 0; i < length; i++) { 6339 mContainers[i] = new Container(); 6340 mContainers[i].mString = array[i]; 6341 mContainers[i].mEnabled = enabled[i]; 6342 mContainers[i].mId = i; 6343 } 6344 } 6345 6346 /* 6347 * Whenever the data set changes due to filtering, this class ensures 6348 * that the checked item remains checked. 6349 */ 6350 private class SingleDataSetObserver extends DataSetObserver { 6351 private long mCheckedId; 6352 private ListView mListView; 6353 private Adapter mAdapter; 6354 6355 /* 6356 * Create a new observer. 6357 * @param id The ID of the item to keep checked. 6358 * @param l ListView for getting and clearing the checked states 6359 * @param a Adapter for getting the IDs 6360 */ 6361 public SingleDataSetObserver(long id, ListView l, Adapter a) { 6362 mCheckedId = id; 6363 mListView = l; 6364 mAdapter = a; 6365 } 6366 6367 public void onChanged() { 6368 // The filter may have changed which item is checked. Find the 6369 // item that the ListView thinks is checked. 6370 int position = mListView.getCheckedItemPosition(); 6371 long id = mAdapter.getItemId(position); 6372 if (mCheckedId != id) { 6373 // Clear the ListView's idea of the checked item, since 6374 // it is incorrect 6375 mListView.clearChoices(); 6376 // Search for mCheckedId. If it is in the filtered list, 6377 // mark it as checked 6378 int count = mAdapter.getCount(); 6379 for (int i = 0; i < count; i++) { 6380 if (mAdapter.getItemId(i) == mCheckedId) { 6381 mListView.setItemChecked(i, true); 6382 break; 6383 } 6384 } 6385 } 6386 } 6387 6388 public void onInvalidate() {} 6389 } 6390 6391 public void run() { 6392 final ListView listView = (ListView) LayoutInflater.from(mContext) 6393 .inflate(com.android.internal.R.layout.select_dialog, null); 6394 final MyArrayListAdapter adapter = new 6395 MyArrayListAdapter(mContext, mContainers, mMultiple); 6396 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 6397 .setView(listView).setCancelable(true) 6398 .setInverseBackgroundForced(true); 6399 6400 if (mMultiple) { 6401 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 6402 public void onClick(DialogInterface dialog, int which) { 6403 mWebViewCore.sendMessage( 6404 EventHub.LISTBOX_CHOICES, 6405 adapter.getCount(), 0, 6406 listView.getCheckedItemPositions()); 6407 }}); 6408 b.setNegativeButton(android.R.string.cancel, 6409 new DialogInterface.OnClickListener() { 6410 public void onClick(DialogInterface dialog, int which) { 6411 mWebViewCore.sendMessage( 6412 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6413 }}); 6414 } 6415 final AlertDialog dialog = b.create(); 6416 listView.setAdapter(adapter); 6417 listView.setFocusableInTouchMode(true); 6418 // There is a bug (1250103) where the checks in a ListView with 6419 // multiple items selected are associated with the positions, not 6420 // the ids, so the items do not properly retain their checks when 6421 // filtered. Do not allow filtering on multiple lists until 6422 // that bug is fixed. 6423 6424 listView.setTextFilterEnabled(!mMultiple); 6425 if (mMultiple) { 6426 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 6427 int length = mSelectedArray.length; 6428 for (int i = 0; i < length; i++) { 6429 listView.setItemChecked(mSelectedArray[i], true); 6430 } 6431 } else { 6432 listView.setOnItemClickListener(new OnItemClickListener() { 6433 public void onItemClick(AdapterView parent, View v, 6434 int position, long id) { 6435 mWebViewCore.sendMessage( 6436 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 6437 dialog.dismiss(); 6438 } 6439 }); 6440 if (mSelection != -1) { 6441 listView.setSelection(mSelection); 6442 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 6443 listView.setItemChecked(mSelection, true); 6444 DataSetObserver observer = new SingleDataSetObserver( 6445 adapter.getItemId(mSelection), listView, adapter); 6446 adapter.registerDataSetObserver(observer); 6447 } 6448 } 6449 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 6450 public void onCancel(DialogInterface dialog) { 6451 mWebViewCore.sendMessage( 6452 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6453 } 6454 }); 6455 dialog.show(); 6456 } 6457 } 6458 6459 /* 6460 * Request a dropdown menu for a listbox with multiple selection. 6461 * 6462 * @param array Labels for the listbox. 6463 * @param enabledArray State for each element in the list. See static 6464 * integers in Container class. 6465 * @param selectedArray Which positions are initally selected. 6466 */ 6467 void requestListBox(String[] array, int[] enabledArray, int[] 6468 selectedArray) { 6469 mPrivateHandler.post( 6470 new InvokeListBox(array, enabledArray, selectedArray)); 6471 } 6472 6473 private void updateZoomRange(WebViewCore.RestoreState restoreState, 6474 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 6475 if (restoreState.mMinScale == 0) { 6476 if (restoreState.mMobileSite) { 6477 if (minPrefWidth > Math.max(0, viewWidth)) { 6478 mMinZoomScale = (float) viewWidth / minPrefWidth; 6479 mMinZoomScaleFixed = false; 6480 if (updateZoomOverview) { 6481 WebSettings settings = getSettings(); 6482 mInZoomOverview = settings.getUseWideViewPort() && 6483 settings.getLoadWithOverviewMode(); 6484 } 6485 } else { 6486 mMinZoomScale = restoreState.mDefaultScale; 6487 mMinZoomScaleFixed = true; 6488 } 6489 } else { 6490 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 6491 mMinZoomScaleFixed = false; 6492 } 6493 } else { 6494 mMinZoomScale = restoreState.mMinScale; 6495 mMinZoomScaleFixed = true; 6496 } 6497 if (restoreState.mMaxScale == 0) { 6498 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 6499 } else { 6500 mMaxZoomScale = restoreState.mMaxScale; 6501 } 6502 } 6503 6504 /* 6505 * Request a dropdown menu for a listbox with single selection or a single 6506 * <select> element. 6507 * 6508 * @param array Labels for the listbox. 6509 * @param enabledArray State for each element in the list. See static 6510 * integers in Container class. 6511 * @param selection Which position is initally selected. 6512 */ 6513 void requestListBox(String[] array, int[] enabledArray, int selection) { 6514 mPrivateHandler.post( 6515 new InvokeListBox(array, enabledArray, selection)); 6516 } 6517 6518 // called by JNI 6519 private void sendMoveFocus(int frame, int node) { 6520 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 6521 new WebViewCore.CursorData(frame, node, 0, 0)); 6522 } 6523 6524 // called by JNI 6525 private void sendMoveMouse(int frame, int node, int x, int y) { 6526 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 6527 new WebViewCore.CursorData(frame, node, x, y)); 6528 } 6529 6530 /* 6531 * Send a mouse move event to the webcore thread. 6532 * 6533 * @param removeFocus Pass true if the "mouse" cursor is now over a node 6534 * which wants key events, but it is not the focus. This 6535 * will make the visual appear as though nothing is in 6536 * focus. Remove the WebTextView, if present, and stop 6537 * drawing the blinking caret. 6538 * called by JNI 6539 */ 6540 private void sendMoveMouseIfLatest(boolean removeFocus) { 6541 if (removeFocus) { 6542 clearTextEntry(); 6543 setFocusControllerInactive(); 6544 } 6545 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 6546 cursorData()); 6547 } 6548 6549 // called by JNI 6550 private void sendMotionUp(int touchGeneration, 6551 int frame, int node, int x, int y) { 6552 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6553 touchUpData.mMoveGeneration = touchGeneration; 6554 touchUpData.mFrame = frame; 6555 touchUpData.mNode = node; 6556 touchUpData.mX = x; 6557 touchUpData.mY = y; 6558 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6559 } 6560 6561 6562 private int getScaledMaxXScroll() { 6563 int width; 6564 if (mHeightCanMeasure == false) { 6565 width = getViewWidth() / 4; 6566 } else { 6567 Rect visRect = new Rect(); 6568 calcOurVisibleRect(visRect); 6569 width = visRect.width() / 2; 6570 } 6571 // FIXME the divisor should be retrieved from somewhere 6572 return viewToContentX(width); 6573 } 6574 6575 private int getScaledMaxYScroll() { 6576 int height; 6577 if (mHeightCanMeasure == false) { 6578 height = getViewHeight() / 4; 6579 } else { 6580 Rect visRect = new Rect(); 6581 calcOurVisibleRect(visRect); 6582 height = visRect.height() / 2; 6583 } 6584 // FIXME the divisor should be retrieved from somewhere 6585 // the closest thing today is hard-coded into ScrollView.java 6586 // (from ScrollView.java, line 363) int maxJump = height/2; 6587 return Math.round(height * mInvActualScale); 6588 } 6589 6590 /** 6591 * Called by JNI to invalidate view 6592 */ 6593 private void viewInvalidate() { 6594 invalidate(); 6595 } 6596 6597 // return true if the key was handled 6598 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 6599 long time, boolean ignorePlugin) { 6600 if (mNativeClass == 0) { 6601 return false; 6602 } 6603 if (ignorePlugin == false && nativeFocusIsPlugin()) { 6604 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 6605 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 6606 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 6607 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 6608 , 0, 0, 0); 6609 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 6610 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 6611 return true; 6612 } 6613 mLastCursorTime = time; 6614 mLastCursorBounds = nativeGetCursorRingBounds(); 6615 boolean keyHandled 6616 = nativeMoveCursor(keyCode, count, noScroll) == false; 6617 if (DebugFlags.WEB_VIEW) { 6618 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 6619 + " mLastCursorTime=" + mLastCursorTime 6620 + " handled=" + keyHandled); 6621 } 6622 if (keyHandled == false || mHeightCanMeasure == false) { 6623 return keyHandled; 6624 } 6625 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 6626 if (contentCursorRingBounds.isEmpty()) return keyHandled; 6627 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 6628 Rect visRect = new Rect(); 6629 calcOurVisibleRect(visRect); 6630 Rect outset = new Rect(visRect); 6631 int maxXScroll = visRect.width() / 2; 6632 int maxYScroll = visRect.height() / 2; 6633 outset.inset(-maxXScroll, -maxYScroll); 6634 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 6635 return keyHandled; 6636 } 6637 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 6638 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 6639 maxXScroll); 6640 if (maxH > 0) { 6641 pinScrollBy(maxH, 0, true, 0); 6642 } else { 6643 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 6644 -maxXScroll); 6645 if (maxH < 0) { 6646 pinScrollBy(maxH, 0, true, 0); 6647 } 6648 } 6649 if (mLastCursorBounds.isEmpty()) return keyHandled; 6650 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 6651 return keyHandled; 6652 } 6653 if (DebugFlags.WEB_VIEW) { 6654 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 6655 + contentCursorRingBounds); 6656 } 6657 requestRectangleOnScreen(viewCursorRingBounds); 6658 mUserScroll = true; 6659 return keyHandled; 6660 } 6661 6662 /** 6663 * Set the background color. It's white by default. Pass 6664 * zero to make the view transparent. 6665 * @param color the ARGB color described by Color.java 6666 */ 6667 public void setBackgroundColor(int color) { 6668 mBackgroundColor = color; 6669 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 6670 } 6671 6672 public void debugDump() { 6673 nativeDebugDump(); 6674 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 6675 } 6676 6677 /** 6678 * Draw the HTML page into the specified canvas. This call ignores any 6679 * view-specific zoom, scroll offset, or other changes. It does not draw 6680 * any view-specific chrome, such as progress or URL bars. 6681 * 6682 * @hide only needs to be accessible to Browser and testing 6683 */ 6684 public void drawPage(Canvas canvas) { 6685 mWebViewCore.drawContentPicture(canvas, 0, false, false); 6686 } 6687 6688 /** 6689 * Set the time to wait between passing touches to WebCore. See also the 6690 * TOUCH_SENT_INTERVAL member for further discussion. 6691 * 6692 * @hide This is only used by the DRT test application. 6693 */ 6694 public void setTouchInterval(int interval) { 6695 mCurrentTouchInterval = interval; 6696 } 6697 6698 /** 6699 * Update our cache with updatedText. 6700 * @param updatedText The new text to put in our cache. 6701 */ 6702 /* package */ void updateCachedTextfield(String updatedText) { 6703 // Also place our generation number so that when we look at the cache 6704 // we recognize that it is up to date. 6705 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 6706 } 6707 6708 private native int nativeCacheHitFramePointer(); 6709 private native Rect nativeCacheHitNodeBounds(); 6710 private native int nativeCacheHitNodePointer(); 6711 /* package */ native void nativeClearCursor(); 6712 private native void nativeCreate(int ptr); 6713 private native int nativeCursorFramePointer(); 6714 private native Rect nativeCursorNodeBounds(); 6715 private native int nativeCursorNodePointer(); 6716 /* package */ native boolean nativeCursorMatchesFocus(); 6717 private native boolean nativeCursorIntersects(Rect visibleRect); 6718 private native boolean nativeCursorIsAnchor(); 6719 private native boolean nativeCursorIsTextInput(); 6720 private native Point nativeCursorPosition(); 6721 private native String nativeCursorText(); 6722 /** 6723 * Returns true if the native cursor node says it wants to handle key events 6724 * (ala plugins). This can only be called if mNativeClass is non-zero! 6725 */ 6726 private native boolean nativeCursorWantsKeyEvents(); 6727 private native void nativeDebugDump(); 6728 private native void nativeDestroy(); 6729 private native void nativeDrawCursorRing(Canvas content); 6730 private native void nativeDestroyLayer(int layer); 6731 private native int nativeEvaluateLayersAnimations(int layer); 6732 private native boolean nativeLayersHaveAnimations(int layer); 6733 private native void nativeUpdateLayers(int updates); 6734 private native void nativeDrawLayers(int layer, 6735 int scrollX, int scrollY, 6736 int width, int height, 6737 float scale, Canvas canvas); 6738 private native void nativeDrawMatches(Canvas canvas); 6739 private native void nativeDrawSelectionPointer(Canvas content, 6740 float scale, int x, int y, boolean extendSelection); 6741 private native void nativeDrawSelectionRegion(Canvas content); 6742 private native void nativeDumpDisplayTree(String urlOrNull); 6743 private native int nativeFindAll(String findLower, String findUpper); 6744 private native void nativeFindNext(boolean forward); 6745 /* package */ native int nativeFocusCandidateFramePointer(); 6746 private native boolean nativeFocusCandidateIsPassword(); 6747 private native boolean nativeFocusCandidateIsRtlText(); 6748 private native boolean nativeFocusCandidateIsTextInput(); 6749 /* package */ native int nativeFocusCandidateMaxLength(); 6750 /* package */ native String nativeFocusCandidateName(); 6751 private native Rect nativeFocusCandidateNodeBounds(); 6752 private native int nativeFocusCandidatePointer(); 6753 private native String nativeFocusCandidateText(); 6754 private native int nativeFocusCandidateTextSize(); 6755 /** 6756 * Returns an integer corresponding to WebView.cpp::type. 6757 * See WebTextView.setType() 6758 */ 6759 private native int nativeFocusCandidateType(); 6760 private native boolean nativeFocusIsPlugin(); 6761 /* package */ native int nativeFocusNodePointer(); 6762 private native Rect nativeGetCursorRingBounds(); 6763 private native String nativeGetSelection(); 6764 private native boolean nativeHasCursorNode(); 6765 private native boolean nativeHasFocusNode(); 6766 private native void nativeHideCursor(); 6767 private native String nativeImageURI(int x, int y); 6768 private native void nativeInstrumentReport(); 6769 /* package */ native void nativeMoveCursorToNextTextInput(); 6770 // return true if the page has been scrolled 6771 private native boolean nativeMotionUp(int x, int y, int slop); 6772 // returns false if it handled the key 6773 private native boolean nativeMoveCursor(int keyCode, int count, 6774 boolean noScroll); 6775 private native int nativeMoveGeneration(); 6776 private native void nativeMoveSelection(int x, int y, 6777 boolean extendSelection); 6778 private native boolean nativePointInNavCache(int x, int y, int slop); 6779 // Like many other of our native methods, you must make sure that 6780 // mNativeClass is not null before calling this method. 6781 private native void nativeRecordButtons(boolean focused, 6782 boolean pressed, boolean invalidate); 6783 private native void nativeSelectBestAt(Rect rect); 6784 private native void nativeSetFindIsUp(); 6785 private native void nativeSetFollowedLink(boolean followed); 6786 private native void nativeSetHeightCanMeasure(boolean measure); 6787 // Returns a value corresponding to CachedFrame::ImeAction 6788 /* package */ native int nativeTextFieldAction(); 6789 private native int nativeTextGeneration(); 6790 // Never call this version except by updateCachedTextfield(String) - 6791 // we always want to pass in our generation number. 6792 private native void nativeUpdateCachedTextfield(String updatedText, 6793 int generation); 6794 // return NO_LEFTEDGE means failure. 6795 private static final int NO_LEFTEDGE = -1; 6796 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 6797} 6798