WebView.java revision bd27544098a9fd50bf7964f108d656a905216caf
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.app.AlertDialog; 20import android.content.Context; 21import android.content.DialogInterface; 22import android.content.Intent; 23import android.content.DialogInterface.OnCancelListener; 24import android.content.pm.PackageManager; 25import android.database.DataSetObserver; 26import android.graphics.Bitmap; 27import android.graphics.Canvas; 28import android.graphics.Color; 29import android.graphics.Interpolator; 30import android.graphics.Picture; 31import android.graphics.Point; 32import android.graphics.Rect; 33import android.graphics.drawable.Drawable; 34import android.net.http.SslCertificate; 35import android.net.Uri; 36import android.os.Bundle; 37import android.os.Handler; 38import android.os.Message; 39import android.os.ServiceManager; 40import android.os.SystemClock; 41import android.text.IClipboard; 42import android.text.Selection; 43import android.text.Spannable; 44import android.util.AttributeSet; 45import android.util.EventLog; 46import android.util.Log; 47import android.util.TypedValue; 48import android.view.Gravity; 49import android.view.KeyEvent; 50import android.view.LayoutInflater; 51import android.view.MotionEvent; 52import android.view.ScaleGestureDetector; 53import android.view.SoundEffectConstants; 54import android.view.VelocityTracker; 55import android.view.View; 56import android.view.ViewConfiguration; 57import android.view.ViewGroup; 58import android.view.ViewTreeObserver; 59import android.view.animation.AlphaAnimation; 60import android.view.inputmethod.EditorInfo; 61import android.view.inputmethod.InputConnection; 62import android.view.inputmethod.InputMethodManager; 63import android.webkit.WebTextView.AutoCompleteAdapter; 64import android.webkit.WebViewCore.EventHub; 65import android.widget.AbsoluteLayout; 66import android.widget.Adapter; 67import android.widget.AdapterView; 68import android.widget.ArrayAdapter; 69import android.widget.CheckedTextView; 70import android.widget.FrameLayout; 71import android.widget.LinearLayout; 72import android.widget.ListView; 73import android.widget.Scroller; 74import android.widget.Toast; 75import android.widget.ZoomButtonsController; 76import android.widget.ZoomControls; 77import android.widget.AdapterView.OnItemClickListener; 78 79import java.io.File; 80import java.io.FileInputStream; 81import java.io.FileNotFoundException; 82import java.io.FileOutputStream; 83import java.io.IOException; 84import java.net.URLDecoder; 85import java.util.ArrayList; 86import java.util.List; 87import java.util.HashMap; 88import java.util.Map; 89import java.util.Set; 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 217 218 static final String LOGTAG = "webview"; 219 220 private static class ExtendedZoomControls extends FrameLayout { 221 public ExtendedZoomControls(Context context, AttributeSet attrs) { 222 super(context, attrs); 223 LayoutInflater inflater = (LayoutInflater) 224 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 225 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 226 mPlusMinusZoomControls = (ZoomControls) findViewById( 227 com.android.internal.R.id.zoomControls); 228 findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( 229 View.GONE); 230 } 231 232 public void show(boolean showZoom, boolean canZoomOut) { 233 mPlusMinusZoomControls.setVisibility( 234 showZoom ? View.VISIBLE : View.GONE); 235 fade(View.VISIBLE, 0.0f, 1.0f); 236 } 237 238 public void hide() { 239 fade(View.GONE, 1.0f, 0.0f); 240 } 241 242 private void fade(int visibility, float startAlpha, float endAlpha) { 243 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 244 anim.setDuration(500); 245 startAnimation(anim); 246 setVisibility(visibility); 247 } 248 249 public boolean hasFocus() { 250 return mPlusMinusZoomControls.hasFocus(); 251 } 252 253 public void setOnZoomInClickListener(OnClickListener listener) { 254 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 255 } 256 257 public void setOnZoomOutClickListener(OnClickListener listener) { 258 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 259 } 260 261 ZoomControls mPlusMinusZoomControls; 262 } 263 264 /** 265 * Transportation object for returning WebView across thread boundaries. 266 */ 267 public class WebViewTransport { 268 private WebView mWebview; 269 270 /** 271 * Set the WebView to the transportation object. 272 * @param webview The WebView to transport. 273 */ 274 public synchronized void setWebView(WebView webview) { 275 mWebview = webview; 276 } 277 278 /** 279 * Return the WebView object. 280 * @return WebView The transported WebView object. 281 */ 282 public synchronized WebView getWebView() { 283 return mWebview; 284 } 285 } 286 287 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 288 private final CallbackProxy mCallbackProxy; 289 290 private final WebViewDatabase mDatabase; 291 292 // SSL certificate for the main top-level page (if secure) 293 private SslCertificate mCertificate; 294 295 // Native WebView pointer that is 0 until the native object has been 296 // created. 297 private int mNativeClass; 298 // This would be final but it needs to be set to null when the WebView is 299 // destroyed. 300 private WebViewCore mWebViewCore; 301 // Handler for dispatching UI messages. 302 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 303 private WebTextView mWebTextView; 304 // Used to ignore changes to webkit text that arrives to the UI side after 305 // more key events. 306 private int mTextGeneration; 307 308 // Used by WebViewCore to create child views. 309 /* package */ final ViewManager mViewManager; 310 311 // Used to display in full screen mode 312 PluginFullScreenHolder mFullScreenHolder; 313 314 /** 315 * Position of the last touch event. 316 */ 317 private float mLastTouchX; 318 private float mLastTouchY; 319 320 /** 321 * Time of the last touch event. 322 */ 323 private long mLastTouchTime; 324 325 /** 326 * Time of the last time sending touch event to WebViewCore 327 */ 328 private long mLastSentTouchTime; 329 330 /** 331 * The minimum elapsed time before sending another ACTION_MOVE event to 332 * WebViewCore. This really should be tuned for each type of the devices. 333 * For example in Google Map api test case, it takes Dream device at least 334 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 335 * triggering the layout and drawing the picture. While the same process 336 * takes 60+ms on the current high speed device. If we make 337 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 338 * to WebViewCore queue and the real layout and draw events will be pushed 339 * to further, which slows down the refresh rate. Choose 50 to favor the 340 * current high speed devices. For Dream like devices, 100 is a better 341 * choice. Maybe make this in the buildspec later. 342 */ 343 private static final int TOUCH_SENT_INTERVAL = 50; 344 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 345 346 /** 347 * Helper class to get velocity for fling 348 */ 349 VelocityTracker mVelocityTracker; 350 private int mMaximumFling; 351 private float mLastVelocity; 352 private float mLastVelX; 353 private float mLastVelY; 354 355 /** 356 * Touch mode 357 */ 358 private int mTouchMode = TOUCH_DONE_MODE; 359 private static final int TOUCH_INIT_MODE = 1; 360 private static final int TOUCH_DRAG_START_MODE = 2; 361 private static final int TOUCH_DRAG_MODE = 3; 362 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 363 private static final int TOUCH_SHORTPRESS_MODE = 5; 364 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 365 private static final int TOUCH_DONE_MODE = 7; 366 private static final int TOUCH_SELECT_MODE = 8; 367 private static final int TOUCH_PINCH_DRAG = 9; 368 369 // Whether to forward the touch events to WebCore 370 private boolean mForwardTouchEvents = false; 371 372 // Whether to prevent drag during touch. The initial value depends on 373 // mForwardTouchEvents. If WebCore wants touch events, we assume it will 374 // take control of touch events unless it says no for touch down event. 375 private static final int PREVENT_DRAG_NO = 0; 376 private static final int PREVENT_DRAG_MAYBE_YES = 1; 377 private static final int PREVENT_DRAG_YES = 2; 378 private int mPreventDrag = PREVENT_DRAG_NO; 379 380 // by default mPreventLongPress is false. If it is true, long press event 381 // will be handled by WebKit instead of UI. 382 private boolean mPreventLongPress = false; 383 // by default mPreventDoubleTap is false. If it is true, double tap event 384 // will be handled by WebKit instead of UI. 385 private boolean mPreventDoubleTap = false; 386 387 // this needs to be in sync with the logic in WebKit's 388 // EventHandler::handleTouchEvent() 389 private static final int TOUCH_PREVENT_DRAG = 0x1; 390 private static final int TOUCH_PREVENT_LONGPRESS = 0x2; 391 private static final int TOUCH_PREVENT_DOUBLETAP = 0x4; 392 393 // To keep track of whether the current drag was initiated by a WebTextView, 394 // so that we know not to hide the cursor 395 boolean mDragFromTextInput; 396 397 // Whether or not to draw the cursor ring. 398 private boolean mDrawCursorRing = true; 399 400 // true if onPause has been called (and not onResume) 401 private boolean mIsPaused; 402 403 /** 404 * Customizable constant 405 */ 406 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 407 private int mTouchSlopSquare; 408 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 409 private int mDoubleTapSlopSquare; 410 // pre-computed density adjusted navigation slop 411 private int mNavSlop; 412 // This should be ViewConfiguration.getTapTimeout() 413 // But system time out is 100ms, which is too short for the browser. 414 // In the browser, if it switches out of tap too soon, jump tap won't work. 415 private static final int TAP_TIMEOUT = 200; 416 // This should be ViewConfiguration.getLongPressTimeout() 417 // But system time out is 500ms, which is too short for the browser. 418 // With a short timeout, it's difficult to treat trigger a short press. 419 private static final int LONG_PRESS_TIMEOUT = 1000; 420 // needed to avoid flinging after a pause of no movement 421 private static final int MIN_FLING_TIME = 250; 422 // draw unfiltered after drag is held without movement 423 private static final int MOTIONLESS_TIME = 100; 424 // The time that the Zoom Controls are visible before fading away 425 private static final long ZOOM_CONTROLS_TIMEOUT = 426 ViewConfiguration.getZoomControlsTimeout(); 427 // The amount of content to overlap between two screens when going through 428 // pages with the space bar, in pixels. 429 private static final int PAGE_SCROLL_OVERLAP = 24; 430 431 /** 432 * These prevent calling requestLayout if either dimension is fixed. This 433 * depends on the layout parameters and the measure specs. 434 */ 435 boolean mWidthCanMeasure; 436 boolean mHeightCanMeasure; 437 438 // Remember the last dimensions we sent to the native side so we can avoid 439 // sending the same dimensions more than once. 440 int mLastWidthSent; 441 int mLastHeightSent; 442 443 private int mContentWidth; // cache of value from WebViewCore 444 private int mContentHeight; // cache of value from WebViewCore 445 446 // Need to have the separate control for horizontal and vertical scrollbar 447 // style than the View's single scrollbar style 448 private boolean mOverlayHorizontalScrollbar = true; 449 private boolean mOverlayVerticalScrollbar = false; 450 451 // our standard speed. this way small distances will be traversed in less 452 // time than large distances, but we cap the duration, so that very large 453 // distances won't take too long to get there. 454 private static final int STD_SPEED = 480; // pixels per second 455 // time for the longest scroll animation 456 private static final int MAX_DURATION = 750; // milliseconds 457 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 458 private Scroller mScroller; 459 460 private boolean mWrapContent; 461 private static final int MOTIONLESS_FALSE = 0; 462 private static final int MOTIONLESS_PENDING = 1; 463 private static final int MOTIONLESS_TRUE = 2; 464 private int mHeldMotionless; 465 466 // whether support multi-touch 467 private boolean mSupportMultiTouch; 468 // use the framework's ScaleGestureDetector to handle multi-touch 469 private ScaleGestureDetector mScaleDetector; 470 // minimum scale change during multi-touch zoom 471 private static float PREVIEW_SCALE_INCREMENT = 0.01f; 472 473 // the anchor point in the document space where VIEW_SIZE_CHANGED should 474 // apply to 475 private int mAnchorX; 476 private int mAnchorY; 477 478 /** 479 * Private message ids 480 */ 481 private static final int REMEMBER_PASSWORD = 1; 482 private static final int NEVER_REMEMBER_PASSWORD = 2; 483 private static final int SWITCH_TO_SHORTPRESS = 3; 484 private static final int SWITCH_TO_LONGPRESS = 4; 485 private static final int RELEASE_SINGLE_TAP = 5; 486 private static final int REQUEST_FORM_DATA = 6; 487 private static final int RESUME_WEBCORE_PRIORITY = 7; 488 private static final int DRAG_HELD_MOTIONLESS = 8; 489 private static final int AWAKEN_SCROLL_BARS = 9; 490 491 //! arg1=x, arg2=y 492 static final int SCROLL_TO_MSG_ID = 10; 493 static final int SCROLL_BY_MSG_ID = 11; 494 //! arg1=x, arg2=y 495 static final int SPAWN_SCROLL_TO_MSG_ID = 12; 496 //! arg1=x, arg2=y 497 static final int SYNC_SCROLL_TO_MSG_ID = 13; 498 static final int NEW_PICTURE_MSG_ID = 14; 499 static final int UPDATE_TEXT_ENTRY_MSG_ID = 15; 500 static final int WEBCORE_INITIALIZED_MSG_ID = 16; 501 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 17; 502 static final int UPDATE_ZOOM_RANGE = 18; 503 static final int MOVE_OUT_OF_PLUGIN = 19; 504 static final int CLEAR_TEXT_ENTRY = 20; 505 static final int UPDATE_TEXT_SELECTION_MSG_ID = 21; 506 static final int SHOW_RECT_MSG_ID = 22; 507 static final int LONG_PRESS_CENTER = 23; 508 static final int PREVENT_TOUCH_ID = 24; 509 static final int WEBCORE_NEED_TOUCH_EVENTS = 25; 510 // obj=Rect in doc coordinates 511 static final int INVAL_RECT_MSG_ID = 26; 512 static final int REQUEST_KEYBOARD = 27; 513 static final int DO_MOTION_UP = 28; 514 static final int SHOW_FULLSCREEN = 29; 515 static final int HIDE_FULLSCREEN = 30; 516 static final int DOM_FOCUS_CHANGED = 31; 517 static final int IMMEDIATE_REPAINT_MSG_ID = 32; 518 static final int SET_ROOT_LAYER_MSG_ID = 33; 519 static final int RETURN_LABEL = 34; 520 static final int FIND_AGAIN = 35; 521 522 static final String[] HandlerDebugString = { 523 "REMEMBER_PASSWORD", // = 1; 524 "NEVER_REMEMBER_PASSWORD", // = 2; 525 "SWITCH_TO_SHORTPRESS", // = 3; 526 "SWITCH_TO_LONGPRESS", // = 4; 527 "RELEASE_SINGLE_TAP", // = 5; 528 "REQUEST_FORM_DATA", // = 6; 529 "RESUME_WEBCORE_PRIORITY", // = 7; 530 "DRAG_HELD_MOTIONLESS", // = 8; 531 "AWAKEN_SCROLL_BARS", // = 9; 532 "SCROLL_TO_MSG_ID", // = 10; 533 "SCROLL_BY_MSG_ID", // = 11; 534 "SPAWN_SCROLL_TO_MSG_ID", // = 12; 535 "SYNC_SCROLL_TO_MSG_ID", // = 13; 536 "NEW_PICTURE_MSG_ID", // = 14; 537 "UPDATE_TEXT_ENTRY_MSG_ID", // = 15; 538 "WEBCORE_INITIALIZED_MSG_ID", // = 16; 539 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 17; 540 "UPDATE_ZOOM_RANGE", // = 18; 541 "MOVE_OUT_OF_PLUGIN", // = 19; 542 "CLEAR_TEXT_ENTRY", // = 20; 543 "UPDATE_TEXT_SELECTION_MSG_ID", // = 21; 544 "SHOW_RECT_MSG_ID", // = 22; 545 "LONG_PRESS_CENTER", // = 23; 546 "PREVENT_TOUCH_ID", // = 24; 547 "WEBCORE_NEED_TOUCH_EVENTS", // = 25; 548 "INVAL_RECT_MSG_ID", // = 26; 549 "REQUEST_KEYBOARD", // = 27; 550 "DO_MOTION_UP", // = 28; 551 "SHOW_FULLSCREEN", // = 29; 552 "HIDE_FULLSCREEN", // = 30; 553 "DOM_FOCUS_CHANGED", // = 31; 554 "IMMEDIATE_REPAINT_MSG_ID", // = 32; 555 "SET_ROOT_LAYER_MSG_ID", // = 33; 556 "RETURN_LABEL", // = 34; 557 "FIND_AGAIN" // = 35; 558 }; 559 560 // If the site doesn't use the viewport meta tag to specify the viewport, 561 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 562 static final int DEFAULT_VIEWPORT_WIDTH = 800; 563 564 // normally we try to fit the content to the minimum preferred width 565 // calculated by the Webkit. To avoid the bad behavior when some site's 566 // minimum preferred width keeps growing when changing the viewport width or 567 // the minimum preferred width is huge, an upper limit is needed. 568 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 569 570 // default scale limit. Depending on the display density 571 private static float DEFAULT_MAX_ZOOM_SCALE; 572 private static float DEFAULT_MIN_ZOOM_SCALE; 573 // scale limit, which can be set through viewport meta tag in the web page 574 private float mMaxZoomScale; 575 private float mMinZoomScale; 576 private boolean mMinZoomScaleFixed = true; 577 578 // initial scale in percent. 0 means using default. 579 private int mInitialScaleInPercent = 0; 580 581 // while in the zoom overview mode, the page's width is fully fit to the 582 // current window. The page is alive, in another words, you can click to 583 // follow the links. Double tap will toggle between zoom overview mode and 584 // the last zoom scale. 585 boolean mInZoomOverview = false; 586 587 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 588 // engadget always have wider mContentWidth no matter what viewport size is. 589 int mZoomOverviewWidth = DEFAULT_VIEWPORT_WIDTH; 590 float mTextWrapScale; 591 592 // default scale. Depending on the display density. 593 static int DEFAULT_SCALE_PERCENT; 594 private float mDefaultScale; 595 596 // set to true temporarily during ScaleGesture triggered zoom 597 private boolean mPreviewZoomOnly = false; 598 599 // computed scale and inverse, from mZoomWidth. 600 private float mActualScale; 601 private float mInvActualScale; 602 // if this is non-zero, it is used on drawing rather than mActualScale 603 private float mZoomScale; 604 private float mInvInitialZoomScale; 605 private float mInvFinalZoomScale; 606 private int mInitialScrollX; 607 private int mInitialScrollY; 608 private long mZoomStart; 609 private static final int ZOOM_ANIMATION_LENGTH = 500; 610 611 private boolean mUserScroll = false; 612 613 private int mSnapScrollMode = SNAP_NONE; 614 private static final int SNAP_NONE = 0; 615 private static final int SNAP_LOCK = 1; // not a separate state 616 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 617 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 618 private boolean mSnapPositive; 619 620 // Used to match key downs and key ups 621 private boolean mGotKeyDown; 622 623 /* package */ static boolean mLogEvent = true; 624 625 // for event log 626 private long mLastTouchUpTime = 0; 627 628 /** 629 * URI scheme for telephone number 630 */ 631 public static final String SCHEME_TEL = "tel:"; 632 /** 633 * URI scheme for email address 634 */ 635 public static final String SCHEME_MAILTO = "mailto:"; 636 /** 637 * URI scheme for map address 638 */ 639 public static final String SCHEME_GEO = "geo:0,0?q="; 640 641 private int mBackgroundColor = Color.WHITE; 642 643 // Used to notify listeners of a new picture. 644 private PictureListener mPictureListener; 645 /** 646 * Interface to listen for new pictures as they change. 647 */ 648 public interface PictureListener { 649 /** 650 * Notify the listener that the picture has changed. 651 * @param view The WebView that owns the picture. 652 * @param picture The new picture. 653 */ 654 public void onNewPicture(WebView view, Picture picture); 655 } 656 657 // FIXME: Want to make this public, but need to change the API file. 658 public /*static*/ class HitTestResult { 659 /** 660 * Default HitTestResult, where the target is unknown 661 */ 662 public static final int UNKNOWN_TYPE = 0; 663 /** 664 * HitTestResult for hitting a HTML::a tag 665 */ 666 public static final int ANCHOR_TYPE = 1; 667 /** 668 * HitTestResult for hitting a phone number 669 */ 670 public static final int PHONE_TYPE = 2; 671 /** 672 * HitTestResult for hitting a map address 673 */ 674 public static final int GEO_TYPE = 3; 675 /** 676 * HitTestResult for hitting an email address 677 */ 678 public static final int EMAIL_TYPE = 4; 679 /** 680 * HitTestResult for hitting an HTML::img tag 681 */ 682 public static final int IMAGE_TYPE = 5; 683 /** 684 * HitTestResult for hitting a HTML::a tag which contains HTML::img 685 */ 686 public static final int IMAGE_ANCHOR_TYPE = 6; 687 /** 688 * HitTestResult for hitting a HTML::a tag with src=http 689 */ 690 public static final int SRC_ANCHOR_TYPE = 7; 691 /** 692 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 693 */ 694 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 695 /** 696 * HitTestResult for hitting an edit text area 697 */ 698 public static final int EDIT_TEXT_TYPE = 9; 699 700 private int mType; 701 private String mExtra; 702 703 HitTestResult() { 704 mType = UNKNOWN_TYPE; 705 } 706 707 private void setType(int type) { 708 mType = type; 709 } 710 711 private void setExtra(String extra) { 712 mExtra = extra; 713 } 714 715 public int getType() { 716 return mType; 717 } 718 719 public String getExtra() { 720 return mExtra; 721 } 722 } 723 724 // The View containing the zoom controls 725 private ExtendedZoomControls mZoomControls; 726 private Runnable mZoomControlRunnable; 727 728 private ZoomButtonsController mZoomButtonsController; 729 730 // These keep track of the center point of the zoom. They are used to 731 // determine the point around which we should zoom. 732 private float mZoomCenterX; 733 private float mZoomCenterY; 734 735 private ZoomButtonsController.OnZoomListener mZoomListener = 736 new ZoomButtonsController.OnZoomListener() { 737 738 public void onVisibilityChanged(boolean visible) { 739 if (visible) { 740 switchOutDrawHistory(); 741 // Bring back the hidden zoom controls. 742 mZoomButtonsController.getZoomControls().setVisibility( 743 View.VISIBLE); 744 updateZoomButtonsEnabled(); 745 } 746 } 747 748 public void onZoom(boolean zoomIn) { 749 if (zoomIn) { 750 zoomIn(); 751 } else { 752 zoomOut(); 753 } 754 755 updateZoomButtonsEnabled(); 756 } 757 }; 758 759 /** 760 * Construct a new WebView with a Context object. 761 * @param context A Context object used to access application assets. 762 */ 763 public WebView(Context context) { 764 this(context, null); 765 } 766 767 /** 768 * Construct a new WebView with layout parameters. 769 * @param context A Context object used to access application assets. 770 * @param attrs An AttributeSet passed to our parent. 771 */ 772 public WebView(Context context, AttributeSet attrs) { 773 this(context, attrs, com.android.internal.R.attr.webViewStyle); 774 } 775 776 /** 777 * Construct a new WebView with layout parameters and a default style. 778 * @param context A Context object used to access application assets. 779 * @param attrs An AttributeSet passed to our parent. 780 * @param defStyle The default style resource ID. 781 */ 782 public WebView(Context context, AttributeSet attrs, int defStyle) { 783 this(context, attrs, defStyle, null); 784 } 785 786 /** 787 * Construct a new WebView with layout parameters, a default style and a set 788 * of custom Javscript interfaces to be added to the WebView at initialization 789 * time. This guarantees that these interfaces will be available when the JS 790 * context is initialized. 791 * @param context A Context object used to access application assets. 792 * @param attrs An AttributeSet passed to our parent. 793 * @param defStyle The default style resource ID. 794 * @param javascriptInterfaces is a Map of intareface names, as keys, and 795 * object implementing those interfaces, as values. 796 * @hide pending API council approval. 797 */ 798 protected WebView(Context context, AttributeSet attrs, int defStyle, 799 Map<String, Object> javascriptInterfaces) { 800 super(context, attrs, defStyle); 801 init(); 802 803 mCallbackProxy = new CallbackProxy(context, this); 804 mViewManager = new ViewManager(this); 805 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 806 mDatabase = WebViewDatabase.getInstance(context); 807 mScroller = new Scroller(context); 808 809 mZoomButtonsController = new ZoomButtonsController(this); 810 mZoomButtonsController.setOnZoomListener(mZoomListener); 811 // ZoomButtonsController positions the buttons at the bottom, but in 812 // the middle. Change their layout parameters so they appear on the 813 // right. 814 View controls = mZoomButtonsController.getZoomControls(); 815 ViewGroup.LayoutParams params = controls.getLayoutParams(); 816 if (params instanceof FrameLayout.LayoutParams) { 817 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 818 params; 819 frameParams.gravity = Gravity.RIGHT; 820 } 821 updateMultiTouchSupport(context); 822 } 823 824 void updateMultiTouchSupport(Context context) { 825 WebSettings settings = getSettings(); 826 mSupportMultiTouch = context.getPackageManager().hasSystemFeature( 827 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 828 && settings.supportZoom() && settings.getBuiltInZoomControls(); 829 if (mSupportMultiTouch && (mScaleDetector == null)) { 830 mScaleDetector = new ScaleGestureDetector(context, 831 new ScaleDetectorListener()); 832 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 833 mScaleDetector = null; 834 } 835 } 836 837 private void updateZoomButtonsEnabled() { 838 boolean canZoomIn = mActualScale < mMaxZoomScale; 839 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 840 if (!canZoomIn && !canZoomOut) { 841 // Hide the zoom in and out buttons, as well as the fit to page 842 // button, if the page cannot zoom 843 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 844 } else { 845 // Set each one individually, as a page may be able to zoom in 846 // or out. 847 mZoomButtonsController.setZoomInEnabled(canZoomIn); 848 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 849 } 850 } 851 852 private void init() { 853 setWillNotDraw(false); 854 setFocusable(true); 855 setFocusableInTouchMode(true); 856 setClickable(true); 857 setLongClickable(true); 858 859 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 860 int slop = configuration.getScaledTouchSlop(); 861 mTouchSlopSquare = slop * slop; 862 mMinLockSnapReverseDistance = slop; 863 slop = configuration.getScaledDoubleTapSlop(); 864 mDoubleTapSlopSquare = slop * slop; 865 final float density = getContext().getResources().getDisplayMetrics().density; 866 // use one line height, 16 based on our current default font, for how 867 // far we allow a touch be away from the edge of a link 868 mNavSlop = (int) (16 * density); 869 // density adjusted scale factors 870 DEFAULT_SCALE_PERCENT = (int) (100 * density); 871 mDefaultScale = density; 872 mActualScale = density; 873 mInvActualScale = 1 / density; 874 mTextWrapScale = density; 875 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 876 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 877 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 878 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 879 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 880 } 881 882 /* package */void updateDefaultZoomDensity(int zoomDensity) { 883 final float density = getContext().getResources().getDisplayMetrics().density 884 * 100 / zoomDensity; 885 if (Math.abs(density - mDefaultScale) > 0.01) { 886 float scaleFactor = density / mDefaultScale; 887 // adjust the limits 888 mNavSlop = (int) (16 * density); 889 DEFAULT_SCALE_PERCENT = (int) (100 * density); 890 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 891 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 892 mDefaultScale = density; 893 mMaxZoomScale *= scaleFactor; 894 mMinZoomScale *= scaleFactor; 895 setNewZoomScale(mActualScale * scaleFactor, true, false); 896 } 897 } 898 899 /* package */ boolean onSavePassword(String schemePlusHost, String username, 900 String password, final Message resumeMsg) { 901 boolean rVal = false; 902 if (resumeMsg == null) { 903 // null resumeMsg implies saving password silently 904 mDatabase.setUsernamePassword(schemePlusHost, username, password); 905 } else { 906 final Message remember = mPrivateHandler.obtainMessage( 907 REMEMBER_PASSWORD); 908 remember.getData().putString("host", schemePlusHost); 909 remember.getData().putString("username", username); 910 remember.getData().putString("password", password); 911 remember.obj = resumeMsg; 912 913 final Message neverRemember = mPrivateHandler.obtainMessage( 914 NEVER_REMEMBER_PASSWORD); 915 neverRemember.getData().putString("host", schemePlusHost); 916 neverRemember.getData().putString("username", username); 917 neverRemember.getData().putString("password", password); 918 neverRemember.obj = resumeMsg; 919 920 new AlertDialog.Builder(getContext()) 921 .setTitle(com.android.internal.R.string.save_password_label) 922 .setMessage(com.android.internal.R.string.save_password_message) 923 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 924 new DialogInterface.OnClickListener() { 925 public void onClick(DialogInterface dialog, int which) { 926 resumeMsg.sendToTarget(); 927 } 928 }) 929 .setNeutralButton(com.android.internal.R.string.save_password_remember, 930 new DialogInterface.OnClickListener() { 931 public void onClick(DialogInterface dialog, int which) { 932 remember.sendToTarget(); 933 } 934 }) 935 .setNegativeButton(com.android.internal.R.string.save_password_never, 936 new DialogInterface.OnClickListener() { 937 public void onClick(DialogInterface dialog, int which) { 938 neverRemember.sendToTarget(); 939 } 940 }) 941 .setOnCancelListener(new OnCancelListener() { 942 public void onCancel(DialogInterface dialog) { 943 resumeMsg.sendToTarget(); 944 } 945 }).show(); 946 // Return true so that WebViewCore will pause while the dialog is 947 // up. 948 rVal = true; 949 } 950 return rVal; 951 } 952 953 @Override 954 public void setScrollBarStyle(int style) { 955 if (style == View.SCROLLBARS_INSIDE_INSET 956 || style == View.SCROLLBARS_OUTSIDE_INSET) { 957 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 958 } else { 959 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 960 } 961 super.setScrollBarStyle(style); 962 } 963 964 /** 965 * Specify whether the horizontal scrollbar has overlay style. 966 * @param overlay TRUE if horizontal scrollbar should have overlay style. 967 */ 968 public void setHorizontalScrollbarOverlay(boolean overlay) { 969 mOverlayHorizontalScrollbar = overlay; 970 } 971 972 /** 973 * Specify whether the vertical scrollbar has overlay style. 974 * @param overlay TRUE if vertical scrollbar should have overlay style. 975 */ 976 public void setVerticalScrollbarOverlay(boolean overlay) { 977 mOverlayVerticalScrollbar = overlay; 978 } 979 980 /** 981 * Return whether horizontal scrollbar has overlay style 982 * @return TRUE if horizontal scrollbar has overlay style. 983 */ 984 public boolean overlayHorizontalScrollbar() { 985 return mOverlayHorizontalScrollbar; 986 } 987 988 /** 989 * Return whether vertical scrollbar has overlay style 990 * @return TRUE if vertical scrollbar has overlay style. 991 */ 992 public boolean overlayVerticalScrollbar() { 993 return mOverlayVerticalScrollbar; 994 } 995 996 /* 997 * Return the width of the view where the content of WebView should render 998 * to. 999 * Note: this can be called from WebCoreThread. 1000 */ 1001 /* package */ int getViewWidth() { 1002 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1003 return getWidth(); 1004 } else { 1005 return getWidth() - getVerticalScrollbarWidth(); 1006 } 1007 } 1008 1009 /* 1010 * returns the height of the titlebarview (if any). Does not care about 1011 * scrolling 1012 */ 1013 private int getTitleHeight() { 1014 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1015 } 1016 1017 /* 1018 * Return the amount of the titlebarview (if any) that is visible 1019 */ 1020 private int getVisibleTitleHeight() { 1021 return Math.max(getTitleHeight() - mScrollY, 0); 1022 } 1023 1024 /* 1025 * Return the height of the view where the content of WebView should render 1026 * to. Note that this excludes mTitleBar, if there is one. 1027 * Note: this can be called from WebCoreThread. 1028 */ 1029 /* package */ int getViewHeight() { 1030 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1031 } 1032 1033 private int getViewHeightWithTitle() { 1034 int height = getHeight(); 1035 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1036 height -= getHorizontalScrollbarHeight(); 1037 } 1038 return height; 1039 } 1040 1041 /** 1042 * @return The SSL certificate for the main top-level page or null if 1043 * there is no certificate (the site is not secure). 1044 */ 1045 public SslCertificate getCertificate() { 1046 return mCertificate; 1047 } 1048 1049 /** 1050 * Sets the SSL certificate for the main top-level page. 1051 */ 1052 public void setCertificate(SslCertificate certificate) { 1053 // here, the certificate can be null (if the site is not secure) 1054 mCertificate = certificate; 1055 } 1056 1057 //------------------------------------------------------------------------- 1058 // Methods called by activity 1059 //------------------------------------------------------------------------- 1060 1061 /** 1062 * Save the username and password for a particular host in the WebView's 1063 * internal database. 1064 * @param host The host that required the credentials. 1065 * @param username The username for the given host. 1066 * @param password The password for the given host. 1067 */ 1068 public void savePassword(String host, String username, String password) { 1069 mDatabase.setUsernamePassword(host, username, password); 1070 } 1071 1072 /** 1073 * Set the HTTP authentication credentials for a given host and realm. 1074 * 1075 * @param host The host for the credentials. 1076 * @param realm The realm for the credentials. 1077 * @param username The username for the password. If it is null, it means 1078 * password can't be saved. 1079 * @param password The password 1080 */ 1081 public void setHttpAuthUsernamePassword(String host, String realm, 1082 String username, String password) { 1083 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1084 } 1085 1086 /** 1087 * Retrieve the HTTP authentication username and password for a given 1088 * host & realm pair 1089 * 1090 * @param host The host for which the credentials apply. 1091 * @param realm The realm for which the credentials apply. 1092 * @return String[] if found, String[0] is username, which can be null and 1093 * String[1] is password. Return null if it can't find anything. 1094 */ 1095 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1096 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1097 } 1098 1099 /** 1100 * Destroy the internal state of the WebView. This method should be called 1101 * after the WebView has been removed from the view system. No other 1102 * methods may be called on a WebView after destroy. 1103 */ 1104 public void destroy() { 1105 clearTextEntry(); 1106 if (mWebViewCore != null) { 1107 // Set the handlers to null before destroying WebViewCore so no 1108 // more messages will be posted. 1109 mCallbackProxy.setWebViewClient(null); 1110 mCallbackProxy.setWebChromeClient(null); 1111 // Tell WebViewCore to destroy itself 1112 WebViewCore webViewCore = mWebViewCore; 1113 mWebViewCore = null; // prevent using partial webViewCore 1114 webViewCore.destroy(); 1115 // Remove any pending messages that might not be serviced yet. 1116 mPrivateHandler.removeCallbacksAndMessages(null); 1117 mCallbackProxy.removeCallbacksAndMessages(null); 1118 // Wake up the WebCore thread just in case it is waiting for a 1119 // javascript dialog. 1120 synchronized (mCallbackProxy) { 1121 mCallbackProxy.notify(); 1122 } 1123 } 1124 if (mNativeClass != 0) { 1125 nativeDestroy(); 1126 mNativeClass = 0; 1127 } 1128 } 1129 1130 /** 1131 * Enables platform notifications of data state and proxy changes. 1132 */ 1133 public static void enablePlatformNotifications() { 1134 Network.enablePlatformNotifications(); 1135 } 1136 1137 /** 1138 * If platform notifications are enabled, this should be called 1139 * from the Activity's onPause() or onStop(). 1140 */ 1141 public static void disablePlatformNotifications() { 1142 Network.disablePlatformNotifications(); 1143 } 1144 1145 /** 1146 * Sets JavaScript engine flags. 1147 * 1148 * @param flags JS engine flags in a String 1149 * 1150 * @hide pending API solidification 1151 */ 1152 public void setJsFlags(String flags) { 1153 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1154 } 1155 1156 /** 1157 * Inform WebView of the network state. This is used to set 1158 * the javascript property window.navigator.isOnline and 1159 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1160 * @param networkUp boolean indicating if network is available 1161 */ 1162 public void setNetworkAvailable(boolean networkUp) { 1163 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1164 networkUp ? 1 : 0, 0); 1165 } 1166 1167 /** 1168 * Inform WebView about the current network type. 1169 * {@hide} 1170 */ 1171 public void setNetworkType(String type, String subtype) { 1172 Map<String, String> map = new HashMap<String, String>(); 1173 map.put("type", type); 1174 map.put("subtype", subtype); 1175 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1176 } 1177 /** 1178 * Save the state of this WebView used in 1179 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1180 * method no longer stores the display data for this WebView. The previous 1181 * behavior could potentially leak files if {@link #restoreState} was never 1182 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1183 * and restoring the display data. 1184 * @param outState The Bundle to store the WebView state. 1185 * @return The same copy of the back/forward list used to save the state. If 1186 * saveState fails, the returned list will be null. 1187 * @see #savePicture 1188 * @see #restorePicture 1189 */ 1190 public WebBackForwardList saveState(Bundle outState) { 1191 if (outState == null) { 1192 return null; 1193 } 1194 // We grab a copy of the back/forward list because a client of WebView 1195 // may have invalidated the history list by calling clearHistory. 1196 WebBackForwardList list = copyBackForwardList(); 1197 final int currentIndex = list.getCurrentIndex(); 1198 final int size = list.getSize(); 1199 // We should fail saving the state if the list is empty or the index is 1200 // not in a valid range. 1201 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1202 return null; 1203 } 1204 outState.putInt("index", currentIndex); 1205 // FIXME: This should just be a byte[][] instead of ArrayList but 1206 // Parcel.java does not have the code to handle multi-dimensional 1207 // arrays. 1208 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1209 for (int i = 0; i < size; i++) { 1210 WebHistoryItem item = list.getItemAtIndex(i); 1211 if (null == item) { 1212 // FIXME: this shouldn't happen 1213 // need to determine how item got set to null 1214 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1215 return null; 1216 } 1217 byte[] data = item.getFlattenedData(); 1218 if (data == null) { 1219 // It would be very odd to not have any data for a given history 1220 // item. And we will fail to rebuild the history list without 1221 // flattened data. 1222 return null; 1223 } 1224 history.add(data); 1225 } 1226 outState.putSerializable("history", history); 1227 if (mCertificate != null) { 1228 outState.putBundle("certificate", 1229 SslCertificate.saveState(mCertificate)); 1230 } 1231 return list; 1232 } 1233 1234 /** 1235 * Save the current display data to the Bundle given. Used in conjunction 1236 * with {@link #saveState}. 1237 * @param b A Bundle to store the display data. 1238 * @param dest The file to store the serialized picture data. Will be 1239 * overwritten with this WebView's picture data. 1240 * @return True if the picture was successfully saved. 1241 */ 1242 public boolean savePicture(Bundle b, File dest) { 1243 if (dest == null || b == null) { 1244 return false; 1245 } 1246 final Picture p = capturePicture(); 1247 try { 1248 final FileOutputStream out = new FileOutputStream(dest); 1249 p.writeToStream(out); 1250 out.close(); 1251 } catch (FileNotFoundException e){ 1252 e.printStackTrace(); 1253 } catch (IOException e) { 1254 e.printStackTrace(); 1255 } catch (RuntimeException e) { 1256 e.printStackTrace(); 1257 } 1258 if (dest.length() > 0) { 1259 b.putInt("scrollX", mScrollX); 1260 b.putInt("scrollY", mScrollY); 1261 b.putFloat("scale", mActualScale); 1262 b.putFloat("textwrapScale", mTextWrapScale); 1263 b.putBoolean("overview", mInZoomOverview); 1264 return true; 1265 } 1266 return false; 1267 } 1268 1269 /** 1270 * Restore the display data that was save in {@link #savePicture}. Used in 1271 * conjunction with {@link #restoreState}. 1272 * @param b A Bundle containing the saved display data. 1273 * @param src The file where the picture data was stored. 1274 * @return True if the picture was successfully restored. 1275 */ 1276 public boolean restorePicture(Bundle b, File src) { 1277 if (src == null || b == null) { 1278 return false; 1279 } 1280 if (src.exists()) { 1281 Picture p = null; 1282 try { 1283 final FileInputStream in = new FileInputStream(src); 1284 p = Picture.createFromStream(in); 1285 in.close(); 1286 } catch (FileNotFoundException e){ 1287 e.printStackTrace(); 1288 } catch (RuntimeException e) { 1289 e.printStackTrace(); 1290 } catch (IOException e) { 1291 e.printStackTrace(); 1292 } 1293 if (p != null) { 1294 int sx = b.getInt("scrollX", 0); 1295 int sy = b.getInt("scrollY", 0); 1296 float scale = b.getFloat("scale", 1.0f); 1297 mDrawHistory = true; 1298 mHistoryPicture = p; 1299 mScrollX = sx; 1300 mScrollY = sy; 1301 mHistoryWidth = Math.round(p.getWidth() * scale); 1302 mHistoryHeight = Math.round(p.getHeight() * scale); 1303 // as getWidth() / getHeight() of the view are not 1304 // available yet, set up mActualScale, so that when 1305 // onSizeChanged() is called, the rest will be set 1306 // correctly 1307 mActualScale = scale; 1308 mTextWrapScale = b.getFloat("textwrapScale", scale); 1309 mInZoomOverview = b.getBoolean("overview"); 1310 invalidate(); 1311 return true; 1312 } 1313 } 1314 return false; 1315 } 1316 1317 /** 1318 * Restore the state of this WebView from the given map used in 1319 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1320 * be called to restore the state of the WebView before using the object. If 1321 * it is called after the WebView has had a chance to build state (load 1322 * pages, create a back/forward list, etc.) there may be undesirable 1323 * side-effects. Please note that this method no longer restores the 1324 * display data for this WebView. See {@link #savePicture} and {@link 1325 * #restorePicture} for saving and restoring the display data. 1326 * @param inState The incoming Bundle of state. 1327 * @return The restored back/forward list or null if restoreState failed. 1328 * @see #savePicture 1329 * @see #restorePicture 1330 */ 1331 public WebBackForwardList restoreState(Bundle inState) { 1332 WebBackForwardList returnList = null; 1333 if (inState == null) { 1334 return returnList; 1335 } 1336 if (inState.containsKey("index") && inState.containsKey("history")) { 1337 mCertificate = SslCertificate.restoreState( 1338 inState.getBundle("certificate")); 1339 1340 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1341 final int index = inState.getInt("index"); 1342 // We can't use a clone of the list because we need to modify the 1343 // shared copy, so synchronize instead to prevent concurrent 1344 // modifications. 1345 synchronized (list) { 1346 final List<byte[]> history = 1347 (List<byte[]>) inState.getSerializable("history"); 1348 final int size = history.size(); 1349 // Check the index bounds so we don't crash in native code while 1350 // restoring the history index. 1351 if (index < 0 || index >= size) { 1352 return null; 1353 } 1354 for (int i = 0; i < size; i++) { 1355 byte[] data = history.remove(0); 1356 if (data == null) { 1357 // If we somehow have null data, we cannot reconstruct 1358 // the item and thus our history list cannot be rebuilt. 1359 return null; 1360 } 1361 WebHistoryItem item = new WebHistoryItem(data); 1362 list.addHistoryItem(item); 1363 } 1364 // Grab the most recent copy to return to the caller. 1365 returnList = copyBackForwardList(); 1366 // Update the copy to have the correct index. 1367 returnList.setCurrentIndex(index); 1368 } 1369 // Remove all pending messages because we are restoring previous 1370 // state. 1371 mWebViewCore.removeMessages(); 1372 // Send a restore state message. 1373 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1374 } 1375 return returnList; 1376 } 1377 1378 /** 1379 * Load the given url with the extra headers. 1380 * @param url The url of the resource to load. 1381 * @param extraHeaders The extra headers sent with this url. This should not 1382 * include the common headers like "user-agent". If it does, it 1383 * will be replaced by the intrinsic value of the WebView. 1384 */ 1385 public void loadUrl(String url, Map<String, String> extraHeaders) { 1386 switchOutDrawHistory(); 1387 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1388 arg.mUrl = url; 1389 arg.mExtraHeaders = extraHeaders; 1390 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1391 clearTextEntry(); 1392 } 1393 1394 /** 1395 * Load the given url. 1396 * @param url The url of the resource to load. 1397 */ 1398 public void loadUrl(String url) { 1399 if (url == null) { 1400 return; 1401 } 1402 loadUrl(url, null); 1403 } 1404 1405 /** 1406 * Load the url with postData using "POST" method into the WebView. If url 1407 * is not a network url, it will be loaded with {link 1408 * {@link #loadUrl(String)} instead. 1409 * 1410 * @param url The url of the resource to load. 1411 * @param postData The data will be passed to "POST" request. 1412 */ 1413 public void postUrl(String url, byte[] postData) { 1414 if (URLUtil.isNetworkUrl(url)) { 1415 switchOutDrawHistory(); 1416 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1417 arg.mUrl = url; 1418 arg.mPostData = postData; 1419 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1420 clearTextEntry(); 1421 } else { 1422 loadUrl(url); 1423 } 1424 } 1425 1426 /** 1427 * Load the given data into the WebView. This will load the data into 1428 * WebView using the data: scheme. Content loaded through this mechanism 1429 * does not have the ability to load content from the network. 1430 * @param data A String of data in the given encoding. 1431 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1432 * @param encoding The encoding of the data. i.e. utf-8, base64 1433 */ 1434 public void loadData(String data, String mimeType, String encoding) { 1435 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1436 } 1437 1438 /** 1439 * Load the given data into the WebView, use the provided URL as the base 1440 * URL for the content. The base URL is the URL that represents the page 1441 * that is loaded through this interface. As such, it is used for the 1442 * history entry and to resolve any relative URLs. The failUrl is used if 1443 * browser fails to load the data provided. If it is empty or null, and the 1444 * load fails, then no history entry is created. 1445 * <p> 1446 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1447 * files through "file:///android_asset/" for the sub resources is more 1448 * restricted. If you provide null or empty string as baseUrl, you won't be 1449 * able to access asset files. If the baseUrl is anything other than 1450 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1451 * sub resources. 1452 * 1453 * @param baseUrl Url to resolve relative paths with, if null defaults to 1454 * "about:blank" 1455 * @param data A String of data in the given encoding. 1456 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1457 * defaults to "text/html" 1458 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1459 * @param failUrl URL to use if the content fails to load or null. 1460 */ 1461 public void loadDataWithBaseURL(String baseUrl, String data, 1462 String mimeType, String encoding, String failUrl) { 1463 1464 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1465 loadData(data, mimeType, encoding); 1466 return; 1467 } 1468 switchOutDrawHistory(); 1469 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1470 arg.mBaseUrl = baseUrl; 1471 arg.mData = data; 1472 arg.mMimeType = mimeType; 1473 arg.mEncoding = encoding; 1474 arg.mFailUrl = failUrl; 1475 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1476 clearTextEntry(); 1477 } 1478 1479 /** 1480 * Stop the current load. 1481 */ 1482 public void stopLoading() { 1483 // TODO: should we clear all the messages in the queue before sending 1484 // STOP_LOADING? 1485 switchOutDrawHistory(); 1486 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1487 } 1488 1489 /** 1490 * Reload the current url. 1491 */ 1492 public void reload() { 1493 clearTextEntry(); 1494 switchOutDrawHistory(); 1495 mWebViewCore.sendMessage(EventHub.RELOAD); 1496 } 1497 1498 /** 1499 * Return true if this WebView has a back history item. 1500 * @return True iff this WebView has a back history item. 1501 */ 1502 public boolean canGoBack() { 1503 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1504 synchronized (l) { 1505 if (l.getClearPending()) { 1506 return false; 1507 } else { 1508 return l.getCurrentIndex() > 0; 1509 } 1510 } 1511 } 1512 1513 /** 1514 * Go back in the history of this WebView. 1515 */ 1516 public void goBack() { 1517 goBackOrForward(-1); 1518 } 1519 1520 /** 1521 * Return true if this WebView has a forward history item. 1522 * @return True iff this Webview has a forward history item. 1523 */ 1524 public boolean canGoForward() { 1525 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1526 synchronized (l) { 1527 if (l.getClearPending()) { 1528 return false; 1529 } else { 1530 return l.getCurrentIndex() < l.getSize() - 1; 1531 } 1532 } 1533 } 1534 1535 /** 1536 * Go forward in the history of this WebView. 1537 */ 1538 public void goForward() { 1539 goBackOrForward(1); 1540 } 1541 1542 /** 1543 * Return true if the page can go back or forward the given 1544 * number of steps. 1545 * @param steps The negative or positive number of steps to move the 1546 * history. 1547 */ 1548 public boolean canGoBackOrForward(int steps) { 1549 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1550 synchronized (l) { 1551 if (l.getClearPending()) { 1552 return false; 1553 } else { 1554 int newIndex = l.getCurrentIndex() + steps; 1555 return newIndex >= 0 && newIndex < l.getSize(); 1556 } 1557 } 1558 } 1559 1560 /** 1561 * Go to the history item that is the number of steps away from 1562 * the current item. Steps is negative if backward and positive 1563 * if forward. 1564 * @param steps The number of steps to take back or forward in the back 1565 * forward list. 1566 */ 1567 public void goBackOrForward(int steps) { 1568 goBackOrForward(steps, false); 1569 } 1570 1571 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1572 // every time we go back or forward, we want to reset the 1573 // WebView certificate: 1574 // if the new site is secure, we will reload it and get a 1575 // new certificate set; 1576 // if the new site is not secure, the certificate must be 1577 // null, and that will be the case 1578 mCertificate = null; 1579 if (steps != 0) { 1580 clearTextEntry(); 1581 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1582 ignoreSnapshot ? 1 : 0); 1583 } 1584 } 1585 1586 private boolean extendScroll(int y) { 1587 int finalY = mScroller.getFinalY(); 1588 int newY = pinLocY(finalY + y); 1589 if (newY == finalY) return false; 1590 mScroller.setFinalY(newY); 1591 mScroller.extendDuration(computeDuration(0, y)); 1592 return true; 1593 } 1594 1595 /** 1596 * Scroll the contents of the view up by half the view size 1597 * @param top true to jump to the top of the page 1598 * @return true if the page was scrolled 1599 */ 1600 public boolean pageUp(boolean top) { 1601 if (mNativeClass == 0) { 1602 return false; 1603 } 1604 nativeClearCursor(); // start next trackball movement from page edge 1605 if (top) { 1606 // go to the top of the document 1607 return pinScrollTo(mScrollX, 0, true, 0); 1608 } 1609 // Page up 1610 int h = getHeight(); 1611 int y; 1612 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1613 y = -h + PAGE_SCROLL_OVERLAP; 1614 } else { 1615 y = -h / 2; 1616 } 1617 mUserScroll = true; 1618 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1619 : extendScroll(y); 1620 } 1621 1622 /** 1623 * Scroll the contents of the view down by half the page size 1624 * @param bottom true to jump to bottom of page 1625 * @return true if the page was scrolled 1626 */ 1627 public boolean pageDown(boolean bottom) { 1628 if (mNativeClass == 0) { 1629 return false; 1630 } 1631 nativeClearCursor(); // start next trackball movement from page edge 1632 if (bottom) { 1633 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1634 } 1635 // Page down. 1636 int h = getHeight(); 1637 int y; 1638 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1639 y = h - PAGE_SCROLL_OVERLAP; 1640 } else { 1641 y = h / 2; 1642 } 1643 mUserScroll = true; 1644 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1645 : extendScroll(y); 1646 } 1647 1648 /** 1649 * Clear the view so that onDraw() will draw nothing but white background, 1650 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1651 */ 1652 public void clearView() { 1653 mContentWidth = 0; 1654 mContentHeight = 0; 1655 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1656 } 1657 1658 /** 1659 * Return a new picture that captures the current display of the webview. 1660 * This is a copy of the display, and will be unaffected if the webview 1661 * later loads a different URL. 1662 * 1663 * @return a picture containing the current contents of the view. Note this 1664 * picture is of the entire document, and is not restricted to the 1665 * bounds of the view. 1666 */ 1667 public Picture capturePicture() { 1668 if (null == mWebViewCore) return null; // check for out of memory tab 1669 return mWebViewCore.copyContentPicture(); 1670 } 1671 1672 /** 1673 * Return true if the browser is displaying a TextView for text input. 1674 */ 1675 private boolean inEditingMode() { 1676 return mWebTextView != null && mWebTextView.getParent() != null 1677 && mWebTextView.hasFocus(); 1678 } 1679 1680 private void clearTextEntry() { 1681 if (inEditingMode()) { 1682 mWebTextView.remove(); 1683 } 1684 } 1685 1686 /** 1687 * Return the current scale of the WebView 1688 * @return The current scale. 1689 */ 1690 public float getScale() { 1691 return mActualScale; 1692 } 1693 1694 /** 1695 * Set the initial scale for the WebView. 0 means default. If 1696 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1697 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1698 * WebView starts will this value as initial scale. 1699 * 1700 * @param scaleInPercent The initial scale in percent. 1701 */ 1702 public void setInitialScale(int scaleInPercent) { 1703 mInitialScaleInPercent = scaleInPercent; 1704 } 1705 1706 /** 1707 * Invoke the graphical zoom picker widget for this WebView. This will 1708 * result in the zoom widget appearing on the screen to control the zoom 1709 * level of this WebView. 1710 */ 1711 public void invokeZoomPicker() { 1712 if (!getSettings().supportZoom()) { 1713 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1714 return; 1715 } 1716 clearTextEntry(); 1717 if (getSettings().getBuiltInZoomControls()) { 1718 mZoomButtonsController.setVisible(true); 1719 } else { 1720 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1721 mPrivateHandler.postDelayed(mZoomControlRunnable, 1722 ZOOM_CONTROLS_TIMEOUT); 1723 } 1724 } 1725 1726 /** 1727 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1728 * is found and the anchor has a non-javascript url, the HitTestResult type 1729 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1730 * anchor does not have a url or if it is a javascript url, the type will 1731 * be UNKNOWN_TYPE and the url has to be retrieved through 1732 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1733 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1734 * the "extra" field. A type of 1735 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1736 * a child node. If a phone number is found, the HitTestResult type is set 1737 * to PHONE_TYPE and the phone number is set in the "extra" field of 1738 * HitTestResult. If a map address is found, the HitTestResult type is set 1739 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1740 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1741 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1742 * HitTestResult type is set to UNKNOWN_TYPE. 1743 */ 1744 public HitTestResult getHitTestResult() { 1745 if (mNativeClass == 0) { 1746 return null; 1747 } 1748 1749 HitTestResult result = new HitTestResult(); 1750 if (nativeHasCursorNode()) { 1751 if (nativeCursorIsTextInput()) { 1752 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1753 } else { 1754 String text = nativeCursorText(); 1755 if (text != null) { 1756 if (text.startsWith(SCHEME_TEL)) { 1757 result.setType(HitTestResult.PHONE_TYPE); 1758 result.setExtra(text.substring(SCHEME_TEL.length())); 1759 } else if (text.startsWith(SCHEME_MAILTO)) { 1760 result.setType(HitTestResult.EMAIL_TYPE); 1761 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1762 } else if (text.startsWith(SCHEME_GEO)) { 1763 result.setType(HitTestResult.GEO_TYPE); 1764 result.setExtra(URLDecoder.decode(text 1765 .substring(SCHEME_GEO.length()))); 1766 } else if (nativeCursorIsAnchor()) { 1767 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1768 result.setExtra(text); 1769 } 1770 } 1771 } 1772 } 1773 int type = result.getType(); 1774 if (type == HitTestResult.UNKNOWN_TYPE 1775 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1776 // Now check to see if it is an image. 1777 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1778 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1779 String text = nativeImageURI(contentX, contentY); 1780 if (text != null) { 1781 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1782 HitTestResult.IMAGE_TYPE : 1783 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1784 result.setExtra(text); 1785 } 1786 } 1787 return result; 1788 } 1789 1790 // Called by JNI when the DOM has changed the focus. Clear the focus so 1791 // that new keys will go to the newly focused field 1792 private void domChangedFocus() { 1793 if (inEditingMode()) { 1794 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 1795 } 1796 } 1797 /** 1798 * Request the href of an anchor element due to getFocusNodePath returning 1799 * "href." If hrefMsg is null, this method returns immediately and does not 1800 * dispatch hrefMsg to its target. 1801 * 1802 * @param hrefMsg This message will be dispatched with the result of the 1803 * request as the data member with "url" as key. The result can 1804 * be null. 1805 */ 1806 // FIXME: API change required to change the name of this function. We now 1807 // look at the cursor node, and not the focus node. Also, what is 1808 // getFocusNodePath? 1809 public void requestFocusNodeHref(Message hrefMsg) { 1810 if (hrefMsg == null || mNativeClass == 0) { 1811 return; 1812 } 1813 if (nativeCursorIsAnchor()) { 1814 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1815 nativeCursorFramePointer(), nativeCursorNodePointer(), 1816 hrefMsg); 1817 } 1818 } 1819 1820 /** 1821 * Request the url of the image last touched by the user. msg will be sent 1822 * to its target with a String representing the url as its object. 1823 * 1824 * @param msg This message will be dispatched with the result of the request 1825 * as the data member with "url" as key. The result can be null. 1826 */ 1827 public void requestImageRef(Message msg) { 1828 if (0 == mNativeClass) return; // client isn't initialized 1829 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1830 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1831 String ref = nativeImageURI(contentX, contentY); 1832 Bundle data = msg.getData(); 1833 data.putString("url", ref); 1834 msg.setData(data); 1835 msg.sendToTarget(); 1836 } 1837 1838 private static int pinLoc(int x, int viewMax, int docMax) { 1839// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1840 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1841 // pin the short document to the top/left of the screen 1842 x = 0; 1843// Log.d(LOGTAG, "--- center " + x); 1844 } else if (x < 0) { 1845 x = 0; 1846// Log.d(LOGTAG, "--- zero"); 1847 } else if (x + viewMax > docMax) { 1848 x = docMax - viewMax; 1849// Log.d(LOGTAG, "--- pin " + x); 1850 } 1851 return x; 1852 } 1853 1854 // Expects x in view coordinates 1855 private int pinLocX(int x) { 1856 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1857 } 1858 1859 // Expects y in view coordinates 1860 private int pinLocY(int y) { 1861 int titleH = getTitleHeight(); 1862 // if the titlebar is still visible, just pin against 0 1863 if (y <= titleH) { 1864 return Math.max(y, 0); 1865 } 1866 // convert to 0-based coordinate (subtract the title height) 1867 // pin(), and then add the title height back in 1868 return pinLoc(y - titleH, getViewHeight(), 1869 computeVerticalScrollRange()) + titleH; 1870 } 1871 1872 /** 1873 * A title bar which is embedded in this WebView, and scrolls along with it 1874 * vertically, but not horizontally. 1875 */ 1876 private View mTitleBar; 1877 1878 /** 1879 * Since we draw the title bar ourselves, we removed the shadow from the 1880 * browser's activity. We do want a shadow at the bottom of the title bar, 1881 * or at the top of the screen if the title bar is not visible. This 1882 * drawable serves that purpose. 1883 */ 1884 private Drawable mTitleShadow; 1885 1886 /** 1887 * Add or remove a title bar to be embedded into the WebView, and scroll 1888 * along with it vertically, while remaining in view horizontally. Pass 1889 * null to remove the title bar from the WebView, and return to drawing 1890 * the WebView normally without translating to account for the title bar. 1891 * @hide 1892 */ 1893 public void setEmbeddedTitleBar(View v) { 1894 if (mTitleBar == v) return; 1895 if (mTitleBar != null) { 1896 removeView(mTitleBar); 1897 } 1898 if (null != v) { 1899 addView(v, new AbsoluteLayout.LayoutParams( 1900 ViewGroup.LayoutParams.MATCH_PARENT, 1901 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1902 if (mTitleShadow == null) { 1903 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1904 com.android.internal.R.drawable.title_bar_shadow); 1905 } 1906 } 1907 mTitleBar = v; 1908 } 1909 1910 /** 1911 * Given a distance in view space, convert it to content space. Note: this 1912 * does not reflect translation, just scaling, so this should not be called 1913 * with coordinates, but should be called for dimensions like width or 1914 * height. 1915 */ 1916 private int viewToContentDimension(int d) { 1917 return Math.round(d * mInvActualScale); 1918 } 1919 1920 /** 1921 * Given an x coordinate in view space, convert it to content space. Also 1922 * may be used for absolute heights (such as for the WebTextView's 1923 * textSize, which is unaffected by the height of the title bar). 1924 */ 1925 /*package*/ int viewToContentX(int x) { 1926 return viewToContentDimension(x); 1927 } 1928 1929 /** 1930 * Given a y coordinate in view space, convert it to content space. 1931 * Takes into account the height of the title bar if there is one 1932 * embedded into the WebView. 1933 */ 1934 /*package*/ int viewToContentY(int y) { 1935 return viewToContentDimension(y - getTitleHeight()); 1936 } 1937 1938 /** 1939 * Given a distance in content space, convert it to view space. Note: this 1940 * does not reflect translation, just scaling, so this should not be called 1941 * with coordinates, but should be called for dimensions like width or 1942 * height. 1943 */ 1944 /*package*/ int contentToViewDimension(int d) { 1945 return Math.round(d * mActualScale); 1946 } 1947 1948 /** 1949 * Given an x coordinate in content space, convert it to view 1950 * space. 1951 */ 1952 /*package*/ int contentToViewX(int x) { 1953 return contentToViewDimension(x); 1954 } 1955 1956 /** 1957 * Given a y coordinate in content space, convert it to view 1958 * space. Takes into account the height of the title bar. 1959 */ 1960 /*package*/ int contentToViewY(int y) { 1961 return contentToViewDimension(y) + getTitleHeight(); 1962 } 1963 1964 private Rect contentToViewRect(Rect x) { 1965 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 1966 contentToViewX(x.right), contentToViewY(x.bottom)); 1967 } 1968 1969 /* To invalidate a rectangle in content coordinates, we need to transform 1970 the rect into view coordinates, so we can then call invalidate(...). 1971 1972 Normally, we would just call contentToView[XY](...), which eventually 1973 calls Math.round(coordinate * mActualScale). However, for invalidates, 1974 we need to account for the slop that occurs with antialiasing. To 1975 address that, we are a little more liberal in the size of the rect that 1976 we invalidate. 1977 1978 This liberal calculation calls floor() for the top/left, and ceil() for 1979 the bottom/right coordinates. This catches the possible extra pixels of 1980 antialiasing that we might have missed with just round(). 1981 */ 1982 1983 // Called by JNI to invalidate the View, given rectangle coordinates in 1984 // content space 1985 private void viewInvalidate(int l, int t, int r, int b) { 1986 final float scale = mActualScale; 1987 final int dy = getTitleHeight(); 1988 invalidate((int)Math.floor(l * scale), 1989 (int)Math.floor(t * scale) + dy, 1990 (int)Math.ceil(r * scale), 1991 (int)Math.ceil(b * scale) + dy); 1992 } 1993 1994 // Called by JNI to invalidate the View after a delay, given rectangle 1995 // coordinates in content space 1996 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 1997 final float scale = mActualScale; 1998 final int dy = getTitleHeight(); 1999 postInvalidateDelayed(delay, 2000 (int)Math.floor(l * scale), 2001 (int)Math.floor(t * scale) + dy, 2002 (int)Math.ceil(r * scale), 2003 (int)Math.ceil(b * scale) + dy); 2004 } 2005 2006 private void invalidateContentRect(Rect r) { 2007 viewInvalidate(r.left, r.top, r.right, r.bottom); 2008 } 2009 2010 // stop the scroll animation, and don't let a subsequent fling add 2011 // to the existing velocity 2012 private void abortAnimation() { 2013 mScroller.abortAnimation(); 2014 mLastVelocity = 0; 2015 } 2016 2017 /* call from webcoreview.draw(), so we're still executing in the UI thread 2018 */ 2019 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2020 2021 // premature data from webkit, ignore 2022 if ((w | h) == 0) { 2023 return; 2024 } 2025 2026 // don't abort a scroll animation if we didn't change anything 2027 if (mContentWidth != w || mContentHeight != h) { 2028 // record new dimensions 2029 mContentWidth = w; 2030 mContentHeight = h; 2031 // If history Picture is drawn, don't update scroll. They will be 2032 // updated when we get out of that mode. 2033 if (!mDrawHistory) { 2034 // repin our scroll, taking into account the new content size 2035 int oldX = mScrollX; 2036 int oldY = mScrollY; 2037 mScrollX = pinLocX(mScrollX); 2038 mScrollY = pinLocY(mScrollY); 2039 if (oldX != mScrollX || oldY != mScrollY) { 2040 sendOurVisibleRect(); 2041 } 2042 if (!mScroller.isFinished()) { 2043 // We are in the middle of a scroll. Repin the final scroll 2044 // position. 2045 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2046 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2047 } 2048 } 2049 } 2050 contentSizeChanged(updateLayout); 2051 } 2052 2053 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 2054 boolean force) { 2055 if (scale < mMinZoomScale) { 2056 scale = mMinZoomScale; 2057 } else if (scale > mMaxZoomScale) { 2058 scale = mMaxZoomScale; 2059 } 2060 if (updateTextWrapScale) { 2061 mTextWrapScale = scale; 2062 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 2063 mLastHeightSent = 0; 2064 } 2065 if (scale != mActualScale || force) { 2066 if (mDrawHistory) { 2067 // If history Picture is drawn, don't update scroll. They will 2068 // be updated when we get out of that mode. 2069 if (scale != mActualScale && !mPreviewZoomOnly) { 2070 mCallbackProxy.onScaleChanged(mActualScale, scale); 2071 } 2072 mActualScale = scale; 2073 mInvActualScale = 1 / scale; 2074 sendViewSizeZoom(); 2075 } else { 2076 // update our scroll so we don't appear to jump 2077 // i.e. keep the center of the doc in the center of the view 2078 2079 int oldX = mScrollX; 2080 int oldY = mScrollY; 2081 float ratio = scale * mInvActualScale; // old inverse 2082 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2083 float sy = ratio * oldY + (ratio - 1) 2084 * (mZoomCenterY - getTitleHeight()); 2085 2086 // now update our new scale and inverse 2087 if (scale != mActualScale && !mPreviewZoomOnly) { 2088 mCallbackProxy.onScaleChanged(mActualScale, scale); 2089 } 2090 mActualScale = scale; 2091 mInvActualScale = 1 / scale; 2092 2093 // Scale all the child views 2094 mViewManager.scaleAll(); 2095 2096 // as we don't have animation for scaling, don't do animation 2097 // for scrolling, as it causes weird intermediate state 2098 // pinScrollTo(Math.round(sx), Math.round(sy)); 2099 mScrollX = pinLocX(Math.round(sx)); 2100 mScrollY = pinLocY(Math.round(sy)); 2101 2102 // update webkit 2103 sendViewSizeZoom(); 2104 sendOurVisibleRect(); 2105 } 2106 } 2107 } 2108 2109 // Used to avoid sending many visible rect messages. 2110 private Rect mLastVisibleRectSent; 2111 private Rect mLastGlobalRect; 2112 2113 private Rect sendOurVisibleRect() { 2114 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2115 2116 Rect rect = new Rect(); 2117 calcOurContentVisibleRect(rect); 2118 // Rect.equals() checks for null input. 2119 if (!rect.equals(mLastVisibleRectSent)) { 2120 Point pos = new Point(rect.left, rect.top); 2121 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2122 nativeMoveGeneration(), 0, pos); 2123 mLastVisibleRectSent = rect; 2124 } 2125 Rect globalRect = new Rect(); 2126 if (getGlobalVisibleRect(globalRect) 2127 && !globalRect.equals(mLastGlobalRect)) { 2128 if (DebugFlags.WEB_VIEW) { 2129 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2130 + globalRect.top + ",r=" + globalRect.right + ",b=" 2131 + globalRect.bottom); 2132 } 2133 // TODO: the global offset is only used by windowRect() 2134 // in ChromeClientAndroid ; other clients such as touch 2135 // and mouse events could return view + screen relative points. 2136 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2137 mLastGlobalRect = globalRect; 2138 } 2139 return rect; 2140 } 2141 2142 // Sets r to be the visible rectangle of our webview in view coordinates 2143 private void calcOurVisibleRect(Rect r) { 2144 Point p = new Point(); 2145 getGlobalVisibleRect(r, p); 2146 r.offset(-p.x, -p.y); 2147 if (mFindIsUp) { 2148 r.bottom -= mFindHeight; 2149 } 2150 } 2151 2152 // Sets r to be our visible rectangle in content coordinates 2153 private void calcOurContentVisibleRect(Rect r) { 2154 calcOurVisibleRect(r); 2155 r.left = viewToContentX(r.left); 2156 // viewToContentY will remove the total height of the title bar. Add 2157 // the visible height back in to account for the fact that if the title 2158 // bar is partially visible, the part of the visible rect which is 2159 // displaying our content is displaced by that amount. 2160 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2161 r.right = viewToContentX(r.right); 2162 r.bottom = viewToContentY(r.bottom); 2163 } 2164 2165 static class ViewSizeData { 2166 int mWidth; 2167 int mHeight; 2168 int mTextWrapWidth; 2169 int mAnchorX; 2170 int mAnchorY; 2171 float mScale; 2172 boolean mIgnoreHeight; 2173 } 2174 2175 /** 2176 * Compute unzoomed width and height, and if they differ from the last 2177 * values we sent, send them to webkit (to be used has new viewport) 2178 * 2179 * @return true if new values were sent 2180 */ 2181 private boolean sendViewSizeZoom() { 2182 if (mPreviewZoomOnly) return false; 2183 2184 int viewWidth = getViewWidth(); 2185 int newWidth = Math.round(viewWidth * mInvActualScale); 2186 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2187 /* 2188 * Because the native side may have already done a layout before the 2189 * View system was able to measure us, we have to send a height of 0 to 2190 * remove excess whitespace when we grow our width. This will trigger a 2191 * layout and a change in content size. This content size change will 2192 * mean that contentSizeChanged will either call this method directly or 2193 * indirectly from onSizeChanged. 2194 */ 2195 if (newWidth > mLastWidthSent && mWrapContent) { 2196 newHeight = 0; 2197 } 2198 // Avoid sending another message if the dimensions have not changed. 2199 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2200 ViewSizeData data = new ViewSizeData(); 2201 data.mWidth = newWidth; 2202 data.mHeight = newHeight; 2203 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2204 data.mScale = mActualScale; 2205 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2206 data.mAnchorX = mAnchorX; 2207 data.mAnchorY = mAnchorY; 2208 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2209 mLastWidthSent = newWidth; 2210 mLastHeightSent = newHeight; 2211 mAnchorX = mAnchorY = 0; 2212 return true; 2213 } 2214 return false; 2215 } 2216 2217 @Override 2218 protected int computeHorizontalScrollRange() { 2219 if (mDrawHistory) { 2220 return mHistoryWidth; 2221 } else { 2222 // to avoid rounding error caused unnecessary scrollbar, use floor 2223 return (int) Math.floor(mContentWidth * mActualScale); 2224 } 2225 } 2226 2227 @Override 2228 protected int computeVerticalScrollRange() { 2229 if (mDrawHistory) { 2230 return mHistoryHeight; 2231 } else { 2232 // to avoid rounding error caused unnecessary scrollbar, use floor 2233 return (int) Math.floor(mContentHeight * mActualScale); 2234 } 2235 } 2236 2237 @Override 2238 protected int computeVerticalScrollOffset() { 2239 return Math.max(mScrollY - getTitleHeight(), 0); 2240 } 2241 2242 @Override 2243 protected int computeVerticalScrollExtent() { 2244 return getViewHeight(); 2245 } 2246 2247 /** @hide */ 2248 @Override 2249 protected void onDrawVerticalScrollBar(Canvas canvas, 2250 Drawable scrollBar, 2251 int l, int t, int r, int b) { 2252 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2253 scrollBar.draw(canvas); 2254 } 2255 2256 /** 2257 * Get the url for the current page. This is not always the same as the url 2258 * passed to WebViewClient.onPageStarted because although the load for 2259 * that url has begun, the current page may not have changed. 2260 * @return The url for the current page. 2261 */ 2262 public String getUrl() { 2263 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2264 return h != null ? h.getUrl() : null; 2265 } 2266 2267 /** 2268 * Get the original url for the current page. This is not always the same 2269 * as the url passed to WebViewClient.onPageStarted because although the 2270 * load for that url has begun, the current page may not have changed. 2271 * Also, there may have been redirects resulting in a different url to that 2272 * originally requested. 2273 * @return The url that was originally requested for the current page. 2274 */ 2275 public String getOriginalUrl() { 2276 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2277 return h != null ? h.getOriginalUrl() : null; 2278 } 2279 2280 /** 2281 * Get the title for the current page. This is the title of the current page 2282 * until WebViewClient.onReceivedTitle is called. 2283 * @return The title for the current page. 2284 */ 2285 public String getTitle() { 2286 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2287 return h != null ? h.getTitle() : null; 2288 } 2289 2290 /** 2291 * Get the favicon for the current page. This is the favicon of the current 2292 * page until WebViewClient.onReceivedIcon is called. 2293 * @return The favicon for the current page. 2294 */ 2295 public Bitmap getFavicon() { 2296 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2297 return h != null ? h.getFavicon() : null; 2298 } 2299 2300 /** 2301 * Get the touch icon url for the apple-touch-icon <link> element. 2302 * @hide 2303 */ 2304 public String getTouchIconUrl() { 2305 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2306 return h != null ? h.getTouchIconUrl() : null; 2307 } 2308 2309 /** 2310 * Get the progress for the current page. 2311 * @return The progress for the current page between 0 and 100. 2312 */ 2313 public int getProgress() { 2314 return mCallbackProxy.getProgress(); 2315 } 2316 2317 /** 2318 * @return the height of the HTML content. 2319 */ 2320 public int getContentHeight() { 2321 return mContentHeight; 2322 } 2323 2324 /** 2325 * @return the width of the HTML content. 2326 * @hide 2327 */ 2328 public int getContentWidth() { 2329 return mContentWidth; 2330 } 2331 2332 /** 2333 * Pause all layout, parsing, and javascript timers for all webviews. This 2334 * is a global requests, not restricted to just this webview. This can be 2335 * useful if the application has been paused. 2336 */ 2337 public void pauseTimers() { 2338 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2339 } 2340 2341 /** 2342 * Resume all layout, parsing, and javascript timers for all webviews. 2343 * This will resume dispatching all timers. 2344 */ 2345 public void resumeTimers() { 2346 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2347 } 2348 2349 /** 2350 * Call this to pause any extra processing associated with this view and 2351 * its associated DOM/plugins/javascript/etc. For example, if the view is 2352 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2353 * network traffic. When the view is again "active", call onResume(). 2354 * 2355 * Note that this differs from pauseTimers(), which affects all views/DOMs 2356 * @hide 2357 */ 2358 public void onPause() { 2359 if (!mIsPaused) { 2360 mIsPaused = true; 2361 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2362 } 2363 } 2364 2365 /** 2366 * Call this to balanace a previous call to onPause() 2367 * @hide 2368 */ 2369 public void onResume() { 2370 if (mIsPaused) { 2371 mIsPaused = false; 2372 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2373 } 2374 } 2375 2376 /** 2377 * Returns true if the view is paused, meaning onPause() was called. Calling 2378 * onResume() sets the paused state back to false. 2379 * @hide 2380 */ 2381 public boolean isPaused() { 2382 return mIsPaused; 2383 } 2384 2385 /** 2386 * Call this to inform the view that memory is low so that it can 2387 * free any available memory. 2388 */ 2389 public void freeMemory() { 2390 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2391 } 2392 2393 /** 2394 * Clear the resource cache. Note that the cache is per-application, so 2395 * this will clear the cache for all WebViews used. 2396 * 2397 * @param includeDiskFiles If false, only the RAM cache is cleared. 2398 */ 2399 public void clearCache(boolean includeDiskFiles) { 2400 // Note: this really needs to be a static method as it clears cache for all 2401 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2402 // we can't make this static. 2403 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2404 includeDiskFiles ? 1 : 0, 0); 2405 } 2406 2407 /** 2408 * Make sure that clearing the form data removes the adapter from the 2409 * currently focused textfield if there is one. 2410 */ 2411 public void clearFormData() { 2412 if (inEditingMode()) { 2413 AutoCompleteAdapter adapter = null; 2414 mWebTextView.setAdapterCustom(adapter); 2415 } 2416 } 2417 2418 /** 2419 * Tell the WebView to clear its internal back/forward list. 2420 */ 2421 public void clearHistory() { 2422 mCallbackProxy.getBackForwardList().setClearPending(); 2423 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2424 } 2425 2426 /** 2427 * Clear the SSL preferences table stored in response to proceeding with SSL 2428 * certificate errors. 2429 */ 2430 public void clearSslPreferences() { 2431 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2432 } 2433 2434 /** 2435 * Return the WebBackForwardList for this WebView. This contains the 2436 * back/forward list for use in querying each item in the history stack. 2437 * This is a copy of the private WebBackForwardList so it contains only a 2438 * snapshot of the current state. Multiple calls to this method may return 2439 * different objects. The object returned from this method will not be 2440 * updated to reflect any new state. 2441 */ 2442 public WebBackForwardList copyBackForwardList() { 2443 return mCallbackProxy.getBackForwardList().clone(); 2444 } 2445 2446 /* 2447 * Highlight and scroll to the next occurance of String in findAll. 2448 * Wraps the page infinitely, and scrolls. Must be called after 2449 * calling findAll. 2450 * 2451 * @param forward Direction to search. 2452 */ 2453 public void findNext(boolean forward) { 2454 if (0 == mNativeClass) return; // client isn't initialized 2455 nativeFindNext(forward); 2456 } 2457 2458 /* 2459 * Find all instances of find on the page and highlight them. 2460 * @param find String to find. 2461 * @return int The number of occurances of the String "find" 2462 * that were found. 2463 */ 2464 public int findAll(String find) { 2465 if (0 == mNativeClass) return 0; // client isn't initialized 2466 if (mFindIsUp == false) { 2467 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2468 false); 2469 mFindIsUp = true; 2470 } 2471 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2472 invalidate(); 2473 mLastFind = find; 2474 return result; 2475 } 2476 2477 // Used to know whether the find dialog is open. Affects whether 2478 // or not we draw the highlights for matches. 2479 private boolean mFindIsUp; 2480 private int mFindHeight; 2481 // Keep track of the last string sent, so we can search again after an 2482 // orientation change or the dismissal of the soft keyboard. 2483 private String mLastFind; 2484 2485 /** 2486 * Return the first substring consisting of the address of a physical 2487 * location. Currently, only addresses in the United States are detected, 2488 * and consist of: 2489 * - a house number 2490 * - a street name 2491 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2492 * - a city name 2493 * - a state or territory, either spelled out or two-letter abbr. 2494 * - an optional 5 digit or 9 digit zip code. 2495 * 2496 * All names must be correctly capitalized, and the zip code, if present, 2497 * must be valid for the state. The street type must be a standard USPS 2498 * spelling or abbreviation. The state or territory must also be spelled 2499 * or abbreviated using USPS standards. The house number may not exceed 2500 * five digits. 2501 * @param addr The string to search for addresses. 2502 * 2503 * @return the address, or if no address is found, return null. 2504 */ 2505 public static String findAddress(String addr) { 2506 return findAddress(addr, false); 2507 } 2508 2509 /** 2510 * @hide 2511 * Return the first substring consisting of the address of a physical 2512 * location. Currently, only addresses in the United States are detected, 2513 * and consist of: 2514 * - a house number 2515 * - a street name 2516 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2517 * - a city name 2518 * - a state or territory, either spelled out or two-letter abbr. 2519 * - an optional 5 digit or 9 digit zip code. 2520 * 2521 * Names are optionally capitalized, and the zip code, if present, 2522 * must be valid for the state. The street type must be a standard USPS 2523 * spelling or abbreviation. The state or territory must also be spelled 2524 * or abbreviated using USPS standards. The house number may not exceed 2525 * five digits. 2526 * @param addr The string to search for addresses. 2527 * @param caseInsensitive addr Set to true to make search ignore case. 2528 * 2529 * @return the address, or if no address is found, return null. 2530 */ 2531 public static String findAddress(String addr, boolean caseInsensitive) { 2532 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2533 } 2534 2535 /* 2536 * Clear the highlighting surrounding text matches created by findAll. 2537 */ 2538 public void clearMatches() { 2539 if (mNativeClass == 0) 2540 return; 2541 if (mFindIsUp) { 2542 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2543 false); 2544 mFindIsUp = false; 2545 } 2546 nativeSetFindIsUp(); 2547 // Now that the dialog has been removed, ensure that we scroll to a 2548 // location that is not beyond the end of the page. 2549 pinScrollTo(mScrollX, mScrollY, false, 0); 2550 invalidate(); 2551 } 2552 2553 /** 2554 * @hide 2555 */ 2556 public void setFindDialogHeight(int height) { 2557 if (DebugFlags.WEB_VIEW) { 2558 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2559 } 2560 mFindHeight = height; 2561 } 2562 2563 /** 2564 * Query the document to see if it contains any image references. The 2565 * message object will be dispatched with arg1 being set to 1 if images 2566 * were found and 0 if the document does not reference any images. 2567 * @param response The message that will be dispatched with the result. 2568 */ 2569 public void documentHasImages(Message response) { 2570 if (response == null) { 2571 return; 2572 } 2573 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2574 } 2575 2576 @Override 2577 public void computeScroll() { 2578 if (mScroller.computeScrollOffset()) { 2579 int oldX = mScrollX; 2580 int oldY = mScrollY; 2581 mScrollX = mScroller.getCurrX(); 2582 mScrollY = mScroller.getCurrY(); 2583 postInvalidate(); // So we draw again 2584 if (oldX != mScrollX || oldY != mScrollY) { 2585 // as onScrollChanged() is not called, sendOurVisibleRect() 2586 // needs to be call explicitly 2587 sendOurVisibleRect(); 2588 } 2589 } else { 2590 super.computeScroll(); 2591 } 2592 } 2593 2594 private static int computeDuration(int dx, int dy) { 2595 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2596 int duration = distance * 1000 / STD_SPEED; 2597 return Math.min(duration, MAX_DURATION); 2598 } 2599 2600 // helper to pin the scrollBy parameters (already in view coordinates) 2601 // returns true if the scroll was changed 2602 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2603 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2604 } 2605 // helper to pin the scrollTo parameters (already in view coordinates) 2606 // returns true if the scroll was changed 2607 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2608 x = pinLocX(x); 2609 y = pinLocY(y); 2610 int dx = x - mScrollX; 2611 int dy = y - mScrollY; 2612 2613 if ((dx | dy) == 0) { 2614 return false; 2615 } 2616 if (animate) { 2617 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2618 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2619 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2620 awakenScrollBars(mScroller.getDuration()); 2621 invalidate(); 2622 } else { 2623 abortAnimation(); // just in case 2624 scrollTo(x, y); 2625 } 2626 return true; 2627 } 2628 2629 // Scale from content to view coordinates, and pin. 2630 // Also called by jni webview.cpp 2631 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2632 if (mDrawHistory) { 2633 // disallow WebView to change the scroll position as History Picture 2634 // is used in the view system. 2635 // TODO: as we switchOutDrawHistory when trackball or navigation 2636 // keys are hit, this should be safe. Right? 2637 return false; 2638 } 2639 cx = contentToViewDimension(cx); 2640 cy = contentToViewDimension(cy); 2641 if (mHeightCanMeasure) { 2642 // move our visible rect according to scroll request 2643 if (cy != 0) { 2644 Rect tempRect = new Rect(); 2645 calcOurVisibleRect(tempRect); 2646 tempRect.offset(cx, cy); 2647 requestRectangleOnScreen(tempRect); 2648 } 2649 // FIXME: We scroll horizontally no matter what because currently 2650 // ScrollView and ListView will not scroll horizontally. 2651 // FIXME: Why do we only scroll horizontally if there is no 2652 // vertical scroll? 2653// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2654 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2655 } else { 2656 return pinScrollBy(cx, cy, animate, 0); 2657 } 2658 } 2659 2660 /** 2661 * Called by CallbackProxy when the page finishes loading. 2662 * @param url The URL of the page which has finished loading. 2663 */ 2664 /* package */ void onPageFinished(String url) { 2665 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 2666 // If the user is now on a different page, or has scrolled the page 2667 // past the point where the title bar is offscreen, ignore the 2668 // scroll request. 2669 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 2670 && mScrollX == 0 && mScrollY == 0) { 2671 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 2672 SLIDE_TITLE_DURATION); 2673 } 2674 mPageThatNeedsToSlideTitleBarOffScreen = null; 2675 } 2676 } 2677 2678 /** 2679 * The URL of a page that sent a message to scroll the title bar off screen. 2680 * 2681 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 2682 * title bar off the screen. Sometimes, the scroll position is set before 2683 * the page finishes loading. Rather than scrolling while the page is still 2684 * loading, keep track of the URL and new scroll position so we can perform 2685 * the scroll once the page finishes loading. 2686 */ 2687 private String mPageThatNeedsToSlideTitleBarOffScreen; 2688 2689 /** 2690 * The destination Y scroll position to be used when the page finishes 2691 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 2692 */ 2693 private int mYDistanceToSlideTitleOffScreen; 2694 2695 // scale from content to view coordinates, and pin 2696 // return true if pin caused the final x/y different than the request cx/cy, 2697 // and a future scroll may reach the request cx/cy after our size has 2698 // changed 2699 // return false if the view scroll to the exact position as it is requested, 2700 // where negative numbers are taken to mean 0 2701 private boolean setContentScrollTo(int cx, int cy) { 2702 if (mDrawHistory) { 2703 // disallow WebView to change the scroll position as History Picture 2704 // is used in the view system. 2705 // One known case where this is called is that WebCore tries to 2706 // restore the scroll position. As history Picture already uses the 2707 // saved scroll position, it is ok to skip this. 2708 return false; 2709 } 2710 int vx; 2711 int vy; 2712 if ((cx | cy) == 0) { 2713 // If the page is being scrolled to (0,0), do not add in the title 2714 // bar's height, and simply scroll to (0,0). (The only other work 2715 // in contentToView_ is to multiply, so this would not change 0.) 2716 vx = 0; 2717 vy = 0; 2718 } else { 2719 vx = contentToViewX(cx); 2720 vy = contentToViewY(cy); 2721 } 2722// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2723// vx + " " + vy + "]"); 2724 // Some mobile sites attempt to scroll the title bar off the page by 2725 // scrolling to (0,1). If we are at the top left corner of the 2726 // page, assume this is an attempt to scroll off the title bar, and 2727 // animate the title bar off screen slowly enough that the user can see 2728 // it. 2729 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 2730 && mTitleBar != null) { 2731 // FIXME: 100 should be defined somewhere as our max progress. 2732 if (getProgress() < 100) { 2733 // Wait to scroll the title bar off screen until the page has 2734 // finished loading. Keep track of the URL and the destination 2735 // Y position 2736 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 2737 mYDistanceToSlideTitleOffScreen = vy; 2738 } else { 2739 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2740 } 2741 // Since we are animating, we have not yet reached the desired 2742 // scroll position. Do not return true to request another attempt 2743 return false; 2744 } 2745 pinScrollTo(vx, vy, false, 0); 2746 // If the request was to scroll to a negative coordinate, treat it as if 2747 // it was a request to scroll to 0 2748 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2749 return true; 2750 } else { 2751 return false; 2752 } 2753 } 2754 2755 // scale from content to view coordinates, and pin 2756 private void spawnContentScrollTo(int cx, int cy) { 2757 if (mDrawHistory) { 2758 // disallow WebView to change the scroll position as History Picture 2759 // is used in the view system. 2760 return; 2761 } 2762 int vx = contentToViewX(cx); 2763 int vy = contentToViewY(cy); 2764 pinScrollTo(vx, vy, true, 0); 2765 } 2766 2767 /** 2768 * These are from webkit, and are in content coordinate system (unzoomed) 2769 */ 2770 private void contentSizeChanged(boolean updateLayout) { 2771 // suppress 0,0 since we usually see real dimensions soon after 2772 // this avoids drawing the prev content in a funny place. If we find a 2773 // way to consolidate these notifications, this check may become 2774 // obsolete 2775 if ((mContentWidth | mContentHeight) == 0) { 2776 return; 2777 } 2778 2779 if (mHeightCanMeasure) { 2780 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2781 || updateLayout) { 2782 requestLayout(); 2783 } 2784 } else if (mWidthCanMeasure) { 2785 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2786 || updateLayout) { 2787 requestLayout(); 2788 } 2789 } else { 2790 // If we don't request a layout, try to send our view size to the 2791 // native side to ensure that WebCore has the correct dimensions. 2792 sendViewSizeZoom(); 2793 } 2794 } 2795 2796 /** 2797 * Set the WebViewClient that will receive various notifications and 2798 * requests. This will replace the current handler. 2799 * @param client An implementation of WebViewClient. 2800 */ 2801 public void setWebViewClient(WebViewClient client) { 2802 mCallbackProxy.setWebViewClient(client); 2803 } 2804 2805 /** 2806 * Gets the WebViewClient 2807 * @return the current WebViewClient instance. 2808 * 2809 *@hide pending API council approval. 2810 */ 2811 public WebViewClient getWebViewClient() { 2812 return mCallbackProxy.getWebViewClient(); 2813 } 2814 2815 /** 2816 * Register the interface to be used when content can not be handled by 2817 * the rendering engine, and should be downloaded instead. This will replace 2818 * the current handler. 2819 * @param listener An implementation of DownloadListener. 2820 */ 2821 public void setDownloadListener(DownloadListener listener) { 2822 mCallbackProxy.setDownloadListener(listener); 2823 } 2824 2825 /** 2826 * Set the chrome handler. This is an implementation of WebChromeClient for 2827 * use in handling Javascript dialogs, favicons, titles, and the progress. 2828 * This will replace the current handler. 2829 * @param client An implementation of WebChromeClient. 2830 */ 2831 public void setWebChromeClient(WebChromeClient client) { 2832 mCallbackProxy.setWebChromeClient(client); 2833 } 2834 2835 /** 2836 * Gets the chrome handler. 2837 * @return the current WebChromeClient instance. 2838 * 2839 * @hide API council approval. 2840 */ 2841 public WebChromeClient getWebChromeClient() { 2842 return mCallbackProxy.getWebChromeClient(); 2843 } 2844 2845 /** 2846 * Set the Picture listener. This is an interface used to receive 2847 * notifications of a new Picture. 2848 * @param listener An implementation of WebView.PictureListener. 2849 */ 2850 public void setPictureListener(PictureListener listener) { 2851 mPictureListener = listener; 2852 } 2853 2854 /** 2855 * {@hide} 2856 */ 2857 /* FIXME: Debug only! Remove for SDK! */ 2858 public void externalRepresentation(Message callback) { 2859 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2860 } 2861 2862 /** 2863 * {@hide} 2864 */ 2865 /* FIXME: Debug only! Remove for SDK! */ 2866 public void documentAsText(Message callback) { 2867 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2868 } 2869 2870 /** 2871 * Use this function to bind an object to Javascript so that the 2872 * methods can be accessed from Javascript. 2873 * <p><strong>IMPORTANT:</strong> 2874 * <ul> 2875 * <li> Using addJavascriptInterface() allows JavaScript to control your 2876 * application. This can be a very useful feature or a dangerous security 2877 * issue. When the HTML in the WebView is untrustworthy (for example, part 2878 * or all of the HTML is provided by some person or process), then an 2879 * attacker could inject HTML that will execute your code and possibly any 2880 * code of the attacker's choosing.<br> 2881 * Do not use addJavascriptInterface() unless all of the HTML in this 2882 * WebView was written by you.</li> 2883 * <li> The Java object that is bound runs in another thread and not in 2884 * the thread that it was constructed in.</li> 2885 * </ul></p> 2886 * @param obj The class instance to bind to Javascript 2887 * @param interfaceName The name to used to expose the class in Javascript 2888 */ 2889 public void addJavascriptInterface(Object obj, String interfaceName) { 2890 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2891 arg.mObject = obj; 2892 arg.mInterfaceName = interfaceName; 2893 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2894 } 2895 2896 /** 2897 * Return the WebSettings object used to control the settings for this 2898 * WebView. 2899 * @return A WebSettings object that can be used to control this WebView's 2900 * settings. 2901 */ 2902 public WebSettings getSettings() { 2903 return mWebViewCore.getSettings(); 2904 } 2905 2906 /** 2907 * Use this method to inform the webview about packages that are installed 2908 * in the system. This information will be used by the 2909 * navigator.isApplicationInstalled() API. 2910 * @param packageNames is a set of package names that are known to be 2911 * installed in the system. 2912 * 2913 * @hide not a public API 2914 */ 2915 public void addPackageNames(Set<String> packageNames) { 2916 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, packageNames); 2917 } 2918 2919 /** 2920 * Use this method to inform the webview about single packages that are 2921 * installed in the system. This information will be used by the 2922 * navigator.isApplicationInstalled() API. 2923 * @param packageName is the name of a package that is known to be 2924 * installed in the system. 2925 * 2926 * @hide not a public API 2927 */ 2928 public void addPackageName(String packageName) { 2929 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 2930 } 2931 2932 /** 2933 * Use this method to inform the webview about packages that are uninstalled 2934 * in the system. This information will be used by the 2935 * navigator.isApplicationInstalled() API. 2936 * @param packageName is the name of a package that has been uninstalled in 2937 * the system. 2938 * 2939 * @hide not a public API 2940 */ 2941 public void removePackageName(String packageName) { 2942 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 2943 } 2944 2945 /** 2946 * Return the list of currently loaded plugins. 2947 * @return The list of currently loaded plugins. 2948 * 2949 * @deprecated This was used for Gears, which has been deprecated. 2950 */ 2951 @Deprecated 2952 public static synchronized PluginList getPluginList() { 2953 return new PluginList(); 2954 } 2955 2956 /** 2957 * @deprecated This was used for Gears, which has been deprecated. 2958 */ 2959 @Deprecated 2960 public void refreshPlugins(boolean reloadOpenPages) { } 2961 2962 //------------------------------------------------------------------------- 2963 // Override View methods 2964 //------------------------------------------------------------------------- 2965 2966 @Override 2967 protected void finalize() throws Throwable { 2968 try { 2969 destroy(); 2970 } finally { 2971 super.finalize(); 2972 } 2973 } 2974 2975 @Override 2976 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 2977 if (child == mTitleBar) { 2978 // When drawing the title bar, move it horizontally to always show 2979 // at the top of the WebView. 2980 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 2981 } 2982 return super.drawChild(canvas, child, drawingTime); 2983 } 2984 2985 private void drawContent(Canvas canvas) { 2986 // Update the buttons in the picture, so when we draw the picture 2987 // to the screen, they are in the correct state. 2988 // Tell the native side if user is a) touching the screen, 2989 // b) pressing the trackball down, or c) pressing the enter key 2990 // If the cursor is on a button, we need to draw it in the pressed 2991 // state. 2992 // If mNativeClass is 0, we should not reach here, so we do not 2993 // need to check it again. 2994 nativeRecordButtons(hasFocus() && hasWindowFocus(), 2995 mTouchMode == TOUCH_SHORTPRESS_START_MODE 2996 || mTrackballDown || mGotCenterDown, false); 2997 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 2998 } 2999 3000 @Override 3001 protected void onDraw(Canvas canvas) { 3002 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3003 if (mNativeClass == 0) { 3004 return; 3005 } 3006 3007 int saveCount = canvas.save(); 3008 if (mTitleBar != null) { 3009 canvas.translate(0, (int) mTitleBar.getHeight()); 3010 } 3011 if (mDragTrackerHandler == null) { 3012 drawContent(canvas); 3013 } else { 3014 if (!mDragTrackerHandler.draw(canvas)) { 3015 // sometimes the tracker doesn't draw, even though its active 3016 drawContent(canvas); 3017 } 3018 if (mDragTrackerHandler.isFinished()) { 3019 mDragTrackerHandler = null; 3020 } 3021 } 3022 canvas.restoreToCount(saveCount); 3023 3024 // Now draw the shadow. 3025 if (mTitleBar != null) { 3026 int y = mScrollY + getVisibleTitleHeight(); 3027 int height = (int) (5f * getContext().getResources() 3028 .getDisplayMetrics().density); 3029 mTitleShadow.setBounds(mScrollX, y, mScrollX + getWidth(), 3030 y + height); 3031 mTitleShadow.draw(canvas); 3032 } 3033 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3034 invalidate(); 3035 } 3036 mWebViewCore.signalRepaintDone(); 3037 } 3038 3039 @Override 3040 public void setLayoutParams(ViewGroup.LayoutParams params) { 3041 if (params.height == LayoutParams.WRAP_CONTENT) { 3042 mWrapContent = true; 3043 } 3044 super.setLayoutParams(params); 3045 } 3046 3047 @Override 3048 public boolean performLongClick() { 3049 // performLongClick() is the result of a delayed message. If we switch 3050 // to windows overview, the WebView will be temporarily removed from the 3051 // view system. In that case, do nothing. 3052 if (getParent() == null) return false; 3053 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3054 // Send the click so that the textfield is in focus 3055 centerKeyPressOnTextField(); 3056 rebuildWebTextView(); 3057 } 3058 if (inEditingMode()) { 3059 return mWebTextView.performLongClick(); 3060 } else { 3061 return super.performLongClick(); 3062 } 3063 } 3064 3065 boolean inAnimateZoom() { 3066 return mZoomScale != 0; 3067 } 3068 3069 /** 3070 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3071 * has changed. This is especially important for password fields, which are 3072 * drawn by the WebTextView, since it conveys more information than what 3073 * webkit draws. Thus we need to reposition it to show in the correct 3074 * place. 3075 */ 3076 private boolean mNeedToAdjustWebTextView; 3077 3078 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3079 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3080 Rect vBox = contentToViewRect(contentBounds); 3081 Rect visibleRect = new Rect(); 3082 calcOurVisibleRect(visibleRect); 3083 // The IME may have shown, resulting in the textfield being offscreen. 3084 // If so, the textfield will be scrolled on screen, so treat it as 3085 // though it is on screen. If it is on screen, place the WebTextView in 3086 // its new place, accounting for our new scroll/zoom values. 3087 InputMethodManager imm = InputMethodManager.peekInstance(); 3088 if ((imm != null && imm.isActive(mWebTextView)) 3089 || (allowIntersect ? Rect.intersects(visibleRect, vBox) 3090 : visibleRect.contains(vBox))) { 3091 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3092 vBox.height()); 3093 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3094 contentToViewDimension( 3095 nativeFocusCandidateTextSize())); 3096 return true; 3097 } else { 3098 // The textfield is now off screen. The user probably 3099 // was not zooming to see the textfield better. Remove 3100 // the WebTextView. If the user types a key, and the 3101 // textfield is still in focus, we will reconstruct 3102 // the WebTextView and scroll it back on screen. 3103 mWebTextView.remove(); 3104 return false; 3105 } 3106 } 3107 3108 private void drawLayers(Canvas canvas) { 3109 if (mRootLayer != 0) { 3110 int scrollY = computeVerticalScrollOffset(); 3111 int viewHeight = getHeight() - getVisibleTitleHeight(); 3112 3113 // Currently for each draw we compute the animation values; 3114 // We may in the future decide to do that independently. 3115 if (nativeEvaluateLayersAnimations(mRootLayer)) { 3116 // If we have unfinished (or unstarted) animations, 3117 // we ask for a repaint. 3118 invalidate(); 3119 } 3120 3121 // We can now draw the layers. 3122 nativeDrawLayers(mRootLayer, mScrollX, scrollY, 3123 getWidth(), viewHeight, 3124 mActualScale, canvas); 3125 } 3126 } 3127 3128 private void drawCoreAndCursorRing(Canvas canvas, int color, 3129 boolean drawCursorRing) { 3130 if (mDrawHistory) { 3131 canvas.scale(mActualScale, mActualScale); 3132 canvas.drawPicture(mHistoryPicture); 3133 drawLayers(canvas); 3134 return; 3135 } 3136 3137 boolean animateZoom = mZoomScale != 0; 3138 boolean animateScroll = (!mScroller.isFinished() 3139 || mVelocityTracker != null) 3140 && (mTouchMode != TOUCH_DRAG_MODE || 3141 mHeldMotionless != MOTIONLESS_TRUE); 3142 if (mTouchMode == TOUCH_DRAG_MODE) { 3143 if (mHeldMotionless == MOTIONLESS_PENDING) { 3144 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3145 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3146 mHeldMotionless = MOTIONLESS_FALSE; 3147 } 3148 if (mHeldMotionless == MOTIONLESS_FALSE) { 3149 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3150 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3151 mHeldMotionless = MOTIONLESS_PENDING; 3152 } 3153 } 3154 if (animateZoom) { 3155 float zoomScale; 3156 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 3157 if (interval < ZOOM_ANIMATION_LENGTH) { 3158 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 3159 zoomScale = 1.0f / (mInvInitialZoomScale 3160 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 3161 invalidate(); 3162 } else { 3163 zoomScale = mZoomScale; 3164 // set mZoomScale to be 0 as we have done animation 3165 mZoomScale = 0; 3166 WebViewCore.resumeUpdatePicture(mWebViewCore); 3167 // call invalidate() again to draw with the final filters 3168 invalidate(); 3169 if (mNeedToAdjustWebTextView) { 3170 mNeedToAdjustWebTextView = false; 3171 if (didUpdateTextViewBounds(false) 3172 && nativeFocusCandidateIsPassword()) { 3173 // If it is a password field, start drawing the 3174 // WebTextView once again. 3175 mWebTextView.setInPassword(true); 3176 } 3177 } 3178 } 3179 // calculate the intermediate scroll position. As we need to use 3180 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 3181 float scale = zoomScale * mInvInitialZoomScale; 3182 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 3183 - mZoomCenterX); 3184 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 3185 * zoomScale)) + mScrollX; 3186 int titleHeight = getTitleHeight(); 3187 int ty = Math.round(scale 3188 * (mInitialScrollY + mZoomCenterY - titleHeight) 3189 - (mZoomCenterY - titleHeight)); 3190 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 3191 - titleHeight, getViewHeight(), Math.round(mContentHeight 3192 * zoomScale)) + titleHeight) + mScrollY; 3193 canvas.translate(tx, ty); 3194 canvas.scale(zoomScale, zoomScale); 3195 if (inEditingMode() && !mNeedToAdjustWebTextView 3196 && mZoomScale != 0) { 3197 // The WebTextView is up. Keep track of this so we can adjust 3198 // its size and placement when we finish zooming 3199 mNeedToAdjustWebTextView = true; 3200 // If it is in password mode, turn it off so it does not draw 3201 // misplaced. 3202 if (nativeFocusCandidateIsPassword()) { 3203 mWebTextView.setInPassword(false); 3204 } 3205 } 3206 } else { 3207 canvas.scale(mActualScale, mActualScale); 3208 } 3209 3210 mWebViewCore.drawContentPicture(canvas, color, 3211 (animateZoom || mPreviewZoomOnly), animateScroll); 3212 3213 drawLayers(canvas); 3214 3215 if (mNativeClass == 0) return; 3216 if (mShiftIsPressed && !(animateZoom || mPreviewZoomOnly)) { 3217 if (mTouchSelection || mExtendSelection) { 3218 nativeDrawSelectionRegion(canvas); 3219 } 3220 if (!mTouchSelection) { 3221 nativeDrawSelectionPointer(canvas, mInvActualScale, mSelectX, 3222 mSelectY - getTitleHeight(), mExtendSelection); 3223 } 3224 } else if (drawCursorRing) { 3225 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3226 mTouchMode = TOUCH_SHORTPRESS_MODE; 3227 HitTestResult hitTest = getHitTestResult(); 3228 if (mPreventLongPress || (hitTest != null && 3229 hitTest.mType != HitTestResult.UNKNOWN_TYPE)) { 3230 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3231 .obtainMessage(SWITCH_TO_LONGPRESS), 3232 LONG_PRESS_TIMEOUT); 3233 } 3234 } 3235 nativeDrawCursorRing(canvas); 3236 } 3237 // When the FindDialog is up, only draw the matches if we are not in 3238 // the process of scrolling them into view. 3239 if (mFindIsUp && !animateScroll) { 3240 nativeDrawMatches(canvas); 3241 } 3242 if (mFocusSizeChanged) { 3243 mFocusSizeChanged = false; 3244 // If we are zooming, this will get handled above, when the zoom 3245 // finishes. We also do not need to do this unless the WebTextView 3246 // is showing. 3247 if (!animateZoom && inEditingMode()) { 3248 didUpdateTextViewBounds(true); 3249 } 3250 } 3251 } 3252 3253 // draw history 3254 private boolean mDrawHistory = false; 3255 private Picture mHistoryPicture = null; 3256 private int mHistoryWidth = 0; 3257 private int mHistoryHeight = 0; 3258 3259 // Only check the flag, can be called from WebCore thread 3260 boolean drawHistory() { 3261 return mDrawHistory; 3262 } 3263 3264 // Should only be called in UI thread 3265 void switchOutDrawHistory() { 3266 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3267 if (mDrawHistory && mWebViewCore.pictureReady()) { 3268 mDrawHistory = false; 3269 invalidate(); 3270 int oldScrollX = mScrollX; 3271 int oldScrollY = mScrollY; 3272 mScrollX = pinLocX(mScrollX); 3273 mScrollY = pinLocY(mScrollY); 3274 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3275 mUserScroll = false; 3276 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3277 oldScrollY); 3278 } 3279 sendOurVisibleRect(); 3280 } 3281 } 3282 3283 WebViewCore.CursorData cursorData() { 3284 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3285 result.mMoveGeneration = nativeMoveGeneration(); 3286 result.mFrame = nativeCursorFramePointer(); 3287 Point position = nativeCursorPosition(); 3288 result.mX = position.x; 3289 result.mY = position.y; 3290 return result; 3291 } 3292 3293 /** 3294 * Delete text from start to end in the focused textfield. If there is no 3295 * focus, or if start == end, silently fail. If start and end are out of 3296 * order, swap them. 3297 * @param start Beginning of selection to delete. 3298 * @param end End of selection to delete. 3299 */ 3300 /* package */ void deleteSelection(int start, int end) { 3301 mTextGeneration++; 3302 WebViewCore.TextSelectionData data 3303 = new WebViewCore.TextSelectionData(start, end); 3304 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3305 data); 3306 } 3307 3308 /** 3309 * Set the selection to (start, end) in the focused textfield. If start and 3310 * end are out of order, swap them. 3311 * @param start Beginning of selection. 3312 * @param end End of selection. 3313 */ 3314 /* package */ void setSelection(int start, int end) { 3315 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3316 } 3317 3318 @Override 3319 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3320 InputConnection connection = super.onCreateInputConnection(outAttrs); 3321 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3322 return connection; 3323 } 3324 3325 /** 3326 * Called in response to a message from webkit telling us that the soft 3327 * keyboard should be launched. 3328 */ 3329 private void displaySoftKeyboard(boolean isTextView) { 3330 InputMethodManager imm = (InputMethodManager) 3331 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3332 3333 if (isTextView) { 3334 rebuildWebTextView(); 3335 if (!inEditingMode()) return; 3336 imm.showSoftInput(mWebTextView, 0); 3337 // bring it back to the default scale so that user can enter text 3338 if (mActualScale < mDefaultScale) { 3339 mInZoomOverview = false; 3340 mZoomCenterX = mLastTouchX; 3341 mZoomCenterY = mLastTouchY; 3342 // do not change text wrap scale so that there is no reflow 3343 setNewZoomScale(mDefaultScale, false, false); 3344 didUpdateTextViewBounds(true); 3345 } 3346 } 3347 else { // used by plugins 3348 imm.showSoftInput(this, 0); 3349 } 3350 } 3351 3352 // Called by WebKit to instruct the UI to hide the keyboard 3353 private void hideSoftKeyboard() { 3354 InputMethodManager imm = (InputMethodManager) 3355 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3356 3357 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3358 } 3359 3360 /* 3361 * This method checks the current focus and cursor and potentially rebuilds 3362 * mWebTextView to have the appropriate properties, such as password, 3363 * multiline, and what text it contains. It also removes it if necessary. 3364 */ 3365 /* package */ void rebuildWebTextView() { 3366 // If the WebView does not have focus, do nothing until it gains focus. 3367 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3368 return; 3369 } 3370 boolean alreadyThere = inEditingMode(); 3371 // inEditingMode can only return true if mWebTextView is non-null, 3372 // so we can safely call remove() if (alreadyThere) 3373 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3374 if (alreadyThere) { 3375 mWebTextView.remove(); 3376 } 3377 return; 3378 } 3379 // At this point, we know we have found an input field, so go ahead 3380 // and create the WebTextView if necessary. 3381 if (mWebTextView == null) { 3382 mWebTextView = new WebTextView(mContext, WebView.this); 3383 // Initialize our generation number. 3384 mTextGeneration = 0; 3385 } 3386 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3387 contentToViewDimension(nativeFocusCandidateTextSize())); 3388 Rect visibleRect = new Rect(); 3389 calcOurContentVisibleRect(visibleRect); 3390 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3391 // should be in content coordinates. 3392 Rect bounds = nativeFocusCandidateNodeBounds(); 3393 Rect vBox = contentToViewRect(bounds); 3394 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3395 if (!Rect.intersects(bounds, visibleRect)) { 3396 mWebTextView.bringIntoView(); 3397 } 3398 String text = nativeFocusCandidateText(); 3399 int nodePointer = nativeFocusCandidatePointer(); 3400 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3401 // It is possible that we have the same textfield, but it has moved, 3402 // i.e. In the case of opening/closing the screen. 3403 // In that case, we need to set the dimensions, but not the other 3404 // aspects. 3405 // If the text has been changed by webkit, update it. However, if 3406 // there has been more UI text input, ignore it. We will receive 3407 // another update when that text is recognized. 3408 if (text != null && !text.equals(mWebTextView.getText().toString()) 3409 && nativeTextGeneration() == mTextGeneration) { 3410 mWebTextView.setTextAndKeepSelection(text); 3411 } 3412 } else { 3413 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3414 Gravity.RIGHT : Gravity.NO_GRAVITY); 3415 // This needs to be called before setType, which may call 3416 // requestFormData, and it needs to have the correct nodePointer. 3417 mWebTextView.setNodePointer(nodePointer); 3418 mWebTextView.setType(nativeFocusCandidateType()); 3419 if (null == text) { 3420 if (DebugFlags.WEB_VIEW) { 3421 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3422 } 3423 text = ""; 3424 } 3425 mWebTextView.setTextAndKeepSelection(text); 3426 InputMethodManager imm = InputMethodManager.peekInstance(); 3427 if (imm != null && imm.isActive(mWebTextView)) { 3428 imm.restartInput(mWebTextView); 3429 } 3430 } 3431 mWebTextView.requestFocus(); 3432 } 3433 3434 /** 3435 * Called by WebTextView to find saved form data associated with the 3436 * textfield 3437 * @param name Name of the textfield. 3438 * @param nodePointer Pointer to the node of the textfield, so it can be 3439 * compared to the currently focused textfield when the data is 3440 * retrieved. 3441 */ 3442 /* package */ void requestFormData(String name, int nodePointer) { 3443 if (mWebViewCore.getSettings().getSaveFormData()) { 3444 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3445 update.arg1 = nodePointer; 3446 RequestFormData updater = new RequestFormData(name, getUrl(), 3447 update); 3448 Thread t = new Thread(updater); 3449 t.start(); 3450 } 3451 } 3452 3453 /** 3454 * Pass a message to find out the <label> associated with the <input> 3455 * identified by nodePointer 3456 * @param framePointer Pointer to the frame containing the <input> node 3457 * @param nodePointer Pointer to the node for which a <label> is desired. 3458 */ 3459 /* package */ void requestLabel(int framePointer, int nodePointer) { 3460 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3461 nodePointer); 3462 } 3463 3464 /* 3465 * This class requests an Adapter for the WebTextView which shows past 3466 * entries stored in the database. It is a Runnable so that it can be done 3467 * in its own thread, without slowing down the UI. 3468 */ 3469 private class RequestFormData implements Runnable { 3470 private String mName; 3471 private String mUrl; 3472 private Message mUpdateMessage; 3473 3474 public RequestFormData(String name, String url, Message msg) { 3475 mName = name; 3476 mUrl = url; 3477 mUpdateMessage = msg; 3478 } 3479 3480 public void run() { 3481 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3482 if (pastEntries.size() > 0) { 3483 AutoCompleteAdapter adapter = new 3484 AutoCompleteAdapter(mContext, pastEntries); 3485 mUpdateMessage.obj = adapter; 3486 mUpdateMessage.sendToTarget(); 3487 } 3488 } 3489 } 3490 3491 /** 3492 * Dump the display tree to "/sdcard/displayTree.txt" 3493 * 3494 * @hide debug only 3495 */ 3496 public void dumpDisplayTree() { 3497 nativeDumpDisplayTree(getUrl()); 3498 } 3499 3500 /** 3501 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 3502 * "/sdcard/domTree.txt" 3503 * 3504 * @hide debug only 3505 */ 3506 public void dumpDomTree(boolean toFile) { 3507 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 3508 } 3509 3510 /** 3511 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 3512 * to "/sdcard/renderTree.txt" 3513 * 3514 * @hide debug only 3515 */ 3516 public void dumpRenderTree(boolean toFile) { 3517 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 3518 } 3519 3520 /** 3521 * Dump the V8 counters to standard output. 3522 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 3523 * true. Otherwise, this will do nothing. 3524 * 3525 * @hide debug only 3526 */ 3527 public void dumpV8Counters() { 3528 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 3529 } 3530 3531 // This is used to determine long press with the center key. Does not 3532 // affect long press with the trackball/touch. 3533 private boolean mGotCenterDown = false; 3534 3535 @Override 3536 public boolean onKeyDown(int keyCode, KeyEvent event) { 3537 if (DebugFlags.WEB_VIEW) { 3538 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3539 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3540 } 3541 3542 if (mNativeClass == 0) { 3543 return false; 3544 } 3545 3546 // do this hack up front, so it always works, regardless of touch-mode 3547 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3548 mAutoRedraw = !mAutoRedraw; 3549 if (mAutoRedraw) { 3550 invalidate(); 3551 } 3552 return true; 3553 } 3554 3555 // Bubble up the key event if 3556 // 1. it is a system key; or 3557 // 2. the host application wants to handle it; 3558 if (event.isSystem() 3559 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3560 return false; 3561 } 3562 3563 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3564 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3565 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3566 setUpSelectXY(); 3567 } 3568 3569 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3570 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3571 // always handle the navigation keys in the UI thread 3572 switchOutDrawHistory(); 3573 if (mShiftIsPressed) { 3574 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 3575 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 3576 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 3577 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 3578 int multiplier = event.getRepeatCount() + 1; 3579 moveSelection(xRate * multiplier, yRate * multiplier); 3580 return true; 3581 } 3582 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3583 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3584 return true; 3585 } 3586 // Bubble up the key event as WebView doesn't handle it 3587 return false; 3588 } 3589 3590 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3591 switchOutDrawHistory(); 3592 if (event.getRepeatCount() == 0) { 3593 if (mShiftIsPressed) { 3594 return true; // discard press if copy in progress 3595 } 3596 mGotCenterDown = true; 3597 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3598 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3599 // Already checked mNativeClass, so we do not need to check it 3600 // again. 3601 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3602 return true; 3603 } 3604 // Bubble up the key event as WebView doesn't handle it 3605 return false; 3606 } 3607 3608 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3609 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3610 // turn off copy select if a shift-key combo is pressed 3611 mExtendSelection = mShiftIsPressed = false; 3612 if (mTouchMode == TOUCH_SELECT_MODE) { 3613 mTouchMode = TOUCH_INIT_MODE; 3614 } 3615 } 3616 3617 if (getSettings().getNavDump()) { 3618 switch (keyCode) { 3619 case KeyEvent.KEYCODE_4: 3620 dumpDisplayTree(); 3621 break; 3622 case KeyEvent.KEYCODE_5: 3623 case KeyEvent.KEYCODE_6: 3624 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 3625 break; 3626 case KeyEvent.KEYCODE_7: 3627 case KeyEvent.KEYCODE_8: 3628 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 3629 break; 3630 case KeyEvent.KEYCODE_9: 3631 nativeInstrumentReport(); 3632 return true; 3633 } 3634 } 3635 3636 if (nativeCursorIsTextInput()) { 3637 // This message will put the node in focus, for the DOM's notion 3638 // of focus, and make the focuscontroller active 3639 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3640 nativeCursorNodePointer()); 3641 // This will bring up the WebTextView and put it in focus, for 3642 // our view system's notion of focus 3643 rebuildWebTextView(); 3644 // Now we need to pass the event to it 3645 if (inEditingMode()) { 3646 mWebTextView.setDefaultSelection(); 3647 return mWebTextView.dispatchKeyEvent(event); 3648 } 3649 } else if (nativeHasFocusNode()) { 3650 // In this case, the cursor is not on a text input, but the focus 3651 // might be. Check it, and if so, hand over to the WebTextView. 3652 rebuildWebTextView(); 3653 if (inEditingMode()) { 3654 return mWebTextView.dispatchKeyEvent(event); 3655 } 3656 } 3657 3658 // TODO: should we pass all the keys to DOM or check the meta tag 3659 if (nativeCursorWantsKeyEvents() || true) { 3660 // pass the key to DOM 3661 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3662 // return true as DOM handles the key 3663 return true; 3664 } 3665 3666 // Bubble up the key event as WebView doesn't handle it 3667 return false; 3668 } 3669 3670 @Override 3671 public boolean onKeyUp(int keyCode, KeyEvent event) { 3672 if (DebugFlags.WEB_VIEW) { 3673 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3674 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3675 } 3676 3677 if (mNativeClass == 0) { 3678 return false; 3679 } 3680 3681 // special CALL handling when cursor node's href is "tel:XXX" 3682 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3683 String text = nativeCursorText(); 3684 if (!nativeCursorIsTextInput() && text != null 3685 && text.startsWith(SCHEME_TEL)) { 3686 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3687 getContext().startActivity(intent); 3688 return true; 3689 } 3690 } 3691 3692 // Bubble up the key event if 3693 // 1. it is a system key; or 3694 // 2. the host application wants to handle it; 3695 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3696 return false; 3697 } 3698 3699 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3700 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3701 if (commitCopy()) { 3702 return true; 3703 } 3704 } 3705 3706 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3707 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3708 // always handle the navigation keys in the UI thread 3709 // Bubble up the key event as WebView doesn't handle it 3710 return false; 3711 } 3712 3713 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3714 // remove the long press message first 3715 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3716 mGotCenterDown = false; 3717 3718 if (mShiftIsPressed) { 3719 if (mExtendSelection) { 3720 commitCopy(); 3721 } else { 3722 mExtendSelection = true; 3723 invalidate(); // draw the i-beam instead of the arrow 3724 } 3725 return true; // discard press if copy in progress 3726 } 3727 3728 // perform the single click 3729 Rect visibleRect = sendOurVisibleRect(); 3730 // Note that sendOurVisibleRect calls viewToContent, so the 3731 // coordinates should be in content coordinates. 3732 if (!nativeCursorIntersects(visibleRect)) { 3733 return false; 3734 } 3735 WebViewCore.CursorData data = cursorData(); 3736 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3737 playSoundEffect(SoundEffectConstants.CLICK); 3738 if (nativeCursorIsTextInput()) { 3739 rebuildWebTextView(); 3740 centerKeyPressOnTextField(); 3741 if (inEditingMode()) { 3742 mWebTextView.setDefaultSelection(); 3743 } 3744 return true; 3745 } 3746 nativeSetFollowedLink(true); 3747 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 3748 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3749 nativeCursorNodePointer()); 3750 } 3751 return true; 3752 } 3753 3754 // TODO: should we pass all the keys to DOM or check the meta tag 3755 if (nativeCursorWantsKeyEvents() || true) { 3756 // pass the key to DOM 3757 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3758 // return true as DOM handles the key 3759 return true; 3760 } 3761 3762 // Bubble up the key event as WebView doesn't handle it 3763 return false; 3764 } 3765 3766 private void setUpSelectXY() { 3767 mExtendSelection = false; 3768 mShiftIsPressed = true; 3769 if (nativeHasCursorNode()) { 3770 Rect rect = nativeCursorNodeBounds(); 3771 mSelectX = contentToViewX(rect.left); 3772 mSelectY = contentToViewY(rect.top); 3773 } else if (mLastTouchY > getVisibleTitleHeight()) { 3774 mSelectX = mScrollX + (int) mLastTouchX; 3775 mSelectY = mScrollY + (int) mLastTouchY; 3776 } else { 3777 mSelectX = mScrollX + getViewWidth() / 2; 3778 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 3779 } 3780 nativeHideCursor(); 3781 } 3782 3783 public void emulateShiftHeld() { 3784 if (0 == mNativeClass) return; // client isn't initialized 3785 setUpSelectXY(); 3786 } 3787 3788 private boolean commitCopy() { 3789 boolean copiedSomething = false; 3790 if (mExtendSelection) { 3791 String selection = nativeGetSelection(); 3792 if (selection != "") { 3793 if (DebugFlags.WEB_VIEW) { 3794 Log.v(LOGTAG, "commitCopy \"" + selection + "\""); 3795 } 3796 Toast.makeText(mContext 3797 , com.android.internal.R.string.text_copied 3798 , Toast.LENGTH_SHORT).show(); 3799 copiedSomething = true; 3800 try { 3801 IClipboard clip = IClipboard.Stub.asInterface( 3802 ServiceManager.getService("clipboard")); 3803 clip.setClipboardText(selection); 3804 } catch (android.os.RemoteException e) { 3805 Log.e(LOGTAG, "Clipboard failed", e); 3806 } 3807 } 3808 mExtendSelection = false; 3809 } 3810 mShiftIsPressed = false; 3811 invalidate(); // remove selection region and pointer 3812 if (mTouchMode == TOUCH_SELECT_MODE) { 3813 mTouchMode = TOUCH_INIT_MODE; 3814 } 3815 return copiedSomething; 3816 } 3817 3818 @Override 3819 protected void onAttachedToWindow() { 3820 super.onAttachedToWindow(); 3821 if (hasWindowFocus()) onWindowFocusChanged(true); 3822 } 3823 3824 @Override 3825 protected void onDetachedFromWindow() { 3826 clearTextEntry(); 3827 super.onDetachedFromWindow(); 3828 // Clean up the zoom controller 3829 mZoomButtonsController.setVisible(false); 3830 } 3831 3832 /** 3833 * @deprecated WebView no longer needs to implement 3834 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3835 */ 3836 @Deprecated 3837 public void onChildViewAdded(View parent, View child) {} 3838 3839 /** 3840 * @deprecated WebView no longer needs to implement 3841 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3842 */ 3843 @Deprecated 3844 public void onChildViewRemoved(View p, View child) {} 3845 3846 /** 3847 * @deprecated WebView should not have implemented 3848 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3849 * does nothing now. 3850 */ 3851 @Deprecated 3852 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3853 } 3854 3855 // To avoid drawing the cursor ring, and remove the TextView when our window 3856 // loses focus. 3857 @Override 3858 public void onWindowFocusChanged(boolean hasWindowFocus) { 3859 if (hasWindowFocus) { 3860 if (hasFocus()) { 3861 // If our window regained focus, and we have focus, then begin 3862 // drawing the cursor ring 3863 mDrawCursorRing = true; 3864 if (mNativeClass != 0) { 3865 nativeRecordButtons(true, false, true); 3866 if (inEditingMode()) { 3867 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3868 } 3869 } 3870 } else { 3871 // If our window gained focus, but we do not have it, do not 3872 // draw the cursor ring. 3873 mDrawCursorRing = false; 3874 // We do not call nativeRecordButtons here because we assume 3875 // that when we lost focus, or window focus, it got called with 3876 // false for the first parameter 3877 } 3878 } else { 3879 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3880 /* 3881 * The zoom controls come in their own window, so our window 3882 * loses focus. Our policy is to not draw the cursor ring if 3883 * our window is not focused, but this is an exception since 3884 * the user can still navigate the web page with the zoom 3885 * controls showing. 3886 */ 3887 // If our window has lost focus, stop drawing the cursor ring 3888 mDrawCursorRing = false; 3889 } 3890 mGotKeyDown = false; 3891 mShiftIsPressed = false; 3892 if (mNativeClass != 0) { 3893 nativeRecordButtons(false, false, true); 3894 } 3895 setFocusControllerInactive(); 3896 } 3897 invalidate(); 3898 super.onWindowFocusChanged(hasWindowFocus); 3899 } 3900 3901 /* 3902 * Pass a message to WebCore Thread, telling the WebCore::Page's 3903 * FocusController to be "inactive" so that it will 3904 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3905 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3906 */ 3907 /* package */ void setFocusControllerInactive() { 3908 // Do not need to also check whether mWebViewCore is null, because 3909 // mNativeClass is only set if mWebViewCore is non null 3910 if (mNativeClass == 0) return; 3911 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 3912 } 3913 3914 @Override 3915 protected void onFocusChanged(boolean focused, int direction, 3916 Rect previouslyFocusedRect) { 3917 if (DebugFlags.WEB_VIEW) { 3918 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3919 } 3920 if (focused) { 3921 // When we regain focus, if we have window focus, resume drawing 3922 // the cursor ring 3923 if (hasWindowFocus()) { 3924 mDrawCursorRing = true; 3925 if (mNativeClass != 0) { 3926 nativeRecordButtons(true, false, true); 3927 } 3928 //} else { 3929 // The WebView has gained focus while we do not have 3930 // windowfocus. When our window lost focus, we should have 3931 // called nativeRecordButtons(false...) 3932 } 3933 } else { 3934 // When we lost focus, unless focus went to the TextView (which is 3935 // true if we are in editing mode), stop drawing the cursor ring. 3936 if (!inEditingMode()) { 3937 mDrawCursorRing = false; 3938 if (mNativeClass != 0) { 3939 nativeRecordButtons(false, false, true); 3940 } 3941 setFocusControllerInactive(); 3942 } 3943 mGotKeyDown = false; 3944 } 3945 3946 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3947 } 3948 3949 /** 3950 * @hide 3951 */ 3952 @Override 3953 protected boolean setFrame(int left, int top, int right, int bottom) { 3954 boolean changed = super.setFrame(left, top, right, bottom); 3955 if (!changed && mHeightCanMeasure) { 3956 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 3957 // in WebViewCore after we get the first layout. We do call 3958 // requestLayout() when we get contentSizeChanged(). But the View 3959 // system won't call onSizeChanged if the dimension is not changed. 3960 // In this case, we need to call sendViewSizeZoom() explicitly to 3961 // notify the WebKit about the new dimensions. 3962 sendViewSizeZoom(); 3963 } 3964 return changed; 3965 } 3966 3967 private static class PostScale implements Runnable { 3968 final WebView mWebView; 3969 final boolean mUpdateTextWrap; 3970 3971 public PostScale(WebView webView, boolean updateTextWrap) { 3972 mWebView = webView; 3973 mUpdateTextWrap = updateTextWrap; 3974 } 3975 3976 public void run() { 3977 if (mWebView.mWebViewCore != null) { 3978 // we always force, in case our height changed, in which case we 3979 // still want to send the notification over to webkit. 3980 mWebView.setNewZoomScale(mWebView.mActualScale, 3981 mUpdateTextWrap, true); 3982 } 3983 } 3984 } 3985 3986 @Override 3987 protected void onSizeChanged(int w, int h, int ow, int oh) { 3988 super.onSizeChanged(w, h, ow, oh); 3989 // Center zooming to the center of the screen. 3990 if (mZoomScale == 0) { // unless we're already zooming 3991 // To anchor at top left corner. 3992 mZoomCenterX = 0; 3993 mZoomCenterY = getVisibleTitleHeight(); 3994 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 3995 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 3996 } 3997 3998 // adjust the max viewport width depending on the view dimensions. This 3999 // is to ensure the scaling is not going insane. So do not shrink it if 4000 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4001 int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE); 4002 if (newMaxViewportWidth > sMaxViewportWidth) { 4003 sMaxViewportWidth = newMaxViewportWidth; 4004 } 4005 4006 // update mMinZoomScale if the minimum zoom scale is not fixed 4007 if (!mMinZoomScaleFixed) { 4008 // when change from narrow screen to wide screen, the new viewWidth 4009 // can be wider than the old content width. We limit the minimum 4010 // scale to 1.0f. The proper minimum scale will be calculated when 4011 // the new picture shows up. 4012 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 4013 / (mDrawHistory ? mHistoryPicture.getWidth() 4014 : mZoomOverviewWidth)); 4015 if (mInitialScaleInPercent > 0) { 4016 // limit the minZoomScale to the initialScale if it is set 4017 float initialScale = mInitialScaleInPercent / 100.0f; 4018 if (mMinZoomScale > initialScale) { 4019 mMinZoomScale = initialScale; 4020 } 4021 } 4022 } 4023 4024 // onSizeChanged() is called during WebView layout. And any 4025 // requestLayout() is blocked during layout. As setNewZoomScale() will 4026 // call its child View to reposition itself through ViewManager's 4027 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 4028 // <b/> 4029 // only update the text wrap scale if width changed. 4030 post(new PostScale(this, w != ow)); 4031 } 4032 4033 @Override 4034 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4035 super.onScrollChanged(l, t, oldl, oldt); 4036 sendOurVisibleRect(); 4037 } 4038 4039 4040 @Override 4041 public boolean dispatchKeyEvent(KeyEvent event) { 4042 boolean dispatch = true; 4043 4044 if (!inEditingMode()) { 4045 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4046 mGotKeyDown = true; 4047 } else { 4048 if (!mGotKeyDown) { 4049 /* 4050 * We got a key up for which we were not the recipient of 4051 * the original key down. Don't give it to the view. 4052 */ 4053 dispatch = false; 4054 } 4055 mGotKeyDown = false; 4056 } 4057 } 4058 4059 if (dispatch) { 4060 return super.dispatchKeyEvent(event); 4061 } else { 4062 // We didn't dispatch, so let something else handle the key 4063 return false; 4064 } 4065 } 4066 4067 // Here are the snap align logic: 4068 // 1. If it starts nearly horizontally or vertically, snap align; 4069 // 2. If there is a dramitic direction change, let it go; 4070 // 3. If there is a same direction back and forth, lock it. 4071 4072 // adjustable parameters 4073 private int mMinLockSnapReverseDistance; 4074 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4075 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4076 4077 private static int sign(float x) { 4078 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4079 } 4080 4081 // if the page can scroll <= this value, we won't allow the drag tracker 4082 // to have any effect. 4083 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4084 4085 private class DragTrackerHandler { 4086 private final DragTracker mProxy; 4087 private final float mStartY, mStartX; 4088 private final float mMinDY, mMinDX; 4089 private final float mMaxDY, mMaxDX; 4090 private float mCurrStretchY, mCurrStretchX; 4091 private int mSX, mSY; 4092 private Interpolator mInterp; 4093 private float[] mXY = new float[2]; 4094 4095 // inner (non-state) classes can't have enums :( 4096 private static final int DRAGGING_STATE = 0; 4097 private static final int ANIMATING_STATE = 1; 4098 private static final int FINISHED_STATE = 2; 4099 private int mState; 4100 4101 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4102 mProxy = proxy; 4103 4104 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4105 int viewTop = getScrollY(); 4106 int viewBottom = viewTop + getHeight(); 4107 4108 mStartY = y; 4109 mMinDY = -viewTop; 4110 mMaxDY = docBottom - viewBottom; 4111 4112 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4113 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4114 " up/down= " + mMinDY + " " + mMaxDY); 4115 } 4116 4117 int docRight = computeHorizontalScrollRange(); 4118 int viewLeft = getScrollX(); 4119 int viewRight = viewLeft + getWidth(); 4120 mStartX = x; 4121 mMinDX = -viewLeft; 4122 mMaxDX = docRight - viewRight; 4123 4124 mState = DRAGGING_STATE; 4125 mProxy.onStartDrag(x, y); 4126 4127 // ensure we buildBitmap at least once 4128 mSX = -99999; 4129 } 4130 4131 private float computeStretch(float delta, float min, float max) { 4132 float stretch = 0; 4133 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4134 if (delta < min) { 4135 stretch = delta - min; 4136 } else if (delta > max) { 4137 stretch = delta - max; 4138 } 4139 } 4140 return stretch; 4141 } 4142 4143 public void dragTo(float x, float y) { 4144 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4145 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4146 4147 if ((mSnapScrollMode & SNAP_X) != 0) { 4148 sy = 0; 4149 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4150 sx = 0; 4151 } 4152 4153 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4154 mCurrStretchX = sx; 4155 mCurrStretchY = sy; 4156 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4157 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4158 " " + sy); 4159 } 4160 if (mProxy.onStretchChange(sx, sy)) { 4161 invalidate(); 4162 } 4163 } 4164 } 4165 4166 public void stopDrag() { 4167 final int DURATION = 200; 4168 int now = (int)SystemClock.uptimeMillis(); 4169 mInterp = new Interpolator(2); 4170 mXY[0] = mCurrStretchX; 4171 mXY[1] = mCurrStretchY; 4172 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4173 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4174 mInterp.setKeyFrame(0, now, mXY, blend); 4175 float[] zerozero = new float[] { 0, 0 }; 4176 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4177 mState = ANIMATING_STATE; 4178 4179 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4180 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4181 } 4182 } 4183 4184 // Call this after each draw. If it ruturns null, the tracker is done 4185 public boolean isFinished() { 4186 return mState == FINISHED_STATE; 4187 } 4188 4189 private int hiddenHeightOfTitleBar() { 4190 return getTitleHeight() - getVisibleTitleHeight(); 4191 } 4192 4193 // need a way to know if 565 or 8888 is the right config for 4194 // capturing the display and giving it to the drag proxy 4195 private Bitmap.Config offscreenBitmapConfig() { 4196 // hard code 565 for now 4197 return Bitmap.Config.RGB_565; 4198 } 4199 4200 /* If the tracker draws, then this returns true, otherwise it will 4201 return false, and draw nothing. 4202 */ 4203 public boolean draw(Canvas canvas) { 4204 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4205 int sx = getScrollX(); 4206 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4207 if (mSX != sx || mSY != sy) { 4208 buildBitmap(sx, sy); 4209 mSX = sx; 4210 mSY = sy; 4211 } 4212 4213 if (mState == ANIMATING_STATE) { 4214 Interpolator.Result result = mInterp.timeToValues(mXY); 4215 if (result == Interpolator.Result.FREEZE_END) { 4216 mState = FINISHED_STATE; 4217 return false; 4218 } else { 4219 mProxy.onStretchChange(mXY[0], mXY[1]); 4220 invalidate(); 4221 // fall through to the draw 4222 } 4223 } 4224 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4225 canvas.translate(sx, sy); 4226 mProxy.onDraw(canvas); 4227 canvas.restoreToCount(count); 4228 return true; 4229 } 4230 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4231 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4232 mCurrStretchX + " " + mCurrStretchY); 4233 } 4234 return false; 4235 } 4236 4237 private void buildBitmap(int sx, int sy) { 4238 int w = getWidth(); 4239 int h = getViewHeight(); 4240 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4241 Canvas canvas = new Canvas(bm); 4242 canvas.translate(-sx, -sy); 4243 drawContent(canvas); 4244 4245 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4246 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4247 " " + sy + " " + w + " " + h); 4248 } 4249 mProxy.onBitmapChange(bm); 4250 } 4251 } 4252 4253 /** @hide */ 4254 public static class DragTracker { 4255 public void onStartDrag(float x, float y) {} 4256 public boolean onStretchChange(float sx, float sy) { 4257 // return true to have us inval the view 4258 return false; 4259 } 4260 public void onStopDrag() {} 4261 public void onBitmapChange(Bitmap bm) {} 4262 public void onDraw(Canvas canvas) {} 4263 } 4264 4265 /** @hide */ 4266 public DragTracker getDragTracker() { 4267 return mDragTracker; 4268 } 4269 4270 /** @hide */ 4271 public void setDragTracker(DragTracker tracker) { 4272 mDragTracker = tracker; 4273 } 4274 4275 private DragTracker mDragTracker; 4276 private DragTrackerHandler mDragTrackerHandler; 4277 4278 private class ScaleDetectorListener implements 4279 ScaleGestureDetector.OnScaleGestureListener { 4280 4281 public boolean onScaleBegin(ScaleGestureDetector detector) { 4282 // cancel the single touch handling 4283 cancelTouch(); 4284 if (mZoomButtonsController.isVisible()) { 4285 mZoomButtonsController.setVisible(false); 4286 } 4287 // reset the zoom overview mode so that the page won't auto grow 4288 mInZoomOverview = false; 4289 // If it is in password mode, turn it off so it does not draw 4290 // misplaced. 4291 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4292 mWebTextView.setInPassword(false); 4293 } 4294 return true; 4295 } 4296 4297 public void onScaleEnd(ScaleGestureDetector detector) { 4298 if (mPreviewZoomOnly) { 4299 mPreviewZoomOnly = false; 4300 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4301 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4302 // don't reflow when zoom in; when zoom out, do reflow if the 4303 // new scale is almost minimum scale; 4304 boolean reflowNow = (mActualScale - mMinZoomScale <= 0.01f) 4305 || ((mActualScale <= 0.8 * mTextWrapScale)); 4306 // force zoom after mPreviewZoomOnly is set to false so that the 4307 // new view size will be passed to the WebKit 4308 setNewZoomScale(mActualScale, reflowNow, true); 4309 // call invalidate() to draw without zoom filter 4310 invalidate(); 4311 } 4312 // adjust the edit text view if needed 4313 if (inEditingMode() && didUpdateTextViewBounds(false) 4314 && nativeFocusCandidateIsPassword()) { 4315 // If it is a password field, start drawing the 4316 // WebTextView once again. 4317 mWebTextView.setInPassword(true); 4318 } 4319 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4320 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4321 // may trigger the unwanted fling. 4322 mTouchMode = TOUCH_PINCH_DRAG; 4323 startTouch(detector.getFocusX(), detector.getFocusY(), 4324 mLastTouchTime); 4325 } 4326 4327 public boolean onScale(ScaleGestureDetector detector) { 4328 float scale = (float) (Math.round(detector.getScaleFactor() 4329 * mActualScale * 100) / 100.0); 4330 if (Math.abs(scale - mActualScale) >= PREVIEW_SCALE_INCREMENT) { 4331 mPreviewZoomOnly = true; 4332 // limit the scale change per step 4333 if (scale > mActualScale) { 4334 scale = Math.min(scale, mActualScale * 1.25f); 4335 } else { 4336 scale = Math.max(scale, mActualScale * 0.8f); 4337 } 4338 mZoomCenterX = detector.getFocusX(); 4339 mZoomCenterY = detector.getFocusY(); 4340 setNewZoomScale(scale, false, false); 4341 invalidate(); 4342 return true; 4343 } 4344 return false; 4345 } 4346 } 4347 4348 @Override 4349 public boolean onTouchEvent(MotionEvent ev) { 4350 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4351 return false; 4352 } 4353 4354 if (DebugFlags.WEB_VIEW) { 4355 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4356 + mTouchMode); 4357 } 4358 4359 int action; 4360 float x, y; 4361 long eventTime = ev.getEventTime(); 4362 4363 // FIXME: we may consider to give WebKit an option to handle multi-touch 4364 // events later. 4365 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 4366 if (mMinZoomScale < mMaxZoomScale) { 4367 mScaleDetector.onTouchEvent(ev); 4368 if (mScaleDetector.isInProgress()) { 4369 mLastTouchTime = eventTime; 4370 return true; 4371 } 4372 x = mScaleDetector.getFocusX(); 4373 y = mScaleDetector.getFocusY(); 4374 action = ev.getAction() & MotionEvent.ACTION_MASK; 4375 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4376 cancelTouch(); 4377 action = MotionEvent.ACTION_DOWN; 4378 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4379 // set mLastTouchX/Y to the remaining point 4380 mLastTouchX = x; 4381 mLastTouchY = y; 4382 } else if (action == MotionEvent.ACTION_MOVE) { 4383 // negative x or y indicate it is on the edge, skip it. 4384 if (x < 0 || y < 0) { 4385 return true; 4386 } 4387 } 4388 } else { 4389 // if the page disallow zoom, skip multi-pointer action 4390 return true; 4391 } 4392 } else { 4393 action = ev.getAction(); 4394 x = ev.getX(); 4395 y = ev.getY(); 4396 } 4397 4398 // Due to the touch screen edge effect, a touch closer to the edge 4399 // always snapped to the edge. As getViewWidth() can be different from 4400 // getWidth() due to the scrollbar, adjusting the point to match 4401 // getViewWidth(). Same applied to the height. 4402 if (x > getViewWidth() - 1) { 4403 x = getViewWidth() - 1; 4404 } 4405 if (y > getViewHeightWithTitle() - 1) { 4406 y = getViewHeightWithTitle() - 1; 4407 } 4408 4409 // pass the touch events from UI thread to WebCore thread 4410 if (mForwardTouchEvents && (action != MotionEvent.ACTION_MOVE 4411 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 4412 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 4413 ted.mAction = action; 4414 ted.mX = viewToContentX((int) x + mScrollX); 4415 ted.mY = viewToContentY((int) y + mScrollY); 4416 ted.mEventTime = eventTime; 4417 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4418 mLastSentTouchTime = eventTime; 4419 } 4420 4421 float fDeltaX = mLastTouchX - x; 4422 float fDeltaY = mLastTouchY - y; 4423 int deltaX = (int) fDeltaX; 4424 int deltaY = (int) fDeltaY; 4425 4426 switch (action) { 4427 case MotionEvent.ACTION_DOWN: { 4428 mPreventDrag = PREVENT_DRAG_NO; 4429 if (!mScroller.isFinished()) { 4430 // stop the current scroll animation, but if this is 4431 // the start of a fling, allow it to add to the current 4432 // fling's velocity 4433 mScroller.abortAnimation(); 4434 mTouchMode = TOUCH_DRAG_START_MODE; 4435 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 4436 } else if (mShiftIsPressed) { 4437 mSelectX = mScrollX + (int) x; 4438 mSelectY = mScrollY + (int) y; 4439 mTouchMode = TOUCH_SELECT_MODE; 4440 if (DebugFlags.WEB_VIEW) { 4441 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 4442 } 4443 nativeMoveSelection(viewToContentX(mSelectX), 4444 viewToContentY(mSelectY), false); 4445 mTouchSelection = mExtendSelection = true; 4446 invalidate(); // draw the i-beam instead of the arrow 4447 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4448 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4449 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4450 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4451 } else { 4452 // commit the short press action for the previous tap 4453 doShortPress(); 4454 // continue, mTouchMode should be still TOUCH_INIT_MODE 4455 } 4456 } else { 4457 mPreviewZoomOnly = false; 4458 mTouchMode = TOUCH_INIT_MODE; 4459 mPreventDrag = mForwardTouchEvents ? PREVENT_DRAG_MAYBE_YES 4460 : PREVENT_DRAG_NO; 4461 mPreventLongPress = false; 4462 mPreventDoubleTap = false; 4463 mWebViewCore.sendMessage( 4464 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4465 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4466 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 4467 (eventTime - mLastTouchUpTime), eventTime); 4468 } 4469 } 4470 // Trigger the link 4471 if (mTouchMode == TOUCH_INIT_MODE 4472 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4473 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4474 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 4475 } 4476 startTouch(x, y, eventTime); 4477 break; 4478 } 4479 case MotionEvent.ACTION_MOVE: { 4480 if (mTouchMode == TOUCH_DONE_MODE) { 4481 // no dragging during scroll zoom animation 4482 break; 4483 } 4484 mVelocityTracker.addMovement(ev); 4485 4486 if (mTouchMode != TOUCH_DRAG_MODE) { 4487 if (mTouchMode == TOUCH_SELECT_MODE) { 4488 mSelectX = mScrollX + (int) x; 4489 mSelectY = mScrollY + (int) y; 4490 if (DebugFlags.WEB_VIEW) { 4491 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 4492 } 4493 nativeMoveSelection(viewToContentX(mSelectX), 4494 viewToContentY(mSelectY), true); 4495 invalidate(); 4496 break; 4497 } 4498 if ((deltaX * deltaX + deltaY * deltaY) < mTouchSlopSquare) { 4499 break; 4500 } 4501 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 4502 // track mLastTouchTime as we may need to do fling at 4503 // ACTION_UP 4504 mLastTouchTime = eventTime; 4505 break; 4506 } 4507 if (mTouchMode == TOUCH_SHORTPRESS_MODE 4508 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4509 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4510 } else if (mTouchMode == TOUCH_INIT_MODE 4511 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4512 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4513 } 4514 if (mFullScreenHolder != null) { 4515 // in full screen mode, the WebView can't be panned. 4516 mTouchMode = TOUCH_DONE_MODE; 4517 break; 4518 } 4519 4520 // if it starts nearly horizontal or vertical, enforce it 4521 int ax = Math.abs(deltaX); 4522 int ay = Math.abs(deltaY); 4523 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4524 mSnapScrollMode = SNAP_X; 4525 mSnapPositive = deltaX > 0; 4526 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4527 mSnapScrollMode = SNAP_Y; 4528 mSnapPositive = deltaY > 0; 4529 } 4530 4531 mTouchMode = TOUCH_DRAG_MODE; 4532 mLastTouchX = x; 4533 mLastTouchY = y; 4534 fDeltaX = 0.0f; 4535 fDeltaY = 0.0f; 4536 deltaX = 0; 4537 deltaY = 0; 4538 4539 WebViewCore.reducePriority(); 4540 if (!mDragFromTextInput) { 4541 nativeHideCursor(); 4542 } 4543 WebSettings settings = getSettings(); 4544 if (settings.supportZoom() 4545 && settings.getBuiltInZoomControls() 4546 && !mZoomButtonsController.isVisible() 4547 && mMinZoomScale < mMaxZoomScale) { 4548 mZoomButtonsController.setVisible(true); 4549 int count = settings.getDoubleTapToastCount(); 4550 if (mInZoomOverview && count > 0) { 4551 settings.setDoubleTapToastCount(--count); 4552 Toast.makeText(mContext, 4553 com.android.internal.R.string.double_tap_toast, 4554 Toast.LENGTH_LONG).show(); 4555 } 4556 } 4557 } 4558 4559 // do pan 4560 int newScrollX = pinLocX(mScrollX + deltaX); 4561 int newDeltaX = newScrollX - mScrollX; 4562 if (deltaX != newDeltaX) { 4563 deltaX = newDeltaX; 4564 fDeltaX = (float) newDeltaX; 4565 } 4566 int newScrollY = pinLocY(mScrollY + deltaY); 4567 int newDeltaY = newScrollY - mScrollY; 4568 if (deltaY != newDeltaY) { 4569 deltaY = newDeltaY; 4570 fDeltaY = (float) newDeltaY; 4571 } 4572 boolean done = false; 4573 boolean keepScrollBarsVisible = false; 4574 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 4575 keepScrollBarsVisible = done = true; 4576 } else { 4577 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4578 int ax = Math.abs(deltaX); 4579 int ay = Math.abs(deltaY); 4580 if (mSnapScrollMode == SNAP_X) { 4581 // radical change means getting out of snap mode 4582 if (ay > MAX_SLOPE_FOR_DIAG * ax 4583 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4584 mSnapScrollMode = SNAP_NONE; 4585 } 4586 // reverse direction means lock in the snap mode 4587 if (ax > MAX_SLOPE_FOR_DIAG * ay && 4588 (mSnapPositive 4589 ? deltaX < -mMinLockSnapReverseDistance 4590 : deltaX > mMinLockSnapReverseDistance)) { 4591 mSnapScrollMode |= SNAP_LOCK; 4592 } 4593 } else { 4594 // radical change means getting out of snap mode 4595 if (ax > MAX_SLOPE_FOR_DIAG * ay 4596 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4597 mSnapScrollMode = SNAP_NONE; 4598 } 4599 // reverse direction means lock in the snap mode 4600 if (ay > MAX_SLOPE_FOR_DIAG * ax && 4601 (mSnapPositive 4602 ? deltaY < -mMinLockSnapReverseDistance 4603 : deltaY > mMinLockSnapReverseDistance)) { 4604 mSnapScrollMode |= SNAP_LOCK; 4605 } 4606 } 4607 } 4608 if (mSnapScrollMode != SNAP_NONE) { 4609 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 4610 deltaY = 0; 4611 } else { 4612 deltaX = 0; 4613 } 4614 } 4615 if ((deltaX | deltaY) != 0) { 4616 scrollBy(deltaX, deltaY); 4617 if (deltaX != 0) { 4618 mLastTouchX = x; 4619 } 4620 if (deltaY != 0) { 4621 mLastTouchY = y; 4622 } 4623 mHeldMotionless = MOTIONLESS_FALSE; 4624 } else { 4625 // keep the scrollbar on the screen even there is no 4626 // scroll 4627 keepScrollBarsVisible = true; 4628 } 4629 mLastTouchTime = eventTime; 4630 mUserScroll = true; 4631 } 4632 4633 if (!getSettings().getBuiltInZoomControls()) { 4634 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 4635 if (mZoomControls != null && showPlusMinus) { 4636 if (mZoomControls.getVisibility() == View.VISIBLE) { 4637 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4638 } else { 4639 mZoomControls.show(showPlusMinus, false); 4640 } 4641 mPrivateHandler.postDelayed(mZoomControlRunnable, 4642 ZOOM_CONTROLS_TIMEOUT); 4643 } 4644 } 4645 4646 if (mDragTrackerHandler != null) { 4647 mDragTrackerHandler.dragTo(x, y); 4648 } 4649 4650 if (keepScrollBarsVisible) { 4651 if (mHeldMotionless != MOTIONLESS_TRUE) { 4652 mHeldMotionless = MOTIONLESS_TRUE; 4653 invalidate(); 4654 } 4655 // keep the scrollbar on the screen even there is no scroll 4656 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 4657 false); 4658 // return false to indicate that we can't pan out of the 4659 // view space 4660 return !done; 4661 } 4662 break; 4663 } 4664 case MotionEvent.ACTION_UP: { 4665 if (mDragTrackerHandler != null) { 4666 mDragTrackerHandler.stopDrag(); 4667 } 4668 mLastTouchUpTime = eventTime; 4669 switch (mTouchMode) { 4670 case TOUCH_DOUBLE_TAP_MODE: // double tap 4671 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4672 mTouchMode = TOUCH_DONE_MODE; 4673 if (mPreventDoubleTap) { 4674 WebViewCore.TouchEventData ted 4675 = new WebViewCore.TouchEventData(); 4676 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 4677 ted.mX = viewToContentX((int) x + mScrollX); 4678 ted.mY = viewToContentY((int) y + mScrollY); 4679 ted.mEventTime = eventTime; 4680 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4681 } else if (mFullScreenHolder == null) { 4682 doDoubleTap(); 4683 } 4684 break; 4685 case TOUCH_SELECT_MODE: 4686 commitCopy(); 4687 mTouchSelection = false; 4688 break; 4689 case TOUCH_INIT_MODE: // tap 4690 case TOUCH_SHORTPRESS_START_MODE: 4691 case TOUCH_SHORTPRESS_MODE: 4692 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4693 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4694 if ((deltaX * deltaX + deltaY * deltaY) > mTouchSlopSquare) { 4695 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 4696 " WebCore's response for touch down."); 4697 if (mFullScreenHolder == null 4698 && (computeHorizontalScrollExtent() < computeHorizontalScrollRange() 4699 || computeVerticalScrollExtent() < computeVerticalScrollRange())) { 4700 // we will not rewrite drag code here, but we 4701 // will try fling if it applies. 4702 WebViewCore.reducePriority(); 4703 // fall through to TOUCH_DRAG_MODE 4704 } else { 4705 break; 4706 } 4707 } else { 4708 // mPreventDrag can be PREVENT_DRAG_MAYBE_YES in 4709 // TOUCH_INIT_MODE. To give WebCoreThread a little 4710 // more time to send PREVENT_TOUCH_ID, we check 4711 // again in responding RELEASE_SINGLE_TAP. 4712 if (mPreventDrag != PREVENT_DRAG_YES) { 4713 if (mTouchMode == TOUCH_INIT_MODE) { 4714 mPrivateHandler.sendMessageDelayed( 4715 mPrivateHandler.obtainMessage( 4716 RELEASE_SINGLE_TAP), 4717 ViewConfiguration.getDoubleTapTimeout()); 4718 } else { 4719 mTouchMode = TOUCH_DONE_MODE; 4720 doShortPress(); 4721 } 4722 } 4723 break; 4724 } 4725 case TOUCH_DRAG_MODE: 4726 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4727 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4728 mHeldMotionless = MOTIONLESS_TRUE; 4729 // redraw in high-quality, as we're done dragging 4730 invalidate(); 4731 // if the user waits a while w/o moving before the 4732 // up, we don't want to do a fling 4733 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4734 mVelocityTracker.addMovement(ev); 4735 doFling(); 4736 break; 4737 } 4738 mLastVelocity = 0; 4739 WebViewCore.resumePriority(); 4740 break; 4741 case TOUCH_DRAG_START_MODE: 4742 case TOUCH_DONE_MODE: 4743 // do nothing 4744 break; 4745 } 4746 // we also use mVelocityTracker == null to tell us that we are 4747 // not "moving around", so we can take the slower/prettier 4748 // mode in the drawing code 4749 if (mVelocityTracker != null) { 4750 mVelocityTracker.recycle(); 4751 mVelocityTracker = null; 4752 } 4753 break; 4754 } 4755 case MotionEvent.ACTION_CANCEL: { 4756 cancelTouch(); 4757 break; 4758 } 4759 } 4760 return true; 4761 } 4762 4763 private void startTouch(float x, float y, long eventTime) { 4764 // Remember where the motion event started 4765 mLastTouchX = x; 4766 mLastTouchY = y; 4767 mLastTouchTime = eventTime; 4768 mVelocityTracker = VelocityTracker.obtain(); 4769 mSnapScrollMode = SNAP_NONE; 4770 if (mDragTracker != null) { 4771 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 4772 } 4773 } 4774 4775 private void cancelTouch() { 4776 if (mDragTrackerHandler != null) { 4777 mDragTrackerHandler.stopDrag(); 4778 } 4779 // we also use mVelocityTracker == null to tell us that we are 4780 // not "moving around", so we can take the slower/prettier 4781 // mode in the drawing code 4782 if (mVelocityTracker != null) { 4783 mVelocityTracker.recycle(); 4784 mVelocityTracker = null; 4785 } 4786 if (mTouchMode == TOUCH_DRAG_MODE) { 4787 WebViewCore.resumePriority(); 4788 } 4789 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4790 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4791 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4792 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4793 mHeldMotionless = MOTIONLESS_TRUE; 4794 mTouchMode = TOUCH_DONE_MODE; 4795 nativeHideCursor(); 4796 } 4797 4798 private long mTrackballFirstTime = 0; 4799 private long mTrackballLastTime = 0; 4800 private float mTrackballRemainsX = 0.0f; 4801 private float mTrackballRemainsY = 0.0f; 4802 private int mTrackballXMove = 0; 4803 private int mTrackballYMove = 0; 4804 private boolean mExtendSelection = false; 4805 private boolean mTouchSelection = false; 4806 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4807 private static final int TRACKBALL_TIMEOUT = 200; 4808 private static final int TRACKBALL_WAIT = 100; 4809 private static final int TRACKBALL_SCALE = 400; 4810 private static final int TRACKBALL_SCROLL_COUNT = 5; 4811 private static final int TRACKBALL_MOVE_COUNT = 10; 4812 private static final int TRACKBALL_MULTIPLIER = 3; 4813 private static final int SELECT_CURSOR_OFFSET = 16; 4814 private int mSelectX = 0; 4815 private int mSelectY = 0; 4816 private boolean mFocusSizeChanged = false; 4817 private boolean mShiftIsPressed = false; 4818 private boolean mTrackballDown = false; 4819 private long mTrackballUpTime = 0; 4820 private long mLastCursorTime = 0; 4821 private Rect mLastCursorBounds; 4822 4823 // Set by default; BrowserActivity clears to interpret trackball data 4824 // directly for movement. Currently, the framework only passes 4825 // arrow key events, not trackball events, from one child to the next 4826 private boolean mMapTrackballToArrowKeys = true; 4827 4828 public void setMapTrackballToArrowKeys(boolean setMap) { 4829 mMapTrackballToArrowKeys = setMap; 4830 } 4831 4832 void resetTrackballTime() { 4833 mTrackballLastTime = 0; 4834 } 4835 4836 @Override 4837 public boolean onTrackballEvent(MotionEvent ev) { 4838 long time = ev.getEventTime(); 4839 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4840 if (ev.getY() > 0) pageDown(true); 4841 if (ev.getY() < 0) pageUp(true); 4842 return true; 4843 } 4844 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4845 if (mShiftIsPressed) { 4846 return true; // discard press if copy in progress 4847 } 4848 mTrackballDown = true; 4849 if (mNativeClass == 0) { 4850 return false; 4851 } 4852 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4853 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4854 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4855 nativeSelectBestAt(mLastCursorBounds); 4856 } 4857 if (DebugFlags.WEB_VIEW) { 4858 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4859 + " time=" + time 4860 + " mLastCursorTime=" + mLastCursorTime); 4861 } 4862 if (isInTouchMode()) requestFocusFromTouch(); 4863 return false; // let common code in onKeyDown at it 4864 } 4865 if (ev.getAction() == MotionEvent.ACTION_UP) { 4866 // LONG_PRESS_CENTER is set in common onKeyDown 4867 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4868 mTrackballDown = false; 4869 mTrackballUpTime = time; 4870 if (mShiftIsPressed) { 4871 if (mExtendSelection) { 4872 commitCopy(); 4873 } else { 4874 mExtendSelection = true; 4875 invalidate(); // draw the i-beam instead of the arrow 4876 } 4877 return true; // discard press if copy in progress 4878 } 4879 if (DebugFlags.WEB_VIEW) { 4880 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4881 + " time=" + time 4882 ); 4883 } 4884 return false; // let common code in onKeyUp at it 4885 } 4886 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4887 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4888 return false; 4889 } 4890 if (mTrackballDown) { 4891 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4892 return true; // discard move if trackball is down 4893 } 4894 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4895 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4896 return true; 4897 } 4898 // TODO: alternatively we can do panning as touch does 4899 switchOutDrawHistory(); 4900 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4901 if (DebugFlags.WEB_VIEW) { 4902 Log.v(LOGTAG, "onTrackballEvent time=" 4903 + time + " last=" + mTrackballLastTime); 4904 } 4905 mTrackballFirstTime = time; 4906 mTrackballXMove = mTrackballYMove = 0; 4907 } 4908 mTrackballLastTime = time; 4909 if (DebugFlags.WEB_VIEW) { 4910 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4911 } 4912 mTrackballRemainsX += ev.getX(); 4913 mTrackballRemainsY += ev.getY(); 4914 doTrackball(time); 4915 return true; 4916 } 4917 4918 void moveSelection(float xRate, float yRate) { 4919 if (mNativeClass == 0) 4920 return; 4921 int width = getViewWidth(); 4922 int height = getViewHeight(); 4923 mSelectX += xRate; 4924 mSelectY += yRate; 4925 int maxX = width + mScrollX; 4926 int maxY = height + mScrollY; 4927 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 4928 , mSelectX)); 4929 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 4930 , mSelectY)); 4931 if (DebugFlags.WEB_VIEW) { 4932 Log.v(LOGTAG, "moveSelection" 4933 + " mSelectX=" + mSelectX 4934 + " mSelectY=" + mSelectY 4935 + " mScrollX=" + mScrollX 4936 + " mScrollY=" + mScrollY 4937 + " xRate=" + xRate 4938 + " yRate=" + yRate 4939 ); 4940 } 4941 nativeMoveSelection(viewToContentX(mSelectX), 4942 viewToContentY(mSelectY), mExtendSelection); 4943 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 4944 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4945 : 0; 4946 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 4947 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4948 : 0; 4949 pinScrollBy(scrollX, scrollY, true, 0); 4950 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 4951 requestRectangleOnScreen(select); 4952 invalidate(); 4953 } 4954 4955 private int scaleTrackballX(float xRate, int width) { 4956 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4957 int nextXMove = xMove; 4958 if (xMove > 0) { 4959 if (xMove > mTrackballXMove) { 4960 xMove -= mTrackballXMove; 4961 } 4962 } else if (xMove < mTrackballXMove) { 4963 xMove -= mTrackballXMove; 4964 } 4965 mTrackballXMove = nextXMove; 4966 return xMove; 4967 } 4968 4969 private int scaleTrackballY(float yRate, int height) { 4970 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 4971 int nextYMove = yMove; 4972 if (yMove > 0) { 4973 if (yMove > mTrackballYMove) { 4974 yMove -= mTrackballYMove; 4975 } 4976 } else if (yMove < mTrackballYMove) { 4977 yMove -= mTrackballYMove; 4978 } 4979 mTrackballYMove = nextYMove; 4980 return yMove; 4981 } 4982 4983 private int keyCodeToSoundsEffect(int keyCode) { 4984 switch(keyCode) { 4985 case KeyEvent.KEYCODE_DPAD_UP: 4986 return SoundEffectConstants.NAVIGATION_UP; 4987 case KeyEvent.KEYCODE_DPAD_RIGHT: 4988 return SoundEffectConstants.NAVIGATION_RIGHT; 4989 case KeyEvent.KEYCODE_DPAD_DOWN: 4990 return SoundEffectConstants.NAVIGATION_DOWN; 4991 case KeyEvent.KEYCODE_DPAD_LEFT: 4992 return SoundEffectConstants.NAVIGATION_LEFT; 4993 } 4994 throw new IllegalArgumentException("keyCode must be one of " + 4995 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 4996 "KEYCODE_DPAD_LEFT}."); 4997 } 4998 4999 private void doTrackball(long time) { 5000 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5001 if (elapsed == 0) { 5002 elapsed = TRACKBALL_TIMEOUT; 5003 } 5004 float xRate = mTrackballRemainsX * 1000 / elapsed; 5005 float yRate = mTrackballRemainsY * 1000 / elapsed; 5006 int viewWidth = getViewWidth(); 5007 int viewHeight = getViewHeight(); 5008 if (mShiftIsPressed) { 5009 moveSelection(scaleTrackballX(xRate, viewWidth), 5010 scaleTrackballY(yRate, viewHeight)); 5011 mTrackballRemainsX = mTrackballRemainsY = 0; 5012 return; 5013 } 5014 float ax = Math.abs(xRate); 5015 float ay = Math.abs(yRate); 5016 float maxA = Math.max(ax, ay); 5017 if (DebugFlags.WEB_VIEW) { 5018 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5019 + " xRate=" + xRate 5020 + " yRate=" + yRate 5021 + " mTrackballRemainsX=" + mTrackballRemainsX 5022 + " mTrackballRemainsY=" + mTrackballRemainsY); 5023 } 5024 int width = mContentWidth - viewWidth; 5025 int height = mContentHeight - viewHeight; 5026 if (width < 0) width = 0; 5027 if (height < 0) height = 0; 5028 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5029 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5030 maxA = Math.max(ax, ay); 5031 int count = Math.max(0, (int) maxA); 5032 int oldScrollX = mScrollX; 5033 int oldScrollY = mScrollY; 5034 if (count > 0) { 5035 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5036 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5037 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5038 KeyEvent.KEYCODE_DPAD_RIGHT; 5039 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5040 if (DebugFlags.WEB_VIEW) { 5041 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5042 + " count=" + count 5043 + " mTrackballRemainsX=" + mTrackballRemainsX 5044 + " mTrackballRemainsY=" + mTrackballRemainsY); 5045 } 5046 if (navHandledKey(selectKeyCode, count, false, time, false)) { 5047 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5048 } 5049 mTrackballRemainsX = mTrackballRemainsY = 0; 5050 } 5051 if (count >= TRACKBALL_SCROLL_COUNT) { 5052 int xMove = scaleTrackballX(xRate, width); 5053 int yMove = scaleTrackballY(yRate, height); 5054 if (DebugFlags.WEB_VIEW) { 5055 Log.v(LOGTAG, "doTrackball pinScrollBy" 5056 + " count=" + count 5057 + " xMove=" + xMove + " yMove=" + yMove 5058 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5059 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5060 ); 5061 } 5062 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5063 xMove = 0; 5064 } 5065 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5066 yMove = 0; 5067 } 5068 if (xMove != 0 || yMove != 0) { 5069 pinScrollBy(xMove, yMove, true, 0); 5070 } 5071 mUserScroll = true; 5072 } 5073 } 5074 5075 private int computeMaxScrollY() { 5076 int maxContentH = computeVerticalScrollRange() + getTitleHeight(); 5077 return Math.max(maxContentH - getViewHeightWithTitle(), getTitleHeight()); 5078 } 5079 5080 public void flingScroll(int vx, int vy) { 5081 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5082 int maxY = computeMaxScrollY(); 5083 5084 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 5085 invalidate(); 5086 } 5087 5088 private void doFling() { 5089 if (mVelocityTracker == null) { 5090 return; 5091 } 5092 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5093 int maxY = computeMaxScrollY(); 5094 5095 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5096 int vx = (int) mVelocityTracker.getXVelocity(); 5097 int vy = (int) mVelocityTracker.getYVelocity(); 5098 5099 if (mSnapScrollMode != SNAP_NONE) { 5100 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5101 vy = 0; 5102 } else { 5103 vx = 0; 5104 } 5105 } 5106 5107 if (true /* EMG release: make our fling more like Maps' */) { 5108 // maps cuts their velocity in half 5109 vx = vx * 3 / 4; 5110 vy = vy * 3 / 4; 5111 } 5112 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5113 WebViewCore.resumePriority(); 5114 return; 5115 } 5116 float currentVelocity = mScroller.getCurrVelocity(); 5117 if (mLastVelocity > 0 && currentVelocity > 0) { 5118 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5119 - Math.atan2(vy, vx))); 5120 final float circle = (float) (Math.PI) * 2.0f; 5121 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5122 vx += currentVelocity * mLastVelX / mLastVelocity; 5123 vy += currentVelocity * mLastVelY / mLastVelocity; 5124 if (DebugFlags.WEB_VIEW) { 5125 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5126 } 5127 } else if (DebugFlags.WEB_VIEW) { 5128 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5129 } 5130 } else if (DebugFlags.WEB_VIEW) { 5131 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5132 + " current=" + currentVelocity 5133 + " vx=" + vx + " vy=" + vy 5134 + " maxX=" + maxX + " maxY=" + maxY 5135 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5136 } 5137 mLastVelX = vx; 5138 mLastVelY = vy; 5139 mLastVelocity = (float) Math.hypot(vx, vy); 5140 5141 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 5142 // TODO: duration is calculated based on velocity, if the range is 5143 // small, the animation will stop before duration is up. We may 5144 // want to calculate how long the animation is going to run to precisely 5145 // resume the webcore update. 5146 final int time = mScroller.getDuration(); 5147 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5148 awakenScrollBars(time); 5149 invalidate(); 5150 } 5151 5152 private boolean zoomWithPreview(float scale) { 5153 float oldScale = mActualScale; 5154 mInitialScrollX = mScrollX; 5155 mInitialScrollY = mScrollY; 5156 5157 // snap to DEFAULT_SCALE if it is close 5158 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 5159 scale = mDefaultScale; 5160 } 5161 5162 setNewZoomScale(scale, true, false); 5163 5164 if (oldScale != mActualScale) { 5165 // use mZoomPickerScale to see zoom preview first 5166 mZoomStart = SystemClock.uptimeMillis(); 5167 mInvInitialZoomScale = 1.0f / oldScale; 5168 mInvFinalZoomScale = 1.0f / mActualScale; 5169 mZoomScale = mActualScale; 5170 WebViewCore.pauseUpdatePicture(mWebViewCore); 5171 invalidate(); 5172 return true; 5173 } else { 5174 return false; 5175 } 5176 } 5177 5178 /** 5179 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5180 * in charge of installing this view to the view hierarchy. This view will 5181 * become visible when the user starts scrolling via touch and fade away if 5182 * the user does not interact with it. 5183 * <p/> 5184 * API version 3 introduces a built-in zoom mechanism that is shown 5185 * automatically by the MapView. This is the preferred approach for 5186 * showing the zoom UI. 5187 * 5188 * @deprecated The built-in zoom mechanism is preferred, see 5189 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5190 */ 5191 @Deprecated 5192 public View getZoomControls() { 5193 if (!getSettings().supportZoom()) { 5194 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5195 return null; 5196 } 5197 if (mZoomControls == null) { 5198 mZoomControls = createZoomControls(); 5199 5200 /* 5201 * need to be set to VISIBLE first so that getMeasuredHeight() in 5202 * {@link #onSizeChanged()} can return the measured value for proper 5203 * layout. 5204 */ 5205 mZoomControls.setVisibility(View.VISIBLE); 5206 mZoomControlRunnable = new Runnable() { 5207 public void run() { 5208 5209 /* Don't dismiss the controls if the user has 5210 * focus on them. Wait and check again later. 5211 */ 5212 if (!mZoomControls.hasFocus()) { 5213 mZoomControls.hide(); 5214 } else { 5215 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5216 mPrivateHandler.postDelayed(mZoomControlRunnable, 5217 ZOOM_CONTROLS_TIMEOUT); 5218 } 5219 } 5220 }; 5221 } 5222 return mZoomControls; 5223 } 5224 5225 private ExtendedZoomControls createZoomControls() { 5226 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 5227 , null); 5228 zoomControls.setOnZoomInClickListener(new OnClickListener() { 5229 public void onClick(View v) { 5230 // reset time out 5231 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5232 mPrivateHandler.postDelayed(mZoomControlRunnable, 5233 ZOOM_CONTROLS_TIMEOUT); 5234 zoomIn(); 5235 } 5236 }); 5237 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 5238 public void onClick(View v) { 5239 // reset time out 5240 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5241 mPrivateHandler.postDelayed(mZoomControlRunnable, 5242 ZOOM_CONTROLS_TIMEOUT); 5243 zoomOut(); 5244 } 5245 }); 5246 return zoomControls; 5247 } 5248 5249 /** 5250 * Gets the {@link ZoomButtonsController} which can be used to add 5251 * additional buttons to the zoom controls window. 5252 * 5253 * @return The instance of {@link ZoomButtonsController} used by this class, 5254 * or null if it is unavailable. 5255 * @hide 5256 */ 5257 public ZoomButtonsController getZoomButtonsController() { 5258 return mZoomButtonsController; 5259 } 5260 5261 /** 5262 * Perform zoom in in the webview 5263 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 5264 */ 5265 public boolean zoomIn() { 5266 // TODO: alternatively we can disallow this during draw history mode 5267 switchOutDrawHistory(); 5268 mInZoomOverview = false; 5269 // Center zooming to the center of the screen. 5270 mZoomCenterX = getViewWidth() * .5f; 5271 mZoomCenterY = getViewHeight() * .5f; 5272 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5273 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5274 return zoomWithPreview(mActualScale * 1.25f); 5275 } 5276 5277 /** 5278 * Perform zoom out in the webview 5279 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 5280 */ 5281 public boolean zoomOut() { 5282 // TODO: alternatively we can disallow this during draw history mode 5283 switchOutDrawHistory(); 5284 // Center zooming to the center of the screen. 5285 mZoomCenterX = getViewWidth() * .5f; 5286 mZoomCenterY = getViewHeight() * .5f; 5287 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5288 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5289 return zoomWithPreview(mActualScale * 0.8f); 5290 } 5291 5292 private void updateSelection() { 5293 if (mNativeClass == 0) { 5294 return; 5295 } 5296 // mLastTouchX and mLastTouchY are the point in the current viewport 5297 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5298 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5299 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 5300 contentX + mNavSlop, contentY + mNavSlop); 5301 nativeSelectBestAt(rect); 5302 } 5303 5304 /** 5305 * Scroll the focused text field/area to match the WebTextView 5306 * @param xPercent New x position of the WebTextView from 0 to 1. 5307 * @param y New y position of the WebTextView in view coordinates 5308 */ 5309 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 5310 if (!inEditingMode() || mWebViewCore == null) { 5311 return; 5312 } 5313 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 5314 // Since this position is relative to the top of the text input 5315 // field, we do not need to take the title bar's height into 5316 // consideration. 5317 viewToContentDimension(y), 5318 new Float(xPercent)); 5319 } 5320 5321 /** 5322 * Set our starting point and time for a drag from the WebTextView. 5323 */ 5324 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 5325 if (!inEditingMode()) { 5326 return; 5327 } 5328 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 5329 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 5330 mLastTouchTime = eventTime; 5331 if (!mScroller.isFinished()) { 5332 abortAnimation(); 5333 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5334 } 5335 mSnapScrollMode = SNAP_NONE; 5336 mVelocityTracker = VelocityTracker.obtain(); 5337 mTouchMode = TOUCH_DRAG_START_MODE; 5338 } 5339 5340 /** 5341 * Given a motion event from the WebTextView, set its location to our 5342 * coordinates, and handle the event. 5343 */ 5344 /*package*/ boolean textFieldDrag(MotionEvent event) { 5345 if (!inEditingMode()) { 5346 return false; 5347 } 5348 mDragFromTextInput = true; 5349 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 5350 (float) (mWebTextView.getTop() - mScrollY)); 5351 boolean result = onTouchEvent(event); 5352 mDragFromTextInput = false; 5353 return result; 5354 } 5355 5356 /** 5357 * Due a touch up from a WebTextView. This will be handled by webkit to 5358 * change the selection. 5359 * @param event MotionEvent in the WebTextView's coordinates. 5360 */ 5361 /*package*/ void touchUpOnTextField(MotionEvent event) { 5362 if (!inEditingMode()) { 5363 return; 5364 } 5365 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 5366 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 5367 nativeMotionUp(x, y, mNavSlop); 5368 } 5369 5370 /** 5371 * Called when pressing the center key or trackball on a textfield. 5372 */ 5373 /*package*/ void centerKeyPressOnTextField() { 5374 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 5375 nativeCursorNodePointer()); 5376 } 5377 5378 private void doShortPress() { 5379 if (mNativeClass == 0) { 5380 return; 5381 } 5382 switchOutDrawHistory(); 5383 // mLastTouchX and mLastTouchY are the point in the current viewport 5384 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5385 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5386 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 5387 WebViewCore.MotionUpData motionUpData = new WebViewCore 5388 .MotionUpData(); 5389 motionUpData.mFrame = nativeCacheHitFramePointer(); 5390 motionUpData.mNode = nativeCacheHitNodePointer(); 5391 motionUpData.mBounds = nativeCacheHitNodeBounds(); 5392 motionUpData.mX = contentX; 5393 motionUpData.mY = contentY; 5394 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 5395 motionUpData); 5396 } else { 5397 doMotionUp(contentX, contentY); 5398 } 5399 } 5400 5401 private void doMotionUp(int contentX, int contentY) { 5402 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 5403 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 5404 } 5405 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 5406 playSoundEffect(SoundEffectConstants.CLICK); 5407 } 5408 } 5409 5410 // Rule for double tap: 5411 // 1. if the current scale is not same as the text wrap scale and layout 5412 // algorithm is NARROW_COLUMNS, fit to column; 5413 // 2. if the current state is not overview mode, change to overview mode; 5414 // 3. if the current state is overview mode, change to default scale. 5415 private void doDoubleTap() { 5416 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 5417 return; 5418 } 5419 mZoomCenterX = mLastTouchX; 5420 mZoomCenterY = mLastTouchY; 5421 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5422 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5423 WebSettings settings = getSettings(); 5424 // remove the zoom control after double tap 5425 if (settings.getBuiltInZoomControls()) { 5426 if (mZoomButtonsController.isVisible()) { 5427 mZoomButtonsController.setVisible(false); 5428 } 5429 } else { 5430 if (mZoomControlRunnable != null) { 5431 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5432 } 5433 if (mZoomControls != null) { 5434 mZoomControls.hide(); 5435 } 5436 } 5437 settings.setDoubleTapToastCount(0); 5438 boolean zoomToDefault = false; 5439 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 5440 && (Math.abs(mActualScale - mTextWrapScale) >= 0.01f)) { 5441 setNewZoomScale(mActualScale, true, true); 5442 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 5443 if (Math.abs(mActualScale - overviewScale) < 0.01f) { 5444 mInZoomOverview = true; 5445 } 5446 } else if (!mInZoomOverview) { 5447 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 5448 if (Math.abs(mActualScale - newScale) >= 0.01f) { 5449 mInZoomOverview = true; 5450 // Force the titlebar fully reveal in overview mode 5451 if (mScrollY < getTitleHeight()) mScrollY = 0; 5452 zoomWithPreview(newScale); 5453 } else if (Math.abs(mActualScale - mDefaultScale) >= 0.01f) { 5454 zoomToDefault = true; 5455 } 5456 } else { 5457 zoomToDefault = true; 5458 } 5459 if (zoomToDefault) { 5460 mInZoomOverview = false; 5461 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 5462 if (left != NO_LEFTEDGE) { 5463 // add a 5pt padding to the left edge. 5464 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 5465 - mScrollX; 5466 // Re-calculate the zoom center so that the new scroll x will be 5467 // on the left edge. 5468 if (viewLeft > 0) { 5469 mZoomCenterX = viewLeft * mDefaultScale 5470 / (mDefaultScale - mActualScale); 5471 } else { 5472 scrollBy(viewLeft, 0); 5473 mZoomCenterX = 0; 5474 } 5475 } 5476 zoomWithPreview(mDefaultScale); 5477 } 5478 } 5479 5480 // Called by JNI to handle a touch on a node representing an email address, 5481 // address, or phone number 5482 private void overrideLoading(String url) { 5483 mCallbackProxy.uiOverrideUrlLoading(url); 5484 } 5485 5486 @Override 5487 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 5488 boolean result = false; 5489 if (inEditingMode()) { 5490 result = mWebTextView.requestFocus(direction, 5491 previouslyFocusedRect); 5492 } else { 5493 result = super.requestFocus(direction, previouslyFocusedRect); 5494 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 5495 // For cases such as GMail, where we gain focus from a direction, 5496 // we want to move to the first available link. 5497 // FIXME: If there are no visible links, we may not want to 5498 int fakeKeyDirection = 0; 5499 switch(direction) { 5500 case View.FOCUS_UP: 5501 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 5502 break; 5503 case View.FOCUS_DOWN: 5504 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 5505 break; 5506 case View.FOCUS_LEFT: 5507 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 5508 break; 5509 case View.FOCUS_RIGHT: 5510 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 5511 break; 5512 default: 5513 return result; 5514 } 5515 if (mNativeClass != 0 && !nativeHasCursorNode()) { 5516 navHandledKey(fakeKeyDirection, 1, true, 0, true); 5517 } 5518 } 5519 } 5520 return result; 5521 } 5522 5523 @Override 5524 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5525 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 5526 5527 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5528 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5529 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5530 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5531 5532 int measuredHeight = heightSize; 5533 int measuredWidth = widthSize; 5534 5535 // Grab the content size from WebViewCore. 5536 int contentHeight = contentToViewDimension(mContentHeight); 5537 int contentWidth = contentToViewDimension(mContentWidth); 5538 5539// Log.d(LOGTAG, "------- measure " + heightMode); 5540 5541 if (heightMode != MeasureSpec.EXACTLY) { 5542 mHeightCanMeasure = true; 5543 measuredHeight = contentHeight; 5544 if (heightMode == MeasureSpec.AT_MOST) { 5545 // If we are larger than the AT_MOST height, then our height can 5546 // no longer be measured and we should scroll internally. 5547 if (measuredHeight > heightSize) { 5548 measuredHeight = heightSize; 5549 mHeightCanMeasure = false; 5550 } 5551 } 5552 } else { 5553 mHeightCanMeasure = false; 5554 } 5555 if (mNativeClass != 0) { 5556 nativeSetHeightCanMeasure(mHeightCanMeasure); 5557 } 5558 // For the width, always use the given size unless unspecified. 5559 if (widthMode == MeasureSpec.UNSPECIFIED) { 5560 mWidthCanMeasure = true; 5561 measuredWidth = contentWidth; 5562 } else { 5563 mWidthCanMeasure = false; 5564 } 5565 5566 synchronized (this) { 5567 setMeasuredDimension(measuredWidth, measuredHeight); 5568 } 5569 } 5570 5571 @Override 5572 public boolean requestChildRectangleOnScreen(View child, 5573 Rect rect, 5574 boolean immediate) { 5575 rect.offset(child.getLeft() - child.getScrollX(), 5576 child.getTop() - child.getScrollY()); 5577 5578 int height = getViewHeightWithTitle(); 5579 int screenTop = mScrollY; 5580 int screenBottom = screenTop + height; 5581 5582 int scrollYDelta = 0; 5583 5584 if (rect.bottom > screenBottom) { 5585 int oneThirdOfScreenHeight = height / 3; 5586 if (rect.height() > 2 * oneThirdOfScreenHeight) { 5587 // If the rectangle is too tall to fit in the bottom two thirds 5588 // of the screen, place it at the top. 5589 scrollYDelta = rect.top - screenTop; 5590 } else { 5591 // If the rectangle will still fit on screen, we want its 5592 // top to be in the top third of the screen. 5593 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 5594 } 5595 } else if (rect.top < screenTop) { 5596 scrollYDelta = rect.top - screenTop; 5597 } 5598 5599 int width = getWidth() - getVerticalScrollbarWidth(); 5600 int screenLeft = mScrollX; 5601 int screenRight = screenLeft + width; 5602 5603 int scrollXDelta = 0; 5604 5605 if (rect.right > screenRight && rect.left > screenLeft) { 5606 if (rect.width() > width) { 5607 scrollXDelta += (rect.left - screenLeft); 5608 } else { 5609 scrollXDelta += (rect.right - screenRight); 5610 } 5611 } else if (rect.left < screenLeft) { 5612 scrollXDelta -= (screenLeft - rect.left); 5613 } 5614 5615 if ((scrollYDelta | scrollXDelta) != 0) { 5616 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 5617 } 5618 5619 return false; 5620 } 5621 5622 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 5623 String replace, int newStart, int newEnd) { 5624 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 5625 arg.mReplace = replace; 5626 arg.mNewStart = newStart; 5627 arg.mNewEnd = newEnd; 5628 mTextGeneration++; 5629 arg.mTextGeneration = mTextGeneration; 5630 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 5631 } 5632 5633 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 5634 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 5635 arg.mEvent = event; 5636 arg.mCurrentText = currentText; 5637 // Increase our text generation number, and pass it to webcore thread 5638 mTextGeneration++; 5639 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 5640 // WebKit's document state is not saved until about to leave the page. 5641 // To make sure the host application, like Browser, has the up to date 5642 // document state when it goes to background, we force to save the 5643 // document state. 5644 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 5645 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 5646 cursorData(), 1000); 5647 } 5648 5649 /* package */ WebViewCore getWebViewCore() { 5650 return mWebViewCore; 5651 } 5652 5653 //------------------------------------------------------------------------- 5654 // Methods can be called from a separate thread, like WebViewCore 5655 // If it needs to call the View system, it has to send message. 5656 //------------------------------------------------------------------------- 5657 5658 /** 5659 * General handler to receive message coming from webkit thread 5660 */ 5661 class PrivateHandler extends Handler { 5662 @Override 5663 public void handleMessage(Message msg) { 5664 // exclude INVAL_RECT_MSG_ID since it is frequently output 5665 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 5666 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 5667 > FIND_AGAIN ? Integer.toString(msg.what) 5668 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 5669 } 5670 if (mWebViewCore == null) { 5671 // after WebView's destroy() is called, skip handling messages. 5672 return; 5673 } 5674 switch (msg.what) { 5675 case REMEMBER_PASSWORD: { 5676 mDatabase.setUsernamePassword( 5677 msg.getData().getString("host"), 5678 msg.getData().getString("username"), 5679 msg.getData().getString("password")); 5680 ((Message) msg.obj).sendToTarget(); 5681 break; 5682 } 5683 case NEVER_REMEMBER_PASSWORD: { 5684 mDatabase.setUsernamePassword( 5685 msg.getData().getString("host"), null, null); 5686 ((Message) msg.obj).sendToTarget(); 5687 break; 5688 } 5689 case SWITCH_TO_SHORTPRESS: { 5690 // if mPreventDrag is not confirmed, treat it as no so that 5691 // it won't block panning the page. 5692 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5693 mPreventDrag = PREVENT_DRAG_NO; 5694 mPreventLongPress = false; 5695 mPreventDoubleTap = false; 5696 } 5697 if (mTouchMode == TOUCH_INIT_MODE) { 5698 mTouchMode = mFullScreenHolder == null 5699 ? TOUCH_SHORTPRESS_START_MODE 5700 : TOUCH_SHORTPRESS_MODE; 5701 updateSelection(); 5702 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5703 mTouchMode = TOUCH_DONE_MODE; 5704 } 5705 break; 5706 } 5707 case SWITCH_TO_LONGPRESS: { 5708 if (mPreventLongPress) { 5709 mTouchMode = TOUCH_DONE_MODE; 5710 WebViewCore.TouchEventData ted 5711 = new WebViewCore.TouchEventData(); 5712 ted.mAction = WebViewCore.ACTION_LONGPRESS; 5713 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 5714 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 5715 ted.mEventTime = SystemClock.uptimeMillis(); 5716 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5717 } else if (mPreventDrag == PREVENT_DRAG_NO) { 5718 mTouchMode = TOUCH_DONE_MODE; 5719 if (mFullScreenHolder == null) { 5720 performLongClick(); 5721 rebuildWebTextView(); 5722 } 5723 } 5724 break; 5725 } 5726 case RELEASE_SINGLE_TAP: { 5727 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5728 // if mPreventDrag is not confirmed, treat it as 5729 // no so that it won't block tap. 5730 mPreventDrag = PREVENT_DRAG_NO; 5731 mPreventLongPress = false; 5732 mPreventDoubleTap = false; 5733 } 5734 if (mPreventDrag == PREVENT_DRAG_NO) { 5735 mTouchMode = TOUCH_DONE_MODE; 5736 doShortPress(); 5737 } 5738 break; 5739 } 5740 case SCROLL_BY_MSG_ID: 5741 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 5742 break; 5743 case SYNC_SCROLL_TO_MSG_ID: 5744 if (mUserScroll) { 5745 // if user has scrolled explicitly, don't sync the 5746 // scroll position any more 5747 mUserScroll = false; 5748 break; 5749 } 5750 // fall through 5751 case SCROLL_TO_MSG_ID: 5752 if (setContentScrollTo(msg.arg1, msg.arg2)) { 5753 // if we can't scroll to the exact position due to pin, 5754 // send a message to WebCore to re-scroll when we get a 5755 // new picture 5756 mUserScroll = false; 5757 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 5758 msg.arg1, msg.arg2); 5759 } 5760 break; 5761 case SPAWN_SCROLL_TO_MSG_ID: 5762 spawnContentScrollTo(msg.arg1, msg.arg2); 5763 break; 5764 case UPDATE_ZOOM_RANGE: { 5765 WebViewCore.RestoreState restoreState 5766 = (WebViewCore.RestoreState) msg.obj; 5767 // mScrollX contains the new minPrefWidth 5768 updateZoomRange(restoreState, getViewWidth(), 5769 restoreState.mScrollX, false); 5770 break; 5771 } 5772 case NEW_PICTURE_MSG_ID: { 5773 WebSettings settings = mWebViewCore.getSettings(); 5774 // called for new content 5775 final int viewWidth = getViewWidth(); 5776 final WebViewCore.DrawData draw = 5777 (WebViewCore.DrawData) msg.obj; 5778 final Point viewSize = draw.mViewPoint; 5779 boolean useWideViewport = settings.getUseWideViewPort(); 5780 WebViewCore.RestoreState restoreState = draw.mRestoreState; 5781 boolean hasRestoreState = restoreState != null; 5782 if (hasRestoreState) { 5783 mInZoomOverview = false; 5784 updateZoomRange(restoreState, viewSize.x, 5785 draw.mMinPrefWidth, true); 5786 if (mInitialScaleInPercent > 0) { 5787 setNewZoomScale(mInitialScaleInPercent / 100.0f, 5788 mInitialScaleInPercent != mTextWrapScale * 100, 5789 false); 5790 } else if (restoreState.mViewScale > 0) { 5791 mTextWrapScale = restoreState.mTextWrapScale; 5792 setNewZoomScale(restoreState.mViewScale, false, 5793 false); 5794 } else { 5795 mInZoomOverview = useWideViewport 5796 && settings.getLoadWithOverviewMode(); 5797 float scale; 5798 if (mInZoomOverview) { 5799 scale = (float) viewWidth 5800 / DEFAULT_VIEWPORT_WIDTH; 5801 } else { 5802 scale = restoreState.mTextWrapScale; 5803 } 5804 setNewZoomScale(scale, Math.abs(scale 5805 - mTextWrapScale) >= 0.01f, false); 5806 } 5807 setContentScrollTo(restoreState.mScrollX, 5808 restoreState.mScrollY); 5809 // As we are on a new page, remove the WebTextView. This 5810 // is necessary for page loads driven by webkit, and in 5811 // particular when the user was on a password field, so 5812 // the WebTextView was visible. 5813 clearTextEntry(); 5814 // update the zoom buttons as the scale can be changed 5815 if (getSettings().getBuiltInZoomControls()) { 5816 updateZoomButtonsEnabled(); 5817 } 5818 } 5819 // We update the layout (i.e. request a layout from the 5820 // view system) if the last view size that we sent to 5821 // WebCore matches the view size of the picture we just 5822 // received in the fixed dimension. 5823 final boolean updateLayout = viewSize.x == mLastWidthSent 5824 && viewSize.y == mLastHeightSent; 5825 recordNewContentSize(draw.mWidthHeight.x, 5826 draw.mWidthHeight.y 5827 + (mFindIsUp ? mFindHeight : 0), updateLayout); 5828 if (DebugFlags.WEB_VIEW) { 5829 Rect b = draw.mInvalRegion.getBounds(); 5830 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 5831 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 5832 } 5833 invalidateContentRect(draw.mInvalRegion.getBounds()); 5834 if (mPictureListener != null) { 5835 mPictureListener.onNewPicture(WebView.this, capturePicture()); 5836 } 5837 if (useWideViewport) { 5838 // limit mZoomOverviewWidth upper bound to 5839 // sMaxViewportWidth so that if the page doesn't behave 5840 // well, the WebView won't go insane. limit the lower 5841 // bound to match the default scale for mobile sites. 5842 mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math 5843 .max((int) (viewWidth / mDefaultScale), Math 5844 .max(draw.mMinPrefWidth, 5845 draw.mViewPoint.x))); 5846 } 5847 if (!mMinZoomScaleFixed) { 5848 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 5849 } 5850 if (!mDrawHistory && mInZoomOverview) { 5851 // fit the content width to the current view. Ignore 5852 // the rounding error case. 5853 if (Math.abs((viewWidth * mInvActualScale) 5854 - mZoomOverviewWidth) > 1) { 5855 setNewZoomScale((float) viewWidth 5856 / mZoomOverviewWidth, Math.abs(mActualScale 5857 - mTextWrapScale) < 0.01f, false); 5858 } 5859 } 5860 if (draw.mFocusSizeChanged && inEditingMode()) { 5861 mFocusSizeChanged = true; 5862 } 5863 if (hasRestoreState) { 5864 mViewManager.postReadyToDrawAll(); 5865 } 5866 break; 5867 } 5868 case WEBCORE_INITIALIZED_MSG_ID: 5869 // nativeCreate sets mNativeClass to a non-zero value 5870 nativeCreate(msg.arg1); 5871 break; 5872 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 5873 // Make sure that the textfield is currently focused 5874 // and representing the same node as the pointer. 5875 if (inEditingMode() && 5876 mWebTextView.isSameTextField(msg.arg1)) { 5877 if (msg.getData().getBoolean("password")) { 5878 Spannable text = (Spannable) mWebTextView.getText(); 5879 int start = Selection.getSelectionStart(text); 5880 int end = Selection.getSelectionEnd(text); 5881 mWebTextView.setInPassword(true); 5882 // Restore the selection, which may have been 5883 // ruined by setInPassword. 5884 Spannable pword = 5885 (Spannable) mWebTextView.getText(); 5886 Selection.setSelection(pword, start, end); 5887 // If the text entry has created more events, ignore 5888 // this one. 5889 } else if (msg.arg2 == mTextGeneration) { 5890 mWebTextView.setTextAndKeepSelection( 5891 (String) msg.obj); 5892 } 5893 } 5894 break; 5895 case UPDATE_TEXT_SELECTION_MSG_ID: 5896 // If no textfield was in focus, and the user touched one, 5897 // causing it to send this message, then WebTextView has not 5898 // been set up yet. Rebuild it so it can set its selection. 5899 rebuildWebTextView(); 5900 if (inEditingMode() 5901 && mWebTextView.isSameTextField(msg.arg1) 5902 && msg.arg2 == mTextGeneration) { 5903 WebViewCore.TextSelectionData tData 5904 = (WebViewCore.TextSelectionData) msg.obj; 5905 mWebTextView.setSelectionFromWebKit(tData.mStart, 5906 tData.mEnd); 5907 } 5908 break; 5909 case RETURN_LABEL: 5910 if (inEditingMode() 5911 && mWebTextView.isSameTextField(msg.arg1)) { 5912 mWebTextView.setHint((String) msg.obj); 5913 InputMethodManager imm 5914 = InputMethodManager.peekInstance(); 5915 // The hint is propagated to the IME in 5916 // onCreateInputConnection. If the IME is already 5917 // active, restart it so that its hint text is updated. 5918 if (imm != null && imm.isActive(mWebTextView)) { 5919 imm.restartInput(mWebTextView); 5920 } 5921 } 5922 break; 5923 case MOVE_OUT_OF_PLUGIN: 5924 navHandledKey(msg.arg1, 1, false, 0, true); 5925 break; 5926 case UPDATE_TEXT_ENTRY_MSG_ID: 5927 // this is sent after finishing resize in WebViewCore. Make 5928 // sure the text edit box is still on the screen. 5929 if (inEditingMode() && nativeCursorIsTextInput()) { 5930 mWebTextView.bringIntoView(); 5931 rebuildWebTextView(); 5932 } 5933 break; 5934 case CLEAR_TEXT_ENTRY: 5935 clearTextEntry(); 5936 break; 5937 case INVAL_RECT_MSG_ID: { 5938 Rect r = (Rect)msg.obj; 5939 if (r == null) { 5940 invalidate(); 5941 } else { 5942 // we need to scale r from content into view coords, 5943 // which viewInvalidate() does for us 5944 viewInvalidate(r.left, r.top, r.right, r.bottom); 5945 } 5946 break; 5947 } 5948 case IMMEDIATE_REPAINT_MSG_ID: { 5949 invalidate(); 5950 break; 5951 } 5952 case SET_ROOT_LAYER_MSG_ID: { 5953 int oldLayer = mRootLayer; 5954 mRootLayer = msg.arg1; 5955 if (oldLayer > 0) { 5956 nativeDestroyLayer(oldLayer); 5957 } 5958 invalidate(); 5959 break; 5960 } 5961 case REQUEST_FORM_DATA: 5962 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 5963 if (mWebTextView.isSameTextField(msg.arg1)) { 5964 mWebTextView.setAdapterCustom(adapter); 5965 } 5966 break; 5967 case RESUME_WEBCORE_PRIORITY: 5968 WebViewCore.resumePriority(); 5969 break; 5970 5971 case LONG_PRESS_CENTER: 5972 // as this is shared by keydown and trackballdown, reset all 5973 // the states 5974 mGotCenterDown = false; 5975 mTrackballDown = false; 5976 performLongClick(); 5977 break; 5978 5979 case WEBCORE_NEED_TOUCH_EVENTS: 5980 mForwardTouchEvents = (msg.arg1 != 0); 5981 break; 5982 5983 case PREVENT_TOUCH_ID: 5984 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 5985 // dont override if mPreventDrag has been set to no due 5986 // to time out 5987 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5988 mPreventDrag = (msg.arg2 & TOUCH_PREVENT_DRAG) 5989 == TOUCH_PREVENT_DRAG ? PREVENT_DRAG_YES 5990 : PREVENT_DRAG_NO; 5991 if (mPreventDrag == PREVENT_DRAG_YES) { 5992 mTouchMode = TOUCH_DONE_MODE; 5993 } else { 5994 mPreventLongPress = 5995 (msg.arg2 & TOUCH_PREVENT_LONGPRESS) 5996 == TOUCH_PREVENT_LONGPRESS; 5997 mPreventDoubleTap = 5998 (msg.arg2 & TOUCH_PREVENT_DOUBLETAP) 5999 == TOUCH_PREVENT_DOUBLETAP; 6000 } 6001 } 6002 } 6003 break; 6004 6005 case REQUEST_KEYBOARD: 6006 if (msg.arg1 == 0) { 6007 hideSoftKeyboard(); 6008 } else { 6009 displaySoftKeyboard(1 == msg.arg2); 6010 } 6011 break; 6012 6013 case FIND_AGAIN: 6014 // Ignore if find has been dismissed. 6015 if (mFindIsUp) { 6016 findAll(mLastFind); 6017 } 6018 break; 6019 6020 case DRAG_HELD_MOTIONLESS: 6021 mHeldMotionless = MOTIONLESS_TRUE; 6022 invalidate(); 6023 // fall through to keep scrollbars awake 6024 6025 case AWAKEN_SCROLL_BARS: 6026 if (mTouchMode == TOUCH_DRAG_MODE 6027 && mHeldMotionless == MOTIONLESS_TRUE) { 6028 awakenScrollBars(ViewConfiguration 6029 .getScrollDefaultDelay(), false); 6030 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6031 .obtainMessage(AWAKEN_SCROLL_BARS), 6032 ViewConfiguration.getScrollDefaultDelay()); 6033 } 6034 break; 6035 6036 case DO_MOTION_UP: 6037 doMotionUp(msg.arg1, msg.arg2); 6038 break; 6039 6040 case SHOW_FULLSCREEN: { 6041 WebViewCore.PluginFullScreenData data 6042 = (WebViewCore.PluginFullScreenData) msg.obj; 6043 if (data.mNpp != 0 && data.mView != null) { 6044 if (mFullScreenHolder != null) { 6045 Log.w(LOGTAG, 6046 "Should not have another full screen."); 6047 mFullScreenHolder.dismiss(); 6048 } 6049 mFullScreenHolder = new PluginFullScreenHolder( 6050 WebView.this, data.mNpp); 6051 // as we are sharing the View between full screen and 6052 // embedded mode, we have to remove the 6053 // AbsoluteLayout.LayoutParams set by embedded mode to 6054 // ViewGroup.LayoutParams before adding it to the dialog 6055 data.mView.setLayoutParams(new ViewGroup.LayoutParams( 6056 ViewGroup.LayoutParams.FILL_PARENT, 6057 ViewGroup.LayoutParams.FILL_PARENT)); 6058 mFullScreenHolder.setContentView(data.mView); 6059 mFullScreenHolder.setCancelable(false); 6060 mFullScreenHolder.setCanceledOnTouchOutside(false); 6061 mFullScreenHolder.show(); 6062 } else if (mFullScreenHolder == null) { 6063 // this may happen if user dismisses the fullscreen and 6064 // then the WebCore re-position message finally reached 6065 // the UI thread. 6066 break; 6067 } 6068 // move the matching embedded view fully into the view so 6069 // that touch will be valid instead of rejected due to out 6070 // of the visible bounds 6071 // TODO: do we need to preserve the original position and 6072 // scale so that we can revert it when leaving the full 6073 // screen mode? 6074 int x = contentToViewX(data.mDocX); 6075 int y = contentToViewY(data.mDocY); 6076 int width = contentToViewDimension(data.mDocWidth); 6077 int height = contentToViewDimension(data.mDocHeight); 6078 int viewWidth = getViewWidth(); 6079 int viewHeight = getViewHeight(); 6080 int newX = mScrollX; 6081 int newY = mScrollY; 6082 if (x < mScrollX) { 6083 newX = x + (width > viewWidth 6084 ? (width - viewWidth) / 2 : 0); 6085 } else if (x + width > mScrollX + viewWidth) { 6086 newX = x + width - viewWidth - (width > viewWidth 6087 ? (width - viewWidth) / 2 : 0); 6088 } 6089 if (y < mScrollY) { 6090 newY = y + (height > viewHeight 6091 ? (height - viewHeight) / 2 : 0); 6092 } else if (y + height > mScrollY + viewHeight) { 6093 newY = y + height - viewHeight - (height > viewHeight 6094 ? (height - viewHeight) / 2 : 0); 6095 } 6096 scrollTo(newX, newY); 6097 if (width > viewWidth || height > viewHeight) { 6098 mZoomCenterX = viewWidth * .5f; 6099 mZoomCenterY = viewHeight * .5f; 6100 // do not change text wrap scale so that there is no 6101 // reflow 6102 setNewZoomScale(mActualScale 6103 / Math.max((float) width / viewWidth, 6104 (float) height / viewHeight), false, 6105 false); 6106 } 6107 // Now update the bound 6108 mFullScreenHolder.updateBound(contentToViewX(data.mDocX) 6109 - mScrollX, contentToViewY(data.mDocY) - mScrollY, 6110 contentToViewDimension(data.mDocWidth), 6111 contentToViewDimension(data.mDocHeight)); 6112 } 6113 break; 6114 6115 case HIDE_FULLSCREEN: 6116 if (mFullScreenHolder != null) { 6117 mFullScreenHolder.dismiss(); 6118 mFullScreenHolder = null; 6119 } 6120 break; 6121 6122 case DOM_FOCUS_CHANGED: 6123 if (inEditingMode()) { 6124 nativeClearCursor(); 6125 rebuildWebTextView(); 6126 } 6127 break; 6128 6129 case SHOW_RECT_MSG_ID: { 6130 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6131 int x = mScrollX; 6132 int left = contentToViewX(data.mLeft); 6133 int width = contentToViewDimension(data.mWidth); 6134 int maxWidth = contentToViewDimension(data.mContentWidth); 6135 int viewWidth = getViewWidth(); 6136 if (width < viewWidth) { 6137 // center align 6138 x += left + width / 2 - mScrollX - viewWidth / 2; 6139 } else { 6140 x += (int) (left + data.mXPercentInDoc * width 6141 - mScrollX - data.mXPercentInView * viewWidth); 6142 } 6143 if (DebugFlags.WEB_VIEW) { 6144 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6145 width + ",maxWidth=" + maxWidth + 6146 ",viewWidth=" + viewWidth + ",x=" 6147 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6148 ",xPercentInView=" + data.mXPercentInView+ ")"); 6149 } 6150 // use the passing content width to cap x as the current 6151 // mContentWidth may not be updated yet 6152 x = Math.max(0, 6153 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6154 int top = contentToViewY(data.mTop); 6155 int height = contentToViewDimension(data.mHeight); 6156 int maxHeight = contentToViewDimension(data.mContentHeight); 6157 int viewHeight = getViewHeight(); 6158 int y = (int) (top + data.mYPercentInDoc * height - 6159 data.mYPercentInView * viewHeight); 6160 if (DebugFlags.WEB_VIEW) { 6161 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6162 height + ",maxHeight=" + maxHeight + 6163 ",viewHeight=" + viewHeight + ",y=" 6164 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6165 ",yPercentInView=" + data.mYPercentInView+ ")"); 6166 } 6167 // use the passing content height to cap y as the current 6168 // mContentHeight may not be updated yet 6169 y = Math.max(0, 6170 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6171 // We need to take into account the visible title height 6172 // when scrolling since y is an absolute view position. 6173 y = Math.max(0, y - getVisibleTitleHeight()); 6174 scrollTo(x, y); 6175 } 6176 break; 6177 6178 default: 6179 super.handleMessage(msg); 6180 break; 6181 } 6182 } 6183 } 6184 6185 // Class used to use a dropdown for a <select> element 6186 private class InvokeListBox implements Runnable { 6187 // Whether the listbox allows multiple selection. 6188 private boolean mMultiple; 6189 // Passed in to a list with multiple selection to tell 6190 // which items are selected. 6191 private int[] mSelectedArray; 6192 // Passed in to a list with single selection to tell 6193 // where the initial selection is. 6194 private int mSelection; 6195 6196 private Container[] mContainers; 6197 6198 // Need these to provide stable ids to my ArrayAdapter, 6199 // which normally does not have stable ids. (Bug 1250098) 6200 private class Container extends Object { 6201 /** 6202 * Possible values for mEnabled. Keep in sync with OptionStatus in 6203 * WebViewCore.cpp 6204 */ 6205 final static int OPTGROUP = -1; 6206 final static int OPTION_DISABLED = 0; 6207 final static int OPTION_ENABLED = 1; 6208 6209 String mString; 6210 int mEnabled; 6211 int mId; 6212 6213 public String toString() { 6214 return mString; 6215 } 6216 } 6217 6218 /** 6219 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6220 * and allow filtering. 6221 */ 6222 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6223 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6224 super(context, 6225 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6226 com.android.internal.R.layout.select_dialog_singlechoice, 6227 objects); 6228 } 6229 6230 @Override 6231 public View getView(int position, View convertView, 6232 ViewGroup parent) { 6233 // Always pass in null so that we will get a new CheckedTextView 6234 // Otherwise, an item which was previously used as an <optgroup> 6235 // element (i.e. has no check), could get used as an <option> 6236 // element, which needs a checkbox/radio, but it would not have 6237 // one. 6238 convertView = super.getView(position, null, parent); 6239 Container c = item(position); 6240 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6241 // ListView does not draw dividers between disabled and 6242 // enabled elements. Use a LinearLayout to provide dividers 6243 LinearLayout layout = new LinearLayout(mContext); 6244 layout.setOrientation(LinearLayout.VERTICAL); 6245 if (position > 0) { 6246 View dividerTop = new View(mContext); 6247 dividerTop.setBackgroundResource( 6248 android.R.drawable.divider_horizontal_bright); 6249 layout.addView(dividerTop); 6250 } 6251 6252 if (Container.OPTGROUP == c.mEnabled) { 6253 // Currently select_dialog_multichoice and 6254 // select_dialog_singlechoice are CheckedTextViews. If 6255 // that changes, the class cast will no longer be valid. 6256 Assert.assertTrue( 6257 convertView instanceof CheckedTextView); 6258 ((CheckedTextView) convertView).setCheckMarkDrawable( 6259 null); 6260 } else { 6261 // c.mEnabled == Container.OPTION_DISABLED 6262 // Draw the disabled element in a disabled state. 6263 convertView.setEnabled(false); 6264 } 6265 6266 layout.addView(convertView); 6267 if (position < getCount() - 1) { 6268 View dividerBottom = new View(mContext); 6269 dividerBottom.setBackgroundResource( 6270 android.R.drawable.divider_horizontal_bright); 6271 layout.addView(dividerBottom); 6272 } 6273 return layout; 6274 } 6275 return convertView; 6276 } 6277 6278 @Override 6279 public boolean hasStableIds() { 6280 // AdapterView's onChanged method uses this to determine whether 6281 // to restore the old state. Return false so that the old (out 6282 // of date) state does not replace the new, valid state. 6283 return false; 6284 } 6285 6286 private Container item(int position) { 6287 if (position < 0 || position >= getCount()) { 6288 return null; 6289 } 6290 return (Container) getItem(position); 6291 } 6292 6293 @Override 6294 public long getItemId(int position) { 6295 Container item = item(position); 6296 if (item == null) { 6297 return -1; 6298 } 6299 return item.mId; 6300 } 6301 6302 @Override 6303 public boolean areAllItemsEnabled() { 6304 return false; 6305 } 6306 6307 @Override 6308 public boolean isEnabled(int position) { 6309 Container item = item(position); 6310 if (item == null) { 6311 return false; 6312 } 6313 return Container.OPTION_ENABLED == item.mEnabled; 6314 } 6315 } 6316 6317 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 6318 mMultiple = true; 6319 mSelectedArray = selected; 6320 6321 int length = array.length; 6322 mContainers = new Container[length]; 6323 for (int i = 0; i < length; i++) { 6324 mContainers[i] = new Container(); 6325 mContainers[i].mString = array[i]; 6326 mContainers[i].mEnabled = enabled[i]; 6327 mContainers[i].mId = i; 6328 } 6329 } 6330 6331 private InvokeListBox(String[] array, int[] enabled, int selection) { 6332 mSelection = selection; 6333 mMultiple = false; 6334 6335 int length = array.length; 6336 mContainers = new Container[length]; 6337 for (int i = 0; i < length; i++) { 6338 mContainers[i] = new Container(); 6339 mContainers[i].mString = array[i]; 6340 mContainers[i].mEnabled = enabled[i]; 6341 mContainers[i].mId = i; 6342 } 6343 } 6344 6345 /* 6346 * Whenever the data set changes due to filtering, this class ensures 6347 * that the checked item remains checked. 6348 */ 6349 private class SingleDataSetObserver extends DataSetObserver { 6350 private long mCheckedId; 6351 private ListView mListView; 6352 private Adapter mAdapter; 6353 6354 /* 6355 * Create a new observer. 6356 * @param id The ID of the item to keep checked. 6357 * @param l ListView for getting and clearing the checked states 6358 * @param a Adapter for getting the IDs 6359 */ 6360 public SingleDataSetObserver(long id, ListView l, Adapter a) { 6361 mCheckedId = id; 6362 mListView = l; 6363 mAdapter = a; 6364 } 6365 6366 public void onChanged() { 6367 // The filter may have changed which item is checked. Find the 6368 // item that the ListView thinks is checked. 6369 int position = mListView.getCheckedItemPosition(); 6370 long id = mAdapter.getItemId(position); 6371 if (mCheckedId != id) { 6372 // Clear the ListView's idea of the checked item, since 6373 // it is incorrect 6374 mListView.clearChoices(); 6375 // Search for mCheckedId. If it is in the filtered list, 6376 // mark it as checked 6377 int count = mAdapter.getCount(); 6378 for (int i = 0; i < count; i++) { 6379 if (mAdapter.getItemId(i) == mCheckedId) { 6380 mListView.setItemChecked(i, true); 6381 break; 6382 } 6383 } 6384 } 6385 } 6386 6387 public void onInvalidate() {} 6388 } 6389 6390 public void run() { 6391 final ListView listView = (ListView) LayoutInflater.from(mContext) 6392 .inflate(com.android.internal.R.layout.select_dialog, null); 6393 final MyArrayListAdapter adapter = new 6394 MyArrayListAdapter(mContext, mContainers, mMultiple); 6395 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 6396 .setView(listView).setCancelable(true) 6397 .setInverseBackgroundForced(true); 6398 6399 if (mMultiple) { 6400 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 6401 public void onClick(DialogInterface dialog, int which) { 6402 mWebViewCore.sendMessage( 6403 EventHub.LISTBOX_CHOICES, 6404 adapter.getCount(), 0, 6405 listView.getCheckedItemPositions()); 6406 }}); 6407 b.setNegativeButton(android.R.string.cancel, 6408 new DialogInterface.OnClickListener() { 6409 public void onClick(DialogInterface dialog, int which) { 6410 mWebViewCore.sendMessage( 6411 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6412 }}); 6413 } 6414 final AlertDialog dialog = b.create(); 6415 listView.setAdapter(adapter); 6416 listView.setFocusableInTouchMode(true); 6417 // There is a bug (1250103) where the checks in a ListView with 6418 // multiple items selected are associated with the positions, not 6419 // the ids, so the items do not properly retain their checks when 6420 // filtered. Do not allow filtering on multiple lists until 6421 // that bug is fixed. 6422 6423 listView.setTextFilterEnabled(!mMultiple); 6424 if (mMultiple) { 6425 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 6426 int length = mSelectedArray.length; 6427 for (int i = 0; i < length; i++) { 6428 listView.setItemChecked(mSelectedArray[i], true); 6429 } 6430 } else { 6431 listView.setOnItemClickListener(new OnItemClickListener() { 6432 public void onItemClick(AdapterView parent, View v, 6433 int position, long id) { 6434 mWebViewCore.sendMessage( 6435 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 6436 dialog.dismiss(); 6437 } 6438 }); 6439 if (mSelection != -1) { 6440 listView.setSelection(mSelection); 6441 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 6442 listView.setItemChecked(mSelection, true); 6443 DataSetObserver observer = new SingleDataSetObserver( 6444 adapter.getItemId(mSelection), listView, adapter); 6445 adapter.registerDataSetObserver(observer); 6446 } 6447 } 6448 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 6449 public void onCancel(DialogInterface dialog) { 6450 mWebViewCore.sendMessage( 6451 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6452 } 6453 }); 6454 dialog.show(); 6455 } 6456 } 6457 6458 /* 6459 * Request a dropdown menu for a listbox with multiple selection. 6460 * 6461 * @param array Labels for the listbox. 6462 * @param enabledArray State for each element in the list. See static 6463 * integers in Container class. 6464 * @param selectedArray Which positions are initally selected. 6465 */ 6466 void requestListBox(String[] array, int[] enabledArray, int[] 6467 selectedArray) { 6468 mPrivateHandler.post( 6469 new InvokeListBox(array, enabledArray, selectedArray)); 6470 } 6471 6472 private void updateZoomRange(WebViewCore.RestoreState restoreState, 6473 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 6474 if (restoreState.mMinScale == 0) { 6475 if (restoreState.mMobileSite) { 6476 if (minPrefWidth > Math.max(0, viewWidth)) { 6477 mMinZoomScale = (float) viewWidth / minPrefWidth; 6478 mMinZoomScaleFixed = false; 6479 if (updateZoomOverview) { 6480 WebSettings settings = getSettings(); 6481 mInZoomOverview = settings.getUseWideViewPort() && 6482 settings.getLoadWithOverviewMode(); 6483 } 6484 } else { 6485 mMinZoomScale = restoreState.mDefaultScale; 6486 mMinZoomScaleFixed = true; 6487 } 6488 } else { 6489 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 6490 mMinZoomScaleFixed = false; 6491 } 6492 } else { 6493 mMinZoomScale = restoreState.mMinScale; 6494 mMinZoomScaleFixed = true; 6495 } 6496 if (restoreState.mMaxScale == 0) { 6497 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 6498 } else { 6499 mMaxZoomScale = restoreState.mMaxScale; 6500 } 6501 } 6502 6503 /* 6504 * Request a dropdown menu for a listbox with single selection or a single 6505 * <select> element. 6506 * 6507 * @param array Labels for the listbox. 6508 * @param enabledArray State for each element in the list. See static 6509 * integers in Container class. 6510 * @param selection Which position is initally selected. 6511 */ 6512 void requestListBox(String[] array, int[] enabledArray, int selection) { 6513 mPrivateHandler.post( 6514 new InvokeListBox(array, enabledArray, selection)); 6515 } 6516 6517 // called by JNI 6518 private void sendMoveFocus(int frame, int node) { 6519 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 6520 new WebViewCore.CursorData(frame, node, 0, 0)); 6521 } 6522 6523 // called by JNI 6524 private void sendMoveMouse(int frame, int node, int x, int y) { 6525 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 6526 new WebViewCore.CursorData(frame, node, x, y)); 6527 } 6528 6529 /* 6530 * Send a mouse move event to the webcore thread. 6531 * 6532 * @param removeFocus Pass true if the "mouse" cursor is now over a node 6533 * which wants key events, but it is not the focus. This 6534 * will make the visual appear as though nothing is in 6535 * focus. Remove the WebTextView, if present, and stop 6536 * drawing the blinking caret. 6537 * called by JNI 6538 */ 6539 private void sendMoveMouseIfLatest(boolean removeFocus) { 6540 if (removeFocus) { 6541 clearTextEntry(); 6542 setFocusControllerInactive(); 6543 } 6544 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 6545 cursorData()); 6546 } 6547 6548 // called by JNI 6549 private void sendMotionUp(int touchGeneration, 6550 int frame, int node, int x, int y) { 6551 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6552 touchUpData.mMoveGeneration = touchGeneration; 6553 touchUpData.mFrame = frame; 6554 touchUpData.mNode = node; 6555 touchUpData.mX = x; 6556 touchUpData.mY = y; 6557 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6558 } 6559 6560 6561 private int getScaledMaxXScroll() { 6562 int width; 6563 if (mHeightCanMeasure == false) { 6564 width = getViewWidth() / 4; 6565 } else { 6566 Rect visRect = new Rect(); 6567 calcOurVisibleRect(visRect); 6568 width = visRect.width() / 2; 6569 } 6570 // FIXME the divisor should be retrieved from somewhere 6571 return viewToContentX(width); 6572 } 6573 6574 private int getScaledMaxYScroll() { 6575 int height; 6576 if (mHeightCanMeasure == false) { 6577 height = getViewHeight() / 4; 6578 } else { 6579 Rect visRect = new Rect(); 6580 calcOurVisibleRect(visRect); 6581 height = visRect.height() / 2; 6582 } 6583 // FIXME the divisor should be retrieved from somewhere 6584 // the closest thing today is hard-coded into ScrollView.java 6585 // (from ScrollView.java, line 363) int maxJump = height/2; 6586 return Math.round(height * mInvActualScale); 6587 } 6588 6589 /** 6590 * Called by JNI to invalidate view 6591 */ 6592 private void viewInvalidate() { 6593 invalidate(); 6594 } 6595 6596 // return true if the key was handled 6597 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 6598 long time, boolean ignorePlugin) { 6599 if (mNativeClass == 0) { 6600 return false; 6601 } 6602 if (ignorePlugin == false && nativeFocusIsPlugin()) { 6603 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 6604 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 6605 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 6606 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 6607 , 0, 0, 0); 6608 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 6609 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 6610 return true; 6611 } 6612 mLastCursorTime = time; 6613 mLastCursorBounds = nativeGetCursorRingBounds(); 6614 boolean keyHandled 6615 = nativeMoveCursor(keyCode, count, noScroll) == false; 6616 if (DebugFlags.WEB_VIEW) { 6617 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 6618 + " mLastCursorTime=" + mLastCursorTime 6619 + " handled=" + keyHandled); 6620 } 6621 if (keyHandled == false || mHeightCanMeasure == false) { 6622 return keyHandled; 6623 } 6624 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 6625 if (contentCursorRingBounds.isEmpty()) return keyHandled; 6626 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 6627 Rect visRect = new Rect(); 6628 calcOurVisibleRect(visRect); 6629 Rect outset = new Rect(visRect); 6630 int maxXScroll = visRect.width() / 2; 6631 int maxYScroll = visRect.height() / 2; 6632 outset.inset(-maxXScroll, -maxYScroll); 6633 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 6634 return keyHandled; 6635 } 6636 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 6637 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 6638 maxXScroll); 6639 if (maxH > 0) { 6640 pinScrollBy(maxH, 0, true, 0); 6641 } else { 6642 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 6643 -maxXScroll); 6644 if (maxH < 0) { 6645 pinScrollBy(maxH, 0, true, 0); 6646 } 6647 } 6648 if (mLastCursorBounds.isEmpty()) return keyHandled; 6649 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 6650 return keyHandled; 6651 } 6652 if (DebugFlags.WEB_VIEW) { 6653 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 6654 + contentCursorRingBounds); 6655 } 6656 requestRectangleOnScreen(viewCursorRingBounds); 6657 mUserScroll = true; 6658 return keyHandled; 6659 } 6660 6661 /** 6662 * Set the background color. It's white by default. Pass 6663 * zero to make the view transparent. 6664 * @param color the ARGB color described by Color.java 6665 */ 6666 public void setBackgroundColor(int color) { 6667 mBackgroundColor = color; 6668 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 6669 } 6670 6671 public void debugDump() { 6672 nativeDebugDump(); 6673 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 6674 } 6675 6676 /** 6677 * Draw the HTML page into the specified canvas. This call ignores any 6678 * view-specific zoom, scroll offset, or other changes. It does not draw 6679 * any view-specific chrome, such as progress or URL bars. 6680 * 6681 * @hide only needs to be accessible to Browser and testing 6682 */ 6683 public void drawPage(Canvas canvas) { 6684 mWebViewCore.drawContentPicture(canvas, 0, false, false); 6685 } 6686 6687 /** 6688 * Set the time to wait between passing touches to WebCore. See also the 6689 * TOUCH_SENT_INTERVAL member for further discussion. 6690 * 6691 * @hide This is only used by the DRT test application. 6692 */ 6693 public void setTouchInterval(int interval) { 6694 mCurrentTouchInterval = interval; 6695 } 6696 6697 /** 6698 * Update our cache with updatedText. 6699 * @param updatedText The new text to put in our cache. 6700 */ 6701 /* package */ void updateCachedTextfield(String updatedText) { 6702 // Also place our generation number so that when we look at the cache 6703 // we recognize that it is up to date. 6704 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 6705 } 6706 6707 private native int nativeCacheHitFramePointer(); 6708 private native Rect nativeCacheHitNodeBounds(); 6709 private native int nativeCacheHitNodePointer(); 6710 /* package */ native void nativeClearCursor(); 6711 private native void nativeCreate(int ptr); 6712 private native int nativeCursorFramePointer(); 6713 private native Rect nativeCursorNodeBounds(); 6714 private native int nativeCursorNodePointer(); 6715 /* package */ native boolean nativeCursorMatchesFocus(); 6716 private native boolean nativeCursorIntersects(Rect visibleRect); 6717 private native boolean nativeCursorIsAnchor(); 6718 private native boolean nativeCursorIsTextInput(); 6719 private native Point nativeCursorPosition(); 6720 private native String nativeCursorText(); 6721 /** 6722 * Returns true if the native cursor node says it wants to handle key events 6723 * (ala plugins). This can only be called if mNativeClass is non-zero! 6724 */ 6725 private native boolean nativeCursorWantsKeyEvents(); 6726 private native void nativeDebugDump(); 6727 private native void nativeDestroy(); 6728 private native void nativeDrawCursorRing(Canvas content); 6729 private native void nativeDestroyLayer(int layer); 6730 private native boolean nativeEvaluateLayersAnimations(int layer); 6731 private native void nativeDrawLayers(int layer, 6732 int scrollX, int scrollY, 6733 int width, int height, 6734 float scale, Canvas canvas); 6735 private native void nativeDrawMatches(Canvas canvas); 6736 private native void nativeDrawSelectionPointer(Canvas content, 6737 float scale, int x, int y, boolean extendSelection); 6738 private native void nativeDrawSelectionRegion(Canvas content); 6739 private native void nativeDumpDisplayTree(String urlOrNull); 6740 private native int nativeFindAll(String findLower, String findUpper); 6741 private native void nativeFindNext(boolean forward); 6742 /* package */ native int nativeFocusCandidateFramePointer(); 6743 private native boolean nativeFocusCandidateIsPassword(); 6744 private native boolean nativeFocusCandidateIsRtlText(); 6745 private native boolean nativeFocusCandidateIsTextInput(); 6746 /* package */ native int nativeFocusCandidateMaxLength(); 6747 /* package */ native String nativeFocusCandidateName(); 6748 private native Rect nativeFocusCandidateNodeBounds(); 6749 private native int nativeFocusCandidatePointer(); 6750 private native String nativeFocusCandidateText(); 6751 private native int nativeFocusCandidateTextSize(); 6752 /** 6753 * Returns an integer corresponding to WebView.cpp::type. 6754 * See WebTextView.setType() 6755 */ 6756 private native int nativeFocusCandidateType(); 6757 private native boolean nativeFocusIsPlugin(); 6758 /* package */ native int nativeFocusNodePointer(); 6759 private native Rect nativeGetCursorRingBounds(); 6760 private native String nativeGetSelection(); 6761 private native boolean nativeHasCursorNode(); 6762 private native boolean nativeHasFocusNode(); 6763 private native void nativeHideCursor(); 6764 private native String nativeImageURI(int x, int y); 6765 private native void nativeInstrumentReport(); 6766 /* package */ native void nativeMoveCursorToNextTextInput(); 6767 // return true if the page has been scrolled 6768 private native boolean nativeMotionUp(int x, int y, int slop); 6769 // returns false if it handled the key 6770 private native boolean nativeMoveCursor(int keyCode, int count, 6771 boolean noScroll); 6772 private native int nativeMoveGeneration(); 6773 private native void nativeMoveSelection(int x, int y, 6774 boolean extendSelection); 6775 private native boolean nativePointInNavCache(int x, int y, int slop); 6776 // Like many other of our native methods, you must make sure that 6777 // mNativeClass is not null before calling this method. 6778 private native void nativeRecordButtons(boolean focused, 6779 boolean pressed, boolean invalidate); 6780 private native void nativeSelectBestAt(Rect rect); 6781 private native void nativeSetFindIsUp(); 6782 private native void nativeSetFollowedLink(boolean followed); 6783 private native void nativeSetHeightCanMeasure(boolean measure); 6784 private native int nativeTextGeneration(); 6785 // Never call this version except by updateCachedTextfield(String) - 6786 // we always want to pass in our generation number. 6787 private native void nativeUpdateCachedTextfield(String updatedText, 6788 int generation); 6789 // return NO_LEFTEDGE means failure. 6790 private static final int NO_LEFTEDGE = -1; 6791 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 6792} 6793