WebView.java revision 8a7ac8db1a0a53d60de87e2d1b48d9013857ac70
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.Picture; 30import android.graphics.Point; 31import android.graphics.Rect; 32import android.graphics.drawable.Drawable; 33import android.net.http.SslCertificate; 34import android.net.Uri; 35import android.os.Bundle; 36import android.os.Handler; 37import android.os.Message; 38import android.os.ServiceManager; 39import android.os.SystemClock; 40import android.provider.Checkin; 41import android.text.IClipboard; 42import android.text.Selection; 43import android.text.Spannable; 44import android.util.AttributeSet; 45import android.util.EventLog; 46import android.util.Log; 47import android.util.TypedValue; 48import android.view.Gravity; 49import android.view.KeyEvent; 50import android.view.LayoutInflater; 51import android.view.MotionEvent; 52import android.view.ScaleGestureDetector; 53import android.view.SoundEffectConstants; 54import android.view.VelocityTracker; 55import android.view.View; 56import android.view.ViewConfiguration; 57import android.view.ViewGroup; 58import android.view.ViewTreeObserver; 59import android.view.animation.AlphaAnimation; 60import android.view.inputmethod.EditorInfo; 61import android.view.inputmethod.InputConnection; 62import android.view.inputmethod.InputMethodManager; 63import android.webkit.WebTextView.AutoCompleteAdapter; 64import android.webkit.WebViewCore.EventHub; 65import android.widget.AbsoluteLayout; 66import android.widget.Adapter; 67import android.widget.AdapterView; 68import android.widget.ArrayAdapter; 69import android.widget.CheckedTextView; 70import android.widget.FrameLayout; 71import android.widget.LinearLayout; 72import android.widget.ListView; 73import android.widget.Scroller; 74import android.widget.Toast; 75import android.widget.ZoomButtonsController; 76import android.widget.ZoomControls; 77import android.widget.AdapterView.OnItemClickListener; 78 79import java.io.File; 80import java.io.FileInputStream; 81import java.io.FileNotFoundException; 82import java.io.FileOutputStream; 83import java.io.IOException; 84import java.net.URLDecoder; 85import java.util.ArrayList; 86import java.util.List; 87import java.util.HashMap; 88import java.util.Map; 89 90import junit.framework.Assert; 91 92/** 93 * <p>A View that displays web pages. This class is the basis upon which you 94 * can roll your own web browser or simply display some online content within your Activity. 95 * It uses the WebKit rendering engine to display 96 * web pages and includes methods to navigate forward and backward 97 * through a history, zoom in and out, perform text searches and more.</p> 98 * <p>To enable the built-in zoom, set 99 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 100 * (introduced in API version 3). 101 * <p>Note that, in order for your Activity to access the Internet and load web pages 102 * in a WebView, you must add the <var>INTERNET</var> permissions to your 103 * Android Manifest file:</p> 104 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 105 * 106 * <p>This must be a child of the <code><manifest></code> element.</p> 107 * 108 * <h3>Basic usage</h3> 109 * 110 * <p>By default, a WebView provides no browser-like widgets, does not 111 * enable JavaScript and errors will be ignored. If your goal is only 112 * to display some HTML as a part of your UI, this is probably fine; 113 * the user won't need to interact with the web page beyond reading 114 * it, and the web page won't need to interact with the user. If you 115 * actually want a fully blown web browser, then you probably want to 116 * invoke the Browser application with your URL rather than show it 117 * with a WebView. See {@link android.content.Intent} for more information.</p> 118 * 119 * <pre class="prettyprint"> 120 * WebView webview = new WebView(this); 121 * setContentView(webview); 122 * 123 * // Simplest usage: note that an exception will NOT be thrown 124 * // if there is an error loading this page (see below). 125 * webview.loadUrl("http://slashdot.org/"); 126 * 127 * // Of course you can also load from any string: 128 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 129 * webview.loadData(summary, "text/html", "utf-8"); 130 * // ... although note that there are restrictions on what this HTML can do. 131 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 132 * </pre> 133 * 134 * <p>A WebView has several customization points where you can add your 135 * own behavior. These are:</p> 136 * 137 * <ul> 138 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 139 * This class is called when something that might impact a 140 * browser UI happens, for instance, progress updates and 141 * JavaScript alerts are sent here. 142 * </li> 143 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 144 * It will be called when things happen that impact the 145 * rendering of the content, eg, errors or form submissions. You 146 * can also intercept URL loading here.</li> 147 * <li>Via the {@link android.webkit.WebSettings} class, which contains 148 * miscellaneous configuration. </li> 149 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 150 * This lets you bind Java objects into the WebView so they can be 151 * controlled from the web pages JavaScript.</li> 152 * </ul> 153 * 154 * <p>Here's a more complicated example, showing error handling, 155 * settings, and progress notification:</p> 156 * 157 * <pre class="prettyprint"> 158 * // Let's display the progress in the activity title bar, like the 159 * // browser app does. 160 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 161 * 162 * webview.getSettings().setJavaScriptEnabled(true); 163 * 164 * final Activity activity = this; 165 * webview.setWebChromeClient(new WebChromeClient() { 166 * public void onProgressChanged(WebView view, int progress) { 167 * // Activities and WebViews measure progress with different scales. 168 * // The progress meter will automatically disappear when we reach 100% 169 * activity.setProgress(progress * 1000); 170 * } 171 * }); 172 * webview.setWebViewClient(new WebViewClient() { 173 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 174 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 175 * } 176 * }); 177 * 178 * webview.loadUrl("http://slashdot.org/"); 179 * </pre> 180 * 181 * <h3>Cookie and window management</h3> 182 * 183 * <p>For obvious security reasons, your application has its own 184 * cache, cookie store etc - it does not share the Browser 185 * applications data. Cookies are managed on a separate thread, so 186 * operations like index building don't block the UI 187 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 188 * if you want to use cookies in your application. 189 * </p> 190 * 191 * <p>By default, requests by the HTML to open new windows are 192 * ignored. This is true whether they be opened by JavaScript or by 193 * the target attribute on a link. You can customize your 194 * WebChromeClient to provide your own behaviour for opening multiple windows, 195 * and render them in whatever manner you want.</p> 196 * 197 * <p>Standard behavior for an Activity is to be destroyed and 198 * recreated when the devices orientation is changed. This will cause 199 * the WebView to reload the current page. If you don't want that, you 200 * can set your Activity to handle the orientation and keyboardHidden 201 * changes, and then just leave the WebView alone. It'll automatically 202 * re-orient itself as appropriate.</p> 203 */ 204public class WebView extends AbsoluteLayout 205 implements ViewTreeObserver.OnGlobalFocusChangeListener, 206 ViewGroup.OnHierarchyChangeListener { 207 208 // enable debug output for drag trackers 209 private static final boolean DEBUG_DRAG_TRACKER = false; 210 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 211 // the screen all-the-time. Good for profiling our drawing code 212 static private final boolean AUTO_REDRAW_HACK = false; 213 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 214 private boolean mAutoRedraw; 215 private int mRootLayer; // C++ pointer to the root layer 216 private boolean mLayersHaveAnimations; 217 private EvaluateLayersAnimations mEvaluateThread; 218 219 static final String LOGTAG = "webview"; 220 221 private static class ExtendedZoomControls extends FrameLayout { 222 public ExtendedZoomControls(Context context, AttributeSet attrs) { 223 super(context, attrs); 224 LayoutInflater inflater = (LayoutInflater) 225 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 226 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 227 mPlusMinusZoomControls = (ZoomControls) findViewById( 228 com.android.internal.R.id.zoomControls); 229 findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( 230 View.GONE); 231 } 232 233 public void show(boolean showZoom, boolean canZoomOut) { 234 mPlusMinusZoomControls.setVisibility( 235 showZoom ? View.VISIBLE : View.GONE); 236 fade(View.VISIBLE, 0.0f, 1.0f); 237 } 238 239 public void hide() { 240 fade(View.GONE, 1.0f, 0.0f); 241 } 242 243 private void fade(int visibility, float startAlpha, float endAlpha) { 244 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 245 anim.setDuration(500); 246 startAnimation(anim); 247 setVisibility(visibility); 248 } 249 250 public boolean hasFocus() { 251 return mPlusMinusZoomControls.hasFocus(); 252 } 253 254 public void setOnZoomInClickListener(OnClickListener listener) { 255 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 256 } 257 258 public void setOnZoomOutClickListener(OnClickListener listener) { 259 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 260 } 261 262 ZoomControls mPlusMinusZoomControls; 263 } 264 265 /** 266 * Transportation object for returning WebView across thread boundaries. 267 */ 268 public class WebViewTransport { 269 private WebView mWebview; 270 271 /** 272 * Set the WebView to the transportation object. 273 * @param webview The WebView to transport. 274 */ 275 public synchronized void setWebView(WebView webview) { 276 mWebview = webview; 277 } 278 279 /** 280 * Return the WebView object. 281 * @return WebView The transported WebView object. 282 */ 283 public synchronized WebView getWebView() { 284 return mWebview; 285 } 286 } 287 288 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 289 private final CallbackProxy mCallbackProxy; 290 291 private final WebViewDatabase mDatabase; 292 293 // SSL certificate for the main top-level page (if secure) 294 private SslCertificate mCertificate; 295 296 // Native WebView pointer that is 0 until the native object has been 297 // created. 298 private int mNativeClass; 299 // This would be final but it needs to be set to null when the WebView is 300 // destroyed. 301 private WebViewCore mWebViewCore; 302 // Handler for dispatching UI messages. 303 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 304 private WebTextView mWebTextView; 305 // Used to ignore changes to webkit text that arrives to the UI side after 306 // more key events. 307 private int mTextGeneration; 308 309 // Used by WebViewCore to create child views. 310 /* package */ final ViewManager mViewManager; 311 312 // Used to display in full screen mode 313 PluginFullScreenHolder mFullScreenHolder; 314 315 /** 316 * Position of the last touch event. 317 */ 318 private float mLastTouchX; 319 private float mLastTouchY; 320 321 /** 322 * Time of the last touch event. 323 */ 324 private long mLastTouchTime; 325 326 /** 327 * Time of the last time sending touch event to WebViewCore 328 */ 329 private long mLastSentTouchTime; 330 331 /** 332 * The minimum elapsed time before sending another ACTION_MOVE event to 333 * WebViewCore. This really should be tuned for each type of the devices. 334 * For example in Google Map api test case, it takes Dream device at least 335 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 336 * triggering the layout and drawing the picture. While the same process 337 * takes 60+ms on the current high speed device. If we make 338 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 339 * to WebViewCore queue and the real layout and draw events will be pushed 340 * to further, which slows down the refresh rate. Choose 50 to favor the 341 * current high speed devices. For Dream like devices, 100 is a better 342 * choice. Maybe make this in the buildspec later. 343 */ 344 private static final int TOUCH_SENT_INTERVAL = 50; 345 346 /** 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 static 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 private static final int EVENT_LOG_ZOOM_LEVEL_CHANGE = 70101; 625 private static final int EVENT_LOG_DOUBLE_TAP_DURATION = 70102; 626 627 // for event log 628 private long mLastTouchUpTime = 0; 629 630 /** 631 * URI scheme for telephone number 632 */ 633 public static final String SCHEME_TEL = "tel:"; 634 /** 635 * URI scheme for email address 636 */ 637 public static final String SCHEME_MAILTO = "mailto:"; 638 /** 639 * URI scheme for map address 640 */ 641 public static final String SCHEME_GEO = "geo:0,0?q="; 642 643 private int mBackgroundColor = Color.WHITE; 644 645 // Used to notify listeners of a new picture. 646 private PictureListener mPictureListener; 647 /** 648 * Interface to listen for new pictures as they change. 649 */ 650 public interface PictureListener { 651 /** 652 * Notify the listener that the picture has changed. 653 * @param view The WebView that owns the picture. 654 * @param picture The new picture. 655 */ 656 public void onNewPicture(WebView view, Picture picture); 657 } 658 659 // FIXME: Want to make this public, but need to change the API file. 660 public /*static*/ class HitTestResult { 661 /** 662 * Default HitTestResult, where the target is unknown 663 */ 664 public static final int UNKNOWN_TYPE = 0; 665 /** 666 * HitTestResult for hitting a HTML::a tag 667 */ 668 public static final int ANCHOR_TYPE = 1; 669 /** 670 * HitTestResult for hitting a phone number 671 */ 672 public static final int PHONE_TYPE = 2; 673 /** 674 * HitTestResult for hitting a map address 675 */ 676 public static final int GEO_TYPE = 3; 677 /** 678 * HitTestResult for hitting an email address 679 */ 680 public static final int EMAIL_TYPE = 4; 681 /** 682 * HitTestResult for hitting an HTML::img tag 683 */ 684 public static final int IMAGE_TYPE = 5; 685 /** 686 * HitTestResult for hitting a HTML::a tag which contains HTML::img 687 */ 688 public static final int IMAGE_ANCHOR_TYPE = 6; 689 /** 690 * HitTestResult for hitting a HTML::a tag with src=http 691 */ 692 public static final int SRC_ANCHOR_TYPE = 7; 693 /** 694 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 695 */ 696 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 697 /** 698 * HitTestResult for hitting an edit text area 699 */ 700 public static final int EDIT_TEXT_TYPE = 9; 701 702 private int mType; 703 private String mExtra; 704 705 HitTestResult() { 706 mType = UNKNOWN_TYPE; 707 } 708 709 private void setType(int type) { 710 mType = type; 711 } 712 713 private void setExtra(String extra) { 714 mExtra = extra; 715 } 716 717 public int getType() { 718 return mType; 719 } 720 721 public String getExtra() { 722 return mExtra; 723 } 724 } 725 726 // The View containing the zoom controls 727 private ExtendedZoomControls mZoomControls; 728 private Runnable mZoomControlRunnable; 729 730 private ZoomButtonsController mZoomButtonsController; 731 732 // These keep track of the center point of the zoom. They are used to 733 // determine the point around which we should zoom. 734 private float mZoomCenterX; 735 private float mZoomCenterY; 736 737 private ZoomButtonsController.OnZoomListener mZoomListener = 738 new ZoomButtonsController.OnZoomListener() { 739 740 public void onVisibilityChanged(boolean visible) { 741 if (visible) { 742 switchOutDrawHistory(); 743 // Bring back the hidden zoom controls. 744 mZoomButtonsController.getZoomControls().setVisibility( 745 View.VISIBLE); 746 updateZoomButtonsEnabled(); 747 } 748 } 749 750 public void onZoom(boolean zoomIn) { 751 if (zoomIn) { 752 zoomIn(); 753 } else { 754 zoomOut(); 755 } 756 757 updateZoomButtonsEnabled(); 758 } 759 }; 760 761 /** 762 * Construct a new WebView with a Context object. 763 * @param context A Context object used to access application assets. 764 */ 765 public WebView(Context context) { 766 this(context, null); 767 } 768 769 /** 770 * Construct a new WebView with layout parameters. 771 * @param context A Context object used to access application assets. 772 * @param attrs An AttributeSet passed to our parent. 773 */ 774 public WebView(Context context, AttributeSet attrs) { 775 this(context, attrs, com.android.internal.R.attr.webViewStyle); 776 } 777 778 /** 779 * Construct a new WebView with layout parameters and a default style. 780 * @param context A Context object used to access application assets. 781 * @param attrs An AttributeSet passed to our parent. 782 * @param defStyle The default style resource ID. 783 */ 784 public WebView(Context context, AttributeSet attrs, int defStyle) { 785 this(context, attrs, defStyle, null); 786 } 787 788 /** 789 * Construct a new WebView with layout parameters, a default style and a set 790 * of custom Javscript interfaces to be added to the WebView at initialization 791 * time. This guarantees that these interfaces will be available when the JS 792 * context is initialized. 793 * @param context A Context object used to access application assets. 794 * @param attrs An AttributeSet passed to our parent. 795 * @param defStyle The default style resource ID. 796 * @param javascriptInterfaces is a Map of intareface names, as keys, and 797 * object implementing those interfaces, as values. 798 * @hide pending API council approval. 799 */ 800 protected WebView(Context context, AttributeSet attrs, int defStyle, 801 Map<String, Object> javascriptInterfaces) { 802 super(context, attrs, defStyle); 803 init(); 804 805 mCallbackProxy = new CallbackProxy(context, this); 806 mViewManager = new ViewManager(this); 807 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 808 mDatabase = WebViewDatabase.getInstance(context); 809 mScroller = new Scroller(context); 810 811 mZoomButtonsController = new ZoomButtonsController(this); 812 mZoomButtonsController.setOnZoomListener(mZoomListener); 813 // ZoomButtonsController positions the buttons at the bottom, but in 814 // the middle. Change their layout parameters so they appear on the 815 // right. 816 View controls = mZoomButtonsController.getZoomControls(); 817 ViewGroup.LayoutParams params = controls.getLayoutParams(); 818 if (params instanceof FrameLayout.LayoutParams) { 819 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 820 params; 821 frameParams.gravity = Gravity.RIGHT; 822 } 823 updateMultiTouchSupport(context); 824 } 825 826 void updateMultiTouchSupport(Context context) { 827 WebSettings settings = getSettings(); 828 mSupportMultiTouch = context.getPackageManager().hasSystemFeature( 829 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 830 && settings.supportZoom() && settings.getBuiltInZoomControls(); 831 if (mSupportMultiTouch && (mScaleDetector == null)) { 832 mScaleDetector = new ScaleGestureDetector(context, 833 new ScaleDetectorListener()); 834 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 835 mScaleDetector = null; 836 } 837 } 838 839 private void updateZoomButtonsEnabled() { 840 boolean canZoomIn = mActualScale < mMaxZoomScale; 841 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 842 if (!canZoomIn && !canZoomOut) { 843 // Hide the zoom in and out buttons, as well as the fit to page 844 // button, if the page cannot zoom 845 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 846 } else { 847 // Set each one individually, as a page may be able to zoom in 848 // or out. 849 mZoomButtonsController.setZoomInEnabled(canZoomIn); 850 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 851 } 852 } 853 854 private void init() { 855 setWillNotDraw(false); 856 setFocusable(true); 857 setFocusableInTouchMode(true); 858 setClickable(true); 859 setLongClickable(true); 860 861 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 862 int slop = configuration.getScaledTouchSlop(); 863 mTouchSlopSquare = slop * slop; 864 mMinLockSnapReverseDistance = slop; 865 slop = configuration.getScaledDoubleTapSlop(); 866 mDoubleTapSlopSquare = slop * slop; 867 final float density = getContext().getResources().getDisplayMetrics().density; 868 // use one line height, 16 based on our current default font, for how 869 // far we allow a touch be away from the edge of a link 870 mNavSlop = (int) (16 * density); 871 // density adjusted scale factors 872 DEFAULT_SCALE_PERCENT = (int) (100 * density); 873 mDefaultScale = density; 874 mActualScale = density; 875 mInvActualScale = 1 / density; 876 mTextWrapScale = density; 877 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 878 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 879 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 880 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 881 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 882 } 883 884 /* package */void updateDefaultZoomDensity(int zoomDensity) { 885 final float density = getContext().getResources().getDisplayMetrics().density 886 * 100 / zoomDensity; 887 if (Math.abs(density - mDefaultScale) > 0.01) { 888 float scaleFactor = density / mDefaultScale; 889 // adjust the limits 890 mNavSlop = (int) (16 * density); 891 DEFAULT_SCALE_PERCENT = (int) (100 * density); 892 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 893 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 894 mDefaultScale = density; 895 mMaxZoomScale *= scaleFactor; 896 mMinZoomScale *= scaleFactor; 897 setNewZoomScale(mActualScale * scaleFactor, true, false); 898 } 899 } 900 901 /* package */ boolean onSavePassword(String schemePlusHost, String username, 902 String password, final Message resumeMsg) { 903 boolean rVal = false; 904 if (resumeMsg == null) { 905 // null resumeMsg implies saving password silently 906 mDatabase.setUsernamePassword(schemePlusHost, username, password); 907 } else { 908 final Message remember = mPrivateHandler.obtainMessage( 909 REMEMBER_PASSWORD); 910 remember.getData().putString("host", schemePlusHost); 911 remember.getData().putString("username", username); 912 remember.getData().putString("password", password); 913 remember.obj = resumeMsg; 914 915 final Message neverRemember = mPrivateHandler.obtainMessage( 916 NEVER_REMEMBER_PASSWORD); 917 neverRemember.getData().putString("host", schemePlusHost); 918 neverRemember.getData().putString("username", username); 919 neverRemember.getData().putString("password", password); 920 neverRemember.obj = resumeMsg; 921 922 new AlertDialog.Builder(getContext()) 923 .setTitle(com.android.internal.R.string.save_password_label) 924 .setMessage(com.android.internal.R.string.save_password_message) 925 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 926 new DialogInterface.OnClickListener() { 927 public void onClick(DialogInterface dialog, int which) { 928 resumeMsg.sendToTarget(); 929 } 930 }) 931 .setNeutralButton(com.android.internal.R.string.save_password_remember, 932 new DialogInterface.OnClickListener() { 933 public void onClick(DialogInterface dialog, int which) { 934 remember.sendToTarget(); 935 } 936 }) 937 .setNegativeButton(com.android.internal.R.string.save_password_never, 938 new DialogInterface.OnClickListener() { 939 public void onClick(DialogInterface dialog, int which) { 940 neverRemember.sendToTarget(); 941 } 942 }) 943 .setOnCancelListener(new OnCancelListener() { 944 public void onCancel(DialogInterface dialog) { 945 resumeMsg.sendToTarget(); 946 } 947 }).show(); 948 // Return true so that WebViewCore will pause while the dialog is 949 // up. 950 rVal = true; 951 } 952 return rVal; 953 } 954 955 @Override 956 public void setScrollBarStyle(int style) { 957 if (style == View.SCROLLBARS_INSIDE_INSET 958 || style == View.SCROLLBARS_OUTSIDE_INSET) { 959 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 960 } else { 961 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 962 } 963 super.setScrollBarStyle(style); 964 } 965 966 /** 967 * Specify whether the horizontal scrollbar has overlay style. 968 * @param overlay TRUE if horizontal scrollbar should have overlay style. 969 */ 970 public void setHorizontalScrollbarOverlay(boolean overlay) { 971 mOverlayHorizontalScrollbar = overlay; 972 } 973 974 /** 975 * Specify whether the vertical scrollbar has overlay style. 976 * @param overlay TRUE if vertical scrollbar should have overlay style. 977 */ 978 public void setVerticalScrollbarOverlay(boolean overlay) { 979 mOverlayVerticalScrollbar = overlay; 980 } 981 982 /** 983 * Return whether horizontal scrollbar has overlay style 984 * @return TRUE if horizontal scrollbar has overlay style. 985 */ 986 public boolean overlayHorizontalScrollbar() { 987 return mOverlayHorizontalScrollbar; 988 } 989 990 /** 991 * Return whether vertical scrollbar has overlay style 992 * @return TRUE if vertical scrollbar has overlay style. 993 */ 994 public boolean overlayVerticalScrollbar() { 995 return mOverlayVerticalScrollbar; 996 } 997 998 /* 999 * Return the width of the view where the content of WebView should render 1000 * to. 1001 * Note: this can be called from WebCoreThread. 1002 */ 1003 /* package */ int getViewWidth() { 1004 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1005 return getWidth(); 1006 } else { 1007 return getWidth() - getVerticalScrollbarWidth(); 1008 } 1009 } 1010 1011 /* 1012 * returns the height of the titlebarview (if any). Does not care about 1013 * scrolling 1014 */ 1015 private int getTitleHeight() { 1016 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1017 } 1018 1019 /* 1020 * Return the amount of the titlebarview (if any) that is visible 1021 */ 1022 private int getVisibleTitleHeight() { 1023 return Math.max(getTitleHeight() - mScrollY, 0); 1024 } 1025 1026 /* 1027 * Return the height of the view where the content of WebView should render 1028 * to. Note that this excludes mTitleBar, if there is one. 1029 * Note: this can be called from WebCoreThread. 1030 */ 1031 /* package */ int getViewHeight() { 1032 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1033 } 1034 1035 private int getViewHeightWithTitle() { 1036 int height = getHeight(); 1037 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1038 height -= getHorizontalScrollbarHeight(); 1039 } 1040 return height; 1041 } 1042 1043 /** 1044 * @return The SSL certificate for the main top-level page or null if 1045 * there is no certificate (the site is not secure). 1046 */ 1047 public SslCertificate getCertificate() { 1048 return mCertificate; 1049 } 1050 1051 /** 1052 * Sets the SSL certificate for the main top-level page. 1053 */ 1054 public void setCertificate(SslCertificate certificate) { 1055 // here, the certificate can be null (if the site is not secure) 1056 mCertificate = certificate; 1057 } 1058 1059 //------------------------------------------------------------------------- 1060 // Methods called by activity 1061 //------------------------------------------------------------------------- 1062 1063 /** 1064 * Save the username and password for a particular host in the WebView's 1065 * internal database. 1066 * @param host The host that required the credentials. 1067 * @param username The username for the given host. 1068 * @param password The password for the given host. 1069 */ 1070 public void savePassword(String host, String username, String password) { 1071 mDatabase.setUsernamePassword(host, username, password); 1072 } 1073 1074 /** 1075 * Set the HTTP authentication credentials for a given host and realm. 1076 * 1077 * @param host The host for the credentials. 1078 * @param realm The realm for the credentials. 1079 * @param username The username for the password. If it is null, it means 1080 * password can't be saved. 1081 * @param password The password 1082 */ 1083 public void setHttpAuthUsernamePassword(String host, String realm, 1084 String username, String password) { 1085 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1086 } 1087 1088 /** 1089 * Retrieve the HTTP authentication username and password for a given 1090 * host & realm pair 1091 * 1092 * @param host The host for which the credentials apply. 1093 * @param realm The realm for which the credentials apply. 1094 * @return String[] if found, String[0] is username, which can be null and 1095 * String[1] is password. Return null if it can't find anything. 1096 */ 1097 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1098 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1099 } 1100 1101 /** 1102 * Destroy the internal state of the WebView. This method should be called 1103 * after the WebView has been removed from the view system. No other 1104 * methods may be called on a WebView after destroy. 1105 */ 1106 public void destroy() { 1107 clearTextEntry(); 1108 if (mWebViewCore != null) { 1109 // Set the handlers to null before destroying WebViewCore so no 1110 // more messages will be posted. 1111 mCallbackProxy.setWebViewClient(null); 1112 mCallbackProxy.setWebChromeClient(null); 1113 // Tell WebViewCore to destroy itself 1114 WebViewCore webViewCore = mWebViewCore; 1115 mWebViewCore = null; // prevent using partial webViewCore 1116 webViewCore.destroy(); 1117 // Remove any pending messages that might not be serviced yet. 1118 mPrivateHandler.removeCallbacksAndMessages(null); 1119 mCallbackProxy.removeCallbacksAndMessages(null); 1120 // Wake up the WebCore thread just in case it is waiting for a 1121 // javascript dialog. 1122 synchronized (mCallbackProxy) { 1123 mCallbackProxy.notify(); 1124 } 1125 } 1126 if (mNativeClass != 0) { 1127 nativeDestroy(); 1128 mNativeClass = 0; 1129 } 1130 } 1131 1132 /** 1133 * Enables platform notifications of data state and proxy changes. 1134 */ 1135 public static void enablePlatformNotifications() { 1136 Network.enablePlatformNotifications(); 1137 } 1138 1139 /** 1140 * If platform notifications are enabled, this should be called 1141 * from the Activity's onPause() or onStop(). 1142 */ 1143 public static void disablePlatformNotifications() { 1144 Network.disablePlatformNotifications(); 1145 } 1146 1147 /** 1148 * Sets JavaScript engine flags. 1149 * 1150 * @param flags JS engine flags in a String 1151 * 1152 * @hide pending API solidification 1153 */ 1154 public void setJsFlags(String flags) { 1155 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1156 } 1157 1158 /** 1159 * Inform WebView of the network state. This is used to set 1160 * the javascript property window.navigator.isOnline and 1161 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1162 * @param networkUp boolean indicating if network is available 1163 */ 1164 public void setNetworkAvailable(boolean networkUp) { 1165 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1166 networkUp ? 1 : 0, 0); 1167 } 1168 1169 /** 1170 * Inform WebView about the current network type. 1171 * {@hide} 1172 */ 1173 public void setNetworkType(String type, String subtype) { 1174 Map<String, String> map = new HashMap<String, String>(); 1175 map.put("type", type); 1176 map.put("subtype", subtype); 1177 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1178 } 1179 /** 1180 * Save the state of this WebView used in 1181 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1182 * method no longer stores the display data for this WebView. The previous 1183 * behavior could potentially leak files if {@link #restoreState} was never 1184 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1185 * and restoring the display data. 1186 * @param outState The Bundle to store the WebView state. 1187 * @return The same copy of the back/forward list used to save the state. If 1188 * saveState fails, the returned list will be null. 1189 * @see #savePicture 1190 * @see #restorePicture 1191 */ 1192 public WebBackForwardList saveState(Bundle outState) { 1193 if (outState == null) { 1194 return null; 1195 } 1196 // We grab a copy of the back/forward list because a client of WebView 1197 // may have invalidated the history list by calling clearHistory. 1198 WebBackForwardList list = copyBackForwardList(); 1199 final int currentIndex = list.getCurrentIndex(); 1200 final int size = list.getSize(); 1201 // We should fail saving the state if the list is empty or the index is 1202 // not in a valid range. 1203 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1204 return null; 1205 } 1206 outState.putInt("index", currentIndex); 1207 // FIXME: This should just be a byte[][] instead of ArrayList but 1208 // Parcel.java does not have the code to handle multi-dimensional 1209 // arrays. 1210 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1211 for (int i = 0; i < size; i++) { 1212 WebHistoryItem item = list.getItemAtIndex(i); 1213 if (null == item) { 1214 // FIXME: this shouldn't happen 1215 // need to determine how item got set to null 1216 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1217 return null; 1218 } 1219 byte[] data = item.getFlattenedData(); 1220 if (data == null) { 1221 // It would be very odd to not have any data for a given history 1222 // item. And we will fail to rebuild the history list without 1223 // flattened data. 1224 return null; 1225 } 1226 history.add(data); 1227 } 1228 outState.putSerializable("history", history); 1229 if (mCertificate != null) { 1230 outState.putBundle("certificate", 1231 SslCertificate.saveState(mCertificate)); 1232 } 1233 return list; 1234 } 1235 1236 /** 1237 * Save the current display data to the Bundle given. Used in conjunction 1238 * with {@link #saveState}. 1239 * @param b A Bundle to store the display data. 1240 * @param dest The file to store the serialized picture data. Will be 1241 * overwritten with this WebView's picture data. 1242 * @return True if the picture was successfully saved. 1243 */ 1244 public boolean savePicture(Bundle b, File dest) { 1245 if (dest == null || b == null) { 1246 return false; 1247 } 1248 final Picture p = capturePicture(); 1249 try { 1250 final FileOutputStream out = new FileOutputStream(dest); 1251 p.writeToStream(out); 1252 out.close(); 1253 } catch (FileNotFoundException e){ 1254 e.printStackTrace(); 1255 } catch (IOException e) { 1256 e.printStackTrace(); 1257 } catch (RuntimeException e) { 1258 e.printStackTrace(); 1259 } 1260 if (dest.length() > 0) { 1261 b.putInt("scrollX", mScrollX); 1262 b.putInt("scrollY", mScrollY); 1263 b.putFloat("scale", mActualScale); 1264 b.putFloat("textwrapScale", mTextWrapScale); 1265 b.putBoolean("overview", mInZoomOverview); 1266 return true; 1267 } 1268 return false; 1269 } 1270 1271 /** 1272 * Restore the display data that was save in {@link #savePicture}. Used in 1273 * conjunction with {@link #restoreState}. 1274 * @param b A Bundle containing the saved display data. 1275 * @param src The file where the picture data was stored. 1276 * @return True if the picture was successfully restored. 1277 */ 1278 public boolean restorePicture(Bundle b, File src) { 1279 if (src == null || b == null) { 1280 return false; 1281 } 1282 if (src.exists()) { 1283 Picture p = null; 1284 try { 1285 final FileInputStream in = new FileInputStream(src); 1286 p = Picture.createFromStream(in); 1287 in.close(); 1288 } catch (FileNotFoundException e){ 1289 e.printStackTrace(); 1290 } catch (RuntimeException e) { 1291 e.printStackTrace(); 1292 } catch (IOException e) { 1293 e.printStackTrace(); 1294 } 1295 if (p != null) { 1296 int sx = b.getInt("scrollX", 0); 1297 int sy = b.getInt("scrollY", 0); 1298 float scale = b.getFloat("scale", 1.0f); 1299 mDrawHistory = true; 1300 mHistoryPicture = p; 1301 mScrollX = sx; 1302 mScrollY = sy; 1303 mHistoryWidth = Math.round(p.getWidth() * scale); 1304 mHistoryHeight = Math.round(p.getHeight() * scale); 1305 // as getWidth() / getHeight() of the view are not 1306 // available yet, set up mActualScale, so that when 1307 // onSizeChanged() is called, the rest will be set 1308 // correctly 1309 mActualScale = scale; 1310 mTextWrapScale = b.getFloat("textwrapScale", scale); 1311 mInZoomOverview = b.getBoolean("overview"); 1312 invalidate(); 1313 return true; 1314 } 1315 } 1316 return false; 1317 } 1318 1319 /** 1320 * Restore the state of this WebView from the given map used in 1321 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1322 * be called to restore the state of the WebView before using the object. If 1323 * it is called after the WebView has had a chance to build state (load 1324 * pages, create a back/forward list, etc.) there may be undesirable 1325 * side-effects. Please note that this method no longer restores the 1326 * display data for this WebView. See {@link #savePicture} and {@link 1327 * #restorePicture} for saving and restoring the display data. 1328 * @param inState The incoming Bundle of state. 1329 * @return The restored back/forward list or null if restoreState failed. 1330 * @see #savePicture 1331 * @see #restorePicture 1332 */ 1333 public WebBackForwardList restoreState(Bundle inState) { 1334 WebBackForwardList returnList = null; 1335 if (inState == null) { 1336 return returnList; 1337 } 1338 if (inState.containsKey("index") && inState.containsKey("history")) { 1339 mCertificate = SslCertificate.restoreState( 1340 inState.getBundle("certificate")); 1341 1342 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1343 final int index = inState.getInt("index"); 1344 // We can't use a clone of the list because we need to modify the 1345 // shared copy, so synchronize instead to prevent concurrent 1346 // modifications. 1347 synchronized (list) { 1348 final List<byte[]> history = 1349 (List<byte[]>) inState.getSerializable("history"); 1350 final int size = history.size(); 1351 // Check the index bounds so we don't crash in native code while 1352 // restoring the history index. 1353 if (index < 0 || index >= size) { 1354 return null; 1355 } 1356 for (int i = 0; i < size; i++) { 1357 byte[] data = history.remove(0); 1358 if (data == null) { 1359 // If we somehow have null data, we cannot reconstruct 1360 // the item and thus our history list cannot be rebuilt. 1361 return null; 1362 } 1363 WebHistoryItem item = new WebHistoryItem(data); 1364 list.addHistoryItem(item); 1365 } 1366 // Grab the most recent copy to return to the caller. 1367 returnList = copyBackForwardList(); 1368 // Update the copy to have the correct index. 1369 returnList.setCurrentIndex(index); 1370 } 1371 // Remove all pending messages because we are restoring previous 1372 // state. 1373 mWebViewCore.removeMessages(); 1374 // Send a restore state message. 1375 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1376 } 1377 return returnList; 1378 } 1379 1380 /** 1381 * Load the given url with the extra headers. 1382 * @param url The url of the resource to load. 1383 * @param extraHeaders The extra headers sent with this url. This should not 1384 * include the common headers like "user-agent". If it does, it 1385 * will be replaced by the intrinsic value of the WebView. 1386 */ 1387 public void loadUrl(String url, Map<String, String> extraHeaders) { 1388 switchOutDrawHistory(); 1389 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1390 arg.mUrl = url; 1391 arg.mExtraHeaders = extraHeaders; 1392 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1393 clearTextEntry(); 1394 } 1395 1396 /** 1397 * Load the given url. 1398 * @param url The url of the resource to load. 1399 */ 1400 public void loadUrl(String url) { 1401 if (url == null) { 1402 return; 1403 } 1404 loadUrl(url, null); 1405 } 1406 1407 /** 1408 * Load the url with postData using "POST" method into the WebView. If url 1409 * is not a network url, it will be loaded with {link 1410 * {@link #loadUrl(String)} instead. 1411 * 1412 * @param url The url of the resource to load. 1413 * @param postData The data will be passed to "POST" request. 1414 */ 1415 public void postUrl(String url, byte[] postData) { 1416 if (URLUtil.isNetworkUrl(url)) { 1417 switchOutDrawHistory(); 1418 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1419 arg.mUrl = url; 1420 arg.mPostData = postData; 1421 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1422 clearTextEntry(); 1423 } else { 1424 loadUrl(url); 1425 } 1426 } 1427 1428 /** 1429 * Load the given data into the WebView. This will load the data into 1430 * WebView using the data: scheme. Content loaded through this mechanism 1431 * does not have the ability to load content from the network. 1432 * @param data A String of data in the given encoding. 1433 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1434 * @param encoding The encoding of the data. i.e. utf-8, base64 1435 */ 1436 public void loadData(String data, String mimeType, String encoding) { 1437 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1438 } 1439 1440 /** 1441 * Load the given data into the WebView, use the provided URL as the base 1442 * URL for the content. The base URL is the URL that represents the page 1443 * that is loaded through this interface. As such, it is used for the 1444 * history entry and to resolve any relative URLs. The failUrl is used if 1445 * browser fails to load the data provided. If it is empty or null, and the 1446 * load fails, then no history entry is created. 1447 * <p> 1448 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1449 * files through "file:///android_asset/" for the sub resources is more 1450 * restricted. If you provide null or empty string as baseUrl, you won't be 1451 * able to access asset files. If the baseUrl is anything other than 1452 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1453 * sub resources. 1454 * 1455 * @param baseUrl Url to resolve relative paths with, if null defaults to 1456 * "about:blank" 1457 * @param data A String of data in the given encoding. 1458 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1459 * defaults to "text/html" 1460 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1461 * @param failUrl URL to use if the content fails to load or null. 1462 */ 1463 public void loadDataWithBaseURL(String baseUrl, String data, 1464 String mimeType, String encoding, String failUrl) { 1465 1466 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1467 loadData(data, mimeType, encoding); 1468 return; 1469 } 1470 switchOutDrawHistory(); 1471 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1472 arg.mBaseUrl = baseUrl; 1473 arg.mData = data; 1474 arg.mMimeType = mimeType; 1475 arg.mEncoding = encoding; 1476 arg.mFailUrl = failUrl; 1477 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1478 clearTextEntry(); 1479 } 1480 1481 /** 1482 * Stop the current load. 1483 */ 1484 public void stopLoading() { 1485 // TODO: should we clear all the messages in the queue before sending 1486 // STOP_LOADING? 1487 switchOutDrawHistory(); 1488 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1489 } 1490 1491 /** 1492 * Reload the current url. 1493 */ 1494 public void reload() { 1495 clearTextEntry(); 1496 switchOutDrawHistory(); 1497 mWebViewCore.sendMessage(EventHub.RELOAD); 1498 } 1499 1500 /** 1501 * Return true if this WebView has a back history item. 1502 * @return True iff this WebView has a back history item. 1503 */ 1504 public boolean canGoBack() { 1505 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1506 synchronized (l) { 1507 if (l.getClearPending()) { 1508 return false; 1509 } else { 1510 return l.getCurrentIndex() > 0; 1511 } 1512 } 1513 } 1514 1515 /** 1516 * Go back in the history of this WebView. 1517 */ 1518 public void goBack() { 1519 goBackOrForward(-1); 1520 } 1521 1522 /** 1523 * Return true if this WebView has a forward history item. 1524 * @return True iff this Webview has a forward history item. 1525 */ 1526 public boolean canGoForward() { 1527 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1528 synchronized (l) { 1529 if (l.getClearPending()) { 1530 return false; 1531 } else { 1532 return l.getCurrentIndex() < l.getSize() - 1; 1533 } 1534 } 1535 } 1536 1537 /** 1538 * Go forward in the history of this WebView. 1539 */ 1540 public void goForward() { 1541 goBackOrForward(1); 1542 } 1543 1544 /** 1545 * Return true if the page can go back or forward the given 1546 * number of steps. 1547 * @param steps The negative or positive number of steps to move the 1548 * history. 1549 */ 1550 public boolean canGoBackOrForward(int steps) { 1551 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1552 synchronized (l) { 1553 if (l.getClearPending()) { 1554 return false; 1555 } else { 1556 int newIndex = l.getCurrentIndex() + steps; 1557 return newIndex >= 0 && newIndex < l.getSize(); 1558 } 1559 } 1560 } 1561 1562 /** 1563 * Go to the history item that is the number of steps away from 1564 * the current item. Steps is negative if backward and positive 1565 * if forward. 1566 * @param steps The number of steps to take back or forward in the back 1567 * forward list. 1568 */ 1569 public void goBackOrForward(int steps) { 1570 goBackOrForward(steps, false); 1571 } 1572 1573 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1574 // every time we go back or forward, we want to reset the 1575 // WebView certificate: 1576 // if the new site is secure, we will reload it and get a 1577 // new certificate set; 1578 // if the new site is not secure, the certificate must be 1579 // null, and that will be the case 1580 mCertificate = null; 1581 if (steps != 0) { 1582 clearTextEntry(); 1583 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1584 ignoreSnapshot ? 1 : 0); 1585 } 1586 } 1587 1588 private boolean extendScroll(int y) { 1589 int finalY = mScroller.getFinalY(); 1590 int newY = pinLocY(finalY + y); 1591 if (newY == finalY) return false; 1592 mScroller.setFinalY(newY); 1593 mScroller.extendDuration(computeDuration(0, y)); 1594 return true; 1595 } 1596 1597 /** 1598 * Scroll the contents of the view up by half the view size 1599 * @param top true to jump to the top of the page 1600 * @return true if the page was scrolled 1601 */ 1602 public boolean pageUp(boolean top) { 1603 if (mNativeClass == 0) { 1604 return false; 1605 } 1606 nativeClearCursor(); // start next trackball movement from page edge 1607 if (top) { 1608 // go to the top of the document 1609 return pinScrollTo(mScrollX, 0, true, 0); 1610 } 1611 // Page up 1612 int h = getHeight(); 1613 int y; 1614 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1615 y = -h + PAGE_SCROLL_OVERLAP; 1616 } else { 1617 y = -h / 2; 1618 } 1619 mUserScroll = true; 1620 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1621 : extendScroll(y); 1622 } 1623 1624 /** 1625 * Scroll the contents of the view down by half the page size 1626 * @param bottom true to jump to bottom of page 1627 * @return true if the page was scrolled 1628 */ 1629 public boolean pageDown(boolean bottom) { 1630 if (mNativeClass == 0) { 1631 return false; 1632 } 1633 nativeClearCursor(); // start next trackball movement from page edge 1634 if (bottom) { 1635 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1636 } 1637 // Page down. 1638 int h = getHeight(); 1639 int y; 1640 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1641 y = h - PAGE_SCROLL_OVERLAP; 1642 } else { 1643 y = h / 2; 1644 } 1645 mUserScroll = true; 1646 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1647 : extendScroll(y); 1648 } 1649 1650 /** 1651 * Clear the view so that onDraw() will draw nothing but white background, 1652 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1653 */ 1654 public void clearView() { 1655 mContentWidth = 0; 1656 mContentHeight = 0; 1657 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1658 } 1659 1660 /** 1661 * Return a new picture that captures the current display of the webview. 1662 * This is a copy of the display, and will be unaffected if the webview 1663 * later loads a different URL. 1664 * 1665 * @return a picture containing the current contents of the view. Note this 1666 * picture is of the entire document, and is not restricted to the 1667 * bounds of the view. 1668 */ 1669 public Picture capturePicture() { 1670 if (null == mWebViewCore) return null; // check for out of memory tab 1671 return mWebViewCore.copyContentPicture(); 1672 } 1673 1674 /** 1675 * Return true if the browser is displaying a TextView for text input. 1676 */ 1677 private boolean inEditingMode() { 1678 return mWebTextView != null && mWebTextView.getParent() != null 1679 && mWebTextView.hasFocus(); 1680 } 1681 1682 private void clearTextEntry() { 1683 if (inEditingMode()) { 1684 mWebTextView.remove(); 1685 } 1686 } 1687 1688 /** 1689 * Return the current scale of the WebView 1690 * @return The current scale. 1691 */ 1692 public float getScale() { 1693 return mActualScale; 1694 } 1695 1696 /** 1697 * Set the initial scale for the WebView. 0 means default. If 1698 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1699 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1700 * WebView starts will this value as initial scale. 1701 * 1702 * @param scaleInPercent The initial scale in percent. 1703 */ 1704 public void setInitialScale(int scaleInPercent) { 1705 mInitialScaleInPercent = scaleInPercent; 1706 } 1707 1708 /** 1709 * Invoke the graphical zoom picker widget for this WebView. This will 1710 * result in the zoom widget appearing on the screen to control the zoom 1711 * level of this WebView. 1712 */ 1713 public void invokeZoomPicker() { 1714 if (!getSettings().supportZoom()) { 1715 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1716 return; 1717 } 1718 clearTextEntry(); 1719 if (getSettings().getBuiltInZoomControls()) { 1720 mZoomButtonsController.setVisible(true); 1721 } else { 1722 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1723 mPrivateHandler.postDelayed(mZoomControlRunnable, 1724 ZOOM_CONTROLS_TIMEOUT); 1725 } 1726 } 1727 1728 /** 1729 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1730 * is found and the anchor has a non-javascript url, the HitTestResult type 1731 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1732 * anchor does not have a url or if it is a javascript url, the type will 1733 * be UNKNOWN_TYPE and the url has to be retrieved through 1734 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1735 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1736 * the "extra" field. A type of 1737 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1738 * a child node. If a phone number is found, the HitTestResult type is set 1739 * to PHONE_TYPE and the phone number is set in the "extra" field of 1740 * HitTestResult. If a map address is found, the HitTestResult type is set 1741 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1742 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1743 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1744 * HitTestResult type is set to UNKNOWN_TYPE. 1745 */ 1746 public HitTestResult getHitTestResult() { 1747 if (mNativeClass == 0) { 1748 return null; 1749 } 1750 1751 HitTestResult result = new HitTestResult(); 1752 if (nativeHasCursorNode()) { 1753 if (nativeCursorIsTextInput()) { 1754 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1755 } else { 1756 String text = nativeCursorText(); 1757 if (text != null) { 1758 if (text.startsWith(SCHEME_TEL)) { 1759 result.setType(HitTestResult.PHONE_TYPE); 1760 result.setExtra(text.substring(SCHEME_TEL.length())); 1761 } else if (text.startsWith(SCHEME_MAILTO)) { 1762 result.setType(HitTestResult.EMAIL_TYPE); 1763 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1764 } else if (text.startsWith(SCHEME_GEO)) { 1765 result.setType(HitTestResult.GEO_TYPE); 1766 result.setExtra(URLDecoder.decode(text 1767 .substring(SCHEME_GEO.length()))); 1768 } else if (nativeCursorIsAnchor()) { 1769 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1770 result.setExtra(text); 1771 } 1772 } 1773 } 1774 } 1775 int type = result.getType(); 1776 if (type == HitTestResult.UNKNOWN_TYPE 1777 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1778 // Now check to see if it is an image. 1779 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1780 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1781 String text = nativeImageURI(contentX, contentY); 1782 if (text != null) { 1783 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1784 HitTestResult.IMAGE_TYPE : 1785 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1786 result.setExtra(text); 1787 } 1788 } 1789 return result; 1790 } 1791 1792 // Called by JNI when the DOM has changed the focus. Clear the focus so 1793 // that new keys will go to the newly focused field 1794 private void domChangedFocus() { 1795 if (inEditingMode()) { 1796 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 1797 } 1798 } 1799 /** 1800 * Request the href of an anchor element due to getFocusNodePath returning 1801 * "href." If hrefMsg is null, this method returns immediately and does not 1802 * dispatch hrefMsg to its target. 1803 * 1804 * @param hrefMsg This message will be dispatched with the result of the 1805 * request as the data member with "url" as key. The result can 1806 * be null. 1807 */ 1808 // FIXME: API change required to change the name of this function. We now 1809 // look at the cursor node, and not the focus node. Also, what is 1810 // getFocusNodePath? 1811 public void requestFocusNodeHref(Message hrefMsg) { 1812 if (hrefMsg == null || mNativeClass == 0) { 1813 return; 1814 } 1815 if (nativeCursorIsAnchor()) { 1816 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1817 nativeCursorFramePointer(), nativeCursorNodePointer(), 1818 hrefMsg); 1819 } 1820 } 1821 1822 /** 1823 * Request the url of the image last touched by the user. msg will be sent 1824 * to its target with a String representing the url as its object. 1825 * 1826 * @param msg This message will be dispatched with the result of the request 1827 * as the data member with "url" as key. The result can be null. 1828 */ 1829 public void requestImageRef(Message msg) { 1830 if (0 == mNativeClass) return; // client isn't initialized 1831 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1832 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1833 String ref = nativeImageURI(contentX, contentY); 1834 Bundle data = msg.getData(); 1835 data.putString("url", ref); 1836 msg.setData(data); 1837 msg.sendToTarget(); 1838 } 1839 1840 private static int pinLoc(int x, int viewMax, int docMax) { 1841// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1842 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1843 // pin the short document to the top/left of the screen 1844 x = 0; 1845// Log.d(LOGTAG, "--- center " + x); 1846 } else if (x < 0) { 1847 x = 0; 1848// Log.d(LOGTAG, "--- zero"); 1849 } else if (x + viewMax > docMax) { 1850 x = docMax - viewMax; 1851// Log.d(LOGTAG, "--- pin " + x); 1852 } 1853 return x; 1854 } 1855 1856 // Expects x in view coordinates 1857 private int pinLocX(int x) { 1858 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1859 } 1860 1861 // Expects y in view coordinates 1862 private int pinLocY(int y) { 1863 int titleH = getTitleHeight(); 1864 // if the titlebar is still visible, just pin against 0 1865 if (y <= titleH) { 1866 return Math.max(y, 0); 1867 } 1868 // convert to 0-based coordinate (subtract the title height) 1869 // pin(), and then add the title height back in 1870 return pinLoc(y - titleH, getViewHeight(), 1871 computeVerticalScrollRange()) + titleH; 1872 } 1873 1874 /** 1875 * A title bar which is embedded in this WebView, and scrolls along with it 1876 * vertically, but not horizontally. 1877 */ 1878 private View mTitleBar; 1879 1880 /** 1881 * Since we draw the title bar ourselves, we removed the shadow from the 1882 * browser's activity. We do want a shadow at the bottom of the title bar, 1883 * or at the top of the screen if the title bar is not visible. This 1884 * drawable serves that purpose. 1885 */ 1886 private Drawable mTitleShadow; 1887 1888 /** 1889 * Add or remove a title bar to be embedded into the WebView, and scroll 1890 * along with it vertically, while remaining in view horizontally. Pass 1891 * null to remove the title bar from the WebView, and return to drawing 1892 * the WebView normally without translating to account for the title bar. 1893 * @hide 1894 */ 1895 public void setEmbeddedTitleBar(View v) { 1896 if (mTitleBar == v) return; 1897 if (mTitleBar != null) { 1898 removeView(mTitleBar); 1899 } 1900 if (null != v) { 1901 addView(v, new AbsoluteLayout.LayoutParams( 1902 ViewGroup.LayoutParams.MATCH_PARENT, 1903 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1904 if (mTitleShadow == null) { 1905 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1906 com.android.internal.R.drawable.title_bar_shadow); 1907 } 1908 } 1909 mTitleBar = v; 1910 } 1911 1912 /** 1913 * Given a distance in view space, convert it to content space. Note: this 1914 * does not reflect translation, just scaling, so this should not be called 1915 * with coordinates, but should be called for dimensions like width or 1916 * height. 1917 */ 1918 private int viewToContentDimension(int d) { 1919 return Math.round(d * mInvActualScale); 1920 } 1921 1922 /** 1923 * Given an x coordinate in view space, convert it to content space. Also 1924 * may be used for absolute heights (such as for the WebTextView's 1925 * textSize, which is unaffected by the height of the title bar). 1926 */ 1927 /*package*/ int viewToContentX(int x) { 1928 return viewToContentDimension(x); 1929 } 1930 1931 /** 1932 * Given a y coordinate in view space, convert it to content space. 1933 * Takes into account the height of the title bar if there is one 1934 * embedded into the WebView. 1935 */ 1936 /*package*/ int viewToContentY(int y) { 1937 return viewToContentDimension(y - getTitleHeight()); 1938 } 1939 1940 /** 1941 * Given a distance in content space, convert it to view space. Note: this 1942 * does not reflect translation, just scaling, so this should not be called 1943 * with coordinates, but should be called for dimensions like width or 1944 * height. 1945 */ 1946 /*package*/ int contentToViewDimension(int d) { 1947 return Math.round(d * mActualScale); 1948 } 1949 1950 /** 1951 * Given an x coordinate in content space, convert it to view 1952 * space. 1953 */ 1954 /*package*/ int contentToViewX(int x) { 1955 return contentToViewDimension(x); 1956 } 1957 1958 /** 1959 * Given a y coordinate in content space, convert it to view 1960 * space. Takes into account the height of the title bar. 1961 */ 1962 /*package*/ int contentToViewY(int y) { 1963 return contentToViewDimension(y) + getTitleHeight(); 1964 } 1965 1966 private Rect contentToViewRect(Rect x) { 1967 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 1968 contentToViewX(x.right), contentToViewY(x.bottom)); 1969 } 1970 1971 /* To invalidate a rectangle in content coordinates, we need to transform 1972 the rect into view coordinates, so we can then call invalidate(...). 1973 1974 Normally, we would just call contentToView[XY](...), which eventually 1975 calls Math.round(coordinate * mActualScale). However, for invalidates, 1976 we need to account for the slop that occurs with antialiasing. To 1977 address that, we are a little more liberal in the size of the rect that 1978 we invalidate. 1979 1980 This liberal calculation calls floor() for the top/left, and ceil() for 1981 the bottom/right coordinates. This catches the possible extra pixels of 1982 antialiasing that we might have missed with just round(). 1983 */ 1984 1985 // Called by JNI to invalidate the View, given rectangle coordinates in 1986 // content space 1987 private void viewInvalidate(int l, int t, int r, int b) { 1988 final float scale = mActualScale; 1989 final int dy = getTitleHeight(); 1990 invalidate((int)Math.floor(l * scale), 1991 (int)Math.floor(t * scale) + dy, 1992 (int)Math.ceil(r * scale), 1993 (int)Math.ceil(b * scale) + dy); 1994 } 1995 1996 // Called by JNI to invalidate the View after a delay, given rectangle 1997 // coordinates in content space 1998 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 1999 final float scale = mActualScale; 2000 final int dy = getTitleHeight(); 2001 postInvalidateDelayed(delay, 2002 (int)Math.floor(l * scale), 2003 (int)Math.floor(t * scale) + dy, 2004 (int)Math.ceil(r * scale), 2005 (int)Math.ceil(b * scale) + dy); 2006 } 2007 2008 private void invalidateContentRect(Rect r) { 2009 viewInvalidate(r.left, r.top, r.right, r.bottom); 2010 } 2011 2012 // stop the scroll animation, and don't let a subsequent fling add 2013 // to the existing velocity 2014 private void abortAnimation() { 2015 mScroller.abortAnimation(); 2016 mLastVelocity = 0; 2017 } 2018 2019 /* call from webcoreview.draw(), so we're still executing in the UI thread 2020 */ 2021 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2022 2023 // premature data from webkit, ignore 2024 if ((w | h) == 0) { 2025 return; 2026 } 2027 2028 // don't abort a scroll animation if we didn't change anything 2029 if (mContentWidth != w || mContentHeight != h) { 2030 // record new dimensions 2031 mContentWidth = w; 2032 mContentHeight = h; 2033 // If history Picture is drawn, don't update scroll. They will be 2034 // updated when we get out of that mode. 2035 if (!mDrawHistory) { 2036 // repin our scroll, taking into account the new content size 2037 int oldX = mScrollX; 2038 int oldY = mScrollY; 2039 mScrollX = pinLocX(mScrollX); 2040 mScrollY = pinLocY(mScrollY); 2041 if (oldX != mScrollX || oldY != mScrollY) { 2042 sendOurVisibleRect(); 2043 } 2044 if (!mScroller.isFinished()) { 2045 // We are in the middle of a scroll. Repin the final scroll 2046 // position. 2047 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2048 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2049 } 2050 } 2051 } 2052 contentSizeChanged(updateLayout); 2053 } 2054 2055 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 2056 boolean force) { 2057 if (scale < mMinZoomScale) { 2058 scale = mMinZoomScale; 2059 } else if (scale > mMaxZoomScale) { 2060 scale = mMaxZoomScale; 2061 } 2062 if (updateTextWrapScale) { 2063 mTextWrapScale = scale; 2064 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 2065 mLastHeightSent = 0; 2066 } 2067 if (scale != mActualScale || force) { 2068 if (mDrawHistory) { 2069 // If history Picture is drawn, don't update scroll. They will 2070 // be updated when we get out of that mode. 2071 if (scale != mActualScale && !mPreviewZoomOnly) { 2072 mCallbackProxy.onScaleChanged(mActualScale, scale); 2073 } 2074 mActualScale = scale; 2075 mInvActualScale = 1 / scale; 2076 sendViewSizeZoom(); 2077 } else { 2078 // update our scroll so we don't appear to jump 2079 // i.e. keep the center of the doc in the center of the view 2080 2081 int oldX = mScrollX; 2082 int oldY = mScrollY; 2083 float ratio = scale * mInvActualScale; // old inverse 2084 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2085 float sy = ratio * oldY + (ratio - 1) 2086 * (mZoomCenterY - getTitleHeight()); 2087 2088 // now update our new scale and inverse 2089 if (scale != mActualScale && !mPreviewZoomOnly) { 2090 mCallbackProxy.onScaleChanged(mActualScale, scale); 2091 } 2092 mActualScale = scale; 2093 mInvActualScale = 1 / scale; 2094 2095 // Scale all the child views 2096 mViewManager.scaleAll(); 2097 2098 // as we don't have animation for scaling, don't do animation 2099 // for scrolling, as it causes weird intermediate state 2100 // pinScrollTo(Math.round(sx), Math.round(sy)); 2101 mScrollX = pinLocX(Math.round(sx)); 2102 mScrollY = pinLocY(Math.round(sy)); 2103 2104 // update webkit 2105 sendViewSizeZoom(); 2106 sendOurVisibleRect(); 2107 } 2108 } 2109 } 2110 2111 // Used to avoid sending many visible rect messages. 2112 private Rect mLastVisibleRectSent; 2113 private Rect mLastGlobalRect; 2114 2115 private Rect sendOurVisibleRect() { 2116 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2117 2118 Rect rect = new Rect(); 2119 calcOurContentVisibleRect(rect); 2120 // Rect.equals() checks for null input. 2121 if (!rect.equals(mLastVisibleRectSent)) { 2122 Point pos = new Point(rect.left, rect.top); 2123 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2124 nativeMoveGeneration(), 0, pos); 2125 mLastVisibleRectSent = rect; 2126 } 2127 Rect globalRect = new Rect(); 2128 if (getGlobalVisibleRect(globalRect) 2129 && !globalRect.equals(mLastGlobalRect)) { 2130 if (DebugFlags.WEB_VIEW) { 2131 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2132 + globalRect.top + ",r=" + globalRect.right + ",b=" 2133 + globalRect.bottom); 2134 } 2135 // TODO: the global offset is only used by windowRect() 2136 // in ChromeClientAndroid ; other clients such as touch 2137 // and mouse events could return view + screen relative points. 2138 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2139 mLastGlobalRect = globalRect; 2140 } 2141 return rect; 2142 } 2143 2144 // Sets r to be the visible rectangle of our webview in view coordinates 2145 private void calcOurVisibleRect(Rect r) { 2146 Point p = new Point(); 2147 getGlobalVisibleRect(r, p); 2148 r.offset(-p.x, -p.y); 2149 if (mFindIsUp) { 2150 r.bottom -= mFindHeight; 2151 } 2152 } 2153 2154 // Sets r to be our visible rectangle in content coordinates 2155 private void calcOurContentVisibleRect(Rect r) { 2156 calcOurVisibleRect(r); 2157 r.left = viewToContentX(r.left); 2158 // viewToContentY will remove the total height of the title bar. Add 2159 // the visible height back in to account for the fact that if the title 2160 // bar is partially visible, the part of the visible rect which is 2161 // displaying our content is displaced by that amount. 2162 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2163 r.right = viewToContentX(r.right); 2164 r.bottom = viewToContentY(r.bottom); 2165 } 2166 2167 static class ViewSizeData { 2168 int mWidth; 2169 int mHeight; 2170 int mTextWrapWidth; 2171 int mAnchorX; 2172 int mAnchorY; 2173 float mScale; 2174 boolean mIgnoreHeight; 2175 } 2176 2177 /** 2178 * Compute unzoomed width and height, and if they differ from the last 2179 * values we sent, send them to webkit (to be used has new viewport) 2180 * 2181 * @return true if new values were sent 2182 */ 2183 private boolean sendViewSizeZoom() { 2184 if (mPreviewZoomOnly) return false; 2185 2186 int viewWidth = getViewWidth(); 2187 int newWidth = Math.round(viewWidth * mInvActualScale); 2188 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2189 /* 2190 * Because the native side may have already done a layout before the 2191 * View system was able to measure us, we have to send a height of 0 to 2192 * remove excess whitespace when we grow our width. This will trigger a 2193 * layout and a change in content size. This content size change will 2194 * mean that contentSizeChanged will either call this method directly or 2195 * indirectly from onSizeChanged. 2196 */ 2197 if (newWidth > mLastWidthSent && mWrapContent) { 2198 newHeight = 0; 2199 } 2200 // Avoid sending another message if the dimensions have not changed. 2201 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2202 ViewSizeData data = new ViewSizeData(); 2203 data.mWidth = newWidth; 2204 data.mHeight = newHeight; 2205 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2206 data.mScale = mActualScale; 2207 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2208 data.mAnchorX = mAnchorX; 2209 data.mAnchorY = mAnchorY; 2210 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2211 mLastWidthSent = newWidth; 2212 mLastHeightSent = newHeight; 2213 mAnchorX = mAnchorY = 0; 2214 return true; 2215 } 2216 return false; 2217 } 2218 2219 @Override 2220 protected int computeHorizontalScrollRange() { 2221 if (mDrawHistory) { 2222 return mHistoryWidth; 2223 } else { 2224 // to avoid rounding error caused unnecessary scrollbar, use floor 2225 return (int) Math.floor(mContentWidth * mActualScale); 2226 } 2227 } 2228 2229 @Override 2230 protected int computeVerticalScrollRange() { 2231 if (mDrawHistory) { 2232 return mHistoryHeight; 2233 } else { 2234 // to avoid rounding error caused unnecessary scrollbar, use floor 2235 return (int) Math.floor(mContentHeight * mActualScale); 2236 } 2237 } 2238 2239 @Override 2240 protected int computeVerticalScrollOffset() { 2241 return Math.max(mScrollY - getTitleHeight(), 0); 2242 } 2243 2244 @Override 2245 protected int computeVerticalScrollExtent() { 2246 return getViewHeight(); 2247 } 2248 2249 /** @hide */ 2250 @Override 2251 protected void onDrawVerticalScrollBar(Canvas canvas, 2252 Drawable scrollBar, 2253 int l, int t, int r, int b) { 2254 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2255 scrollBar.draw(canvas); 2256 } 2257 2258 /** 2259 * Get the url for the current page. This is not always the same as the url 2260 * passed to WebViewClient.onPageStarted because although the load for 2261 * that url has begun, the current page may not have changed. 2262 * @return The url for the current page. 2263 */ 2264 public String getUrl() { 2265 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2266 return h != null ? h.getUrl() : null; 2267 } 2268 2269 /** 2270 * Get the original url for the current page. This is not always the same 2271 * as the url passed to WebViewClient.onPageStarted because although the 2272 * load for that url has begun, the current page may not have changed. 2273 * Also, there may have been redirects resulting in a different url to that 2274 * originally requested. 2275 * @return The url that was originally requested for the current page. 2276 */ 2277 public String getOriginalUrl() { 2278 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2279 return h != null ? h.getOriginalUrl() : null; 2280 } 2281 2282 /** 2283 * Get the title for the current page. This is the title of the current page 2284 * until WebViewClient.onReceivedTitle is called. 2285 * @return The title for the current page. 2286 */ 2287 public String getTitle() { 2288 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2289 return h != null ? h.getTitle() : null; 2290 } 2291 2292 /** 2293 * Get the favicon for the current page. This is the favicon of the current 2294 * page until WebViewClient.onReceivedIcon is called. 2295 * @return The favicon for the current page. 2296 */ 2297 public Bitmap getFavicon() { 2298 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2299 return h != null ? h.getFavicon() : null; 2300 } 2301 2302 /** 2303 * Get the touch icon url for the apple-touch-icon <link> element. 2304 * @hide 2305 */ 2306 public String getTouchIconUrl() { 2307 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2308 return h != null ? h.getTouchIconUrl() : null; 2309 } 2310 2311 /** 2312 * Get the progress for the current page. 2313 * @return The progress for the current page between 0 and 100. 2314 */ 2315 public int getProgress() { 2316 return mCallbackProxy.getProgress(); 2317 } 2318 2319 /** 2320 * @return the height of the HTML content. 2321 */ 2322 public int getContentHeight() { 2323 return mContentHeight; 2324 } 2325 2326 /** 2327 * @return the width of the HTML content. 2328 * @hide 2329 */ 2330 public int getContentWidth() { 2331 return mContentWidth; 2332 } 2333 2334 /** 2335 * Pause all layout, parsing, and javascript timers for all webviews. This 2336 * is a global requests, not restricted to just this webview. This can be 2337 * useful if the application has been paused. 2338 */ 2339 public void pauseTimers() { 2340 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2341 } 2342 2343 /** 2344 * Resume all layout, parsing, and javascript timers for all webviews. 2345 * This will resume dispatching all timers. 2346 */ 2347 public void resumeTimers() { 2348 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2349 } 2350 2351 /** 2352 * Call this to pause any extra processing associated with this view and 2353 * its associated DOM/plugins/javascript/etc. For example, if the view is 2354 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2355 * network traffic. When the view is again "active", call onResume(). 2356 * 2357 * Note that this differs from pauseTimers(), which affects all views/DOMs 2358 * @hide 2359 */ 2360 public void onPause() { 2361 if (!mIsPaused) { 2362 mIsPaused = true; 2363 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2364 } 2365 } 2366 2367 /** 2368 * Call this to balanace a previous call to onPause() 2369 * @hide 2370 */ 2371 public void onResume() { 2372 if (mIsPaused) { 2373 mIsPaused = false; 2374 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2375 } 2376 } 2377 2378 /** 2379 * Returns true if the view is paused, meaning onPause() was called. Calling 2380 * onResume() sets the paused state back to false. 2381 * @hide 2382 */ 2383 public boolean isPaused() { 2384 return mIsPaused; 2385 } 2386 2387 /** 2388 * Call this to inform the view that memory is low so that it can 2389 * free any available memory. 2390 */ 2391 public void freeMemory() { 2392 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2393 } 2394 2395 /** 2396 * Clear the resource cache. Note that the cache is per-application, so 2397 * this will clear the cache for all WebViews used. 2398 * 2399 * @param includeDiskFiles If false, only the RAM cache is cleared. 2400 */ 2401 public void clearCache(boolean includeDiskFiles) { 2402 // Note: this really needs to be a static method as it clears cache for all 2403 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2404 // we can't make this static. 2405 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2406 includeDiskFiles ? 1 : 0, 0); 2407 } 2408 2409 /** 2410 * Make sure that clearing the form data removes the adapter from the 2411 * currently focused textfield if there is one. 2412 */ 2413 public void clearFormData() { 2414 if (inEditingMode()) { 2415 AutoCompleteAdapter adapter = null; 2416 mWebTextView.setAdapterCustom(adapter); 2417 } 2418 } 2419 2420 /** 2421 * Tell the WebView to clear its internal back/forward list. 2422 */ 2423 public void clearHistory() { 2424 mCallbackProxy.getBackForwardList().setClearPending(); 2425 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2426 } 2427 2428 /** 2429 * Clear the SSL preferences table stored in response to proceeding with SSL 2430 * certificate errors. 2431 */ 2432 public void clearSslPreferences() { 2433 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2434 } 2435 2436 /** 2437 * Return the WebBackForwardList for this WebView. This contains the 2438 * back/forward list for use in querying each item in the history stack. 2439 * This is a copy of the private WebBackForwardList so it contains only a 2440 * snapshot of the current state. Multiple calls to this method may return 2441 * different objects. The object returned from this method will not be 2442 * updated to reflect any new state. 2443 */ 2444 public WebBackForwardList copyBackForwardList() { 2445 return mCallbackProxy.getBackForwardList().clone(); 2446 } 2447 2448 /* 2449 * Highlight and scroll to the next occurance of String in findAll. 2450 * Wraps the page infinitely, and scrolls. Must be called after 2451 * calling findAll. 2452 * 2453 * @param forward Direction to search. 2454 */ 2455 public void findNext(boolean forward) { 2456 if (0 == mNativeClass) return; // client isn't initialized 2457 nativeFindNext(forward); 2458 } 2459 2460 /* 2461 * Find all instances of find on the page and highlight them. 2462 * @param find String to find. 2463 * @return int The number of occurances of the String "find" 2464 * that were found. 2465 */ 2466 public int findAll(String find) { 2467 if (0 == mNativeClass) return 0; // client isn't initialized 2468 if (mFindIsUp == false) { 2469 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2470 false); 2471 mFindIsUp = true; 2472 } 2473 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2474 invalidate(); 2475 mLastFind = find; 2476 return result; 2477 } 2478 2479 // Used to know whether the find dialog is open. Affects whether 2480 // or not we draw the highlights for matches. 2481 private boolean mFindIsUp; 2482 private int mFindHeight; 2483 // Keep track of the last string sent, so we can search again after an 2484 // orientation change or the dismissal of the soft keyboard. 2485 private String mLastFind; 2486 2487 /** 2488 * Return the first substring consisting of the address of a physical 2489 * location. Currently, only addresses in the United States are detected, 2490 * and consist of: 2491 * - a house number 2492 * - a street name 2493 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2494 * - a city name 2495 * - a state or territory, either spelled out or two-letter abbr. 2496 * - an optional 5 digit or 9 digit zip code. 2497 * 2498 * All names must be correctly capitalized, and the zip code, if present, 2499 * must be valid for the state. The street type must be a standard USPS 2500 * spelling or abbreviation. The state or territory must also be spelled 2501 * or abbreviated using USPS standards. The house number may not exceed 2502 * five digits. 2503 * @param addr The string to search for addresses. 2504 * 2505 * @return the address, or if no address is found, return null. 2506 */ 2507 public static String findAddress(String addr) { 2508 return findAddress(addr, false); 2509 } 2510 2511 /** 2512 * @hide 2513 * Return the first substring consisting of the address of a physical 2514 * location. Currently, only addresses in the United States are detected, 2515 * and consist of: 2516 * - a house number 2517 * - a street name 2518 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2519 * - a city name 2520 * - a state or territory, either spelled out or two-letter abbr. 2521 * - an optional 5 digit or 9 digit zip code. 2522 * 2523 * Names are optionally capitalized, and the zip code, if present, 2524 * must be valid for the state. The street type must be a standard USPS 2525 * spelling or abbreviation. The state or territory must also be spelled 2526 * or abbreviated using USPS standards. The house number may not exceed 2527 * five digits. 2528 * @param addr The string to search for addresses. 2529 * @param caseInsensitive addr Set to true to make search ignore case. 2530 * 2531 * @return the address, or if no address is found, return null. 2532 */ 2533 public static String findAddress(String addr, boolean caseInsensitive) { 2534 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2535 } 2536 2537 /* 2538 * Clear the highlighting surrounding text matches created by findAll. 2539 */ 2540 public void clearMatches() { 2541 if (mNativeClass == 0) 2542 return; 2543 if (mFindIsUp) { 2544 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2545 false); 2546 mFindIsUp = false; 2547 } 2548 nativeSetFindIsUp(); 2549 // Now that the dialog has been removed, ensure that we scroll to a 2550 // location that is not beyond the end of the page. 2551 pinScrollTo(mScrollX, mScrollY, false, 0); 2552 invalidate(); 2553 } 2554 2555 /** 2556 * @hide 2557 */ 2558 public void setFindDialogHeight(int height) { 2559 if (DebugFlags.WEB_VIEW) { 2560 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2561 } 2562 mFindHeight = height; 2563 } 2564 2565 /** 2566 * Query the document to see if it contains any image references. The 2567 * message object will be dispatched with arg1 being set to 1 if images 2568 * were found and 0 if the document does not reference any images. 2569 * @param response The message that will be dispatched with the result. 2570 */ 2571 public void documentHasImages(Message response) { 2572 if (response == null) { 2573 return; 2574 } 2575 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2576 } 2577 2578 @Override 2579 public void computeScroll() { 2580 if (mScroller.computeScrollOffset()) { 2581 int oldX = mScrollX; 2582 int oldY = mScrollY; 2583 mScrollX = mScroller.getCurrX(); 2584 mScrollY = mScroller.getCurrY(); 2585 postInvalidate(); // So we draw again 2586 if (oldX != mScrollX || oldY != mScrollY) { 2587 // as onScrollChanged() is not called, sendOurVisibleRect() 2588 // needs to be call explicitly 2589 sendOurVisibleRect(); 2590 } 2591 } else { 2592 super.computeScroll(); 2593 } 2594 } 2595 2596 private static int computeDuration(int dx, int dy) { 2597 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2598 int duration = distance * 1000 / STD_SPEED; 2599 return Math.min(duration, MAX_DURATION); 2600 } 2601 2602 // helper to pin the scrollBy parameters (already in view coordinates) 2603 // returns true if the scroll was changed 2604 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2605 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2606 } 2607 // helper to pin the scrollTo parameters (already in view coordinates) 2608 // returns true if the scroll was changed 2609 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2610 x = pinLocX(x); 2611 y = pinLocY(y); 2612 int dx = x - mScrollX; 2613 int dy = y - mScrollY; 2614 2615 if ((dx | dy) == 0) { 2616 return false; 2617 } 2618 if (animate) { 2619 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2620 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2621 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2622 awakenScrollBars(mScroller.getDuration()); 2623 invalidate(); 2624 } else { 2625 abortAnimation(); // just in case 2626 scrollTo(x, y); 2627 } 2628 return true; 2629 } 2630 2631 // Scale from content to view coordinates, and pin. 2632 // Also called by jni webview.cpp 2633 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2634 if (mDrawHistory) { 2635 // disallow WebView to change the scroll position as History Picture 2636 // is used in the view system. 2637 // TODO: as we switchOutDrawHistory when trackball or navigation 2638 // keys are hit, this should be safe. Right? 2639 return false; 2640 } 2641 cx = contentToViewDimension(cx); 2642 cy = contentToViewDimension(cy); 2643 if (mHeightCanMeasure) { 2644 // move our visible rect according to scroll request 2645 if (cy != 0) { 2646 Rect tempRect = new Rect(); 2647 calcOurVisibleRect(tempRect); 2648 tempRect.offset(cx, cy); 2649 requestRectangleOnScreen(tempRect); 2650 } 2651 // FIXME: We scroll horizontally no matter what because currently 2652 // ScrollView and ListView will not scroll horizontally. 2653 // FIXME: Why do we only scroll horizontally if there is no 2654 // vertical scroll? 2655// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2656 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2657 } else { 2658 return pinScrollBy(cx, cy, animate, 0); 2659 } 2660 } 2661 2662 /** 2663 * Called by CallbackProxy when the page finishes loading. 2664 * @param url The URL of the page which has finished loading. 2665 */ 2666 /* package */ void onPageFinished(String url) { 2667 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 2668 // If the user is now on a different page, or has scrolled the page 2669 // past the point where the title bar is offscreen, ignore the 2670 // scroll request. 2671 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 2672 && mScrollX == 0 && mScrollY == 0) { 2673 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 2674 SLIDE_TITLE_DURATION); 2675 } 2676 mPageThatNeedsToSlideTitleBarOffScreen = null; 2677 } 2678 } 2679 2680 /** 2681 * The URL of a page that sent a message to scroll the title bar off screen. 2682 * 2683 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 2684 * title bar off the screen. Sometimes, the scroll position is set before 2685 * the page finishes loading. Rather than scrolling while the page is still 2686 * loading, keep track of the URL and new scroll position so we can perform 2687 * the scroll once the page finishes loading. 2688 */ 2689 private String mPageThatNeedsToSlideTitleBarOffScreen; 2690 2691 /** 2692 * The destination Y scroll position to be used when the page finishes 2693 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 2694 */ 2695 private int mYDistanceToSlideTitleOffScreen; 2696 2697 // scale from content to view coordinates, and pin 2698 // return true if pin caused the final x/y different than the request cx/cy, 2699 // and a future scroll may reach the request cx/cy after our size has 2700 // changed 2701 // return false if the view scroll to the exact position as it is requested, 2702 // where negative numbers are taken to mean 0 2703 private boolean setContentScrollTo(int cx, int cy) { 2704 if (mDrawHistory) { 2705 // disallow WebView to change the scroll position as History Picture 2706 // is used in the view system. 2707 // One known case where this is called is that WebCore tries to 2708 // restore the scroll position. As history Picture already uses the 2709 // saved scroll position, it is ok to skip this. 2710 return false; 2711 } 2712 int vx; 2713 int vy; 2714 if ((cx | cy) == 0) { 2715 // If the page is being scrolled to (0,0), do not add in the title 2716 // bar's height, and simply scroll to (0,0). (The only other work 2717 // in contentToView_ is to multiply, so this would not change 0.) 2718 vx = 0; 2719 vy = 0; 2720 } else { 2721 vx = contentToViewX(cx); 2722 vy = contentToViewY(cy); 2723 } 2724// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2725// vx + " " + vy + "]"); 2726 // Some mobile sites attempt to scroll the title bar off the page by 2727 // scrolling to (0,1). If we are at the top left corner of the 2728 // page, assume this is an attempt to scroll off the title bar, and 2729 // animate the title bar off screen slowly enough that the user can see 2730 // it. 2731 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 2732 && mTitleBar != null) { 2733 // FIXME: 100 should be defined somewhere as our max progress. 2734 if (getProgress() < 100) { 2735 // Wait to scroll the title bar off screen until the page has 2736 // finished loading. Keep track of the URL and the destination 2737 // Y position 2738 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 2739 mYDistanceToSlideTitleOffScreen = vy; 2740 } else { 2741 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2742 } 2743 // Since we are animating, we have not yet reached the desired 2744 // scroll position. Do not return true to request another attempt 2745 return false; 2746 } 2747 pinScrollTo(vx, vy, false, 0); 2748 // If the request was to scroll to a negative coordinate, treat it as if 2749 // it was a request to scroll to 0 2750 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2751 return true; 2752 } else { 2753 return false; 2754 } 2755 } 2756 2757 // scale from content to view coordinates, and pin 2758 private void spawnContentScrollTo(int cx, int cy) { 2759 if (mDrawHistory) { 2760 // disallow WebView to change the scroll position as History Picture 2761 // is used in the view system. 2762 return; 2763 } 2764 int vx = contentToViewX(cx); 2765 int vy = contentToViewY(cy); 2766 pinScrollTo(vx, vy, true, 0); 2767 } 2768 2769 /** 2770 * These are from webkit, and are in content coordinate system (unzoomed) 2771 */ 2772 private void contentSizeChanged(boolean updateLayout) { 2773 // suppress 0,0 since we usually see real dimensions soon after 2774 // this avoids drawing the prev content in a funny place. If we find a 2775 // way to consolidate these notifications, this check may become 2776 // obsolete 2777 if ((mContentWidth | mContentHeight) == 0) { 2778 return; 2779 } 2780 2781 if (mHeightCanMeasure) { 2782 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2783 || updateLayout) { 2784 requestLayout(); 2785 } 2786 } else if (mWidthCanMeasure) { 2787 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2788 || updateLayout) { 2789 requestLayout(); 2790 } 2791 } else { 2792 // If we don't request a layout, try to send our view size to the 2793 // native side to ensure that WebCore has the correct dimensions. 2794 sendViewSizeZoom(); 2795 } 2796 } 2797 2798 /** 2799 * Set the WebViewClient that will receive various notifications and 2800 * requests. This will replace the current handler. 2801 * @param client An implementation of WebViewClient. 2802 */ 2803 public void setWebViewClient(WebViewClient client) { 2804 mCallbackProxy.setWebViewClient(client); 2805 } 2806 2807 /** 2808 * Gets the WebViewClient 2809 * @return the current WebViewClient instance. 2810 * 2811 *@hide pending API council approval. 2812 */ 2813 public WebViewClient getWebViewClient() { 2814 return mCallbackProxy.getWebViewClient(); 2815 } 2816 2817 /** 2818 * Register the interface to be used when content can not be handled by 2819 * the rendering engine, and should be downloaded instead. This will replace 2820 * the current handler. 2821 * @param listener An implementation of DownloadListener. 2822 */ 2823 public void setDownloadListener(DownloadListener listener) { 2824 mCallbackProxy.setDownloadListener(listener); 2825 } 2826 2827 /** 2828 * Set the chrome handler. This is an implementation of WebChromeClient for 2829 * use in handling Javascript dialogs, favicons, titles, and the progress. 2830 * This will replace the current handler. 2831 * @param client An implementation of WebChromeClient. 2832 */ 2833 public void setWebChromeClient(WebChromeClient client) { 2834 mCallbackProxy.setWebChromeClient(client); 2835 } 2836 2837 /** 2838 * Gets the chrome handler. 2839 * @return the current WebChromeClient instance. 2840 * 2841 * @hide API council approval. 2842 */ 2843 public WebChromeClient getWebChromeClient() { 2844 return mCallbackProxy.getWebChromeClient(); 2845 } 2846 2847 /** 2848 * Set the Picture listener. This is an interface used to receive 2849 * notifications of a new Picture. 2850 * @param listener An implementation of WebView.PictureListener. 2851 */ 2852 public void setPictureListener(PictureListener listener) { 2853 mPictureListener = listener; 2854 } 2855 2856 /** 2857 * {@hide} 2858 */ 2859 /* FIXME: Debug only! Remove for SDK! */ 2860 public void externalRepresentation(Message callback) { 2861 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2862 } 2863 2864 /** 2865 * {@hide} 2866 */ 2867 /* FIXME: Debug only! Remove for SDK! */ 2868 public void documentAsText(Message callback) { 2869 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2870 } 2871 2872 /** 2873 * Use this function to bind an object to Javascript so that the 2874 * methods can be accessed from Javascript. 2875 * <p><strong>IMPORTANT:</strong> 2876 * <ul> 2877 * <li> Using addJavascriptInterface() allows JavaScript to control your 2878 * application. This can be a very useful feature or a dangerous security 2879 * issue. When the HTML in the WebView is untrustworthy (for example, part 2880 * or all of the HTML is provided by some person or process), then an 2881 * attacker could inject HTML that will execute your code and possibly any 2882 * code of the attacker's choosing.<br> 2883 * Do not use addJavascriptInterface() unless all of the HTML in this 2884 * WebView was written by you.</li> 2885 * <li> The Java object that is bound runs in another thread and not in 2886 * the thread that it was constructed in.</li> 2887 * </ul></p> 2888 * @param obj The class instance to bind to Javascript 2889 * @param interfaceName The name to used to expose the class in Javascript 2890 */ 2891 public void addJavascriptInterface(Object obj, String interfaceName) { 2892 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2893 arg.mObject = obj; 2894 arg.mInterfaceName = interfaceName; 2895 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2896 } 2897 2898 /** 2899 * Return the WebSettings object used to control the settings for this 2900 * WebView. 2901 * @return A WebSettings object that can be used to control this WebView's 2902 * settings. 2903 */ 2904 public WebSettings getSettings() { 2905 return mWebViewCore.getSettings(); 2906 } 2907 2908 /** 2909 * Return the list of currently loaded plugins. 2910 * @return The list of currently loaded plugins. 2911 * 2912 * @deprecated This was used for Gears, which has been deprecated. 2913 */ 2914 @Deprecated 2915 public static synchronized PluginList getPluginList() { 2916 return new PluginList(); 2917 } 2918 2919 /** 2920 * @deprecated This was used for Gears, which has been deprecated. 2921 */ 2922 @Deprecated 2923 public void refreshPlugins(boolean reloadOpenPages) { } 2924 2925 //------------------------------------------------------------------------- 2926 // Override View methods 2927 //------------------------------------------------------------------------- 2928 2929 @Override 2930 protected void finalize() throws Throwable { 2931 try { 2932 destroy(); 2933 } finally { 2934 super.finalize(); 2935 } 2936 } 2937 2938 @Override 2939 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 2940 if (child == mTitleBar) { 2941 // When drawing the title bar, move it horizontally to always show 2942 // at the top of the WebView. 2943 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 2944 } 2945 return super.drawChild(canvas, child, drawingTime); 2946 } 2947 2948 private void drawContent(Canvas canvas) { 2949 // Update the buttons in the picture, so when we draw the picture 2950 // to the screen, they are in the correct state. 2951 // Tell the native side if user is a) touching the screen, 2952 // b) pressing the trackball down, or c) pressing the enter key 2953 // If the cursor is on a button, we need to draw it in the pressed 2954 // state. 2955 // If mNativeClass is 0, we should not reach here, so we do not 2956 // need to check it again. 2957 nativeRecordButtons(hasFocus() && hasWindowFocus(), 2958 mTouchMode == TOUCH_SHORTPRESS_START_MODE 2959 || mTrackballDown || mGotCenterDown, false); 2960 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 2961 } 2962 2963 @Override 2964 protected void onDraw(Canvas canvas) { 2965 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 2966 if (mNativeClass == 0) { 2967 return; 2968 } 2969 2970 int saveCount = canvas.save(); 2971 if (mTitleBar != null) { 2972 canvas.translate(0, (int) mTitleBar.getHeight()); 2973 } 2974 if (mDragTrackerHandler == null || !mDragTrackerHandler.draw(canvas)) { 2975 drawContent(canvas); 2976 } 2977 canvas.restoreToCount(saveCount); 2978 2979 // Now draw the shadow. 2980 if (mTitleBar != null) { 2981 int y = mScrollY + getVisibleTitleHeight(); 2982 int height = (int) (5f * getContext().getResources() 2983 .getDisplayMetrics().density); 2984 mTitleShadow.setBounds(mScrollX, y, mScrollX + getWidth(), 2985 y + height); 2986 mTitleShadow.draw(canvas); 2987 } 2988 if (AUTO_REDRAW_HACK && mAutoRedraw) { 2989 invalidate(); 2990 } 2991 mWebViewCore.signalRepaintDone(); 2992 } 2993 2994 @Override 2995 public void setLayoutParams(ViewGroup.LayoutParams params) { 2996 if (params.height == LayoutParams.WRAP_CONTENT) { 2997 mWrapContent = true; 2998 } 2999 super.setLayoutParams(params); 3000 } 3001 3002 @Override 3003 public boolean performLongClick() { 3004 // performLongClick() is the result of a delayed message. If we switch 3005 // to windows overview, the WebView will be temporarily removed from the 3006 // view system. In that case, do nothing. 3007 if (getParent() == null) return false; 3008 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3009 // Send the click so that the textfield is in focus 3010 centerKeyPressOnTextField(); 3011 rebuildWebTextView(); 3012 } 3013 if (inEditingMode()) { 3014 return mWebTextView.performLongClick(); 3015 } else { 3016 return super.performLongClick(); 3017 } 3018 } 3019 3020 boolean inAnimateZoom() { 3021 return mZoomScale != 0; 3022 } 3023 3024 /** 3025 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3026 * has changed. This is especially important for password fields, which are 3027 * drawn by the WebTextView, since it conveys more information than what 3028 * webkit draws. Thus we need to reposition it to show in the correct 3029 * place. 3030 */ 3031 private boolean mNeedToAdjustWebTextView; 3032 3033 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3034 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3035 Rect vBox = contentToViewRect(contentBounds); 3036 Rect visibleRect = new Rect(); 3037 calcOurVisibleRect(visibleRect); 3038 // The IME may have shown, resulting in the textfield being offscreen. 3039 // If so, the textfield will be scrolled on screen, so treat it as 3040 // though it is on screen. If it is on screen, place the WebTextView in 3041 // its new place, accounting for our new scroll/zoom values. 3042 InputMethodManager imm = InputMethodManager.peekInstance(); 3043 if ((imm != null && imm.isActive(mWebTextView)) 3044 || (allowIntersect ? Rect.intersects(visibleRect, vBox) 3045 : visibleRect.contains(vBox))) { 3046 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3047 vBox.height()); 3048 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3049 contentToViewDimension( 3050 nativeFocusCandidateTextSize())); 3051 return true; 3052 } else { 3053 // The textfield is now off screen. The user probably 3054 // was not zooming to see the textfield better. Remove 3055 // the WebTextView. If the user types a key, and the 3056 // textfield is still in focus, we will reconstruct 3057 // the WebTextView and scroll it back on screen. 3058 mWebTextView.remove(); 3059 return false; 3060 } 3061 } 3062 3063 private void drawLayers(Canvas canvas) { 3064 if (mRootLayer != 0) { 3065 int scrollY = computeVerticalScrollOffset(); 3066 int viewHeight = getHeight() - getVisibleTitleHeight(); 3067 3068 nativeDrawLayers(mRootLayer, mScrollX, scrollY, 3069 getWidth(), viewHeight, 3070 mActualScale, canvas); 3071 } 3072 } 3073 3074 private void drawCoreAndCursorRing(Canvas canvas, int color, 3075 boolean drawCursorRing) { 3076 if (mDrawHistory) { 3077 canvas.scale(mActualScale, mActualScale); 3078 canvas.drawPicture(mHistoryPicture); 3079 drawLayers(canvas); 3080 return; 3081 } 3082 3083 boolean animateZoom = mZoomScale != 0; 3084 boolean animateScroll = (!mScroller.isFinished() 3085 || mVelocityTracker != null) 3086 && (mTouchMode != TOUCH_DRAG_MODE || 3087 mHeldMotionless != MOTIONLESS_TRUE); 3088 if (mTouchMode == TOUCH_DRAG_MODE) { 3089 if (mHeldMotionless == MOTIONLESS_PENDING) { 3090 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3091 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3092 mHeldMotionless = MOTIONLESS_FALSE; 3093 } 3094 if (mHeldMotionless == MOTIONLESS_FALSE) { 3095 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3096 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3097 mHeldMotionless = MOTIONLESS_PENDING; 3098 } 3099 } 3100 if (animateZoom) { 3101 float zoomScale; 3102 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 3103 if (interval < ZOOM_ANIMATION_LENGTH) { 3104 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 3105 zoomScale = 1.0f / (mInvInitialZoomScale 3106 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 3107 invalidate(); 3108 } else { 3109 zoomScale = mZoomScale; 3110 // set mZoomScale to be 0 as we have done animation 3111 mZoomScale = 0; 3112 WebViewCore.resumeUpdatePicture(mWebViewCore); 3113 // call invalidate() again to draw with the final filters 3114 invalidate(); 3115 if (mNeedToAdjustWebTextView) { 3116 mNeedToAdjustWebTextView = false; 3117 if (didUpdateTextViewBounds(false) 3118 && nativeFocusCandidateIsPassword()) { 3119 // If it is a password field, start drawing the 3120 // WebTextView once again. 3121 mWebTextView.setInPassword(true); 3122 } 3123 } 3124 } 3125 // calculate the intermediate scroll position. As we need to use 3126 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 3127 float scale = zoomScale * mInvInitialZoomScale; 3128 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 3129 - mZoomCenterX); 3130 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 3131 * zoomScale)) + mScrollX; 3132 int titleHeight = getTitleHeight(); 3133 int ty = Math.round(scale 3134 * (mInitialScrollY + mZoomCenterY - titleHeight) 3135 - (mZoomCenterY - titleHeight)); 3136 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 3137 - titleHeight, getViewHeight(), Math.round(mContentHeight 3138 * zoomScale)) + titleHeight) + mScrollY; 3139 canvas.translate(tx, ty); 3140 canvas.scale(zoomScale, zoomScale); 3141 if (inEditingMode() && !mNeedToAdjustWebTextView 3142 && mZoomScale != 0) { 3143 // The WebTextView is up. Keep track of this so we can adjust 3144 // its size and placement when we finish zooming 3145 mNeedToAdjustWebTextView = true; 3146 // If it is in password mode, turn it off so it does not draw 3147 // misplaced. 3148 if (nativeFocusCandidateIsPassword()) { 3149 mWebTextView.setInPassword(false); 3150 } 3151 } 3152 } else { 3153 canvas.scale(mActualScale, mActualScale); 3154 } 3155 3156 mWebViewCore.drawContentPicture(canvas, color, 3157 (animateZoom || mPreviewZoomOnly), animateScroll); 3158 3159 drawLayers(canvas); 3160 3161 if (mNativeClass == 0) return; 3162 if (mShiftIsPressed && !(animateZoom || mPreviewZoomOnly)) { 3163 if (mTouchSelection || mExtendSelection) { 3164 nativeDrawSelectionRegion(canvas); 3165 } 3166 if (!mTouchSelection) { 3167 nativeDrawSelectionPointer(canvas, mInvActualScale, mSelectX, 3168 mSelectY - getTitleHeight(), mExtendSelection); 3169 } 3170 } else if (drawCursorRing) { 3171 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3172 mTouchMode = TOUCH_SHORTPRESS_MODE; 3173 HitTestResult hitTest = getHitTestResult(); 3174 if (mPreventLongPress || (hitTest != null && 3175 hitTest.mType != HitTestResult.UNKNOWN_TYPE)) { 3176 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3177 .obtainMessage(SWITCH_TO_LONGPRESS), 3178 LONG_PRESS_TIMEOUT); 3179 } 3180 } 3181 nativeDrawCursorRing(canvas); 3182 } 3183 // When the FindDialog is up, only draw the matches if we are not in 3184 // the process of scrolling them into view. 3185 if (mFindIsUp && !animateScroll) { 3186 nativeDrawMatches(canvas); 3187 } 3188 if (mFocusSizeChanged) { 3189 mFocusSizeChanged = false; 3190 // If we are zooming, this will get handled above, when the zoom 3191 // finishes. We also do not need to do this unless the WebTextView 3192 // is showing. 3193 if (!animateZoom && inEditingMode()) { 3194 didUpdateTextViewBounds(true); 3195 } 3196 } 3197 } 3198 3199 // draw history 3200 private boolean mDrawHistory = false; 3201 private Picture mHistoryPicture = null; 3202 private int mHistoryWidth = 0; 3203 private int mHistoryHeight = 0; 3204 3205 // Only check the flag, can be called from WebCore thread 3206 boolean drawHistory() { 3207 return mDrawHistory; 3208 } 3209 3210 // Should only be called in UI thread 3211 void switchOutDrawHistory() { 3212 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3213 if (mDrawHistory && mWebViewCore.pictureReady()) { 3214 mDrawHistory = false; 3215 invalidate(); 3216 int oldScrollX = mScrollX; 3217 int oldScrollY = mScrollY; 3218 mScrollX = pinLocX(mScrollX); 3219 mScrollY = pinLocY(mScrollY); 3220 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3221 mUserScroll = false; 3222 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3223 oldScrollY); 3224 } 3225 sendOurVisibleRect(); 3226 } 3227 } 3228 3229 WebViewCore.CursorData cursorData() { 3230 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3231 result.mMoveGeneration = nativeMoveGeneration(); 3232 result.mFrame = nativeCursorFramePointer(); 3233 Point position = nativeCursorPosition(); 3234 result.mX = position.x; 3235 result.mY = position.y; 3236 return result; 3237 } 3238 3239 /** 3240 * Delete text from start to end in the focused textfield. If there is no 3241 * focus, or if start == end, silently fail. If start and end are out of 3242 * order, swap them. 3243 * @param start Beginning of selection to delete. 3244 * @param end End of selection to delete. 3245 */ 3246 /* package */ void deleteSelection(int start, int end) { 3247 mTextGeneration++; 3248 WebViewCore.TextSelectionData data 3249 = new WebViewCore.TextSelectionData(start, end); 3250 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3251 data); 3252 } 3253 3254 /** 3255 * Set the selection to (start, end) in the focused textfield. If start and 3256 * end are out of order, swap them. 3257 * @param start Beginning of selection. 3258 * @param end End of selection. 3259 */ 3260 /* package */ void setSelection(int start, int end) { 3261 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3262 } 3263 3264 @Override 3265 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3266 InputConnection connection = super.onCreateInputConnection(outAttrs); 3267 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3268 return connection; 3269 } 3270 3271 /** 3272 * Called in response to a message from webkit telling us that the soft 3273 * keyboard should be launched. 3274 */ 3275 private void displaySoftKeyboard(boolean isTextView) { 3276 InputMethodManager imm = (InputMethodManager) 3277 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3278 3279 if (isTextView) { 3280 rebuildWebTextView(); 3281 if (!inEditingMode()) return; 3282 imm.showSoftInput(mWebTextView, 0); 3283 // bring it back to the default scale so that user can enter text 3284 if (mActualScale < mDefaultScale) { 3285 mInZoomOverview = false; 3286 mZoomCenterX = mLastTouchX; 3287 mZoomCenterY = mLastTouchY; 3288 // do not change text wrap scale so that there is no reflow 3289 setNewZoomScale(mDefaultScale, false, false); 3290 didUpdateTextViewBounds(true); 3291 } 3292 } 3293 else { // used by plugins 3294 imm.showSoftInput(this, 0); 3295 } 3296 } 3297 3298 // Called by WebKit to instruct the UI to hide the keyboard 3299 private void hideSoftKeyboard() { 3300 InputMethodManager imm = (InputMethodManager) 3301 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3302 3303 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3304 } 3305 3306 /* 3307 * This method checks the current focus and cursor and potentially rebuilds 3308 * mWebTextView to have the appropriate properties, such as password, 3309 * multiline, and what text it contains. It also removes it if necessary. 3310 */ 3311 /* package */ void rebuildWebTextView() { 3312 // If the WebView does not have focus, do nothing until it gains focus. 3313 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3314 return; 3315 } 3316 boolean alreadyThere = inEditingMode(); 3317 // inEditingMode can only return true if mWebTextView is non-null, 3318 // so we can safely call remove() if (alreadyThere) 3319 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3320 if (alreadyThere) { 3321 mWebTextView.remove(); 3322 } 3323 return; 3324 } 3325 // At this point, we know we have found an input field, so go ahead 3326 // and create the WebTextView if necessary. 3327 if (mWebTextView == null) { 3328 mWebTextView = new WebTextView(mContext, WebView.this); 3329 // Initialize our generation number. 3330 mTextGeneration = 0; 3331 } 3332 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3333 contentToViewDimension(nativeFocusCandidateTextSize())); 3334 Rect visibleRect = new Rect(); 3335 calcOurContentVisibleRect(visibleRect); 3336 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3337 // should be in content coordinates. 3338 Rect bounds = nativeFocusCandidateNodeBounds(); 3339 Rect vBox = contentToViewRect(bounds); 3340 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3341 if (!Rect.intersects(bounds, visibleRect)) { 3342 mWebTextView.bringIntoView(); 3343 } 3344 String text = nativeFocusCandidateText(); 3345 int nodePointer = nativeFocusCandidatePointer(); 3346 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3347 // It is possible that we have the same textfield, but it has moved, 3348 // i.e. In the case of opening/closing the screen. 3349 // In that case, we need to set the dimensions, but not the other 3350 // aspects. 3351 // If the text has been changed by webkit, update it. However, if 3352 // there has been more UI text input, ignore it. We will receive 3353 // another update when that text is recognized. 3354 if (text != null && !text.equals(mWebTextView.getText().toString()) 3355 && nativeTextGeneration() == mTextGeneration) { 3356 mWebTextView.setTextAndKeepSelection(text); 3357 } 3358 } else { 3359 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3360 Gravity.RIGHT : Gravity.NO_GRAVITY); 3361 // This needs to be called before setType, which may call 3362 // requestFormData, and it needs to have the correct nodePointer. 3363 mWebTextView.setNodePointer(nodePointer); 3364 mWebTextView.setType(nativeFocusCandidateType()); 3365 if (null == text) { 3366 if (DebugFlags.WEB_VIEW) { 3367 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3368 } 3369 text = ""; 3370 } 3371 mWebTextView.setTextAndKeepSelection(text); 3372 } 3373 mWebTextView.requestFocus(); 3374 } 3375 3376 /** 3377 * Called by WebTextView to find saved form data associated with the 3378 * textfield 3379 * @param name Name of the textfield. 3380 * @param nodePointer Pointer to the node of the textfield, so it can be 3381 * compared to the currently focused textfield when the data is 3382 * retrieved. 3383 */ 3384 /* package */ void requestFormData(String name, int nodePointer) { 3385 if (mWebViewCore.getSettings().getSaveFormData()) { 3386 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3387 update.arg1 = nodePointer; 3388 RequestFormData updater = new RequestFormData(name, getUrl(), 3389 update); 3390 Thread t = new Thread(updater); 3391 t.start(); 3392 } 3393 } 3394 3395 /** 3396 * Pass a message to find out the <label> associated with the <input> 3397 * identified by nodePointer 3398 * @param framePointer Pointer to the frame containing the <input> node 3399 * @param nodePointer Pointer to the node for which a <label> is desired. 3400 */ 3401 /* package */ void requestLabel(int framePointer, int nodePointer) { 3402 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3403 nodePointer); 3404 } 3405 3406 /* 3407 * This class runs the layers animations in their own thread, 3408 * so that we do not slow down the UI. 3409 */ 3410 private class EvaluateLayersAnimations extends Thread { 3411 boolean mRunning = true; 3412 // delay corresponds to 40fps, no need to go faster. 3413 int mDelay = 25; // in ms 3414 public void run() { 3415 while (mRunning) { 3416 if (mLayersHaveAnimations && mRootLayer != 0) { 3417 // updates is a C++ pointer to a Vector of AnimationValues 3418 int updates = nativeEvaluateLayersAnimations(mRootLayer); 3419 if (updates == 0) { 3420 mRunning = false; 3421 } 3422 Message.obtain(mPrivateHandler, 3423 WebView.IMMEDIATE_REPAINT_MSG_ID, 3424 updates, 0).sendToTarget(); 3425 } else { 3426 mRunning = false; 3427 } 3428 try { 3429 Thread.currentThread().sleep(mDelay); 3430 } catch (InterruptedException e) { 3431 mRunning = false; 3432 } 3433 } 3434 } 3435 public void cancel() { 3436 mRunning = false; 3437 } 3438 } 3439 3440 /* 3441 * This class requests an Adapter for the WebTextView which shows past 3442 * entries stored in the database. It is a Runnable so that it can be done 3443 * in its own thread, without slowing down the UI. 3444 */ 3445 private class RequestFormData implements Runnable { 3446 private String mName; 3447 private String mUrl; 3448 private Message mUpdateMessage; 3449 3450 public RequestFormData(String name, String url, Message msg) { 3451 mName = name; 3452 mUrl = url; 3453 mUpdateMessage = msg; 3454 } 3455 3456 public void run() { 3457 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3458 if (pastEntries.size() > 0) { 3459 AutoCompleteAdapter adapter = new 3460 AutoCompleteAdapter(mContext, pastEntries); 3461 mUpdateMessage.obj = adapter; 3462 mUpdateMessage.sendToTarget(); 3463 } 3464 } 3465 } 3466 3467 /** 3468 * Dump the display tree to "/sdcard/displayTree.txt" 3469 * 3470 * @hide debug only 3471 */ 3472 public void dumpDisplayTree() { 3473 nativeDumpDisplayTree(getUrl()); 3474 } 3475 3476 /** 3477 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 3478 * "/sdcard/domTree.txt" 3479 * 3480 * @hide debug only 3481 */ 3482 public void dumpDomTree(boolean toFile) { 3483 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 3484 } 3485 3486 /** 3487 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 3488 * to "/sdcard/renderTree.txt" 3489 * 3490 * @hide debug only 3491 */ 3492 public void dumpRenderTree(boolean toFile) { 3493 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 3494 } 3495 3496 // This is used to determine long press with the center key. Does not 3497 // affect long press with the trackball/touch. 3498 private boolean mGotCenterDown = false; 3499 3500 @Override 3501 public boolean onKeyDown(int keyCode, KeyEvent event) { 3502 if (DebugFlags.WEB_VIEW) { 3503 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3504 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3505 } 3506 3507 if (mNativeClass == 0) { 3508 return false; 3509 } 3510 3511 // do this hack up front, so it always works, regardless of touch-mode 3512 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3513 mAutoRedraw = !mAutoRedraw; 3514 if (mAutoRedraw) { 3515 invalidate(); 3516 } 3517 return true; 3518 } 3519 3520 // Bubble up the key event if 3521 // 1. it is a system key; or 3522 // 2. the host application wants to handle it; 3523 if (event.isSystem() 3524 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3525 return false; 3526 } 3527 3528 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3529 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3530 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3531 setUpSelectXY(); 3532 } 3533 3534 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3535 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3536 // always handle the navigation keys in the UI thread 3537 switchOutDrawHistory(); 3538 if (mShiftIsPressed) { 3539 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 3540 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 3541 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 3542 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 3543 int multiplier = event.getRepeatCount() + 1; 3544 moveSelection(xRate * multiplier, yRate * multiplier); 3545 return true; 3546 } 3547 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3548 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3549 return true; 3550 } 3551 // Bubble up the key event as WebView doesn't handle it 3552 return false; 3553 } 3554 3555 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3556 switchOutDrawHistory(); 3557 if (event.getRepeatCount() == 0) { 3558 if (mShiftIsPressed) { 3559 return true; // discard press if copy in progress 3560 } 3561 mGotCenterDown = true; 3562 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3563 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3564 // Already checked mNativeClass, so we do not need to check it 3565 // again. 3566 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3567 return true; 3568 } 3569 // Bubble up the key event as WebView doesn't handle it 3570 return false; 3571 } 3572 3573 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3574 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3575 // turn off copy select if a shift-key combo is pressed 3576 mExtendSelection = mShiftIsPressed = false; 3577 if (mTouchMode == TOUCH_SELECT_MODE) { 3578 mTouchMode = TOUCH_INIT_MODE; 3579 } 3580 } 3581 3582 if (getSettings().getNavDump()) { 3583 switch (keyCode) { 3584 case KeyEvent.KEYCODE_4: 3585 dumpDisplayTree(); 3586 break; 3587 case KeyEvent.KEYCODE_5: 3588 case KeyEvent.KEYCODE_6: 3589 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 3590 break; 3591 case KeyEvent.KEYCODE_7: 3592 case KeyEvent.KEYCODE_8: 3593 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 3594 break; 3595 case KeyEvent.KEYCODE_9: 3596 nativeInstrumentReport(); 3597 return true; 3598 } 3599 } 3600 3601 if (nativeCursorIsTextInput()) { 3602 // This message will put the node in focus, for the DOM's notion 3603 // of focus, and make the focuscontroller active 3604 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3605 nativeCursorNodePointer()); 3606 // This will bring up the WebTextView and put it in focus, for 3607 // our view system's notion of focus 3608 rebuildWebTextView(); 3609 // Now we need to pass the event to it 3610 if (inEditingMode()) { 3611 mWebTextView.setDefaultSelection(); 3612 return mWebTextView.dispatchKeyEvent(event); 3613 } 3614 } else if (nativeHasFocusNode()) { 3615 // In this case, the cursor is not on a text input, but the focus 3616 // might be. Check it, and if so, hand over to the WebTextView. 3617 rebuildWebTextView(); 3618 if (inEditingMode()) { 3619 return mWebTextView.dispatchKeyEvent(event); 3620 } 3621 } 3622 3623 // TODO: should we pass all the keys to DOM or check the meta tag 3624 if (nativeCursorWantsKeyEvents() || true) { 3625 // pass the key to DOM 3626 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3627 // return true as DOM handles the key 3628 return true; 3629 } 3630 3631 // Bubble up the key event as WebView doesn't handle it 3632 return false; 3633 } 3634 3635 @Override 3636 public boolean onKeyUp(int keyCode, KeyEvent event) { 3637 if (DebugFlags.WEB_VIEW) { 3638 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3639 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3640 } 3641 3642 if (mNativeClass == 0) { 3643 return false; 3644 } 3645 3646 // special CALL handling when cursor node's href is "tel:XXX" 3647 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3648 String text = nativeCursorText(); 3649 if (!nativeCursorIsTextInput() && text != null 3650 && text.startsWith(SCHEME_TEL)) { 3651 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3652 getContext().startActivity(intent); 3653 return true; 3654 } 3655 } 3656 3657 // Bubble up the key event if 3658 // 1. it is a system key; or 3659 // 2. the host application wants to handle it; 3660 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3661 return false; 3662 } 3663 3664 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3665 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3666 if (commitCopy()) { 3667 return true; 3668 } 3669 } 3670 3671 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3672 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3673 // always handle the navigation keys in the UI thread 3674 // Bubble up the key event as WebView doesn't handle it 3675 return false; 3676 } 3677 3678 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3679 // remove the long press message first 3680 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3681 mGotCenterDown = false; 3682 3683 if (mShiftIsPressed) { 3684 if (mExtendSelection) { 3685 commitCopy(); 3686 } else { 3687 mExtendSelection = true; 3688 invalidate(); // draw the i-beam instead of the arrow 3689 } 3690 return true; // discard press if copy in progress 3691 } 3692 3693 // perform the single click 3694 Rect visibleRect = sendOurVisibleRect(); 3695 // Note that sendOurVisibleRect calls viewToContent, so the 3696 // coordinates should be in content coordinates. 3697 if (!nativeCursorIntersects(visibleRect)) { 3698 return false; 3699 } 3700 WebViewCore.CursorData data = cursorData(); 3701 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3702 playSoundEffect(SoundEffectConstants.CLICK); 3703 if (nativeCursorIsTextInput()) { 3704 rebuildWebTextView(); 3705 centerKeyPressOnTextField(); 3706 if (inEditingMode()) { 3707 mWebTextView.setDefaultSelection(); 3708 } 3709 return true; 3710 } 3711 nativeSetFollowedLink(true); 3712 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 3713 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3714 nativeCursorNodePointer()); 3715 } 3716 return true; 3717 } 3718 3719 // TODO: should we pass all the keys to DOM or check the meta tag 3720 if (nativeCursorWantsKeyEvents() || true) { 3721 // pass the key to DOM 3722 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3723 // return true as DOM handles the key 3724 return true; 3725 } 3726 3727 // Bubble up the key event as WebView doesn't handle it 3728 return false; 3729 } 3730 3731 private void setUpSelectXY() { 3732 mExtendSelection = false; 3733 mShiftIsPressed = true; 3734 if (nativeHasCursorNode()) { 3735 Rect rect = nativeCursorNodeBounds(); 3736 mSelectX = contentToViewX(rect.left); 3737 mSelectY = contentToViewY(rect.top); 3738 } else if (mLastTouchY > getVisibleTitleHeight()) { 3739 mSelectX = mScrollX + (int) mLastTouchX; 3740 mSelectY = mScrollY + (int) mLastTouchY; 3741 } else { 3742 mSelectX = mScrollX + getViewWidth() / 2; 3743 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 3744 } 3745 nativeHideCursor(); 3746 } 3747 3748 public void emulateShiftHeld() { 3749 if (0 == mNativeClass) return; // client isn't initialized 3750 setUpSelectXY(); 3751 } 3752 3753 private boolean commitCopy() { 3754 boolean copiedSomething = false; 3755 if (mExtendSelection) { 3756 String selection = nativeGetSelection(); 3757 if (selection != "") { 3758 if (DebugFlags.WEB_VIEW) { 3759 Log.v(LOGTAG, "commitCopy \"" + selection + "\""); 3760 } 3761 Toast.makeText(mContext 3762 , com.android.internal.R.string.text_copied 3763 , Toast.LENGTH_SHORT).show(); 3764 copiedSomething = true; 3765 try { 3766 IClipboard clip = IClipboard.Stub.asInterface( 3767 ServiceManager.getService("clipboard")); 3768 clip.setClipboardText(selection); 3769 } catch (android.os.RemoteException e) { 3770 Log.e(LOGTAG, "Clipboard failed", e); 3771 } 3772 } 3773 mExtendSelection = false; 3774 } 3775 mShiftIsPressed = false; 3776 invalidate(); // remove selection region and pointer 3777 if (mTouchMode == TOUCH_SELECT_MODE) { 3778 mTouchMode = TOUCH_INIT_MODE; 3779 } 3780 return copiedSomething; 3781 } 3782 3783 @Override 3784 protected void onAttachedToWindow() { 3785 super.onAttachedToWindow(); 3786 if (hasWindowFocus()) onWindowFocusChanged(true); 3787 } 3788 3789 @Override 3790 protected void onDetachedFromWindow() { 3791 clearTextEntry(); 3792 super.onDetachedFromWindow(); 3793 // Clean up the zoom controller 3794 mZoomButtonsController.setVisible(false); 3795 } 3796 3797 /** 3798 * @deprecated WebView no longer needs to implement 3799 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3800 */ 3801 @Deprecated 3802 public void onChildViewAdded(View parent, View child) {} 3803 3804 /** 3805 * @deprecated WebView no longer needs to implement 3806 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3807 */ 3808 @Deprecated 3809 public void onChildViewRemoved(View p, View child) {} 3810 3811 /** 3812 * @deprecated WebView should not have implemented 3813 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3814 * does nothing now. 3815 */ 3816 @Deprecated 3817 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3818 } 3819 3820 // To avoid drawing the cursor ring, and remove the TextView when our window 3821 // loses focus. 3822 @Override 3823 public void onWindowFocusChanged(boolean hasWindowFocus) { 3824 if (hasWindowFocus) { 3825 if (hasFocus()) { 3826 // If our window regained focus, and we have focus, then begin 3827 // drawing the cursor ring 3828 mDrawCursorRing = true; 3829 if (mNativeClass != 0) { 3830 nativeRecordButtons(true, false, true); 3831 if (inEditingMode()) { 3832 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3833 } 3834 } 3835 } else { 3836 // If our window gained focus, but we do not have it, do not 3837 // draw the cursor ring. 3838 mDrawCursorRing = false; 3839 // We do not call nativeRecordButtons here because we assume 3840 // that when we lost focus, or window focus, it got called with 3841 // false for the first parameter 3842 } 3843 } else { 3844 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3845 /* 3846 * The zoom controls come in their own window, so our window 3847 * loses focus. Our policy is to not draw the cursor ring if 3848 * our window is not focused, but this is an exception since 3849 * the user can still navigate the web page with the zoom 3850 * controls showing. 3851 */ 3852 // If our window has lost focus, stop drawing the cursor ring 3853 mDrawCursorRing = false; 3854 } 3855 mGotKeyDown = false; 3856 mShiftIsPressed = false; 3857 if (mNativeClass != 0) { 3858 nativeRecordButtons(false, false, true); 3859 } 3860 setFocusControllerInactive(); 3861 } 3862 invalidate(); 3863 super.onWindowFocusChanged(hasWindowFocus); 3864 } 3865 3866 /* 3867 * Pass a message to WebCore Thread, telling the WebCore::Page's 3868 * FocusController to be "inactive" so that it will 3869 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3870 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3871 */ 3872 /* package */ void setFocusControllerInactive() { 3873 // Do not need to also check whether mWebViewCore is null, because 3874 // mNativeClass is only set if mWebViewCore is non null 3875 if (mNativeClass == 0) return; 3876 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 3877 } 3878 3879 @Override 3880 protected void onFocusChanged(boolean focused, int direction, 3881 Rect previouslyFocusedRect) { 3882 if (DebugFlags.WEB_VIEW) { 3883 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3884 } 3885 if (focused) { 3886 // When we regain focus, if we have window focus, resume drawing 3887 // the cursor ring 3888 if (hasWindowFocus()) { 3889 mDrawCursorRing = true; 3890 if (mNativeClass != 0) { 3891 nativeRecordButtons(true, false, true); 3892 } 3893 //} else { 3894 // The WebView has gained focus while we do not have 3895 // windowfocus. When our window lost focus, we should have 3896 // called nativeRecordButtons(false...) 3897 } 3898 } else { 3899 // When we lost focus, unless focus went to the TextView (which is 3900 // true if we are in editing mode), stop drawing the cursor ring. 3901 if (!inEditingMode()) { 3902 mDrawCursorRing = false; 3903 if (mNativeClass != 0) { 3904 nativeRecordButtons(false, false, true); 3905 } 3906 setFocusControllerInactive(); 3907 } 3908 mGotKeyDown = false; 3909 } 3910 3911 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3912 } 3913 3914 /** 3915 * @hide 3916 */ 3917 @Override 3918 protected boolean setFrame(int left, int top, int right, int bottom) { 3919 boolean changed = super.setFrame(left, top, right, bottom); 3920 if (!changed && mHeightCanMeasure) { 3921 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 3922 // in WebViewCore after we get the first layout. We do call 3923 // requestLayout() when we get contentSizeChanged(). But the View 3924 // system won't call onSizeChanged if the dimension is not changed. 3925 // In this case, we need to call sendViewSizeZoom() explicitly to 3926 // notify the WebKit about the new dimensions. 3927 sendViewSizeZoom(); 3928 } 3929 return changed; 3930 } 3931 3932 private static class PostScale implements Runnable { 3933 final WebView mWebView; 3934 final boolean mUpdateTextWrap; 3935 3936 public PostScale(WebView webView, boolean updateTextWrap) { 3937 mWebView = webView; 3938 mUpdateTextWrap = updateTextWrap; 3939 } 3940 3941 public void run() { 3942 if (mWebView.mWebViewCore != null) { 3943 // we always force, in case our height changed, in which case we 3944 // still want to send the notification over to webkit. 3945 mWebView.setNewZoomScale(mWebView.mActualScale, 3946 mUpdateTextWrap, true); 3947 } 3948 } 3949 } 3950 3951 @Override 3952 protected void onSizeChanged(int w, int h, int ow, int oh) { 3953 super.onSizeChanged(w, h, ow, oh); 3954 // Center zooming to the center of the screen. 3955 if (mZoomScale == 0) { // unless we're already zooming 3956 // To anchor at top left corner. 3957 mZoomCenterX = 0; 3958 mZoomCenterY = getVisibleTitleHeight(); 3959 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 3960 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 3961 } 3962 3963 // adjust the max viewport width depending on the view dimensions. This 3964 // is to ensure the scaling is not going insane. So do not shrink it if 3965 // the view size is temporarily smaller, e.g. when soft keyboard is up. 3966 int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE); 3967 if (newMaxViewportWidth > sMaxViewportWidth) { 3968 sMaxViewportWidth = newMaxViewportWidth; 3969 } 3970 3971 // update mMinZoomScale if the minimum zoom scale is not fixed 3972 if (!mMinZoomScaleFixed) { 3973 // when change from narrow screen to wide screen, the new viewWidth 3974 // can be wider than the old content width. We limit the minimum 3975 // scale to 1.0f. The proper minimum scale will be calculated when 3976 // the new picture shows up. 3977 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 3978 / (mDrawHistory ? mHistoryPicture.getWidth() 3979 : mZoomOverviewWidth)); 3980 if (mInitialScaleInPercent > 0) { 3981 // limit the minZoomScale to the initialScale if it is set 3982 float initialScale = mInitialScaleInPercent / 100.0f; 3983 if (mMinZoomScale > initialScale) { 3984 mMinZoomScale = initialScale; 3985 } 3986 } 3987 } 3988 3989 // onSizeChanged() is called during WebView layout. And any 3990 // requestLayout() is blocked during layout. As setNewZoomScale() will 3991 // call its child View to reposition itself through ViewManager's 3992 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 3993 // <b/> 3994 // only update the text wrap scale if width changed. 3995 post(new PostScale(this, w != ow)); 3996 } 3997 3998 @Override 3999 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4000 super.onScrollChanged(l, t, oldl, oldt); 4001 sendOurVisibleRect(); 4002 } 4003 4004 4005 @Override 4006 public boolean dispatchKeyEvent(KeyEvent event) { 4007 boolean dispatch = true; 4008 4009 if (!inEditingMode()) { 4010 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4011 mGotKeyDown = true; 4012 } else { 4013 if (!mGotKeyDown) { 4014 /* 4015 * We got a key up for which we were not the recipient of 4016 * the original key down. Don't give it to the view. 4017 */ 4018 dispatch = false; 4019 } 4020 mGotKeyDown = false; 4021 } 4022 } 4023 4024 if (dispatch) { 4025 return super.dispatchKeyEvent(event); 4026 } else { 4027 // We didn't dispatch, so let something else handle the key 4028 return false; 4029 } 4030 } 4031 4032 // Here are the snap align logic: 4033 // 1. If it starts nearly horizontally or vertically, snap align; 4034 // 2. If there is a dramitic direction change, let it go; 4035 // 3. If there is a same direction back and forth, lock it. 4036 4037 // adjustable parameters 4038 private int mMinLockSnapReverseDistance; 4039 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4040 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4041 4042 private static int sign(float x) { 4043 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4044 } 4045 4046 // if the page can scroll <= this value, we won't allow the drag tracker 4047 // to have any effect. 4048 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4049 4050 private class DragTrackerHandler { 4051 private final DragTracker mProxy; 4052 private final float mStartY, mStartX; 4053 private final float mMinDY, mMinDX; 4054 private final float mMaxDY, mMaxDX; 4055 private float mCurrStretchY, mCurrStretchX; 4056 private int mSX, mSY; 4057 4058 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4059 mProxy = proxy; 4060 4061 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4062 int viewTop = getScrollY(); 4063 int viewBottom = viewTop + getHeight(); 4064 4065 mStartY = y; 4066 mMinDY = -viewTop; 4067 mMaxDY = docBottom - viewBottom; 4068 4069 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4070 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4071 " up/down= " + mMinDY + " " + mMaxDY); 4072 } 4073 4074 int docRight = computeHorizontalScrollRange(); 4075 int viewLeft = getScrollX(); 4076 int viewRight = viewLeft + getWidth(); 4077 mStartX = x; 4078 mMinDX = -viewLeft; 4079 mMaxDX = docRight - viewRight; 4080 4081 mProxy.onStartDrag(x, y); 4082 4083 // ensure we buildBitmap at least once 4084 mSX = -99999; 4085 } 4086 4087 private float computeStretch(float delta, float min, float max) { 4088 float stretch = 0; 4089 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4090 if (delta < min) { 4091 stretch = delta - min; 4092 } else if (delta > max) { 4093 stretch = delta - max; 4094 } 4095 } 4096 return stretch; 4097 } 4098 4099 public void dragTo(float x, float y) { 4100 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4101 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4102 4103 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4104 mCurrStretchX = sx; 4105 mCurrStretchY = sy; 4106 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4107 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4108 " " + sy); 4109 } 4110 if (mProxy.onStretchChange(sx, sy)) { 4111 invalidate(); 4112 } 4113 } 4114 } 4115 4116 public void stopDrag() { 4117 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4118 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag"); 4119 } 4120 mProxy.onStopDrag(); 4121 } 4122 4123 private int hiddenHeightOfTitleBar() { 4124 return getTitleHeight() - getVisibleTitleHeight(); 4125 } 4126 4127 // need a way to know if 565 or 8888 is the right config for 4128 // capturing the display and giving it to the drag proxy 4129 private Bitmap.Config offscreenBitmapConfig() { 4130 // hard code 565 for now 4131 return Bitmap.Config.RGB_565; 4132 } 4133 4134 /* If the tracker draws, then this returns true, otherwise it will 4135 return false, and draw nothing. 4136 */ 4137 public boolean draw(Canvas canvas) { 4138 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4139 int sx = getScrollX(); 4140 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4141 4142 if (mSX != sx || mSY != sy) { 4143 buildBitmap(sx, sy); 4144 mSX = sx; 4145 mSY = sy; 4146 } 4147 4148 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4149 canvas.translate(sx, sy); 4150 mProxy.onDraw(canvas); 4151 canvas.restoreToCount(count); 4152 return true; 4153 } 4154 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4155 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4156 mCurrStretchX + " " + mCurrStretchY); 4157 } 4158 return false; 4159 } 4160 4161 private void buildBitmap(int sx, int sy) { 4162 int w = getWidth(); 4163 int h = getViewHeight(); 4164 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4165 Canvas canvas = new Canvas(bm); 4166 canvas.translate(-sx, -sy); 4167 drawContent(canvas); 4168 4169 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4170 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4171 " " + sy + " " + w + " " + h); 4172 } 4173 mProxy.onBitmapChange(bm); 4174 } 4175 } 4176 4177 /** @hide */ 4178 public static class DragTracker { 4179 public void onStartDrag(float x, float y) {} 4180 public boolean onStretchChange(float sx, float sy) { 4181 // return true to have us inval the view 4182 return false; 4183 } 4184 public void onStopDrag() {} 4185 public void onBitmapChange(Bitmap bm) {} 4186 public void onDraw(Canvas canvas) {} 4187 } 4188 4189 /** @hide */ 4190 public DragTracker getDragTracker() { 4191 return mDragTracker; 4192 } 4193 4194 /** @hide */ 4195 public void setDragTracker(DragTracker tracker) { 4196 mDragTracker = tracker; 4197 } 4198 4199 private DragTracker mDragTracker; 4200 private DragTrackerHandler mDragTrackerHandler; 4201 4202 private class ScaleDetectorListener implements 4203 ScaleGestureDetector.OnScaleGestureListener { 4204 4205 public boolean onScaleBegin(ScaleGestureDetector detector) { 4206 // cancel the single touch handling 4207 cancelTouch(); 4208 if (mZoomButtonsController.isVisible()) { 4209 mZoomButtonsController.setVisible(false); 4210 } 4211 // reset the zoom overview mode so that the page won't auto grow 4212 mInZoomOverview = false; 4213 // If it is in password mode, turn it off so it does not draw 4214 // misplaced. 4215 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4216 mWebTextView.setInPassword(false); 4217 } 4218 return true; 4219 } 4220 4221 public void onScaleEnd(ScaleGestureDetector detector) { 4222 if (mPreviewZoomOnly) { 4223 mPreviewZoomOnly = false; 4224 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4225 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4226 // don't reflow when zoom in; when zoom out, do reflow if the 4227 // new scale is almost minimum scale; 4228 boolean reflowNow = (mActualScale - mMinZoomScale <= 0.01f) 4229 || ((mActualScale <= 0.8 * mTextWrapScale)); 4230 // force zoom after mPreviewZoomOnly is set to false so that the 4231 // new view size will be passed to the WebKit 4232 setNewZoomScale(mActualScale, reflowNow, true); 4233 // call invalidate() to draw without zoom filter 4234 invalidate(); 4235 } 4236 // adjust the edit text view if needed 4237 if (inEditingMode() && didUpdateTextViewBounds(false) 4238 && nativeFocusCandidateIsPassword()) { 4239 // If it is a password field, start drawing the 4240 // WebTextView once again. 4241 mWebTextView.setInPassword(true); 4242 } 4243 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4244 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4245 // may trigger the unwanted fling. 4246 mTouchMode = TOUCH_PINCH_DRAG; 4247 startTouch(detector.getFocusX(), detector.getFocusY(), 4248 mLastTouchTime); 4249 } 4250 4251 public boolean onScale(ScaleGestureDetector detector) { 4252 float scale = (float) (Math.round(detector.getScaleFactor() 4253 * mActualScale * 100) / 100.0); 4254 if (Math.abs(scale - mActualScale) >= PREVIEW_SCALE_INCREMENT) { 4255 mPreviewZoomOnly = true; 4256 // limit the scale change per step 4257 if (scale > mActualScale) { 4258 scale = Math.min(scale, mActualScale * 1.25f); 4259 } else { 4260 scale = Math.max(scale, mActualScale * 0.8f); 4261 } 4262 mZoomCenterX = detector.getFocusX(); 4263 mZoomCenterY = detector.getFocusY(); 4264 setNewZoomScale(scale, false, false); 4265 invalidate(); 4266 return true; 4267 } 4268 return false; 4269 } 4270 } 4271 4272 @Override 4273 public boolean onTouchEvent(MotionEvent ev) { 4274 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4275 return false; 4276 } 4277 4278 if (DebugFlags.WEB_VIEW) { 4279 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4280 + mTouchMode); 4281 } 4282 4283 int action; 4284 float x, y; 4285 long eventTime = ev.getEventTime(); 4286 4287 // FIXME: we may consider to give WebKit an option to handle multi-touch 4288 // events later. 4289 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 4290 if (mMinZoomScale < mMaxZoomScale) { 4291 mScaleDetector.onTouchEvent(ev); 4292 if (mScaleDetector.isInProgress()) { 4293 mLastTouchTime = eventTime; 4294 return true; 4295 } 4296 x = mScaleDetector.getFocusX(); 4297 y = mScaleDetector.getFocusY(); 4298 action = ev.getAction() & MotionEvent.ACTION_MASK; 4299 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4300 cancelTouch(); 4301 action = MotionEvent.ACTION_DOWN; 4302 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4303 // set mLastTouchX/Y to the remaining point 4304 mLastTouchX = x; 4305 mLastTouchY = y; 4306 } else if (action == MotionEvent.ACTION_MOVE) { 4307 // negative x or y indicate it is on the edge, skip it. 4308 if (x < 0 || y < 0) { 4309 return true; 4310 } 4311 } 4312 } else { 4313 // if the page disallow zoom, skip multi-pointer action 4314 return true; 4315 } 4316 } else { 4317 action = ev.getAction(); 4318 x = ev.getX(); 4319 y = ev.getY(); 4320 } 4321 4322 // Due to the touch screen edge effect, a touch closer to the edge 4323 // always snapped to the edge. As getViewWidth() can be different from 4324 // getWidth() due to the scrollbar, adjusting the point to match 4325 // getViewWidth(). Same applied to the height. 4326 if (x > getViewWidth() - 1) { 4327 x = getViewWidth() - 1; 4328 } 4329 if (y > getViewHeightWithTitle() - 1) { 4330 y = getViewHeightWithTitle() - 1; 4331 } 4332 4333 // pass the touch events from UI thread to WebCore thread 4334 if (mForwardTouchEvents && (action != MotionEvent.ACTION_MOVE 4335 || eventTime - mLastSentTouchTime > TOUCH_SENT_INTERVAL)) { 4336 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 4337 ted.mAction = action; 4338 ted.mX = viewToContentX((int) x + mScrollX); 4339 ted.mY = viewToContentY((int) y + mScrollY); 4340 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4341 mLastSentTouchTime = eventTime; 4342 } 4343 4344 float fDeltaX = mLastTouchX - x; 4345 float fDeltaY = mLastTouchY - y; 4346 int deltaX = (int) fDeltaX; 4347 int deltaY = (int) fDeltaY; 4348 4349 switch (action) { 4350 case MotionEvent.ACTION_DOWN: { 4351 mPreventDrag = PREVENT_DRAG_NO; 4352 if (!mScroller.isFinished()) { 4353 // stop the current scroll animation, but if this is 4354 // the start of a fling, allow it to add to the current 4355 // fling's velocity 4356 mScroller.abortAnimation(); 4357 mTouchMode = TOUCH_DRAG_START_MODE; 4358 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 4359 } else if (mShiftIsPressed) { 4360 mSelectX = mScrollX + (int) x; 4361 mSelectY = mScrollY + (int) y; 4362 mTouchMode = TOUCH_SELECT_MODE; 4363 if (DebugFlags.WEB_VIEW) { 4364 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 4365 } 4366 nativeMoveSelection(viewToContentX(mSelectX), 4367 viewToContentY(mSelectY), false); 4368 mTouchSelection = mExtendSelection = true; 4369 invalidate(); // draw the i-beam instead of the arrow 4370 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4371 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4372 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4373 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4374 } else { 4375 // commit the short press action for the previous tap 4376 doShortPress(); 4377 // continue, mTouchMode should be still TOUCH_INIT_MODE 4378 } 4379 } else { 4380 mPreviewZoomOnly = false; 4381 mTouchMode = TOUCH_INIT_MODE; 4382 mPreventDrag = mForwardTouchEvents ? PREVENT_DRAG_MAYBE_YES 4383 : PREVENT_DRAG_NO; 4384 mPreventLongPress = false; 4385 mPreventDoubleTap = false; 4386 mWebViewCore.sendMessage( 4387 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4388 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4389 EventLog.writeEvent(EVENT_LOG_DOUBLE_TAP_DURATION, 4390 (eventTime - mLastTouchUpTime), eventTime); 4391 } 4392 } 4393 // Trigger the link 4394 if (mTouchMode == TOUCH_INIT_MODE 4395 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4396 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4397 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 4398 } 4399 startTouch(x, y, eventTime); 4400 break; 4401 } 4402 case MotionEvent.ACTION_MOVE: { 4403 if (mTouchMode == TOUCH_DONE_MODE) { 4404 // no dragging during scroll zoom animation 4405 break; 4406 } 4407 mVelocityTracker.addMovement(ev); 4408 4409 if (mTouchMode != TOUCH_DRAG_MODE) { 4410 if (mTouchMode == TOUCH_SELECT_MODE) { 4411 mSelectX = mScrollX + (int) x; 4412 mSelectY = mScrollY + (int) y; 4413 if (DebugFlags.WEB_VIEW) { 4414 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 4415 } 4416 nativeMoveSelection(viewToContentX(mSelectX), 4417 viewToContentY(mSelectY), true); 4418 invalidate(); 4419 break; 4420 } 4421 if ((deltaX * deltaX + deltaY * deltaY) < mTouchSlopSquare) { 4422 break; 4423 } 4424 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 4425 // track mLastTouchTime as we may need to do fling at 4426 // ACTION_UP 4427 mLastTouchTime = eventTime; 4428 break; 4429 } 4430 if (mTouchMode == TOUCH_SHORTPRESS_MODE 4431 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4432 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4433 } else if (mTouchMode == TOUCH_INIT_MODE 4434 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4435 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4436 } 4437 if (mFullScreenHolder != null) { 4438 // in full screen mode, the WebView can't be panned. 4439 mTouchMode = TOUCH_DONE_MODE; 4440 break; 4441 } 4442 4443 // if it starts nearly horizontal or vertical, enforce it 4444 int ax = Math.abs(deltaX); 4445 int ay = Math.abs(deltaY); 4446 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4447 mSnapScrollMode = SNAP_X; 4448 mSnapPositive = deltaX > 0; 4449 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4450 mSnapScrollMode = SNAP_Y; 4451 mSnapPositive = deltaY > 0; 4452 } 4453 4454 mTouchMode = TOUCH_DRAG_MODE; 4455 mLastTouchX = x; 4456 mLastTouchY = y; 4457 fDeltaX = 0.0f; 4458 fDeltaY = 0.0f; 4459 deltaX = 0; 4460 deltaY = 0; 4461 4462 WebViewCore.reducePriority(); 4463 if (!mDragFromTextInput) { 4464 nativeHideCursor(); 4465 } 4466 WebSettings settings = getSettings(); 4467 if (settings.supportZoom() 4468 && settings.getBuiltInZoomControls() 4469 && !mZoomButtonsController.isVisible() 4470 && mMinZoomScale < mMaxZoomScale) { 4471 mZoomButtonsController.setVisible(true); 4472 int count = settings.getDoubleTapToastCount(); 4473 if (mInZoomOverview && count > 0) { 4474 settings.setDoubleTapToastCount(--count); 4475 Toast.makeText(mContext, 4476 com.android.internal.R.string.double_tap_toast, 4477 Toast.LENGTH_LONG).show(); 4478 } 4479 } 4480 } 4481 4482 // do pan 4483 int newScrollX = pinLocX(mScrollX + deltaX); 4484 int newDeltaX = newScrollX - mScrollX; 4485 if (deltaX != newDeltaX) { 4486 deltaX = newDeltaX; 4487 fDeltaX = (float) newDeltaX; 4488 } 4489 int newScrollY = pinLocY(mScrollY + deltaY); 4490 int newDeltaY = newScrollY - mScrollY; 4491 if (deltaY != newDeltaY) { 4492 deltaY = newDeltaY; 4493 fDeltaY = (float) newDeltaY; 4494 } 4495 boolean done = false; 4496 boolean keepScrollBarsVisible = false; 4497 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 4498 keepScrollBarsVisible = done = true; 4499 } else { 4500 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4501 int ax = Math.abs(deltaX); 4502 int ay = Math.abs(deltaY); 4503 if (mSnapScrollMode == SNAP_X) { 4504 // radical change means getting out of snap mode 4505 if (ay > MAX_SLOPE_FOR_DIAG * ax 4506 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4507 mSnapScrollMode = SNAP_NONE; 4508 } 4509 // reverse direction means lock in the snap mode 4510 if (ax > MAX_SLOPE_FOR_DIAG * ay && 4511 (mSnapPositive 4512 ? deltaX < -mMinLockSnapReverseDistance 4513 : deltaX > mMinLockSnapReverseDistance)) { 4514 mSnapScrollMode |= SNAP_LOCK; 4515 } 4516 } else { 4517 // radical change means getting out of snap mode 4518 if (ax > MAX_SLOPE_FOR_DIAG * ay 4519 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4520 mSnapScrollMode = SNAP_NONE; 4521 } 4522 // reverse direction means lock in the snap mode 4523 if (ay > MAX_SLOPE_FOR_DIAG * ax && 4524 (mSnapPositive 4525 ? deltaY < -mMinLockSnapReverseDistance 4526 : deltaY > mMinLockSnapReverseDistance)) { 4527 mSnapScrollMode |= SNAP_LOCK; 4528 } 4529 } 4530 } 4531 if (mSnapScrollMode != SNAP_NONE) { 4532 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 4533 deltaY = 0; 4534 } else { 4535 deltaX = 0; 4536 } 4537 } 4538 if ((deltaX | deltaY) != 0) { 4539 scrollBy(deltaX, deltaY); 4540 if (deltaX != 0) { 4541 mLastTouchX = x; 4542 } 4543 if (deltaY != 0) { 4544 mLastTouchY = y; 4545 } 4546 mHeldMotionless = MOTIONLESS_FALSE; 4547 } else { 4548 // keep the scrollbar on the screen even there is no 4549 // scroll 4550 keepScrollBarsVisible = true; 4551 } 4552 mLastTouchTime = eventTime; 4553 mUserScroll = true; 4554 } 4555 4556 if (!getSettings().getBuiltInZoomControls()) { 4557 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 4558 if (mZoomControls != null && showPlusMinus) { 4559 if (mZoomControls.getVisibility() == View.VISIBLE) { 4560 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4561 } else { 4562 mZoomControls.show(showPlusMinus, false); 4563 } 4564 mPrivateHandler.postDelayed(mZoomControlRunnable, 4565 ZOOM_CONTROLS_TIMEOUT); 4566 } 4567 } 4568 4569 if (mDragTrackerHandler != null) { 4570 mDragTrackerHandler.dragTo(x, y); 4571 } 4572 4573 if (keepScrollBarsVisible) { 4574 if (mHeldMotionless != MOTIONLESS_TRUE) { 4575 mHeldMotionless = MOTIONLESS_TRUE; 4576 invalidate(); 4577 } 4578 // keep the scrollbar on the screen even there is no scroll 4579 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 4580 false); 4581 // return false to indicate that we can't pan out of the 4582 // view space 4583 return !done; 4584 } 4585 break; 4586 } 4587 case MotionEvent.ACTION_UP: { 4588 if (mDragTrackerHandler != null) { 4589 mDragTrackerHandler.stopDrag(); 4590 mDragTrackerHandler = null; 4591 } 4592 mLastTouchUpTime = eventTime; 4593 switch (mTouchMode) { 4594 case TOUCH_DOUBLE_TAP_MODE: // double tap 4595 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4596 mTouchMode = TOUCH_DONE_MODE; 4597 if (mPreventDoubleTap) { 4598 WebViewCore.TouchEventData ted 4599 = new WebViewCore.TouchEventData(); 4600 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 4601 ted.mX = viewToContentX((int) x + mScrollX); 4602 ted.mY = viewToContentY((int) y + mScrollY); 4603 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4604 } else if (mFullScreenHolder == null) { 4605 doDoubleTap(); 4606 } 4607 break; 4608 case TOUCH_SELECT_MODE: 4609 commitCopy(); 4610 mTouchSelection = false; 4611 break; 4612 case TOUCH_INIT_MODE: // tap 4613 case TOUCH_SHORTPRESS_START_MODE: 4614 case TOUCH_SHORTPRESS_MODE: 4615 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4616 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4617 if ((deltaX * deltaX + deltaY * deltaY) > mTouchSlopSquare) { 4618 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 4619 " WebCore's response for touch down."); 4620 if (mFullScreenHolder == null 4621 && (computeHorizontalScrollExtent() < computeHorizontalScrollRange() 4622 || computeVerticalScrollExtent() < computeVerticalScrollRange())) { 4623 // we will not rewrite drag code here, but we 4624 // will try fling if it applies. 4625 WebViewCore.reducePriority(); 4626 // fall through to TOUCH_DRAG_MODE 4627 } else { 4628 break; 4629 } 4630 } else { 4631 // mPreventDrag can be PREVENT_DRAG_MAYBE_YES in 4632 // TOUCH_INIT_MODE. To give WebCoreThread a little 4633 // more time to send PREVENT_TOUCH_ID, we check 4634 // again in responding RELEASE_SINGLE_TAP. 4635 if (mPreventDrag != PREVENT_DRAG_YES) { 4636 if (mTouchMode == TOUCH_INIT_MODE) { 4637 mPrivateHandler.sendMessageDelayed( 4638 mPrivateHandler.obtainMessage( 4639 RELEASE_SINGLE_TAP), 4640 ViewConfiguration.getDoubleTapTimeout()); 4641 } else { 4642 mTouchMode = TOUCH_DONE_MODE; 4643 doShortPress(); 4644 } 4645 } 4646 break; 4647 } 4648 case TOUCH_DRAG_MODE: 4649 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4650 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4651 mHeldMotionless = MOTIONLESS_TRUE; 4652 // redraw in high-quality, as we're done dragging 4653 invalidate(); 4654 // if the user waits a while w/o moving before the 4655 // up, we don't want to do a fling 4656 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4657 mVelocityTracker.addMovement(ev); 4658 doFling(); 4659 break; 4660 } 4661 mLastVelocity = 0; 4662 WebViewCore.resumePriority(); 4663 break; 4664 case TOUCH_DRAG_START_MODE: 4665 case TOUCH_DONE_MODE: 4666 // do nothing 4667 break; 4668 } 4669 // we also use mVelocityTracker == null to tell us that we are 4670 // not "moving around", so we can take the slower/prettier 4671 // mode in the drawing code 4672 if (mVelocityTracker != null) { 4673 mVelocityTracker.recycle(); 4674 mVelocityTracker = null; 4675 } 4676 break; 4677 } 4678 case MotionEvent.ACTION_CANCEL: { 4679 cancelTouch(); 4680 break; 4681 } 4682 } 4683 return true; 4684 } 4685 4686 private void startTouch(float x, float y, long eventTime) { 4687 // Remember where the motion event started 4688 mLastTouchX = x; 4689 mLastTouchY = y; 4690 mLastTouchTime = eventTime; 4691 mVelocityTracker = VelocityTracker.obtain(); 4692 mSnapScrollMode = SNAP_NONE; 4693 if (mDragTracker != null) { 4694 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 4695 } 4696 } 4697 4698 private void cancelTouch() { 4699 if (mDragTrackerHandler != null) { 4700 mDragTrackerHandler.stopDrag(); 4701 mDragTrackerHandler = null; 4702 } 4703 // we also use mVelocityTracker == null to tell us that we are 4704 // not "moving around", so we can take the slower/prettier 4705 // mode in the drawing code 4706 if (mVelocityTracker != null) { 4707 mVelocityTracker.recycle(); 4708 mVelocityTracker = null; 4709 } 4710 if (mTouchMode == TOUCH_DRAG_MODE) { 4711 WebViewCore.resumePriority(); 4712 } 4713 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4714 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4715 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4716 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4717 mHeldMotionless = MOTIONLESS_TRUE; 4718 mTouchMode = TOUCH_DONE_MODE; 4719 nativeHideCursor(); 4720 } 4721 4722 private long mTrackballFirstTime = 0; 4723 private long mTrackballLastTime = 0; 4724 private float mTrackballRemainsX = 0.0f; 4725 private float mTrackballRemainsY = 0.0f; 4726 private int mTrackballXMove = 0; 4727 private int mTrackballYMove = 0; 4728 private boolean mExtendSelection = false; 4729 private boolean mTouchSelection = false; 4730 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4731 private static final int TRACKBALL_TIMEOUT = 200; 4732 private static final int TRACKBALL_WAIT = 100; 4733 private static final int TRACKBALL_SCALE = 400; 4734 private static final int TRACKBALL_SCROLL_COUNT = 5; 4735 private static final int TRACKBALL_MOVE_COUNT = 10; 4736 private static final int TRACKBALL_MULTIPLIER = 3; 4737 private static final int SELECT_CURSOR_OFFSET = 16; 4738 private int mSelectX = 0; 4739 private int mSelectY = 0; 4740 private boolean mFocusSizeChanged = false; 4741 private boolean mShiftIsPressed = false; 4742 private boolean mTrackballDown = false; 4743 private long mTrackballUpTime = 0; 4744 private long mLastCursorTime = 0; 4745 private Rect mLastCursorBounds; 4746 4747 // Set by default; BrowserActivity clears to interpret trackball data 4748 // directly for movement. Currently, the framework only passes 4749 // arrow key events, not trackball events, from one child to the next 4750 private boolean mMapTrackballToArrowKeys = true; 4751 4752 public void setMapTrackballToArrowKeys(boolean setMap) { 4753 mMapTrackballToArrowKeys = setMap; 4754 } 4755 4756 void resetTrackballTime() { 4757 mTrackballLastTime = 0; 4758 } 4759 4760 @Override 4761 public boolean onTrackballEvent(MotionEvent ev) { 4762 long time = ev.getEventTime(); 4763 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4764 if (ev.getY() > 0) pageDown(true); 4765 if (ev.getY() < 0) pageUp(true); 4766 return true; 4767 } 4768 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4769 if (mShiftIsPressed) { 4770 return true; // discard press if copy in progress 4771 } 4772 mTrackballDown = true; 4773 if (mNativeClass == 0) { 4774 return false; 4775 } 4776 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4777 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4778 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4779 nativeSelectBestAt(mLastCursorBounds); 4780 } 4781 if (DebugFlags.WEB_VIEW) { 4782 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4783 + " time=" + time 4784 + " mLastCursorTime=" + mLastCursorTime); 4785 } 4786 if (isInTouchMode()) requestFocusFromTouch(); 4787 return false; // let common code in onKeyDown at it 4788 } 4789 if (ev.getAction() == MotionEvent.ACTION_UP) { 4790 // LONG_PRESS_CENTER is set in common onKeyDown 4791 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4792 mTrackballDown = false; 4793 mTrackballUpTime = time; 4794 if (mShiftIsPressed) { 4795 if (mExtendSelection) { 4796 commitCopy(); 4797 } else { 4798 mExtendSelection = true; 4799 invalidate(); // draw the i-beam instead of the arrow 4800 } 4801 return true; // discard press if copy in progress 4802 } 4803 if (DebugFlags.WEB_VIEW) { 4804 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4805 + " time=" + time 4806 ); 4807 } 4808 return false; // let common code in onKeyUp at it 4809 } 4810 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4811 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4812 return false; 4813 } 4814 if (mTrackballDown) { 4815 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4816 return true; // discard move if trackball is down 4817 } 4818 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4819 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4820 return true; 4821 } 4822 // TODO: alternatively we can do panning as touch does 4823 switchOutDrawHistory(); 4824 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4825 if (DebugFlags.WEB_VIEW) { 4826 Log.v(LOGTAG, "onTrackballEvent time=" 4827 + time + " last=" + mTrackballLastTime); 4828 } 4829 mTrackballFirstTime = time; 4830 mTrackballXMove = mTrackballYMove = 0; 4831 } 4832 mTrackballLastTime = time; 4833 if (DebugFlags.WEB_VIEW) { 4834 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4835 } 4836 mTrackballRemainsX += ev.getX(); 4837 mTrackballRemainsY += ev.getY(); 4838 doTrackball(time); 4839 return true; 4840 } 4841 4842 void moveSelection(float xRate, float yRate) { 4843 if (mNativeClass == 0) 4844 return; 4845 int width = getViewWidth(); 4846 int height = getViewHeight(); 4847 mSelectX += xRate; 4848 mSelectY += yRate; 4849 int maxX = width + mScrollX; 4850 int maxY = height + mScrollY; 4851 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 4852 , mSelectX)); 4853 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 4854 , mSelectY)); 4855 if (DebugFlags.WEB_VIEW) { 4856 Log.v(LOGTAG, "moveSelection" 4857 + " mSelectX=" + mSelectX 4858 + " mSelectY=" + mSelectY 4859 + " mScrollX=" + mScrollX 4860 + " mScrollY=" + mScrollY 4861 + " xRate=" + xRate 4862 + " yRate=" + yRate 4863 ); 4864 } 4865 nativeMoveSelection(viewToContentX(mSelectX), 4866 viewToContentY(mSelectY), mExtendSelection); 4867 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 4868 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4869 : 0; 4870 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 4871 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4872 : 0; 4873 pinScrollBy(scrollX, scrollY, true, 0); 4874 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 4875 requestRectangleOnScreen(select); 4876 invalidate(); 4877 } 4878 4879 private int scaleTrackballX(float xRate, int width) { 4880 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4881 int nextXMove = xMove; 4882 if (xMove > 0) { 4883 if (xMove > mTrackballXMove) { 4884 xMove -= mTrackballXMove; 4885 } 4886 } else if (xMove < mTrackballXMove) { 4887 xMove -= mTrackballXMove; 4888 } 4889 mTrackballXMove = nextXMove; 4890 return xMove; 4891 } 4892 4893 private int scaleTrackballY(float yRate, int height) { 4894 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 4895 int nextYMove = yMove; 4896 if (yMove > 0) { 4897 if (yMove > mTrackballYMove) { 4898 yMove -= mTrackballYMove; 4899 } 4900 } else if (yMove < mTrackballYMove) { 4901 yMove -= mTrackballYMove; 4902 } 4903 mTrackballYMove = nextYMove; 4904 return yMove; 4905 } 4906 4907 private int keyCodeToSoundsEffect(int keyCode) { 4908 switch(keyCode) { 4909 case KeyEvent.KEYCODE_DPAD_UP: 4910 return SoundEffectConstants.NAVIGATION_UP; 4911 case KeyEvent.KEYCODE_DPAD_RIGHT: 4912 return SoundEffectConstants.NAVIGATION_RIGHT; 4913 case KeyEvent.KEYCODE_DPAD_DOWN: 4914 return SoundEffectConstants.NAVIGATION_DOWN; 4915 case KeyEvent.KEYCODE_DPAD_LEFT: 4916 return SoundEffectConstants.NAVIGATION_LEFT; 4917 } 4918 throw new IllegalArgumentException("keyCode must be one of " + 4919 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 4920 "KEYCODE_DPAD_LEFT}."); 4921 } 4922 4923 private void doTrackball(long time) { 4924 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 4925 if (elapsed == 0) { 4926 elapsed = TRACKBALL_TIMEOUT; 4927 } 4928 float xRate = mTrackballRemainsX * 1000 / elapsed; 4929 float yRate = mTrackballRemainsY * 1000 / elapsed; 4930 int viewWidth = getViewWidth(); 4931 int viewHeight = getViewHeight(); 4932 if (mShiftIsPressed) { 4933 moveSelection(scaleTrackballX(xRate, viewWidth), 4934 scaleTrackballY(yRate, viewHeight)); 4935 mTrackballRemainsX = mTrackballRemainsY = 0; 4936 return; 4937 } 4938 float ax = Math.abs(xRate); 4939 float ay = Math.abs(yRate); 4940 float maxA = Math.max(ax, ay); 4941 if (DebugFlags.WEB_VIEW) { 4942 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 4943 + " xRate=" + xRate 4944 + " yRate=" + yRate 4945 + " mTrackballRemainsX=" + mTrackballRemainsX 4946 + " mTrackballRemainsY=" + mTrackballRemainsY); 4947 } 4948 int width = mContentWidth - viewWidth; 4949 int height = mContentHeight - viewHeight; 4950 if (width < 0) width = 0; 4951 if (height < 0) height = 0; 4952 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 4953 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 4954 maxA = Math.max(ax, ay); 4955 int count = Math.max(0, (int) maxA); 4956 int oldScrollX = mScrollX; 4957 int oldScrollY = mScrollY; 4958 if (count > 0) { 4959 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 4960 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 4961 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 4962 KeyEvent.KEYCODE_DPAD_RIGHT; 4963 count = Math.min(count, TRACKBALL_MOVE_COUNT); 4964 if (DebugFlags.WEB_VIEW) { 4965 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 4966 + " count=" + count 4967 + " mTrackballRemainsX=" + mTrackballRemainsX 4968 + " mTrackballRemainsY=" + mTrackballRemainsY); 4969 } 4970 if (navHandledKey(selectKeyCode, count, false, time, false)) { 4971 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 4972 } 4973 mTrackballRemainsX = mTrackballRemainsY = 0; 4974 } 4975 if (count >= TRACKBALL_SCROLL_COUNT) { 4976 int xMove = scaleTrackballX(xRate, width); 4977 int yMove = scaleTrackballY(yRate, height); 4978 if (DebugFlags.WEB_VIEW) { 4979 Log.v(LOGTAG, "doTrackball pinScrollBy" 4980 + " count=" + count 4981 + " xMove=" + xMove + " yMove=" + yMove 4982 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 4983 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 4984 ); 4985 } 4986 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 4987 xMove = 0; 4988 } 4989 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 4990 yMove = 0; 4991 } 4992 if (xMove != 0 || yMove != 0) { 4993 pinScrollBy(xMove, yMove, true, 0); 4994 } 4995 mUserScroll = true; 4996 } 4997 } 4998 4999 private int computeMaxScrollY() { 5000 int maxContentH = computeVerticalScrollRange() + getTitleHeight(); 5001 return Math.max(maxContentH - getViewHeightWithTitle(), getTitleHeight()); 5002 } 5003 5004 public void flingScroll(int vx, int vy) { 5005 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5006 int maxY = computeMaxScrollY(); 5007 5008 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 5009 invalidate(); 5010 } 5011 5012 private void doFling() { 5013 if (mVelocityTracker == null) { 5014 return; 5015 } 5016 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5017 int maxY = computeMaxScrollY(); 5018 5019 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5020 int vx = (int) mVelocityTracker.getXVelocity(); 5021 int vy = (int) mVelocityTracker.getYVelocity(); 5022 5023 if (mSnapScrollMode != SNAP_NONE) { 5024 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5025 vy = 0; 5026 } else { 5027 vx = 0; 5028 } 5029 } 5030 5031 if (true /* EMG release: make our fling more like Maps' */) { 5032 // maps cuts their velocity in half 5033 vx = vx * 3 / 4; 5034 vy = vy * 3 / 4; 5035 } 5036 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5037 WebViewCore.resumePriority(); 5038 return; 5039 } 5040 float currentVelocity = mScroller.getCurrVelocity(); 5041 if (mLastVelocity > 0 && currentVelocity > 0) { 5042 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5043 - Math.atan2(vy, vx))); 5044 final float circle = (float) (Math.PI) * 2.0f; 5045 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5046 vx += currentVelocity * mLastVelX / mLastVelocity; 5047 vy += currentVelocity * mLastVelY / mLastVelocity; 5048 if (DebugFlags.WEB_VIEW) { 5049 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5050 } 5051 } else if (DebugFlags.WEB_VIEW) { 5052 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5053 } 5054 } else if (DebugFlags.WEB_VIEW) { 5055 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5056 + " current=" + currentVelocity 5057 + " vx=" + vx + " vy=" + vy 5058 + " maxX=" + maxX + " maxY=" + maxY 5059 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5060 } 5061 mLastVelX = vx; 5062 mLastVelY = vy; 5063 mLastVelocity = (float) Math.hypot(vx, vy); 5064 5065 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 5066 // TODO: duration is calculated based on velocity, if the range is 5067 // small, the animation will stop before duration is up. We may 5068 // want to calculate how long the animation is going to run to precisely 5069 // resume the webcore update. 5070 final int time = mScroller.getDuration(); 5071 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5072 awakenScrollBars(time); 5073 invalidate(); 5074 } 5075 5076 private boolean zoomWithPreview(float scale) { 5077 float oldScale = mActualScale; 5078 mInitialScrollX = mScrollX; 5079 mInitialScrollY = mScrollY; 5080 5081 // snap to DEFAULT_SCALE if it is close 5082 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 5083 scale = mDefaultScale; 5084 } 5085 5086 setNewZoomScale(scale, true, false); 5087 5088 if (oldScale != mActualScale) { 5089 // use mZoomPickerScale to see zoom preview first 5090 mZoomStart = SystemClock.uptimeMillis(); 5091 mInvInitialZoomScale = 1.0f / oldScale; 5092 mInvFinalZoomScale = 1.0f / mActualScale; 5093 mZoomScale = mActualScale; 5094 WebViewCore.pauseUpdatePicture(mWebViewCore); 5095 invalidate(); 5096 return true; 5097 } else { 5098 return false; 5099 } 5100 } 5101 5102 /** 5103 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5104 * in charge of installing this view to the view hierarchy. This view will 5105 * become visible when the user starts scrolling via touch and fade away if 5106 * the user does not interact with it. 5107 * <p/> 5108 * API version 3 introduces a built-in zoom mechanism that is shown 5109 * automatically by the MapView. This is the preferred approach for 5110 * showing the zoom UI. 5111 * 5112 * @deprecated The built-in zoom mechanism is preferred, see 5113 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5114 */ 5115 @Deprecated 5116 public View getZoomControls() { 5117 if (!getSettings().supportZoom()) { 5118 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5119 return null; 5120 } 5121 if (mZoomControls == null) { 5122 mZoomControls = createZoomControls(); 5123 5124 /* 5125 * need to be set to VISIBLE first so that getMeasuredHeight() in 5126 * {@link #onSizeChanged()} can return the measured value for proper 5127 * layout. 5128 */ 5129 mZoomControls.setVisibility(View.VISIBLE); 5130 mZoomControlRunnable = new Runnable() { 5131 public void run() { 5132 5133 /* Don't dismiss the controls if the user has 5134 * focus on them. Wait and check again later. 5135 */ 5136 if (!mZoomControls.hasFocus()) { 5137 mZoomControls.hide(); 5138 } else { 5139 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5140 mPrivateHandler.postDelayed(mZoomControlRunnable, 5141 ZOOM_CONTROLS_TIMEOUT); 5142 } 5143 } 5144 }; 5145 } 5146 return mZoomControls; 5147 } 5148 5149 private ExtendedZoomControls createZoomControls() { 5150 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 5151 , null); 5152 zoomControls.setOnZoomInClickListener(new OnClickListener() { 5153 public void onClick(View v) { 5154 // reset time out 5155 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5156 mPrivateHandler.postDelayed(mZoomControlRunnable, 5157 ZOOM_CONTROLS_TIMEOUT); 5158 zoomIn(); 5159 } 5160 }); 5161 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 5162 public void onClick(View v) { 5163 // reset time out 5164 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5165 mPrivateHandler.postDelayed(mZoomControlRunnable, 5166 ZOOM_CONTROLS_TIMEOUT); 5167 zoomOut(); 5168 } 5169 }); 5170 return zoomControls; 5171 } 5172 5173 /** 5174 * Gets the {@link ZoomButtonsController} which can be used to add 5175 * additional buttons to the zoom controls window. 5176 * 5177 * @return The instance of {@link ZoomButtonsController} used by this class, 5178 * or null if it is unavailable. 5179 * @hide 5180 */ 5181 public ZoomButtonsController getZoomButtonsController() { 5182 return mZoomButtonsController; 5183 } 5184 5185 /** 5186 * Perform zoom in in the webview 5187 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 5188 */ 5189 public boolean zoomIn() { 5190 // TODO: alternatively we can disallow this during draw history mode 5191 switchOutDrawHistory(); 5192 mInZoomOverview = false; 5193 // Center zooming to the center of the screen. 5194 mZoomCenterX = getViewWidth() * .5f; 5195 mZoomCenterY = getViewHeight() * .5f; 5196 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5197 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5198 return zoomWithPreview(mActualScale * 1.25f); 5199 } 5200 5201 /** 5202 * Perform zoom out in the webview 5203 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 5204 */ 5205 public boolean zoomOut() { 5206 // TODO: alternatively we can disallow this during draw history mode 5207 switchOutDrawHistory(); 5208 // Center zooming to the center of the screen. 5209 mZoomCenterX = getViewWidth() * .5f; 5210 mZoomCenterY = getViewHeight() * .5f; 5211 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5212 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5213 return zoomWithPreview(mActualScale * 0.8f); 5214 } 5215 5216 private void updateSelection() { 5217 if (mNativeClass == 0) { 5218 return; 5219 } 5220 // mLastTouchX and mLastTouchY are the point in the current viewport 5221 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5222 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5223 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 5224 contentX + mNavSlop, contentY + mNavSlop); 5225 nativeSelectBestAt(rect); 5226 } 5227 5228 /** 5229 * Scroll the focused text field/area to match the WebTextView 5230 * @param xPercent New x position of the WebTextView from 0 to 1. 5231 * @param y New y position of the WebTextView in view coordinates 5232 */ 5233 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 5234 if (!inEditingMode() || mWebViewCore == null) { 5235 return; 5236 } 5237 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 5238 // Since this position is relative to the top of the text input 5239 // field, we do not need to take the title bar's height into 5240 // consideration. 5241 viewToContentDimension(y), 5242 new Float(xPercent)); 5243 } 5244 5245 /** 5246 * Set our starting point and time for a drag from the WebTextView. 5247 */ 5248 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 5249 if (!inEditingMode()) { 5250 return; 5251 } 5252 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 5253 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 5254 mLastTouchTime = eventTime; 5255 if (!mScroller.isFinished()) { 5256 abortAnimation(); 5257 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5258 } 5259 mSnapScrollMode = SNAP_NONE; 5260 mVelocityTracker = VelocityTracker.obtain(); 5261 mTouchMode = TOUCH_DRAG_START_MODE; 5262 } 5263 5264 /** 5265 * Given a motion event from the WebTextView, set its location to our 5266 * coordinates, and handle the event. 5267 */ 5268 /*package*/ boolean textFieldDrag(MotionEvent event) { 5269 if (!inEditingMode()) { 5270 return false; 5271 } 5272 mDragFromTextInput = true; 5273 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 5274 (float) (mWebTextView.getTop() - mScrollY)); 5275 boolean result = onTouchEvent(event); 5276 mDragFromTextInput = false; 5277 return result; 5278 } 5279 5280 /** 5281 * Due a touch up from a WebTextView. This will be handled by webkit to 5282 * change the selection. 5283 * @param event MotionEvent in the WebTextView's coordinates. 5284 */ 5285 /*package*/ void touchUpOnTextField(MotionEvent event) { 5286 if (!inEditingMode()) { 5287 return; 5288 } 5289 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 5290 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 5291 nativeMotionUp(x, y, mNavSlop); 5292 } 5293 5294 /** 5295 * Called when pressing the center key or trackball on a textfield. 5296 */ 5297 /*package*/ void centerKeyPressOnTextField() { 5298 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 5299 nativeCursorNodePointer()); 5300 } 5301 5302 private void doShortPress() { 5303 if (mNativeClass == 0) { 5304 return; 5305 } 5306 switchOutDrawHistory(); 5307 // mLastTouchX and mLastTouchY are the point in the current viewport 5308 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5309 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5310 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 5311 WebViewCore.MotionUpData motionUpData = new WebViewCore 5312 .MotionUpData(); 5313 motionUpData.mFrame = nativeCacheHitFramePointer(); 5314 motionUpData.mNode = nativeCacheHitNodePointer(); 5315 motionUpData.mBounds = nativeCacheHitNodeBounds(); 5316 motionUpData.mX = contentX; 5317 motionUpData.mY = contentY; 5318 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 5319 motionUpData); 5320 } else { 5321 doMotionUp(contentX, contentY); 5322 } 5323 } 5324 5325 private void doMotionUp(int contentX, int contentY) { 5326 if (nativeMotionUp(contentX, contentY, mNavSlop)) { 5327 if (mLogEvent) { 5328 Checkin.updateStats(mContext.getContentResolver(), 5329 Checkin.Stats.Tag.BROWSER_SNAP_CENTER, 1, 0.0); 5330 } 5331 } 5332 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 5333 playSoundEffect(SoundEffectConstants.CLICK); 5334 } 5335 } 5336 5337 // Rule for double tap: 5338 // 1. if the current scale is not same as the text wrap scale and layout 5339 // algorithm is NARROW_COLUMNS, fit to column; 5340 // 2. if the current state is not overview mode, change to overview mode; 5341 // 3. if the current state is overview mode, change to default scale. 5342 private void doDoubleTap() { 5343 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 5344 return; 5345 } 5346 mZoomCenterX = mLastTouchX; 5347 mZoomCenterY = mLastTouchY; 5348 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5349 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5350 WebSettings settings = getSettings(); 5351 // remove the zoom control after double tap 5352 if (settings.getBuiltInZoomControls()) { 5353 if (mZoomButtonsController.isVisible()) { 5354 mZoomButtonsController.setVisible(false); 5355 } 5356 } else { 5357 if (mZoomControlRunnable != null) { 5358 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5359 } 5360 if (mZoomControls != null) { 5361 mZoomControls.hide(); 5362 } 5363 } 5364 settings.setDoubleTapToastCount(0); 5365 boolean zoomToDefault = false; 5366 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 5367 && (Math.abs(mActualScale - mTextWrapScale) >= 0.01f)) { 5368 setNewZoomScale(mActualScale, true, true); 5369 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 5370 if (Math.abs(mActualScale - overviewScale) < 0.01f) { 5371 mInZoomOverview = true; 5372 } 5373 } else if (!mInZoomOverview) { 5374 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 5375 if (Math.abs(mActualScale - newScale) >= 0.01f) { 5376 mInZoomOverview = true; 5377 // Force the titlebar fully reveal in overview mode 5378 if (mScrollY < getTitleHeight()) mScrollY = 0; 5379 zoomWithPreview(newScale); 5380 } else if (Math.abs(mActualScale - mDefaultScale) >= 0.01f) { 5381 zoomToDefault = true; 5382 } 5383 } else { 5384 zoomToDefault = true; 5385 } 5386 if (zoomToDefault) { 5387 mInZoomOverview = false; 5388 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 5389 if (left != NO_LEFTEDGE) { 5390 // add a 5pt padding to the left edge. 5391 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 5392 - mScrollX; 5393 // Re-calculate the zoom center so that the new scroll x will be 5394 // on the left edge. 5395 if (viewLeft > 0) { 5396 mZoomCenterX = viewLeft * mDefaultScale 5397 / (mDefaultScale - mActualScale); 5398 } else { 5399 scrollBy(viewLeft, 0); 5400 mZoomCenterX = 0; 5401 } 5402 } 5403 zoomWithPreview(mDefaultScale); 5404 } 5405 } 5406 5407 // Called by JNI to handle a touch on a node representing an email address, 5408 // address, or phone number 5409 private void overrideLoading(String url) { 5410 mCallbackProxy.uiOverrideUrlLoading(url); 5411 } 5412 5413 @Override 5414 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 5415 boolean result = false; 5416 if (inEditingMode()) { 5417 result = mWebTextView.requestFocus(direction, 5418 previouslyFocusedRect); 5419 } else { 5420 result = super.requestFocus(direction, previouslyFocusedRect); 5421 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 5422 // For cases such as GMail, where we gain focus from a direction, 5423 // we want to move to the first available link. 5424 // FIXME: If there are no visible links, we may not want to 5425 int fakeKeyDirection = 0; 5426 switch(direction) { 5427 case View.FOCUS_UP: 5428 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 5429 break; 5430 case View.FOCUS_DOWN: 5431 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 5432 break; 5433 case View.FOCUS_LEFT: 5434 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 5435 break; 5436 case View.FOCUS_RIGHT: 5437 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 5438 break; 5439 default: 5440 return result; 5441 } 5442 if (mNativeClass != 0 && !nativeHasCursorNode()) { 5443 navHandledKey(fakeKeyDirection, 1, true, 0, true); 5444 } 5445 } 5446 } 5447 return result; 5448 } 5449 5450 @Override 5451 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5452 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 5453 5454 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5455 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5456 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5457 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5458 5459 int measuredHeight = heightSize; 5460 int measuredWidth = widthSize; 5461 5462 // Grab the content size from WebViewCore. 5463 int contentHeight = contentToViewDimension(mContentHeight); 5464 int contentWidth = contentToViewDimension(mContentWidth); 5465 5466// Log.d(LOGTAG, "------- measure " + heightMode); 5467 5468 if (heightMode != MeasureSpec.EXACTLY) { 5469 mHeightCanMeasure = true; 5470 measuredHeight = contentHeight; 5471 if (heightMode == MeasureSpec.AT_MOST) { 5472 // If we are larger than the AT_MOST height, then our height can 5473 // no longer be measured and we should scroll internally. 5474 if (measuredHeight > heightSize) { 5475 measuredHeight = heightSize; 5476 mHeightCanMeasure = false; 5477 } 5478 } 5479 } else { 5480 mHeightCanMeasure = false; 5481 } 5482 if (mNativeClass != 0) { 5483 nativeSetHeightCanMeasure(mHeightCanMeasure); 5484 } 5485 // For the width, always use the given size unless unspecified. 5486 if (widthMode == MeasureSpec.UNSPECIFIED) { 5487 mWidthCanMeasure = true; 5488 measuredWidth = contentWidth; 5489 } else { 5490 mWidthCanMeasure = false; 5491 } 5492 5493 synchronized (this) { 5494 setMeasuredDimension(measuredWidth, measuredHeight); 5495 } 5496 } 5497 5498 @Override 5499 public boolean requestChildRectangleOnScreen(View child, 5500 Rect rect, 5501 boolean immediate) { 5502 rect.offset(child.getLeft() - child.getScrollX(), 5503 child.getTop() - child.getScrollY()); 5504 5505 int height = getViewHeightWithTitle(); 5506 int screenTop = mScrollY; 5507 int screenBottom = screenTop + height; 5508 5509 int scrollYDelta = 0; 5510 5511 if (rect.bottom > screenBottom) { 5512 int oneThirdOfScreenHeight = height / 3; 5513 if (rect.height() > 2 * oneThirdOfScreenHeight) { 5514 // If the rectangle is too tall to fit in the bottom two thirds 5515 // of the screen, place it at the top. 5516 scrollYDelta = rect.top - screenTop; 5517 } else { 5518 // If the rectangle will still fit on screen, we want its 5519 // top to be in the top third of the screen. 5520 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 5521 } 5522 } else if (rect.top < screenTop) { 5523 scrollYDelta = rect.top - screenTop; 5524 } 5525 5526 int width = getWidth() - getVerticalScrollbarWidth(); 5527 int screenLeft = mScrollX; 5528 int screenRight = screenLeft + width; 5529 5530 int scrollXDelta = 0; 5531 5532 if (rect.right > screenRight && rect.left > screenLeft) { 5533 if (rect.width() > width) { 5534 scrollXDelta += (rect.left - screenLeft); 5535 } else { 5536 scrollXDelta += (rect.right - screenRight); 5537 } 5538 } else if (rect.left < screenLeft) { 5539 scrollXDelta -= (screenLeft - rect.left); 5540 } 5541 5542 if ((scrollYDelta | scrollXDelta) != 0) { 5543 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 5544 } 5545 5546 return false; 5547 } 5548 5549 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 5550 String replace, int newStart, int newEnd) { 5551 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 5552 arg.mReplace = replace; 5553 arg.mNewStart = newStart; 5554 arg.mNewEnd = newEnd; 5555 mTextGeneration++; 5556 arg.mTextGeneration = mTextGeneration; 5557 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 5558 } 5559 5560 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 5561 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 5562 arg.mEvent = event; 5563 arg.mCurrentText = currentText; 5564 // Increase our text generation number, and pass it to webcore thread 5565 mTextGeneration++; 5566 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 5567 // WebKit's document state is not saved until about to leave the page. 5568 // To make sure the host application, like Browser, has the up to date 5569 // document state when it goes to background, we force to save the 5570 // document state. 5571 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 5572 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 5573 cursorData(), 1000); 5574 } 5575 5576 /* package */ WebViewCore getWebViewCore() { 5577 return mWebViewCore; 5578 } 5579 5580 //------------------------------------------------------------------------- 5581 // Methods can be called from a separate thread, like WebViewCore 5582 // If it needs to call the View system, it has to send message. 5583 //------------------------------------------------------------------------- 5584 5585 /** 5586 * General handler to receive message coming from webkit thread 5587 */ 5588 class PrivateHandler extends Handler { 5589 @Override 5590 public void handleMessage(Message msg) { 5591 // exclude INVAL_RECT_MSG_ID since it is frequently output 5592 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 5593 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 5594 > FIND_AGAIN ? Integer.toString(msg.what) 5595 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 5596 } 5597 if (mWebViewCore == null) { 5598 // after WebView's destroy() is called, skip handling messages. 5599 return; 5600 } 5601 switch (msg.what) { 5602 case REMEMBER_PASSWORD: { 5603 mDatabase.setUsernamePassword( 5604 msg.getData().getString("host"), 5605 msg.getData().getString("username"), 5606 msg.getData().getString("password")); 5607 ((Message) msg.obj).sendToTarget(); 5608 break; 5609 } 5610 case NEVER_REMEMBER_PASSWORD: { 5611 mDatabase.setUsernamePassword( 5612 msg.getData().getString("host"), null, null); 5613 ((Message) msg.obj).sendToTarget(); 5614 break; 5615 } 5616 case SWITCH_TO_SHORTPRESS: { 5617 // if mPreventDrag is not confirmed, treat it as no so that 5618 // it won't block panning the page. 5619 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5620 mPreventDrag = PREVENT_DRAG_NO; 5621 mPreventLongPress = false; 5622 mPreventDoubleTap = false; 5623 } 5624 if (mTouchMode == TOUCH_INIT_MODE) { 5625 mTouchMode = mFullScreenHolder == null 5626 ? TOUCH_SHORTPRESS_START_MODE 5627 : TOUCH_SHORTPRESS_MODE; 5628 updateSelection(); 5629 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5630 mTouchMode = TOUCH_DONE_MODE; 5631 } 5632 break; 5633 } 5634 case SWITCH_TO_LONGPRESS: { 5635 if (mPreventLongPress) { 5636 mTouchMode = TOUCH_DONE_MODE; 5637 WebViewCore.TouchEventData ted 5638 = new WebViewCore.TouchEventData(); 5639 ted.mAction = WebViewCore.ACTION_LONGPRESS; 5640 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 5641 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 5642 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5643 } else if (mPreventDrag == PREVENT_DRAG_NO) { 5644 mTouchMode = TOUCH_DONE_MODE; 5645 if (mFullScreenHolder == null) { 5646 performLongClick(); 5647 rebuildWebTextView(); 5648 } 5649 } 5650 break; 5651 } 5652 case RELEASE_SINGLE_TAP: { 5653 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5654 // if mPreventDrag is not confirmed, treat it as 5655 // no so that it won't block tap. 5656 mPreventDrag = PREVENT_DRAG_NO; 5657 mPreventLongPress = false; 5658 mPreventDoubleTap = false; 5659 } 5660 if (mPreventDrag == PREVENT_DRAG_NO) { 5661 mTouchMode = TOUCH_DONE_MODE; 5662 doShortPress(); 5663 } 5664 break; 5665 } 5666 case SCROLL_BY_MSG_ID: 5667 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 5668 break; 5669 case SYNC_SCROLL_TO_MSG_ID: 5670 if (mUserScroll) { 5671 // if user has scrolled explicitly, don't sync the 5672 // scroll position any more 5673 mUserScroll = false; 5674 break; 5675 } 5676 // fall through 5677 case SCROLL_TO_MSG_ID: 5678 if (setContentScrollTo(msg.arg1, msg.arg2)) { 5679 // if we can't scroll to the exact position due to pin, 5680 // send a message to WebCore to re-scroll when we get a 5681 // new picture 5682 mUserScroll = false; 5683 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 5684 msg.arg1, msg.arg2); 5685 } 5686 break; 5687 case SPAWN_SCROLL_TO_MSG_ID: 5688 spawnContentScrollTo(msg.arg1, msg.arg2); 5689 break; 5690 case UPDATE_ZOOM_RANGE: { 5691 WebViewCore.RestoreState restoreState 5692 = (WebViewCore.RestoreState) msg.obj; 5693 // mScrollX contains the new minPrefWidth 5694 updateZoomRange(restoreState, getViewWidth(), 5695 restoreState.mScrollX, false); 5696 break; 5697 } 5698 case NEW_PICTURE_MSG_ID: { 5699 WebSettings settings = mWebViewCore.getSettings(); 5700 // called for new content 5701 final int viewWidth = getViewWidth(); 5702 final WebViewCore.DrawData draw = 5703 (WebViewCore.DrawData) msg.obj; 5704 final Point viewSize = draw.mViewPoint; 5705 boolean useWideViewport = settings.getUseWideViewPort(); 5706 WebViewCore.RestoreState restoreState = draw.mRestoreState; 5707 boolean hasRestoreState = restoreState != null; 5708 if (hasRestoreState) { 5709 mInZoomOverview = false; 5710 updateZoomRange(restoreState, viewSize.x, 5711 draw.mMinPrefWidth, true); 5712 if (mInitialScaleInPercent > 0) { 5713 setNewZoomScale(mInitialScaleInPercent / 100.0f, 5714 mInitialScaleInPercent != mTextWrapScale * 100, 5715 false); 5716 } else if (restoreState.mViewScale > 0) { 5717 mTextWrapScale = restoreState.mTextWrapScale; 5718 setNewZoomScale(restoreState.mViewScale, false, 5719 false); 5720 } else { 5721 mInZoomOverview = useWideViewport 5722 && settings.getLoadWithOverviewMode(); 5723 float scale; 5724 if (mInZoomOverview) { 5725 scale = (float) viewWidth 5726 / DEFAULT_VIEWPORT_WIDTH; 5727 } else { 5728 scale = restoreState.mTextWrapScale; 5729 } 5730 setNewZoomScale(scale, Math.abs(scale 5731 - mTextWrapScale) >= 0.01f, false); 5732 } 5733 setContentScrollTo(restoreState.mScrollX, 5734 restoreState.mScrollY); 5735 // As we are on a new page, remove the WebTextView. This 5736 // is necessary for page loads driven by webkit, and in 5737 // particular when the user was on a password field, so 5738 // the WebTextView was visible. 5739 clearTextEntry(); 5740 // update the zoom buttons as the scale can be changed 5741 if (getSettings().getBuiltInZoomControls()) { 5742 updateZoomButtonsEnabled(); 5743 } 5744 } 5745 // We update the layout (i.e. request a layout from the 5746 // view system) if the last view size that we sent to 5747 // WebCore matches the view size of the picture we just 5748 // received in the fixed dimension. 5749 final boolean updateLayout = viewSize.x == mLastWidthSent 5750 && viewSize.y == mLastHeightSent; 5751 recordNewContentSize(draw.mWidthHeight.x, 5752 draw.mWidthHeight.y 5753 + (mFindIsUp ? mFindHeight : 0), updateLayout); 5754 if (DebugFlags.WEB_VIEW) { 5755 Rect b = draw.mInvalRegion.getBounds(); 5756 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 5757 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 5758 } 5759 invalidateContentRect(draw.mInvalRegion.getBounds()); 5760 if (mPictureListener != null) { 5761 mPictureListener.onNewPicture(WebView.this, capturePicture()); 5762 } 5763 if (useWideViewport) { 5764 // limit mZoomOverviewWidth upper bound to 5765 // sMaxViewportWidth so that if the page doesn't behave 5766 // well, the WebView won't go insane. limit the lower 5767 // bound to match the default scale for mobile sites. 5768 mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math 5769 .max((int) (viewWidth / mDefaultScale), Math 5770 .max(draw.mMinPrefWidth, 5771 draw.mViewPoint.x))); 5772 } 5773 if (!mMinZoomScaleFixed) { 5774 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 5775 } 5776 if (!mDrawHistory && mInZoomOverview) { 5777 // fit the content width to the current view. Ignore 5778 // the rounding error case. 5779 if (Math.abs((viewWidth * mInvActualScale) 5780 - mZoomOverviewWidth) > 1) { 5781 setNewZoomScale((float) viewWidth 5782 / mZoomOverviewWidth, Math.abs(mActualScale 5783 - mTextWrapScale) < 0.01f, false); 5784 } 5785 } 5786 if (draw.mFocusSizeChanged && inEditingMode()) { 5787 mFocusSizeChanged = true; 5788 } 5789 if (hasRestoreState) { 5790 mViewManager.postReadyToDrawAll(); 5791 } 5792 break; 5793 } 5794 case WEBCORE_INITIALIZED_MSG_ID: 5795 // nativeCreate sets mNativeClass to a non-zero value 5796 nativeCreate(msg.arg1); 5797 break; 5798 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 5799 // Make sure that the textfield is currently focused 5800 // and representing the same node as the pointer. 5801 if (inEditingMode() && 5802 mWebTextView.isSameTextField(msg.arg1)) { 5803 if (msg.getData().getBoolean("password")) { 5804 Spannable text = (Spannable) mWebTextView.getText(); 5805 int start = Selection.getSelectionStart(text); 5806 int end = Selection.getSelectionEnd(text); 5807 mWebTextView.setInPassword(true); 5808 // Restore the selection, which may have been 5809 // ruined by setInPassword. 5810 Spannable pword = 5811 (Spannable) mWebTextView.getText(); 5812 Selection.setSelection(pword, start, end); 5813 // If the text entry has created more events, ignore 5814 // this one. 5815 } else if (msg.arg2 == mTextGeneration) { 5816 mWebTextView.setTextAndKeepSelection( 5817 (String) msg.obj); 5818 } 5819 } 5820 break; 5821 case UPDATE_TEXT_SELECTION_MSG_ID: 5822 if (inEditingMode() 5823 && mWebTextView.isSameTextField(msg.arg1) 5824 && msg.arg2 == mTextGeneration) { 5825 WebViewCore.TextSelectionData tData 5826 = (WebViewCore.TextSelectionData) msg.obj; 5827 mWebTextView.setSelectionFromWebKit(tData.mStart, 5828 tData.mEnd); 5829 } 5830 break; 5831 case RETURN_LABEL: 5832 if (inEditingMode() 5833 && mWebTextView.isSameTextField(msg.arg1)) { 5834 mWebTextView.setHint((String) msg.obj); 5835 InputMethodManager imm 5836 = InputMethodManager.peekInstance(); 5837 // The hint is propagated to the IME in 5838 // onCreateInputConnection. If the IME is already 5839 // active, restart it so that its hint text is updated. 5840 if (imm != null && imm.isActive(mWebTextView)) { 5841 imm.restartInput(mWebTextView); 5842 } 5843 } 5844 break; 5845 case MOVE_OUT_OF_PLUGIN: 5846 navHandledKey(msg.arg1, 1, false, 0, true); 5847 break; 5848 case UPDATE_TEXT_ENTRY_MSG_ID: 5849 // this is sent after finishing resize in WebViewCore. Make 5850 // sure the text edit box is still on the screen. 5851 if (inEditingMode() && nativeCursorIsTextInput()) { 5852 mWebTextView.bringIntoView(); 5853 rebuildWebTextView(); 5854 } 5855 break; 5856 case CLEAR_TEXT_ENTRY: 5857 clearTextEntry(); 5858 break; 5859 case INVAL_RECT_MSG_ID: { 5860 Rect r = (Rect)msg.obj; 5861 if (r == null) { 5862 invalidate(); 5863 } else { 5864 // we need to scale r from content into view coords, 5865 // which viewInvalidate() does for us 5866 viewInvalidate(r.left, r.top, r.right, r.bottom); 5867 } 5868 break; 5869 } 5870 case IMMEDIATE_REPAINT_MSG_ID: { 5871 int updates = msg.arg1; 5872 if (updates != 0) { 5873 // updates is a C++ pointer to a Vector of 5874 // AnimationValues that we apply to the layers. 5875 // The Vector is deallocated in nativeUpdateLayers(). 5876 nativeUpdateLayers(updates); 5877 } 5878 invalidate(); 5879 break; 5880 } 5881 case SET_ROOT_LAYER_MSG_ID: { 5882 int oldLayer = mRootLayer; 5883 mRootLayer = msg.arg1; 5884 if (oldLayer > 0) { 5885 nativeDestroyLayer(oldLayer); 5886 } 5887 if (mRootLayer == 0) { 5888 mLayersHaveAnimations = false; 5889 } 5890 if (mEvaluateThread != null) { 5891 mEvaluateThread.cancel(); 5892 mEvaluateThread = null; 5893 } 5894 if (nativeLayersHaveAnimations(mRootLayer)) { 5895 mLayersHaveAnimations = true; 5896 mEvaluateThread = new EvaluateLayersAnimations(); 5897 mEvaluateThread.start(); 5898 } 5899 invalidate(); 5900 break; 5901 } 5902 case REQUEST_FORM_DATA: 5903 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 5904 if (mWebTextView.isSameTextField(msg.arg1)) { 5905 mWebTextView.setAdapterCustom(adapter); 5906 } 5907 break; 5908 case RESUME_WEBCORE_PRIORITY: 5909 WebViewCore.resumePriority(); 5910 break; 5911 5912 case LONG_PRESS_CENTER: 5913 // as this is shared by keydown and trackballdown, reset all 5914 // the states 5915 mGotCenterDown = false; 5916 mTrackballDown = false; 5917 performLongClick(); 5918 break; 5919 5920 case WEBCORE_NEED_TOUCH_EVENTS: 5921 mForwardTouchEvents = (msg.arg1 != 0); 5922 break; 5923 5924 case PREVENT_TOUCH_ID: 5925 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 5926 // dont override if mPreventDrag has been set to no due 5927 // to time out 5928 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5929 mPreventDrag = (msg.arg2 & TOUCH_PREVENT_DRAG) 5930 == TOUCH_PREVENT_DRAG ? PREVENT_DRAG_YES 5931 : PREVENT_DRAG_NO; 5932 if (mPreventDrag == PREVENT_DRAG_YES) { 5933 mTouchMode = TOUCH_DONE_MODE; 5934 } else { 5935 mPreventLongPress = 5936 (msg.arg2 & TOUCH_PREVENT_LONGPRESS) 5937 == TOUCH_PREVENT_LONGPRESS; 5938 mPreventDoubleTap = 5939 (msg.arg2 & TOUCH_PREVENT_DOUBLETAP) 5940 == TOUCH_PREVENT_DOUBLETAP; 5941 } 5942 } 5943 } 5944 break; 5945 5946 case REQUEST_KEYBOARD: 5947 if (msg.arg1 == 0) { 5948 hideSoftKeyboard(); 5949 } else { 5950 displaySoftKeyboard(1 == msg.arg2); 5951 } 5952 break; 5953 5954 case FIND_AGAIN: 5955 // Ignore if find has been dismissed. 5956 if (mFindIsUp) { 5957 findAll(mLastFind); 5958 } 5959 break; 5960 5961 case DRAG_HELD_MOTIONLESS: 5962 mHeldMotionless = MOTIONLESS_TRUE; 5963 invalidate(); 5964 // fall through to keep scrollbars awake 5965 5966 case AWAKEN_SCROLL_BARS: 5967 if (mTouchMode == TOUCH_DRAG_MODE 5968 && mHeldMotionless == MOTIONLESS_TRUE) { 5969 awakenScrollBars(ViewConfiguration 5970 .getScrollDefaultDelay(), false); 5971 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5972 .obtainMessage(AWAKEN_SCROLL_BARS), 5973 ViewConfiguration.getScrollDefaultDelay()); 5974 } 5975 break; 5976 5977 case DO_MOTION_UP: 5978 doMotionUp(msg.arg1, msg.arg2); 5979 break; 5980 5981 case SHOW_FULLSCREEN: { 5982 WebViewCore.PluginFullScreenData data 5983 = (WebViewCore.PluginFullScreenData) msg.obj; 5984 if (data.mNpp != 0 && data.mView != null) { 5985 if (mFullScreenHolder != null) { 5986 Log.w(LOGTAG, 5987 "Should not have another full screen."); 5988 mFullScreenHolder.dismiss(); 5989 } 5990 mFullScreenHolder = new PluginFullScreenHolder( 5991 WebView.this, data.mNpp); 5992 // as we are sharing the View between full screen and 5993 // embedded mode, we have to remove the 5994 // AbsoluteLayout.LayoutParams set by embedded mode to 5995 // ViewGroup.LayoutParams before adding it to the dialog 5996 data.mView.setLayoutParams(new ViewGroup.LayoutParams( 5997 ViewGroup.LayoutParams.FILL_PARENT, 5998 ViewGroup.LayoutParams.FILL_PARENT)); 5999 mFullScreenHolder.setContentView(data.mView); 6000 mFullScreenHolder.setCancelable(false); 6001 mFullScreenHolder.setCanceledOnTouchOutside(false); 6002 mFullScreenHolder.show(); 6003 } else if (mFullScreenHolder == null) { 6004 // this may happen if user dismisses the fullscreen and 6005 // then the WebCore re-position message finally reached 6006 // the UI thread. 6007 break; 6008 } 6009 // move the matching embedded view fully into the view so 6010 // that touch will be valid instead of rejected due to out 6011 // of the visible bounds 6012 // TODO: do we need to preserve the original position and 6013 // scale so that we can revert it when leaving the full 6014 // screen mode? 6015 int x = contentToViewX(data.mDocX); 6016 int y = contentToViewY(data.mDocY); 6017 int width = contentToViewDimension(data.mDocWidth); 6018 int height = contentToViewDimension(data.mDocHeight); 6019 int viewWidth = getViewWidth(); 6020 int viewHeight = getViewHeight(); 6021 int newX = mScrollX; 6022 int newY = mScrollY; 6023 if (x < mScrollX) { 6024 newX = x + (width > viewWidth 6025 ? (width - viewWidth) / 2 : 0); 6026 } else if (x + width > mScrollX + viewWidth) { 6027 newX = x + width - viewWidth - (width > viewWidth 6028 ? (width - viewWidth) / 2 : 0); 6029 } 6030 if (y < mScrollY) { 6031 newY = y + (height > viewHeight 6032 ? (height - viewHeight) / 2 : 0); 6033 } else if (y + height > mScrollY + viewHeight) { 6034 newY = y + height - viewHeight - (height > viewHeight 6035 ? (height - viewHeight) / 2 : 0); 6036 } 6037 scrollTo(newX, newY); 6038 if (width > viewWidth || height > viewHeight) { 6039 mZoomCenterX = viewWidth * .5f; 6040 mZoomCenterY = viewHeight * .5f; 6041 // do not change text wrap scale so that there is no 6042 // reflow 6043 setNewZoomScale(mActualScale 6044 / Math.max((float) width / viewWidth, 6045 (float) height / viewHeight), false, 6046 false); 6047 } 6048 // Now update the bound 6049 mFullScreenHolder.updateBound(contentToViewX(data.mDocX) 6050 - mScrollX, contentToViewY(data.mDocY) - mScrollY, 6051 contentToViewDimension(data.mDocWidth), 6052 contentToViewDimension(data.mDocHeight)); 6053 } 6054 break; 6055 6056 case HIDE_FULLSCREEN: 6057 if (mFullScreenHolder != null) { 6058 mFullScreenHolder.dismiss(); 6059 mFullScreenHolder = null; 6060 } 6061 break; 6062 6063 case DOM_FOCUS_CHANGED: 6064 if (inEditingMode()) { 6065 nativeClearCursor(); 6066 rebuildWebTextView(); 6067 } 6068 break; 6069 6070 case SHOW_RECT_MSG_ID: { 6071 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6072 int x = mScrollX; 6073 int left = contentToViewX(data.mLeft); 6074 int width = contentToViewDimension(data.mWidth); 6075 int maxWidth = contentToViewDimension(data.mContentWidth); 6076 int viewWidth = getViewWidth(); 6077 if (width < viewWidth) { 6078 // center align 6079 x += left + width / 2 - mScrollX - viewWidth / 2; 6080 } else { 6081 x += (int) (left + data.mXPercentInDoc * width 6082 - mScrollX - data.mXPercentInView * viewWidth); 6083 } 6084 if (DebugFlags.WEB_VIEW) { 6085 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6086 width + ",maxWidth=" + maxWidth + 6087 ",viewWidth=" + viewWidth + ",x=" 6088 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6089 ",xPercentInView=" + data.mXPercentInView+ ")"); 6090 } 6091 // use the passing content width to cap x as the current 6092 // mContentWidth may not be updated yet 6093 x = Math.max(0, 6094 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6095 int top = contentToViewY(data.mTop); 6096 int height = contentToViewDimension(data.mHeight); 6097 int maxHeight = contentToViewDimension(data.mContentHeight); 6098 int viewHeight = getViewHeight(); 6099 int y = (int) (top + data.mYPercentInDoc * height - 6100 data.mYPercentInView * viewHeight); 6101 if (DebugFlags.WEB_VIEW) { 6102 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6103 height + ",maxHeight=" + maxHeight + 6104 ",viewHeight=" + viewHeight + ",y=" 6105 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6106 ",yPercentInView=" + data.mYPercentInView+ ")"); 6107 } 6108 // use the passing content height to cap y as the current 6109 // mContentHeight may not be updated yet 6110 y = Math.max(0, 6111 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6112 scrollTo(x, y); 6113 } 6114 break; 6115 6116 default: 6117 super.handleMessage(msg); 6118 break; 6119 } 6120 } 6121 } 6122 6123 // Class used to use a dropdown for a <select> element 6124 private class InvokeListBox implements Runnable { 6125 // Whether the listbox allows multiple selection. 6126 private boolean mMultiple; 6127 // Passed in to a list with multiple selection to tell 6128 // which items are selected. 6129 private int[] mSelectedArray; 6130 // Passed in to a list with single selection to tell 6131 // where the initial selection is. 6132 private int mSelection; 6133 6134 private Container[] mContainers; 6135 6136 // Need these to provide stable ids to my ArrayAdapter, 6137 // which normally does not have stable ids. (Bug 1250098) 6138 private class Container extends Object { 6139 /** 6140 * Possible values for mEnabled. Keep in sync with OptionStatus in 6141 * WebViewCore.cpp 6142 */ 6143 final static int OPTGROUP = -1; 6144 final static int OPTION_DISABLED = 0; 6145 final static int OPTION_ENABLED = 1; 6146 6147 String mString; 6148 int mEnabled; 6149 int mId; 6150 6151 public String toString() { 6152 return mString; 6153 } 6154 } 6155 6156 /** 6157 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6158 * and allow filtering. 6159 */ 6160 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6161 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6162 super(context, 6163 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6164 com.android.internal.R.layout.select_dialog_singlechoice, 6165 objects); 6166 } 6167 6168 @Override 6169 public View getView(int position, View convertView, 6170 ViewGroup parent) { 6171 // Always pass in null so that we will get a new CheckedTextView 6172 // Otherwise, an item which was previously used as an <optgroup> 6173 // element (i.e. has no check), could get used as an <option> 6174 // element, which needs a checkbox/radio, but it would not have 6175 // one. 6176 convertView = super.getView(position, null, parent); 6177 Container c = item(position); 6178 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6179 // ListView does not draw dividers between disabled and 6180 // enabled elements. Use a LinearLayout to provide dividers 6181 LinearLayout layout = new LinearLayout(mContext); 6182 layout.setOrientation(LinearLayout.VERTICAL); 6183 if (position > 0) { 6184 View dividerTop = new View(mContext); 6185 dividerTop.setBackgroundResource( 6186 android.R.drawable.divider_horizontal_bright); 6187 layout.addView(dividerTop); 6188 } 6189 6190 if (Container.OPTGROUP == c.mEnabled) { 6191 // Currently select_dialog_multichoice and 6192 // select_dialog_singlechoice are CheckedTextViews. If 6193 // that changes, the class cast will no longer be valid. 6194 Assert.assertTrue( 6195 convertView instanceof CheckedTextView); 6196 ((CheckedTextView) convertView).setCheckMarkDrawable( 6197 null); 6198 } else { 6199 // c.mEnabled == Container.OPTION_DISABLED 6200 // Draw the disabled element in a disabled state. 6201 convertView.setEnabled(false); 6202 } 6203 6204 layout.addView(convertView); 6205 if (position < getCount() - 1) { 6206 View dividerBottom = new View(mContext); 6207 dividerBottom.setBackgroundResource( 6208 android.R.drawable.divider_horizontal_bright); 6209 layout.addView(dividerBottom); 6210 } 6211 return layout; 6212 } 6213 return convertView; 6214 } 6215 6216 @Override 6217 public boolean hasStableIds() { 6218 // AdapterView's onChanged method uses this to determine whether 6219 // to restore the old state. Return false so that the old (out 6220 // of date) state does not replace the new, valid state. 6221 return false; 6222 } 6223 6224 private Container item(int position) { 6225 if (position < 0 || position >= getCount()) { 6226 return null; 6227 } 6228 return (Container) getItem(position); 6229 } 6230 6231 @Override 6232 public long getItemId(int position) { 6233 Container item = item(position); 6234 if (item == null) { 6235 return -1; 6236 } 6237 return item.mId; 6238 } 6239 6240 @Override 6241 public boolean areAllItemsEnabled() { 6242 return false; 6243 } 6244 6245 @Override 6246 public boolean isEnabled(int position) { 6247 Container item = item(position); 6248 if (item == null) { 6249 return false; 6250 } 6251 return Container.OPTION_ENABLED == item.mEnabled; 6252 } 6253 } 6254 6255 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 6256 mMultiple = true; 6257 mSelectedArray = selected; 6258 6259 int length = array.length; 6260 mContainers = new Container[length]; 6261 for (int i = 0; i < length; i++) { 6262 mContainers[i] = new Container(); 6263 mContainers[i].mString = array[i]; 6264 mContainers[i].mEnabled = enabled[i]; 6265 mContainers[i].mId = i; 6266 } 6267 } 6268 6269 private InvokeListBox(String[] array, int[] enabled, int selection) { 6270 mSelection = selection; 6271 mMultiple = false; 6272 6273 int length = array.length; 6274 mContainers = new Container[length]; 6275 for (int i = 0; i < length; i++) { 6276 mContainers[i] = new Container(); 6277 mContainers[i].mString = array[i]; 6278 mContainers[i].mEnabled = enabled[i]; 6279 mContainers[i].mId = i; 6280 } 6281 } 6282 6283 /* 6284 * Whenever the data set changes due to filtering, this class ensures 6285 * that the checked item remains checked. 6286 */ 6287 private class SingleDataSetObserver extends DataSetObserver { 6288 private long mCheckedId; 6289 private ListView mListView; 6290 private Adapter mAdapter; 6291 6292 /* 6293 * Create a new observer. 6294 * @param id The ID of the item to keep checked. 6295 * @param l ListView for getting and clearing the checked states 6296 * @param a Adapter for getting the IDs 6297 */ 6298 public SingleDataSetObserver(long id, ListView l, Adapter a) { 6299 mCheckedId = id; 6300 mListView = l; 6301 mAdapter = a; 6302 } 6303 6304 public void onChanged() { 6305 // The filter may have changed which item is checked. Find the 6306 // item that the ListView thinks is checked. 6307 int position = mListView.getCheckedItemPosition(); 6308 long id = mAdapter.getItemId(position); 6309 if (mCheckedId != id) { 6310 // Clear the ListView's idea of the checked item, since 6311 // it is incorrect 6312 mListView.clearChoices(); 6313 // Search for mCheckedId. If it is in the filtered list, 6314 // mark it as checked 6315 int count = mAdapter.getCount(); 6316 for (int i = 0; i < count; i++) { 6317 if (mAdapter.getItemId(i) == mCheckedId) { 6318 mListView.setItemChecked(i, true); 6319 break; 6320 } 6321 } 6322 } 6323 } 6324 6325 public void onInvalidate() {} 6326 } 6327 6328 public void run() { 6329 final ListView listView = (ListView) LayoutInflater.from(mContext) 6330 .inflate(com.android.internal.R.layout.select_dialog, null); 6331 final MyArrayListAdapter adapter = new 6332 MyArrayListAdapter(mContext, mContainers, mMultiple); 6333 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 6334 .setView(listView).setCancelable(true) 6335 .setInverseBackgroundForced(true); 6336 6337 if (mMultiple) { 6338 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 6339 public void onClick(DialogInterface dialog, int which) { 6340 mWebViewCore.sendMessage( 6341 EventHub.LISTBOX_CHOICES, 6342 adapter.getCount(), 0, 6343 listView.getCheckedItemPositions()); 6344 }}); 6345 b.setNegativeButton(android.R.string.cancel, 6346 new DialogInterface.OnClickListener() { 6347 public void onClick(DialogInterface dialog, int which) { 6348 mWebViewCore.sendMessage( 6349 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6350 }}); 6351 } 6352 final AlertDialog dialog = b.create(); 6353 listView.setAdapter(adapter); 6354 listView.setFocusableInTouchMode(true); 6355 // There is a bug (1250103) where the checks in a ListView with 6356 // multiple items selected are associated with the positions, not 6357 // the ids, so the items do not properly retain their checks when 6358 // filtered. Do not allow filtering on multiple lists until 6359 // that bug is fixed. 6360 6361 listView.setTextFilterEnabled(!mMultiple); 6362 if (mMultiple) { 6363 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 6364 int length = mSelectedArray.length; 6365 for (int i = 0; i < length; i++) { 6366 listView.setItemChecked(mSelectedArray[i], true); 6367 } 6368 } else { 6369 listView.setOnItemClickListener(new OnItemClickListener() { 6370 public void onItemClick(AdapterView parent, View v, 6371 int position, long id) { 6372 mWebViewCore.sendMessage( 6373 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 6374 dialog.dismiss(); 6375 } 6376 }); 6377 if (mSelection != -1) { 6378 listView.setSelection(mSelection); 6379 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 6380 listView.setItemChecked(mSelection, true); 6381 DataSetObserver observer = new SingleDataSetObserver( 6382 adapter.getItemId(mSelection), listView, adapter); 6383 adapter.registerDataSetObserver(observer); 6384 } 6385 } 6386 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 6387 public void onCancel(DialogInterface dialog) { 6388 mWebViewCore.sendMessage( 6389 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6390 } 6391 }); 6392 dialog.show(); 6393 } 6394 } 6395 6396 /* 6397 * Request a dropdown menu for a listbox with multiple selection. 6398 * 6399 * @param array Labels for the listbox. 6400 * @param enabledArray State for each element in the list. See static 6401 * integers in Container class. 6402 * @param selectedArray Which positions are initally selected. 6403 */ 6404 void requestListBox(String[] array, int[] enabledArray, int[] 6405 selectedArray) { 6406 mPrivateHandler.post( 6407 new InvokeListBox(array, enabledArray, selectedArray)); 6408 } 6409 6410 private void updateZoomRange(WebViewCore.RestoreState restoreState, 6411 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 6412 if (restoreState.mMinScale == 0) { 6413 if (restoreState.mMobileSite) { 6414 if (minPrefWidth > Math.max(0, viewWidth)) { 6415 mMinZoomScale = (float) viewWidth / minPrefWidth; 6416 mMinZoomScaleFixed = false; 6417 if (updateZoomOverview) { 6418 WebSettings settings = getSettings(); 6419 mInZoomOverview = settings.getUseWideViewPort() && 6420 settings.getLoadWithOverviewMode(); 6421 } 6422 } else { 6423 mMinZoomScale = restoreState.mDefaultScale; 6424 mMinZoomScaleFixed = true; 6425 } 6426 } else { 6427 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 6428 mMinZoomScaleFixed = false; 6429 } 6430 } else { 6431 mMinZoomScale = restoreState.mMinScale; 6432 mMinZoomScaleFixed = true; 6433 } 6434 if (restoreState.mMaxScale == 0) { 6435 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 6436 } else { 6437 mMaxZoomScale = restoreState.mMaxScale; 6438 } 6439 } 6440 6441 /* 6442 * Request a dropdown menu for a listbox with single selection or a single 6443 * <select> element. 6444 * 6445 * @param array Labels for the listbox. 6446 * @param enabledArray State for each element in the list. See static 6447 * integers in Container class. 6448 * @param selection Which position is initally selected. 6449 */ 6450 void requestListBox(String[] array, int[] enabledArray, int selection) { 6451 mPrivateHandler.post( 6452 new InvokeListBox(array, enabledArray, selection)); 6453 } 6454 6455 // called by JNI 6456 private void sendMoveFocus(int frame, int node) { 6457 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 6458 new WebViewCore.CursorData(frame, node, 0, 0)); 6459 } 6460 6461 // called by JNI 6462 private void sendMoveMouse(int frame, int node, int x, int y) { 6463 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 6464 new WebViewCore.CursorData(frame, node, x, y)); 6465 } 6466 6467 /* 6468 * Send a mouse move event to the webcore thread. 6469 * 6470 * @param removeFocus Pass true if the "mouse" cursor is now over a node 6471 * which wants key events, but it is not the focus. This 6472 * will make the visual appear as though nothing is in 6473 * focus. Remove the WebTextView, if present, and stop 6474 * drawing the blinking caret. 6475 * called by JNI 6476 */ 6477 private void sendMoveMouseIfLatest(boolean removeFocus) { 6478 if (removeFocus) { 6479 clearTextEntry(); 6480 setFocusControllerInactive(); 6481 } 6482 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 6483 cursorData()); 6484 } 6485 6486 // called by JNI 6487 private void sendMotionUp(int touchGeneration, 6488 int frame, int node, int x, int y) { 6489 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6490 touchUpData.mMoveGeneration = touchGeneration; 6491 touchUpData.mFrame = frame; 6492 touchUpData.mNode = node; 6493 touchUpData.mX = x; 6494 touchUpData.mY = y; 6495 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6496 } 6497 6498 6499 private int getScaledMaxXScroll() { 6500 int width; 6501 if (mHeightCanMeasure == false) { 6502 width = getViewWidth() / 4; 6503 } else { 6504 Rect visRect = new Rect(); 6505 calcOurVisibleRect(visRect); 6506 width = visRect.width() / 2; 6507 } 6508 // FIXME the divisor should be retrieved from somewhere 6509 return viewToContentX(width); 6510 } 6511 6512 private int getScaledMaxYScroll() { 6513 int height; 6514 if (mHeightCanMeasure == false) { 6515 height = getViewHeight() / 4; 6516 } else { 6517 Rect visRect = new Rect(); 6518 calcOurVisibleRect(visRect); 6519 height = visRect.height() / 2; 6520 } 6521 // FIXME the divisor should be retrieved from somewhere 6522 // the closest thing today is hard-coded into ScrollView.java 6523 // (from ScrollView.java, line 363) int maxJump = height/2; 6524 return Math.round(height * mInvActualScale); 6525 } 6526 6527 /** 6528 * Called by JNI to invalidate view 6529 */ 6530 private void viewInvalidate() { 6531 invalidate(); 6532 } 6533 6534 // return true if the key was handled 6535 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 6536 long time, boolean ignorePlugin) { 6537 if (mNativeClass == 0) { 6538 return false; 6539 } 6540 if (ignorePlugin == false && nativeFocusIsPlugin()) { 6541 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 6542 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 6543 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 6544 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 6545 , 0, 0, 0); 6546 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 6547 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 6548 return true; 6549 } 6550 mLastCursorTime = time; 6551 mLastCursorBounds = nativeGetCursorRingBounds(); 6552 boolean keyHandled 6553 = nativeMoveCursor(keyCode, count, noScroll) == false; 6554 if (DebugFlags.WEB_VIEW) { 6555 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 6556 + " mLastCursorTime=" + mLastCursorTime 6557 + " handled=" + keyHandled); 6558 } 6559 if (keyHandled == false || mHeightCanMeasure == false) { 6560 return keyHandled; 6561 } 6562 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 6563 if (contentCursorRingBounds.isEmpty()) return keyHandled; 6564 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 6565 Rect visRect = new Rect(); 6566 calcOurVisibleRect(visRect); 6567 Rect outset = new Rect(visRect); 6568 int maxXScroll = visRect.width() / 2; 6569 int maxYScroll = visRect.height() / 2; 6570 outset.inset(-maxXScroll, -maxYScroll); 6571 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 6572 return keyHandled; 6573 } 6574 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 6575 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 6576 maxXScroll); 6577 if (maxH > 0) { 6578 pinScrollBy(maxH, 0, true, 0); 6579 } else { 6580 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 6581 -maxXScroll); 6582 if (maxH < 0) { 6583 pinScrollBy(maxH, 0, true, 0); 6584 } 6585 } 6586 if (mLastCursorBounds.isEmpty()) return keyHandled; 6587 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 6588 return keyHandled; 6589 } 6590 if (DebugFlags.WEB_VIEW) { 6591 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 6592 + contentCursorRingBounds); 6593 } 6594 requestRectangleOnScreen(viewCursorRingBounds); 6595 mUserScroll = true; 6596 return keyHandled; 6597 } 6598 6599 /** 6600 * Set the background color. It's white by default. Pass 6601 * zero to make the view transparent. 6602 * @param color the ARGB color described by Color.java 6603 */ 6604 public void setBackgroundColor(int color) { 6605 mBackgroundColor = color; 6606 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 6607 } 6608 6609 public void debugDump() { 6610 nativeDebugDump(); 6611 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 6612 } 6613 6614 /** 6615 * Draw the HTML page into the specified canvas. This call ignores any 6616 * view-specific zoom, scroll offset, or other changes. It does not draw 6617 * any view-specific chrome, such as progress or URL bars. 6618 * 6619 * @hide only needs to be accessible to Browser and testing 6620 */ 6621 public void drawPage(Canvas canvas) { 6622 mWebViewCore.drawContentPicture(canvas, 0, false, false); 6623 } 6624 6625 /** 6626 * Update our cache with updatedText. 6627 * @param updatedText The new text to put in our cache. 6628 */ 6629 /* package */ void updateCachedTextfield(String updatedText) { 6630 // Also place our generation number so that when we look at the cache 6631 // we recognize that it is up to date. 6632 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 6633 } 6634 6635 private native int nativeCacheHitFramePointer(); 6636 private native Rect nativeCacheHitNodeBounds(); 6637 private native int nativeCacheHitNodePointer(); 6638 /* package */ native void nativeClearCursor(); 6639 private native void nativeCreate(int ptr); 6640 private native int nativeCursorFramePointer(); 6641 private native Rect nativeCursorNodeBounds(); 6642 private native int nativeCursorNodePointer(); 6643 /* package */ native boolean nativeCursorMatchesFocus(); 6644 private native boolean nativeCursorIntersects(Rect visibleRect); 6645 private native boolean nativeCursorIsAnchor(); 6646 private native boolean nativeCursorIsTextInput(); 6647 private native Point nativeCursorPosition(); 6648 private native String nativeCursorText(); 6649 /** 6650 * Returns true if the native cursor node says it wants to handle key events 6651 * (ala plugins). This can only be called if mNativeClass is non-zero! 6652 */ 6653 private native boolean nativeCursorWantsKeyEvents(); 6654 private native void nativeDebugDump(); 6655 private native void nativeDestroy(); 6656 private native void nativeDrawCursorRing(Canvas content); 6657 private native void nativeDestroyLayer(int layer); 6658 private native int nativeEvaluateLayersAnimations(int layer); 6659 private native boolean nativeLayersHaveAnimations(int layer); 6660 private native void nativeUpdateLayers(int updates); 6661 private native void nativeDrawLayers(int layer, 6662 int scrollX, int scrollY, 6663 int width, int height, 6664 float scale, Canvas canvas); 6665 private native void nativeDrawMatches(Canvas canvas); 6666 private native void nativeDrawSelectionPointer(Canvas content, 6667 float scale, int x, int y, boolean extendSelection); 6668 private native void nativeDrawSelectionRegion(Canvas content); 6669 private native void nativeDumpDisplayTree(String urlOrNull); 6670 private native int nativeFindAll(String findLower, String findUpper); 6671 private native void nativeFindNext(boolean forward); 6672 /* package */ native int nativeFocusCandidateFramePointer(); 6673 private native boolean nativeFocusCandidateIsPassword(); 6674 private native boolean nativeFocusCandidateIsRtlText(); 6675 private native boolean nativeFocusCandidateIsTextInput(); 6676 /* package */ native int nativeFocusCandidateMaxLength(); 6677 /* package */ native String nativeFocusCandidateName(); 6678 private native Rect nativeFocusCandidateNodeBounds(); 6679 private native int nativeFocusCandidatePointer(); 6680 private native String nativeFocusCandidateText(); 6681 private native int nativeFocusCandidateTextSize(); 6682 /** 6683 * Returns an integer corresponding to WebView.cpp::type. 6684 * See WebTextView.setType() 6685 */ 6686 private native int nativeFocusCandidateType(); 6687 private native boolean nativeFocusIsPlugin(); 6688 /* package */ native int nativeFocusNodePointer(); 6689 private native Rect nativeGetCursorRingBounds(); 6690 private native String nativeGetSelection(); 6691 private native boolean nativeHasCursorNode(); 6692 private native boolean nativeHasFocusNode(); 6693 private native void nativeHideCursor(); 6694 private native String nativeImageURI(int x, int y); 6695 private native void nativeInstrumentReport(); 6696 /* package */ native void nativeMoveCursorToNextTextInput(); 6697 // return true if the page has been scrolled 6698 private native boolean nativeMotionUp(int x, int y, int slop); 6699 // returns false if it handled the key 6700 private native boolean nativeMoveCursor(int keyCode, int count, 6701 boolean noScroll); 6702 private native int nativeMoveGeneration(); 6703 private native void nativeMoveSelection(int x, int y, 6704 boolean extendSelection); 6705 private native boolean nativePointInNavCache(int x, int y, int slop); 6706 // Like many other of our native methods, you must make sure that 6707 // mNativeClass is not null before calling this method. 6708 private native void nativeRecordButtons(boolean focused, 6709 boolean pressed, boolean invalidate); 6710 private native void nativeSelectBestAt(Rect rect); 6711 private native void nativeSetFindIsUp(); 6712 private native void nativeSetFollowedLink(boolean followed); 6713 private native void nativeSetHeightCanMeasure(boolean measure); 6714 // Returns a value corresponding to CachedFrame::ImeAction 6715 /* package */ native int nativeTextFieldAction(); 6716 private native int nativeTextGeneration(); 6717 // Never call this version except by updateCachedTextfield(String) - 6718 // we always want to pass in our generation number. 6719 private native void nativeUpdateCachedTextfield(String updatedText, 6720 int generation); 6721 // return NO_LEFTEDGE means failure. 6722 private static final int NO_LEFTEDGE = -1; 6723 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 6724} 6725