WebView.java revision 5c84bf0a3bfa5f95f9f840fbd9a9b8239f76b3db
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.app.AlertDialog; 20import android.content.Context; 21import android.content.DialogInterface; 22import android.content.Intent; 23import android.content.DialogInterface.OnCancelListener; 24import android.content.pm.PackageManager; 25import android.database.DataSetObserver; 26import android.graphics.Bitmap; 27import android.graphics.Canvas; 28import android.graphics.Color; 29import android.graphics.Interpolator; 30import android.graphics.Picture; 31import android.graphics.Point; 32import android.graphics.Rect; 33import android.graphics.drawable.Drawable; 34import android.net.http.SslCertificate; 35import android.net.Uri; 36import android.os.Bundle; 37import android.os.Handler; 38import android.os.Message; 39import android.os.ServiceManager; 40import android.os.SystemClock; 41import android.provider.Checkin; 42import android.text.IClipboard; 43import android.text.Selection; 44import android.text.Spannable; 45import android.util.AttributeSet; 46import android.util.EventLog; 47import android.util.Log; 48import android.util.TypedValue; 49import android.view.Gravity; 50import android.view.KeyEvent; 51import android.view.LayoutInflater; 52import android.view.MotionEvent; 53import android.view.ScaleGestureDetector; 54import android.view.SoundEffectConstants; 55import android.view.VelocityTracker; 56import android.view.View; 57import android.view.ViewConfiguration; 58import android.view.ViewGroup; 59import android.view.ViewTreeObserver; 60import android.view.animation.AlphaAnimation; 61import android.view.inputmethod.EditorInfo; 62import android.view.inputmethod.InputConnection; 63import android.view.inputmethod.InputMethodManager; 64import android.webkit.WebTextView.AutoCompleteAdapter; 65import android.webkit.WebViewCore.EventHub; 66import android.widget.AbsoluteLayout; 67import android.widget.Adapter; 68import android.widget.AdapterView; 69import android.widget.ArrayAdapter; 70import android.widget.CheckedTextView; 71import android.widget.FrameLayout; 72import android.widget.LinearLayout; 73import android.widget.ListView; 74import android.widget.Scroller; 75import android.widget.Toast; 76import android.widget.ZoomButtonsController; 77import android.widget.ZoomControls; 78import android.widget.AdapterView.OnItemClickListener; 79 80import java.io.File; 81import java.io.FileInputStream; 82import java.io.FileNotFoundException; 83import java.io.FileOutputStream; 84import java.io.IOException; 85import java.net.URLDecoder; 86import java.util.ArrayList; 87import java.util.List; 88import java.util.HashMap; 89import java.util.Map; 90 91import junit.framework.Assert; 92 93/** 94 * <p>A View that displays web pages. This class is the basis upon which you 95 * can roll your own web browser or simply display some online content within your Activity. 96 * It uses the WebKit rendering engine to display 97 * web pages and includes methods to navigate forward and backward 98 * through a history, zoom in and out, perform text searches and more.</p> 99 * <p>To enable the built-in zoom, set 100 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 101 * (introduced in API version 3). 102 * <p>Note that, in order for your Activity to access the Internet and load web pages 103 * in a WebView, you must add the <var>INTERNET</var> permissions to your 104 * Android Manifest file:</p> 105 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 106 * 107 * <p>This must be a child of the <code><manifest></code> element.</p> 108 * 109 * <h3>Basic usage</h3> 110 * 111 * <p>By default, a WebView provides no browser-like widgets, does not 112 * enable JavaScript and errors will be ignored. If your goal is only 113 * to display some HTML as a part of your UI, this is probably fine; 114 * the user won't need to interact with the web page beyond reading 115 * it, and the web page won't need to interact with the user. If you 116 * actually want a fully blown web browser, then you probably want to 117 * invoke the Browser application with your URL rather than show it 118 * with a WebView. See {@link android.content.Intent} for more information.</p> 119 * 120 * <pre class="prettyprint"> 121 * WebView webview = new WebView(this); 122 * setContentView(webview); 123 * 124 * // Simplest usage: note that an exception will NOT be thrown 125 * // if there is an error loading this page (see below). 126 * webview.loadUrl("http://slashdot.org/"); 127 * 128 * // Of course you can also load from any string: 129 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 130 * webview.loadData(summary, "text/html", "utf-8"); 131 * // ... although note that there are restrictions on what this HTML can do. 132 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 133 * </pre> 134 * 135 * <p>A WebView has several customization points where you can add your 136 * own behavior. These are:</p> 137 * 138 * <ul> 139 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 140 * This class is called when something that might impact a 141 * browser UI happens, for instance, progress updates and 142 * JavaScript alerts are sent here. 143 * </li> 144 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 145 * It will be called when things happen that impact the 146 * rendering of the content, eg, errors or form submissions. You 147 * can also intercept URL loading here.</li> 148 * <li>Via the {@link android.webkit.WebSettings} class, which contains 149 * miscellaneous configuration. </li> 150 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 151 * This lets you bind Java objects into the WebView so they can be 152 * controlled from the web pages JavaScript.</li> 153 * </ul> 154 * 155 * <p>Here's a more complicated example, showing error handling, 156 * settings, and progress notification:</p> 157 * 158 * <pre class="prettyprint"> 159 * // Let's display the progress in the activity title bar, like the 160 * // browser app does. 161 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 162 * 163 * webview.getSettings().setJavaScriptEnabled(true); 164 * 165 * final Activity activity = this; 166 * webview.setWebChromeClient(new WebChromeClient() { 167 * public void onProgressChanged(WebView view, int progress) { 168 * // Activities and WebViews measure progress with different scales. 169 * // The progress meter will automatically disappear when we reach 100% 170 * activity.setProgress(progress * 1000); 171 * } 172 * }); 173 * webview.setWebViewClient(new WebViewClient() { 174 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 175 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 176 * } 177 * }); 178 * 179 * webview.loadUrl("http://slashdot.org/"); 180 * </pre> 181 * 182 * <h3>Cookie and window management</h3> 183 * 184 * <p>For obvious security reasons, your application has its own 185 * cache, cookie store etc - it does not share the Browser 186 * applications data. Cookies are managed on a separate thread, so 187 * operations like index building don't block the UI 188 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 189 * if you want to use cookies in your application. 190 * </p> 191 * 192 * <p>By default, requests by the HTML to open new windows are 193 * ignored. This is true whether they be opened by JavaScript or by 194 * the target attribute on a link. You can customize your 195 * WebChromeClient to provide your own behaviour for opening multiple windows, 196 * and render them in whatever manner you want.</p> 197 * 198 * <p>Standard behavior for an Activity is to be destroyed and 199 * recreated when the devices orientation is changed. This will cause 200 * the WebView to reload the current page. If you don't want that, you 201 * can set your Activity to handle the orientation and keyboardHidden 202 * changes, and then just leave the WebView alone. It'll automatically 203 * re-orient itself as appropriate.</p> 204 */ 205public class WebView extends AbsoluteLayout 206 implements ViewTreeObserver.OnGlobalFocusChangeListener, 207 ViewGroup.OnHierarchyChangeListener { 208 209 // enable debug output for drag trackers 210 private static final boolean DEBUG_DRAG_TRACKER = false; 211 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 212 // the screen all-the-time. Good for profiling our drawing code 213 static private final boolean AUTO_REDRAW_HACK = false; 214 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 215 private boolean mAutoRedraw; 216 private int mRootLayer; // C++ pointer to the root layer 217 private boolean mLayersHaveAnimations; 218 private EvaluateLayersAnimations mEvaluateThread; 219 220 static final String LOGTAG = "webview"; 221 222 private static class ExtendedZoomControls extends FrameLayout { 223 public ExtendedZoomControls(Context context, AttributeSet attrs) { 224 super(context, attrs); 225 LayoutInflater inflater = (LayoutInflater) 226 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 227 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 228 mPlusMinusZoomControls = (ZoomControls) findViewById( 229 com.android.internal.R.id.zoomControls); 230 findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( 231 View.GONE); 232 } 233 234 public void show(boolean showZoom, boolean canZoomOut) { 235 mPlusMinusZoomControls.setVisibility( 236 showZoom ? View.VISIBLE : View.GONE); 237 fade(View.VISIBLE, 0.0f, 1.0f); 238 } 239 240 public void hide() { 241 fade(View.GONE, 1.0f, 0.0f); 242 } 243 244 private void fade(int visibility, float startAlpha, float endAlpha) { 245 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 246 anim.setDuration(500); 247 startAnimation(anim); 248 setVisibility(visibility); 249 } 250 251 public boolean hasFocus() { 252 return mPlusMinusZoomControls.hasFocus(); 253 } 254 255 public void setOnZoomInClickListener(OnClickListener listener) { 256 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 257 } 258 259 public void setOnZoomOutClickListener(OnClickListener listener) { 260 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 261 } 262 263 ZoomControls mPlusMinusZoomControls; 264 } 265 266 /** 267 * Transportation object for returning WebView across thread boundaries. 268 */ 269 public class WebViewTransport { 270 private WebView mWebview; 271 272 /** 273 * Set the WebView to the transportation object. 274 * @param webview The WebView to transport. 275 */ 276 public synchronized void setWebView(WebView webview) { 277 mWebview = webview; 278 } 279 280 /** 281 * Return the WebView object. 282 * @return WebView The transported WebView object. 283 */ 284 public synchronized WebView getWebView() { 285 return mWebview; 286 } 287 } 288 289 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 290 private final CallbackProxy mCallbackProxy; 291 292 private final WebViewDatabase mDatabase; 293 294 // SSL certificate for the main top-level page (if secure) 295 private SslCertificate mCertificate; 296 297 // Native WebView pointer that is 0 until the native object has been 298 // created. 299 private int mNativeClass; 300 // This would be final but it needs to be set to null when the WebView is 301 // destroyed. 302 private WebViewCore mWebViewCore; 303 // Handler for dispatching UI messages. 304 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 305 private WebTextView mWebTextView; 306 // Used to ignore changes to webkit text that arrives to the UI side after 307 // more key events. 308 private int mTextGeneration; 309 310 // Used by WebViewCore to create child views. 311 /* package */ final ViewManager mViewManager; 312 313 // Used to display in full screen mode 314 PluginFullScreenHolder mFullScreenHolder; 315 316 /** 317 * Position of the last touch event. 318 */ 319 private float mLastTouchX; 320 private float mLastTouchY; 321 322 /** 323 * Time of the last touch event. 324 */ 325 private long mLastTouchTime; 326 327 /** 328 * Time of the last time sending touch event to WebViewCore 329 */ 330 private long mLastSentTouchTime; 331 332 /** 333 * The minimum elapsed time before sending another ACTION_MOVE event to 334 * WebViewCore. This really should be tuned for each type of the devices. 335 * For example in Google Map api test case, it takes Dream device at least 336 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 337 * triggering the layout and drawing the picture. While the same process 338 * takes 60+ms on the current high speed device. If we make 339 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 340 * to WebViewCore queue and the real layout and draw events will be pushed 341 * to further, which slows down the refresh rate. Choose 50 to favor the 342 * current high speed devices. For Dream like devices, 100 is a better 343 * choice. Maybe make this in the buildspec later. 344 */ 345 private static final int TOUCH_SENT_INTERVAL = 50; 346 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 347 348 /** 349 * Helper class to get velocity for fling 350 */ 351 VelocityTracker mVelocityTracker; 352 private int mMaximumFling; 353 private float mLastVelocity; 354 private float mLastVelX; 355 private float mLastVelY; 356 357 /** 358 * Touch mode 359 */ 360 private int mTouchMode = TOUCH_DONE_MODE; 361 private static final int TOUCH_INIT_MODE = 1; 362 private static final int TOUCH_DRAG_START_MODE = 2; 363 private static final int TOUCH_DRAG_MODE = 3; 364 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 365 private static final int TOUCH_SHORTPRESS_MODE = 5; 366 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 367 private static final int TOUCH_DONE_MODE = 7; 368 private static final int TOUCH_SELECT_MODE = 8; 369 private static final int TOUCH_PINCH_DRAG = 9; 370 371 // Whether to forward the touch events to WebCore 372 private boolean mForwardTouchEvents = false; 373 374 // Whether to prevent drag during touch. The initial value depends on 375 // mForwardTouchEvents. If WebCore wants touch events, we assume it will 376 // take control of touch events unless it says no for touch down event. 377 private static final int PREVENT_DRAG_NO = 0; 378 private static final int PREVENT_DRAG_MAYBE_YES = 1; 379 private static final int PREVENT_DRAG_YES = 2; 380 private int mPreventDrag = PREVENT_DRAG_NO; 381 382 // by default mPreventLongPress is false. If it is true, long press event 383 // will be handled by WebKit instead of UI. 384 private boolean mPreventLongPress = false; 385 // by default mPreventDoubleTap is false. If it is true, double tap event 386 // will be handled by WebKit instead of UI. 387 private boolean mPreventDoubleTap = false; 388 389 // this needs to be in sync with the logic in WebKit's 390 // EventHandler::handleTouchEvent() 391 private static final int TOUCH_PREVENT_DRAG = 0x1; 392 private static final int TOUCH_PREVENT_LONGPRESS = 0x2; 393 private static final int TOUCH_PREVENT_DOUBLETAP = 0x4; 394 395 // To keep track of whether the current drag was initiated by a WebTextView, 396 // so that we know not to hide the cursor 397 boolean mDragFromTextInput; 398 399 // Whether or not to draw the cursor ring. 400 private boolean mDrawCursorRing = true; 401 402 // true if onPause has been called (and not onResume) 403 private boolean mIsPaused; 404 405 /** 406 * Customizable constant 407 */ 408 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 409 private int mTouchSlopSquare; 410 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 411 private int mDoubleTapSlopSquare; 412 // pre-computed density adjusted navigation slop 413 private int mNavSlop; 414 // This should be ViewConfiguration.getTapTimeout() 415 // But system time out is 100ms, which is too short for the browser. 416 // In the browser, if it switches out of tap too soon, jump tap won't work. 417 private static final int TAP_TIMEOUT = 200; 418 // This should be ViewConfiguration.getLongPressTimeout() 419 // But system time out is 500ms, which is too short for the browser. 420 // With a short timeout, it's difficult to treat trigger a short press. 421 private static final int LONG_PRESS_TIMEOUT = 1000; 422 // needed to avoid flinging after a pause of no movement 423 private static final int MIN_FLING_TIME = 250; 424 // draw unfiltered after drag is held without movement 425 private static final int MOTIONLESS_TIME = 100; 426 // The time that the Zoom Controls are visible before fading away 427 private static final long ZOOM_CONTROLS_TIMEOUT = 428 ViewConfiguration.getZoomControlsTimeout(); 429 // The amount of content to overlap between two screens when going through 430 // pages with the space bar, in pixels. 431 private static final int PAGE_SCROLL_OVERLAP = 24; 432 433 /** 434 * These prevent calling requestLayout if either dimension is fixed. This 435 * depends on the layout parameters and the measure specs. 436 */ 437 boolean mWidthCanMeasure; 438 boolean mHeightCanMeasure; 439 440 // Remember the last dimensions we sent to the native side so we can avoid 441 // sending the same dimensions more than once. 442 int mLastWidthSent; 443 int mLastHeightSent; 444 445 private int mContentWidth; // cache of value from WebViewCore 446 private int mContentHeight; // cache of value from WebViewCore 447 448 // Need to have the separate control for horizontal and vertical scrollbar 449 // style than the View's single scrollbar style 450 private boolean mOverlayHorizontalScrollbar = true; 451 private boolean mOverlayVerticalScrollbar = false; 452 453 // our standard speed. this way small distances will be traversed in less 454 // time than large distances, but we cap the duration, so that very large 455 // distances won't take too long to get there. 456 private static final int STD_SPEED = 480; // pixels per second 457 // time for the longest scroll animation 458 private static final int MAX_DURATION = 750; // milliseconds 459 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 460 private Scroller mScroller; 461 462 private boolean mWrapContent; 463 private static final int MOTIONLESS_FALSE = 0; 464 private static final int MOTIONLESS_PENDING = 1; 465 private static final int MOTIONLESS_TRUE = 2; 466 private int mHeldMotionless; 467 468 // whether support multi-touch 469 private boolean mSupportMultiTouch; 470 // use the framework's ScaleGestureDetector to handle multi-touch 471 private ScaleGestureDetector mScaleDetector; 472 // minimum scale change during multi-touch zoom 473 private static float PREVIEW_SCALE_INCREMENT = 0.01f; 474 475 // the anchor point in the document space where VIEW_SIZE_CHANGED should 476 // apply to 477 private int mAnchorX; 478 private int mAnchorY; 479 480 /** 481 * Private message ids 482 */ 483 private static final int REMEMBER_PASSWORD = 1; 484 private static final int NEVER_REMEMBER_PASSWORD = 2; 485 private static final int SWITCH_TO_SHORTPRESS = 3; 486 private static final int SWITCH_TO_LONGPRESS = 4; 487 private static final int RELEASE_SINGLE_TAP = 5; 488 private static final int REQUEST_FORM_DATA = 6; 489 private static final int RESUME_WEBCORE_PRIORITY = 7; 490 private static final int DRAG_HELD_MOTIONLESS = 8; 491 private static final int AWAKEN_SCROLL_BARS = 9; 492 493 //! arg1=x, arg2=y 494 static final int SCROLL_TO_MSG_ID = 10; 495 static final int SCROLL_BY_MSG_ID = 11; 496 //! arg1=x, arg2=y 497 static final int SPAWN_SCROLL_TO_MSG_ID = 12; 498 //! arg1=x, arg2=y 499 static final int SYNC_SCROLL_TO_MSG_ID = 13; 500 static final int NEW_PICTURE_MSG_ID = 14; 501 static final int UPDATE_TEXT_ENTRY_MSG_ID = 15; 502 static final int WEBCORE_INITIALIZED_MSG_ID = 16; 503 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 17; 504 static final int UPDATE_ZOOM_RANGE = 18; 505 static final int MOVE_OUT_OF_PLUGIN = 19; 506 static final int CLEAR_TEXT_ENTRY = 20; 507 static final int UPDATE_TEXT_SELECTION_MSG_ID = 21; 508 static final int SHOW_RECT_MSG_ID = 22; 509 static final int LONG_PRESS_CENTER = 23; 510 static final int PREVENT_TOUCH_ID = 24; 511 static final int WEBCORE_NEED_TOUCH_EVENTS = 25; 512 // obj=Rect in doc coordinates 513 static final int INVAL_RECT_MSG_ID = 26; 514 static final int REQUEST_KEYBOARD = 27; 515 static final int DO_MOTION_UP = 28; 516 static final int SHOW_FULLSCREEN = 29; 517 static final int HIDE_FULLSCREEN = 30; 518 static final int DOM_FOCUS_CHANGED = 31; 519 static final int IMMEDIATE_REPAINT_MSG_ID = 32; 520 static final int SET_ROOT_LAYER_MSG_ID = 33; 521 static final int RETURN_LABEL = 34; 522 static final int FIND_AGAIN = 35; 523 524 static final String[] HandlerDebugString = { 525 "REMEMBER_PASSWORD", // = 1; 526 "NEVER_REMEMBER_PASSWORD", // = 2; 527 "SWITCH_TO_SHORTPRESS", // = 3; 528 "SWITCH_TO_LONGPRESS", // = 4; 529 "RELEASE_SINGLE_TAP", // = 5; 530 "REQUEST_FORM_DATA", // = 6; 531 "RESUME_WEBCORE_PRIORITY", // = 7; 532 "DRAG_HELD_MOTIONLESS", // = 8; 533 "AWAKEN_SCROLL_BARS", // = 9; 534 "SCROLL_TO_MSG_ID", // = 10; 535 "SCROLL_BY_MSG_ID", // = 11; 536 "SPAWN_SCROLL_TO_MSG_ID", // = 12; 537 "SYNC_SCROLL_TO_MSG_ID", // = 13; 538 "NEW_PICTURE_MSG_ID", // = 14; 539 "UPDATE_TEXT_ENTRY_MSG_ID", // = 15; 540 "WEBCORE_INITIALIZED_MSG_ID", // = 16; 541 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 17; 542 "UPDATE_ZOOM_RANGE", // = 18; 543 "MOVE_OUT_OF_PLUGIN", // = 19; 544 "CLEAR_TEXT_ENTRY", // = 20; 545 "UPDATE_TEXT_SELECTION_MSG_ID", // = 21; 546 "SHOW_RECT_MSG_ID", // = 22; 547 "LONG_PRESS_CENTER", // = 23; 548 "PREVENT_TOUCH_ID", // = 24; 549 "WEBCORE_NEED_TOUCH_EVENTS", // = 25; 550 "INVAL_RECT_MSG_ID", // = 26; 551 "REQUEST_KEYBOARD", // = 27; 552 "DO_MOTION_UP", // = 28; 553 "SHOW_FULLSCREEN", // = 29; 554 "HIDE_FULLSCREEN", // = 30; 555 "DOM_FOCUS_CHANGED", // = 31; 556 "IMMEDIATE_REPAINT_MSG_ID", // = 32; 557 "SET_ROOT_LAYER_MSG_ID", // = 33; 558 "RETURN_LABEL", // = 34; 559 "FIND_AGAIN" // = 35; 560 }; 561 562 // If the site doesn't use the viewport meta tag to specify the viewport, 563 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 564 static final int DEFAULT_VIEWPORT_WIDTH = 800; 565 566 // normally we try to fit the content to the minimum preferred width 567 // calculated by the Webkit. To avoid the bad behavior when some site's 568 // minimum preferred width keeps growing when changing the viewport width or 569 // the minimum preferred width is huge, an upper limit is needed. 570 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 571 572 // default scale limit. Depending on the display density 573 private static float DEFAULT_MAX_ZOOM_SCALE; 574 private static float DEFAULT_MIN_ZOOM_SCALE; 575 // scale limit, which can be set through viewport meta tag in the web page 576 private float mMaxZoomScale; 577 private float mMinZoomScale; 578 private boolean mMinZoomScaleFixed = true; 579 580 // initial scale in percent. 0 means using default. 581 private int mInitialScaleInPercent = 0; 582 583 // while in the zoom overview mode, the page's width is fully fit to the 584 // current window. The page is alive, in another words, you can click to 585 // follow the links. Double tap will toggle between zoom overview mode and 586 // the last zoom scale. 587 boolean mInZoomOverview = false; 588 589 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 590 // engadget always have wider mContentWidth no matter what viewport size is. 591 int mZoomOverviewWidth = DEFAULT_VIEWPORT_WIDTH; 592 float mTextWrapScale; 593 594 // default scale. Depending on the display density. 595 static int DEFAULT_SCALE_PERCENT; 596 private float mDefaultScale; 597 598 // set to true temporarily during ScaleGesture triggered zoom 599 private boolean mPreviewZoomOnly = false; 600 601 // computed scale and inverse, from mZoomWidth. 602 private float mActualScale; 603 private float mInvActualScale; 604 // if this is non-zero, it is used on drawing rather than mActualScale 605 private float mZoomScale; 606 private float mInvInitialZoomScale; 607 private float mInvFinalZoomScale; 608 private int mInitialScrollX; 609 private int mInitialScrollY; 610 private long mZoomStart; 611 private static final int ZOOM_ANIMATION_LENGTH = 500; 612 613 private boolean mUserScroll = false; 614 615 private int mSnapScrollMode = SNAP_NONE; 616 private static final int SNAP_NONE = 0; 617 private static final int SNAP_LOCK = 1; // not a separate state 618 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 619 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 620 private boolean mSnapPositive; 621 622 // Used to match key downs and key ups 623 private boolean mGotKeyDown; 624 625 /* package */ static boolean mLogEvent = true; 626 private static final int EVENT_LOG_ZOOM_LEVEL_CHANGE = 70101; 627 private static final int EVENT_LOG_DOUBLE_TAP_DURATION = 70102; 628 629 // for event log 630 private long mLastTouchUpTime = 0; 631 632 /** 633 * URI scheme for telephone number 634 */ 635 public static final String SCHEME_TEL = "tel:"; 636 /** 637 * URI scheme for email address 638 */ 639 public static final String SCHEME_MAILTO = "mailto:"; 640 /** 641 * URI scheme for map address 642 */ 643 public static final String SCHEME_GEO = "geo:0,0?q="; 644 645 private int mBackgroundColor = Color.WHITE; 646 647 // Used to notify listeners of a new picture. 648 private PictureListener mPictureListener; 649 /** 650 * Interface to listen for new pictures as they change. 651 */ 652 public interface PictureListener { 653 /** 654 * Notify the listener that the picture has changed. 655 * @param view The WebView that owns the picture. 656 * @param picture The new picture. 657 */ 658 public void onNewPicture(WebView view, Picture picture); 659 } 660 661 // FIXME: Want to make this public, but need to change the API file. 662 public /*static*/ class HitTestResult { 663 /** 664 * Default HitTestResult, where the target is unknown 665 */ 666 public static final int UNKNOWN_TYPE = 0; 667 /** 668 * HitTestResult for hitting a HTML::a tag 669 */ 670 public static final int ANCHOR_TYPE = 1; 671 /** 672 * HitTestResult for hitting a phone number 673 */ 674 public static final int PHONE_TYPE = 2; 675 /** 676 * HitTestResult for hitting a map address 677 */ 678 public static final int GEO_TYPE = 3; 679 /** 680 * HitTestResult for hitting an email address 681 */ 682 public static final int EMAIL_TYPE = 4; 683 /** 684 * HitTestResult for hitting an HTML::img tag 685 */ 686 public static final int IMAGE_TYPE = 5; 687 /** 688 * HitTestResult for hitting a HTML::a tag which contains HTML::img 689 */ 690 public static final int IMAGE_ANCHOR_TYPE = 6; 691 /** 692 * HitTestResult for hitting a HTML::a tag with src=http 693 */ 694 public static final int SRC_ANCHOR_TYPE = 7; 695 /** 696 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 697 */ 698 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 699 /** 700 * HitTestResult for hitting an edit text area 701 */ 702 public static final int EDIT_TEXT_TYPE = 9; 703 704 private int mType; 705 private String mExtra; 706 707 HitTestResult() { 708 mType = UNKNOWN_TYPE; 709 } 710 711 private void setType(int type) { 712 mType = type; 713 } 714 715 private void setExtra(String extra) { 716 mExtra = extra; 717 } 718 719 public int getType() { 720 return mType; 721 } 722 723 public String getExtra() { 724 return mExtra; 725 } 726 } 727 728 // The View containing the zoom controls 729 private ExtendedZoomControls mZoomControls; 730 private Runnable mZoomControlRunnable; 731 732 private ZoomButtonsController mZoomButtonsController; 733 734 // These keep track of the center point of the zoom. They are used to 735 // determine the point around which we should zoom. 736 private float mZoomCenterX; 737 private float mZoomCenterY; 738 739 private ZoomButtonsController.OnZoomListener mZoomListener = 740 new ZoomButtonsController.OnZoomListener() { 741 742 public void onVisibilityChanged(boolean visible) { 743 if (visible) { 744 switchOutDrawHistory(); 745 // Bring back the hidden zoom controls. 746 mZoomButtonsController.getZoomControls().setVisibility( 747 View.VISIBLE); 748 updateZoomButtonsEnabled(); 749 } 750 } 751 752 public void onZoom(boolean zoomIn) { 753 if (zoomIn) { 754 zoomIn(); 755 } else { 756 zoomOut(); 757 } 758 759 updateZoomButtonsEnabled(); 760 } 761 }; 762 763 /** 764 * Construct a new WebView with a Context object. 765 * @param context A Context object used to access application assets. 766 */ 767 public WebView(Context context) { 768 this(context, null); 769 } 770 771 /** 772 * Construct a new WebView with layout parameters. 773 * @param context A Context object used to access application assets. 774 * @param attrs An AttributeSet passed to our parent. 775 */ 776 public WebView(Context context, AttributeSet attrs) { 777 this(context, attrs, com.android.internal.R.attr.webViewStyle); 778 } 779 780 /** 781 * Construct a new WebView with layout parameters and a default style. 782 * @param context A Context object used to access application assets. 783 * @param attrs An AttributeSet passed to our parent. 784 * @param defStyle The default style resource ID. 785 */ 786 public WebView(Context context, AttributeSet attrs, int defStyle) { 787 this(context, attrs, defStyle, null); 788 } 789 790 /** 791 * Construct a new WebView with layout parameters, a default style and a set 792 * of custom Javscript interfaces to be added to the WebView at initialization 793 * time. This guarantees that these interfaces will be available when the JS 794 * context is initialized. 795 * @param context A Context object used to access application assets. 796 * @param attrs An AttributeSet passed to our parent. 797 * @param defStyle The default style resource ID. 798 * @param javascriptInterfaces is a Map of intareface names, as keys, and 799 * object implementing those interfaces, as values. 800 * @hide pending API council approval. 801 */ 802 protected WebView(Context context, AttributeSet attrs, int defStyle, 803 Map<String, Object> javascriptInterfaces) { 804 super(context, attrs, defStyle); 805 init(); 806 807 mCallbackProxy = new CallbackProxy(context, this); 808 mViewManager = new ViewManager(this); 809 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 810 mDatabase = WebViewDatabase.getInstance(context); 811 mScroller = new Scroller(context); 812 813 mZoomButtonsController = new ZoomButtonsController(this); 814 mZoomButtonsController.setOnZoomListener(mZoomListener); 815 // ZoomButtonsController positions the buttons at the bottom, but in 816 // the middle. Change their layout parameters so they appear on the 817 // right. 818 View controls = mZoomButtonsController.getZoomControls(); 819 ViewGroup.LayoutParams params = controls.getLayoutParams(); 820 if (params instanceof FrameLayout.LayoutParams) { 821 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 822 params; 823 frameParams.gravity = Gravity.RIGHT; 824 } 825 updateMultiTouchSupport(context); 826 } 827 828 void updateMultiTouchSupport(Context context) { 829 WebSettings settings = getSettings(); 830 mSupportMultiTouch = context.getPackageManager().hasSystemFeature( 831 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 832 && settings.supportZoom() && settings.getBuiltInZoomControls(); 833 if (mSupportMultiTouch && (mScaleDetector == null)) { 834 mScaleDetector = new ScaleGestureDetector(context, 835 new ScaleDetectorListener()); 836 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 837 mScaleDetector = null; 838 } 839 } 840 841 private void updateZoomButtonsEnabled() { 842 boolean canZoomIn = mActualScale < mMaxZoomScale; 843 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 844 if (!canZoomIn && !canZoomOut) { 845 // Hide the zoom in and out buttons, as well as the fit to page 846 // button, if the page cannot zoom 847 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 848 } else { 849 // Set each one individually, as a page may be able to zoom in 850 // or out. 851 mZoomButtonsController.setZoomInEnabled(canZoomIn); 852 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 853 } 854 } 855 856 private void init() { 857 setWillNotDraw(false); 858 setFocusable(true); 859 setFocusableInTouchMode(true); 860 setClickable(true); 861 setLongClickable(true); 862 863 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 864 int slop = configuration.getScaledTouchSlop(); 865 mTouchSlopSquare = slop * slop; 866 mMinLockSnapReverseDistance = slop; 867 slop = configuration.getScaledDoubleTapSlop(); 868 mDoubleTapSlopSquare = slop * slop; 869 final float density = getContext().getResources().getDisplayMetrics().density; 870 // use one line height, 16 based on our current default font, for how 871 // far we allow a touch be away from the edge of a link 872 mNavSlop = (int) (16 * density); 873 // density adjusted scale factors 874 DEFAULT_SCALE_PERCENT = (int) (100 * density); 875 mDefaultScale = density; 876 mActualScale = density; 877 mInvActualScale = 1 / density; 878 mTextWrapScale = density; 879 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 880 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 881 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 882 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 883 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 884 } 885 886 /* package */void updateDefaultZoomDensity(int zoomDensity) { 887 final float density = getContext().getResources().getDisplayMetrics().density 888 * 100 / zoomDensity; 889 if (Math.abs(density - mDefaultScale) > 0.01) { 890 float scaleFactor = density / mDefaultScale; 891 // adjust the limits 892 mNavSlop = (int) (16 * density); 893 DEFAULT_SCALE_PERCENT = (int) (100 * density); 894 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 895 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 896 mDefaultScale = density; 897 mMaxZoomScale *= scaleFactor; 898 mMinZoomScale *= scaleFactor; 899 setNewZoomScale(mActualScale * scaleFactor, true, false); 900 } 901 } 902 903 /* package */ boolean onSavePassword(String schemePlusHost, String username, 904 String password, final Message resumeMsg) { 905 boolean rVal = false; 906 if (resumeMsg == null) { 907 // null resumeMsg implies saving password silently 908 mDatabase.setUsernamePassword(schemePlusHost, username, password); 909 } else { 910 final Message remember = mPrivateHandler.obtainMessage( 911 REMEMBER_PASSWORD); 912 remember.getData().putString("host", schemePlusHost); 913 remember.getData().putString("username", username); 914 remember.getData().putString("password", password); 915 remember.obj = resumeMsg; 916 917 final Message neverRemember = mPrivateHandler.obtainMessage( 918 NEVER_REMEMBER_PASSWORD); 919 neverRemember.getData().putString("host", schemePlusHost); 920 neverRemember.getData().putString("username", username); 921 neverRemember.getData().putString("password", password); 922 neverRemember.obj = resumeMsg; 923 924 new AlertDialog.Builder(getContext()) 925 .setTitle(com.android.internal.R.string.save_password_label) 926 .setMessage(com.android.internal.R.string.save_password_message) 927 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 928 new DialogInterface.OnClickListener() { 929 public void onClick(DialogInterface dialog, int which) { 930 resumeMsg.sendToTarget(); 931 } 932 }) 933 .setNeutralButton(com.android.internal.R.string.save_password_remember, 934 new DialogInterface.OnClickListener() { 935 public void onClick(DialogInterface dialog, int which) { 936 remember.sendToTarget(); 937 } 938 }) 939 .setNegativeButton(com.android.internal.R.string.save_password_never, 940 new DialogInterface.OnClickListener() { 941 public void onClick(DialogInterface dialog, int which) { 942 neverRemember.sendToTarget(); 943 } 944 }) 945 .setOnCancelListener(new OnCancelListener() { 946 public void onCancel(DialogInterface dialog) { 947 resumeMsg.sendToTarget(); 948 } 949 }).show(); 950 // Return true so that WebViewCore will pause while the dialog is 951 // up. 952 rVal = true; 953 } 954 return rVal; 955 } 956 957 @Override 958 public void setScrollBarStyle(int style) { 959 if (style == View.SCROLLBARS_INSIDE_INSET 960 || style == View.SCROLLBARS_OUTSIDE_INSET) { 961 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 962 } else { 963 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 964 } 965 super.setScrollBarStyle(style); 966 } 967 968 /** 969 * Specify whether the horizontal scrollbar has overlay style. 970 * @param overlay TRUE if horizontal scrollbar should have overlay style. 971 */ 972 public void setHorizontalScrollbarOverlay(boolean overlay) { 973 mOverlayHorizontalScrollbar = overlay; 974 } 975 976 /** 977 * Specify whether the vertical scrollbar has overlay style. 978 * @param overlay TRUE if vertical scrollbar should have overlay style. 979 */ 980 public void setVerticalScrollbarOverlay(boolean overlay) { 981 mOverlayVerticalScrollbar = overlay; 982 } 983 984 /** 985 * Return whether horizontal scrollbar has overlay style 986 * @return TRUE if horizontal scrollbar has overlay style. 987 */ 988 public boolean overlayHorizontalScrollbar() { 989 return mOverlayHorizontalScrollbar; 990 } 991 992 /** 993 * Return whether vertical scrollbar has overlay style 994 * @return TRUE if vertical scrollbar has overlay style. 995 */ 996 public boolean overlayVerticalScrollbar() { 997 return mOverlayVerticalScrollbar; 998 } 999 1000 /* 1001 * Return the width of the view where the content of WebView should render 1002 * to. 1003 * Note: this can be called from WebCoreThread. 1004 */ 1005 /* package */ int getViewWidth() { 1006 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1007 return getWidth(); 1008 } else { 1009 return getWidth() - getVerticalScrollbarWidth(); 1010 } 1011 } 1012 1013 /* 1014 * returns the height of the titlebarview (if any). Does not care about 1015 * scrolling 1016 */ 1017 private int getTitleHeight() { 1018 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1019 } 1020 1021 /* 1022 * Return the amount of the titlebarview (if any) that is visible 1023 */ 1024 private int getVisibleTitleHeight() { 1025 return Math.max(getTitleHeight() - mScrollY, 0); 1026 } 1027 1028 /* 1029 * Return the height of the view where the content of WebView should render 1030 * to. Note that this excludes mTitleBar, if there is one. 1031 * Note: this can be called from WebCoreThread. 1032 */ 1033 /* package */ int getViewHeight() { 1034 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1035 } 1036 1037 private int getViewHeightWithTitle() { 1038 int height = getHeight(); 1039 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1040 height -= getHorizontalScrollbarHeight(); 1041 } 1042 return height; 1043 } 1044 1045 /** 1046 * @return The SSL certificate for the main top-level page or null if 1047 * there is no certificate (the site is not secure). 1048 */ 1049 public SslCertificate getCertificate() { 1050 return mCertificate; 1051 } 1052 1053 /** 1054 * Sets the SSL certificate for the main top-level page. 1055 */ 1056 public void setCertificate(SslCertificate certificate) { 1057 // here, the certificate can be null (if the site is not secure) 1058 mCertificate = certificate; 1059 } 1060 1061 //------------------------------------------------------------------------- 1062 // Methods called by activity 1063 //------------------------------------------------------------------------- 1064 1065 /** 1066 * Save the username and password for a particular host in the WebView's 1067 * internal database. 1068 * @param host The host that required the credentials. 1069 * @param username The username for the given host. 1070 * @param password The password for the given host. 1071 */ 1072 public void savePassword(String host, String username, String password) { 1073 mDatabase.setUsernamePassword(host, username, password); 1074 } 1075 1076 /** 1077 * Set the HTTP authentication credentials for a given host and realm. 1078 * 1079 * @param host The host for the credentials. 1080 * @param realm The realm for the credentials. 1081 * @param username The username for the password. If it is null, it means 1082 * password can't be saved. 1083 * @param password The password 1084 */ 1085 public void setHttpAuthUsernamePassword(String host, String realm, 1086 String username, String password) { 1087 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1088 } 1089 1090 /** 1091 * Retrieve the HTTP authentication username and password for a given 1092 * host & realm pair 1093 * 1094 * @param host The host for which the credentials apply. 1095 * @param realm The realm for which the credentials apply. 1096 * @return String[] if found, String[0] is username, which can be null and 1097 * String[1] is password. Return null if it can't find anything. 1098 */ 1099 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1100 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1101 } 1102 1103 /** 1104 * Destroy the internal state of the WebView. This method should be called 1105 * after the WebView has been removed from the view system. No other 1106 * methods may be called on a WebView after destroy. 1107 */ 1108 public void destroy() { 1109 clearTextEntry(); 1110 if (mWebViewCore != null) { 1111 // Set the handlers to null before destroying WebViewCore so no 1112 // more messages will be posted. 1113 mCallbackProxy.setWebViewClient(null); 1114 mCallbackProxy.setWebChromeClient(null); 1115 // Tell WebViewCore to destroy itself 1116 WebViewCore webViewCore = mWebViewCore; 1117 mWebViewCore = null; // prevent using partial webViewCore 1118 webViewCore.destroy(); 1119 // Remove any pending messages that might not be serviced yet. 1120 mPrivateHandler.removeCallbacksAndMessages(null); 1121 mCallbackProxy.removeCallbacksAndMessages(null); 1122 // Wake up the WebCore thread just in case it is waiting for a 1123 // javascript dialog. 1124 synchronized (mCallbackProxy) { 1125 mCallbackProxy.notify(); 1126 } 1127 } 1128 if (mNativeClass != 0) { 1129 nativeDestroy(); 1130 mNativeClass = 0; 1131 } 1132 } 1133 1134 /** 1135 * Enables platform notifications of data state and proxy changes. 1136 */ 1137 public static void enablePlatformNotifications() { 1138 Network.enablePlatformNotifications(); 1139 } 1140 1141 /** 1142 * If platform notifications are enabled, this should be called 1143 * from the Activity's onPause() or onStop(). 1144 */ 1145 public static void disablePlatformNotifications() { 1146 Network.disablePlatformNotifications(); 1147 } 1148 1149 /** 1150 * Sets JavaScript engine flags. 1151 * 1152 * @param flags JS engine flags in a String 1153 * 1154 * @hide pending API solidification 1155 */ 1156 public void setJsFlags(String flags) { 1157 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1158 } 1159 1160 /** 1161 * Inform WebView of the network state. This is used to set 1162 * the javascript property window.navigator.isOnline and 1163 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1164 * @param networkUp boolean indicating if network is available 1165 */ 1166 public void setNetworkAvailable(boolean networkUp) { 1167 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1168 networkUp ? 1 : 0, 0); 1169 } 1170 1171 /** 1172 * Inform WebView about the current network type. 1173 * {@hide} 1174 */ 1175 public void setNetworkType(String type, String subtype) { 1176 Map<String, String> map = new HashMap<String, String>(); 1177 map.put("type", type); 1178 map.put("subtype", subtype); 1179 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1180 } 1181 /** 1182 * Save the state of this WebView used in 1183 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1184 * method no longer stores the display data for this WebView. The previous 1185 * behavior could potentially leak files if {@link #restoreState} was never 1186 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1187 * and restoring the display data. 1188 * @param outState The Bundle to store the WebView state. 1189 * @return The same copy of the back/forward list used to save the state. If 1190 * saveState fails, the returned list will be null. 1191 * @see #savePicture 1192 * @see #restorePicture 1193 */ 1194 public WebBackForwardList saveState(Bundle outState) { 1195 if (outState == null) { 1196 return null; 1197 } 1198 // We grab a copy of the back/forward list because a client of WebView 1199 // may have invalidated the history list by calling clearHistory. 1200 WebBackForwardList list = copyBackForwardList(); 1201 final int currentIndex = list.getCurrentIndex(); 1202 final int size = list.getSize(); 1203 // We should fail saving the state if the list is empty or the index is 1204 // not in a valid range. 1205 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1206 return null; 1207 } 1208 outState.putInt("index", currentIndex); 1209 // FIXME: This should just be a byte[][] instead of ArrayList but 1210 // Parcel.java does not have the code to handle multi-dimensional 1211 // arrays. 1212 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1213 for (int i = 0; i < size; i++) { 1214 WebHistoryItem item = list.getItemAtIndex(i); 1215 if (null == item) { 1216 // FIXME: this shouldn't happen 1217 // need to determine how item got set to null 1218 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1219 return null; 1220 } 1221 byte[] data = item.getFlattenedData(); 1222 if (data == null) { 1223 // It would be very odd to not have any data for a given history 1224 // item. And we will fail to rebuild the history list without 1225 // flattened data. 1226 return null; 1227 } 1228 history.add(data); 1229 } 1230 outState.putSerializable("history", history); 1231 if (mCertificate != null) { 1232 outState.putBundle("certificate", 1233 SslCertificate.saveState(mCertificate)); 1234 } 1235 return list; 1236 } 1237 1238 /** 1239 * Save the current display data to the Bundle given. Used in conjunction 1240 * with {@link #saveState}. 1241 * @param b A Bundle to store the display data. 1242 * @param dest The file to store the serialized picture data. Will be 1243 * overwritten with this WebView's picture data. 1244 * @return True if the picture was successfully saved. 1245 */ 1246 public boolean savePicture(Bundle b, File dest) { 1247 if (dest == null || b == null) { 1248 return false; 1249 } 1250 final Picture p = capturePicture(); 1251 try { 1252 final FileOutputStream out = new FileOutputStream(dest); 1253 p.writeToStream(out); 1254 out.close(); 1255 } catch (FileNotFoundException e){ 1256 e.printStackTrace(); 1257 } catch (IOException e) { 1258 e.printStackTrace(); 1259 } catch (RuntimeException e) { 1260 e.printStackTrace(); 1261 } 1262 if (dest.length() > 0) { 1263 b.putInt("scrollX", mScrollX); 1264 b.putInt("scrollY", mScrollY); 1265 b.putFloat("scale", mActualScale); 1266 b.putFloat("textwrapScale", mTextWrapScale); 1267 b.putBoolean("overview", mInZoomOverview); 1268 return true; 1269 } 1270 return false; 1271 } 1272 1273 /** 1274 * Restore the display data that was save in {@link #savePicture}. Used in 1275 * conjunction with {@link #restoreState}. 1276 * @param b A Bundle containing the saved display data. 1277 * @param src The file where the picture data was stored. 1278 * @return True if the picture was successfully restored. 1279 */ 1280 public boolean restorePicture(Bundle b, File src) { 1281 if (src == null || b == null) { 1282 return false; 1283 } 1284 if (src.exists()) { 1285 Picture p = null; 1286 try { 1287 final FileInputStream in = new FileInputStream(src); 1288 p = Picture.createFromStream(in); 1289 in.close(); 1290 } catch (FileNotFoundException e){ 1291 e.printStackTrace(); 1292 } catch (RuntimeException e) { 1293 e.printStackTrace(); 1294 } catch (IOException e) { 1295 e.printStackTrace(); 1296 } 1297 if (p != null) { 1298 int sx = b.getInt("scrollX", 0); 1299 int sy = b.getInt("scrollY", 0); 1300 float scale = b.getFloat("scale", 1.0f); 1301 mDrawHistory = true; 1302 mHistoryPicture = p; 1303 mScrollX = sx; 1304 mScrollY = sy; 1305 mHistoryWidth = Math.round(p.getWidth() * scale); 1306 mHistoryHeight = Math.round(p.getHeight() * scale); 1307 // as getWidth() / getHeight() of the view are not 1308 // available yet, set up mActualScale, so that when 1309 // onSizeChanged() is called, the rest will be set 1310 // correctly 1311 mActualScale = scale; 1312 mTextWrapScale = b.getFloat("textwrapScale", scale); 1313 mInZoomOverview = b.getBoolean("overview"); 1314 invalidate(); 1315 return true; 1316 } 1317 } 1318 return false; 1319 } 1320 1321 /** 1322 * Restore the state of this WebView from the given map used in 1323 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1324 * be called to restore the state of the WebView before using the object. If 1325 * it is called after the WebView has had a chance to build state (load 1326 * pages, create a back/forward list, etc.) there may be undesirable 1327 * side-effects. Please note that this method no longer restores the 1328 * display data for this WebView. See {@link #savePicture} and {@link 1329 * #restorePicture} for saving and restoring the display data. 1330 * @param inState The incoming Bundle of state. 1331 * @return The restored back/forward list or null if restoreState failed. 1332 * @see #savePicture 1333 * @see #restorePicture 1334 */ 1335 public WebBackForwardList restoreState(Bundle inState) { 1336 WebBackForwardList returnList = null; 1337 if (inState == null) { 1338 return returnList; 1339 } 1340 if (inState.containsKey("index") && inState.containsKey("history")) { 1341 mCertificate = SslCertificate.restoreState( 1342 inState.getBundle("certificate")); 1343 1344 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1345 final int index = inState.getInt("index"); 1346 // We can't use a clone of the list because we need to modify the 1347 // shared copy, so synchronize instead to prevent concurrent 1348 // modifications. 1349 synchronized (list) { 1350 final List<byte[]> history = 1351 (List<byte[]>) inState.getSerializable("history"); 1352 final int size = history.size(); 1353 // Check the index bounds so we don't crash in native code while 1354 // restoring the history index. 1355 if (index < 0 || index >= size) { 1356 return null; 1357 } 1358 for (int i = 0; i < size; i++) { 1359 byte[] data = history.remove(0); 1360 if (data == null) { 1361 // If we somehow have null data, we cannot reconstruct 1362 // the item and thus our history list cannot be rebuilt. 1363 return null; 1364 } 1365 WebHistoryItem item = new WebHistoryItem(data); 1366 list.addHistoryItem(item); 1367 } 1368 // Grab the most recent copy to return to the caller. 1369 returnList = copyBackForwardList(); 1370 // Update the copy to have the correct index. 1371 returnList.setCurrentIndex(index); 1372 } 1373 // Remove all pending messages because we are restoring previous 1374 // state. 1375 mWebViewCore.removeMessages(); 1376 // Send a restore state message. 1377 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1378 } 1379 return returnList; 1380 } 1381 1382 /** 1383 * Load the given url with the extra headers. 1384 * @param url The url of the resource to load. 1385 * @param extraHeaders The extra headers sent with this url. This should not 1386 * include the common headers like "user-agent". If it does, it 1387 * will be replaced by the intrinsic value of the WebView. 1388 */ 1389 public void loadUrl(String url, Map<String, String> extraHeaders) { 1390 switchOutDrawHistory(); 1391 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1392 arg.mUrl = url; 1393 arg.mExtraHeaders = extraHeaders; 1394 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1395 clearTextEntry(); 1396 } 1397 1398 /** 1399 * Load the given url. 1400 * @param url The url of the resource to load. 1401 */ 1402 public void loadUrl(String url) { 1403 if (url == null) { 1404 return; 1405 } 1406 loadUrl(url, null); 1407 } 1408 1409 /** 1410 * Load the url with postData using "POST" method into the WebView. If url 1411 * is not a network url, it will be loaded with {link 1412 * {@link #loadUrl(String)} instead. 1413 * 1414 * @param url The url of the resource to load. 1415 * @param postData The data will be passed to "POST" request. 1416 */ 1417 public void postUrl(String url, byte[] postData) { 1418 if (URLUtil.isNetworkUrl(url)) { 1419 switchOutDrawHistory(); 1420 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1421 arg.mUrl = url; 1422 arg.mPostData = postData; 1423 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1424 clearTextEntry(); 1425 } else { 1426 loadUrl(url); 1427 } 1428 } 1429 1430 /** 1431 * Load the given data into the WebView. This will load the data into 1432 * WebView using the data: scheme. Content loaded through this mechanism 1433 * does not have the ability to load content from the network. 1434 * @param data A String of data in the given encoding. 1435 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1436 * @param encoding The encoding of the data. i.e. utf-8, base64 1437 */ 1438 public void loadData(String data, String mimeType, String encoding) { 1439 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1440 } 1441 1442 /** 1443 * Load the given data into the WebView, use the provided URL as the base 1444 * URL for the content. The base URL is the URL that represents the page 1445 * that is loaded through this interface. As such, it is used for the 1446 * history entry and to resolve any relative URLs. The failUrl is used if 1447 * browser fails to load the data provided. If it is empty or null, and the 1448 * load fails, then no history entry is created. 1449 * <p> 1450 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1451 * files through "file:///android_asset/" for the sub resources is more 1452 * restricted. If you provide null or empty string as baseUrl, you won't be 1453 * able to access asset files. If the baseUrl is anything other than 1454 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1455 * sub resources. 1456 * 1457 * @param baseUrl Url to resolve relative paths with, if null defaults to 1458 * "about:blank" 1459 * @param data A String of data in the given encoding. 1460 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1461 * defaults to "text/html" 1462 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1463 * @param failUrl URL to use if the content fails to load or null. 1464 */ 1465 public void loadDataWithBaseURL(String baseUrl, String data, 1466 String mimeType, String encoding, String failUrl) { 1467 1468 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1469 loadData(data, mimeType, encoding); 1470 return; 1471 } 1472 switchOutDrawHistory(); 1473 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1474 arg.mBaseUrl = baseUrl; 1475 arg.mData = data; 1476 arg.mMimeType = mimeType; 1477 arg.mEncoding = encoding; 1478 arg.mFailUrl = failUrl; 1479 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1480 clearTextEntry(); 1481 } 1482 1483 /** 1484 * Stop the current load. 1485 */ 1486 public void stopLoading() { 1487 // TODO: should we clear all the messages in the queue before sending 1488 // STOP_LOADING? 1489 switchOutDrawHistory(); 1490 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1491 } 1492 1493 /** 1494 * Reload the current url. 1495 */ 1496 public void reload() { 1497 clearTextEntry(); 1498 switchOutDrawHistory(); 1499 mWebViewCore.sendMessage(EventHub.RELOAD); 1500 } 1501 1502 /** 1503 * Return true if this WebView has a back history item. 1504 * @return True iff this WebView has a back history item. 1505 */ 1506 public boolean canGoBack() { 1507 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1508 synchronized (l) { 1509 if (l.getClearPending()) { 1510 return false; 1511 } else { 1512 return l.getCurrentIndex() > 0; 1513 } 1514 } 1515 } 1516 1517 /** 1518 * Go back in the history of this WebView. 1519 */ 1520 public void goBack() { 1521 goBackOrForward(-1); 1522 } 1523 1524 /** 1525 * Return true if this WebView has a forward history item. 1526 * @return True iff this Webview has a forward history item. 1527 */ 1528 public boolean canGoForward() { 1529 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1530 synchronized (l) { 1531 if (l.getClearPending()) { 1532 return false; 1533 } else { 1534 return l.getCurrentIndex() < l.getSize() - 1; 1535 } 1536 } 1537 } 1538 1539 /** 1540 * Go forward in the history of this WebView. 1541 */ 1542 public void goForward() { 1543 goBackOrForward(1); 1544 } 1545 1546 /** 1547 * Return true if the page can go back or forward the given 1548 * number of steps. 1549 * @param steps The negative or positive number of steps to move the 1550 * history. 1551 */ 1552 public boolean canGoBackOrForward(int steps) { 1553 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1554 synchronized (l) { 1555 if (l.getClearPending()) { 1556 return false; 1557 } else { 1558 int newIndex = l.getCurrentIndex() + steps; 1559 return newIndex >= 0 && newIndex < l.getSize(); 1560 } 1561 } 1562 } 1563 1564 /** 1565 * Go to the history item that is the number of steps away from 1566 * the current item. Steps is negative if backward and positive 1567 * if forward. 1568 * @param steps The number of steps to take back or forward in the back 1569 * forward list. 1570 */ 1571 public void goBackOrForward(int steps) { 1572 goBackOrForward(steps, false); 1573 } 1574 1575 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1576 // every time we go back or forward, we want to reset the 1577 // WebView certificate: 1578 // if the new site is secure, we will reload it and get a 1579 // new certificate set; 1580 // if the new site is not secure, the certificate must be 1581 // null, and that will be the case 1582 mCertificate = null; 1583 if (steps != 0) { 1584 clearTextEntry(); 1585 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1586 ignoreSnapshot ? 1 : 0); 1587 } 1588 } 1589 1590 private boolean extendScroll(int y) { 1591 int finalY = mScroller.getFinalY(); 1592 int newY = pinLocY(finalY + y); 1593 if (newY == finalY) return false; 1594 mScroller.setFinalY(newY); 1595 mScroller.extendDuration(computeDuration(0, y)); 1596 return true; 1597 } 1598 1599 /** 1600 * Scroll the contents of the view up by half the view size 1601 * @param top true to jump to the top of the page 1602 * @return true if the page was scrolled 1603 */ 1604 public boolean pageUp(boolean top) { 1605 if (mNativeClass == 0) { 1606 return false; 1607 } 1608 nativeClearCursor(); // start next trackball movement from page edge 1609 if (top) { 1610 // go to the top of the document 1611 return pinScrollTo(mScrollX, 0, true, 0); 1612 } 1613 // Page up 1614 int h = getHeight(); 1615 int y; 1616 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1617 y = -h + PAGE_SCROLL_OVERLAP; 1618 } else { 1619 y = -h / 2; 1620 } 1621 mUserScroll = true; 1622 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1623 : extendScroll(y); 1624 } 1625 1626 /** 1627 * Scroll the contents of the view down by half the page size 1628 * @param bottom true to jump to bottom of page 1629 * @return true if the page was scrolled 1630 */ 1631 public boolean pageDown(boolean bottom) { 1632 if (mNativeClass == 0) { 1633 return false; 1634 } 1635 nativeClearCursor(); // start next trackball movement from page edge 1636 if (bottom) { 1637 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1638 } 1639 // Page down. 1640 int h = getHeight(); 1641 int y; 1642 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1643 y = h - PAGE_SCROLL_OVERLAP; 1644 } else { 1645 y = h / 2; 1646 } 1647 mUserScroll = true; 1648 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1649 : extendScroll(y); 1650 } 1651 1652 /** 1653 * Clear the view so that onDraw() will draw nothing but white background, 1654 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1655 */ 1656 public void clearView() { 1657 mContentWidth = 0; 1658 mContentHeight = 0; 1659 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1660 } 1661 1662 /** 1663 * Return a new picture that captures the current display of the webview. 1664 * This is a copy of the display, and will be unaffected if the webview 1665 * later loads a different URL. 1666 * 1667 * @return a picture containing the current contents of the view. Note this 1668 * picture is of the entire document, and is not restricted to the 1669 * bounds of the view. 1670 */ 1671 public Picture capturePicture() { 1672 if (null == mWebViewCore) return null; // check for out of memory tab 1673 return mWebViewCore.copyContentPicture(); 1674 } 1675 1676 /** 1677 * Return true if the browser is displaying a TextView for text input. 1678 */ 1679 private boolean inEditingMode() { 1680 return mWebTextView != null && mWebTextView.getParent() != null 1681 && mWebTextView.hasFocus(); 1682 } 1683 1684 private void clearTextEntry() { 1685 if (inEditingMode()) { 1686 mWebTextView.remove(); 1687 } 1688 } 1689 1690 /** 1691 * Return the current scale of the WebView 1692 * @return The current scale. 1693 */ 1694 public float getScale() { 1695 return mActualScale; 1696 } 1697 1698 /** 1699 * Set the initial scale for the WebView. 0 means default. If 1700 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1701 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1702 * WebView starts will this value as initial scale. 1703 * 1704 * @param scaleInPercent The initial scale in percent. 1705 */ 1706 public void setInitialScale(int scaleInPercent) { 1707 mInitialScaleInPercent = scaleInPercent; 1708 } 1709 1710 /** 1711 * Invoke the graphical zoom picker widget for this WebView. This will 1712 * result in the zoom widget appearing on the screen to control the zoom 1713 * level of this WebView. 1714 */ 1715 public void invokeZoomPicker() { 1716 if (!getSettings().supportZoom()) { 1717 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1718 return; 1719 } 1720 clearTextEntry(); 1721 if (getSettings().getBuiltInZoomControls()) { 1722 mZoomButtonsController.setVisible(true); 1723 } else { 1724 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1725 mPrivateHandler.postDelayed(mZoomControlRunnable, 1726 ZOOM_CONTROLS_TIMEOUT); 1727 } 1728 } 1729 1730 /** 1731 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1732 * is found and the anchor has a non-javascript url, the HitTestResult type 1733 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1734 * anchor does not have a url or if it is a javascript url, the type will 1735 * be UNKNOWN_TYPE and the url has to be retrieved through 1736 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1737 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1738 * the "extra" field. A type of 1739 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1740 * a child node. If a phone number is found, the HitTestResult type is set 1741 * to PHONE_TYPE and the phone number is set in the "extra" field of 1742 * HitTestResult. If a map address is found, the HitTestResult type is set 1743 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1744 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1745 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1746 * HitTestResult type is set to UNKNOWN_TYPE. 1747 */ 1748 public HitTestResult getHitTestResult() { 1749 if (mNativeClass == 0) { 1750 return null; 1751 } 1752 1753 HitTestResult result = new HitTestResult(); 1754 if (nativeHasCursorNode()) { 1755 if (nativeCursorIsTextInput()) { 1756 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1757 } else { 1758 String text = nativeCursorText(); 1759 if (text != null) { 1760 if (text.startsWith(SCHEME_TEL)) { 1761 result.setType(HitTestResult.PHONE_TYPE); 1762 result.setExtra(text.substring(SCHEME_TEL.length())); 1763 } else if (text.startsWith(SCHEME_MAILTO)) { 1764 result.setType(HitTestResult.EMAIL_TYPE); 1765 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1766 } else if (text.startsWith(SCHEME_GEO)) { 1767 result.setType(HitTestResult.GEO_TYPE); 1768 result.setExtra(URLDecoder.decode(text 1769 .substring(SCHEME_GEO.length()))); 1770 } else if (nativeCursorIsAnchor()) { 1771 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1772 result.setExtra(text); 1773 } 1774 } 1775 } 1776 } 1777 int type = result.getType(); 1778 if (type == HitTestResult.UNKNOWN_TYPE 1779 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1780 // Now check to see if it is an image. 1781 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1782 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1783 String text = nativeImageURI(contentX, contentY); 1784 if (text != null) { 1785 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1786 HitTestResult.IMAGE_TYPE : 1787 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1788 result.setExtra(text); 1789 } 1790 } 1791 return result; 1792 } 1793 1794 // Called by JNI when the DOM has changed the focus. Clear the focus so 1795 // that new keys will go to the newly focused field 1796 private void domChangedFocus() { 1797 if (inEditingMode()) { 1798 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 1799 } 1800 } 1801 /** 1802 * Request the href of an anchor element due to getFocusNodePath returning 1803 * "href." If hrefMsg is null, this method returns immediately and does not 1804 * dispatch hrefMsg to its target. 1805 * 1806 * @param hrefMsg This message will be dispatched with the result of the 1807 * request as the data member with "url" as key. The result can 1808 * be null. 1809 */ 1810 // FIXME: API change required to change the name of this function. We now 1811 // look at the cursor node, and not the focus node. Also, what is 1812 // getFocusNodePath? 1813 public void requestFocusNodeHref(Message hrefMsg) { 1814 if (hrefMsg == null || mNativeClass == 0) { 1815 return; 1816 } 1817 if (nativeCursorIsAnchor()) { 1818 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1819 nativeCursorFramePointer(), nativeCursorNodePointer(), 1820 hrefMsg); 1821 } 1822 } 1823 1824 /** 1825 * Request the url of the image last touched by the user. msg will be sent 1826 * to its target with a String representing the url as its object. 1827 * 1828 * @param msg This message will be dispatched with the result of the request 1829 * as the data member with "url" as key. The result can be null. 1830 */ 1831 public void requestImageRef(Message msg) { 1832 if (0 == mNativeClass) return; // client isn't initialized 1833 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1834 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1835 String ref = nativeImageURI(contentX, contentY); 1836 Bundle data = msg.getData(); 1837 data.putString("url", ref); 1838 msg.setData(data); 1839 msg.sendToTarget(); 1840 } 1841 1842 private static int pinLoc(int x, int viewMax, int docMax) { 1843// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1844 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1845 // pin the short document to the top/left of the screen 1846 x = 0; 1847// Log.d(LOGTAG, "--- center " + x); 1848 } else if (x < 0) { 1849 x = 0; 1850// Log.d(LOGTAG, "--- zero"); 1851 } else if (x + viewMax > docMax) { 1852 x = docMax - viewMax; 1853// Log.d(LOGTAG, "--- pin " + x); 1854 } 1855 return x; 1856 } 1857 1858 // Expects x in view coordinates 1859 private int pinLocX(int x) { 1860 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1861 } 1862 1863 // Expects y in view coordinates 1864 private int pinLocY(int y) { 1865 int titleH = getTitleHeight(); 1866 // if the titlebar is still visible, just pin against 0 1867 if (y <= titleH) { 1868 return Math.max(y, 0); 1869 } 1870 // convert to 0-based coordinate (subtract the title height) 1871 // pin(), and then add the title height back in 1872 return pinLoc(y - titleH, getViewHeight(), 1873 computeVerticalScrollRange()) + titleH; 1874 } 1875 1876 /** 1877 * A title bar which is embedded in this WebView, and scrolls along with it 1878 * vertically, but not horizontally. 1879 */ 1880 private View mTitleBar; 1881 1882 /** 1883 * Since we draw the title bar ourselves, we removed the shadow from the 1884 * browser's activity. We do want a shadow at the bottom of the title bar, 1885 * or at the top of the screen if the title bar is not visible. This 1886 * drawable serves that purpose. 1887 */ 1888 private Drawable mTitleShadow; 1889 1890 /** 1891 * Add or remove a title bar to be embedded into the WebView, and scroll 1892 * along with it vertically, while remaining in view horizontally. Pass 1893 * null to remove the title bar from the WebView, and return to drawing 1894 * the WebView normally without translating to account for the title bar. 1895 * @hide 1896 */ 1897 public void setEmbeddedTitleBar(View v) { 1898 if (mTitleBar == v) return; 1899 if (mTitleBar != null) { 1900 removeView(mTitleBar); 1901 } 1902 if (null != v) { 1903 addView(v, new AbsoluteLayout.LayoutParams( 1904 ViewGroup.LayoutParams.MATCH_PARENT, 1905 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1906 if (mTitleShadow == null) { 1907 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1908 com.android.internal.R.drawable.title_bar_shadow); 1909 } 1910 } 1911 mTitleBar = v; 1912 } 1913 1914 /** 1915 * Given a distance in view space, convert it to content space. Note: this 1916 * does not reflect translation, just scaling, so this should not be called 1917 * with coordinates, but should be called for dimensions like width or 1918 * height. 1919 */ 1920 private int viewToContentDimension(int d) { 1921 return Math.round(d * mInvActualScale); 1922 } 1923 1924 /** 1925 * Given an x coordinate in view space, convert it to content space. Also 1926 * may be used for absolute heights (such as for the WebTextView's 1927 * textSize, which is unaffected by the height of the title bar). 1928 */ 1929 /*package*/ int viewToContentX(int x) { 1930 return viewToContentDimension(x); 1931 } 1932 1933 /** 1934 * Given a y coordinate in view space, convert it to content space. 1935 * Takes into account the height of the title bar if there is one 1936 * embedded into the WebView. 1937 */ 1938 /*package*/ int viewToContentY(int y) { 1939 return viewToContentDimension(y - getTitleHeight()); 1940 } 1941 1942 /** 1943 * Given a distance in content space, convert it to view space. Note: this 1944 * does not reflect translation, just scaling, so this should not be called 1945 * with coordinates, but should be called for dimensions like width or 1946 * height. 1947 */ 1948 /*package*/ int contentToViewDimension(int d) { 1949 return Math.round(d * mActualScale); 1950 } 1951 1952 /** 1953 * Given an x coordinate in content space, convert it to view 1954 * space. 1955 */ 1956 /*package*/ int contentToViewX(int x) { 1957 return contentToViewDimension(x); 1958 } 1959 1960 /** 1961 * Given a y coordinate in content space, convert it to view 1962 * space. Takes into account the height of the title bar. 1963 */ 1964 /*package*/ int contentToViewY(int y) { 1965 return contentToViewDimension(y) + getTitleHeight(); 1966 } 1967 1968 private Rect contentToViewRect(Rect x) { 1969 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 1970 contentToViewX(x.right), contentToViewY(x.bottom)); 1971 } 1972 1973 /* To invalidate a rectangle in content coordinates, we need to transform 1974 the rect into view coordinates, so we can then call invalidate(...). 1975 1976 Normally, we would just call contentToView[XY](...), which eventually 1977 calls Math.round(coordinate * mActualScale). However, for invalidates, 1978 we need to account for the slop that occurs with antialiasing. To 1979 address that, we are a little more liberal in the size of the rect that 1980 we invalidate. 1981 1982 This liberal calculation calls floor() for the top/left, and ceil() for 1983 the bottom/right coordinates. This catches the possible extra pixels of 1984 antialiasing that we might have missed with just round(). 1985 */ 1986 1987 // Called by JNI to invalidate the View, given rectangle coordinates in 1988 // content space 1989 private void viewInvalidate(int l, int t, int r, int b) { 1990 final float scale = mActualScale; 1991 final int dy = getTitleHeight(); 1992 invalidate((int)Math.floor(l * scale), 1993 (int)Math.floor(t * scale) + dy, 1994 (int)Math.ceil(r * scale), 1995 (int)Math.ceil(b * scale) + dy); 1996 } 1997 1998 // Called by JNI to invalidate the View after a delay, given rectangle 1999 // coordinates in content space 2000 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2001 final float scale = mActualScale; 2002 final int dy = getTitleHeight(); 2003 postInvalidateDelayed(delay, 2004 (int)Math.floor(l * scale), 2005 (int)Math.floor(t * scale) + dy, 2006 (int)Math.ceil(r * scale), 2007 (int)Math.ceil(b * scale) + dy); 2008 } 2009 2010 private void invalidateContentRect(Rect r) { 2011 viewInvalidate(r.left, r.top, r.right, r.bottom); 2012 } 2013 2014 // stop the scroll animation, and don't let a subsequent fling add 2015 // to the existing velocity 2016 private void abortAnimation() { 2017 mScroller.abortAnimation(); 2018 mLastVelocity = 0; 2019 } 2020 2021 /* call from webcoreview.draw(), so we're still executing in the UI thread 2022 */ 2023 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2024 2025 // premature data from webkit, ignore 2026 if ((w | h) == 0) { 2027 return; 2028 } 2029 2030 // don't abort a scroll animation if we didn't change anything 2031 if (mContentWidth != w || mContentHeight != h) { 2032 // record new dimensions 2033 mContentWidth = w; 2034 mContentHeight = h; 2035 // If history Picture is drawn, don't update scroll. They will be 2036 // updated when we get out of that mode. 2037 if (!mDrawHistory) { 2038 // repin our scroll, taking into account the new content size 2039 int oldX = mScrollX; 2040 int oldY = mScrollY; 2041 mScrollX = pinLocX(mScrollX); 2042 mScrollY = pinLocY(mScrollY); 2043 if (oldX != mScrollX || oldY != mScrollY) { 2044 sendOurVisibleRect(); 2045 } 2046 if (!mScroller.isFinished()) { 2047 // We are in the middle of a scroll. Repin the final scroll 2048 // position. 2049 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2050 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2051 } 2052 } 2053 } 2054 contentSizeChanged(updateLayout); 2055 } 2056 2057 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 2058 boolean force) { 2059 if (scale < mMinZoomScale) { 2060 scale = mMinZoomScale; 2061 } else if (scale > mMaxZoomScale) { 2062 scale = mMaxZoomScale; 2063 } 2064 if (updateTextWrapScale) { 2065 mTextWrapScale = scale; 2066 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 2067 mLastHeightSent = 0; 2068 } 2069 if (scale != mActualScale || force) { 2070 if (mDrawHistory) { 2071 // If history Picture is drawn, don't update scroll. They will 2072 // be updated when we get out of that mode. 2073 if (scale != mActualScale && !mPreviewZoomOnly) { 2074 mCallbackProxy.onScaleChanged(mActualScale, scale); 2075 } 2076 mActualScale = scale; 2077 mInvActualScale = 1 / scale; 2078 sendViewSizeZoom(); 2079 } else { 2080 // update our scroll so we don't appear to jump 2081 // i.e. keep the center of the doc in the center of the view 2082 2083 int oldX = mScrollX; 2084 int oldY = mScrollY; 2085 float ratio = scale * mInvActualScale; // old inverse 2086 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2087 float sy = ratio * oldY + (ratio - 1) 2088 * (mZoomCenterY - getTitleHeight()); 2089 2090 // now update our new scale and inverse 2091 if (scale != mActualScale && !mPreviewZoomOnly) { 2092 mCallbackProxy.onScaleChanged(mActualScale, scale); 2093 } 2094 mActualScale = scale; 2095 mInvActualScale = 1 / scale; 2096 2097 // Scale all the child views 2098 mViewManager.scaleAll(); 2099 2100 // as we don't have animation for scaling, don't do animation 2101 // for scrolling, as it causes weird intermediate state 2102 // pinScrollTo(Math.round(sx), Math.round(sy)); 2103 mScrollX = pinLocX(Math.round(sx)); 2104 mScrollY = pinLocY(Math.round(sy)); 2105 2106 // update webkit 2107 sendViewSizeZoom(); 2108 sendOurVisibleRect(); 2109 } 2110 } 2111 } 2112 2113 // Used to avoid sending many visible rect messages. 2114 private Rect mLastVisibleRectSent; 2115 private Rect mLastGlobalRect; 2116 2117 private Rect sendOurVisibleRect() { 2118 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2119 2120 Rect rect = new Rect(); 2121 calcOurContentVisibleRect(rect); 2122 // Rect.equals() checks for null input. 2123 if (!rect.equals(mLastVisibleRectSent)) { 2124 Point pos = new Point(rect.left, rect.top); 2125 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2126 nativeMoveGeneration(), 0, pos); 2127 mLastVisibleRectSent = rect; 2128 } 2129 Rect globalRect = new Rect(); 2130 if (getGlobalVisibleRect(globalRect) 2131 && !globalRect.equals(mLastGlobalRect)) { 2132 if (DebugFlags.WEB_VIEW) { 2133 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2134 + globalRect.top + ",r=" + globalRect.right + ",b=" 2135 + globalRect.bottom); 2136 } 2137 // TODO: the global offset is only used by windowRect() 2138 // in ChromeClientAndroid ; other clients such as touch 2139 // and mouse events could return view + screen relative points. 2140 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2141 mLastGlobalRect = globalRect; 2142 } 2143 return rect; 2144 } 2145 2146 // Sets r to be the visible rectangle of our webview in view coordinates 2147 private void calcOurVisibleRect(Rect r) { 2148 Point p = new Point(); 2149 getGlobalVisibleRect(r, p); 2150 r.offset(-p.x, -p.y); 2151 if (mFindIsUp) { 2152 r.bottom -= mFindHeight; 2153 } 2154 } 2155 2156 // Sets r to be our visible rectangle in content coordinates 2157 private void calcOurContentVisibleRect(Rect r) { 2158 calcOurVisibleRect(r); 2159 r.left = viewToContentX(r.left); 2160 // viewToContentY will remove the total height of the title bar. Add 2161 // the visible height back in to account for the fact that if the title 2162 // bar is partially visible, the part of the visible rect which is 2163 // displaying our content is displaced by that amount. 2164 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2165 r.right = viewToContentX(r.right); 2166 r.bottom = viewToContentY(r.bottom); 2167 } 2168 2169 static class ViewSizeData { 2170 int mWidth; 2171 int mHeight; 2172 int mTextWrapWidth; 2173 int mAnchorX; 2174 int mAnchorY; 2175 float mScale; 2176 boolean mIgnoreHeight; 2177 } 2178 2179 /** 2180 * Compute unzoomed width and height, and if they differ from the last 2181 * values we sent, send them to webkit (to be used has new viewport) 2182 * 2183 * @return true if new values were sent 2184 */ 2185 private boolean sendViewSizeZoom() { 2186 if (mPreviewZoomOnly) return false; 2187 2188 int viewWidth = getViewWidth(); 2189 int newWidth = Math.round(viewWidth * mInvActualScale); 2190 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2191 /* 2192 * Because the native side may have already done a layout before the 2193 * View system was able to measure us, we have to send a height of 0 to 2194 * remove excess whitespace when we grow our width. This will trigger a 2195 * layout and a change in content size. This content size change will 2196 * mean that contentSizeChanged will either call this method directly or 2197 * indirectly from onSizeChanged. 2198 */ 2199 if (newWidth > mLastWidthSent && mWrapContent) { 2200 newHeight = 0; 2201 } 2202 // Avoid sending another message if the dimensions have not changed. 2203 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2204 ViewSizeData data = new ViewSizeData(); 2205 data.mWidth = newWidth; 2206 data.mHeight = newHeight; 2207 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2208 data.mScale = mActualScale; 2209 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2210 data.mAnchorX = mAnchorX; 2211 data.mAnchorY = mAnchorY; 2212 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2213 mLastWidthSent = newWidth; 2214 mLastHeightSent = newHeight; 2215 mAnchorX = mAnchorY = 0; 2216 return true; 2217 } 2218 return false; 2219 } 2220 2221 @Override 2222 protected int computeHorizontalScrollRange() { 2223 if (mDrawHistory) { 2224 return mHistoryWidth; 2225 } else { 2226 // to avoid rounding error caused unnecessary scrollbar, use floor 2227 return (int) Math.floor(mContentWidth * mActualScale); 2228 } 2229 } 2230 2231 @Override 2232 protected int computeVerticalScrollRange() { 2233 if (mDrawHistory) { 2234 return mHistoryHeight; 2235 } else { 2236 // to avoid rounding error caused unnecessary scrollbar, use floor 2237 return (int) Math.floor(mContentHeight * mActualScale); 2238 } 2239 } 2240 2241 @Override 2242 protected int computeVerticalScrollOffset() { 2243 return Math.max(mScrollY - getTitleHeight(), 0); 2244 } 2245 2246 @Override 2247 protected int computeVerticalScrollExtent() { 2248 return getViewHeight(); 2249 } 2250 2251 /** @hide */ 2252 @Override 2253 protected void onDrawVerticalScrollBar(Canvas canvas, 2254 Drawable scrollBar, 2255 int l, int t, int r, int b) { 2256 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2257 scrollBar.draw(canvas); 2258 } 2259 2260 /** 2261 * Get the url for the current page. This is not always the same as the url 2262 * passed to WebViewClient.onPageStarted because although the load for 2263 * that url has begun, the current page may not have changed. 2264 * @return The url for the current page. 2265 */ 2266 public String getUrl() { 2267 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2268 return h != null ? h.getUrl() : null; 2269 } 2270 2271 /** 2272 * Get the original url for the current page. This is not always the same 2273 * as the url passed to WebViewClient.onPageStarted because although the 2274 * load for that url has begun, the current page may not have changed. 2275 * Also, there may have been redirects resulting in a different url to that 2276 * originally requested. 2277 * @return The url that was originally requested for the current page. 2278 */ 2279 public String getOriginalUrl() { 2280 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2281 return h != null ? h.getOriginalUrl() : null; 2282 } 2283 2284 /** 2285 * Get the title for the current page. This is the title of the current page 2286 * until WebViewClient.onReceivedTitle is called. 2287 * @return The title for the current page. 2288 */ 2289 public String getTitle() { 2290 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2291 return h != null ? h.getTitle() : null; 2292 } 2293 2294 /** 2295 * Get the favicon for the current page. This is the favicon of the current 2296 * page until WebViewClient.onReceivedIcon is called. 2297 * @return The favicon for the current page. 2298 */ 2299 public Bitmap getFavicon() { 2300 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2301 return h != null ? h.getFavicon() : null; 2302 } 2303 2304 /** 2305 * Get the touch icon url for the apple-touch-icon <link> element. 2306 * @hide 2307 */ 2308 public String getTouchIconUrl() { 2309 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2310 return h != null ? h.getTouchIconUrl() : null; 2311 } 2312 2313 /** 2314 * Get the progress for the current page. 2315 * @return The progress for the current page between 0 and 100. 2316 */ 2317 public int getProgress() { 2318 return mCallbackProxy.getProgress(); 2319 } 2320 2321 /** 2322 * @return the height of the HTML content. 2323 */ 2324 public int getContentHeight() { 2325 return mContentHeight; 2326 } 2327 2328 /** 2329 * @return the width of the HTML content. 2330 * @hide 2331 */ 2332 public int getContentWidth() { 2333 return mContentWidth; 2334 } 2335 2336 /** 2337 * Pause all layout, parsing, and javascript timers for all webviews. This 2338 * is a global requests, not restricted to just this webview. This can be 2339 * useful if the application has been paused. 2340 */ 2341 public void pauseTimers() { 2342 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2343 } 2344 2345 /** 2346 * Resume all layout, parsing, and javascript timers for all webviews. 2347 * This will resume dispatching all timers. 2348 */ 2349 public void resumeTimers() { 2350 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2351 } 2352 2353 /** 2354 * Call this to pause any extra processing associated with this view and 2355 * its associated DOM/plugins/javascript/etc. For example, if the view is 2356 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2357 * network traffic. When the view is again "active", call onResume(). 2358 * 2359 * Note that this differs from pauseTimers(), which affects all views/DOMs 2360 * @hide 2361 */ 2362 public void onPause() { 2363 if (!mIsPaused) { 2364 mIsPaused = true; 2365 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2366 } 2367 } 2368 2369 /** 2370 * Call this to balanace a previous call to onPause() 2371 * @hide 2372 */ 2373 public void onResume() { 2374 if (mIsPaused) { 2375 mIsPaused = false; 2376 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2377 } 2378 } 2379 2380 /** 2381 * Returns true if the view is paused, meaning onPause() was called. Calling 2382 * onResume() sets the paused state back to false. 2383 * @hide 2384 */ 2385 public boolean isPaused() { 2386 return mIsPaused; 2387 } 2388 2389 /** 2390 * Call this to inform the view that memory is low so that it can 2391 * free any available memory. 2392 */ 2393 public void freeMemory() { 2394 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2395 } 2396 2397 /** 2398 * Clear the resource cache. Note that the cache is per-application, so 2399 * this will clear the cache for all WebViews used. 2400 * 2401 * @param includeDiskFiles If false, only the RAM cache is cleared. 2402 */ 2403 public void clearCache(boolean includeDiskFiles) { 2404 // Note: this really needs to be a static method as it clears cache for all 2405 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2406 // we can't make this static. 2407 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2408 includeDiskFiles ? 1 : 0, 0); 2409 } 2410 2411 /** 2412 * Make sure that clearing the form data removes the adapter from the 2413 * currently focused textfield if there is one. 2414 */ 2415 public void clearFormData() { 2416 if (inEditingMode()) { 2417 AutoCompleteAdapter adapter = null; 2418 mWebTextView.setAdapterCustom(adapter); 2419 } 2420 } 2421 2422 /** 2423 * Tell the WebView to clear its internal back/forward list. 2424 */ 2425 public void clearHistory() { 2426 mCallbackProxy.getBackForwardList().setClearPending(); 2427 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2428 } 2429 2430 /** 2431 * Clear the SSL preferences table stored in response to proceeding with SSL 2432 * certificate errors. 2433 */ 2434 public void clearSslPreferences() { 2435 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2436 } 2437 2438 /** 2439 * Return the WebBackForwardList for this WebView. This contains the 2440 * back/forward list for use in querying each item in the history stack. 2441 * This is a copy of the private WebBackForwardList so it contains only a 2442 * snapshot of the current state. Multiple calls to this method may return 2443 * different objects. The object returned from this method will not be 2444 * updated to reflect any new state. 2445 */ 2446 public WebBackForwardList copyBackForwardList() { 2447 return mCallbackProxy.getBackForwardList().clone(); 2448 } 2449 2450 /* 2451 * Highlight and scroll to the next occurance of String in findAll. 2452 * Wraps the page infinitely, and scrolls. Must be called after 2453 * calling findAll. 2454 * 2455 * @param forward Direction to search. 2456 */ 2457 public void findNext(boolean forward) { 2458 if (0 == mNativeClass) return; // client isn't initialized 2459 nativeFindNext(forward); 2460 } 2461 2462 /* 2463 * Find all instances of find on the page and highlight them. 2464 * @param find String to find. 2465 * @return int The number of occurances of the String "find" 2466 * that were found. 2467 */ 2468 public int findAll(String find) { 2469 if (0 == mNativeClass) return 0; // client isn't initialized 2470 if (mFindIsUp == false) { 2471 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2472 false); 2473 mFindIsUp = true; 2474 } 2475 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2476 invalidate(); 2477 mLastFind = find; 2478 return result; 2479 } 2480 2481 // Used to know whether the find dialog is open. Affects whether 2482 // or not we draw the highlights for matches. 2483 private boolean mFindIsUp; 2484 private int mFindHeight; 2485 // Keep track of the last string sent, so we can search again after an 2486 // orientation change or the dismissal of the soft keyboard. 2487 private String mLastFind; 2488 2489 /** 2490 * Return the first substring consisting of the address of a physical 2491 * location. Currently, only addresses in the United States are detected, 2492 * and consist of: 2493 * - a house number 2494 * - a street name 2495 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2496 * - a city name 2497 * - a state or territory, either spelled out or two-letter abbr. 2498 * - an optional 5 digit or 9 digit zip code. 2499 * 2500 * All names must be correctly capitalized, and the zip code, if present, 2501 * must be valid for the state. The street type must be a standard USPS 2502 * spelling or abbreviation. The state or territory must also be spelled 2503 * or abbreviated using USPS standards. The house number may not exceed 2504 * five digits. 2505 * @param addr The string to search for addresses. 2506 * 2507 * @return the address, or if no address is found, return null. 2508 */ 2509 public static String findAddress(String addr) { 2510 return findAddress(addr, false); 2511 } 2512 2513 /** 2514 * @hide 2515 * Return the first substring consisting of the address of a physical 2516 * location. Currently, only addresses in the United States are detected, 2517 * and consist of: 2518 * - a house number 2519 * - a street name 2520 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2521 * - a city name 2522 * - a state or territory, either spelled out or two-letter abbr. 2523 * - an optional 5 digit or 9 digit zip code. 2524 * 2525 * Names are optionally capitalized, and the zip code, if present, 2526 * must be valid for the state. The street type must be a standard USPS 2527 * spelling or abbreviation. The state or territory must also be spelled 2528 * or abbreviated using USPS standards. The house number may not exceed 2529 * five digits. 2530 * @param addr The string to search for addresses. 2531 * @param caseInsensitive addr Set to true to make search ignore case. 2532 * 2533 * @return the address, or if no address is found, return null. 2534 */ 2535 public static String findAddress(String addr, boolean caseInsensitive) { 2536 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2537 } 2538 2539 /* 2540 * Clear the highlighting surrounding text matches created by findAll. 2541 */ 2542 public void clearMatches() { 2543 if (mNativeClass == 0) 2544 return; 2545 if (mFindIsUp) { 2546 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2547 false); 2548 mFindIsUp = false; 2549 } 2550 nativeSetFindIsUp(); 2551 // Now that the dialog has been removed, ensure that we scroll to a 2552 // location that is not beyond the end of the page. 2553 pinScrollTo(mScrollX, mScrollY, false, 0); 2554 invalidate(); 2555 } 2556 2557 /** 2558 * @hide 2559 */ 2560 public void setFindDialogHeight(int height) { 2561 if (DebugFlags.WEB_VIEW) { 2562 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2563 } 2564 mFindHeight = height; 2565 } 2566 2567 /** 2568 * Query the document to see if it contains any image references. The 2569 * message object will be dispatched with arg1 being set to 1 if images 2570 * were found and 0 if the document does not reference any images. 2571 * @param response The message that will be dispatched with the result. 2572 */ 2573 public void documentHasImages(Message response) { 2574 if (response == null) { 2575 return; 2576 } 2577 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2578 } 2579 2580 @Override 2581 public void computeScroll() { 2582 if (mScroller.computeScrollOffset()) { 2583 int oldX = mScrollX; 2584 int oldY = mScrollY; 2585 mScrollX = mScroller.getCurrX(); 2586 mScrollY = mScroller.getCurrY(); 2587 postInvalidate(); // So we draw again 2588 if (oldX != mScrollX || oldY != mScrollY) { 2589 // as onScrollChanged() is not called, sendOurVisibleRect() 2590 // needs to be call explicitly 2591 sendOurVisibleRect(); 2592 } 2593 } else { 2594 super.computeScroll(); 2595 } 2596 } 2597 2598 private static int computeDuration(int dx, int dy) { 2599 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2600 int duration = distance * 1000 / STD_SPEED; 2601 return Math.min(duration, MAX_DURATION); 2602 } 2603 2604 // helper to pin the scrollBy parameters (already in view coordinates) 2605 // returns true if the scroll was changed 2606 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2607 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2608 } 2609 // helper to pin the scrollTo parameters (already in view coordinates) 2610 // returns true if the scroll was changed 2611 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2612 x = pinLocX(x); 2613 y = pinLocY(y); 2614 int dx = x - mScrollX; 2615 int dy = y - mScrollY; 2616 2617 if ((dx | dy) == 0) { 2618 return false; 2619 } 2620 if (animate) { 2621 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2622 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2623 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2624 awakenScrollBars(mScroller.getDuration()); 2625 invalidate(); 2626 } else { 2627 abortAnimation(); // just in case 2628 scrollTo(x, y); 2629 } 2630 return true; 2631 } 2632 2633 // Scale from content to view coordinates, and pin. 2634 // Also called by jni webview.cpp 2635 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2636 if (mDrawHistory) { 2637 // disallow WebView to change the scroll position as History Picture 2638 // is used in the view system. 2639 // TODO: as we switchOutDrawHistory when trackball or navigation 2640 // keys are hit, this should be safe. Right? 2641 return false; 2642 } 2643 cx = contentToViewDimension(cx); 2644 cy = contentToViewDimension(cy); 2645 if (mHeightCanMeasure) { 2646 // move our visible rect according to scroll request 2647 if (cy != 0) { 2648 Rect tempRect = new Rect(); 2649 calcOurVisibleRect(tempRect); 2650 tempRect.offset(cx, cy); 2651 requestRectangleOnScreen(tempRect); 2652 } 2653 // FIXME: We scroll horizontally no matter what because currently 2654 // ScrollView and ListView will not scroll horizontally. 2655 // FIXME: Why do we only scroll horizontally if there is no 2656 // vertical scroll? 2657// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2658 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2659 } else { 2660 return pinScrollBy(cx, cy, animate, 0); 2661 } 2662 } 2663 2664 /** 2665 * Called by CallbackProxy when the page finishes loading. 2666 * @param url The URL of the page which has finished loading. 2667 */ 2668 /* package */ void onPageFinished(String url) { 2669 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 2670 // If the user is now on a different page, or has scrolled the page 2671 // past the point where the title bar is offscreen, ignore the 2672 // scroll request. 2673 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 2674 && mScrollX == 0 && mScrollY == 0) { 2675 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 2676 SLIDE_TITLE_DURATION); 2677 } 2678 mPageThatNeedsToSlideTitleBarOffScreen = null; 2679 } 2680 } 2681 2682 /** 2683 * The URL of a page that sent a message to scroll the title bar off screen. 2684 * 2685 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 2686 * title bar off the screen. Sometimes, the scroll position is set before 2687 * the page finishes loading. Rather than scrolling while the page is still 2688 * loading, keep track of the URL and new scroll position so we can perform 2689 * the scroll once the page finishes loading. 2690 */ 2691 private String mPageThatNeedsToSlideTitleBarOffScreen; 2692 2693 /** 2694 * The destination Y scroll position to be used when the page finishes 2695 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 2696 */ 2697 private int mYDistanceToSlideTitleOffScreen; 2698 2699 // scale from content to view coordinates, and pin 2700 // return true if pin caused the final x/y different than the request cx/cy, 2701 // and a future scroll may reach the request cx/cy after our size has 2702 // changed 2703 // return false if the view scroll to the exact position as it is requested, 2704 // where negative numbers are taken to mean 0 2705 private boolean setContentScrollTo(int cx, int cy) { 2706 if (mDrawHistory) { 2707 // disallow WebView to change the scroll position as History Picture 2708 // is used in the view system. 2709 // One known case where this is called is that WebCore tries to 2710 // restore the scroll position. As history Picture already uses the 2711 // saved scroll position, it is ok to skip this. 2712 return false; 2713 } 2714 int vx; 2715 int vy; 2716 if ((cx | cy) == 0) { 2717 // If the page is being scrolled to (0,0), do not add in the title 2718 // bar's height, and simply scroll to (0,0). (The only other work 2719 // in contentToView_ is to multiply, so this would not change 0.) 2720 vx = 0; 2721 vy = 0; 2722 } else { 2723 vx = contentToViewX(cx); 2724 vy = contentToViewY(cy); 2725 } 2726// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2727// vx + " " + vy + "]"); 2728 // Some mobile sites attempt to scroll the title bar off the page by 2729 // scrolling to (0,1). If we are at the top left corner of the 2730 // page, assume this is an attempt to scroll off the title bar, and 2731 // animate the title bar off screen slowly enough that the user can see 2732 // it. 2733 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 2734 && mTitleBar != null) { 2735 // FIXME: 100 should be defined somewhere as our max progress. 2736 if (getProgress() < 100) { 2737 // Wait to scroll the title bar off screen until the page has 2738 // finished loading. Keep track of the URL and the destination 2739 // Y position 2740 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 2741 mYDistanceToSlideTitleOffScreen = vy; 2742 } else { 2743 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2744 } 2745 // Since we are animating, we have not yet reached the desired 2746 // scroll position. Do not return true to request another attempt 2747 return false; 2748 } 2749 pinScrollTo(vx, vy, false, 0); 2750 // If the request was to scroll to a negative coordinate, treat it as if 2751 // it was a request to scroll to 0 2752 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2753 return true; 2754 } else { 2755 return false; 2756 } 2757 } 2758 2759 // scale from content to view coordinates, and pin 2760 private void spawnContentScrollTo(int cx, int cy) { 2761 if (mDrawHistory) { 2762 // disallow WebView to change the scroll position as History Picture 2763 // is used in the view system. 2764 return; 2765 } 2766 int vx = contentToViewX(cx); 2767 int vy = contentToViewY(cy); 2768 pinScrollTo(vx, vy, true, 0); 2769 } 2770 2771 /** 2772 * These are from webkit, and are in content coordinate system (unzoomed) 2773 */ 2774 private void contentSizeChanged(boolean updateLayout) { 2775 // suppress 0,0 since we usually see real dimensions soon after 2776 // this avoids drawing the prev content in a funny place. If we find a 2777 // way to consolidate these notifications, this check may become 2778 // obsolete 2779 if ((mContentWidth | mContentHeight) == 0) { 2780 return; 2781 } 2782 2783 if (mHeightCanMeasure) { 2784 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2785 || updateLayout) { 2786 requestLayout(); 2787 } 2788 } else if (mWidthCanMeasure) { 2789 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2790 || updateLayout) { 2791 requestLayout(); 2792 } 2793 } else { 2794 // If we don't request a layout, try to send our view size to the 2795 // native side to ensure that WebCore has the correct dimensions. 2796 sendViewSizeZoom(); 2797 } 2798 } 2799 2800 /** 2801 * Set the WebViewClient that will receive various notifications and 2802 * requests. This will replace the current handler. 2803 * @param client An implementation of WebViewClient. 2804 */ 2805 public void setWebViewClient(WebViewClient client) { 2806 mCallbackProxy.setWebViewClient(client); 2807 } 2808 2809 /** 2810 * Gets the WebViewClient 2811 * @return the current WebViewClient instance. 2812 * 2813 *@hide pending API council approval. 2814 */ 2815 public WebViewClient getWebViewClient() { 2816 return mCallbackProxy.getWebViewClient(); 2817 } 2818 2819 /** 2820 * Register the interface to be used when content can not be handled by 2821 * the rendering engine, and should be downloaded instead. This will replace 2822 * the current handler. 2823 * @param listener An implementation of DownloadListener. 2824 */ 2825 public void setDownloadListener(DownloadListener listener) { 2826 mCallbackProxy.setDownloadListener(listener); 2827 } 2828 2829 /** 2830 * Set the chrome handler. This is an implementation of WebChromeClient for 2831 * use in handling Javascript dialogs, favicons, titles, and the progress. 2832 * This will replace the current handler. 2833 * @param client An implementation of WebChromeClient. 2834 */ 2835 public void setWebChromeClient(WebChromeClient client) { 2836 mCallbackProxy.setWebChromeClient(client); 2837 } 2838 2839 /** 2840 * Gets the chrome handler. 2841 * @return the current WebChromeClient instance. 2842 * 2843 * @hide API council approval. 2844 */ 2845 public WebChromeClient getWebChromeClient() { 2846 return mCallbackProxy.getWebChromeClient(); 2847 } 2848 2849 /** 2850 * Set the Picture listener. This is an interface used to receive 2851 * notifications of a new Picture. 2852 * @param listener An implementation of WebView.PictureListener. 2853 */ 2854 public void setPictureListener(PictureListener listener) { 2855 mPictureListener = listener; 2856 } 2857 2858 /** 2859 * {@hide} 2860 */ 2861 /* FIXME: Debug only! Remove for SDK! */ 2862 public void externalRepresentation(Message callback) { 2863 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2864 } 2865 2866 /** 2867 * {@hide} 2868 */ 2869 /* FIXME: Debug only! Remove for SDK! */ 2870 public void documentAsText(Message callback) { 2871 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2872 } 2873 2874 /** 2875 * Use this function to bind an object to Javascript so that the 2876 * methods can be accessed from Javascript. 2877 * <p><strong>IMPORTANT:</strong> 2878 * <ul> 2879 * <li> Using addJavascriptInterface() allows JavaScript to control your 2880 * application. This can be a very useful feature or a dangerous security 2881 * issue. When the HTML in the WebView is untrustworthy (for example, part 2882 * or all of the HTML is provided by some person or process), then an 2883 * attacker could inject HTML that will execute your code and possibly any 2884 * code of the attacker's choosing.<br> 2885 * Do not use addJavascriptInterface() unless all of the HTML in this 2886 * WebView was written by you.</li> 2887 * <li> The Java object that is bound runs in another thread and not in 2888 * the thread that it was constructed in.</li> 2889 * </ul></p> 2890 * @param obj The class instance to bind to Javascript 2891 * @param interfaceName The name to used to expose the class in Javascript 2892 */ 2893 public void addJavascriptInterface(Object obj, String interfaceName) { 2894 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2895 arg.mObject = obj; 2896 arg.mInterfaceName = interfaceName; 2897 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2898 } 2899 2900 /** 2901 * Return the WebSettings object used to control the settings for this 2902 * WebView. 2903 * @return A WebSettings object that can be used to control this WebView's 2904 * settings. 2905 */ 2906 public WebSettings getSettings() { 2907 return mWebViewCore.getSettings(); 2908 } 2909 2910 /** 2911 * Return the list of currently loaded plugins. 2912 * @return The list of currently loaded plugins. 2913 * 2914 * @deprecated This was used for Gears, which has been deprecated. 2915 */ 2916 @Deprecated 2917 public static synchronized PluginList getPluginList() { 2918 return new PluginList(); 2919 } 2920 2921 /** 2922 * @deprecated This was used for Gears, which has been deprecated. 2923 */ 2924 @Deprecated 2925 public void refreshPlugins(boolean reloadOpenPages) { } 2926 2927 //------------------------------------------------------------------------- 2928 // Override View methods 2929 //------------------------------------------------------------------------- 2930 2931 @Override 2932 protected void finalize() throws Throwable { 2933 try { 2934 destroy(); 2935 } finally { 2936 super.finalize(); 2937 } 2938 } 2939 2940 @Override 2941 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 2942 if (child == mTitleBar) { 2943 // When drawing the title bar, move it horizontally to always show 2944 // at the top of the WebView. 2945 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 2946 } 2947 return super.drawChild(canvas, child, drawingTime); 2948 } 2949 2950 private void drawContent(Canvas canvas) { 2951 // Update the buttons in the picture, so when we draw the picture 2952 // to the screen, they are in the correct state. 2953 // Tell the native side if user is a) touching the screen, 2954 // b) pressing the trackball down, or c) pressing the enter key 2955 // If the cursor is on a button, we need to draw it in the pressed 2956 // state. 2957 // If mNativeClass is 0, we should not reach here, so we do not 2958 // need to check it again. 2959 nativeRecordButtons(hasFocus() && hasWindowFocus(), 2960 mTouchMode == TOUCH_SHORTPRESS_START_MODE 2961 || mTrackballDown || mGotCenterDown, false); 2962 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 2963 } 2964 2965 @Override 2966 protected void onDraw(Canvas canvas) { 2967 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 2968 if (mNativeClass == 0) { 2969 return; 2970 } 2971 2972 int saveCount = canvas.save(); 2973 if (mTitleBar != null) { 2974 canvas.translate(0, (int) mTitleBar.getHeight()); 2975 } 2976 if (mDragTrackerHandler == null) { 2977 drawContent(canvas); 2978 } else { 2979 if (!mDragTrackerHandler.draw(canvas)) { 2980 // sometimes the tracker doesn't draw, even though its active 2981 drawContent(canvas); 2982 } 2983 if (mDragTrackerHandler.isFinished()) { 2984 mDragTrackerHandler = null; 2985 } 2986 } 2987 canvas.restoreToCount(saveCount); 2988 2989 // Now draw the shadow. 2990 if (mTitleBar != null) { 2991 int y = mScrollY + getVisibleTitleHeight(); 2992 int height = (int) (5f * getContext().getResources() 2993 .getDisplayMetrics().density); 2994 mTitleShadow.setBounds(mScrollX, y, mScrollX + getWidth(), 2995 y + height); 2996 mTitleShadow.draw(canvas); 2997 } 2998 if (AUTO_REDRAW_HACK && mAutoRedraw) { 2999 invalidate(); 3000 } 3001 mWebViewCore.signalRepaintDone(); 3002 } 3003 3004 @Override 3005 public void setLayoutParams(ViewGroup.LayoutParams params) { 3006 if (params.height == LayoutParams.WRAP_CONTENT) { 3007 mWrapContent = true; 3008 } 3009 super.setLayoutParams(params); 3010 } 3011 3012 @Override 3013 public boolean performLongClick() { 3014 // performLongClick() is the result of a delayed message. If we switch 3015 // to windows overview, the WebView will be temporarily removed from the 3016 // view system. In that case, do nothing. 3017 if (getParent() == null) return false; 3018 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3019 // Send the click so that the textfield is in focus 3020 centerKeyPressOnTextField(); 3021 rebuildWebTextView(); 3022 } 3023 if (inEditingMode()) { 3024 return mWebTextView.performLongClick(); 3025 } else { 3026 return super.performLongClick(); 3027 } 3028 } 3029 3030 boolean inAnimateZoom() { 3031 return mZoomScale != 0; 3032 } 3033 3034 /** 3035 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3036 * has changed. This is especially important for password fields, which are 3037 * drawn by the WebTextView, since it conveys more information than what 3038 * webkit draws. Thus we need to reposition it to show in the correct 3039 * place. 3040 */ 3041 private boolean mNeedToAdjustWebTextView; 3042 3043 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3044 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3045 Rect vBox = contentToViewRect(contentBounds); 3046 Rect visibleRect = new Rect(); 3047 calcOurVisibleRect(visibleRect); 3048 // The IME may have shown, resulting in the textfield being offscreen. 3049 // If so, the textfield will be scrolled on screen, so treat it as 3050 // though it is on screen. If it is on screen, place the WebTextView in 3051 // its new place, accounting for our new scroll/zoom values. 3052 InputMethodManager imm = InputMethodManager.peekInstance(); 3053 if ((imm != null && imm.isActive(mWebTextView)) 3054 || (allowIntersect ? Rect.intersects(visibleRect, vBox) 3055 : visibleRect.contains(vBox))) { 3056 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3057 vBox.height()); 3058 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3059 contentToViewDimension( 3060 nativeFocusCandidateTextSize())); 3061 return true; 3062 } else { 3063 // The textfield is now off screen. The user probably 3064 // was not zooming to see the textfield better. Remove 3065 // the WebTextView. If the user types a key, and the 3066 // textfield is still in focus, we will reconstruct 3067 // the WebTextView and scroll it back on screen. 3068 mWebTextView.remove(); 3069 return false; 3070 } 3071 } 3072 3073 private void drawLayers(Canvas canvas) { 3074 if (mRootLayer != 0) { 3075 int scrollY = computeVerticalScrollOffset(); 3076 int viewHeight = getHeight() - getVisibleTitleHeight(); 3077 3078 nativeDrawLayers(mRootLayer, mScrollX, scrollY, 3079 getWidth(), viewHeight, 3080 mActualScale, canvas); 3081 } 3082 } 3083 3084 private void drawCoreAndCursorRing(Canvas canvas, int color, 3085 boolean drawCursorRing) { 3086 if (mDrawHistory) { 3087 canvas.scale(mActualScale, mActualScale); 3088 canvas.drawPicture(mHistoryPicture); 3089 drawLayers(canvas); 3090 return; 3091 } 3092 3093 boolean animateZoom = mZoomScale != 0; 3094 boolean animateScroll = (!mScroller.isFinished() 3095 || mVelocityTracker != null) 3096 && (mTouchMode != TOUCH_DRAG_MODE || 3097 mHeldMotionless != MOTIONLESS_TRUE); 3098 if (mTouchMode == TOUCH_DRAG_MODE) { 3099 if (mHeldMotionless == MOTIONLESS_PENDING) { 3100 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3101 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3102 mHeldMotionless = MOTIONLESS_FALSE; 3103 } 3104 if (mHeldMotionless == MOTIONLESS_FALSE) { 3105 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3106 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3107 mHeldMotionless = MOTIONLESS_PENDING; 3108 } 3109 } 3110 if (animateZoom) { 3111 float zoomScale; 3112 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 3113 if (interval < ZOOM_ANIMATION_LENGTH) { 3114 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 3115 zoomScale = 1.0f / (mInvInitialZoomScale 3116 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 3117 invalidate(); 3118 } else { 3119 zoomScale = mZoomScale; 3120 // set mZoomScale to be 0 as we have done animation 3121 mZoomScale = 0; 3122 WebViewCore.resumeUpdatePicture(mWebViewCore); 3123 // call invalidate() again to draw with the final filters 3124 invalidate(); 3125 if (mNeedToAdjustWebTextView) { 3126 mNeedToAdjustWebTextView = false; 3127 if (didUpdateTextViewBounds(false) 3128 && nativeFocusCandidateIsPassword()) { 3129 // If it is a password field, start drawing the 3130 // WebTextView once again. 3131 mWebTextView.setInPassword(true); 3132 } 3133 } 3134 } 3135 // calculate the intermediate scroll position. As we need to use 3136 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 3137 float scale = zoomScale * mInvInitialZoomScale; 3138 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 3139 - mZoomCenterX); 3140 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 3141 * zoomScale)) + mScrollX; 3142 int titleHeight = getTitleHeight(); 3143 int ty = Math.round(scale 3144 * (mInitialScrollY + mZoomCenterY - titleHeight) 3145 - (mZoomCenterY - titleHeight)); 3146 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 3147 - titleHeight, getViewHeight(), Math.round(mContentHeight 3148 * zoomScale)) + titleHeight) + mScrollY; 3149 canvas.translate(tx, ty); 3150 canvas.scale(zoomScale, zoomScale); 3151 if (inEditingMode() && !mNeedToAdjustWebTextView 3152 && mZoomScale != 0) { 3153 // The WebTextView is up. Keep track of this so we can adjust 3154 // its size and placement when we finish zooming 3155 mNeedToAdjustWebTextView = true; 3156 // If it is in password mode, turn it off so it does not draw 3157 // misplaced. 3158 if (nativeFocusCandidateIsPassword()) { 3159 mWebTextView.setInPassword(false); 3160 } 3161 } 3162 } else { 3163 canvas.scale(mActualScale, mActualScale); 3164 } 3165 3166 mWebViewCore.drawContentPicture(canvas, color, 3167 (animateZoom || mPreviewZoomOnly), animateScroll); 3168 3169 drawLayers(canvas); 3170 3171 if (mNativeClass == 0) return; 3172 if (mShiftIsPressed && !(animateZoom || mPreviewZoomOnly)) { 3173 if (mTouchSelection || mExtendSelection) { 3174 nativeDrawSelectionRegion(canvas); 3175 } 3176 if (!mTouchSelection) { 3177 nativeDrawSelectionPointer(canvas, mInvActualScale, mSelectX, 3178 mSelectY - getTitleHeight(), mExtendSelection); 3179 } 3180 } else if (drawCursorRing) { 3181 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3182 mTouchMode = TOUCH_SHORTPRESS_MODE; 3183 HitTestResult hitTest = getHitTestResult(); 3184 if (mPreventLongPress || (hitTest != null && 3185 hitTest.mType != HitTestResult.UNKNOWN_TYPE)) { 3186 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3187 .obtainMessage(SWITCH_TO_LONGPRESS), 3188 LONG_PRESS_TIMEOUT); 3189 } 3190 } 3191 nativeDrawCursorRing(canvas); 3192 } 3193 // When the FindDialog is up, only draw the matches if we are not in 3194 // the process of scrolling them into view. 3195 if (mFindIsUp && !animateScroll) { 3196 nativeDrawMatches(canvas); 3197 } 3198 if (mFocusSizeChanged) { 3199 mFocusSizeChanged = false; 3200 // If we are zooming, this will get handled above, when the zoom 3201 // finishes. We also do not need to do this unless the WebTextView 3202 // is showing. 3203 if (!animateZoom && inEditingMode()) { 3204 didUpdateTextViewBounds(true); 3205 } 3206 } 3207 } 3208 3209 // draw history 3210 private boolean mDrawHistory = false; 3211 private Picture mHistoryPicture = null; 3212 private int mHistoryWidth = 0; 3213 private int mHistoryHeight = 0; 3214 3215 // Only check the flag, can be called from WebCore thread 3216 boolean drawHistory() { 3217 return mDrawHistory; 3218 } 3219 3220 // Should only be called in UI thread 3221 void switchOutDrawHistory() { 3222 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3223 if (mDrawHistory && mWebViewCore.pictureReady()) { 3224 mDrawHistory = false; 3225 invalidate(); 3226 int oldScrollX = mScrollX; 3227 int oldScrollY = mScrollY; 3228 mScrollX = pinLocX(mScrollX); 3229 mScrollY = pinLocY(mScrollY); 3230 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3231 mUserScroll = false; 3232 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3233 oldScrollY); 3234 } 3235 sendOurVisibleRect(); 3236 } 3237 } 3238 3239 WebViewCore.CursorData cursorData() { 3240 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3241 result.mMoveGeneration = nativeMoveGeneration(); 3242 result.mFrame = nativeCursorFramePointer(); 3243 Point position = nativeCursorPosition(); 3244 result.mX = position.x; 3245 result.mY = position.y; 3246 return result; 3247 } 3248 3249 /** 3250 * Delete text from start to end in the focused textfield. If there is no 3251 * focus, or if start == end, silently fail. If start and end are out of 3252 * order, swap them. 3253 * @param start Beginning of selection to delete. 3254 * @param end End of selection to delete. 3255 */ 3256 /* package */ void deleteSelection(int start, int end) { 3257 mTextGeneration++; 3258 WebViewCore.TextSelectionData data 3259 = new WebViewCore.TextSelectionData(start, end); 3260 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3261 data); 3262 } 3263 3264 /** 3265 * Set the selection to (start, end) in the focused textfield. If start and 3266 * end are out of order, swap them. 3267 * @param start Beginning of selection. 3268 * @param end End of selection. 3269 */ 3270 /* package */ void setSelection(int start, int end) { 3271 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3272 } 3273 3274 @Override 3275 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3276 InputConnection connection = super.onCreateInputConnection(outAttrs); 3277 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3278 return connection; 3279 } 3280 3281 /** 3282 * Called in response to a message from webkit telling us that the soft 3283 * keyboard should be launched. 3284 */ 3285 private void displaySoftKeyboard(boolean isTextView) { 3286 InputMethodManager imm = (InputMethodManager) 3287 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3288 3289 if (isTextView) { 3290 rebuildWebTextView(); 3291 if (!inEditingMode()) return; 3292 imm.showSoftInput(mWebTextView, 0); 3293 // bring it back to the default scale so that user can enter text 3294 if (mActualScale < mDefaultScale) { 3295 mInZoomOverview = false; 3296 mZoomCenterX = mLastTouchX; 3297 mZoomCenterY = mLastTouchY; 3298 // do not change text wrap scale so that there is no reflow 3299 setNewZoomScale(mDefaultScale, false, false); 3300 didUpdateTextViewBounds(true); 3301 } 3302 } 3303 else { // used by plugins 3304 imm.showSoftInput(this, 0); 3305 } 3306 } 3307 3308 // Called by WebKit to instruct the UI to hide the keyboard 3309 private void hideSoftKeyboard() { 3310 InputMethodManager imm = (InputMethodManager) 3311 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3312 3313 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3314 } 3315 3316 /* 3317 * This method checks the current focus and cursor and potentially rebuilds 3318 * mWebTextView to have the appropriate properties, such as password, 3319 * multiline, and what text it contains. It also removes it if necessary. 3320 */ 3321 /* package */ void rebuildWebTextView() { 3322 // If the WebView does not have focus, do nothing until it gains focus. 3323 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3324 return; 3325 } 3326 boolean alreadyThere = inEditingMode(); 3327 // inEditingMode can only return true if mWebTextView is non-null, 3328 // so we can safely call remove() if (alreadyThere) 3329 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3330 if (alreadyThere) { 3331 mWebTextView.remove(); 3332 } 3333 return; 3334 } 3335 // At this point, we know we have found an input field, so go ahead 3336 // and create the WebTextView if necessary. 3337 if (mWebTextView == null) { 3338 mWebTextView = new WebTextView(mContext, WebView.this); 3339 // Initialize our generation number. 3340 mTextGeneration = 0; 3341 } 3342 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3343 contentToViewDimension(nativeFocusCandidateTextSize())); 3344 Rect visibleRect = new Rect(); 3345 calcOurContentVisibleRect(visibleRect); 3346 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3347 // should be in content coordinates. 3348 Rect bounds = nativeFocusCandidateNodeBounds(); 3349 Rect vBox = contentToViewRect(bounds); 3350 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3351 if (!Rect.intersects(bounds, visibleRect)) { 3352 mWebTextView.bringIntoView(); 3353 } 3354 String text = nativeFocusCandidateText(); 3355 int nodePointer = nativeFocusCandidatePointer(); 3356 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3357 // It is possible that we have the same textfield, but it has moved, 3358 // i.e. In the case of opening/closing the screen. 3359 // In that case, we need to set the dimensions, but not the other 3360 // aspects. 3361 // If the text has been changed by webkit, update it. However, if 3362 // there has been more UI text input, ignore it. We will receive 3363 // another update when that text is recognized. 3364 if (text != null && !text.equals(mWebTextView.getText().toString()) 3365 && nativeTextGeneration() == mTextGeneration) { 3366 mWebTextView.setTextAndKeepSelection(text); 3367 } 3368 } else { 3369 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3370 Gravity.RIGHT : Gravity.NO_GRAVITY); 3371 // This needs to be called before setType, which may call 3372 // requestFormData, and it needs to have the correct nodePointer. 3373 mWebTextView.setNodePointer(nodePointer); 3374 mWebTextView.setType(nativeFocusCandidateType()); 3375 if (null == text) { 3376 if (DebugFlags.WEB_VIEW) { 3377 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3378 } 3379 text = ""; 3380 } 3381 mWebTextView.setTextAndKeepSelection(text); 3382 InputMethodManager imm = InputMethodManager.peekInstance(); 3383 if (imm != null && imm.isActive(mWebTextView)) { 3384 imm.restartInput(mWebTextView); 3385 } 3386 } 3387 mWebTextView.requestFocus(); 3388 } 3389 3390 /** 3391 * Called by WebTextView to find saved form data associated with the 3392 * textfield 3393 * @param name Name of the textfield. 3394 * @param nodePointer Pointer to the node of the textfield, so it can be 3395 * compared to the currently focused textfield when the data is 3396 * retrieved. 3397 */ 3398 /* package */ void requestFormData(String name, int nodePointer) { 3399 if (mWebViewCore.getSettings().getSaveFormData()) { 3400 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3401 update.arg1 = nodePointer; 3402 RequestFormData updater = new RequestFormData(name, getUrl(), 3403 update); 3404 Thread t = new Thread(updater); 3405 t.start(); 3406 } 3407 } 3408 3409 /** 3410 * Pass a message to find out the <label> associated with the <input> 3411 * identified by nodePointer 3412 * @param framePointer Pointer to the frame containing the <input> node 3413 * @param nodePointer Pointer to the node for which a <label> is desired. 3414 */ 3415 /* package */ void requestLabel(int framePointer, int nodePointer) { 3416 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3417 nodePointer); 3418 } 3419 3420 /* 3421 * This class runs the layers animations in their own thread, 3422 * so that we do not slow down the UI. 3423 */ 3424 private class EvaluateLayersAnimations extends Thread { 3425 boolean mRunning = true; 3426 // delay corresponds to 40fps, no need to go faster. 3427 int mDelay = 25; // in ms 3428 public void run() { 3429 while (mRunning) { 3430 if (mLayersHaveAnimations && mRootLayer != 0) { 3431 // updates is a C++ pointer to a Vector of AnimationValues 3432 int updates = nativeEvaluateLayersAnimations(mRootLayer); 3433 if (updates == 0) { 3434 mRunning = false; 3435 } 3436 Message.obtain(mPrivateHandler, 3437 WebView.IMMEDIATE_REPAINT_MSG_ID, 3438 updates, 0).sendToTarget(); 3439 } else { 3440 mRunning = false; 3441 } 3442 try { 3443 Thread.currentThread().sleep(mDelay); 3444 } catch (InterruptedException e) { 3445 mRunning = false; 3446 } 3447 } 3448 } 3449 public void cancel() { 3450 mRunning = false; 3451 } 3452 } 3453 3454 /* 3455 * This class requests an Adapter for the WebTextView which shows past 3456 * entries stored in the database. It is a Runnable so that it can be done 3457 * in its own thread, without slowing down the UI. 3458 */ 3459 private class RequestFormData implements Runnable { 3460 private String mName; 3461 private String mUrl; 3462 private Message mUpdateMessage; 3463 3464 public RequestFormData(String name, String url, Message msg) { 3465 mName = name; 3466 mUrl = url; 3467 mUpdateMessage = msg; 3468 } 3469 3470 public void run() { 3471 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3472 if (pastEntries.size() > 0) { 3473 AutoCompleteAdapter adapter = new 3474 AutoCompleteAdapter(mContext, pastEntries); 3475 mUpdateMessage.obj = adapter; 3476 mUpdateMessage.sendToTarget(); 3477 } 3478 } 3479 } 3480 3481 /** 3482 * Dump the display tree to "/sdcard/displayTree.txt" 3483 * 3484 * @hide debug only 3485 */ 3486 public void dumpDisplayTree() { 3487 nativeDumpDisplayTree(getUrl()); 3488 } 3489 3490 /** 3491 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 3492 * "/sdcard/domTree.txt" 3493 * 3494 * @hide debug only 3495 */ 3496 public void dumpDomTree(boolean toFile) { 3497 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 3498 } 3499 3500 /** 3501 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 3502 * to "/sdcard/renderTree.txt" 3503 * 3504 * @hide debug only 3505 */ 3506 public void dumpRenderTree(boolean toFile) { 3507 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 3508 } 3509 3510 /** 3511 * Dump the V8 counters to standard output. 3512 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 3513 * true. Otherwise, this will do nothing. 3514 * 3515 * @hide debug only 3516 */ 3517 public void dumpV8Counters() { 3518 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 3519 } 3520 3521 // This is used to determine long press with the center key. Does not 3522 // affect long press with the trackball/touch. 3523 private boolean mGotCenterDown = false; 3524 3525 @Override 3526 public boolean onKeyDown(int keyCode, KeyEvent event) { 3527 if (DebugFlags.WEB_VIEW) { 3528 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3529 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3530 } 3531 3532 if (mNativeClass == 0) { 3533 return false; 3534 } 3535 3536 // do this hack up front, so it always works, regardless of touch-mode 3537 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3538 mAutoRedraw = !mAutoRedraw; 3539 if (mAutoRedraw) { 3540 invalidate(); 3541 } 3542 return true; 3543 } 3544 3545 // Bubble up the key event if 3546 // 1. it is a system key; or 3547 // 2. the host application wants to handle it; 3548 if (event.isSystem() 3549 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3550 return false; 3551 } 3552 3553 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3554 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3555 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3556 setUpSelectXY(); 3557 } 3558 3559 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3560 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3561 // always handle the navigation keys in the UI thread 3562 switchOutDrawHistory(); 3563 if (mShiftIsPressed) { 3564 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 3565 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 3566 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 3567 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 3568 int multiplier = event.getRepeatCount() + 1; 3569 moveSelection(xRate * multiplier, yRate * multiplier); 3570 return true; 3571 } 3572 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3573 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3574 return true; 3575 } 3576 // Bubble up the key event as WebView doesn't handle it 3577 return false; 3578 } 3579 3580 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3581 switchOutDrawHistory(); 3582 if (event.getRepeatCount() == 0) { 3583 if (mShiftIsPressed) { 3584 return true; // discard press if copy in progress 3585 } 3586 mGotCenterDown = true; 3587 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3588 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3589 // Already checked mNativeClass, so we do not need to check it 3590 // again. 3591 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3592 return true; 3593 } 3594 // Bubble up the key event as WebView doesn't handle it 3595 return false; 3596 } 3597 3598 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3599 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3600 // turn off copy select if a shift-key combo is pressed 3601 mExtendSelection = mShiftIsPressed = false; 3602 if (mTouchMode == TOUCH_SELECT_MODE) { 3603 mTouchMode = TOUCH_INIT_MODE; 3604 } 3605 } 3606 3607 if (getSettings().getNavDump()) { 3608 switch (keyCode) { 3609 case KeyEvent.KEYCODE_4: 3610 dumpDisplayTree(); 3611 break; 3612 case KeyEvent.KEYCODE_5: 3613 case KeyEvent.KEYCODE_6: 3614 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 3615 break; 3616 case KeyEvent.KEYCODE_7: 3617 case KeyEvent.KEYCODE_8: 3618 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 3619 break; 3620 case KeyEvent.KEYCODE_9: 3621 nativeInstrumentReport(); 3622 return true; 3623 } 3624 } 3625 3626 if (nativeCursorIsTextInput()) { 3627 // This message will put the node in focus, for the DOM's notion 3628 // of focus, and make the focuscontroller active 3629 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3630 nativeCursorNodePointer()); 3631 // This will bring up the WebTextView and put it in focus, for 3632 // our view system's notion of focus 3633 rebuildWebTextView(); 3634 // Now we need to pass the event to it 3635 if (inEditingMode()) { 3636 mWebTextView.setDefaultSelection(); 3637 return mWebTextView.dispatchKeyEvent(event); 3638 } 3639 } else if (nativeHasFocusNode()) { 3640 // In this case, the cursor is not on a text input, but the focus 3641 // might be. Check it, and if so, hand over to the WebTextView. 3642 rebuildWebTextView(); 3643 if (inEditingMode()) { 3644 return mWebTextView.dispatchKeyEvent(event); 3645 } 3646 } 3647 3648 // TODO: should we pass all the keys to DOM or check the meta tag 3649 if (nativeCursorWantsKeyEvents() || true) { 3650 // pass the key to DOM 3651 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3652 // return true as DOM handles the key 3653 return true; 3654 } 3655 3656 // Bubble up the key event as WebView doesn't handle it 3657 return false; 3658 } 3659 3660 @Override 3661 public boolean onKeyUp(int keyCode, KeyEvent event) { 3662 if (DebugFlags.WEB_VIEW) { 3663 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3664 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3665 } 3666 3667 if (mNativeClass == 0) { 3668 return false; 3669 } 3670 3671 // special CALL handling when cursor node's href is "tel:XXX" 3672 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3673 String text = nativeCursorText(); 3674 if (!nativeCursorIsTextInput() && text != null 3675 && text.startsWith(SCHEME_TEL)) { 3676 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3677 getContext().startActivity(intent); 3678 return true; 3679 } 3680 } 3681 3682 // Bubble up the key event if 3683 // 1. it is a system key; or 3684 // 2. the host application wants to handle it; 3685 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3686 return false; 3687 } 3688 3689 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3690 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3691 if (commitCopy()) { 3692 return true; 3693 } 3694 } 3695 3696 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3697 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3698 // always handle the navigation keys in the UI thread 3699 // Bubble up the key event as WebView doesn't handle it 3700 return false; 3701 } 3702 3703 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3704 // remove the long press message first 3705 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3706 mGotCenterDown = false; 3707 3708 if (mShiftIsPressed) { 3709 if (mExtendSelection) { 3710 commitCopy(); 3711 } else { 3712 mExtendSelection = true; 3713 invalidate(); // draw the i-beam instead of the arrow 3714 } 3715 return true; // discard press if copy in progress 3716 } 3717 3718 // perform the single click 3719 Rect visibleRect = sendOurVisibleRect(); 3720 // Note that sendOurVisibleRect calls viewToContent, so the 3721 // coordinates should be in content coordinates. 3722 if (!nativeCursorIntersects(visibleRect)) { 3723 return false; 3724 } 3725 WebViewCore.CursorData data = cursorData(); 3726 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3727 playSoundEffect(SoundEffectConstants.CLICK); 3728 if (nativeCursorIsTextInput()) { 3729 rebuildWebTextView(); 3730 centerKeyPressOnTextField(); 3731 if (inEditingMode()) { 3732 mWebTextView.setDefaultSelection(); 3733 } 3734 return true; 3735 } 3736 nativeSetFollowedLink(true); 3737 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 3738 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3739 nativeCursorNodePointer()); 3740 } 3741 return true; 3742 } 3743 3744 // TODO: should we pass all the keys to DOM or check the meta tag 3745 if (nativeCursorWantsKeyEvents() || true) { 3746 // pass the key to DOM 3747 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3748 // return true as DOM handles the key 3749 return true; 3750 } 3751 3752 // Bubble up the key event as WebView doesn't handle it 3753 return false; 3754 } 3755 3756 private void setUpSelectXY() { 3757 mExtendSelection = false; 3758 mShiftIsPressed = true; 3759 if (nativeHasCursorNode()) { 3760 Rect rect = nativeCursorNodeBounds(); 3761 mSelectX = contentToViewX(rect.left); 3762 mSelectY = contentToViewY(rect.top); 3763 } else if (mLastTouchY > getVisibleTitleHeight()) { 3764 mSelectX = mScrollX + (int) mLastTouchX; 3765 mSelectY = mScrollY + (int) mLastTouchY; 3766 } else { 3767 mSelectX = mScrollX + getViewWidth() / 2; 3768 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 3769 } 3770 nativeHideCursor(); 3771 } 3772 3773 public void emulateShiftHeld() { 3774 if (0 == mNativeClass) return; // client isn't initialized 3775 setUpSelectXY(); 3776 } 3777 3778 private boolean commitCopy() { 3779 boolean copiedSomething = false; 3780 if (mExtendSelection) { 3781 String selection = nativeGetSelection(); 3782 if (selection != "") { 3783 if (DebugFlags.WEB_VIEW) { 3784 Log.v(LOGTAG, "commitCopy \"" + selection + "\""); 3785 } 3786 Toast.makeText(mContext 3787 , com.android.internal.R.string.text_copied 3788 , Toast.LENGTH_SHORT).show(); 3789 copiedSomething = true; 3790 try { 3791 IClipboard clip = IClipboard.Stub.asInterface( 3792 ServiceManager.getService("clipboard")); 3793 clip.setClipboardText(selection); 3794 } catch (android.os.RemoteException e) { 3795 Log.e(LOGTAG, "Clipboard failed", e); 3796 } 3797 } 3798 mExtendSelection = false; 3799 } 3800 mShiftIsPressed = false; 3801 invalidate(); // remove selection region and pointer 3802 if (mTouchMode == TOUCH_SELECT_MODE) { 3803 mTouchMode = TOUCH_INIT_MODE; 3804 } 3805 return copiedSomething; 3806 } 3807 3808 @Override 3809 protected void onAttachedToWindow() { 3810 super.onAttachedToWindow(); 3811 if (hasWindowFocus()) onWindowFocusChanged(true); 3812 } 3813 3814 @Override 3815 protected void onDetachedFromWindow() { 3816 clearTextEntry(); 3817 super.onDetachedFromWindow(); 3818 // Clean up the zoom controller 3819 mZoomButtonsController.setVisible(false); 3820 } 3821 3822 /** 3823 * @deprecated WebView no longer needs to implement 3824 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3825 */ 3826 @Deprecated 3827 public void onChildViewAdded(View parent, View child) {} 3828 3829 /** 3830 * @deprecated WebView no longer needs to implement 3831 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3832 */ 3833 @Deprecated 3834 public void onChildViewRemoved(View p, View child) {} 3835 3836 /** 3837 * @deprecated WebView should not have implemented 3838 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3839 * does nothing now. 3840 */ 3841 @Deprecated 3842 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3843 } 3844 3845 // To avoid drawing the cursor ring, and remove the TextView when our window 3846 // loses focus. 3847 @Override 3848 public void onWindowFocusChanged(boolean hasWindowFocus) { 3849 if (hasWindowFocus) { 3850 if (hasFocus()) { 3851 // If our window regained focus, and we have focus, then begin 3852 // drawing the cursor ring 3853 mDrawCursorRing = true; 3854 if (mNativeClass != 0) { 3855 nativeRecordButtons(true, false, true); 3856 if (inEditingMode()) { 3857 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3858 } 3859 } 3860 } else { 3861 // If our window gained focus, but we do not have it, do not 3862 // draw the cursor ring. 3863 mDrawCursorRing = false; 3864 // We do not call nativeRecordButtons here because we assume 3865 // that when we lost focus, or window focus, it got called with 3866 // false for the first parameter 3867 } 3868 } else { 3869 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3870 /* 3871 * The zoom controls come in their own window, so our window 3872 * loses focus. Our policy is to not draw the cursor ring if 3873 * our window is not focused, but this is an exception since 3874 * the user can still navigate the web page with the zoom 3875 * controls showing. 3876 */ 3877 // If our window has lost focus, stop drawing the cursor ring 3878 mDrawCursorRing = false; 3879 } 3880 mGotKeyDown = false; 3881 mShiftIsPressed = false; 3882 if (mNativeClass != 0) { 3883 nativeRecordButtons(false, false, true); 3884 } 3885 setFocusControllerInactive(); 3886 } 3887 invalidate(); 3888 super.onWindowFocusChanged(hasWindowFocus); 3889 } 3890 3891 /* 3892 * Pass a message to WebCore Thread, telling the WebCore::Page's 3893 * FocusController to be "inactive" so that it will 3894 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3895 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3896 */ 3897 /* package */ void setFocusControllerInactive() { 3898 // Do not need to also check whether mWebViewCore is null, because 3899 // mNativeClass is only set if mWebViewCore is non null 3900 if (mNativeClass == 0) return; 3901 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 3902 } 3903 3904 @Override 3905 protected void onFocusChanged(boolean focused, int direction, 3906 Rect previouslyFocusedRect) { 3907 if (DebugFlags.WEB_VIEW) { 3908 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3909 } 3910 if (focused) { 3911 // When we regain focus, if we have window focus, resume drawing 3912 // the cursor ring 3913 if (hasWindowFocus()) { 3914 mDrawCursorRing = true; 3915 if (mNativeClass != 0) { 3916 nativeRecordButtons(true, false, true); 3917 } 3918 //} else { 3919 // The WebView has gained focus while we do not have 3920 // windowfocus. When our window lost focus, we should have 3921 // called nativeRecordButtons(false...) 3922 } 3923 } else { 3924 // When we lost focus, unless focus went to the TextView (which is 3925 // true if we are in editing mode), stop drawing the cursor ring. 3926 if (!inEditingMode()) { 3927 mDrawCursorRing = false; 3928 if (mNativeClass != 0) { 3929 nativeRecordButtons(false, false, true); 3930 } 3931 setFocusControllerInactive(); 3932 } 3933 mGotKeyDown = false; 3934 } 3935 3936 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3937 } 3938 3939 /** 3940 * @hide 3941 */ 3942 @Override 3943 protected boolean setFrame(int left, int top, int right, int bottom) { 3944 boolean changed = super.setFrame(left, top, right, bottom); 3945 if (!changed && mHeightCanMeasure) { 3946 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 3947 // in WebViewCore after we get the first layout. We do call 3948 // requestLayout() when we get contentSizeChanged(). But the View 3949 // system won't call onSizeChanged if the dimension is not changed. 3950 // In this case, we need to call sendViewSizeZoom() explicitly to 3951 // notify the WebKit about the new dimensions. 3952 sendViewSizeZoom(); 3953 } 3954 return changed; 3955 } 3956 3957 private static class PostScale implements Runnable { 3958 final WebView mWebView; 3959 final boolean mUpdateTextWrap; 3960 3961 public PostScale(WebView webView, boolean updateTextWrap) { 3962 mWebView = webView; 3963 mUpdateTextWrap = updateTextWrap; 3964 } 3965 3966 public void run() { 3967 if (mWebView.mWebViewCore != null) { 3968 // we always force, in case our height changed, in which case we 3969 // still want to send the notification over to webkit. 3970 mWebView.setNewZoomScale(mWebView.mActualScale, 3971 mUpdateTextWrap, true); 3972 } 3973 } 3974 } 3975 3976 @Override 3977 protected void onSizeChanged(int w, int h, int ow, int oh) { 3978 super.onSizeChanged(w, h, ow, oh); 3979 // Center zooming to the center of the screen. 3980 if (mZoomScale == 0) { // unless we're already zooming 3981 // To anchor at top left corner. 3982 mZoomCenterX = 0; 3983 mZoomCenterY = getVisibleTitleHeight(); 3984 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 3985 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 3986 } 3987 3988 // adjust the max viewport width depending on the view dimensions. This 3989 // is to ensure the scaling is not going insane. So do not shrink it if 3990 // the view size is temporarily smaller, e.g. when soft keyboard is up. 3991 int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE); 3992 if (newMaxViewportWidth > sMaxViewportWidth) { 3993 sMaxViewportWidth = newMaxViewportWidth; 3994 } 3995 3996 // update mMinZoomScale if the minimum zoom scale is not fixed 3997 if (!mMinZoomScaleFixed) { 3998 // when change from narrow screen to wide screen, the new viewWidth 3999 // can be wider than the old content width. We limit the minimum 4000 // scale to 1.0f. The proper minimum scale will be calculated when 4001 // the new picture shows up. 4002 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 4003 / (mDrawHistory ? mHistoryPicture.getWidth() 4004 : mZoomOverviewWidth)); 4005 if (mInitialScaleInPercent > 0) { 4006 // limit the minZoomScale to the initialScale if it is set 4007 float initialScale = mInitialScaleInPercent / 100.0f; 4008 if (mMinZoomScale > initialScale) { 4009 mMinZoomScale = initialScale; 4010 } 4011 } 4012 } 4013 4014 // onSizeChanged() is called during WebView layout. And any 4015 // requestLayout() is blocked during layout. As setNewZoomScale() will 4016 // call its child View to reposition itself through ViewManager's 4017 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 4018 // <b/> 4019 // only update the text wrap scale if width changed. 4020 post(new PostScale(this, w != ow)); 4021 } 4022 4023 @Override 4024 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4025 super.onScrollChanged(l, t, oldl, oldt); 4026 sendOurVisibleRect(); 4027 } 4028 4029 4030 @Override 4031 public boolean dispatchKeyEvent(KeyEvent event) { 4032 boolean dispatch = true; 4033 4034 if (!inEditingMode()) { 4035 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4036 mGotKeyDown = true; 4037 } else { 4038 if (!mGotKeyDown) { 4039 /* 4040 * We got a key up for which we were not the recipient of 4041 * the original key down. Don't give it to the view. 4042 */ 4043 dispatch = false; 4044 } 4045 mGotKeyDown = false; 4046 } 4047 } 4048 4049 if (dispatch) { 4050 return super.dispatchKeyEvent(event); 4051 } else { 4052 // We didn't dispatch, so let something else handle the key 4053 return false; 4054 } 4055 } 4056 4057 // Here are the snap align logic: 4058 // 1. If it starts nearly horizontally or vertically, snap align; 4059 // 2. If there is a dramitic direction change, let it go; 4060 // 3. If there is a same direction back and forth, lock it. 4061 4062 // adjustable parameters 4063 private int mMinLockSnapReverseDistance; 4064 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4065 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4066 4067 private static int sign(float x) { 4068 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4069 } 4070 4071 // if the page can scroll <= this value, we won't allow the drag tracker 4072 // to have any effect. 4073 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4074 4075 private class DragTrackerHandler { 4076 private final DragTracker mProxy; 4077 private final float mStartY, mStartX; 4078 private final float mMinDY, mMinDX; 4079 private final float mMaxDY, mMaxDX; 4080 private float mCurrStretchY, mCurrStretchX; 4081 private int mSX, mSY; 4082 private Interpolator mInterp; 4083 private float[] mXY = new float[2]; 4084 4085 // inner (non-state) classes can't have enums :( 4086 private static final int DRAGGING_STATE = 0; 4087 private static final int ANIMATING_STATE = 1; 4088 private static final int FINISHED_STATE = 2; 4089 private int mState; 4090 4091 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4092 mProxy = proxy; 4093 4094 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4095 int viewTop = getScrollY(); 4096 int viewBottom = viewTop + getHeight(); 4097 4098 mStartY = y; 4099 mMinDY = -viewTop; 4100 mMaxDY = docBottom - viewBottom; 4101 4102 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4103 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4104 " up/down= " + mMinDY + " " + mMaxDY); 4105 } 4106 4107 int docRight = computeHorizontalScrollRange(); 4108 int viewLeft = getScrollX(); 4109 int viewRight = viewLeft + getWidth(); 4110 mStartX = x; 4111 mMinDX = -viewLeft; 4112 mMaxDX = docRight - viewRight; 4113 4114 mState = DRAGGING_STATE; 4115 mProxy.onStartDrag(x, y); 4116 4117 // ensure we buildBitmap at least once 4118 mSX = -99999; 4119 } 4120 4121 private float computeStretch(float delta, float min, float max) { 4122 float stretch = 0; 4123 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4124 if (delta < min) { 4125 stretch = delta - min; 4126 } else if (delta > max) { 4127 stretch = delta - max; 4128 } 4129 } 4130 return stretch; 4131 } 4132 4133 public void dragTo(float x, float y) { 4134 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4135 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4136 4137 if ((mSnapScrollMode & SNAP_X) != 0) { 4138 sy = 0; 4139 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4140 sx = 0; 4141 } 4142 4143 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4144 mCurrStretchX = sx; 4145 mCurrStretchY = sy; 4146 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4147 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4148 " " + sy); 4149 } 4150 if (mProxy.onStretchChange(sx, sy)) { 4151 invalidate(); 4152 } 4153 } 4154 } 4155 4156 public void stopDrag() { 4157 final int DURATION = 200; 4158 int now = (int)SystemClock.uptimeMillis(); 4159 mInterp = new Interpolator(2); 4160 mXY[0] = mCurrStretchX; 4161 mXY[1] = mCurrStretchY; 4162 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4163 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4164 mInterp.setKeyFrame(0, now, mXY, blend); 4165 float[] zerozero = new float[] { 0, 0 }; 4166 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4167 mState = ANIMATING_STATE; 4168 4169 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4170 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4171 } 4172 } 4173 4174 // Call this after each draw. If it ruturns null, the tracker is done 4175 public boolean isFinished() { 4176 return mState == FINISHED_STATE; 4177 } 4178 4179 private int hiddenHeightOfTitleBar() { 4180 return getTitleHeight() - getVisibleTitleHeight(); 4181 } 4182 4183 // need a way to know if 565 or 8888 is the right config for 4184 // capturing the display and giving it to the drag proxy 4185 private Bitmap.Config offscreenBitmapConfig() { 4186 // hard code 565 for now 4187 return Bitmap.Config.RGB_565; 4188 } 4189 4190 /* If the tracker draws, then this returns true, otherwise it will 4191 return false, and draw nothing. 4192 */ 4193 public boolean draw(Canvas canvas) { 4194 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4195 int sx = getScrollX(); 4196 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4197 if (mSX != sx || mSY != sy) { 4198 buildBitmap(sx, sy); 4199 mSX = sx; 4200 mSY = sy; 4201 } 4202 4203 if (mState == ANIMATING_STATE) { 4204 Interpolator.Result result = mInterp.timeToValues(mXY); 4205 if (result == Interpolator.Result.FREEZE_END) { 4206 mState = FINISHED_STATE; 4207 return false; 4208 } else { 4209 mProxy.onStretchChange(mXY[0], mXY[1]); 4210 invalidate(); 4211 // fall through to the draw 4212 } 4213 } 4214 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4215 canvas.translate(sx, sy); 4216 mProxy.onDraw(canvas); 4217 canvas.restoreToCount(count); 4218 return true; 4219 } 4220 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4221 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4222 mCurrStretchX + " " + mCurrStretchY); 4223 } 4224 return false; 4225 } 4226 4227 private void buildBitmap(int sx, int sy) { 4228 int w = getWidth(); 4229 int h = getViewHeight(); 4230 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4231 Canvas canvas = new Canvas(bm); 4232 canvas.translate(-sx, -sy); 4233 drawContent(canvas); 4234 4235 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4236 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4237 " " + sy + " " + w + " " + h); 4238 } 4239 mProxy.onBitmapChange(bm); 4240 } 4241 } 4242 4243 /** @hide */ 4244 public static class DragTracker { 4245 public void onStartDrag(float x, float y) {} 4246 public boolean onStretchChange(float sx, float sy) { 4247 // return true to have us inval the view 4248 return false; 4249 } 4250 public void onStopDrag() {} 4251 public void onBitmapChange(Bitmap bm) {} 4252 public void onDraw(Canvas canvas) {} 4253 } 4254 4255 /** @hide */ 4256 public DragTracker getDragTracker() { 4257 return mDragTracker; 4258 } 4259 4260 /** @hide */ 4261 public void setDragTracker(DragTracker tracker) { 4262 mDragTracker = tracker; 4263 } 4264 4265 private DragTracker mDragTracker; 4266 private DragTrackerHandler mDragTrackerHandler; 4267 4268 private class ScaleDetectorListener implements 4269 ScaleGestureDetector.OnScaleGestureListener { 4270 4271 public boolean onScaleBegin(ScaleGestureDetector detector) { 4272 // cancel the single touch handling 4273 cancelTouch(); 4274 if (mZoomButtonsController.isVisible()) { 4275 mZoomButtonsController.setVisible(false); 4276 } 4277 // reset the zoom overview mode so that the page won't auto grow 4278 mInZoomOverview = false; 4279 // If it is in password mode, turn it off so it does not draw 4280 // misplaced. 4281 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4282 mWebTextView.setInPassword(false); 4283 } 4284 return true; 4285 } 4286 4287 public void onScaleEnd(ScaleGestureDetector detector) { 4288 if (mPreviewZoomOnly) { 4289 mPreviewZoomOnly = false; 4290 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4291 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4292 // don't reflow when zoom in; when zoom out, do reflow if the 4293 // new scale is almost minimum scale; 4294 boolean reflowNow = (mActualScale - mMinZoomScale <= 0.01f) 4295 || ((mActualScale <= 0.8 * mTextWrapScale)); 4296 // force zoom after mPreviewZoomOnly is set to false so that the 4297 // new view size will be passed to the WebKit 4298 setNewZoomScale(mActualScale, reflowNow, true); 4299 // call invalidate() to draw without zoom filter 4300 invalidate(); 4301 } 4302 // adjust the edit text view if needed 4303 if (inEditingMode() && didUpdateTextViewBounds(false) 4304 && nativeFocusCandidateIsPassword()) { 4305 // If it is a password field, start drawing the 4306 // WebTextView once again. 4307 mWebTextView.setInPassword(true); 4308 } 4309 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4310 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4311 // may trigger the unwanted fling. 4312 mTouchMode = TOUCH_PINCH_DRAG; 4313 startTouch(detector.getFocusX(), detector.getFocusY(), 4314 mLastTouchTime); 4315 } 4316 4317 public boolean onScale(ScaleGestureDetector detector) { 4318 float scale = (float) (Math.round(detector.getScaleFactor() 4319 * mActualScale * 100) / 100.0); 4320 if (Math.abs(scale - mActualScale) >= PREVIEW_SCALE_INCREMENT) { 4321 mPreviewZoomOnly = true; 4322 // limit the scale change per step 4323 if (scale > mActualScale) { 4324 scale = Math.min(scale, mActualScale * 1.25f); 4325 } else { 4326 scale = Math.max(scale, mActualScale * 0.8f); 4327 } 4328 mZoomCenterX = detector.getFocusX(); 4329 mZoomCenterY = detector.getFocusY(); 4330 setNewZoomScale(scale, false, false); 4331 invalidate(); 4332 return true; 4333 } 4334 return false; 4335 } 4336 } 4337 4338 @Override 4339 public boolean onTouchEvent(MotionEvent ev) { 4340 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4341 return false; 4342 } 4343 4344 if (DebugFlags.WEB_VIEW) { 4345 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4346 + mTouchMode); 4347 } 4348 4349 int action; 4350 float x, y; 4351 long eventTime = ev.getEventTime(); 4352 4353 // FIXME: we may consider to give WebKit an option to handle multi-touch 4354 // events later. 4355 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 4356 if (mMinZoomScale < mMaxZoomScale) { 4357 mScaleDetector.onTouchEvent(ev); 4358 if (mScaleDetector.isInProgress()) { 4359 mLastTouchTime = eventTime; 4360 return true; 4361 } 4362 x = mScaleDetector.getFocusX(); 4363 y = mScaleDetector.getFocusY(); 4364 action = ev.getAction() & MotionEvent.ACTION_MASK; 4365 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4366 cancelTouch(); 4367 action = MotionEvent.ACTION_DOWN; 4368 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4369 // set mLastTouchX/Y to the remaining point 4370 mLastTouchX = x; 4371 mLastTouchY = y; 4372 } else if (action == MotionEvent.ACTION_MOVE) { 4373 // negative x or y indicate it is on the edge, skip it. 4374 if (x < 0 || y < 0) { 4375 return true; 4376 } 4377 } 4378 } else { 4379 // if the page disallow zoom, skip multi-pointer action 4380 return true; 4381 } 4382 } else { 4383 action = ev.getAction(); 4384 x = ev.getX(); 4385 y = ev.getY(); 4386 } 4387 4388 // Due to the touch screen edge effect, a touch closer to the edge 4389 // always snapped to the edge. As getViewWidth() can be different from 4390 // getWidth() due to the scrollbar, adjusting the point to match 4391 // getViewWidth(). Same applied to the height. 4392 if (x > getViewWidth() - 1) { 4393 x = getViewWidth() - 1; 4394 } 4395 if (y > getViewHeightWithTitle() - 1) { 4396 y = getViewHeightWithTitle() - 1; 4397 } 4398 4399 // pass the touch events from UI thread to WebCore thread 4400 if (mForwardTouchEvents && (action != MotionEvent.ACTION_MOVE 4401 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 4402 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 4403 ted.mAction = action; 4404 ted.mX = viewToContentX((int) x + mScrollX); 4405 ted.mY = viewToContentY((int) y + mScrollY); 4406 ted.mEventTime = eventTime; 4407 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4408 mLastSentTouchTime = eventTime; 4409 } 4410 4411 float fDeltaX = mLastTouchX - x; 4412 float fDeltaY = mLastTouchY - y; 4413 int deltaX = (int) fDeltaX; 4414 int deltaY = (int) fDeltaY; 4415 4416 switch (action) { 4417 case MotionEvent.ACTION_DOWN: { 4418 mPreventDrag = PREVENT_DRAG_NO; 4419 if (!mScroller.isFinished()) { 4420 // stop the current scroll animation, but if this is 4421 // the start of a fling, allow it to add to the current 4422 // fling's velocity 4423 mScroller.abortAnimation(); 4424 mTouchMode = TOUCH_DRAG_START_MODE; 4425 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 4426 } else if (mShiftIsPressed) { 4427 mSelectX = mScrollX + (int) x; 4428 mSelectY = mScrollY + (int) y; 4429 mTouchMode = TOUCH_SELECT_MODE; 4430 if (DebugFlags.WEB_VIEW) { 4431 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 4432 } 4433 nativeMoveSelection(viewToContentX(mSelectX), 4434 viewToContentY(mSelectY), false); 4435 mTouchSelection = mExtendSelection = true; 4436 invalidate(); // draw the i-beam instead of the arrow 4437 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4438 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4439 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4440 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4441 } else { 4442 // commit the short press action for the previous tap 4443 doShortPress(); 4444 // continue, mTouchMode should be still TOUCH_INIT_MODE 4445 } 4446 } else { 4447 mPreviewZoomOnly = false; 4448 mTouchMode = TOUCH_INIT_MODE; 4449 mPreventDrag = mForwardTouchEvents ? PREVENT_DRAG_MAYBE_YES 4450 : PREVENT_DRAG_NO; 4451 mPreventLongPress = false; 4452 mPreventDoubleTap = false; 4453 mWebViewCore.sendMessage( 4454 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4455 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4456 EventLog.writeEvent(EVENT_LOG_DOUBLE_TAP_DURATION, 4457 (eventTime - mLastTouchUpTime), eventTime); 4458 } 4459 } 4460 // Trigger the link 4461 if (mTouchMode == TOUCH_INIT_MODE 4462 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4463 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4464 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 4465 } 4466 startTouch(x, y, eventTime); 4467 break; 4468 } 4469 case MotionEvent.ACTION_MOVE: { 4470 if (mTouchMode == TOUCH_DONE_MODE) { 4471 // no dragging during scroll zoom animation 4472 break; 4473 } 4474 mVelocityTracker.addMovement(ev); 4475 4476 if (mTouchMode != TOUCH_DRAG_MODE) { 4477 if (mTouchMode == TOUCH_SELECT_MODE) { 4478 mSelectX = mScrollX + (int) x; 4479 mSelectY = mScrollY + (int) y; 4480 if (DebugFlags.WEB_VIEW) { 4481 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 4482 } 4483 nativeMoveSelection(viewToContentX(mSelectX), 4484 viewToContentY(mSelectY), true); 4485 invalidate(); 4486 break; 4487 } 4488 if ((deltaX * deltaX + deltaY * deltaY) < mTouchSlopSquare) { 4489 break; 4490 } 4491 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 4492 // track mLastTouchTime as we may need to do fling at 4493 // ACTION_UP 4494 mLastTouchTime = eventTime; 4495 break; 4496 } 4497 if (mTouchMode == TOUCH_SHORTPRESS_MODE 4498 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4499 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4500 } else if (mTouchMode == TOUCH_INIT_MODE 4501 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4502 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4503 } 4504 if (mFullScreenHolder != null) { 4505 // in full screen mode, the WebView can't be panned. 4506 mTouchMode = TOUCH_DONE_MODE; 4507 break; 4508 } 4509 4510 // if it starts nearly horizontal or vertical, enforce it 4511 int ax = Math.abs(deltaX); 4512 int ay = Math.abs(deltaY); 4513 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4514 mSnapScrollMode = SNAP_X; 4515 mSnapPositive = deltaX > 0; 4516 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4517 mSnapScrollMode = SNAP_Y; 4518 mSnapPositive = deltaY > 0; 4519 } 4520 4521 mTouchMode = TOUCH_DRAG_MODE; 4522 mLastTouchX = x; 4523 mLastTouchY = y; 4524 fDeltaX = 0.0f; 4525 fDeltaY = 0.0f; 4526 deltaX = 0; 4527 deltaY = 0; 4528 4529 WebViewCore.reducePriority(); 4530 if (!mDragFromTextInput) { 4531 nativeHideCursor(); 4532 } 4533 WebSettings settings = getSettings(); 4534 if (settings.supportZoom() 4535 && settings.getBuiltInZoomControls() 4536 && !mZoomButtonsController.isVisible() 4537 && mMinZoomScale < mMaxZoomScale) { 4538 mZoomButtonsController.setVisible(true); 4539 int count = settings.getDoubleTapToastCount(); 4540 if (mInZoomOverview && count > 0) { 4541 settings.setDoubleTapToastCount(--count); 4542 Toast.makeText(mContext, 4543 com.android.internal.R.string.double_tap_toast, 4544 Toast.LENGTH_LONG).show(); 4545 } 4546 } 4547 } 4548 4549 // do pan 4550 int newScrollX = pinLocX(mScrollX + deltaX); 4551 int newDeltaX = newScrollX - mScrollX; 4552 if (deltaX != newDeltaX) { 4553 deltaX = newDeltaX; 4554 fDeltaX = (float) newDeltaX; 4555 } 4556 int newScrollY = pinLocY(mScrollY + deltaY); 4557 int newDeltaY = newScrollY - mScrollY; 4558 if (deltaY != newDeltaY) { 4559 deltaY = newDeltaY; 4560 fDeltaY = (float) newDeltaY; 4561 } 4562 boolean done = false; 4563 boolean keepScrollBarsVisible = false; 4564 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 4565 keepScrollBarsVisible = done = true; 4566 } else { 4567 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4568 int ax = Math.abs(deltaX); 4569 int ay = Math.abs(deltaY); 4570 if (mSnapScrollMode == SNAP_X) { 4571 // radical change means getting out of snap mode 4572 if (ay > MAX_SLOPE_FOR_DIAG * ax 4573 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4574 mSnapScrollMode = SNAP_NONE; 4575 } 4576 // reverse direction means lock in the snap mode 4577 if (ax > MAX_SLOPE_FOR_DIAG * ay && 4578 (mSnapPositive 4579 ? deltaX < -mMinLockSnapReverseDistance 4580 : deltaX > mMinLockSnapReverseDistance)) { 4581 mSnapScrollMode |= SNAP_LOCK; 4582 } 4583 } else { 4584 // radical change means getting out of snap mode 4585 if (ax > MAX_SLOPE_FOR_DIAG * ay 4586 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4587 mSnapScrollMode = SNAP_NONE; 4588 } 4589 // reverse direction means lock in the snap mode 4590 if (ay > MAX_SLOPE_FOR_DIAG * ax && 4591 (mSnapPositive 4592 ? deltaY < -mMinLockSnapReverseDistance 4593 : deltaY > mMinLockSnapReverseDistance)) { 4594 mSnapScrollMode |= SNAP_LOCK; 4595 } 4596 } 4597 } 4598 if (mSnapScrollMode != SNAP_NONE) { 4599 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 4600 deltaY = 0; 4601 } else { 4602 deltaX = 0; 4603 } 4604 } 4605 if ((deltaX | deltaY) != 0) { 4606 scrollBy(deltaX, deltaY); 4607 if (deltaX != 0) { 4608 mLastTouchX = x; 4609 } 4610 if (deltaY != 0) { 4611 mLastTouchY = y; 4612 } 4613 mHeldMotionless = MOTIONLESS_FALSE; 4614 } else { 4615 // keep the scrollbar on the screen even there is no 4616 // scroll 4617 keepScrollBarsVisible = true; 4618 } 4619 mLastTouchTime = eventTime; 4620 mUserScroll = true; 4621 } 4622 4623 if (!getSettings().getBuiltInZoomControls()) { 4624 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 4625 if (mZoomControls != null && showPlusMinus) { 4626 if (mZoomControls.getVisibility() == View.VISIBLE) { 4627 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4628 } else { 4629 mZoomControls.show(showPlusMinus, false); 4630 } 4631 mPrivateHandler.postDelayed(mZoomControlRunnable, 4632 ZOOM_CONTROLS_TIMEOUT); 4633 } 4634 } 4635 4636 if (mDragTrackerHandler != null) { 4637 mDragTrackerHandler.dragTo(x, y); 4638 } 4639 4640 if (keepScrollBarsVisible) { 4641 if (mHeldMotionless != MOTIONLESS_TRUE) { 4642 mHeldMotionless = MOTIONLESS_TRUE; 4643 invalidate(); 4644 } 4645 // keep the scrollbar on the screen even there is no scroll 4646 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 4647 false); 4648 // return false to indicate that we can't pan out of the 4649 // view space 4650 return !done; 4651 } 4652 break; 4653 } 4654 case MotionEvent.ACTION_UP: { 4655 if (mDragTrackerHandler != null) { 4656 mDragTrackerHandler.stopDrag(); 4657 } 4658 mLastTouchUpTime = eventTime; 4659 switch (mTouchMode) { 4660 case TOUCH_DOUBLE_TAP_MODE: // double tap 4661 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4662 mTouchMode = TOUCH_DONE_MODE; 4663 if (mPreventDoubleTap) { 4664 WebViewCore.TouchEventData ted 4665 = new WebViewCore.TouchEventData(); 4666 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 4667 ted.mX = viewToContentX((int) x + mScrollX); 4668 ted.mY = viewToContentY((int) y + mScrollY); 4669 ted.mEventTime = eventTime; 4670 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4671 } else if (mFullScreenHolder == null) { 4672 doDoubleTap(); 4673 } 4674 break; 4675 case TOUCH_SELECT_MODE: 4676 commitCopy(); 4677 mTouchSelection = false; 4678 break; 4679 case TOUCH_INIT_MODE: // tap 4680 case TOUCH_SHORTPRESS_START_MODE: 4681 case TOUCH_SHORTPRESS_MODE: 4682 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4683 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4684 if ((deltaX * deltaX + deltaY * deltaY) > mTouchSlopSquare) { 4685 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 4686 " WebCore's response for touch down."); 4687 if (mFullScreenHolder == null 4688 && (computeHorizontalScrollExtent() < computeHorizontalScrollRange() 4689 || computeVerticalScrollExtent() < computeVerticalScrollRange())) { 4690 // we will not rewrite drag code here, but we 4691 // will try fling if it applies. 4692 WebViewCore.reducePriority(); 4693 // fall through to TOUCH_DRAG_MODE 4694 } else { 4695 break; 4696 } 4697 } else { 4698 // mPreventDrag can be PREVENT_DRAG_MAYBE_YES in 4699 // TOUCH_INIT_MODE. To give WebCoreThread a little 4700 // more time to send PREVENT_TOUCH_ID, we check 4701 // again in responding RELEASE_SINGLE_TAP. 4702 if (mPreventDrag != PREVENT_DRAG_YES) { 4703 if (mTouchMode == TOUCH_INIT_MODE) { 4704 mPrivateHandler.sendMessageDelayed( 4705 mPrivateHandler.obtainMessage( 4706 RELEASE_SINGLE_TAP), 4707 ViewConfiguration.getDoubleTapTimeout()); 4708 } else { 4709 mTouchMode = TOUCH_DONE_MODE; 4710 doShortPress(); 4711 } 4712 } 4713 break; 4714 } 4715 case TOUCH_DRAG_MODE: 4716 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4717 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4718 mHeldMotionless = MOTIONLESS_TRUE; 4719 // redraw in high-quality, as we're done dragging 4720 invalidate(); 4721 // if the user waits a while w/o moving before the 4722 // up, we don't want to do a fling 4723 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4724 mVelocityTracker.addMovement(ev); 4725 doFling(); 4726 break; 4727 } 4728 mLastVelocity = 0; 4729 WebViewCore.resumePriority(); 4730 break; 4731 case TOUCH_DRAG_START_MODE: 4732 case TOUCH_DONE_MODE: 4733 // do nothing 4734 break; 4735 } 4736 // we also use mVelocityTracker == null to tell us that we are 4737 // not "moving around", so we can take the slower/prettier 4738 // mode in the drawing code 4739 if (mVelocityTracker != null) { 4740 mVelocityTracker.recycle(); 4741 mVelocityTracker = null; 4742 } 4743 break; 4744 } 4745 case MotionEvent.ACTION_CANCEL: { 4746 cancelTouch(); 4747 break; 4748 } 4749 } 4750 return true; 4751 } 4752 4753 private void startTouch(float x, float y, long eventTime) { 4754 // Remember where the motion event started 4755 mLastTouchX = x; 4756 mLastTouchY = y; 4757 mLastTouchTime = eventTime; 4758 mVelocityTracker = VelocityTracker.obtain(); 4759 mSnapScrollMode = SNAP_NONE; 4760 if (mDragTracker != null) { 4761 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 4762 } 4763 } 4764 4765 private void cancelTouch() { 4766 if (mDragTrackerHandler != null) { 4767 mDragTrackerHandler.stopDrag(); 4768 } 4769 // we also use mVelocityTracker == null to tell us that we are 4770 // not "moving around", so we can take the slower/prettier 4771 // mode in the drawing code 4772 if (mVelocityTracker != null) { 4773 mVelocityTracker.recycle(); 4774 mVelocityTracker = null; 4775 } 4776 if (mTouchMode == TOUCH_DRAG_MODE) { 4777 WebViewCore.resumePriority(); 4778 } 4779 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4780 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4781 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4782 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4783 mHeldMotionless = MOTIONLESS_TRUE; 4784 mTouchMode = TOUCH_DONE_MODE; 4785 nativeHideCursor(); 4786 } 4787 4788 private long mTrackballFirstTime = 0; 4789 private long mTrackballLastTime = 0; 4790 private float mTrackballRemainsX = 0.0f; 4791 private float mTrackballRemainsY = 0.0f; 4792 private int mTrackballXMove = 0; 4793 private int mTrackballYMove = 0; 4794 private boolean mExtendSelection = false; 4795 private boolean mTouchSelection = false; 4796 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4797 private static final int TRACKBALL_TIMEOUT = 200; 4798 private static final int TRACKBALL_WAIT = 100; 4799 private static final int TRACKBALL_SCALE = 400; 4800 private static final int TRACKBALL_SCROLL_COUNT = 5; 4801 private static final int TRACKBALL_MOVE_COUNT = 10; 4802 private static final int TRACKBALL_MULTIPLIER = 3; 4803 private static final int SELECT_CURSOR_OFFSET = 16; 4804 private int mSelectX = 0; 4805 private int mSelectY = 0; 4806 private boolean mFocusSizeChanged = false; 4807 private boolean mShiftIsPressed = false; 4808 private boolean mTrackballDown = false; 4809 private long mTrackballUpTime = 0; 4810 private long mLastCursorTime = 0; 4811 private Rect mLastCursorBounds; 4812 4813 // Set by default; BrowserActivity clears to interpret trackball data 4814 // directly for movement. Currently, the framework only passes 4815 // arrow key events, not trackball events, from one child to the next 4816 private boolean mMapTrackballToArrowKeys = true; 4817 4818 public void setMapTrackballToArrowKeys(boolean setMap) { 4819 mMapTrackballToArrowKeys = setMap; 4820 } 4821 4822 void resetTrackballTime() { 4823 mTrackballLastTime = 0; 4824 } 4825 4826 @Override 4827 public boolean onTrackballEvent(MotionEvent ev) { 4828 long time = ev.getEventTime(); 4829 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4830 if (ev.getY() > 0) pageDown(true); 4831 if (ev.getY() < 0) pageUp(true); 4832 return true; 4833 } 4834 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4835 if (mShiftIsPressed) { 4836 return true; // discard press if copy in progress 4837 } 4838 mTrackballDown = true; 4839 if (mNativeClass == 0) { 4840 return false; 4841 } 4842 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4843 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4844 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4845 nativeSelectBestAt(mLastCursorBounds); 4846 } 4847 if (DebugFlags.WEB_VIEW) { 4848 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4849 + " time=" + time 4850 + " mLastCursorTime=" + mLastCursorTime); 4851 } 4852 if (isInTouchMode()) requestFocusFromTouch(); 4853 return false; // let common code in onKeyDown at it 4854 } 4855 if (ev.getAction() == MotionEvent.ACTION_UP) { 4856 // LONG_PRESS_CENTER is set in common onKeyDown 4857 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4858 mTrackballDown = false; 4859 mTrackballUpTime = time; 4860 if (mShiftIsPressed) { 4861 if (mExtendSelection) { 4862 commitCopy(); 4863 } else { 4864 mExtendSelection = true; 4865 invalidate(); // draw the i-beam instead of the arrow 4866 } 4867 return true; // discard press if copy in progress 4868 } 4869 if (DebugFlags.WEB_VIEW) { 4870 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4871 + " time=" + time 4872 ); 4873 } 4874 return false; // let common code in onKeyUp at it 4875 } 4876 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4877 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4878 return false; 4879 } 4880 if (mTrackballDown) { 4881 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4882 return true; // discard move if trackball is down 4883 } 4884 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4885 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4886 return true; 4887 } 4888 // TODO: alternatively we can do panning as touch does 4889 switchOutDrawHistory(); 4890 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4891 if (DebugFlags.WEB_VIEW) { 4892 Log.v(LOGTAG, "onTrackballEvent time=" 4893 + time + " last=" + mTrackballLastTime); 4894 } 4895 mTrackballFirstTime = time; 4896 mTrackballXMove = mTrackballYMove = 0; 4897 } 4898 mTrackballLastTime = time; 4899 if (DebugFlags.WEB_VIEW) { 4900 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4901 } 4902 mTrackballRemainsX += ev.getX(); 4903 mTrackballRemainsY += ev.getY(); 4904 doTrackball(time); 4905 return true; 4906 } 4907 4908 void moveSelection(float xRate, float yRate) { 4909 if (mNativeClass == 0) 4910 return; 4911 int width = getViewWidth(); 4912 int height = getViewHeight(); 4913 mSelectX += xRate; 4914 mSelectY += yRate; 4915 int maxX = width + mScrollX; 4916 int maxY = height + mScrollY; 4917 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 4918 , mSelectX)); 4919 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 4920 , mSelectY)); 4921 if (DebugFlags.WEB_VIEW) { 4922 Log.v(LOGTAG, "moveSelection" 4923 + " mSelectX=" + mSelectX 4924 + " mSelectY=" + mSelectY 4925 + " mScrollX=" + mScrollX 4926 + " mScrollY=" + mScrollY 4927 + " xRate=" + xRate 4928 + " yRate=" + yRate 4929 ); 4930 } 4931 nativeMoveSelection(viewToContentX(mSelectX), 4932 viewToContentY(mSelectY), mExtendSelection); 4933 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 4934 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4935 : 0; 4936 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 4937 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4938 : 0; 4939 pinScrollBy(scrollX, scrollY, true, 0); 4940 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 4941 requestRectangleOnScreen(select); 4942 invalidate(); 4943 } 4944 4945 private int scaleTrackballX(float xRate, int width) { 4946 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4947 int nextXMove = xMove; 4948 if (xMove > 0) { 4949 if (xMove > mTrackballXMove) { 4950 xMove -= mTrackballXMove; 4951 } 4952 } else if (xMove < mTrackballXMove) { 4953 xMove -= mTrackballXMove; 4954 } 4955 mTrackballXMove = nextXMove; 4956 return xMove; 4957 } 4958 4959 private int scaleTrackballY(float yRate, int height) { 4960 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 4961 int nextYMove = yMove; 4962 if (yMove > 0) { 4963 if (yMove > mTrackballYMove) { 4964 yMove -= mTrackballYMove; 4965 } 4966 } else if (yMove < mTrackballYMove) { 4967 yMove -= mTrackballYMove; 4968 } 4969 mTrackballYMove = nextYMove; 4970 return yMove; 4971 } 4972 4973 private int keyCodeToSoundsEffect(int keyCode) { 4974 switch(keyCode) { 4975 case KeyEvent.KEYCODE_DPAD_UP: 4976 return SoundEffectConstants.NAVIGATION_UP; 4977 case KeyEvent.KEYCODE_DPAD_RIGHT: 4978 return SoundEffectConstants.NAVIGATION_RIGHT; 4979 case KeyEvent.KEYCODE_DPAD_DOWN: 4980 return SoundEffectConstants.NAVIGATION_DOWN; 4981 case KeyEvent.KEYCODE_DPAD_LEFT: 4982 return SoundEffectConstants.NAVIGATION_LEFT; 4983 } 4984 throw new IllegalArgumentException("keyCode must be one of " + 4985 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 4986 "KEYCODE_DPAD_LEFT}."); 4987 } 4988 4989 private void doTrackball(long time) { 4990 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 4991 if (elapsed == 0) { 4992 elapsed = TRACKBALL_TIMEOUT; 4993 } 4994 float xRate = mTrackballRemainsX * 1000 / elapsed; 4995 float yRate = mTrackballRemainsY * 1000 / elapsed; 4996 int viewWidth = getViewWidth(); 4997 int viewHeight = getViewHeight(); 4998 if (mShiftIsPressed) { 4999 moveSelection(scaleTrackballX(xRate, viewWidth), 5000 scaleTrackballY(yRate, viewHeight)); 5001 mTrackballRemainsX = mTrackballRemainsY = 0; 5002 return; 5003 } 5004 float ax = Math.abs(xRate); 5005 float ay = Math.abs(yRate); 5006 float maxA = Math.max(ax, ay); 5007 if (DebugFlags.WEB_VIEW) { 5008 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5009 + " xRate=" + xRate 5010 + " yRate=" + yRate 5011 + " mTrackballRemainsX=" + mTrackballRemainsX 5012 + " mTrackballRemainsY=" + mTrackballRemainsY); 5013 } 5014 int width = mContentWidth - viewWidth; 5015 int height = mContentHeight - viewHeight; 5016 if (width < 0) width = 0; 5017 if (height < 0) height = 0; 5018 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5019 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5020 maxA = Math.max(ax, ay); 5021 int count = Math.max(0, (int) maxA); 5022 int oldScrollX = mScrollX; 5023 int oldScrollY = mScrollY; 5024 if (count > 0) { 5025 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5026 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5027 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5028 KeyEvent.KEYCODE_DPAD_RIGHT; 5029 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5030 if (DebugFlags.WEB_VIEW) { 5031 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5032 + " count=" + count 5033 + " mTrackballRemainsX=" + mTrackballRemainsX 5034 + " mTrackballRemainsY=" + mTrackballRemainsY); 5035 } 5036 if (navHandledKey(selectKeyCode, count, false, time, false)) { 5037 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5038 } 5039 mTrackballRemainsX = mTrackballRemainsY = 0; 5040 } 5041 if (count >= TRACKBALL_SCROLL_COUNT) { 5042 int xMove = scaleTrackballX(xRate, width); 5043 int yMove = scaleTrackballY(yRate, height); 5044 if (DebugFlags.WEB_VIEW) { 5045 Log.v(LOGTAG, "doTrackball pinScrollBy" 5046 + " count=" + count 5047 + " xMove=" + xMove + " yMove=" + yMove 5048 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5049 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5050 ); 5051 } 5052 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5053 xMove = 0; 5054 } 5055 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5056 yMove = 0; 5057 } 5058 if (xMove != 0 || yMove != 0) { 5059 pinScrollBy(xMove, yMove, true, 0); 5060 } 5061 mUserScroll = true; 5062 } 5063 } 5064 5065 private int computeMaxScrollY() { 5066 int maxContentH = computeVerticalScrollRange() + getTitleHeight(); 5067 return Math.max(maxContentH - getViewHeightWithTitle(), getTitleHeight()); 5068 } 5069 5070 public void flingScroll(int vx, int vy) { 5071 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5072 int maxY = computeMaxScrollY(); 5073 5074 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 5075 invalidate(); 5076 } 5077 5078 private void doFling() { 5079 if (mVelocityTracker == null) { 5080 return; 5081 } 5082 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5083 int maxY = computeMaxScrollY(); 5084 5085 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5086 int vx = (int) mVelocityTracker.getXVelocity(); 5087 int vy = (int) mVelocityTracker.getYVelocity(); 5088 5089 if (mSnapScrollMode != SNAP_NONE) { 5090 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5091 vy = 0; 5092 } else { 5093 vx = 0; 5094 } 5095 } 5096 5097 if (true /* EMG release: make our fling more like Maps' */) { 5098 // maps cuts their velocity in half 5099 vx = vx * 3 / 4; 5100 vy = vy * 3 / 4; 5101 } 5102 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5103 WebViewCore.resumePriority(); 5104 return; 5105 } 5106 float currentVelocity = mScroller.getCurrVelocity(); 5107 if (mLastVelocity > 0 && currentVelocity > 0) { 5108 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5109 - Math.atan2(vy, vx))); 5110 final float circle = (float) (Math.PI) * 2.0f; 5111 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5112 vx += currentVelocity * mLastVelX / mLastVelocity; 5113 vy += currentVelocity * mLastVelY / mLastVelocity; 5114 if (DebugFlags.WEB_VIEW) { 5115 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5116 } 5117 } else if (DebugFlags.WEB_VIEW) { 5118 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5119 } 5120 } else if (DebugFlags.WEB_VIEW) { 5121 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5122 + " current=" + currentVelocity 5123 + " vx=" + vx + " vy=" + vy 5124 + " maxX=" + maxX + " maxY=" + maxY 5125 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5126 } 5127 mLastVelX = vx; 5128 mLastVelY = vy; 5129 mLastVelocity = (float) Math.hypot(vx, vy); 5130 5131 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 5132 // TODO: duration is calculated based on velocity, if the range is 5133 // small, the animation will stop before duration is up. We may 5134 // want to calculate how long the animation is going to run to precisely 5135 // resume the webcore update. 5136 final int time = mScroller.getDuration(); 5137 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5138 awakenScrollBars(time); 5139 invalidate(); 5140 } 5141 5142 private boolean zoomWithPreview(float scale) { 5143 float oldScale = mActualScale; 5144 mInitialScrollX = mScrollX; 5145 mInitialScrollY = mScrollY; 5146 5147 // snap to DEFAULT_SCALE if it is close 5148 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 5149 scale = mDefaultScale; 5150 } 5151 5152 setNewZoomScale(scale, true, false); 5153 5154 if (oldScale != mActualScale) { 5155 // use mZoomPickerScale to see zoom preview first 5156 mZoomStart = SystemClock.uptimeMillis(); 5157 mInvInitialZoomScale = 1.0f / oldScale; 5158 mInvFinalZoomScale = 1.0f / mActualScale; 5159 mZoomScale = mActualScale; 5160 WebViewCore.pauseUpdatePicture(mWebViewCore); 5161 invalidate(); 5162 return true; 5163 } else { 5164 return false; 5165 } 5166 } 5167 5168 /** 5169 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5170 * in charge of installing this view to the view hierarchy. This view will 5171 * become visible when the user starts scrolling via touch and fade away if 5172 * the user does not interact with it. 5173 * <p/> 5174 * API version 3 introduces a built-in zoom mechanism that is shown 5175 * automatically by the MapView. This is the preferred approach for 5176 * showing the zoom UI. 5177 * 5178 * @deprecated The built-in zoom mechanism is preferred, see 5179 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5180 */ 5181 @Deprecated 5182 public View getZoomControls() { 5183 if (!getSettings().supportZoom()) { 5184 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5185 return null; 5186 } 5187 if (mZoomControls == null) { 5188 mZoomControls = createZoomControls(); 5189 5190 /* 5191 * need to be set to VISIBLE first so that getMeasuredHeight() in 5192 * {@link #onSizeChanged()} can return the measured value for proper 5193 * layout. 5194 */ 5195 mZoomControls.setVisibility(View.VISIBLE); 5196 mZoomControlRunnable = new Runnable() { 5197 public void run() { 5198 5199 /* Don't dismiss the controls if the user has 5200 * focus on them. Wait and check again later. 5201 */ 5202 if (!mZoomControls.hasFocus()) { 5203 mZoomControls.hide(); 5204 } else { 5205 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5206 mPrivateHandler.postDelayed(mZoomControlRunnable, 5207 ZOOM_CONTROLS_TIMEOUT); 5208 } 5209 } 5210 }; 5211 } 5212 return mZoomControls; 5213 } 5214 5215 private ExtendedZoomControls createZoomControls() { 5216 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 5217 , null); 5218 zoomControls.setOnZoomInClickListener(new OnClickListener() { 5219 public void onClick(View v) { 5220 // reset time out 5221 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5222 mPrivateHandler.postDelayed(mZoomControlRunnable, 5223 ZOOM_CONTROLS_TIMEOUT); 5224 zoomIn(); 5225 } 5226 }); 5227 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 5228 public void onClick(View v) { 5229 // reset time out 5230 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5231 mPrivateHandler.postDelayed(mZoomControlRunnable, 5232 ZOOM_CONTROLS_TIMEOUT); 5233 zoomOut(); 5234 } 5235 }); 5236 return zoomControls; 5237 } 5238 5239 /** 5240 * Gets the {@link ZoomButtonsController} which can be used to add 5241 * additional buttons to the zoom controls window. 5242 * 5243 * @return The instance of {@link ZoomButtonsController} used by this class, 5244 * or null if it is unavailable. 5245 * @hide 5246 */ 5247 public ZoomButtonsController getZoomButtonsController() { 5248 return mZoomButtonsController; 5249 } 5250 5251 /** 5252 * Perform zoom in in the webview 5253 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 5254 */ 5255 public boolean zoomIn() { 5256 // TODO: alternatively we can disallow this during draw history mode 5257 switchOutDrawHistory(); 5258 mInZoomOverview = false; 5259 // Center zooming to the center of the screen. 5260 mZoomCenterX = getViewWidth() * .5f; 5261 mZoomCenterY = getViewHeight() * .5f; 5262 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5263 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5264 return zoomWithPreview(mActualScale * 1.25f); 5265 } 5266 5267 /** 5268 * Perform zoom out in the webview 5269 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 5270 */ 5271 public boolean zoomOut() { 5272 // TODO: alternatively we can disallow this during draw history mode 5273 switchOutDrawHistory(); 5274 // Center zooming to the center of the screen. 5275 mZoomCenterX = getViewWidth() * .5f; 5276 mZoomCenterY = getViewHeight() * .5f; 5277 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5278 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5279 return zoomWithPreview(mActualScale * 0.8f); 5280 } 5281 5282 private void updateSelection() { 5283 if (mNativeClass == 0) { 5284 return; 5285 } 5286 // mLastTouchX and mLastTouchY are the point in the current viewport 5287 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5288 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5289 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 5290 contentX + mNavSlop, contentY + mNavSlop); 5291 nativeSelectBestAt(rect); 5292 } 5293 5294 /** 5295 * Scroll the focused text field/area to match the WebTextView 5296 * @param xPercent New x position of the WebTextView from 0 to 1. 5297 * @param y New y position of the WebTextView in view coordinates 5298 */ 5299 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 5300 if (!inEditingMode() || mWebViewCore == null) { 5301 return; 5302 } 5303 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 5304 // Since this position is relative to the top of the text input 5305 // field, we do not need to take the title bar's height into 5306 // consideration. 5307 viewToContentDimension(y), 5308 new Float(xPercent)); 5309 } 5310 5311 /** 5312 * Set our starting point and time for a drag from the WebTextView. 5313 */ 5314 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 5315 if (!inEditingMode()) { 5316 return; 5317 } 5318 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 5319 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 5320 mLastTouchTime = eventTime; 5321 if (!mScroller.isFinished()) { 5322 abortAnimation(); 5323 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5324 } 5325 mSnapScrollMode = SNAP_NONE; 5326 mVelocityTracker = VelocityTracker.obtain(); 5327 mTouchMode = TOUCH_DRAG_START_MODE; 5328 } 5329 5330 /** 5331 * Given a motion event from the WebTextView, set its location to our 5332 * coordinates, and handle the event. 5333 */ 5334 /*package*/ boolean textFieldDrag(MotionEvent event) { 5335 if (!inEditingMode()) { 5336 return false; 5337 } 5338 mDragFromTextInput = true; 5339 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 5340 (float) (mWebTextView.getTop() - mScrollY)); 5341 boolean result = onTouchEvent(event); 5342 mDragFromTextInput = false; 5343 return result; 5344 } 5345 5346 /** 5347 * Due a touch up from a WebTextView. This will be handled by webkit to 5348 * change the selection. 5349 * @param event MotionEvent in the WebTextView's coordinates. 5350 */ 5351 /*package*/ void touchUpOnTextField(MotionEvent event) { 5352 if (!inEditingMode()) { 5353 return; 5354 } 5355 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 5356 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 5357 nativeMotionUp(x, y, mNavSlop); 5358 } 5359 5360 /** 5361 * Called when pressing the center key or trackball on a textfield. 5362 */ 5363 /*package*/ void centerKeyPressOnTextField() { 5364 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 5365 nativeCursorNodePointer()); 5366 } 5367 5368 private void doShortPress() { 5369 if (mNativeClass == 0) { 5370 return; 5371 } 5372 switchOutDrawHistory(); 5373 // mLastTouchX and mLastTouchY are the point in the current viewport 5374 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5375 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5376 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 5377 WebViewCore.MotionUpData motionUpData = new WebViewCore 5378 .MotionUpData(); 5379 motionUpData.mFrame = nativeCacheHitFramePointer(); 5380 motionUpData.mNode = nativeCacheHitNodePointer(); 5381 motionUpData.mBounds = nativeCacheHitNodeBounds(); 5382 motionUpData.mX = contentX; 5383 motionUpData.mY = contentY; 5384 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 5385 motionUpData); 5386 } else { 5387 doMotionUp(contentX, contentY); 5388 } 5389 } 5390 5391 private void doMotionUp(int contentX, int contentY) { 5392 if (nativeMotionUp(contentX, contentY, mNavSlop)) { 5393 if (mLogEvent) { 5394 Checkin.updateStats(mContext.getContentResolver(), 5395 Checkin.Stats.Tag.BROWSER_SNAP_CENTER, 1, 0.0); 5396 } 5397 } 5398 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 5399 playSoundEffect(SoundEffectConstants.CLICK); 5400 } 5401 } 5402 5403 // Rule for double tap: 5404 // 1. if the current scale is not same as the text wrap scale and layout 5405 // algorithm is NARROW_COLUMNS, fit to column; 5406 // 2. if the current state is not overview mode, change to overview mode; 5407 // 3. if the current state is overview mode, change to default scale. 5408 private void doDoubleTap() { 5409 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 5410 return; 5411 } 5412 mZoomCenterX = mLastTouchX; 5413 mZoomCenterY = mLastTouchY; 5414 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5415 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5416 WebSettings settings = getSettings(); 5417 // remove the zoom control after double tap 5418 if (settings.getBuiltInZoomControls()) { 5419 if (mZoomButtonsController.isVisible()) { 5420 mZoomButtonsController.setVisible(false); 5421 } 5422 } else { 5423 if (mZoomControlRunnable != null) { 5424 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5425 } 5426 if (mZoomControls != null) { 5427 mZoomControls.hide(); 5428 } 5429 } 5430 settings.setDoubleTapToastCount(0); 5431 boolean zoomToDefault = false; 5432 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 5433 && (Math.abs(mActualScale - mTextWrapScale) >= 0.01f)) { 5434 setNewZoomScale(mActualScale, true, true); 5435 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 5436 if (Math.abs(mActualScale - overviewScale) < 0.01f) { 5437 mInZoomOverview = true; 5438 } 5439 } else if (!mInZoomOverview) { 5440 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 5441 if (Math.abs(mActualScale - newScale) >= 0.01f) { 5442 mInZoomOverview = true; 5443 // Force the titlebar fully reveal in overview mode 5444 if (mScrollY < getTitleHeight()) mScrollY = 0; 5445 zoomWithPreview(newScale); 5446 } else if (Math.abs(mActualScale - mDefaultScale) >= 0.01f) { 5447 zoomToDefault = true; 5448 } 5449 } else { 5450 zoomToDefault = true; 5451 } 5452 if (zoomToDefault) { 5453 mInZoomOverview = false; 5454 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 5455 if (left != NO_LEFTEDGE) { 5456 // add a 5pt padding to the left edge. 5457 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 5458 - mScrollX; 5459 // Re-calculate the zoom center so that the new scroll x will be 5460 // on the left edge. 5461 if (viewLeft > 0) { 5462 mZoomCenterX = viewLeft * mDefaultScale 5463 / (mDefaultScale - mActualScale); 5464 } else { 5465 scrollBy(viewLeft, 0); 5466 mZoomCenterX = 0; 5467 } 5468 } 5469 zoomWithPreview(mDefaultScale); 5470 } 5471 } 5472 5473 // Called by JNI to handle a touch on a node representing an email address, 5474 // address, or phone number 5475 private void overrideLoading(String url) { 5476 mCallbackProxy.uiOverrideUrlLoading(url); 5477 } 5478 5479 @Override 5480 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 5481 boolean result = false; 5482 if (inEditingMode()) { 5483 result = mWebTextView.requestFocus(direction, 5484 previouslyFocusedRect); 5485 } else { 5486 result = super.requestFocus(direction, previouslyFocusedRect); 5487 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 5488 // For cases such as GMail, where we gain focus from a direction, 5489 // we want to move to the first available link. 5490 // FIXME: If there are no visible links, we may not want to 5491 int fakeKeyDirection = 0; 5492 switch(direction) { 5493 case View.FOCUS_UP: 5494 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 5495 break; 5496 case View.FOCUS_DOWN: 5497 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 5498 break; 5499 case View.FOCUS_LEFT: 5500 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 5501 break; 5502 case View.FOCUS_RIGHT: 5503 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 5504 break; 5505 default: 5506 return result; 5507 } 5508 if (mNativeClass != 0 && !nativeHasCursorNode()) { 5509 navHandledKey(fakeKeyDirection, 1, true, 0, true); 5510 } 5511 } 5512 } 5513 return result; 5514 } 5515 5516 @Override 5517 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5518 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 5519 5520 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5521 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5522 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5523 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5524 5525 int measuredHeight = heightSize; 5526 int measuredWidth = widthSize; 5527 5528 // Grab the content size from WebViewCore. 5529 int contentHeight = contentToViewDimension(mContentHeight); 5530 int contentWidth = contentToViewDimension(mContentWidth); 5531 5532// Log.d(LOGTAG, "------- measure " + heightMode); 5533 5534 if (heightMode != MeasureSpec.EXACTLY) { 5535 mHeightCanMeasure = true; 5536 measuredHeight = contentHeight; 5537 if (heightMode == MeasureSpec.AT_MOST) { 5538 // If we are larger than the AT_MOST height, then our height can 5539 // no longer be measured and we should scroll internally. 5540 if (measuredHeight > heightSize) { 5541 measuredHeight = heightSize; 5542 mHeightCanMeasure = false; 5543 } 5544 } 5545 } else { 5546 mHeightCanMeasure = false; 5547 } 5548 if (mNativeClass != 0) { 5549 nativeSetHeightCanMeasure(mHeightCanMeasure); 5550 } 5551 // For the width, always use the given size unless unspecified. 5552 if (widthMode == MeasureSpec.UNSPECIFIED) { 5553 mWidthCanMeasure = true; 5554 measuredWidth = contentWidth; 5555 } else { 5556 mWidthCanMeasure = false; 5557 } 5558 5559 synchronized (this) { 5560 setMeasuredDimension(measuredWidth, measuredHeight); 5561 } 5562 } 5563 5564 @Override 5565 public boolean requestChildRectangleOnScreen(View child, 5566 Rect rect, 5567 boolean immediate) { 5568 rect.offset(child.getLeft() - child.getScrollX(), 5569 child.getTop() - child.getScrollY()); 5570 5571 int height = getViewHeightWithTitle(); 5572 int screenTop = mScrollY; 5573 int screenBottom = screenTop + height; 5574 5575 int scrollYDelta = 0; 5576 5577 if (rect.bottom > screenBottom) { 5578 int oneThirdOfScreenHeight = height / 3; 5579 if (rect.height() > 2 * oneThirdOfScreenHeight) { 5580 // If the rectangle is too tall to fit in the bottom two thirds 5581 // of the screen, place it at the top. 5582 scrollYDelta = rect.top - screenTop; 5583 } else { 5584 // If the rectangle will still fit on screen, we want its 5585 // top to be in the top third of the screen. 5586 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 5587 } 5588 } else if (rect.top < screenTop) { 5589 scrollYDelta = rect.top - screenTop; 5590 } 5591 5592 int width = getWidth() - getVerticalScrollbarWidth(); 5593 int screenLeft = mScrollX; 5594 int screenRight = screenLeft + width; 5595 5596 int scrollXDelta = 0; 5597 5598 if (rect.right > screenRight && rect.left > screenLeft) { 5599 if (rect.width() > width) { 5600 scrollXDelta += (rect.left - screenLeft); 5601 } else { 5602 scrollXDelta += (rect.right - screenRight); 5603 } 5604 } else if (rect.left < screenLeft) { 5605 scrollXDelta -= (screenLeft - rect.left); 5606 } 5607 5608 if ((scrollYDelta | scrollXDelta) != 0) { 5609 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 5610 } 5611 5612 return false; 5613 } 5614 5615 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 5616 String replace, int newStart, int newEnd) { 5617 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 5618 arg.mReplace = replace; 5619 arg.mNewStart = newStart; 5620 arg.mNewEnd = newEnd; 5621 mTextGeneration++; 5622 arg.mTextGeneration = mTextGeneration; 5623 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 5624 } 5625 5626 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 5627 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 5628 arg.mEvent = event; 5629 arg.mCurrentText = currentText; 5630 // Increase our text generation number, and pass it to webcore thread 5631 mTextGeneration++; 5632 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 5633 // WebKit's document state is not saved until about to leave the page. 5634 // To make sure the host application, like Browser, has the up to date 5635 // document state when it goes to background, we force to save the 5636 // document state. 5637 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 5638 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 5639 cursorData(), 1000); 5640 } 5641 5642 /* package */ WebViewCore getWebViewCore() { 5643 return mWebViewCore; 5644 } 5645 5646 //------------------------------------------------------------------------- 5647 // Methods can be called from a separate thread, like WebViewCore 5648 // If it needs to call the View system, it has to send message. 5649 //------------------------------------------------------------------------- 5650 5651 /** 5652 * General handler to receive message coming from webkit thread 5653 */ 5654 class PrivateHandler extends Handler { 5655 @Override 5656 public void handleMessage(Message msg) { 5657 // exclude INVAL_RECT_MSG_ID since it is frequently output 5658 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 5659 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 5660 > FIND_AGAIN ? Integer.toString(msg.what) 5661 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 5662 } 5663 if (mWebViewCore == null) { 5664 // after WebView's destroy() is called, skip handling messages. 5665 return; 5666 } 5667 switch (msg.what) { 5668 case REMEMBER_PASSWORD: { 5669 mDatabase.setUsernamePassword( 5670 msg.getData().getString("host"), 5671 msg.getData().getString("username"), 5672 msg.getData().getString("password")); 5673 ((Message) msg.obj).sendToTarget(); 5674 break; 5675 } 5676 case NEVER_REMEMBER_PASSWORD: { 5677 mDatabase.setUsernamePassword( 5678 msg.getData().getString("host"), null, null); 5679 ((Message) msg.obj).sendToTarget(); 5680 break; 5681 } 5682 case SWITCH_TO_SHORTPRESS: { 5683 // if mPreventDrag is not confirmed, treat it as no so that 5684 // it won't block panning the page. 5685 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5686 mPreventDrag = PREVENT_DRAG_NO; 5687 mPreventLongPress = false; 5688 mPreventDoubleTap = false; 5689 } 5690 if (mTouchMode == TOUCH_INIT_MODE) { 5691 mTouchMode = mFullScreenHolder == null 5692 ? TOUCH_SHORTPRESS_START_MODE 5693 : TOUCH_SHORTPRESS_MODE; 5694 updateSelection(); 5695 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5696 mTouchMode = TOUCH_DONE_MODE; 5697 } 5698 break; 5699 } 5700 case SWITCH_TO_LONGPRESS: { 5701 if (mPreventLongPress) { 5702 mTouchMode = TOUCH_DONE_MODE; 5703 WebViewCore.TouchEventData ted 5704 = new WebViewCore.TouchEventData(); 5705 ted.mAction = WebViewCore.ACTION_LONGPRESS; 5706 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 5707 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 5708 ted.mEventTime = SystemClock.uptimeMillis(); 5709 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5710 } else if (mPreventDrag == PREVENT_DRAG_NO) { 5711 mTouchMode = TOUCH_DONE_MODE; 5712 if (mFullScreenHolder == null) { 5713 performLongClick(); 5714 rebuildWebTextView(); 5715 } 5716 } 5717 break; 5718 } 5719 case RELEASE_SINGLE_TAP: { 5720 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5721 // if mPreventDrag is not confirmed, treat it as 5722 // no so that it won't block tap. 5723 mPreventDrag = PREVENT_DRAG_NO; 5724 mPreventLongPress = false; 5725 mPreventDoubleTap = false; 5726 } 5727 if (mPreventDrag == PREVENT_DRAG_NO) { 5728 mTouchMode = TOUCH_DONE_MODE; 5729 doShortPress(); 5730 } 5731 break; 5732 } 5733 case SCROLL_BY_MSG_ID: 5734 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 5735 break; 5736 case SYNC_SCROLL_TO_MSG_ID: 5737 if (mUserScroll) { 5738 // if user has scrolled explicitly, don't sync the 5739 // scroll position any more 5740 mUserScroll = false; 5741 break; 5742 } 5743 // fall through 5744 case SCROLL_TO_MSG_ID: 5745 if (setContentScrollTo(msg.arg1, msg.arg2)) { 5746 // if we can't scroll to the exact position due to pin, 5747 // send a message to WebCore to re-scroll when we get a 5748 // new picture 5749 mUserScroll = false; 5750 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 5751 msg.arg1, msg.arg2); 5752 } 5753 break; 5754 case SPAWN_SCROLL_TO_MSG_ID: 5755 spawnContentScrollTo(msg.arg1, msg.arg2); 5756 break; 5757 case UPDATE_ZOOM_RANGE: { 5758 WebViewCore.RestoreState restoreState 5759 = (WebViewCore.RestoreState) msg.obj; 5760 // mScrollX contains the new minPrefWidth 5761 updateZoomRange(restoreState, getViewWidth(), 5762 restoreState.mScrollX, false); 5763 break; 5764 } 5765 case NEW_PICTURE_MSG_ID: { 5766 WebSettings settings = mWebViewCore.getSettings(); 5767 // called for new content 5768 final int viewWidth = getViewWidth(); 5769 final WebViewCore.DrawData draw = 5770 (WebViewCore.DrawData) msg.obj; 5771 final Point viewSize = draw.mViewPoint; 5772 boolean useWideViewport = settings.getUseWideViewPort(); 5773 WebViewCore.RestoreState restoreState = draw.mRestoreState; 5774 boolean hasRestoreState = restoreState != null; 5775 if (hasRestoreState) { 5776 mInZoomOverview = false; 5777 updateZoomRange(restoreState, viewSize.x, 5778 draw.mMinPrefWidth, true); 5779 if (mInitialScaleInPercent > 0) { 5780 setNewZoomScale(mInitialScaleInPercent / 100.0f, 5781 mInitialScaleInPercent != mTextWrapScale * 100, 5782 false); 5783 } else if (restoreState.mViewScale > 0) { 5784 mTextWrapScale = restoreState.mTextWrapScale; 5785 setNewZoomScale(restoreState.mViewScale, false, 5786 false); 5787 } else { 5788 mInZoomOverview = useWideViewport 5789 && settings.getLoadWithOverviewMode(); 5790 float scale; 5791 if (mInZoomOverview) { 5792 scale = (float) viewWidth 5793 / DEFAULT_VIEWPORT_WIDTH; 5794 } else { 5795 scale = restoreState.mTextWrapScale; 5796 } 5797 setNewZoomScale(scale, Math.abs(scale 5798 - mTextWrapScale) >= 0.01f, false); 5799 } 5800 setContentScrollTo(restoreState.mScrollX, 5801 restoreState.mScrollY); 5802 // As we are on a new page, remove the WebTextView. This 5803 // is necessary for page loads driven by webkit, and in 5804 // particular when the user was on a password field, so 5805 // the WebTextView was visible. 5806 clearTextEntry(); 5807 // update the zoom buttons as the scale can be changed 5808 if (getSettings().getBuiltInZoomControls()) { 5809 updateZoomButtonsEnabled(); 5810 } 5811 } 5812 // We update the layout (i.e. request a layout from the 5813 // view system) if the last view size that we sent to 5814 // WebCore matches the view size of the picture we just 5815 // received in the fixed dimension. 5816 final boolean updateLayout = viewSize.x == mLastWidthSent 5817 && viewSize.y == mLastHeightSent; 5818 recordNewContentSize(draw.mWidthHeight.x, 5819 draw.mWidthHeight.y 5820 + (mFindIsUp ? mFindHeight : 0), updateLayout); 5821 if (DebugFlags.WEB_VIEW) { 5822 Rect b = draw.mInvalRegion.getBounds(); 5823 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 5824 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 5825 } 5826 invalidateContentRect(draw.mInvalRegion.getBounds()); 5827 if (mPictureListener != null) { 5828 mPictureListener.onNewPicture(WebView.this, capturePicture()); 5829 } 5830 if (useWideViewport) { 5831 // limit mZoomOverviewWidth upper bound to 5832 // sMaxViewportWidth so that if the page doesn't behave 5833 // well, the WebView won't go insane. limit the lower 5834 // bound to match the default scale for mobile sites. 5835 mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math 5836 .max((int) (viewWidth / mDefaultScale), Math 5837 .max(draw.mMinPrefWidth, 5838 draw.mViewPoint.x))); 5839 } 5840 if (!mMinZoomScaleFixed) { 5841 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 5842 } 5843 if (!mDrawHistory && mInZoomOverview) { 5844 // fit the content width to the current view. Ignore 5845 // the rounding error case. 5846 if (Math.abs((viewWidth * mInvActualScale) 5847 - mZoomOverviewWidth) > 1) { 5848 setNewZoomScale((float) viewWidth 5849 / mZoomOverviewWidth, Math.abs(mActualScale 5850 - mTextWrapScale) < 0.01f, false); 5851 } 5852 } 5853 if (draw.mFocusSizeChanged && inEditingMode()) { 5854 mFocusSizeChanged = true; 5855 } 5856 if (hasRestoreState) { 5857 mViewManager.postReadyToDrawAll(); 5858 } 5859 break; 5860 } 5861 case WEBCORE_INITIALIZED_MSG_ID: 5862 // nativeCreate sets mNativeClass to a non-zero value 5863 nativeCreate(msg.arg1); 5864 break; 5865 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 5866 // Make sure that the textfield is currently focused 5867 // and representing the same node as the pointer. 5868 if (inEditingMode() && 5869 mWebTextView.isSameTextField(msg.arg1)) { 5870 if (msg.getData().getBoolean("password")) { 5871 Spannable text = (Spannable) mWebTextView.getText(); 5872 int start = Selection.getSelectionStart(text); 5873 int end = Selection.getSelectionEnd(text); 5874 mWebTextView.setInPassword(true); 5875 // Restore the selection, which may have been 5876 // ruined by setInPassword. 5877 Spannable pword = 5878 (Spannable) mWebTextView.getText(); 5879 Selection.setSelection(pword, start, end); 5880 // If the text entry has created more events, ignore 5881 // this one. 5882 } else if (msg.arg2 == mTextGeneration) { 5883 mWebTextView.setTextAndKeepSelection( 5884 (String) msg.obj); 5885 } 5886 } 5887 break; 5888 case UPDATE_TEXT_SELECTION_MSG_ID: 5889 if (inEditingMode() 5890 && mWebTextView.isSameTextField(msg.arg1) 5891 && msg.arg2 == mTextGeneration) { 5892 WebViewCore.TextSelectionData tData 5893 = (WebViewCore.TextSelectionData) msg.obj; 5894 mWebTextView.setSelectionFromWebKit(tData.mStart, 5895 tData.mEnd); 5896 } 5897 break; 5898 case RETURN_LABEL: 5899 if (inEditingMode() 5900 && mWebTextView.isSameTextField(msg.arg1)) { 5901 mWebTextView.setHint((String) msg.obj); 5902 InputMethodManager imm 5903 = InputMethodManager.peekInstance(); 5904 // The hint is propagated to the IME in 5905 // onCreateInputConnection. If the IME is already 5906 // active, restart it so that its hint text is updated. 5907 if (imm != null && imm.isActive(mWebTextView)) { 5908 imm.restartInput(mWebTextView); 5909 } 5910 } 5911 break; 5912 case MOVE_OUT_OF_PLUGIN: 5913 navHandledKey(msg.arg1, 1, false, 0, true); 5914 break; 5915 case UPDATE_TEXT_ENTRY_MSG_ID: 5916 // this is sent after finishing resize in WebViewCore. Make 5917 // sure the text edit box is still on the screen. 5918 if (inEditingMode() && nativeCursorIsTextInput()) { 5919 mWebTextView.bringIntoView(); 5920 rebuildWebTextView(); 5921 } 5922 break; 5923 case CLEAR_TEXT_ENTRY: 5924 clearTextEntry(); 5925 break; 5926 case INVAL_RECT_MSG_ID: { 5927 Rect r = (Rect)msg.obj; 5928 if (r == null) { 5929 invalidate(); 5930 } else { 5931 // we need to scale r from content into view coords, 5932 // which viewInvalidate() does for us 5933 viewInvalidate(r.left, r.top, r.right, r.bottom); 5934 } 5935 break; 5936 } 5937 case IMMEDIATE_REPAINT_MSG_ID: { 5938 int updates = msg.arg1; 5939 if (updates != 0) { 5940 // updates is a C++ pointer to a Vector of 5941 // AnimationValues that we apply to the layers. 5942 // The Vector is deallocated in nativeUpdateLayers(). 5943 nativeUpdateLayers(updates); 5944 } 5945 invalidate(); 5946 break; 5947 } 5948 case SET_ROOT_LAYER_MSG_ID: { 5949 int oldLayer = mRootLayer; 5950 mRootLayer = msg.arg1; 5951 if (oldLayer > 0) { 5952 nativeDestroyLayer(oldLayer); 5953 } 5954 if (mRootLayer == 0) { 5955 mLayersHaveAnimations = false; 5956 } 5957 if (mEvaluateThread != null) { 5958 mEvaluateThread.cancel(); 5959 mEvaluateThread = null; 5960 } 5961 if (nativeLayersHaveAnimations(mRootLayer)) { 5962 mLayersHaveAnimations = true; 5963 mEvaluateThread = new EvaluateLayersAnimations(); 5964 mEvaluateThread.start(); 5965 } 5966 invalidate(); 5967 break; 5968 } 5969 case REQUEST_FORM_DATA: 5970 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 5971 if (mWebTextView.isSameTextField(msg.arg1)) { 5972 mWebTextView.setAdapterCustom(adapter); 5973 } 5974 break; 5975 case RESUME_WEBCORE_PRIORITY: 5976 WebViewCore.resumePriority(); 5977 break; 5978 5979 case LONG_PRESS_CENTER: 5980 // as this is shared by keydown and trackballdown, reset all 5981 // the states 5982 mGotCenterDown = false; 5983 mTrackballDown = false; 5984 performLongClick(); 5985 break; 5986 5987 case WEBCORE_NEED_TOUCH_EVENTS: 5988 mForwardTouchEvents = (msg.arg1 != 0); 5989 break; 5990 5991 case PREVENT_TOUCH_ID: 5992 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 5993 // dont override if mPreventDrag has been set to no due 5994 // to time out 5995 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5996 mPreventDrag = (msg.arg2 & TOUCH_PREVENT_DRAG) 5997 == TOUCH_PREVENT_DRAG ? PREVENT_DRAG_YES 5998 : PREVENT_DRAG_NO; 5999 if (mPreventDrag == PREVENT_DRAG_YES) { 6000 mTouchMode = TOUCH_DONE_MODE; 6001 } else { 6002 mPreventLongPress = 6003 (msg.arg2 & TOUCH_PREVENT_LONGPRESS) 6004 == TOUCH_PREVENT_LONGPRESS; 6005 mPreventDoubleTap = 6006 (msg.arg2 & TOUCH_PREVENT_DOUBLETAP) 6007 == TOUCH_PREVENT_DOUBLETAP; 6008 } 6009 } 6010 } 6011 break; 6012 6013 case REQUEST_KEYBOARD: 6014 if (msg.arg1 == 0) { 6015 hideSoftKeyboard(); 6016 } else { 6017 displaySoftKeyboard(1 == msg.arg2); 6018 } 6019 break; 6020 6021 case FIND_AGAIN: 6022 // Ignore if find has been dismissed. 6023 if (mFindIsUp) { 6024 findAll(mLastFind); 6025 } 6026 break; 6027 6028 case DRAG_HELD_MOTIONLESS: 6029 mHeldMotionless = MOTIONLESS_TRUE; 6030 invalidate(); 6031 // fall through to keep scrollbars awake 6032 6033 case AWAKEN_SCROLL_BARS: 6034 if (mTouchMode == TOUCH_DRAG_MODE 6035 && mHeldMotionless == MOTIONLESS_TRUE) { 6036 awakenScrollBars(ViewConfiguration 6037 .getScrollDefaultDelay(), false); 6038 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6039 .obtainMessage(AWAKEN_SCROLL_BARS), 6040 ViewConfiguration.getScrollDefaultDelay()); 6041 } 6042 break; 6043 6044 case DO_MOTION_UP: 6045 doMotionUp(msg.arg1, msg.arg2); 6046 break; 6047 6048 case SHOW_FULLSCREEN: { 6049 WebViewCore.PluginFullScreenData data 6050 = (WebViewCore.PluginFullScreenData) msg.obj; 6051 if (data.mNpp != 0 && data.mView != null) { 6052 if (mFullScreenHolder != null) { 6053 Log.w(LOGTAG, 6054 "Should not have another full screen."); 6055 mFullScreenHolder.dismiss(); 6056 } 6057 mFullScreenHolder = new PluginFullScreenHolder( 6058 WebView.this, data.mNpp); 6059 // as we are sharing the View between full screen and 6060 // embedded mode, we have to remove the 6061 // AbsoluteLayout.LayoutParams set by embedded mode to 6062 // ViewGroup.LayoutParams before adding it to the dialog 6063 data.mView.setLayoutParams(new ViewGroup.LayoutParams( 6064 ViewGroup.LayoutParams.FILL_PARENT, 6065 ViewGroup.LayoutParams.FILL_PARENT)); 6066 mFullScreenHolder.setContentView(data.mView); 6067 mFullScreenHolder.setCancelable(false); 6068 mFullScreenHolder.setCanceledOnTouchOutside(false); 6069 mFullScreenHolder.show(); 6070 } else if (mFullScreenHolder == null) { 6071 // this may happen if user dismisses the fullscreen and 6072 // then the WebCore re-position message finally reached 6073 // the UI thread. 6074 break; 6075 } 6076 // move the matching embedded view fully into the view so 6077 // that touch will be valid instead of rejected due to out 6078 // of the visible bounds 6079 // TODO: do we need to preserve the original position and 6080 // scale so that we can revert it when leaving the full 6081 // screen mode? 6082 int x = contentToViewX(data.mDocX); 6083 int y = contentToViewY(data.mDocY); 6084 int width = contentToViewDimension(data.mDocWidth); 6085 int height = contentToViewDimension(data.mDocHeight); 6086 int viewWidth = getViewWidth(); 6087 int viewHeight = getViewHeight(); 6088 int newX = mScrollX; 6089 int newY = mScrollY; 6090 if (x < mScrollX) { 6091 newX = x + (width > viewWidth 6092 ? (width - viewWidth) / 2 : 0); 6093 } else if (x + width > mScrollX + viewWidth) { 6094 newX = x + width - viewWidth - (width > viewWidth 6095 ? (width - viewWidth) / 2 : 0); 6096 } 6097 if (y < mScrollY) { 6098 newY = y + (height > viewHeight 6099 ? (height - viewHeight) / 2 : 0); 6100 } else if (y + height > mScrollY + viewHeight) { 6101 newY = y + height - viewHeight - (height > viewHeight 6102 ? (height - viewHeight) / 2 : 0); 6103 } 6104 scrollTo(newX, newY); 6105 if (width > viewWidth || height > viewHeight) { 6106 mZoomCenterX = viewWidth * .5f; 6107 mZoomCenterY = viewHeight * .5f; 6108 // do not change text wrap scale so that there is no 6109 // reflow 6110 setNewZoomScale(mActualScale 6111 / Math.max((float) width / viewWidth, 6112 (float) height / viewHeight), false, 6113 false); 6114 } 6115 // Now update the bound 6116 mFullScreenHolder.updateBound(contentToViewX(data.mDocX) 6117 - mScrollX, contentToViewY(data.mDocY) - mScrollY, 6118 contentToViewDimension(data.mDocWidth), 6119 contentToViewDimension(data.mDocHeight)); 6120 } 6121 break; 6122 6123 case HIDE_FULLSCREEN: 6124 if (mFullScreenHolder != null) { 6125 mFullScreenHolder.dismiss(); 6126 mFullScreenHolder = null; 6127 } 6128 break; 6129 6130 case DOM_FOCUS_CHANGED: 6131 if (inEditingMode()) { 6132 nativeClearCursor(); 6133 rebuildWebTextView(); 6134 } 6135 break; 6136 6137 case SHOW_RECT_MSG_ID: { 6138 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6139 int x = mScrollX; 6140 int left = contentToViewX(data.mLeft); 6141 int width = contentToViewDimension(data.mWidth); 6142 int maxWidth = contentToViewDimension(data.mContentWidth); 6143 int viewWidth = getViewWidth(); 6144 if (width < viewWidth) { 6145 // center align 6146 x += left + width / 2 - mScrollX - viewWidth / 2; 6147 } else { 6148 x += (int) (left + data.mXPercentInDoc * width 6149 - mScrollX - data.mXPercentInView * viewWidth); 6150 } 6151 if (DebugFlags.WEB_VIEW) { 6152 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6153 width + ",maxWidth=" + maxWidth + 6154 ",viewWidth=" + viewWidth + ",x=" 6155 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6156 ",xPercentInView=" + data.mXPercentInView+ ")"); 6157 } 6158 // use the passing content width to cap x as the current 6159 // mContentWidth may not be updated yet 6160 x = Math.max(0, 6161 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6162 int top = contentToViewY(data.mTop); 6163 int height = contentToViewDimension(data.mHeight); 6164 int maxHeight = contentToViewDimension(data.mContentHeight); 6165 int viewHeight = getViewHeight(); 6166 int y = (int) (top + data.mYPercentInDoc * height - 6167 data.mYPercentInView * viewHeight); 6168 if (DebugFlags.WEB_VIEW) { 6169 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6170 height + ",maxHeight=" + maxHeight + 6171 ",viewHeight=" + viewHeight + ",y=" 6172 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6173 ",yPercentInView=" + data.mYPercentInView+ ")"); 6174 } 6175 // use the passing content height to cap y as the current 6176 // mContentHeight may not be updated yet 6177 y = Math.max(0, 6178 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6179 // We need to take into account the visible title height 6180 // when scrolling since y is an absolute view position. 6181 y = Math.max(0, y - getVisibleTitleHeight()); 6182 scrollTo(x, y); 6183 } 6184 break; 6185 6186 default: 6187 super.handleMessage(msg); 6188 break; 6189 } 6190 } 6191 } 6192 6193 // Class used to use a dropdown for a <select> element 6194 private class InvokeListBox implements Runnable { 6195 // Whether the listbox allows multiple selection. 6196 private boolean mMultiple; 6197 // Passed in to a list with multiple selection to tell 6198 // which items are selected. 6199 private int[] mSelectedArray; 6200 // Passed in to a list with single selection to tell 6201 // where the initial selection is. 6202 private int mSelection; 6203 6204 private Container[] mContainers; 6205 6206 // Need these to provide stable ids to my ArrayAdapter, 6207 // which normally does not have stable ids. (Bug 1250098) 6208 private class Container extends Object { 6209 /** 6210 * Possible values for mEnabled. Keep in sync with OptionStatus in 6211 * WebViewCore.cpp 6212 */ 6213 final static int OPTGROUP = -1; 6214 final static int OPTION_DISABLED = 0; 6215 final static int OPTION_ENABLED = 1; 6216 6217 String mString; 6218 int mEnabled; 6219 int mId; 6220 6221 public String toString() { 6222 return mString; 6223 } 6224 } 6225 6226 /** 6227 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6228 * and allow filtering. 6229 */ 6230 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6231 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6232 super(context, 6233 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6234 com.android.internal.R.layout.select_dialog_singlechoice, 6235 objects); 6236 } 6237 6238 @Override 6239 public View getView(int position, View convertView, 6240 ViewGroup parent) { 6241 // Always pass in null so that we will get a new CheckedTextView 6242 // Otherwise, an item which was previously used as an <optgroup> 6243 // element (i.e. has no check), could get used as an <option> 6244 // element, which needs a checkbox/radio, but it would not have 6245 // one. 6246 convertView = super.getView(position, null, parent); 6247 Container c = item(position); 6248 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6249 // ListView does not draw dividers between disabled and 6250 // enabled elements. Use a LinearLayout to provide dividers 6251 LinearLayout layout = new LinearLayout(mContext); 6252 layout.setOrientation(LinearLayout.VERTICAL); 6253 if (position > 0) { 6254 View dividerTop = new View(mContext); 6255 dividerTop.setBackgroundResource( 6256 android.R.drawable.divider_horizontal_bright); 6257 layout.addView(dividerTop); 6258 } 6259 6260 if (Container.OPTGROUP == c.mEnabled) { 6261 // Currently select_dialog_multichoice and 6262 // select_dialog_singlechoice are CheckedTextViews. If 6263 // that changes, the class cast will no longer be valid. 6264 Assert.assertTrue( 6265 convertView instanceof CheckedTextView); 6266 ((CheckedTextView) convertView).setCheckMarkDrawable( 6267 null); 6268 } else { 6269 // c.mEnabled == Container.OPTION_DISABLED 6270 // Draw the disabled element in a disabled state. 6271 convertView.setEnabled(false); 6272 } 6273 6274 layout.addView(convertView); 6275 if (position < getCount() - 1) { 6276 View dividerBottom = new View(mContext); 6277 dividerBottom.setBackgroundResource( 6278 android.R.drawable.divider_horizontal_bright); 6279 layout.addView(dividerBottom); 6280 } 6281 return layout; 6282 } 6283 return convertView; 6284 } 6285 6286 @Override 6287 public boolean hasStableIds() { 6288 // AdapterView's onChanged method uses this to determine whether 6289 // to restore the old state. Return false so that the old (out 6290 // of date) state does not replace the new, valid state. 6291 return false; 6292 } 6293 6294 private Container item(int position) { 6295 if (position < 0 || position >= getCount()) { 6296 return null; 6297 } 6298 return (Container) getItem(position); 6299 } 6300 6301 @Override 6302 public long getItemId(int position) { 6303 Container item = item(position); 6304 if (item == null) { 6305 return -1; 6306 } 6307 return item.mId; 6308 } 6309 6310 @Override 6311 public boolean areAllItemsEnabled() { 6312 return false; 6313 } 6314 6315 @Override 6316 public boolean isEnabled(int position) { 6317 Container item = item(position); 6318 if (item == null) { 6319 return false; 6320 } 6321 return Container.OPTION_ENABLED == item.mEnabled; 6322 } 6323 } 6324 6325 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 6326 mMultiple = true; 6327 mSelectedArray = selected; 6328 6329 int length = array.length; 6330 mContainers = new Container[length]; 6331 for (int i = 0; i < length; i++) { 6332 mContainers[i] = new Container(); 6333 mContainers[i].mString = array[i]; 6334 mContainers[i].mEnabled = enabled[i]; 6335 mContainers[i].mId = i; 6336 } 6337 } 6338 6339 private InvokeListBox(String[] array, int[] enabled, int selection) { 6340 mSelection = selection; 6341 mMultiple = false; 6342 6343 int length = array.length; 6344 mContainers = new Container[length]; 6345 for (int i = 0; i < length; i++) { 6346 mContainers[i] = new Container(); 6347 mContainers[i].mString = array[i]; 6348 mContainers[i].mEnabled = enabled[i]; 6349 mContainers[i].mId = i; 6350 } 6351 } 6352 6353 /* 6354 * Whenever the data set changes due to filtering, this class ensures 6355 * that the checked item remains checked. 6356 */ 6357 private class SingleDataSetObserver extends DataSetObserver { 6358 private long mCheckedId; 6359 private ListView mListView; 6360 private Adapter mAdapter; 6361 6362 /* 6363 * Create a new observer. 6364 * @param id The ID of the item to keep checked. 6365 * @param l ListView for getting and clearing the checked states 6366 * @param a Adapter for getting the IDs 6367 */ 6368 public SingleDataSetObserver(long id, ListView l, Adapter a) { 6369 mCheckedId = id; 6370 mListView = l; 6371 mAdapter = a; 6372 } 6373 6374 public void onChanged() { 6375 // The filter may have changed which item is checked. Find the 6376 // item that the ListView thinks is checked. 6377 int position = mListView.getCheckedItemPosition(); 6378 long id = mAdapter.getItemId(position); 6379 if (mCheckedId != id) { 6380 // Clear the ListView's idea of the checked item, since 6381 // it is incorrect 6382 mListView.clearChoices(); 6383 // Search for mCheckedId. If it is in the filtered list, 6384 // mark it as checked 6385 int count = mAdapter.getCount(); 6386 for (int i = 0; i < count; i++) { 6387 if (mAdapter.getItemId(i) == mCheckedId) { 6388 mListView.setItemChecked(i, true); 6389 break; 6390 } 6391 } 6392 } 6393 } 6394 6395 public void onInvalidate() {} 6396 } 6397 6398 public void run() { 6399 final ListView listView = (ListView) LayoutInflater.from(mContext) 6400 .inflate(com.android.internal.R.layout.select_dialog, null); 6401 final MyArrayListAdapter adapter = new 6402 MyArrayListAdapter(mContext, mContainers, mMultiple); 6403 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 6404 .setView(listView).setCancelable(true) 6405 .setInverseBackgroundForced(true); 6406 6407 if (mMultiple) { 6408 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 6409 public void onClick(DialogInterface dialog, int which) { 6410 mWebViewCore.sendMessage( 6411 EventHub.LISTBOX_CHOICES, 6412 adapter.getCount(), 0, 6413 listView.getCheckedItemPositions()); 6414 }}); 6415 b.setNegativeButton(android.R.string.cancel, 6416 new DialogInterface.OnClickListener() { 6417 public void onClick(DialogInterface dialog, int which) { 6418 mWebViewCore.sendMessage( 6419 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6420 }}); 6421 } 6422 final AlertDialog dialog = b.create(); 6423 listView.setAdapter(adapter); 6424 listView.setFocusableInTouchMode(true); 6425 // There is a bug (1250103) where the checks in a ListView with 6426 // multiple items selected are associated with the positions, not 6427 // the ids, so the items do not properly retain their checks when 6428 // filtered. Do not allow filtering on multiple lists until 6429 // that bug is fixed. 6430 6431 listView.setTextFilterEnabled(!mMultiple); 6432 if (mMultiple) { 6433 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 6434 int length = mSelectedArray.length; 6435 for (int i = 0; i < length; i++) { 6436 listView.setItemChecked(mSelectedArray[i], true); 6437 } 6438 } else { 6439 listView.setOnItemClickListener(new OnItemClickListener() { 6440 public void onItemClick(AdapterView parent, View v, 6441 int position, long id) { 6442 mWebViewCore.sendMessage( 6443 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 6444 dialog.dismiss(); 6445 } 6446 }); 6447 if (mSelection != -1) { 6448 listView.setSelection(mSelection); 6449 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 6450 listView.setItemChecked(mSelection, true); 6451 DataSetObserver observer = new SingleDataSetObserver( 6452 adapter.getItemId(mSelection), listView, adapter); 6453 adapter.registerDataSetObserver(observer); 6454 } 6455 } 6456 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 6457 public void onCancel(DialogInterface dialog) { 6458 mWebViewCore.sendMessage( 6459 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6460 } 6461 }); 6462 dialog.show(); 6463 } 6464 } 6465 6466 /* 6467 * Request a dropdown menu for a listbox with multiple selection. 6468 * 6469 * @param array Labels for the listbox. 6470 * @param enabledArray State for each element in the list. See static 6471 * integers in Container class. 6472 * @param selectedArray Which positions are initally selected. 6473 */ 6474 void requestListBox(String[] array, int[] enabledArray, int[] 6475 selectedArray) { 6476 mPrivateHandler.post( 6477 new InvokeListBox(array, enabledArray, selectedArray)); 6478 } 6479 6480 private void updateZoomRange(WebViewCore.RestoreState restoreState, 6481 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 6482 if (restoreState.mMinScale == 0) { 6483 if (restoreState.mMobileSite) { 6484 if (minPrefWidth > Math.max(0, viewWidth)) { 6485 mMinZoomScale = (float) viewWidth / minPrefWidth; 6486 mMinZoomScaleFixed = false; 6487 if (updateZoomOverview) { 6488 WebSettings settings = getSettings(); 6489 mInZoomOverview = settings.getUseWideViewPort() && 6490 settings.getLoadWithOverviewMode(); 6491 } 6492 } else { 6493 mMinZoomScale = restoreState.mDefaultScale; 6494 mMinZoomScaleFixed = true; 6495 } 6496 } else { 6497 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 6498 mMinZoomScaleFixed = false; 6499 } 6500 } else { 6501 mMinZoomScale = restoreState.mMinScale; 6502 mMinZoomScaleFixed = true; 6503 } 6504 if (restoreState.mMaxScale == 0) { 6505 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 6506 } else { 6507 mMaxZoomScale = restoreState.mMaxScale; 6508 } 6509 } 6510 6511 /* 6512 * Request a dropdown menu for a listbox with single selection or a single 6513 * <select> element. 6514 * 6515 * @param array Labels for the listbox. 6516 * @param enabledArray State for each element in the list. See static 6517 * integers in Container class. 6518 * @param selection Which position is initally selected. 6519 */ 6520 void requestListBox(String[] array, int[] enabledArray, int selection) { 6521 mPrivateHandler.post( 6522 new InvokeListBox(array, enabledArray, selection)); 6523 } 6524 6525 // called by JNI 6526 private void sendMoveFocus(int frame, int node) { 6527 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 6528 new WebViewCore.CursorData(frame, node, 0, 0)); 6529 } 6530 6531 // called by JNI 6532 private void sendMoveMouse(int frame, int node, int x, int y) { 6533 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 6534 new WebViewCore.CursorData(frame, node, x, y)); 6535 } 6536 6537 /* 6538 * Send a mouse move event to the webcore thread. 6539 * 6540 * @param removeFocus Pass true if the "mouse" cursor is now over a node 6541 * which wants key events, but it is not the focus. This 6542 * will make the visual appear as though nothing is in 6543 * focus. Remove the WebTextView, if present, and stop 6544 * drawing the blinking caret. 6545 * called by JNI 6546 */ 6547 private void sendMoveMouseIfLatest(boolean removeFocus) { 6548 if (removeFocus) { 6549 clearTextEntry(); 6550 setFocusControllerInactive(); 6551 } 6552 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 6553 cursorData()); 6554 } 6555 6556 // called by JNI 6557 private void sendMotionUp(int touchGeneration, 6558 int frame, int node, int x, int y) { 6559 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6560 touchUpData.mMoveGeneration = touchGeneration; 6561 touchUpData.mFrame = frame; 6562 touchUpData.mNode = node; 6563 touchUpData.mX = x; 6564 touchUpData.mY = y; 6565 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6566 } 6567 6568 6569 private int getScaledMaxXScroll() { 6570 int width; 6571 if (mHeightCanMeasure == false) { 6572 width = getViewWidth() / 4; 6573 } else { 6574 Rect visRect = new Rect(); 6575 calcOurVisibleRect(visRect); 6576 width = visRect.width() / 2; 6577 } 6578 // FIXME the divisor should be retrieved from somewhere 6579 return viewToContentX(width); 6580 } 6581 6582 private int getScaledMaxYScroll() { 6583 int height; 6584 if (mHeightCanMeasure == false) { 6585 height = getViewHeight() / 4; 6586 } else { 6587 Rect visRect = new Rect(); 6588 calcOurVisibleRect(visRect); 6589 height = visRect.height() / 2; 6590 } 6591 // FIXME the divisor should be retrieved from somewhere 6592 // the closest thing today is hard-coded into ScrollView.java 6593 // (from ScrollView.java, line 363) int maxJump = height/2; 6594 return Math.round(height * mInvActualScale); 6595 } 6596 6597 /** 6598 * Called by JNI to invalidate view 6599 */ 6600 private void viewInvalidate() { 6601 invalidate(); 6602 } 6603 6604 // return true if the key was handled 6605 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 6606 long time, boolean ignorePlugin) { 6607 if (mNativeClass == 0) { 6608 return false; 6609 } 6610 if (ignorePlugin == false && nativeFocusIsPlugin()) { 6611 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 6612 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 6613 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 6614 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 6615 , 0, 0, 0); 6616 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 6617 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 6618 return true; 6619 } 6620 mLastCursorTime = time; 6621 mLastCursorBounds = nativeGetCursorRingBounds(); 6622 boolean keyHandled 6623 = nativeMoveCursor(keyCode, count, noScroll) == false; 6624 if (DebugFlags.WEB_VIEW) { 6625 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 6626 + " mLastCursorTime=" + mLastCursorTime 6627 + " handled=" + keyHandled); 6628 } 6629 if (keyHandled == false || mHeightCanMeasure == false) { 6630 return keyHandled; 6631 } 6632 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 6633 if (contentCursorRingBounds.isEmpty()) return keyHandled; 6634 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 6635 Rect visRect = new Rect(); 6636 calcOurVisibleRect(visRect); 6637 Rect outset = new Rect(visRect); 6638 int maxXScroll = visRect.width() / 2; 6639 int maxYScroll = visRect.height() / 2; 6640 outset.inset(-maxXScroll, -maxYScroll); 6641 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 6642 return keyHandled; 6643 } 6644 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 6645 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 6646 maxXScroll); 6647 if (maxH > 0) { 6648 pinScrollBy(maxH, 0, true, 0); 6649 } else { 6650 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 6651 -maxXScroll); 6652 if (maxH < 0) { 6653 pinScrollBy(maxH, 0, true, 0); 6654 } 6655 } 6656 if (mLastCursorBounds.isEmpty()) return keyHandled; 6657 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 6658 return keyHandled; 6659 } 6660 if (DebugFlags.WEB_VIEW) { 6661 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 6662 + contentCursorRingBounds); 6663 } 6664 requestRectangleOnScreen(viewCursorRingBounds); 6665 mUserScroll = true; 6666 return keyHandled; 6667 } 6668 6669 /** 6670 * Set the background color. It's white by default. Pass 6671 * zero to make the view transparent. 6672 * @param color the ARGB color described by Color.java 6673 */ 6674 public void setBackgroundColor(int color) { 6675 mBackgroundColor = color; 6676 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 6677 } 6678 6679 public void debugDump() { 6680 nativeDebugDump(); 6681 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 6682 } 6683 6684 /** 6685 * Draw the HTML page into the specified canvas. This call ignores any 6686 * view-specific zoom, scroll offset, or other changes. It does not draw 6687 * any view-specific chrome, such as progress or URL bars. 6688 * 6689 * @hide only needs to be accessible to Browser and testing 6690 */ 6691 public void drawPage(Canvas canvas) { 6692 mWebViewCore.drawContentPicture(canvas, 0, false, false); 6693 } 6694 6695 /** 6696 * Set the time to wait between passing touches to WebCore. See also the 6697 * TOUCH_SENT_INTERVAL member for further discussion. 6698 * 6699 * @hide This is only used by the DRT test application. 6700 */ 6701 public void setTouchInterval(int interval) { 6702 mCurrentTouchInterval = interval; 6703 } 6704 6705 /** 6706 * Update our cache with updatedText. 6707 * @param updatedText The new text to put in our cache. 6708 */ 6709 /* package */ void updateCachedTextfield(String updatedText) { 6710 // Also place our generation number so that when we look at the cache 6711 // we recognize that it is up to date. 6712 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 6713 } 6714 6715 private native int nativeCacheHitFramePointer(); 6716 private native Rect nativeCacheHitNodeBounds(); 6717 private native int nativeCacheHitNodePointer(); 6718 /* package */ native void nativeClearCursor(); 6719 private native void nativeCreate(int ptr); 6720 private native int nativeCursorFramePointer(); 6721 private native Rect nativeCursorNodeBounds(); 6722 private native int nativeCursorNodePointer(); 6723 /* package */ native boolean nativeCursorMatchesFocus(); 6724 private native boolean nativeCursorIntersects(Rect visibleRect); 6725 private native boolean nativeCursorIsAnchor(); 6726 private native boolean nativeCursorIsTextInput(); 6727 private native Point nativeCursorPosition(); 6728 private native String nativeCursorText(); 6729 /** 6730 * Returns true if the native cursor node says it wants to handle key events 6731 * (ala plugins). This can only be called if mNativeClass is non-zero! 6732 */ 6733 private native boolean nativeCursorWantsKeyEvents(); 6734 private native void nativeDebugDump(); 6735 private native void nativeDestroy(); 6736 private native void nativeDrawCursorRing(Canvas content); 6737 private native void nativeDestroyLayer(int layer); 6738 private native int nativeEvaluateLayersAnimations(int layer); 6739 private native boolean nativeLayersHaveAnimations(int layer); 6740 private native void nativeUpdateLayers(int updates); 6741 private native void nativeDrawLayers(int layer, 6742 int scrollX, int scrollY, 6743 int width, int height, 6744 float scale, Canvas canvas); 6745 private native void nativeDrawMatches(Canvas canvas); 6746 private native void nativeDrawSelectionPointer(Canvas content, 6747 float scale, int x, int y, boolean extendSelection); 6748 private native void nativeDrawSelectionRegion(Canvas content); 6749 private native void nativeDumpDisplayTree(String urlOrNull); 6750 private native int nativeFindAll(String findLower, String findUpper); 6751 private native void nativeFindNext(boolean forward); 6752 /* package */ native int nativeFocusCandidateFramePointer(); 6753 private native boolean nativeFocusCandidateIsPassword(); 6754 private native boolean nativeFocusCandidateIsRtlText(); 6755 private native boolean nativeFocusCandidateIsTextInput(); 6756 /* package */ native int nativeFocusCandidateMaxLength(); 6757 /* package */ native String nativeFocusCandidateName(); 6758 private native Rect nativeFocusCandidateNodeBounds(); 6759 private native int nativeFocusCandidatePointer(); 6760 private native String nativeFocusCandidateText(); 6761 private native int nativeFocusCandidateTextSize(); 6762 /** 6763 * Returns an integer corresponding to WebView.cpp::type. 6764 * See WebTextView.setType() 6765 */ 6766 private native int nativeFocusCandidateType(); 6767 private native boolean nativeFocusIsPlugin(); 6768 /* package */ native int nativeFocusNodePointer(); 6769 private native Rect nativeGetCursorRingBounds(); 6770 private native String nativeGetSelection(); 6771 private native boolean nativeHasCursorNode(); 6772 private native boolean nativeHasFocusNode(); 6773 private native void nativeHideCursor(); 6774 private native String nativeImageURI(int x, int y); 6775 private native void nativeInstrumentReport(); 6776 /* package */ native void nativeMoveCursorToNextTextInput(); 6777 // return true if the page has been scrolled 6778 private native boolean nativeMotionUp(int x, int y, int slop); 6779 // returns false if it handled the key 6780 private native boolean nativeMoveCursor(int keyCode, int count, 6781 boolean noScroll); 6782 private native int nativeMoveGeneration(); 6783 private native void nativeMoveSelection(int x, int y, 6784 boolean extendSelection); 6785 private native boolean nativePointInNavCache(int x, int y, int slop); 6786 // Like many other of our native methods, you must make sure that 6787 // mNativeClass is not null before calling this method. 6788 private native void nativeRecordButtons(boolean focused, 6789 boolean pressed, boolean invalidate); 6790 private native void nativeSelectBestAt(Rect rect); 6791 private native void nativeSetFindIsUp(); 6792 private native void nativeSetFollowedLink(boolean followed); 6793 private native void nativeSetHeightCanMeasure(boolean measure); 6794 private native int nativeTextGeneration(); 6795 // Never call this version except by updateCachedTextfield(String) - 6796 // we always want to pass in our generation number. 6797 private native void nativeUpdateCachedTextfield(String updatedText, 6798 int generation); 6799 // return NO_LEFTEDGE means failure. 6800 private static final int NO_LEFTEDGE = -1; 6801 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 6802} 6803