WebView.java revision ac6df2d0376aed28eb0dac9baba00497ae40bdfb
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.app.AlertDialog; 20import android.content.Context; 21import android.content.DialogInterface; 22import android.content.Intent; 23import android.content.DialogInterface.OnCancelListener; 24import android.content.pm.PackageManager; 25import android.database.DataSetObserver; 26import android.graphics.Bitmap; 27import android.graphics.Canvas; 28import android.graphics.Color; 29import android.graphics.Interpolator; 30import android.graphics.Picture; 31import android.graphics.Point; 32import android.graphics.Rect; 33import android.graphics.drawable.Drawable; 34import android.net.http.SslCertificate; 35import android.net.Uri; 36import android.os.Bundle; 37import android.os.Handler; 38import android.os.Message; 39import android.os.ServiceManager; 40import android.os.SystemClock; 41import android.text.IClipboard; 42import android.text.Selection; 43import android.text.Spannable; 44import android.util.AttributeSet; 45import android.util.EventLog; 46import android.util.Log; 47import android.util.TypedValue; 48import android.view.Gravity; 49import android.view.KeyEvent; 50import android.view.LayoutInflater; 51import android.view.MotionEvent; 52import android.view.ScaleGestureDetector; 53import android.view.SoundEffectConstants; 54import android.view.VelocityTracker; 55import android.view.View; 56import android.view.ViewConfiguration; 57import android.view.ViewGroup; 58import android.view.ViewTreeObserver; 59import android.view.animation.AlphaAnimation; 60import android.view.inputmethod.EditorInfo; 61import android.view.inputmethod.InputConnection; 62import android.view.inputmethod.InputMethodManager; 63import android.webkit.WebTextView.AutoCompleteAdapter; 64import android.webkit.WebViewCore.EventHub; 65import android.widget.AbsoluteLayout; 66import android.widget.Adapter; 67import android.widget.AdapterView; 68import android.widget.ArrayAdapter; 69import android.widget.CheckedTextView; 70import android.widget.FrameLayout; 71import android.widget.LinearLayout; 72import android.widget.ListView; 73import android.widget.Scroller; 74import android.widget.Toast; 75import android.widget.ZoomButtonsController; 76import android.widget.ZoomControls; 77import android.widget.AdapterView.OnItemClickListener; 78 79import java.io.File; 80import java.io.FileInputStream; 81import java.io.FileNotFoundException; 82import java.io.FileOutputStream; 83import java.io.IOException; 84import java.net.URLDecoder; 85import java.util.ArrayList; 86import java.util.List; 87import java.util.HashMap; 88import java.util.Map; 89 90import junit.framework.Assert; 91 92/** 93 * <p>A View that displays web pages. This class is the basis upon which you 94 * can roll your own web browser or simply display some online content within your Activity. 95 * It uses the WebKit rendering engine to display 96 * web pages and includes methods to navigate forward and backward 97 * through a history, zoom in and out, perform text searches and more.</p> 98 * <p>To enable the built-in zoom, set 99 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 100 * (introduced in API version 3). 101 * <p>Note that, in order for your Activity to access the Internet and load web pages 102 * in a WebView, you must add the <var>INTERNET</var> permissions to your 103 * Android Manifest file:</p> 104 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 105 * 106 * <p>This must be a child of the <code><manifest></code> element.</p> 107 * 108 * <h3>Basic usage</h3> 109 * 110 * <p>By default, a WebView provides no browser-like widgets, does not 111 * enable JavaScript and errors will be ignored. If your goal is only 112 * to display some HTML as a part of your UI, this is probably fine; 113 * the user won't need to interact with the web page beyond reading 114 * it, and the web page won't need to interact with the user. If you 115 * actually want a fully blown web browser, then you probably want to 116 * invoke the Browser application with your URL rather than show it 117 * with a WebView. See {@link android.content.Intent} for more information.</p> 118 * 119 * <pre class="prettyprint"> 120 * WebView webview = new WebView(this); 121 * setContentView(webview); 122 * 123 * // Simplest usage: note that an exception will NOT be thrown 124 * // if there is an error loading this page (see below). 125 * webview.loadUrl("http://slashdot.org/"); 126 * 127 * // Of course you can also load from any string: 128 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 129 * webview.loadData(summary, "text/html", "utf-8"); 130 * // ... although note that there are restrictions on what this HTML can do. 131 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 132 * </pre> 133 * 134 * <p>A WebView has several customization points where you can add your 135 * own behavior. These are:</p> 136 * 137 * <ul> 138 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 139 * This class is called when something that might impact a 140 * browser UI happens, for instance, progress updates and 141 * JavaScript alerts are sent here. 142 * </li> 143 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 144 * It will be called when things happen that impact the 145 * rendering of the content, eg, errors or form submissions. You 146 * can also intercept URL loading here.</li> 147 * <li>Via the {@link android.webkit.WebSettings} class, which contains 148 * miscellaneous configuration. </li> 149 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 150 * This lets you bind Java objects into the WebView so they can be 151 * controlled from the web pages JavaScript.</li> 152 * </ul> 153 * 154 * <p>Here's a more complicated example, showing error handling, 155 * settings, and progress notification:</p> 156 * 157 * <pre class="prettyprint"> 158 * // Let's display the progress in the activity title bar, like the 159 * // browser app does. 160 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 161 * 162 * webview.getSettings().setJavaScriptEnabled(true); 163 * 164 * final Activity activity = this; 165 * webview.setWebChromeClient(new WebChromeClient() { 166 * public void onProgressChanged(WebView view, int progress) { 167 * // Activities and WebViews measure progress with different scales. 168 * // The progress meter will automatically disappear when we reach 100% 169 * activity.setProgress(progress * 1000); 170 * } 171 * }); 172 * webview.setWebViewClient(new WebViewClient() { 173 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 174 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 175 * } 176 * }); 177 * 178 * webview.loadUrl("http://slashdot.org/"); 179 * </pre> 180 * 181 * <h3>Cookie and window management</h3> 182 * 183 * <p>For obvious security reasons, your application has its own 184 * cache, cookie store etc - it does not share the Browser 185 * applications data. Cookies are managed on a separate thread, so 186 * operations like index building don't block the UI 187 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 188 * if you want to use cookies in your application. 189 * </p> 190 * 191 * <p>By default, requests by the HTML to open new windows are 192 * ignored. This is true whether they be opened by JavaScript or by 193 * the target attribute on a link. You can customize your 194 * WebChromeClient to provide your own behaviour for opening multiple windows, 195 * and render them in whatever manner you want.</p> 196 * 197 * <p>Standard behavior for an Activity is to be destroyed and 198 * recreated when the devices orientation is changed. This will cause 199 * the WebView to reload the current page. If you don't want that, you 200 * can set your Activity to handle the orientation and keyboardHidden 201 * changes, and then just leave the WebView alone. It'll automatically 202 * re-orient itself as appropriate.</p> 203 */ 204public class WebView extends AbsoluteLayout 205 implements ViewTreeObserver.OnGlobalFocusChangeListener, 206 ViewGroup.OnHierarchyChangeListener { 207 208 // enable debug output for drag trackers 209 private static final boolean DEBUG_DRAG_TRACKER = false; 210 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 211 // the screen all-the-time. Good for profiling our drawing code 212 static private final boolean AUTO_REDRAW_HACK = false; 213 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 214 private boolean mAutoRedraw; 215 private int mRootLayer; // C++ pointer to the root layer 216 217 static final String LOGTAG = "webview"; 218 219 private static class ExtendedZoomControls extends FrameLayout { 220 public ExtendedZoomControls(Context context, AttributeSet attrs) { 221 super(context, attrs); 222 LayoutInflater inflater = (LayoutInflater) 223 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 224 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 225 mPlusMinusZoomControls = (ZoomControls) findViewById( 226 com.android.internal.R.id.zoomControls); 227 findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( 228 View.GONE); 229 } 230 231 public void show(boolean showZoom, boolean canZoomOut) { 232 mPlusMinusZoomControls.setVisibility( 233 showZoom ? View.VISIBLE : View.GONE); 234 fade(View.VISIBLE, 0.0f, 1.0f); 235 } 236 237 public void hide() { 238 fade(View.GONE, 1.0f, 0.0f); 239 } 240 241 private void fade(int visibility, float startAlpha, float endAlpha) { 242 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 243 anim.setDuration(500); 244 startAnimation(anim); 245 setVisibility(visibility); 246 } 247 248 public boolean hasFocus() { 249 return mPlusMinusZoomControls.hasFocus(); 250 } 251 252 public void setOnZoomInClickListener(OnClickListener listener) { 253 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 254 } 255 256 public void setOnZoomOutClickListener(OnClickListener listener) { 257 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 258 } 259 260 ZoomControls mPlusMinusZoomControls; 261 } 262 263 /** 264 * Transportation object for returning WebView across thread boundaries. 265 */ 266 public class WebViewTransport { 267 private WebView mWebview; 268 269 /** 270 * Set the WebView to the transportation object. 271 * @param webview The WebView to transport. 272 */ 273 public synchronized void setWebView(WebView webview) { 274 mWebview = webview; 275 } 276 277 /** 278 * Return the WebView object. 279 * @return WebView The transported WebView object. 280 */ 281 public synchronized WebView getWebView() { 282 return mWebview; 283 } 284 } 285 286 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 287 private final CallbackProxy mCallbackProxy; 288 289 private final WebViewDatabase mDatabase; 290 291 // SSL certificate for the main top-level page (if secure) 292 private SslCertificate mCertificate; 293 294 // Native WebView pointer that is 0 until the native object has been 295 // created. 296 private int mNativeClass; 297 // This would be final but it needs to be set to null when the WebView is 298 // destroyed. 299 private WebViewCore mWebViewCore; 300 // Handler for dispatching UI messages. 301 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 302 private WebTextView mWebTextView; 303 // Used to ignore changes to webkit text that arrives to the UI side after 304 // more key events. 305 private int mTextGeneration; 306 307 // Used by WebViewCore to create child views. 308 /* package */ final ViewManager mViewManager; 309 310 // Used to display in full screen mode 311 PluginFullScreenHolder mFullScreenHolder; 312 313 /** 314 * Position of the last touch event. 315 */ 316 private float mLastTouchX; 317 private float mLastTouchY; 318 319 /** 320 * Time of the last touch event. 321 */ 322 private long mLastTouchTime; 323 324 /** 325 * Time of the last time sending touch event to WebViewCore 326 */ 327 private long mLastSentTouchTime; 328 329 /** 330 * The minimum elapsed time before sending another ACTION_MOVE event to 331 * WebViewCore. This really should be tuned for each type of the devices. 332 * For example in Google Map api test case, it takes Dream device at least 333 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 334 * triggering the layout and drawing the picture. While the same process 335 * takes 60+ms on the current high speed device. If we make 336 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 337 * to WebViewCore queue and the real layout and draw events will be pushed 338 * to further, which slows down the refresh rate. Choose 50 to favor the 339 * current high speed devices. For Dream like devices, 100 is a better 340 * choice. Maybe make this in the buildspec later. 341 */ 342 private static final int TOUCH_SENT_INTERVAL = 50; 343 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 344 345 /** 346 * Helper class to get velocity for fling 347 */ 348 VelocityTracker mVelocityTracker; 349 private int mMaximumFling; 350 private float mLastVelocity; 351 private float mLastVelX; 352 private float mLastVelY; 353 354 /** 355 * Touch mode 356 */ 357 private int mTouchMode = TOUCH_DONE_MODE; 358 private static final int TOUCH_INIT_MODE = 1; 359 private static final int TOUCH_DRAG_START_MODE = 2; 360 private static final int TOUCH_DRAG_MODE = 3; 361 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 362 private static final int TOUCH_SHORTPRESS_MODE = 5; 363 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 364 private static final int TOUCH_DONE_MODE = 7; 365 private static final int TOUCH_SELECT_MODE = 8; 366 private static final int TOUCH_PINCH_DRAG = 9; 367 368 // Whether to forward the touch events to WebCore 369 private boolean mForwardTouchEvents = false; 370 371 // Whether to prevent drag during touch. The initial value depends on 372 // mForwardTouchEvents. If WebCore wants touch events, we assume it will 373 // take control of touch events unless it says no for touch down event. 374 private static final int PREVENT_DRAG_NO = 0; 375 private static final int PREVENT_DRAG_MAYBE_YES = 1; 376 private static final int PREVENT_DRAG_YES = 2; 377 private int mPreventDrag = PREVENT_DRAG_NO; 378 379 // by default mPreventLongPress is false. If it is true, long press event 380 // will be handled by WebKit instead of UI. 381 private boolean mPreventLongPress = false; 382 // by default mPreventDoubleTap is false. If it is true, double tap event 383 // will be handled by WebKit instead of UI. 384 private boolean mPreventDoubleTap = false; 385 386 // this needs to be in sync with the logic in WebKit's 387 // EventHandler::handleTouchEvent() 388 private static final int TOUCH_PREVENT_DRAG = 0x1; 389 private static final int TOUCH_PREVENT_LONGPRESS = 0x2; 390 private static final int TOUCH_PREVENT_DOUBLETAP = 0x4; 391 392 // To keep track of whether the current drag was initiated by a WebTextView, 393 // so that we know not to hide the cursor 394 boolean mDragFromTextInput; 395 396 // Whether or not to draw the cursor ring. 397 private boolean mDrawCursorRing = true; 398 399 // true if onPause has been called (and not onResume) 400 private boolean mIsPaused; 401 402 /** 403 * Customizable constant 404 */ 405 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 406 private int mTouchSlopSquare; 407 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 408 private int mDoubleTapSlopSquare; 409 // pre-computed density adjusted navigation slop 410 private int mNavSlop; 411 // This should be ViewConfiguration.getTapTimeout() 412 // But system time out is 100ms, which is too short for the browser. 413 // In the browser, if it switches out of tap too soon, jump tap won't work. 414 private static final int TAP_TIMEOUT = 200; 415 // This should be ViewConfiguration.getLongPressTimeout() 416 // But system time out is 500ms, which is too short for the browser. 417 // With a short timeout, it's difficult to treat trigger a short press. 418 private static final int LONG_PRESS_TIMEOUT = 1000; 419 // needed to avoid flinging after a pause of no movement 420 private static final int MIN_FLING_TIME = 250; 421 // draw unfiltered after drag is held without movement 422 private static final int MOTIONLESS_TIME = 100; 423 // The time that the Zoom Controls are visible before fading away 424 private static final long ZOOM_CONTROLS_TIMEOUT = 425 ViewConfiguration.getZoomControlsTimeout(); 426 // The amount of content to overlap between two screens when going through 427 // pages with the space bar, in pixels. 428 private static final int PAGE_SCROLL_OVERLAP = 24; 429 430 /** 431 * These prevent calling requestLayout if either dimension is fixed. This 432 * depends on the layout parameters and the measure specs. 433 */ 434 boolean mWidthCanMeasure; 435 boolean mHeightCanMeasure; 436 437 // Remember the last dimensions we sent to the native side so we can avoid 438 // sending the same dimensions more than once. 439 int mLastWidthSent; 440 int mLastHeightSent; 441 442 private int mContentWidth; // cache of value from WebViewCore 443 private int mContentHeight; // cache of value from WebViewCore 444 445 // Need to have the separate control for horizontal and vertical scrollbar 446 // style than the View's single scrollbar style 447 private boolean mOverlayHorizontalScrollbar = true; 448 private boolean mOverlayVerticalScrollbar = false; 449 450 // our standard speed. this way small distances will be traversed in less 451 // time than large distances, but we cap the duration, so that very large 452 // distances won't take too long to get there. 453 private static final int STD_SPEED = 480; // pixels per second 454 // time for the longest scroll animation 455 private static final int MAX_DURATION = 750; // milliseconds 456 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 457 private Scroller mScroller; 458 459 private boolean mWrapContent; 460 private static final int MOTIONLESS_FALSE = 0; 461 private static final int MOTIONLESS_PENDING = 1; 462 private static final int MOTIONLESS_TRUE = 2; 463 private int mHeldMotionless; 464 465 // whether support multi-touch 466 private boolean mSupportMultiTouch; 467 // use the framework's ScaleGestureDetector to handle multi-touch 468 private ScaleGestureDetector mScaleDetector; 469 // minimum scale change during multi-touch zoom 470 private static float PREVIEW_SCALE_INCREMENT = 0.01f; 471 472 // the anchor point in the document space where VIEW_SIZE_CHANGED should 473 // apply to 474 private int mAnchorX; 475 private int mAnchorY; 476 477 /** 478 * Private message ids 479 */ 480 private static final int REMEMBER_PASSWORD = 1; 481 private static final int NEVER_REMEMBER_PASSWORD = 2; 482 private static final int SWITCH_TO_SHORTPRESS = 3; 483 private static final int SWITCH_TO_LONGPRESS = 4; 484 private static final int RELEASE_SINGLE_TAP = 5; 485 private static final int REQUEST_FORM_DATA = 6; 486 private static final int RESUME_WEBCORE_PRIORITY = 7; 487 private static final int DRAG_HELD_MOTIONLESS = 8; 488 private static final int AWAKEN_SCROLL_BARS = 9; 489 490 //! arg1=x, arg2=y 491 static final int SCROLL_TO_MSG_ID = 10; 492 static final int SCROLL_BY_MSG_ID = 11; 493 //! arg1=x, arg2=y 494 static final int SPAWN_SCROLL_TO_MSG_ID = 12; 495 //! arg1=x, arg2=y 496 static final int SYNC_SCROLL_TO_MSG_ID = 13; 497 static final int NEW_PICTURE_MSG_ID = 14; 498 static final int UPDATE_TEXT_ENTRY_MSG_ID = 15; 499 static final int WEBCORE_INITIALIZED_MSG_ID = 16; 500 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 17; 501 static final int UPDATE_ZOOM_RANGE = 18; 502 static final int MOVE_OUT_OF_PLUGIN = 19; 503 static final int CLEAR_TEXT_ENTRY = 20; 504 static final int UPDATE_TEXT_SELECTION_MSG_ID = 21; 505 static final int SHOW_RECT_MSG_ID = 22; 506 static final int LONG_PRESS_CENTER = 23; 507 static final int PREVENT_TOUCH_ID = 24; 508 static final int WEBCORE_NEED_TOUCH_EVENTS = 25; 509 // obj=Rect in doc coordinates 510 static final int INVAL_RECT_MSG_ID = 26; 511 static final int REQUEST_KEYBOARD = 27; 512 static final int DO_MOTION_UP = 28; 513 static final int SHOW_FULLSCREEN = 29; 514 static final int HIDE_FULLSCREEN = 30; 515 static final int DOM_FOCUS_CHANGED = 31; 516 static final int IMMEDIATE_REPAINT_MSG_ID = 32; 517 static final int SET_ROOT_LAYER_MSG_ID = 33; 518 static final int RETURN_LABEL = 34; 519 static final int FIND_AGAIN = 35; 520 521 static final String[] HandlerDebugString = { 522 "REMEMBER_PASSWORD", // = 1; 523 "NEVER_REMEMBER_PASSWORD", // = 2; 524 "SWITCH_TO_SHORTPRESS", // = 3; 525 "SWITCH_TO_LONGPRESS", // = 4; 526 "RELEASE_SINGLE_TAP", // = 5; 527 "REQUEST_FORM_DATA", // = 6; 528 "RESUME_WEBCORE_PRIORITY", // = 7; 529 "DRAG_HELD_MOTIONLESS", // = 8; 530 "AWAKEN_SCROLL_BARS", // = 9; 531 "SCROLL_TO_MSG_ID", // = 10; 532 "SCROLL_BY_MSG_ID", // = 11; 533 "SPAWN_SCROLL_TO_MSG_ID", // = 12; 534 "SYNC_SCROLL_TO_MSG_ID", // = 13; 535 "NEW_PICTURE_MSG_ID", // = 14; 536 "UPDATE_TEXT_ENTRY_MSG_ID", // = 15; 537 "WEBCORE_INITIALIZED_MSG_ID", // = 16; 538 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 17; 539 "UPDATE_ZOOM_RANGE", // = 18; 540 "MOVE_OUT_OF_PLUGIN", // = 19; 541 "CLEAR_TEXT_ENTRY", // = 20; 542 "UPDATE_TEXT_SELECTION_MSG_ID", // = 21; 543 "SHOW_RECT_MSG_ID", // = 22; 544 "LONG_PRESS_CENTER", // = 23; 545 "PREVENT_TOUCH_ID", // = 24; 546 "WEBCORE_NEED_TOUCH_EVENTS", // = 25; 547 "INVAL_RECT_MSG_ID", // = 26; 548 "REQUEST_KEYBOARD", // = 27; 549 "DO_MOTION_UP", // = 28; 550 "SHOW_FULLSCREEN", // = 29; 551 "HIDE_FULLSCREEN", // = 30; 552 "DOM_FOCUS_CHANGED", // = 31; 553 "IMMEDIATE_REPAINT_MSG_ID", // = 32; 554 "SET_ROOT_LAYER_MSG_ID", // = 33; 555 "RETURN_LABEL", // = 34; 556 "FIND_AGAIN" // = 35; 557 }; 558 559 // If the site doesn't use the viewport meta tag to specify the viewport, 560 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 561 static final int DEFAULT_VIEWPORT_WIDTH = 800; 562 563 // normally we try to fit the content to the minimum preferred width 564 // calculated by the Webkit. To avoid the bad behavior when some site's 565 // minimum preferred width keeps growing when changing the viewport width or 566 // the minimum preferred width is huge, an upper limit is needed. 567 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 568 569 // default scale limit. Depending on the display density 570 private static float DEFAULT_MAX_ZOOM_SCALE; 571 private static float DEFAULT_MIN_ZOOM_SCALE; 572 // scale limit, which can be set through viewport meta tag in the web page 573 private float mMaxZoomScale; 574 private float mMinZoomScale; 575 private boolean mMinZoomScaleFixed = true; 576 577 // initial scale in percent. 0 means using default. 578 private int mInitialScaleInPercent = 0; 579 580 // while in the zoom overview mode, the page's width is fully fit to the 581 // current window. The page is alive, in another words, you can click to 582 // follow the links. Double tap will toggle between zoom overview mode and 583 // the last zoom scale. 584 boolean mInZoomOverview = false; 585 586 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 587 // engadget always have wider mContentWidth no matter what viewport size is. 588 int mZoomOverviewWidth = DEFAULT_VIEWPORT_WIDTH; 589 float mTextWrapScale; 590 591 // default scale. Depending on the display density. 592 static int DEFAULT_SCALE_PERCENT; 593 private float mDefaultScale; 594 595 // set to true temporarily during ScaleGesture triggered zoom 596 private boolean mPreviewZoomOnly = false; 597 598 // computed scale and inverse, from mZoomWidth. 599 private float mActualScale; 600 private float mInvActualScale; 601 // if this is non-zero, it is used on drawing rather than mActualScale 602 private float mZoomScale; 603 private float mInvInitialZoomScale; 604 private float mInvFinalZoomScale; 605 private int mInitialScrollX; 606 private int mInitialScrollY; 607 private long mZoomStart; 608 private static final int ZOOM_ANIMATION_LENGTH = 500; 609 610 private boolean mUserScroll = false; 611 612 private int mSnapScrollMode = SNAP_NONE; 613 private static final int SNAP_NONE = 0; 614 private static final int SNAP_LOCK = 1; // not a separate state 615 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 616 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 617 private boolean mSnapPositive; 618 619 // Used to match key downs and key ups 620 private boolean mGotKeyDown; 621 622 /* package */ static boolean mLogEvent = true; 623 624 // for event log 625 private long mLastTouchUpTime = 0; 626 627 /** 628 * URI scheme for telephone number 629 */ 630 public static final String SCHEME_TEL = "tel:"; 631 /** 632 * URI scheme for email address 633 */ 634 public static final String SCHEME_MAILTO = "mailto:"; 635 /** 636 * URI scheme for map address 637 */ 638 public static final String SCHEME_GEO = "geo:0,0?q="; 639 640 private int mBackgroundColor = Color.WHITE; 641 642 // Used to notify listeners of a new picture. 643 private PictureListener mPictureListener; 644 /** 645 * Interface to listen for new pictures as they change. 646 */ 647 public interface PictureListener { 648 /** 649 * Notify the listener that the picture has changed. 650 * @param view The WebView that owns the picture. 651 * @param picture The new picture. 652 */ 653 public void onNewPicture(WebView view, Picture picture); 654 } 655 656 // FIXME: Want to make this public, but need to change the API file. 657 public /*static*/ class HitTestResult { 658 /** 659 * Default HitTestResult, where the target is unknown 660 */ 661 public static final int UNKNOWN_TYPE = 0; 662 /** 663 * HitTestResult for hitting a HTML::a tag 664 */ 665 public static final int ANCHOR_TYPE = 1; 666 /** 667 * HitTestResult for hitting a phone number 668 */ 669 public static final int PHONE_TYPE = 2; 670 /** 671 * HitTestResult for hitting a map address 672 */ 673 public static final int GEO_TYPE = 3; 674 /** 675 * HitTestResult for hitting an email address 676 */ 677 public static final int EMAIL_TYPE = 4; 678 /** 679 * HitTestResult for hitting an HTML::img tag 680 */ 681 public static final int IMAGE_TYPE = 5; 682 /** 683 * HitTestResult for hitting a HTML::a tag which contains HTML::img 684 */ 685 public static final int IMAGE_ANCHOR_TYPE = 6; 686 /** 687 * HitTestResult for hitting a HTML::a tag with src=http 688 */ 689 public static final int SRC_ANCHOR_TYPE = 7; 690 /** 691 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 692 */ 693 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 694 /** 695 * HitTestResult for hitting an edit text area 696 */ 697 public static final int EDIT_TEXT_TYPE = 9; 698 699 private int mType; 700 private String mExtra; 701 702 HitTestResult() { 703 mType = UNKNOWN_TYPE; 704 } 705 706 private void setType(int type) { 707 mType = type; 708 } 709 710 private void setExtra(String extra) { 711 mExtra = extra; 712 } 713 714 public int getType() { 715 return mType; 716 } 717 718 public String getExtra() { 719 return mExtra; 720 } 721 } 722 723 // The View containing the zoom controls 724 private ExtendedZoomControls mZoomControls; 725 private Runnable mZoomControlRunnable; 726 727 private ZoomButtonsController mZoomButtonsController; 728 729 // These keep track of the center point of the zoom. They are used to 730 // determine the point around which we should zoom. 731 private float mZoomCenterX; 732 private float mZoomCenterY; 733 734 private ZoomButtonsController.OnZoomListener mZoomListener = 735 new ZoomButtonsController.OnZoomListener() { 736 737 public void onVisibilityChanged(boolean visible) { 738 if (visible) { 739 switchOutDrawHistory(); 740 // Bring back the hidden zoom controls. 741 mZoomButtonsController.getZoomControls().setVisibility( 742 View.VISIBLE); 743 updateZoomButtonsEnabled(); 744 } 745 } 746 747 public void onZoom(boolean zoomIn) { 748 if (zoomIn) { 749 zoomIn(); 750 } else { 751 zoomOut(); 752 } 753 754 updateZoomButtonsEnabled(); 755 } 756 }; 757 758 /** 759 * Construct a new WebView with a Context object. 760 * @param context A Context object used to access application assets. 761 */ 762 public WebView(Context context) { 763 this(context, null); 764 } 765 766 /** 767 * Construct a new WebView with layout parameters. 768 * @param context A Context object used to access application assets. 769 * @param attrs An AttributeSet passed to our parent. 770 */ 771 public WebView(Context context, AttributeSet attrs) { 772 this(context, attrs, com.android.internal.R.attr.webViewStyle); 773 } 774 775 /** 776 * Construct a new WebView with layout parameters and a default style. 777 * @param context A Context object used to access application assets. 778 * @param attrs An AttributeSet passed to our parent. 779 * @param defStyle The default style resource ID. 780 */ 781 public WebView(Context context, AttributeSet attrs, int defStyle) { 782 this(context, attrs, defStyle, null); 783 } 784 785 /** 786 * Construct a new WebView with layout parameters, a default style and a set 787 * of custom Javscript interfaces to be added to the WebView at initialization 788 * time. This guarantees that these interfaces will be available when the JS 789 * context is initialized. 790 * @param context A Context object used to access application assets. 791 * @param attrs An AttributeSet passed to our parent. 792 * @param defStyle The default style resource ID. 793 * @param javascriptInterfaces is a Map of intareface names, as keys, and 794 * object implementing those interfaces, as values. 795 * @hide pending API council approval. 796 */ 797 protected WebView(Context context, AttributeSet attrs, int defStyle, 798 Map<String, Object> javascriptInterfaces) { 799 super(context, attrs, defStyle); 800 init(); 801 802 mCallbackProxy = new CallbackProxy(context, this); 803 mViewManager = new ViewManager(this); 804 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 805 mDatabase = WebViewDatabase.getInstance(context); 806 mScroller = new Scroller(context); 807 808 mZoomButtonsController = new ZoomButtonsController(this); 809 mZoomButtonsController.setOnZoomListener(mZoomListener); 810 // ZoomButtonsController positions the buttons at the bottom, but in 811 // the middle. Change their layout parameters so they appear on the 812 // right. 813 View controls = mZoomButtonsController.getZoomControls(); 814 ViewGroup.LayoutParams params = controls.getLayoutParams(); 815 if (params instanceof FrameLayout.LayoutParams) { 816 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 817 params; 818 frameParams.gravity = Gravity.RIGHT; 819 } 820 updateMultiTouchSupport(context); 821 } 822 823 void updateMultiTouchSupport(Context context) { 824 WebSettings settings = getSettings(); 825 mSupportMultiTouch = context.getPackageManager().hasSystemFeature( 826 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 827 && settings.supportZoom() && settings.getBuiltInZoomControls(); 828 if (mSupportMultiTouch && (mScaleDetector == null)) { 829 mScaleDetector = new ScaleGestureDetector(context, 830 new ScaleDetectorListener()); 831 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 832 mScaleDetector = null; 833 } 834 } 835 836 private void updateZoomButtonsEnabled() { 837 boolean canZoomIn = mActualScale < mMaxZoomScale; 838 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 839 if (!canZoomIn && !canZoomOut) { 840 // Hide the zoom in and out buttons, as well as the fit to page 841 // button, if the page cannot zoom 842 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 843 } else { 844 // Set each one individually, as a page may be able to zoom in 845 // or out. 846 mZoomButtonsController.setZoomInEnabled(canZoomIn); 847 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 848 } 849 } 850 851 private void init() { 852 setWillNotDraw(false); 853 setFocusable(true); 854 setFocusableInTouchMode(true); 855 setClickable(true); 856 setLongClickable(true); 857 858 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 859 int slop = configuration.getScaledTouchSlop(); 860 mTouchSlopSquare = slop * slop; 861 mMinLockSnapReverseDistance = slop; 862 slop = configuration.getScaledDoubleTapSlop(); 863 mDoubleTapSlopSquare = slop * slop; 864 final float density = getContext().getResources().getDisplayMetrics().density; 865 // use one line height, 16 based on our current default font, for how 866 // far we allow a touch be away from the edge of a link 867 mNavSlop = (int) (16 * density); 868 // density adjusted scale factors 869 DEFAULT_SCALE_PERCENT = (int) (100 * density); 870 mDefaultScale = density; 871 mActualScale = density; 872 mInvActualScale = 1 / density; 873 mTextWrapScale = density; 874 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 875 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 876 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 877 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 878 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 879 } 880 881 /* package */void updateDefaultZoomDensity(int zoomDensity) { 882 final float density = getContext().getResources().getDisplayMetrics().density 883 * 100 / zoomDensity; 884 if (Math.abs(density - mDefaultScale) > 0.01) { 885 float scaleFactor = density / mDefaultScale; 886 // adjust the limits 887 mNavSlop = (int) (16 * density); 888 DEFAULT_SCALE_PERCENT = (int) (100 * density); 889 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 890 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 891 mDefaultScale = density; 892 mMaxZoomScale *= scaleFactor; 893 mMinZoomScale *= scaleFactor; 894 setNewZoomScale(mActualScale * scaleFactor, true, false); 895 } 896 } 897 898 /* package */ boolean onSavePassword(String schemePlusHost, String username, 899 String password, final Message resumeMsg) { 900 boolean rVal = false; 901 if (resumeMsg == null) { 902 // null resumeMsg implies saving password silently 903 mDatabase.setUsernamePassword(schemePlusHost, username, password); 904 } else { 905 final Message remember = mPrivateHandler.obtainMessage( 906 REMEMBER_PASSWORD); 907 remember.getData().putString("host", schemePlusHost); 908 remember.getData().putString("username", username); 909 remember.getData().putString("password", password); 910 remember.obj = resumeMsg; 911 912 final Message neverRemember = mPrivateHandler.obtainMessage( 913 NEVER_REMEMBER_PASSWORD); 914 neverRemember.getData().putString("host", schemePlusHost); 915 neverRemember.getData().putString("username", username); 916 neverRemember.getData().putString("password", password); 917 neverRemember.obj = resumeMsg; 918 919 new AlertDialog.Builder(getContext()) 920 .setTitle(com.android.internal.R.string.save_password_label) 921 .setMessage(com.android.internal.R.string.save_password_message) 922 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 923 new DialogInterface.OnClickListener() { 924 public void onClick(DialogInterface dialog, int which) { 925 resumeMsg.sendToTarget(); 926 } 927 }) 928 .setNeutralButton(com.android.internal.R.string.save_password_remember, 929 new DialogInterface.OnClickListener() { 930 public void onClick(DialogInterface dialog, int which) { 931 remember.sendToTarget(); 932 } 933 }) 934 .setNegativeButton(com.android.internal.R.string.save_password_never, 935 new DialogInterface.OnClickListener() { 936 public void onClick(DialogInterface dialog, int which) { 937 neverRemember.sendToTarget(); 938 } 939 }) 940 .setOnCancelListener(new OnCancelListener() { 941 public void onCancel(DialogInterface dialog) { 942 resumeMsg.sendToTarget(); 943 } 944 }).show(); 945 // Return true so that WebViewCore will pause while the dialog is 946 // up. 947 rVal = true; 948 } 949 return rVal; 950 } 951 952 @Override 953 public void setScrollBarStyle(int style) { 954 if (style == View.SCROLLBARS_INSIDE_INSET 955 || style == View.SCROLLBARS_OUTSIDE_INSET) { 956 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 957 } else { 958 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 959 } 960 super.setScrollBarStyle(style); 961 } 962 963 /** 964 * Specify whether the horizontal scrollbar has overlay style. 965 * @param overlay TRUE if horizontal scrollbar should have overlay style. 966 */ 967 public void setHorizontalScrollbarOverlay(boolean overlay) { 968 mOverlayHorizontalScrollbar = overlay; 969 } 970 971 /** 972 * Specify whether the vertical scrollbar has overlay style. 973 * @param overlay TRUE if vertical scrollbar should have overlay style. 974 */ 975 public void setVerticalScrollbarOverlay(boolean overlay) { 976 mOverlayVerticalScrollbar = overlay; 977 } 978 979 /** 980 * Return whether horizontal scrollbar has overlay style 981 * @return TRUE if horizontal scrollbar has overlay style. 982 */ 983 public boolean overlayHorizontalScrollbar() { 984 return mOverlayHorizontalScrollbar; 985 } 986 987 /** 988 * Return whether vertical scrollbar has overlay style 989 * @return TRUE if vertical scrollbar has overlay style. 990 */ 991 public boolean overlayVerticalScrollbar() { 992 return mOverlayVerticalScrollbar; 993 } 994 995 /* 996 * Return the width of the view where the content of WebView should render 997 * to. 998 * Note: this can be called from WebCoreThread. 999 */ 1000 /* package */ int getViewWidth() { 1001 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1002 return getWidth(); 1003 } else { 1004 return getWidth() - getVerticalScrollbarWidth(); 1005 } 1006 } 1007 1008 /* 1009 * returns the height of the titlebarview (if any). Does not care about 1010 * scrolling 1011 */ 1012 private int getTitleHeight() { 1013 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1014 } 1015 1016 /* 1017 * Return the amount of the titlebarview (if any) that is visible 1018 */ 1019 private int getVisibleTitleHeight() { 1020 return Math.max(getTitleHeight() - mScrollY, 0); 1021 } 1022 1023 /* 1024 * Return the height of the view where the content of WebView should render 1025 * to. Note that this excludes mTitleBar, if there is one. 1026 * Note: this can be called from WebCoreThread. 1027 */ 1028 /* package */ int getViewHeight() { 1029 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1030 } 1031 1032 private int getViewHeightWithTitle() { 1033 int height = getHeight(); 1034 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1035 height -= getHorizontalScrollbarHeight(); 1036 } 1037 return height; 1038 } 1039 1040 /** 1041 * @return The SSL certificate for the main top-level page or null if 1042 * there is no certificate (the site is not secure). 1043 */ 1044 public SslCertificate getCertificate() { 1045 return mCertificate; 1046 } 1047 1048 /** 1049 * Sets the SSL certificate for the main top-level page. 1050 */ 1051 public void setCertificate(SslCertificate certificate) { 1052 // here, the certificate can be null (if the site is not secure) 1053 mCertificate = certificate; 1054 } 1055 1056 //------------------------------------------------------------------------- 1057 // Methods called by activity 1058 //------------------------------------------------------------------------- 1059 1060 /** 1061 * Save the username and password for a particular host in the WebView's 1062 * internal database. 1063 * @param host The host that required the credentials. 1064 * @param username The username for the given host. 1065 * @param password The password for the given host. 1066 */ 1067 public void savePassword(String host, String username, String password) { 1068 mDatabase.setUsernamePassword(host, username, password); 1069 } 1070 1071 /** 1072 * Set the HTTP authentication credentials for a given host and realm. 1073 * 1074 * @param host The host for the credentials. 1075 * @param realm The realm for the credentials. 1076 * @param username The username for the password. If it is null, it means 1077 * password can't be saved. 1078 * @param password The password 1079 */ 1080 public void setHttpAuthUsernamePassword(String host, String realm, 1081 String username, String password) { 1082 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1083 } 1084 1085 /** 1086 * Retrieve the HTTP authentication username and password for a given 1087 * host & realm pair 1088 * 1089 * @param host The host for which the credentials apply. 1090 * @param realm The realm for which the credentials apply. 1091 * @return String[] if found, String[0] is username, which can be null and 1092 * String[1] is password. Return null if it can't find anything. 1093 */ 1094 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1095 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1096 } 1097 1098 /** 1099 * Destroy the internal state of the WebView. This method should be called 1100 * after the WebView has been removed from the view system. No other 1101 * methods may be called on a WebView after destroy. 1102 */ 1103 public void destroy() { 1104 clearTextEntry(); 1105 if (mWebViewCore != null) { 1106 // Set the handlers to null before destroying WebViewCore so no 1107 // more messages will be posted. 1108 mCallbackProxy.setWebViewClient(null); 1109 mCallbackProxy.setWebChromeClient(null); 1110 // Tell WebViewCore to destroy itself 1111 WebViewCore webViewCore = mWebViewCore; 1112 mWebViewCore = null; // prevent using partial webViewCore 1113 webViewCore.destroy(); 1114 // Remove any pending messages that might not be serviced yet. 1115 mPrivateHandler.removeCallbacksAndMessages(null); 1116 mCallbackProxy.removeCallbacksAndMessages(null); 1117 // Wake up the WebCore thread just in case it is waiting for a 1118 // javascript dialog. 1119 synchronized (mCallbackProxy) { 1120 mCallbackProxy.notify(); 1121 } 1122 } 1123 if (mNativeClass != 0) { 1124 nativeDestroy(); 1125 mNativeClass = 0; 1126 } 1127 } 1128 1129 /** 1130 * Enables platform notifications of data state and proxy changes. 1131 */ 1132 public static void enablePlatformNotifications() { 1133 Network.enablePlatformNotifications(); 1134 } 1135 1136 /** 1137 * If platform notifications are enabled, this should be called 1138 * from the Activity's onPause() or onStop(). 1139 */ 1140 public static void disablePlatformNotifications() { 1141 Network.disablePlatformNotifications(); 1142 } 1143 1144 /** 1145 * Sets JavaScript engine flags. 1146 * 1147 * @param flags JS engine flags in a String 1148 * 1149 * @hide pending API solidification 1150 */ 1151 public void setJsFlags(String flags) { 1152 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1153 } 1154 1155 /** 1156 * Inform WebView of the network state. This is used to set 1157 * the javascript property window.navigator.isOnline and 1158 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1159 * @param networkUp boolean indicating if network is available 1160 */ 1161 public void setNetworkAvailable(boolean networkUp) { 1162 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1163 networkUp ? 1 : 0, 0); 1164 } 1165 1166 /** 1167 * Inform WebView about the current network type. 1168 * {@hide} 1169 */ 1170 public void setNetworkType(String type, String subtype) { 1171 Map<String, String> map = new HashMap<String, String>(); 1172 map.put("type", type); 1173 map.put("subtype", subtype); 1174 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1175 } 1176 /** 1177 * Save the state of this WebView used in 1178 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1179 * method no longer stores the display data for this WebView. The previous 1180 * behavior could potentially leak files if {@link #restoreState} was never 1181 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1182 * and restoring the display data. 1183 * @param outState The Bundle to store the WebView state. 1184 * @return The same copy of the back/forward list used to save the state. If 1185 * saveState fails, the returned list will be null. 1186 * @see #savePicture 1187 * @see #restorePicture 1188 */ 1189 public WebBackForwardList saveState(Bundle outState) { 1190 if (outState == null) { 1191 return null; 1192 } 1193 // We grab a copy of the back/forward list because a client of WebView 1194 // may have invalidated the history list by calling clearHistory. 1195 WebBackForwardList list = copyBackForwardList(); 1196 final int currentIndex = list.getCurrentIndex(); 1197 final int size = list.getSize(); 1198 // We should fail saving the state if the list is empty or the index is 1199 // not in a valid range. 1200 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1201 return null; 1202 } 1203 outState.putInt("index", currentIndex); 1204 // FIXME: This should just be a byte[][] instead of ArrayList but 1205 // Parcel.java does not have the code to handle multi-dimensional 1206 // arrays. 1207 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1208 for (int i = 0; i < size; i++) { 1209 WebHistoryItem item = list.getItemAtIndex(i); 1210 if (null == item) { 1211 // FIXME: this shouldn't happen 1212 // need to determine how item got set to null 1213 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1214 return null; 1215 } 1216 byte[] data = item.getFlattenedData(); 1217 if (data == null) { 1218 // It would be very odd to not have any data for a given history 1219 // item. And we will fail to rebuild the history list without 1220 // flattened data. 1221 return null; 1222 } 1223 history.add(data); 1224 } 1225 outState.putSerializable("history", history); 1226 if (mCertificate != null) { 1227 outState.putBundle("certificate", 1228 SslCertificate.saveState(mCertificate)); 1229 } 1230 return list; 1231 } 1232 1233 /** 1234 * Save the current display data to the Bundle given. Used in conjunction 1235 * with {@link #saveState}. 1236 * @param b A Bundle to store the display data. 1237 * @param dest The file to store the serialized picture data. Will be 1238 * overwritten with this WebView's picture data. 1239 * @return True if the picture was successfully saved. 1240 */ 1241 public boolean savePicture(Bundle b, File dest) { 1242 if (dest == null || b == null) { 1243 return false; 1244 } 1245 final Picture p = capturePicture(); 1246 try { 1247 final FileOutputStream out = new FileOutputStream(dest); 1248 p.writeToStream(out); 1249 out.close(); 1250 } catch (FileNotFoundException e){ 1251 e.printStackTrace(); 1252 } catch (IOException e) { 1253 e.printStackTrace(); 1254 } catch (RuntimeException e) { 1255 e.printStackTrace(); 1256 } 1257 if (dest.length() > 0) { 1258 b.putInt("scrollX", mScrollX); 1259 b.putInt("scrollY", mScrollY); 1260 b.putFloat("scale", mActualScale); 1261 b.putFloat("textwrapScale", mTextWrapScale); 1262 b.putBoolean("overview", mInZoomOverview); 1263 return true; 1264 } 1265 return false; 1266 } 1267 1268 /** 1269 * Restore the display data that was save in {@link #savePicture}. Used in 1270 * conjunction with {@link #restoreState}. 1271 * @param b A Bundle containing the saved display data. 1272 * @param src The file where the picture data was stored. 1273 * @return True if the picture was successfully restored. 1274 */ 1275 public boolean restorePicture(Bundle b, File src) { 1276 if (src == null || b == null) { 1277 return false; 1278 } 1279 if (src.exists()) { 1280 Picture p = null; 1281 try { 1282 final FileInputStream in = new FileInputStream(src); 1283 p = Picture.createFromStream(in); 1284 in.close(); 1285 } catch (FileNotFoundException e){ 1286 e.printStackTrace(); 1287 } catch (RuntimeException e) { 1288 e.printStackTrace(); 1289 } catch (IOException e) { 1290 e.printStackTrace(); 1291 } 1292 if (p != null) { 1293 int sx = b.getInt("scrollX", 0); 1294 int sy = b.getInt("scrollY", 0); 1295 float scale = b.getFloat("scale", 1.0f); 1296 mDrawHistory = true; 1297 mHistoryPicture = p; 1298 mScrollX = sx; 1299 mScrollY = sy; 1300 mHistoryWidth = Math.round(p.getWidth() * scale); 1301 mHistoryHeight = Math.round(p.getHeight() * scale); 1302 // as getWidth() / getHeight() of the view are not 1303 // available yet, set up mActualScale, so that when 1304 // onSizeChanged() is called, the rest will be set 1305 // correctly 1306 mActualScale = scale; 1307 mTextWrapScale = b.getFloat("textwrapScale", scale); 1308 mInZoomOverview = b.getBoolean("overview"); 1309 invalidate(); 1310 return true; 1311 } 1312 } 1313 return false; 1314 } 1315 1316 /** 1317 * Restore the state of this WebView from the given map used in 1318 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1319 * be called to restore the state of the WebView before using the object. If 1320 * it is called after the WebView has had a chance to build state (load 1321 * pages, create a back/forward list, etc.) there may be undesirable 1322 * side-effects. Please note that this method no longer restores the 1323 * display data for this WebView. See {@link #savePicture} and {@link 1324 * #restorePicture} for saving and restoring the display data. 1325 * @param inState The incoming Bundle of state. 1326 * @return The restored back/forward list or null if restoreState failed. 1327 * @see #savePicture 1328 * @see #restorePicture 1329 */ 1330 public WebBackForwardList restoreState(Bundle inState) { 1331 WebBackForwardList returnList = null; 1332 if (inState == null) { 1333 return returnList; 1334 } 1335 if (inState.containsKey("index") && inState.containsKey("history")) { 1336 mCertificate = SslCertificate.restoreState( 1337 inState.getBundle("certificate")); 1338 1339 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1340 final int index = inState.getInt("index"); 1341 // We can't use a clone of the list because we need to modify the 1342 // shared copy, so synchronize instead to prevent concurrent 1343 // modifications. 1344 synchronized (list) { 1345 final List<byte[]> history = 1346 (List<byte[]>) inState.getSerializable("history"); 1347 final int size = history.size(); 1348 // Check the index bounds so we don't crash in native code while 1349 // restoring the history index. 1350 if (index < 0 || index >= size) { 1351 return null; 1352 } 1353 for (int i = 0; i < size; i++) { 1354 byte[] data = history.remove(0); 1355 if (data == null) { 1356 // If we somehow have null data, we cannot reconstruct 1357 // the item and thus our history list cannot be rebuilt. 1358 return null; 1359 } 1360 WebHistoryItem item = new WebHistoryItem(data); 1361 list.addHistoryItem(item); 1362 } 1363 // Grab the most recent copy to return to the caller. 1364 returnList = copyBackForwardList(); 1365 // Update the copy to have the correct index. 1366 returnList.setCurrentIndex(index); 1367 } 1368 // Remove all pending messages because we are restoring previous 1369 // state. 1370 mWebViewCore.removeMessages(); 1371 // Send a restore state message. 1372 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1373 } 1374 return returnList; 1375 } 1376 1377 /** 1378 * Load the given url with the extra headers. 1379 * @param url The url of the resource to load. 1380 * @param extraHeaders The extra headers sent with this url. This should not 1381 * include the common headers like "user-agent". If it does, it 1382 * will be replaced by the intrinsic value of the WebView. 1383 */ 1384 public void loadUrl(String url, Map<String, String> extraHeaders) { 1385 switchOutDrawHistory(); 1386 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1387 arg.mUrl = url; 1388 arg.mExtraHeaders = extraHeaders; 1389 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1390 clearTextEntry(); 1391 } 1392 1393 /** 1394 * Load the given url. 1395 * @param url The url of the resource to load. 1396 */ 1397 public void loadUrl(String url) { 1398 if (url == null) { 1399 return; 1400 } 1401 loadUrl(url, null); 1402 } 1403 1404 /** 1405 * Load the url with postData using "POST" method into the WebView. If url 1406 * is not a network url, it will be loaded with {link 1407 * {@link #loadUrl(String)} instead. 1408 * 1409 * @param url The url of the resource to load. 1410 * @param postData The data will be passed to "POST" request. 1411 */ 1412 public void postUrl(String url, byte[] postData) { 1413 if (URLUtil.isNetworkUrl(url)) { 1414 switchOutDrawHistory(); 1415 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1416 arg.mUrl = url; 1417 arg.mPostData = postData; 1418 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1419 clearTextEntry(); 1420 } else { 1421 loadUrl(url); 1422 } 1423 } 1424 1425 /** 1426 * Load the given data into the WebView. This will load the data into 1427 * WebView using the data: scheme. Content loaded through this mechanism 1428 * does not have the ability to load content from the network. 1429 * @param data A String of data in the given encoding. 1430 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1431 * @param encoding The encoding of the data. i.e. utf-8, base64 1432 */ 1433 public void loadData(String data, String mimeType, String encoding) { 1434 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1435 } 1436 1437 /** 1438 * Load the given data into the WebView, use the provided URL as the base 1439 * URL for the content. The base URL is the URL that represents the page 1440 * that is loaded through this interface. As such, it is used for the 1441 * history entry and to resolve any relative URLs. The failUrl is used if 1442 * browser fails to load the data provided. If it is empty or null, and the 1443 * load fails, then no history entry is created. 1444 * <p> 1445 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1446 * files through "file:///android_asset/" for the sub resources is more 1447 * restricted. If you provide null or empty string as baseUrl, you won't be 1448 * able to access asset files. If the baseUrl is anything other than 1449 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1450 * sub resources. 1451 * 1452 * @param baseUrl Url to resolve relative paths with, if null defaults to 1453 * "about:blank" 1454 * @param data A String of data in the given encoding. 1455 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1456 * defaults to "text/html" 1457 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1458 * @param failUrl URL to use if the content fails to load or null. 1459 */ 1460 public void loadDataWithBaseURL(String baseUrl, String data, 1461 String mimeType, String encoding, String failUrl) { 1462 1463 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1464 loadData(data, mimeType, encoding); 1465 return; 1466 } 1467 switchOutDrawHistory(); 1468 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1469 arg.mBaseUrl = baseUrl; 1470 arg.mData = data; 1471 arg.mMimeType = mimeType; 1472 arg.mEncoding = encoding; 1473 arg.mFailUrl = failUrl; 1474 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1475 clearTextEntry(); 1476 } 1477 1478 /** 1479 * Stop the current load. 1480 */ 1481 public void stopLoading() { 1482 // TODO: should we clear all the messages in the queue before sending 1483 // STOP_LOADING? 1484 switchOutDrawHistory(); 1485 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1486 } 1487 1488 /** 1489 * Reload the current url. 1490 */ 1491 public void reload() { 1492 clearTextEntry(); 1493 switchOutDrawHistory(); 1494 mWebViewCore.sendMessage(EventHub.RELOAD); 1495 } 1496 1497 /** 1498 * Return true if this WebView has a back history item. 1499 * @return True iff this WebView has a back history item. 1500 */ 1501 public boolean canGoBack() { 1502 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1503 synchronized (l) { 1504 if (l.getClearPending()) { 1505 return false; 1506 } else { 1507 return l.getCurrentIndex() > 0; 1508 } 1509 } 1510 } 1511 1512 /** 1513 * Go back in the history of this WebView. 1514 */ 1515 public void goBack() { 1516 goBackOrForward(-1); 1517 } 1518 1519 /** 1520 * Return true if this WebView has a forward history item. 1521 * @return True iff this Webview has a forward history item. 1522 */ 1523 public boolean canGoForward() { 1524 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1525 synchronized (l) { 1526 if (l.getClearPending()) { 1527 return false; 1528 } else { 1529 return l.getCurrentIndex() < l.getSize() - 1; 1530 } 1531 } 1532 } 1533 1534 /** 1535 * Go forward in the history of this WebView. 1536 */ 1537 public void goForward() { 1538 goBackOrForward(1); 1539 } 1540 1541 /** 1542 * Return true if the page can go back or forward the given 1543 * number of steps. 1544 * @param steps The negative or positive number of steps to move the 1545 * history. 1546 */ 1547 public boolean canGoBackOrForward(int steps) { 1548 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1549 synchronized (l) { 1550 if (l.getClearPending()) { 1551 return false; 1552 } else { 1553 int newIndex = l.getCurrentIndex() + steps; 1554 return newIndex >= 0 && newIndex < l.getSize(); 1555 } 1556 } 1557 } 1558 1559 /** 1560 * Go to the history item that is the number of steps away from 1561 * the current item. Steps is negative if backward and positive 1562 * if forward. 1563 * @param steps The number of steps to take back or forward in the back 1564 * forward list. 1565 */ 1566 public void goBackOrForward(int steps) { 1567 goBackOrForward(steps, false); 1568 } 1569 1570 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1571 // every time we go back or forward, we want to reset the 1572 // WebView certificate: 1573 // if the new site is secure, we will reload it and get a 1574 // new certificate set; 1575 // if the new site is not secure, the certificate must be 1576 // null, and that will be the case 1577 mCertificate = null; 1578 if (steps != 0) { 1579 clearTextEntry(); 1580 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1581 ignoreSnapshot ? 1 : 0); 1582 } 1583 } 1584 1585 private boolean extendScroll(int y) { 1586 int finalY = mScroller.getFinalY(); 1587 int newY = pinLocY(finalY + y); 1588 if (newY == finalY) return false; 1589 mScroller.setFinalY(newY); 1590 mScroller.extendDuration(computeDuration(0, y)); 1591 return true; 1592 } 1593 1594 /** 1595 * Scroll the contents of the view up by half the view size 1596 * @param top true to jump to the top of the page 1597 * @return true if the page was scrolled 1598 */ 1599 public boolean pageUp(boolean top) { 1600 if (mNativeClass == 0) { 1601 return false; 1602 } 1603 nativeClearCursor(); // start next trackball movement from page edge 1604 if (top) { 1605 // go to the top of the document 1606 return pinScrollTo(mScrollX, 0, true, 0); 1607 } 1608 // Page up 1609 int h = getHeight(); 1610 int y; 1611 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1612 y = -h + PAGE_SCROLL_OVERLAP; 1613 } else { 1614 y = -h / 2; 1615 } 1616 mUserScroll = true; 1617 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1618 : extendScroll(y); 1619 } 1620 1621 /** 1622 * Scroll the contents of the view down by half the page size 1623 * @param bottom true to jump to bottom of page 1624 * @return true if the page was scrolled 1625 */ 1626 public boolean pageDown(boolean bottom) { 1627 if (mNativeClass == 0) { 1628 return false; 1629 } 1630 nativeClearCursor(); // start next trackball movement from page edge 1631 if (bottom) { 1632 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1633 } 1634 // Page down. 1635 int h = getHeight(); 1636 int y; 1637 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1638 y = h - PAGE_SCROLL_OVERLAP; 1639 } else { 1640 y = h / 2; 1641 } 1642 mUserScroll = true; 1643 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1644 : extendScroll(y); 1645 } 1646 1647 /** 1648 * Clear the view so that onDraw() will draw nothing but white background, 1649 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1650 */ 1651 public void clearView() { 1652 mContentWidth = 0; 1653 mContentHeight = 0; 1654 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1655 } 1656 1657 /** 1658 * Return a new picture that captures the current display of the webview. 1659 * This is a copy of the display, and will be unaffected if the webview 1660 * later loads a different URL. 1661 * 1662 * @return a picture containing the current contents of the view. Note this 1663 * picture is of the entire document, and is not restricted to the 1664 * bounds of the view. 1665 */ 1666 public Picture capturePicture() { 1667 if (null == mWebViewCore) return null; // check for out of memory tab 1668 return mWebViewCore.copyContentPicture(); 1669 } 1670 1671 /** 1672 * Return true if the browser is displaying a TextView for text input. 1673 */ 1674 private boolean inEditingMode() { 1675 return mWebTextView != null && mWebTextView.getParent() != null 1676 && mWebTextView.hasFocus(); 1677 } 1678 1679 private void clearTextEntry() { 1680 if (inEditingMode()) { 1681 mWebTextView.remove(); 1682 } 1683 } 1684 1685 /** 1686 * Return the current scale of the WebView 1687 * @return The current scale. 1688 */ 1689 public float getScale() { 1690 return mActualScale; 1691 } 1692 1693 /** 1694 * Set the initial scale for the WebView. 0 means default. If 1695 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1696 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1697 * WebView starts will this value as initial scale. 1698 * 1699 * @param scaleInPercent The initial scale in percent. 1700 */ 1701 public void setInitialScale(int scaleInPercent) { 1702 mInitialScaleInPercent = scaleInPercent; 1703 } 1704 1705 /** 1706 * Invoke the graphical zoom picker widget for this WebView. This will 1707 * result in the zoom widget appearing on the screen to control the zoom 1708 * level of this WebView. 1709 */ 1710 public void invokeZoomPicker() { 1711 if (!getSettings().supportZoom()) { 1712 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1713 return; 1714 } 1715 clearTextEntry(); 1716 if (getSettings().getBuiltInZoomControls()) { 1717 mZoomButtonsController.setVisible(true); 1718 } else { 1719 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1720 mPrivateHandler.postDelayed(mZoomControlRunnable, 1721 ZOOM_CONTROLS_TIMEOUT); 1722 } 1723 } 1724 1725 /** 1726 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1727 * is found and the anchor has a non-javascript url, the HitTestResult type 1728 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1729 * anchor does not have a url or if it is a javascript url, the type will 1730 * be UNKNOWN_TYPE and the url has to be retrieved through 1731 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1732 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1733 * the "extra" field. A type of 1734 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1735 * a child node. If a phone number is found, the HitTestResult type is set 1736 * to PHONE_TYPE and the phone number is set in the "extra" field of 1737 * HitTestResult. If a map address is found, the HitTestResult type is set 1738 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1739 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1740 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1741 * HitTestResult type is set to UNKNOWN_TYPE. 1742 */ 1743 public HitTestResult getHitTestResult() { 1744 if (mNativeClass == 0) { 1745 return null; 1746 } 1747 1748 HitTestResult result = new HitTestResult(); 1749 if (nativeHasCursorNode()) { 1750 if (nativeCursorIsTextInput()) { 1751 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1752 } else { 1753 String text = nativeCursorText(); 1754 if (text != null) { 1755 if (text.startsWith(SCHEME_TEL)) { 1756 result.setType(HitTestResult.PHONE_TYPE); 1757 result.setExtra(text.substring(SCHEME_TEL.length())); 1758 } else if (text.startsWith(SCHEME_MAILTO)) { 1759 result.setType(HitTestResult.EMAIL_TYPE); 1760 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1761 } else if (text.startsWith(SCHEME_GEO)) { 1762 result.setType(HitTestResult.GEO_TYPE); 1763 result.setExtra(URLDecoder.decode(text 1764 .substring(SCHEME_GEO.length()))); 1765 } else if (nativeCursorIsAnchor()) { 1766 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1767 result.setExtra(text); 1768 } 1769 } 1770 } 1771 } 1772 int type = result.getType(); 1773 if (type == HitTestResult.UNKNOWN_TYPE 1774 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1775 // Now check to see if it is an image. 1776 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1777 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1778 String text = nativeImageURI(contentX, contentY); 1779 if (text != null) { 1780 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1781 HitTestResult.IMAGE_TYPE : 1782 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1783 result.setExtra(text); 1784 } 1785 } 1786 return result; 1787 } 1788 1789 // Called by JNI when the DOM has changed the focus. Clear the focus so 1790 // that new keys will go to the newly focused field 1791 private void domChangedFocus() { 1792 if (inEditingMode()) { 1793 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 1794 } 1795 } 1796 /** 1797 * Request the href of an anchor element due to getFocusNodePath returning 1798 * "href." If hrefMsg is null, this method returns immediately and does not 1799 * dispatch hrefMsg to its target. 1800 * 1801 * @param hrefMsg This message will be dispatched with the result of the 1802 * request as the data member with "url" as key. The result can 1803 * be null. 1804 */ 1805 // FIXME: API change required to change the name of this function. We now 1806 // look at the cursor node, and not the focus node. Also, what is 1807 // getFocusNodePath? 1808 public void requestFocusNodeHref(Message hrefMsg) { 1809 if (hrefMsg == null || mNativeClass == 0) { 1810 return; 1811 } 1812 if (nativeCursorIsAnchor()) { 1813 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1814 nativeCursorFramePointer(), nativeCursorNodePointer(), 1815 hrefMsg); 1816 } 1817 } 1818 1819 /** 1820 * Request the url of the image last touched by the user. msg will be sent 1821 * to its target with a String representing the url as its object. 1822 * 1823 * @param msg This message will be dispatched with the result of the request 1824 * as the data member with "url" as key. The result can be null. 1825 */ 1826 public void requestImageRef(Message msg) { 1827 if (0 == mNativeClass) return; // client isn't initialized 1828 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1829 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1830 String ref = nativeImageURI(contentX, contentY); 1831 Bundle data = msg.getData(); 1832 data.putString("url", ref); 1833 msg.setData(data); 1834 msg.sendToTarget(); 1835 } 1836 1837 private static int pinLoc(int x, int viewMax, int docMax) { 1838// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1839 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1840 // pin the short document to the top/left of the screen 1841 x = 0; 1842// Log.d(LOGTAG, "--- center " + x); 1843 } else if (x < 0) { 1844 x = 0; 1845// Log.d(LOGTAG, "--- zero"); 1846 } else if (x + viewMax > docMax) { 1847 x = docMax - viewMax; 1848// Log.d(LOGTAG, "--- pin " + x); 1849 } 1850 return x; 1851 } 1852 1853 // Expects x in view coordinates 1854 private int pinLocX(int x) { 1855 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1856 } 1857 1858 // Expects y in view coordinates 1859 private int pinLocY(int y) { 1860 int titleH = getTitleHeight(); 1861 // if the titlebar is still visible, just pin against 0 1862 if (y <= titleH) { 1863 return Math.max(y, 0); 1864 } 1865 // convert to 0-based coordinate (subtract the title height) 1866 // pin(), and then add the title height back in 1867 return pinLoc(y - titleH, getViewHeight(), 1868 computeVerticalScrollRange()) + titleH; 1869 } 1870 1871 /** 1872 * A title bar which is embedded in this WebView, and scrolls along with it 1873 * vertically, but not horizontally. 1874 */ 1875 private View mTitleBar; 1876 1877 /** 1878 * Since we draw the title bar ourselves, we removed the shadow from the 1879 * browser's activity. We do want a shadow at the bottom of the title bar, 1880 * or at the top of the screen if the title bar is not visible. This 1881 * drawable serves that purpose. 1882 */ 1883 private Drawable mTitleShadow; 1884 1885 /** 1886 * Add or remove a title bar to be embedded into the WebView, and scroll 1887 * along with it vertically, while remaining in view horizontally. Pass 1888 * null to remove the title bar from the WebView, and return to drawing 1889 * the WebView normally without translating to account for the title bar. 1890 * @hide 1891 */ 1892 public void setEmbeddedTitleBar(View v) { 1893 if (mTitleBar == v) return; 1894 if (mTitleBar != null) { 1895 removeView(mTitleBar); 1896 } 1897 if (null != v) { 1898 addView(v, new AbsoluteLayout.LayoutParams( 1899 ViewGroup.LayoutParams.MATCH_PARENT, 1900 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1901 if (mTitleShadow == null) { 1902 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1903 com.android.internal.R.drawable.title_bar_shadow); 1904 } 1905 } 1906 mTitleBar = v; 1907 } 1908 1909 /** 1910 * Given a distance in view space, convert it to content space. Note: this 1911 * does not reflect translation, just scaling, so this should not be called 1912 * with coordinates, but should be called for dimensions like width or 1913 * height. 1914 */ 1915 private int viewToContentDimension(int d) { 1916 return Math.round(d * mInvActualScale); 1917 } 1918 1919 /** 1920 * Given an x coordinate in view space, convert it to content space. Also 1921 * may be used for absolute heights (such as for the WebTextView's 1922 * textSize, which is unaffected by the height of the title bar). 1923 */ 1924 /*package*/ int viewToContentX(int x) { 1925 return viewToContentDimension(x); 1926 } 1927 1928 /** 1929 * Given a y coordinate in view space, convert it to content space. 1930 * Takes into account the height of the title bar if there is one 1931 * embedded into the WebView. 1932 */ 1933 /*package*/ int viewToContentY(int y) { 1934 return viewToContentDimension(y - getTitleHeight()); 1935 } 1936 1937 /** 1938 * Given a distance in content space, convert it to view space. Note: this 1939 * does not reflect translation, just scaling, so this should not be called 1940 * with coordinates, but should be called for dimensions like width or 1941 * height. 1942 */ 1943 /*package*/ int contentToViewDimension(int d) { 1944 return Math.round(d * mActualScale); 1945 } 1946 1947 /** 1948 * Given an x coordinate in content space, convert it to view 1949 * space. 1950 */ 1951 /*package*/ int contentToViewX(int x) { 1952 return contentToViewDimension(x); 1953 } 1954 1955 /** 1956 * Given a y coordinate in content space, convert it to view 1957 * space. Takes into account the height of the title bar. 1958 */ 1959 /*package*/ int contentToViewY(int y) { 1960 return contentToViewDimension(y) + getTitleHeight(); 1961 } 1962 1963 private Rect contentToViewRect(Rect x) { 1964 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 1965 contentToViewX(x.right), contentToViewY(x.bottom)); 1966 } 1967 1968 /* To invalidate a rectangle in content coordinates, we need to transform 1969 the rect into view coordinates, so we can then call invalidate(...). 1970 1971 Normally, we would just call contentToView[XY](...), which eventually 1972 calls Math.round(coordinate * mActualScale). However, for invalidates, 1973 we need to account for the slop that occurs with antialiasing. To 1974 address that, we are a little more liberal in the size of the rect that 1975 we invalidate. 1976 1977 This liberal calculation calls floor() for the top/left, and ceil() for 1978 the bottom/right coordinates. This catches the possible extra pixels of 1979 antialiasing that we might have missed with just round(). 1980 */ 1981 1982 // Called by JNI to invalidate the View, given rectangle coordinates in 1983 // content space 1984 private void viewInvalidate(int l, int t, int r, int b) { 1985 final float scale = mActualScale; 1986 final int dy = getTitleHeight(); 1987 invalidate((int)Math.floor(l * scale), 1988 (int)Math.floor(t * scale) + dy, 1989 (int)Math.ceil(r * scale), 1990 (int)Math.ceil(b * scale) + dy); 1991 } 1992 1993 // Called by JNI to invalidate the View after a delay, given rectangle 1994 // coordinates in content space 1995 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 1996 final float scale = mActualScale; 1997 final int dy = getTitleHeight(); 1998 postInvalidateDelayed(delay, 1999 (int)Math.floor(l * scale), 2000 (int)Math.floor(t * scale) + dy, 2001 (int)Math.ceil(r * scale), 2002 (int)Math.ceil(b * scale) + dy); 2003 } 2004 2005 private void invalidateContentRect(Rect r) { 2006 viewInvalidate(r.left, r.top, r.right, r.bottom); 2007 } 2008 2009 // stop the scroll animation, and don't let a subsequent fling add 2010 // to the existing velocity 2011 private void abortAnimation() { 2012 mScroller.abortAnimation(); 2013 mLastVelocity = 0; 2014 } 2015 2016 /* call from webcoreview.draw(), so we're still executing in the UI thread 2017 */ 2018 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2019 2020 // premature data from webkit, ignore 2021 if ((w | h) == 0) { 2022 return; 2023 } 2024 2025 // don't abort a scroll animation if we didn't change anything 2026 if (mContentWidth != w || mContentHeight != h) { 2027 // record new dimensions 2028 mContentWidth = w; 2029 mContentHeight = h; 2030 // If history Picture is drawn, don't update scroll. They will be 2031 // updated when we get out of that mode. 2032 if (!mDrawHistory) { 2033 // repin our scroll, taking into account the new content size 2034 int oldX = mScrollX; 2035 int oldY = mScrollY; 2036 mScrollX = pinLocX(mScrollX); 2037 mScrollY = pinLocY(mScrollY); 2038 if (oldX != mScrollX || oldY != mScrollY) { 2039 sendOurVisibleRect(); 2040 } 2041 if (!mScroller.isFinished()) { 2042 // We are in the middle of a scroll. Repin the final scroll 2043 // position. 2044 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2045 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2046 } 2047 } 2048 } 2049 contentSizeChanged(updateLayout); 2050 } 2051 2052 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 2053 boolean force) { 2054 if (scale < mMinZoomScale) { 2055 scale = mMinZoomScale; 2056 } else if (scale > mMaxZoomScale) { 2057 scale = mMaxZoomScale; 2058 } 2059 if (updateTextWrapScale) { 2060 mTextWrapScale = scale; 2061 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 2062 mLastHeightSent = 0; 2063 } 2064 if (scale != mActualScale || force) { 2065 if (mDrawHistory) { 2066 // If history Picture is drawn, don't update scroll. They will 2067 // be updated when we get out of that mode. 2068 if (scale != mActualScale && !mPreviewZoomOnly) { 2069 mCallbackProxy.onScaleChanged(mActualScale, scale); 2070 } 2071 mActualScale = scale; 2072 mInvActualScale = 1 / scale; 2073 sendViewSizeZoom(); 2074 } else { 2075 // update our scroll so we don't appear to jump 2076 // i.e. keep the center of the doc in the center of the view 2077 2078 int oldX = mScrollX; 2079 int oldY = mScrollY; 2080 float ratio = scale * mInvActualScale; // old inverse 2081 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2082 float sy = ratio * oldY + (ratio - 1) 2083 * (mZoomCenterY - getTitleHeight()); 2084 2085 // now update our new scale and inverse 2086 if (scale != mActualScale && !mPreviewZoomOnly) { 2087 mCallbackProxy.onScaleChanged(mActualScale, scale); 2088 } 2089 mActualScale = scale; 2090 mInvActualScale = 1 / scale; 2091 2092 // Scale all the child views 2093 mViewManager.scaleAll(); 2094 2095 // as we don't have animation for scaling, don't do animation 2096 // for scrolling, as it causes weird intermediate state 2097 // pinScrollTo(Math.round(sx), Math.round(sy)); 2098 mScrollX = pinLocX(Math.round(sx)); 2099 mScrollY = pinLocY(Math.round(sy)); 2100 2101 // update webkit 2102 sendViewSizeZoom(); 2103 sendOurVisibleRect(); 2104 } 2105 } 2106 } 2107 2108 // Used to avoid sending many visible rect messages. 2109 private Rect mLastVisibleRectSent; 2110 private Rect mLastGlobalRect; 2111 2112 private Rect sendOurVisibleRect() { 2113 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2114 2115 Rect rect = new Rect(); 2116 calcOurContentVisibleRect(rect); 2117 // Rect.equals() checks for null input. 2118 if (!rect.equals(mLastVisibleRectSent)) { 2119 Point pos = new Point(rect.left, rect.top); 2120 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2121 nativeMoveGeneration(), 0, pos); 2122 mLastVisibleRectSent = rect; 2123 } 2124 Rect globalRect = new Rect(); 2125 if (getGlobalVisibleRect(globalRect) 2126 && !globalRect.equals(mLastGlobalRect)) { 2127 if (DebugFlags.WEB_VIEW) { 2128 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2129 + globalRect.top + ",r=" + globalRect.right + ",b=" 2130 + globalRect.bottom); 2131 } 2132 // TODO: the global offset is only used by windowRect() 2133 // in ChromeClientAndroid ; other clients such as touch 2134 // and mouse events could return view + screen relative points. 2135 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2136 mLastGlobalRect = globalRect; 2137 } 2138 return rect; 2139 } 2140 2141 // Sets r to be the visible rectangle of our webview in view coordinates 2142 private void calcOurVisibleRect(Rect r) { 2143 Point p = new Point(); 2144 getGlobalVisibleRect(r, p); 2145 r.offset(-p.x, -p.y); 2146 if (mFindIsUp) { 2147 r.bottom -= mFindHeight; 2148 } 2149 } 2150 2151 // Sets r to be our visible rectangle in content coordinates 2152 private void calcOurContentVisibleRect(Rect r) { 2153 calcOurVisibleRect(r); 2154 r.left = viewToContentX(r.left); 2155 // viewToContentY will remove the total height of the title bar. Add 2156 // the visible height back in to account for the fact that if the title 2157 // bar is partially visible, the part of the visible rect which is 2158 // displaying our content is displaced by that amount. 2159 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2160 r.right = viewToContentX(r.right); 2161 r.bottom = viewToContentY(r.bottom); 2162 } 2163 2164 static class ViewSizeData { 2165 int mWidth; 2166 int mHeight; 2167 int mTextWrapWidth; 2168 int mAnchorX; 2169 int mAnchorY; 2170 float mScale; 2171 boolean mIgnoreHeight; 2172 } 2173 2174 /** 2175 * Compute unzoomed width and height, and if they differ from the last 2176 * values we sent, send them to webkit (to be used has new viewport) 2177 * 2178 * @return true if new values were sent 2179 */ 2180 private boolean sendViewSizeZoom() { 2181 if (mPreviewZoomOnly) return false; 2182 2183 int viewWidth = getViewWidth(); 2184 int newWidth = Math.round(viewWidth * mInvActualScale); 2185 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2186 /* 2187 * Because the native side may have already done a layout before the 2188 * View system was able to measure us, we have to send a height of 0 to 2189 * remove excess whitespace when we grow our width. This will trigger a 2190 * layout and a change in content size. This content size change will 2191 * mean that contentSizeChanged will either call this method directly or 2192 * indirectly from onSizeChanged. 2193 */ 2194 if (newWidth > mLastWidthSent && mWrapContent) { 2195 newHeight = 0; 2196 } 2197 // Avoid sending another message if the dimensions have not changed. 2198 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2199 ViewSizeData data = new ViewSizeData(); 2200 data.mWidth = newWidth; 2201 data.mHeight = newHeight; 2202 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2203 data.mScale = mActualScale; 2204 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2205 data.mAnchorX = mAnchorX; 2206 data.mAnchorY = mAnchorY; 2207 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2208 mLastWidthSent = newWidth; 2209 mLastHeightSent = newHeight; 2210 mAnchorX = mAnchorY = 0; 2211 return true; 2212 } 2213 return false; 2214 } 2215 2216 @Override 2217 protected int computeHorizontalScrollRange() { 2218 if (mDrawHistory) { 2219 return mHistoryWidth; 2220 } else { 2221 // to avoid rounding error caused unnecessary scrollbar, use floor 2222 return (int) Math.floor(mContentWidth * mActualScale); 2223 } 2224 } 2225 2226 @Override 2227 protected int computeVerticalScrollRange() { 2228 if (mDrawHistory) { 2229 return mHistoryHeight; 2230 } else { 2231 // to avoid rounding error caused unnecessary scrollbar, use floor 2232 return (int) Math.floor(mContentHeight * mActualScale); 2233 } 2234 } 2235 2236 @Override 2237 protected int computeVerticalScrollOffset() { 2238 return Math.max(mScrollY - getTitleHeight(), 0); 2239 } 2240 2241 @Override 2242 protected int computeVerticalScrollExtent() { 2243 return getViewHeight(); 2244 } 2245 2246 /** @hide */ 2247 @Override 2248 protected void onDrawVerticalScrollBar(Canvas canvas, 2249 Drawable scrollBar, 2250 int l, int t, int r, int b) { 2251 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2252 scrollBar.draw(canvas); 2253 } 2254 2255 /** 2256 * Get the url for the current page. This is not always the same as the url 2257 * passed to WebViewClient.onPageStarted because although the load for 2258 * that url has begun, the current page may not have changed. 2259 * @return The url for the current page. 2260 */ 2261 public String getUrl() { 2262 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2263 return h != null ? h.getUrl() : null; 2264 } 2265 2266 /** 2267 * Get the original url for the current page. This is not always the same 2268 * as the url passed to WebViewClient.onPageStarted because although the 2269 * load for that url has begun, the current page may not have changed. 2270 * Also, there may have been redirects resulting in a different url to that 2271 * originally requested. 2272 * @return The url that was originally requested for the current page. 2273 */ 2274 public String getOriginalUrl() { 2275 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2276 return h != null ? h.getOriginalUrl() : null; 2277 } 2278 2279 /** 2280 * Get the title for the current page. This is the title of the current page 2281 * until WebViewClient.onReceivedTitle is called. 2282 * @return The title for the current page. 2283 */ 2284 public String getTitle() { 2285 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2286 return h != null ? h.getTitle() : null; 2287 } 2288 2289 /** 2290 * Get the favicon for the current page. This is the favicon of the current 2291 * page until WebViewClient.onReceivedIcon is called. 2292 * @return The favicon for the current page. 2293 */ 2294 public Bitmap getFavicon() { 2295 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2296 return h != null ? h.getFavicon() : null; 2297 } 2298 2299 /** 2300 * Get the touch icon url for the apple-touch-icon <link> element. 2301 * @hide 2302 */ 2303 public String getTouchIconUrl() { 2304 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2305 return h != null ? h.getTouchIconUrl() : null; 2306 } 2307 2308 /** 2309 * Get the progress for the current page. 2310 * @return The progress for the current page between 0 and 100. 2311 */ 2312 public int getProgress() { 2313 return mCallbackProxy.getProgress(); 2314 } 2315 2316 /** 2317 * @return the height of the HTML content. 2318 */ 2319 public int getContentHeight() { 2320 return mContentHeight; 2321 } 2322 2323 /** 2324 * @return the width of the HTML content. 2325 * @hide 2326 */ 2327 public int getContentWidth() { 2328 return mContentWidth; 2329 } 2330 2331 /** 2332 * Pause all layout, parsing, and javascript timers for all webviews. This 2333 * is a global requests, not restricted to just this webview. This can be 2334 * useful if the application has been paused. 2335 */ 2336 public void pauseTimers() { 2337 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2338 } 2339 2340 /** 2341 * Resume all layout, parsing, and javascript timers for all webviews. 2342 * This will resume dispatching all timers. 2343 */ 2344 public void resumeTimers() { 2345 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2346 } 2347 2348 /** 2349 * Call this to pause any extra processing associated with this view and 2350 * its associated DOM/plugins/javascript/etc. For example, if the view is 2351 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2352 * network traffic. When the view is again "active", call onResume(). 2353 * 2354 * Note that this differs from pauseTimers(), which affects all views/DOMs 2355 * @hide 2356 */ 2357 public void onPause() { 2358 if (!mIsPaused) { 2359 mIsPaused = true; 2360 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2361 } 2362 } 2363 2364 /** 2365 * Call this to balanace a previous call to onPause() 2366 * @hide 2367 */ 2368 public void onResume() { 2369 if (mIsPaused) { 2370 mIsPaused = false; 2371 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2372 } 2373 } 2374 2375 /** 2376 * Returns true if the view is paused, meaning onPause() was called. Calling 2377 * onResume() sets the paused state back to false. 2378 * @hide 2379 */ 2380 public boolean isPaused() { 2381 return mIsPaused; 2382 } 2383 2384 /** 2385 * Call this to inform the view that memory is low so that it can 2386 * free any available memory. 2387 */ 2388 public void freeMemory() { 2389 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2390 } 2391 2392 /** 2393 * Clear the resource cache. Note that the cache is per-application, so 2394 * this will clear the cache for all WebViews used. 2395 * 2396 * @param includeDiskFiles If false, only the RAM cache is cleared. 2397 */ 2398 public void clearCache(boolean includeDiskFiles) { 2399 // Note: this really needs to be a static method as it clears cache for all 2400 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2401 // we can't make this static. 2402 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2403 includeDiskFiles ? 1 : 0, 0); 2404 } 2405 2406 /** 2407 * Make sure that clearing the form data removes the adapter from the 2408 * currently focused textfield if there is one. 2409 */ 2410 public void clearFormData() { 2411 if (inEditingMode()) { 2412 AutoCompleteAdapter adapter = null; 2413 mWebTextView.setAdapterCustom(adapter); 2414 } 2415 } 2416 2417 /** 2418 * Tell the WebView to clear its internal back/forward list. 2419 */ 2420 public void clearHistory() { 2421 mCallbackProxy.getBackForwardList().setClearPending(); 2422 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2423 } 2424 2425 /** 2426 * Clear the SSL preferences table stored in response to proceeding with SSL 2427 * certificate errors. 2428 */ 2429 public void clearSslPreferences() { 2430 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2431 } 2432 2433 /** 2434 * Return the WebBackForwardList for this WebView. This contains the 2435 * back/forward list for use in querying each item in the history stack. 2436 * This is a copy of the private WebBackForwardList so it contains only a 2437 * snapshot of the current state. Multiple calls to this method may return 2438 * different objects. The object returned from this method will not be 2439 * updated to reflect any new state. 2440 */ 2441 public WebBackForwardList copyBackForwardList() { 2442 return mCallbackProxy.getBackForwardList().clone(); 2443 } 2444 2445 /* 2446 * Highlight and scroll to the next occurance of String in findAll. 2447 * Wraps the page infinitely, and scrolls. Must be called after 2448 * calling findAll. 2449 * 2450 * @param forward Direction to search. 2451 */ 2452 public void findNext(boolean forward) { 2453 if (0 == mNativeClass) return; // client isn't initialized 2454 nativeFindNext(forward); 2455 } 2456 2457 /* 2458 * Find all instances of find on the page and highlight them. 2459 * @param find String to find. 2460 * @return int The number of occurances of the String "find" 2461 * that were found. 2462 */ 2463 public int findAll(String find) { 2464 if (0 == mNativeClass) return 0; // client isn't initialized 2465 if (mFindIsUp == false) { 2466 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2467 false); 2468 mFindIsUp = true; 2469 } 2470 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2471 invalidate(); 2472 mLastFind = find; 2473 return result; 2474 } 2475 2476 // Used to know whether the find dialog is open. Affects whether 2477 // or not we draw the highlights for matches. 2478 private boolean mFindIsUp; 2479 private int mFindHeight; 2480 // Keep track of the last string sent, so we can search again after an 2481 // orientation change or the dismissal of the soft keyboard. 2482 private String mLastFind; 2483 2484 /** 2485 * Return the first substring consisting of the address of a physical 2486 * location. Currently, only addresses in the United States are detected, 2487 * and consist of: 2488 * - a house number 2489 * - a street name 2490 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2491 * - a city name 2492 * - a state or territory, either spelled out or two-letter abbr. 2493 * - an optional 5 digit or 9 digit zip code. 2494 * 2495 * All names must be correctly capitalized, and the zip code, if present, 2496 * must be valid for the state. The street type must be a standard USPS 2497 * spelling or abbreviation. The state or territory must also be spelled 2498 * or abbreviated using USPS standards. The house number may not exceed 2499 * five digits. 2500 * @param addr The string to search for addresses. 2501 * 2502 * @return the address, or if no address is found, return null. 2503 */ 2504 public static String findAddress(String addr) { 2505 return findAddress(addr, false); 2506 } 2507 2508 /** 2509 * @hide 2510 * Return the first substring consisting of the address of a physical 2511 * location. Currently, only addresses in the United States are detected, 2512 * and consist of: 2513 * - a house number 2514 * - a street name 2515 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2516 * - a city name 2517 * - a state or territory, either spelled out or two-letter abbr. 2518 * - an optional 5 digit or 9 digit zip code. 2519 * 2520 * Names are optionally capitalized, and the zip code, if present, 2521 * must be valid for the state. The street type must be a standard USPS 2522 * spelling or abbreviation. The state or territory must also be spelled 2523 * or abbreviated using USPS standards. The house number may not exceed 2524 * five digits. 2525 * @param addr The string to search for addresses. 2526 * @param caseInsensitive addr Set to true to make search ignore case. 2527 * 2528 * @return the address, or if no address is found, return null. 2529 */ 2530 public static String findAddress(String addr, boolean caseInsensitive) { 2531 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2532 } 2533 2534 /* 2535 * Clear the highlighting surrounding text matches created by findAll. 2536 */ 2537 public void clearMatches() { 2538 if (mNativeClass == 0) 2539 return; 2540 if (mFindIsUp) { 2541 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2542 false); 2543 mFindIsUp = false; 2544 } 2545 nativeSetFindIsUp(); 2546 // Now that the dialog has been removed, ensure that we scroll to a 2547 // location that is not beyond the end of the page. 2548 pinScrollTo(mScrollX, mScrollY, false, 0); 2549 invalidate(); 2550 } 2551 2552 /** 2553 * @hide 2554 */ 2555 public void setFindDialogHeight(int height) { 2556 if (DebugFlags.WEB_VIEW) { 2557 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2558 } 2559 mFindHeight = height; 2560 } 2561 2562 /** 2563 * Query the document to see if it contains any image references. The 2564 * message object will be dispatched with arg1 being set to 1 if images 2565 * were found and 0 if the document does not reference any images. 2566 * @param response The message that will be dispatched with the result. 2567 */ 2568 public void documentHasImages(Message response) { 2569 if (response == null) { 2570 return; 2571 } 2572 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2573 } 2574 2575 @Override 2576 public void computeScroll() { 2577 if (mScroller.computeScrollOffset()) { 2578 int oldX = mScrollX; 2579 int oldY = mScrollY; 2580 mScrollX = mScroller.getCurrX(); 2581 mScrollY = mScroller.getCurrY(); 2582 postInvalidate(); // So we draw again 2583 if (oldX != mScrollX || oldY != mScrollY) { 2584 // as onScrollChanged() is not called, sendOurVisibleRect() 2585 // needs to be call explicitly 2586 sendOurVisibleRect(); 2587 } 2588 } else { 2589 super.computeScroll(); 2590 } 2591 } 2592 2593 private static int computeDuration(int dx, int dy) { 2594 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2595 int duration = distance * 1000 / STD_SPEED; 2596 return Math.min(duration, MAX_DURATION); 2597 } 2598 2599 // helper to pin the scrollBy parameters (already in view coordinates) 2600 // returns true if the scroll was changed 2601 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2602 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2603 } 2604 // helper to pin the scrollTo parameters (already in view coordinates) 2605 // returns true if the scroll was changed 2606 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2607 x = pinLocX(x); 2608 y = pinLocY(y); 2609 int dx = x - mScrollX; 2610 int dy = y - mScrollY; 2611 2612 if ((dx | dy) == 0) { 2613 return false; 2614 } 2615 if (animate) { 2616 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2617 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2618 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2619 awakenScrollBars(mScroller.getDuration()); 2620 invalidate(); 2621 } else { 2622 abortAnimation(); // just in case 2623 scrollTo(x, y); 2624 } 2625 return true; 2626 } 2627 2628 // Scale from content to view coordinates, and pin. 2629 // Also called by jni webview.cpp 2630 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2631 if (mDrawHistory) { 2632 // disallow WebView to change the scroll position as History Picture 2633 // is used in the view system. 2634 // TODO: as we switchOutDrawHistory when trackball or navigation 2635 // keys are hit, this should be safe. Right? 2636 return false; 2637 } 2638 cx = contentToViewDimension(cx); 2639 cy = contentToViewDimension(cy); 2640 if (mHeightCanMeasure) { 2641 // move our visible rect according to scroll request 2642 if (cy != 0) { 2643 Rect tempRect = new Rect(); 2644 calcOurVisibleRect(tempRect); 2645 tempRect.offset(cx, cy); 2646 requestRectangleOnScreen(tempRect); 2647 } 2648 // FIXME: We scroll horizontally no matter what because currently 2649 // ScrollView and ListView will not scroll horizontally. 2650 // FIXME: Why do we only scroll horizontally if there is no 2651 // vertical scroll? 2652// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2653 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2654 } else { 2655 return pinScrollBy(cx, cy, animate, 0); 2656 } 2657 } 2658 2659 /** 2660 * Called by CallbackProxy when the page finishes loading. 2661 * @param url The URL of the page which has finished loading. 2662 */ 2663 /* package */ void onPageFinished(String url) { 2664 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 2665 // If the user is now on a different page, or has scrolled the page 2666 // past the point where the title bar is offscreen, ignore the 2667 // scroll request. 2668 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 2669 && mScrollX == 0 && mScrollY == 0) { 2670 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 2671 SLIDE_TITLE_DURATION); 2672 } 2673 mPageThatNeedsToSlideTitleBarOffScreen = null; 2674 } 2675 } 2676 2677 /** 2678 * The URL of a page that sent a message to scroll the title bar off screen. 2679 * 2680 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 2681 * title bar off the screen. Sometimes, the scroll position is set before 2682 * the page finishes loading. Rather than scrolling while the page is still 2683 * loading, keep track of the URL and new scroll position so we can perform 2684 * the scroll once the page finishes loading. 2685 */ 2686 private String mPageThatNeedsToSlideTitleBarOffScreen; 2687 2688 /** 2689 * The destination Y scroll position to be used when the page finishes 2690 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 2691 */ 2692 private int mYDistanceToSlideTitleOffScreen; 2693 2694 // scale from content to view coordinates, and pin 2695 // return true if pin caused the final x/y different than the request cx/cy, 2696 // and a future scroll may reach the request cx/cy after our size has 2697 // changed 2698 // return false if the view scroll to the exact position as it is requested, 2699 // where negative numbers are taken to mean 0 2700 private boolean setContentScrollTo(int cx, int cy) { 2701 if (mDrawHistory) { 2702 // disallow WebView to change the scroll position as History Picture 2703 // is used in the view system. 2704 // One known case where this is called is that WebCore tries to 2705 // restore the scroll position. As history Picture already uses the 2706 // saved scroll position, it is ok to skip this. 2707 return false; 2708 } 2709 int vx; 2710 int vy; 2711 if ((cx | cy) == 0) { 2712 // If the page is being scrolled to (0,0), do not add in the title 2713 // bar's height, and simply scroll to (0,0). (The only other work 2714 // in contentToView_ is to multiply, so this would not change 0.) 2715 vx = 0; 2716 vy = 0; 2717 } else { 2718 vx = contentToViewX(cx); 2719 vy = contentToViewY(cy); 2720 } 2721// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2722// vx + " " + vy + "]"); 2723 // Some mobile sites attempt to scroll the title bar off the page by 2724 // scrolling to (0,1). If we are at the top left corner of the 2725 // page, assume this is an attempt to scroll off the title bar, and 2726 // animate the title bar off screen slowly enough that the user can see 2727 // it. 2728 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 2729 && mTitleBar != null) { 2730 // FIXME: 100 should be defined somewhere as our max progress. 2731 if (getProgress() < 100) { 2732 // Wait to scroll the title bar off screen until the page has 2733 // finished loading. Keep track of the URL and the destination 2734 // Y position 2735 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 2736 mYDistanceToSlideTitleOffScreen = vy; 2737 } else { 2738 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2739 } 2740 // Since we are animating, we have not yet reached the desired 2741 // scroll position. Do not return true to request another attempt 2742 return false; 2743 } 2744 pinScrollTo(vx, vy, false, 0); 2745 // If the request was to scroll to a negative coordinate, treat it as if 2746 // it was a request to scroll to 0 2747 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2748 return true; 2749 } else { 2750 return false; 2751 } 2752 } 2753 2754 // scale from content to view coordinates, and pin 2755 private void spawnContentScrollTo(int cx, int cy) { 2756 if (mDrawHistory) { 2757 // disallow WebView to change the scroll position as History Picture 2758 // is used in the view system. 2759 return; 2760 } 2761 int vx = contentToViewX(cx); 2762 int vy = contentToViewY(cy); 2763 pinScrollTo(vx, vy, true, 0); 2764 } 2765 2766 /** 2767 * These are from webkit, and are in content coordinate system (unzoomed) 2768 */ 2769 private void contentSizeChanged(boolean updateLayout) { 2770 // suppress 0,0 since we usually see real dimensions soon after 2771 // this avoids drawing the prev content in a funny place. If we find a 2772 // way to consolidate these notifications, this check may become 2773 // obsolete 2774 if ((mContentWidth | mContentHeight) == 0) { 2775 return; 2776 } 2777 2778 if (mHeightCanMeasure) { 2779 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2780 || updateLayout) { 2781 requestLayout(); 2782 } 2783 } else if (mWidthCanMeasure) { 2784 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2785 || updateLayout) { 2786 requestLayout(); 2787 } 2788 } else { 2789 // If we don't request a layout, try to send our view size to the 2790 // native side to ensure that WebCore has the correct dimensions. 2791 sendViewSizeZoom(); 2792 } 2793 } 2794 2795 /** 2796 * Set the WebViewClient that will receive various notifications and 2797 * requests. This will replace the current handler. 2798 * @param client An implementation of WebViewClient. 2799 */ 2800 public void setWebViewClient(WebViewClient client) { 2801 mCallbackProxy.setWebViewClient(client); 2802 } 2803 2804 /** 2805 * Gets the WebViewClient 2806 * @return the current WebViewClient instance. 2807 * 2808 *@hide pending API council approval. 2809 */ 2810 public WebViewClient getWebViewClient() { 2811 return mCallbackProxy.getWebViewClient(); 2812 } 2813 2814 /** 2815 * Register the interface to be used when content can not be handled by 2816 * the rendering engine, and should be downloaded instead. This will replace 2817 * the current handler. 2818 * @param listener An implementation of DownloadListener. 2819 */ 2820 public void setDownloadListener(DownloadListener listener) { 2821 mCallbackProxy.setDownloadListener(listener); 2822 } 2823 2824 /** 2825 * Set the chrome handler. This is an implementation of WebChromeClient for 2826 * use in handling Javascript dialogs, favicons, titles, and the progress. 2827 * This will replace the current handler. 2828 * @param client An implementation of WebChromeClient. 2829 */ 2830 public void setWebChromeClient(WebChromeClient client) { 2831 mCallbackProxy.setWebChromeClient(client); 2832 } 2833 2834 /** 2835 * Gets the chrome handler. 2836 * @return the current WebChromeClient instance. 2837 * 2838 * @hide API council approval. 2839 */ 2840 public WebChromeClient getWebChromeClient() { 2841 return mCallbackProxy.getWebChromeClient(); 2842 } 2843 2844 /** 2845 * Set the Picture listener. This is an interface used to receive 2846 * notifications of a new Picture. 2847 * @param listener An implementation of WebView.PictureListener. 2848 */ 2849 public void setPictureListener(PictureListener listener) { 2850 mPictureListener = listener; 2851 } 2852 2853 /** 2854 * {@hide} 2855 */ 2856 /* FIXME: Debug only! Remove for SDK! */ 2857 public void externalRepresentation(Message callback) { 2858 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2859 } 2860 2861 /** 2862 * {@hide} 2863 */ 2864 /* FIXME: Debug only! Remove for SDK! */ 2865 public void documentAsText(Message callback) { 2866 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2867 } 2868 2869 /** 2870 * Use this function to bind an object to Javascript so that the 2871 * methods can be accessed from Javascript. 2872 * <p><strong>IMPORTANT:</strong> 2873 * <ul> 2874 * <li> Using addJavascriptInterface() allows JavaScript to control your 2875 * application. This can be a very useful feature or a dangerous security 2876 * issue. When the HTML in the WebView is untrustworthy (for example, part 2877 * or all of the HTML is provided by some person or process), then an 2878 * attacker could inject HTML that will execute your code and possibly any 2879 * code of the attacker's choosing.<br> 2880 * Do not use addJavascriptInterface() unless all of the HTML in this 2881 * WebView was written by you.</li> 2882 * <li> The Java object that is bound runs in another thread and not in 2883 * the thread that it was constructed in.</li> 2884 * </ul></p> 2885 * @param obj The class instance to bind to Javascript 2886 * @param interfaceName The name to used to expose the class in Javascript 2887 */ 2888 public void addJavascriptInterface(Object obj, String interfaceName) { 2889 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2890 arg.mObject = obj; 2891 arg.mInterfaceName = interfaceName; 2892 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2893 } 2894 2895 /** 2896 * Return the WebSettings object used to control the settings for this 2897 * WebView. 2898 * @return A WebSettings object that can be used to control this WebView's 2899 * settings. 2900 */ 2901 public WebSettings getSettings() { 2902 return mWebViewCore.getSettings(); 2903 } 2904 2905 /** 2906 * Return the list of currently loaded plugins. 2907 * @return The list of currently loaded plugins. 2908 * 2909 * @deprecated This was used for Gears, which has been deprecated. 2910 */ 2911 @Deprecated 2912 public static synchronized PluginList getPluginList() { 2913 return new PluginList(); 2914 } 2915 2916 /** 2917 * @deprecated This was used for Gears, which has been deprecated. 2918 */ 2919 @Deprecated 2920 public void refreshPlugins(boolean reloadOpenPages) { } 2921 2922 //------------------------------------------------------------------------- 2923 // Override View methods 2924 //------------------------------------------------------------------------- 2925 2926 @Override 2927 protected void finalize() throws Throwable { 2928 try { 2929 destroy(); 2930 } finally { 2931 super.finalize(); 2932 } 2933 } 2934 2935 @Override 2936 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 2937 if (child == mTitleBar) { 2938 // When drawing the title bar, move it horizontally to always show 2939 // at the top of the WebView. 2940 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 2941 } 2942 return super.drawChild(canvas, child, drawingTime); 2943 } 2944 2945 private void drawContent(Canvas canvas) { 2946 // Update the buttons in the picture, so when we draw the picture 2947 // to the screen, they are in the correct state. 2948 // Tell the native side if user is a) touching the screen, 2949 // b) pressing the trackball down, or c) pressing the enter key 2950 // If the cursor is on a button, we need to draw it in the pressed 2951 // state. 2952 // If mNativeClass is 0, we should not reach here, so we do not 2953 // need to check it again. 2954 nativeRecordButtons(hasFocus() && hasWindowFocus(), 2955 mTouchMode == TOUCH_SHORTPRESS_START_MODE 2956 || mTrackballDown || mGotCenterDown, false); 2957 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 2958 } 2959 2960 @Override 2961 protected void onDraw(Canvas canvas) { 2962 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 2963 if (mNativeClass == 0) { 2964 return; 2965 } 2966 2967 int saveCount = canvas.save(); 2968 if (mTitleBar != null) { 2969 canvas.translate(0, (int) mTitleBar.getHeight()); 2970 } 2971 if (mDragTrackerHandler == null) { 2972 drawContent(canvas); 2973 } else { 2974 if (!mDragTrackerHandler.draw(canvas)) { 2975 // sometimes the tracker doesn't draw, even though its active 2976 drawContent(canvas); 2977 } 2978 if (mDragTrackerHandler.isFinished()) { 2979 mDragTrackerHandler = null; 2980 } 2981 } 2982 canvas.restoreToCount(saveCount); 2983 2984 // Now draw the shadow. 2985 if (mTitleBar != null) { 2986 int y = mScrollY + getVisibleTitleHeight(); 2987 int height = (int) (5f * getContext().getResources() 2988 .getDisplayMetrics().density); 2989 mTitleShadow.setBounds(mScrollX, y, mScrollX + getWidth(), 2990 y + height); 2991 mTitleShadow.draw(canvas); 2992 } 2993 if (AUTO_REDRAW_HACK && mAutoRedraw) { 2994 invalidate(); 2995 } 2996 mWebViewCore.signalRepaintDone(); 2997 } 2998 2999 @Override 3000 public void setLayoutParams(ViewGroup.LayoutParams params) { 3001 if (params.height == LayoutParams.WRAP_CONTENT) { 3002 mWrapContent = true; 3003 } 3004 super.setLayoutParams(params); 3005 } 3006 3007 @Override 3008 public boolean performLongClick() { 3009 // performLongClick() is the result of a delayed message. If we switch 3010 // to windows overview, the WebView will be temporarily removed from the 3011 // view system. In that case, do nothing. 3012 if (getParent() == null) return false; 3013 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3014 // Send the click so that the textfield is in focus 3015 centerKeyPressOnTextField(); 3016 rebuildWebTextView(); 3017 } 3018 if (inEditingMode()) { 3019 return mWebTextView.performLongClick(); 3020 } else { 3021 return super.performLongClick(); 3022 } 3023 } 3024 3025 boolean inAnimateZoom() { 3026 return mZoomScale != 0; 3027 } 3028 3029 /** 3030 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3031 * has changed. This is especially important for password fields, which are 3032 * drawn by the WebTextView, since it conveys more information than what 3033 * webkit draws. Thus we need to reposition it to show in the correct 3034 * place. 3035 */ 3036 private boolean mNeedToAdjustWebTextView; 3037 3038 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3039 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3040 Rect vBox = contentToViewRect(contentBounds); 3041 Rect visibleRect = new Rect(); 3042 calcOurVisibleRect(visibleRect); 3043 // The IME may have shown, resulting in the textfield being offscreen. 3044 // If so, the textfield will be scrolled on screen, so treat it as 3045 // though it is on screen. If it is on screen, place the WebTextView in 3046 // its new place, accounting for our new scroll/zoom values. 3047 InputMethodManager imm = InputMethodManager.peekInstance(); 3048 if ((imm != null && imm.isActive(mWebTextView)) 3049 || (allowIntersect ? Rect.intersects(visibleRect, vBox) 3050 : visibleRect.contains(vBox))) { 3051 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3052 vBox.height()); 3053 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3054 contentToViewDimension( 3055 nativeFocusCandidateTextSize())); 3056 return true; 3057 } else { 3058 // The textfield is now off screen. The user probably 3059 // was not zooming to see the textfield better. Remove 3060 // the WebTextView. If the user types a key, and the 3061 // textfield is still in focus, we will reconstruct 3062 // the WebTextView and scroll it back on screen. 3063 mWebTextView.remove(); 3064 return false; 3065 } 3066 } 3067 3068 private void drawLayers(Canvas canvas) { 3069 if (mRootLayer != 0) { 3070 int scrollY = computeVerticalScrollOffset(); 3071 int viewHeight = getHeight() - getVisibleTitleHeight(); 3072 3073 // Currently for each draw we compute the animation values; 3074 // We may in the future decide to do that independently. 3075 if (nativeEvaluateLayersAnimations(mRootLayer)) { 3076 // If we have unfinished (or unstarted) animations, 3077 // we ask for a repaint. 3078 invalidate(); 3079 } 3080 3081 // We can now draw the layers. 3082 nativeDrawLayers(mRootLayer, mScrollX, scrollY, 3083 getWidth(), viewHeight, 3084 mActualScale, canvas); 3085 } 3086 } 3087 3088 private void drawCoreAndCursorRing(Canvas canvas, int color, 3089 boolean drawCursorRing) { 3090 if (mDrawHistory) { 3091 canvas.scale(mActualScale, mActualScale); 3092 canvas.drawPicture(mHistoryPicture); 3093 drawLayers(canvas); 3094 return; 3095 } 3096 3097 boolean animateZoom = mZoomScale != 0; 3098 boolean animateScroll = (!mScroller.isFinished() 3099 || mVelocityTracker != null) 3100 && (mTouchMode != TOUCH_DRAG_MODE || 3101 mHeldMotionless != MOTIONLESS_TRUE); 3102 if (mTouchMode == TOUCH_DRAG_MODE) { 3103 if (mHeldMotionless == MOTIONLESS_PENDING) { 3104 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3105 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3106 mHeldMotionless = MOTIONLESS_FALSE; 3107 } 3108 if (mHeldMotionless == MOTIONLESS_FALSE) { 3109 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3110 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3111 mHeldMotionless = MOTIONLESS_PENDING; 3112 } 3113 } 3114 if (animateZoom) { 3115 float zoomScale; 3116 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 3117 if (interval < ZOOM_ANIMATION_LENGTH) { 3118 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 3119 zoomScale = 1.0f / (mInvInitialZoomScale 3120 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 3121 invalidate(); 3122 } else { 3123 zoomScale = mZoomScale; 3124 // set mZoomScale to be 0 as we have done animation 3125 mZoomScale = 0; 3126 WebViewCore.resumeUpdatePicture(mWebViewCore); 3127 // call invalidate() again to draw with the final filters 3128 invalidate(); 3129 if (mNeedToAdjustWebTextView) { 3130 mNeedToAdjustWebTextView = false; 3131 if (didUpdateTextViewBounds(false) 3132 && nativeFocusCandidateIsPassword()) { 3133 // If it is a password field, start drawing the 3134 // WebTextView once again. 3135 mWebTextView.setInPassword(true); 3136 } 3137 } 3138 } 3139 // calculate the intermediate scroll position. As we need to use 3140 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 3141 float scale = zoomScale * mInvInitialZoomScale; 3142 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 3143 - mZoomCenterX); 3144 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 3145 * zoomScale)) + mScrollX; 3146 int titleHeight = getTitleHeight(); 3147 int ty = Math.round(scale 3148 * (mInitialScrollY + mZoomCenterY - titleHeight) 3149 - (mZoomCenterY - titleHeight)); 3150 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 3151 - titleHeight, getViewHeight(), Math.round(mContentHeight 3152 * zoomScale)) + titleHeight) + mScrollY; 3153 canvas.translate(tx, ty); 3154 canvas.scale(zoomScale, zoomScale); 3155 if (inEditingMode() && !mNeedToAdjustWebTextView 3156 && mZoomScale != 0) { 3157 // The WebTextView is up. Keep track of this so we can adjust 3158 // its size and placement when we finish zooming 3159 mNeedToAdjustWebTextView = true; 3160 // If it is in password mode, turn it off so it does not draw 3161 // misplaced. 3162 if (nativeFocusCandidateIsPassword()) { 3163 mWebTextView.setInPassword(false); 3164 } 3165 } 3166 } else { 3167 canvas.scale(mActualScale, mActualScale); 3168 } 3169 3170 mWebViewCore.drawContentPicture(canvas, color, 3171 (animateZoom || mPreviewZoomOnly), animateScroll); 3172 3173 drawLayers(canvas); 3174 3175 if (mNativeClass == 0) return; 3176 if (mShiftIsPressed && !(animateZoom || mPreviewZoomOnly)) { 3177 if (mTouchSelection || mExtendSelection) { 3178 nativeDrawSelectionRegion(canvas); 3179 } 3180 if (!mTouchSelection) { 3181 nativeDrawSelectionPointer(canvas, mInvActualScale, mSelectX, 3182 mSelectY - getTitleHeight(), mExtendSelection); 3183 } 3184 } else if (drawCursorRing) { 3185 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3186 mTouchMode = TOUCH_SHORTPRESS_MODE; 3187 HitTestResult hitTest = getHitTestResult(); 3188 if (mPreventLongPress || (hitTest != null && 3189 hitTest.mType != HitTestResult.UNKNOWN_TYPE)) { 3190 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3191 .obtainMessage(SWITCH_TO_LONGPRESS), 3192 LONG_PRESS_TIMEOUT); 3193 } 3194 } 3195 nativeDrawCursorRing(canvas); 3196 } 3197 // When the FindDialog is up, only draw the matches if we are not in 3198 // the process of scrolling them into view. 3199 if (mFindIsUp && !animateScroll) { 3200 nativeDrawMatches(canvas); 3201 } 3202 if (mFocusSizeChanged) { 3203 mFocusSizeChanged = false; 3204 // If we are zooming, this will get handled above, when the zoom 3205 // finishes. We also do not need to do this unless the WebTextView 3206 // is showing. 3207 if (!animateZoom && inEditingMode()) { 3208 didUpdateTextViewBounds(true); 3209 } 3210 } 3211 } 3212 3213 // draw history 3214 private boolean mDrawHistory = false; 3215 private Picture mHistoryPicture = null; 3216 private int mHistoryWidth = 0; 3217 private int mHistoryHeight = 0; 3218 3219 // Only check the flag, can be called from WebCore thread 3220 boolean drawHistory() { 3221 return mDrawHistory; 3222 } 3223 3224 // Should only be called in UI thread 3225 void switchOutDrawHistory() { 3226 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3227 if (mDrawHistory && mWebViewCore.pictureReady()) { 3228 mDrawHistory = false; 3229 invalidate(); 3230 int oldScrollX = mScrollX; 3231 int oldScrollY = mScrollY; 3232 mScrollX = pinLocX(mScrollX); 3233 mScrollY = pinLocY(mScrollY); 3234 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3235 mUserScroll = false; 3236 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3237 oldScrollY); 3238 } 3239 sendOurVisibleRect(); 3240 } 3241 } 3242 3243 WebViewCore.CursorData cursorData() { 3244 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3245 result.mMoveGeneration = nativeMoveGeneration(); 3246 result.mFrame = nativeCursorFramePointer(); 3247 Point position = nativeCursorPosition(); 3248 result.mX = position.x; 3249 result.mY = position.y; 3250 return result; 3251 } 3252 3253 /** 3254 * Delete text from start to end in the focused textfield. If there is no 3255 * focus, or if start == end, silently fail. If start and end are out of 3256 * order, swap them. 3257 * @param start Beginning of selection to delete. 3258 * @param end End of selection to delete. 3259 */ 3260 /* package */ void deleteSelection(int start, int end) { 3261 mTextGeneration++; 3262 WebViewCore.TextSelectionData data 3263 = new WebViewCore.TextSelectionData(start, end); 3264 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3265 data); 3266 } 3267 3268 /** 3269 * Set the selection to (start, end) in the focused textfield. If start and 3270 * end are out of order, swap them. 3271 * @param start Beginning of selection. 3272 * @param end End of selection. 3273 */ 3274 /* package */ void setSelection(int start, int end) { 3275 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3276 } 3277 3278 @Override 3279 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3280 InputConnection connection = super.onCreateInputConnection(outAttrs); 3281 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3282 return connection; 3283 } 3284 3285 /** 3286 * Called in response to a message from webkit telling us that the soft 3287 * keyboard should be launched. 3288 */ 3289 private void displaySoftKeyboard(boolean isTextView) { 3290 InputMethodManager imm = (InputMethodManager) 3291 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3292 3293 if (isTextView) { 3294 rebuildWebTextView(); 3295 if (!inEditingMode()) return; 3296 imm.showSoftInput(mWebTextView, 0); 3297 // bring it back to the default scale so that user can enter text 3298 if (mActualScale < mDefaultScale) { 3299 mInZoomOverview = false; 3300 mZoomCenterX = mLastTouchX; 3301 mZoomCenterY = mLastTouchY; 3302 // do not change text wrap scale so that there is no reflow 3303 setNewZoomScale(mDefaultScale, false, false); 3304 didUpdateTextViewBounds(true); 3305 } 3306 } 3307 else { // used by plugins 3308 imm.showSoftInput(this, 0); 3309 } 3310 } 3311 3312 // Called by WebKit to instruct the UI to hide the keyboard 3313 private void hideSoftKeyboard() { 3314 InputMethodManager imm = (InputMethodManager) 3315 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3316 3317 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3318 } 3319 3320 /* 3321 * This method checks the current focus and cursor and potentially rebuilds 3322 * mWebTextView to have the appropriate properties, such as password, 3323 * multiline, and what text it contains. It also removes it if necessary. 3324 */ 3325 /* package */ void rebuildWebTextView() { 3326 // If the WebView does not have focus, do nothing until it gains focus. 3327 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3328 return; 3329 } 3330 boolean alreadyThere = inEditingMode(); 3331 // inEditingMode can only return true if mWebTextView is non-null, 3332 // so we can safely call remove() if (alreadyThere) 3333 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3334 if (alreadyThere) { 3335 mWebTextView.remove(); 3336 } 3337 return; 3338 } 3339 // At this point, we know we have found an input field, so go ahead 3340 // and create the WebTextView if necessary. 3341 if (mWebTextView == null) { 3342 mWebTextView = new WebTextView(mContext, WebView.this); 3343 // Initialize our generation number. 3344 mTextGeneration = 0; 3345 } 3346 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3347 contentToViewDimension(nativeFocusCandidateTextSize())); 3348 Rect visibleRect = new Rect(); 3349 calcOurContentVisibleRect(visibleRect); 3350 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3351 // should be in content coordinates. 3352 Rect bounds = nativeFocusCandidateNodeBounds(); 3353 Rect vBox = contentToViewRect(bounds); 3354 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3355 if (!Rect.intersects(bounds, visibleRect)) { 3356 mWebTextView.bringIntoView(); 3357 } 3358 String text = nativeFocusCandidateText(); 3359 int nodePointer = nativeFocusCandidatePointer(); 3360 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3361 // It is possible that we have the same textfield, but it has moved, 3362 // i.e. In the case of opening/closing the screen. 3363 // In that case, we need to set the dimensions, but not the other 3364 // aspects. 3365 // If the text has been changed by webkit, update it. However, if 3366 // there has been more UI text input, ignore it. We will receive 3367 // another update when that text is recognized. 3368 if (text != null && !text.equals(mWebTextView.getText().toString()) 3369 && nativeTextGeneration() == mTextGeneration) { 3370 mWebTextView.setTextAndKeepSelection(text); 3371 } 3372 } else { 3373 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3374 Gravity.RIGHT : Gravity.NO_GRAVITY); 3375 // This needs to be called before setType, which may call 3376 // requestFormData, and it needs to have the correct nodePointer. 3377 mWebTextView.setNodePointer(nodePointer); 3378 mWebTextView.setType(nativeFocusCandidateType()); 3379 if (null == text) { 3380 if (DebugFlags.WEB_VIEW) { 3381 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3382 } 3383 text = ""; 3384 } 3385 mWebTextView.setTextAndKeepSelection(text); 3386 InputMethodManager imm = InputMethodManager.peekInstance(); 3387 if (imm != null && imm.isActive(mWebTextView)) { 3388 imm.restartInput(mWebTextView); 3389 } 3390 } 3391 mWebTextView.requestFocus(); 3392 } 3393 3394 /** 3395 * Called by WebTextView to find saved form data associated with the 3396 * textfield 3397 * @param name Name of the textfield. 3398 * @param nodePointer Pointer to the node of the textfield, so it can be 3399 * compared to the currently focused textfield when the data is 3400 * retrieved. 3401 */ 3402 /* package */ void requestFormData(String name, int nodePointer) { 3403 if (mWebViewCore.getSettings().getSaveFormData()) { 3404 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3405 update.arg1 = nodePointer; 3406 RequestFormData updater = new RequestFormData(name, getUrl(), 3407 update); 3408 Thread t = new Thread(updater); 3409 t.start(); 3410 } 3411 } 3412 3413 /** 3414 * Pass a message to find out the <label> associated with the <input> 3415 * identified by nodePointer 3416 * @param framePointer Pointer to the frame containing the <input> node 3417 * @param nodePointer Pointer to the node for which a <label> is desired. 3418 */ 3419 /* package */ void requestLabel(int framePointer, int nodePointer) { 3420 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3421 nodePointer); 3422 } 3423 3424 /* 3425 * This class requests an Adapter for the WebTextView which shows past 3426 * entries stored in the database. It is a Runnable so that it can be done 3427 * in its own thread, without slowing down the UI. 3428 */ 3429 private class RequestFormData implements Runnable { 3430 private String mName; 3431 private String mUrl; 3432 private Message mUpdateMessage; 3433 3434 public RequestFormData(String name, String url, Message msg) { 3435 mName = name; 3436 mUrl = url; 3437 mUpdateMessage = msg; 3438 } 3439 3440 public void run() { 3441 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3442 if (pastEntries.size() > 0) { 3443 AutoCompleteAdapter adapter = new 3444 AutoCompleteAdapter(mContext, pastEntries); 3445 mUpdateMessage.obj = adapter; 3446 mUpdateMessage.sendToTarget(); 3447 } 3448 } 3449 } 3450 3451 /** 3452 * Dump the display tree to "/sdcard/displayTree.txt" 3453 * 3454 * @hide debug only 3455 */ 3456 public void dumpDisplayTree() { 3457 nativeDumpDisplayTree(getUrl()); 3458 } 3459 3460 /** 3461 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 3462 * "/sdcard/domTree.txt" 3463 * 3464 * @hide debug only 3465 */ 3466 public void dumpDomTree(boolean toFile) { 3467 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 3468 } 3469 3470 /** 3471 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 3472 * to "/sdcard/renderTree.txt" 3473 * 3474 * @hide debug only 3475 */ 3476 public void dumpRenderTree(boolean toFile) { 3477 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 3478 } 3479 3480 /** 3481 * Dump the V8 counters to standard output. 3482 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 3483 * true. Otherwise, this will do nothing. 3484 * 3485 * @hide debug only 3486 */ 3487 public void dumpV8Counters() { 3488 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 3489 } 3490 3491 // This is used to determine long press with the center key. Does not 3492 // affect long press with the trackball/touch. 3493 private boolean mGotCenterDown = false; 3494 3495 @Override 3496 public boolean onKeyDown(int keyCode, KeyEvent event) { 3497 if (DebugFlags.WEB_VIEW) { 3498 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3499 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3500 } 3501 3502 if (mNativeClass == 0) { 3503 return false; 3504 } 3505 3506 // do this hack up front, so it always works, regardless of touch-mode 3507 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3508 mAutoRedraw = !mAutoRedraw; 3509 if (mAutoRedraw) { 3510 invalidate(); 3511 } 3512 return true; 3513 } 3514 3515 // Bubble up the key event if 3516 // 1. it is a system key; or 3517 // 2. the host application wants to handle it; 3518 if (event.isSystem() 3519 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3520 return false; 3521 } 3522 3523 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3524 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3525 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3526 setUpSelectXY(); 3527 } 3528 3529 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3530 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3531 // always handle the navigation keys in the UI thread 3532 switchOutDrawHistory(); 3533 if (mShiftIsPressed) { 3534 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 3535 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 3536 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 3537 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 3538 int multiplier = event.getRepeatCount() + 1; 3539 moveSelection(xRate * multiplier, yRate * multiplier); 3540 return true; 3541 } 3542 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3543 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3544 return true; 3545 } 3546 // Bubble up the key event as WebView doesn't handle it 3547 return false; 3548 } 3549 3550 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3551 switchOutDrawHistory(); 3552 if (event.getRepeatCount() == 0) { 3553 if (mShiftIsPressed) { 3554 return true; // discard press if copy in progress 3555 } 3556 mGotCenterDown = true; 3557 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3558 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3559 // Already checked mNativeClass, so we do not need to check it 3560 // again. 3561 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3562 return true; 3563 } 3564 // Bubble up the key event as WebView doesn't handle it 3565 return false; 3566 } 3567 3568 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3569 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3570 // turn off copy select if a shift-key combo is pressed 3571 mExtendSelection = mShiftIsPressed = false; 3572 if (mTouchMode == TOUCH_SELECT_MODE) { 3573 mTouchMode = TOUCH_INIT_MODE; 3574 } 3575 } 3576 3577 if (getSettings().getNavDump()) { 3578 switch (keyCode) { 3579 case KeyEvent.KEYCODE_4: 3580 dumpDisplayTree(); 3581 break; 3582 case KeyEvent.KEYCODE_5: 3583 case KeyEvent.KEYCODE_6: 3584 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 3585 break; 3586 case KeyEvent.KEYCODE_7: 3587 case KeyEvent.KEYCODE_8: 3588 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 3589 break; 3590 case KeyEvent.KEYCODE_9: 3591 nativeInstrumentReport(); 3592 return true; 3593 } 3594 } 3595 3596 if (nativeCursorIsTextInput()) { 3597 // This message will put the node in focus, for the DOM's notion 3598 // of focus, and make the focuscontroller active 3599 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3600 nativeCursorNodePointer()); 3601 // This will bring up the WebTextView and put it in focus, for 3602 // our view system's notion of focus 3603 rebuildWebTextView(); 3604 // Now we need to pass the event to it 3605 if (inEditingMode()) { 3606 mWebTextView.setDefaultSelection(); 3607 return mWebTextView.dispatchKeyEvent(event); 3608 } 3609 } else if (nativeHasFocusNode()) { 3610 // In this case, the cursor is not on a text input, but the focus 3611 // might be. Check it, and if so, hand over to the WebTextView. 3612 rebuildWebTextView(); 3613 if (inEditingMode()) { 3614 return mWebTextView.dispatchKeyEvent(event); 3615 } 3616 } 3617 3618 // TODO: should we pass all the keys to DOM or check the meta tag 3619 if (nativeCursorWantsKeyEvents() || true) { 3620 // pass the key to DOM 3621 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3622 // return true as DOM handles the key 3623 return true; 3624 } 3625 3626 // Bubble up the key event as WebView doesn't handle it 3627 return false; 3628 } 3629 3630 @Override 3631 public boolean onKeyUp(int keyCode, KeyEvent event) { 3632 if (DebugFlags.WEB_VIEW) { 3633 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3634 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3635 } 3636 3637 if (mNativeClass == 0) { 3638 return false; 3639 } 3640 3641 // special CALL handling when cursor node's href is "tel:XXX" 3642 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3643 String text = nativeCursorText(); 3644 if (!nativeCursorIsTextInput() && text != null 3645 && text.startsWith(SCHEME_TEL)) { 3646 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3647 getContext().startActivity(intent); 3648 return true; 3649 } 3650 } 3651 3652 // Bubble up the key event if 3653 // 1. it is a system key; or 3654 // 2. the host application wants to handle it; 3655 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3656 return false; 3657 } 3658 3659 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3660 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3661 if (commitCopy()) { 3662 return true; 3663 } 3664 } 3665 3666 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3667 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3668 // always handle the navigation keys in the UI thread 3669 // Bubble up the key event as WebView doesn't handle it 3670 return false; 3671 } 3672 3673 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3674 // remove the long press message first 3675 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3676 mGotCenterDown = false; 3677 3678 if (mShiftIsPressed) { 3679 if (mExtendSelection) { 3680 commitCopy(); 3681 } else { 3682 mExtendSelection = true; 3683 invalidate(); // draw the i-beam instead of the arrow 3684 } 3685 return true; // discard press if copy in progress 3686 } 3687 3688 // perform the single click 3689 Rect visibleRect = sendOurVisibleRect(); 3690 // Note that sendOurVisibleRect calls viewToContent, so the 3691 // coordinates should be in content coordinates. 3692 if (!nativeCursorIntersects(visibleRect)) { 3693 return false; 3694 } 3695 WebViewCore.CursorData data = cursorData(); 3696 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3697 playSoundEffect(SoundEffectConstants.CLICK); 3698 if (nativeCursorIsTextInput()) { 3699 rebuildWebTextView(); 3700 centerKeyPressOnTextField(); 3701 if (inEditingMode()) { 3702 mWebTextView.setDefaultSelection(); 3703 } 3704 return true; 3705 } 3706 nativeSetFollowedLink(true); 3707 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 3708 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3709 nativeCursorNodePointer()); 3710 } 3711 return true; 3712 } 3713 3714 // TODO: should we pass all the keys to DOM or check the meta tag 3715 if (nativeCursorWantsKeyEvents() || true) { 3716 // pass the key to DOM 3717 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3718 // return true as DOM handles the key 3719 return true; 3720 } 3721 3722 // Bubble up the key event as WebView doesn't handle it 3723 return false; 3724 } 3725 3726 private void setUpSelectXY() { 3727 mExtendSelection = false; 3728 mShiftIsPressed = true; 3729 if (nativeHasCursorNode()) { 3730 Rect rect = nativeCursorNodeBounds(); 3731 mSelectX = contentToViewX(rect.left); 3732 mSelectY = contentToViewY(rect.top); 3733 } else if (mLastTouchY > getVisibleTitleHeight()) { 3734 mSelectX = mScrollX + (int) mLastTouchX; 3735 mSelectY = mScrollY + (int) mLastTouchY; 3736 } else { 3737 mSelectX = mScrollX + getViewWidth() / 2; 3738 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 3739 } 3740 nativeHideCursor(); 3741 } 3742 3743 public void emulateShiftHeld() { 3744 if (0 == mNativeClass) return; // client isn't initialized 3745 setUpSelectXY(); 3746 } 3747 3748 private boolean commitCopy() { 3749 boolean copiedSomething = false; 3750 if (mExtendSelection) { 3751 String selection = nativeGetSelection(); 3752 if (selection != "") { 3753 if (DebugFlags.WEB_VIEW) { 3754 Log.v(LOGTAG, "commitCopy \"" + selection + "\""); 3755 } 3756 Toast.makeText(mContext 3757 , com.android.internal.R.string.text_copied 3758 , Toast.LENGTH_SHORT).show(); 3759 copiedSomething = true; 3760 try { 3761 IClipboard clip = IClipboard.Stub.asInterface( 3762 ServiceManager.getService("clipboard")); 3763 clip.setClipboardText(selection); 3764 } catch (android.os.RemoteException e) { 3765 Log.e(LOGTAG, "Clipboard failed", e); 3766 } 3767 } 3768 mExtendSelection = false; 3769 } 3770 mShiftIsPressed = false; 3771 invalidate(); // remove selection region and pointer 3772 if (mTouchMode == TOUCH_SELECT_MODE) { 3773 mTouchMode = TOUCH_INIT_MODE; 3774 } 3775 return copiedSomething; 3776 } 3777 3778 @Override 3779 protected void onAttachedToWindow() { 3780 super.onAttachedToWindow(); 3781 if (hasWindowFocus()) onWindowFocusChanged(true); 3782 } 3783 3784 @Override 3785 protected void onDetachedFromWindow() { 3786 clearTextEntry(); 3787 super.onDetachedFromWindow(); 3788 // Clean up the zoom controller 3789 mZoomButtonsController.setVisible(false); 3790 } 3791 3792 /** 3793 * @deprecated WebView no longer needs to implement 3794 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3795 */ 3796 @Deprecated 3797 public void onChildViewAdded(View parent, View child) {} 3798 3799 /** 3800 * @deprecated WebView no longer needs to implement 3801 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3802 */ 3803 @Deprecated 3804 public void onChildViewRemoved(View p, View child) {} 3805 3806 /** 3807 * @deprecated WebView should not have implemented 3808 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3809 * does nothing now. 3810 */ 3811 @Deprecated 3812 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3813 } 3814 3815 // To avoid drawing the cursor ring, and remove the TextView when our window 3816 // loses focus. 3817 @Override 3818 public void onWindowFocusChanged(boolean hasWindowFocus) { 3819 if (hasWindowFocus) { 3820 if (hasFocus()) { 3821 // If our window regained focus, and we have focus, then begin 3822 // drawing the cursor ring 3823 mDrawCursorRing = true; 3824 if (mNativeClass != 0) { 3825 nativeRecordButtons(true, false, true); 3826 if (inEditingMode()) { 3827 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3828 } 3829 } 3830 } else { 3831 // If our window gained focus, but we do not have it, do not 3832 // draw the cursor ring. 3833 mDrawCursorRing = false; 3834 // We do not call nativeRecordButtons here because we assume 3835 // that when we lost focus, or window focus, it got called with 3836 // false for the first parameter 3837 } 3838 } else { 3839 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3840 /* 3841 * The zoom controls come in their own window, so our window 3842 * loses focus. Our policy is to not draw the cursor ring if 3843 * our window is not focused, but this is an exception since 3844 * the user can still navigate the web page with the zoom 3845 * controls showing. 3846 */ 3847 // If our window has lost focus, stop drawing the cursor ring 3848 mDrawCursorRing = false; 3849 } 3850 mGotKeyDown = false; 3851 mShiftIsPressed = false; 3852 if (mNativeClass != 0) { 3853 nativeRecordButtons(false, false, true); 3854 } 3855 setFocusControllerInactive(); 3856 } 3857 invalidate(); 3858 super.onWindowFocusChanged(hasWindowFocus); 3859 } 3860 3861 /* 3862 * Pass a message to WebCore Thread, telling the WebCore::Page's 3863 * FocusController to be "inactive" so that it will 3864 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3865 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3866 */ 3867 /* package */ void setFocusControllerInactive() { 3868 // Do not need to also check whether mWebViewCore is null, because 3869 // mNativeClass is only set if mWebViewCore is non null 3870 if (mNativeClass == 0) return; 3871 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 3872 } 3873 3874 @Override 3875 protected void onFocusChanged(boolean focused, int direction, 3876 Rect previouslyFocusedRect) { 3877 if (DebugFlags.WEB_VIEW) { 3878 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3879 } 3880 if (focused) { 3881 // When we regain focus, if we have window focus, resume drawing 3882 // the cursor ring 3883 if (hasWindowFocus()) { 3884 mDrawCursorRing = true; 3885 if (mNativeClass != 0) { 3886 nativeRecordButtons(true, false, true); 3887 } 3888 //} else { 3889 // The WebView has gained focus while we do not have 3890 // windowfocus. When our window lost focus, we should have 3891 // called nativeRecordButtons(false...) 3892 } 3893 } else { 3894 // When we lost focus, unless focus went to the TextView (which is 3895 // true if we are in editing mode), stop drawing the cursor ring. 3896 if (!inEditingMode()) { 3897 mDrawCursorRing = false; 3898 if (mNativeClass != 0) { 3899 nativeRecordButtons(false, false, true); 3900 } 3901 setFocusControllerInactive(); 3902 } 3903 mGotKeyDown = false; 3904 } 3905 3906 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3907 } 3908 3909 /** 3910 * @hide 3911 */ 3912 @Override 3913 protected boolean setFrame(int left, int top, int right, int bottom) { 3914 boolean changed = super.setFrame(left, top, right, bottom); 3915 if (!changed && mHeightCanMeasure) { 3916 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 3917 // in WebViewCore after we get the first layout. We do call 3918 // requestLayout() when we get contentSizeChanged(). But the View 3919 // system won't call onSizeChanged if the dimension is not changed. 3920 // In this case, we need to call sendViewSizeZoom() explicitly to 3921 // notify the WebKit about the new dimensions. 3922 sendViewSizeZoom(); 3923 } 3924 return changed; 3925 } 3926 3927 private static class PostScale implements Runnable { 3928 final WebView mWebView; 3929 final boolean mUpdateTextWrap; 3930 3931 public PostScale(WebView webView, boolean updateTextWrap) { 3932 mWebView = webView; 3933 mUpdateTextWrap = updateTextWrap; 3934 } 3935 3936 public void run() { 3937 if (mWebView.mWebViewCore != null) { 3938 // we always force, in case our height changed, in which case we 3939 // still want to send the notification over to webkit. 3940 mWebView.setNewZoomScale(mWebView.mActualScale, 3941 mUpdateTextWrap, true); 3942 } 3943 } 3944 } 3945 3946 @Override 3947 protected void onSizeChanged(int w, int h, int ow, int oh) { 3948 super.onSizeChanged(w, h, ow, oh); 3949 // Center zooming to the center of the screen. 3950 if (mZoomScale == 0) { // unless we're already zooming 3951 // To anchor at top left corner. 3952 mZoomCenterX = 0; 3953 mZoomCenterY = getVisibleTitleHeight(); 3954 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 3955 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 3956 } 3957 3958 // adjust the max viewport width depending on the view dimensions. This 3959 // is to ensure the scaling is not going insane. So do not shrink it if 3960 // the view size is temporarily smaller, e.g. when soft keyboard is up. 3961 int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE); 3962 if (newMaxViewportWidth > sMaxViewportWidth) { 3963 sMaxViewportWidth = newMaxViewportWidth; 3964 } 3965 3966 // update mMinZoomScale if the minimum zoom scale is not fixed 3967 if (!mMinZoomScaleFixed) { 3968 // when change from narrow screen to wide screen, the new viewWidth 3969 // can be wider than the old content width. We limit the minimum 3970 // scale to 1.0f. The proper minimum scale will be calculated when 3971 // the new picture shows up. 3972 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 3973 / (mDrawHistory ? mHistoryPicture.getWidth() 3974 : mZoomOverviewWidth)); 3975 if (mInitialScaleInPercent > 0) { 3976 // limit the minZoomScale to the initialScale if it is set 3977 float initialScale = mInitialScaleInPercent / 100.0f; 3978 if (mMinZoomScale > initialScale) { 3979 mMinZoomScale = initialScale; 3980 } 3981 } 3982 } 3983 3984 // onSizeChanged() is called during WebView layout. And any 3985 // requestLayout() is blocked during layout. As setNewZoomScale() will 3986 // call its child View to reposition itself through ViewManager's 3987 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 3988 // <b/> 3989 // only update the text wrap scale if width changed. 3990 post(new PostScale(this, w != ow)); 3991 } 3992 3993 @Override 3994 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 3995 super.onScrollChanged(l, t, oldl, oldt); 3996 sendOurVisibleRect(); 3997 } 3998 3999 4000 @Override 4001 public boolean dispatchKeyEvent(KeyEvent event) { 4002 boolean dispatch = true; 4003 4004 if (!inEditingMode()) { 4005 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4006 mGotKeyDown = true; 4007 } else { 4008 if (!mGotKeyDown) { 4009 /* 4010 * We got a key up for which we were not the recipient of 4011 * the original key down. Don't give it to the view. 4012 */ 4013 dispatch = false; 4014 } 4015 mGotKeyDown = false; 4016 } 4017 } 4018 4019 if (dispatch) { 4020 return super.dispatchKeyEvent(event); 4021 } else { 4022 // We didn't dispatch, so let something else handle the key 4023 return false; 4024 } 4025 } 4026 4027 // Here are the snap align logic: 4028 // 1. If it starts nearly horizontally or vertically, snap align; 4029 // 2. If there is a dramitic direction change, let it go; 4030 // 3. If there is a same direction back and forth, lock it. 4031 4032 // adjustable parameters 4033 private int mMinLockSnapReverseDistance; 4034 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4035 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4036 4037 private static int sign(float x) { 4038 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4039 } 4040 4041 // if the page can scroll <= this value, we won't allow the drag tracker 4042 // to have any effect. 4043 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4044 4045 private class DragTrackerHandler { 4046 private final DragTracker mProxy; 4047 private final float mStartY, mStartX; 4048 private final float mMinDY, mMinDX; 4049 private final float mMaxDY, mMaxDX; 4050 private float mCurrStretchY, mCurrStretchX; 4051 private int mSX, mSY; 4052 private Interpolator mInterp; 4053 private float[] mXY = new float[2]; 4054 4055 // inner (non-state) classes can't have enums :( 4056 private static final int DRAGGING_STATE = 0; 4057 private static final int ANIMATING_STATE = 1; 4058 private static final int FINISHED_STATE = 2; 4059 private int mState; 4060 4061 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4062 mProxy = proxy; 4063 4064 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4065 int viewTop = getScrollY(); 4066 int viewBottom = viewTop + getHeight(); 4067 4068 mStartY = y; 4069 mMinDY = -viewTop; 4070 mMaxDY = docBottom - viewBottom; 4071 4072 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4073 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4074 " up/down= " + mMinDY + " " + mMaxDY); 4075 } 4076 4077 int docRight = computeHorizontalScrollRange(); 4078 int viewLeft = getScrollX(); 4079 int viewRight = viewLeft + getWidth(); 4080 mStartX = x; 4081 mMinDX = -viewLeft; 4082 mMaxDX = docRight - viewRight; 4083 4084 mState = DRAGGING_STATE; 4085 mProxy.onStartDrag(x, y); 4086 4087 // ensure we buildBitmap at least once 4088 mSX = -99999; 4089 } 4090 4091 private float computeStretch(float delta, float min, float max) { 4092 float stretch = 0; 4093 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4094 if (delta < min) { 4095 stretch = delta - min; 4096 } else if (delta > max) { 4097 stretch = delta - max; 4098 } 4099 } 4100 return stretch; 4101 } 4102 4103 public void dragTo(float x, float y) { 4104 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4105 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4106 4107 if ((mSnapScrollMode & SNAP_X) != 0) { 4108 sy = 0; 4109 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4110 sx = 0; 4111 } 4112 4113 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4114 mCurrStretchX = sx; 4115 mCurrStretchY = sy; 4116 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4117 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4118 " " + sy); 4119 } 4120 if (mProxy.onStretchChange(sx, sy)) { 4121 invalidate(); 4122 } 4123 } 4124 } 4125 4126 public void stopDrag() { 4127 final int DURATION = 200; 4128 int now = (int)SystemClock.uptimeMillis(); 4129 mInterp = new Interpolator(2); 4130 mXY[0] = mCurrStretchX; 4131 mXY[1] = mCurrStretchY; 4132 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4133 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4134 mInterp.setKeyFrame(0, now, mXY, blend); 4135 float[] zerozero = new float[] { 0, 0 }; 4136 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4137 mState = ANIMATING_STATE; 4138 4139 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4140 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4141 } 4142 } 4143 4144 // Call this after each draw. If it ruturns null, the tracker is done 4145 public boolean isFinished() { 4146 return mState == FINISHED_STATE; 4147 } 4148 4149 private int hiddenHeightOfTitleBar() { 4150 return getTitleHeight() - getVisibleTitleHeight(); 4151 } 4152 4153 // need a way to know if 565 or 8888 is the right config for 4154 // capturing the display and giving it to the drag proxy 4155 private Bitmap.Config offscreenBitmapConfig() { 4156 // hard code 565 for now 4157 return Bitmap.Config.RGB_565; 4158 } 4159 4160 /* If the tracker draws, then this returns true, otherwise it will 4161 return false, and draw nothing. 4162 */ 4163 public boolean draw(Canvas canvas) { 4164 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4165 int sx = getScrollX(); 4166 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4167 if (mSX != sx || mSY != sy) { 4168 buildBitmap(sx, sy); 4169 mSX = sx; 4170 mSY = sy; 4171 } 4172 4173 if (mState == ANIMATING_STATE) { 4174 Interpolator.Result result = mInterp.timeToValues(mXY); 4175 if (result == Interpolator.Result.FREEZE_END) { 4176 mState = FINISHED_STATE; 4177 return false; 4178 } else { 4179 mProxy.onStretchChange(mXY[0], mXY[1]); 4180 invalidate(); 4181 // fall through to the draw 4182 } 4183 } 4184 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4185 canvas.translate(sx, sy); 4186 mProxy.onDraw(canvas); 4187 canvas.restoreToCount(count); 4188 return true; 4189 } 4190 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4191 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4192 mCurrStretchX + " " + mCurrStretchY); 4193 } 4194 return false; 4195 } 4196 4197 private void buildBitmap(int sx, int sy) { 4198 int w = getWidth(); 4199 int h = getViewHeight(); 4200 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4201 Canvas canvas = new Canvas(bm); 4202 canvas.translate(-sx, -sy); 4203 drawContent(canvas); 4204 4205 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4206 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4207 " " + sy + " " + w + " " + h); 4208 } 4209 mProxy.onBitmapChange(bm); 4210 } 4211 } 4212 4213 /** @hide */ 4214 public static class DragTracker { 4215 public void onStartDrag(float x, float y) {} 4216 public boolean onStretchChange(float sx, float sy) { 4217 // return true to have us inval the view 4218 return false; 4219 } 4220 public void onStopDrag() {} 4221 public void onBitmapChange(Bitmap bm) {} 4222 public void onDraw(Canvas canvas) {} 4223 } 4224 4225 /** @hide */ 4226 public DragTracker getDragTracker() { 4227 return mDragTracker; 4228 } 4229 4230 /** @hide */ 4231 public void setDragTracker(DragTracker tracker) { 4232 mDragTracker = tracker; 4233 } 4234 4235 private DragTracker mDragTracker; 4236 private DragTrackerHandler mDragTrackerHandler; 4237 4238 private class ScaleDetectorListener implements 4239 ScaleGestureDetector.OnScaleGestureListener { 4240 4241 public boolean onScaleBegin(ScaleGestureDetector detector) { 4242 // cancel the single touch handling 4243 cancelTouch(); 4244 if (mZoomButtonsController.isVisible()) { 4245 mZoomButtonsController.setVisible(false); 4246 } 4247 // reset the zoom overview mode so that the page won't auto grow 4248 mInZoomOverview = false; 4249 // If it is in password mode, turn it off so it does not draw 4250 // misplaced. 4251 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4252 mWebTextView.setInPassword(false); 4253 } 4254 return true; 4255 } 4256 4257 public void onScaleEnd(ScaleGestureDetector detector) { 4258 if (mPreviewZoomOnly) { 4259 mPreviewZoomOnly = false; 4260 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4261 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4262 // don't reflow when zoom in; when zoom out, do reflow if the 4263 // new scale is almost minimum scale; 4264 boolean reflowNow = (mActualScale - mMinZoomScale <= 0.01f) 4265 || ((mActualScale <= 0.8 * mTextWrapScale)); 4266 // force zoom after mPreviewZoomOnly is set to false so that the 4267 // new view size will be passed to the WebKit 4268 setNewZoomScale(mActualScale, reflowNow, true); 4269 // call invalidate() to draw without zoom filter 4270 invalidate(); 4271 } 4272 // adjust the edit text view if needed 4273 if (inEditingMode() && didUpdateTextViewBounds(false) 4274 && nativeFocusCandidateIsPassword()) { 4275 // If it is a password field, start drawing the 4276 // WebTextView once again. 4277 mWebTextView.setInPassword(true); 4278 } 4279 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4280 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4281 // may trigger the unwanted fling. 4282 mTouchMode = TOUCH_PINCH_DRAG; 4283 startTouch(detector.getFocusX(), detector.getFocusY(), 4284 mLastTouchTime); 4285 } 4286 4287 public boolean onScale(ScaleGestureDetector detector) { 4288 float scale = (float) (Math.round(detector.getScaleFactor() 4289 * mActualScale * 100) / 100.0); 4290 if (Math.abs(scale - mActualScale) >= PREVIEW_SCALE_INCREMENT) { 4291 mPreviewZoomOnly = true; 4292 // limit the scale change per step 4293 if (scale > mActualScale) { 4294 scale = Math.min(scale, mActualScale * 1.25f); 4295 } else { 4296 scale = Math.max(scale, mActualScale * 0.8f); 4297 } 4298 mZoomCenterX = detector.getFocusX(); 4299 mZoomCenterY = detector.getFocusY(); 4300 setNewZoomScale(scale, false, false); 4301 invalidate(); 4302 return true; 4303 } 4304 return false; 4305 } 4306 } 4307 4308 @Override 4309 public boolean onTouchEvent(MotionEvent ev) { 4310 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4311 return false; 4312 } 4313 4314 if (DebugFlags.WEB_VIEW) { 4315 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4316 + mTouchMode); 4317 } 4318 4319 int action; 4320 float x, y; 4321 long eventTime = ev.getEventTime(); 4322 4323 // FIXME: we may consider to give WebKit an option to handle multi-touch 4324 // events later. 4325 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 4326 if (mMinZoomScale < mMaxZoomScale) { 4327 mScaleDetector.onTouchEvent(ev); 4328 if (mScaleDetector.isInProgress()) { 4329 mLastTouchTime = eventTime; 4330 return true; 4331 } 4332 x = mScaleDetector.getFocusX(); 4333 y = mScaleDetector.getFocusY(); 4334 action = ev.getAction() & MotionEvent.ACTION_MASK; 4335 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4336 cancelTouch(); 4337 action = MotionEvent.ACTION_DOWN; 4338 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4339 // set mLastTouchX/Y to the remaining point 4340 mLastTouchX = x; 4341 mLastTouchY = y; 4342 } else if (action == MotionEvent.ACTION_MOVE) { 4343 // negative x or y indicate it is on the edge, skip it. 4344 if (x < 0 || y < 0) { 4345 return true; 4346 } 4347 } 4348 } else { 4349 // if the page disallow zoom, skip multi-pointer action 4350 return true; 4351 } 4352 } else { 4353 action = ev.getAction(); 4354 x = ev.getX(); 4355 y = ev.getY(); 4356 } 4357 4358 // Due to the touch screen edge effect, a touch closer to the edge 4359 // always snapped to the edge. As getViewWidth() can be different from 4360 // getWidth() due to the scrollbar, adjusting the point to match 4361 // getViewWidth(). Same applied to the height. 4362 if (x > getViewWidth() - 1) { 4363 x = getViewWidth() - 1; 4364 } 4365 if (y > getViewHeightWithTitle() - 1) { 4366 y = getViewHeightWithTitle() - 1; 4367 } 4368 4369 // pass the touch events from UI thread to WebCore thread 4370 if (mForwardTouchEvents && (action != MotionEvent.ACTION_MOVE 4371 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 4372 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 4373 ted.mAction = action; 4374 ted.mX = viewToContentX((int) x + mScrollX); 4375 ted.mY = viewToContentY((int) y + mScrollY); 4376 ted.mEventTime = eventTime; 4377 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4378 mLastSentTouchTime = eventTime; 4379 } 4380 4381 float fDeltaX = mLastTouchX - x; 4382 float fDeltaY = mLastTouchY - y; 4383 int deltaX = (int) fDeltaX; 4384 int deltaY = (int) fDeltaY; 4385 4386 switch (action) { 4387 case MotionEvent.ACTION_DOWN: { 4388 mPreventDrag = PREVENT_DRAG_NO; 4389 if (!mScroller.isFinished()) { 4390 // stop the current scroll animation, but if this is 4391 // the start of a fling, allow it to add to the current 4392 // fling's velocity 4393 mScroller.abortAnimation(); 4394 mTouchMode = TOUCH_DRAG_START_MODE; 4395 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 4396 } else if (mShiftIsPressed) { 4397 mSelectX = mScrollX + (int) x; 4398 mSelectY = mScrollY + (int) y; 4399 mTouchMode = TOUCH_SELECT_MODE; 4400 if (DebugFlags.WEB_VIEW) { 4401 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 4402 } 4403 nativeMoveSelection(viewToContentX(mSelectX), 4404 viewToContentY(mSelectY), false); 4405 mTouchSelection = mExtendSelection = true; 4406 invalidate(); // draw the i-beam instead of the arrow 4407 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4408 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4409 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4410 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4411 } else { 4412 // commit the short press action for the previous tap 4413 doShortPress(); 4414 // continue, mTouchMode should be still TOUCH_INIT_MODE 4415 } 4416 } else { 4417 mPreviewZoomOnly = false; 4418 mTouchMode = TOUCH_INIT_MODE; 4419 mPreventDrag = mForwardTouchEvents ? PREVENT_DRAG_MAYBE_YES 4420 : PREVENT_DRAG_NO; 4421 mPreventLongPress = false; 4422 mPreventDoubleTap = false; 4423 mWebViewCore.sendMessage( 4424 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4425 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4426 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 4427 (eventTime - mLastTouchUpTime), eventTime); 4428 } 4429 } 4430 // Trigger the link 4431 if (mTouchMode == TOUCH_INIT_MODE 4432 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4433 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4434 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 4435 } 4436 startTouch(x, y, eventTime); 4437 break; 4438 } 4439 case MotionEvent.ACTION_MOVE: { 4440 if (mTouchMode == TOUCH_DONE_MODE) { 4441 // no dragging during scroll zoom animation 4442 break; 4443 } 4444 mVelocityTracker.addMovement(ev); 4445 4446 if (mTouchMode != TOUCH_DRAG_MODE) { 4447 if (mTouchMode == TOUCH_SELECT_MODE) { 4448 mSelectX = mScrollX + (int) x; 4449 mSelectY = mScrollY + (int) y; 4450 if (DebugFlags.WEB_VIEW) { 4451 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 4452 } 4453 nativeMoveSelection(viewToContentX(mSelectX), 4454 viewToContentY(mSelectY), true); 4455 invalidate(); 4456 break; 4457 } 4458 if ((deltaX * deltaX + deltaY * deltaY) < mTouchSlopSquare) { 4459 break; 4460 } 4461 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 4462 // track mLastTouchTime as we may need to do fling at 4463 // ACTION_UP 4464 mLastTouchTime = eventTime; 4465 break; 4466 } 4467 if (mTouchMode == TOUCH_SHORTPRESS_MODE 4468 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4469 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4470 } else if (mTouchMode == TOUCH_INIT_MODE 4471 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4472 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4473 } 4474 if (mFullScreenHolder != null) { 4475 // in full screen mode, the WebView can't be panned. 4476 mTouchMode = TOUCH_DONE_MODE; 4477 break; 4478 } 4479 4480 // if it starts nearly horizontal or vertical, enforce it 4481 int ax = Math.abs(deltaX); 4482 int ay = Math.abs(deltaY); 4483 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4484 mSnapScrollMode = SNAP_X; 4485 mSnapPositive = deltaX > 0; 4486 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4487 mSnapScrollMode = SNAP_Y; 4488 mSnapPositive = deltaY > 0; 4489 } 4490 4491 mTouchMode = TOUCH_DRAG_MODE; 4492 mLastTouchX = x; 4493 mLastTouchY = y; 4494 fDeltaX = 0.0f; 4495 fDeltaY = 0.0f; 4496 deltaX = 0; 4497 deltaY = 0; 4498 4499 WebViewCore.reducePriority(); 4500 if (!mDragFromTextInput) { 4501 nativeHideCursor(); 4502 } 4503 WebSettings settings = getSettings(); 4504 if (settings.supportZoom() 4505 && settings.getBuiltInZoomControls() 4506 && !mZoomButtonsController.isVisible() 4507 && mMinZoomScale < mMaxZoomScale) { 4508 mZoomButtonsController.setVisible(true); 4509 int count = settings.getDoubleTapToastCount(); 4510 if (mInZoomOverview && count > 0) { 4511 settings.setDoubleTapToastCount(--count); 4512 Toast.makeText(mContext, 4513 com.android.internal.R.string.double_tap_toast, 4514 Toast.LENGTH_LONG).show(); 4515 } 4516 } 4517 } 4518 4519 // do pan 4520 int newScrollX = pinLocX(mScrollX + deltaX); 4521 int newDeltaX = newScrollX - mScrollX; 4522 if (deltaX != newDeltaX) { 4523 deltaX = newDeltaX; 4524 fDeltaX = (float) newDeltaX; 4525 } 4526 int newScrollY = pinLocY(mScrollY + deltaY); 4527 int newDeltaY = newScrollY - mScrollY; 4528 if (deltaY != newDeltaY) { 4529 deltaY = newDeltaY; 4530 fDeltaY = (float) newDeltaY; 4531 } 4532 boolean done = false; 4533 boolean keepScrollBarsVisible = false; 4534 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 4535 keepScrollBarsVisible = done = true; 4536 } else { 4537 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4538 int ax = Math.abs(deltaX); 4539 int ay = Math.abs(deltaY); 4540 if (mSnapScrollMode == SNAP_X) { 4541 // radical change means getting out of snap mode 4542 if (ay > MAX_SLOPE_FOR_DIAG * ax 4543 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4544 mSnapScrollMode = SNAP_NONE; 4545 } 4546 // reverse direction means lock in the snap mode 4547 if (ax > MAX_SLOPE_FOR_DIAG * ay && 4548 (mSnapPositive 4549 ? deltaX < -mMinLockSnapReverseDistance 4550 : deltaX > mMinLockSnapReverseDistance)) { 4551 mSnapScrollMode |= SNAP_LOCK; 4552 } 4553 } else { 4554 // radical change means getting out of snap mode 4555 if (ax > MAX_SLOPE_FOR_DIAG * ay 4556 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4557 mSnapScrollMode = SNAP_NONE; 4558 } 4559 // reverse direction means lock in the snap mode 4560 if (ay > MAX_SLOPE_FOR_DIAG * ax && 4561 (mSnapPositive 4562 ? deltaY < -mMinLockSnapReverseDistance 4563 : deltaY > mMinLockSnapReverseDistance)) { 4564 mSnapScrollMode |= SNAP_LOCK; 4565 } 4566 } 4567 } 4568 if (mSnapScrollMode != SNAP_NONE) { 4569 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 4570 deltaY = 0; 4571 } else { 4572 deltaX = 0; 4573 } 4574 } 4575 if ((deltaX | deltaY) != 0) { 4576 scrollBy(deltaX, deltaY); 4577 if (deltaX != 0) { 4578 mLastTouchX = x; 4579 } 4580 if (deltaY != 0) { 4581 mLastTouchY = y; 4582 } 4583 mHeldMotionless = MOTIONLESS_FALSE; 4584 } else { 4585 // keep the scrollbar on the screen even there is no 4586 // scroll 4587 keepScrollBarsVisible = true; 4588 } 4589 mLastTouchTime = eventTime; 4590 mUserScroll = true; 4591 } 4592 4593 if (!getSettings().getBuiltInZoomControls()) { 4594 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 4595 if (mZoomControls != null && showPlusMinus) { 4596 if (mZoomControls.getVisibility() == View.VISIBLE) { 4597 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4598 } else { 4599 mZoomControls.show(showPlusMinus, false); 4600 } 4601 mPrivateHandler.postDelayed(mZoomControlRunnable, 4602 ZOOM_CONTROLS_TIMEOUT); 4603 } 4604 } 4605 4606 if (mDragTrackerHandler != null) { 4607 mDragTrackerHandler.dragTo(x, y); 4608 } 4609 4610 if (keepScrollBarsVisible) { 4611 if (mHeldMotionless != MOTIONLESS_TRUE) { 4612 mHeldMotionless = MOTIONLESS_TRUE; 4613 invalidate(); 4614 } 4615 // keep the scrollbar on the screen even there is no scroll 4616 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 4617 false); 4618 // return false to indicate that we can't pan out of the 4619 // view space 4620 return !done; 4621 } 4622 break; 4623 } 4624 case MotionEvent.ACTION_UP: { 4625 if (mDragTrackerHandler != null) { 4626 mDragTrackerHandler.stopDrag(); 4627 } 4628 mLastTouchUpTime = eventTime; 4629 switch (mTouchMode) { 4630 case TOUCH_DOUBLE_TAP_MODE: // double tap 4631 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4632 mTouchMode = TOUCH_DONE_MODE; 4633 if (mPreventDoubleTap) { 4634 WebViewCore.TouchEventData ted 4635 = new WebViewCore.TouchEventData(); 4636 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 4637 ted.mX = viewToContentX((int) x + mScrollX); 4638 ted.mY = viewToContentY((int) y + mScrollY); 4639 ted.mEventTime = eventTime; 4640 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4641 } else if (mFullScreenHolder == null) { 4642 doDoubleTap(); 4643 } 4644 break; 4645 case TOUCH_SELECT_MODE: 4646 commitCopy(); 4647 mTouchSelection = false; 4648 break; 4649 case TOUCH_INIT_MODE: // tap 4650 case TOUCH_SHORTPRESS_START_MODE: 4651 case TOUCH_SHORTPRESS_MODE: 4652 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4653 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4654 if ((deltaX * deltaX + deltaY * deltaY) > mTouchSlopSquare) { 4655 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 4656 " WebCore's response for touch down."); 4657 if (mFullScreenHolder == null 4658 && (computeHorizontalScrollExtent() < computeHorizontalScrollRange() 4659 || computeVerticalScrollExtent() < computeVerticalScrollRange())) { 4660 // we will not rewrite drag code here, but we 4661 // will try fling if it applies. 4662 WebViewCore.reducePriority(); 4663 // fall through to TOUCH_DRAG_MODE 4664 } else { 4665 break; 4666 } 4667 } else { 4668 // mPreventDrag can be PREVENT_DRAG_MAYBE_YES in 4669 // TOUCH_INIT_MODE. To give WebCoreThread a little 4670 // more time to send PREVENT_TOUCH_ID, we check 4671 // again in responding RELEASE_SINGLE_TAP. 4672 if (mPreventDrag != PREVENT_DRAG_YES) { 4673 if (mTouchMode == TOUCH_INIT_MODE) { 4674 mPrivateHandler.sendMessageDelayed( 4675 mPrivateHandler.obtainMessage( 4676 RELEASE_SINGLE_TAP), 4677 ViewConfiguration.getDoubleTapTimeout()); 4678 } else { 4679 mTouchMode = TOUCH_DONE_MODE; 4680 doShortPress(); 4681 } 4682 } 4683 break; 4684 } 4685 case TOUCH_DRAG_MODE: 4686 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4687 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4688 mHeldMotionless = MOTIONLESS_TRUE; 4689 // redraw in high-quality, as we're done dragging 4690 invalidate(); 4691 // if the user waits a while w/o moving before the 4692 // up, we don't want to do a fling 4693 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4694 mVelocityTracker.addMovement(ev); 4695 doFling(); 4696 break; 4697 } 4698 mLastVelocity = 0; 4699 WebViewCore.resumePriority(); 4700 break; 4701 case TOUCH_DRAG_START_MODE: 4702 case TOUCH_DONE_MODE: 4703 // do nothing 4704 break; 4705 } 4706 // we also use mVelocityTracker == null to tell us that we are 4707 // not "moving around", so we can take the slower/prettier 4708 // mode in the drawing code 4709 if (mVelocityTracker != null) { 4710 mVelocityTracker.recycle(); 4711 mVelocityTracker = null; 4712 } 4713 break; 4714 } 4715 case MotionEvent.ACTION_CANCEL: { 4716 cancelTouch(); 4717 break; 4718 } 4719 } 4720 return true; 4721 } 4722 4723 private void startTouch(float x, float y, long eventTime) { 4724 // Remember where the motion event started 4725 mLastTouchX = x; 4726 mLastTouchY = y; 4727 mLastTouchTime = eventTime; 4728 mVelocityTracker = VelocityTracker.obtain(); 4729 mSnapScrollMode = SNAP_NONE; 4730 if (mDragTracker != null) { 4731 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 4732 } 4733 } 4734 4735 private void cancelTouch() { 4736 if (mDragTrackerHandler != null) { 4737 mDragTrackerHandler.stopDrag(); 4738 } 4739 // we also use mVelocityTracker == null to tell us that we are 4740 // not "moving around", so we can take the slower/prettier 4741 // mode in the drawing code 4742 if (mVelocityTracker != null) { 4743 mVelocityTracker.recycle(); 4744 mVelocityTracker = null; 4745 } 4746 if (mTouchMode == TOUCH_DRAG_MODE) { 4747 WebViewCore.resumePriority(); 4748 } 4749 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4750 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4751 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4752 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4753 mHeldMotionless = MOTIONLESS_TRUE; 4754 mTouchMode = TOUCH_DONE_MODE; 4755 nativeHideCursor(); 4756 } 4757 4758 private long mTrackballFirstTime = 0; 4759 private long mTrackballLastTime = 0; 4760 private float mTrackballRemainsX = 0.0f; 4761 private float mTrackballRemainsY = 0.0f; 4762 private int mTrackballXMove = 0; 4763 private int mTrackballYMove = 0; 4764 private boolean mExtendSelection = false; 4765 private boolean mTouchSelection = false; 4766 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4767 private static final int TRACKBALL_TIMEOUT = 200; 4768 private static final int TRACKBALL_WAIT = 100; 4769 private static final int TRACKBALL_SCALE = 400; 4770 private static final int TRACKBALL_SCROLL_COUNT = 5; 4771 private static final int TRACKBALL_MOVE_COUNT = 10; 4772 private static final int TRACKBALL_MULTIPLIER = 3; 4773 private static final int SELECT_CURSOR_OFFSET = 16; 4774 private int mSelectX = 0; 4775 private int mSelectY = 0; 4776 private boolean mFocusSizeChanged = false; 4777 private boolean mShiftIsPressed = false; 4778 private boolean mTrackballDown = false; 4779 private long mTrackballUpTime = 0; 4780 private long mLastCursorTime = 0; 4781 private Rect mLastCursorBounds; 4782 4783 // Set by default; BrowserActivity clears to interpret trackball data 4784 // directly for movement. Currently, the framework only passes 4785 // arrow key events, not trackball events, from one child to the next 4786 private boolean mMapTrackballToArrowKeys = true; 4787 4788 public void setMapTrackballToArrowKeys(boolean setMap) { 4789 mMapTrackballToArrowKeys = setMap; 4790 } 4791 4792 void resetTrackballTime() { 4793 mTrackballLastTime = 0; 4794 } 4795 4796 @Override 4797 public boolean onTrackballEvent(MotionEvent ev) { 4798 long time = ev.getEventTime(); 4799 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4800 if (ev.getY() > 0) pageDown(true); 4801 if (ev.getY() < 0) pageUp(true); 4802 return true; 4803 } 4804 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4805 if (mShiftIsPressed) { 4806 return true; // discard press if copy in progress 4807 } 4808 mTrackballDown = true; 4809 if (mNativeClass == 0) { 4810 return false; 4811 } 4812 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4813 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4814 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4815 nativeSelectBestAt(mLastCursorBounds); 4816 } 4817 if (DebugFlags.WEB_VIEW) { 4818 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4819 + " time=" + time 4820 + " mLastCursorTime=" + mLastCursorTime); 4821 } 4822 if (isInTouchMode()) requestFocusFromTouch(); 4823 return false; // let common code in onKeyDown at it 4824 } 4825 if (ev.getAction() == MotionEvent.ACTION_UP) { 4826 // LONG_PRESS_CENTER is set in common onKeyDown 4827 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4828 mTrackballDown = false; 4829 mTrackballUpTime = time; 4830 if (mShiftIsPressed) { 4831 if (mExtendSelection) { 4832 commitCopy(); 4833 } else { 4834 mExtendSelection = true; 4835 invalidate(); // draw the i-beam instead of the arrow 4836 } 4837 return true; // discard press if copy in progress 4838 } 4839 if (DebugFlags.WEB_VIEW) { 4840 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4841 + " time=" + time 4842 ); 4843 } 4844 return false; // let common code in onKeyUp at it 4845 } 4846 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4847 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4848 return false; 4849 } 4850 if (mTrackballDown) { 4851 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4852 return true; // discard move if trackball is down 4853 } 4854 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4855 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4856 return true; 4857 } 4858 // TODO: alternatively we can do panning as touch does 4859 switchOutDrawHistory(); 4860 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4861 if (DebugFlags.WEB_VIEW) { 4862 Log.v(LOGTAG, "onTrackballEvent time=" 4863 + time + " last=" + mTrackballLastTime); 4864 } 4865 mTrackballFirstTime = time; 4866 mTrackballXMove = mTrackballYMove = 0; 4867 } 4868 mTrackballLastTime = time; 4869 if (DebugFlags.WEB_VIEW) { 4870 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4871 } 4872 mTrackballRemainsX += ev.getX(); 4873 mTrackballRemainsY += ev.getY(); 4874 doTrackball(time); 4875 return true; 4876 } 4877 4878 void moveSelection(float xRate, float yRate) { 4879 if (mNativeClass == 0) 4880 return; 4881 int width = getViewWidth(); 4882 int height = getViewHeight(); 4883 mSelectX += xRate; 4884 mSelectY += yRate; 4885 int maxX = width + mScrollX; 4886 int maxY = height + mScrollY; 4887 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 4888 , mSelectX)); 4889 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 4890 , mSelectY)); 4891 if (DebugFlags.WEB_VIEW) { 4892 Log.v(LOGTAG, "moveSelection" 4893 + " mSelectX=" + mSelectX 4894 + " mSelectY=" + mSelectY 4895 + " mScrollX=" + mScrollX 4896 + " mScrollY=" + mScrollY 4897 + " xRate=" + xRate 4898 + " yRate=" + yRate 4899 ); 4900 } 4901 nativeMoveSelection(viewToContentX(mSelectX), 4902 viewToContentY(mSelectY), mExtendSelection); 4903 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 4904 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4905 : 0; 4906 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 4907 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4908 : 0; 4909 pinScrollBy(scrollX, scrollY, true, 0); 4910 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 4911 requestRectangleOnScreen(select); 4912 invalidate(); 4913 } 4914 4915 private int scaleTrackballX(float xRate, int width) { 4916 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4917 int nextXMove = xMove; 4918 if (xMove > 0) { 4919 if (xMove > mTrackballXMove) { 4920 xMove -= mTrackballXMove; 4921 } 4922 } else if (xMove < mTrackballXMove) { 4923 xMove -= mTrackballXMove; 4924 } 4925 mTrackballXMove = nextXMove; 4926 return xMove; 4927 } 4928 4929 private int scaleTrackballY(float yRate, int height) { 4930 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 4931 int nextYMove = yMove; 4932 if (yMove > 0) { 4933 if (yMove > mTrackballYMove) { 4934 yMove -= mTrackballYMove; 4935 } 4936 } else if (yMove < mTrackballYMove) { 4937 yMove -= mTrackballYMove; 4938 } 4939 mTrackballYMove = nextYMove; 4940 return yMove; 4941 } 4942 4943 private int keyCodeToSoundsEffect(int keyCode) { 4944 switch(keyCode) { 4945 case KeyEvent.KEYCODE_DPAD_UP: 4946 return SoundEffectConstants.NAVIGATION_UP; 4947 case KeyEvent.KEYCODE_DPAD_RIGHT: 4948 return SoundEffectConstants.NAVIGATION_RIGHT; 4949 case KeyEvent.KEYCODE_DPAD_DOWN: 4950 return SoundEffectConstants.NAVIGATION_DOWN; 4951 case KeyEvent.KEYCODE_DPAD_LEFT: 4952 return SoundEffectConstants.NAVIGATION_LEFT; 4953 } 4954 throw new IllegalArgumentException("keyCode must be one of " + 4955 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 4956 "KEYCODE_DPAD_LEFT}."); 4957 } 4958 4959 private void doTrackball(long time) { 4960 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 4961 if (elapsed == 0) { 4962 elapsed = TRACKBALL_TIMEOUT; 4963 } 4964 float xRate = mTrackballRemainsX * 1000 / elapsed; 4965 float yRate = mTrackballRemainsY * 1000 / elapsed; 4966 int viewWidth = getViewWidth(); 4967 int viewHeight = getViewHeight(); 4968 if (mShiftIsPressed) { 4969 moveSelection(scaleTrackballX(xRate, viewWidth), 4970 scaleTrackballY(yRate, viewHeight)); 4971 mTrackballRemainsX = mTrackballRemainsY = 0; 4972 return; 4973 } 4974 float ax = Math.abs(xRate); 4975 float ay = Math.abs(yRate); 4976 float maxA = Math.max(ax, ay); 4977 if (DebugFlags.WEB_VIEW) { 4978 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 4979 + " xRate=" + xRate 4980 + " yRate=" + yRate 4981 + " mTrackballRemainsX=" + mTrackballRemainsX 4982 + " mTrackballRemainsY=" + mTrackballRemainsY); 4983 } 4984 int width = mContentWidth - viewWidth; 4985 int height = mContentHeight - viewHeight; 4986 if (width < 0) width = 0; 4987 if (height < 0) height = 0; 4988 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 4989 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 4990 maxA = Math.max(ax, ay); 4991 int count = Math.max(0, (int) maxA); 4992 int oldScrollX = mScrollX; 4993 int oldScrollY = mScrollY; 4994 if (count > 0) { 4995 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 4996 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 4997 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 4998 KeyEvent.KEYCODE_DPAD_RIGHT; 4999 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5000 if (DebugFlags.WEB_VIEW) { 5001 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5002 + " count=" + count 5003 + " mTrackballRemainsX=" + mTrackballRemainsX 5004 + " mTrackballRemainsY=" + mTrackballRemainsY); 5005 } 5006 if (navHandledKey(selectKeyCode, count, false, time, false)) { 5007 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5008 } 5009 mTrackballRemainsX = mTrackballRemainsY = 0; 5010 } 5011 if (count >= TRACKBALL_SCROLL_COUNT) { 5012 int xMove = scaleTrackballX(xRate, width); 5013 int yMove = scaleTrackballY(yRate, height); 5014 if (DebugFlags.WEB_VIEW) { 5015 Log.v(LOGTAG, "doTrackball pinScrollBy" 5016 + " count=" + count 5017 + " xMove=" + xMove + " yMove=" + yMove 5018 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5019 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5020 ); 5021 } 5022 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5023 xMove = 0; 5024 } 5025 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5026 yMove = 0; 5027 } 5028 if (xMove != 0 || yMove != 0) { 5029 pinScrollBy(xMove, yMove, true, 0); 5030 } 5031 mUserScroll = true; 5032 } 5033 } 5034 5035 private int computeMaxScrollY() { 5036 int maxContentH = computeVerticalScrollRange() + getTitleHeight(); 5037 return Math.max(maxContentH - getViewHeightWithTitle(), getTitleHeight()); 5038 } 5039 5040 public void flingScroll(int vx, int vy) { 5041 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5042 int maxY = computeMaxScrollY(); 5043 5044 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 5045 invalidate(); 5046 } 5047 5048 private void doFling() { 5049 if (mVelocityTracker == null) { 5050 return; 5051 } 5052 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5053 int maxY = computeMaxScrollY(); 5054 5055 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5056 int vx = (int) mVelocityTracker.getXVelocity(); 5057 int vy = (int) mVelocityTracker.getYVelocity(); 5058 5059 if (mSnapScrollMode != SNAP_NONE) { 5060 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5061 vy = 0; 5062 } else { 5063 vx = 0; 5064 } 5065 } 5066 5067 if (true /* EMG release: make our fling more like Maps' */) { 5068 // maps cuts their velocity in half 5069 vx = vx * 3 / 4; 5070 vy = vy * 3 / 4; 5071 } 5072 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5073 WebViewCore.resumePriority(); 5074 return; 5075 } 5076 float currentVelocity = mScroller.getCurrVelocity(); 5077 if (mLastVelocity > 0 && currentVelocity > 0) { 5078 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5079 - Math.atan2(vy, vx))); 5080 final float circle = (float) (Math.PI) * 2.0f; 5081 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5082 vx += currentVelocity * mLastVelX / mLastVelocity; 5083 vy += currentVelocity * mLastVelY / mLastVelocity; 5084 if (DebugFlags.WEB_VIEW) { 5085 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5086 } 5087 } else if (DebugFlags.WEB_VIEW) { 5088 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5089 } 5090 } else if (DebugFlags.WEB_VIEW) { 5091 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5092 + " current=" + currentVelocity 5093 + " vx=" + vx + " vy=" + vy 5094 + " maxX=" + maxX + " maxY=" + maxY 5095 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5096 } 5097 mLastVelX = vx; 5098 mLastVelY = vy; 5099 mLastVelocity = (float) Math.hypot(vx, vy); 5100 5101 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 5102 // TODO: duration is calculated based on velocity, if the range is 5103 // small, the animation will stop before duration is up. We may 5104 // want to calculate how long the animation is going to run to precisely 5105 // resume the webcore update. 5106 final int time = mScroller.getDuration(); 5107 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5108 awakenScrollBars(time); 5109 invalidate(); 5110 } 5111 5112 private boolean zoomWithPreview(float scale) { 5113 float oldScale = mActualScale; 5114 mInitialScrollX = mScrollX; 5115 mInitialScrollY = mScrollY; 5116 5117 // snap to DEFAULT_SCALE if it is close 5118 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 5119 scale = mDefaultScale; 5120 } 5121 5122 setNewZoomScale(scale, true, false); 5123 5124 if (oldScale != mActualScale) { 5125 // use mZoomPickerScale to see zoom preview first 5126 mZoomStart = SystemClock.uptimeMillis(); 5127 mInvInitialZoomScale = 1.0f / oldScale; 5128 mInvFinalZoomScale = 1.0f / mActualScale; 5129 mZoomScale = mActualScale; 5130 WebViewCore.pauseUpdatePicture(mWebViewCore); 5131 invalidate(); 5132 return true; 5133 } else { 5134 return false; 5135 } 5136 } 5137 5138 /** 5139 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5140 * in charge of installing this view to the view hierarchy. This view will 5141 * become visible when the user starts scrolling via touch and fade away if 5142 * the user does not interact with it. 5143 * <p/> 5144 * API version 3 introduces a built-in zoom mechanism that is shown 5145 * automatically by the MapView. This is the preferred approach for 5146 * showing the zoom UI. 5147 * 5148 * @deprecated The built-in zoom mechanism is preferred, see 5149 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5150 */ 5151 @Deprecated 5152 public View getZoomControls() { 5153 if (!getSettings().supportZoom()) { 5154 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5155 return null; 5156 } 5157 if (mZoomControls == null) { 5158 mZoomControls = createZoomControls(); 5159 5160 /* 5161 * need to be set to VISIBLE first so that getMeasuredHeight() in 5162 * {@link #onSizeChanged()} can return the measured value for proper 5163 * layout. 5164 */ 5165 mZoomControls.setVisibility(View.VISIBLE); 5166 mZoomControlRunnable = new Runnable() { 5167 public void run() { 5168 5169 /* Don't dismiss the controls if the user has 5170 * focus on them. Wait and check again later. 5171 */ 5172 if (!mZoomControls.hasFocus()) { 5173 mZoomControls.hide(); 5174 } else { 5175 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5176 mPrivateHandler.postDelayed(mZoomControlRunnable, 5177 ZOOM_CONTROLS_TIMEOUT); 5178 } 5179 } 5180 }; 5181 } 5182 return mZoomControls; 5183 } 5184 5185 private ExtendedZoomControls createZoomControls() { 5186 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 5187 , null); 5188 zoomControls.setOnZoomInClickListener(new OnClickListener() { 5189 public void onClick(View v) { 5190 // reset time out 5191 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5192 mPrivateHandler.postDelayed(mZoomControlRunnable, 5193 ZOOM_CONTROLS_TIMEOUT); 5194 zoomIn(); 5195 } 5196 }); 5197 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 5198 public void onClick(View v) { 5199 // reset time out 5200 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5201 mPrivateHandler.postDelayed(mZoomControlRunnable, 5202 ZOOM_CONTROLS_TIMEOUT); 5203 zoomOut(); 5204 } 5205 }); 5206 return zoomControls; 5207 } 5208 5209 /** 5210 * Gets the {@link ZoomButtonsController} which can be used to add 5211 * additional buttons to the zoom controls window. 5212 * 5213 * @return The instance of {@link ZoomButtonsController} used by this class, 5214 * or null if it is unavailable. 5215 * @hide 5216 */ 5217 public ZoomButtonsController getZoomButtonsController() { 5218 return mZoomButtonsController; 5219 } 5220 5221 /** 5222 * Perform zoom in in the webview 5223 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 5224 */ 5225 public boolean zoomIn() { 5226 // TODO: alternatively we can disallow this during draw history mode 5227 switchOutDrawHistory(); 5228 mInZoomOverview = false; 5229 // Center zooming to the center of the screen. 5230 mZoomCenterX = getViewWidth() * .5f; 5231 mZoomCenterY = getViewHeight() * .5f; 5232 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5233 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5234 return zoomWithPreview(mActualScale * 1.25f); 5235 } 5236 5237 /** 5238 * Perform zoom out in the webview 5239 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 5240 */ 5241 public boolean zoomOut() { 5242 // TODO: alternatively we can disallow this during draw history mode 5243 switchOutDrawHistory(); 5244 // Center zooming to the center of the screen. 5245 mZoomCenterX = getViewWidth() * .5f; 5246 mZoomCenterY = getViewHeight() * .5f; 5247 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5248 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5249 return zoomWithPreview(mActualScale * 0.8f); 5250 } 5251 5252 private void updateSelection() { 5253 if (mNativeClass == 0) { 5254 return; 5255 } 5256 // mLastTouchX and mLastTouchY are the point in the current viewport 5257 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5258 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5259 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 5260 contentX + mNavSlop, contentY + mNavSlop); 5261 nativeSelectBestAt(rect); 5262 } 5263 5264 /** 5265 * Scroll the focused text field/area to match the WebTextView 5266 * @param xPercent New x position of the WebTextView from 0 to 1. 5267 * @param y New y position of the WebTextView in view coordinates 5268 */ 5269 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 5270 if (!inEditingMode() || mWebViewCore == null) { 5271 return; 5272 } 5273 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 5274 // Since this position is relative to the top of the text input 5275 // field, we do not need to take the title bar's height into 5276 // consideration. 5277 viewToContentDimension(y), 5278 new Float(xPercent)); 5279 } 5280 5281 /** 5282 * Set our starting point and time for a drag from the WebTextView. 5283 */ 5284 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 5285 if (!inEditingMode()) { 5286 return; 5287 } 5288 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 5289 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 5290 mLastTouchTime = eventTime; 5291 if (!mScroller.isFinished()) { 5292 abortAnimation(); 5293 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5294 } 5295 mSnapScrollMode = SNAP_NONE; 5296 mVelocityTracker = VelocityTracker.obtain(); 5297 mTouchMode = TOUCH_DRAG_START_MODE; 5298 } 5299 5300 /** 5301 * Given a motion event from the WebTextView, set its location to our 5302 * coordinates, and handle the event. 5303 */ 5304 /*package*/ boolean textFieldDrag(MotionEvent event) { 5305 if (!inEditingMode()) { 5306 return false; 5307 } 5308 mDragFromTextInput = true; 5309 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 5310 (float) (mWebTextView.getTop() - mScrollY)); 5311 boolean result = onTouchEvent(event); 5312 mDragFromTextInput = false; 5313 return result; 5314 } 5315 5316 /** 5317 * Due a touch up from a WebTextView. This will be handled by webkit to 5318 * change the selection. 5319 * @param event MotionEvent in the WebTextView's coordinates. 5320 */ 5321 /*package*/ void touchUpOnTextField(MotionEvent event) { 5322 if (!inEditingMode()) { 5323 return; 5324 } 5325 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 5326 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 5327 nativeMotionUp(x, y, mNavSlop); 5328 } 5329 5330 /** 5331 * Called when pressing the center key or trackball on a textfield. 5332 */ 5333 /*package*/ void centerKeyPressOnTextField() { 5334 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 5335 nativeCursorNodePointer()); 5336 } 5337 5338 private void doShortPress() { 5339 if (mNativeClass == 0) { 5340 return; 5341 } 5342 switchOutDrawHistory(); 5343 // mLastTouchX and mLastTouchY are the point in the current viewport 5344 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5345 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5346 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 5347 WebViewCore.MotionUpData motionUpData = new WebViewCore 5348 .MotionUpData(); 5349 motionUpData.mFrame = nativeCacheHitFramePointer(); 5350 motionUpData.mNode = nativeCacheHitNodePointer(); 5351 motionUpData.mBounds = nativeCacheHitNodeBounds(); 5352 motionUpData.mX = contentX; 5353 motionUpData.mY = contentY; 5354 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 5355 motionUpData); 5356 } else { 5357 doMotionUp(contentX, contentY); 5358 } 5359 } 5360 5361 private void doMotionUp(int contentX, int contentY) { 5362 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 5363 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 5364 } 5365 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 5366 playSoundEffect(SoundEffectConstants.CLICK); 5367 } 5368 } 5369 5370 // Rule for double tap: 5371 // 1. if the current scale is not same as the text wrap scale and layout 5372 // algorithm is NARROW_COLUMNS, fit to column; 5373 // 2. if the current state is not overview mode, change to overview mode; 5374 // 3. if the current state is overview mode, change to default scale. 5375 private void doDoubleTap() { 5376 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 5377 return; 5378 } 5379 mZoomCenterX = mLastTouchX; 5380 mZoomCenterY = mLastTouchY; 5381 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5382 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5383 WebSettings settings = getSettings(); 5384 // remove the zoom control after double tap 5385 if (settings.getBuiltInZoomControls()) { 5386 if (mZoomButtonsController.isVisible()) { 5387 mZoomButtonsController.setVisible(false); 5388 } 5389 } else { 5390 if (mZoomControlRunnable != null) { 5391 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5392 } 5393 if (mZoomControls != null) { 5394 mZoomControls.hide(); 5395 } 5396 } 5397 settings.setDoubleTapToastCount(0); 5398 boolean zoomToDefault = false; 5399 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 5400 && (Math.abs(mActualScale - mTextWrapScale) >= 0.01f)) { 5401 setNewZoomScale(mActualScale, true, true); 5402 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 5403 if (Math.abs(mActualScale - overviewScale) < 0.01f) { 5404 mInZoomOverview = true; 5405 } 5406 } else if (!mInZoomOverview) { 5407 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 5408 if (Math.abs(mActualScale - newScale) >= 0.01f) { 5409 mInZoomOverview = true; 5410 // Force the titlebar fully reveal in overview mode 5411 if (mScrollY < getTitleHeight()) mScrollY = 0; 5412 zoomWithPreview(newScale); 5413 } else if (Math.abs(mActualScale - mDefaultScale) >= 0.01f) { 5414 zoomToDefault = true; 5415 } 5416 } else { 5417 zoomToDefault = true; 5418 } 5419 if (zoomToDefault) { 5420 mInZoomOverview = false; 5421 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 5422 if (left != NO_LEFTEDGE) { 5423 // add a 5pt padding to the left edge. 5424 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 5425 - mScrollX; 5426 // Re-calculate the zoom center so that the new scroll x will be 5427 // on the left edge. 5428 if (viewLeft > 0) { 5429 mZoomCenterX = viewLeft * mDefaultScale 5430 / (mDefaultScale - mActualScale); 5431 } else { 5432 scrollBy(viewLeft, 0); 5433 mZoomCenterX = 0; 5434 } 5435 } 5436 zoomWithPreview(mDefaultScale); 5437 } 5438 } 5439 5440 // Called by JNI to handle a touch on a node representing an email address, 5441 // address, or phone number 5442 private void overrideLoading(String url) { 5443 mCallbackProxy.uiOverrideUrlLoading(url); 5444 } 5445 5446 @Override 5447 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 5448 boolean result = false; 5449 if (inEditingMode()) { 5450 result = mWebTextView.requestFocus(direction, 5451 previouslyFocusedRect); 5452 } else { 5453 result = super.requestFocus(direction, previouslyFocusedRect); 5454 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 5455 // For cases such as GMail, where we gain focus from a direction, 5456 // we want to move to the first available link. 5457 // FIXME: If there are no visible links, we may not want to 5458 int fakeKeyDirection = 0; 5459 switch(direction) { 5460 case View.FOCUS_UP: 5461 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 5462 break; 5463 case View.FOCUS_DOWN: 5464 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 5465 break; 5466 case View.FOCUS_LEFT: 5467 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 5468 break; 5469 case View.FOCUS_RIGHT: 5470 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 5471 break; 5472 default: 5473 return result; 5474 } 5475 if (mNativeClass != 0 && !nativeHasCursorNode()) { 5476 navHandledKey(fakeKeyDirection, 1, true, 0, true); 5477 } 5478 } 5479 } 5480 return result; 5481 } 5482 5483 @Override 5484 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5485 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 5486 5487 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5488 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5489 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5490 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5491 5492 int measuredHeight = heightSize; 5493 int measuredWidth = widthSize; 5494 5495 // Grab the content size from WebViewCore. 5496 int contentHeight = contentToViewDimension(mContentHeight); 5497 int contentWidth = contentToViewDimension(mContentWidth); 5498 5499// Log.d(LOGTAG, "------- measure " + heightMode); 5500 5501 if (heightMode != MeasureSpec.EXACTLY) { 5502 mHeightCanMeasure = true; 5503 measuredHeight = contentHeight; 5504 if (heightMode == MeasureSpec.AT_MOST) { 5505 // If we are larger than the AT_MOST height, then our height can 5506 // no longer be measured and we should scroll internally. 5507 if (measuredHeight > heightSize) { 5508 measuredHeight = heightSize; 5509 mHeightCanMeasure = false; 5510 } 5511 } 5512 } else { 5513 mHeightCanMeasure = false; 5514 } 5515 if (mNativeClass != 0) { 5516 nativeSetHeightCanMeasure(mHeightCanMeasure); 5517 } 5518 // For the width, always use the given size unless unspecified. 5519 if (widthMode == MeasureSpec.UNSPECIFIED) { 5520 mWidthCanMeasure = true; 5521 measuredWidth = contentWidth; 5522 } else { 5523 mWidthCanMeasure = false; 5524 } 5525 5526 synchronized (this) { 5527 setMeasuredDimension(measuredWidth, measuredHeight); 5528 } 5529 } 5530 5531 @Override 5532 public boolean requestChildRectangleOnScreen(View child, 5533 Rect rect, 5534 boolean immediate) { 5535 rect.offset(child.getLeft() - child.getScrollX(), 5536 child.getTop() - child.getScrollY()); 5537 5538 int height = getViewHeightWithTitle(); 5539 int screenTop = mScrollY; 5540 int screenBottom = screenTop + height; 5541 5542 int scrollYDelta = 0; 5543 5544 if (rect.bottom > screenBottom) { 5545 int oneThirdOfScreenHeight = height / 3; 5546 if (rect.height() > 2 * oneThirdOfScreenHeight) { 5547 // If the rectangle is too tall to fit in the bottom two thirds 5548 // of the screen, place it at the top. 5549 scrollYDelta = rect.top - screenTop; 5550 } else { 5551 // If the rectangle will still fit on screen, we want its 5552 // top to be in the top third of the screen. 5553 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 5554 } 5555 } else if (rect.top < screenTop) { 5556 scrollYDelta = rect.top - screenTop; 5557 } 5558 5559 int width = getWidth() - getVerticalScrollbarWidth(); 5560 int screenLeft = mScrollX; 5561 int screenRight = screenLeft + width; 5562 5563 int scrollXDelta = 0; 5564 5565 if (rect.right > screenRight && rect.left > screenLeft) { 5566 if (rect.width() > width) { 5567 scrollXDelta += (rect.left - screenLeft); 5568 } else { 5569 scrollXDelta += (rect.right - screenRight); 5570 } 5571 } else if (rect.left < screenLeft) { 5572 scrollXDelta -= (screenLeft - rect.left); 5573 } 5574 5575 if ((scrollYDelta | scrollXDelta) != 0) { 5576 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 5577 } 5578 5579 return false; 5580 } 5581 5582 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 5583 String replace, int newStart, int newEnd) { 5584 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 5585 arg.mReplace = replace; 5586 arg.mNewStart = newStart; 5587 arg.mNewEnd = newEnd; 5588 mTextGeneration++; 5589 arg.mTextGeneration = mTextGeneration; 5590 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 5591 } 5592 5593 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 5594 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 5595 arg.mEvent = event; 5596 arg.mCurrentText = currentText; 5597 // Increase our text generation number, and pass it to webcore thread 5598 mTextGeneration++; 5599 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 5600 // WebKit's document state is not saved until about to leave the page. 5601 // To make sure the host application, like Browser, has the up to date 5602 // document state when it goes to background, we force to save the 5603 // document state. 5604 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 5605 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 5606 cursorData(), 1000); 5607 } 5608 5609 /* package */ WebViewCore getWebViewCore() { 5610 return mWebViewCore; 5611 } 5612 5613 //------------------------------------------------------------------------- 5614 // Methods can be called from a separate thread, like WebViewCore 5615 // If it needs to call the View system, it has to send message. 5616 //------------------------------------------------------------------------- 5617 5618 /** 5619 * General handler to receive message coming from webkit thread 5620 */ 5621 class PrivateHandler extends Handler { 5622 @Override 5623 public void handleMessage(Message msg) { 5624 // exclude INVAL_RECT_MSG_ID since it is frequently output 5625 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 5626 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 5627 > FIND_AGAIN ? Integer.toString(msg.what) 5628 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 5629 } 5630 if (mWebViewCore == null) { 5631 // after WebView's destroy() is called, skip handling messages. 5632 return; 5633 } 5634 switch (msg.what) { 5635 case REMEMBER_PASSWORD: { 5636 mDatabase.setUsernamePassword( 5637 msg.getData().getString("host"), 5638 msg.getData().getString("username"), 5639 msg.getData().getString("password")); 5640 ((Message) msg.obj).sendToTarget(); 5641 break; 5642 } 5643 case NEVER_REMEMBER_PASSWORD: { 5644 mDatabase.setUsernamePassword( 5645 msg.getData().getString("host"), null, null); 5646 ((Message) msg.obj).sendToTarget(); 5647 break; 5648 } 5649 case SWITCH_TO_SHORTPRESS: { 5650 // if mPreventDrag is not confirmed, treat it as no so that 5651 // it won't block panning the page. 5652 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5653 mPreventDrag = PREVENT_DRAG_NO; 5654 mPreventLongPress = false; 5655 mPreventDoubleTap = false; 5656 } 5657 if (mTouchMode == TOUCH_INIT_MODE) { 5658 mTouchMode = mFullScreenHolder == null 5659 ? TOUCH_SHORTPRESS_START_MODE 5660 : TOUCH_SHORTPRESS_MODE; 5661 updateSelection(); 5662 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5663 mTouchMode = TOUCH_DONE_MODE; 5664 } 5665 break; 5666 } 5667 case SWITCH_TO_LONGPRESS: { 5668 if (mPreventLongPress) { 5669 mTouchMode = TOUCH_DONE_MODE; 5670 WebViewCore.TouchEventData ted 5671 = new WebViewCore.TouchEventData(); 5672 ted.mAction = WebViewCore.ACTION_LONGPRESS; 5673 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 5674 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 5675 ted.mEventTime = SystemClock.uptimeMillis(); 5676 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5677 } else if (mPreventDrag == PREVENT_DRAG_NO) { 5678 mTouchMode = TOUCH_DONE_MODE; 5679 if (mFullScreenHolder == null) { 5680 performLongClick(); 5681 rebuildWebTextView(); 5682 } 5683 } 5684 break; 5685 } 5686 case RELEASE_SINGLE_TAP: { 5687 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5688 // if mPreventDrag is not confirmed, treat it as 5689 // no so that it won't block tap. 5690 mPreventDrag = PREVENT_DRAG_NO; 5691 mPreventLongPress = false; 5692 mPreventDoubleTap = false; 5693 } 5694 if (mPreventDrag == PREVENT_DRAG_NO) { 5695 mTouchMode = TOUCH_DONE_MODE; 5696 doShortPress(); 5697 } 5698 break; 5699 } 5700 case SCROLL_BY_MSG_ID: 5701 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 5702 break; 5703 case SYNC_SCROLL_TO_MSG_ID: 5704 if (mUserScroll) { 5705 // if user has scrolled explicitly, don't sync the 5706 // scroll position any more 5707 mUserScroll = false; 5708 break; 5709 } 5710 // fall through 5711 case SCROLL_TO_MSG_ID: 5712 if (setContentScrollTo(msg.arg1, msg.arg2)) { 5713 // if we can't scroll to the exact position due to pin, 5714 // send a message to WebCore to re-scroll when we get a 5715 // new picture 5716 mUserScroll = false; 5717 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 5718 msg.arg1, msg.arg2); 5719 } 5720 break; 5721 case SPAWN_SCROLL_TO_MSG_ID: 5722 spawnContentScrollTo(msg.arg1, msg.arg2); 5723 break; 5724 case UPDATE_ZOOM_RANGE: { 5725 WebViewCore.RestoreState restoreState 5726 = (WebViewCore.RestoreState) msg.obj; 5727 // mScrollX contains the new minPrefWidth 5728 updateZoomRange(restoreState, getViewWidth(), 5729 restoreState.mScrollX, false); 5730 break; 5731 } 5732 case NEW_PICTURE_MSG_ID: { 5733 WebSettings settings = mWebViewCore.getSettings(); 5734 // called for new content 5735 final int viewWidth = getViewWidth(); 5736 final WebViewCore.DrawData draw = 5737 (WebViewCore.DrawData) msg.obj; 5738 final Point viewSize = draw.mViewPoint; 5739 boolean useWideViewport = settings.getUseWideViewPort(); 5740 WebViewCore.RestoreState restoreState = draw.mRestoreState; 5741 boolean hasRestoreState = restoreState != null; 5742 if (hasRestoreState) { 5743 mInZoomOverview = false; 5744 updateZoomRange(restoreState, viewSize.x, 5745 draw.mMinPrefWidth, true); 5746 if (mInitialScaleInPercent > 0) { 5747 setNewZoomScale(mInitialScaleInPercent / 100.0f, 5748 mInitialScaleInPercent != mTextWrapScale * 100, 5749 false); 5750 } else if (restoreState.mViewScale > 0) { 5751 mTextWrapScale = restoreState.mTextWrapScale; 5752 setNewZoomScale(restoreState.mViewScale, false, 5753 false); 5754 } else { 5755 mInZoomOverview = useWideViewport 5756 && settings.getLoadWithOverviewMode(); 5757 float scale; 5758 if (mInZoomOverview) { 5759 scale = (float) viewWidth 5760 / DEFAULT_VIEWPORT_WIDTH; 5761 } else { 5762 scale = restoreState.mTextWrapScale; 5763 } 5764 setNewZoomScale(scale, Math.abs(scale 5765 - mTextWrapScale) >= 0.01f, false); 5766 } 5767 setContentScrollTo(restoreState.mScrollX, 5768 restoreState.mScrollY); 5769 // As we are on a new page, remove the WebTextView. This 5770 // is necessary for page loads driven by webkit, and in 5771 // particular when the user was on a password field, so 5772 // the WebTextView was visible. 5773 clearTextEntry(); 5774 // update the zoom buttons as the scale can be changed 5775 if (getSettings().getBuiltInZoomControls()) { 5776 updateZoomButtonsEnabled(); 5777 } 5778 } 5779 // We update the layout (i.e. request a layout from the 5780 // view system) if the last view size that we sent to 5781 // WebCore matches the view size of the picture we just 5782 // received in the fixed dimension. 5783 final boolean updateLayout = viewSize.x == mLastWidthSent 5784 && viewSize.y == mLastHeightSent; 5785 recordNewContentSize(draw.mWidthHeight.x, 5786 draw.mWidthHeight.y 5787 + (mFindIsUp ? mFindHeight : 0), updateLayout); 5788 if (DebugFlags.WEB_VIEW) { 5789 Rect b = draw.mInvalRegion.getBounds(); 5790 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 5791 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 5792 } 5793 invalidateContentRect(draw.mInvalRegion.getBounds()); 5794 if (mPictureListener != null) { 5795 mPictureListener.onNewPicture(WebView.this, capturePicture()); 5796 } 5797 if (useWideViewport) { 5798 // limit mZoomOverviewWidth upper bound to 5799 // sMaxViewportWidth so that if the page doesn't behave 5800 // well, the WebView won't go insane. limit the lower 5801 // bound to match the default scale for mobile sites. 5802 mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math 5803 .max((int) (viewWidth / mDefaultScale), Math 5804 .max(draw.mMinPrefWidth, 5805 draw.mViewPoint.x))); 5806 } 5807 if (!mMinZoomScaleFixed) { 5808 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 5809 } 5810 if (!mDrawHistory && mInZoomOverview) { 5811 // fit the content width to the current view. Ignore 5812 // the rounding error case. 5813 if (Math.abs((viewWidth * mInvActualScale) 5814 - mZoomOverviewWidth) > 1) { 5815 setNewZoomScale((float) viewWidth 5816 / mZoomOverviewWidth, Math.abs(mActualScale 5817 - mTextWrapScale) < 0.01f, false); 5818 } 5819 } 5820 if (draw.mFocusSizeChanged && inEditingMode()) { 5821 mFocusSizeChanged = true; 5822 } 5823 if (hasRestoreState) { 5824 mViewManager.postReadyToDrawAll(); 5825 } 5826 break; 5827 } 5828 case WEBCORE_INITIALIZED_MSG_ID: 5829 // nativeCreate sets mNativeClass to a non-zero value 5830 nativeCreate(msg.arg1); 5831 break; 5832 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 5833 // Make sure that the textfield is currently focused 5834 // and representing the same node as the pointer. 5835 if (inEditingMode() && 5836 mWebTextView.isSameTextField(msg.arg1)) { 5837 if (msg.getData().getBoolean("password")) { 5838 Spannable text = (Spannable) mWebTextView.getText(); 5839 int start = Selection.getSelectionStart(text); 5840 int end = Selection.getSelectionEnd(text); 5841 mWebTextView.setInPassword(true); 5842 // Restore the selection, which may have been 5843 // ruined by setInPassword. 5844 Spannable pword = 5845 (Spannable) mWebTextView.getText(); 5846 Selection.setSelection(pword, start, end); 5847 // If the text entry has created more events, ignore 5848 // this one. 5849 } else if (msg.arg2 == mTextGeneration) { 5850 mWebTextView.setTextAndKeepSelection( 5851 (String) msg.obj); 5852 } 5853 } 5854 break; 5855 case UPDATE_TEXT_SELECTION_MSG_ID: 5856 if (inEditingMode() 5857 && mWebTextView.isSameTextField(msg.arg1) 5858 && msg.arg2 == mTextGeneration) { 5859 WebViewCore.TextSelectionData tData 5860 = (WebViewCore.TextSelectionData) msg.obj; 5861 mWebTextView.setSelectionFromWebKit(tData.mStart, 5862 tData.mEnd); 5863 } 5864 break; 5865 case RETURN_LABEL: 5866 if (inEditingMode() 5867 && mWebTextView.isSameTextField(msg.arg1)) { 5868 mWebTextView.setHint((String) msg.obj); 5869 InputMethodManager imm 5870 = InputMethodManager.peekInstance(); 5871 // The hint is propagated to the IME in 5872 // onCreateInputConnection. If the IME is already 5873 // active, restart it so that its hint text is updated. 5874 if (imm != null && imm.isActive(mWebTextView)) { 5875 imm.restartInput(mWebTextView); 5876 } 5877 } 5878 break; 5879 case MOVE_OUT_OF_PLUGIN: 5880 navHandledKey(msg.arg1, 1, false, 0, true); 5881 break; 5882 case UPDATE_TEXT_ENTRY_MSG_ID: 5883 // this is sent after finishing resize in WebViewCore. Make 5884 // sure the text edit box is still on the screen. 5885 if (inEditingMode() && nativeCursorIsTextInput()) { 5886 mWebTextView.bringIntoView(); 5887 rebuildWebTextView(); 5888 } 5889 break; 5890 case CLEAR_TEXT_ENTRY: 5891 clearTextEntry(); 5892 break; 5893 case INVAL_RECT_MSG_ID: { 5894 Rect r = (Rect)msg.obj; 5895 if (r == null) { 5896 invalidate(); 5897 } else { 5898 // we need to scale r from content into view coords, 5899 // which viewInvalidate() does for us 5900 viewInvalidate(r.left, r.top, r.right, r.bottom); 5901 } 5902 break; 5903 } 5904 case IMMEDIATE_REPAINT_MSG_ID: { 5905 invalidate(); 5906 break; 5907 } 5908 case SET_ROOT_LAYER_MSG_ID: { 5909 int oldLayer = mRootLayer; 5910 mRootLayer = msg.arg1; 5911 if (oldLayer > 0) { 5912 nativeDestroyLayer(oldLayer); 5913 } 5914 invalidate(); 5915 break; 5916 } 5917 case REQUEST_FORM_DATA: 5918 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 5919 if (mWebTextView.isSameTextField(msg.arg1)) { 5920 mWebTextView.setAdapterCustom(adapter); 5921 } 5922 break; 5923 case RESUME_WEBCORE_PRIORITY: 5924 WebViewCore.resumePriority(); 5925 break; 5926 5927 case LONG_PRESS_CENTER: 5928 // as this is shared by keydown and trackballdown, reset all 5929 // the states 5930 mGotCenterDown = false; 5931 mTrackballDown = false; 5932 performLongClick(); 5933 break; 5934 5935 case WEBCORE_NEED_TOUCH_EVENTS: 5936 mForwardTouchEvents = (msg.arg1 != 0); 5937 break; 5938 5939 case PREVENT_TOUCH_ID: 5940 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 5941 // dont override if mPreventDrag has been set to no due 5942 // to time out 5943 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5944 mPreventDrag = (msg.arg2 & TOUCH_PREVENT_DRAG) 5945 == TOUCH_PREVENT_DRAG ? PREVENT_DRAG_YES 5946 : PREVENT_DRAG_NO; 5947 if (mPreventDrag == PREVENT_DRAG_YES) { 5948 mTouchMode = TOUCH_DONE_MODE; 5949 } else { 5950 mPreventLongPress = 5951 (msg.arg2 & TOUCH_PREVENT_LONGPRESS) 5952 == TOUCH_PREVENT_LONGPRESS; 5953 mPreventDoubleTap = 5954 (msg.arg2 & TOUCH_PREVENT_DOUBLETAP) 5955 == TOUCH_PREVENT_DOUBLETAP; 5956 } 5957 } 5958 } 5959 break; 5960 5961 case REQUEST_KEYBOARD: 5962 if (msg.arg1 == 0) { 5963 hideSoftKeyboard(); 5964 } else { 5965 displaySoftKeyboard(1 == msg.arg2); 5966 } 5967 break; 5968 5969 case FIND_AGAIN: 5970 // Ignore if find has been dismissed. 5971 if (mFindIsUp) { 5972 findAll(mLastFind); 5973 } 5974 break; 5975 5976 case DRAG_HELD_MOTIONLESS: 5977 mHeldMotionless = MOTIONLESS_TRUE; 5978 invalidate(); 5979 // fall through to keep scrollbars awake 5980 5981 case AWAKEN_SCROLL_BARS: 5982 if (mTouchMode == TOUCH_DRAG_MODE 5983 && mHeldMotionless == MOTIONLESS_TRUE) { 5984 awakenScrollBars(ViewConfiguration 5985 .getScrollDefaultDelay(), false); 5986 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5987 .obtainMessage(AWAKEN_SCROLL_BARS), 5988 ViewConfiguration.getScrollDefaultDelay()); 5989 } 5990 break; 5991 5992 case DO_MOTION_UP: 5993 doMotionUp(msg.arg1, msg.arg2); 5994 break; 5995 5996 case SHOW_FULLSCREEN: { 5997 WebViewCore.PluginFullScreenData data 5998 = (WebViewCore.PluginFullScreenData) msg.obj; 5999 if (data.mNpp != 0 && data.mView != null) { 6000 if (mFullScreenHolder != null) { 6001 Log.w(LOGTAG, 6002 "Should not have another full screen."); 6003 mFullScreenHolder.dismiss(); 6004 } 6005 mFullScreenHolder = new PluginFullScreenHolder( 6006 WebView.this, data.mNpp); 6007 // as we are sharing the View between full screen and 6008 // embedded mode, we have to remove the 6009 // AbsoluteLayout.LayoutParams set by embedded mode to 6010 // ViewGroup.LayoutParams before adding it to the dialog 6011 data.mView.setLayoutParams(new ViewGroup.LayoutParams( 6012 ViewGroup.LayoutParams.FILL_PARENT, 6013 ViewGroup.LayoutParams.FILL_PARENT)); 6014 mFullScreenHolder.setContentView(data.mView); 6015 mFullScreenHolder.setCancelable(false); 6016 mFullScreenHolder.setCanceledOnTouchOutside(false); 6017 mFullScreenHolder.show(); 6018 } else if (mFullScreenHolder == null) { 6019 // this may happen if user dismisses the fullscreen and 6020 // then the WebCore re-position message finally reached 6021 // the UI thread. 6022 break; 6023 } 6024 // move the matching embedded view fully into the view so 6025 // that touch will be valid instead of rejected due to out 6026 // of the visible bounds 6027 // TODO: do we need to preserve the original position and 6028 // scale so that we can revert it when leaving the full 6029 // screen mode? 6030 int x = contentToViewX(data.mDocX); 6031 int y = contentToViewY(data.mDocY); 6032 int width = contentToViewDimension(data.mDocWidth); 6033 int height = contentToViewDimension(data.mDocHeight); 6034 int viewWidth = getViewWidth(); 6035 int viewHeight = getViewHeight(); 6036 int newX = mScrollX; 6037 int newY = mScrollY; 6038 if (x < mScrollX) { 6039 newX = x + (width > viewWidth 6040 ? (width - viewWidth) / 2 : 0); 6041 } else if (x + width > mScrollX + viewWidth) { 6042 newX = x + width - viewWidth - (width > viewWidth 6043 ? (width - viewWidth) / 2 : 0); 6044 } 6045 if (y < mScrollY) { 6046 newY = y + (height > viewHeight 6047 ? (height - viewHeight) / 2 : 0); 6048 } else if (y + height > mScrollY + viewHeight) { 6049 newY = y + height - viewHeight - (height > viewHeight 6050 ? (height - viewHeight) / 2 : 0); 6051 } 6052 scrollTo(newX, newY); 6053 if (width > viewWidth || height > viewHeight) { 6054 mZoomCenterX = viewWidth * .5f; 6055 mZoomCenterY = viewHeight * .5f; 6056 // do not change text wrap scale so that there is no 6057 // reflow 6058 setNewZoomScale(mActualScale 6059 / Math.max((float) width / viewWidth, 6060 (float) height / viewHeight), false, 6061 false); 6062 } 6063 // Now update the bound 6064 mFullScreenHolder.updateBound(contentToViewX(data.mDocX) 6065 - mScrollX, contentToViewY(data.mDocY) - mScrollY, 6066 contentToViewDimension(data.mDocWidth), 6067 contentToViewDimension(data.mDocHeight)); 6068 } 6069 break; 6070 6071 case HIDE_FULLSCREEN: 6072 if (mFullScreenHolder != null) { 6073 mFullScreenHolder.dismiss(); 6074 mFullScreenHolder = null; 6075 } 6076 break; 6077 6078 case DOM_FOCUS_CHANGED: 6079 if (inEditingMode()) { 6080 nativeClearCursor(); 6081 rebuildWebTextView(); 6082 } 6083 break; 6084 6085 case SHOW_RECT_MSG_ID: { 6086 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6087 int x = mScrollX; 6088 int left = contentToViewX(data.mLeft); 6089 int width = contentToViewDimension(data.mWidth); 6090 int maxWidth = contentToViewDimension(data.mContentWidth); 6091 int viewWidth = getViewWidth(); 6092 if (width < viewWidth) { 6093 // center align 6094 x += left + width / 2 - mScrollX - viewWidth / 2; 6095 } else { 6096 x += (int) (left + data.mXPercentInDoc * width 6097 - mScrollX - data.mXPercentInView * viewWidth); 6098 } 6099 if (DebugFlags.WEB_VIEW) { 6100 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6101 width + ",maxWidth=" + maxWidth + 6102 ",viewWidth=" + viewWidth + ",x=" 6103 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6104 ",xPercentInView=" + data.mXPercentInView+ ")"); 6105 } 6106 // use the passing content width to cap x as the current 6107 // mContentWidth may not be updated yet 6108 x = Math.max(0, 6109 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6110 int top = contentToViewY(data.mTop); 6111 int height = contentToViewDimension(data.mHeight); 6112 int maxHeight = contentToViewDimension(data.mContentHeight); 6113 int viewHeight = getViewHeight(); 6114 int y = (int) (top + data.mYPercentInDoc * height - 6115 data.mYPercentInView * viewHeight); 6116 if (DebugFlags.WEB_VIEW) { 6117 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6118 height + ",maxHeight=" + maxHeight + 6119 ",viewHeight=" + viewHeight + ",y=" 6120 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6121 ",yPercentInView=" + data.mYPercentInView+ ")"); 6122 } 6123 // use the passing content height to cap y as the current 6124 // mContentHeight may not be updated yet 6125 y = Math.max(0, 6126 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6127 // We need to take into account the visible title height 6128 // when scrolling since y is an absolute view position. 6129 y = Math.max(0, y - getVisibleTitleHeight()); 6130 scrollTo(x, y); 6131 } 6132 break; 6133 6134 default: 6135 super.handleMessage(msg); 6136 break; 6137 } 6138 } 6139 } 6140 6141 // Class used to use a dropdown for a <select> element 6142 private class InvokeListBox implements Runnable { 6143 // Whether the listbox allows multiple selection. 6144 private boolean mMultiple; 6145 // Passed in to a list with multiple selection to tell 6146 // which items are selected. 6147 private int[] mSelectedArray; 6148 // Passed in to a list with single selection to tell 6149 // where the initial selection is. 6150 private int mSelection; 6151 6152 private Container[] mContainers; 6153 6154 // Need these to provide stable ids to my ArrayAdapter, 6155 // which normally does not have stable ids. (Bug 1250098) 6156 private class Container extends Object { 6157 /** 6158 * Possible values for mEnabled. Keep in sync with OptionStatus in 6159 * WebViewCore.cpp 6160 */ 6161 final static int OPTGROUP = -1; 6162 final static int OPTION_DISABLED = 0; 6163 final static int OPTION_ENABLED = 1; 6164 6165 String mString; 6166 int mEnabled; 6167 int mId; 6168 6169 public String toString() { 6170 return mString; 6171 } 6172 } 6173 6174 /** 6175 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6176 * and allow filtering. 6177 */ 6178 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6179 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6180 super(context, 6181 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6182 com.android.internal.R.layout.select_dialog_singlechoice, 6183 objects); 6184 } 6185 6186 @Override 6187 public View getView(int position, View convertView, 6188 ViewGroup parent) { 6189 // Always pass in null so that we will get a new CheckedTextView 6190 // Otherwise, an item which was previously used as an <optgroup> 6191 // element (i.e. has no check), could get used as an <option> 6192 // element, which needs a checkbox/radio, but it would not have 6193 // one. 6194 convertView = super.getView(position, null, parent); 6195 Container c = item(position); 6196 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6197 // ListView does not draw dividers between disabled and 6198 // enabled elements. Use a LinearLayout to provide dividers 6199 LinearLayout layout = new LinearLayout(mContext); 6200 layout.setOrientation(LinearLayout.VERTICAL); 6201 if (position > 0) { 6202 View dividerTop = new View(mContext); 6203 dividerTop.setBackgroundResource( 6204 android.R.drawable.divider_horizontal_bright); 6205 layout.addView(dividerTop); 6206 } 6207 6208 if (Container.OPTGROUP == c.mEnabled) { 6209 // Currently select_dialog_multichoice and 6210 // select_dialog_singlechoice are CheckedTextViews. If 6211 // that changes, the class cast will no longer be valid. 6212 Assert.assertTrue( 6213 convertView instanceof CheckedTextView); 6214 ((CheckedTextView) convertView).setCheckMarkDrawable( 6215 null); 6216 } else { 6217 // c.mEnabled == Container.OPTION_DISABLED 6218 // Draw the disabled element in a disabled state. 6219 convertView.setEnabled(false); 6220 } 6221 6222 layout.addView(convertView); 6223 if (position < getCount() - 1) { 6224 View dividerBottom = new View(mContext); 6225 dividerBottom.setBackgroundResource( 6226 android.R.drawable.divider_horizontal_bright); 6227 layout.addView(dividerBottom); 6228 } 6229 return layout; 6230 } 6231 return convertView; 6232 } 6233 6234 @Override 6235 public boolean hasStableIds() { 6236 // AdapterView's onChanged method uses this to determine whether 6237 // to restore the old state. Return false so that the old (out 6238 // of date) state does not replace the new, valid state. 6239 return false; 6240 } 6241 6242 private Container item(int position) { 6243 if (position < 0 || position >= getCount()) { 6244 return null; 6245 } 6246 return (Container) getItem(position); 6247 } 6248 6249 @Override 6250 public long getItemId(int position) { 6251 Container item = item(position); 6252 if (item == null) { 6253 return -1; 6254 } 6255 return item.mId; 6256 } 6257 6258 @Override 6259 public boolean areAllItemsEnabled() { 6260 return false; 6261 } 6262 6263 @Override 6264 public boolean isEnabled(int position) { 6265 Container item = item(position); 6266 if (item == null) { 6267 return false; 6268 } 6269 return Container.OPTION_ENABLED == item.mEnabled; 6270 } 6271 } 6272 6273 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 6274 mMultiple = true; 6275 mSelectedArray = selected; 6276 6277 int length = array.length; 6278 mContainers = new Container[length]; 6279 for (int i = 0; i < length; i++) { 6280 mContainers[i] = new Container(); 6281 mContainers[i].mString = array[i]; 6282 mContainers[i].mEnabled = enabled[i]; 6283 mContainers[i].mId = i; 6284 } 6285 } 6286 6287 private InvokeListBox(String[] array, int[] enabled, int selection) { 6288 mSelection = selection; 6289 mMultiple = false; 6290 6291 int length = array.length; 6292 mContainers = new Container[length]; 6293 for (int i = 0; i < length; i++) { 6294 mContainers[i] = new Container(); 6295 mContainers[i].mString = array[i]; 6296 mContainers[i].mEnabled = enabled[i]; 6297 mContainers[i].mId = i; 6298 } 6299 } 6300 6301 /* 6302 * Whenever the data set changes due to filtering, this class ensures 6303 * that the checked item remains checked. 6304 */ 6305 private class SingleDataSetObserver extends DataSetObserver { 6306 private long mCheckedId; 6307 private ListView mListView; 6308 private Adapter mAdapter; 6309 6310 /* 6311 * Create a new observer. 6312 * @param id The ID of the item to keep checked. 6313 * @param l ListView for getting and clearing the checked states 6314 * @param a Adapter for getting the IDs 6315 */ 6316 public SingleDataSetObserver(long id, ListView l, Adapter a) { 6317 mCheckedId = id; 6318 mListView = l; 6319 mAdapter = a; 6320 } 6321 6322 public void onChanged() { 6323 // The filter may have changed which item is checked. Find the 6324 // item that the ListView thinks is checked. 6325 int position = mListView.getCheckedItemPosition(); 6326 long id = mAdapter.getItemId(position); 6327 if (mCheckedId != id) { 6328 // Clear the ListView's idea of the checked item, since 6329 // it is incorrect 6330 mListView.clearChoices(); 6331 // Search for mCheckedId. If it is in the filtered list, 6332 // mark it as checked 6333 int count = mAdapter.getCount(); 6334 for (int i = 0; i < count; i++) { 6335 if (mAdapter.getItemId(i) == mCheckedId) { 6336 mListView.setItemChecked(i, true); 6337 break; 6338 } 6339 } 6340 } 6341 } 6342 6343 public void onInvalidate() {} 6344 } 6345 6346 public void run() { 6347 final ListView listView = (ListView) LayoutInflater.from(mContext) 6348 .inflate(com.android.internal.R.layout.select_dialog, null); 6349 final MyArrayListAdapter adapter = new 6350 MyArrayListAdapter(mContext, mContainers, mMultiple); 6351 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 6352 .setView(listView).setCancelable(true) 6353 .setInverseBackgroundForced(true); 6354 6355 if (mMultiple) { 6356 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 6357 public void onClick(DialogInterface dialog, int which) { 6358 mWebViewCore.sendMessage( 6359 EventHub.LISTBOX_CHOICES, 6360 adapter.getCount(), 0, 6361 listView.getCheckedItemPositions()); 6362 }}); 6363 b.setNegativeButton(android.R.string.cancel, 6364 new DialogInterface.OnClickListener() { 6365 public void onClick(DialogInterface dialog, int which) { 6366 mWebViewCore.sendMessage( 6367 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6368 }}); 6369 } 6370 final AlertDialog dialog = b.create(); 6371 listView.setAdapter(adapter); 6372 listView.setFocusableInTouchMode(true); 6373 // There is a bug (1250103) where the checks in a ListView with 6374 // multiple items selected are associated with the positions, not 6375 // the ids, so the items do not properly retain their checks when 6376 // filtered. Do not allow filtering on multiple lists until 6377 // that bug is fixed. 6378 6379 listView.setTextFilterEnabled(!mMultiple); 6380 if (mMultiple) { 6381 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 6382 int length = mSelectedArray.length; 6383 for (int i = 0; i < length; i++) { 6384 listView.setItemChecked(mSelectedArray[i], true); 6385 } 6386 } else { 6387 listView.setOnItemClickListener(new OnItemClickListener() { 6388 public void onItemClick(AdapterView parent, View v, 6389 int position, long id) { 6390 mWebViewCore.sendMessage( 6391 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 6392 dialog.dismiss(); 6393 } 6394 }); 6395 if (mSelection != -1) { 6396 listView.setSelection(mSelection); 6397 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 6398 listView.setItemChecked(mSelection, true); 6399 DataSetObserver observer = new SingleDataSetObserver( 6400 adapter.getItemId(mSelection), listView, adapter); 6401 adapter.registerDataSetObserver(observer); 6402 } 6403 } 6404 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 6405 public void onCancel(DialogInterface dialog) { 6406 mWebViewCore.sendMessage( 6407 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6408 } 6409 }); 6410 dialog.show(); 6411 } 6412 } 6413 6414 /* 6415 * Request a dropdown menu for a listbox with multiple selection. 6416 * 6417 * @param array Labels for the listbox. 6418 * @param enabledArray State for each element in the list. See static 6419 * integers in Container class. 6420 * @param selectedArray Which positions are initally selected. 6421 */ 6422 void requestListBox(String[] array, int[] enabledArray, int[] 6423 selectedArray) { 6424 mPrivateHandler.post( 6425 new InvokeListBox(array, enabledArray, selectedArray)); 6426 } 6427 6428 private void updateZoomRange(WebViewCore.RestoreState restoreState, 6429 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 6430 if (restoreState.mMinScale == 0) { 6431 if (restoreState.mMobileSite) { 6432 if (minPrefWidth > Math.max(0, viewWidth)) { 6433 mMinZoomScale = (float) viewWidth / minPrefWidth; 6434 mMinZoomScaleFixed = false; 6435 if (updateZoomOverview) { 6436 WebSettings settings = getSettings(); 6437 mInZoomOverview = settings.getUseWideViewPort() && 6438 settings.getLoadWithOverviewMode(); 6439 } 6440 } else { 6441 mMinZoomScale = restoreState.mDefaultScale; 6442 mMinZoomScaleFixed = true; 6443 } 6444 } else { 6445 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 6446 mMinZoomScaleFixed = false; 6447 } 6448 } else { 6449 mMinZoomScale = restoreState.mMinScale; 6450 mMinZoomScaleFixed = true; 6451 } 6452 if (restoreState.mMaxScale == 0) { 6453 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 6454 } else { 6455 mMaxZoomScale = restoreState.mMaxScale; 6456 } 6457 } 6458 6459 /* 6460 * Request a dropdown menu for a listbox with single selection or a single 6461 * <select> element. 6462 * 6463 * @param array Labels for the listbox. 6464 * @param enabledArray State for each element in the list. See static 6465 * integers in Container class. 6466 * @param selection Which position is initally selected. 6467 */ 6468 void requestListBox(String[] array, int[] enabledArray, int selection) { 6469 mPrivateHandler.post( 6470 new InvokeListBox(array, enabledArray, selection)); 6471 } 6472 6473 // called by JNI 6474 private void sendMoveFocus(int frame, int node) { 6475 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 6476 new WebViewCore.CursorData(frame, node, 0, 0)); 6477 } 6478 6479 // called by JNI 6480 private void sendMoveMouse(int frame, int node, int x, int y) { 6481 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 6482 new WebViewCore.CursorData(frame, node, x, y)); 6483 } 6484 6485 /* 6486 * Send a mouse move event to the webcore thread. 6487 * 6488 * @param removeFocus Pass true if the "mouse" cursor is now over a node 6489 * which wants key events, but it is not the focus. This 6490 * will make the visual appear as though nothing is in 6491 * focus. Remove the WebTextView, if present, and stop 6492 * drawing the blinking caret. 6493 * called by JNI 6494 */ 6495 private void sendMoveMouseIfLatest(boolean removeFocus) { 6496 if (removeFocus) { 6497 clearTextEntry(); 6498 setFocusControllerInactive(); 6499 } 6500 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 6501 cursorData()); 6502 } 6503 6504 // called by JNI 6505 private void sendMotionUp(int touchGeneration, 6506 int frame, int node, int x, int y) { 6507 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6508 touchUpData.mMoveGeneration = touchGeneration; 6509 touchUpData.mFrame = frame; 6510 touchUpData.mNode = node; 6511 touchUpData.mX = x; 6512 touchUpData.mY = y; 6513 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6514 } 6515 6516 6517 private int getScaledMaxXScroll() { 6518 int width; 6519 if (mHeightCanMeasure == false) { 6520 width = getViewWidth() / 4; 6521 } else { 6522 Rect visRect = new Rect(); 6523 calcOurVisibleRect(visRect); 6524 width = visRect.width() / 2; 6525 } 6526 // FIXME the divisor should be retrieved from somewhere 6527 return viewToContentX(width); 6528 } 6529 6530 private int getScaledMaxYScroll() { 6531 int height; 6532 if (mHeightCanMeasure == false) { 6533 height = getViewHeight() / 4; 6534 } else { 6535 Rect visRect = new Rect(); 6536 calcOurVisibleRect(visRect); 6537 height = visRect.height() / 2; 6538 } 6539 // FIXME the divisor should be retrieved from somewhere 6540 // the closest thing today is hard-coded into ScrollView.java 6541 // (from ScrollView.java, line 363) int maxJump = height/2; 6542 return Math.round(height * mInvActualScale); 6543 } 6544 6545 /** 6546 * Called by JNI to invalidate view 6547 */ 6548 private void viewInvalidate() { 6549 invalidate(); 6550 } 6551 6552 // return true if the key was handled 6553 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 6554 long time, boolean ignorePlugin) { 6555 if (mNativeClass == 0) { 6556 return false; 6557 } 6558 if (ignorePlugin == false && nativeFocusIsPlugin()) { 6559 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 6560 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 6561 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 6562 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 6563 , 0, 0, 0); 6564 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 6565 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 6566 return true; 6567 } 6568 mLastCursorTime = time; 6569 mLastCursorBounds = nativeGetCursorRingBounds(); 6570 boolean keyHandled 6571 = nativeMoveCursor(keyCode, count, noScroll) == false; 6572 if (DebugFlags.WEB_VIEW) { 6573 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 6574 + " mLastCursorTime=" + mLastCursorTime 6575 + " handled=" + keyHandled); 6576 } 6577 if (keyHandled == false || mHeightCanMeasure == false) { 6578 return keyHandled; 6579 } 6580 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 6581 if (contentCursorRingBounds.isEmpty()) return keyHandled; 6582 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 6583 Rect visRect = new Rect(); 6584 calcOurVisibleRect(visRect); 6585 Rect outset = new Rect(visRect); 6586 int maxXScroll = visRect.width() / 2; 6587 int maxYScroll = visRect.height() / 2; 6588 outset.inset(-maxXScroll, -maxYScroll); 6589 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 6590 return keyHandled; 6591 } 6592 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 6593 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 6594 maxXScroll); 6595 if (maxH > 0) { 6596 pinScrollBy(maxH, 0, true, 0); 6597 } else { 6598 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 6599 -maxXScroll); 6600 if (maxH < 0) { 6601 pinScrollBy(maxH, 0, true, 0); 6602 } 6603 } 6604 if (mLastCursorBounds.isEmpty()) return keyHandled; 6605 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 6606 return keyHandled; 6607 } 6608 if (DebugFlags.WEB_VIEW) { 6609 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 6610 + contentCursorRingBounds); 6611 } 6612 requestRectangleOnScreen(viewCursorRingBounds); 6613 mUserScroll = true; 6614 return keyHandled; 6615 } 6616 6617 /** 6618 * Set the background color. It's white by default. Pass 6619 * zero to make the view transparent. 6620 * @param color the ARGB color described by Color.java 6621 */ 6622 public void setBackgroundColor(int color) { 6623 mBackgroundColor = color; 6624 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 6625 } 6626 6627 public void debugDump() { 6628 nativeDebugDump(); 6629 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 6630 } 6631 6632 /** 6633 * Draw the HTML page into the specified canvas. This call ignores any 6634 * view-specific zoom, scroll offset, or other changes. It does not draw 6635 * any view-specific chrome, such as progress or URL bars. 6636 * 6637 * @hide only needs to be accessible to Browser and testing 6638 */ 6639 public void drawPage(Canvas canvas) { 6640 mWebViewCore.drawContentPicture(canvas, 0, false, false); 6641 } 6642 6643 /** 6644 * Set the time to wait between passing touches to WebCore. See also the 6645 * TOUCH_SENT_INTERVAL member for further discussion. 6646 * 6647 * @hide This is only used by the DRT test application. 6648 */ 6649 public void setTouchInterval(int interval) { 6650 mCurrentTouchInterval = interval; 6651 } 6652 6653 /** 6654 * Update our cache with updatedText. 6655 * @param updatedText The new text to put in our cache. 6656 */ 6657 /* package */ void updateCachedTextfield(String updatedText) { 6658 // Also place our generation number so that when we look at the cache 6659 // we recognize that it is up to date. 6660 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 6661 } 6662 6663 private native int nativeCacheHitFramePointer(); 6664 private native Rect nativeCacheHitNodeBounds(); 6665 private native int nativeCacheHitNodePointer(); 6666 /* package */ native void nativeClearCursor(); 6667 private native void nativeCreate(int ptr); 6668 private native int nativeCursorFramePointer(); 6669 private native Rect nativeCursorNodeBounds(); 6670 private native int nativeCursorNodePointer(); 6671 /* package */ native boolean nativeCursorMatchesFocus(); 6672 private native boolean nativeCursorIntersects(Rect visibleRect); 6673 private native boolean nativeCursorIsAnchor(); 6674 private native boolean nativeCursorIsTextInput(); 6675 private native Point nativeCursorPosition(); 6676 private native String nativeCursorText(); 6677 /** 6678 * Returns true if the native cursor node says it wants to handle key events 6679 * (ala plugins). This can only be called if mNativeClass is non-zero! 6680 */ 6681 private native boolean nativeCursorWantsKeyEvents(); 6682 private native void nativeDebugDump(); 6683 private native void nativeDestroy(); 6684 private native void nativeDrawCursorRing(Canvas content); 6685 private native void nativeDestroyLayer(int layer); 6686 private native boolean nativeEvaluateLayersAnimations(int layer); 6687 private native void nativeDrawLayers(int layer, 6688 int scrollX, int scrollY, 6689 int width, int height, 6690 float scale, Canvas canvas); 6691 private native void nativeDrawMatches(Canvas canvas); 6692 private native void nativeDrawSelectionPointer(Canvas content, 6693 float scale, int x, int y, boolean extendSelection); 6694 private native void nativeDrawSelectionRegion(Canvas content); 6695 private native void nativeDumpDisplayTree(String urlOrNull); 6696 private native int nativeFindAll(String findLower, String findUpper); 6697 private native void nativeFindNext(boolean forward); 6698 /* package */ native int nativeFocusCandidateFramePointer(); 6699 private native boolean nativeFocusCandidateIsPassword(); 6700 private native boolean nativeFocusCandidateIsRtlText(); 6701 private native boolean nativeFocusCandidateIsTextInput(); 6702 /* package */ native int nativeFocusCandidateMaxLength(); 6703 /* package */ native String nativeFocusCandidateName(); 6704 private native Rect nativeFocusCandidateNodeBounds(); 6705 private native int nativeFocusCandidatePointer(); 6706 private native String nativeFocusCandidateText(); 6707 private native int nativeFocusCandidateTextSize(); 6708 /** 6709 * Returns an integer corresponding to WebView.cpp::type. 6710 * See WebTextView.setType() 6711 */ 6712 private native int nativeFocusCandidateType(); 6713 private native boolean nativeFocusIsPlugin(); 6714 /* package */ native int nativeFocusNodePointer(); 6715 private native Rect nativeGetCursorRingBounds(); 6716 private native String nativeGetSelection(); 6717 private native boolean nativeHasCursorNode(); 6718 private native boolean nativeHasFocusNode(); 6719 private native void nativeHideCursor(); 6720 private native String nativeImageURI(int x, int y); 6721 private native void nativeInstrumentReport(); 6722 /* package */ native void nativeMoveCursorToNextTextInput(); 6723 // return true if the page has been scrolled 6724 private native boolean nativeMotionUp(int x, int y, int slop); 6725 // returns false if it handled the key 6726 private native boolean nativeMoveCursor(int keyCode, int count, 6727 boolean noScroll); 6728 private native int nativeMoveGeneration(); 6729 private native void nativeMoveSelection(int x, int y, 6730 boolean extendSelection); 6731 private native boolean nativePointInNavCache(int x, int y, int slop); 6732 // Like many other of our native methods, you must make sure that 6733 // mNativeClass is not null before calling this method. 6734 private native void nativeRecordButtons(boolean focused, 6735 boolean pressed, boolean invalidate); 6736 private native void nativeSelectBestAt(Rect rect); 6737 private native void nativeSetFindIsUp(); 6738 private native void nativeSetFollowedLink(boolean followed); 6739 private native void nativeSetHeightCanMeasure(boolean measure); 6740 private native int nativeTextGeneration(); 6741 // Never call this version except by updateCachedTextfield(String) - 6742 // we always want to pass in our generation number. 6743 private native void nativeUpdateCachedTextfield(String updatedText, 6744 int generation); 6745 // return NO_LEFTEDGE means failure. 6746 private static final int NO_LEFTEDGE = -1; 6747 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 6748} 6749