WebView.java revision 93f5831ef27093ccd939077c00a6981a026a6c21
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.app.AlertDialog; 20import android.content.Context; 21import android.content.DialogInterface; 22import android.content.Intent; 23import android.content.DialogInterface.OnCancelListener; 24import android.content.pm.PackageManager; 25import android.database.DataSetObserver; 26import android.graphics.Bitmap; 27import android.graphics.Canvas; 28import android.graphics.Color; 29import android.graphics.Interpolator; 30import android.graphics.Picture; 31import android.graphics.Point; 32import android.graphics.Rect; 33import android.graphics.drawable.Drawable; 34import android.net.http.SslCertificate; 35import android.net.Uri; 36import android.os.Bundle; 37import android.os.Handler; 38import android.os.Message; 39import android.os.ServiceManager; 40import android.os.SystemClock; 41import android.text.IClipboard; 42import android.text.Selection; 43import android.text.Spannable; 44import android.util.AttributeSet; 45import android.util.EventLog; 46import android.util.Log; 47import android.util.TypedValue; 48import android.view.Gravity; 49import android.view.KeyEvent; 50import android.view.LayoutInflater; 51import android.view.MotionEvent; 52import android.view.ScaleGestureDetector; 53import android.view.SoundEffectConstants; 54import android.view.VelocityTracker; 55import android.view.View; 56import android.view.ViewConfiguration; 57import android.view.ViewGroup; 58import android.view.ViewTreeObserver; 59import android.view.animation.AlphaAnimation; 60import android.view.inputmethod.EditorInfo; 61import android.view.inputmethod.InputConnection; 62import android.view.inputmethod.InputMethodManager; 63import android.webkit.WebTextView.AutoCompleteAdapter; 64import android.webkit.WebViewCore.EventHub; 65import android.widget.AbsoluteLayout; 66import android.widget.Adapter; 67import android.widget.AdapterView; 68import android.widget.ArrayAdapter; 69import android.widget.CheckedTextView; 70import android.widget.FrameLayout; 71import android.widget.LinearLayout; 72import android.widget.ListView; 73import android.widget.Scroller; 74import android.widget.Toast; 75import android.widget.ZoomButtonsController; 76import android.widget.ZoomControls; 77import android.widget.AdapterView.OnItemClickListener; 78 79import java.io.File; 80import java.io.FileInputStream; 81import java.io.FileNotFoundException; 82import java.io.FileOutputStream; 83import java.io.IOException; 84import java.net.URLDecoder; 85import java.util.ArrayList; 86import java.util.List; 87import java.util.HashMap; 88import java.util.Map; 89import java.util.Set; 90 91import junit.framework.Assert; 92 93/** 94 * <p>A View that displays web pages. This class is the basis upon which you 95 * can roll your own web browser or simply display some online content within your Activity. 96 * It uses the WebKit rendering engine to display 97 * web pages and includes methods to navigate forward and backward 98 * through a history, zoom in and out, perform text searches and more.</p> 99 * <p>To enable the built-in zoom, set 100 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 101 * (introduced in API version 3). 102 * <p>Note that, in order for your Activity to access the Internet and load web pages 103 * in a WebView, you must add the <var>INTERNET</var> permissions to your 104 * Android Manifest file:</p> 105 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 106 * 107 * <p>This must be a child of the <code><manifest></code> element.</p> 108 * 109 * <h3>Basic usage</h3> 110 * 111 * <p>By default, a WebView provides no browser-like widgets, does not 112 * enable JavaScript and errors will be ignored. If your goal is only 113 * to display some HTML as a part of your UI, this is probably fine; 114 * the user won't need to interact with the web page beyond reading 115 * it, and the web page won't need to interact with the user. If you 116 * actually want a fully blown web browser, then you probably want to 117 * invoke the Browser application with your URL rather than show it 118 * with a WebView. See {@link android.content.Intent} for more information.</p> 119 * 120 * <pre class="prettyprint"> 121 * WebView webview = new WebView(this); 122 * setContentView(webview); 123 * 124 * // Simplest usage: note that an exception will NOT be thrown 125 * // if there is an error loading this page (see below). 126 * webview.loadUrl("http://slashdot.org/"); 127 * 128 * // Of course you can also load from any string: 129 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 130 * webview.loadData(summary, "text/html", "utf-8"); 131 * // ... although note that there are restrictions on what this HTML can do. 132 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 133 * </pre> 134 * 135 * <p>A WebView has several customization points where you can add your 136 * own behavior. These are:</p> 137 * 138 * <ul> 139 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 140 * This class is called when something that might impact a 141 * browser UI happens, for instance, progress updates and 142 * JavaScript alerts are sent here. 143 * </li> 144 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 145 * It will be called when things happen that impact the 146 * rendering of the content, eg, errors or form submissions. You 147 * can also intercept URL loading here.</li> 148 * <li>Via the {@link android.webkit.WebSettings} class, which contains 149 * miscellaneous configuration. </li> 150 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 151 * This lets you bind Java objects into the WebView so they can be 152 * controlled from the web pages JavaScript.</li> 153 * </ul> 154 * 155 * <p>Here's a more complicated example, showing error handling, 156 * settings, and progress notification:</p> 157 * 158 * <pre class="prettyprint"> 159 * // Let's display the progress in the activity title bar, like the 160 * // browser app does. 161 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 162 * 163 * webview.getSettings().setJavaScriptEnabled(true); 164 * 165 * final Activity activity = this; 166 * webview.setWebChromeClient(new WebChromeClient() { 167 * public void onProgressChanged(WebView view, int progress) { 168 * // Activities and WebViews measure progress with different scales. 169 * // The progress meter will automatically disappear when we reach 100% 170 * activity.setProgress(progress * 1000); 171 * } 172 * }); 173 * webview.setWebViewClient(new WebViewClient() { 174 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 175 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 176 * } 177 * }); 178 * 179 * webview.loadUrl("http://slashdot.org/"); 180 * </pre> 181 * 182 * <h3>Cookie and window management</h3> 183 * 184 * <p>For obvious security reasons, your application has its own 185 * cache, cookie store etc - it does not share the Browser 186 * applications data. Cookies are managed on a separate thread, so 187 * operations like index building don't block the UI 188 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 189 * if you want to use cookies in your application. 190 * </p> 191 * 192 * <p>By default, requests by the HTML to open new windows are 193 * ignored. This is true whether they be opened by JavaScript or by 194 * the target attribute on a link. You can customize your 195 * WebChromeClient to provide your own behaviour for opening multiple windows, 196 * and render them in whatever manner you want.</p> 197 * 198 * <p>Standard behavior for an Activity is to be destroyed and 199 * recreated when the devices orientation is changed. This will cause 200 * the WebView to reload the current page. If you don't want that, you 201 * can set your Activity to handle the orientation and keyboardHidden 202 * changes, and then just leave the WebView alone. It'll automatically 203 * re-orient itself as appropriate.</p> 204 */ 205public class WebView extends AbsoluteLayout 206 implements ViewTreeObserver.OnGlobalFocusChangeListener, 207 ViewGroup.OnHierarchyChangeListener { 208 209 // enable debug output for drag trackers 210 private static final boolean DEBUG_DRAG_TRACKER = false; 211 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 212 // the screen all-the-time. Good for profiling our drawing code 213 static private final boolean AUTO_REDRAW_HACK = false; 214 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 215 private boolean mAutoRedraw; 216 private int mRootLayer; // C++ pointer to the root layer 217 218 static final String LOGTAG = "webview"; 219 220 private static class ExtendedZoomControls extends FrameLayout { 221 public ExtendedZoomControls(Context context, AttributeSet attrs) { 222 super(context, attrs); 223 LayoutInflater inflater = (LayoutInflater) 224 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 225 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 226 mPlusMinusZoomControls = (ZoomControls) findViewById( 227 com.android.internal.R.id.zoomControls); 228 findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( 229 View.GONE); 230 } 231 232 public void show(boolean showZoom, boolean canZoomOut) { 233 mPlusMinusZoomControls.setVisibility( 234 showZoom ? View.VISIBLE : View.GONE); 235 fade(View.VISIBLE, 0.0f, 1.0f); 236 } 237 238 public void hide() { 239 fade(View.GONE, 1.0f, 0.0f); 240 } 241 242 private void fade(int visibility, float startAlpha, float endAlpha) { 243 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 244 anim.setDuration(500); 245 startAnimation(anim); 246 setVisibility(visibility); 247 } 248 249 public boolean hasFocus() { 250 return mPlusMinusZoomControls.hasFocus(); 251 } 252 253 public void setOnZoomInClickListener(OnClickListener listener) { 254 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 255 } 256 257 public void setOnZoomOutClickListener(OnClickListener listener) { 258 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 259 } 260 261 ZoomControls mPlusMinusZoomControls; 262 } 263 264 /** 265 * Transportation object for returning WebView across thread boundaries. 266 */ 267 public class WebViewTransport { 268 private WebView mWebview; 269 270 /** 271 * Set the WebView to the transportation object. 272 * @param webview The WebView to transport. 273 */ 274 public synchronized void setWebView(WebView webview) { 275 mWebview = webview; 276 } 277 278 /** 279 * Return the WebView object. 280 * @return WebView The transported WebView object. 281 */ 282 public synchronized WebView getWebView() { 283 return mWebview; 284 } 285 } 286 287 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 288 private final CallbackProxy mCallbackProxy; 289 290 private final WebViewDatabase mDatabase; 291 292 // SSL certificate for the main top-level page (if secure) 293 private SslCertificate mCertificate; 294 295 // Native WebView pointer that is 0 until the native object has been 296 // created. 297 private int mNativeClass; 298 // This would be final but it needs to be set to null when the WebView is 299 // destroyed. 300 private WebViewCore mWebViewCore; 301 // Handler for dispatching UI messages. 302 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 303 private WebTextView mWebTextView; 304 // Used to ignore changes to webkit text that arrives to the UI side after 305 // more key events. 306 private int mTextGeneration; 307 308 // Used by WebViewCore to create child views. 309 /* package */ final ViewManager mViewManager; 310 311 // Used to display in full screen mode 312 PluginFullScreenHolder mFullScreenHolder; 313 314 /** 315 * Position of the last touch event. 316 */ 317 private float mLastTouchX; 318 private float mLastTouchY; 319 320 /** 321 * Time of the last touch event. 322 */ 323 private long mLastTouchTime; 324 325 /** 326 * Time of the last time sending touch event to WebViewCore 327 */ 328 private long mLastSentTouchTime; 329 330 /** 331 * The minimum elapsed time before sending another ACTION_MOVE event to 332 * WebViewCore. This really should be tuned for each type of the devices. 333 * For example in Google Map api test case, it takes Dream device at least 334 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 335 * triggering the layout and drawing the picture. While the same process 336 * takes 60+ms on the current high speed device. If we make 337 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 338 * to WebViewCore queue and the real layout and draw events will be pushed 339 * to further, which slows down the refresh rate. Choose 50 to favor the 340 * current high speed devices. For Dream like devices, 100 is a better 341 * choice. Maybe make this in the buildspec later. 342 */ 343 private static final int TOUCH_SENT_INTERVAL = 50; 344 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 345 346 /** 347 * Helper class to get velocity for fling 348 */ 349 VelocityTracker mVelocityTracker; 350 private int mMaximumFling; 351 private float mLastVelocity; 352 private float mLastVelX; 353 private float mLastVelY; 354 355 /** 356 * Touch mode 357 */ 358 private int mTouchMode = TOUCH_DONE_MODE; 359 private static final int TOUCH_INIT_MODE = 1; 360 private static final int TOUCH_DRAG_START_MODE = 2; 361 private static final int TOUCH_DRAG_MODE = 3; 362 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 363 private static final int TOUCH_SHORTPRESS_MODE = 5; 364 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 365 private static final int TOUCH_DONE_MODE = 7; 366 private static final int TOUCH_SELECT_MODE = 8; 367 private static final int TOUCH_PINCH_DRAG = 9; 368 369 // Whether to forward the touch events to WebCore 370 private boolean mForwardTouchEvents = false; 371 372 // Whether to prevent drag during touch. The initial value depends on 373 // mForwardTouchEvents. If WebCore wants touch events, we assume it will 374 // take control of touch events unless it says no for touch down event. 375 private static final int PREVENT_DRAG_NO = 0; 376 private static final int PREVENT_DRAG_MAYBE_YES = 1; 377 private static final int PREVENT_DRAG_YES = 2; 378 private static final int PREVENT_DRAG_CANCEL = 3; 379 private int mPreventDrag = PREVENT_DRAG_NO; 380 381 // by default mPreventLongPress is false. If it is true, long press event 382 // will be handled by WebKit instead of UI. 383 private boolean mPreventLongPress = false; 384 // by default mPreventDoubleTap is false. If it is true, double tap event 385 // will be handled by WebKit instead of UI. 386 private boolean mPreventDoubleTap = false; 387 388 // this needs to be in sync with the logic in WebKit's 389 // EventHandler::handleTouchEvent() 390 private static final int TOUCH_PREVENT_DRAG = 0x1; 391 private static final int TOUCH_PREVENT_LONGPRESS = 0x2; 392 private static final int TOUCH_PREVENT_DOUBLETAP = 0x4; 393 394 // To keep track of whether the current drag was initiated by a WebTextView, 395 // so that we know not to hide the cursor 396 boolean mDragFromTextInput; 397 398 // Whether or not to draw the cursor ring. 399 private boolean mDrawCursorRing = true; 400 401 // true if onPause has been called (and not onResume) 402 private boolean mIsPaused; 403 404 /** 405 * Customizable constant 406 */ 407 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 408 private int mTouchSlopSquare; 409 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 410 private int mDoubleTapSlopSquare; 411 // pre-computed density adjusted navigation slop 412 private int mNavSlop; 413 // This should be ViewConfiguration.getTapTimeout() 414 // But system time out is 100ms, which is too short for the browser. 415 // In the browser, if it switches out of tap too soon, jump tap won't work. 416 private static final int TAP_TIMEOUT = 200; 417 // This should be ViewConfiguration.getLongPressTimeout() 418 // But system time out is 500ms, which is too short for the browser. 419 // With a short timeout, it's difficult to treat trigger a short press. 420 private static final int LONG_PRESS_TIMEOUT = 1000; 421 // needed to avoid flinging after a pause of no movement 422 private static final int MIN_FLING_TIME = 250; 423 // draw unfiltered after drag is held without movement 424 private static final int MOTIONLESS_TIME = 100; 425 // The time that the Zoom Controls are visible before fading away 426 private static final long ZOOM_CONTROLS_TIMEOUT = 427 ViewConfiguration.getZoomControlsTimeout(); 428 // The amount of content to overlap between two screens when going through 429 // pages with the space bar, in pixels. 430 private static final int PAGE_SCROLL_OVERLAP = 24; 431 432 /** 433 * These prevent calling requestLayout if either dimension is fixed. This 434 * depends on the layout parameters and the measure specs. 435 */ 436 boolean mWidthCanMeasure; 437 boolean mHeightCanMeasure; 438 439 // Remember the last dimensions we sent to the native side so we can avoid 440 // sending the same dimensions more than once. 441 int mLastWidthSent; 442 int mLastHeightSent; 443 444 private int mContentWidth; // cache of value from WebViewCore 445 private int mContentHeight; // cache of value from WebViewCore 446 447 // Need to have the separate control for horizontal and vertical scrollbar 448 // style than the View's single scrollbar style 449 private boolean mOverlayHorizontalScrollbar = true; 450 private boolean mOverlayVerticalScrollbar = false; 451 452 // our standard speed. this way small distances will be traversed in less 453 // time than large distances, but we cap the duration, so that very large 454 // distances won't take too long to get there. 455 private static final int STD_SPEED = 480; // pixels per second 456 // time for the longest scroll animation 457 private static final int MAX_DURATION = 750; // milliseconds 458 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 459 private Scroller mScroller; 460 461 private boolean mWrapContent; 462 private static final int MOTIONLESS_FALSE = 0; 463 private static final int MOTIONLESS_PENDING = 1; 464 private static final int MOTIONLESS_TRUE = 2; 465 private int mHeldMotionless; 466 467 // whether support multi-touch 468 private boolean mSupportMultiTouch; 469 // use the framework's ScaleGestureDetector to handle multi-touch 470 private ScaleGestureDetector mScaleDetector; 471 // minimum scale change during multi-touch zoom 472 private static float PREVIEW_SCALE_INCREMENT = 0.01f; 473 474 // the anchor point in the document space where VIEW_SIZE_CHANGED should 475 // apply to 476 private int mAnchorX; 477 private int mAnchorY; 478 479 /** 480 * Private message ids 481 */ 482 private static final int REMEMBER_PASSWORD = 1; 483 private static final int NEVER_REMEMBER_PASSWORD = 2; 484 private static final int SWITCH_TO_SHORTPRESS = 3; 485 private static final int SWITCH_TO_LONGPRESS = 4; 486 private static final int RELEASE_SINGLE_TAP = 5; 487 private static final int REQUEST_FORM_DATA = 6; 488 private static final int RESUME_WEBCORE_PRIORITY = 7; 489 private static final int DRAG_HELD_MOTIONLESS = 8; 490 private static final int AWAKEN_SCROLL_BARS = 9; 491 492 //! arg1=x, arg2=y 493 static final int SCROLL_TO_MSG_ID = 10; 494 static final int SCROLL_BY_MSG_ID = 11; 495 //! arg1=x, arg2=y 496 static final int SPAWN_SCROLL_TO_MSG_ID = 12; 497 //! arg1=x, arg2=y 498 static final int SYNC_SCROLL_TO_MSG_ID = 13; 499 static final int NEW_PICTURE_MSG_ID = 14; 500 static final int UPDATE_TEXT_ENTRY_MSG_ID = 15; 501 static final int WEBCORE_INITIALIZED_MSG_ID = 16; 502 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 17; 503 static final int UPDATE_ZOOM_RANGE = 18; 504 static final int MOVE_OUT_OF_PLUGIN = 19; 505 static final int CLEAR_TEXT_ENTRY = 20; 506 static final int UPDATE_TEXT_SELECTION_MSG_ID = 21; 507 static final int SHOW_RECT_MSG_ID = 22; 508 static final int LONG_PRESS_CENTER = 23; 509 static final int PREVENT_TOUCH_ID = 24; 510 static final int WEBCORE_NEED_TOUCH_EVENTS = 25; 511 // obj=Rect in doc coordinates 512 static final int INVAL_RECT_MSG_ID = 26; 513 static final int REQUEST_KEYBOARD = 27; 514 static final int DO_MOTION_UP = 28; 515 static final int SHOW_FULLSCREEN = 29; 516 static final int HIDE_FULLSCREEN = 30; 517 static final int DOM_FOCUS_CHANGED = 31; 518 static final int IMMEDIATE_REPAINT_MSG_ID = 32; 519 static final int SET_ROOT_LAYER_MSG_ID = 33; 520 static final int RETURN_LABEL = 34; 521 static final int FIND_AGAIN = 35; 522 523 static final String[] HandlerDebugString = { 524 "REMEMBER_PASSWORD", // = 1; 525 "NEVER_REMEMBER_PASSWORD", // = 2; 526 "SWITCH_TO_SHORTPRESS", // = 3; 527 "SWITCH_TO_LONGPRESS", // = 4; 528 "RELEASE_SINGLE_TAP", // = 5; 529 "REQUEST_FORM_DATA", // = 6; 530 "RESUME_WEBCORE_PRIORITY", // = 7; 531 "DRAG_HELD_MOTIONLESS", // = 8; 532 "AWAKEN_SCROLL_BARS", // = 9; 533 "SCROLL_TO_MSG_ID", // = 10; 534 "SCROLL_BY_MSG_ID", // = 11; 535 "SPAWN_SCROLL_TO_MSG_ID", // = 12; 536 "SYNC_SCROLL_TO_MSG_ID", // = 13; 537 "NEW_PICTURE_MSG_ID", // = 14; 538 "UPDATE_TEXT_ENTRY_MSG_ID", // = 15; 539 "WEBCORE_INITIALIZED_MSG_ID", // = 16; 540 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 17; 541 "UPDATE_ZOOM_RANGE", // = 18; 542 "MOVE_OUT_OF_PLUGIN", // = 19; 543 "CLEAR_TEXT_ENTRY", // = 20; 544 "UPDATE_TEXT_SELECTION_MSG_ID", // = 21; 545 "SHOW_RECT_MSG_ID", // = 22; 546 "LONG_PRESS_CENTER", // = 23; 547 "PREVENT_TOUCH_ID", // = 24; 548 "WEBCORE_NEED_TOUCH_EVENTS", // = 25; 549 "INVAL_RECT_MSG_ID", // = 26; 550 "REQUEST_KEYBOARD", // = 27; 551 "DO_MOTION_UP", // = 28; 552 "SHOW_FULLSCREEN", // = 29; 553 "HIDE_FULLSCREEN", // = 30; 554 "DOM_FOCUS_CHANGED", // = 31; 555 "IMMEDIATE_REPAINT_MSG_ID", // = 32; 556 "SET_ROOT_LAYER_MSG_ID", // = 33; 557 "RETURN_LABEL", // = 34; 558 "FIND_AGAIN" // = 35; 559 }; 560 561 // If the site doesn't use the viewport meta tag to specify the viewport, 562 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 563 static final int DEFAULT_VIEWPORT_WIDTH = 800; 564 565 // normally we try to fit the content to the minimum preferred width 566 // calculated by the Webkit. To avoid the bad behavior when some site's 567 // minimum preferred width keeps growing when changing the viewport width or 568 // the minimum preferred width is huge, an upper limit is needed. 569 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 570 571 // default scale limit. Depending on the display density 572 private static float DEFAULT_MAX_ZOOM_SCALE; 573 private static float DEFAULT_MIN_ZOOM_SCALE; 574 // scale limit, which can be set through viewport meta tag in the web page 575 private float mMaxZoomScale; 576 private float mMinZoomScale; 577 private boolean mMinZoomScaleFixed = true; 578 579 // initial scale in percent. 0 means using default. 580 private int mInitialScaleInPercent = 0; 581 582 // while in the zoom overview mode, the page's width is fully fit to the 583 // current window. The page is alive, in another words, you can click to 584 // follow the links. Double tap will toggle between zoom overview mode and 585 // the last zoom scale. 586 boolean mInZoomOverview = false; 587 588 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 589 // engadget always have wider mContentWidth no matter what viewport size is. 590 int mZoomOverviewWidth = DEFAULT_VIEWPORT_WIDTH; 591 float mTextWrapScale; 592 593 // default scale. Depending on the display density. 594 static int DEFAULT_SCALE_PERCENT; 595 private float mDefaultScale; 596 597 // set to true temporarily during ScaleGesture triggered zoom 598 private boolean mPreviewZoomOnly = false; 599 600 // computed scale and inverse, from mZoomWidth. 601 private float mActualScale; 602 private float mInvActualScale; 603 // if this is non-zero, it is used on drawing rather than mActualScale 604 private float mZoomScale; 605 private float mInvInitialZoomScale; 606 private float mInvFinalZoomScale; 607 private int mInitialScrollX; 608 private int mInitialScrollY; 609 private long mZoomStart; 610 private static final int ZOOM_ANIMATION_LENGTH = 500; 611 612 private boolean mUserScroll = false; 613 614 private int mSnapScrollMode = SNAP_NONE; 615 private static final int SNAP_NONE = 0; 616 private static final int SNAP_LOCK = 1; // not a separate state 617 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 618 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 619 private boolean mSnapPositive; 620 621 // Used to match key downs and key ups 622 private boolean mGotKeyDown; 623 624 /* package */ static boolean mLogEvent = true; 625 626 // for event log 627 private long mLastTouchUpTime = 0; 628 629 /** 630 * URI scheme for telephone number 631 */ 632 public static final String SCHEME_TEL = "tel:"; 633 /** 634 * URI scheme for email address 635 */ 636 public static final String SCHEME_MAILTO = "mailto:"; 637 /** 638 * URI scheme for map address 639 */ 640 public static final String SCHEME_GEO = "geo:0,0?q="; 641 642 private int mBackgroundColor = Color.WHITE; 643 644 // Used to notify listeners of a new picture. 645 private PictureListener mPictureListener; 646 /** 647 * Interface to listen for new pictures as they change. 648 */ 649 public interface PictureListener { 650 /** 651 * Notify the listener that the picture has changed. 652 * @param view The WebView that owns the picture. 653 * @param picture The new picture. 654 */ 655 public void onNewPicture(WebView view, Picture picture); 656 } 657 658 // FIXME: Want to make this public, but need to change the API file. 659 public /*static*/ class HitTestResult { 660 /** 661 * Default HitTestResult, where the target is unknown 662 */ 663 public static final int UNKNOWN_TYPE = 0; 664 /** 665 * HitTestResult for hitting a HTML::a tag 666 */ 667 public static final int ANCHOR_TYPE = 1; 668 /** 669 * HitTestResult for hitting a phone number 670 */ 671 public static final int PHONE_TYPE = 2; 672 /** 673 * HitTestResult for hitting a map address 674 */ 675 public static final int GEO_TYPE = 3; 676 /** 677 * HitTestResult for hitting an email address 678 */ 679 public static final int EMAIL_TYPE = 4; 680 /** 681 * HitTestResult for hitting an HTML::img tag 682 */ 683 public static final int IMAGE_TYPE = 5; 684 /** 685 * HitTestResult for hitting a HTML::a tag which contains HTML::img 686 */ 687 public static final int IMAGE_ANCHOR_TYPE = 6; 688 /** 689 * HitTestResult for hitting a HTML::a tag with src=http 690 */ 691 public static final int SRC_ANCHOR_TYPE = 7; 692 /** 693 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 694 */ 695 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 696 /** 697 * HitTestResult for hitting an edit text area 698 */ 699 public static final int EDIT_TEXT_TYPE = 9; 700 701 private int mType; 702 private String mExtra; 703 704 HitTestResult() { 705 mType = UNKNOWN_TYPE; 706 } 707 708 private void setType(int type) { 709 mType = type; 710 } 711 712 private void setExtra(String extra) { 713 mExtra = extra; 714 } 715 716 public int getType() { 717 return mType; 718 } 719 720 public String getExtra() { 721 return mExtra; 722 } 723 } 724 725 // The View containing the zoom controls 726 private ExtendedZoomControls mZoomControls; 727 private Runnable mZoomControlRunnable; 728 729 private ZoomButtonsController mZoomButtonsController; 730 731 // These keep track of the center point of the zoom. They are used to 732 // determine the point around which we should zoom. 733 private float mZoomCenterX; 734 private float mZoomCenterY; 735 736 private ZoomButtonsController.OnZoomListener mZoomListener = 737 new ZoomButtonsController.OnZoomListener() { 738 739 public void onVisibilityChanged(boolean visible) { 740 if (visible) { 741 switchOutDrawHistory(); 742 // Bring back the hidden zoom controls. 743 mZoomButtonsController.getZoomControls().setVisibility( 744 View.VISIBLE); 745 updateZoomButtonsEnabled(); 746 } 747 } 748 749 public void onZoom(boolean zoomIn) { 750 if (zoomIn) { 751 zoomIn(); 752 } else { 753 zoomOut(); 754 } 755 756 updateZoomButtonsEnabled(); 757 } 758 }; 759 760 /** 761 * Construct a new WebView with a Context object. 762 * @param context A Context object used to access application assets. 763 */ 764 public WebView(Context context) { 765 this(context, null); 766 } 767 768 /** 769 * Construct a new WebView with layout parameters. 770 * @param context A Context object used to access application assets. 771 * @param attrs An AttributeSet passed to our parent. 772 */ 773 public WebView(Context context, AttributeSet attrs) { 774 this(context, attrs, com.android.internal.R.attr.webViewStyle); 775 } 776 777 /** 778 * Construct a new WebView with layout parameters and a default style. 779 * @param context A Context object used to access application assets. 780 * @param attrs An AttributeSet passed to our parent. 781 * @param defStyle The default style resource ID. 782 */ 783 public WebView(Context context, AttributeSet attrs, int defStyle) { 784 this(context, attrs, defStyle, null); 785 } 786 787 /** 788 * Construct a new WebView with layout parameters, a default style and a set 789 * of custom Javscript interfaces to be added to the WebView at initialization 790 * time. This guarantees that these interfaces will be available when the JS 791 * context is initialized. 792 * @param context A Context object used to access application assets. 793 * @param attrs An AttributeSet passed to our parent. 794 * @param defStyle The default style resource ID. 795 * @param javascriptInterfaces is a Map of intareface names, as keys, and 796 * object implementing those interfaces, as values. 797 * @hide pending API council approval. 798 */ 799 protected WebView(Context context, AttributeSet attrs, int defStyle, 800 Map<String, Object> javascriptInterfaces) { 801 super(context, attrs, defStyle); 802 init(); 803 804 mCallbackProxy = new CallbackProxy(context, this); 805 mViewManager = new ViewManager(this); 806 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 807 mDatabase = WebViewDatabase.getInstance(context); 808 mScroller = new Scroller(context); 809 810 mZoomButtonsController = new ZoomButtonsController(this); 811 mZoomButtonsController.setOnZoomListener(mZoomListener); 812 // ZoomButtonsController positions the buttons at the bottom, but in 813 // the middle. Change their layout parameters so they appear on the 814 // right. 815 View controls = mZoomButtonsController.getZoomControls(); 816 ViewGroup.LayoutParams params = controls.getLayoutParams(); 817 if (params instanceof FrameLayout.LayoutParams) { 818 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 819 params; 820 frameParams.gravity = Gravity.RIGHT; 821 } 822 updateMultiTouchSupport(context); 823 } 824 825 void updateMultiTouchSupport(Context context) { 826 WebSettings settings = getSettings(); 827 mSupportMultiTouch = context.getPackageManager().hasSystemFeature( 828 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 829 && settings.supportZoom() && settings.getBuiltInZoomControls(); 830 if (mSupportMultiTouch && (mScaleDetector == null)) { 831 mScaleDetector = new ScaleGestureDetector(context, 832 new ScaleDetectorListener()); 833 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 834 mScaleDetector = null; 835 } 836 } 837 838 private void updateZoomButtonsEnabled() { 839 boolean canZoomIn = mActualScale < mMaxZoomScale; 840 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 841 if (!canZoomIn && !canZoomOut) { 842 // Hide the zoom in and out buttons, as well as the fit to page 843 // button, if the page cannot zoom 844 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 845 } else { 846 // Set each one individually, as a page may be able to zoom in 847 // or out. 848 mZoomButtonsController.setZoomInEnabled(canZoomIn); 849 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 850 } 851 } 852 853 private void init() { 854 setWillNotDraw(false); 855 setFocusable(true); 856 setFocusableInTouchMode(true); 857 setClickable(true); 858 setLongClickable(true); 859 860 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 861 int slop = configuration.getScaledTouchSlop(); 862 mTouchSlopSquare = slop * slop; 863 mMinLockSnapReverseDistance = slop; 864 slop = configuration.getScaledDoubleTapSlop(); 865 mDoubleTapSlopSquare = slop * slop; 866 final float density = getContext().getResources().getDisplayMetrics().density; 867 // use one line height, 16 based on our current default font, for how 868 // far we allow a touch be away from the edge of a link 869 mNavSlop = (int) (16 * density); 870 // density adjusted scale factors 871 DEFAULT_SCALE_PERCENT = (int) (100 * density); 872 mDefaultScale = density; 873 mActualScale = density; 874 mInvActualScale = 1 / density; 875 mTextWrapScale = density; 876 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 877 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 878 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 879 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 880 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 881 } 882 883 /* package */void updateDefaultZoomDensity(int zoomDensity) { 884 final float density = getContext().getResources().getDisplayMetrics().density 885 * 100 / zoomDensity; 886 if (Math.abs(density - mDefaultScale) > 0.01) { 887 float scaleFactor = density / mDefaultScale; 888 // adjust the limits 889 mNavSlop = (int) (16 * density); 890 DEFAULT_SCALE_PERCENT = (int) (100 * density); 891 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 892 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 893 mDefaultScale = density; 894 mMaxZoomScale *= scaleFactor; 895 mMinZoomScale *= scaleFactor; 896 setNewZoomScale(mActualScale * scaleFactor, true, false); 897 } 898 } 899 900 /* package */ boolean onSavePassword(String schemePlusHost, String username, 901 String password, final Message resumeMsg) { 902 boolean rVal = false; 903 if (resumeMsg == null) { 904 // null resumeMsg implies saving password silently 905 mDatabase.setUsernamePassword(schemePlusHost, username, password); 906 } else { 907 final Message remember = mPrivateHandler.obtainMessage( 908 REMEMBER_PASSWORD); 909 remember.getData().putString("host", schemePlusHost); 910 remember.getData().putString("username", username); 911 remember.getData().putString("password", password); 912 remember.obj = resumeMsg; 913 914 final Message neverRemember = mPrivateHandler.obtainMessage( 915 NEVER_REMEMBER_PASSWORD); 916 neverRemember.getData().putString("host", schemePlusHost); 917 neverRemember.getData().putString("username", username); 918 neverRemember.getData().putString("password", password); 919 neverRemember.obj = resumeMsg; 920 921 new AlertDialog.Builder(getContext()) 922 .setTitle(com.android.internal.R.string.save_password_label) 923 .setMessage(com.android.internal.R.string.save_password_message) 924 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 925 new DialogInterface.OnClickListener() { 926 public void onClick(DialogInterface dialog, int which) { 927 resumeMsg.sendToTarget(); 928 } 929 }) 930 .setNeutralButton(com.android.internal.R.string.save_password_remember, 931 new DialogInterface.OnClickListener() { 932 public void onClick(DialogInterface dialog, int which) { 933 remember.sendToTarget(); 934 } 935 }) 936 .setNegativeButton(com.android.internal.R.string.save_password_never, 937 new DialogInterface.OnClickListener() { 938 public void onClick(DialogInterface dialog, int which) { 939 neverRemember.sendToTarget(); 940 } 941 }) 942 .setOnCancelListener(new OnCancelListener() { 943 public void onCancel(DialogInterface dialog) { 944 resumeMsg.sendToTarget(); 945 } 946 }).show(); 947 // Return true so that WebViewCore will pause while the dialog is 948 // up. 949 rVal = true; 950 } 951 return rVal; 952 } 953 954 @Override 955 public void setScrollBarStyle(int style) { 956 if (style == View.SCROLLBARS_INSIDE_INSET 957 || style == View.SCROLLBARS_OUTSIDE_INSET) { 958 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 959 } else { 960 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 961 } 962 super.setScrollBarStyle(style); 963 } 964 965 /** 966 * Specify whether the horizontal scrollbar has overlay style. 967 * @param overlay TRUE if horizontal scrollbar should have overlay style. 968 */ 969 public void setHorizontalScrollbarOverlay(boolean overlay) { 970 mOverlayHorizontalScrollbar = overlay; 971 } 972 973 /** 974 * Specify whether the vertical scrollbar has overlay style. 975 * @param overlay TRUE if vertical scrollbar should have overlay style. 976 */ 977 public void setVerticalScrollbarOverlay(boolean overlay) { 978 mOverlayVerticalScrollbar = overlay; 979 } 980 981 /** 982 * Return whether horizontal scrollbar has overlay style 983 * @return TRUE if horizontal scrollbar has overlay style. 984 */ 985 public boolean overlayHorizontalScrollbar() { 986 return mOverlayHorizontalScrollbar; 987 } 988 989 /** 990 * Return whether vertical scrollbar has overlay style 991 * @return TRUE if vertical scrollbar has overlay style. 992 */ 993 public boolean overlayVerticalScrollbar() { 994 return mOverlayVerticalScrollbar; 995 } 996 997 /* 998 * Return the width of the view where the content of WebView should render 999 * to. 1000 * Note: this can be called from WebCoreThread. 1001 */ 1002 /* package */ int getViewWidth() { 1003 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1004 return getWidth(); 1005 } else { 1006 return getWidth() - getVerticalScrollbarWidth(); 1007 } 1008 } 1009 1010 /* 1011 * returns the height of the titlebarview (if any). Does not care about 1012 * scrolling 1013 */ 1014 private int getTitleHeight() { 1015 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1016 } 1017 1018 /* 1019 * Return the amount of the titlebarview (if any) that is visible 1020 */ 1021 private int getVisibleTitleHeight() { 1022 return Math.max(getTitleHeight() - mScrollY, 0); 1023 } 1024 1025 /* 1026 * Return the height of the view where the content of WebView should render 1027 * to. Note that this excludes mTitleBar, if there is one. 1028 * Note: this can be called from WebCoreThread. 1029 */ 1030 /* package */ int getViewHeight() { 1031 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1032 } 1033 1034 private int getViewHeightWithTitle() { 1035 int height = getHeight(); 1036 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1037 height -= getHorizontalScrollbarHeight(); 1038 } 1039 return height; 1040 } 1041 1042 /** 1043 * @return The SSL certificate for the main top-level page or null if 1044 * there is no certificate (the site is not secure). 1045 */ 1046 public SslCertificate getCertificate() { 1047 return mCertificate; 1048 } 1049 1050 /** 1051 * Sets the SSL certificate for the main top-level page. 1052 */ 1053 public void setCertificate(SslCertificate certificate) { 1054 // here, the certificate can be null (if the site is not secure) 1055 mCertificate = certificate; 1056 } 1057 1058 //------------------------------------------------------------------------- 1059 // Methods called by activity 1060 //------------------------------------------------------------------------- 1061 1062 /** 1063 * Save the username and password for a particular host in the WebView's 1064 * internal database. 1065 * @param host The host that required the credentials. 1066 * @param username The username for the given host. 1067 * @param password The password for the given host. 1068 */ 1069 public void savePassword(String host, String username, String password) { 1070 mDatabase.setUsernamePassword(host, username, password); 1071 } 1072 1073 /** 1074 * Set the HTTP authentication credentials for a given host and realm. 1075 * 1076 * @param host The host for the credentials. 1077 * @param realm The realm for the credentials. 1078 * @param username The username for the password. If it is null, it means 1079 * password can't be saved. 1080 * @param password The password 1081 */ 1082 public void setHttpAuthUsernamePassword(String host, String realm, 1083 String username, String password) { 1084 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1085 } 1086 1087 /** 1088 * Retrieve the HTTP authentication username and password for a given 1089 * host & realm pair 1090 * 1091 * @param host The host for which the credentials apply. 1092 * @param realm The realm for which the credentials apply. 1093 * @return String[] if found, String[0] is username, which can be null and 1094 * String[1] is password. Return null if it can't find anything. 1095 */ 1096 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1097 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1098 } 1099 1100 /** 1101 * Destroy the internal state of the WebView. This method should be called 1102 * after the WebView has been removed from the view system. No other 1103 * methods may be called on a WebView after destroy. 1104 */ 1105 public void destroy() { 1106 clearTextEntry(false); 1107 if (mWebViewCore != null) { 1108 // Set the handlers to null before destroying WebViewCore so no 1109 // more messages will be posted. 1110 mCallbackProxy.setWebViewClient(null); 1111 mCallbackProxy.setWebChromeClient(null); 1112 // Tell WebViewCore to destroy itself 1113 WebViewCore webViewCore = mWebViewCore; 1114 mWebViewCore = null; // prevent using partial webViewCore 1115 webViewCore.destroy(); 1116 // Remove any pending messages that might not be serviced yet. 1117 mPrivateHandler.removeCallbacksAndMessages(null); 1118 mCallbackProxy.removeCallbacksAndMessages(null); 1119 // Wake up the WebCore thread just in case it is waiting for a 1120 // javascript dialog. 1121 synchronized (mCallbackProxy) { 1122 mCallbackProxy.notify(); 1123 } 1124 } 1125 if (mNativeClass != 0) { 1126 nativeDestroy(); 1127 mNativeClass = 0; 1128 } 1129 } 1130 1131 /** 1132 * Enables platform notifications of data state and proxy changes. 1133 */ 1134 public static void enablePlatformNotifications() { 1135 Network.enablePlatformNotifications(); 1136 } 1137 1138 /** 1139 * If platform notifications are enabled, this should be called 1140 * from the Activity's onPause() or onStop(). 1141 */ 1142 public static void disablePlatformNotifications() { 1143 Network.disablePlatformNotifications(); 1144 } 1145 1146 /** 1147 * Sets JavaScript engine flags. 1148 * 1149 * @param flags JS engine flags in a String 1150 * 1151 * @hide pending API solidification 1152 */ 1153 public void setJsFlags(String flags) { 1154 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1155 } 1156 1157 /** 1158 * Inform WebView of the network state. This is used to set 1159 * the javascript property window.navigator.isOnline and 1160 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1161 * @param networkUp boolean indicating if network is available 1162 */ 1163 public void setNetworkAvailable(boolean networkUp) { 1164 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1165 networkUp ? 1 : 0, 0); 1166 } 1167 1168 /** 1169 * Inform WebView about the current network type. 1170 * {@hide} 1171 */ 1172 public void setNetworkType(String type, String subtype) { 1173 Map<String, String> map = new HashMap<String, String>(); 1174 map.put("type", type); 1175 map.put("subtype", subtype); 1176 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1177 } 1178 /** 1179 * Save the state of this WebView used in 1180 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1181 * method no longer stores the display data for this WebView. The previous 1182 * behavior could potentially leak files if {@link #restoreState} was never 1183 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1184 * and restoring the display data. 1185 * @param outState The Bundle to store the WebView state. 1186 * @return The same copy of the back/forward list used to save the state. If 1187 * saveState fails, the returned list will be null. 1188 * @see #savePicture 1189 * @see #restorePicture 1190 */ 1191 public WebBackForwardList saveState(Bundle outState) { 1192 if (outState == null) { 1193 return null; 1194 } 1195 // We grab a copy of the back/forward list because a client of WebView 1196 // may have invalidated the history list by calling clearHistory. 1197 WebBackForwardList list = copyBackForwardList(); 1198 final int currentIndex = list.getCurrentIndex(); 1199 final int size = list.getSize(); 1200 // We should fail saving the state if the list is empty or the index is 1201 // not in a valid range. 1202 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1203 return null; 1204 } 1205 outState.putInt("index", currentIndex); 1206 // FIXME: This should just be a byte[][] instead of ArrayList but 1207 // Parcel.java does not have the code to handle multi-dimensional 1208 // arrays. 1209 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1210 for (int i = 0; i < size; i++) { 1211 WebHistoryItem item = list.getItemAtIndex(i); 1212 if (null == item) { 1213 // FIXME: this shouldn't happen 1214 // need to determine how item got set to null 1215 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1216 return null; 1217 } 1218 byte[] data = item.getFlattenedData(); 1219 if (data == null) { 1220 // It would be very odd to not have any data for a given history 1221 // item. And we will fail to rebuild the history list without 1222 // flattened data. 1223 return null; 1224 } 1225 history.add(data); 1226 } 1227 outState.putSerializable("history", history); 1228 if (mCertificate != null) { 1229 outState.putBundle("certificate", 1230 SslCertificate.saveState(mCertificate)); 1231 } 1232 return list; 1233 } 1234 1235 /** 1236 * Save the current display data to the Bundle given. Used in conjunction 1237 * with {@link #saveState}. 1238 * @param b A Bundle to store the display data. 1239 * @param dest The file to store the serialized picture data. Will be 1240 * overwritten with this WebView's picture data. 1241 * @return True if the picture was successfully saved. 1242 */ 1243 public boolean savePicture(Bundle b, File dest) { 1244 if (dest == null || b == null) { 1245 return false; 1246 } 1247 final Picture p = capturePicture(); 1248 try { 1249 final FileOutputStream out = new FileOutputStream(dest); 1250 p.writeToStream(out); 1251 out.close(); 1252 } catch (FileNotFoundException e){ 1253 e.printStackTrace(); 1254 } catch (IOException e) { 1255 e.printStackTrace(); 1256 } catch (RuntimeException e) { 1257 e.printStackTrace(); 1258 } 1259 if (dest.length() > 0) { 1260 b.putInt("scrollX", mScrollX); 1261 b.putInt("scrollY", mScrollY); 1262 b.putFloat("scale", mActualScale); 1263 b.putFloat("textwrapScale", mTextWrapScale); 1264 b.putBoolean("overview", mInZoomOverview); 1265 return true; 1266 } 1267 return false; 1268 } 1269 1270 /** 1271 * Restore the display data that was save in {@link #savePicture}. Used in 1272 * conjunction with {@link #restoreState}. 1273 * @param b A Bundle containing the saved display data. 1274 * @param src The file where the picture data was stored. 1275 * @return True if the picture was successfully restored. 1276 */ 1277 public boolean restorePicture(Bundle b, File src) { 1278 if (src == null || b == null) { 1279 return false; 1280 } 1281 if (src.exists()) { 1282 Picture p = null; 1283 try { 1284 final FileInputStream in = new FileInputStream(src); 1285 p = Picture.createFromStream(in); 1286 in.close(); 1287 } catch (FileNotFoundException e){ 1288 e.printStackTrace(); 1289 } catch (RuntimeException e) { 1290 e.printStackTrace(); 1291 } catch (IOException e) { 1292 e.printStackTrace(); 1293 } 1294 if (p != null) { 1295 int sx = b.getInt("scrollX", 0); 1296 int sy = b.getInt("scrollY", 0); 1297 float scale = b.getFloat("scale", 1.0f); 1298 mDrawHistory = true; 1299 mHistoryPicture = p; 1300 mScrollX = sx; 1301 mScrollY = sy; 1302 mHistoryWidth = Math.round(p.getWidth() * scale); 1303 mHistoryHeight = Math.round(p.getHeight() * scale); 1304 // as getWidth() / getHeight() of the view are not 1305 // available yet, set up mActualScale, so that when 1306 // onSizeChanged() is called, the rest will be set 1307 // correctly 1308 mActualScale = scale; 1309 mTextWrapScale = b.getFloat("textwrapScale", scale); 1310 mInZoomOverview = b.getBoolean("overview"); 1311 invalidate(); 1312 return true; 1313 } 1314 } 1315 return false; 1316 } 1317 1318 /** 1319 * Restore the state of this WebView from the given map used in 1320 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1321 * be called to restore the state of the WebView before using the object. If 1322 * it is called after the WebView has had a chance to build state (load 1323 * pages, create a back/forward list, etc.) there may be undesirable 1324 * side-effects. Please note that this method no longer restores the 1325 * display data for this WebView. See {@link #savePicture} and {@link 1326 * #restorePicture} for saving and restoring the display data. 1327 * @param inState The incoming Bundle of state. 1328 * @return The restored back/forward list or null if restoreState failed. 1329 * @see #savePicture 1330 * @see #restorePicture 1331 */ 1332 public WebBackForwardList restoreState(Bundle inState) { 1333 WebBackForwardList returnList = null; 1334 if (inState == null) { 1335 return returnList; 1336 } 1337 if (inState.containsKey("index") && inState.containsKey("history")) { 1338 mCertificate = SslCertificate.restoreState( 1339 inState.getBundle("certificate")); 1340 1341 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1342 final int index = inState.getInt("index"); 1343 // We can't use a clone of the list because we need to modify the 1344 // shared copy, so synchronize instead to prevent concurrent 1345 // modifications. 1346 synchronized (list) { 1347 final List<byte[]> history = 1348 (List<byte[]>) inState.getSerializable("history"); 1349 final int size = history.size(); 1350 // Check the index bounds so we don't crash in native code while 1351 // restoring the history index. 1352 if (index < 0 || index >= size) { 1353 return null; 1354 } 1355 for (int i = 0; i < size; i++) { 1356 byte[] data = history.remove(0); 1357 if (data == null) { 1358 // If we somehow have null data, we cannot reconstruct 1359 // the item and thus our history list cannot be rebuilt. 1360 return null; 1361 } 1362 WebHistoryItem item = new WebHistoryItem(data); 1363 list.addHistoryItem(item); 1364 } 1365 // Grab the most recent copy to return to the caller. 1366 returnList = copyBackForwardList(); 1367 // Update the copy to have the correct index. 1368 returnList.setCurrentIndex(index); 1369 } 1370 // Remove all pending messages because we are restoring previous 1371 // state. 1372 mWebViewCore.removeMessages(); 1373 // Send a restore state message. 1374 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1375 } 1376 return returnList; 1377 } 1378 1379 /** 1380 * Load the given url with the extra headers. 1381 * @param url The url of the resource to load. 1382 * @param extraHeaders The extra headers sent with this url. This should not 1383 * include the common headers like "user-agent". If it does, it 1384 * will be replaced by the intrinsic value of the WebView. 1385 */ 1386 public void loadUrl(String url, Map<String, String> extraHeaders) { 1387 switchOutDrawHistory(); 1388 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1389 arg.mUrl = url; 1390 arg.mExtraHeaders = extraHeaders; 1391 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1392 clearTextEntry(false); 1393 } 1394 1395 /** 1396 * Load the given url. 1397 * @param url The url of the resource to load. 1398 */ 1399 public void loadUrl(String url) { 1400 if (url == null) { 1401 return; 1402 } 1403 loadUrl(url, null); 1404 } 1405 1406 /** 1407 * Load the url with postData using "POST" method into the WebView. If url 1408 * is not a network url, it will be loaded with {link 1409 * {@link #loadUrl(String)} instead. 1410 * 1411 * @param url The url of the resource to load. 1412 * @param postData The data will be passed to "POST" request. 1413 */ 1414 public void postUrl(String url, byte[] postData) { 1415 if (URLUtil.isNetworkUrl(url)) { 1416 switchOutDrawHistory(); 1417 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1418 arg.mUrl = url; 1419 arg.mPostData = postData; 1420 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1421 clearTextEntry(false); 1422 } else { 1423 loadUrl(url); 1424 } 1425 } 1426 1427 /** 1428 * Load the given data into the WebView. This will load the data into 1429 * WebView using the data: scheme. Content loaded through this mechanism 1430 * does not have the ability to load content from the network. 1431 * @param data A String of data in the given encoding. 1432 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1433 * @param encoding The encoding of the data. i.e. utf-8, base64 1434 */ 1435 public void loadData(String data, String mimeType, String encoding) { 1436 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1437 } 1438 1439 /** 1440 * Load the given data into the WebView, use the provided URL as the base 1441 * URL for the content. The base URL is the URL that represents the page 1442 * that is loaded through this interface. As such, it is used for the 1443 * history entry and to resolve any relative URLs. The failUrl is used if 1444 * browser fails to load the data provided. If it is empty or null, and the 1445 * load fails, then no history entry is created. 1446 * <p> 1447 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1448 * files through "file:///android_asset/" for the sub resources is more 1449 * restricted. If you provide null or empty string as baseUrl, you won't be 1450 * able to access asset files. If the baseUrl is anything other than 1451 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1452 * sub resources. 1453 * 1454 * @param baseUrl Url to resolve relative paths with, if null defaults to 1455 * "about:blank" 1456 * @param data A String of data in the given encoding. 1457 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1458 * defaults to "text/html" 1459 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1460 * @param failUrl URL to use if the content fails to load or null. 1461 */ 1462 public void loadDataWithBaseURL(String baseUrl, String data, 1463 String mimeType, String encoding, String failUrl) { 1464 1465 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1466 loadData(data, mimeType, encoding); 1467 return; 1468 } 1469 switchOutDrawHistory(); 1470 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1471 arg.mBaseUrl = baseUrl; 1472 arg.mData = data; 1473 arg.mMimeType = mimeType; 1474 arg.mEncoding = encoding; 1475 arg.mFailUrl = failUrl; 1476 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1477 clearTextEntry(false); 1478 } 1479 1480 /** 1481 * Stop the current load. 1482 */ 1483 public void stopLoading() { 1484 // TODO: should we clear all the messages in the queue before sending 1485 // STOP_LOADING? 1486 switchOutDrawHistory(); 1487 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1488 } 1489 1490 /** 1491 * Reload the current url. 1492 */ 1493 public void reload() { 1494 clearTextEntry(false); 1495 switchOutDrawHistory(); 1496 mWebViewCore.sendMessage(EventHub.RELOAD); 1497 } 1498 1499 /** 1500 * Return true if this WebView has a back history item. 1501 * @return True iff this WebView has a back history item. 1502 */ 1503 public boolean canGoBack() { 1504 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1505 synchronized (l) { 1506 if (l.getClearPending()) { 1507 return false; 1508 } else { 1509 return l.getCurrentIndex() > 0; 1510 } 1511 } 1512 } 1513 1514 /** 1515 * Go back in the history of this WebView. 1516 */ 1517 public void goBack() { 1518 goBackOrForward(-1); 1519 } 1520 1521 /** 1522 * Return true if this WebView has a forward history item. 1523 * @return True iff this Webview has a forward history item. 1524 */ 1525 public boolean canGoForward() { 1526 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1527 synchronized (l) { 1528 if (l.getClearPending()) { 1529 return false; 1530 } else { 1531 return l.getCurrentIndex() < l.getSize() - 1; 1532 } 1533 } 1534 } 1535 1536 /** 1537 * Go forward in the history of this WebView. 1538 */ 1539 public void goForward() { 1540 goBackOrForward(1); 1541 } 1542 1543 /** 1544 * Return true if the page can go back or forward the given 1545 * number of steps. 1546 * @param steps The negative or positive number of steps to move the 1547 * history. 1548 */ 1549 public boolean canGoBackOrForward(int steps) { 1550 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1551 synchronized (l) { 1552 if (l.getClearPending()) { 1553 return false; 1554 } else { 1555 int newIndex = l.getCurrentIndex() + steps; 1556 return newIndex >= 0 && newIndex < l.getSize(); 1557 } 1558 } 1559 } 1560 1561 /** 1562 * Go to the history item that is the number of steps away from 1563 * the current item. Steps is negative if backward and positive 1564 * if forward. 1565 * @param steps The number of steps to take back or forward in the back 1566 * forward list. 1567 */ 1568 public void goBackOrForward(int steps) { 1569 goBackOrForward(steps, false); 1570 } 1571 1572 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1573 // every time we go back or forward, we want to reset the 1574 // WebView certificate: 1575 // if the new site is secure, we will reload it and get a 1576 // new certificate set; 1577 // if the new site is not secure, the certificate must be 1578 // null, and that will be the case 1579 mCertificate = null; 1580 if (steps != 0) { 1581 clearTextEntry(false); 1582 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1583 ignoreSnapshot ? 1 : 0); 1584 } 1585 } 1586 1587 private boolean extendScroll(int y) { 1588 int finalY = mScroller.getFinalY(); 1589 int newY = pinLocY(finalY + y); 1590 if (newY == finalY) return false; 1591 mScroller.setFinalY(newY); 1592 mScroller.extendDuration(computeDuration(0, y)); 1593 return true; 1594 } 1595 1596 /** 1597 * Scroll the contents of the view up by half the view size 1598 * @param top true to jump to the top of the page 1599 * @return true if the page was scrolled 1600 */ 1601 public boolean pageUp(boolean top) { 1602 if (mNativeClass == 0) { 1603 return false; 1604 } 1605 nativeClearCursor(); // start next trackball movement from page edge 1606 if (top) { 1607 // go to the top of the document 1608 return pinScrollTo(mScrollX, 0, true, 0); 1609 } 1610 // Page up 1611 int h = getHeight(); 1612 int y; 1613 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1614 y = -h + PAGE_SCROLL_OVERLAP; 1615 } else { 1616 y = -h / 2; 1617 } 1618 mUserScroll = true; 1619 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1620 : extendScroll(y); 1621 } 1622 1623 /** 1624 * Scroll the contents of the view down by half the page size 1625 * @param bottom true to jump to bottom of page 1626 * @return true if the page was scrolled 1627 */ 1628 public boolean pageDown(boolean bottom) { 1629 if (mNativeClass == 0) { 1630 return false; 1631 } 1632 nativeClearCursor(); // start next trackball movement from page edge 1633 if (bottom) { 1634 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1635 } 1636 // Page down. 1637 int h = getHeight(); 1638 int y; 1639 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1640 y = h - PAGE_SCROLL_OVERLAP; 1641 } else { 1642 y = h / 2; 1643 } 1644 mUserScroll = true; 1645 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1646 : extendScroll(y); 1647 } 1648 1649 /** 1650 * Clear the view so that onDraw() will draw nothing but white background, 1651 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1652 */ 1653 public void clearView() { 1654 mContentWidth = 0; 1655 mContentHeight = 0; 1656 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1657 } 1658 1659 /** 1660 * Return a new picture that captures the current display of the webview. 1661 * This is a copy of the display, and will be unaffected if the webview 1662 * later loads a different URL. 1663 * 1664 * @return a picture containing the current contents of the view. Note this 1665 * picture is of the entire document, and is not restricted to the 1666 * bounds of the view. 1667 */ 1668 public Picture capturePicture() { 1669 if (null == mWebViewCore) return null; // check for out of memory tab 1670 return mWebViewCore.copyContentPicture(); 1671 } 1672 1673 /** 1674 * Return true if the browser is displaying a TextView for text input. 1675 */ 1676 private boolean inEditingMode() { 1677 return mWebTextView != null && mWebTextView.getParent() != null 1678 && mWebTextView.hasFocus(); 1679 } 1680 1681 /** 1682 * Remove the WebTextView. 1683 * @param disableFocusController If true, send a message to webkit 1684 * disabling the focus controller, so the caret stops blinking. 1685 */ 1686 private void clearTextEntry(boolean disableFocusController) { 1687 if (inEditingMode()) { 1688 mWebTextView.remove(); 1689 if (disableFocusController) { 1690 setFocusControllerInactive(); 1691 } 1692 } 1693 } 1694 1695 /** 1696 * Return the current scale of the WebView 1697 * @return The current scale. 1698 */ 1699 public float getScale() { 1700 return mActualScale; 1701 } 1702 1703 /** 1704 * Set the initial scale for the WebView. 0 means default. If 1705 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1706 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1707 * WebView starts will this value as initial scale. 1708 * 1709 * @param scaleInPercent The initial scale in percent. 1710 */ 1711 public void setInitialScale(int scaleInPercent) { 1712 mInitialScaleInPercent = scaleInPercent; 1713 } 1714 1715 /** 1716 * Invoke the graphical zoom picker widget for this WebView. This will 1717 * result in the zoom widget appearing on the screen to control the zoom 1718 * level of this WebView. 1719 */ 1720 public void invokeZoomPicker() { 1721 if (!getSettings().supportZoom()) { 1722 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1723 return; 1724 } 1725 clearTextEntry(false); 1726 if (getSettings().getBuiltInZoomControls()) { 1727 mZoomButtonsController.setVisible(true); 1728 } else { 1729 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1730 mPrivateHandler.postDelayed(mZoomControlRunnable, 1731 ZOOM_CONTROLS_TIMEOUT); 1732 } 1733 } 1734 1735 /** 1736 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1737 * is found and the anchor has a non-javascript url, the HitTestResult type 1738 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1739 * anchor does not have a url or if it is a javascript url, the type will 1740 * be UNKNOWN_TYPE and the url has to be retrieved through 1741 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1742 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1743 * the "extra" field. A type of 1744 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1745 * a child node. If a phone number is found, the HitTestResult type is set 1746 * to PHONE_TYPE and the phone number is set in the "extra" field of 1747 * HitTestResult. If a map address is found, the HitTestResult type is set 1748 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1749 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1750 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1751 * HitTestResult type is set to UNKNOWN_TYPE. 1752 */ 1753 public HitTestResult getHitTestResult() { 1754 if (mNativeClass == 0) { 1755 return null; 1756 } 1757 1758 HitTestResult result = new HitTestResult(); 1759 if (nativeHasCursorNode()) { 1760 if (nativeCursorIsTextInput()) { 1761 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1762 } else { 1763 String text = nativeCursorText(); 1764 if (text != null) { 1765 if (text.startsWith(SCHEME_TEL)) { 1766 result.setType(HitTestResult.PHONE_TYPE); 1767 result.setExtra(text.substring(SCHEME_TEL.length())); 1768 } else if (text.startsWith(SCHEME_MAILTO)) { 1769 result.setType(HitTestResult.EMAIL_TYPE); 1770 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1771 } else if (text.startsWith(SCHEME_GEO)) { 1772 result.setType(HitTestResult.GEO_TYPE); 1773 result.setExtra(URLDecoder.decode(text 1774 .substring(SCHEME_GEO.length()))); 1775 } else if (nativeCursorIsAnchor()) { 1776 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1777 result.setExtra(text); 1778 } 1779 } 1780 } 1781 } 1782 int type = result.getType(); 1783 if (type == HitTestResult.UNKNOWN_TYPE 1784 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1785 // Now check to see if it is an image. 1786 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1787 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1788 String text = nativeImageURI(contentX, contentY); 1789 if (text != null) { 1790 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1791 HitTestResult.IMAGE_TYPE : 1792 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1793 result.setExtra(text); 1794 } 1795 } 1796 return result; 1797 } 1798 1799 // Called by JNI when the DOM has changed the focus. Clear the focus so 1800 // that new keys will go to the newly focused field 1801 private void domChangedFocus() { 1802 if (inEditingMode()) { 1803 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 1804 } 1805 } 1806 /** 1807 * Request the href of an anchor element due to getFocusNodePath returning 1808 * "href." If hrefMsg is null, this method returns immediately and does not 1809 * dispatch hrefMsg to its target. 1810 * 1811 * @param hrefMsg This message will be dispatched with the result of the 1812 * request as the data member with "url" as key. The result can 1813 * be null. 1814 */ 1815 // FIXME: API change required to change the name of this function. We now 1816 // look at the cursor node, and not the focus node. Also, what is 1817 // getFocusNodePath? 1818 public void requestFocusNodeHref(Message hrefMsg) { 1819 if (hrefMsg == null || mNativeClass == 0) { 1820 return; 1821 } 1822 if (nativeCursorIsAnchor()) { 1823 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1824 nativeCursorFramePointer(), nativeCursorNodePointer(), 1825 hrefMsg); 1826 } 1827 } 1828 1829 /** 1830 * Request the url of the image last touched by the user. msg will be sent 1831 * to its target with a String representing the url as its object. 1832 * 1833 * @param msg This message will be dispatched with the result of the request 1834 * as the data member with "url" as key. The result can be null. 1835 */ 1836 public void requestImageRef(Message msg) { 1837 if (0 == mNativeClass) return; // client isn't initialized 1838 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1839 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1840 String ref = nativeImageURI(contentX, contentY); 1841 Bundle data = msg.getData(); 1842 data.putString("url", ref); 1843 msg.setData(data); 1844 msg.sendToTarget(); 1845 } 1846 1847 private static int pinLoc(int x, int viewMax, int docMax) { 1848// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1849 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1850 // pin the short document to the top/left of the screen 1851 x = 0; 1852// Log.d(LOGTAG, "--- center " + x); 1853 } else if (x < 0) { 1854 x = 0; 1855// Log.d(LOGTAG, "--- zero"); 1856 } else if (x + viewMax > docMax) { 1857 x = docMax - viewMax; 1858// Log.d(LOGTAG, "--- pin " + x); 1859 } 1860 return x; 1861 } 1862 1863 // Expects x in view coordinates 1864 private int pinLocX(int x) { 1865 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1866 } 1867 1868 // Expects y in view coordinates 1869 private int pinLocY(int y) { 1870 int titleH = getTitleHeight(); 1871 // if the titlebar is still visible, just pin against 0 1872 if (y <= titleH) { 1873 return Math.max(y, 0); 1874 } 1875 // convert to 0-based coordinate (subtract the title height) 1876 // pin(), and then add the title height back in 1877 return pinLoc(y - titleH, getViewHeight(), 1878 computeVerticalScrollRange()) + titleH; 1879 } 1880 1881 /** 1882 * A title bar which is embedded in this WebView, and scrolls along with it 1883 * vertically, but not horizontally. 1884 */ 1885 private View mTitleBar; 1886 1887 /** 1888 * Since we draw the title bar ourselves, we removed the shadow from the 1889 * browser's activity. We do want a shadow at the bottom of the title bar, 1890 * or at the top of the screen if the title bar is not visible. This 1891 * drawable serves that purpose. 1892 */ 1893 private Drawable mTitleShadow; 1894 1895 /** 1896 * Add or remove a title bar to be embedded into the WebView, and scroll 1897 * along with it vertically, while remaining in view horizontally. Pass 1898 * null to remove the title bar from the WebView, and return to drawing 1899 * the WebView normally without translating to account for the title bar. 1900 * @hide 1901 */ 1902 public void setEmbeddedTitleBar(View v) { 1903 if (mTitleBar == v) return; 1904 if (mTitleBar != null) { 1905 removeView(mTitleBar); 1906 } 1907 if (null != v) { 1908 addView(v, new AbsoluteLayout.LayoutParams( 1909 ViewGroup.LayoutParams.MATCH_PARENT, 1910 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1911 if (mTitleShadow == null) { 1912 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1913 com.android.internal.R.drawable.title_bar_shadow); 1914 } 1915 } 1916 mTitleBar = v; 1917 } 1918 1919 /** 1920 * Given a distance in view space, convert it to content space. Note: this 1921 * does not reflect translation, just scaling, so this should not be called 1922 * with coordinates, but should be called for dimensions like width or 1923 * height. 1924 */ 1925 private int viewToContentDimension(int d) { 1926 return Math.round(d * mInvActualScale); 1927 } 1928 1929 /** 1930 * Given an x coordinate in view space, convert it to content space. Also 1931 * may be used for absolute heights (such as for the WebTextView's 1932 * textSize, which is unaffected by the height of the title bar). 1933 */ 1934 /*package*/ int viewToContentX(int x) { 1935 return viewToContentDimension(x); 1936 } 1937 1938 /** 1939 * Given a y coordinate in view space, convert it to content space. 1940 * Takes into account the height of the title bar if there is one 1941 * embedded into the WebView. 1942 */ 1943 /*package*/ int viewToContentY(int y) { 1944 return viewToContentDimension(y - getTitleHeight()); 1945 } 1946 1947 /** 1948 * Given a distance in content space, convert it to view space. Note: this 1949 * does not reflect translation, just scaling, so this should not be called 1950 * with coordinates, but should be called for dimensions like width or 1951 * height. 1952 */ 1953 /*package*/ int contentToViewDimension(int d) { 1954 return Math.round(d * mActualScale); 1955 } 1956 1957 /** 1958 * Given an x coordinate in content space, convert it to view 1959 * space. 1960 */ 1961 /*package*/ int contentToViewX(int x) { 1962 return contentToViewDimension(x); 1963 } 1964 1965 /** 1966 * Given a y coordinate in content space, convert it to view 1967 * space. Takes into account the height of the title bar. 1968 */ 1969 /*package*/ int contentToViewY(int y) { 1970 return contentToViewDimension(y) + getTitleHeight(); 1971 } 1972 1973 private Rect contentToViewRect(Rect x) { 1974 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 1975 contentToViewX(x.right), contentToViewY(x.bottom)); 1976 } 1977 1978 /* To invalidate a rectangle in content coordinates, we need to transform 1979 the rect into view coordinates, so we can then call invalidate(...). 1980 1981 Normally, we would just call contentToView[XY](...), which eventually 1982 calls Math.round(coordinate * mActualScale). However, for invalidates, 1983 we need to account for the slop that occurs with antialiasing. To 1984 address that, we are a little more liberal in the size of the rect that 1985 we invalidate. 1986 1987 This liberal calculation calls floor() for the top/left, and ceil() for 1988 the bottom/right coordinates. This catches the possible extra pixels of 1989 antialiasing that we might have missed with just round(). 1990 */ 1991 1992 // Called by JNI to invalidate the View, given rectangle coordinates in 1993 // content space 1994 private void viewInvalidate(int l, int t, int r, int b) { 1995 final float scale = mActualScale; 1996 final int dy = getTitleHeight(); 1997 invalidate((int)Math.floor(l * scale), 1998 (int)Math.floor(t * scale) + dy, 1999 (int)Math.ceil(r * scale), 2000 (int)Math.ceil(b * scale) + dy); 2001 } 2002 2003 // Called by JNI to invalidate the View after a delay, given rectangle 2004 // coordinates in content space 2005 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2006 final float scale = mActualScale; 2007 final int dy = getTitleHeight(); 2008 postInvalidateDelayed(delay, 2009 (int)Math.floor(l * scale), 2010 (int)Math.floor(t * scale) + dy, 2011 (int)Math.ceil(r * scale), 2012 (int)Math.ceil(b * scale) + dy); 2013 } 2014 2015 private void invalidateContentRect(Rect r) { 2016 viewInvalidate(r.left, r.top, r.right, r.bottom); 2017 } 2018 2019 // stop the scroll animation, and don't let a subsequent fling add 2020 // to the existing velocity 2021 private void abortAnimation() { 2022 mScroller.abortAnimation(); 2023 mLastVelocity = 0; 2024 } 2025 2026 /* call from webcoreview.draw(), so we're still executing in the UI thread 2027 */ 2028 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2029 2030 // premature data from webkit, ignore 2031 if ((w | h) == 0) { 2032 return; 2033 } 2034 2035 // don't abort a scroll animation if we didn't change anything 2036 if (mContentWidth != w || mContentHeight != h) { 2037 // record new dimensions 2038 mContentWidth = w; 2039 mContentHeight = h; 2040 // If history Picture is drawn, don't update scroll. They will be 2041 // updated when we get out of that mode. 2042 if (!mDrawHistory) { 2043 // repin our scroll, taking into account the new content size 2044 int oldX = mScrollX; 2045 int oldY = mScrollY; 2046 mScrollX = pinLocX(mScrollX); 2047 mScrollY = pinLocY(mScrollY); 2048 if (oldX != mScrollX || oldY != mScrollY) { 2049 sendOurVisibleRect(); 2050 } 2051 if (!mScroller.isFinished()) { 2052 // We are in the middle of a scroll. Repin the final scroll 2053 // position. 2054 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2055 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2056 } 2057 } 2058 } 2059 contentSizeChanged(updateLayout); 2060 } 2061 2062 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 2063 boolean force) { 2064 if (scale < mMinZoomScale) { 2065 scale = mMinZoomScale; 2066 } else if (scale > mMaxZoomScale) { 2067 scale = mMaxZoomScale; 2068 } 2069 if (updateTextWrapScale) { 2070 mTextWrapScale = scale; 2071 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 2072 mLastHeightSent = 0; 2073 } 2074 if (scale != mActualScale || force) { 2075 if (mDrawHistory) { 2076 // If history Picture is drawn, don't update scroll. They will 2077 // be updated when we get out of that mode. 2078 if (scale != mActualScale && !mPreviewZoomOnly) { 2079 mCallbackProxy.onScaleChanged(mActualScale, scale); 2080 } 2081 mActualScale = scale; 2082 mInvActualScale = 1 / scale; 2083 sendViewSizeZoom(); 2084 } else { 2085 // update our scroll so we don't appear to jump 2086 // i.e. keep the center of the doc in the center of the view 2087 2088 int oldX = mScrollX; 2089 int oldY = mScrollY; 2090 float ratio = scale * mInvActualScale; // old inverse 2091 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2092 float sy = ratio * oldY + (ratio - 1) 2093 * (mZoomCenterY - getTitleHeight()); 2094 2095 // now update our new scale and inverse 2096 if (scale != mActualScale && !mPreviewZoomOnly) { 2097 mCallbackProxy.onScaleChanged(mActualScale, scale); 2098 } 2099 mActualScale = scale; 2100 mInvActualScale = 1 / scale; 2101 2102 // Scale all the child views 2103 mViewManager.scaleAll(); 2104 2105 // as we don't have animation for scaling, don't do animation 2106 // for scrolling, as it causes weird intermediate state 2107 // pinScrollTo(Math.round(sx), Math.round(sy)); 2108 mScrollX = pinLocX(Math.round(sx)); 2109 mScrollY = pinLocY(Math.round(sy)); 2110 2111 // update webkit 2112 sendViewSizeZoom(); 2113 sendOurVisibleRect(); 2114 } 2115 } 2116 } 2117 2118 // Used to avoid sending many visible rect messages. 2119 private Rect mLastVisibleRectSent; 2120 private Rect mLastGlobalRect; 2121 2122 private Rect sendOurVisibleRect() { 2123 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2124 2125 Rect rect = new Rect(); 2126 calcOurContentVisibleRect(rect); 2127 // Rect.equals() checks for null input. 2128 if (!rect.equals(mLastVisibleRectSent)) { 2129 Point pos = new Point(rect.left, rect.top); 2130 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2131 nativeMoveGeneration(), 0, pos); 2132 mLastVisibleRectSent = rect; 2133 } 2134 Rect globalRect = new Rect(); 2135 if (getGlobalVisibleRect(globalRect) 2136 && !globalRect.equals(mLastGlobalRect)) { 2137 if (DebugFlags.WEB_VIEW) { 2138 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2139 + globalRect.top + ",r=" + globalRect.right + ",b=" 2140 + globalRect.bottom); 2141 } 2142 // TODO: the global offset is only used by windowRect() 2143 // in ChromeClientAndroid ; other clients such as touch 2144 // and mouse events could return view + screen relative points. 2145 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2146 mLastGlobalRect = globalRect; 2147 } 2148 return rect; 2149 } 2150 2151 // Sets r to be the visible rectangle of our webview in view coordinates 2152 private void calcOurVisibleRect(Rect r) { 2153 Point p = new Point(); 2154 getGlobalVisibleRect(r, p); 2155 r.offset(-p.x, -p.y); 2156 if (mFindIsUp) { 2157 r.bottom -= mFindHeight; 2158 } 2159 } 2160 2161 // Sets r to be our visible rectangle in content coordinates 2162 private void calcOurContentVisibleRect(Rect r) { 2163 calcOurVisibleRect(r); 2164 r.left = viewToContentX(r.left); 2165 // viewToContentY will remove the total height of the title bar. Add 2166 // the visible height back in to account for the fact that if the title 2167 // bar is partially visible, the part of the visible rect which is 2168 // displaying our content is displaced by that amount. 2169 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2170 r.right = viewToContentX(r.right); 2171 r.bottom = viewToContentY(r.bottom); 2172 } 2173 2174 static class ViewSizeData { 2175 int mWidth; 2176 int mHeight; 2177 int mTextWrapWidth; 2178 int mAnchorX; 2179 int mAnchorY; 2180 float mScale; 2181 boolean mIgnoreHeight; 2182 } 2183 2184 /** 2185 * Compute unzoomed width and height, and if they differ from the last 2186 * values we sent, send them to webkit (to be used has new viewport) 2187 * 2188 * @return true if new values were sent 2189 */ 2190 private boolean sendViewSizeZoom() { 2191 if (mPreviewZoomOnly) return false; 2192 2193 int viewWidth = getViewWidth(); 2194 int newWidth = Math.round(viewWidth * mInvActualScale); 2195 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2196 /* 2197 * Because the native side may have already done a layout before the 2198 * View system was able to measure us, we have to send a height of 0 to 2199 * remove excess whitespace when we grow our width. This will trigger a 2200 * layout and a change in content size. This content size change will 2201 * mean that contentSizeChanged will either call this method directly or 2202 * indirectly from onSizeChanged. 2203 */ 2204 if (newWidth > mLastWidthSent && mWrapContent) { 2205 newHeight = 0; 2206 } 2207 // Avoid sending another message if the dimensions have not changed. 2208 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2209 ViewSizeData data = new ViewSizeData(); 2210 data.mWidth = newWidth; 2211 data.mHeight = newHeight; 2212 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2213 data.mScale = mActualScale; 2214 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2215 data.mAnchorX = mAnchorX; 2216 data.mAnchorY = mAnchorY; 2217 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2218 mLastWidthSent = newWidth; 2219 mLastHeightSent = newHeight; 2220 mAnchorX = mAnchorY = 0; 2221 return true; 2222 } 2223 return false; 2224 } 2225 2226 @Override 2227 protected int computeHorizontalScrollRange() { 2228 if (mDrawHistory) { 2229 return mHistoryWidth; 2230 } else { 2231 // to avoid rounding error caused unnecessary scrollbar, use floor 2232 return (int) Math.floor(mContentWidth * mActualScale); 2233 } 2234 } 2235 2236 @Override 2237 protected int computeVerticalScrollRange() { 2238 if (mDrawHistory) { 2239 return mHistoryHeight; 2240 } else { 2241 // to avoid rounding error caused unnecessary scrollbar, use floor 2242 return (int) Math.floor(mContentHeight * mActualScale); 2243 } 2244 } 2245 2246 @Override 2247 protected int computeVerticalScrollOffset() { 2248 return Math.max(mScrollY - getTitleHeight(), 0); 2249 } 2250 2251 @Override 2252 protected int computeVerticalScrollExtent() { 2253 return getViewHeight(); 2254 } 2255 2256 /** @hide */ 2257 @Override 2258 protected void onDrawVerticalScrollBar(Canvas canvas, 2259 Drawable scrollBar, 2260 int l, int t, int r, int b) { 2261 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2262 scrollBar.draw(canvas); 2263 } 2264 2265 /** 2266 * Get the url for the current page. This is not always the same as the url 2267 * passed to WebViewClient.onPageStarted because although the load for 2268 * that url has begun, the current page may not have changed. 2269 * @return The url for the current page. 2270 */ 2271 public String getUrl() { 2272 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2273 return h != null ? h.getUrl() : null; 2274 } 2275 2276 /** 2277 * Get the original url for the current page. This is not always the same 2278 * as the url passed to WebViewClient.onPageStarted because although the 2279 * load for that url has begun, the current page may not have changed. 2280 * Also, there may have been redirects resulting in a different url to that 2281 * originally requested. 2282 * @return The url that was originally requested for the current page. 2283 */ 2284 public String getOriginalUrl() { 2285 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2286 return h != null ? h.getOriginalUrl() : null; 2287 } 2288 2289 /** 2290 * Get the title for the current page. This is the title of the current page 2291 * until WebViewClient.onReceivedTitle is called. 2292 * @return The title for the current page. 2293 */ 2294 public String getTitle() { 2295 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2296 return h != null ? h.getTitle() : null; 2297 } 2298 2299 /** 2300 * Get the favicon for the current page. This is the favicon of the current 2301 * page until WebViewClient.onReceivedIcon is called. 2302 * @return The favicon for the current page. 2303 */ 2304 public Bitmap getFavicon() { 2305 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2306 return h != null ? h.getFavicon() : null; 2307 } 2308 2309 /** 2310 * Get the touch icon url for the apple-touch-icon <link> element. 2311 * @hide 2312 */ 2313 public String getTouchIconUrl() { 2314 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2315 return h != null ? h.getTouchIconUrl() : null; 2316 } 2317 2318 /** 2319 * Get the progress for the current page. 2320 * @return The progress for the current page between 0 and 100. 2321 */ 2322 public int getProgress() { 2323 return mCallbackProxy.getProgress(); 2324 } 2325 2326 /** 2327 * @return the height of the HTML content. 2328 */ 2329 public int getContentHeight() { 2330 return mContentHeight; 2331 } 2332 2333 /** 2334 * @return the width of the HTML content. 2335 * @hide 2336 */ 2337 public int getContentWidth() { 2338 return mContentWidth; 2339 } 2340 2341 /** 2342 * Pause all layout, parsing, and javascript timers for all webviews. This 2343 * is a global requests, not restricted to just this webview. This can be 2344 * useful if the application has been paused. 2345 */ 2346 public void pauseTimers() { 2347 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2348 } 2349 2350 /** 2351 * Resume all layout, parsing, and javascript timers for all webviews. 2352 * This will resume dispatching all timers. 2353 */ 2354 public void resumeTimers() { 2355 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2356 } 2357 2358 /** 2359 * Call this to pause any extra processing associated with this view and 2360 * its associated DOM/plugins/javascript/etc. For example, if the view is 2361 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2362 * network traffic. When the view is again "active", call onResume(). 2363 * 2364 * Note that this differs from pauseTimers(), which affects all views/DOMs 2365 * @hide 2366 */ 2367 public void onPause() { 2368 if (!mIsPaused) { 2369 mIsPaused = true; 2370 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2371 } 2372 } 2373 2374 /** 2375 * Call this to balanace a previous call to onPause() 2376 * @hide 2377 */ 2378 public void onResume() { 2379 if (mIsPaused) { 2380 mIsPaused = false; 2381 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2382 } 2383 } 2384 2385 /** 2386 * Returns true if the view is paused, meaning onPause() was called. Calling 2387 * onResume() sets the paused state back to false. 2388 * @hide 2389 */ 2390 public boolean isPaused() { 2391 return mIsPaused; 2392 } 2393 2394 /** 2395 * Call this to inform the view that memory is low so that it can 2396 * free any available memory. 2397 */ 2398 public void freeMemory() { 2399 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2400 } 2401 2402 /** 2403 * Clear the resource cache. Note that the cache is per-application, so 2404 * this will clear the cache for all WebViews used. 2405 * 2406 * @param includeDiskFiles If false, only the RAM cache is cleared. 2407 */ 2408 public void clearCache(boolean includeDiskFiles) { 2409 // Note: this really needs to be a static method as it clears cache for all 2410 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2411 // we can't make this static. 2412 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2413 includeDiskFiles ? 1 : 0, 0); 2414 } 2415 2416 /** 2417 * Make sure that clearing the form data removes the adapter from the 2418 * currently focused textfield if there is one. 2419 */ 2420 public void clearFormData() { 2421 if (inEditingMode()) { 2422 AutoCompleteAdapter adapter = null; 2423 mWebTextView.setAdapterCustom(adapter); 2424 } 2425 } 2426 2427 /** 2428 * Tell the WebView to clear its internal back/forward list. 2429 */ 2430 public void clearHistory() { 2431 mCallbackProxy.getBackForwardList().setClearPending(); 2432 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2433 } 2434 2435 /** 2436 * Clear the SSL preferences table stored in response to proceeding with SSL 2437 * certificate errors. 2438 */ 2439 public void clearSslPreferences() { 2440 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2441 } 2442 2443 /** 2444 * Return the WebBackForwardList for this WebView. This contains the 2445 * back/forward list for use in querying each item in the history stack. 2446 * This is a copy of the private WebBackForwardList so it contains only a 2447 * snapshot of the current state. Multiple calls to this method may return 2448 * different objects. The object returned from this method will not be 2449 * updated to reflect any new state. 2450 */ 2451 public WebBackForwardList copyBackForwardList() { 2452 return mCallbackProxy.getBackForwardList().clone(); 2453 } 2454 2455 /* 2456 * Highlight and scroll to the next occurance of String in findAll. 2457 * Wraps the page infinitely, and scrolls. Must be called after 2458 * calling findAll. 2459 * 2460 * @param forward Direction to search. 2461 */ 2462 public void findNext(boolean forward) { 2463 if (0 == mNativeClass) return; // client isn't initialized 2464 nativeFindNext(forward); 2465 } 2466 2467 /* 2468 * Find all instances of find on the page and highlight them. 2469 * @param find String to find. 2470 * @return int The number of occurances of the String "find" 2471 * that were found. 2472 */ 2473 public int findAll(String find) { 2474 if (0 == mNativeClass) return 0; // client isn't initialized 2475 if (mFindIsUp == false) { 2476 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2477 false); 2478 mFindIsUp = true; 2479 } 2480 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2481 invalidate(); 2482 mLastFind = find; 2483 return result; 2484 } 2485 2486 // Used to know whether the find dialog is open. Affects whether 2487 // or not we draw the highlights for matches. 2488 private boolean mFindIsUp; 2489 private int mFindHeight; 2490 // Keep track of the last string sent, so we can search again after an 2491 // orientation change or the dismissal of the soft keyboard. 2492 private String mLastFind; 2493 2494 /** 2495 * Return the first substring consisting of the address of a physical 2496 * location. Currently, only addresses in the United States are detected, 2497 * and consist of: 2498 * - a house number 2499 * - a street name 2500 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2501 * - a city name 2502 * - a state or territory, either spelled out or two-letter abbr. 2503 * - an optional 5 digit or 9 digit zip code. 2504 * 2505 * All names must be correctly capitalized, and the zip code, if present, 2506 * must be valid for the state. The street type must be a standard USPS 2507 * spelling or abbreviation. The state or territory must also be spelled 2508 * or abbreviated using USPS standards. The house number may not exceed 2509 * five digits. 2510 * @param addr The string to search for addresses. 2511 * 2512 * @return the address, or if no address is found, return null. 2513 */ 2514 public static String findAddress(String addr) { 2515 return findAddress(addr, false); 2516 } 2517 2518 /** 2519 * @hide 2520 * Return the first substring consisting of the address of a physical 2521 * location. Currently, only addresses in the United States are detected, 2522 * and consist of: 2523 * - a house number 2524 * - a street name 2525 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2526 * - a city name 2527 * - a state or territory, either spelled out or two-letter abbr. 2528 * - an optional 5 digit or 9 digit zip code. 2529 * 2530 * Names are optionally capitalized, and the zip code, if present, 2531 * must be valid for the state. The street type must be a standard USPS 2532 * spelling or abbreviation. The state or territory must also be spelled 2533 * or abbreviated using USPS standards. The house number may not exceed 2534 * five digits. 2535 * @param addr The string to search for addresses. 2536 * @param caseInsensitive addr Set to true to make search ignore case. 2537 * 2538 * @return the address, or if no address is found, return null. 2539 */ 2540 public static String findAddress(String addr, boolean caseInsensitive) { 2541 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2542 } 2543 2544 /* 2545 * Clear the highlighting surrounding text matches created by findAll. 2546 */ 2547 public void clearMatches() { 2548 if (mNativeClass == 0) 2549 return; 2550 if (mFindIsUp) { 2551 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2552 false); 2553 mFindIsUp = false; 2554 } 2555 nativeSetFindIsUp(); 2556 // Now that the dialog has been removed, ensure that we scroll to a 2557 // location that is not beyond the end of the page. 2558 pinScrollTo(mScrollX, mScrollY, false, 0); 2559 invalidate(); 2560 } 2561 2562 /** 2563 * @hide 2564 */ 2565 public void setFindDialogHeight(int height) { 2566 if (DebugFlags.WEB_VIEW) { 2567 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2568 } 2569 mFindHeight = height; 2570 } 2571 2572 /** 2573 * Query the document to see if it contains any image references. The 2574 * message object will be dispatched with arg1 being set to 1 if images 2575 * were found and 0 if the document does not reference any images. 2576 * @param response The message that will be dispatched with the result. 2577 */ 2578 public void documentHasImages(Message response) { 2579 if (response == null) { 2580 return; 2581 } 2582 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2583 } 2584 2585 @Override 2586 public void computeScroll() { 2587 if (mScroller.computeScrollOffset()) { 2588 int oldX = mScrollX; 2589 int oldY = mScrollY; 2590 mScrollX = mScroller.getCurrX(); 2591 mScrollY = mScroller.getCurrY(); 2592 postInvalidate(); // So we draw again 2593 if (oldX != mScrollX || oldY != mScrollY) { 2594 // as onScrollChanged() is not called, sendOurVisibleRect() 2595 // needs to be call explicitly 2596 sendOurVisibleRect(); 2597 } 2598 } else { 2599 super.computeScroll(); 2600 } 2601 } 2602 2603 private static int computeDuration(int dx, int dy) { 2604 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2605 int duration = distance * 1000 / STD_SPEED; 2606 return Math.min(duration, MAX_DURATION); 2607 } 2608 2609 // helper to pin the scrollBy parameters (already in view coordinates) 2610 // returns true if the scroll was changed 2611 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2612 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2613 } 2614 // helper to pin the scrollTo parameters (already in view coordinates) 2615 // returns true if the scroll was changed 2616 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2617 x = pinLocX(x); 2618 y = pinLocY(y); 2619 int dx = x - mScrollX; 2620 int dy = y - mScrollY; 2621 2622 if ((dx | dy) == 0) { 2623 return false; 2624 } 2625 if (animate) { 2626 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2627 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2628 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2629 awakenScrollBars(mScroller.getDuration()); 2630 invalidate(); 2631 } else { 2632 abortAnimation(); // just in case 2633 scrollTo(x, y); 2634 } 2635 return true; 2636 } 2637 2638 // Scale from content to view coordinates, and pin. 2639 // Also called by jni webview.cpp 2640 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2641 if (mDrawHistory) { 2642 // disallow WebView to change the scroll position as History Picture 2643 // is used in the view system. 2644 // TODO: as we switchOutDrawHistory when trackball or navigation 2645 // keys are hit, this should be safe. Right? 2646 return false; 2647 } 2648 cx = contentToViewDimension(cx); 2649 cy = contentToViewDimension(cy); 2650 if (mHeightCanMeasure) { 2651 // move our visible rect according to scroll request 2652 if (cy != 0) { 2653 Rect tempRect = new Rect(); 2654 calcOurVisibleRect(tempRect); 2655 tempRect.offset(cx, cy); 2656 requestRectangleOnScreen(tempRect); 2657 } 2658 // FIXME: We scroll horizontally no matter what because currently 2659 // ScrollView and ListView will not scroll horizontally. 2660 // FIXME: Why do we only scroll horizontally if there is no 2661 // vertical scroll? 2662// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2663 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2664 } else { 2665 return pinScrollBy(cx, cy, animate, 0); 2666 } 2667 } 2668 2669 /** 2670 * Called by CallbackProxy when the page finishes loading. 2671 * @param url The URL of the page which has finished loading. 2672 */ 2673 /* package */ void onPageFinished(String url) { 2674 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 2675 // If the user is now on a different page, or has scrolled the page 2676 // past the point where the title bar is offscreen, ignore the 2677 // scroll request. 2678 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 2679 && mScrollX == 0 && mScrollY == 0) { 2680 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 2681 SLIDE_TITLE_DURATION); 2682 } 2683 mPageThatNeedsToSlideTitleBarOffScreen = null; 2684 } 2685 } 2686 2687 /** 2688 * The URL of a page that sent a message to scroll the title bar off screen. 2689 * 2690 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 2691 * title bar off the screen. Sometimes, the scroll position is set before 2692 * the page finishes loading. Rather than scrolling while the page is still 2693 * loading, keep track of the URL and new scroll position so we can perform 2694 * the scroll once the page finishes loading. 2695 */ 2696 private String mPageThatNeedsToSlideTitleBarOffScreen; 2697 2698 /** 2699 * The destination Y scroll position to be used when the page finishes 2700 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 2701 */ 2702 private int mYDistanceToSlideTitleOffScreen; 2703 2704 // scale from content to view coordinates, and pin 2705 // return true if pin caused the final x/y different than the request cx/cy, 2706 // and a future scroll may reach the request cx/cy after our size has 2707 // changed 2708 // return false if the view scroll to the exact position as it is requested, 2709 // where negative numbers are taken to mean 0 2710 private boolean setContentScrollTo(int cx, int cy) { 2711 if (mDrawHistory) { 2712 // disallow WebView to change the scroll position as History Picture 2713 // is used in the view system. 2714 // One known case where this is called is that WebCore tries to 2715 // restore the scroll position. As history Picture already uses the 2716 // saved scroll position, it is ok to skip this. 2717 return false; 2718 } 2719 int vx; 2720 int vy; 2721 if ((cx | cy) == 0) { 2722 // If the page is being scrolled to (0,0), do not add in the title 2723 // bar's height, and simply scroll to (0,0). (The only other work 2724 // in contentToView_ is to multiply, so this would not change 0.) 2725 vx = 0; 2726 vy = 0; 2727 } else { 2728 vx = contentToViewX(cx); 2729 vy = contentToViewY(cy); 2730 } 2731// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2732// vx + " " + vy + "]"); 2733 // Some mobile sites attempt to scroll the title bar off the page by 2734 // scrolling to (0,1). If we are at the top left corner of the 2735 // page, assume this is an attempt to scroll off the title bar, and 2736 // animate the title bar off screen slowly enough that the user can see 2737 // it. 2738 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 2739 && mTitleBar != null) { 2740 // FIXME: 100 should be defined somewhere as our max progress. 2741 if (getProgress() < 100) { 2742 // Wait to scroll the title bar off screen until the page has 2743 // finished loading. Keep track of the URL and the destination 2744 // Y position 2745 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 2746 mYDistanceToSlideTitleOffScreen = vy; 2747 } else { 2748 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2749 } 2750 // Since we are animating, we have not yet reached the desired 2751 // scroll position. Do not return true to request another attempt 2752 return false; 2753 } 2754 pinScrollTo(vx, vy, false, 0); 2755 // If the request was to scroll to a negative coordinate, treat it as if 2756 // it was a request to scroll to 0 2757 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2758 return true; 2759 } else { 2760 return false; 2761 } 2762 } 2763 2764 // scale from content to view coordinates, and pin 2765 private void spawnContentScrollTo(int cx, int cy) { 2766 if (mDrawHistory) { 2767 // disallow WebView to change the scroll position as History Picture 2768 // is used in the view system. 2769 return; 2770 } 2771 int vx = contentToViewX(cx); 2772 int vy = contentToViewY(cy); 2773 pinScrollTo(vx, vy, true, 0); 2774 } 2775 2776 /** 2777 * These are from webkit, and are in content coordinate system (unzoomed) 2778 */ 2779 private void contentSizeChanged(boolean updateLayout) { 2780 // suppress 0,0 since we usually see real dimensions soon after 2781 // this avoids drawing the prev content in a funny place. If we find a 2782 // way to consolidate these notifications, this check may become 2783 // obsolete 2784 if ((mContentWidth | mContentHeight) == 0) { 2785 return; 2786 } 2787 2788 if (mHeightCanMeasure) { 2789 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2790 || updateLayout) { 2791 requestLayout(); 2792 } 2793 } else if (mWidthCanMeasure) { 2794 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2795 || updateLayout) { 2796 requestLayout(); 2797 } 2798 } else { 2799 // If we don't request a layout, try to send our view size to the 2800 // native side to ensure that WebCore has the correct dimensions. 2801 sendViewSizeZoom(); 2802 } 2803 } 2804 2805 /** 2806 * Set the WebViewClient that will receive various notifications and 2807 * requests. This will replace the current handler. 2808 * @param client An implementation of WebViewClient. 2809 */ 2810 public void setWebViewClient(WebViewClient client) { 2811 mCallbackProxy.setWebViewClient(client); 2812 } 2813 2814 /** 2815 * Gets the WebViewClient 2816 * @return the current WebViewClient instance. 2817 * 2818 *@hide pending API council approval. 2819 */ 2820 public WebViewClient getWebViewClient() { 2821 return mCallbackProxy.getWebViewClient(); 2822 } 2823 2824 /** 2825 * Register the interface to be used when content can not be handled by 2826 * the rendering engine, and should be downloaded instead. This will replace 2827 * the current handler. 2828 * @param listener An implementation of DownloadListener. 2829 */ 2830 public void setDownloadListener(DownloadListener listener) { 2831 mCallbackProxy.setDownloadListener(listener); 2832 } 2833 2834 /** 2835 * Set the chrome handler. This is an implementation of WebChromeClient for 2836 * use in handling Javascript dialogs, favicons, titles, and the progress. 2837 * This will replace the current handler. 2838 * @param client An implementation of WebChromeClient. 2839 */ 2840 public void setWebChromeClient(WebChromeClient client) { 2841 mCallbackProxy.setWebChromeClient(client); 2842 } 2843 2844 /** 2845 * Gets the chrome handler. 2846 * @return the current WebChromeClient instance. 2847 * 2848 * @hide API council approval. 2849 */ 2850 public WebChromeClient getWebChromeClient() { 2851 return mCallbackProxy.getWebChromeClient(); 2852 } 2853 2854 /** 2855 * Set the Picture listener. This is an interface used to receive 2856 * notifications of a new Picture. 2857 * @param listener An implementation of WebView.PictureListener. 2858 */ 2859 public void setPictureListener(PictureListener listener) { 2860 mPictureListener = listener; 2861 } 2862 2863 /** 2864 * {@hide} 2865 */ 2866 /* FIXME: Debug only! Remove for SDK! */ 2867 public void externalRepresentation(Message callback) { 2868 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2869 } 2870 2871 /** 2872 * {@hide} 2873 */ 2874 /* FIXME: Debug only! Remove for SDK! */ 2875 public void documentAsText(Message callback) { 2876 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2877 } 2878 2879 /** 2880 * Use this function to bind an object to Javascript so that the 2881 * methods can be accessed from Javascript. 2882 * <p><strong>IMPORTANT:</strong> 2883 * <ul> 2884 * <li> Using addJavascriptInterface() allows JavaScript to control your 2885 * application. This can be a very useful feature or a dangerous security 2886 * issue. When the HTML in the WebView is untrustworthy (for example, part 2887 * or all of the HTML is provided by some person or process), then an 2888 * attacker could inject HTML that will execute your code and possibly any 2889 * code of the attacker's choosing.<br> 2890 * Do not use addJavascriptInterface() unless all of the HTML in this 2891 * WebView was written by you.</li> 2892 * <li> The Java object that is bound runs in another thread and not in 2893 * the thread that it was constructed in.</li> 2894 * </ul></p> 2895 * @param obj The class instance to bind to Javascript 2896 * @param interfaceName The name to used to expose the class in Javascript 2897 */ 2898 public void addJavascriptInterface(Object obj, String interfaceName) { 2899 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2900 arg.mObject = obj; 2901 arg.mInterfaceName = interfaceName; 2902 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2903 } 2904 2905 /** 2906 * Return the WebSettings object used to control the settings for this 2907 * WebView. 2908 * @return A WebSettings object that can be used to control this WebView's 2909 * settings. 2910 */ 2911 public WebSettings getSettings() { 2912 return mWebViewCore.getSettings(); 2913 } 2914 2915 /** 2916 * Use this method to inform the webview about packages that are installed 2917 * in the system. This information will be used by the 2918 * navigator.isApplicationInstalled() API. 2919 * @param packageNames is a set of package names that are known to be 2920 * installed in the system. 2921 * 2922 * @hide not a public API 2923 */ 2924 public void addPackageNames(Set<String> packageNames) { 2925 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, packageNames); 2926 } 2927 2928 /** 2929 * Use this method to inform the webview about single packages that are 2930 * installed in the system. This information will be used by the 2931 * navigator.isApplicationInstalled() API. 2932 * @param packageName is the name of a package that is known to be 2933 * installed in the system. 2934 * 2935 * @hide not a public API 2936 */ 2937 public void addPackageName(String packageName) { 2938 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 2939 } 2940 2941 /** 2942 * Use this method to inform the webview about packages that are uninstalled 2943 * in the system. This information will be used by the 2944 * navigator.isApplicationInstalled() API. 2945 * @param packageName is the name of a package that has been uninstalled in 2946 * the system. 2947 * 2948 * @hide not a public API 2949 */ 2950 public void removePackageName(String packageName) { 2951 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 2952 } 2953 2954 /** 2955 * Return the list of currently loaded plugins. 2956 * @return The list of currently loaded plugins. 2957 * 2958 * @deprecated This was used for Gears, which has been deprecated. 2959 */ 2960 @Deprecated 2961 public static synchronized PluginList getPluginList() { 2962 return new PluginList(); 2963 } 2964 2965 /** 2966 * @deprecated This was used for Gears, which has been deprecated. 2967 */ 2968 @Deprecated 2969 public void refreshPlugins(boolean reloadOpenPages) { } 2970 2971 //------------------------------------------------------------------------- 2972 // Override View methods 2973 //------------------------------------------------------------------------- 2974 2975 @Override 2976 protected void finalize() throws Throwable { 2977 try { 2978 destroy(); 2979 } finally { 2980 super.finalize(); 2981 } 2982 } 2983 2984 @Override 2985 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 2986 if (child == mTitleBar) { 2987 // When drawing the title bar, move it horizontally to always show 2988 // at the top of the WebView. 2989 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 2990 } 2991 return super.drawChild(canvas, child, drawingTime); 2992 } 2993 2994 private void drawContent(Canvas canvas) { 2995 // Update the buttons in the picture, so when we draw the picture 2996 // to the screen, they are in the correct state. 2997 // Tell the native side if user is a) touching the screen, 2998 // b) pressing the trackball down, or c) pressing the enter key 2999 // If the cursor is on a button, we need to draw it in the pressed 3000 // state. 3001 // If mNativeClass is 0, we should not reach here, so we do not 3002 // need to check it again. 3003 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3004 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3005 || mTrackballDown || mGotCenterDown, false); 3006 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3007 } 3008 3009 @Override 3010 protected void onDraw(Canvas canvas) { 3011 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3012 if (mNativeClass == 0) { 3013 return; 3014 } 3015 3016 int saveCount = canvas.save(); 3017 if (mTitleBar != null) { 3018 canvas.translate(0, (int) mTitleBar.getHeight()); 3019 } 3020 if (mDragTrackerHandler == null) { 3021 drawContent(canvas); 3022 } else { 3023 if (!mDragTrackerHandler.draw(canvas)) { 3024 // sometimes the tracker doesn't draw, even though its active 3025 drawContent(canvas); 3026 } 3027 if (mDragTrackerHandler.isFinished()) { 3028 mDragTrackerHandler = null; 3029 } 3030 } 3031 canvas.restoreToCount(saveCount); 3032 3033 // Now draw the shadow. 3034 if (mTitleBar != null) { 3035 int y = mScrollY + getVisibleTitleHeight(); 3036 int height = (int) (5f * getContext().getResources() 3037 .getDisplayMetrics().density); 3038 mTitleShadow.setBounds(mScrollX, y, mScrollX + getWidth(), 3039 y + height); 3040 mTitleShadow.draw(canvas); 3041 } 3042 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3043 invalidate(); 3044 } 3045 mWebViewCore.signalRepaintDone(); 3046 } 3047 3048 @Override 3049 public void setLayoutParams(ViewGroup.LayoutParams params) { 3050 if (params.height == LayoutParams.WRAP_CONTENT) { 3051 mWrapContent = true; 3052 } 3053 super.setLayoutParams(params); 3054 } 3055 3056 @Override 3057 public boolean performLongClick() { 3058 // performLongClick() is the result of a delayed message. If we switch 3059 // to windows overview, the WebView will be temporarily removed from the 3060 // view system. In that case, do nothing. 3061 if (getParent() == null) return false; 3062 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3063 // Send the click so that the textfield is in focus 3064 centerKeyPressOnTextField(); 3065 rebuildWebTextView(); 3066 } 3067 if (inEditingMode()) { 3068 return mWebTextView.performLongClick(); 3069 } else { 3070 return super.performLongClick(); 3071 } 3072 } 3073 3074 boolean inAnimateZoom() { 3075 return mZoomScale != 0; 3076 } 3077 3078 /** 3079 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3080 * has changed. This is especially important for password fields, which are 3081 * drawn by the WebTextView, since it conveys more information than what 3082 * webkit draws. Thus we need to reposition it to show in the correct 3083 * place. 3084 */ 3085 private boolean mNeedToAdjustWebTextView; 3086 3087 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3088 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3089 Rect vBox = contentToViewRect(contentBounds); 3090 Rect visibleRect = new Rect(); 3091 calcOurVisibleRect(visibleRect); 3092 // If the textfield is on screen, place the WebTextView in 3093 // its new place, accounting for our new scroll/zoom values, 3094 // and adjust its textsize. 3095 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3096 : visibleRect.contains(vBox)) { 3097 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3098 vBox.height()); 3099 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3100 contentToViewDimension( 3101 nativeFocusCandidateTextSize())); 3102 return true; 3103 } else { 3104 // The textfield is now off screen. The user probably 3105 // was not zooming to see the textfield better. Remove 3106 // the WebTextView. If the user types a key, and the 3107 // textfield is still in focus, we will reconstruct 3108 // the WebTextView and scroll it back on screen. 3109 mWebTextView.remove(); 3110 return false; 3111 } 3112 } 3113 3114 private static class Metrics { 3115 int mScrollX; 3116 int mScrollY; 3117 int mWidth; 3118 int mHeight; 3119 float mScale; 3120 } 3121 3122 private Metrics getViewMetrics() { 3123 Metrics metrics = new Metrics(); 3124 metrics.mScrollX = mScrollX; 3125 metrics.mScrollY = computeVerticalScrollOffset(); 3126 metrics.mWidth = getWidth(); 3127 metrics.mHeight = getHeight() - getVisibleTitleHeight(); 3128 metrics.mScale = mActualScale; 3129 return metrics; 3130 } 3131 3132 private void drawLayers(Canvas canvas) { 3133 if (mRootLayer != 0) { 3134 // Currently for each draw we compute the animation values; 3135 // We may in the future decide to do that independently. 3136 if (nativeEvaluateLayersAnimations(mRootLayer)) { 3137 // If we have unfinished (or unstarted) animations, 3138 // we ask for a repaint. 3139 invalidate(); 3140 } 3141 3142 // We can now draw the layers. 3143 nativeDrawLayers(mRootLayer, canvas); 3144 } 3145 } 3146 3147 private void drawCoreAndCursorRing(Canvas canvas, int color, 3148 boolean drawCursorRing) { 3149 if (mDrawHistory) { 3150 canvas.scale(mActualScale, mActualScale); 3151 canvas.drawPicture(mHistoryPicture); 3152 drawLayers(canvas); 3153 return; 3154 } 3155 3156 boolean animateZoom = mZoomScale != 0; 3157 boolean animateScroll = (!mScroller.isFinished() 3158 || mVelocityTracker != null) 3159 && (mTouchMode != TOUCH_DRAG_MODE || 3160 mHeldMotionless != MOTIONLESS_TRUE); 3161 if (mTouchMode == TOUCH_DRAG_MODE) { 3162 if (mHeldMotionless == MOTIONLESS_PENDING) { 3163 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3164 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3165 mHeldMotionless = MOTIONLESS_FALSE; 3166 } 3167 if (mHeldMotionless == MOTIONLESS_FALSE) { 3168 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3169 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3170 mHeldMotionless = MOTIONLESS_PENDING; 3171 } 3172 } 3173 if (animateZoom) { 3174 float zoomScale; 3175 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 3176 if (interval < ZOOM_ANIMATION_LENGTH) { 3177 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 3178 zoomScale = 1.0f / (mInvInitialZoomScale 3179 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 3180 invalidate(); 3181 } else { 3182 zoomScale = mZoomScale; 3183 // set mZoomScale to be 0 as we have done animation 3184 mZoomScale = 0; 3185 WebViewCore.resumeUpdatePicture(mWebViewCore); 3186 // call invalidate() again to draw with the final filters 3187 invalidate(); 3188 if (mNeedToAdjustWebTextView) { 3189 mNeedToAdjustWebTextView = false; 3190 if (didUpdateTextViewBounds(false) 3191 && nativeFocusCandidateIsPassword()) { 3192 // If it is a password field, start drawing the 3193 // WebTextView once again. 3194 mWebTextView.setInPassword(true); 3195 } 3196 } 3197 } 3198 // calculate the intermediate scroll position. As we need to use 3199 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 3200 float scale = zoomScale * mInvInitialZoomScale; 3201 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 3202 - mZoomCenterX); 3203 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 3204 * zoomScale)) + mScrollX; 3205 int titleHeight = getTitleHeight(); 3206 int ty = Math.round(scale 3207 * (mInitialScrollY + mZoomCenterY - titleHeight) 3208 - (mZoomCenterY - titleHeight)); 3209 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 3210 - titleHeight, getViewHeight(), Math.round(mContentHeight 3211 * zoomScale)) + titleHeight) + mScrollY; 3212 canvas.translate(tx, ty); 3213 canvas.scale(zoomScale, zoomScale); 3214 if (inEditingMode() && !mNeedToAdjustWebTextView 3215 && mZoomScale != 0) { 3216 // The WebTextView is up. Keep track of this so we can adjust 3217 // its size and placement when we finish zooming 3218 mNeedToAdjustWebTextView = true; 3219 // If it is in password mode, turn it off so it does not draw 3220 // misplaced. 3221 if (nativeFocusCandidateIsPassword()) { 3222 mWebTextView.setInPassword(false); 3223 } 3224 } 3225 } else { 3226 canvas.scale(mActualScale, mActualScale); 3227 } 3228 3229 mWebViewCore.drawContentPicture(canvas, color, 3230 (animateZoom || mPreviewZoomOnly), animateScroll); 3231 boolean cursorIsInLayer = nativeCursorIsInLayer(); 3232 if (drawCursorRing && !cursorIsInLayer) { 3233 nativeDrawCursorRing(canvas); 3234 } 3235 // When the FindDialog is up, only draw the matches if we are not in 3236 // the process of scrolling them into view. 3237 if (mFindIsUp && !animateScroll) { 3238 nativeDrawMatches(canvas); 3239 } 3240 drawLayers(canvas); 3241 3242 if (mNativeClass == 0) return; 3243 if (mShiftIsPressed && !(animateZoom || mPreviewZoomOnly)) { 3244 if (mTouchSelection || mExtendSelection) { 3245 nativeDrawSelectionRegion(canvas); 3246 } 3247 if (!mTouchSelection) { 3248 nativeDrawSelectionPointer(canvas, mInvActualScale, mSelectX, 3249 mSelectY - getTitleHeight(), mExtendSelection); 3250 } 3251 } else if (drawCursorRing) { 3252 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3253 mTouchMode = TOUCH_SHORTPRESS_MODE; 3254 HitTestResult hitTest = getHitTestResult(); 3255 if (mPreventLongPress || (hitTest != null && 3256 hitTest.mType != HitTestResult.UNKNOWN_TYPE)) { 3257 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3258 .obtainMessage(SWITCH_TO_LONGPRESS), 3259 LONG_PRESS_TIMEOUT); 3260 } 3261 } 3262 if (cursorIsInLayer) nativeDrawCursorRing(canvas); 3263 } 3264 if (mFocusSizeChanged) { 3265 mFocusSizeChanged = false; 3266 // If we are zooming, this will get handled above, when the zoom 3267 // finishes. We also do not need to do this unless the WebTextView 3268 // is showing. 3269 if (!animateZoom && inEditingMode()) { 3270 didUpdateTextViewBounds(true); 3271 } 3272 } 3273 } 3274 3275 // draw history 3276 private boolean mDrawHistory = false; 3277 private Picture mHistoryPicture = null; 3278 private int mHistoryWidth = 0; 3279 private int mHistoryHeight = 0; 3280 3281 // Only check the flag, can be called from WebCore thread 3282 boolean drawHistory() { 3283 return mDrawHistory; 3284 } 3285 3286 // Should only be called in UI thread 3287 void switchOutDrawHistory() { 3288 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3289 if (mDrawHistory && mWebViewCore.pictureReady()) { 3290 mDrawHistory = false; 3291 invalidate(); 3292 int oldScrollX = mScrollX; 3293 int oldScrollY = mScrollY; 3294 mScrollX = pinLocX(mScrollX); 3295 mScrollY = pinLocY(mScrollY); 3296 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3297 mUserScroll = false; 3298 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3299 oldScrollY); 3300 } 3301 sendOurVisibleRect(); 3302 } 3303 } 3304 3305 WebViewCore.CursorData cursorData() { 3306 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3307 result.mMoveGeneration = nativeMoveGeneration(); 3308 result.mFrame = nativeCursorFramePointer(); 3309 Point position = nativeCursorPosition(); 3310 result.mX = position.x; 3311 result.mY = position.y; 3312 return result; 3313 } 3314 3315 /** 3316 * Delete text from start to end in the focused textfield. If there is no 3317 * focus, or if start == end, silently fail. If start and end are out of 3318 * order, swap them. 3319 * @param start Beginning of selection to delete. 3320 * @param end End of selection to delete. 3321 */ 3322 /* package */ void deleteSelection(int start, int end) { 3323 mTextGeneration++; 3324 WebViewCore.TextSelectionData data 3325 = new WebViewCore.TextSelectionData(start, end); 3326 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3327 data); 3328 } 3329 3330 /** 3331 * Set the selection to (start, end) in the focused textfield. If start and 3332 * end are out of order, swap them. 3333 * @param start Beginning of selection. 3334 * @param end End of selection. 3335 */ 3336 /* package */ void setSelection(int start, int end) { 3337 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3338 } 3339 3340 @Override 3341 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3342 InputConnection connection = super.onCreateInputConnection(outAttrs); 3343 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3344 return connection; 3345 } 3346 3347 /** 3348 * Called in response to a message from webkit telling us that the soft 3349 * keyboard should be launched. 3350 */ 3351 private void displaySoftKeyboard(boolean isTextView) { 3352 InputMethodManager imm = (InputMethodManager) 3353 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3354 3355 // bring it back to the default scale so that user can enter text 3356 boolean zoom = mActualScale < mDefaultScale; 3357 if (zoom) { 3358 mInZoomOverview = false; 3359 mZoomCenterX = mLastTouchX; 3360 mZoomCenterY = mLastTouchY; 3361 // do not change text wrap scale so that there is no reflow 3362 setNewZoomScale(mDefaultScale, false, false); 3363 } 3364 if (isTextView) { 3365 rebuildWebTextView(); 3366 if (inEditingMode()) { 3367 imm.showSoftInput(mWebTextView, 0); 3368 if (zoom) { 3369 didUpdateTextViewBounds(true); 3370 } 3371 return; 3372 } 3373 } 3374 // Used by plugins. 3375 // Also used if the navigation cache is out of date, and 3376 // does not recognize that a textfield is in focus. In that 3377 // case, use WebView as the targeted view. 3378 // see http://b/issue?id=2457459 3379 imm.showSoftInput(this, 0); 3380 } 3381 3382 // Called by WebKit to instruct the UI to hide the keyboard 3383 private void hideSoftKeyboard() { 3384 InputMethodManager imm = (InputMethodManager) 3385 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3386 3387 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3388 } 3389 3390 /* 3391 * This method checks the current focus and cursor and potentially rebuilds 3392 * mWebTextView to have the appropriate properties, such as password, 3393 * multiline, and what text it contains. It also removes it if necessary. 3394 */ 3395 /* package */ void rebuildWebTextView() { 3396 // If the WebView does not have focus, do nothing until it gains focus. 3397 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3398 return; 3399 } 3400 boolean alreadyThere = inEditingMode(); 3401 // inEditingMode can only return true if mWebTextView is non-null, 3402 // so we can safely call remove() if (alreadyThere) 3403 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3404 if (alreadyThere) { 3405 mWebTextView.remove(); 3406 } 3407 return; 3408 } 3409 // At this point, we know we have found an input field, so go ahead 3410 // and create the WebTextView if necessary. 3411 if (mWebTextView == null) { 3412 mWebTextView = new WebTextView(mContext, WebView.this); 3413 // Initialize our generation number. 3414 mTextGeneration = 0; 3415 } 3416 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3417 contentToViewDimension(nativeFocusCandidateTextSize())); 3418 Rect visibleRect = new Rect(); 3419 calcOurContentVisibleRect(visibleRect); 3420 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3421 // should be in content coordinates. 3422 Rect bounds = nativeFocusCandidateNodeBounds(); 3423 Rect vBox = contentToViewRect(bounds); 3424 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3425 if (!Rect.intersects(bounds, visibleRect)) { 3426 mWebTextView.bringIntoView(); 3427 } 3428 String text = nativeFocusCandidateText(); 3429 int nodePointer = nativeFocusCandidatePointer(); 3430 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3431 // It is possible that we have the same textfield, but it has moved, 3432 // i.e. In the case of opening/closing the screen. 3433 // In that case, we need to set the dimensions, but not the other 3434 // aspects. 3435 // If the text has been changed by webkit, update it. However, if 3436 // there has been more UI text input, ignore it. We will receive 3437 // another update when that text is recognized. 3438 if (text != null && !text.equals(mWebTextView.getText().toString()) 3439 && nativeTextGeneration() == mTextGeneration) { 3440 mWebTextView.setTextAndKeepSelection(text); 3441 } 3442 } else { 3443 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3444 Gravity.RIGHT : Gravity.NO_GRAVITY); 3445 // This needs to be called before setType, which may call 3446 // requestFormData, and it needs to have the correct nodePointer. 3447 mWebTextView.setNodePointer(nodePointer); 3448 mWebTextView.setType(nativeFocusCandidateType()); 3449 if (null == text) { 3450 if (DebugFlags.WEB_VIEW) { 3451 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3452 } 3453 text = ""; 3454 } 3455 mWebTextView.setTextAndKeepSelection(text); 3456 InputMethodManager imm = InputMethodManager.peekInstance(); 3457 if (imm != null && imm.isActive(mWebTextView)) { 3458 imm.restartInput(mWebTextView); 3459 } 3460 } 3461 mWebTextView.requestFocus(); 3462 } 3463 3464 /** 3465 * Called by WebTextView to find saved form data associated with the 3466 * textfield 3467 * @param name Name of the textfield. 3468 * @param nodePointer Pointer to the node of the textfield, so it can be 3469 * compared to the currently focused textfield when the data is 3470 * retrieved. 3471 */ 3472 /* package */ void requestFormData(String name, int nodePointer) { 3473 if (mWebViewCore.getSettings().getSaveFormData()) { 3474 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3475 update.arg1 = nodePointer; 3476 RequestFormData updater = new RequestFormData(name, getUrl(), 3477 update); 3478 Thread t = new Thread(updater); 3479 t.start(); 3480 } 3481 } 3482 3483 /** 3484 * Pass a message to find out the <label> associated with the <input> 3485 * identified by nodePointer 3486 * @param framePointer Pointer to the frame containing the <input> node 3487 * @param nodePointer Pointer to the node for which a <label> is desired. 3488 */ 3489 /* package */ void requestLabel(int framePointer, int nodePointer) { 3490 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3491 nodePointer); 3492 } 3493 3494 /* 3495 * This class requests an Adapter for the WebTextView which shows past 3496 * entries stored in the database. It is a Runnable so that it can be done 3497 * in its own thread, without slowing down the UI. 3498 */ 3499 private class RequestFormData implements Runnable { 3500 private String mName; 3501 private String mUrl; 3502 private Message mUpdateMessage; 3503 3504 public RequestFormData(String name, String url, Message msg) { 3505 mName = name; 3506 mUrl = url; 3507 mUpdateMessage = msg; 3508 } 3509 3510 public void run() { 3511 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3512 if (pastEntries.size() > 0) { 3513 AutoCompleteAdapter adapter = new 3514 AutoCompleteAdapter(mContext, pastEntries); 3515 mUpdateMessage.obj = adapter; 3516 mUpdateMessage.sendToTarget(); 3517 } 3518 } 3519 } 3520 3521 /** 3522 * Dump the display tree to "/sdcard/displayTree.txt" 3523 * 3524 * @hide debug only 3525 */ 3526 public void dumpDisplayTree() { 3527 nativeDumpDisplayTree(getUrl()); 3528 } 3529 3530 /** 3531 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 3532 * "/sdcard/domTree.txt" 3533 * 3534 * @hide debug only 3535 */ 3536 public void dumpDomTree(boolean toFile) { 3537 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 3538 } 3539 3540 /** 3541 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 3542 * to "/sdcard/renderTree.txt" 3543 * 3544 * @hide debug only 3545 */ 3546 public void dumpRenderTree(boolean toFile) { 3547 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 3548 } 3549 3550 /** 3551 * Dump the V8 counters to standard output. 3552 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 3553 * true. Otherwise, this will do nothing. 3554 * 3555 * @hide debug only 3556 */ 3557 public void dumpV8Counters() { 3558 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 3559 } 3560 3561 // This is used to determine long press with the center key. Does not 3562 // affect long press with the trackball/touch. 3563 private boolean mGotCenterDown = false; 3564 3565 @Override 3566 public boolean onKeyDown(int keyCode, KeyEvent event) { 3567 if (DebugFlags.WEB_VIEW) { 3568 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3569 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3570 } 3571 3572 if (mNativeClass == 0) { 3573 return false; 3574 } 3575 3576 // do this hack up front, so it always works, regardless of touch-mode 3577 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3578 mAutoRedraw = !mAutoRedraw; 3579 if (mAutoRedraw) { 3580 invalidate(); 3581 } 3582 return true; 3583 } 3584 3585 // Bubble up the key event if 3586 // 1. it is a system key; or 3587 // 2. the host application wants to handle it; 3588 if (event.isSystem() 3589 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3590 return false; 3591 } 3592 3593 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3594 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3595 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3596 setUpSelectXY(); 3597 } 3598 3599 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3600 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3601 // always handle the navigation keys in the UI thread 3602 switchOutDrawHistory(); 3603 if (mShiftIsPressed) { 3604 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 3605 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 3606 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 3607 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 3608 int multiplier = event.getRepeatCount() + 1; 3609 moveSelection(xRate * multiplier, yRate * multiplier); 3610 return true; 3611 } 3612 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3613 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3614 return true; 3615 } 3616 // Bubble up the key event as WebView doesn't handle it 3617 return false; 3618 } 3619 3620 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3621 switchOutDrawHistory(); 3622 if (event.getRepeatCount() == 0) { 3623 if (mShiftIsPressed) { 3624 return true; // discard press if copy in progress 3625 } 3626 mGotCenterDown = true; 3627 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3628 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3629 // Already checked mNativeClass, so we do not need to check it 3630 // again. 3631 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3632 return true; 3633 } 3634 // Bubble up the key event as WebView doesn't handle it 3635 return false; 3636 } 3637 3638 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3639 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3640 // turn off copy select if a shift-key combo is pressed 3641 mExtendSelection = mShiftIsPressed = false; 3642 if (mTouchMode == TOUCH_SELECT_MODE) { 3643 mTouchMode = TOUCH_INIT_MODE; 3644 } 3645 } 3646 3647 if (getSettings().getNavDump()) { 3648 switch (keyCode) { 3649 case KeyEvent.KEYCODE_4: 3650 dumpDisplayTree(); 3651 break; 3652 case KeyEvent.KEYCODE_5: 3653 case KeyEvent.KEYCODE_6: 3654 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 3655 break; 3656 case KeyEvent.KEYCODE_7: 3657 case KeyEvent.KEYCODE_8: 3658 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 3659 break; 3660 case KeyEvent.KEYCODE_9: 3661 nativeInstrumentReport(); 3662 return true; 3663 } 3664 } 3665 3666 if (nativeCursorIsTextInput()) { 3667 // This message will put the node in focus, for the DOM's notion 3668 // of focus, and make the focuscontroller active 3669 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3670 nativeCursorNodePointer()); 3671 // This will bring up the WebTextView and put it in focus, for 3672 // our view system's notion of focus 3673 rebuildWebTextView(); 3674 // Now we need to pass the event to it 3675 if (inEditingMode()) { 3676 mWebTextView.setDefaultSelection(); 3677 return mWebTextView.dispatchKeyEvent(event); 3678 } 3679 } else if (nativeHasFocusNode()) { 3680 // In this case, the cursor is not on a text input, but the focus 3681 // might be. Check it, and if so, hand over to the WebTextView. 3682 rebuildWebTextView(); 3683 if (inEditingMode()) { 3684 return mWebTextView.dispatchKeyEvent(event); 3685 } 3686 } 3687 3688 // TODO: should we pass all the keys to DOM or check the meta tag 3689 if (nativeCursorWantsKeyEvents() || true) { 3690 // pass the key to DOM 3691 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3692 // return true as DOM handles the key 3693 return true; 3694 } 3695 3696 // Bubble up the key event as WebView doesn't handle it 3697 return false; 3698 } 3699 3700 @Override 3701 public boolean onKeyUp(int keyCode, KeyEvent event) { 3702 if (DebugFlags.WEB_VIEW) { 3703 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3704 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3705 } 3706 3707 if (mNativeClass == 0) { 3708 return false; 3709 } 3710 3711 // special CALL handling when cursor node's href is "tel:XXX" 3712 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3713 String text = nativeCursorText(); 3714 if (!nativeCursorIsTextInput() && text != null 3715 && text.startsWith(SCHEME_TEL)) { 3716 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3717 getContext().startActivity(intent); 3718 return true; 3719 } 3720 } 3721 3722 // Bubble up the key event if 3723 // 1. it is a system key; or 3724 // 2. the host application wants to handle it; 3725 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3726 return false; 3727 } 3728 3729 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3730 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3731 if (commitCopy()) { 3732 return true; 3733 } 3734 } 3735 3736 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3737 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3738 // always handle the navigation keys in the UI thread 3739 // Bubble up the key event as WebView doesn't handle it 3740 return false; 3741 } 3742 3743 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3744 // remove the long press message first 3745 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3746 mGotCenterDown = false; 3747 3748 if (mShiftIsPressed) { 3749 if (mExtendSelection) { 3750 commitCopy(); 3751 } else { 3752 mExtendSelection = true; 3753 invalidate(); // draw the i-beam instead of the arrow 3754 } 3755 return true; // discard press if copy in progress 3756 } 3757 3758 // perform the single click 3759 Rect visibleRect = sendOurVisibleRect(); 3760 // Note that sendOurVisibleRect calls viewToContent, so the 3761 // coordinates should be in content coordinates. 3762 if (!nativeCursorIntersects(visibleRect)) { 3763 return false; 3764 } 3765 WebViewCore.CursorData data = cursorData(); 3766 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3767 playSoundEffect(SoundEffectConstants.CLICK); 3768 if (nativeCursorIsTextInput()) { 3769 rebuildWebTextView(); 3770 centerKeyPressOnTextField(); 3771 if (inEditingMode()) { 3772 mWebTextView.setDefaultSelection(); 3773 } 3774 return true; 3775 } 3776 clearTextEntry(true); 3777 nativeSetFollowedLink(true); 3778 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 3779 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3780 nativeCursorNodePointer()); 3781 } 3782 return true; 3783 } 3784 3785 // TODO: should we pass all the keys to DOM or check the meta tag 3786 if (nativeCursorWantsKeyEvents() || true) { 3787 // pass the key to DOM 3788 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3789 // return true as DOM handles the key 3790 return true; 3791 } 3792 3793 // Bubble up the key event as WebView doesn't handle it 3794 return false; 3795 } 3796 3797 private void setUpSelectXY() { 3798 mExtendSelection = false; 3799 mShiftIsPressed = true; 3800 if (nativeHasCursorNode()) { 3801 Rect rect = nativeCursorNodeBounds(); 3802 mSelectX = contentToViewX(rect.left); 3803 mSelectY = contentToViewY(rect.top); 3804 } else if (mLastTouchY > getVisibleTitleHeight()) { 3805 mSelectX = mScrollX + (int) mLastTouchX; 3806 mSelectY = mScrollY + (int) mLastTouchY; 3807 } else { 3808 mSelectX = mScrollX + getViewWidth() / 2; 3809 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 3810 } 3811 nativeHideCursor(); 3812 } 3813 3814 public void emulateShiftHeld() { 3815 if (0 == mNativeClass) return; // client isn't initialized 3816 setUpSelectXY(); 3817 } 3818 3819 private boolean commitCopy() { 3820 boolean copiedSomething = false; 3821 if (mExtendSelection) { 3822 String selection = nativeGetSelection(); 3823 if (selection != "") { 3824 if (DebugFlags.WEB_VIEW) { 3825 Log.v(LOGTAG, "commitCopy \"" + selection + "\""); 3826 } 3827 Toast.makeText(mContext 3828 , com.android.internal.R.string.text_copied 3829 , Toast.LENGTH_SHORT).show(); 3830 copiedSomething = true; 3831 try { 3832 IClipboard clip = IClipboard.Stub.asInterface( 3833 ServiceManager.getService("clipboard")); 3834 clip.setClipboardText(selection); 3835 } catch (android.os.RemoteException e) { 3836 Log.e(LOGTAG, "Clipboard failed", e); 3837 } 3838 } 3839 mExtendSelection = false; 3840 } 3841 mShiftIsPressed = false; 3842 invalidate(); // remove selection region and pointer 3843 if (mTouchMode == TOUCH_SELECT_MODE) { 3844 mTouchMode = TOUCH_INIT_MODE; 3845 } 3846 return copiedSomething; 3847 } 3848 3849 @Override 3850 protected void onAttachedToWindow() { 3851 super.onAttachedToWindow(); 3852 if (hasWindowFocus()) onWindowFocusChanged(true); 3853 } 3854 3855 @Override 3856 protected void onDetachedFromWindow() { 3857 clearTextEntry(false); 3858 super.onDetachedFromWindow(); 3859 // Clean up the zoom controller 3860 mZoomButtonsController.setVisible(false); 3861 } 3862 3863 /** 3864 * @deprecated WebView no longer needs to implement 3865 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3866 */ 3867 @Deprecated 3868 public void onChildViewAdded(View parent, View child) {} 3869 3870 /** 3871 * @deprecated WebView no longer needs to implement 3872 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3873 */ 3874 @Deprecated 3875 public void onChildViewRemoved(View p, View child) {} 3876 3877 /** 3878 * @deprecated WebView should not have implemented 3879 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3880 * does nothing now. 3881 */ 3882 @Deprecated 3883 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3884 } 3885 3886 // To avoid drawing the cursor ring, and remove the TextView when our window 3887 // loses focus. 3888 @Override 3889 public void onWindowFocusChanged(boolean hasWindowFocus) { 3890 if (hasWindowFocus) { 3891 if (hasFocus()) { 3892 // If our window regained focus, and we have focus, then begin 3893 // drawing the cursor ring 3894 mDrawCursorRing = true; 3895 if (mNativeClass != 0) { 3896 nativeRecordButtons(true, false, true); 3897 if (inEditingMode()) { 3898 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3899 } 3900 } 3901 } else { 3902 // If our window gained focus, but we do not have it, do not 3903 // draw the cursor ring. 3904 mDrawCursorRing = false; 3905 // We do not call nativeRecordButtons here because we assume 3906 // that when we lost focus, or window focus, it got called with 3907 // false for the first parameter 3908 } 3909 } else { 3910 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3911 /* 3912 * The zoom controls come in their own window, so our window 3913 * loses focus. Our policy is to not draw the cursor ring if 3914 * our window is not focused, but this is an exception since 3915 * the user can still navigate the web page with the zoom 3916 * controls showing. 3917 */ 3918 // If our window has lost focus, stop drawing the cursor ring 3919 mDrawCursorRing = false; 3920 } 3921 mGotKeyDown = false; 3922 mShiftIsPressed = false; 3923 if (mNativeClass != 0) { 3924 nativeRecordButtons(false, false, true); 3925 } 3926 setFocusControllerInactive(); 3927 } 3928 invalidate(); 3929 super.onWindowFocusChanged(hasWindowFocus); 3930 } 3931 3932 /* 3933 * Pass a message to WebCore Thread, telling the WebCore::Page's 3934 * FocusController to be "inactive" so that it will 3935 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3936 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3937 */ 3938 /* package */ void setFocusControllerInactive() { 3939 // Do not need to also check whether mWebViewCore is null, because 3940 // mNativeClass is only set if mWebViewCore is non null 3941 if (mNativeClass == 0) return; 3942 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 3943 } 3944 3945 @Override 3946 protected void onFocusChanged(boolean focused, int direction, 3947 Rect previouslyFocusedRect) { 3948 if (DebugFlags.WEB_VIEW) { 3949 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3950 } 3951 if (focused) { 3952 // When we regain focus, if we have window focus, resume drawing 3953 // the cursor ring 3954 if (hasWindowFocus()) { 3955 mDrawCursorRing = true; 3956 if (mNativeClass != 0) { 3957 nativeRecordButtons(true, false, true); 3958 } 3959 //} else { 3960 // The WebView has gained focus while we do not have 3961 // windowfocus. When our window lost focus, we should have 3962 // called nativeRecordButtons(false...) 3963 } 3964 } else { 3965 // When we lost focus, unless focus went to the TextView (which is 3966 // true if we are in editing mode), stop drawing the cursor ring. 3967 if (!inEditingMode()) { 3968 mDrawCursorRing = false; 3969 if (mNativeClass != 0) { 3970 nativeRecordButtons(false, false, true); 3971 } 3972 setFocusControllerInactive(); 3973 } 3974 mGotKeyDown = false; 3975 } 3976 3977 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3978 } 3979 3980 /** 3981 * @hide 3982 */ 3983 @Override 3984 protected boolean setFrame(int left, int top, int right, int bottom) { 3985 boolean changed = super.setFrame(left, top, right, bottom); 3986 if (!changed && mHeightCanMeasure) { 3987 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 3988 // in WebViewCore after we get the first layout. We do call 3989 // requestLayout() when we get contentSizeChanged(). But the View 3990 // system won't call onSizeChanged if the dimension is not changed. 3991 // In this case, we need to call sendViewSizeZoom() explicitly to 3992 // notify the WebKit about the new dimensions. 3993 sendViewSizeZoom(); 3994 } 3995 return changed; 3996 } 3997 3998 private static class PostScale implements Runnable { 3999 final WebView mWebView; 4000 final boolean mUpdateTextWrap; 4001 4002 public PostScale(WebView webView, boolean updateTextWrap) { 4003 mWebView = webView; 4004 mUpdateTextWrap = updateTextWrap; 4005 } 4006 4007 public void run() { 4008 if (mWebView.mWebViewCore != null) { 4009 // we always force, in case our height changed, in which case we 4010 // still want to send the notification over to webkit. 4011 mWebView.setNewZoomScale(mWebView.mActualScale, 4012 mUpdateTextWrap, true); 4013 } 4014 } 4015 } 4016 4017 @Override 4018 protected void onSizeChanged(int w, int h, int ow, int oh) { 4019 super.onSizeChanged(w, h, ow, oh); 4020 // Center zooming to the center of the screen. 4021 if (mZoomScale == 0) { // unless we're already zooming 4022 // To anchor at top left corner. 4023 mZoomCenterX = 0; 4024 mZoomCenterY = getVisibleTitleHeight(); 4025 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4026 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4027 } 4028 4029 // adjust the max viewport width depending on the view dimensions. This 4030 // is to ensure the scaling is not going insane. So do not shrink it if 4031 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4032 int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE); 4033 if (newMaxViewportWidth > sMaxViewportWidth) { 4034 sMaxViewportWidth = newMaxViewportWidth; 4035 } 4036 4037 // update mMinZoomScale if the minimum zoom scale is not fixed 4038 if (!mMinZoomScaleFixed) { 4039 // when change from narrow screen to wide screen, the new viewWidth 4040 // can be wider than the old content width. We limit the minimum 4041 // scale to 1.0f. The proper minimum scale will be calculated when 4042 // the new picture shows up. 4043 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 4044 / (mDrawHistory ? mHistoryPicture.getWidth() 4045 : mZoomOverviewWidth)); 4046 if (mInitialScaleInPercent > 0) { 4047 // limit the minZoomScale to the initialScale if it is set 4048 float initialScale = mInitialScaleInPercent / 100.0f; 4049 if (mMinZoomScale > initialScale) { 4050 mMinZoomScale = initialScale; 4051 } 4052 } 4053 } 4054 4055 // onSizeChanged() is called during WebView layout. And any 4056 // requestLayout() is blocked during layout. As setNewZoomScale() will 4057 // call its child View to reposition itself through ViewManager's 4058 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 4059 // <b/> 4060 // only update the text wrap scale if width changed. 4061 post(new PostScale(this, w != ow)); 4062 } 4063 4064 @Override 4065 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4066 super.onScrollChanged(l, t, oldl, oldt); 4067 sendOurVisibleRect(); 4068 } 4069 4070 4071 @Override 4072 public boolean dispatchKeyEvent(KeyEvent event) { 4073 boolean dispatch = true; 4074 4075 if (!inEditingMode()) { 4076 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4077 mGotKeyDown = true; 4078 } else { 4079 if (!mGotKeyDown) { 4080 /* 4081 * We got a key up for which we were not the recipient of 4082 * the original key down. Don't give it to the view. 4083 */ 4084 dispatch = false; 4085 } 4086 mGotKeyDown = false; 4087 } 4088 } 4089 4090 if (dispatch) { 4091 return super.dispatchKeyEvent(event); 4092 } else { 4093 // We didn't dispatch, so let something else handle the key 4094 return false; 4095 } 4096 } 4097 4098 // Here are the snap align logic: 4099 // 1. If it starts nearly horizontally or vertically, snap align; 4100 // 2. If there is a dramitic direction change, let it go; 4101 // 3. If there is a same direction back and forth, lock it. 4102 4103 // adjustable parameters 4104 private int mMinLockSnapReverseDistance; 4105 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4106 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4107 4108 private static int sign(float x) { 4109 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4110 } 4111 4112 // if the page can scroll <= this value, we won't allow the drag tracker 4113 // to have any effect. 4114 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4115 4116 private class DragTrackerHandler { 4117 private final DragTracker mProxy; 4118 private final float mStartY, mStartX; 4119 private final float mMinDY, mMinDX; 4120 private final float mMaxDY, mMaxDX; 4121 private float mCurrStretchY, mCurrStretchX; 4122 private int mSX, mSY; 4123 private Interpolator mInterp; 4124 private float[] mXY = new float[2]; 4125 4126 // inner (non-state) classes can't have enums :( 4127 private static final int DRAGGING_STATE = 0; 4128 private static final int ANIMATING_STATE = 1; 4129 private static final int FINISHED_STATE = 2; 4130 private int mState; 4131 4132 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4133 mProxy = proxy; 4134 4135 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4136 int viewTop = getScrollY(); 4137 int viewBottom = viewTop + getHeight(); 4138 4139 mStartY = y; 4140 mMinDY = -viewTop; 4141 mMaxDY = docBottom - viewBottom; 4142 4143 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4144 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4145 " up/down= " + mMinDY + " " + mMaxDY); 4146 } 4147 4148 int docRight = computeHorizontalScrollRange(); 4149 int viewLeft = getScrollX(); 4150 int viewRight = viewLeft + getWidth(); 4151 mStartX = x; 4152 mMinDX = -viewLeft; 4153 mMaxDX = docRight - viewRight; 4154 4155 mState = DRAGGING_STATE; 4156 mProxy.onStartDrag(x, y); 4157 4158 // ensure we buildBitmap at least once 4159 mSX = -99999; 4160 } 4161 4162 private float computeStretch(float delta, float min, float max) { 4163 float stretch = 0; 4164 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4165 if (delta < min) { 4166 stretch = delta - min; 4167 } else if (delta > max) { 4168 stretch = delta - max; 4169 } 4170 } 4171 return stretch; 4172 } 4173 4174 public void dragTo(float x, float y) { 4175 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4176 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4177 4178 if ((mSnapScrollMode & SNAP_X) != 0) { 4179 sy = 0; 4180 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4181 sx = 0; 4182 } 4183 4184 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4185 mCurrStretchX = sx; 4186 mCurrStretchY = sy; 4187 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4188 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4189 " " + sy); 4190 } 4191 if (mProxy.onStretchChange(sx, sy)) { 4192 invalidate(); 4193 } 4194 } 4195 } 4196 4197 public void stopDrag() { 4198 final int DURATION = 200; 4199 int now = (int)SystemClock.uptimeMillis(); 4200 mInterp = new Interpolator(2); 4201 mXY[0] = mCurrStretchX; 4202 mXY[1] = mCurrStretchY; 4203 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4204 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4205 mInterp.setKeyFrame(0, now, mXY, blend); 4206 float[] zerozero = new float[] { 0, 0 }; 4207 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4208 mState = ANIMATING_STATE; 4209 4210 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4211 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4212 } 4213 } 4214 4215 // Call this after each draw. If it ruturns null, the tracker is done 4216 public boolean isFinished() { 4217 return mState == FINISHED_STATE; 4218 } 4219 4220 private int hiddenHeightOfTitleBar() { 4221 return getTitleHeight() - getVisibleTitleHeight(); 4222 } 4223 4224 // need a way to know if 565 or 8888 is the right config for 4225 // capturing the display and giving it to the drag proxy 4226 private Bitmap.Config offscreenBitmapConfig() { 4227 // hard code 565 for now 4228 return Bitmap.Config.RGB_565; 4229 } 4230 4231 /* If the tracker draws, then this returns true, otherwise it will 4232 return false, and draw nothing. 4233 */ 4234 public boolean draw(Canvas canvas) { 4235 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4236 int sx = getScrollX(); 4237 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4238 if (mSX != sx || mSY != sy) { 4239 buildBitmap(sx, sy); 4240 mSX = sx; 4241 mSY = sy; 4242 } 4243 4244 if (mState == ANIMATING_STATE) { 4245 Interpolator.Result result = mInterp.timeToValues(mXY); 4246 if (result == Interpolator.Result.FREEZE_END) { 4247 mState = FINISHED_STATE; 4248 return false; 4249 } else { 4250 mProxy.onStretchChange(mXY[0], mXY[1]); 4251 invalidate(); 4252 // fall through to the draw 4253 } 4254 } 4255 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4256 canvas.translate(sx, sy); 4257 mProxy.onDraw(canvas); 4258 canvas.restoreToCount(count); 4259 return true; 4260 } 4261 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4262 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4263 mCurrStretchX + " " + mCurrStretchY); 4264 } 4265 return false; 4266 } 4267 4268 private void buildBitmap(int sx, int sy) { 4269 int w = getWidth(); 4270 int h = getViewHeight(); 4271 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4272 Canvas canvas = new Canvas(bm); 4273 canvas.translate(-sx, -sy); 4274 drawContent(canvas); 4275 4276 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4277 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4278 " " + sy + " " + w + " " + h); 4279 } 4280 mProxy.onBitmapChange(bm); 4281 } 4282 } 4283 4284 /** @hide */ 4285 public static class DragTracker { 4286 public void onStartDrag(float x, float y) {} 4287 public boolean onStretchChange(float sx, float sy) { 4288 // return true to have us inval the view 4289 return false; 4290 } 4291 public void onStopDrag() {} 4292 public void onBitmapChange(Bitmap bm) {} 4293 public void onDraw(Canvas canvas) {} 4294 } 4295 4296 /** @hide */ 4297 public DragTracker getDragTracker() { 4298 return mDragTracker; 4299 } 4300 4301 /** @hide */ 4302 public void setDragTracker(DragTracker tracker) { 4303 mDragTracker = tracker; 4304 } 4305 4306 private DragTracker mDragTracker; 4307 private DragTrackerHandler mDragTrackerHandler; 4308 4309 private class ScaleDetectorListener implements 4310 ScaleGestureDetector.OnScaleGestureListener { 4311 4312 public boolean onScaleBegin(ScaleGestureDetector detector) { 4313 // cancel the single touch handling 4314 cancelTouch(); 4315 if (mZoomButtonsController.isVisible()) { 4316 mZoomButtonsController.setVisible(false); 4317 } 4318 // reset the zoom overview mode so that the page won't auto grow 4319 mInZoomOverview = false; 4320 // If it is in password mode, turn it off so it does not draw 4321 // misplaced. 4322 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4323 mWebTextView.setInPassword(false); 4324 } 4325 return true; 4326 } 4327 4328 public void onScaleEnd(ScaleGestureDetector detector) { 4329 if (mPreviewZoomOnly) { 4330 mPreviewZoomOnly = false; 4331 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4332 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4333 // don't reflow when zoom in; when zoom out, do reflow if the 4334 // new scale is almost minimum scale; 4335 boolean reflowNow = (mActualScale - mMinZoomScale <= 0.01f) 4336 || ((mActualScale <= 0.8 * mTextWrapScale)); 4337 // force zoom after mPreviewZoomOnly is set to false so that the 4338 // new view size will be passed to the WebKit 4339 setNewZoomScale(mActualScale, reflowNow, true); 4340 // call invalidate() to draw without zoom filter 4341 invalidate(); 4342 } 4343 // adjust the edit text view if needed 4344 if (inEditingMode() && didUpdateTextViewBounds(false) 4345 && nativeFocusCandidateIsPassword()) { 4346 // If it is a password field, start drawing the 4347 // WebTextView once again. 4348 mWebTextView.setInPassword(true); 4349 } 4350 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4351 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4352 // may trigger the unwanted fling. 4353 mTouchMode = TOUCH_PINCH_DRAG; 4354 startTouch(detector.getFocusX(), detector.getFocusY(), 4355 mLastTouchTime); 4356 } 4357 4358 public boolean onScale(ScaleGestureDetector detector) { 4359 float scale = (float) (Math.round(detector.getScaleFactor() 4360 * mActualScale * 100) / 100.0); 4361 if (Math.abs(scale - mActualScale) >= PREVIEW_SCALE_INCREMENT) { 4362 mPreviewZoomOnly = true; 4363 // limit the scale change per step 4364 if (scale > mActualScale) { 4365 scale = Math.min(scale, mActualScale * 1.25f); 4366 } else { 4367 scale = Math.max(scale, mActualScale * 0.8f); 4368 } 4369 mZoomCenterX = detector.getFocusX(); 4370 mZoomCenterY = detector.getFocusY(); 4371 setNewZoomScale(scale, false, false); 4372 invalidate(); 4373 return true; 4374 } 4375 return false; 4376 } 4377 } 4378 4379 @Override 4380 public boolean onTouchEvent(MotionEvent ev) { 4381 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4382 return false; 4383 } 4384 4385 if (DebugFlags.WEB_VIEW) { 4386 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4387 + mTouchMode); 4388 } 4389 4390 int action; 4391 float x, y; 4392 long eventTime = ev.getEventTime(); 4393 4394 // FIXME: we may consider to give WebKit an option to handle multi-touch 4395 // events later. 4396 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 4397 if (mMinZoomScale < mMaxZoomScale) { 4398 mScaleDetector.onTouchEvent(ev); 4399 if (mScaleDetector.isInProgress()) { 4400 mLastTouchTime = eventTime; 4401 return true; 4402 } 4403 x = mScaleDetector.getFocusX(); 4404 y = mScaleDetector.getFocusY(); 4405 action = ev.getAction() & MotionEvent.ACTION_MASK; 4406 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4407 cancelTouch(); 4408 action = MotionEvent.ACTION_DOWN; 4409 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4410 // set mLastTouchX/Y to the remaining point 4411 mLastTouchX = x; 4412 mLastTouchY = y; 4413 } else if (action == MotionEvent.ACTION_MOVE) { 4414 // negative x or y indicate it is on the edge, skip it. 4415 if (x < 0 || y < 0) { 4416 return true; 4417 } 4418 } 4419 } else { 4420 // if the page disallow zoom, skip multi-pointer action 4421 return true; 4422 } 4423 } else { 4424 action = ev.getAction(); 4425 x = ev.getX(); 4426 y = ev.getY(); 4427 } 4428 4429 // Due to the touch screen edge effect, a touch closer to the edge 4430 // always snapped to the edge. As getViewWidth() can be different from 4431 // getWidth() due to the scrollbar, adjusting the point to match 4432 // getViewWidth(). Same applied to the height. 4433 if (x > getViewWidth() - 1) { 4434 x = getViewWidth() - 1; 4435 } 4436 if (y > getViewHeightWithTitle() - 1) { 4437 y = getViewHeightWithTitle() - 1; 4438 } 4439 4440 // pass the touch events from UI thread to WebCore thread 4441 if (mForwardTouchEvents 4442 && (action != MotionEvent.ACTION_MOVE || eventTime 4443 - mLastSentTouchTime > mCurrentTouchInterval) 4444 && (action == MotionEvent.ACTION_DOWN 4445 || mPreventDrag != PREVENT_DRAG_CANCEL)) { 4446 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 4447 ted.mAction = action; 4448 ted.mX = viewToContentX((int) x + mScrollX); 4449 ted.mY = viewToContentY((int) y + mScrollY); 4450 ted.mEventTime = eventTime; 4451 ted.mMetaState = ev.getMetaState(); 4452 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4453 mLastSentTouchTime = eventTime; 4454 } 4455 4456 float fDeltaX = mLastTouchX - x; 4457 float fDeltaY = mLastTouchY - y; 4458 int deltaX = (int) fDeltaX; 4459 int deltaY = (int) fDeltaY; 4460 4461 switch (action) { 4462 case MotionEvent.ACTION_DOWN: { 4463 mPreventDrag = PREVENT_DRAG_NO; 4464 if (!mScroller.isFinished()) { 4465 // stop the current scroll animation, but if this is 4466 // the start of a fling, allow it to add to the current 4467 // fling's velocity 4468 mScroller.abortAnimation(); 4469 mTouchMode = TOUCH_DRAG_START_MODE; 4470 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 4471 } else if (mShiftIsPressed) { 4472 mSelectX = mScrollX + (int) x; 4473 mSelectY = mScrollY + (int) y; 4474 mTouchMode = TOUCH_SELECT_MODE; 4475 if (DebugFlags.WEB_VIEW) { 4476 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 4477 } 4478 nativeMoveSelection(viewToContentX(mSelectX), 4479 viewToContentY(mSelectY), false); 4480 mTouchSelection = mExtendSelection = true; 4481 invalidate(); // draw the i-beam instead of the arrow 4482 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4483 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4484 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4485 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4486 } else { 4487 // commit the short press action for the previous tap 4488 doShortPress(); 4489 // continue, mTouchMode should be still TOUCH_INIT_MODE 4490 } 4491 } else { 4492 mPreviewZoomOnly = false; 4493 mTouchMode = TOUCH_INIT_MODE; 4494 mPreventDrag = mForwardTouchEvents ? PREVENT_DRAG_MAYBE_YES 4495 : PREVENT_DRAG_NO; 4496 mPreventLongPress = false; 4497 mPreventDoubleTap = false; 4498 mWebViewCore.sendMessage( 4499 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4500 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4501 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 4502 (eventTime - mLastTouchUpTime), eventTime); 4503 } 4504 } 4505 // Trigger the link 4506 if (mTouchMode == TOUCH_INIT_MODE 4507 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4508 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4509 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 4510 } 4511 startTouch(x, y, eventTime); 4512 break; 4513 } 4514 case MotionEvent.ACTION_MOVE: { 4515 if (mTouchMode == TOUCH_DONE_MODE) { 4516 // no dragging during scroll zoom animation 4517 break; 4518 } 4519 mVelocityTracker.addMovement(ev); 4520 4521 if (mTouchMode != TOUCH_DRAG_MODE) { 4522 if (mTouchMode == TOUCH_SELECT_MODE) { 4523 mSelectX = mScrollX + (int) x; 4524 mSelectY = mScrollY + (int) y; 4525 if (DebugFlags.WEB_VIEW) { 4526 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 4527 } 4528 nativeMoveSelection(viewToContentX(mSelectX), 4529 viewToContentY(mSelectY), true); 4530 invalidate(); 4531 break; 4532 } 4533 if ((deltaX * deltaX + deltaY * deltaY) < mTouchSlopSquare) { 4534 break; 4535 } 4536 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 4537 // track mLastTouchTime as we may need to do fling at 4538 // ACTION_UP 4539 mLastTouchTime = eventTime; 4540 break; 4541 } 4542 if (mTouchMode == TOUCH_SHORTPRESS_MODE 4543 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4544 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4545 } else if (mTouchMode == TOUCH_INIT_MODE 4546 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4547 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4548 } 4549 if (mFullScreenHolder != null) { 4550 // in full screen mode, the WebView can't be panned. 4551 mTouchMode = TOUCH_DONE_MODE; 4552 break; 4553 } 4554 4555 // if it starts nearly horizontal or vertical, enforce it 4556 int ax = Math.abs(deltaX); 4557 int ay = Math.abs(deltaY); 4558 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4559 mSnapScrollMode = SNAP_X; 4560 mSnapPositive = deltaX > 0; 4561 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4562 mSnapScrollMode = SNAP_Y; 4563 mSnapPositive = deltaY > 0; 4564 } 4565 4566 mTouchMode = TOUCH_DRAG_MODE; 4567 mLastTouchX = x; 4568 mLastTouchY = y; 4569 fDeltaX = 0.0f; 4570 fDeltaY = 0.0f; 4571 deltaX = 0; 4572 deltaY = 0; 4573 4574 WebViewCore.reducePriority(); 4575 if (!mDragFromTextInput) { 4576 nativeHideCursor(); 4577 } 4578 WebSettings settings = getSettings(); 4579 if (settings.supportZoom() 4580 && settings.getBuiltInZoomControls() 4581 && !mZoomButtonsController.isVisible() 4582 && mMinZoomScale < mMaxZoomScale) { 4583 mZoomButtonsController.setVisible(true); 4584 int count = settings.getDoubleTapToastCount(); 4585 if (mInZoomOverview && count > 0) { 4586 settings.setDoubleTapToastCount(--count); 4587 Toast.makeText(mContext, 4588 com.android.internal.R.string.double_tap_toast, 4589 Toast.LENGTH_LONG).show(); 4590 } 4591 } 4592 } 4593 4594 // do pan 4595 int newScrollX = pinLocX(mScrollX + deltaX); 4596 int newDeltaX = newScrollX - mScrollX; 4597 if (deltaX != newDeltaX) { 4598 deltaX = newDeltaX; 4599 fDeltaX = (float) newDeltaX; 4600 } 4601 int newScrollY = pinLocY(mScrollY + deltaY); 4602 int newDeltaY = newScrollY - mScrollY; 4603 if (deltaY != newDeltaY) { 4604 deltaY = newDeltaY; 4605 fDeltaY = (float) newDeltaY; 4606 } 4607 boolean done = false; 4608 boolean keepScrollBarsVisible = false; 4609 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 4610 keepScrollBarsVisible = done = true; 4611 } else { 4612 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4613 int ax = Math.abs(deltaX); 4614 int ay = Math.abs(deltaY); 4615 if (mSnapScrollMode == SNAP_X) { 4616 // radical change means getting out of snap mode 4617 if (ay > MAX_SLOPE_FOR_DIAG * ax 4618 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4619 mSnapScrollMode = SNAP_NONE; 4620 } 4621 // reverse direction means lock in the snap mode 4622 if (ax > MAX_SLOPE_FOR_DIAG * ay && 4623 (mSnapPositive 4624 ? deltaX < -mMinLockSnapReverseDistance 4625 : deltaX > mMinLockSnapReverseDistance)) { 4626 mSnapScrollMode |= SNAP_LOCK; 4627 } 4628 } else { 4629 // radical change means getting out of snap mode 4630 if (ax > MAX_SLOPE_FOR_DIAG * ay 4631 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4632 mSnapScrollMode = SNAP_NONE; 4633 } 4634 // reverse direction means lock in the snap mode 4635 if (ay > MAX_SLOPE_FOR_DIAG * ax && 4636 (mSnapPositive 4637 ? deltaY < -mMinLockSnapReverseDistance 4638 : deltaY > mMinLockSnapReverseDistance)) { 4639 mSnapScrollMode |= SNAP_LOCK; 4640 } 4641 } 4642 } 4643 if (mSnapScrollMode != SNAP_NONE) { 4644 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 4645 deltaY = 0; 4646 } else { 4647 deltaX = 0; 4648 } 4649 } 4650 if ((deltaX | deltaY) != 0) { 4651 scrollBy(deltaX, deltaY); 4652 if (deltaX != 0) { 4653 mLastTouchX = x; 4654 } 4655 if (deltaY != 0) { 4656 mLastTouchY = y; 4657 } 4658 mHeldMotionless = MOTIONLESS_FALSE; 4659 } else { 4660 // keep the scrollbar on the screen even there is no 4661 // scroll 4662 keepScrollBarsVisible = true; 4663 } 4664 mLastTouchTime = eventTime; 4665 mUserScroll = true; 4666 } 4667 4668 if (!getSettings().getBuiltInZoomControls()) { 4669 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 4670 if (mZoomControls != null && showPlusMinus) { 4671 if (mZoomControls.getVisibility() == View.VISIBLE) { 4672 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4673 } else { 4674 mZoomControls.show(showPlusMinus, false); 4675 } 4676 mPrivateHandler.postDelayed(mZoomControlRunnable, 4677 ZOOM_CONTROLS_TIMEOUT); 4678 } 4679 } 4680 4681 if (mDragTrackerHandler != null) { 4682 mDragTrackerHandler.dragTo(x, y); 4683 } 4684 4685 if (keepScrollBarsVisible) { 4686 if (mHeldMotionless != MOTIONLESS_TRUE) { 4687 mHeldMotionless = MOTIONLESS_TRUE; 4688 invalidate(); 4689 } 4690 // keep the scrollbar on the screen even there is no scroll 4691 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 4692 false); 4693 // return false to indicate that we can't pan out of the 4694 // view space 4695 return !done; 4696 } 4697 break; 4698 } 4699 case MotionEvent.ACTION_UP: { 4700 if (mDragTrackerHandler != null) { 4701 mDragTrackerHandler.stopDrag(); 4702 } 4703 mLastTouchUpTime = eventTime; 4704 switch (mTouchMode) { 4705 case TOUCH_DOUBLE_TAP_MODE: // double tap 4706 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4707 mTouchMode = TOUCH_DONE_MODE; 4708 if (mPreventDoubleTap) { 4709 WebViewCore.TouchEventData ted 4710 = new WebViewCore.TouchEventData(); 4711 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 4712 ted.mX = viewToContentX((int) x + mScrollX); 4713 ted.mY = viewToContentY((int) y + mScrollY); 4714 ted.mEventTime = eventTime; 4715 ted.mMetaState = ev.getMetaState(); 4716 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4717 } else if (mFullScreenHolder == null) { 4718 doDoubleTap(); 4719 } 4720 break; 4721 case TOUCH_SELECT_MODE: 4722 commitCopy(); 4723 mTouchSelection = false; 4724 break; 4725 case TOUCH_INIT_MODE: // tap 4726 case TOUCH_SHORTPRESS_START_MODE: 4727 case TOUCH_SHORTPRESS_MODE: 4728 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4729 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4730 if ((deltaX * deltaX + deltaY * deltaY) > mTouchSlopSquare) { 4731 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 4732 " WebCore's response for touch down."); 4733 if (mFullScreenHolder == null 4734 && (computeHorizontalScrollExtent() < computeHorizontalScrollRange() 4735 || computeVerticalScrollExtent() < computeVerticalScrollRange())) { 4736 // we will not rewrite drag code here, but we 4737 // will try fling if it applies. 4738 WebViewCore.reducePriority(); 4739 // fall through to TOUCH_DRAG_MODE 4740 } else { 4741 break; 4742 } 4743 } else { 4744 // mPreventDrag can be PREVENT_DRAG_MAYBE_YES in 4745 // TOUCH_INIT_MODE. To give WebCoreThread a little 4746 // more time to send PREVENT_TOUCH_ID, we check 4747 // again in responding RELEASE_SINGLE_TAP. 4748 if (mPreventDrag != PREVENT_DRAG_YES) { 4749 if (mTouchMode == TOUCH_INIT_MODE) { 4750 mPrivateHandler.sendMessageDelayed( 4751 mPrivateHandler.obtainMessage( 4752 RELEASE_SINGLE_TAP), 4753 ViewConfiguration.getDoubleTapTimeout()); 4754 } else { 4755 mTouchMode = TOUCH_DONE_MODE; 4756 doShortPress(); 4757 } 4758 } 4759 break; 4760 } 4761 case TOUCH_DRAG_MODE: 4762 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4763 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4764 mHeldMotionless = MOTIONLESS_TRUE; 4765 // redraw in high-quality, as we're done dragging 4766 invalidate(); 4767 // if the user waits a while w/o moving before the 4768 // up, we don't want to do a fling 4769 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4770 mVelocityTracker.addMovement(ev); 4771 doFling(); 4772 break; 4773 } 4774 mLastVelocity = 0; 4775 WebViewCore.resumePriority(); 4776 break; 4777 case TOUCH_DRAG_START_MODE: 4778 case TOUCH_DONE_MODE: 4779 // do nothing 4780 break; 4781 } 4782 // we also use mVelocityTracker == null to tell us that we are 4783 // not "moving around", so we can take the slower/prettier 4784 // mode in the drawing code 4785 if (mVelocityTracker != null) { 4786 mVelocityTracker.recycle(); 4787 mVelocityTracker = null; 4788 } 4789 break; 4790 } 4791 case MotionEvent.ACTION_CANCEL: { 4792 cancelTouch(); 4793 break; 4794 } 4795 } 4796 return true; 4797 } 4798 4799 private void startTouch(float x, float y, long eventTime) { 4800 // Remember where the motion event started 4801 mLastTouchX = x; 4802 mLastTouchY = y; 4803 mLastTouchTime = eventTime; 4804 mVelocityTracker = VelocityTracker.obtain(); 4805 mSnapScrollMode = SNAP_NONE; 4806 if (mDragTracker != null) { 4807 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 4808 } 4809 } 4810 4811 private void cancelTouch() { 4812 if (mDragTrackerHandler != null) { 4813 mDragTrackerHandler.stopDrag(); 4814 } 4815 // we also use mVelocityTracker == null to tell us that we are 4816 // not "moving around", so we can take the slower/prettier 4817 // mode in the drawing code 4818 if (mVelocityTracker != null) { 4819 mVelocityTracker.recycle(); 4820 mVelocityTracker = null; 4821 } 4822 if (mTouchMode == TOUCH_DRAG_MODE) { 4823 WebViewCore.resumePriority(); 4824 } 4825 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4826 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4827 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4828 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4829 mHeldMotionless = MOTIONLESS_TRUE; 4830 mTouchMode = TOUCH_DONE_MODE; 4831 nativeHideCursor(); 4832 } 4833 4834 private long mTrackballFirstTime = 0; 4835 private long mTrackballLastTime = 0; 4836 private float mTrackballRemainsX = 0.0f; 4837 private float mTrackballRemainsY = 0.0f; 4838 private int mTrackballXMove = 0; 4839 private int mTrackballYMove = 0; 4840 private boolean mExtendSelection = false; 4841 private boolean mTouchSelection = false; 4842 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4843 private static final int TRACKBALL_TIMEOUT = 200; 4844 private static final int TRACKBALL_WAIT = 100; 4845 private static final int TRACKBALL_SCALE = 400; 4846 private static final int TRACKBALL_SCROLL_COUNT = 5; 4847 private static final int TRACKBALL_MOVE_COUNT = 10; 4848 private static final int TRACKBALL_MULTIPLIER = 3; 4849 private static final int SELECT_CURSOR_OFFSET = 16; 4850 private int mSelectX = 0; 4851 private int mSelectY = 0; 4852 private boolean mFocusSizeChanged = false; 4853 private boolean mShiftIsPressed = false; 4854 private boolean mTrackballDown = false; 4855 private long mTrackballUpTime = 0; 4856 private long mLastCursorTime = 0; 4857 private Rect mLastCursorBounds; 4858 4859 // Set by default; BrowserActivity clears to interpret trackball data 4860 // directly for movement. Currently, the framework only passes 4861 // arrow key events, not trackball events, from one child to the next 4862 private boolean mMapTrackballToArrowKeys = true; 4863 4864 public void setMapTrackballToArrowKeys(boolean setMap) { 4865 mMapTrackballToArrowKeys = setMap; 4866 } 4867 4868 void resetTrackballTime() { 4869 mTrackballLastTime = 0; 4870 } 4871 4872 @Override 4873 public boolean onTrackballEvent(MotionEvent ev) { 4874 long time = ev.getEventTime(); 4875 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4876 if (ev.getY() > 0) pageDown(true); 4877 if (ev.getY() < 0) pageUp(true); 4878 return true; 4879 } 4880 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4881 if (mShiftIsPressed) { 4882 return true; // discard press if copy in progress 4883 } 4884 mTrackballDown = true; 4885 if (mNativeClass == 0) { 4886 return false; 4887 } 4888 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4889 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4890 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4891 nativeSelectBestAt(mLastCursorBounds); 4892 } 4893 if (DebugFlags.WEB_VIEW) { 4894 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4895 + " time=" + time 4896 + " mLastCursorTime=" + mLastCursorTime); 4897 } 4898 if (isInTouchMode()) requestFocusFromTouch(); 4899 return false; // let common code in onKeyDown at it 4900 } 4901 if (ev.getAction() == MotionEvent.ACTION_UP) { 4902 // LONG_PRESS_CENTER is set in common onKeyDown 4903 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4904 mTrackballDown = false; 4905 mTrackballUpTime = time; 4906 if (mShiftIsPressed) { 4907 if (mExtendSelection) { 4908 commitCopy(); 4909 } else { 4910 mExtendSelection = true; 4911 invalidate(); // draw the i-beam instead of the arrow 4912 } 4913 return true; // discard press if copy in progress 4914 } 4915 if (DebugFlags.WEB_VIEW) { 4916 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4917 + " time=" + time 4918 ); 4919 } 4920 return false; // let common code in onKeyUp at it 4921 } 4922 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4923 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4924 return false; 4925 } 4926 if (mTrackballDown) { 4927 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4928 return true; // discard move if trackball is down 4929 } 4930 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4931 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4932 return true; 4933 } 4934 // TODO: alternatively we can do panning as touch does 4935 switchOutDrawHistory(); 4936 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4937 if (DebugFlags.WEB_VIEW) { 4938 Log.v(LOGTAG, "onTrackballEvent time=" 4939 + time + " last=" + mTrackballLastTime); 4940 } 4941 mTrackballFirstTime = time; 4942 mTrackballXMove = mTrackballYMove = 0; 4943 } 4944 mTrackballLastTime = time; 4945 if (DebugFlags.WEB_VIEW) { 4946 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4947 } 4948 mTrackballRemainsX += ev.getX(); 4949 mTrackballRemainsY += ev.getY(); 4950 doTrackball(time); 4951 return true; 4952 } 4953 4954 void moveSelection(float xRate, float yRate) { 4955 if (mNativeClass == 0) 4956 return; 4957 int width = getViewWidth(); 4958 int height = getViewHeight(); 4959 mSelectX += xRate; 4960 mSelectY += yRate; 4961 int maxX = width + mScrollX; 4962 int maxY = height + mScrollY; 4963 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 4964 , mSelectX)); 4965 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 4966 , mSelectY)); 4967 if (DebugFlags.WEB_VIEW) { 4968 Log.v(LOGTAG, "moveSelection" 4969 + " mSelectX=" + mSelectX 4970 + " mSelectY=" + mSelectY 4971 + " mScrollX=" + mScrollX 4972 + " mScrollY=" + mScrollY 4973 + " xRate=" + xRate 4974 + " yRate=" + yRate 4975 ); 4976 } 4977 nativeMoveSelection(viewToContentX(mSelectX), 4978 viewToContentY(mSelectY), mExtendSelection); 4979 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 4980 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4981 : 0; 4982 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 4983 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4984 : 0; 4985 pinScrollBy(scrollX, scrollY, true, 0); 4986 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 4987 requestRectangleOnScreen(select); 4988 invalidate(); 4989 } 4990 4991 private int scaleTrackballX(float xRate, int width) { 4992 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4993 int nextXMove = xMove; 4994 if (xMove > 0) { 4995 if (xMove > mTrackballXMove) { 4996 xMove -= mTrackballXMove; 4997 } 4998 } else if (xMove < mTrackballXMove) { 4999 xMove -= mTrackballXMove; 5000 } 5001 mTrackballXMove = nextXMove; 5002 return xMove; 5003 } 5004 5005 private int scaleTrackballY(float yRate, int height) { 5006 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5007 int nextYMove = yMove; 5008 if (yMove > 0) { 5009 if (yMove > mTrackballYMove) { 5010 yMove -= mTrackballYMove; 5011 } 5012 } else if (yMove < mTrackballYMove) { 5013 yMove -= mTrackballYMove; 5014 } 5015 mTrackballYMove = nextYMove; 5016 return yMove; 5017 } 5018 5019 private int keyCodeToSoundsEffect(int keyCode) { 5020 switch(keyCode) { 5021 case KeyEvent.KEYCODE_DPAD_UP: 5022 return SoundEffectConstants.NAVIGATION_UP; 5023 case KeyEvent.KEYCODE_DPAD_RIGHT: 5024 return SoundEffectConstants.NAVIGATION_RIGHT; 5025 case KeyEvent.KEYCODE_DPAD_DOWN: 5026 return SoundEffectConstants.NAVIGATION_DOWN; 5027 case KeyEvent.KEYCODE_DPAD_LEFT: 5028 return SoundEffectConstants.NAVIGATION_LEFT; 5029 } 5030 throw new IllegalArgumentException("keyCode must be one of " + 5031 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5032 "KEYCODE_DPAD_LEFT}."); 5033 } 5034 5035 private void doTrackball(long time) { 5036 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5037 if (elapsed == 0) { 5038 elapsed = TRACKBALL_TIMEOUT; 5039 } 5040 float xRate = mTrackballRemainsX * 1000 / elapsed; 5041 float yRate = mTrackballRemainsY * 1000 / elapsed; 5042 int viewWidth = getViewWidth(); 5043 int viewHeight = getViewHeight(); 5044 if (mShiftIsPressed) { 5045 moveSelection(scaleTrackballX(xRate, viewWidth), 5046 scaleTrackballY(yRate, viewHeight)); 5047 mTrackballRemainsX = mTrackballRemainsY = 0; 5048 return; 5049 } 5050 float ax = Math.abs(xRate); 5051 float ay = Math.abs(yRate); 5052 float maxA = Math.max(ax, ay); 5053 if (DebugFlags.WEB_VIEW) { 5054 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5055 + " xRate=" + xRate 5056 + " yRate=" + yRate 5057 + " mTrackballRemainsX=" + mTrackballRemainsX 5058 + " mTrackballRemainsY=" + mTrackballRemainsY); 5059 } 5060 int width = mContentWidth - viewWidth; 5061 int height = mContentHeight - viewHeight; 5062 if (width < 0) width = 0; 5063 if (height < 0) height = 0; 5064 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5065 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5066 maxA = Math.max(ax, ay); 5067 int count = Math.max(0, (int) maxA); 5068 int oldScrollX = mScrollX; 5069 int oldScrollY = mScrollY; 5070 if (count > 0) { 5071 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5072 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5073 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5074 KeyEvent.KEYCODE_DPAD_RIGHT; 5075 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5076 if (DebugFlags.WEB_VIEW) { 5077 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5078 + " count=" + count 5079 + " mTrackballRemainsX=" + mTrackballRemainsX 5080 + " mTrackballRemainsY=" + mTrackballRemainsY); 5081 } 5082 if (navHandledKey(selectKeyCode, count, false, time, false)) { 5083 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5084 } 5085 mTrackballRemainsX = mTrackballRemainsY = 0; 5086 } 5087 if (count >= TRACKBALL_SCROLL_COUNT) { 5088 int xMove = scaleTrackballX(xRate, width); 5089 int yMove = scaleTrackballY(yRate, height); 5090 if (DebugFlags.WEB_VIEW) { 5091 Log.v(LOGTAG, "doTrackball pinScrollBy" 5092 + " count=" + count 5093 + " xMove=" + xMove + " yMove=" + yMove 5094 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5095 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5096 ); 5097 } 5098 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5099 xMove = 0; 5100 } 5101 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5102 yMove = 0; 5103 } 5104 if (xMove != 0 || yMove != 0) { 5105 pinScrollBy(xMove, yMove, true, 0); 5106 } 5107 mUserScroll = true; 5108 } 5109 } 5110 5111 private int computeMaxScrollY() { 5112 int maxContentH = computeVerticalScrollRange() + getTitleHeight(); 5113 return Math.max(maxContentH - getViewHeightWithTitle(), getTitleHeight()); 5114 } 5115 5116 public void flingScroll(int vx, int vy) { 5117 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5118 int maxY = computeMaxScrollY(); 5119 5120 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 5121 invalidate(); 5122 } 5123 5124 private void doFling() { 5125 if (mVelocityTracker == null) { 5126 return; 5127 } 5128 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5129 int maxY = computeMaxScrollY(); 5130 5131 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5132 int vx = (int) mVelocityTracker.getXVelocity(); 5133 int vy = (int) mVelocityTracker.getYVelocity(); 5134 5135 if (mSnapScrollMode != SNAP_NONE) { 5136 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5137 vy = 0; 5138 } else { 5139 vx = 0; 5140 } 5141 } 5142 5143 if (true /* EMG release: make our fling more like Maps' */) { 5144 // maps cuts their velocity in half 5145 vx = vx * 3 / 4; 5146 vy = vy * 3 / 4; 5147 } 5148 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5149 WebViewCore.resumePriority(); 5150 return; 5151 } 5152 float currentVelocity = mScroller.getCurrVelocity(); 5153 if (mLastVelocity > 0 && currentVelocity > 0) { 5154 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5155 - Math.atan2(vy, vx))); 5156 final float circle = (float) (Math.PI) * 2.0f; 5157 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5158 vx += currentVelocity * mLastVelX / mLastVelocity; 5159 vy += currentVelocity * mLastVelY / mLastVelocity; 5160 if (DebugFlags.WEB_VIEW) { 5161 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5162 } 5163 } else if (DebugFlags.WEB_VIEW) { 5164 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5165 } 5166 } else if (DebugFlags.WEB_VIEW) { 5167 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5168 + " current=" + currentVelocity 5169 + " vx=" + vx + " vy=" + vy 5170 + " maxX=" + maxX + " maxY=" + maxY 5171 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5172 } 5173 mLastVelX = vx; 5174 mLastVelY = vy; 5175 mLastVelocity = (float) Math.hypot(vx, vy); 5176 5177 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 5178 // TODO: duration is calculated based on velocity, if the range is 5179 // small, the animation will stop before duration is up. We may 5180 // want to calculate how long the animation is going to run to precisely 5181 // resume the webcore update. 5182 final int time = mScroller.getDuration(); 5183 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5184 awakenScrollBars(time); 5185 invalidate(); 5186 } 5187 5188 private boolean zoomWithPreview(float scale) { 5189 float oldScale = mActualScale; 5190 mInitialScrollX = mScrollX; 5191 mInitialScrollY = mScrollY; 5192 5193 // snap to DEFAULT_SCALE if it is close 5194 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 5195 scale = mDefaultScale; 5196 } 5197 5198 setNewZoomScale(scale, true, false); 5199 5200 if (oldScale != mActualScale) { 5201 // use mZoomPickerScale to see zoom preview first 5202 mZoomStart = SystemClock.uptimeMillis(); 5203 mInvInitialZoomScale = 1.0f / oldScale; 5204 mInvFinalZoomScale = 1.0f / mActualScale; 5205 mZoomScale = mActualScale; 5206 WebViewCore.pauseUpdatePicture(mWebViewCore); 5207 invalidate(); 5208 return true; 5209 } else { 5210 return false; 5211 } 5212 } 5213 5214 /** 5215 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5216 * in charge of installing this view to the view hierarchy. This view will 5217 * become visible when the user starts scrolling via touch and fade away if 5218 * the user does not interact with it. 5219 * <p/> 5220 * API version 3 introduces a built-in zoom mechanism that is shown 5221 * automatically by the MapView. This is the preferred approach for 5222 * showing the zoom UI. 5223 * 5224 * @deprecated The built-in zoom mechanism is preferred, see 5225 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5226 */ 5227 @Deprecated 5228 public View getZoomControls() { 5229 if (!getSettings().supportZoom()) { 5230 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5231 return null; 5232 } 5233 if (mZoomControls == null) { 5234 mZoomControls = createZoomControls(); 5235 5236 /* 5237 * need to be set to VISIBLE first so that getMeasuredHeight() in 5238 * {@link #onSizeChanged()} can return the measured value for proper 5239 * layout. 5240 */ 5241 mZoomControls.setVisibility(View.VISIBLE); 5242 mZoomControlRunnable = new Runnable() { 5243 public void run() { 5244 5245 /* Don't dismiss the controls if the user has 5246 * focus on them. Wait and check again later. 5247 */ 5248 if (!mZoomControls.hasFocus()) { 5249 mZoomControls.hide(); 5250 } else { 5251 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5252 mPrivateHandler.postDelayed(mZoomControlRunnable, 5253 ZOOM_CONTROLS_TIMEOUT); 5254 } 5255 } 5256 }; 5257 } 5258 return mZoomControls; 5259 } 5260 5261 private ExtendedZoomControls createZoomControls() { 5262 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 5263 , null); 5264 zoomControls.setOnZoomInClickListener(new OnClickListener() { 5265 public void onClick(View v) { 5266 // reset time out 5267 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5268 mPrivateHandler.postDelayed(mZoomControlRunnable, 5269 ZOOM_CONTROLS_TIMEOUT); 5270 zoomIn(); 5271 } 5272 }); 5273 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 5274 public void onClick(View v) { 5275 // reset time out 5276 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5277 mPrivateHandler.postDelayed(mZoomControlRunnable, 5278 ZOOM_CONTROLS_TIMEOUT); 5279 zoomOut(); 5280 } 5281 }); 5282 return zoomControls; 5283 } 5284 5285 /** 5286 * Gets the {@link ZoomButtonsController} which can be used to add 5287 * additional buttons to the zoom controls window. 5288 * 5289 * @return The instance of {@link ZoomButtonsController} used by this class, 5290 * or null if it is unavailable. 5291 * @hide 5292 */ 5293 public ZoomButtonsController getZoomButtonsController() { 5294 return mZoomButtonsController; 5295 } 5296 5297 /** 5298 * Perform zoom in in the webview 5299 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 5300 */ 5301 public boolean zoomIn() { 5302 // TODO: alternatively we can disallow this during draw history mode 5303 switchOutDrawHistory(); 5304 mInZoomOverview = false; 5305 // Center zooming to the center of the screen. 5306 mZoomCenterX = getViewWidth() * .5f; 5307 mZoomCenterY = getViewHeight() * .5f; 5308 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5309 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5310 return zoomWithPreview(mActualScale * 1.25f); 5311 } 5312 5313 /** 5314 * Perform zoom out in the webview 5315 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 5316 */ 5317 public boolean zoomOut() { 5318 // TODO: alternatively we can disallow this during draw history mode 5319 switchOutDrawHistory(); 5320 // Center zooming to the center of the screen. 5321 mZoomCenterX = getViewWidth() * .5f; 5322 mZoomCenterY = getViewHeight() * .5f; 5323 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5324 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5325 return zoomWithPreview(mActualScale * 0.8f); 5326 } 5327 5328 private void updateSelection() { 5329 if (mNativeClass == 0) { 5330 return; 5331 } 5332 // mLastTouchX and mLastTouchY are the point in the current viewport 5333 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5334 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5335 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 5336 contentX + mNavSlop, contentY + mNavSlop); 5337 nativeSelectBestAt(rect); 5338 } 5339 5340 /** 5341 * Scroll the focused text field/area to match the WebTextView 5342 * @param xPercent New x position of the WebTextView from 0 to 1. 5343 * @param y New y position of the WebTextView in view coordinates 5344 */ 5345 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 5346 if (!inEditingMode() || mWebViewCore == null) { 5347 return; 5348 } 5349 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 5350 // Since this position is relative to the top of the text input 5351 // field, we do not need to take the title bar's height into 5352 // consideration. 5353 viewToContentDimension(y), 5354 new Float(xPercent)); 5355 } 5356 5357 /** 5358 * Set our starting point and time for a drag from the WebTextView. 5359 */ 5360 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 5361 if (!inEditingMode()) { 5362 return; 5363 } 5364 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 5365 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 5366 mLastTouchTime = eventTime; 5367 if (!mScroller.isFinished()) { 5368 abortAnimation(); 5369 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5370 } 5371 mSnapScrollMode = SNAP_NONE; 5372 mVelocityTracker = VelocityTracker.obtain(); 5373 mTouchMode = TOUCH_DRAG_START_MODE; 5374 } 5375 5376 /** 5377 * Given a motion event from the WebTextView, set its location to our 5378 * coordinates, and handle the event. 5379 */ 5380 /*package*/ boolean textFieldDrag(MotionEvent event) { 5381 if (!inEditingMode()) { 5382 return false; 5383 } 5384 mDragFromTextInput = true; 5385 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 5386 (float) (mWebTextView.getTop() - mScrollY)); 5387 boolean result = onTouchEvent(event); 5388 mDragFromTextInput = false; 5389 return result; 5390 } 5391 5392 /** 5393 * Due a touch up from a WebTextView. This will be handled by webkit to 5394 * change the selection. 5395 * @param event MotionEvent in the WebTextView's coordinates. 5396 */ 5397 /*package*/ void touchUpOnTextField(MotionEvent event) { 5398 if (!inEditingMode()) { 5399 return; 5400 } 5401 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 5402 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 5403 nativeMotionUp(x, y, mNavSlop); 5404 } 5405 5406 /** 5407 * Called when pressing the center key or trackball on a textfield. 5408 */ 5409 /*package*/ void centerKeyPressOnTextField() { 5410 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 5411 nativeCursorNodePointer()); 5412 } 5413 5414 private void doShortPress() { 5415 if (mNativeClass == 0) { 5416 return; 5417 } 5418 switchOutDrawHistory(); 5419 // mLastTouchX and mLastTouchY are the point in the current viewport 5420 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5421 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5422 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 5423 WebViewCore.MotionUpData motionUpData = new WebViewCore 5424 .MotionUpData(); 5425 motionUpData.mFrame = nativeCacheHitFramePointer(); 5426 motionUpData.mNode = nativeCacheHitNodePointer(); 5427 motionUpData.mBounds = nativeCacheHitNodeBounds(); 5428 motionUpData.mX = contentX; 5429 motionUpData.mY = contentY; 5430 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 5431 motionUpData); 5432 } else { 5433 doMotionUp(contentX, contentY); 5434 } 5435 } 5436 5437 private void doMotionUp(int contentX, int contentY) { 5438 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 5439 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 5440 } 5441 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 5442 playSoundEffect(SoundEffectConstants.CLICK); 5443 } 5444 } 5445 5446 // Rule for double tap: 5447 // 1. if the current scale is not same as the text wrap scale and layout 5448 // algorithm is NARROW_COLUMNS, fit to column; 5449 // 2. if the current state is not overview mode, change to overview mode; 5450 // 3. if the current state is overview mode, change to default scale. 5451 private void doDoubleTap() { 5452 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 5453 return; 5454 } 5455 mZoomCenterX = mLastTouchX; 5456 mZoomCenterY = mLastTouchY; 5457 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5458 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5459 WebSettings settings = getSettings(); 5460 // remove the zoom control after double tap 5461 if (settings.getBuiltInZoomControls()) { 5462 if (mZoomButtonsController.isVisible()) { 5463 mZoomButtonsController.setVisible(false); 5464 } 5465 } else { 5466 if (mZoomControlRunnable != null) { 5467 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5468 } 5469 if (mZoomControls != null) { 5470 mZoomControls.hide(); 5471 } 5472 } 5473 settings.setDoubleTapToastCount(0); 5474 boolean zoomToDefault = false; 5475 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 5476 && (Math.abs(mActualScale - mTextWrapScale) >= 0.01f)) { 5477 setNewZoomScale(mActualScale, true, true); 5478 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 5479 if (Math.abs(mActualScale - overviewScale) < 0.01f) { 5480 mInZoomOverview = true; 5481 } 5482 } else if (!mInZoomOverview) { 5483 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 5484 if (Math.abs(mActualScale - newScale) >= 0.01f) { 5485 mInZoomOverview = true; 5486 // Force the titlebar fully reveal in overview mode 5487 if (mScrollY < getTitleHeight()) mScrollY = 0; 5488 zoomWithPreview(newScale); 5489 } else if (Math.abs(mActualScale - mDefaultScale) >= 0.01f) { 5490 zoomToDefault = true; 5491 } 5492 } else { 5493 zoomToDefault = true; 5494 } 5495 if (zoomToDefault) { 5496 mInZoomOverview = false; 5497 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 5498 if (left != NO_LEFTEDGE) { 5499 // add a 5pt padding to the left edge. 5500 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 5501 - mScrollX; 5502 // Re-calculate the zoom center so that the new scroll x will be 5503 // on the left edge. 5504 if (viewLeft > 0) { 5505 mZoomCenterX = viewLeft * mDefaultScale 5506 / (mDefaultScale - mActualScale); 5507 } else { 5508 scrollBy(viewLeft, 0); 5509 mZoomCenterX = 0; 5510 } 5511 } 5512 zoomWithPreview(mDefaultScale); 5513 } 5514 } 5515 5516 // Called by JNI to handle a touch on a node representing an email address, 5517 // address, or phone number 5518 private void overrideLoading(String url) { 5519 mCallbackProxy.uiOverrideUrlLoading(url); 5520 } 5521 5522 @Override 5523 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 5524 boolean result = false; 5525 if (inEditingMode()) { 5526 result = mWebTextView.requestFocus(direction, 5527 previouslyFocusedRect); 5528 } else { 5529 result = super.requestFocus(direction, previouslyFocusedRect); 5530 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 5531 // For cases such as GMail, where we gain focus from a direction, 5532 // we want to move to the first available link. 5533 // FIXME: If there are no visible links, we may not want to 5534 int fakeKeyDirection = 0; 5535 switch(direction) { 5536 case View.FOCUS_UP: 5537 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 5538 break; 5539 case View.FOCUS_DOWN: 5540 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 5541 break; 5542 case View.FOCUS_LEFT: 5543 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 5544 break; 5545 case View.FOCUS_RIGHT: 5546 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 5547 break; 5548 default: 5549 return result; 5550 } 5551 if (mNativeClass != 0 && !nativeHasCursorNode()) { 5552 navHandledKey(fakeKeyDirection, 1, true, 0, true); 5553 } 5554 } 5555 } 5556 return result; 5557 } 5558 5559 @Override 5560 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5561 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 5562 5563 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5564 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5565 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5566 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5567 5568 int measuredHeight = heightSize; 5569 int measuredWidth = widthSize; 5570 5571 // Grab the content size from WebViewCore. 5572 int contentHeight = contentToViewDimension(mContentHeight); 5573 int contentWidth = contentToViewDimension(mContentWidth); 5574 5575// Log.d(LOGTAG, "------- measure " + heightMode); 5576 5577 if (heightMode != MeasureSpec.EXACTLY) { 5578 mHeightCanMeasure = true; 5579 measuredHeight = contentHeight; 5580 if (heightMode == MeasureSpec.AT_MOST) { 5581 // If we are larger than the AT_MOST height, then our height can 5582 // no longer be measured and we should scroll internally. 5583 if (measuredHeight > heightSize) { 5584 measuredHeight = heightSize; 5585 mHeightCanMeasure = false; 5586 } 5587 } 5588 } else { 5589 mHeightCanMeasure = false; 5590 } 5591 if (mNativeClass != 0) { 5592 nativeSetHeightCanMeasure(mHeightCanMeasure); 5593 } 5594 // For the width, always use the given size unless unspecified. 5595 if (widthMode == MeasureSpec.UNSPECIFIED) { 5596 mWidthCanMeasure = true; 5597 measuredWidth = contentWidth; 5598 } else { 5599 mWidthCanMeasure = false; 5600 } 5601 5602 synchronized (this) { 5603 setMeasuredDimension(measuredWidth, measuredHeight); 5604 } 5605 } 5606 5607 @Override 5608 public boolean requestChildRectangleOnScreen(View child, 5609 Rect rect, 5610 boolean immediate) { 5611 rect.offset(child.getLeft() - child.getScrollX(), 5612 child.getTop() - child.getScrollY()); 5613 5614 int height = getViewHeightWithTitle(); 5615 int screenTop = mScrollY; 5616 int screenBottom = screenTop + height; 5617 5618 int scrollYDelta = 0; 5619 5620 if (rect.bottom > screenBottom) { 5621 int oneThirdOfScreenHeight = height / 3; 5622 if (rect.height() > 2 * oneThirdOfScreenHeight) { 5623 // If the rectangle is too tall to fit in the bottom two thirds 5624 // of the screen, place it at the top. 5625 scrollYDelta = rect.top - screenTop; 5626 } else { 5627 // If the rectangle will still fit on screen, we want its 5628 // top to be in the top third of the screen. 5629 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 5630 } 5631 } else if (rect.top < screenTop) { 5632 scrollYDelta = rect.top - screenTop; 5633 } 5634 5635 int width = getWidth() - getVerticalScrollbarWidth(); 5636 int screenLeft = mScrollX; 5637 int screenRight = screenLeft + width; 5638 5639 int scrollXDelta = 0; 5640 5641 if (rect.right > screenRight && rect.left > screenLeft) { 5642 if (rect.width() > width) { 5643 scrollXDelta += (rect.left - screenLeft); 5644 } else { 5645 scrollXDelta += (rect.right - screenRight); 5646 } 5647 } else if (rect.left < screenLeft) { 5648 scrollXDelta -= (screenLeft - rect.left); 5649 } 5650 5651 if ((scrollYDelta | scrollXDelta) != 0) { 5652 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 5653 } 5654 5655 return false; 5656 } 5657 5658 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 5659 String replace, int newStart, int newEnd) { 5660 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 5661 arg.mReplace = replace; 5662 arg.mNewStart = newStart; 5663 arg.mNewEnd = newEnd; 5664 mTextGeneration++; 5665 arg.mTextGeneration = mTextGeneration; 5666 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 5667 } 5668 5669 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 5670 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 5671 arg.mEvent = event; 5672 arg.mCurrentText = currentText; 5673 // Increase our text generation number, and pass it to webcore thread 5674 mTextGeneration++; 5675 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 5676 // WebKit's document state is not saved until about to leave the page. 5677 // To make sure the host application, like Browser, has the up to date 5678 // document state when it goes to background, we force to save the 5679 // document state. 5680 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 5681 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 5682 cursorData(), 1000); 5683 } 5684 5685 /* package */ WebViewCore getWebViewCore() { 5686 return mWebViewCore; 5687 } 5688 5689 //------------------------------------------------------------------------- 5690 // Methods can be called from a separate thread, like WebViewCore 5691 // If it needs to call the View system, it has to send message. 5692 //------------------------------------------------------------------------- 5693 5694 /** 5695 * General handler to receive message coming from webkit thread 5696 */ 5697 class PrivateHandler extends Handler { 5698 @Override 5699 public void handleMessage(Message msg) { 5700 // exclude INVAL_RECT_MSG_ID since it is frequently output 5701 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 5702 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 5703 > FIND_AGAIN ? Integer.toString(msg.what) 5704 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 5705 } 5706 if (mWebViewCore == null) { 5707 // after WebView's destroy() is called, skip handling messages. 5708 return; 5709 } 5710 switch (msg.what) { 5711 case REMEMBER_PASSWORD: { 5712 mDatabase.setUsernamePassword( 5713 msg.getData().getString("host"), 5714 msg.getData().getString("username"), 5715 msg.getData().getString("password")); 5716 ((Message) msg.obj).sendToTarget(); 5717 break; 5718 } 5719 case NEVER_REMEMBER_PASSWORD: { 5720 mDatabase.setUsernamePassword( 5721 msg.getData().getString("host"), null, null); 5722 ((Message) msg.obj).sendToTarget(); 5723 break; 5724 } 5725 case SWITCH_TO_SHORTPRESS: { 5726 // if mPreventDrag is not confirmed, cancel it so that it 5727 // won't block panning the page. 5728 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5729 mPreventDrag = PREVENT_DRAG_CANCEL; 5730 mPreventLongPress = false; 5731 mPreventDoubleTap = false; 5732 // remove the pending TOUCH_EVENT and send a cancel 5733 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5734 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 5735 ted.mAction = MotionEvent.ACTION_CANCEL; 5736 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5737 } 5738 if (mTouchMode == TOUCH_INIT_MODE) { 5739 mTouchMode = mFullScreenHolder == null 5740 ? TOUCH_SHORTPRESS_START_MODE 5741 : TOUCH_SHORTPRESS_MODE; 5742 updateSelection(); 5743 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5744 mTouchMode = TOUCH_DONE_MODE; 5745 } 5746 break; 5747 } 5748 case SWITCH_TO_LONGPRESS: { 5749 if (mPreventLongPress) { 5750 mTouchMode = TOUCH_DONE_MODE; 5751 WebViewCore.TouchEventData ted 5752 = new WebViewCore.TouchEventData(); 5753 ted.mAction = WebViewCore.ACTION_LONGPRESS; 5754 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 5755 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 5756 ted.mEventTime = SystemClock.uptimeMillis(); 5757 // metaState for long press is tricky. Should it be the state 5758 // when the press started or when the press was released? Or 5759 // some intermediary key state? For simplicity for now, we 5760 // don't set it. 5761 ted.mMetaState = 0; 5762 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5763 } else if (mPreventDrag != PREVENT_DRAG_YES) { 5764 mTouchMode = TOUCH_DONE_MODE; 5765 if (mFullScreenHolder == null) { 5766 performLongClick(); 5767 rebuildWebTextView(); 5768 } 5769 } 5770 break; 5771 } 5772 case RELEASE_SINGLE_TAP: { 5773 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5774 // if mPreventDrag is not confirmed, cancel it so that 5775 // it won't block panning the page. 5776 mPreventDrag = PREVENT_DRAG_CANCEL; 5777 mPreventLongPress = false; 5778 mPreventDoubleTap = false; 5779 // remove the pending TOUCH_EVENT and send a cancel 5780 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5781 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 5782 ted.mAction = MotionEvent.ACTION_CANCEL; 5783 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5784 } 5785 if (mPreventDrag != PREVENT_DRAG_YES) { 5786 mTouchMode = TOUCH_DONE_MODE; 5787 doShortPress(); 5788 } 5789 break; 5790 } 5791 case SCROLL_BY_MSG_ID: 5792 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 5793 break; 5794 case SYNC_SCROLL_TO_MSG_ID: 5795 if (mUserScroll) { 5796 // if user has scrolled explicitly, don't sync the 5797 // scroll position any more 5798 mUserScroll = false; 5799 break; 5800 } 5801 // fall through 5802 case SCROLL_TO_MSG_ID: 5803 if (setContentScrollTo(msg.arg1, msg.arg2)) { 5804 // if we can't scroll to the exact position due to pin, 5805 // send a message to WebCore to re-scroll when we get a 5806 // new picture 5807 mUserScroll = false; 5808 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 5809 msg.arg1, msg.arg2); 5810 } 5811 break; 5812 case SPAWN_SCROLL_TO_MSG_ID: 5813 spawnContentScrollTo(msg.arg1, msg.arg2); 5814 break; 5815 case UPDATE_ZOOM_RANGE: { 5816 WebViewCore.RestoreState restoreState 5817 = (WebViewCore.RestoreState) msg.obj; 5818 // mScrollX contains the new minPrefWidth 5819 updateZoomRange(restoreState, getViewWidth(), 5820 restoreState.mScrollX, false); 5821 break; 5822 } 5823 case NEW_PICTURE_MSG_ID: { 5824 WebSettings settings = mWebViewCore.getSettings(); 5825 // called for new content 5826 final int viewWidth = getViewWidth(); 5827 final WebViewCore.DrawData draw = 5828 (WebViewCore.DrawData) msg.obj; 5829 final Point viewSize = draw.mViewPoint; 5830 boolean useWideViewport = settings.getUseWideViewPort(); 5831 WebViewCore.RestoreState restoreState = draw.mRestoreState; 5832 boolean hasRestoreState = restoreState != null; 5833 if (hasRestoreState) { 5834 mInZoomOverview = false; 5835 updateZoomRange(restoreState, viewSize.x, 5836 draw.mMinPrefWidth, true); 5837 if (mInitialScaleInPercent > 0) { 5838 setNewZoomScale(mInitialScaleInPercent / 100.0f, 5839 mInitialScaleInPercent != mTextWrapScale * 100, 5840 false); 5841 } else if (restoreState.mViewScale > 0) { 5842 mTextWrapScale = restoreState.mTextWrapScale; 5843 setNewZoomScale(restoreState.mViewScale, false, 5844 false); 5845 } else { 5846 mInZoomOverview = useWideViewport 5847 && settings.getLoadWithOverviewMode(); 5848 float scale; 5849 if (mInZoomOverview) { 5850 scale = (float) viewWidth 5851 / DEFAULT_VIEWPORT_WIDTH; 5852 } else { 5853 scale = restoreState.mTextWrapScale; 5854 } 5855 setNewZoomScale(scale, Math.abs(scale 5856 - mTextWrapScale) >= 0.01f, false); 5857 } 5858 setContentScrollTo(restoreState.mScrollX, 5859 restoreState.mScrollY); 5860 // As we are on a new page, remove the WebTextView. This 5861 // is necessary for page loads driven by webkit, and in 5862 // particular when the user was on a password field, so 5863 // the WebTextView was visible. 5864 clearTextEntry(false); 5865 // update the zoom buttons as the scale can be changed 5866 if (getSettings().getBuiltInZoomControls()) { 5867 updateZoomButtonsEnabled(); 5868 } 5869 } 5870 // We update the layout (i.e. request a layout from the 5871 // view system) if the last view size that we sent to 5872 // WebCore matches the view size of the picture we just 5873 // received in the fixed dimension. 5874 final boolean updateLayout = viewSize.x == mLastWidthSent 5875 && viewSize.y == mLastHeightSent; 5876 recordNewContentSize(draw.mWidthHeight.x, 5877 draw.mWidthHeight.y 5878 + (mFindIsUp ? mFindHeight : 0), updateLayout); 5879 if (DebugFlags.WEB_VIEW) { 5880 Rect b = draw.mInvalRegion.getBounds(); 5881 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 5882 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 5883 } 5884 invalidateContentRect(draw.mInvalRegion.getBounds()); 5885 if (mPictureListener != null) { 5886 mPictureListener.onNewPicture(WebView.this, capturePicture()); 5887 } 5888 if (useWideViewport) { 5889 // limit mZoomOverviewWidth upper bound to 5890 // sMaxViewportWidth so that if the page doesn't behave 5891 // well, the WebView won't go insane. limit the lower 5892 // bound to match the default scale for mobile sites. 5893 mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math 5894 .max((int) (viewWidth / mDefaultScale), Math 5895 .max(draw.mMinPrefWidth, 5896 draw.mViewPoint.x))); 5897 } 5898 if (!mMinZoomScaleFixed) { 5899 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 5900 } 5901 if (!mDrawHistory && mInZoomOverview) { 5902 // fit the content width to the current view. Ignore 5903 // the rounding error case. 5904 if (Math.abs((viewWidth * mInvActualScale) 5905 - mZoomOverviewWidth) > 1) { 5906 setNewZoomScale((float) viewWidth 5907 / mZoomOverviewWidth, Math.abs(mActualScale 5908 - mTextWrapScale) < 0.01f, false); 5909 } 5910 } 5911 if (draw.mFocusSizeChanged && inEditingMode()) { 5912 mFocusSizeChanged = true; 5913 } 5914 if (hasRestoreState) { 5915 mViewManager.postReadyToDrawAll(); 5916 } 5917 break; 5918 } 5919 case WEBCORE_INITIALIZED_MSG_ID: 5920 // nativeCreate sets mNativeClass to a non-zero value 5921 nativeCreate(msg.arg1); 5922 break; 5923 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 5924 // Make sure that the textfield is currently focused 5925 // and representing the same node as the pointer. 5926 if (inEditingMode() && 5927 mWebTextView.isSameTextField(msg.arg1)) { 5928 if (msg.getData().getBoolean("password")) { 5929 Spannable text = (Spannable) mWebTextView.getText(); 5930 int start = Selection.getSelectionStart(text); 5931 int end = Selection.getSelectionEnd(text); 5932 mWebTextView.setInPassword(true); 5933 // Restore the selection, which may have been 5934 // ruined by setInPassword. 5935 Spannable pword = 5936 (Spannable) mWebTextView.getText(); 5937 Selection.setSelection(pword, start, end); 5938 // If the text entry has created more events, ignore 5939 // this one. 5940 } else if (msg.arg2 == mTextGeneration) { 5941 mWebTextView.setTextAndKeepSelection( 5942 (String) msg.obj); 5943 } 5944 } 5945 break; 5946 case UPDATE_TEXT_SELECTION_MSG_ID: 5947 // If no textfield was in focus, and the user touched one, 5948 // causing it to send this message, then WebTextView has not 5949 // been set up yet. Rebuild it so it can set its selection. 5950 rebuildWebTextView(); 5951 if (inEditingMode() 5952 && mWebTextView.isSameTextField(msg.arg1) 5953 && msg.arg2 == mTextGeneration) { 5954 WebViewCore.TextSelectionData tData 5955 = (WebViewCore.TextSelectionData) msg.obj; 5956 mWebTextView.setSelectionFromWebKit(tData.mStart, 5957 tData.mEnd); 5958 } 5959 break; 5960 case RETURN_LABEL: 5961 if (inEditingMode() 5962 && mWebTextView.isSameTextField(msg.arg1)) { 5963 mWebTextView.setHint((String) msg.obj); 5964 InputMethodManager imm 5965 = InputMethodManager.peekInstance(); 5966 // The hint is propagated to the IME in 5967 // onCreateInputConnection. If the IME is already 5968 // active, restart it so that its hint text is updated. 5969 if (imm != null && imm.isActive(mWebTextView)) { 5970 imm.restartInput(mWebTextView); 5971 } 5972 } 5973 break; 5974 case MOVE_OUT_OF_PLUGIN: 5975 navHandledKey(msg.arg1, 1, false, 0, true); 5976 break; 5977 case UPDATE_TEXT_ENTRY_MSG_ID: 5978 // this is sent after finishing resize in WebViewCore. Make 5979 // sure the text edit box is still on the screen. 5980 if (inEditingMode() && nativeCursorIsTextInput()) { 5981 mWebTextView.bringIntoView(); 5982 rebuildWebTextView(); 5983 } 5984 break; 5985 case CLEAR_TEXT_ENTRY: 5986 clearTextEntry(false); 5987 break; 5988 case INVAL_RECT_MSG_ID: { 5989 Rect r = (Rect)msg.obj; 5990 if (r == null) { 5991 invalidate(); 5992 } else { 5993 // we need to scale r from content into view coords, 5994 // which viewInvalidate() does for us 5995 viewInvalidate(r.left, r.top, r.right, r.bottom); 5996 } 5997 break; 5998 } 5999 case IMMEDIATE_REPAINT_MSG_ID: { 6000 invalidate(); 6001 break; 6002 } 6003 case SET_ROOT_LAYER_MSG_ID: { 6004 int oldLayer = mRootLayer; 6005 mRootLayer = msg.arg1; 6006 nativeSetRootLayer(mRootLayer); 6007 if (oldLayer > 0) { 6008 nativeDestroyLayer(oldLayer); 6009 } 6010 invalidate(); 6011 break; 6012 } 6013 case REQUEST_FORM_DATA: 6014 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6015 if (mWebTextView.isSameTextField(msg.arg1)) { 6016 mWebTextView.setAdapterCustom(adapter); 6017 } 6018 break; 6019 case RESUME_WEBCORE_PRIORITY: 6020 WebViewCore.resumePriority(); 6021 break; 6022 6023 case LONG_PRESS_CENTER: 6024 // as this is shared by keydown and trackballdown, reset all 6025 // the states 6026 mGotCenterDown = false; 6027 mTrackballDown = false; 6028 performLongClick(); 6029 break; 6030 6031 case WEBCORE_NEED_TOUCH_EVENTS: 6032 mForwardTouchEvents = (msg.arg1 != 0); 6033 break; 6034 6035 case PREVENT_TOUCH_ID: 6036 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 6037 // dont override if mPreventDrag has been set to no due 6038 // to time out 6039 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 6040 mPreventDrag = (msg.arg2 & TOUCH_PREVENT_DRAG) 6041 == TOUCH_PREVENT_DRAG ? PREVENT_DRAG_YES 6042 : PREVENT_DRAG_NO; 6043 if (mPreventDrag == PREVENT_DRAG_YES) { 6044 mTouchMode = TOUCH_DONE_MODE; 6045 } else { 6046 mPreventLongPress = 6047 (msg.arg2 & TOUCH_PREVENT_LONGPRESS) 6048 == TOUCH_PREVENT_LONGPRESS; 6049 mPreventDoubleTap = 6050 (msg.arg2 & TOUCH_PREVENT_DOUBLETAP) 6051 == TOUCH_PREVENT_DOUBLETAP; 6052 } 6053 } 6054 } 6055 break; 6056 6057 case REQUEST_KEYBOARD: 6058 if (msg.arg1 == 0) { 6059 hideSoftKeyboard(); 6060 } else { 6061 displaySoftKeyboard(1 == msg.arg2); 6062 } 6063 break; 6064 6065 case FIND_AGAIN: 6066 // Ignore if find has been dismissed. 6067 if (mFindIsUp) { 6068 findAll(mLastFind); 6069 } 6070 break; 6071 6072 case DRAG_HELD_MOTIONLESS: 6073 mHeldMotionless = MOTIONLESS_TRUE; 6074 invalidate(); 6075 // fall through to keep scrollbars awake 6076 6077 case AWAKEN_SCROLL_BARS: 6078 if (mTouchMode == TOUCH_DRAG_MODE 6079 && mHeldMotionless == MOTIONLESS_TRUE) { 6080 awakenScrollBars(ViewConfiguration 6081 .getScrollDefaultDelay(), false); 6082 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6083 .obtainMessage(AWAKEN_SCROLL_BARS), 6084 ViewConfiguration.getScrollDefaultDelay()); 6085 } 6086 break; 6087 6088 case DO_MOTION_UP: 6089 doMotionUp(msg.arg1, msg.arg2); 6090 break; 6091 6092 case SHOW_FULLSCREEN: { 6093 WebViewCore.PluginFullScreenData data 6094 = (WebViewCore.PluginFullScreenData) msg.obj; 6095 if (data.mNpp != 0 && data.mView != null) { 6096 if (mFullScreenHolder != null) { 6097 Log.w(LOGTAG, 6098 "Should not have another full screen."); 6099 mFullScreenHolder.dismiss(); 6100 } 6101 mFullScreenHolder = new PluginFullScreenHolder( 6102 WebView.this, data.mNpp); 6103 // as we are sharing the View between full screen and 6104 // embedded mode, we have to remove the 6105 // AbsoluteLayout.LayoutParams set by embedded mode to 6106 // ViewGroup.LayoutParams before adding it to the dialog 6107 data.mView.setLayoutParams(new ViewGroup.LayoutParams( 6108 ViewGroup.LayoutParams.FILL_PARENT, 6109 ViewGroup.LayoutParams.FILL_PARENT)); 6110 mFullScreenHolder.setContentView(data.mView); 6111 mFullScreenHolder.setCancelable(false); 6112 mFullScreenHolder.setCanceledOnTouchOutside(false); 6113 mFullScreenHolder.show(); 6114 } else if (mFullScreenHolder == null) { 6115 // this may happen if user dismisses the fullscreen and 6116 // then the WebCore re-position message finally reached 6117 // the UI thread. 6118 break; 6119 } 6120 // move the matching embedded view fully into the view so 6121 // that touch will be valid instead of rejected due to out 6122 // of the visible bounds 6123 // TODO: do we need to preserve the original position and 6124 // scale so that we can revert it when leaving the full 6125 // screen mode? 6126 int x = contentToViewX(data.mDocX); 6127 int y = contentToViewY(data.mDocY); 6128 int width = contentToViewDimension(data.mDocWidth); 6129 int height = contentToViewDimension(data.mDocHeight); 6130 int viewWidth = getViewWidth(); 6131 int viewHeight = getViewHeight(); 6132 int newX = mScrollX; 6133 int newY = mScrollY; 6134 if (x < mScrollX) { 6135 newX = x + (width > viewWidth 6136 ? (width - viewWidth) / 2 : 0); 6137 } else if (x + width > mScrollX + viewWidth) { 6138 newX = x + width - viewWidth - (width > viewWidth 6139 ? (width - viewWidth) / 2 : 0); 6140 } 6141 if (y < mScrollY) { 6142 newY = y + (height > viewHeight 6143 ? (height - viewHeight) / 2 : 0); 6144 } else if (y + height > mScrollY + viewHeight) { 6145 newY = y + height - viewHeight - (height > viewHeight 6146 ? (height - viewHeight) / 2 : 0); 6147 } 6148 scrollTo(newX, newY); 6149 if (width > viewWidth || height > viewHeight) { 6150 mZoomCenterX = viewWidth * .5f; 6151 mZoomCenterY = viewHeight * .5f; 6152 // do not change text wrap scale so that there is no 6153 // reflow 6154 setNewZoomScale(mActualScale 6155 / Math.max((float) width / viewWidth, 6156 (float) height / viewHeight), false, 6157 false); 6158 } 6159 // Now update the bound 6160 mFullScreenHolder.updateBound(contentToViewX(data.mDocX) 6161 - mScrollX, contentToViewY(data.mDocY) - mScrollY, 6162 contentToViewDimension(data.mDocWidth), 6163 contentToViewDimension(data.mDocHeight)); 6164 } 6165 break; 6166 6167 case HIDE_FULLSCREEN: 6168 if (mFullScreenHolder != null) { 6169 mFullScreenHolder.dismiss(); 6170 mFullScreenHolder = null; 6171 } 6172 break; 6173 6174 case DOM_FOCUS_CHANGED: 6175 if (inEditingMode()) { 6176 nativeClearCursor(); 6177 rebuildWebTextView(); 6178 } 6179 break; 6180 6181 case SHOW_RECT_MSG_ID: { 6182 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6183 int x = mScrollX; 6184 int left = contentToViewX(data.mLeft); 6185 int width = contentToViewDimension(data.mWidth); 6186 int maxWidth = contentToViewDimension(data.mContentWidth); 6187 int viewWidth = getViewWidth(); 6188 if (width < viewWidth) { 6189 // center align 6190 x += left + width / 2 - mScrollX - viewWidth / 2; 6191 } else { 6192 x += (int) (left + data.mXPercentInDoc * width 6193 - mScrollX - data.mXPercentInView * viewWidth); 6194 } 6195 if (DebugFlags.WEB_VIEW) { 6196 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6197 width + ",maxWidth=" + maxWidth + 6198 ",viewWidth=" + viewWidth + ",x=" 6199 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6200 ",xPercentInView=" + data.mXPercentInView+ ")"); 6201 } 6202 // use the passing content width to cap x as the current 6203 // mContentWidth may not be updated yet 6204 x = Math.max(0, 6205 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6206 int top = contentToViewY(data.mTop); 6207 int height = contentToViewDimension(data.mHeight); 6208 int maxHeight = contentToViewDimension(data.mContentHeight); 6209 int viewHeight = getViewHeight(); 6210 int y = (int) (top + data.mYPercentInDoc * height - 6211 data.mYPercentInView * viewHeight); 6212 if (DebugFlags.WEB_VIEW) { 6213 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6214 height + ",maxHeight=" + maxHeight + 6215 ",viewHeight=" + viewHeight + ",y=" 6216 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6217 ",yPercentInView=" + data.mYPercentInView+ ")"); 6218 } 6219 // use the passing content height to cap y as the current 6220 // mContentHeight may not be updated yet 6221 y = Math.max(0, 6222 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6223 // We need to take into account the visible title height 6224 // when scrolling since y is an absolute view position. 6225 y = Math.max(0, y - getVisibleTitleHeight()); 6226 scrollTo(x, y); 6227 } 6228 break; 6229 6230 default: 6231 super.handleMessage(msg); 6232 break; 6233 } 6234 } 6235 } 6236 6237 // Class used to use a dropdown for a <select> element 6238 private class InvokeListBox implements Runnable { 6239 // Whether the listbox allows multiple selection. 6240 private boolean mMultiple; 6241 // Passed in to a list with multiple selection to tell 6242 // which items are selected. 6243 private int[] mSelectedArray; 6244 // Passed in to a list with single selection to tell 6245 // where the initial selection is. 6246 private int mSelection; 6247 6248 private Container[] mContainers; 6249 6250 // Need these to provide stable ids to my ArrayAdapter, 6251 // which normally does not have stable ids. (Bug 1250098) 6252 private class Container extends Object { 6253 /** 6254 * Possible values for mEnabled. Keep in sync with OptionStatus in 6255 * WebViewCore.cpp 6256 */ 6257 final static int OPTGROUP = -1; 6258 final static int OPTION_DISABLED = 0; 6259 final static int OPTION_ENABLED = 1; 6260 6261 String mString; 6262 int mEnabled; 6263 int mId; 6264 6265 public String toString() { 6266 return mString; 6267 } 6268 } 6269 6270 /** 6271 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6272 * and allow filtering. 6273 */ 6274 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6275 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6276 super(context, 6277 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6278 com.android.internal.R.layout.select_dialog_singlechoice, 6279 objects); 6280 } 6281 6282 @Override 6283 public View getView(int position, View convertView, 6284 ViewGroup parent) { 6285 // Always pass in null so that we will get a new CheckedTextView 6286 // Otherwise, an item which was previously used as an <optgroup> 6287 // element (i.e. has no check), could get used as an <option> 6288 // element, which needs a checkbox/radio, but it would not have 6289 // one. 6290 convertView = super.getView(position, null, parent); 6291 Container c = item(position); 6292 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6293 // ListView does not draw dividers between disabled and 6294 // enabled elements. Use a LinearLayout to provide dividers 6295 LinearLayout layout = new LinearLayout(mContext); 6296 layout.setOrientation(LinearLayout.VERTICAL); 6297 if (position > 0) { 6298 View dividerTop = new View(mContext); 6299 dividerTop.setBackgroundResource( 6300 android.R.drawable.divider_horizontal_bright); 6301 layout.addView(dividerTop); 6302 } 6303 6304 if (Container.OPTGROUP == c.mEnabled) { 6305 // Currently select_dialog_multichoice and 6306 // select_dialog_singlechoice are CheckedTextViews. If 6307 // that changes, the class cast will no longer be valid. 6308 Assert.assertTrue( 6309 convertView instanceof CheckedTextView); 6310 ((CheckedTextView) convertView).setCheckMarkDrawable( 6311 null); 6312 } else { 6313 // c.mEnabled == Container.OPTION_DISABLED 6314 // Draw the disabled element in a disabled state. 6315 convertView.setEnabled(false); 6316 } 6317 6318 layout.addView(convertView); 6319 if (position < getCount() - 1) { 6320 View dividerBottom = new View(mContext); 6321 dividerBottom.setBackgroundResource( 6322 android.R.drawable.divider_horizontal_bright); 6323 layout.addView(dividerBottom); 6324 } 6325 return layout; 6326 } 6327 return convertView; 6328 } 6329 6330 @Override 6331 public boolean hasStableIds() { 6332 // AdapterView's onChanged method uses this to determine whether 6333 // to restore the old state. Return false so that the old (out 6334 // of date) state does not replace the new, valid state. 6335 return false; 6336 } 6337 6338 private Container item(int position) { 6339 if (position < 0 || position >= getCount()) { 6340 return null; 6341 } 6342 return (Container) getItem(position); 6343 } 6344 6345 @Override 6346 public long getItemId(int position) { 6347 Container item = item(position); 6348 if (item == null) { 6349 return -1; 6350 } 6351 return item.mId; 6352 } 6353 6354 @Override 6355 public boolean areAllItemsEnabled() { 6356 return false; 6357 } 6358 6359 @Override 6360 public boolean isEnabled(int position) { 6361 Container item = item(position); 6362 if (item == null) { 6363 return false; 6364 } 6365 return Container.OPTION_ENABLED == item.mEnabled; 6366 } 6367 } 6368 6369 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 6370 mMultiple = true; 6371 mSelectedArray = selected; 6372 6373 int length = array.length; 6374 mContainers = new Container[length]; 6375 for (int i = 0; i < length; i++) { 6376 mContainers[i] = new Container(); 6377 mContainers[i].mString = array[i]; 6378 mContainers[i].mEnabled = enabled[i]; 6379 mContainers[i].mId = i; 6380 } 6381 } 6382 6383 private InvokeListBox(String[] array, int[] enabled, int selection) { 6384 mSelection = selection; 6385 mMultiple = false; 6386 6387 int length = array.length; 6388 mContainers = new Container[length]; 6389 for (int i = 0; i < length; i++) { 6390 mContainers[i] = new Container(); 6391 mContainers[i].mString = array[i]; 6392 mContainers[i].mEnabled = enabled[i]; 6393 mContainers[i].mId = i; 6394 } 6395 } 6396 6397 /* 6398 * Whenever the data set changes due to filtering, this class ensures 6399 * that the checked item remains checked. 6400 */ 6401 private class SingleDataSetObserver extends DataSetObserver { 6402 private long mCheckedId; 6403 private ListView mListView; 6404 private Adapter mAdapter; 6405 6406 /* 6407 * Create a new observer. 6408 * @param id The ID of the item to keep checked. 6409 * @param l ListView for getting and clearing the checked states 6410 * @param a Adapter for getting the IDs 6411 */ 6412 public SingleDataSetObserver(long id, ListView l, Adapter a) { 6413 mCheckedId = id; 6414 mListView = l; 6415 mAdapter = a; 6416 } 6417 6418 public void onChanged() { 6419 // The filter may have changed which item is checked. Find the 6420 // item that the ListView thinks is checked. 6421 int position = mListView.getCheckedItemPosition(); 6422 long id = mAdapter.getItemId(position); 6423 if (mCheckedId != id) { 6424 // Clear the ListView's idea of the checked item, since 6425 // it is incorrect 6426 mListView.clearChoices(); 6427 // Search for mCheckedId. If it is in the filtered list, 6428 // mark it as checked 6429 int count = mAdapter.getCount(); 6430 for (int i = 0; i < count; i++) { 6431 if (mAdapter.getItemId(i) == mCheckedId) { 6432 mListView.setItemChecked(i, true); 6433 break; 6434 } 6435 } 6436 } 6437 } 6438 6439 public void onInvalidate() {} 6440 } 6441 6442 public void run() { 6443 final ListView listView = (ListView) LayoutInflater.from(mContext) 6444 .inflate(com.android.internal.R.layout.select_dialog, null); 6445 final MyArrayListAdapter adapter = new 6446 MyArrayListAdapter(mContext, mContainers, mMultiple); 6447 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 6448 .setView(listView).setCancelable(true) 6449 .setInverseBackgroundForced(true); 6450 6451 if (mMultiple) { 6452 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 6453 public void onClick(DialogInterface dialog, int which) { 6454 mWebViewCore.sendMessage( 6455 EventHub.LISTBOX_CHOICES, 6456 adapter.getCount(), 0, 6457 listView.getCheckedItemPositions()); 6458 }}); 6459 b.setNegativeButton(android.R.string.cancel, 6460 new DialogInterface.OnClickListener() { 6461 public void onClick(DialogInterface dialog, int which) { 6462 mWebViewCore.sendMessage( 6463 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6464 }}); 6465 } 6466 final AlertDialog dialog = b.create(); 6467 listView.setAdapter(adapter); 6468 listView.setFocusableInTouchMode(true); 6469 // There is a bug (1250103) where the checks in a ListView with 6470 // multiple items selected are associated with the positions, not 6471 // the ids, so the items do not properly retain their checks when 6472 // filtered. Do not allow filtering on multiple lists until 6473 // that bug is fixed. 6474 6475 listView.setTextFilterEnabled(!mMultiple); 6476 if (mMultiple) { 6477 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 6478 int length = mSelectedArray.length; 6479 for (int i = 0; i < length; i++) { 6480 listView.setItemChecked(mSelectedArray[i], true); 6481 } 6482 } else { 6483 listView.setOnItemClickListener(new OnItemClickListener() { 6484 public void onItemClick(AdapterView parent, View v, 6485 int position, long id) { 6486 mWebViewCore.sendMessage( 6487 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 6488 dialog.dismiss(); 6489 } 6490 }); 6491 if (mSelection != -1) { 6492 listView.setSelection(mSelection); 6493 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 6494 listView.setItemChecked(mSelection, true); 6495 DataSetObserver observer = new SingleDataSetObserver( 6496 adapter.getItemId(mSelection), listView, adapter); 6497 adapter.registerDataSetObserver(observer); 6498 } 6499 } 6500 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 6501 public void onCancel(DialogInterface dialog) { 6502 mWebViewCore.sendMessage( 6503 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6504 } 6505 }); 6506 dialog.show(); 6507 } 6508 } 6509 6510 /* 6511 * Request a dropdown menu for a listbox with multiple selection. 6512 * 6513 * @param array Labels for the listbox. 6514 * @param enabledArray State for each element in the list. See static 6515 * integers in Container class. 6516 * @param selectedArray Which positions are initally selected. 6517 */ 6518 void requestListBox(String[] array, int[] enabledArray, int[] 6519 selectedArray) { 6520 mPrivateHandler.post( 6521 new InvokeListBox(array, enabledArray, selectedArray)); 6522 } 6523 6524 private void updateZoomRange(WebViewCore.RestoreState restoreState, 6525 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 6526 if (restoreState.mMinScale == 0) { 6527 if (restoreState.mMobileSite) { 6528 if (minPrefWidth > Math.max(0, viewWidth)) { 6529 mMinZoomScale = (float) viewWidth / minPrefWidth; 6530 mMinZoomScaleFixed = false; 6531 if (updateZoomOverview) { 6532 WebSettings settings = getSettings(); 6533 mInZoomOverview = settings.getUseWideViewPort() && 6534 settings.getLoadWithOverviewMode(); 6535 } 6536 } else { 6537 mMinZoomScale = restoreState.mDefaultScale; 6538 mMinZoomScaleFixed = true; 6539 } 6540 } else { 6541 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 6542 mMinZoomScaleFixed = false; 6543 } 6544 } else { 6545 mMinZoomScale = restoreState.mMinScale; 6546 mMinZoomScaleFixed = true; 6547 } 6548 if (restoreState.mMaxScale == 0) { 6549 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 6550 } else { 6551 mMaxZoomScale = restoreState.mMaxScale; 6552 } 6553 } 6554 6555 /* 6556 * Request a dropdown menu for a listbox with single selection or a single 6557 * <select> element. 6558 * 6559 * @param array Labels for the listbox. 6560 * @param enabledArray State for each element in the list. See static 6561 * integers in Container class. 6562 * @param selection Which position is initally selected. 6563 */ 6564 void requestListBox(String[] array, int[] enabledArray, int selection) { 6565 mPrivateHandler.post( 6566 new InvokeListBox(array, enabledArray, selection)); 6567 } 6568 6569 // called by JNI 6570 private void sendMoveFocus(int frame, int node) { 6571 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 6572 new WebViewCore.CursorData(frame, node, 0, 0)); 6573 } 6574 6575 // called by JNI 6576 private void sendMoveMouse(int frame, int node, int x, int y) { 6577 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 6578 new WebViewCore.CursorData(frame, node, x, y)); 6579 } 6580 6581 /* 6582 * Send a mouse move event to the webcore thread. 6583 * 6584 * @param removeFocus Pass true if the "mouse" cursor is now over a node 6585 * which wants key events, but it is not the focus. This 6586 * will make the visual appear as though nothing is in 6587 * focus. Remove the WebTextView, if present, and stop 6588 * drawing the blinking caret. 6589 * called by JNI 6590 */ 6591 private void sendMoveMouseIfLatest(boolean removeFocus) { 6592 if (removeFocus) { 6593 clearTextEntry(true); 6594 } 6595 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 6596 cursorData()); 6597 } 6598 6599 // called by JNI 6600 private void sendMotionUp(int touchGeneration, 6601 int frame, int node, int x, int y) { 6602 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6603 touchUpData.mMoveGeneration = touchGeneration; 6604 touchUpData.mFrame = frame; 6605 touchUpData.mNode = node; 6606 touchUpData.mX = x; 6607 touchUpData.mY = y; 6608 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6609 } 6610 6611 6612 private int getScaledMaxXScroll() { 6613 int width; 6614 if (mHeightCanMeasure == false) { 6615 width = getViewWidth() / 4; 6616 } else { 6617 Rect visRect = new Rect(); 6618 calcOurVisibleRect(visRect); 6619 width = visRect.width() / 2; 6620 } 6621 // FIXME the divisor should be retrieved from somewhere 6622 return viewToContentX(width); 6623 } 6624 6625 private int getScaledMaxYScroll() { 6626 int height; 6627 if (mHeightCanMeasure == false) { 6628 height = getViewHeight() / 4; 6629 } else { 6630 Rect visRect = new Rect(); 6631 calcOurVisibleRect(visRect); 6632 height = visRect.height() / 2; 6633 } 6634 // FIXME the divisor should be retrieved from somewhere 6635 // the closest thing today is hard-coded into ScrollView.java 6636 // (from ScrollView.java, line 363) int maxJump = height/2; 6637 return Math.round(height * mInvActualScale); 6638 } 6639 6640 /** 6641 * Called by JNI to invalidate view 6642 */ 6643 private void viewInvalidate() { 6644 invalidate(); 6645 } 6646 6647 // return true if the key was handled 6648 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 6649 long time, boolean ignorePlugin) { 6650 if (mNativeClass == 0) { 6651 return false; 6652 } 6653 if (ignorePlugin == false && nativeFocusIsPlugin()) { 6654 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 6655 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 6656 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 6657 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 6658 , 0, 0, 0); 6659 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 6660 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 6661 return true; 6662 } 6663 mLastCursorTime = time; 6664 mLastCursorBounds = nativeGetCursorRingBounds(); 6665 boolean keyHandled 6666 = nativeMoveCursor(keyCode, count, noScroll) == false; 6667 if (DebugFlags.WEB_VIEW) { 6668 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 6669 + " mLastCursorTime=" + mLastCursorTime 6670 + " handled=" + keyHandled); 6671 } 6672 if (keyHandled == false || mHeightCanMeasure == false) { 6673 return keyHandled; 6674 } 6675 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 6676 if (contentCursorRingBounds.isEmpty()) return keyHandled; 6677 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 6678 Rect visRect = new Rect(); 6679 calcOurVisibleRect(visRect); 6680 Rect outset = new Rect(visRect); 6681 int maxXScroll = visRect.width() / 2; 6682 int maxYScroll = visRect.height() / 2; 6683 outset.inset(-maxXScroll, -maxYScroll); 6684 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 6685 return keyHandled; 6686 } 6687 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 6688 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 6689 maxXScroll); 6690 if (maxH > 0) { 6691 pinScrollBy(maxH, 0, true, 0); 6692 } else { 6693 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 6694 -maxXScroll); 6695 if (maxH < 0) { 6696 pinScrollBy(maxH, 0, true, 0); 6697 } 6698 } 6699 if (mLastCursorBounds.isEmpty()) return keyHandled; 6700 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 6701 return keyHandled; 6702 } 6703 if (DebugFlags.WEB_VIEW) { 6704 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 6705 + contentCursorRingBounds); 6706 } 6707 requestRectangleOnScreen(viewCursorRingBounds); 6708 mUserScroll = true; 6709 return keyHandled; 6710 } 6711 6712 /** 6713 * Set the background color. It's white by default. Pass 6714 * zero to make the view transparent. 6715 * @param color the ARGB color described by Color.java 6716 */ 6717 public void setBackgroundColor(int color) { 6718 mBackgroundColor = color; 6719 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 6720 } 6721 6722 public void debugDump() { 6723 nativeDebugDump(); 6724 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 6725 } 6726 6727 /** 6728 * Draw the HTML page into the specified canvas. This call ignores any 6729 * view-specific zoom, scroll offset, or other changes. It does not draw 6730 * any view-specific chrome, such as progress or URL bars. 6731 * 6732 * @hide only needs to be accessible to Browser and testing 6733 */ 6734 public void drawPage(Canvas canvas) { 6735 mWebViewCore.drawContentPicture(canvas, 0, false, false); 6736 } 6737 6738 /** 6739 * Set the time to wait between passing touches to WebCore. See also the 6740 * TOUCH_SENT_INTERVAL member for further discussion. 6741 * 6742 * @hide This is only used by the DRT test application. 6743 */ 6744 public void setTouchInterval(int interval) { 6745 mCurrentTouchInterval = interval; 6746 } 6747 6748 /** 6749 * Update our cache with updatedText. 6750 * @param updatedText The new text to put in our cache. 6751 */ 6752 /* package */ void updateCachedTextfield(String updatedText) { 6753 // Also place our generation number so that when we look at the cache 6754 // we recognize that it is up to date. 6755 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 6756 } 6757 6758 private native int nativeCacheHitFramePointer(); 6759 private native Rect nativeCacheHitNodeBounds(); 6760 private native int nativeCacheHitNodePointer(); 6761 /* package */ native void nativeClearCursor(); 6762 private native void nativeCreate(int ptr); 6763 private native int nativeCursorFramePointer(); 6764 private native Rect nativeCursorNodeBounds(); 6765 private native int nativeCursorNodePointer(); 6766 /* package */ native boolean nativeCursorMatchesFocus(); 6767 private native boolean nativeCursorIntersects(Rect visibleRect); 6768 private native boolean nativeCursorIsAnchor(); 6769 private native boolean nativeCursorIsInLayer(); 6770 private native boolean nativeCursorIsTextInput(); 6771 private native Point nativeCursorPosition(); 6772 private native String nativeCursorText(); 6773 /** 6774 * Returns true if the native cursor node says it wants to handle key events 6775 * (ala plugins). This can only be called if mNativeClass is non-zero! 6776 */ 6777 private native boolean nativeCursorWantsKeyEvents(); 6778 private native void nativeDebugDump(); 6779 private native void nativeDestroy(); 6780 private native void nativeDrawCursorRing(Canvas content); 6781 private native void nativeDestroyLayer(int layer); 6782 private native boolean nativeEvaluateLayersAnimations(int layer); 6783 private native void nativeDrawLayers(int layer, Canvas canvas); 6784 private native void nativeDrawMatches(Canvas canvas); 6785 private native void nativeDrawSelectionPointer(Canvas content, 6786 float scale, int x, int y, boolean extendSelection); 6787 private native void nativeDrawSelectionRegion(Canvas content); 6788 private native void nativeDumpDisplayTree(String urlOrNull); 6789 private native int nativeFindAll(String findLower, String findUpper); 6790 private native void nativeFindNext(boolean forward); 6791 /* package */ native int nativeFocusCandidateFramePointer(); 6792 private native boolean nativeFocusCandidateIsPassword(); 6793 private native boolean nativeFocusCandidateIsRtlText(); 6794 private native boolean nativeFocusCandidateIsTextInput(); 6795 /* package */ native int nativeFocusCandidateMaxLength(); 6796 /* package */ native String nativeFocusCandidateName(); 6797 private native Rect nativeFocusCandidateNodeBounds(); 6798 private native int nativeFocusCandidatePointer(); 6799 private native String nativeFocusCandidateText(); 6800 private native int nativeFocusCandidateTextSize(); 6801 /** 6802 * Returns an integer corresponding to WebView.cpp::type. 6803 * See WebTextView.setType() 6804 */ 6805 private native int nativeFocusCandidateType(); 6806 private native boolean nativeFocusIsPlugin(); 6807 /* package */ native int nativeFocusNodePointer(); 6808 private native Rect nativeGetCursorRingBounds(); 6809 private native String nativeGetSelection(); 6810 private native boolean nativeHasCursorNode(); 6811 private native boolean nativeHasFocusNode(); 6812 private native void nativeHideCursor(); 6813 private native String nativeImageURI(int x, int y); 6814 private native void nativeInstrumentReport(); 6815 /* package */ native void nativeMoveCursorToNextTextInput(); 6816 // return true if the page has been scrolled 6817 private native boolean nativeMotionUp(int x, int y, int slop); 6818 // returns false if it handled the key 6819 private native boolean nativeMoveCursor(int keyCode, int count, 6820 boolean noScroll); 6821 private native int nativeMoveGeneration(); 6822 private native void nativeMoveSelection(int x, int y, 6823 boolean extendSelection); 6824 private native boolean nativePointInNavCache(int x, int y, int slop); 6825 // Like many other of our native methods, you must make sure that 6826 // mNativeClass is not null before calling this method. 6827 private native void nativeRecordButtons(boolean focused, 6828 boolean pressed, boolean invalidate); 6829 private native void nativeSelectBestAt(Rect rect); 6830 private native void nativeSetFindIsUp(); 6831 private native void nativeSetFollowedLink(boolean followed); 6832 private native void nativeSetHeightCanMeasure(boolean measure); 6833 private native void nativeSetRootLayer(int layer); 6834 private native int nativeTextGeneration(); 6835 // Never call this version except by updateCachedTextfield(String) - 6836 // we always want to pass in our generation number. 6837 private native void nativeUpdateCachedTextfield(String updatedText, 6838 int generation); 6839 // return NO_LEFTEDGE means failure. 6840 private static final int NO_LEFTEDGE = -1; 6841 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 6842} 6843