WebView.java revision 0b2e84b32af48f4b2b17c72adcf12ad29ec7bb7a
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; 216 217 static final String LOGTAG = "webview"; 218 219 private static class ExtendedZoomControls extends FrameLayout { 220 public ExtendedZoomControls(Context context, AttributeSet attrs) { 221 super(context, attrs); 222 LayoutInflater inflater = (LayoutInflater) 223 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 224 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 225 mPlusMinusZoomControls = (ZoomControls) findViewById( 226 com.android.internal.R.id.zoomControls); 227 findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( 228 View.GONE); 229 } 230 231 public void show(boolean showZoom, boolean canZoomOut) { 232 mPlusMinusZoomControls.setVisibility( 233 showZoom ? View.VISIBLE : View.GONE); 234 fade(View.VISIBLE, 0.0f, 1.0f); 235 } 236 237 public void hide() { 238 fade(View.GONE, 1.0f, 0.0f); 239 } 240 241 private void fade(int visibility, float startAlpha, float endAlpha) { 242 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 243 anim.setDuration(500); 244 startAnimation(anim); 245 setVisibility(visibility); 246 } 247 248 public boolean hasFocus() { 249 return mPlusMinusZoomControls.hasFocus(); 250 } 251 252 public void setOnZoomInClickListener(OnClickListener listener) { 253 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 254 } 255 256 public void setOnZoomOutClickListener(OnClickListener listener) { 257 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 258 } 259 260 ZoomControls mPlusMinusZoomControls; 261 } 262 263 /** 264 * Transportation object for returning WebView across thread boundaries. 265 */ 266 public class WebViewTransport { 267 private WebView mWebview; 268 269 /** 270 * Set the WebView to the transportation object. 271 * @param webview The WebView to transport. 272 */ 273 public synchronized void setWebView(WebView webview) { 274 mWebview = webview; 275 } 276 277 /** 278 * Return the WebView object. 279 * @return WebView The transported WebView object. 280 */ 281 public synchronized WebView getWebView() { 282 return mWebview; 283 } 284 } 285 286 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 287 private final CallbackProxy mCallbackProxy; 288 289 private final WebViewDatabase mDatabase; 290 291 // SSL certificate for the main top-level page (if secure) 292 private SslCertificate mCertificate; 293 294 // Native WebView pointer that is 0 until the native object has been 295 // created. 296 private int mNativeClass; 297 // This would be final but it needs to be set to null when the WebView is 298 // destroyed. 299 private WebViewCore mWebViewCore; 300 // Handler for dispatching UI messages. 301 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 302 private WebTextView mWebTextView; 303 // Used to ignore changes to webkit text that arrives to the UI side after 304 // more key events. 305 private int mTextGeneration; 306 307 // Used by WebViewCore to create child views. 308 /* package */ final ViewManager mViewManager; 309 310 // Used to display in full screen mode 311 PluginFullScreenHolder mFullScreenHolder; 312 313 /** 314 * Position of the last touch event. 315 */ 316 private float mLastTouchX; 317 private float mLastTouchY; 318 319 /** 320 * Time of the last touch event. 321 */ 322 private long mLastTouchTime; 323 324 /** 325 * Time of the last time sending touch event to WebViewCore 326 */ 327 private long mLastSentTouchTime; 328 329 /** 330 * The minimum elapsed time before sending another ACTION_MOVE event to 331 * WebViewCore. This really should be tuned for each type of the devices. 332 * For example in Google Map api test case, it takes Dream device at least 333 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 334 * triggering the layout and drawing the picture. While the same process 335 * takes 60+ms on the current high speed device. If we make 336 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 337 * to WebViewCore queue and the real layout and draw events will be pushed 338 * to further, which slows down the refresh rate. Choose 50 to favor the 339 * current high speed devices. For Dream like devices, 100 is a better 340 * choice. Maybe make this in the buildspec later. 341 */ 342 private static final int TOUCH_SENT_INTERVAL = 50; 343 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 344 345 /** 346 * Helper class to get velocity for fling 347 */ 348 VelocityTracker mVelocityTracker; 349 private int mMaximumFling; 350 private float mLastVelocity; 351 private float mLastVelX; 352 private float mLastVelY; 353 354 /** 355 * Touch mode 356 */ 357 private int mTouchMode = TOUCH_DONE_MODE; 358 private static final int TOUCH_INIT_MODE = 1; 359 private static final int TOUCH_DRAG_START_MODE = 2; 360 private static final int TOUCH_DRAG_MODE = 3; 361 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 362 private static final int TOUCH_SHORTPRESS_MODE = 5; 363 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 364 private static final int TOUCH_DONE_MODE = 7; 365 private static final int TOUCH_SELECT_MODE = 8; 366 private static final int TOUCH_PINCH_DRAG = 9; 367 368 // Whether to forward the touch events to WebCore 369 private boolean mForwardTouchEvents = false; 370 371 // Whether to prevent drag during touch. The initial value depends on 372 // mForwardTouchEvents. If WebCore wants touch events, we assume it will 373 // take control of touch events unless it says no for touch down event. 374 private static final int PREVENT_DRAG_NO = 0; 375 private static final int PREVENT_DRAG_MAYBE_YES = 1; 376 private static final int PREVENT_DRAG_YES = 2; 377 private static final int PREVENT_DRAG_CANCEL = 3; 378 private int mPreventDrag = PREVENT_DRAG_NO; 379 380 // by default mPreventLongPress is false. If it is true, long press event 381 // will be handled by WebKit instead of UI. 382 private boolean mPreventLongPress = false; 383 // by default mPreventDoubleTap is false. If it is true, double tap event 384 // will be handled by WebKit instead of UI. 385 private boolean mPreventDoubleTap = false; 386 387 // this needs to be in sync with the logic in WebKit's 388 // EventHandler::handleTouchEvent() 389 private static final int TOUCH_PREVENT_DRAG = 0x1; 390 private static final int TOUCH_PREVENT_LONGPRESS = 0x2; 391 private static final int TOUCH_PREVENT_DOUBLETAP = 0x4; 392 393 // To keep track of whether the current drag was initiated by a WebTextView, 394 // so that we know not to hide the cursor 395 boolean mDragFromTextInput; 396 397 // Whether or not to draw the cursor ring. 398 private boolean mDrawCursorRing = true; 399 400 // true if onPause has been called (and not onResume) 401 private boolean mIsPaused; 402 403 /** 404 * Customizable constant 405 */ 406 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 407 private int mTouchSlopSquare; 408 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 409 private int mDoubleTapSlopSquare; 410 // pre-computed density adjusted navigation slop 411 private int mNavSlop; 412 // This should be ViewConfiguration.getTapTimeout() 413 // But system time out is 100ms, which is too short for the browser. 414 // In the browser, if it switches out of tap too soon, jump tap won't work. 415 private static final int TAP_TIMEOUT = 200; 416 // This should be ViewConfiguration.getLongPressTimeout() 417 // But system time out is 500ms, which is too short for the browser. 418 // With a short timeout, it's difficult to treat trigger a short press. 419 private static final int LONG_PRESS_TIMEOUT = 1000; 420 // needed to avoid flinging after a pause of no movement 421 private static final int MIN_FLING_TIME = 250; 422 // draw unfiltered after drag is held without movement 423 private static final int MOTIONLESS_TIME = 100; 424 // The time that the Zoom Controls are visible before fading away 425 private static final long ZOOM_CONTROLS_TIMEOUT = 426 ViewConfiguration.getZoomControlsTimeout(); 427 // The amount of content to overlap between two screens when going through 428 // pages with the space bar, in pixels. 429 private static final int PAGE_SCROLL_OVERLAP = 24; 430 431 /** 432 * These prevent calling requestLayout if either dimension is fixed. This 433 * depends on the layout parameters and the measure specs. 434 */ 435 boolean mWidthCanMeasure; 436 boolean mHeightCanMeasure; 437 438 // Remember the last dimensions we sent to the native side so we can avoid 439 // sending the same dimensions more than once. 440 int mLastWidthSent; 441 int mLastHeightSent; 442 443 private int mContentWidth; // cache of value from WebViewCore 444 private int mContentHeight; // cache of value from WebViewCore 445 446 // Need to have the separate control for horizontal and vertical scrollbar 447 // style than the View's single scrollbar style 448 private boolean mOverlayHorizontalScrollbar = true; 449 private boolean mOverlayVerticalScrollbar = false; 450 451 // our standard speed. this way small distances will be traversed in less 452 // time than large distances, but we cap the duration, so that very large 453 // distances won't take too long to get there. 454 private static final int STD_SPEED = 480; // pixels per second 455 // time for the longest scroll animation 456 private static final int MAX_DURATION = 750; // milliseconds 457 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 458 private Scroller mScroller; 459 460 private boolean mWrapContent; 461 private static final int MOTIONLESS_FALSE = 0; 462 private static final int MOTIONLESS_PENDING = 1; 463 private static final int MOTIONLESS_TRUE = 2; 464 private int mHeldMotionless; 465 466 // whether support multi-touch 467 private boolean mSupportMultiTouch; 468 // use the framework's ScaleGestureDetector to handle multi-touch 469 private ScaleGestureDetector mScaleDetector; 470 // minimum scale change during multi-touch zoom 471 private static float PREVIEW_SCALE_INCREMENT = 0.01f; 472 473 // the anchor point in the document space where VIEW_SIZE_CHANGED should 474 // apply to 475 private int mAnchorX; 476 private int mAnchorY; 477 478 /** 479 * Private message ids 480 */ 481 private static final int REMEMBER_PASSWORD = 1; 482 private static final int NEVER_REMEMBER_PASSWORD = 2; 483 private static final int SWITCH_TO_SHORTPRESS = 3; 484 private static final int SWITCH_TO_LONGPRESS = 4; 485 private static final int RELEASE_SINGLE_TAP = 5; 486 private static final int REQUEST_FORM_DATA = 6; 487 private static final int RESUME_WEBCORE_PRIORITY = 7; 488 private static final int DRAG_HELD_MOTIONLESS = 8; 489 private static final int AWAKEN_SCROLL_BARS = 9; 490 491 //! arg1=x, arg2=y 492 static final int SCROLL_TO_MSG_ID = 10; 493 static final int SCROLL_BY_MSG_ID = 11; 494 //! arg1=x, arg2=y 495 static final int SPAWN_SCROLL_TO_MSG_ID = 12; 496 //! arg1=x, arg2=y 497 static final int SYNC_SCROLL_TO_MSG_ID = 13; 498 static final int NEW_PICTURE_MSG_ID = 14; 499 static final int UPDATE_TEXT_ENTRY_MSG_ID = 15; 500 static final int WEBCORE_INITIALIZED_MSG_ID = 16; 501 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 17; 502 static final int UPDATE_ZOOM_RANGE = 18; 503 static final int MOVE_OUT_OF_PLUGIN = 19; 504 static final int CLEAR_TEXT_ENTRY = 20; 505 static final int UPDATE_TEXT_SELECTION_MSG_ID = 21; 506 static final int SHOW_RECT_MSG_ID = 22; 507 static final int LONG_PRESS_CENTER = 23; 508 static final int PREVENT_TOUCH_ID = 24; 509 static final int WEBCORE_NEED_TOUCH_EVENTS = 25; 510 // obj=Rect in doc coordinates 511 static final int INVAL_RECT_MSG_ID = 26; 512 static final int REQUEST_KEYBOARD = 27; 513 static final int DO_MOTION_UP = 28; 514 static final int SHOW_FULLSCREEN = 29; 515 static final int HIDE_FULLSCREEN = 30; 516 static final int DOM_FOCUS_CHANGED = 31; 517 static final int IMMEDIATE_REPAINT_MSG_ID = 32; 518 static final int SET_ROOT_LAYER_MSG_ID = 33; 519 static final int RETURN_LABEL = 34; 520 static final int FIND_AGAIN = 35; 521 522 static final String[] HandlerDebugString = { 523 "REMEMBER_PASSWORD", // = 1; 524 "NEVER_REMEMBER_PASSWORD", // = 2; 525 "SWITCH_TO_SHORTPRESS", // = 3; 526 "SWITCH_TO_LONGPRESS", // = 4; 527 "RELEASE_SINGLE_TAP", // = 5; 528 "REQUEST_FORM_DATA", // = 6; 529 "RESUME_WEBCORE_PRIORITY", // = 7; 530 "DRAG_HELD_MOTIONLESS", // = 8; 531 "AWAKEN_SCROLL_BARS", // = 9; 532 "SCROLL_TO_MSG_ID", // = 10; 533 "SCROLL_BY_MSG_ID", // = 11; 534 "SPAWN_SCROLL_TO_MSG_ID", // = 12; 535 "SYNC_SCROLL_TO_MSG_ID", // = 13; 536 "NEW_PICTURE_MSG_ID", // = 14; 537 "UPDATE_TEXT_ENTRY_MSG_ID", // = 15; 538 "WEBCORE_INITIALIZED_MSG_ID", // = 16; 539 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 17; 540 "UPDATE_ZOOM_RANGE", // = 18; 541 "MOVE_OUT_OF_PLUGIN", // = 19; 542 "CLEAR_TEXT_ENTRY", // = 20; 543 "UPDATE_TEXT_SELECTION_MSG_ID", // = 21; 544 "SHOW_RECT_MSG_ID", // = 22; 545 "LONG_PRESS_CENTER", // = 23; 546 "PREVENT_TOUCH_ID", // = 24; 547 "WEBCORE_NEED_TOUCH_EVENTS", // = 25; 548 "INVAL_RECT_MSG_ID", // = 26; 549 "REQUEST_KEYBOARD", // = 27; 550 "DO_MOTION_UP", // = 28; 551 "SHOW_FULLSCREEN", // = 29; 552 "HIDE_FULLSCREEN", // = 30; 553 "DOM_FOCUS_CHANGED", // = 31; 554 "IMMEDIATE_REPAINT_MSG_ID", // = 32; 555 "SET_ROOT_LAYER_MSG_ID", // = 33; 556 "RETURN_LABEL", // = 34; 557 "FIND_AGAIN" // = 35; 558 }; 559 560 // If the site doesn't use the viewport meta tag to specify the viewport, 561 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 562 static final int DEFAULT_VIEWPORT_WIDTH = 800; 563 564 // normally we try to fit the content to the minimum preferred width 565 // calculated by the Webkit. To avoid the bad behavior when some site's 566 // minimum preferred width keeps growing when changing the viewport width or 567 // the minimum preferred width is huge, an upper limit is needed. 568 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 569 570 // default scale limit. Depending on the display density 571 private static float DEFAULT_MAX_ZOOM_SCALE; 572 private static float DEFAULT_MIN_ZOOM_SCALE; 573 // scale limit, which can be set through viewport meta tag in the web page 574 private float mMaxZoomScale; 575 private float mMinZoomScale; 576 private boolean mMinZoomScaleFixed = true; 577 578 // initial scale in percent. 0 means using default. 579 private int mInitialScaleInPercent = 0; 580 581 // while in the zoom overview mode, the page's width is fully fit to the 582 // current window. The page is alive, in another words, you can click to 583 // follow the links. Double tap will toggle between zoom overview mode and 584 // the last zoom scale. 585 boolean mInZoomOverview = false; 586 587 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 588 // engadget always have wider mContentWidth no matter what viewport size is. 589 int mZoomOverviewWidth = DEFAULT_VIEWPORT_WIDTH; 590 float mTextWrapScale; 591 592 // default scale. Depending on the display density. 593 static int DEFAULT_SCALE_PERCENT; 594 private float mDefaultScale; 595 596 // set to true temporarily during ScaleGesture triggered zoom 597 private boolean mPreviewZoomOnly = false; 598 599 // computed scale and inverse, from mZoomWidth. 600 private float mActualScale; 601 private float mInvActualScale; 602 // if this is non-zero, it is used on drawing rather than mActualScale 603 private float mZoomScale; 604 private float mInvInitialZoomScale; 605 private float mInvFinalZoomScale; 606 private int mInitialScrollX; 607 private int mInitialScrollY; 608 private long mZoomStart; 609 private static final int ZOOM_ANIMATION_LENGTH = 500; 610 611 private boolean mUserScroll = false; 612 613 private int mSnapScrollMode = SNAP_NONE; 614 private static final int SNAP_NONE = 0; 615 private static final int SNAP_LOCK = 1; // not a separate state 616 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 617 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 618 private boolean mSnapPositive; 619 620 // keep these in sync with their counterparts in WebView.cpp 621 private static final int DRAW_EXTRAS_NONE = 0; 622 private static final int DRAW_EXTRAS_FIND = 1; 623 private static final int DRAW_EXTRAS_SELECTION = 2; 624 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 625 626 // Used to match key downs and key ups 627 private boolean mGotKeyDown; 628 629 /* package */ static boolean mLogEvent = true; 630 631 // for event log 632 private long mLastTouchUpTime = 0; 633 634 /** 635 * URI scheme for telephone number 636 */ 637 public static final String SCHEME_TEL = "tel:"; 638 /** 639 * URI scheme for email address 640 */ 641 public static final String SCHEME_MAILTO = "mailto:"; 642 /** 643 * URI scheme for map address 644 */ 645 public static final String SCHEME_GEO = "geo:0,0?q="; 646 647 private int mBackgroundColor = Color.WHITE; 648 649 // Used to notify listeners of a new picture. 650 private PictureListener mPictureListener; 651 /** 652 * Interface to listen for new pictures as they change. 653 */ 654 public interface PictureListener { 655 /** 656 * Notify the listener that the picture has changed. 657 * @param view The WebView that owns the picture. 658 * @param picture The new picture. 659 */ 660 public void onNewPicture(WebView view, Picture picture); 661 } 662 663 // FIXME: Want to make this public, but need to change the API file. 664 public /*static*/ class HitTestResult { 665 /** 666 * Default HitTestResult, where the target is unknown 667 */ 668 public static final int UNKNOWN_TYPE = 0; 669 /** 670 * HitTestResult for hitting a HTML::a tag 671 */ 672 public static final int ANCHOR_TYPE = 1; 673 /** 674 * HitTestResult for hitting a phone number 675 */ 676 public static final int PHONE_TYPE = 2; 677 /** 678 * HitTestResult for hitting a map address 679 */ 680 public static final int GEO_TYPE = 3; 681 /** 682 * HitTestResult for hitting an email address 683 */ 684 public static final int EMAIL_TYPE = 4; 685 /** 686 * HitTestResult for hitting an HTML::img tag 687 */ 688 public static final int IMAGE_TYPE = 5; 689 /** 690 * HitTestResult for hitting a HTML::a tag which contains HTML::img 691 */ 692 public static final int IMAGE_ANCHOR_TYPE = 6; 693 /** 694 * HitTestResult for hitting a HTML::a tag with src=http 695 */ 696 public static final int SRC_ANCHOR_TYPE = 7; 697 /** 698 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 699 */ 700 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 701 /** 702 * HitTestResult for hitting an edit text area 703 */ 704 public static final int EDIT_TEXT_TYPE = 9; 705 706 private int mType; 707 private String mExtra; 708 709 HitTestResult() { 710 mType = UNKNOWN_TYPE; 711 } 712 713 private void setType(int type) { 714 mType = type; 715 } 716 717 private void setExtra(String extra) { 718 mExtra = extra; 719 } 720 721 public int getType() { 722 return mType; 723 } 724 725 public String getExtra() { 726 return mExtra; 727 } 728 } 729 730 // The View containing the zoom controls 731 private ExtendedZoomControls mZoomControls; 732 private Runnable mZoomControlRunnable; 733 734 private ZoomButtonsController mZoomButtonsController; 735 736 // These keep track of the center point of the zoom. They are used to 737 // determine the point around which we should zoom. 738 private float mZoomCenterX; 739 private float mZoomCenterY; 740 741 private ZoomButtonsController.OnZoomListener mZoomListener = 742 new ZoomButtonsController.OnZoomListener() { 743 744 public void onVisibilityChanged(boolean visible) { 745 if (visible) { 746 switchOutDrawHistory(); 747 // Bring back the hidden zoom controls. 748 mZoomButtonsController.getZoomControls().setVisibility( 749 View.VISIBLE); 750 updateZoomButtonsEnabled(); 751 } 752 } 753 754 public void onZoom(boolean zoomIn) { 755 if (zoomIn) { 756 zoomIn(); 757 } else { 758 zoomOut(); 759 } 760 761 updateZoomButtonsEnabled(); 762 } 763 }; 764 765 /** 766 * Construct a new WebView with a Context object. 767 * @param context A Context object used to access application assets. 768 */ 769 public WebView(Context context) { 770 this(context, null); 771 } 772 773 /** 774 * Construct a new WebView with layout parameters. 775 * @param context A Context object used to access application assets. 776 * @param attrs An AttributeSet passed to our parent. 777 */ 778 public WebView(Context context, AttributeSet attrs) { 779 this(context, attrs, com.android.internal.R.attr.webViewStyle); 780 } 781 782 /** 783 * Construct a new WebView with layout parameters and a default style. 784 * @param context A Context object used to access application assets. 785 * @param attrs An AttributeSet passed to our parent. 786 * @param defStyle The default style resource ID. 787 */ 788 public WebView(Context context, AttributeSet attrs, int defStyle) { 789 this(context, attrs, defStyle, null); 790 } 791 792 /** 793 * Construct a new WebView with layout parameters, a default style and a set 794 * of custom Javscript interfaces to be added to the WebView at initialization 795 * time. This guarantees that these interfaces will be available when the JS 796 * context is initialized. 797 * @param context A Context object used to access application assets. 798 * @param attrs An AttributeSet passed to our parent. 799 * @param defStyle The default style resource ID. 800 * @param javascriptInterfaces is a Map of intareface names, as keys, and 801 * object implementing those interfaces, as values. 802 * @hide pending API council approval. 803 */ 804 protected WebView(Context context, AttributeSet attrs, int defStyle, 805 Map<String, Object> javascriptInterfaces) { 806 super(context, attrs, defStyle); 807 init(); 808 809 mCallbackProxy = new CallbackProxy(context, this); 810 mViewManager = new ViewManager(this); 811 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 812 mDatabase = WebViewDatabase.getInstance(context); 813 mScroller = new Scroller(context); 814 815 mZoomButtonsController = new ZoomButtonsController(this); 816 mZoomButtonsController.setOnZoomListener(mZoomListener); 817 // ZoomButtonsController positions the buttons at the bottom, but in 818 // the middle. Change their layout parameters so they appear on the 819 // right. 820 View controls = mZoomButtonsController.getZoomControls(); 821 ViewGroup.LayoutParams params = controls.getLayoutParams(); 822 if (params instanceof FrameLayout.LayoutParams) { 823 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 824 params; 825 frameParams.gravity = Gravity.RIGHT; 826 } 827 updateMultiTouchSupport(context); 828 } 829 830 void updateMultiTouchSupport(Context context) { 831 WebSettings settings = getSettings(); 832 mSupportMultiTouch = context.getPackageManager().hasSystemFeature( 833 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 834 && settings.supportZoom() && settings.getBuiltInZoomControls(); 835 if (mSupportMultiTouch && (mScaleDetector == null)) { 836 mScaleDetector = new ScaleGestureDetector(context, 837 new ScaleDetectorListener()); 838 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 839 mScaleDetector = null; 840 } 841 } 842 843 private void updateZoomButtonsEnabled() { 844 boolean canZoomIn = mActualScale < mMaxZoomScale; 845 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 846 if (!canZoomIn && !canZoomOut) { 847 // Hide the zoom in and out buttons, as well as the fit to page 848 // button, if the page cannot zoom 849 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 850 } else { 851 // Set each one individually, as a page may be able to zoom in 852 // or out. 853 mZoomButtonsController.setZoomInEnabled(canZoomIn); 854 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 855 } 856 } 857 858 private void init() { 859 setWillNotDraw(false); 860 setFocusable(true); 861 setFocusableInTouchMode(true); 862 setClickable(true); 863 setLongClickable(true); 864 865 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 866 int slop = configuration.getScaledTouchSlop(); 867 mTouchSlopSquare = slop * slop; 868 mMinLockSnapReverseDistance = slop; 869 slop = configuration.getScaledDoubleTapSlop(); 870 mDoubleTapSlopSquare = slop * slop; 871 final float density = getContext().getResources().getDisplayMetrics().density; 872 // use one line height, 16 based on our current default font, for how 873 // far we allow a touch be away from the edge of a link 874 mNavSlop = (int) (16 * density); 875 // density adjusted scale factors 876 DEFAULT_SCALE_PERCENT = (int) (100 * density); 877 mDefaultScale = density; 878 mActualScale = density; 879 mInvActualScale = 1 / density; 880 mTextWrapScale = density; 881 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 882 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 883 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 884 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 885 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 886 } 887 888 /* package */void updateDefaultZoomDensity(int zoomDensity) { 889 final float density = getContext().getResources().getDisplayMetrics().density 890 * 100 / zoomDensity; 891 if (Math.abs(density - mDefaultScale) > 0.01) { 892 float scaleFactor = density / mDefaultScale; 893 // adjust the limits 894 mNavSlop = (int) (16 * density); 895 DEFAULT_SCALE_PERCENT = (int) (100 * density); 896 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 897 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 898 mDefaultScale = density; 899 mMaxZoomScale *= scaleFactor; 900 mMinZoomScale *= scaleFactor; 901 setNewZoomScale(mActualScale * scaleFactor, true, false); 902 } 903 } 904 905 /* package */ boolean onSavePassword(String schemePlusHost, String username, 906 String password, final Message resumeMsg) { 907 boolean rVal = false; 908 if (resumeMsg == null) { 909 // null resumeMsg implies saving password silently 910 mDatabase.setUsernamePassword(schemePlusHost, username, password); 911 } else { 912 final Message remember = mPrivateHandler.obtainMessage( 913 REMEMBER_PASSWORD); 914 remember.getData().putString("host", schemePlusHost); 915 remember.getData().putString("username", username); 916 remember.getData().putString("password", password); 917 remember.obj = resumeMsg; 918 919 final Message neverRemember = mPrivateHandler.obtainMessage( 920 NEVER_REMEMBER_PASSWORD); 921 neverRemember.getData().putString("host", schemePlusHost); 922 neverRemember.getData().putString("username", username); 923 neverRemember.getData().putString("password", password); 924 neverRemember.obj = resumeMsg; 925 926 new AlertDialog.Builder(getContext()) 927 .setTitle(com.android.internal.R.string.save_password_label) 928 .setMessage(com.android.internal.R.string.save_password_message) 929 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 930 new DialogInterface.OnClickListener() { 931 public void onClick(DialogInterface dialog, int which) { 932 resumeMsg.sendToTarget(); 933 } 934 }) 935 .setNeutralButton(com.android.internal.R.string.save_password_remember, 936 new DialogInterface.OnClickListener() { 937 public void onClick(DialogInterface dialog, int which) { 938 remember.sendToTarget(); 939 } 940 }) 941 .setNegativeButton(com.android.internal.R.string.save_password_never, 942 new DialogInterface.OnClickListener() { 943 public void onClick(DialogInterface dialog, int which) { 944 neverRemember.sendToTarget(); 945 } 946 }) 947 .setOnCancelListener(new OnCancelListener() { 948 public void onCancel(DialogInterface dialog) { 949 resumeMsg.sendToTarget(); 950 } 951 }).show(); 952 // Return true so that WebViewCore will pause while the dialog is 953 // up. 954 rVal = true; 955 } 956 return rVal; 957 } 958 959 @Override 960 public void setScrollBarStyle(int style) { 961 if (style == View.SCROLLBARS_INSIDE_INSET 962 || style == View.SCROLLBARS_OUTSIDE_INSET) { 963 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 964 } else { 965 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 966 } 967 super.setScrollBarStyle(style); 968 } 969 970 /** 971 * Specify whether the horizontal scrollbar has overlay style. 972 * @param overlay TRUE if horizontal scrollbar should have overlay style. 973 */ 974 public void setHorizontalScrollbarOverlay(boolean overlay) { 975 mOverlayHorizontalScrollbar = overlay; 976 } 977 978 /** 979 * Specify whether the vertical scrollbar has overlay style. 980 * @param overlay TRUE if vertical scrollbar should have overlay style. 981 */ 982 public void setVerticalScrollbarOverlay(boolean overlay) { 983 mOverlayVerticalScrollbar = overlay; 984 } 985 986 /** 987 * Return whether horizontal scrollbar has overlay style 988 * @return TRUE if horizontal scrollbar has overlay style. 989 */ 990 public boolean overlayHorizontalScrollbar() { 991 return mOverlayHorizontalScrollbar; 992 } 993 994 /** 995 * Return whether vertical scrollbar has overlay style 996 * @return TRUE if vertical scrollbar has overlay style. 997 */ 998 public boolean overlayVerticalScrollbar() { 999 return mOverlayVerticalScrollbar; 1000 } 1001 1002 /* 1003 * Return the width of the view where the content of WebView should render 1004 * to. 1005 * Note: this can be called from WebCoreThread. 1006 */ 1007 /* package */ int getViewWidth() { 1008 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1009 return getWidth(); 1010 } else { 1011 return getWidth() - getVerticalScrollbarWidth(); 1012 } 1013 } 1014 1015 /* 1016 * returns the height of the titlebarview (if any). Does not care about 1017 * scrolling 1018 */ 1019 private int getTitleHeight() { 1020 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1021 } 1022 1023 /* 1024 * Return the amount of the titlebarview (if any) that is visible 1025 */ 1026 private int getVisibleTitleHeight() { 1027 return Math.max(getTitleHeight() - mScrollY, 0); 1028 } 1029 1030 /* 1031 * Return the height of the view where the content of WebView should render 1032 * to. Note that this excludes mTitleBar, if there is one. 1033 * Note: this can be called from WebCoreThread. 1034 */ 1035 /* package */ int getViewHeight() { 1036 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1037 } 1038 1039 private int getViewHeightWithTitle() { 1040 int height = getHeight(); 1041 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1042 height -= getHorizontalScrollbarHeight(); 1043 } 1044 return height; 1045 } 1046 1047 /** 1048 * @return The SSL certificate for the main top-level page or null if 1049 * there is no certificate (the site is not secure). 1050 */ 1051 public SslCertificate getCertificate() { 1052 return mCertificate; 1053 } 1054 1055 /** 1056 * Sets the SSL certificate for the main top-level page. 1057 */ 1058 public void setCertificate(SslCertificate certificate) { 1059 // here, the certificate can be null (if the site is not secure) 1060 mCertificate = certificate; 1061 } 1062 1063 //------------------------------------------------------------------------- 1064 // Methods called by activity 1065 //------------------------------------------------------------------------- 1066 1067 /** 1068 * Save the username and password for a particular host in the WebView's 1069 * internal database. 1070 * @param host The host that required the credentials. 1071 * @param username The username for the given host. 1072 * @param password The password for the given host. 1073 */ 1074 public void savePassword(String host, String username, String password) { 1075 mDatabase.setUsernamePassword(host, username, password); 1076 } 1077 1078 /** 1079 * Set the HTTP authentication credentials for a given host and realm. 1080 * 1081 * @param host The host for the credentials. 1082 * @param realm The realm for the credentials. 1083 * @param username The username for the password. If it is null, it means 1084 * password can't be saved. 1085 * @param password The password 1086 */ 1087 public void setHttpAuthUsernamePassword(String host, String realm, 1088 String username, String password) { 1089 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1090 } 1091 1092 /** 1093 * Retrieve the HTTP authentication username and password for a given 1094 * host & realm pair 1095 * 1096 * @param host The host for which the credentials apply. 1097 * @param realm The realm for which the credentials apply. 1098 * @return String[] if found, String[0] is username, which can be null and 1099 * String[1] is password. Return null if it can't find anything. 1100 */ 1101 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1102 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1103 } 1104 1105 /** 1106 * Destroy the internal state of the WebView. This method should be called 1107 * after the WebView has been removed from the view system. No other 1108 * methods may be called on a WebView after destroy. 1109 */ 1110 public void destroy() { 1111 clearTextEntry(false); 1112 if (mWebViewCore != null) { 1113 // Set the handlers to null before destroying WebViewCore so no 1114 // more messages will be posted. 1115 mCallbackProxy.setWebViewClient(null); 1116 mCallbackProxy.setWebChromeClient(null); 1117 // Tell WebViewCore to destroy itself 1118 WebViewCore webViewCore = mWebViewCore; 1119 mWebViewCore = null; // prevent using partial webViewCore 1120 webViewCore.destroy(); 1121 // Remove any pending messages that might not be serviced yet. 1122 mPrivateHandler.removeCallbacksAndMessages(null); 1123 mCallbackProxy.removeCallbacksAndMessages(null); 1124 // Wake up the WebCore thread just in case it is waiting for a 1125 // javascript dialog. 1126 synchronized (mCallbackProxy) { 1127 mCallbackProxy.notify(); 1128 } 1129 } 1130 if (mNativeClass != 0) { 1131 nativeDestroy(); 1132 mNativeClass = 0; 1133 } 1134 } 1135 1136 /** 1137 * Enables platform notifications of data state and proxy changes. 1138 */ 1139 public static void enablePlatformNotifications() { 1140 Network.enablePlatformNotifications(); 1141 } 1142 1143 /** 1144 * If platform notifications are enabled, this should be called 1145 * from the Activity's onPause() or onStop(). 1146 */ 1147 public static void disablePlatformNotifications() { 1148 Network.disablePlatformNotifications(); 1149 } 1150 1151 /** 1152 * Sets JavaScript engine flags. 1153 * 1154 * @param flags JS engine flags in a String 1155 * 1156 * @hide pending API solidification 1157 */ 1158 public void setJsFlags(String flags) { 1159 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1160 } 1161 1162 /** 1163 * Inform WebView of the network state. This is used to set 1164 * the javascript property window.navigator.isOnline and 1165 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1166 * @param networkUp boolean indicating if network is available 1167 */ 1168 public void setNetworkAvailable(boolean networkUp) { 1169 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1170 networkUp ? 1 : 0, 0); 1171 } 1172 1173 /** 1174 * Inform WebView about the current network type. 1175 * {@hide} 1176 */ 1177 public void setNetworkType(String type, String subtype) { 1178 Map<String, String> map = new HashMap<String, String>(); 1179 map.put("type", type); 1180 map.put("subtype", subtype); 1181 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1182 } 1183 /** 1184 * Save the state of this WebView used in 1185 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1186 * method no longer stores the display data for this WebView. The previous 1187 * behavior could potentially leak files if {@link #restoreState} was never 1188 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1189 * and restoring the display data. 1190 * @param outState The Bundle to store the WebView state. 1191 * @return The same copy of the back/forward list used to save the state. If 1192 * saveState fails, the returned list will be null. 1193 * @see #savePicture 1194 * @see #restorePicture 1195 */ 1196 public WebBackForwardList saveState(Bundle outState) { 1197 if (outState == null) { 1198 return null; 1199 } 1200 // We grab a copy of the back/forward list because a client of WebView 1201 // may have invalidated the history list by calling clearHistory. 1202 WebBackForwardList list = copyBackForwardList(); 1203 final int currentIndex = list.getCurrentIndex(); 1204 final int size = list.getSize(); 1205 // We should fail saving the state if the list is empty or the index is 1206 // not in a valid range. 1207 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1208 return null; 1209 } 1210 outState.putInt("index", currentIndex); 1211 // FIXME: This should just be a byte[][] instead of ArrayList but 1212 // Parcel.java does not have the code to handle multi-dimensional 1213 // arrays. 1214 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1215 for (int i = 0; i < size; i++) { 1216 WebHistoryItem item = list.getItemAtIndex(i); 1217 if (null == item) { 1218 // FIXME: this shouldn't happen 1219 // need to determine how item got set to null 1220 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1221 return null; 1222 } 1223 byte[] data = item.getFlattenedData(); 1224 if (data == null) { 1225 // It would be very odd to not have any data for a given history 1226 // item. And we will fail to rebuild the history list without 1227 // flattened data. 1228 return null; 1229 } 1230 history.add(data); 1231 } 1232 outState.putSerializable("history", history); 1233 if (mCertificate != null) { 1234 outState.putBundle("certificate", 1235 SslCertificate.saveState(mCertificate)); 1236 } 1237 return list; 1238 } 1239 1240 /** 1241 * Save the current display data to the Bundle given. Used in conjunction 1242 * with {@link #saveState}. 1243 * @param b A Bundle to store the display data. 1244 * @param dest The file to store the serialized picture data. Will be 1245 * overwritten with this WebView's picture data. 1246 * @return True if the picture was successfully saved. 1247 */ 1248 public boolean savePicture(Bundle b, File dest) { 1249 if (dest == null || b == null) { 1250 return false; 1251 } 1252 final Picture p = capturePicture(); 1253 try { 1254 final FileOutputStream out = new FileOutputStream(dest); 1255 p.writeToStream(out); 1256 out.close(); 1257 } catch (FileNotFoundException e){ 1258 e.printStackTrace(); 1259 } catch (IOException e) { 1260 e.printStackTrace(); 1261 } catch (RuntimeException e) { 1262 e.printStackTrace(); 1263 } 1264 if (dest.length() > 0) { 1265 b.putInt("scrollX", mScrollX); 1266 b.putInt("scrollY", mScrollY); 1267 b.putFloat("scale", mActualScale); 1268 b.putFloat("textwrapScale", mTextWrapScale); 1269 b.putBoolean("overview", mInZoomOverview); 1270 return true; 1271 } 1272 return false; 1273 } 1274 1275 /** 1276 * Restore the display data that was save in {@link #savePicture}. Used in 1277 * conjunction with {@link #restoreState}. 1278 * @param b A Bundle containing the saved display data. 1279 * @param src The file where the picture data was stored. 1280 * @return True if the picture was successfully restored. 1281 */ 1282 public boolean restorePicture(Bundle b, File src) { 1283 if (src == null || b == null) { 1284 return false; 1285 } 1286 if (src.exists()) { 1287 Picture p = null; 1288 try { 1289 final FileInputStream in = new FileInputStream(src); 1290 p = Picture.createFromStream(in); 1291 in.close(); 1292 } catch (FileNotFoundException e){ 1293 e.printStackTrace(); 1294 } catch (RuntimeException e) { 1295 e.printStackTrace(); 1296 } catch (IOException e) { 1297 e.printStackTrace(); 1298 } 1299 if (p != null) { 1300 int sx = b.getInt("scrollX", 0); 1301 int sy = b.getInt("scrollY", 0); 1302 float scale = b.getFloat("scale", 1.0f); 1303 mDrawHistory = true; 1304 mHistoryPicture = p; 1305 mScrollX = sx; 1306 mScrollY = sy; 1307 mHistoryWidth = Math.round(p.getWidth() * scale); 1308 mHistoryHeight = Math.round(p.getHeight() * scale); 1309 // as getWidth() / getHeight() of the view are not 1310 // available yet, set up mActualScale, so that when 1311 // onSizeChanged() is called, the rest will be set 1312 // correctly 1313 mActualScale = scale; 1314 mInvActualScale = 1 / scale; 1315 mTextWrapScale = b.getFloat("textwrapScale", scale); 1316 mInZoomOverview = b.getBoolean("overview"); 1317 invalidate(); 1318 return true; 1319 } 1320 } 1321 return false; 1322 } 1323 1324 /** 1325 * Restore the state of this WebView from the given map used in 1326 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1327 * be called to restore the state of the WebView before using the object. If 1328 * it is called after the WebView has had a chance to build state (load 1329 * pages, create a back/forward list, etc.) there may be undesirable 1330 * side-effects. Please note that this method no longer restores the 1331 * display data for this WebView. See {@link #savePicture} and {@link 1332 * #restorePicture} for saving and restoring the display data. 1333 * @param inState The incoming Bundle of state. 1334 * @return The restored back/forward list or null if restoreState failed. 1335 * @see #savePicture 1336 * @see #restorePicture 1337 */ 1338 public WebBackForwardList restoreState(Bundle inState) { 1339 WebBackForwardList returnList = null; 1340 if (inState == null) { 1341 return returnList; 1342 } 1343 if (inState.containsKey("index") && inState.containsKey("history")) { 1344 mCertificate = SslCertificate.restoreState( 1345 inState.getBundle("certificate")); 1346 1347 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1348 final int index = inState.getInt("index"); 1349 // We can't use a clone of the list because we need to modify the 1350 // shared copy, so synchronize instead to prevent concurrent 1351 // modifications. 1352 synchronized (list) { 1353 final List<byte[]> history = 1354 (List<byte[]>) inState.getSerializable("history"); 1355 final int size = history.size(); 1356 // Check the index bounds so we don't crash in native code while 1357 // restoring the history index. 1358 if (index < 0 || index >= size) { 1359 return null; 1360 } 1361 for (int i = 0; i < size; i++) { 1362 byte[] data = history.remove(0); 1363 if (data == null) { 1364 // If we somehow have null data, we cannot reconstruct 1365 // the item and thus our history list cannot be rebuilt. 1366 return null; 1367 } 1368 WebHistoryItem item = new WebHistoryItem(data); 1369 list.addHistoryItem(item); 1370 } 1371 // Grab the most recent copy to return to the caller. 1372 returnList = copyBackForwardList(); 1373 // Update the copy to have the correct index. 1374 returnList.setCurrentIndex(index); 1375 } 1376 // Remove all pending messages because we are restoring previous 1377 // state. 1378 mWebViewCore.removeMessages(); 1379 // Send a restore state message. 1380 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1381 } 1382 return returnList; 1383 } 1384 1385 /** 1386 * Load the given url with the extra headers. 1387 * @param url The url of the resource to load. 1388 * @param extraHeaders The extra headers sent with this url. This should not 1389 * include the common headers like "user-agent". If it does, it 1390 * will be replaced by the intrinsic value of the WebView. 1391 */ 1392 public void loadUrl(String url, Map<String, String> extraHeaders) { 1393 switchOutDrawHistory(); 1394 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1395 arg.mUrl = url; 1396 arg.mExtraHeaders = extraHeaders; 1397 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1398 clearTextEntry(false); 1399 } 1400 1401 /** 1402 * Load the given url. 1403 * @param url The url of the resource to load. 1404 */ 1405 public void loadUrl(String url) { 1406 if (url == null) { 1407 return; 1408 } 1409 loadUrl(url, null); 1410 } 1411 1412 /** 1413 * Load the url with postData using "POST" method into the WebView. If url 1414 * is not a network url, it will be loaded with {link 1415 * {@link #loadUrl(String)} instead. 1416 * 1417 * @param url The url of the resource to load. 1418 * @param postData The data will be passed to "POST" request. 1419 */ 1420 public void postUrl(String url, byte[] postData) { 1421 if (URLUtil.isNetworkUrl(url)) { 1422 switchOutDrawHistory(); 1423 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1424 arg.mUrl = url; 1425 arg.mPostData = postData; 1426 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1427 clearTextEntry(false); 1428 } else { 1429 loadUrl(url); 1430 } 1431 } 1432 1433 /** 1434 * Load the given data into the WebView. This will load the data into 1435 * WebView using the data: scheme. Content loaded through this mechanism 1436 * does not have the ability to load content from the network. 1437 * @param data A String of data in the given encoding. 1438 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1439 * @param encoding The encoding of the data. i.e. utf-8, base64 1440 */ 1441 public void loadData(String data, String mimeType, String encoding) { 1442 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1443 } 1444 1445 /** 1446 * Load the given data into the WebView, use the provided URL as the base 1447 * URL for the content. The base URL is the URL that represents the page 1448 * that is loaded through this interface. As such, it is used for the 1449 * history entry and to resolve any relative URLs. The failUrl is used if 1450 * browser fails to load the data provided. If it is empty or null, and the 1451 * load fails, then no history entry is created. 1452 * <p> 1453 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1454 * files through "file:///android_asset/" for the sub resources is more 1455 * restricted. If you provide null or empty string as baseUrl, you won't be 1456 * able to access asset files. If the baseUrl is anything other than 1457 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1458 * sub resources. 1459 * 1460 * @param baseUrl Url to resolve relative paths with, if null defaults to 1461 * "about:blank" 1462 * @param data A String of data in the given encoding. 1463 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1464 * defaults to "text/html" 1465 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1466 * @param failUrl URL to use if the content fails to load or null. 1467 */ 1468 public void loadDataWithBaseURL(String baseUrl, String data, 1469 String mimeType, String encoding, String failUrl) { 1470 1471 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1472 loadData(data, mimeType, encoding); 1473 return; 1474 } 1475 switchOutDrawHistory(); 1476 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1477 arg.mBaseUrl = baseUrl; 1478 arg.mData = data; 1479 arg.mMimeType = mimeType; 1480 arg.mEncoding = encoding; 1481 arg.mFailUrl = failUrl; 1482 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1483 clearTextEntry(false); 1484 } 1485 1486 /** 1487 * Stop the current load. 1488 */ 1489 public void stopLoading() { 1490 // TODO: should we clear all the messages in the queue before sending 1491 // STOP_LOADING? 1492 switchOutDrawHistory(); 1493 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1494 } 1495 1496 /** 1497 * Reload the current url. 1498 */ 1499 public void reload() { 1500 clearTextEntry(false); 1501 switchOutDrawHistory(); 1502 mWebViewCore.sendMessage(EventHub.RELOAD); 1503 } 1504 1505 /** 1506 * Return true if this WebView has a back history item. 1507 * @return True iff this WebView has a back history item. 1508 */ 1509 public boolean canGoBack() { 1510 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1511 synchronized (l) { 1512 if (l.getClearPending()) { 1513 return false; 1514 } else { 1515 return l.getCurrentIndex() > 0; 1516 } 1517 } 1518 } 1519 1520 /** 1521 * Go back in the history of this WebView. 1522 */ 1523 public void goBack() { 1524 goBackOrForward(-1); 1525 } 1526 1527 /** 1528 * Return true if this WebView has a forward history item. 1529 * @return True iff this Webview has a forward history item. 1530 */ 1531 public boolean canGoForward() { 1532 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1533 synchronized (l) { 1534 if (l.getClearPending()) { 1535 return false; 1536 } else { 1537 return l.getCurrentIndex() < l.getSize() - 1; 1538 } 1539 } 1540 } 1541 1542 /** 1543 * Go forward in the history of this WebView. 1544 */ 1545 public void goForward() { 1546 goBackOrForward(1); 1547 } 1548 1549 /** 1550 * Return true if the page can go back or forward the given 1551 * number of steps. 1552 * @param steps The negative or positive number of steps to move the 1553 * history. 1554 */ 1555 public boolean canGoBackOrForward(int steps) { 1556 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1557 synchronized (l) { 1558 if (l.getClearPending()) { 1559 return false; 1560 } else { 1561 int newIndex = l.getCurrentIndex() + steps; 1562 return newIndex >= 0 && newIndex < l.getSize(); 1563 } 1564 } 1565 } 1566 1567 /** 1568 * Go to the history item that is the number of steps away from 1569 * the current item. Steps is negative if backward and positive 1570 * if forward. 1571 * @param steps The number of steps to take back or forward in the back 1572 * forward list. 1573 */ 1574 public void goBackOrForward(int steps) { 1575 goBackOrForward(steps, false); 1576 } 1577 1578 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1579 // every time we go back or forward, we want to reset the 1580 // WebView certificate: 1581 // if the new site is secure, we will reload it and get a 1582 // new certificate set; 1583 // if the new site is not secure, the certificate must be 1584 // null, and that will be the case 1585 mCertificate = null; 1586 if (steps != 0) { 1587 clearTextEntry(false); 1588 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1589 ignoreSnapshot ? 1 : 0); 1590 } 1591 } 1592 1593 private boolean extendScroll(int y) { 1594 int finalY = mScroller.getFinalY(); 1595 int newY = pinLocY(finalY + y); 1596 if (newY == finalY) return false; 1597 mScroller.setFinalY(newY); 1598 mScroller.extendDuration(computeDuration(0, y)); 1599 return true; 1600 } 1601 1602 /** 1603 * Scroll the contents of the view up by half the view size 1604 * @param top true to jump to the top of the page 1605 * @return true if the page was scrolled 1606 */ 1607 public boolean pageUp(boolean top) { 1608 if (mNativeClass == 0) { 1609 return false; 1610 } 1611 nativeClearCursor(); // start next trackball movement from page edge 1612 if (top) { 1613 // go to the top of the document 1614 return pinScrollTo(mScrollX, 0, true, 0); 1615 } 1616 // Page up 1617 int h = getHeight(); 1618 int y; 1619 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1620 y = -h + PAGE_SCROLL_OVERLAP; 1621 } else { 1622 y = -h / 2; 1623 } 1624 mUserScroll = true; 1625 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1626 : extendScroll(y); 1627 } 1628 1629 /** 1630 * Scroll the contents of the view down by half the page size 1631 * @param bottom true to jump to bottom of page 1632 * @return true if the page was scrolled 1633 */ 1634 public boolean pageDown(boolean bottom) { 1635 if (mNativeClass == 0) { 1636 return false; 1637 } 1638 nativeClearCursor(); // start next trackball movement from page edge 1639 if (bottom) { 1640 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1641 } 1642 // Page down. 1643 int h = getHeight(); 1644 int y; 1645 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1646 y = h - PAGE_SCROLL_OVERLAP; 1647 } else { 1648 y = h / 2; 1649 } 1650 mUserScroll = true; 1651 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1652 : extendScroll(y); 1653 } 1654 1655 /** 1656 * Clear the view so that onDraw() will draw nothing but white background, 1657 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1658 */ 1659 public void clearView() { 1660 mContentWidth = 0; 1661 mContentHeight = 0; 1662 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1663 } 1664 1665 /** 1666 * Return a new picture that captures the current display of the webview. 1667 * This is a copy of the display, and will be unaffected if the webview 1668 * later loads a different URL. 1669 * 1670 * @return a picture containing the current contents of the view. Note this 1671 * picture is of the entire document, and is not restricted to the 1672 * bounds of the view. 1673 */ 1674 public Picture capturePicture() { 1675 if (null == mWebViewCore) return null; // check for out of memory tab 1676 return mWebViewCore.copyContentPicture(); 1677 } 1678 1679 /** 1680 * Return true if the browser is displaying a TextView for text input. 1681 */ 1682 private boolean inEditingMode() { 1683 return mWebTextView != null && mWebTextView.getParent() != null 1684 && mWebTextView.hasFocus(); 1685 } 1686 1687 /** 1688 * Remove the WebTextView. 1689 * @param disableFocusController If true, send a message to webkit 1690 * disabling the focus controller, so the caret stops blinking. 1691 */ 1692 private void clearTextEntry(boolean disableFocusController) { 1693 if (inEditingMode()) { 1694 mWebTextView.remove(); 1695 if (disableFocusController) { 1696 setFocusControllerInactive(); 1697 } 1698 } 1699 } 1700 1701 /** 1702 * Return the current scale of the WebView 1703 * @return The current scale. 1704 */ 1705 public float getScale() { 1706 return mActualScale; 1707 } 1708 1709 /** 1710 * Set the initial scale for the WebView. 0 means default. If 1711 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1712 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1713 * WebView starts will this value as initial scale. 1714 * 1715 * @param scaleInPercent The initial scale in percent. 1716 */ 1717 public void setInitialScale(int scaleInPercent) { 1718 mInitialScaleInPercent = scaleInPercent; 1719 } 1720 1721 /** 1722 * Invoke the graphical zoom picker widget for this WebView. This will 1723 * result in the zoom widget appearing on the screen to control the zoom 1724 * level of this WebView. 1725 */ 1726 public void invokeZoomPicker() { 1727 if (!getSettings().supportZoom()) { 1728 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1729 return; 1730 } 1731 clearTextEntry(false); 1732 if (getSettings().getBuiltInZoomControls()) { 1733 mZoomButtonsController.setVisible(true); 1734 } else { 1735 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1736 mPrivateHandler.postDelayed(mZoomControlRunnable, 1737 ZOOM_CONTROLS_TIMEOUT); 1738 } 1739 } 1740 1741 /** 1742 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1743 * is found and the anchor has a non-javascript url, the HitTestResult type 1744 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1745 * anchor does not have a url or if it is a javascript url, the type will 1746 * be UNKNOWN_TYPE and the url has to be retrieved through 1747 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1748 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1749 * the "extra" field. A type of 1750 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1751 * a child node. If a phone number is found, the HitTestResult type is set 1752 * to PHONE_TYPE and the phone number is set in the "extra" field of 1753 * HitTestResult. If a map address is found, the HitTestResult type is set 1754 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1755 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1756 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1757 * HitTestResult type is set to UNKNOWN_TYPE. 1758 */ 1759 public HitTestResult getHitTestResult() { 1760 if (mNativeClass == 0) { 1761 return null; 1762 } 1763 1764 HitTestResult result = new HitTestResult(); 1765 if (nativeHasCursorNode()) { 1766 if (nativeCursorIsTextInput()) { 1767 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1768 } else { 1769 String text = nativeCursorText(); 1770 if (text != null) { 1771 if (text.startsWith(SCHEME_TEL)) { 1772 result.setType(HitTestResult.PHONE_TYPE); 1773 result.setExtra(text.substring(SCHEME_TEL.length())); 1774 } else if (text.startsWith(SCHEME_MAILTO)) { 1775 result.setType(HitTestResult.EMAIL_TYPE); 1776 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1777 } else if (text.startsWith(SCHEME_GEO)) { 1778 result.setType(HitTestResult.GEO_TYPE); 1779 result.setExtra(URLDecoder.decode(text 1780 .substring(SCHEME_GEO.length()))); 1781 } else if (nativeCursorIsAnchor()) { 1782 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1783 result.setExtra(text); 1784 } 1785 } 1786 } 1787 } 1788 int type = result.getType(); 1789 if (type == HitTestResult.UNKNOWN_TYPE 1790 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1791 // Now check to see if it is an image. 1792 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1793 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1794 String text = nativeImageURI(contentX, contentY); 1795 if (text != null) { 1796 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1797 HitTestResult.IMAGE_TYPE : 1798 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1799 result.setExtra(text); 1800 } 1801 } 1802 return result; 1803 } 1804 1805 // Called by JNI when the DOM has changed the focus. Clear the focus so 1806 // that new keys will go to the newly focused field 1807 private void domChangedFocus() { 1808 if (inEditingMode()) { 1809 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 1810 } 1811 } 1812 /** 1813 * Request the href of an anchor element due to getFocusNodePath returning 1814 * "href." If hrefMsg is null, this method returns immediately and does not 1815 * dispatch hrefMsg to its target. 1816 * 1817 * @param hrefMsg This message will be dispatched with the result of the 1818 * request as the data member with "url" as key. The result can 1819 * be null. 1820 */ 1821 // FIXME: API change required to change the name of this function. We now 1822 // look at the cursor node, and not the focus node. Also, what is 1823 // getFocusNodePath? 1824 public void requestFocusNodeHref(Message hrefMsg) { 1825 if (hrefMsg == null || mNativeClass == 0) { 1826 return; 1827 } 1828 if (nativeCursorIsAnchor()) { 1829 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1830 nativeCursorFramePointer(), nativeCursorNodePointer(), 1831 hrefMsg); 1832 } 1833 } 1834 1835 /** 1836 * Request the url of the image last touched by the user. msg will be sent 1837 * to its target with a String representing the url as its object. 1838 * 1839 * @param msg This message will be dispatched with the result of the request 1840 * as the data member with "url" as key. The result can be null. 1841 */ 1842 public void requestImageRef(Message msg) { 1843 if (0 == mNativeClass) return; // client isn't initialized 1844 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1845 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1846 String ref = nativeImageURI(contentX, contentY); 1847 Bundle data = msg.getData(); 1848 data.putString("url", ref); 1849 msg.setData(data); 1850 msg.sendToTarget(); 1851 } 1852 1853 private static int pinLoc(int x, int viewMax, int docMax) { 1854// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1855 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1856 // pin the short document to the top/left of the screen 1857 x = 0; 1858// Log.d(LOGTAG, "--- center " + x); 1859 } else if (x < 0) { 1860 x = 0; 1861// Log.d(LOGTAG, "--- zero"); 1862 } else if (x + viewMax > docMax) { 1863 x = docMax - viewMax; 1864// Log.d(LOGTAG, "--- pin " + x); 1865 } 1866 return x; 1867 } 1868 1869 // Expects x in view coordinates 1870 private int pinLocX(int x) { 1871 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1872 } 1873 1874 // Expects y in view coordinates 1875 private int pinLocY(int y) { 1876 int titleH = getTitleHeight(); 1877 // if the titlebar is still visible, just pin against 0 1878 if (y <= titleH) { 1879 return Math.max(y, 0); 1880 } 1881 // convert to 0-based coordinate (subtract the title height) 1882 // pin(), and then add the title height back in 1883 return pinLoc(y - titleH, getViewHeight(), 1884 computeVerticalScrollRange()) + titleH; 1885 } 1886 1887 /** 1888 * A title bar which is embedded in this WebView, and scrolls along with it 1889 * vertically, but not horizontally. 1890 */ 1891 private View mTitleBar; 1892 1893 /** 1894 * Since we draw the title bar ourselves, we removed the shadow from the 1895 * browser's activity. We do want a shadow at the bottom of the title bar, 1896 * or at the top of the screen if the title bar is not visible. This 1897 * drawable serves that purpose. 1898 */ 1899 private Drawable mTitleShadow; 1900 1901 /** 1902 * Add or remove a title bar to be embedded into the WebView, and scroll 1903 * along with it vertically, while remaining in view horizontally. Pass 1904 * null to remove the title bar from the WebView, and return to drawing 1905 * the WebView normally without translating to account for the title bar. 1906 * @hide 1907 */ 1908 public void setEmbeddedTitleBar(View v) { 1909 if (mTitleBar == v) return; 1910 if (mTitleBar != null) { 1911 removeView(mTitleBar); 1912 } 1913 if (null != v) { 1914 addView(v, new AbsoluteLayout.LayoutParams( 1915 ViewGroup.LayoutParams.MATCH_PARENT, 1916 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1917 if (mTitleShadow == null) { 1918 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1919 com.android.internal.R.drawable.title_bar_shadow); 1920 } 1921 } 1922 mTitleBar = v; 1923 } 1924 1925 /** 1926 * Given a distance in view space, convert it to content space. Note: this 1927 * does not reflect translation, just scaling, so this should not be called 1928 * with coordinates, but should be called for dimensions like width or 1929 * height. 1930 */ 1931 private int viewToContentDimension(int d) { 1932 return Math.round(d * mInvActualScale); 1933 } 1934 1935 /** 1936 * Given an x coordinate in view space, convert it to content space. Also 1937 * may be used for absolute heights (such as for the WebTextView's 1938 * textSize, which is unaffected by the height of the title bar). 1939 */ 1940 /*package*/ int viewToContentX(int x) { 1941 return viewToContentDimension(x); 1942 } 1943 1944 /** 1945 * Given a y coordinate in view space, convert it to content space. 1946 * Takes into account the height of the title bar if there is one 1947 * embedded into the WebView. 1948 */ 1949 /*package*/ int viewToContentY(int y) { 1950 return viewToContentDimension(y - getTitleHeight()); 1951 } 1952 1953 /** 1954 * Given a distance in content space, convert it to view space. Note: this 1955 * does not reflect translation, just scaling, so this should not be called 1956 * with coordinates, but should be called for dimensions like width or 1957 * height. 1958 */ 1959 /*package*/ int contentToViewDimension(int d) { 1960 return Math.round(d * mActualScale); 1961 } 1962 1963 /** 1964 * Given an x coordinate in content space, convert it to view 1965 * space. 1966 */ 1967 /*package*/ int contentToViewX(int x) { 1968 return contentToViewDimension(x); 1969 } 1970 1971 /** 1972 * Given a y coordinate in content space, convert it to view 1973 * space. Takes into account the height of the title bar. 1974 */ 1975 /*package*/ int contentToViewY(int y) { 1976 return contentToViewDimension(y) + getTitleHeight(); 1977 } 1978 1979 private Rect contentToViewRect(Rect x) { 1980 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 1981 contentToViewX(x.right), contentToViewY(x.bottom)); 1982 } 1983 1984 /* To invalidate a rectangle in content coordinates, we need to transform 1985 the rect into view coordinates, so we can then call invalidate(...). 1986 1987 Normally, we would just call contentToView[XY](...), which eventually 1988 calls Math.round(coordinate * mActualScale). However, for invalidates, 1989 we need to account for the slop that occurs with antialiasing. To 1990 address that, we are a little more liberal in the size of the rect that 1991 we invalidate. 1992 1993 This liberal calculation calls floor() for the top/left, and ceil() for 1994 the bottom/right coordinates. This catches the possible extra pixels of 1995 antialiasing that we might have missed with just round(). 1996 */ 1997 1998 // Called by JNI to invalidate the View, given rectangle coordinates in 1999 // content space 2000 private void viewInvalidate(int l, int t, int r, int b) { 2001 final float scale = mActualScale; 2002 final int dy = getTitleHeight(); 2003 invalidate((int)Math.floor(l * scale), 2004 (int)Math.floor(t * scale) + dy, 2005 (int)Math.ceil(r * scale), 2006 (int)Math.ceil(b * scale) + dy); 2007 } 2008 2009 // Called by JNI to invalidate the View after a delay, given rectangle 2010 // coordinates in content space 2011 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2012 final float scale = mActualScale; 2013 final int dy = getTitleHeight(); 2014 postInvalidateDelayed(delay, 2015 (int)Math.floor(l * scale), 2016 (int)Math.floor(t * scale) + dy, 2017 (int)Math.ceil(r * scale), 2018 (int)Math.ceil(b * scale) + dy); 2019 } 2020 2021 private void invalidateContentRect(Rect r) { 2022 viewInvalidate(r.left, r.top, r.right, r.bottom); 2023 } 2024 2025 // stop the scroll animation, and don't let a subsequent fling add 2026 // to the existing velocity 2027 private void abortAnimation() { 2028 mScroller.abortAnimation(); 2029 mLastVelocity = 0; 2030 } 2031 2032 /* call from webcoreview.draw(), so we're still executing in the UI thread 2033 */ 2034 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2035 2036 // premature data from webkit, ignore 2037 if ((w | h) == 0) { 2038 return; 2039 } 2040 2041 // don't abort a scroll animation if we didn't change anything 2042 if (mContentWidth != w || mContentHeight != h) { 2043 // record new dimensions 2044 mContentWidth = w; 2045 mContentHeight = h; 2046 // If history Picture is drawn, don't update scroll. They will be 2047 // updated when we get out of that mode. 2048 if (!mDrawHistory) { 2049 // repin our scroll, taking into account the new content size 2050 int oldX = mScrollX; 2051 int oldY = mScrollY; 2052 mScrollX = pinLocX(mScrollX); 2053 mScrollY = pinLocY(mScrollY); 2054 if (oldX != mScrollX || oldY != mScrollY) { 2055 sendOurVisibleRect(); 2056 } 2057 if (!mScroller.isFinished()) { 2058 // We are in the middle of a scroll. Repin the final scroll 2059 // position. 2060 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2061 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2062 } 2063 } 2064 } 2065 contentSizeChanged(updateLayout); 2066 } 2067 2068 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 2069 boolean force) { 2070 if (scale < mMinZoomScale) { 2071 scale = mMinZoomScale; 2072 // set mInZoomOverview for non mobile sites 2073 if (scale < mDefaultScale) mInZoomOverview = true; 2074 } else if (scale > mMaxZoomScale) { 2075 scale = mMaxZoomScale; 2076 } 2077 if (updateTextWrapScale) { 2078 mTextWrapScale = scale; 2079 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 2080 mLastHeightSent = 0; 2081 } 2082 if (scale != mActualScale || force) { 2083 if (mDrawHistory) { 2084 // If history Picture is drawn, don't update scroll. They will 2085 // be updated when we get out of that mode. 2086 if (scale != mActualScale && !mPreviewZoomOnly) { 2087 mCallbackProxy.onScaleChanged(mActualScale, scale); 2088 } 2089 mActualScale = scale; 2090 mInvActualScale = 1 / scale; 2091 sendViewSizeZoom(); 2092 } else { 2093 // update our scroll so we don't appear to jump 2094 // i.e. keep the center of the doc in the center of the view 2095 2096 int oldX = mScrollX; 2097 int oldY = mScrollY; 2098 float ratio = scale * mInvActualScale; // old inverse 2099 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2100 float sy = ratio * oldY + (ratio - 1) 2101 * (mZoomCenterY - getTitleHeight()); 2102 2103 // now update our new scale and inverse 2104 if (scale != mActualScale && !mPreviewZoomOnly) { 2105 mCallbackProxy.onScaleChanged(mActualScale, scale); 2106 } 2107 mActualScale = scale; 2108 mInvActualScale = 1 / scale; 2109 2110 // Scale all the child views 2111 mViewManager.scaleAll(); 2112 2113 // as we don't have animation for scaling, don't do animation 2114 // for scrolling, as it causes weird intermediate state 2115 // pinScrollTo(Math.round(sx), Math.round(sy)); 2116 mScrollX = pinLocX(Math.round(sx)); 2117 mScrollY = pinLocY(Math.round(sy)); 2118 2119 // update webkit 2120 sendViewSizeZoom(); 2121 sendOurVisibleRect(); 2122 } 2123 } 2124 } 2125 2126 // Used to avoid sending many visible rect messages. 2127 private Rect mLastVisibleRectSent; 2128 private Rect mLastGlobalRect; 2129 2130 private Rect sendOurVisibleRect() { 2131 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2132 2133 Rect rect = new Rect(); 2134 calcOurContentVisibleRect(rect); 2135 // Rect.equals() checks for null input. 2136 if (!rect.equals(mLastVisibleRectSent)) { 2137 Point pos = new Point(rect.left, rect.top); 2138 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2139 nativeMoveGeneration(), 0, pos); 2140 mLastVisibleRectSent = rect; 2141 } 2142 Rect globalRect = new Rect(); 2143 if (getGlobalVisibleRect(globalRect) 2144 && !globalRect.equals(mLastGlobalRect)) { 2145 if (DebugFlags.WEB_VIEW) { 2146 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2147 + globalRect.top + ",r=" + globalRect.right + ",b=" 2148 + globalRect.bottom); 2149 } 2150 // TODO: the global offset is only used by windowRect() 2151 // in ChromeClientAndroid ; other clients such as touch 2152 // and mouse events could return view + screen relative points. 2153 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2154 mLastGlobalRect = globalRect; 2155 } 2156 return rect; 2157 } 2158 2159 // Sets r to be the visible rectangle of our webview in view coordinates 2160 private void calcOurVisibleRect(Rect r) { 2161 Point p = new Point(); 2162 getGlobalVisibleRect(r, p); 2163 r.offset(-p.x, -p.y); 2164 if (mFindIsUp) { 2165 r.bottom -= mFindHeight; 2166 } 2167 } 2168 2169 // Sets r to be our visible rectangle in content coordinates 2170 private void calcOurContentVisibleRect(Rect r) { 2171 calcOurVisibleRect(r); 2172 r.left = viewToContentX(r.left); 2173 // viewToContentY will remove the total height of the title bar. Add 2174 // the visible height back in to account for the fact that if the title 2175 // bar is partially visible, the part of the visible rect which is 2176 // displaying our content is displaced by that amount. 2177 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2178 r.right = viewToContentX(r.right); 2179 r.bottom = viewToContentY(r.bottom); 2180 } 2181 2182 static class ViewSizeData { 2183 int mWidth; 2184 int mHeight; 2185 int mTextWrapWidth; 2186 int mAnchorX; 2187 int mAnchorY; 2188 float mScale; 2189 boolean mIgnoreHeight; 2190 } 2191 2192 /** 2193 * Compute unzoomed width and height, and if they differ from the last 2194 * values we sent, send them to webkit (to be used has new viewport) 2195 * 2196 * @return true if new values were sent 2197 */ 2198 private boolean sendViewSizeZoom() { 2199 if (mPreviewZoomOnly) return false; 2200 2201 int viewWidth = getViewWidth(); 2202 int newWidth = Math.round(viewWidth * mInvActualScale); 2203 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2204 /* 2205 * Because the native side may have already done a layout before the 2206 * View system was able to measure us, we have to send a height of 0 to 2207 * remove excess whitespace when we grow our width. This will trigger a 2208 * layout and a change in content size. This content size change will 2209 * mean that contentSizeChanged will either call this method directly or 2210 * indirectly from onSizeChanged. 2211 */ 2212 if (newWidth > mLastWidthSent && mWrapContent) { 2213 newHeight = 0; 2214 } 2215 // Avoid sending another message if the dimensions have not changed. 2216 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2217 ViewSizeData data = new ViewSizeData(); 2218 data.mWidth = newWidth; 2219 data.mHeight = newHeight; 2220 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2221 data.mScale = mActualScale; 2222 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2223 data.mAnchorX = mAnchorX; 2224 data.mAnchorY = mAnchorY; 2225 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2226 mLastWidthSent = newWidth; 2227 mLastHeightSent = newHeight; 2228 mAnchorX = mAnchorY = 0; 2229 return true; 2230 } 2231 return false; 2232 } 2233 2234 @Override 2235 protected int computeHorizontalScrollRange() { 2236 if (mDrawHistory) { 2237 return mHistoryWidth; 2238 } else { 2239 // to avoid rounding error caused unnecessary scrollbar, use floor 2240 return (int) Math.floor(mContentWidth * mActualScale); 2241 } 2242 } 2243 2244 @Override 2245 protected int computeVerticalScrollRange() { 2246 if (mDrawHistory) { 2247 return mHistoryHeight; 2248 } else { 2249 // to avoid rounding error caused unnecessary scrollbar, use floor 2250 return (int) Math.floor(mContentHeight * mActualScale); 2251 } 2252 } 2253 2254 @Override 2255 protected int computeVerticalScrollOffset() { 2256 return Math.max(mScrollY - getTitleHeight(), 0); 2257 } 2258 2259 @Override 2260 protected int computeVerticalScrollExtent() { 2261 return getViewHeight(); 2262 } 2263 2264 /** @hide */ 2265 @Override 2266 protected void onDrawVerticalScrollBar(Canvas canvas, 2267 Drawable scrollBar, 2268 int l, int t, int r, int b) { 2269 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2270 scrollBar.draw(canvas); 2271 } 2272 2273 /** 2274 * Get the url for the current page. This is not always the same as the url 2275 * passed to WebViewClient.onPageStarted because although the load for 2276 * that url has begun, the current page may not have changed. 2277 * @return The url for the current page. 2278 */ 2279 public String getUrl() { 2280 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2281 return h != null ? h.getUrl() : null; 2282 } 2283 2284 /** 2285 * Get the original url for the current page. This is not always the same 2286 * as the url passed to WebViewClient.onPageStarted because although the 2287 * load for that url has begun, the current page may not have changed. 2288 * Also, there may have been redirects resulting in a different url to that 2289 * originally requested. 2290 * @return The url that was originally requested for the current page. 2291 */ 2292 public String getOriginalUrl() { 2293 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2294 return h != null ? h.getOriginalUrl() : null; 2295 } 2296 2297 /** 2298 * Get the title for the current page. This is the title of the current page 2299 * until WebViewClient.onReceivedTitle is called. 2300 * @return The title for the current page. 2301 */ 2302 public String getTitle() { 2303 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2304 return h != null ? h.getTitle() : null; 2305 } 2306 2307 /** 2308 * Get the favicon for the current page. This is the favicon of the current 2309 * page until WebViewClient.onReceivedIcon is called. 2310 * @return The favicon for the current page. 2311 */ 2312 public Bitmap getFavicon() { 2313 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2314 return h != null ? h.getFavicon() : null; 2315 } 2316 2317 /** 2318 * Get the touch icon url for the apple-touch-icon <link> element. 2319 * @hide 2320 */ 2321 public String getTouchIconUrl() { 2322 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2323 return h != null ? h.getTouchIconUrl() : null; 2324 } 2325 2326 /** 2327 * Get the progress for the current page. 2328 * @return The progress for the current page between 0 and 100. 2329 */ 2330 public int getProgress() { 2331 return mCallbackProxy.getProgress(); 2332 } 2333 2334 /** 2335 * @return the height of the HTML content. 2336 */ 2337 public int getContentHeight() { 2338 return mContentHeight; 2339 } 2340 2341 /** 2342 * @return the width of the HTML content. 2343 * @hide 2344 */ 2345 public int getContentWidth() { 2346 return mContentWidth; 2347 } 2348 2349 /** 2350 * Pause all layout, parsing, and javascript timers for all webviews. This 2351 * is a global requests, not restricted to just this webview. This can be 2352 * useful if the application has been paused. 2353 */ 2354 public void pauseTimers() { 2355 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2356 } 2357 2358 /** 2359 * Resume all layout, parsing, and javascript timers for all webviews. 2360 * This will resume dispatching all timers. 2361 */ 2362 public void resumeTimers() { 2363 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2364 } 2365 2366 /** 2367 * Call this to pause any extra processing associated with this view and 2368 * its associated DOM/plugins/javascript/etc. For example, if the view is 2369 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2370 * network traffic. When the view is again "active", call onResume(). 2371 * 2372 * Note that this differs from pauseTimers(), which affects all views/DOMs 2373 * @hide 2374 */ 2375 public void onPause() { 2376 if (!mIsPaused) { 2377 mIsPaused = true; 2378 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2379 } 2380 } 2381 2382 /** 2383 * Call this to balanace a previous call to onPause() 2384 * @hide 2385 */ 2386 public void onResume() { 2387 if (mIsPaused) { 2388 mIsPaused = false; 2389 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2390 } 2391 } 2392 2393 /** 2394 * Returns true if the view is paused, meaning onPause() was called. Calling 2395 * onResume() sets the paused state back to false. 2396 * @hide 2397 */ 2398 public boolean isPaused() { 2399 return mIsPaused; 2400 } 2401 2402 /** 2403 * Call this to inform the view that memory is low so that it can 2404 * free any available memory. 2405 */ 2406 public void freeMemory() { 2407 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2408 } 2409 2410 /** 2411 * Clear the resource cache. Note that the cache is per-application, so 2412 * this will clear the cache for all WebViews used. 2413 * 2414 * @param includeDiskFiles If false, only the RAM cache is cleared. 2415 */ 2416 public void clearCache(boolean includeDiskFiles) { 2417 // Note: this really needs to be a static method as it clears cache for all 2418 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2419 // we can't make this static. 2420 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2421 includeDiskFiles ? 1 : 0, 0); 2422 } 2423 2424 /** 2425 * Make sure that clearing the form data removes the adapter from the 2426 * currently focused textfield if there is one. 2427 */ 2428 public void clearFormData() { 2429 if (inEditingMode()) { 2430 AutoCompleteAdapter adapter = null; 2431 mWebTextView.setAdapterCustom(adapter); 2432 } 2433 } 2434 2435 /** 2436 * Tell the WebView to clear its internal back/forward list. 2437 */ 2438 public void clearHistory() { 2439 mCallbackProxy.getBackForwardList().setClearPending(); 2440 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2441 } 2442 2443 /** 2444 * Clear the SSL preferences table stored in response to proceeding with SSL 2445 * certificate errors. 2446 */ 2447 public void clearSslPreferences() { 2448 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2449 } 2450 2451 /** 2452 * Return the WebBackForwardList for this WebView. This contains the 2453 * back/forward list for use in querying each item in the history stack. 2454 * This is a copy of the private WebBackForwardList so it contains only a 2455 * snapshot of the current state. Multiple calls to this method may return 2456 * different objects. The object returned from this method will not be 2457 * updated to reflect any new state. 2458 */ 2459 public WebBackForwardList copyBackForwardList() { 2460 return mCallbackProxy.getBackForwardList().clone(); 2461 } 2462 2463 /* 2464 * Highlight and scroll to the next occurance of String in findAll. 2465 * Wraps the page infinitely, and scrolls. Must be called after 2466 * calling findAll. 2467 * 2468 * @param forward Direction to search. 2469 */ 2470 public void findNext(boolean forward) { 2471 if (0 == mNativeClass) return; // client isn't initialized 2472 nativeFindNext(forward); 2473 } 2474 2475 /* 2476 * Find all instances of find on the page and highlight them. 2477 * @param find String to find. 2478 * @return int The number of occurances of the String "find" 2479 * that were found. 2480 */ 2481 public int findAll(String find) { 2482 if (0 == mNativeClass) return 0; // client isn't initialized 2483 if (mFindIsUp == false) { 2484 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2485 false); 2486 mFindIsUp = true; 2487 } 2488 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2489 invalidate(); 2490 mLastFind = find; 2491 return result; 2492 } 2493 2494 // Used to know whether the find dialog is open. Affects whether 2495 // or not we draw the highlights for matches. 2496 private boolean mFindIsUp; 2497 private int mFindHeight; 2498 // Keep track of the last string sent, so we can search again after an 2499 // orientation change or the dismissal of the soft keyboard. 2500 private String mLastFind; 2501 2502 /** 2503 * Return the first substring consisting of the address of a physical 2504 * location. Currently, only addresses in the United States are detected, 2505 * and consist of: 2506 * - a house number 2507 * - a street name 2508 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2509 * - a city name 2510 * - a state or territory, either spelled out or two-letter abbr. 2511 * - an optional 5 digit or 9 digit zip code. 2512 * 2513 * All names must be correctly capitalized, and the zip code, if present, 2514 * must be valid for the state. The street type must be a standard USPS 2515 * spelling or abbreviation. The state or territory must also be spelled 2516 * or abbreviated using USPS standards. The house number may not exceed 2517 * five digits. 2518 * @param addr The string to search for addresses. 2519 * 2520 * @return the address, or if no address is found, return null. 2521 */ 2522 public static String findAddress(String addr) { 2523 return findAddress(addr, false); 2524 } 2525 2526 /** 2527 * @hide 2528 * Return the first substring consisting of the address of a physical 2529 * location. Currently, only addresses in the United States are detected, 2530 * and consist of: 2531 * - a house number 2532 * - a street name 2533 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2534 * - a city name 2535 * - a state or territory, either spelled out or two-letter abbr. 2536 * - an optional 5 digit or 9 digit zip code. 2537 * 2538 * Names are optionally capitalized, and the zip code, if present, 2539 * must be valid for the state. The street type must be a standard USPS 2540 * spelling or abbreviation. The state or territory must also be spelled 2541 * or abbreviated using USPS standards. The house number may not exceed 2542 * five digits. 2543 * @param addr The string to search for addresses. 2544 * @param caseInsensitive addr Set to true to make search ignore case. 2545 * 2546 * @return the address, or if no address is found, return null. 2547 */ 2548 public static String findAddress(String addr, boolean caseInsensitive) { 2549 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2550 } 2551 2552 /* 2553 * Clear the highlighting surrounding text matches created by findAll. 2554 */ 2555 public void clearMatches() { 2556 if (mNativeClass == 0) 2557 return; 2558 if (mFindIsUp) { 2559 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2560 false); 2561 mFindIsUp = false; 2562 } 2563 nativeSetFindIsUp(); 2564 // Now that the dialog has been removed, ensure that we scroll to a 2565 // location that is not beyond the end of the page. 2566 pinScrollTo(mScrollX, mScrollY, false, 0); 2567 invalidate(); 2568 } 2569 2570 /** 2571 * @hide 2572 */ 2573 public void setFindDialogHeight(int height) { 2574 if (DebugFlags.WEB_VIEW) { 2575 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2576 } 2577 mFindHeight = height; 2578 } 2579 2580 /** 2581 * Query the document to see if it contains any image references. The 2582 * message object will be dispatched with arg1 being set to 1 if images 2583 * were found and 0 if the document does not reference any images. 2584 * @param response The message that will be dispatched with the result. 2585 */ 2586 public void documentHasImages(Message response) { 2587 if (response == null) { 2588 return; 2589 } 2590 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2591 } 2592 2593 @Override 2594 public void computeScroll() { 2595 if (mScroller.computeScrollOffset()) { 2596 int oldX = mScrollX; 2597 int oldY = mScrollY; 2598 mScrollX = mScroller.getCurrX(); 2599 mScrollY = mScroller.getCurrY(); 2600 postInvalidate(); // So we draw again 2601 if (oldX != mScrollX || oldY != mScrollY) { 2602 // as onScrollChanged() is not called, sendOurVisibleRect() 2603 // needs to be call explicitly 2604 sendOurVisibleRect(); 2605 } 2606 } else { 2607 super.computeScroll(); 2608 } 2609 } 2610 2611 private static int computeDuration(int dx, int dy) { 2612 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2613 int duration = distance * 1000 / STD_SPEED; 2614 return Math.min(duration, MAX_DURATION); 2615 } 2616 2617 // helper to pin the scrollBy parameters (already in view coordinates) 2618 // returns true if the scroll was changed 2619 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2620 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2621 } 2622 // helper to pin the scrollTo parameters (already in view coordinates) 2623 // returns true if the scroll was changed 2624 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2625 x = pinLocX(x); 2626 y = pinLocY(y); 2627 int dx = x - mScrollX; 2628 int dy = y - mScrollY; 2629 2630 if ((dx | dy) == 0) { 2631 return false; 2632 } 2633 if (animate) { 2634 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2635 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2636 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2637 awakenScrollBars(mScroller.getDuration()); 2638 invalidate(); 2639 } else { 2640 abortAnimation(); // just in case 2641 scrollTo(x, y); 2642 } 2643 return true; 2644 } 2645 2646 // Scale from content to view coordinates, and pin. 2647 // Also called by jni webview.cpp 2648 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2649 if (mDrawHistory) { 2650 // disallow WebView to change the scroll position as History Picture 2651 // is used in the view system. 2652 // TODO: as we switchOutDrawHistory when trackball or navigation 2653 // keys are hit, this should be safe. Right? 2654 return false; 2655 } 2656 cx = contentToViewDimension(cx); 2657 cy = contentToViewDimension(cy); 2658 if (mHeightCanMeasure) { 2659 // move our visible rect according to scroll request 2660 if (cy != 0) { 2661 Rect tempRect = new Rect(); 2662 calcOurVisibleRect(tempRect); 2663 tempRect.offset(cx, cy); 2664 requestRectangleOnScreen(tempRect); 2665 } 2666 // FIXME: We scroll horizontally no matter what because currently 2667 // ScrollView and ListView will not scroll horizontally. 2668 // FIXME: Why do we only scroll horizontally if there is no 2669 // vertical scroll? 2670// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2671 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2672 } else { 2673 return pinScrollBy(cx, cy, animate, 0); 2674 } 2675 } 2676 2677 /** 2678 * Called by CallbackProxy when the page finishes loading. 2679 * @param url The URL of the page which has finished loading. 2680 */ 2681 /* package */ void onPageFinished(String url) { 2682 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 2683 // If the user is now on a different page, or has scrolled the page 2684 // past the point where the title bar is offscreen, ignore the 2685 // scroll request. 2686 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 2687 && mScrollX == 0 && mScrollY == 0) { 2688 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 2689 SLIDE_TITLE_DURATION); 2690 } 2691 mPageThatNeedsToSlideTitleBarOffScreen = null; 2692 } 2693 } 2694 2695 /** 2696 * The URL of a page that sent a message to scroll the title bar off screen. 2697 * 2698 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 2699 * title bar off the screen. Sometimes, the scroll position is set before 2700 * the page finishes loading. Rather than scrolling while the page is still 2701 * loading, keep track of the URL and new scroll position so we can perform 2702 * the scroll once the page finishes loading. 2703 */ 2704 private String mPageThatNeedsToSlideTitleBarOffScreen; 2705 2706 /** 2707 * The destination Y scroll position to be used when the page finishes 2708 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 2709 */ 2710 private int mYDistanceToSlideTitleOffScreen; 2711 2712 // scale from content to view coordinates, and pin 2713 // return true if pin caused the final x/y different than the request cx/cy, 2714 // and a future scroll may reach the request cx/cy after our size has 2715 // changed 2716 // return false if the view scroll to the exact position as it is requested, 2717 // where negative numbers are taken to mean 0 2718 private boolean setContentScrollTo(int cx, int cy) { 2719 if (mDrawHistory) { 2720 // disallow WebView to change the scroll position as History Picture 2721 // is used in the view system. 2722 // One known case where this is called is that WebCore tries to 2723 // restore the scroll position. As history Picture already uses the 2724 // saved scroll position, it is ok to skip this. 2725 return false; 2726 } 2727 int vx; 2728 int vy; 2729 if ((cx | cy) == 0) { 2730 // If the page is being scrolled to (0,0), do not add in the title 2731 // bar's height, and simply scroll to (0,0). (The only other work 2732 // in contentToView_ is to multiply, so this would not change 0.) 2733 vx = 0; 2734 vy = 0; 2735 } else { 2736 vx = contentToViewX(cx); 2737 vy = contentToViewY(cy); 2738 } 2739// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2740// vx + " " + vy + "]"); 2741 // Some mobile sites attempt to scroll the title bar off the page by 2742 // scrolling to (0,1). If we are at the top left corner of the 2743 // page, assume this is an attempt to scroll off the title bar, and 2744 // animate the title bar off screen slowly enough that the user can see 2745 // it. 2746 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 2747 && mTitleBar != null) { 2748 // FIXME: 100 should be defined somewhere as our max progress. 2749 if (getProgress() < 100) { 2750 // Wait to scroll the title bar off screen until the page has 2751 // finished loading. Keep track of the URL and the destination 2752 // Y position 2753 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 2754 mYDistanceToSlideTitleOffScreen = vy; 2755 } else { 2756 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2757 } 2758 // Since we are animating, we have not yet reached the desired 2759 // scroll position. Do not return true to request another attempt 2760 return false; 2761 } 2762 pinScrollTo(vx, vy, false, 0); 2763 // If the request was to scroll to a negative coordinate, treat it as if 2764 // it was a request to scroll to 0 2765 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2766 return true; 2767 } else { 2768 return false; 2769 } 2770 } 2771 2772 // scale from content to view coordinates, and pin 2773 private void spawnContentScrollTo(int cx, int cy) { 2774 if (mDrawHistory) { 2775 // disallow WebView to change the scroll position as History Picture 2776 // is used in the view system. 2777 return; 2778 } 2779 int vx = contentToViewX(cx); 2780 int vy = contentToViewY(cy); 2781 pinScrollTo(vx, vy, true, 0); 2782 } 2783 2784 /** 2785 * These are from webkit, and are in content coordinate system (unzoomed) 2786 */ 2787 private void contentSizeChanged(boolean updateLayout) { 2788 // suppress 0,0 since we usually see real dimensions soon after 2789 // this avoids drawing the prev content in a funny place. If we find a 2790 // way to consolidate these notifications, this check may become 2791 // obsolete 2792 if ((mContentWidth | mContentHeight) == 0) { 2793 return; 2794 } 2795 2796 if (mHeightCanMeasure) { 2797 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2798 || updateLayout) { 2799 requestLayout(); 2800 } 2801 } else if (mWidthCanMeasure) { 2802 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2803 || updateLayout) { 2804 requestLayout(); 2805 } 2806 } else { 2807 // If we don't request a layout, try to send our view size to the 2808 // native side to ensure that WebCore has the correct dimensions. 2809 sendViewSizeZoom(); 2810 } 2811 } 2812 2813 /** 2814 * Set the WebViewClient that will receive various notifications and 2815 * requests. This will replace the current handler. 2816 * @param client An implementation of WebViewClient. 2817 */ 2818 public void setWebViewClient(WebViewClient client) { 2819 mCallbackProxy.setWebViewClient(client); 2820 } 2821 2822 /** 2823 * Gets the WebViewClient 2824 * @return the current WebViewClient instance. 2825 * 2826 *@hide pending API council approval. 2827 */ 2828 public WebViewClient getWebViewClient() { 2829 return mCallbackProxy.getWebViewClient(); 2830 } 2831 2832 /** 2833 * Register the interface to be used when content can not be handled by 2834 * the rendering engine, and should be downloaded instead. This will replace 2835 * the current handler. 2836 * @param listener An implementation of DownloadListener. 2837 */ 2838 public void setDownloadListener(DownloadListener listener) { 2839 mCallbackProxy.setDownloadListener(listener); 2840 } 2841 2842 /** 2843 * Set the chrome handler. This is an implementation of WebChromeClient for 2844 * use in handling Javascript dialogs, favicons, titles, and the progress. 2845 * This will replace the current handler. 2846 * @param client An implementation of WebChromeClient. 2847 */ 2848 public void setWebChromeClient(WebChromeClient client) { 2849 mCallbackProxy.setWebChromeClient(client); 2850 } 2851 2852 /** 2853 * Gets the chrome handler. 2854 * @return the current WebChromeClient instance. 2855 * 2856 * @hide API council approval. 2857 */ 2858 public WebChromeClient getWebChromeClient() { 2859 return mCallbackProxy.getWebChromeClient(); 2860 } 2861 2862 /** 2863 * Set the back/forward list client. This is an implementation of 2864 * WebBackForwardListClient for handling new items and changes in the 2865 * history index. 2866 * @param client An implementation of WebBackForwardListClient. 2867 * {@hide} 2868 */ 2869 public void setWebBackForwardListClient(WebBackForwardListClient client) { 2870 mCallbackProxy.setWebBackForwardListClient(client); 2871 } 2872 2873 /** 2874 * Gets the WebBackForwardListClient. 2875 * {@hide} 2876 */ 2877 public WebBackForwardListClient getWebBackForwardListClient() { 2878 return mCallbackProxy.getWebBackForwardListClient(); 2879 } 2880 2881 /** 2882 * Set the Picture listener. This is an interface used to receive 2883 * notifications of a new Picture. 2884 * @param listener An implementation of WebView.PictureListener. 2885 */ 2886 public void setPictureListener(PictureListener listener) { 2887 mPictureListener = listener; 2888 } 2889 2890 /** 2891 * {@hide} 2892 */ 2893 /* FIXME: Debug only! Remove for SDK! */ 2894 public void externalRepresentation(Message callback) { 2895 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2896 } 2897 2898 /** 2899 * {@hide} 2900 */ 2901 /* FIXME: Debug only! Remove for SDK! */ 2902 public void documentAsText(Message callback) { 2903 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2904 } 2905 2906 /** 2907 * Use this function to bind an object to Javascript so that the 2908 * methods can be accessed from Javascript. 2909 * <p><strong>IMPORTANT:</strong> 2910 * <ul> 2911 * <li> Using addJavascriptInterface() allows JavaScript to control your 2912 * application. This can be a very useful feature or a dangerous security 2913 * issue. When the HTML in the WebView is untrustworthy (for example, part 2914 * or all of the HTML is provided by some person or process), then an 2915 * attacker could inject HTML that will execute your code and possibly any 2916 * code of the attacker's choosing.<br> 2917 * Do not use addJavascriptInterface() unless all of the HTML in this 2918 * WebView was written by you.</li> 2919 * <li> The Java object that is bound runs in another thread and not in 2920 * the thread that it was constructed in.</li> 2921 * </ul></p> 2922 * @param obj The class instance to bind to Javascript 2923 * @param interfaceName The name to used to expose the class in Javascript 2924 */ 2925 public void addJavascriptInterface(Object obj, String interfaceName) { 2926 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2927 arg.mObject = obj; 2928 arg.mInterfaceName = interfaceName; 2929 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2930 } 2931 2932 /** 2933 * Return the WebSettings object used to control the settings for this 2934 * WebView. 2935 * @return A WebSettings object that can be used to control this WebView's 2936 * settings. 2937 */ 2938 public WebSettings getSettings() { 2939 return mWebViewCore.getSettings(); 2940 } 2941 2942 /** 2943 * Use this method to inform the webview about packages that are installed 2944 * in the system. This information will be used by the 2945 * navigator.isApplicationInstalled() API. 2946 * @param packageNames is a set of package names that are known to be 2947 * installed in the system. 2948 * 2949 * @hide not a public API 2950 */ 2951 public void addPackageNames(Set<String> packageNames) { 2952 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, packageNames); 2953 } 2954 2955 /** 2956 * Use this method to inform the webview about single packages that are 2957 * installed in the system. This information will be used by the 2958 * navigator.isApplicationInstalled() API. 2959 * @param packageName is the name of a package that is known to be 2960 * installed in the system. 2961 * 2962 * @hide not a public API 2963 */ 2964 public void addPackageName(String packageName) { 2965 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 2966 } 2967 2968 /** 2969 * Use this method to inform the webview about packages that are uninstalled 2970 * in the system. This information will be used by the 2971 * navigator.isApplicationInstalled() API. 2972 * @param packageName is the name of a package that has been uninstalled in 2973 * the system. 2974 * 2975 * @hide not a public API 2976 */ 2977 public void removePackageName(String packageName) { 2978 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 2979 } 2980 2981 /** 2982 * Return the list of currently loaded plugins. 2983 * @return The list of currently loaded plugins. 2984 * 2985 * @deprecated This was used for Gears, which has been deprecated. 2986 */ 2987 @Deprecated 2988 public static synchronized PluginList getPluginList() { 2989 return new PluginList(); 2990 } 2991 2992 /** 2993 * @deprecated This was used for Gears, which has been deprecated. 2994 */ 2995 @Deprecated 2996 public void refreshPlugins(boolean reloadOpenPages) { } 2997 2998 //------------------------------------------------------------------------- 2999 // Override View methods 3000 //------------------------------------------------------------------------- 3001 3002 @Override 3003 protected void finalize() throws Throwable { 3004 try { 3005 destroy(); 3006 } finally { 3007 super.finalize(); 3008 } 3009 } 3010 3011 @Override 3012 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3013 if (child == mTitleBar) { 3014 // When drawing the title bar, move it horizontally to always show 3015 // at the top of the WebView. 3016 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3017 } 3018 return super.drawChild(canvas, child, drawingTime); 3019 } 3020 3021 private void drawContent(Canvas canvas) { 3022 // Update the buttons in the picture, so when we draw the picture 3023 // to the screen, they are in the correct state. 3024 // Tell the native side if user is a) touching the screen, 3025 // b) pressing the trackball down, or c) pressing the enter key 3026 // If the cursor is on a button, we need to draw it in the pressed 3027 // state. 3028 // If mNativeClass is 0, we should not reach here, so we do not 3029 // need to check it again. 3030 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3031 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3032 || mTrackballDown || mGotCenterDown, false); 3033 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3034 } 3035 3036 @Override 3037 protected void onDraw(Canvas canvas) { 3038 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3039 if (mNativeClass == 0) { 3040 return; 3041 } 3042 3043 int saveCount = canvas.save(); 3044 if (mTitleBar != null) { 3045 canvas.translate(0, (int) mTitleBar.getHeight()); 3046 } 3047 if (mDragTrackerHandler == null) { 3048 drawContent(canvas); 3049 } else { 3050 if (!mDragTrackerHandler.draw(canvas)) { 3051 // sometimes the tracker doesn't draw, even though its active 3052 drawContent(canvas); 3053 } 3054 if (mDragTrackerHandler.isFinished()) { 3055 mDragTrackerHandler = null; 3056 } 3057 } 3058 canvas.restoreToCount(saveCount); 3059 3060 // Now draw the shadow. 3061 if (mTitleBar != null) { 3062 int y = mScrollY + getVisibleTitleHeight(); 3063 int height = (int) (5f * getContext().getResources() 3064 .getDisplayMetrics().density); 3065 mTitleShadow.setBounds(mScrollX, y, mScrollX + getWidth(), 3066 y + height); 3067 mTitleShadow.draw(canvas); 3068 } 3069 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3070 invalidate(); 3071 } 3072 mWebViewCore.signalRepaintDone(); 3073 } 3074 3075 @Override 3076 public void setLayoutParams(ViewGroup.LayoutParams params) { 3077 if (params.height == LayoutParams.WRAP_CONTENT) { 3078 mWrapContent = true; 3079 } 3080 super.setLayoutParams(params); 3081 } 3082 3083 @Override 3084 public boolean performLongClick() { 3085 // performLongClick() is the result of a delayed message. If we switch 3086 // to windows overview, the WebView will be temporarily removed from the 3087 // view system. In that case, do nothing. 3088 if (getParent() == null) return false; 3089 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3090 // Send the click so that the textfield is in focus 3091 centerKeyPressOnTextField(); 3092 rebuildWebTextView(); 3093 } 3094 if (inEditingMode()) { 3095 return mWebTextView.performLongClick(); 3096 } else { 3097 return super.performLongClick(); 3098 } 3099 } 3100 3101 boolean inAnimateZoom() { 3102 return mZoomScale != 0; 3103 } 3104 3105 /** 3106 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3107 * has changed. This is especially important for password fields, which are 3108 * drawn by the WebTextView, since it conveys more information than what 3109 * webkit draws. Thus we need to reposition it to show in the correct 3110 * place. 3111 */ 3112 private boolean mNeedToAdjustWebTextView; 3113 3114 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3115 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3116 Rect vBox = contentToViewRect(contentBounds); 3117 Rect visibleRect = new Rect(); 3118 calcOurVisibleRect(visibleRect); 3119 // If the textfield is on screen, place the WebTextView in 3120 // its new place, accounting for our new scroll/zoom values, 3121 // and adjust its textsize. 3122 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3123 : visibleRect.contains(vBox)) { 3124 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3125 vBox.height()); 3126 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3127 contentToViewDimension( 3128 nativeFocusCandidateTextSize())); 3129 return true; 3130 } else { 3131 // The textfield is now off screen. The user probably 3132 // was not zooming to see the textfield better. Remove 3133 // the WebTextView. If the user types a key, and the 3134 // textfield is still in focus, we will reconstruct 3135 // the WebTextView and scroll it back on screen. 3136 mWebTextView.remove(); 3137 return false; 3138 } 3139 } 3140 3141 private static class Metrics { 3142 int mScrollX; 3143 int mScrollY; 3144 int mWidth; 3145 int mHeight; 3146 float mInvScale; 3147 } 3148 3149 private Metrics getViewMetrics() { 3150 Metrics metrics = new Metrics(); 3151 metrics.mScrollX = mScrollX; 3152 metrics.mScrollY = computeVerticalScrollOffset(); 3153 metrics.mWidth = getWidth(); 3154 metrics.mHeight = getHeight() - getVisibleTitleHeight(); 3155 if (mFindIsUp) { 3156 metrics.mHeight -= mFindHeight; 3157 } 3158 metrics.mInvScale = mInvActualScale; 3159 return metrics; 3160 } 3161 3162 private void drawExtras(Canvas canvas, int extras) { 3163 // If mNativeClass is 0, we should not reach here, so we do not 3164 // need to check it again. 3165 // Currently for each draw we compute the animation values; 3166 // We may in the future decide to do that independently. 3167 if (nativeEvaluateLayersAnimations()) { 3168 // If we have unfinished (or unstarted) animations, 3169 // we ask for a repaint. 3170 invalidate(); 3171 } 3172 3173 nativeDrawExtras(canvas, extras); 3174 } 3175 3176 private void drawCoreAndCursorRing(Canvas canvas, int color, 3177 boolean drawCursorRing) { 3178 if (mDrawHistory) { 3179 canvas.scale(mActualScale, mActualScale); 3180 canvas.drawPicture(mHistoryPicture); 3181 return; 3182 } 3183 3184 boolean animateZoom = mZoomScale != 0; 3185 boolean animateScroll = (!mScroller.isFinished() 3186 || mVelocityTracker != null) 3187 && (mTouchMode != TOUCH_DRAG_MODE || 3188 mHeldMotionless != MOTIONLESS_TRUE); 3189 if (mTouchMode == TOUCH_DRAG_MODE) { 3190 if (mHeldMotionless == MOTIONLESS_PENDING) { 3191 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3192 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3193 mHeldMotionless = MOTIONLESS_FALSE; 3194 } 3195 if (mHeldMotionless == MOTIONLESS_FALSE) { 3196 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3197 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3198 mHeldMotionless = MOTIONLESS_PENDING; 3199 } 3200 } 3201 if (animateZoom) { 3202 float zoomScale; 3203 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 3204 if (interval < ZOOM_ANIMATION_LENGTH) { 3205 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 3206 zoomScale = 1.0f / (mInvInitialZoomScale 3207 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 3208 invalidate(); 3209 } else { 3210 zoomScale = mZoomScale; 3211 // set mZoomScale to be 0 as we have done animation 3212 mZoomScale = 0; 3213 WebViewCore.resumeUpdatePicture(mWebViewCore); 3214 // call invalidate() again to draw with the final filters 3215 invalidate(); 3216 if (mNeedToAdjustWebTextView) { 3217 mNeedToAdjustWebTextView = false; 3218 if (didUpdateTextViewBounds(false) 3219 && nativeFocusCandidateIsPassword()) { 3220 // If it is a password field, start drawing the 3221 // WebTextView once again. 3222 mWebTextView.setInPassword(true); 3223 } 3224 } 3225 } 3226 // calculate the intermediate scroll position. As we need to use 3227 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 3228 float scale = zoomScale * mInvInitialZoomScale; 3229 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 3230 - mZoomCenterX); 3231 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 3232 * zoomScale)) + mScrollX; 3233 int titleHeight = getTitleHeight(); 3234 int ty = Math.round(scale 3235 * (mInitialScrollY + mZoomCenterY - titleHeight) 3236 - (mZoomCenterY - titleHeight)); 3237 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 3238 - titleHeight, getViewHeight(), Math.round(mContentHeight 3239 * zoomScale)) + titleHeight) + mScrollY; 3240 canvas.translate(tx, ty); 3241 canvas.scale(zoomScale, zoomScale); 3242 if (inEditingMode() && !mNeedToAdjustWebTextView 3243 && mZoomScale != 0) { 3244 // The WebTextView is up. Keep track of this so we can adjust 3245 // its size and placement when we finish zooming 3246 mNeedToAdjustWebTextView = true; 3247 // If it is in password mode, turn it off so it does not draw 3248 // misplaced. 3249 if (nativeFocusCandidateIsPassword()) { 3250 mWebTextView.setInPassword(false); 3251 } 3252 } 3253 } else { 3254 canvas.scale(mActualScale, mActualScale); 3255 } 3256 3257 mWebViewCore.drawContentPicture(canvas, color, 3258 (animateZoom || mPreviewZoomOnly), animateScroll); 3259 if (mNativeClass == 0) return; 3260 // decide which adornments to draw 3261 int extras = DRAW_EXTRAS_NONE; 3262 if (mFindIsUp) { 3263 // When the FindDialog is up, only draw the matches if we are not in 3264 // the process of scrolling them into view. 3265 if (!animateScroll) { 3266 extras = DRAW_EXTRAS_FIND; 3267 } 3268 } else if (mShiftIsPressed) { 3269 if (!animateZoom && !mPreviewZoomOnly) { 3270 extras = DRAW_EXTRAS_SELECTION; 3271 nativeSetSelectionRegion(mTouchSelection || mExtendSelection); 3272 nativeSetSelectionPointer(!mTouchSelection, mInvActualScale, 3273 mSelectX, mSelectY - getTitleHeight(), 3274 mExtendSelection); 3275 } 3276 } else if (drawCursorRing) { 3277 extras = DRAW_EXTRAS_CURSOR_RING; 3278 } 3279 drawExtras(canvas, extras); 3280 3281 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3282 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3283 mTouchMode = TOUCH_SHORTPRESS_MODE; 3284 HitTestResult hitTest = getHitTestResult(); 3285 if (mPreventLongPress || (hitTest != null && 3286 hitTest.mType != HitTestResult.UNKNOWN_TYPE)) { 3287 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3288 .obtainMessage(SWITCH_TO_LONGPRESS), 3289 LONG_PRESS_TIMEOUT); 3290 } 3291 } 3292 } 3293 if (mFocusSizeChanged) { 3294 mFocusSizeChanged = false; 3295 // If we are zooming, this will get handled above, when the zoom 3296 // finishes. We also do not need to do this unless the WebTextView 3297 // is showing. 3298 if (!animateZoom && inEditingMode()) { 3299 didUpdateTextViewBounds(true); 3300 } 3301 } 3302 } 3303 3304 // draw history 3305 private boolean mDrawHistory = false; 3306 private Picture mHistoryPicture = null; 3307 private int mHistoryWidth = 0; 3308 private int mHistoryHeight = 0; 3309 3310 // Only check the flag, can be called from WebCore thread 3311 boolean drawHistory() { 3312 return mDrawHistory; 3313 } 3314 3315 // Should only be called in UI thread 3316 void switchOutDrawHistory() { 3317 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3318 if (mDrawHistory && mWebViewCore.pictureReady()) { 3319 mDrawHistory = false; 3320 invalidate(); 3321 int oldScrollX = mScrollX; 3322 int oldScrollY = mScrollY; 3323 mScrollX = pinLocX(mScrollX); 3324 mScrollY = pinLocY(mScrollY); 3325 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3326 mUserScroll = false; 3327 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3328 oldScrollY); 3329 } 3330 sendOurVisibleRect(); 3331 } 3332 } 3333 3334 WebViewCore.CursorData cursorData() { 3335 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3336 result.mMoveGeneration = nativeMoveGeneration(); 3337 result.mFrame = nativeCursorFramePointer(); 3338 Point position = nativeCursorPosition(); 3339 result.mX = position.x; 3340 result.mY = position.y; 3341 return result; 3342 } 3343 3344 /** 3345 * Delete text from start to end in the focused textfield. If there is no 3346 * focus, or if start == end, silently fail. If start and end are out of 3347 * order, swap them. 3348 * @param start Beginning of selection to delete. 3349 * @param end End of selection to delete. 3350 */ 3351 /* package */ void deleteSelection(int start, int end) { 3352 mTextGeneration++; 3353 WebViewCore.TextSelectionData data 3354 = new WebViewCore.TextSelectionData(start, end); 3355 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3356 data); 3357 } 3358 3359 /** 3360 * Set the selection to (start, end) in the focused textfield. If start and 3361 * end are out of order, swap them. 3362 * @param start Beginning of selection. 3363 * @param end End of selection. 3364 */ 3365 /* package */ void setSelection(int start, int end) { 3366 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3367 } 3368 3369 @Override 3370 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3371 InputConnection connection = super.onCreateInputConnection(outAttrs); 3372 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3373 return connection; 3374 } 3375 3376 /** 3377 * Called in response to a message from webkit telling us that the soft 3378 * keyboard should be launched. 3379 */ 3380 private void displaySoftKeyboard(boolean isTextView) { 3381 InputMethodManager imm = (InputMethodManager) 3382 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3383 3384 // bring it back to the default scale so that user can enter text 3385 boolean zoom = mActualScale < mDefaultScale; 3386 if (zoom) { 3387 mInZoomOverview = false; 3388 mZoomCenterX = mLastTouchX; 3389 mZoomCenterY = mLastTouchY; 3390 // do not change text wrap scale so that there is no reflow 3391 setNewZoomScale(mDefaultScale, false, false); 3392 } 3393 if (isTextView) { 3394 rebuildWebTextView(); 3395 if (inEditingMode()) { 3396 mWebTextView.setDefaultSelection(); 3397 imm.showSoftInput(mWebTextView, 0); 3398 if (zoom) { 3399 didUpdateTextViewBounds(true); 3400 } 3401 return; 3402 } 3403 } 3404 // Used by plugins. 3405 // Also used if the navigation cache is out of date, and 3406 // does not recognize that a textfield is in focus. In that 3407 // case, use WebView as the targeted view. 3408 // see http://b/issue?id=2457459 3409 imm.showSoftInput(this, 0); 3410 } 3411 3412 // Called by WebKit to instruct the UI to hide the keyboard 3413 private void hideSoftKeyboard() { 3414 InputMethodManager imm = (InputMethodManager) 3415 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3416 3417 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3418 } 3419 3420 /* 3421 * This method checks the current focus and cursor and potentially rebuilds 3422 * mWebTextView to have the appropriate properties, such as password, 3423 * multiline, and what text it contains. It also removes it if necessary. 3424 */ 3425 /* package */ void rebuildWebTextView() { 3426 // If the WebView does not have focus, do nothing until it gains focus. 3427 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3428 return; 3429 } 3430 boolean alreadyThere = inEditingMode(); 3431 // inEditingMode can only return true if mWebTextView is non-null, 3432 // so we can safely call remove() if (alreadyThere) 3433 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3434 if (alreadyThere) { 3435 mWebTextView.remove(); 3436 } 3437 return; 3438 } 3439 // At this point, we know we have found an input field, so go ahead 3440 // and create the WebTextView if necessary. 3441 if (mWebTextView == null) { 3442 mWebTextView = new WebTextView(mContext, WebView.this); 3443 // Initialize our generation number. 3444 mTextGeneration = 0; 3445 } 3446 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3447 contentToViewDimension(nativeFocusCandidateTextSize())); 3448 Rect visibleRect = new Rect(); 3449 calcOurContentVisibleRect(visibleRect); 3450 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3451 // should be in content coordinates. 3452 Rect bounds = nativeFocusCandidateNodeBounds(); 3453 Rect vBox = contentToViewRect(bounds); 3454 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3455 if (!Rect.intersects(bounds, visibleRect)) { 3456 mWebTextView.bringIntoView(); 3457 } 3458 String text = nativeFocusCandidateText(); 3459 int nodePointer = nativeFocusCandidatePointer(); 3460 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3461 // It is possible that we have the same textfield, but it has moved, 3462 // i.e. In the case of opening/closing the screen. 3463 // In that case, we need to set the dimensions, but not the other 3464 // aspects. 3465 // If the text has been changed by webkit, update it. However, if 3466 // there has been more UI text input, ignore it. We will receive 3467 // another update when that text is recognized. 3468 if (text != null && !text.equals(mWebTextView.getText().toString()) 3469 && nativeTextGeneration() == mTextGeneration) { 3470 mWebTextView.setTextAndKeepSelection(text); 3471 } 3472 } else { 3473 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3474 Gravity.RIGHT : Gravity.NO_GRAVITY); 3475 // This needs to be called before setType, which may call 3476 // requestFormData, and it needs to have the correct nodePointer. 3477 mWebTextView.setNodePointer(nodePointer); 3478 mWebTextView.setType(nativeFocusCandidateType()); 3479 if (null == text) { 3480 if (DebugFlags.WEB_VIEW) { 3481 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3482 } 3483 text = ""; 3484 } 3485 mWebTextView.setTextAndKeepSelection(text); 3486 InputMethodManager imm = InputMethodManager.peekInstance(); 3487 if (imm != null && imm.isActive(mWebTextView)) { 3488 imm.restartInput(mWebTextView); 3489 } 3490 } 3491 mWebTextView.requestFocus(); 3492 } 3493 3494 /** 3495 * Called by WebTextView to find saved form data associated with the 3496 * textfield 3497 * @param name Name of the textfield. 3498 * @param nodePointer Pointer to the node of the textfield, so it can be 3499 * compared to the currently focused textfield when the data is 3500 * retrieved. 3501 */ 3502 /* package */ void requestFormData(String name, int nodePointer) { 3503 if (mWebViewCore.getSettings().getSaveFormData()) { 3504 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3505 update.arg1 = nodePointer; 3506 RequestFormData updater = new RequestFormData(name, getUrl(), 3507 update); 3508 Thread t = new Thread(updater); 3509 t.start(); 3510 } 3511 } 3512 3513 /** 3514 * Pass a message to find out the <label> associated with the <input> 3515 * identified by nodePointer 3516 * @param framePointer Pointer to the frame containing the <input> node 3517 * @param nodePointer Pointer to the node for which a <label> is desired. 3518 */ 3519 /* package */ void requestLabel(int framePointer, int nodePointer) { 3520 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3521 nodePointer); 3522 } 3523 3524 /* 3525 * This class requests an Adapter for the WebTextView which shows past 3526 * entries stored in the database. It is a Runnable so that it can be done 3527 * in its own thread, without slowing down the UI. 3528 */ 3529 private class RequestFormData implements Runnable { 3530 private String mName; 3531 private String mUrl; 3532 private Message mUpdateMessage; 3533 3534 public RequestFormData(String name, String url, Message msg) { 3535 mName = name; 3536 mUrl = url; 3537 mUpdateMessage = msg; 3538 } 3539 3540 public void run() { 3541 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3542 if (pastEntries.size() > 0) { 3543 AutoCompleteAdapter adapter = new 3544 AutoCompleteAdapter(mContext, pastEntries); 3545 mUpdateMessage.obj = adapter; 3546 mUpdateMessage.sendToTarget(); 3547 } 3548 } 3549 } 3550 3551 /** 3552 * Dump the display tree to "/sdcard/displayTree.txt" 3553 * 3554 * @hide debug only 3555 */ 3556 public void dumpDisplayTree() { 3557 nativeDumpDisplayTree(getUrl()); 3558 } 3559 3560 /** 3561 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 3562 * "/sdcard/domTree.txt" 3563 * 3564 * @hide debug only 3565 */ 3566 public void dumpDomTree(boolean toFile) { 3567 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 3568 } 3569 3570 /** 3571 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 3572 * to "/sdcard/renderTree.txt" 3573 * 3574 * @hide debug only 3575 */ 3576 public void dumpRenderTree(boolean toFile) { 3577 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 3578 } 3579 3580 /** 3581 * Dump the V8 counters to standard output. 3582 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 3583 * true. Otherwise, this will do nothing. 3584 * 3585 * @hide debug only 3586 */ 3587 public void dumpV8Counters() { 3588 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 3589 } 3590 3591 // This is used to determine long press with the center key. Does not 3592 // affect long press with the trackball/touch. 3593 private boolean mGotCenterDown = false; 3594 3595 @Override 3596 public boolean onKeyDown(int keyCode, KeyEvent event) { 3597 if (DebugFlags.WEB_VIEW) { 3598 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3599 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3600 } 3601 3602 if (mNativeClass == 0) { 3603 return false; 3604 } 3605 3606 // do this hack up front, so it always works, regardless of touch-mode 3607 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3608 mAutoRedraw = !mAutoRedraw; 3609 if (mAutoRedraw) { 3610 invalidate(); 3611 } 3612 return true; 3613 } 3614 3615 // Bubble up the key event if 3616 // 1. it is a system key; or 3617 // 2. the host application wants to handle it; 3618 if (event.isSystem() 3619 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3620 return false; 3621 } 3622 3623 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3624 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3625 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3626 setUpSelectXY(); 3627 } 3628 3629 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3630 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3631 // always handle the navigation keys in the UI thread 3632 switchOutDrawHistory(); 3633 if (mShiftIsPressed) { 3634 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 3635 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 3636 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 3637 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 3638 int multiplier = event.getRepeatCount() + 1; 3639 moveSelection(xRate * multiplier, yRate * multiplier); 3640 return true; 3641 } 3642 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3643 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3644 return true; 3645 } 3646 // Bubble up the key event as WebView doesn't handle it 3647 return false; 3648 } 3649 3650 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3651 switchOutDrawHistory(); 3652 if (event.getRepeatCount() == 0) { 3653 if (mShiftIsPressed) { 3654 return true; // discard press if copy in progress 3655 } 3656 mGotCenterDown = true; 3657 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3658 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3659 // Already checked mNativeClass, so we do not need to check it 3660 // again. 3661 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3662 return true; 3663 } 3664 // Bubble up the key event as WebView doesn't handle it 3665 return false; 3666 } 3667 3668 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3669 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3670 // turn off copy select if a shift-key combo is pressed 3671 mExtendSelection = mShiftIsPressed = false; 3672 if (mTouchMode == TOUCH_SELECT_MODE) { 3673 mTouchMode = TOUCH_INIT_MODE; 3674 } 3675 } 3676 3677 if (getSettings().getNavDump()) { 3678 switch (keyCode) { 3679 case KeyEvent.KEYCODE_4: 3680 dumpDisplayTree(); 3681 break; 3682 case KeyEvent.KEYCODE_5: 3683 case KeyEvent.KEYCODE_6: 3684 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 3685 break; 3686 case KeyEvent.KEYCODE_7: 3687 case KeyEvent.KEYCODE_8: 3688 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 3689 break; 3690 case KeyEvent.KEYCODE_9: 3691 nativeInstrumentReport(); 3692 return true; 3693 } 3694 } 3695 3696 if (nativeCursorIsTextInput()) { 3697 // This message will put the node in focus, for the DOM's notion 3698 // of focus, and make the focuscontroller active 3699 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3700 nativeCursorNodePointer()); 3701 // This will bring up the WebTextView and put it in focus, for 3702 // our view system's notion of focus 3703 rebuildWebTextView(); 3704 // Now we need to pass the event to it 3705 if (inEditingMode()) { 3706 mWebTextView.setDefaultSelection(); 3707 return mWebTextView.dispatchKeyEvent(event); 3708 } 3709 } else if (nativeHasFocusNode()) { 3710 // In this case, the cursor is not on a text input, but the focus 3711 // might be. Check it, and if so, hand over to the WebTextView. 3712 rebuildWebTextView(); 3713 if (inEditingMode()) { 3714 mWebTextView.setDefaultSelection(); 3715 return mWebTextView.dispatchKeyEvent(event); 3716 } 3717 } 3718 3719 // TODO: should we pass all the keys to DOM or check the meta tag 3720 if (nativeCursorWantsKeyEvents() || true) { 3721 // pass the key to DOM 3722 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3723 // return true as DOM handles the key 3724 return true; 3725 } 3726 3727 // Bubble up the key event as WebView doesn't handle it 3728 return false; 3729 } 3730 3731 @Override 3732 public boolean onKeyUp(int keyCode, KeyEvent event) { 3733 if (DebugFlags.WEB_VIEW) { 3734 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3735 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3736 } 3737 3738 if (mNativeClass == 0) { 3739 return false; 3740 } 3741 3742 // special CALL handling when cursor node's href is "tel:XXX" 3743 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3744 String text = nativeCursorText(); 3745 if (!nativeCursorIsTextInput() && text != null 3746 && text.startsWith(SCHEME_TEL)) { 3747 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3748 getContext().startActivity(intent); 3749 return true; 3750 } 3751 } 3752 3753 // Bubble up the key event if 3754 // 1. it is a system key; or 3755 // 2. the host application wants to handle it; 3756 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3757 return false; 3758 } 3759 3760 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3761 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3762 if (commitCopy()) { 3763 return true; 3764 } 3765 } 3766 3767 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3768 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3769 // always handle the navigation keys in the UI thread 3770 // Bubble up the key event as WebView doesn't handle it 3771 return false; 3772 } 3773 3774 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3775 // remove the long press message first 3776 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3777 mGotCenterDown = false; 3778 3779 if (mShiftIsPressed) { 3780 if (mExtendSelection) { 3781 commitCopy(); 3782 } else { 3783 mExtendSelection = true; 3784 invalidate(); // draw the i-beam instead of the arrow 3785 } 3786 return true; // discard press if copy in progress 3787 } 3788 3789 // perform the single click 3790 Rect visibleRect = sendOurVisibleRect(); 3791 // Note that sendOurVisibleRect calls viewToContent, so the 3792 // coordinates should be in content coordinates. 3793 if (!nativeCursorIntersects(visibleRect)) { 3794 return false; 3795 } 3796 WebViewCore.CursorData data = cursorData(); 3797 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3798 playSoundEffect(SoundEffectConstants.CLICK); 3799 if (nativeCursorIsTextInput()) { 3800 rebuildWebTextView(); 3801 centerKeyPressOnTextField(); 3802 if (inEditingMode()) { 3803 mWebTextView.setDefaultSelection(); 3804 } 3805 return true; 3806 } 3807 clearTextEntry(true); 3808 nativeSetFollowedLink(true); 3809 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 3810 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3811 nativeCursorNodePointer()); 3812 } 3813 return true; 3814 } 3815 3816 // TODO: should we pass all the keys to DOM or check the meta tag 3817 if (nativeCursorWantsKeyEvents() || true) { 3818 // pass the key to DOM 3819 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3820 // return true as DOM handles the key 3821 return true; 3822 } 3823 3824 // Bubble up the key event as WebView doesn't handle it 3825 return false; 3826 } 3827 3828 private void setUpSelectXY() { 3829 mExtendSelection = false; 3830 mShiftIsPressed = true; 3831 if (nativeHasCursorNode()) { 3832 Rect rect = nativeCursorNodeBounds(); 3833 mSelectX = contentToViewX(rect.left); 3834 mSelectY = contentToViewY(rect.top); 3835 } else if (mLastTouchY > getVisibleTitleHeight()) { 3836 mSelectX = mScrollX + (int) mLastTouchX; 3837 mSelectY = mScrollY + (int) mLastTouchY; 3838 } else { 3839 mSelectX = mScrollX + getViewWidth() / 2; 3840 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 3841 } 3842 nativeHideCursor(); 3843 } 3844 3845 public void emulateShiftHeld() { 3846 if (0 == mNativeClass) return; // client isn't initialized 3847 setUpSelectXY(); 3848 } 3849 3850 private boolean commitCopy() { 3851 boolean copiedSomething = false; 3852 if (mExtendSelection) { 3853 String selection = nativeGetSelection(); 3854 if (selection != "") { 3855 if (DebugFlags.WEB_VIEW) { 3856 Log.v(LOGTAG, "commitCopy \"" + selection + "\""); 3857 } 3858 Toast.makeText(mContext 3859 , com.android.internal.R.string.text_copied 3860 , Toast.LENGTH_SHORT).show(); 3861 copiedSomething = true; 3862 try { 3863 IClipboard clip = IClipboard.Stub.asInterface( 3864 ServiceManager.getService("clipboard")); 3865 clip.setClipboardText(selection); 3866 } catch (android.os.RemoteException e) { 3867 Log.e(LOGTAG, "Clipboard failed", e); 3868 } 3869 } 3870 mExtendSelection = false; 3871 } 3872 mShiftIsPressed = false; 3873 invalidate(); // remove selection region and pointer 3874 if (mTouchMode == TOUCH_SELECT_MODE) { 3875 mTouchMode = TOUCH_INIT_MODE; 3876 } 3877 return copiedSomething; 3878 } 3879 3880 @Override 3881 protected void onAttachedToWindow() { 3882 super.onAttachedToWindow(); 3883 if (hasWindowFocus()) onWindowFocusChanged(true); 3884 } 3885 3886 @Override 3887 protected void onDetachedFromWindow() { 3888 clearTextEntry(false); 3889 super.onDetachedFromWindow(); 3890 // Clean up the zoom controller 3891 mZoomButtonsController.setVisible(false); 3892 } 3893 3894 /** 3895 * @deprecated WebView no longer needs to implement 3896 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3897 */ 3898 @Deprecated 3899 public void onChildViewAdded(View parent, View child) {} 3900 3901 /** 3902 * @deprecated WebView no longer needs to implement 3903 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3904 */ 3905 @Deprecated 3906 public void onChildViewRemoved(View p, View child) {} 3907 3908 /** 3909 * @deprecated WebView should not have implemented 3910 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3911 * does nothing now. 3912 */ 3913 @Deprecated 3914 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3915 } 3916 3917 // To avoid drawing the cursor ring, and remove the TextView when our window 3918 // loses focus. 3919 @Override 3920 public void onWindowFocusChanged(boolean hasWindowFocus) { 3921 if (hasWindowFocus) { 3922 if (hasFocus()) { 3923 // If our window regained focus, and we have focus, then begin 3924 // drawing the cursor ring 3925 mDrawCursorRing = true; 3926 if (mNativeClass != 0) { 3927 nativeRecordButtons(true, false, true); 3928 if (inEditingMode()) { 3929 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3930 } 3931 } 3932 } else { 3933 // If our window gained focus, but we do not have it, do not 3934 // draw the cursor ring. 3935 mDrawCursorRing = false; 3936 // We do not call nativeRecordButtons here because we assume 3937 // that when we lost focus, or window focus, it got called with 3938 // false for the first parameter 3939 } 3940 } else { 3941 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3942 /* 3943 * The zoom controls come in their own window, so our window 3944 * loses focus. Our policy is to not draw the cursor ring if 3945 * our window is not focused, but this is an exception since 3946 * the user can still navigate the web page with the zoom 3947 * controls showing. 3948 */ 3949 // If our window has lost focus, stop drawing the cursor ring 3950 mDrawCursorRing = false; 3951 } 3952 mGotKeyDown = false; 3953 mShiftIsPressed = false; 3954 if (mNativeClass != 0) { 3955 nativeRecordButtons(false, false, true); 3956 } 3957 setFocusControllerInactive(); 3958 } 3959 invalidate(); 3960 super.onWindowFocusChanged(hasWindowFocus); 3961 } 3962 3963 /* 3964 * Pass a message to WebCore Thread, telling the WebCore::Page's 3965 * FocusController to be "inactive" so that it will 3966 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3967 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3968 */ 3969 /* package */ void setFocusControllerInactive() { 3970 // Do not need to also check whether mWebViewCore is null, because 3971 // mNativeClass is only set if mWebViewCore is non null 3972 if (mNativeClass == 0) return; 3973 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 3974 } 3975 3976 @Override 3977 protected void onFocusChanged(boolean focused, int direction, 3978 Rect previouslyFocusedRect) { 3979 if (DebugFlags.WEB_VIEW) { 3980 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3981 } 3982 if (focused) { 3983 // When we regain focus, if we have window focus, resume drawing 3984 // the cursor ring 3985 if (hasWindowFocus()) { 3986 mDrawCursorRing = true; 3987 if (mNativeClass != 0) { 3988 nativeRecordButtons(true, false, true); 3989 } 3990 //} else { 3991 // The WebView has gained focus while we do not have 3992 // windowfocus. When our window lost focus, we should have 3993 // called nativeRecordButtons(false...) 3994 } 3995 } else { 3996 // When we lost focus, unless focus went to the TextView (which is 3997 // true if we are in editing mode), stop drawing the cursor ring. 3998 if (!inEditingMode()) { 3999 mDrawCursorRing = false; 4000 if (mNativeClass != 0) { 4001 nativeRecordButtons(false, false, true); 4002 } 4003 setFocusControllerInactive(); 4004 } 4005 mGotKeyDown = false; 4006 } 4007 4008 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4009 } 4010 4011 /** 4012 * @hide 4013 */ 4014 @Override 4015 protected boolean setFrame(int left, int top, int right, int bottom) { 4016 boolean changed = super.setFrame(left, top, right, bottom); 4017 if (!changed && mHeightCanMeasure) { 4018 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4019 // in WebViewCore after we get the first layout. We do call 4020 // requestLayout() when we get contentSizeChanged(). But the View 4021 // system won't call onSizeChanged if the dimension is not changed. 4022 // In this case, we need to call sendViewSizeZoom() explicitly to 4023 // notify the WebKit about the new dimensions. 4024 sendViewSizeZoom(); 4025 } 4026 return changed; 4027 } 4028 4029 private static class PostScale implements Runnable { 4030 final WebView mWebView; 4031 final boolean mUpdateTextWrap; 4032 4033 public PostScale(WebView webView, boolean updateTextWrap) { 4034 mWebView = webView; 4035 mUpdateTextWrap = updateTextWrap; 4036 } 4037 4038 public void run() { 4039 if (mWebView.mWebViewCore != null) { 4040 // we always force, in case our height changed, in which case we 4041 // still want to send the notification over to webkit. 4042 mWebView.setNewZoomScale(mWebView.mActualScale, 4043 mUpdateTextWrap, true); 4044 // update the zoom buttons as the scale can be changed 4045 if (mWebView.getSettings().getBuiltInZoomControls()) { 4046 mWebView.updateZoomButtonsEnabled(); 4047 } 4048 } 4049 } 4050 } 4051 4052 @Override 4053 protected void onSizeChanged(int w, int h, int ow, int oh) { 4054 super.onSizeChanged(w, h, ow, oh); 4055 // Center zooming to the center of the screen. 4056 if (mZoomScale == 0) { // unless we're already zooming 4057 // To anchor at top left corner. 4058 mZoomCenterX = 0; 4059 mZoomCenterY = getVisibleTitleHeight(); 4060 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4061 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4062 } 4063 4064 // adjust the max viewport width depending on the view dimensions. This 4065 // is to ensure the scaling is not going insane. So do not shrink it if 4066 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4067 int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE); 4068 if (newMaxViewportWidth > sMaxViewportWidth) { 4069 sMaxViewportWidth = newMaxViewportWidth; 4070 } 4071 4072 // update mMinZoomScale if the minimum zoom scale is not fixed 4073 if (!mMinZoomScaleFixed) { 4074 // when change from narrow screen to wide screen, the new viewWidth 4075 // can be wider than the old content width. We limit the minimum 4076 // scale to 1.0f. The proper minimum scale will be calculated when 4077 // the new picture shows up. 4078 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 4079 / (mDrawHistory ? mHistoryPicture.getWidth() 4080 : mZoomOverviewWidth)); 4081 if (mInitialScaleInPercent > 0) { 4082 // limit the minZoomScale to the initialScale if it is set 4083 float initialScale = mInitialScaleInPercent / 100.0f; 4084 if (mMinZoomScale > initialScale) { 4085 mMinZoomScale = initialScale; 4086 } 4087 } 4088 } 4089 4090 // onSizeChanged() is called during WebView layout. And any 4091 // requestLayout() is blocked during layout. As setNewZoomScale() will 4092 // call its child View to reposition itself through ViewManager's 4093 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 4094 // <b/> 4095 // only update the text wrap scale if width changed. 4096 post(new PostScale(this, w != ow)); 4097 } 4098 4099 @Override 4100 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4101 super.onScrollChanged(l, t, oldl, oldt); 4102 sendOurVisibleRect(); 4103 // update WebKit if visible title bar height changed. The logic is same 4104 // as getVisibleTitleHeight. 4105 int titleHeight = getTitleHeight(); 4106 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4107 sendViewSizeZoom(); 4108 } 4109 } 4110 4111 @Override 4112 public boolean dispatchKeyEvent(KeyEvent event) { 4113 boolean dispatch = true; 4114 4115 if (!inEditingMode()) { 4116 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4117 mGotKeyDown = true; 4118 } else { 4119 if (!mGotKeyDown) { 4120 /* 4121 * We got a key up for which we were not the recipient of 4122 * the original key down. Don't give it to the view. 4123 */ 4124 dispatch = false; 4125 } 4126 mGotKeyDown = false; 4127 } 4128 } 4129 4130 if (dispatch) { 4131 return super.dispatchKeyEvent(event); 4132 } else { 4133 // We didn't dispatch, so let something else handle the key 4134 return false; 4135 } 4136 } 4137 4138 // Here are the snap align logic: 4139 // 1. If it starts nearly horizontally or vertically, snap align; 4140 // 2. If there is a dramitic direction change, let it go; 4141 // 3. If there is a same direction back and forth, lock it. 4142 4143 // adjustable parameters 4144 private int mMinLockSnapReverseDistance; 4145 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4146 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4147 4148 private static int sign(float x) { 4149 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4150 } 4151 4152 // if the page can scroll <= this value, we won't allow the drag tracker 4153 // to have any effect. 4154 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4155 4156 private class DragTrackerHandler { 4157 private final DragTracker mProxy; 4158 private final float mStartY, mStartX; 4159 private final float mMinDY, mMinDX; 4160 private final float mMaxDY, mMaxDX; 4161 private float mCurrStretchY, mCurrStretchX; 4162 private int mSX, mSY; 4163 private Interpolator mInterp; 4164 private float[] mXY = new float[2]; 4165 4166 // inner (non-state) classes can't have enums :( 4167 private static final int DRAGGING_STATE = 0; 4168 private static final int ANIMATING_STATE = 1; 4169 private static final int FINISHED_STATE = 2; 4170 private int mState; 4171 4172 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4173 mProxy = proxy; 4174 4175 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4176 int viewTop = getScrollY(); 4177 int viewBottom = viewTop + getHeight(); 4178 4179 mStartY = y; 4180 mMinDY = -viewTop; 4181 mMaxDY = docBottom - viewBottom; 4182 4183 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4184 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4185 " up/down= " + mMinDY + " " + mMaxDY); 4186 } 4187 4188 int docRight = computeHorizontalScrollRange(); 4189 int viewLeft = getScrollX(); 4190 int viewRight = viewLeft + getWidth(); 4191 mStartX = x; 4192 mMinDX = -viewLeft; 4193 mMaxDX = docRight - viewRight; 4194 4195 mState = DRAGGING_STATE; 4196 mProxy.onStartDrag(x, y); 4197 4198 // ensure we buildBitmap at least once 4199 mSX = -99999; 4200 } 4201 4202 private float computeStretch(float delta, float min, float max) { 4203 float stretch = 0; 4204 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4205 if (delta < min) { 4206 stretch = delta - min; 4207 } else if (delta > max) { 4208 stretch = delta - max; 4209 } 4210 } 4211 return stretch; 4212 } 4213 4214 public void dragTo(float x, float y) { 4215 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4216 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4217 4218 if ((mSnapScrollMode & SNAP_X) != 0) { 4219 sy = 0; 4220 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4221 sx = 0; 4222 } 4223 4224 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4225 mCurrStretchX = sx; 4226 mCurrStretchY = sy; 4227 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4228 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4229 " " + sy); 4230 } 4231 if (mProxy.onStretchChange(sx, sy)) { 4232 invalidate(); 4233 } 4234 } 4235 } 4236 4237 public void stopDrag() { 4238 final int DURATION = 200; 4239 int now = (int)SystemClock.uptimeMillis(); 4240 mInterp = new Interpolator(2); 4241 mXY[0] = mCurrStretchX; 4242 mXY[1] = mCurrStretchY; 4243 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4244 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4245 mInterp.setKeyFrame(0, now, mXY, blend); 4246 float[] zerozero = new float[] { 0, 0 }; 4247 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4248 mState = ANIMATING_STATE; 4249 4250 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4251 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4252 } 4253 } 4254 4255 // Call this after each draw. If it ruturns null, the tracker is done 4256 public boolean isFinished() { 4257 return mState == FINISHED_STATE; 4258 } 4259 4260 private int hiddenHeightOfTitleBar() { 4261 return getTitleHeight() - getVisibleTitleHeight(); 4262 } 4263 4264 // need a way to know if 565 or 8888 is the right config for 4265 // capturing the display and giving it to the drag proxy 4266 private Bitmap.Config offscreenBitmapConfig() { 4267 // hard code 565 for now 4268 return Bitmap.Config.RGB_565; 4269 } 4270 4271 /* If the tracker draws, then this returns true, otherwise it will 4272 return false, and draw nothing. 4273 */ 4274 public boolean draw(Canvas canvas) { 4275 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4276 int sx = getScrollX(); 4277 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4278 if (mSX != sx || mSY != sy) { 4279 buildBitmap(sx, sy); 4280 mSX = sx; 4281 mSY = sy; 4282 } 4283 4284 if (mState == ANIMATING_STATE) { 4285 Interpolator.Result result = mInterp.timeToValues(mXY); 4286 if (result == Interpolator.Result.FREEZE_END) { 4287 mState = FINISHED_STATE; 4288 return false; 4289 } else { 4290 mProxy.onStretchChange(mXY[0], mXY[1]); 4291 invalidate(); 4292 // fall through to the draw 4293 } 4294 } 4295 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4296 canvas.translate(sx, sy); 4297 mProxy.onDraw(canvas); 4298 canvas.restoreToCount(count); 4299 return true; 4300 } 4301 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4302 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4303 mCurrStretchX + " " + mCurrStretchY); 4304 } 4305 return false; 4306 } 4307 4308 private void buildBitmap(int sx, int sy) { 4309 int w = getWidth(); 4310 int h = getViewHeight(); 4311 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4312 Canvas canvas = new Canvas(bm); 4313 canvas.translate(-sx, -sy); 4314 drawContent(canvas); 4315 4316 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4317 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4318 " " + sy + " " + w + " " + h); 4319 } 4320 mProxy.onBitmapChange(bm); 4321 } 4322 } 4323 4324 /** @hide */ 4325 public static class DragTracker { 4326 public void onStartDrag(float x, float y) {} 4327 public boolean onStretchChange(float sx, float sy) { 4328 // return true to have us inval the view 4329 return false; 4330 } 4331 public void onStopDrag() {} 4332 public void onBitmapChange(Bitmap bm) {} 4333 public void onDraw(Canvas canvas) {} 4334 } 4335 4336 /** @hide */ 4337 public DragTracker getDragTracker() { 4338 return mDragTracker; 4339 } 4340 4341 /** @hide */ 4342 public void setDragTracker(DragTracker tracker) { 4343 mDragTracker = tracker; 4344 } 4345 4346 private DragTracker mDragTracker; 4347 private DragTrackerHandler mDragTrackerHandler; 4348 4349 private class ScaleDetectorListener implements 4350 ScaleGestureDetector.OnScaleGestureListener { 4351 4352 public boolean onScaleBegin(ScaleGestureDetector detector) { 4353 // cancel the single touch handling 4354 cancelTouch(); 4355 if (mZoomButtonsController.isVisible()) { 4356 mZoomButtonsController.setVisible(false); 4357 } 4358 // reset the zoom overview mode so that the page won't auto grow 4359 mInZoomOverview = false; 4360 // If it is in password mode, turn it off so it does not draw 4361 // misplaced. 4362 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4363 mWebTextView.setInPassword(false); 4364 } 4365 return true; 4366 } 4367 4368 public void onScaleEnd(ScaleGestureDetector detector) { 4369 if (mPreviewZoomOnly) { 4370 mPreviewZoomOnly = false; 4371 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4372 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4373 // don't reflow when zoom in; when zoom out, do reflow if the 4374 // new scale is almost minimum scale; 4375 boolean reflowNow = (mActualScale - mMinZoomScale <= 0.01f) 4376 || ((mActualScale <= 0.8 * mTextWrapScale)); 4377 // force zoom after mPreviewZoomOnly is set to false so that the 4378 // new view size will be passed to the WebKit 4379 setNewZoomScale(mActualScale, reflowNow, true); 4380 // call invalidate() to draw without zoom filter 4381 invalidate(); 4382 } 4383 // adjust the edit text view if needed 4384 if (inEditingMode() && didUpdateTextViewBounds(false) 4385 && nativeFocusCandidateIsPassword()) { 4386 // If it is a password field, start drawing the 4387 // WebTextView once again. 4388 mWebTextView.setInPassword(true); 4389 } 4390 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4391 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4392 // may trigger the unwanted fling. 4393 mTouchMode = TOUCH_PINCH_DRAG; 4394 startTouch(detector.getFocusX(), detector.getFocusY(), 4395 mLastTouchTime); 4396 } 4397 4398 public boolean onScale(ScaleGestureDetector detector) { 4399 float scale = (float) (Math.round(detector.getScaleFactor() 4400 * mActualScale * 100) / 100.0); 4401 if (Math.abs(scale - mActualScale) >= PREVIEW_SCALE_INCREMENT) { 4402 mPreviewZoomOnly = true; 4403 // limit the scale change per step 4404 if (scale > mActualScale) { 4405 scale = Math.min(scale, mActualScale * 1.25f); 4406 } else { 4407 scale = Math.max(scale, mActualScale * 0.8f); 4408 } 4409 mZoomCenterX = detector.getFocusX(); 4410 mZoomCenterY = detector.getFocusY(); 4411 setNewZoomScale(scale, false, false); 4412 invalidate(); 4413 return true; 4414 } 4415 return false; 4416 } 4417 } 4418 4419 @Override 4420 public boolean onTouchEvent(MotionEvent ev) { 4421 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4422 return false; 4423 } 4424 4425 if (DebugFlags.WEB_VIEW) { 4426 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4427 + mTouchMode); 4428 } 4429 4430 int action; 4431 float x, y; 4432 long eventTime = ev.getEventTime(); 4433 4434 // FIXME: we may consider to give WebKit an option to handle multi-touch 4435 // events later. 4436 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 4437 if (mMinZoomScale < mMaxZoomScale) { 4438 mScaleDetector.onTouchEvent(ev); 4439 if (mScaleDetector.isInProgress()) { 4440 mLastTouchTime = eventTime; 4441 return true; 4442 } 4443 x = mScaleDetector.getFocusX(); 4444 y = mScaleDetector.getFocusY(); 4445 action = ev.getAction() & MotionEvent.ACTION_MASK; 4446 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4447 cancelTouch(); 4448 action = MotionEvent.ACTION_DOWN; 4449 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4450 // set mLastTouchX/Y to the remaining point 4451 mLastTouchX = x; 4452 mLastTouchY = y; 4453 } else if (action == MotionEvent.ACTION_MOVE) { 4454 // negative x or y indicate it is on the edge, skip it. 4455 if (x < 0 || y < 0) { 4456 return true; 4457 } 4458 } 4459 } else { 4460 // if the page disallow zoom, skip multi-pointer action 4461 return true; 4462 } 4463 } else { 4464 action = ev.getAction(); 4465 x = ev.getX(); 4466 y = ev.getY(); 4467 } 4468 4469 // Due to the touch screen edge effect, a touch closer to the edge 4470 // always snapped to the edge. As getViewWidth() can be different from 4471 // getWidth() due to the scrollbar, adjusting the point to match 4472 // getViewWidth(). Same applied to the height. 4473 if (x > getViewWidth() - 1) { 4474 x = getViewWidth() - 1; 4475 } 4476 if (y > getViewHeightWithTitle() - 1) { 4477 y = getViewHeightWithTitle() - 1; 4478 } 4479 4480 // pass the touch events from UI thread to WebCore thread 4481 if (mForwardTouchEvents 4482 && (action != MotionEvent.ACTION_MOVE || eventTime 4483 - mLastSentTouchTime > mCurrentTouchInterval) 4484 && (action == MotionEvent.ACTION_DOWN 4485 || mPreventDrag != PREVENT_DRAG_CANCEL)) { 4486 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 4487 ted.mAction = action; 4488 ted.mX = viewToContentX((int) x + mScrollX); 4489 ted.mY = viewToContentY((int) y + mScrollY); 4490 ted.mEventTime = eventTime; 4491 ted.mMetaState = ev.getMetaState(); 4492 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4493 mLastSentTouchTime = eventTime; 4494 } 4495 4496 float fDeltaX = mLastTouchX - x; 4497 float fDeltaY = mLastTouchY - y; 4498 int deltaX = (int) fDeltaX; 4499 int deltaY = (int) fDeltaY; 4500 4501 switch (action) { 4502 case MotionEvent.ACTION_DOWN: { 4503 mPreventDrag = PREVENT_DRAG_NO; 4504 if (!mScroller.isFinished()) { 4505 // stop the current scroll animation, but if this is 4506 // the start of a fling, allow it to add to the current 4507 // fling's velocity 4508 mScroller.abortAnimation(); 4509 mTouchMode = TOUCH_DRAG_START_MODE; 4510 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 4511 } else if (mShiftIsPressed) { 4512 mSelectX = mScrollX + (int) x; 4513 mSelectY = mScrollY + (int) y; 4514 mTouchMode = TOUCH_SELECT_MODE; 4515 if (DebugFlags.WEB_VIEW) { 4516 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 4517 } 4518 nativeMoveSelection(viewToContentX(mSelectX), 4519 viewToContentY(mSelectY), false); 4520 mTouchSelection = mExtendSelection = true; 4521 invalidate(); // draw the i-beam instead of the arrow 4522 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4523 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4524 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4525 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4526 } else { 4527 // commit the short press action for the previous tap 4528 doShortPress(); 4529 // continue, mTouchMode should be still TOUCH_INIT_MODE 4530 } 4531 } else { 4532 mPreviewZoomOnly = false; 4533 mTouchMode = TOUCH_INIT_MODE; 4534 mPreventDrag = mForwardTouchEvents ? PREVENT_DRAG_MAYBE_YES 4535 : PREVENT_DRAG_NO; 4536 mPreventLongPress = false; 4537 mPreventDoubleTap = false; 4538 mWebViewCore.sendMessage( 4539 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4540 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4541 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 4542 (eventTime - mLastTouchUpTime), eventTime); 4543 } 4544 } 4545 // Trigger the link 4546 if (mTouchMode == TOUCH_INIT_MODE 4547 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4548 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4549 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 4550 } 4551 startTouch(x, y, eventTime); 4552 break; 4553 } 4554 case MotionEvent.ACTION_MOVE: { 4555 if (mTouchMode == TOUCH_DONE_MODE) { 4556 // no dragging during scroll zoom animation 4557 break; 4558 } 4559 mVelocityTracker.addMovement(ev); 4560 4561 if (mTouchMode != TOUCH_DRAG_MODE) { 4562 if (mTouchMode == TOUCH_SELECT_MODE) { 4563 mSelectX = mScrollX + (int) x; 4564 mSelectY = mScrollY + (int) y; 4565 if (DebugFlags.WEB_VIEW) { 4566 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 4567 } 4568 nativeMoveSelection(viewToContentX(mSelectX), 4569 viewToContentY(mSelectY), true); 4570 invalidate(); 4571 break; 4572 } 4573 if ((deltaX * deltaX + deltaY * deltaY) < mTouchSlopSquare) { 4574 break; 4575 } 4576 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 4577 // track mLastTouchTime as we may need to do fling at 4578 // ACTION_UP 4579 mLastTouchTime = eventTime; 4580 break; 4581 } 4582 if (mTouchMode == TOUCH_SHORTPRESS_MODE 4583 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4584 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4585 } else if (mTouchMode == TOUCH_INIT_MODE 4586 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4587 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4588 } 4589 if (mFullScreenHolder != null) { 4590 // in full screen mode, the WebView can't be panned. 4591 mTouchMode = TOUCH_DONE_MODE; 4592 break; 4593 } 4594 4595 // if it starts nearly horizontal or vertical, enforce it 4596 int ax = Math.abs(deltaX); 4597 int ay = Math.abs(deltaY); 4598 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4599 mSnapScrollMode = SNAP_X; 4600 mSnapPositive = deltaX > 0; 4601 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4602 mSnapScrollMode = SNAP_Y; 4603 mSnapPositive = deltaY > 0; 4604 } 4605 4606 mTouchMode = TOUCH_DRAG_MODE; 4607 mLastTouchX = x; 4608 mLastTouchY = y; 4609 fDeltaX = 0.0f; 4610 fDeltaY = 0.0f; 4611 deltaX = 0; 4612 deltaY = 0; 4613 4614 WebViewCore.reducePriority(); 4615 if (!mDragFromTextInput) { 4616 nativeHideCursor(); 4617 } 4618 WebSettings settings = getSettings(); 4619 if (settings.supportZoom() 4620 && settings.getBuiltInZoomControls() 4621 && !mZoomButtonsController.isVisible() 4622 && mMinZoomScale < mMaxZoomScale) { 4623 mZoomButtonsController.setVisible(true); 4624 int count = settings.getDoubleTapToastCount(); 4625 if (mInZoomOverview && count > 0) { 4626 settings.setDoubleTapToastCount(--count); 4627 Toast.makeText(mContext, 4628 com.android.internal.R.string.double_tap_toast, 4629 Toast.LENGTH_LONG).show(); 4630 } 4631 } 4632 } 4633 4634 // do pan 4635 int newScrollX = pinLocX(mScrollX + deltaX); 4636 int newDeltaX = newScrollX - mScrollX; 4637 if (deltaX != newDeltaX) { 4638 deltaX = newDeltaX; 4639 fDeltaX = (float) newDeltaX; 4640 } 4641 int newScrollY = pinLocY(mScrollY + deltaY); 4642 int newDeltaY = newScrollY - mScrollY; 4643 if (deltaY != newDeltaY) { 4644 deltaY = newDeltaY; 4645 fDeltaY = (float) newDeltaY; 4646 } 4647 boolean done = false; 4648 boolean keepScrollBarsVisible = false; 4649 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 4650 keepScrollBarsVisible = done = true; 4651 } else { 4652 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4653 int ax = Math.abs(deltaX); 4654 int ay = Math.abs(deltaY); 4655 if (mSnapScrollMode == SNAP_X) { 4656 // radical change means getting out of snap mode 4657 if (ay > MAX_SLOPE_FOR_DIAG * ax 4658 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4659 mSnapScrollMode = SNAP_NONE; 4660 } 4661 // reverse direction means lock in the snap mode 4662 if (ax > MAX_SLOPE_FOR_DIAG * ay && 4663 (mSnapPositive 4664 ? deltaX < -mMinLockSnapReverseDistance 4665 : deltaX > mMinLockSnapReverseDistance)) { 4666 mSnapScrollMode |= SNAP_LOCK; 4667 } 4668 } else { 4669 // radical change means getting out of snap mode 4670 if (ax > MAX_SLOPE_FOR_DIAG * ay 4671 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4672 mSnapScrollMode = SNAP_NONE; 4673 } 4674 // reverse direction means lock in the snap mode 4675 if (ay > MAX_SLOPE_FOR_DIAG * ax && 4676 (mSnapPositive 4677 ? deltaY < -mMinLockSnapReverseDistance 4678 : deltaY > mMinLockSnapReverseDistance)) { 4679 mSnapScrollMode |= SNAP_LOCK; 4680 } 4681 } 4682 } 4683 if (mSnapScrollMode != SNAP_NONE) { 4684 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 4685 deltaY = 0; 4686 } else { 4687 deltaX = 0; 4688 } 4689 } 4690 if ((deltaX | deltaY) != 0) { 4691 scrollBy(deltaX, deltaY); 4692 if (deltaX != 0) { 4693 mLastTouchX = x; 4694 } 4695 if (deltaY != 0) { 4696 mLastTouchY = y; 4697 } 4698 mHeldMotionless = MOTIONLESS_FALSE; 4699 } else { 4700 // keep the scrollbar on the screen even there is no 4701 // scroll 4702 keepScrollBarsVisible = true; 4703 } 4704 mLastTouchTime = eventTime; 4705 mUserScroll = true; 4706 } 4707 4708 if (!getSettings().getBuiltInZoomControls()) { 4709 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 4710 if (mZoomControls != null && showPlusMinus) { 4711 if (mZoomControls.getVisibility() == View.VISIBLE) { 4712 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4713 } else { 4714 mZoomControls.show(showPlusMinus, false); 4715 } 4716 mPrivateHandler.postDelayed(mZoomControlRunnable, 4717 ZOOM_CONTROLS_TIMEOUT); 4718 } 4719 } 4720 4721 if (mDragTrackerHandler != null) { 4722 mDragTrackerHandler.dragTo(x, y); 4723 } 4724 4725 if (keepScrollBarsVisible) { 4726 if (mHeldMotionless != MOTIONLESS_TRUE) { 4727 mHeldMotionless = MOTIONLESS_TRUE; 4728 invalidate(); 4729 } 4730 // keep the scrollbar on the screen even there is no scroll 4731 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 4732 false); 4733 // return false to indicate that we can't pan out of the 4734 // view space 4735 return !done; 4736 } 4737 break; 4738 } 4739 case MotionEvent.ACTION_UP: { 4740 if (mDragTrackerHandler != null) { 4741 mDragTrackerHandler.stopDrag(); 4742 } 4743 mLastTouchUpTime = eventTime; 4744 switch (mTouchMode) { 4745 case TOUCH_DOUBLE_TAP_MODE: // double tap 4746 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4747 mTouchMode = TOUCH_DONE_MODE; 4748 if (mPreventDoubleTap) { 4749 WebViewCore.TouchEventData ted 4750 = new WebViewCore.TouchEventData(); 4751 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 4752 ted.mX = viewToContentX((int) x + mScrollX); 4753 ted.mY = viewToContentY((int) y + mScrollY); 4754 ted.mEventTime = eventTime; 4755 ted.mMetaState = ev.getMetaState(); 4756 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4757 } else if (mFullScreenHolder == null) { 4758 doDoubleTap(); 4759 } 4760 break; 4761 case TOUCH_SELECT_MODE: 4762 commitCopy(); 4763 mTouchSelection = false; 4764 break; 4765 case TOUCH_INIT_MODE: // tap 4766 case TOUCH_SHORTPRESS_START_MODE: 4767 case TOUCH_SHORTPRESS_MODE: 4768 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4769 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4770 if ((deltaX * deltaX + deltaY * deltaY) > mTouchSlopSquare) { 4771 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 4772 " WebCore's response for touch down."); 4773 if (mFullScreenHolder == null 4774 && (computeHorizontalScrollExtent() < computeHorizontalScrollRange() 4775 || computeVerticalScrollExtent() < computeVerticalScrollRange())) { 4776 // remove the pending TOUCH_EVENT and send a 4777 // cancel 4778 mWebViewCore 4779 .removeMessages(EventHub.TOUCH_EVENT); 4780 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 4781 ted.mAction = MotionEvent.ACTION_CANCEL; 4782 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, 4783 ted); 4784 // we will not rewrite drag code here, but we 4785 // will try fling if it applies. 4786 WebViewCore.reducePriority(); 4787 // fall through to TOUCH_DRAG_MODE 4788 } else { 4789 break; 4790 } 4791 } else { 4792 // mPreventDrag can be PREVENT_DRAG_MAYBE_YES in 4793 // TOUCH_INIT_MODE. To give WebCoreThread a little 4794 // more time to send PREVENT_TOUCH_ID, we check 4795 // again in responding RELEASE_SINGLE_TAP. 4796 if (mPreventDrag != PREVENT_DRAG_YES) { 4797 if (mTouchMode == TOUCH_INIT_MODE) { 4798 mPrivateHandler.sendMessageDelayed( 4799 mPrivateHandler.obtainMessage( 4800 RELEASE_SINGLE_TAP), 4801 ViewConfiguration.getDoubleTapTimeout()); 4802 } else { 4803 mTouchMode = TOUCH_DONE_MODE; 4804 doShortPress(); 4805 } 4806 } 4807 break; 4808 } 4809 case TOUCH_DRAG_MODE: 4810 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4811 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4812 mHeldMotionless = MOTIONLESS_TRUE; 4813 // redraw in high-quality, as we're done dragging 4814 invalidate(); 4815 // if the user waits a while w/o moving before the 4816 // up, we don't want to do a fling 4817 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4818 mVelocityTracker.addMovement(ev); 4819 doFling(); 4820 break; 4821 } 4822 mLastVelocity = 0; 4823 WebViewCore.resumePriority(); 4824 break; 4825 case TOUCH_DRAG_START_MODE: 4826 case TOUCH_DONE_MODE: 4827 // do nothing 4828 break; 4829 } 4830 // we also use mVelocityTracker == null to tell us that we are 4831 // not "moving around", so we can take the slower/prettier 4832 // mode in the drawing code 4833 if (mVelocityTracker != null) { 4834 mVelocityTracker.recycle(); 4835 mVelocityTracker = null; 4836 } 4837 break; 4838 } 4839 case MotionEvent.ACTION_CANCEL: { 4840 cancelTouch(); 4841 break; 4842 } 4843 } 4844 return true; 4845 } 4846 4847 private void startTouch(float x, float y, long eventTime) { 4848 // Remember where the motion event started 4849 mLastTouchX = x; 4850 mLastTouchY = y; 4851 mLastTouchTime = eventTime; 4852 mVelocityTracker = VelocityTracker.obtain(); 4853 mSnapScrollMode = SNAP_NONE; 4854 if (mDragTracker != null) { 4855 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 4856 } 4857 } 4858 4859 private void cancelTouch() { 4860 if (mDragTrackerHandler != null) { 4861 mDragTrackerHandler.stopDrag(); 4862 } 4863 // we also use mVelocityTracker == null to tell us that we are 4864 // not "moving around", so we can take the slower/prettier 4865 // mode in the drawing code 4866 if (mVelocityTracker != null) { 4867 mVelocityTracker.recycle(); 4868 mVelocityTracker = null; 4869 } 4870 if (mTouchMode == TOUCH_DRAG_MODE) { 4871 WebViewCore.resumePriority(); 4872 } 4873 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4874 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4875 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4876 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4877 mHeldMotionless = MOTIONLESS_TRUE; 4878 mTouchMode = TOUCH_DONE_MODE; 4879 nativeHideCursor(); 4880 } 4881 4882 private long mTrackballFirstTime = 0; 4883 private long mTrackballLastTime = 0; 4884 private float mTrackballRemainsX = 0.0f; 4885 private float mTrackballRemainsY = 0.0f; 4886 private int mTrackballXMove = 0; 4887 private int mTrackballYMove = 0; 4888 private boolean mExtendSelection = false; 4889 private boolean mTouchSelection = false; 4890 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4891 private static final int TRACKBALL_TIMEOUT = 200; 4892 private static final int TRACKBALL_WAIT = 100; 4893 private static final int TRACKBALL_SCALE = 400; 4894 private static final int TRACKBALL_SCROLL_COUNT = 5; 4895 private static final int TRACKBALL_MOVE_COUNT = 10; 4896 private static final int TRACKBALL_MULTIPLIER = 3; 4897 private static final int SELECT_CURSOR_OFFSET = 16; 4898 private int mSelectX = 0; 4899 private int mSelectY = 0; 4900 private boolean mFocusSizeChanged = false; 4901 private boolean mShiftIsPressed = false; 4902 private boolean mTrackballDown = false; 4903 private long mTrackballUpTime = 0; 4904 private long mLastCursorTime = 0; 4905 private Rect mLastCursorBounds; 4906 4907 // Set by default; BrowserActivity clears to interpret trackball data 4908 // directly for movement. Currently, the framework only passes 4909 // arrow key events, not trackball events, from one child to the next 4910 private boolean mMapTrackballToArrowKeys = true; 4911 4912 public void setMapTrackballToArrowKeys(boolean setMap) { 4913 mMapTrackballToArrowKeys = setMap; 4914 } 4915 4916 void resetTrackballTime() { 4917 mTrackballLastTime = 0; 4918 } 4919 4920 @Override 4921 public boolean onTrackballEvent(MotionEvent ev) { 4922 long time = ev.getEventTime(); 4923 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4924 if (ev.getY() > 0) pageDown(true); 4925 if (ev.getY() < 0) pageUp(true); 4926 return true; 4927 } 4928 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4929 if (mShiftIsPressed) { 4930 return true; // discard press if copy in progress 4931 } 4932 mTrackballDown = true; 4933 if (mNativeClass == 0) { 4934 return false; 4935 } 4936 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4937 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4938 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4939 nativeSelectBestAt(mLastCursorBounds); 4940 } 4941 if (DebugFlags.WEB_VIEW) { 4942 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4943 + " time=" + time 4944 + " mLastCursorTime=" + mLastCursorTime); 4945 } 4946 if (isInTouchMode()) requestFocusFromTouch(); 4947 return false; // let common code in onKeyDown at it 4948 } 4949 if (ev.getAction() == MotionEvent.ACTION_UP) { 4950 // LONG_PRESS_CENTER is set in common onKeyDown 4951 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4952 mTrackballDown = false; 4953 mTrackballUpTime = time; 4954 if (mShiftIsPressed) { 4955 if (mExtendSelection) { 4956 commitCopy(); 4957 } else { 4958 mExtendSelection = true; 4959 invalidate(); // draw the i-beam instead of the arrow 4960 } 4961 return true; // discard press if copy in progress 4962 } 4963 if (DebugFlags.WEB_VIEW) { 4964 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4965 + " time=" + time 4966 ); 4967 } 4968 return false; // let common code in onKeyUp at it 4969 } 4970 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4971 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4972 return false; 4973 } 4974 if (mTrackballDown) { 4975 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4976 return true; // discard move if trackball is down 4977 } 4978 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4979 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4980 return true; 4981 } 4982 // TODO: alternatively we can do panning as touch does 4983 switchOutDrawHistory(); 4984 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4985 if (DebugFlags.WEB_VIEW) { 4986 Log.v(LOGTAG, "onTrackballEvent time=" 4987 + time + " last=" + mTrackballLastTime); 4988 } 4989 mTrackballFirstTime = time; 4990 mTrackballXMove = mTrackballYMove = 0; 4991 } 4992 mTrackballLastTime = time; 4993 if (DebugFlags.WEB_VIEW) { 4994 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4995 } 4996 mTrackballRemainsX += ev.getX(); 4997 mTrackballRemainsY += ev.getY(); 4998 doTrackball(time); 4999 return true; 5000 } 5001 5002 void moveSelection(float xRate, float yRate) { 5003 if (mNativeClass == 0) 5004 return; 5005 int width = getViewWidth(); 5006 int height = getViewHeight(); 5007 mSelectX += xRate; 5008 mSelectY += yRate; 5009 int maxX = width + mScrollX; 5010 int maxY = height + mScrollY; 5011 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5012 , mSelectX)); 5013 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5014 , mSelectY)); 5015 if (DebugFlags.WEB_VIEW) { 5016 Log.v(LOGTAG, "moveSelection" 5017 + " mSelectX=" + mSelectX 5018 + " mSelectY=" + mSelectY 5019 + " mScrollX=" + mScrollX 5020 + " mScrollY=" + mScrollY 5021 + " xRate=" + xRate 5022 + " yRate=" + yRate 5023 ); 5024 } 5025 nativeMoveSelection(viewToContentX(mSelectX), 5026 viewToContentY(mSelectY), mExtendSelection); 5027 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5028 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5029 : 0; 5030 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5031 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5032 : 0; 5033 pinScrollBy(scrollX, scrollY, true, 0); 5034 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5035 requestRectangleOnScreen(select); 5036 invalidate(); 5037 } 5038 5039 private int scaleTrackballX(float xRate, int width) { 5040 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5041 int nextXMove = xMove; 5042 if (xMove > 0) { 5043 if (xMove > mTrackballXMove) { 5044 xMove -= mTrackballXMove; 5045 } 5046 } else if (xMove < mTrackballXMove) { 5047 xMove -= mTrackballXMove; 5048 } 5049 mTrackballXMove = nextXMove; 5050 return xMove; 5051 } 5052 5053 private int scaleTrackballY(float yRate, int height) { 5054 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5055 int nextYMove = yMove; 5056 if (yMove > 0) { 5057 if (yMove > mTrackballYMove) { 5058 yMove -= mTrackballYMove; 5059 } 5060 } else if (yMove < mTrackballYMove) { 5061 yMove -= mTrackballYMove; 5062 } 5063 mTrackballYMove = nextYMove; 5064 return yMove; 5065 } 5066 5067 private int keyCodeToSoundsEffect(int keyCode) { 5068 switch(keyCode) { 5069 case KeyEvent.KEYCODE_DPAD_UP: 5070 return SoundEffectConstants.NAVIGATION_UP; 5071 case KeyEvent.KEYCODE_DPAD_RIGHT: 5072 return SoundEffectConstants.NAVIGATION_RIGHT; 5073 case KeyEvent.KEYCODE_DPAD_DOWN: 5074 return SoundEffectConstants.NAVIGATION_DOWN; 5075 case KeyEvent.KEYCODE_DPAD_LEFT: 5076 return SoundEffectConstants.NAVIGATION_LEFT; 5077 } 5078 throw new IllegalArgumentException("keyCode must be one of " + 5079 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5080 "KEYCODE_DPAD_LEFT}."); 5081 } 5082 5083 private void doTrackball(long time) { 5084 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5085 if (elapsed == 0) { 5086 elapsed = TRACKBALL_TIMEOUT; 5087 } 5088 float xRate = mTrackballRemainsX * 1000 / elapsed; 5089 float yRate = mTrackballRemainsY * 1000 / elapsed; 5090 int viewWidth = getViewWidth(); 5091 int viewHeight = getViewHeight(); 5092 if (mShiftIsPressed) { 5093 moveSelection(scaleTrackballX(xRate, viewWidth), 5094 scaleTrackballY(yRate, viewHeight)); 5095 mTrackballRemainsX = mTrackballRemainsY = 0; 5096 return; 5097 } 5098 float ax = Math.abs(xRate); 5099 float ay = Math.abs(yRate); 5100 float maxA = Math.max(ax, ay); 5101 if (DebugFlags.WEB_VIEW) { 5102 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5103 + " xRate=" + xRate 5104 + " yRate=" + yRate 5105 + " mTrackballRemainsX=" + mTrackballRemainsX 5106 + " mTrackballRemainsY=" + mTrackballRemainsY); 5107 } 5108 int width = mContentWidth - viewWidth; 5109 int height = mContentHeight - viewHeight; 5110 if (width < 0) width = 0; 5111 if (height < 0) height = 0; 5112 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5113 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5114 maxA = Math.max(ax, ay); 5115 int count = Math.max(0, (int) maxA); 5116 int oldScrollX = mScrollX; 5117 int oldScrollY = mScrollY; 5118 if (count > 0) { 5119 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5120 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5121 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5122 KeyEvent.KEYCODE_DPAD_RIGHT; 5123 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5124 if (DebugFlags.WEB_VIEW) { 5125 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5126 + " count=" + count 5127 + " mTrackballRemainsX=" + mTrackballRemainsX 5128 + " mTrackballRemainsY=" + mTrackballRemainsY); 5129 } 5130 if (navHandledKey(selectKeyCode, count, false, time, false)) { 5131 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5132 } 5133 mTrackballRemainsX = mTrackballRemainsY = 0; 5134 } 5135 if (count >= TRACKBALL_SCROLL_COUNT) { 5136 int xMove = scaleTrackballX(xRate, width); 5137 int yMove = scaleTrackballY(yRate, height); 5138 if (DebugFlags.WEB_VIEW) { 5139 Log.v(LOGTAG, "doTrackball pinScrollBy" 5140 + " count=" + count 5141 + " xMove=" + xMove + " yMove=" + yMove 5142 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5143 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5144 ); 5145 } 5146 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5147 xMove = 0; 5148 } 5149 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5150 yMove = 0; 5151 } 5152 if (xMove != 0 || yMove != 0) { 5153 pinScrollBy(xMove, yMove, true, 0); 5154 } 5155 mUserScroll = true; 5156 } 5157 } 5158 5159 private int computeMaxScrollY() { 5160 int maxContentH = computeVerticalScrollRange() + getTitleHeight(); 5161 return Math.max(maxContentH - getViewHeightWithTitle(), getTitleHeight()); 5162 } 5163 5164 public void flingScroll(int vx, int vy) { 5165 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5166 int maxY = computeMaxScrollY(); 5167 5168 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 5169 invalidate(); 5170 } 5171 5172 private void doFling() { 5173 if (mVelocityTracker == null) { 5174 return; 5175 } 5176 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5177 int maxY = computeMaxScrollY(); 5178 5179 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5180 int vx = (int) mVelocityTracker.getXVelocity(); 5181 int vy = (int) mVelocityTracker.getYVelocity(); 5182 5183 if (mSnapScrollMode != SNAP_NONE) { 5184 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5185 vy = 0; 5186 } else { 5187 vx = 0; 5188 } 5189 } 5190 5191 if (true /* EMG release: make our fling more like Maps' */) { 5192 // maps cuts their velocity in half 5193 vx = vx * 3 / 4; 5194 vy = vy * 3 / 4; 5195 } 5196 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5197 WebViewCore.resumePriority(); 5198 return; 5199 } 5200 float currentVelocity = mScroller.getCurrVelocity(); 5201 if (mLastVelocity > 0 && currentVelocity > 0) { 5202 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5203 - Math.atan2(vy, vx))); 5204 final float circle = (float) (Math.PI) * 2.0f; 5205 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5206 vx += currentVelocity * mLastVelX / mLastVelocity; 5207 vy += currentVelocity * mLastVelY / mLastVelocity; 5208 if (DebugFlags.WEB_VIEW) { 5209 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5210 } 5211 } else if (DebugFlags.WEB_VIEW) { 5212 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5213 } 5214 } else if (DebugFlags.WEB_VIEW) { 5215 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5216 + " current=" + currentVelocity 5217 + " vx=" + vx + " vy=" + vy 5218 + " maxX=" + maxX + " maxY=" + maxY 5219 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5220 } 5221 mLastVelX = vx; 5222 mLastVelY = vy; 5223 mLastVelocity = (float) Math.hypot(vx, vy); 5224 5225 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 5226 // TODO: duration is calculated based on velocity, if the range is 5227 // small, the animation will stop before duration is up. We may 5228 // want to calculate how long the animation is going to run to precisely 5229 // resume the webcore update. 5230 final int time = mScroller.getDuration(); 5231 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5232 awakenScrollBars(time); 5233 invalidate(); 5234 } 5235 5236 private boolean zoomWithPreview(float scale) { 5237 float oldScale = mActualScale; 5238 mInitialScrollX = mScrollX; 5239 mInitialScrollY = mScrollY; 5240 5241 // snap to DEFAULT_SCALE if it is close 5242 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 5243 scale = mDefaultScale; 5244 } 5245 5246 setNewZoomScale(scale, true, false); 5247 5248 if (oldScale != mActualScale) { 5249 // use mZoomPickerScale to see zoom preview first 5250 mZoomStart = SystemClock.uptimeMillis(); 5251 mInvInitialZoomScale = 1.0f / oldScale; 5252 mInvFinalZoomScale = 1.0f / mActualScale; 5253 mZoomScale = mActualScale; 5254 WebViewCore.pauseUpdatePicture(mWebViewCore); 5255 invalidate(); 5256 return true; 5257 } else { 5258 return false; 5259 } 5260 } 5261 5262 /** 5263 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5264 * in charge of installing this view to the view hierarchy. This view will 5265 * become visible when the user starts scrolling via touch and fade away if 5266 * the user does not interact with it. 5267 * <p/> 5268 * API version 3 introduces a built-in zoom mechanism that is shown 5269 * automatically by the MapView. This is the preferred approach for 5270 * showing the zoom UI. 5271 * 5272 * @deprecated The built-in zoom mechanism is preferred, see 5273 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5274 */ 5275 @Deprecated 5276 public View getZoomControls() { 5277 if (!getSettings().supportZoom()) { 5278 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5279 return null; 5280 } 5281 if (mZoomControls == null) { 5282 mZoomControls = createZoomControls(); 5283 5284 /* 5285 * need to be set to VISIBLE first so that getMeasuredHeight() in 5286 * {@link #onSizeChanged()} can return the measured value for proper 5287 * layout. 5288 */ 5289 mZoomControls.setVisibility(View.VISIBLE); 5290 mZoomControlRunnable = new Runnable() { 5291 public void run() { 5292 5293 /* Don't dismiss the controls if the user has 5294 * focus on them. Wait and check again later. 5295 */ 5296 if (!mZoomControls.hasFocus()) { 5297 mZoomControls.hide(); 5298 } else { 5299 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5300 mPrivateHandler.postDelayed(mZoomControlRunnable, 5301 ZOOM_CONTROLS_TIMEOUT); 5302 } 5303 } 5304 }; 5305 } 5306 return mZoomControls; 5307 } 5308 5309 private ExtendedZoomControls createZoomControls() { 5310 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 5311 , null); 5312 zoomControls.setOnZoomInClickListener(new OnClickListener() { 5313 public void onClick(View v) { 5314 // reset time out 5315 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5316 mPrivateHandler.postDelayed(mZoomControlRunnable, 5317 ZOOM_CONTROLS_TIMEOUT); 5318 zoomIn(); 5319 } 5320 }); 5321 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 5322 public void onClick(View v) { 5323 // reset time out 5324 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5325 mPrivateHandler.postDelayed(mZoomControlRunnable, 5326 ZOOM_CONTROLS_TIMEOUT); 5327 zoomOut(); 5328 } 5329 }); 5330 return zoomControls; 5331 } 5332 5333 /** 5334 * Gets the {@link ZoomButtonsController} which can be used to add 5335 * additional buttons to the zoom controls window. 5336 * 5337 * @return The instance of {@link ZoomButtonsController} used by this class, 5338 * or null if it is unavailable. 5339 * @hide 5340 */ 5341 public ZoomButtonsController getZoomButtonsController() { 5342 return mZoomButtonsController; 5343 } 5344 5345 /** 5346 * Perform zoom in in the webview 5347 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 5348 */ 5349 public boolean zoomIn() { 5350 // TODO: alternatively we can disallow this during draw history mode 5351 switchOutDrawHistory(); 5352 mInZoomOverview = false; 5353 // Center zooming to the center of the screen. 5354 mZoomCenterX = getViewWidth() * .5f; 5355 mZoomCenterY = getViewHeight() * .5f; 5356 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5357 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5358 return zoomWithPreview(mActualScale * 1.25f); 5359 } 5360 5361 /** 5362 * Perform zoom out in the webview 5363 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 5364 */ 5365 public boolean zoomOut() { 5366 // TODO: alternatively we can disallow this during draw history mode 5367 switchOutDrawHistory(); 5368 // Center zooming to the center of the screen. 5369 mZoomCenterX = getViewWidth() * .5f; 5370 mZoomCenterY = getViewHeight() * .5f; 5371 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5372 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5373 return zoomWithPreview(mActualScale * 0.8f); 5374 } 5375 5376 private void updateSelection() { 5377 if (mNativeClass == 0) { 5378 return; 5379 } 5380 // mLastTouchX and mLastTouchY are the point in the current viewport 5381 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5382 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5383 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 5384 contentX + mNavSlop, contentY + mNavSlop); 5385 nativeSelectBestAt(rect); 5386 } 5387 5388 /** 5389 * Scroll the focused text field/area to match the WebTextView 5390 * @param xPercent New x position of the WebTextView from 0 to 1. 5391 * @param y New y position of the WebTextView in view coordinates 5392 */ 5393 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 5394 if (!inEditingMode() || mWebViewCore == null) { 5395 return; 5396 } 5397 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 5398 // Since this position is relative to the top of the text input 5399 // field, we do not need to take the title bar's height into 5400 // consideration. 5401 viewToContentDimension(y), 5402 new Float(xPercent)); 5403 } 5404 5405 /** 5406 * Set our starting point and time for a drag from the WebTextView. 5407 */ 5408 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 5409 if (!inEditingMode()) { 5410 return; 5411 } 5412 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 5413 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 5414 mLastTouchTime = eventTime; 5415 if (!mScroller.isFinished()) { 5416 abortAnimation(); 5417 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5418 } 5419 mSnapScrollMode = SNAP_NONE; 5420 mVelocityTracker = VelocityTracker.obtain(); 5421 mTouchMode = TOUCH_DRAG_START_MODE; 5422 } 5423 5424 /** 5425 * Given a motion event from the WebTextView, set its location to our 5426 * coordinates, and handle the event. 5427 */ 5428 /*package*/ boolean textFieldDrag(MotionEvent event) { 5429 if (!inEditingMode()) { 5430 return false; 5431 } 5432 mDragFromTextInput = true; 5433 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 5434 (float) (mWebTextView.getTop() - mScrollY)); 5435 boolean result = onTouchEvent(event); 5436 mDragFromTextInput = false; 5437 return result; 5438 } 5439 5440 /** 5441 * Due a touch up from a WebTextView. This will be handled by webkit to 5442 * change the selection. 5443 * @param event MotionEvent in the WebTextView's coordinates. 5444 */ 5445 /*package*/ void touchUpOnTextField(MotionEvent event) { 5446 if (!inEditingMode()) { 5447 return; 5448 } 5449 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 5450 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 5451 nativeMotionUp(x, y, mNavSlop); 5452 } 5453 5454 /** 5455 * Called when pressing the center key or trackball on a textfield. 5456 */ 5457 /*package*/ void centerKeyPressOnTextField() { 5458 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 5459 nativeCursorNodePointer()); 5460 } 5461 5462 private void doShortPress() { 5463 if (mNativeClass == 0) { 5464 return; 5465 } 5466 switchOutDrawHistory(); 5467 // mLastTouchX and mLastTouchY are the point in the current viewport 5468 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5469 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5470 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 5471 WebViewCore.MotionUpData motionUpData = new WebViewCore 5472 .MotionUpData(); 5473 motionUpData.mFrame = nativeCacheHitFramePointer(); 5474 motionUpData.mNode = nativeCacheHitNodePointer(); 5475 motionUpData.mBounds = nativeCacheHitNodeBounds(); 5476 motionUpData.mX = contentX; 5477 motionUpData.mY = contentY; 5478 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 5479 motionUpData); 5480 } else { 5481 doMotionUp(contentX, contentY); 5482 } 5483 } 5484 5485 private void doMotionUp(int contentX, int contentY) { 5486 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 5487 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 5488 } 5489 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 5490 playSoundEffect(SoundEffectConstants.CLICK); 5491 } 5492 } 5493 5494 // Rule for double tap: 5495 // 1. if the current scale is not same as the text wrap scale and layout 5496 // algorithm is NARROW_COLUMNS, fit to column; 5497 // 2. if the current state is not overview mode, change to overview mode; 5498 // 3. if the current state is overview mode, change to default scale. 5499 private void doDoubleTap() { 5500 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 5501 return; 5502 } 5503 mZoomCenterX = mLastTouchX; 5504 mZoomCenterY = mLastTouchY; 5505 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5506 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5507 WebSettings settings = getSettings(); 5508 // remove the zoom control after double tap 5509 if (settings.getBuiltInZoomControls()) { 5510 if (mZoomButtonsController.isVisible()) { 5511 mZoomButtonsController.setVisible(false); 5512 } 5513 } else { 5514 if (mZoomControlRunnable != null) { 5515 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5516 } 5517 if (mZoomControls != null) { 5518 mZoomControls.hide(); 5519 } 5520 } 5521 settings.setDoubleTapToastCount(0); 5522 boolean zoomToDefault = false; 5523 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 5524 && (Math.abs(mActualScale - mTextWrapScale) >= 0.01f)) { 5525 setNewZoomScale(mActualScale, true, true); 5526 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 5527 if (Math.abs(mActualScale - overviewScale) < 0.01f) { 5528 mInZoomOverview = true; 5529 } 5530 } else if (!mInZoomOverview) { 5531 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 5532 if (Math.abs(mActualScale - newScale) >= 0.01f) { 5533 mInZoomOverview = true; 5534 // Force the titlebar fully reveal in overview mode 5535 if (mScrollY < getTitleHeight()) mScrollY = 0; 5536 zoomWithPreview(newScale); 5537 } else if (Math.abs(mActualScale - mDefaultScale) >= 0.01f) { 5538 zoomToDefault = true; 5539 } 5540 } else { 5541 zoomToDefault = true; 5542 } 5543 if (zoomToDefault) { 5544 mInZoomOverview = false; 5545 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 5546 if (left != NO_LEFTEDGE) { 5547 // add a 5pt padding to the left edge. 5548 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 5549 - mScrollX; 5550 // Re-calculate the zoom center so that the new scroll x will be 5551 // on the left edge. 5552 if (viewLeft > 0) { 5553 mZoomCenterX = viewLeft * mDefaultScale 5554 / (mDefaultScale - mActualScale); 5555 } else { 5556 scrollBy(viewLeft, 0); 5557 mZoomCenterX = 0; 5558 } 5559 } 5560 zoomWithPreview(mDefaultScale); 5561 } 5562 } 5563 5564 // Called by JNI to handle a touch on a node representing an email address, 5565 // address, or phone number 5566 private void overrideLoading(String url) { 5567 mCallbackProxy.uiOverrideUrlLoading(url); 5568 } 5569 5570 @Override 5571 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 5572 boolean result = false; 5573 if (inEditingMode()) { 5574 result = mWebTextView.requestFocus(direction, 5575 previouslyFocusedRect); 5576 } else { 5577 result = super.requestFocus(direction, previouslyFocusedRect); 5578 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 5579 // For cases such as GMail, where we gain focus from a direction, 5580 // we want to move to the first available link. 5581 // FIXME: If there are no visible links, we may not want to 5582 int fakeKeyDirection = 0; 5583 switch(direction) { 5584 case View.FOCUS_UP: 5585 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 5586 break; 5587 case View.FOCUS_DOWN: 5588 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 5589 break; 5590 case View.FOCUS_LEFT: 5591 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 5592 break; 5593 case View.FOCUS_RIGHT: 5594 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 5595 break; 5596 default: 5597 return result; 5598 } 5599 if (mNativeClass != 0 && !nativeHasCursorNode()) { 5600 navHandledKey(fakeKeyDirection, 1, true, 0, true); 5601 } 5602 } 5603 } 5604 return result; 5605 } 5606 5607 @Override 5608 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5609 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 5610 5611 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5612 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5613 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5614 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5615 5616 int measuredHeight = heightSize; 5617 int measuredWidth = widthSize; 5618 5619 // Grab the content size from WebViewCore. 5620 int contentHeight = contentToViewDimension(mContentHeight); 5621 int contentWidth = contentToViewDimension(mContentWidth); 5622 5623// Log.d(LOGTAG, "------- measure " + heightMode); 5624 5625 if (heightMode != MeasureSpec.EXACTLY) { 5626 mHeightCanMeasure = true; 5627 measuredHeight = contentHeight; 5628 if (heightMode == MeasureSpec.AT_MOST) { 5629 // If we are larger than the AT_MOST height, then our height can 5630 // no longer be measured and we should scroll internally. 5631 if (measuredHeight > heightSize) { 5632 measuredHeight = heightSize; 5633 mHeightCanMeasure = false; 5634 } 5635 } 5636 } else { 5637 mHeightCanMeasure = false; 5638 } 5639 if (mNativeClass != 0) { 5640 nativeSetHeightCanMeasure(mHeightCanMeasure); 5641 } 5642 // For the width, always use the given size unless unspecified. 5643 if (widthMode == MeasureSpec.UNSPECIFIED) { 5644 mWidthCanMeasure = true; 5645 measuredWidth = contentWidth; 5646 } else { 5647 mWidthCanMeasure = false; 5648 } 5649 5650 synchronized (this) { 5651 setMeasuredDimension(measuredWidth, measuredHeight); 5652 } 5653 } 5654 5655 @Override 5656 public boolean requestChildRectangleOnScreen(View child, 5657 Rect rect, 5658 boolean immediate) { 5659 rect.offset(child.getLeft() - child.getScrollX(), 5660 child.getTop() - child.getScrollY()); 5661 5662 int height = getViewHeightWithTitle(); 5663 int screenTop = mScrollY; 5664 int screenBottom = screenTop + height; 5665 5666 int scrollYDelta = 0; 5667 5668 if (rect.bottom > screenBottom) { 5669 int oneThirdOfScreenHeight = height / 3; 5670 if (rect.height() > 2 * oneThirdOfScreenHeight) { 5671 // If the rectangle is too tall to fit in the bottom two thirds 5672 // of the screen, place it at the top. 5673 scrollYDelta = rect.top - screenTop; 5674 } else { 5675 // If the rectangle will still fit on screen, we want its 5676 // top to be in the top third of the screen. 5677 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 5678 } 5679 } else if (rect.top < screenTop) { 5680 scrollYDelta = rect.top - screenTop; 5681 } 5682 5683 int width = getWidth() - getVerticalScrollbarWidth(); 5684 int screenLeft = mScrollX; 5685 int screenRight = screenLeft + width; 5686 5687 int scrollXDelta = 0; 5688 5689 if (rect.right > screenRight && rect.left > screenLeft) { 5690 if (rect.width() > width) { 5691 scrollXDelta += (rect.left - screenLeft); 5692 } else { 5693 scrollXDelta += (rect.right - screenRight); 5694 } 5695 } else if (rect.left < screenLeft) { 5696 scrollXDelta -= (screenLeft - rect.left); 5697 } 5698 5699 if ((scrollYDelta | scrollXDelta) != 0) { 5700 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 5701 } 5702 5703 return false; 5704 } 5705 5706 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 5707 String replace, int newStart, int newEnd) { 5708 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 5709 arg.mReplace = replace; 5710 arg.mNewStart = newStart; 5711 arg.mNewEnd = newEnd; 5712 mTextGeneration++; 5713 arg.mTextGeneration = mTextGeneration; 5714 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 5715 } 5716 5717 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 5718 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 5719 arg.mEvent = event; 5720 arg.mCurrentText = currentText; 5721 // Increase our text generation number, and pass it to webcore thread 5722 mTextGeneration++; 5723 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 5724 // WebKit's document state is not saved until about to leave the page. 5725 // To make sure the host application, like Browser, has the up to date 5726 // document state when it goes to background, we force to save the 5727 // document state. 5728 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 5729 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 5730 cursorData(), 1000); 5731 } 5732 5733 /* package */ WebViewCore getWebViewCore() { 5734 return mWebViewCore; 5735 } 5736 5737 //------------------------------------------------------------------------- 5738 // Methods can be called from a separate thread, like WebViewCore 5739 // If it needs to call the View system, it has to send message. 5740 //------------------------------------------------------------------------- 5741 5742 /** 5743 * General handler to receive message coming from webkit thread 5744 */ 5745 class PrivateHandler extends Handler { 5746 @Override 5747 public void handleMessage(Message msg) { 5748 // exclude INVAL_RECT_MSG_ID since it is frequently output 5749 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 5750 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 5751 > FIND_AGAIN ? Integer.toString(msg.what) 5752 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 5753 } 5754 if (mWebViewCore == null) { 5755 // after WebView's destroy() is called, skip handling messages. 5756 return; 5757 } 5758 switch (msg.what) { 5759 case REMEMBER_PASSWORD: { 5760 mDatabase.setUsernamePassword( 5761 msg.getData().getString("host"), 5762 msg.getData().getString("username"), 5763 msg.getData().getString("password")); 5764 ((Message) msg.obj).sendToTarget(); 5765 break; 5766 } 5767 case NEVER_REMEMBER_PASSWORD: { 5768 mDatabase.setUsernamePassword( 5769 msg.getData().getString("host"), null, null); 5770 ((Message) msg.obj).sendToTarget(); 5771 break; 5772 } 5773 case SWITCH_TO_SHORTPRESS: { 5774 // if mPreventDrag is not confirmed, cancel it so that it 5775 // won't block panning the page. 5776 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5777 mPreventDrag = PREVENT_DRAG_CANCEL; 5778 mPreventLongPress = false; 5779 mPreventDoubleTap = false; 5780 // remove the pending TOUCH_EVENT and send a cancel 5781 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5782 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 5783 ted.mAction = MotionEvent.ACTION_CANCEL; 5784 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5785 } 5786 if (mTouchMode == TOUCH_INIT_MODE) { 5787 mTouchMode = mFullScreenHolder == null 5788 ? TOUCH_SHORTPRESS_START_MODE 5789 : TOUCH_SHORTPRESS_MODE; 5790 updateSelection(); 5791 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5792 mTouchMode = TOUCH_DONE_MODE; 5793 } 5794 break; 5795 } 5796 case SWITCH_TO_LONGPRESS: { 5797 if (mPreventLongPress) { 5798 mTouchMode = TOUCH_DONE_MODE; 5799 WebViewCore.TouchEventData ted 5800 = new WebViewCore.TouchEventData(); 5801 ted.mAction = WebViewCore.ACTION_LONGPRESS; 5802 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 5803 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 5804 ted.mEventTime = SystemClock.uptimeMillis(); 5805 // metaState for long press is tricky. Should it be the state 5806 // when the press started or when the press was released? Or 5807 // some intermediary key state? For simplicity for now, we 5808 // don't set it. 5809 ted.mMetaState = 0; 5810 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5811 } else if (mPreventDrag != PREVENT_DRAG_YES) { 5812 mTouchMode = TOUCH_DONE_MODE; 5813 if (mFullScreenHolder == null) { 5814 performLongClick(); 5815 rebuildWebTextView(); 5816 } 5817 } 5818 break; 5819 } 5820 case RELEASE_SINGLE_TAP: { 5821 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5822 // if mPreventDrag is not confirmed, cancel it so that 5823 // it won't block panning the page. 5824 mPreventDrag = PREVENT_DRAG_CANCEL; 5825 mPreventLongPress = false; 5826 mPreventDoubleTap = false; 5827 // remove the pending TOUCH_EVENT and send a cancel 5828 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5829 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 5830 ted.mAction = MotionEvent.ACTION_CANCEL; 5831 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5832 } 5833 if (mPreventDrag != PREVENT_DRAG_YES) { 5834 mTouchMode = TOUCH_DONE_MODE; 5835 doShortPress(); 5836 } 5837 break; 5838 } 5839 case SCROLL_BY_MSG_ID: 5840 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 5841 break; 5842 case SYNC_SCROLL_TO_MSG_ID: 5843 if (mUserScroll) { 5844 // if user has scrolled explicitly, don't sync the 5845 // scroll position any more 5846 mUserScroll = false; 5847 break; 5848 } 5849 // fall through 5850 case SCROLL_TO_MSG_ID: 5851 if (setContentScrollTo(msg.arg1, msg.arg2)) { 5852 // if we can't scroll to the exact position due to pin, 5853 // send a message to WebCore to re-scroll when we get a 5854 // new picture 5855 mUserScroll = false; 5856 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 5857 msg.arg1, msg.arg2); 5858 } 5859 break; 5860 case SPAWN_SCROLL_TO_MSG_ID: 5861 spawnContentScrollTo(msg.arg1, msg.arg2); 5862 break; 5863 case UPDATE_ZOOM_RANGE: { 5864 WebViewCore.RestoreState restoreState 5865 = (WebViewCore.RestoreState) msg.obj; 5866 // mScrollX contains the new minPrefWidth 5867 updateZoomRange(restoreState, getViewWidth(), 5868 restoreState.mScrollX, false); 5869 break; 5870 } 5871 case NEW_PICTURE_MSG_ID: { 5872 WebSettings settings = mWebViewCore.getSettings(); 5873 // called for new content 5874 final int viewWidth = getViewWidth(); 5875 final WebViewCore.DrawData draw = 5876 (WebViewCore.DrawData) msg.obj; 5877 final Point viewSize = draw.mViewPoint; 5878 boolean useWideViewport = settings.getUseWideViewPort(); 5879 WebViewCore.RestoreState restoreState = draw.mRestoreState; 5880 boolean hasRestoreState = restoreState != null; 5881 if (hasRestoreState) { 5882 mInZoomOverview = false; 5883 updateZoomRange(restoreState, viewSize.x, 5884 draw.mMinPrefWidth, true); 5885 if (mInitialScaleInPercent > 0) { 5886 setNewZoomScale(mInitialScaleInPercent / 100.0f, 5887 mInitialScaleInPercent != mTextWrapScale * 100, 5888 false); 5889 } else if (restoreState.mViewScale > 0) { 5890 mTextWrapScale = restoreState.mTextWrapScale; 5891 setNewZoomScale(restoreState.mViewScale, false, 5892 false); 5893 } else { 5894 mInZoomOverview = useWideViewport 5895 && settings.getLoadWithOverviewMode(); 5896 float scale; 5897 if (mInZoomOverview) { 5898 scale = (float) viewWidth 5899 / DEFAULT_VIEWPORT_WIDTH; 5900 } else { 5901 scale = restoreState.mTextWrapScale; 5902 } 5903 setNewZoomScale(scale, Math.abs(scale 5904 - mTextWrapScale) >= 0.01f, false); 5905 } 5906 setContentScrollTo(restoreState.mScrollX, 5907 restoreState.mScrollY); 5908 // As we are on a new page, remove the WebTextView. This 5909 // is necessary for page loads driven by webkit, and in 5910 // particular when the user was on a password field, so 5911 // the WebTextView was visible. 5912 clearTextEntry(false); 5913 // update the zoom buttons as the scale can be changed 5914 if (getSettings().getBuiltInZoomControls()) { 5915 updateZoomButtonsEnabled(); 5916 } 5917 } 5918 // We update the layout (i.e. request a layout from the 5919 // view system) if the last view size that we sent to 5920 // WebCore matches the view size of the picture we just 5921 // received in the fixed dimension. 5922 final boolean updateLayout = viewSize.x == mLastWidthSent 5923 && viewSize.y == mLastHeightSent; 5924 recordNewContentSize(draw.mWidthHeight.x, 5925 draw.mWidthHeight.y 5926 + (mFindIsUp ? mFindHeight : 0), updateLayout); 5927 if (DebugFlags.WEB_VIEW) { 5928 Rect b = draw.mInvalRegion.getBounds(); 5929 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 5930 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 5931 } 5932 invalidateContentRect(draw.mInvalRegion.getBounds()); 5933 if (mPictureListener != null) { 5934 mPictureListener.onNewPicture(WebView.this, capturePicture()); 5935 } 5936 if (useWideViewport) { 5937 // limit mZoomOverviewWidth upper bound to 5938 // sMaxViewportWidth so that if the page doesn't behave 5939 // well, the WebView won't go insane. limit the lower 5940 // bound to match the default scale for mobile sites. 5941 mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math 5942 .max((int) (viewWidth / mDefaultScale), Math 5943 .max(draw.mMinPrefWidth, 5944 draw.mViewPoint.x))); 5945 } 5946 if (!mMinZoomScaleFixed) { 5947 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 5948 } 5949 if (!mDrawHistory && mInZoomOverview) { 5950 // fit the content width to the current view. Ignore 5951 // the rounding error case. 5952 if (Math.abs((viewWidth * mInvActualScale) 5953 - mZoomOverviewWidth) > 1) { 5954 setNewZoomScale((float) viewWidth 5955 / mZoomOverviewWidth, Math.abs(mActualScale 5956 - mTextWrapScale) < 0.01f, false); 5957 } 5958 } 5959 if (draw.mFocusSizeChanged && inEditingMode()) { 5960 mFocusSizeChanged = true; 5961 } 5962 if (hasRestoreState) { 5963 mViewManager.postReadyToDrawAll(); 5964 } 5965 break; 5966 } 5967 case WEBCORE_INITIALIZED_MSG_ID: 5968 // nativeCreate sets mNativeClass to a non-zero value 5969 nativeCreate(msg.arg1); 5970 break; 5971 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 5972 // Make sure that the textfield is currently focused 5973 // and representing the same node as the pointer. 5974 if (inEditingMode() && 5975 mWebTextView.isSameTextField(msg.arg1)) { 5976 if (msg.getData().getBoolean("password")) { 5977 Spannable text = (Spannable) mWebTextView.getText(); 5978 int start = Selection.getSelectionStart(text); 5979 int end = Selection.getSelectionEnd(text); 5980 mWebTextView.setInPassword(true); 5981 // Restore the selection, which may have been 5982 // ruined by setInPassword. 5983 Spannable pword = 5984 (Spannable) mWebTextView.getText(); 5985 Selection.setSelection(pword, start, end); 5986 // If the text entry has created more events, ignore 5987 // this one. 5988 } else if (msg.arg2 == mTextGeneration) { 5989 mWebTextView.setTextAndKeepSelection( 5990 (String) msg.obj); 5991 } 5992 } 5993 break; 5994 case UPDATE_TEXT_SELECTION_MSG_ID: 5995 // If no textfield was in focus, and the user touched one, 5996 // causing it to send this message, then WebTextView has not 5997 // been set up yet. Rebuild it so it can set its selection. 5998 rebuildWebTextView(); 5999 if (inEditingMode() 6000 && mWebTextView.isSameTextField(msg.arg1) 6001 && msg.arg2 == mTextGeneration) { 6002 WebViewCore.TextSelectionData tData 6003 = (WebViewCore.TextSelectionData) msg.obj; 6004 mWebTextView.setSelectionFromWebKit(tData.mStart, 6005 tData.mEnd); 6006 } 6007 break; 6008 case RETURN_LABEL: 6009 if (inEditingMode() 6010 && mWebTextView.isSameTextField(msg.arg1)) { 6011 mWebTextView.setHint((String) msg.obj); 6012 InputMethodManager imm 6013 = InputMethodManager.peekInstance(); 6014 // The hint is propagated to the IME in 6015 // onCreateInputConnection. If the IME is already 6016 // active, restart it so that its hint text is updated. 6017 if (imm != null && imm.isActive(mWebTextView)) { 6018 imm.restartInput(mWebTextView); 6019 } 6020 } 6021 break; 6022 case MOVE_OUT_OF_PLUGIN: 6023 navHandledKey(msg.arg1, 1, false, 0, true); 6024 break; 6025 case UPDATE_TEXT_ENTRY_MSG_ID: 6026 // this is sent after finishing resize in WebViewCore. Make 6027 // sure the text edit box is still on the screen. 6028 if (inEditingMode() && nativeCursorIsTextInput()) { 6029 mWebTextView.bringIntoView(); 6030 rebuildWebTextView(); 6031 } 6032 break; 6033 case CLEAR_TEXT_ENTRY: 6034 clearTextEntry(false); 6035 break; 6036 case INVAL_RECT_MSG_ID: { 6037 Rect r = (Rect)msg.obj; 6038 if (r == null) { 6039 invalidate(); 6040 } else { 6041 // we need to scale r from content into view coords, 6042 // which viewInvalidate() does for us 6043 viewInvalidate(r.left, r.top, r.right, r.bottom); 6044 } 6045 break; 6046 } 6047 case IMMEDIATE_REPAINT_MSG_ID: { 6048 invalidate(); 6049 break; 6050 } 6051 case SET_ROOT_LAYER_MSG_ID: { 6052 nativeSetRootLayer(msg.arg1); 6053 invalidate(); 6054 break; 6055 } 6056 case REQUEST_FORM_DATA: 6057 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6058 if (mWebTextView.isSameTextField(msg.arg1)) { 6059 mWebTextView.setAdapterCustom(adapter); 6060 } 6061 break; 6062 case RESUME_WEBCORE_PRIORITY: 6063 WebViewCore.resumePriority(); 6064 break; 6065 6066 case LONG_PRESS_CENTER: 6067 // as this is shared by keydown and trackballdown, reset all 6068 // the states 6069 mGotCenterDown = false; 6070 mTrackballDown = false; 6071 performLongClick(); 6072 break; 6073 6074 case WEBCORE_NEED_TOUCH_EVENTS: 6075 mForwardTouchEvents = (msg.arg1 != 0); 6076 break; 6077 6078 case PREVENT_TOUCH_ID: 6079 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 6080 // dont override if mPreventDrag has been set to no due 6081 // to time out 6082 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 6083 mPreventDrag = (msg.arg2 & TOUCH_PREVENT_DRAG) 6084 == TOUCH_PREVENT_DRAG ? PREVENT_DRAG_YES 6085 : PREVENT_DRAG_NO; 6086 if (mPreventDrag == PREVENT_DRAG_YES) { 6087 mTouchMode = TOUCH_DONE_MODE; 6088 } else { 6089 mPreventLongPress = 6090 (msg.arg2 & TOUCH_PREVENT_LONGPRESS) 6091 == TOUCH_PREVENT_LONGPRESS; 6092 mPreventDoubleTap = 6093 (msg.arg2 & TOUCH_PREVENT_DOUBLETAP) 6094 == TOUCH_PREVENT_DOUBLETAP; 6095 } 6096 } 6097 } 6098 break; 6099 6100 case REQUEST_KEYBOARD: 6101 if (msg.arg1 == 0) { 6102 hideSoftKeyboard(); 6103 } else { 6104 displaySoftKeyboard(1 == msg.arg2); 6105 } 6106 break; 6107 6108 case FIND_AGAIN: 6109 // Ignore if find has been dismissed. 6110 if (mFindIsUp) { 6111 findAll(mLastFind); 6112 } 6113 break; 6114 6115 case DRAG_HELD_MOTIONLESS: 6116 mHeldMotionless = MOTIONLESS_TRUE; 6117 invalidate(); 6118 // fall through to keep scrollbars awake 6119 6120 case AWAKEN_SCROLL_BARS: 6121 if (mTouchMode == TOUCH_DRAG_MODE 6122 && mHeldMotionless == MOTIONLESS_TRUE) { 6123 awakenScrollBars(ViewConfiguration 6124 .getScrollDefaultDelay(), false); 6125 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6126 .obtainMessage(AWAKEN_SCROLL_BARS), 6127 ViewConfiguration.getScrollDefaultDelay()); 6128 } 6129 break; 6130 6131 case DO_MOTION_UP: 6132 doMotionUp(msg.arg1, msg.arg2); 6133 break; 6134 6135 case SHOW_FULLSCREEN: { 6136 WebViewCore.PluginFullScreenData data 6137 = (WebViewCore.PluginFullScreenData) msg.obj; 6138 if (data.mNpp != 0 && data.mView != null) { 6139 if (mFullScreenHolder != null) { 6140 Log.w(LOGTAG, 6141 "Should not have another full screen."); 6142 mFullScreenHolder.dismiss(); 6143 } 6144 mFullScreenHolder = new PluginFullScreenHolder( 6145 WebView.this, data.mNpp); 6146 // as we are sharing the View between full screen and 6147 // embedded mode, we have to remove the 6148 // AbsoluteLayout.LayoutParams set by embedded mode to 6149 // ViewGroup.LayoutParams before adding it to the dialog 6150 data.mView.setLayoutParams(new ViewGroup.LayoutParams( 6151 ViewGroup.LayoutParams.FILL_PARENT, 6152 ViewGroup.LayoutParams.FILL_PARENT)); 6153 mFullScreenHolder.setContentView(data.mView); 6154 mFullScreenHolder.setCancelable(false); 6155 mFullScreenHolder.setCanceledOnTouchOutside(false); 6156 mFullScreenHolder.show(); 6157 } else if (mFullScreenHolder == null) { 6158 // this may happen if user dismisses the fullscreen and 6159 // then the WebCore re-position message finally reached 6160 // the UI thread. 6161 break; 6162 } 6163 // move the matching embedded view fully into the view so 6164 // that touch will be valid instead of rejected due to out 6165 // of the visible bounds 6166 // TODO: do we need to preserve the original position and 6167 // scale so that we can revert it when leaving the full 6168 // screen mode? 6169 int x = contentToViewX(data.mDocX); 6170 int y = contentToViewY(data.mDocY); 6171 int width = contentToViewDimension(data.mDocWidth); 6172 int height = contentToViewDimension(data.mDocHeight); 6173 int viewWidth = getViewWidth(); 6174 int viewHeight = getViewHeight(); 6175 int newX = mScrollX; 6176 int newY = mScrollY; 6177 if (x < mScrollX) { 6178 newX = x + (width > viewWidth 6179 ? (width - viewWidth) / 2 : 0); 6180 } else if (x + width > mScrollX + viewWidth) { 6181 newX = x + width - viewWidth - (width > viewWidth 6182 ? (width - viewWidth) / 2 : 0); 6183 } 6184 if (y < mScrollY) { 6185 newY = y + (height > viewHeight 6186 ? (height - viewHeight) / 2 : 0); 6187 } else if (y + height > mScrollY + viewHeight) { 6188 newY = y + height - viewHeight - (height > viewHeight 6189 ? (height - viewHeight) / 2 : 0); 6190 } 6191 scrollTo(newX, newY); 6192 if (width > viewWidth || height > viewHeight) { 6193 mZoomCenterX = viewWidth * .5f; 6194 mZoomCenterY = viewHeight * .5f; 6195 // do not change text wrap scale so that there is no 6196 // reflow 6197 setNewZoomScale(mActualScale 6198 / Math.max((float) width / viewWidth, 6199 (float) height / viewHeight), false, 6200 false); 6201 } 6202 // Now update the bound 6203 mFullScreenHolder.updateBound(contentToViewX(data.mDocX) 6204 - mScrollX, contentToViewY(data.mDocY) - mScrollY, 6205 contentToViewDimension(data.mDocWidth), 6206 contentToViewDimension(data.mDocHeight)); 6207 } 6208 break; 6209 6210 case HIDE_FULLSCREEN: 6211 if (mFullScreenHolder != null) { 6212 mFullScreenHolder.dismiss(); 6213 mFullScreenHolder = null; 6214 } 6215 break; 6216 6217 case DOM_FOCUS_CHANGED: 6218 if (inEditingMode()) { 6219 nativeClearCursor(); 6220 rebuildWebTextView(); 6221 } 6222 break; 6223 6224 case SHOW_RECT_MSG_ID: { 6225 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6226 int x = mScrollX; 6227 int left = contentToViewX(data.mLeft); 6228 int width = contentToViewDimension(data.mWidth); 6229 int maxWidth = contentToViewDimension(data.mContentWidth); 6230 int viewWidth = getViewWidth(); 6231 if (width < viewWidth) { 6232 // center align 6233 x += left + width / 2 - mScrollX - viewWidth / 2; 6234 } else { 6235 x += (int) (left + data.mXPercentInDoc * width 6236 - mScrollX - data.mXPercentInView * viewWidth); 6237 } 6238 if (DebugFlags.WEB_VIEW) { 6239 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6240 width + ",maxWidth=" + maxWidth + 6241 ",viewWidth=" + viewWidth + ",x=" 6242 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6243 ",xPercentInView=" + data.mXPercentInView+ ")"); 6244 } 6245 // use the passing content width to cap x as the current 6246 // mContentWidth may not be updated yet 6247 x = Math.max(0, 6248 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6249 int top = contentToViewY(data.mTop); 6250 int height = contentToViewDimension(data.mHeight); 6251 int maxHeight = contentToViewDimension(data.mContentHeight); 6252 int viewHeight = getViewHeight(); 6253 int y = (int) (top + data.mYPercentInDoc * height - 6254 data.mYPercentInView * viewHeight); 6255 if (DebugFlags.WEB_VIEW) { 6256 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6257 height + ",maxHeight=" + maxHeight + 6258 ",viewHeight=" + viewHeight + ",y=" 6259 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6260 ",yPercentInView=" + data.mYPercentInView+ ")"); 6261 } 6262 // use the passing content height to cap y as the current 6263 // mContentHeight may not be updated yet 6264 y = Math.max(0, 6265 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6266 // We need to take into account the visible title height 6267 // when scrolling since y is an absolute view position. 6268 y = Math.max(0, y - getVisibleTitleHeight()); 6269 scrollTo(x, y); 6270 } 6271 break; 6272 6273 default: 6274 super.handleMessage(msg); 6275 break; 6276 } 6277 } 6278 } 6279 6280 // Class used to use a dropdown for a <select> element 6281 private class InvokeListBox implements Runnable { 6282 // Whether the listbox allows multiple selection. 6283 private boolean mMultiple; 6284 // Passed in to a list with multiple selection to tell 6285 // which items are selected. 6286 private int[] mSelectedArray; 6287 // Passed in to a list with single selection to tell 6288 // where the initial selection is. 6289 private int mSelection; 6290 6291 private Container[] mContainers; 6292 6293 // Need these to provide stable ids to my ArrayAdapter, 6294 // which normally does not have stable ids. (Bug 1250098) 6295 private class Container extends Object { 6296 /** 6297 * Possible values for mEnabled. Keep in sync with OptionStatus in 6298 * WebViewCore.cpp 6299 */ 6300 final static int OPTGROUP = -1; 6301 final static int OPTION_DISABLED = 0; 6302 final static int OPTION_ENABLED = 1; 6303 6304 String mString; 6305 int mEnabled; 6306 int mId; 6307 6308 public String toString() { 6309 return mString; 6310 } 6311 } 6312 6313 /** 6314 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6315 * and allow filtering. 6316 */ 6317 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6318 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6319 super(context, 6320 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6321 com.android.internal.R.layout.select_dialog_singlechoice, 6322 objects); 6323 } 6324 6325 @Override 6326 public View getView(int position, View convertView, 6327 ViewGroup parent) { 6328 // Always pass in null so that we will get a new CheckedTextView 6329 // Otherwise, an item which was previously used as an <optgroup> 6330 // element (i.e. has no check), could get used as an <option> 6331 // element, which needs a checkbox/radio, but it would not have 6332 // one. 6333 convertView = super.getView(position, null, parent); 6334 Container c = item(position); 6335 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6336 // ListView does not draw dividers between disabled and 6337 // enabled elements. Use a LinearLayout to provide dividers 6338 LinearLayout layout = new LinearLayout(mContext); 6339 layout.setOrientation(LinearLayout.VERTICAL); 6340 if (position > 0) { 6341 View dividerTop = new View(mContext); 6342 dividerTop.setBackgroundResource( 6343 android.R.drawable.divider_horizontal_bright); 6344 layout.addView(dividerTop); 6345 } 6346 6347 if (Container.OPTGROUP == c.mEnabled) { 6348 // Currently select_dialog_multichoice and 6349 // select_dialog_singlechoice are CheckedTextViews. If 6350 // that changes, the class cast will no longer be valid. 6351 Assert.assertTrue( 6352 convertView instanceof CheckedTextView); 6353 ((CheckedTextView) convertView).setCheckMarkDrawable( 6354 null); 6355 } else { 6356 // c.mEnabled == Container.OPTION_DISABLED 6357 // Draw the disabled element in a disabled state. 6358 convertView.setEnabled(false); 6359 } 6360 6361 layout.addView(convertView); 6362 if (position < getCount() - 1) { 6363 View dividerBottom = new View(mContext); 6364 dividerBottom.setBackgroundResource( 6365 android.R.drawable.divider_horizontal_bright); 6366 layout.addView(dividerBottom); 6367 } 6368 return layout; 6369 } 6370 return convertView; 6371 } 6372 6373 @Override 6374 public boolean hasStableIds() { 6375 // AdapterView's onChanged method uses this to determine whether 6376 // to restore the old state. Return false so that the old (out 6377 // of date) state does not replace the new, valid state. 6378 return false; 6379 } 6380 6381 private Container item(int position) { 6382 if (position < 0 || position >= getCount()) { 6383 return null; 6384 } 6385 return (Container) getItem(position); 6386 } 6387 6388 @Override 6389 public long getItemId(int position) { 6390 Container item = item(position); 6391 if (item == null) { 6392 return -1; 6393 } 6394 return item.mId; 6395 } 6396 6397 @Override 6398 public boolean areAllItemsEnabled() { 6399 return false; 6400 } 6401 6402 @Override 6403 public boolean isEnabled(int position) { 6404 Container item = item(position); 6405 if (item == null) { 6406 return false; 6407 } 6408 return Container.OPTION_ENABLED == item.mEnabled; 6409 } 6410 } 6411 6412 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 6413 mMultiple = true; 6414 mSelectedArray = selected; 6415 6416 int length = array.length; 6417 mContainers = new Container[length]; 6418 for (int i = 0; i < length; i++) { 6419 mContainers[i] = new Container(); 6420 mContainers[i].mString = array[i]; 6421 mContainers[i].mEnabled = enabled[i]; 6422 mContainers[i].mId = i; 6423 } 6424 } 6425 6426 private InvokeListBox(String[] array, int[] enabled, int selection) { 6427 mSelection = selection; 6428 mMultiple = false; 6429 6430 int length = array.length; 6431 mContainers = new Container[length]; 6432 for (int i = 0; i < length; i++) { 6433 mContainers[i] = new Container(); 6434 mContainers[i].mString = array[i]; 6435 mContainers[i].mEnabled = enabled[i]; 6436 mContainers[i].mId = i; 6437 } 6438 } 6439 6440 /* 6441 * Whenever the data set changes due to filtering, this class ensures 6442 * that the checked item remains checked. 6443 */ 6444 private class SingleDataSetObserver extends DataSetObserver { 6445 private long mCheckedId; 6446 private ListView mListView; 6447 private Adapter mAdapter; 6448 6449 /* 6450 * Create a new observer. 6451 * @param id The ID of the item to keep checked. 6452 * @param l ListView for getting and clearing the checked states 6453 * @param a Adapter for getting the IDs 6454 */ 6455 public SingleDataSetObserver(long id, ListView l, Adapter a) { 6456 mCheckedId = id; 6457 mListView = l; 6458 mAdapter = a; 6459 } 6460 6461 public void onChanged() { 6462 // The filter may have changed which item is checked. Find the 6463 // item that the ListView thinks is checked. 6464 int position = mListView.getCheckedItemPosition(); 6465 long id = mAdapter.getItemId(position); 6466 if (mCheckedId != id) { 6467 // Clear the ListView's idea of the checked item, since 6468 // it is incorrect 6469 mListView.clearChoices(); 6470 // Search for mCheckedId. If it is in the filtered list, 6471 // mark it as checked 6472 int count = mAdapter.getCount(); 6473 for (int i = 0; i < count; i++) { 6474 if (mAdapter.getItemId(i) == mCheckedId) { 6475 mListView.setItemChecked(i, true); 6476 break; 6477 } 6478 } 6479 } 6480 } 6481 6482 public void onInvalidate() {} 6483 } 6484 6485 public void run() { 6486 final ListView listView = (ListView) LayoutInflater.from(mContext) 6487 .inflate(com.android.internal.R.layout.select_dialog, null); 6488 final MyArrayListAdapter adapter = new 6489 MyArrayListAdapter(mContext, mContainers, mMultiple); 6490 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 6491 .setView(listView).setCancelable(true) 6492 .setInverseBackgroundForced(true); 6493 6494 if (mMultiple) { 6495 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 6496 public void onClick(DialogInterface dialog, int which) { 6497 mWebViewCore.sendMessage( 6498 EventHub.LISTBOX_CHOICES, 6499 adapter.getCount(), 0, 6500 listView.getCheckedItemPositions()); 6501 }}); 6502 b.setNegativeButton(android.R.string.cancel, 6503 new DialogInterface.OnClickListener() { 6504 public void onClick(DialogInterface dialog, int which) { 6505 mWebViewCore.sendMessage( 6506 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6507 }}); 6508 } 6509 final AlertDialog dialog = b.create(); 6510 listView.setAdapter(adapter); 6511 listView.setFocusableInTouchMode(true); 6512 // There is a bug (1250103) where the checks in a ListView with 6513 // multiple items selected are associated with the positions, not 6514 // the ids, so the items do not properly retain their checks when 6515 // filtered. Do not allow filtering on multiple lists until 6516 // that bug is fixed. 6517 6518 listView.setTextFilterEnabled(!mMultiple); 6519 if (mMultiple) { 6520 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 6521 int length = mSelectedArray.length; 6522 for (int i = 0; i < length; i++) { 6523 listView.setItemChecked(mSelectedArray[i], true); 6524 } 6525 } else { 6526 listView.setOnItemClickListener(new OnItemClickListener() { 6527 public void onItemClick(AdapterView parent, View v, 6528 int position, long id) { 6529 mWebViewCore.sendMessage( 6530 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 6531 dialog.dismiss(); 6532 } 6533 }); 6534 if (mSelection != -1) { 6535 listView.setSelection(mSelection); 6536 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 6537 listView.setItemChecked(mSelection, true); 6538 DataSetObserver observer = new SingleDataSetObserver( 6539 adapter.getItemId(mSelection), listView, adapter); 6540 adapter.registerDataSetObserver(observer); 6541 } 6542 } 6543 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 6544 public void onCancel(DialogInterface dialog) { 6545 mWebViewCore.sendMessage( 6546 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6547 } 6548 }); 6549 dialog.show(); 6550 } 6551 } 6552 6553 /* 6554 * Request a dropdown menu for a listbox with multiple selection. 6555 * 6556 * @param array Labels for the listbox. 6557 * @param enabledArray State for each element in the list. See static 6558 * integers in Container class. 6559 * @param selectedArray Which positions are initally selected. 6560 */ 6561 void requestListBox(String[] array, int[] enabledArray, int[] 6562 selectedArray) { 6563 mPrivateHandler.post( 6564 new InvokeListBox(array, enabledArray, selectedArray)); 6565 } 6566 6567 private void updateZoomRange(WebViewCore.RestoreState restoreState, 6568 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 6569 if (restoreState.mMinScale == 0) { 6570 if (restoreState.mMobileSite) { 6571 if (minPrefWidth > Math.max(0, viewWidth)) { 6572 mMinZoomScale = (float) viewWidth / minPrefWidth; 6573 mMinZoomScaleFixed = false; 6574 if (updateZoomOverview) { 6575 WebSettings settings = getSettings(); 6576 mInZoomOverview = settings.getUseWideViewPort() && 6577 settings.getLoadWithOverviewMode(); 6578 } 6579 } else { 6580 mMinZoomScale = restoreState.mDefaultScale; 6581 mMinZoomScaleFixed = true; 6582 } 6583 } else { 6584 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 6585 mMinZoomScaleFixed = false; 6586 } 6587 } else { 6588 mMinZoomScale = restoreState.mMinScale; 6589 mMinZoomScaleFixed = true; 6590 } 6591 if (restoreState.mMaxScale == 0) { 6592 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 6593 } else { 6594 mMaxZoomScale = restoreState.mMaxScale; 6595 } 6596 } 6597 6598 /* 6599 * Request a dropdown menu for a listbox with single selection or a single 6600 * <select> element. 6601 * 6602 * @param array Labels for the listbox. 6603 * @param enabledArray State for each element in the list. See static 6604 * integers in Container class. 6605 * @param selection Which position is initally selected. 6606 */ 6607 void requestListBox(String[] array, int[] enabledArray, int selection) { 6608 mPrivateHandler.post( 6609 new InvokeListBox(array, enabledArray, selection)); 6610 } 6611 6612 // called by JNI 6613 private void sendMoveFocus(int frame, int node) { 6614 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 6615 new WebViewCore.CursorData(frame, node, 0, 0)); 6616 } 6617 6618 // called by JNI 6619 private void sendMoveMouse(int frame, int node, int x, int y) { 6620 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 6621 new WebViewCore.CursorData(frame, node, x, y)); 6622 } 6623 6624 /* 6625 * Send a mouse move event to the webcore thread. 6626 * 6627 * @param removeFocus Pass true if the "mouse" cursor is now over a node 6628 * which wants key events, but it is not the focus. This 6629 * will make the visual appear as though nothing is in 6630 * focus. Remove the WebTextView, if present, and stop 6631 * drawing the blinking caret. 6632 * called by JNI 6633 */ 6634 private void sendMoveMouseIfLatest(boolean removeFocus) { 6635 if (removeFocus) { 6636 clearTextEntry(true); 6637 } 6638 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 6639 cursorData()); 6640 } 6641 6642 // called by JNI 6643 private void sendMotionUp(int touchGeneration, 6644 int frame, int node, int x, int y) { 6645 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6646 touchUpData.mMoveGeneration = touchGeneration; 6647 touchUpData.mFrame = frame; 6648 touchUpData.mNode = node; 6649 touchUpData.mX = x; 6650 touchUpData.mY = y; 6651 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6652 } 6653 6654 6655 private int getScaledMaxXScroll() { 6656 int width; 6657 if (mHeightCanMeasure == false) { 6658 width = getViewWidth() / 4; 6659 } else { 6660 Rect visRect = new Rect(); 6661 calcOurVisibleRect(visRect); 6662 width = visRect.width() / 2; 6663 } 6664 // FIXME the divisor should be retrieved from somewhere 6665 return viewToContentX(width); 6666 } 6667 6668 private int getScaledMaxYScroll() { 6669 int height; 6670 if (mHeightCanMeasure == false) { 6671 height = getViewHeight() / 4; 6672 } else { 6673 Rect visRect = new Rect(); 6674 calcOurVisibleRect(visRect); 6675 height = visRect.height() / 2; 6676 } 6677 // FIXME the divisor should be retrieved from somewhere 6678 // the closest thing today is hard-coded into ScrollView.java 6679 // (from ScrollView.java, line 363) int maxJump = height/2; 6680 return Math.round(height * mInvActualScale); 6681 } 6682 6683 /** 6684 * Called by JNI to invalidate view 6685 */ 6686 private void viewInvalidate() { 6687 invalidate(); 6688 } 6689 6690 // return true if the key was handled 6691 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 6692 long time, boolean ignorePlugin) { 6693 if (mNativeClass == 0) { 6694 return false; 6695 } 6696 if (ignorePlugin == false && nativeFocusIsPlugin()) { 6697 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 6698 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 6699 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 6700 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 6701 , 0, 0, 0); 6702 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 6703 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 6704 return true; 6705 } 6706 mLastCursorTime = time; 6707 mLastCursorBounds = nativeGetCursorRingBounds(); 6708 boolean keyHandled 6709 = nativeMoveCursor(keyCode, count, noScroll) == false; 6710 if (DebugFlags.WEB_VIEW) { 6711 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 6712 + " mLastCursorTime=" + mLastCursorTime 6713 + " handled=" + keyHandled); 6714 } 6715 if (keyHandled == false || mHeightCanMeasure == false) { 6716 return keyHandled; 6717 } 6718 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 6719 if (contentCursorRingBounds.isEmpty()) return keyHandled; 6720 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 6721 Rect visRect = new Rect(); 6722 calcOurVisibleRect(visRect); 6723 Rect outset = new Rect(visRect); 6724 int maxXScroll = visRect.width() / 2; 6725 int maxYScroll = visRect.height() / 2; 6726 outset.inset(-maxXScroll, -maxYScroll); 6727 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 6728 return keyHandled; 6729 } 6730 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 6731 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 6732 maxXScroll); 6733 if (maxH > 0) { 6734 pinScrollBy(maxH, 0, true, 0); 6735 } else { 6736 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 6737 -maxXScroll); 6738 if (maxH < 0) { 6739 pinScrollBy(maxH, 0, true, 0); 6740 } 6741 } 6742 if (mLastCursorBounds.isEmpty()) return keyHandled; 6743 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 6744 return keyHandled; 6745 } 6746 if (DebugFlags.WEB_VIEW) { 6747 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 6748 + contentCursorRingBounds); 6749 } 6750 requestRectangleOnScreen(viewCursorRingBounds); 6751 mUserScroll = true; 6752 return keyHandled; 6753 } 6754 6755 /** 6756 * Set the background color. It's white by default. Pass 6757 * zero to make the view transparent. 6758 * @param color the ARGB color described by Color.java 6759 */ 6760 public void setBackgroundColor(int color) { 6761 mBackgroundColor = color; 6762 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 6763 } 6764 6765 public void debugDump() { 6766 nativeDebugDump(); 6767 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 6768 } 6769 6770 /** 6771 * Draw the HTML page into the specified canvas. This call ignores any 6772 * view-specific zoom, scroll offset, or other changes. It does not draw 6773 * any view-specific chrome, such as progress or URL bars. 6774 * 6775 * @hide only needs to be accessible to Browser and testing 6776 */ 6777 public void drawPage(Canvas canvas) { 6778 mWebViewCore.drawContentPicture(canvas, 0, false, false); 6779 } 6780 6781 /** 6782 * Set the time to wait between passing touches to WebCore. See also the 6783 * TOUCH_SENT_INTERVAL member for further discussion. 6784 * 6785 * @hide This is only used by the DRT test application. 6786 */ 6787 public void setTouchInterval(int interval) { 6788 mCurrentTouchInterval = interval; 6789 } 6790 6791 /** 6792 * Update our cache with updatedText. 6793 * @param updatedText The new text to put in our cache. 6794 */ 6795 /* package */ void updateCachedTextfield(String updatedText) { 6796 // Also place our generation number so that when we look at the cache 6797 // we recognize that it is up to date. 6798 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 6799 } 6800 6801 private native int nativeCacheHitFramePointer(); 6802 private native Rect nativeCacheHitNodeBounds(); 6803 private native int nativeCacheHitNodePointer(); 6804 /* package */ native void nativeClearCursor(); 6805 private native void nativeCreate(int ptr); 6806 private native int nativeCursorFramePointer(); 6807 private native Rect nativeCursorNodeBounds(); 6808 private native int nativeCursorNodePointer(); 6809 /* package */ native boolean nativeCursorMatchesFocus(); 6810 private native boolean nativeCursorIntersects(Rect visibleRect); 6811 private native boolean nativeCursorIsAnchor(); 6812 private native boolean nativeCursorIsTextInput(); 6813 private native Point nativeCursorPosition(); 6814 private native String nativeCursorText(); 6815 /** 6816 * Returns true if the native cursor node says it wants to handle key events 6817 * (ala plugins). This can only be called if mNativeClass is non-zero! 6818 */ 6819 private native boolean nativeCursorWantsKeyEvents(); 6820 private native void nativeDebugDump(); 6821 private native void nativeDestroy(); 6822 private native boolean nativeEvaluateLayersAnimations(); 6823 private native void nativeDrawExtras(Canvas canvas, int extra); 6824 private native void nativeDumpDisplayTree(String urlOrNull); 6825 private native int nativeFindAll(String findLower, String findUpper); 6826 private native void nativeFindNext(boolean forward); 6827 /* package */ native int nativeFocusCandidateFramePointer(); 6828 private native boolean nativeFocusCandidateIsPassword(); 6829 private native boolean nativeFocusCandidateIsRtlText(); 6830 private native boolean nativeFocusCandidateIsTextInput(); 6831 /* package */ native int nativeFocusCandidateMaxLength(); 6832 /* package */ native String nativeFocusCandidateName(); 6833 private native Rect nativeFocusCandidateNodeBounds(); 6834 private native int nativeFocusCandidatePointer(); 6835 private native String nativeFocusCandidateText(); 6836 private native int nativeFocusCandidateTextSize(); 6837 /** 6838 * Returns an integer corresponding to WebView.cpp::type. 6839 * See WebTextView.setType() 6840 */ 6841 private native int nativeFocusCandidateType(); 6842 private native boolean nativeFocusIsPlugin(); 6843 /* package */ native int nativeFocusNodePointer(); 6844 private native Rect nativeGetCursorRingBounds(); 6845 private native String nativeGetSelection(); 6846 private native boolean nativeHasCursorNode(); 6847 private native boolean nativeHasFocusNode(); 6848 private native void nativeHideCursor(); 6849 private native String nativeImageURI(int x, int y); 6850 private native void nativeInstrumentReport(); 6851 /* package */ native boolean nativeMoveCursorToNextTextInput(); 6852 // return true if the page has been scrolled 6853 private native boolean nativeMotionUp(int x, int y, int slop); 6854 // returns false if it handled the key 6855 private native boolean nativeMoveCursor(int keyCode, int count, 6856 boolean noScroll); 6857 private native int nativeMoveGeneration(); 6858 private native void nativeMoveSelection(int x, int y, 6859 boolean extendSelection); 6860 private native boolean nativePointInNavCache(int x, int y, int slop); 6861 // Like many other of our native methods, you must make sure that 6862 // mNativeClass is not null before calling this method. 6863 private native void nativeRecordButtons(boolean focused, 6864 boolean pressed, boolean invalidate); 6865 private native void nativeSelectBestAt(Rect rect); 6866 private native void nativeSetFindIsUp(); 6867 private native void nativeSetFollowedLink(boolean followed); 6868 private native void nativeSetHeightCanMeasure(boolean measure); 6869 private native void nativeSetRootLayer(int layer); 6870 private native void nativeSetSelectionPointer(boolean set, 6871 float scale, int x, int y, boolean extendSelection); 6872 private native void nativeSetSelectionRegion(boolean set); 6873 private native int nativeTextGeneration(); 6874 // Never call this version except by updateCachedTextfield(String) - 6875 // we always want to pass in our generation number. 6876 private native void nativeUpdateCachedTextfield(String updatedText, 6877 int generation); 6878 // return NO_LEFTEDGE means failure. 6879 private static final int NO_LEFTEDGE = -1; 6880 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 6881} 6882