WebView.java revision 810f5ccb99a8a05a6d1617b19a4efb2399450318
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.annotation.Widget; 20import android.app.AlertDialog; 21import android.content.Context; 22import android.content.DialogInterface; 23import android.content.Intent; 24import android.content.DialogInterface.OnCancelListener; 25import android.content.pm.PackageManager; 26import android.database.DataSetObserver; 27import android.graphics.Bitmap; 28import android.graphics.BitmapFactory; 29import android.graphics.BitmapShader; 30import android.graphics.Canvas; 31import android.graphics.Color; 32import android.graphics.Interpolator; 33import android.graphics.Matrix; 34import android.graphics.Paint; 35import android.graphics.Picture; 36import android.graphics.Point; 37import android.graphics.Rect; 38import android.graphics.RectF; 39import android.graphics.Region; 40import android.graphics.Shader; 41import android.graphics.drawable.Drawable; 42import android.net.Uri; 43import android.net.http.SslCertificate; 44import android.os.Bundle; 45import android.os.Handler; 46import android.os.Message; 47import android.os.ServiceManager; 48import android.os.SystemClock; 49import android.text.IClipboard; 50import android.text.Selection; 51import android.text.Spannable; 52import android.util.AttributeSet; 53import android.util.EventLog; 54import android.util.Log; 55import android.util.TypedValue; 56import android.view.Gravity; 57import android.view.KeyEvent; 58import android.view.LayoutInflater; 59import android.view.MotionEvent; 60import android.view.ScaleGestureDetector; 61import android.view.SoundEffectConstants; 62import android.view.VelocityTracker; 63import android.view.View; 64import android.view.ViewConfiguration; 65import android.view.ViewGroup; 66import android.view.ViewTreeObserver; 67import android.view.animation.AlphaAnimation; 68import android.view.inputmethod.EditorInfo; 69import android.view.inputmethod.InputConnection; 70import android.view.inputmethod.InputMethodManager; 71import android.webkit.WebTextView.AutoCompleteAdapter; 72import android.webkit.WebViewCore.EventHub; 73import android.webkit.WebViewCore.TouchEventData; 74import android.widget.AbsoluteLayout; 75import android.widget.Adapter; 76import android.widget.AdapterView; 77import android.widget.ArrayAdapter; 78import android.widget.CheckedTextView; 79import android.widget.FrameLayout; 80import android.widget.LinearLayout; 81import android.widget.ListView; 82import android.widget.Scroller; 83import android.widget.Toast; 84import android.widget.ZoomButtonsController; 85import android.widget.ZoomControls; 86import android.widget.AdapterView.OnItemClickListener; 87 88import java.io.File; 89import java.io.FileInputStream; 90import java.io.FileNotFoundException; 91import java.io.FileOutputStream; 92import java.io.IOException; 93import java.net.URLDecoder; 94import java.util.ArrayList; 95import java.util.HashMap; 96import java.util.List; 97import java.util.Map; 98import java.util.Set; 99 100import junit.framework.Assert; 101 102/** 103 * <p>A View that displays web pages. This class is the basis upon which you 104 * can roll your own web browser or simply display some online content within your Activity. 105 * It uses the WebKit rendering engine to display 106 * web pages and includes methods to navigate forward and backward 107 * through a history, zoom in and out, perform text searches and more.</p> 108 * <p>To enable the built-in zoom, set 109 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 110 * (introduced in API version 3). 111 * <p>Note that, in order for your Activity to access the Internet and load web pages 112 * in a WebView, you must add the <var>INTERNET</var> permissions to your 113 * Android Manifest file:</p> 114 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 115 * 116 * <p>This must be a child of the <code><manifest></code> element.</p> 117 * 118 * <h3>Basic usage</h3> 119 * 120 * <p>By default, a WebView provides no browser-like widgets, does not 121 * enable JavaScript and errors will be ignored. If your goal is only 122 * to display some HTML as a part of your UI, this is probably fine; 123 * the user won't need to interact with the web page beyond reading 124 * it, and the web page won't need to interact with the user. If you 125 * actually want a fully blown web browser, then you probably want to 126 * invoke the Browser application with your URL rather than show it 127 * with a WebView. See {@link android.content.Intent} for more information.</p> 128 * 129 * <pre class="prettyprint"> 130 * WebView webview = new WebView(this); 131 * setContentView(webview); 132 * 133 * // Simplest usage: note that an exception will NOT be thrown 134 * // if there is an error loading this page (see below). 135 * webview.loadUrl("http://slashdot.org/"); 136 * 137 * // Of course you can also load from any string: 138 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 139 * webview.loadData(summary, "text/html", "utf-8"); 140 * // ... although note that there are restrictions on what this HTML can do. 141 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 142 * </pre> 143 * 144 * <p>A WebView has several customization points where you can add your 145 * own behavior. These are:</p> 146 * 147 * <ul> 148 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 149 * This class is called when something that might impact a 150 * browser UI happens, for instance, progress updates and 151 * JavaScript alerts are sent here. 152 * </li> 153 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 154 * It will be called when things happen that impact the 155 * rendering of the content, eg, errors or form submissions. You 156 * can also intercept URL loading here.</li> 157 * <li>Via the {@link android.webkit.WebSettings} class, which contains 158 * miscellaneous configuration. </li> 159 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 160 * This lets you bind Java objects into the WebView so they can be 161 * controlled from the web pages JavaScript.</li> 162 * </ul> 163 * 164 * <p>Here's a more complicated example, showing error handling, 165 * settings, and progress notification:</p> 166 * 167 * <pre class="prettyprint"> 168 * // Let's display the progress in the activity title bar, like the 169 * // browser app does. 170 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 171 * 172 * webview.getSettings().setJavaScriptEnabled(true); 173 * 174 * final Activity activity = this; 175 * webview.setWebChromeClient(new WebChromeClient() { 176 * public void onProgressChanged(WebView view, int progress) { 177 * // Activities and WebViews measure progress with different scales. 178 * // The progress meter will automatically disappear when we reach 100% 179 * activity.setProgress(progress * 1000); 180 * } 181 * }); 182 * webview.setWebViewClient(new WebViewClient() { 183 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 184 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 185 * } 186 * }); 187 * 188 * webview.loadUrl("http://slashdot.org/"); 189 * </pre> 190 * 191 * <h3>Cookie and window management</h3> 192 * 193 * <p>For obvious security reasons, your application has its own 194 * cache, cookie store etc - it does not share the Browser 195 * applications data. Cookies are managed on a separate thread, so 196 * operations like index building don't block the UI 197 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 198 * if you want to use cookies in your application. 199 * </p> 200 * 201 * <p>By default, requests by the HTML to open new windows are 202 * ignored. This is true whether they be opened by JavaScript or by 203 * the target attribute on a link. You can customize your 204 * WebChromeClient to provide your own behaviour for opening multiple windows, 205 * and render them in whatever manner you want.</p> 206 * 207 * <p>Standard behavior for an Activity is to be destroyed and 208 * recreated when the devices orientation is changed. This will cause 209 * the WebView to reload the current page. If you don't want that, you 210 * can set your Activity to handle the orientation and keyboardHidden 211 * changes, and then just leave the WebView alone. It'll automatically 212 * re-orient itself as appropriate.</p> 213 */ 214@Widget 215public class WebView extends AbsoluteLayout 216 implements ViewTreeObserver.OnGlobalFocusChangeListener, 217 ViewGroup.OnHierarchyChangeListener { 218 219 // enable debug output for drag trackers 220 private static final boolean DEBUG_DRAG_TRACKER = false; 221 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 222 // the screen all-the-time. Good for profiling our drawing code 223 static private final boolean AUTO_REDRAW_HACK = false; 224 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 225 private boolean mAutoRedraw; 226 227 static final String LOGTAG = "webview"; 228 229 private static class ExtendedZoomControls extends FrameLayout { 230 public ExtendedZoomControls(Context context, AttributeSet attrs) { 231 super(context, attrs); 232 LayoutInflater inflater = (LayoutInflater) 233 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 234 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 235 mPlusMinusZoomControls = (ZoomControls) findViewById( 236 com.android.internal.R.id.zoomControls); 237 findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( 238 View.GONE); 239 } 240 241 public void show(boolean showZoom, boolean canZoomOut) { 242 mPlusMinusZoomControls.setVisibility( 243 showZoom ? View.VISIBLE : View.GONE); 244 fade(View.VISIBLE, 0.0f, 1.0f); 245 } 246 247 public void hide() { 248 fade(View.GONE, 1.0f, 0.0f); 249 } 250 251 private void fade(int visibility, float startAlpha, float endAlpha) { 252 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 253 anim.setDuration(500); 254 startAnimation(anim); 255 setVisibility(visibility); 256 } 257 258 public boolean hasFocus() { 259 return mPlusMinusZoomControls.hasFocus(); 260 } 261 262 public void setOnZoomInClickListener(OnClickListener listener) { 263 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 264 } 265 266 public void setOnZoomOutClickListener(OnClickListener listener) { 267 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 268 } 269 270 ZoomControls mPlusMinusZoomControls; 271 } 272 273 /** 274 * Transportation object for returning WebView across thread boundaries. 275 */ 276 public class WebViewTransport { 277 private WebView mWebview; 278 279 /** 280 * Set the WebView to the transportation object. 281 * @param webview The WebView to transport. 282 */ 283 public synchronized void setWebView(WebView webview) { 284 mWebview = webview; 285 } 286 287 /** 288 * Return the WebView object. 289 * @return WebView The transported WebView object. 290 */ 291 public synchronized WebView getWebView() { 292 return mWebview; 293 } 294 } 295 296 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 297 private final CallbackProxy mCallbackProxy; 298 299 private final WebViewDatabase mDatabase; 300 301 // SSL certificate for the main top-level page (if secure) 302 private SslCertificate mCertificate; 303 304 // Native WebView pointer that is 0 until the native object has been 305 // created. 306 private int mNativeClass; 307 // This would be final but it needs to be set to null when the WebView is 308 // destroyed. 309 private WebViewCore mWebViewCore; 310 // Handler for dispatching UI messages. 311 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 312 private WebTextView mWebTextView; 313 // Used to ignore changes to webkit text that arrives to the UI side after 314 // more key events. 315 private int mTextGeneration; 316 317 /* package */ void incrementTextGeneration() { mTextGeneration++; } 318 319 // Used by WebViewCore to create child views. 320 /* package */ final ViewManager mViewManager; 321 322 // Used to display in full screen mode 323 PluginFullScreenHolder mFullScreenHolder; 324 325 /** 326 * Position of the last touch event. 327 */ 328 private float mLastTouchX; 329 private float mLastTouchY; 330 331 /** 332 * Time of the last touch event. 333 */ 334 private long mLastTouchTime; 335 336 /** 337 * Time of the last time sending touch event to WebViewCore 338 */ 339 private long mLastSentTouchTime; 340 341 /** 342 * The minimum elapsed time before sending another ACTION_MOVE event to 343 * WebViewCore. This really should be tuned for each type of the devices. 344 * For example in Google Map api test case, it takes Dream device at least 345 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 346 * triggering the layout and drawing the picture. While the same process 347 * takes 60+ms on the current high speed device. If we make 348 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 349 * to WebViewCore queue and the real layout and draw events will be pushed 350 * to further, which slows down the refresh rate. Choose 50 to favor the 351 * current high speed devices. For Dream like devices, 100 is a better 352 * choice. Maybe make this in the buildspec later. 353 */ 354 private static final int TOUCH_SENT_INTERVAL = 50; 355 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 356 357 /** 358 * Helper class to get velocity for fling 359 */ 360 VelocityTracker mVelocityTracker; 361 private int mMaximumFling; 362 private float mLastVelocity; 363 private float mLastVelX; 364 private float mLastVelY; 365 366 /** 367 * Touch mode 368 */ 369 private int mTouchMode = TOUCH_DONE_MODE; 370 private static final int TOUCH_INIT_MODE = 1; 371 private static final int TOUCH_DRAG_START_MODE = 2; 372 private static final int TOUCH_DRAG_MODE = 3; 373 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 374 private static final int TOUCH_SHORTPRESS_MODE = 5; 375 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 376 private static final int TOUCH_DONE_MODE = 7; 377 private static final int TOUCH_SELECT_MODE = 8; 378 private static final int TOUCH_PINCH_DRAG = 9; 379 380 // Whether to forward the touch events to WebCore 381 private boolean mForwardTouchEvents = false; 382 383 // Whether to prevent default during touch. The initial value depends on 384 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 385 // for touch down. Otherwise UI will wait for the answer of the first 386 // confirmed move before taking over the control. 387 private static final int PREVENT_DEFAULT_NO = 0; 388 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 389 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 390 private static final int PREVENT_DEFAULT_YES = 3; 391 private static final int PREVENT_DEFAULT_IGNORE = 4; 392 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 393 394 // true when the touch movement exceeds the slop 395 private boolean mConfirmMove; 396 397 // if true, touch events will be first processed by WebCore, if prevent 398 // default is not set, the UI will continue handle them. 399 private boolean mDeferTouchProcess; 400 401 // to avoid interfering with the current touch events, track them 402 // separately. Currently no snapping or fling in the deferred process mode 403 private int mDeferTouchMode = TOUCH_DONE_MODE; 404 private float mLastDeferTouchX; 405 private float mLastDeferTouchY; 406 407 // To keep track of whether the current drag was initiated by a WebTextView, 408 // so that we know not to hide the cursor 409 boolean mDragFromTextInput; 410 411 // Whether or not to draw the cursor ring. 412 private boolean mDrawCursorRing = true; 413 414 // true if onPause has been called (and not onResume) 415 private boolean mIsPaused; 416 417 // true if, during a transition to a new page, we're delaying 418 // deleting a root layer until there's something to draw of the new page. 419 private boolean mDelayedDeleteRootLayer; 420 421 /** 422 * Customizable constant 423 */ 424 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 425 private int mTouchSlopSquare; 426 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 427 private int mDoubleTapSlopSquare; 428 // pre-computed density adjusted navigation slop 429 private int mNavSlop; 430 // This should be ViewConfiguration.getTapTimeout() 431 // But system time out is 100ms, which is too short for the browser. 432 // In the browser, if it switches out of tap too soon, jump tap won't work. 433 private static final int TAP_TIMEOUT = 200; 434 // This should be ViewConfiguration.getLongPressTimeout() 435 // But system time out is 500ms, which is too short for the browser. 436 // With a short timeout, it's difficult to treat trigger a short press. 437 private static final int LONG_PRESS_TIMEOUT = 1000; 438 // needed to avoid flinging after a pause of no movement 439 private static final int MIN_FLING_TIME = 250; 440 // draw unfiltered after drag is held without movement 441 private static final int MOTIONLESS_TIME = 100; 442 // The time that the Zoom Controls are visible before fading away 443 private static final long ZOOM_CONTROLS_TIMEOUT = 444 ViewConfiguration.getZoomControlsTimeout(); 445 // The amount of content to overlap between two screens when going through 446 // pages with the space bar, in pixels. 447 private static final int PAGE_SCROLL_OVERLAP = 24; 448 449 /** 450 * These prevent calling requestLayout if either dimension is fixed. This 451 * depends on the layout parameters and the measure specs. 452 */ 453 boolean mWidthCanMeasure; 454 boolean mHeightCanMeasure; 455 456 // Remember the last dimensions we sent to the native side so we can avoid 457 // sending the same dimensions more than once. 458 int mLastWidthSent; 459 int mLastHeightSent; 460 461 private int mContentWidth; // cache of value from WebViewCore 462 private int mContentHeight; // cache of value from WebViewCore 463 464 // Need to have the separate control for horizontal and vertical scrollbar 465 // style than the View's single scrollbar style 466 private boolean mOverlayHorizontalScrollbar = true; 467 private boolean mOverlayVerticalScrollbar = false; 468 469 // our standard speed. this way small distances will be traversed in less 470 // time than large distances, but we cap the duration, so that very large 471 // distances won't take too long to get there. 472 private static final int STD_SPEED = 480; // pixels per second 473 // time for the longest scroll animation 474 private static final int MAX_DURATION = 750; // milliseconds 475 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 476 private Scroller mScroller; 477 478 private boolean mWrapContent; 479 private static final int MOTIONLESS_FALSE = 0; 480 private static final int MOTIONLESS_PENDING = 1; 481 private static final int MOTIONLESS_TRUE = 2; 482 private static final int MOTIONLESS_IGNORE = 3; 483 private int mHeldMotionless; 484 485 // whether support multi-touch 486 private boolean mSupportMultiTouch; 487 // use the framework's ScaleGestureDetector to handle multi-touch 488 private ScaleGestureDetector mScaleDetector; 489 490 // the anchor point in the document space where VIEW_SIZE_CHANGED should 491 // apply to 492 private int mAnchorX; 493 private int mAnchorY; 494 495 /* 496 * Private message ids 497 */ 498 private static final int REMEMBER_PASSWORD = 1; 499 private static final int NEVER_REMEMBER_PASSWORD = 2; 500 private static final int SWITCH_TO_SHORTPRESS = 3; 501 private static final int SWITCH_TO_LONGPRESS = 4; 502 private static final int RELEASE_SINGLE_TAP = 5; 503 private static final int REQUEST_FORM_DATA = 6; 504 private static final int RESUME_WEBCORE_PRIORITY = 7; 505 private static final int DRAG_HELD_MOTIONLESS = 8; 506 private static final int AWAKEN_SCROLL_BARS = 9; 507 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 508 509 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 510 private static final int LAST_PRIVATE_MSG_ID = PREVENT_DEFAULT_TIMEOUT; 511 512 /* 513 * Package message ids 514 */ 515 //! arg1=x, arg2=y 516 static final int SCROLL_TO_MSG_ID = 101; 517 static final int SCROLL_BY_MSG_ID = 102; 518 //! arg1=x, arg2=y 519 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 520 //! arg1=x, arg2=y 521 static final int SYNC_SCROLL_TO_MSG_ID = 104; 522 static final int NEW_PICTURE_MSG_ID = 105; 523 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 524 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 525 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 526 static final int UPDATE_ZOOM_RANGE = 109; 527 static final int UNHANDLED_NAV_KEY = 110; 528 static final int CLEAR_TEXT_ENTRY = 111; 529 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 530 static final int SHOW_RECT_MSG_ID = 113; 531 static final int LONG_PRESS_CENTER = 114; 532 static final int PREVENT_TOUCH_ID = 115; 533 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 534 // obj=Rect in doc coordinates 535 static final int INVAL_RECT_MSG_ID = 117; 536 static final int REQUEST_KEYBOARD = 118; 537 static final int DO_MOTION_UP = 119; 538 static final int SHOW_FULLSCREEN = 120; 539 static final int HIDE_FULLSCREEN = 121; 540 static final int DOM_FOCUS_CHANGED = 122; 541 static final int IMMEDIATE_REPAINT_MSG_ID = 123; 542 static final int SET_ROOT_LAYER_MSG_ID = 124; 543 static final int RETURN_LABEL = 125; 544 static final int FIND_AGAIN = 126; 545 static final int CENTER_FIT_RECT = 127; 546 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 547 static final int SET_SCROLLBAR_MODES = 129; 548 549 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 550 private static final int LAST_PACKAGE_MSG_ID = SET_SCROLLBAR_MODES; 551 552 static final String[] HandlerPrivateDebugString = { 553 "REMEMBER_PASSWORD", // = 1; 554 "NEVER_REMEMBER_PASSWORD", // = 2; 555 "SWITCH_TO_SHORTPRESS", // = 3; 556 "SWITCH_TO_LONGPRESS", // = 4; 557 "RELEASE_SINGLE_TAP", // = 5; 558 "REQUEST_FORM_DATA", // = 6; 559 "RESUME_WEBCORE_PRIORITY", // = 7; 560 "DRAG_HELD_MOTIONLESS", // = 8; 561 "AWAKEN_SCROLL_BARS", // = 9; 562 "PREVENT_DEFAULT_TIMEOUT" // = 10; 563 }; 564 565 static final String[] HandlerPackageDebugString = { 566 "SCROLL_TO_MSG_ID", // = 101; 567 "SCROLL_BY_MSG_ID", // = 102; 568 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 569 "SYNC_SCROLL_TO_MSG_ID", // = 104; 570 "NEW_PICTURE_MSG_ID", // = 105; 571 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 572 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 573 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 574 "UPDATE_ZOOM_RANGE", // = 109; 575 "UNHANDLED_NAV_KEY", // = 110; 576 "CLEAR_TEXT_ENTRY", // = 111; 577 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 578 "SHOW_RECT_MSG_ID", // = 113; 579 "LONG_PRESS_CENTER", // = 114; 580 "PREVENT_TOUCH_ID", // = 115; 581 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 582 "INVAL_RECT_MSG_ID", // = 117; 583 "REQUEST_KEYBOARD", // = 118; 584 "DO_MOTION_UP", // = 119; 585 "SHOW_FULLSCREEN", // = 120; 586 "HIDE_FULLSCREEN", // = 121; 587 "DOM_FOCUS_CHANGED", // = 122; 588 "IMMEDIATE_REPAINT_MSG_ID", // = 123; 589 "SET_ROOT_LAYER_MSG_ID", // = 124; 590 "RETURN_LABEL", // = 125; 591 "FIND_AGAIN", // = 126; 592 "CENTER_FIT_RECT", // = 127; 593 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 594 "SET_SCROLLBAR_MODES" // = 129; 595 }; 596 597 // If the site doesn't use the viewport meta tag to specify the viewport, 598 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 599 static final int DEFAULT_VIEWPORT_WIDTH = 800; 600 601 // normally we try to fit the content to the minimum preferred width 602 // calculated by the Webkit. To avoid the bad behavior when some site's 603 // minimum preferred width keeps growing when changing the viewport width or 604 // the minimum preferred width is huge, an upper limit is needed. 605 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 606 607 // default scale limit. Depending on the display density 608 private static float DEFAULT_MAX_ZOOM_SCALE; 609 private static float DEFAULT_MIN_ZOOM_SCALE; 610 // scale limit, which can be set through viewport meta tag in the web page 611 private float mMaxZoomScale; 612 private float mMinZoomScale; 613 private boolean mMinZoomScaleFixed = true; 614 615 // initial scale in percent. 0 means using default. 616 private int mInitialScaleInPercent = 0; 617 618 // while in the zoom overview mode, the page's width is fully fit to the 619 // current window. The page is alive, in another words, you can click to 620 // follow the links. Double tap will toggle between zoom overview mode and 621 // the last zoom scale. 622 boolean mInZoomOverview = false; 623 624 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 625 // engadget always have wider mContentWidth no matter what viewport size is. 626 int mZoomOverviewWidth = DEFAULT_VIEWPORT_WIDTH; 627 float mTextWrapScale; 628 629 // default scale. Depending on the display density. 630 static int DEFAULT_SCALE_PERCENT; 631 private float mDefaultScale; 632 633 private static float MINIMUM_SCALE_INCREMENT = 0.01f; 634 635 // set to true temporarily during ScaleGesture triggered zoom 636 private boolean mPreviewZoomOnly = false; 637 638 // computed scale and inverse, from mZoomWidth. 639 private float mActualScale; 640 private float mInvActualScale; 641 // if this is non-zero, it is used on drawing rather than mActualScale 642 private float mZoomScale; 643 private float mInvInitialZoomScale; 644 private float mInvFinalZoomScale; 645 private int mInitialScrollX; 646 private int mInitialScrollY; 647 private long mZoomStart; 648 private static final int ZOOM_ANIMATION_LENGTH = 500; 649 650 private boolean mUserScroll = false; 651 652 private int mSnapScrollMode = SNAP_NONE; 653 private static final int SNAP_NONE = 0; 654 private static final int SNAP_LOCK = 1; // not a separate state 655 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 656 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 657 private boolean mSnapPositive; 658 659 // keep these in sync with their counterparts in WebView.cpp 660 private static final int DRAW_EXTRAS_NONE = 0; 661 private static final int DRAW_EXTRAS_FIND = 1; 662 private static final int DRAW_EXTRAS_SELECTION = 2; 663 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 664 665 // keep this in sync with WebCore:ScrollbarMode in WebKit 666 private static final int SCROLLBAR_AUTO = 0; 667 private static final int SCROLLBAR_ALWAYSOFF = 1; 668 // as we auto fade scrollbar, this is ignored. 669 private static final int SCROLLBAR_ALWAYSON = 2; 670 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 671 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 672 673 // Used to match key downs and key ups 674 private boolean mGotKeyDown; 675 676 /* package */ static boolean mLogEvent = true; 677 678 // for event log 679 private long mLastTouchUpTime = 0; 680 681 /** 682 * URI scheme for telephone number 683 */ 684 public static final String SCHEME_TEL = "tel:"; 685 /** 686 * URI scheme for email address 687 */ 688 public static final String SCHEME_MAILTO = "mailto:"; 689 /** 690 * URI scheme for map address 691 */ 692 public static final String SCHEME_GEO = "geo:0,0?q="; 693 694 private int mBackgroundColor = Color.WHITE; 695 696 // Used to notify listeners of a new picture. 697 private PictureListener mPictureListener; 698 /** 699 * Interface to listen for new pictures as they change. 700 */ 701 public interface PictureListener { 702 /** 703 * Notify the listener that the picture has changed. 704 * @param view The WebView that owns the picture. 705 * @param picture The new picture. 706 */ 707 public void onNewPicture(WebView view, Picture picture); 708 } 709 710 // FIXME: Want to make this public, but need to change the API file. 711 public /*static*/ class HitTestResult { 712 /** 713 * Default HitTestResult, where the target is unknown 714 */ 715 public static final int UNKNOWN_TYPE = 0; 716 /** 717 * HitTestResult for hitting a HTML::a tag 718 */ 719 public static final int ANCHOR_TYPE = 1; 720 /** 721 * HitTestResult for hitting a phone number 722 */ 723 public static final int PHONE_TYPE = 2; 724 /** 725 * HitTestResult for hitting a map address 726 */ 727 public static final int GEO_TYPE = 3; 728 /** 729 * HitTestResult for hitting an email address 730 */ 731 public static final int EMAIL_TYPE = 4; 732 /** 733 * HitTestResult for hitting an HTML::img tag 734 */ 735 public static final int IMAGE_TYPE = 5; 736 /** 737 * HitTestResult for hitting a HTML::a tag which contains HTML::img 738 */ 739 public static final int IMAGE_ANCHOR_TYPE = 6; 740 /** 741 * HitTestResult for hitting a HTML::a tag with src=http 742 */ 743 public static final int SRC_ANCHOR_TYPE = 7; 744 /** 745 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 746 */ 747 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 748 /** 749 * HitTestResult for hitting an edit text area 750 */ 751 public static final int EDIT_TEXT_TYPE = 9; 752 753 private int mType; 754 private String mExtra; 755 756 HitTestResult() { 757 mType = UNKNOWN_TYPE; 758 } 759 760 private void setType(int type) { 761 mType = type; 762 } 763 764 private void setExtra(String extra) { 765 mExtra = extra; 766 } 767 768 public int getType() { 769 return mType; 770 } 771 772 public String getExtra() { 773 return mExtra; 774 } 775 } 776 777 // The View containing the zoom controls 778 private ExtendedZoomControls mZoomControls; 779 private Runnable mZoomControlRunnable; 780 781 // mZoomButtonsController will be lazy initialized in 782 // getZoomButtonsController() to get better performance. 783 private ZoomButtonsController mZoomButtonsController; 784 785 // These keep track of the center point of the zoom. They are used to 786 // determine the point around which we should zoom. 787 private float mZoomCenterX; 788 private float mZoomCenterY; 789 790 private ZoomButtonsController.OnZoomListener mZoomListener = 791 new ZoomButtonsController.OnZoomListener() { 792 793 public void onVisibilityChanged(boolean visible) { 794 if (visible) { 795 switchOutDrawHistory(); 796 // Bring back the hidden zoom controls. 797 mZoomButtonsController.getZoomControls().setVisibility( 798 View.VISIBLE); 799 updateZoomButtonsEnabled(); 800 } 801 } 802 803 public void onZoom(boolean zoomIn) { 804 if (zoomIn) { 805 zoomIn(); 806 } else { 807 zoomOut(); 808 } 809 810 updateZoomButtonsEnabled(); 811 } 812 }; 813 814 /** 815 * Construct a new WebView with a Context object. 816 * @param context A Context object used to access application assets. 817 */ 818 public WebView(Context context) { 819 this(context, null); 820 } 821 822 /** 823 * Construct a new WebView with layout parameters. 824 * @param context A Context object used to access application assets. 825 * @param attrs An AttributeSet passed to our parent. 826 */ 827 public WebView(Context context, AttributeSet attrs) { 828 this(context, attrs, com.android.internal.R.attr.webViewStyle); 829 } 830 831 /** 832 * Construct a new WebView with layout parameters and a default style. 833 * @param context A Context object used to access application assets. 834 * @param attrs An AttributeSet passed to our parent. 835 * @param defStyle The default style resource ID. 836 */ 837 public WebView(Context context, AttributeSet attrs, int defStyle) { 838 this(context, attrs, defStyle, null); 839 } 840 841 /** 842 * Construct a new WebView with layout parameters, a default style and a set 843 * of custom Javscript interfaces to be added to the WebView at initialization 844 * time. This guarantees that these interfaces will be available when the JS 845 * context is initialized. 846 * @param context A Context object used to access application assets. 847 * @param attrs An AttributeSet passed to our parent. 848 * @param defStyle The default style resource ID. 849 * @param javascriptInterfaces is a Map of intareface names, as keys, and 850 * object implementing those interfaces, as values. 851 * @hide pending API council approval. 852 */ 853 protected WebView(Context context, AttributeSet attrs, int defStyle, 854 Map<String, Object> javascriptInterfaces) { 855 super(context, attrs, defStyle); 856 init(); 857 858 mCallbackProxy = new CallbackProxy(context, this); 859 mViewManager = new ViewManager(this); 860 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 861 mDatabase = WebViewDatabase.getInstance(context); 862 mScroller = new Scroller(context); 863 864 updateMultiTouchSupport(context); 865 } 866 867 void updateMultiTouchSupport(Context context) { 868 WebSettings settings = getSettings(); 869 mSupportMultiTouch = context.getPackageManager().hasSystemFeature( 870 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 871 && settings.supportZoom() && settings.getBuiltInZoomControls(); 872 if (mSupportMultiTouch && (mScaleDetector == null)) { 873 mScaleDetector = new ScaleGestureDetector(context, 874 new ScaleDetectorListener()); 875 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 876 mScaleDetector = null; 877 } 878 } 879 880 private void updateZoomButtonsEnabled() { 881 if (mZoomButtonsController == null) return; 882 boolean canZoomIn = mActualScale < mMaxZoomScale; 883 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 884 if (!canZoomIn && !canZoomOut) { 885 // Hide the zoom in and out buttons, as well as the fit to page 886 // button, if the page cannot zoom 887 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 888 } else { 889 // Set each one individually, as a page may be able to zoom in 890 // or out. 891 mZoomButtonsController.setZoomInEnabled(canZoomIn); 892 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 893 } 894 } 895 896 private void init() { 897 setWillNotDraw(false); 898 setFocusable(true); 899 setFocusableInTouchMode(true); 900 setClickable(true); 901 setLongClickable(true); 902 903 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 904 int slop = configuration.getScaledTouchSlop(); 905 mTouchSlopSquare = slop * slop; 906 mMinLockSnapReverseDistance = slop; 907 slop = configuration.getScaledDoubleTapSlop(); 908 mDoubleTapSlopSquare = slop * slop; 909 final float density = getContext().getResources().getDisplayMetrics().density; 910 // use one line height, 16 based on our current default font, for how 911 // far we allow a touch be away from the edge of a link 912 mNavSlop = (int) (16 * density); 913 // density adjusted scale factors 914 DEFAULT_SCALE_PERCENT = (int) (100 * density); 915 mDefaultScale = density; 916 mActualScale = density; 917 mInvActualScale = 1 / density; 918 mTextWrapScale = density; 919 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 920 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 921 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 922 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 923 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 924 } 925 926 /* package */void updateDefaultZoomDensity(int zoomDensity) { 927 final float density = getContext().getResources().getDisplayMetrics().density 928 * 100 / zoomDensity; 929 if (Math.abs(density - mDefaultScale) > 0.01) { 930 float scaleFactor = density / mDefaultScale; 931 // adjust the limits 932 mNavSlop = (int) (16 * density); 933 DEFAULT_SCALE_PERCENT = (int) (100 * density); 934 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 935 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 936 mDefaultScale = density; 937 mMaxZoomScale *= scaleFactor; 938 mMinZoomScale *= scaleFactor; 939 setNewZoomScale(mActualScale * scaleFactor, true, false); 940 } 941 } 942 943 /* package */ boolean onSavePassword(String schemePlusHost, String username, 944 String password, final Message resumeMsg) { 945 boolean rVal = false; 946 if (resumeMsg == null) { 947 // null resumeMsg implies saving password silently 948 mDatabase.setUsernamePassword(schemePlusHost, username, password); 949 } else { 950 final Message remember = mPrivateHandler.obtainMessage( 951 REMEMBER_PASSWORD); 952 remember.getData().putString("host", schemePlusHost); 953 remember.getData().putString("username", username); 954 remember.getData().putString("password", password); 955 remember.obj = resumeMsg; 956 957 final Message neverRemember = mPrivateHandler.obtainMessage( 958 NEVER_REMEMBER_PASSWORD); 959 neverRemember.getData().putString("host", schemePlusHost); 960 neverRemember.getData().putString("username", username); 961 neverRemember.getData().putString("password", password); 962 neverRemember.obj = resumeMsg; 963 964 new AlertDialog.Builder(getContext()) 965 .setTitle(com.android.internal.R.string.save_password_label) 966 .setMessage(com.android.internal.R.string.save_password_message) 967 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 968 new DialogInterface.OnClickListener() { 969 public void onClick(DialogInterface dialog, int which) { 970 resumeMsg.sendToTarget(); 971 } 972 }) 973 .setNeutralButton(com.android.internal.R.string.save_password_remember, 974 new DialogInterface.OnClickListener() { 975 public void onClick(DialogInterface dialog, int which) { 976 remember.sendToTarget(); 977 } 978 }) 979 .setNegativeButton(com.android.internal.R.string.save_password_never, 980 new DialogInterface.OnClickListener() { 981 public void onClick(DialogInterface dialog, int which) { 982 neverRemember.sendToTarget(); 983 } 984 }) 985 .setOnCancelListener(new OnCancelListener() { 986 public void onCancel(DialogInterface dialog) { 987 resumeMsg.sendToTarget(); 988 } 989 }).show(); 990 // Return true so that WebViewCore will pause while the dialog is 991 // up. 992 rVal = true; 993 } 994 return rVal; 995 } 996 997 @Override 998 public void setScrollBarStyle(int style) { 999 if (style == View.SCROLLBARS_INSIDE_INSET 1000 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1001 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1002 } else { 1003 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1004 } 1005 super.setScrollBarStyle(style); 1006 } 1007 1008 /** 1009 * Specify whether the horizontal scrollbar has overlay style. 1010 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1011 */ 1012 public void setHorizontalScrollbarOverlay(boolean overlay) { 1013 mOverlayHorizontalScrollbar = overlay; 1014 } 1015 1016 /** 1017 * Specify whether the vertical scrollbar has overlay style. 1018 * @param overlay TRUE if vertical scrollbar should have overlay style. 1019 */ 1020 public void setVerticalScrollbarOverlay(boolean overlay) { 1021 mOverlayVerticalScrollbar = overlay; 1022 } 1023 1024 /** 1025 * Return whether horizontal scrollbar has overlay style 1026 * @return TRUE if horizontal scrollbar has overlay style. 1027 */ 1028 public boolean overlayHorizontalScrollbar() { 1029 return mOverlayHorizontalScrollbar; 1030 } 1031 1032 /** 1033 * Return whether vertical scrollbar has overlay style 1034 * @return TRUE if vertical scrollbar has overlay style. 1035 */ 1036 public boolean overlayVerticalScrollbar() { 1037 return mOverlayVerticalScrollbar; 1038 } 1039 1040 /* 1041 * Return the width of the view where the content of WebView should render 1042 * to. 1043 * Note: this can be called from WebCoreThread. 1044 */ 1045 /* package */ int getViewWidth() { 1046 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1047 return getWidth(); 1048 } else { 1049 return getWidth() - getVerticalScrollbarWidth(); 1050 } 1051 } 1052 1053 /* 1054 * returns the height of the titlebarview (if any). Does not care about 1055 * scrolling 1056 */ 1057 private int getTitleHeight() { 1058 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1059 } 1060 1061 /* 1062 * Return the amount of the titlebarview (if any) that is visible 1063 */ 1064 private int getVisibleTitleHeight() { 1065 return Math.max(getTitleHeight() - mScrollY, 0); 1066 } 1067 1068 /* 1069 * Return the height of the view where the content of WebView should render 1070 * to. Note that this excludes mTitleBar, if there is one. 1071 * Note: this can be called from WebCoreThread. 1072 */ 1073 /* package */ int getViewHeight() { 1074 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1075 } 1076 1077 private int getViewHeightWithTitle() { 1078 int height = getHeight(); 1079 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1080 height -= getHorizontalScrollbarHeight(); 1081 } 1082 return height; 1083 } 1084 1085 /** 1086 * @return The SSL certificate for the main top-level page or null if 1087 * there is no certificate (the site is not secure). 1088 */ 1089 public SslCertificate getCertificate() { 1090 return mCertificate; 1091 } 1092 1093 /** 1094 * Sets the SSL certificate for the main top-level page. 1095 */ 1096 public void setCertificate(SslCertificate certificate) { 1097 if (DebugFlags.WEB_VIEW) { 1098 Log.v(LOGTAG, "setCertificate=" + certificate); 1099 } 1100 // here, the certificate can be null (if the site is not secure) 1101 mCertificate = certificate; 1102 } 1103 1104 //------------------------------------------------------------------------- 1105 // Methods called by activity 1106 //------------------------------------------------------------------------- 1107 1108 /** 1109 * Save the username and password for a particular host in the WebView's 1110 * internal database. 1111 * @param host The host that required the credentials. 1112 * @param username The username for the given host. 1113 * @param password The password for the given host. 1114 */ 1115 public void savePassword(String host, String username, String password) { 1116 mDatabase.setUsernamePassword(host, username, password); 1117 } 1118 1119 /** 1120 * Set the HTTP authentication credentials for a given host and realm. 1121 * 1122 * @param host The host for the credentials. 1123 * @param realm The realm for the credentials. 1124 * @param username The username for the password. If it is null, it means 1125 * password can't be saved. 1126 * @param password The password 1127 */ 1128 public void setHttpAuthUsernamePassword(String host, String realm, 1129 String username, String password) { 1130 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1131 } 1132 1133 /** 1134 * Retrieve the HTTP authentication username and password for a given 1135 * host & realm pair 1136 * 1137 * @param host The host for which the credentials apply. 1138 * @param realm The realm for which the credentials apply. 1139 * @return String[] if found, String[0] is username, which can be null and 1140 * String[1] is password. Return null if it can't find anything. 1141 */ 1142 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1143 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1144 } 1145 1146 /** 1147 * Destroy the internal state of the WebView. This method should be called 1148 * after the WebView has been removed from the view system. No other 1149 * methods may be called on a WebView after destroy. 1150 */ 1151 public void destroy() { 1152 clearTextEntry(false); 1153 if (mWebViewCore != null) { 1154 // Set the handlers to null before destroying WebViewCore so no 1155 // more messages will be posted. 1156 mCallbackProxy.setWebViewClient(null); 1157 mCallbackProxy.setWebChromeClient(null); 1158 // Tell WebViewCore to destroy itself 1159 synchronized (this) { 1160 WebViewCore webViewCore = mWebViewCore; 1161 mWebViewCore = null; // prevent using partial webViewCore 1162 webViewCore.destroy(); 1163 } 1164 // Remove any pending messages that might not be serviced yet. 1165 mPrivateHandler.removeCallbacksAndMessages(null); 1166 mCallbackProxy.removeCallbacksAndMessages(null); 1167 // Wake up the WebCore thread just in case it is waiting for a 1168 // javascript dialog. 1169 synchronized (mCallbackProxy) { 1170 mCallbackProxy.notify(); 1171 } 1172 } 1173 if (mNativeClass != 0) { 1174 nativeDestroy(); 1175 mNativeClass = 0; 1176 } 1177 } 1178 1179 /** 1180 * Enables platform notifications of data state and proxy changes. 1181 */ 1182 public static void enablePlatformNotifications() { 1183 Network.enablePlatformNotifications(); 1184 } 1185 1186 /** 1187 * If platform notifications are enabled, this should be called 1188 * from the Activity's onPause() or onStop(). 1189 */ 1190 public static void disablePlatformNotifications() { 1191 Network.disablePlatformNotifications(); 1192 } 1193 1194 /** 1195 * Sets JavaScript engine flags. 1196 * 1197 * @param flags JS engine flags in a String 1198 * 1199 * @hide pending API solidification 1200 */ 1201 public void setJsFlags(String flags) { 1202 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1203 } 1204 1205 /** 1206 * Inform WebView of the network state. This is used to set 1207 * the javascript property window.navigator.isOnline and 1208 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1209 * @param networkUp boolean indicating if network is available 1210 */ 1211 public void setNetworkAvailable(boolean networkUp) { 1212 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1213 networkUp ? 1 : 0, 0); 1214 } 1215 1216 /** 1217 * Inform WebView about the current network type. 1218 * {@hide} 1219 */ 1220 public void setNetworkType(String type, String subtype) { 1221 Map<String, String> map = new HashMap<String, String>(); 1222 map.put("type", type); 1223 map.put("subtype", subtype); 1224 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1225 } 1226 /** 1227 * Save the state of this WebView used in 1228 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1229 * method no longer stores the display data for this WebView. The previous 1230 * behavior could potentially leak files if {@link #restoreState} was never 1231 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1232 * and restoring the display data. 1233 * @param outState The Bundle to store the WebView state. 1234 * @return The same copy of the back/forward list used to save the state. If 1235 * saveState fails, the returned list will be null. 1236 * @see #savePicture 1237 * @see #restorePicture 1238 */ 1239 public WebBackForwardList saveState(Bundle outState) { 1240 if (outState == null) { 1241 return null; 1242 } 1243 // We grab a copy of the back/forward list because a client of WebView 1244 // may have invalidated the history list by calling clearHistory. 1245 WebBackForwardList list = copyBackForwardList(); 1246 final int currentIndex = list.getCurrentIndex(); 1247 final int size = list.getSize(); 1248 // We should fail saving the state if the list is empty or the index is 1249 // not in a valid range. 1250 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1251 return null; 1252 } 1253 outState.putInt("index", currentIndex); 1254 // FIXME: This should just be a byte[][] instead of ArrayList but 1255 // Parcel.java does not have the code to handle multi-dimensional 1256 // arrays. 1257 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1258 for (int i = 0; i < size; i++) { 1259 WebHistoryItem item = list.getItemAtIndex(i); 1260 if (null == item) { 1261 // FIXME: this shouldn't happen 1262 // need to determine how item got set to null 1263 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1264 return null; 1265 } 1266 byte[] data = item.getFlattenedData(); 1267 if (data == null) { 1268 // It would be very odd to not have any data for a given history 1269 // item. And we will fail to rebuild the history list without 1270 // flattened data. 1271 return null; 1272 } 1273 history.add(data); 1274 } 1275 outState.putSerializable("history", history); 1276 if (mCertificate != null) { 1277 outState.putBundle("certificate", 1278 SslCertificate.saveState(mCertificate)); 1279 } 1280 return list; 1281 } 1282 1283 /** 1284 * Save the current display data to the Bundle given. Used in conjunction 1285 * with {@link #saveState}. 1286 * @param b A Bundle to store the display data. 1287 * @param dest The file to store the serialized picture data. Will be 1288 * overwritten with this WebView's picture data. 1289 * @return True if the picture was successfully saved. 1290 */ 1291 public boolean savePicture(Bundle b, final File dest) { 1292 if (dest == null || b == null) { 1293 return false; 1294 } 1295 final Picture p = capturePicture(); 1296 // Use a temporary file while writing to ensure the destination file 1297 // contains valid data. 1298 final File temp = new File(dest.getPath() + ".writing"); 1299 new Thread(new Runnable() { 1300 public void run() { 1301 try { 1302 FileOutputStream out = new FileOutputStream(temp); 1303 p.writeToStream(out); 1304 out.close(); 1305 // Writing the picture succeeded, rename the temporary file 1306 // to the destination. 1307 temp.renameTo(dest); 1308 } catch (Exception e) { 1309 // too late to do anything about it. 1310 } finally { 1311 temp.delete(); 1312 } 1313 } 1314 }).start(); 1315 // now update the bundle 1316 b.putInt("scrollX", mScrollX); 1317 b.putInt("scrollY", mScrollY); 1318 b.putFloat("scale", mActualScale); 1319 b.putFloat("textwrapScale", mTextWrapScale); 1320 b.putBoolean("overview", mInZoomOverview); 1321 return true; 1322 } 1323 1324 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1325 int sx = b.getInt("scrollX", 0); 1326 int sy = b.getInt("scrollY", 0); 1327 float scale = b.getFloat("scale", 1.0f); 1328 mDrawHistory = true; 1329 mHistoryPicture = p; 1330 mScrollX = sx; 1331 mScrollY = sy; 1332 mHistoryWidth = Math.round(p.getWidth() * scale); 1333 mHistoryHeight = Math.round(p.getHeight() * scale); 1334 // as getWidth() / getHeight() of the view are not available yet, set up 1335 // mActualScale, so that when onSizeChanged() is called, the rest will 1336 // be set correctly 1337 mActualScale = scale; 1338 mInvActualScale = 1 / scale; 1339 mTextWrapScale = b.getFloat("textwrapScale", scale); 1340 mInZoomOverview = b.getBoolean("overview"); 1341 invalidate(); 1342 } 1343 1344 /** 1345 * Restore the display data that was save in {@link #savePicture}. Used in 1346 * conjunction with {@link #restoreState}. 1347 * @param b A Bundle containing the saved display data. 1348 * @param src The file where the picture data was stored. 1349 * @return True if the picture was successfully restored. 1350 */ 1351 public boolean restorePicture(Bundle b, File src) { 1352 if (src == null || b == null) { 1353 return false; 1354 } 1355 if (!src.exists()) { 1356 return false; 1357 } 1358 try { 1359 final FileInputStream in = new FileInputStream(src); 1360 final Bundle copy = new Bundle(b); 1361 new Thread(new Runnable() { 1362 public void run() { 1363 final Picture p = Picture.createFromStream(in); 1364 if (p != null) { 1365 // Post a runnable on the main thread to update the 1366 // history picture fields. 1367 mPrivateHandler.post(new Runnable() { 1368 public void run() { 1369 restoreHistoryPictureFields(p, copy); 1370 } 1371 }); 1372 } 1373 try { 1374 in.close(); 1375 } catch (Exception e) { 1376 // Nothing we can do now. 1377 } 1378 } 1379 }).start(); 1380 } catch (FileNotFoundException e){ 1381 e.printStackTrace(); 1382 } 1383 return true; 1384 } 1385 1386 /** 1387 * Restore the state of this WebView from the given map used in 1388 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1389 * be called to restore the state of the WebView before using the object. If 1390 * it is called after the WebView has had a chance to build state (load 1391 * pages, create a back/forward list, etc.) there may be undesirable 1392 * side-effects. Please note that this method no longer restores the 1393 * display data for this WebView. See {@link #savePicture} and {@link 1394 * #restorePicture} for saving and restoring the display data. 1395 * @param inState The incoming Bundle of state. 1396 * @return The restored back/forward list or null if restoreState failed. 1397 * @see #savePicture 1398 * @see #restorePicture 1399 */ 1400 public WebBackForwardList restoreState(Bundle inState) { 1401 WebBackForwardList returnList = null; 1402 if (inState == null) { 1403 return returnList; 1404 } 1405 if (inState.containsKey("index") && inState.containsKey("history")) { 1406 mCertificate = SslCertificate.restoreState( 1407 inState.getBundle("certificate")); 1408 1409 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1410 final int index = inState.getInt("index"); 1411 // We can't use a clone of the list because we need to modify the 1412 // shared copy, so synchronize instead to prevent concurrent 1413 // modifications. 1414 synchronized (list) { 1415 final List<byte[]> history = 1416 (List<byte[]>) inState.getSerializable("history"); 1417 final int size = history.size(); 1418 // Check the index bounds so we don't crash in native code while 1419 // restoring the history index. 1420 if (index < 0 || index >= size) { 1421 return null; 1422 } 1423 for (int i = 0; i < size; i++) { 1424 byte[] data = history.remove(0); 1425 if (data == null) { 1426 // If we somehow have null data, we cannot reconstruct 1427 // the item and thus our history list cannot be rebuilt. 1428 return null; 1429 } 1430 WebHistoryItem item = new WebHistoryItem(data); 1431 list.addHistoryItem(item); 1432 } 1433 // Grab the most recent copy to return to the caller. 1434 returnList = copyBackForwardList(); 1435 // Update the copy to have the correct index. 1436 returnList.setCurrentIndex(index); 1437 } 1438 // Remove all pending messages because we are restoring previous 1439 // state. 1440 mWebViewCore.removeMessages(); 1441 // Send a restore state message. 1442 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1443 } 1444 return returnList; 1445 } 1446 1447 /** 1448 * Load the given url with the extra headers. 1449 * @param url The url of the resource to load. 1450 * @param extraHeaders The extra headers sent with this url. This should not 1451 * include the common headers like "user-agent". If it does, it 1452 * will be replaced by the intrinsic value of the WebView. 1453 */ 1454 public void loadUrl(String url, Map<String, String> extraHeaders) { 1455 switchOutDrawHistory(); 1456 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1457 arg.mUrl = url; 1458 arg.mExtraHeaders = extraHeaders; 1459 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1460 clearTextEntry(false); 1461 } 1462 1463 /** 1464 * Load the given url. 1465 * @param url The url of the resource to load. 1466 */ 1467 public void loadUrl(String url) { 1468 if (url == null) { 1469 return; 1470 } 1471 loadUrl(url, null); 1472 } 1473 1474 /** 1475 * Load the url with postData using "POST" method into the WebView. If url 1476 * is not a network url, it will be loaded with {link 1477 * {@link #loadUrl(String)} instead. 1478 * 1479 * @param url The url of the resource to load. 1480 * @param postData The data will be passed to "POST" request. 1481 */ 1482 public void postUrl(String url, byte[] postData) { 1483 if (URLUtil.isNetworkUrl(url)) { 1484 switchOutDrawHistory(); 1485 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1486 arg.mUrl = url; 1487 arg.mPostData = postData; 1488 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1489 clearTextEntry(false); 1490 } else { 1491 loadUrl(url); 1492 } 1493 } 1494 1495 /** 1496 * Load the given data into the WebView. This will load the data into 1497 * WebView using the data: scheme. Content loaded through this mechanism 1498 * does not have the ability to load content from the network. 1499 * @param data A String of data in the given encoding. The date must 1500 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1501 * %27, %3f respectively. 1502 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1503 * @param encoding The encoding of the data. i.e. utf-8, base64 1504 */ 1505 public void loadData(String data, String mimeType, String encoding) { 1506 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1507 } 1508 1509 /** 1510 * Load the given data into the WebView, use the provided URL as the base 1511 * URL for the content. The base URL is the URL that represents the page 1512 * that is loaded through this interface. As such, it is used to resolve any 1513 * relative URLs. The historyUrl is used for the history entry. 1514 * <p> 1515 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1516 * files through "file:///android_asset/" for the sub resources is more 1517 * restricted. If you provide null or empty string as baseUrl, you won't be 1518 * able to access asset files. If the baseUrl is anything other than 1519 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1520 * sub resources. 1521 * 1522 * @param baseUrl Url to resolve relative paths with, if null defaults to 1523 * "about:blank" 1524 * @param data A String of data in the given encoding. 1525 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1526 * defaults to "text/html" 1527 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1528 * @param historyUrl URL to use as the history entry. Can be null. 1529 */ 1530 public void loadDataWithBaseURL(String baseUrl, String data, 1531 String mimeType, String encoding, String historyUrl) { 1532 1533 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1534 loadData(data, mimeType, encoding); 1535 return; 1536 } 1537 switchOutDrawHistory(); 1538 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1539 arg.mBaseUrl = baseUrl; 1540 arg.mData = data; 1541 arg.mMimeType = mimeType; 1542 arg.mEncoding = encoding; 1543 arg.mHistoryUrl = historyUrl; 1544 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1545 clearTextEntry(false); 1546 } 1547 1548 /** 1549 * Stop the current load. 1550 */ 1551 public void stopLoading() { 1552 // TODO: should we clear all the messages in the queue before sending 1553 // STOP_LOADING? 1554 switchOutDrawHistory(); 1555 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1556 } 1557 1558 /** 1559 * Reload the current url. 1560 */ 1561 public void reload() { 1562 clearTextEntry(false); 1563 switchOutDrawHistory(); 1564 mWebViewCore.sendMessage(EventHub.RELOAD); 1565 } 1566 1567 /** 1568 * Return true if this WebView has a back history item. 1569 * @return True iff this WebView has a back history item. 1570 */ 1571 public boolean canGoBack() { 1572 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1573 synchronized (l) { 1574 if (l.getClearPending()) { 1575 return false; 1576 } else { 1577 return l.getCurrentIndex() > 0; 1578 } 1579 } 1580 } 1581 1582 /** 1583 * Go back in the history of this WebView. 1584 */ 1585 public void goBack() { 1586 goBackOrForward(-1); 1587 } 1588 1589 /** 1590 * Return true if this WebView has a forward history item. 1591 * @return True iff this Webview has a forward history item. 1592 */ 1593 public boolean canGoForward() { 1594 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1595 synchronized (l) { 1596 if (l.getClearPending()) { 1597 return false; 1598 } else { 1599 return l.getCurrentIndex() < l.getSize() - 1; 1600 } 1601 } 1602 } 1603 1604 /** 1605 * Go forward in the history of this WebView. 1606 */ 1607 public void goForward() { 1608 goBackOrForward(1); 1609 } 1610 1611 /** 1612 * Return true if the page can go back or forward the given 1613 * number of steps. 1614 * @param steps The negative or positive number of steps to move the 1615 * history. 1616 */ 1617 public boolean canGoBackOrForward(int steps) { 1618 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1619 synchronized (l) { 1620 if (l.getClearPending()) { 1621 return false; 1622 } else { 1623 int newIndex = l.getCurrentIndex() + steps; 1624 return newIndex >= 0 && newIndex < l.getSize(); 1625 } 1626 } 1627 } 1628 1629 /** 1630 * Go to the history item that is the number of steps away from 1631 * the current item. Steps is negative if backward and positive 1632 * if forward. 1633 * @param steps The number of steps to take back or forward in the back 1634 * forward list. 1635 */ 1636 public void goBackOrForward(int steps) { 1637 goBackOrForward(steps, false); 1638 } 1639 1640 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1641 if (steps != 0) { 1642 clearTextEntry(false); 1643 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1644 ignoreSnapshot ? 1 : 0); 1645 } 1646 } 1647 1648 private boolean extendScroll(int y) { 1649 int finalY = mScroller.getFinalY(); 1650 int newY = pinLocY(finalY + y); 1651 if (newY == finalY) return false; 1652 mScroller.setFinalY(newY); 1653 mScroller.extendDuration(computeDuration(0, y)); 1654 return true; 1655 } 1656 1657 /** 1658 * Scroll the contents of the view up by half the view size 1659 * @param top true to jump to the top of the page 1660 * @return true if the page was scrolled 1661 */ 1662 public boolean pageUp(boolean top) { 1663 if (mNativeClass == 0) { 1664 return false; 1665 } 1666 nativeClearCursor(); // start next trackball movement from page edge 1667 if (top) { 1668 // go to the top of the document 1669 return pinScrollTo(mScrollX, 0, true, 0); 1670 } 1671 // Page up 1672 int h = getHeight(); 1673 int y; 1674 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1675 y = -h + PAGE_SCROLL_OVERLAP; 1676 } else { 1677 y = -h / 2; 1678 } 1679 mUserScroll = true; 1680 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1681 : extendScroll(y); 1682 } 1683 1684 /** 1685 * Scroll the contents of the view down by half the page size 1686 * @param bottom true to jump to bottom of page 1687 * @return true if the page was scrolled 1688 */ 1689 public boolean pageDown(boolean bottom) { 1690 if (mNativeClass == 0) { 1691 return false; 1692 } 1693 nativeClearCursor(); // start next trackball movement from page edge 1694 if (bottom) { 1695 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1696 } 1697 // Page down. 1698 int h = getHeight(); 1699 int y; 1700 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1701 y = h - PAGE_SCROLL_OVERLAP; 1702 } else { 1703 y = h / 2; 1704 } 1705 mUserScroll = true; 1706 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1707 : extendScroll(y); 1708 } 1709 1710 /** 1711 * Clear the view so that onDraw() will draw nothing but white background, 1712 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1713 */ 1714 public void clearView() { 1715 mContentWidth = 0; 1716 mContentHeight = 0; 1717 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1718 } 1719 1720 /** 1721 * Return a new picture that captures the current display of the webview. 1722 * This is a copy of the display, and will be unaffected if the webview 1723 * later loads a different URL. 1724 * 1725 * @return a picture containing the current contents of the view. Note this 1726 * picture is of the entire document, and is not restricted to the 1727 * bounds of the view. 1728 */ 1729 public Picture capturePicture() { 1730 if (null == mWebViewCore) return null; // check for out of memory tab 1731 return mWebViewCore.copyContentPicture(); 1732 } 1733 1734 /** 1735 * Return true if the browser is displaying a TextView for text input. 1736 */ 1737 private boolean inEditingMode() { 1738 return mWebTextView != null && mWebTextView.getParent() != null; 1739 } 1740 1741 /** 1742 * Remove the WebTextView. 1743 * @param disableFocusController If true, send a message to webkit 1744 * disabling the focus controller, so the caret stops blinking. 1745 */ 1746 private void clearTextEntry(boolean disableFocusController) { 1747 if (inEditingMode()) { 1748 mWebTextView.remove(); 1749 if (disableFocusController) { 1750 setFocusControllerInactive(); 1751 } 1752 } 1753 } 1754 1755 /** 1756 * Return the current scale of the WebView 1757 * @return The current scale. 1758 */ 1759 public float getScale() { 1760 return mActualScale; 1761 } 1762 1763 /** 1764 * Set the initial scale for the WebView. 0 means default. If 1765 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1766 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1767 * WebView starts will this value as initial scale. 1768 * 1769 * @param scaleInPercent The initial scale in percent. 1770 */ 1771 public void setInitialScale(int scaleInPercent) { 1772 mInitialScaleInPercent = scaleInPercent; 1773 } 1774 1775 /** 1776 * Invoke the graphical zoom picker widget for this WebView. This will 1777 * result in the zoom widget appearing on the screen to control the zoom 1778 * level of this WebView. 1779 */ 1780 public void invokeZoomPicker() { 1781 if (!getSettings().supportZoom()) { 1782 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1783 return; 1784 } 1785 clearTextEntry(false); 1786 if (getSettings().getBuiltInZoomControls()) { 1787 getZoomButtonsController().setVisible(true); 1788 } else { 1789 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1790 mPrivateHandler.postDelayed(mZoomControlRunnable, 1791 ZOOM_CONTROLS_TIMEOUT); 1792 } 1793 } 1794 1795 /** 1796 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1797 * is found and the anchor has a non-javascript url, the HitTestResult type 1798 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1799 * anchor does not have a url or if it is a javascript url, the type will 1800 * be UNKNOWN_TYPE and the url has to be retrieved through 1801 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1802 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1803 * the "extra" field. A type of 1804 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1805 * a child node. If a phone number is found, the HitTestResult type is set 1806 * to PHONE_TYPE and the phone number is set in the "extra" field of 1807 * HitTestResult. If a map address is found, the HitTestResult type is set 1808 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1809 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1810 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1811 * HitTestResult type is set to UNKNOWN_TYPE. 1812 */ 1813 public HitTestResult getHitTestResult() { 1814 if (mNativeClass == 0) { 1815 return null; 1816 } 1817 1818 HitTestResult result = new HitTestResult(); 1819 if (nativeHasCursorNode()) { 1820 if (nativeCursorIsTextInput()) { 1821 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1822 } else { 1823 String text = nativeCursorText(); 1824 if (text != null) { 1825 if (text.startsWith(SCHEME_TEL)) { 1826 result.setType(HitTestResult.PHONE_TYPE); 1827 result.setExtra(text.substring(SCHEME_TEL.length())); 1828 } else if (text.startsWith(SCHEME_MAILTO)) { 1829 result.setType(HitTestResult.EMAIL_TYPE); 1830 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1831 } else if (text.startsWith(SCHEME_GEO)) { 1832 result.setType(HitTestResult.GEO_TYPE); 1833 result.setExtra(URLDecoder.decode(text 1834 .substring(SCHEME_GEO.length()))); 1835 } else if (nativeCursorIsAnchor()) { 1836 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1837 result.setExtra(text); 1838 } 1839 } 1840 } 1841 } 1842 int type = result.getType(); 1843 if (type == HitTestResult.UNKNOWN_TYPE 1844 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1845 // Now check to see if it is an image. 1846 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1847 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1848 String text = nativeImageURI(contentX, contentY); 1849 if (text != null) { 1850 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1851 HitTestResult.IMAGE_TYPE : 1852 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1853 result.setExtra(text); 1854 } 1855 } 1856 return result; 1857 } 1858 1859 // Called by JNI when the DOM has changed the focus. Clear the focus so 1860 // that new keys will go to the newly focused field 1861 private void domChangedFocus() { 1862 if (inEditingMode()) { 1863 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 1864 } 1865 } 1866 /** 1867 * Request the href of an anchor element due to getFocusNodePath returning 1868 * "href." If hrefMsg is null, this method returns immediately and does not 1869 * dispatch hrefMsg to its target. 1870 * 1871 * @param hrefMsg This message will be dispatched with the result of the 1872 * request as the data member with "url" as key. The result can 1873 * be null. 1874 */ 1875 // FIXME: API change required to change the name of this function. We now 1876 // look at the cursor node, and not the focus node. Also, what is 1877 // getFocusNodePath? 1878 public void requestFocusNodeHref(Message hrefMsg) { 1879 if (hrefMsg == null || mNativeClass == 0) { 1880 return; 1881 } 1882 if (nativeCursorIsAnchor()) { 1883 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1884 nativeCursorFramePointer(), nativeCursorNodePointer(), 1885 hrefMsg); 1886 } 1887 } 1888 1889 /** 1890 * Request the url of the image last touched by the user. msg will be sent 1891 * to its target with a String representing the url as its object. 1892 * 1893 * @param msg This message will be dispatched with the result of the request 1894 * as the data member with "url" as key. The result can be null. 1895 */ 1896 public void requestImageRef(Message msg) { 1897 if (0 == mNativeClass) return; // client isn't initialized 1898 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1899 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1900 String ref = nativeImageURI(contentX, contentY); 1901 Bundle data = msg.getData(); 1902 data.putString("url", ref); 1903 msg.setData(data); 1904 msg.sendToTarget(); 1905 } 1906 1907 private static int pinLoc(int x, int viewMax, int docMax) { 1908// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1909 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1910 // pin the short document to the top/left of the screen 1911 x = 0; 1912// Log.d(LOGTAG, "--- center " + x); 1913 } else if (x < 0) { 1914 x = 0; 1915// Log.d(LOGTAG, "--- zero"); 1916 } else if (x + viewMax > docMax) { 1917 x = docMax - viewMax; 1918// Log.d(LOGTAG, "--- pin " + x); 1919 } 1920 return x; 1921 } 1922 1923 // Expects x in view coordinates 1924 private int pinLocX(int x) { 1925 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1926 } 1927 1928 // Expects y in view coordinates 1929 private int pinLocY(int y) { 1930 return pinLoc(y, getViewHeightWithTitle(), 1931 computeVerticalScrollRange() + getTitleHeight()); 1932 } 1933 1934 /** 1935 * A title bar which is embedded in this WebView, and scrolls along with it 1936 * vertically, but not horizontally. 1937 */ 1938 private View mTitleBar; 1939 1940 /** 1941 * Since we draw the title bar ourselves, we removed the shadow from the 1942 * browser's activity. We do want a shadow at the bottom of the title bar, 1943 * or at the top of the screen if the title bar is not visible. This 1944 * drawable serves that purpose. 1945 */ 1946 private Drawable mTitleShadow; 1947 1948 /** 1949 * Add or remove a title bar to be embedded into the WebView, and scroll 1950 * along with it vertically, while remaining in view horizontally. Pass 1951 * null to remove the title bar from the WebView, and return to drawing 1952 * the WebView normally without translating to account for the title bar. 1953 * @hide 1954 */ 1955 public void setEmbeddedTitleBar(View v) { 1956 if (mTitleBar == v) return; 1957 if (mTitleBar != null) { 1958 removeView(mTitleBar); 1959 } 1960 if (null != v) { 1961 addView(v, new AbsoluteLayout.LayoutParams( 1962 ViewGroup.LayoutParams.MATCH_PARENT, 1963 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1964 if (mTitleShadow == null) { 1965 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1966 com.android.internal.R.drawable.title_bar_shadow); 1967 } 1968 } 1969 mTitleBar = v; 1970 } 1971 1972 /** 1973 * Given a distance in view space, convert it to content space. Note: this 1974 * does not reflect translation, just scaling, so this should not be called 1975 * with coordinates, but should be called for dimensions like width or 1976 * height. 1977 */ 1978 private int viewToContentDimension(int d) { 1979 return Math.round(d * mInvActualScale); 1980 } 1981 1982 /** 1983 * Given an x coordinate in view space, convert it to content space. Also 1984 * may be used for absolute heights (such as for the WebTextView's 1985 * textSize, which is unaffected by the height of the title bar). 1986 */ 1987 /*package*/ int viewToContentX(int x) { 1988 return viewToContentDimension(x); 1989 } 1990 1991 /** 1992 * Given a y coordinate in view space, convert it to content space. 1993 * Takes into account the height of the title bar if there is one 1994 * embedded into the WebView. 1995 */ 1996 /*package*/ int viewToContentY(int y) { 1997 return viewToContentDimension(y - getTitleHeight()); 1998 } 1999 2000 /** 2001 * Given a x coordinate in view space, convert it to content space. 2002 * Returns the result as a float. 2003 */ 2004 private float viewToContentXf(int x) { 2005 return x * mInvActualScale; 2006 } 2007 2008 /** 2009 * Given a y coordinate in view space, convert it to content space. 2010 * Takes into account the height of the title bar if there is one 2011 * embedded into the WebView. Returns the result as a float. 2012 */ 2013 private float viewToContentYf(int y) { 2014 return (y - getTitleHeight()) * mInvActualScale; 2015 } 2016 2017 /** 2018 * Given a distance in content space, convert it to view space. Note: this 2019 * does not reflect translation, just scaling, so this should not be called 2020 * with coordinates, but should be called for dimensions like width or 2021 * height. 2022 */ 2023 /*package*/ int contentToViewDimension(int d) { 2024 return Math.round(d * mActualScale); 2025 } 2026 2027 /** 2028 * Given an x coordinate in content space, convert it to view 2029 * space. 2030 */ 2031 /*package*/ int contentToViewX(int x) { 2032 return contentToViewDimension(x); 2033 } 2034 2035 /** 2036 * Given a y coordinate in content space, convert it to view 2037 * space. Takes into account the height of the title bar. 2038 */ 2039 /*package*/ int contentToViewY(int y) { 2040 return contentToViewDimension(y) + getTitleHeight(); 2041 } 2042 2043 private Rect contentToViewRect(Rect x) { 2044 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2045 contentToViewX(x.right), contentToViewY(x.bottom)); 2046 } 2047 2048 /* To invalidate a rectangle in content coordinates, we need to transform 2049 the rect into view coordinates, so we can then call invalidate(...). 2050 2051 Normally, we would just call contentToView[XY](...), which eventually 2052 calls Math.round(coordinate * mActualScale). However, for invalidates, 2053 we need to account for the slop that occurs with antialiasing. To 2054 address that, we are a little more liberal in the size of the rect that 2055 we invalidate. 2056 2057 This liberal calculation calls floor() for the top/left, and ceil() for 2058 the bottom/right coordinates. This catches the possible extra pixels of 2059 antialiasing that we might have missed with just round(). 2060 */ 2061 2062 // Called by JNI to invalidate the View, given rectangle coordinates in 2063 // content space 2064 private void viewInvalidate(int l, int t, int r, int b) { 2065 final float scale = mActualScale; 2066 final int dy = getTitleHeight(); 2067 invalidate((int)Math.floor(l * scale), 2068 (int)Math.floor(t * scale) + dy, 2069 (int)Math.ceil(r * scale), 2070 (int)Math.ceil(b * scale) + dy); 2071 } 2072 2073 // Called by JNI to invalidate the View after a delay, given rectangle 2074 // coordinates in content space 2075 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2076 final float scale = mActualScale; 2077 final int dy = getTitleHeight(); 2078 postInvalidateDelayed(delay, 2079 (int)Math.floor(l * scale), 2080 (int)Math.floor(t * scale) + dy, 2081 (int)Math.ceil(r * scale), 2082 (int)Math.ceil(b * scale) + dy); 2083 } 2084 2085 private void invalidateContentRect(Rect r) { 2086 viewInvalidate(r.left, r.top, r.right, r.bottom); 2087 } 2088 2089 // stop the scroll animation, and don't let a subsequent fling add 2090 // to the existing velocity 2091 private void abortAnimation() { 2092 mScroller.abortAnimation(); 2093 mLastVelocity = 0; 2094 } 2095 2096 /* call from webcoreview.draw(), so we're still executing in the UI thread 2097 */ 2098 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2099 2100 // premature data from webkit, ignore 2101 if ((w | h) == 0) { 2102 return; 2103 } 2104 2105 // don't abort a scroll animation if we didn't change anything 2106 if (mContentWidth != w || mContentHeight != h) { 2107 // record new dimensions 2108 mContentWidth = w; 2109 mContentHeight = h; 2110 // If history Picture is drawn, don't update scroll. They will be 2111 // updated when we get out of that mode. 2112 if (!mDrawHistory) { 2113 // repin our scroll, taking into account the new content size 2114 int oldX = mScrollX; 2115 int oldY = mScrollY; 2116 mScrollX = pinLocX(mScrollX); 2117 mScrollY = pinLocY(mScrollY); 2118 if (oldX != mScrollX || oldY != mScrollY) { 2119 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2120 } 2121 if (!mScroller.isFinished()) { 2122 // We are in the middle of a scroll. Repin the final scroll 2123 // position. 2124 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2125 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2126 } 2127 } 2128 } 2129 contentSizeChanged(updateLayout); 2130 } 2131 2132 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 2133 boolean force) { 2134 if (scale < mMinZoomScale) { 2135 scale = mMinZoomScale; 2136 // set mInZoomOverview for non mobile sites 2137 if (scale < mDefaultScale) mInZoomOverview = true; 2138 } else if (scale > mMaxZoomScale) { 2139 scale = mMaxZoomScale; 2140 } 2141 if (updateTextWrapScale) { 2142 mTextWrapScale = scale; 2143 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 2144 mLastHeightSent = 0; 2145 } 2146 if (scale != mActualScale || force) { 2147 if (mDrawHistory) { 2148 // If history Picture is drawn, don't update scroll. They will 2149 // be updated when we get out of that mode. 2150 if (scale != mActualScale && !mPreviewZoomOnly) { 2151 mCallbackProxy.onScaleChanged(mActualScale, scale); 2152 } 2153 mActualScale = scale; 2154 mInvActualScale = 1 / scale; 2155 sendViewSizeZoom(); 2156 } else { 2157 // update our scroll so we don't appear to jump 2158 // i.e. keep the center of the doc in the center of the view 2159 2160 int oldX = mScrollX; 2161 int oldY = mScrollY; 2162 float ratio = scale * mInvActualScale; // old inverse 2163 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2164 float sy = ratio * oldY + (ratio - 1) 2165 * (mZoomCenterY - getTitleHeight()); 2166 2167 // now update our new scale and inverse 2168 if (scale != mActualScale && !mPreviewZoomOnly) { 2169 mCallbackProxy.onScaleChanged(mActualScale, scale); 2170 } 2171 mActualScale = scale; 2172 mInvActualScale = 1 / scale; 2173 2174 // Scale all the child views 2175 mViewManager.scaleAll(); 2176 2177 // as we don't have animation for scaling, don't do animation 2178 // for scrolling, as it causes weird intermediate state 2179 // pinScrollTo(Math.round(sx), Math.round(sy)); 2180 mScrollX = pinLocX(Math.round(sx)); 2181 mScrollY = pinLocY(Math.round(sy)); 2182 2183 // update webkit 2184 if (oldX != mScrollX || oldY != mScrollY) { 2185 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2186 } else { 2187 // the scroll position is adjusted at the beginning of the 2188 // zoom animation. But we want to update the WebKit at the 2189 // end of the zoom animation. See comments in onScaleEnd(). 2190 sendOurVisibleRect(); 2191 } 2192 sendViewSizeZoom(); 2193 } 2194 } 2195 } 2196 2197 // Used to avoid sending many visible rect messages. 2198 private Rect mLastVisibleRectSent; 2199 private Rect mLastGlobalRect; 2200 2201 private Rect sendOurVisibleRect() { 2202 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2203 2204 Rect rect = new Rect(); 2205 calcOurContentVisibleRect(rect); 2206 // Rect.equals() checks for null input. 2207 if (!rect.equals(mLastVisibleRectSent)) { 2208 Point pos = new Point(rect.left, rect.top); 2209 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2210 nativeMoveGeneration(), 0, pos); 2211 mLastVisibleRectSent = rect; 2212 } 2213 Rect globalRect = new Rect(); 2214 if (getGlobalVisibleRect(globalRect) 2215 && !globalRect.equals(mLastGlobalRect)) { 2216 if (DebugFlags.WEB_VIEW) { 2217 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2218 + globalRect.top + ",r=" + globalRect.right + ",b=" 2219 + globalRect.bottom); 2220 } 2221 // TODO: the global offset is only used by windowRect() 2222 // in ChromeClientAndroid ; other clients such as touch 2223 // and mouse events could return view + screen relative points. 2224 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2225 mLastGlobalRect = globalRect; 2226 } 2227 return rect; 2228 } 2229 2230 // Sets r to be the visible rectangle of our webview in view coordinates 2231 private void calcOurVisibleRect(Rect r) { 2232 Point p = new Point(); 2233 getGlobalVisibleRect(r, p); 2234 r.offset(-p.x, -p.y); 2235 } 2236 2237 // Sets r to be our visible rectangle in content coordinates 2238 private void calcOurContentVisibleRect(Rect r) { 2239 calcOurVisibleRect(r); 2240 // pin the rect to the bounds of the content 2241 r.left = Math.max(viewToContentX(r.left), 0); 2242 // viewToContentY will remove the total height of the title bar. Add 2243 // the visible height back in to account for the fact that if the title 2244 // bar is partially visible, the part of the visible rect which is 2245 // displaying our content is displaced by that amount. 2246 r.top = Math.max(viewToContentY(r.top + getVisibleTitleHeight()), 0); 2247 r.right = Math.min(viewToContentX(r.right), mContentWidth); 2248 r.bottom = Math.min(viewToContentY(r.bottom), mContentHeight); 2249 } 2250 2251 // Sets r to be our visible rectangle in content coordinates. We use this 2252 // method on the native side to compute the position of the fixed layers. 2253 // Uses floating coordinates (necessary to correctly place elements when 2254 // the scale factor is not 1) 2255 private void calcOurContentVisibleRectF(RectF r) { 2256 Rect ri = new Rect(0,0,0,0); 2257 calcOurVisibleRect(ri); 2258 // pin the rect to the bounds of the content 2259 r.left = Math.max(viewToContentXf(ri.left), 0.0f); 2260 // viewToContentY will remove the total height of the title bar. Add 2261 // the visible height back in to account for the fact that if the title 2262 // bar is partially visible, the part of the visible rect which is 2263 // displaying our content is displaced by that amount. 2264 r.top = Math.max(viewToContentYf(ri.top + getVisibleTitleHeight()), 0.0f); 2265 r.right = Math.min(viewToContentXf(ri.right), (float)mContentWidth); 2266 r.bottom = Math.min(viewToContentYf(ri.bottom), (float)mContentHeight); 2267 } 2268 2269 static class ViewSizeData { 2270 int mWidth; 2271 int mHeight; 2272 int mTextWrapWidth; 2273 int mAnchorX; 2274 int mAnchorY; 2275 float mScale; 2276 boolean mIgnoreHeight; 2277 } 2278 2279 /** 2280 * Compute unzoomed width and height, and if they differ from the last 2281 * values we sent, send them to webkit (to be used has new viewport) 2282 * 2283 * @return true if new values were sent 2284 */ 2285 private boolean sendViewSizeZoom() { 2286 if (mPreviewZoomOnly) return false; 2287 2288 int viewWidth = getViewWidth(); 2289 int newWidth = Math.round(viewWidth * mInvActualScale); 2290 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2291 /* 2292 * Because the native side may have already done a layout before the 2293 * View system was able to measure us, we have to send a height of 0 to 2294 * remove excess whitespace when we grow our width. This will trigger a 2295 * layout and a change in content size. This content size change will 2296 * mean that contentSizeChanged will either call this method directly or 2297 * indirectly from onSizeChanged. 2298 */ 2299 if (newWidth > mLastWidthSent && mWrapContent) { 2300 newHeight = 0; 2301 } 2302 // Avoid sending another message if the dimensions have not changed. 2303 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2304 ViewSizeData data = new ViewSizeData(); 2305 data.mWidth = newWidth; 2306 data.mHeight = newHeight; 2307 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2308 data.mScale = mActualScale; 2309 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2310 data.mAnchorX = mAnchorX; 2311 data.mAnchorY = mAnchorY; 2312 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2313 mLastWidthSent = newWidth; 2314 mLastHeightSent = newHeight; 2315 mAnchorX = mAnchorY = 0; 2316 return true; 2317 } 2318 return false; 2319 } 2320 2321 @Override 2322 protected int computeHorizontalScrollRange() { 2323 if (mDrawHistory) { 2324 return mHistoryWidth; 2325 } else if (mHorizontalScrollBarMode == SCROLLBAR_ALWAYSOFF 2326 && (mActualScale - mMinZoomScale <= MINIMUM_SCALE_INCREMENT)) { 2327 // only honor the scrollbar mode when it is at minimum zoom level 2328 return computeHorizontalScrollExtent(); 2329 } else { 2330 // to avoid rounding error caused unnecessary scrollbar, use floor 2331 return (int) Math.floor(mContentWidth * mActualScale); 2332 } 2333 } 2334 2335 @Override 2336 protected int computeVerticalScrollRange() { 2337 if (mDrawHistory) { 2338 return mHistoryHeight; 2339 } else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF 2340 && (mActualScale - mMinZoomScale <= MINIMUM_SCALE_INCREMENT)) { 2341 // only honor the scrollbar mode when it is at minimum zoom level 2342 return computeVerticalScrollExtent(); 2343 } else { 2344 // to avoid rounding error caused unnecessary scrollbar, use floor 2345 return (int) Math.floor(mContentHeight * mActualScale); 2346 } 2347 } 2348 2349 @Override 2350 protected int computeVerticalScrollOffset() { 2351 return Math.max(mScrollY - getTitleHeight(), 0); 2352 } 2353 2354 @Override 2355 protected int computeVerticalScrollExtent() { 2356 return getViewHeight(); 2357 } 2358 2359 /** @hide */ 2360 @Override 2361 protected void onDrawVerticalScrollBar(Canvas canvas, 2362 Drawable scrollBar, 2363 int l, int t, int r, int b) { 2364 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2365 scrollBar.draw(canvas); 2366 } 2367 2368 /** 2369 * Get the url for the current page. This is not always the same as the url 2370 * passed to WebViewClient.onPageStarted because although the load for 2371 * that url has begun, the current page may not have changed. 2372 * @return The url for the current page. 2373 */ 2374 public String getUrl() { 2375 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2376 return h != null ? h.getUrl() : null; 2377 } 2378 2379 /** 2380 * Get the original url for the current page. This is not always the same 2381 * as the url passed to WebViewClient.onPageStarted because although the 2382 * load for that url has begun, the current page may not have changed. 2383 * Also, there may have been redirects resulting in a different url to that 2384 * originally requested. 2385 * @return The url that was originally requested for the current page. 2386 */ 2387 public String getOriginalUrl() { 2388 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2389 return h != null ? h.getOriginalUrl() : null; 2390 } 2391 2392 /** 2393 * Get the title for the current page. This is the title of the current page 2394 * until WebViewClient.onReceivedTitle is called. 2395 * @return The title for the current page. 2396 */ 2397 public String getTitle() { 2398 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2399 return h != null ? h.getTitle() : null; 2400 } 2401 2402 /** 2403 * Get the favicon for the current page. This is the favicon of the current 2404 * page until WebViewClient.onReceivedIcon is called. 2405 * @return The favicon for the current page. 2406 */ 2407 public Bitmap getFavicon() { 2408 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2409 return h != null ? h.getFavicon() : null; 2410 } 2411 2412 /** 2413 * Get the touch icon url for the apple-touch-icon <link> element. 2414 * @hide 2415 */ 2416 public String getTouchIconUrl() { 2417 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2418 return h != null ? h.getTouchIconUrl() : null; 2419 } 2420 2421 /** 2422 * Get the progress for the current page. 2423 * @return The progress for the current page between 0 and 100. 2424 */ 2425 public int getProgress() { 2426 return mCallbackProxy.getProgress(); 2427 } 2428 2429 /** 2430 * @return the height of the HTML content. 2431 */ 2432 public int getContentHeight() { 2433 return mContentHeight; 2434 } 2435 2436 /** 2437 * @return the width of the HTML content. 2438 * @hide 2439 */ 2440 public int getContentWidth() { 2441 return mContentWidth; 2442 } 2443 2444 /** 2445 * Pause all layout, parsing, and javascript timers for all webviews. This 2446 * is a global requests, not restricted to just this webview. This can be 2447 * useful if the application has been paused. 2448 */ 2449 public void pauseTimers() { 2450 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2451 } 2452 2453 /** 2454 * Resume all layout, parsing, and javascript timers for all webviews. 2455 * This will resume dispatching all timers. 2456 */ 2457 public void resumeTimers() { 2458 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2459 } 2460 2461 /** 2462 * Call this to pause any extra processing associated with this view and 2463 * its associated DOM/plugins/javascript/etc. For example, if the view is 2464 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2465 * network traffic. When the view is again "active", call onResume(). 2466 * 2467 * Note that this differs from pauseTimers(), which affects all views/DOMs 2468 * @hide 2469 */ 2470 public void onPause() { 2471 if (!mIsPaused) { 2472 mIsPaused = true; 2473 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2474 } 2475 } 2476 2477 /** 2478 * Call this to balanace a previous call to onPause() 2479 * @hide 2480 */ 2481 public void onResume() { 2482 if (mIsPaused) { 2483 mIsPaused = false; 2484 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2485 } 2486 } 2487 2488 /** 2489 * Returns true if the view is paused, meaning onPause() was called. Calling 2490 * onResume() sets the paused state back to false. 2491 * @hide 2492 */ 2493 public boolean isPaused() { 2494 return mIsPaused; 2495 } 2496 2497 /** 2498 * Call this to inform the view that memory is low so that it can 2499 * free any available memory. 2500 */ 2501 public void freeMemory() { 2502 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2503 } 2504 2505 /** 2506 * Clear the resource cache. Note that the cache is per-application, so 2507 * this will clear the cache for all WebViews used. 2508 * 2509 * @param includeDiskFiles If false, only the RAM cache is cleared. 2510 */ 2511 public void clearCache(boolean includeDiskFiles) { 2512 // Note: this really needs to be a static method as it clears cache for all 2513 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2514 // we can't make this static. 2515 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2516 includeDiskFiles ? 1 : 0, 0); 2517 } 2518 2519 /** 2520 * Make sure that clearing the form data removes the adapter from the 2521 * currently focused textfield if there is one. 2522 */ 2523 public void clearFormData() { 2524 if (inEditingMode()) { 2525 AutoCompleteAdapter adapter = null; 2526 mWebTextView.setAdapterCustom(adapter); 2527 } 2528 } 2529 2530 /** 2531 * Tell the WebView to clear its internal back/forward list. 2532 */ 2533 public void clearHistory() { 2534 mCallbackProxy.getBackForwardList().setClearPending(); 2535 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2536 } 2537 2538 /** 2539 * Clear the SSL preferences table stored in response to proceeding with SSL 2540 * certificate errors. 2541 */ 2542 public void clearSslPreferences() { 2543 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2544 } 2545 2546 /** 2547 * Return the WebBackForwardList for this WebView. This contains the 2548 * back/forward list for use in querying each item in the history stack. 2549 * This is a copy of the private WebBackForwardList so it contains only a 2550 * snapshot of the current state. Multiple calls to this method may return 2551 * different objects. The object returned from this method will not be 2552 * updated to reflect any new state. 2553 */ 2554 public WebBackForwardList copyBackForwardList() { 2555 return mCallbackProxy.getBackForwardList().clone(); 2556 } 2557 2558 /* 2559 * Highlight and scroll to the next occurance of String in findAll. 2560 * Wraps the page infinitely, and scrolls. Must be called after 2561 * calling findAll. 2562 * 2563 * @param forward Direction to search. 2564 */ 2565 public void findNext(boolean forward) { 2566 if (0 == mNativeClass) return; // client isn't initialized 2567 nativeFindNext(forward); 2568 } 2569 2570 /* 2571 * Find all instances of find on the page and highlight them. 2572 * @param find String to find. 2573 * @return int The number of occurances of the String "find" 2574 * that were found. 2575 */ 2576 public int findAll(String find) { 2577 if (0 == mNativeClass) return 0; // client isn't initialized 2578 int result = find != null ? nativeFindAll(find.toLowerCase(), 2579 find.toUpperCase()) : 0; 2580 invalidate(); 2581 mLastFind = find; 2582 return result; 2583 } 2584 2585 /** 2586 * @hide 2587 */ 2588 public void setFindIsUp(boolean isUp) { 2589 mFindIsUp = isUp; 2590 if (0 == mNativeClass) return; // client isn't initialized 2591 nativeSetFindIsUp(isUp); 2592 } 2593 2594 /** 2595 * @hide 2596 */ 2597 public int findIndex() { 2598 if (0 == mNativeClass) return -1; 2599 return nativeFindIndex(); 2600 } 2601 2602 /** 2603 * @hide 2604 */ 2605 public boolean getFindIsUp() { return mFindIsUp; } 2606 2607 // Used to know whether the find dialog is open. Affects whether 2608 // or not we draw the highlights for matches. 2609 private boolean mFindIsUp; 2610 2611 // Keep track of the last string sent, so we can search again after an 2612 // orientation change or the dismissal of the soft keyboard. 2613 private String mLastFind; 2614 2615 /** 2616 * Return the first substring consisting of the address of a physical 2617 * location. Currently, only addresses in the United States are detected, 2618 * and consist of: 2619 * - a house number 2620 * - a street name 2621 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2622 * - a city name 2623 * - a state or territory, either spelled out or two-letter abbr. 2624 * - an optional 5 digit or 9 digit zip code. 2625 * 2626 * All names must be correctly capitalized, and the zip code, if present, 2627 * must be valid for the state. The street type must be a standard USPS 2628 * spelling or abbreviation. The state or territory must also be spelled 2629 * or abbreviated using USPS standards. The house number may not exceed 2630 * five digits. 2631 * @param addr The string to search for addresses. 2632 * 2633 * @return the address, or if no address is found, return null. 2634 */ 2635 public static String findAddress(String addr) { 2636 return findAddress(addr, false); 2637 } 2638 2639 /** 2640 * @hide 2641 * Return the first substring consisting of the address of a physical 2642 * location. Currently, only addresses in the United States are detected, 2643 * and consist of: 2644 * - a house number 2645 * - a street name 2646 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2647 * - a city name 2648 * - a state or territory, either spelled out or two-letter abbr. 2649 * - an optional 5 digit or 9 digit zip code. 2650 * 2651 * Names are optionally capitalized, and the zip code, if present, 2652 * must be valid for the state. The street type must be a standard USPS 2653 * spelling or abbreviation. The state or territory must also be spelled 2654 * or abbreviated using USPS standards. The house number may not exceed 2655 * five digits. 2656 * @param addr The string to search for addresses. 2657 * @param caseInsensitive addr Set to true to make search ignore case. 2658 * 2659 * @return the address, or if no address is found, return null. 2660 */ 2661 public static String findAddress(String addr, boolean caseInsensitive) { 2662 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2663 } 2664 2665 /* 2666 * Clear the highlighting surrounding text matches created by findAll. 2667 */ 2668 public void clearMatches() { 2669 mLastFind = ""; 2670 if (mNativeClass == 0) 2671 return; 2672 nativeSetFindIsEmpty(); 2673 invalidate(); 2674 } 2675 2676 /** 2677 * @hide 2678 */ 2679 public void notifyFindDialogDismissed() { 2680 if (mWebViewCore == null) { 2681 return; 2682 } 2683 clearMatches(); 2684 setFindIsUp(false); 2685 // Now that the dialog has been removed, ensure that we scroll to a 2686 // location that is not beyond the end of the page. 2687 pinScrollTo(mScrollX, mScrollY, false, 0); 2688 invalidate(); 2689 } 2690 2691 /** 2692 * Query the document to see if it contains any image references. The 2693 * message object will be dispatched with arg1 being set to 1 if images 2694 * were found and 0 if the document does not reference any images. 2695 * @param response The message that will be dispatched with the result. 2696 */ 2697 public void documentHasImages(Message response) { 2698 if (response == null) { 2699 return; 2700 } 2701 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2702 } 2703 2704 @Override 2705 public void computeScroll() { 2706 if (mScroller.computeScrollOffset()) { 2707 int oldX = mScrollX; 2708 int oldY = mScrollY; 2709 mScrollX = mScroller.getCurrX(); 2710 mScrollY = mScroller.getCurrY(); 2711 postInvalidate(); // So we draw again 2712 if (oldX != mScrollX || oldY != mScrollY) { 2713 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2714 } 2715 } else { 2716 super.computeScroll(); 2717 } 2718 } 2719 2720 private static int computeDuration(int dx, int dy) { 2721 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2722 int duration = distance * 1000 / STD_SPEED; 2723 return Math.min(duration, MAX_DURATION); 2724 } 2725 2726 // helper to pin the scrollBy parameters (already in view coordinates) 2727 // returns true if the scroll was changed 2728 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2729 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2730 } 2731 // helper to pin the scrollTo parameters (already in view coordinates) 2732 // returns true if the scroll was changed 2733 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2734 x = pinLocX(x); 2735 y = pinLocY(y); 2736 int dx = x - mScrollX; 2737 int dy = y - mScrollY; 2738 2739 if ((dx | dy) == 0) { 2740 return false; 2741 } 2742 if (animate) { 2743 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2744 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2745 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2746 awakenScrollBars(mScroller.getDuration()); 2747 invalidate(); 2748 } else { 2749 abortAnimation(); // just in case 2750 scrollTo(x, y); 2751 } 2752 return true; 2753 } 2754 2755 // Scale from content to view coordinates, and pin. 2756 // Also called by jni webview.cpp 2757 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2758 if (mDrawHistory) { 2759 // disallow WebView to change the scroll position as History Picture 2760 // is used in the view system. 2761 // TODO: as we switchOutDrawHistory when trackball or navigation 2762 // keys are hit, this should be safe. Right? 2763 return false; 2764 } 2765 cx = contentToViewDimension(cx); 2766 cy = contentToViewDimension(cy); 2767 if (mHeightCanMeasure) { 2768 // move our visible rect according to scroll request 2769 if (cy != 0) { 2770 Rect tempRect = new Rect(); 2771 calcOurVisibleRect(tempRect); 2772 tempRect.offset(cx, cy); 2773 requestRectangleOnScreen(tempRect); 2774 } 2775 // FIXME: We scroll horizontally no matter what because currently 2776 // ScrollView and ListView will not scroll horizontally. 2777 // FIXME: Why do we only scroll horizontally if there is no 2778 // vertical scroll? 2779// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2780 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2781 } else { 2782 return pinScrollBy(cx, cy, animate, 0); 2783 } 2784 } 2785 2786 /** 2787 * Called by CallbackProxy when the page finishes loading. 2788 * @param url The URL of the page which has finished loading. 2789 */ 2790 /* package */ void onPageFinished(String url) { 2791 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 2792 // If the user is now on a different page, or has scrolled the page 2793 // past the point where the title bar is offscreen, ignore the 2794 // scroll request. 2795 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 2796 && mScrollX == 0 && mScrollY == 0) { 2797 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 2798 SLIDE_TITLE_DURATION); 2799 } 2800 mPageThatNeedsToSlideTitleBarOffScreen = null; 2801 } 2802 } 2803 2804 /** 2805 * The URL of a page that sent a message to scroll the title bar off screen. 2806 * 2807 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 2808 * title bar off the screen. Sometimes, the scroll position is set before 2809 * the page finishes loading. Rather than scrolling while the page is still 2810 * loading, keep track of the URL and new scroll position so we can perform 2811 * the scroll once the page finishes loading. 2812 */ 2813 private String mPageThatNeedsToSlideTitleBarOffScreen; 2814 2815 /** 2816 * The destination Y scroll position to be used when the page finishes 2817 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 2818 */ 2819 private int mYDistanceToSlideTitleOffScreen; 2820 2821 // scale from content to view coordinates, and pin 2822 // return true if pin caused the final x/y different than the request cx/cy, 2823 // and a future scroll may reach the request cx/cy after our size has 2824 // changed 2825 // return false if the view scroll to the exact position as it is requested, 2826 // where negative numbers are taken to mean 0 2827 private boolean setContentScrollTo(int cx, int cy) { 2828 if (mDrawHistory) { 2829 // disallow WebView to change the scroll position as History Picture 2830 // is used in the view system. 2831 // One known case where this is called is that WebCore tries to 2832 // restore the scroll position. As history Picture already uses the 2833 // saved scroll position, it is ok to skip this. 2834 return false; 2835 } 2836 int vx; 2837 int vy; 2838 if ((cx | cy) == 0) { 2839 // If the page is being scrolled to (0,0), do not add in the title 2840 // bar's height, and simply scroll to (0,0). (The only other work 2841 // in contentToView_ is to multiply, so this would not change 0.) 2842 vx = 0; 2843 vy = 0; 2844 } else { 2845 vx = contentToViewX(cx); 2846 vy = contentToViewY(cy); 2847 } 2848// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2849// vx + " " + vy + "]"); 2850 // Some mobile sites attempt to scroll the title bar off the page by 2851 // scrolling to (0,1). If we are at the top left corner of the 2852 // page, assume this is an attempt to scroll off the title bar, and 2853 // animate the title bar off screen slowly enough that the user can see 2854 // it. 2855 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 2856 && mTitleBar != null) { 2857 // FIXME: 100 should be defined somewhere as our max progress. 2858 if (getProgress() < 100) { 2859 // Wait to scroll the title bar off screen until the page has 2860 // finished loading. Keep track of the URL and the destination 2861 // Y position 2862 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 2863 mYDistanceToSlideTitleOffScreen = vy; 2864 } else { 2865 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2866 } 2867 // Since we are animating, we have not yet reached the desired 2868 // scroll position. Do not return true to request another attempt 2869 return false; 2870 } 2871 pinScrollTo(vx, vy, false, 0); 2872 // If the request was to scroll to a negative coordinate, treat it as if 2873 // it was a request to scroll to 0 2874 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2875 return true; 2876 } else { 2877 return false; 2878 } 2879 } 2880 2881 // scale from content to view coordinates, and pin 2882 private void spawnContentScrollTo(int cx, int cy) { 2883 if (mDrawHistory) { 2884 // disallow WebView to change the scroll position as History Picture 2885 // is used in the view system. 2886 return; 2887 } 2888 int vx = contentToViewX(cx); 2889 int vy = contentToViewY(cy); 2890 pinScrollTo(vx, vy, true, 0); 2891 } 2892 2893 /** 2894 * These are from webkit, and are in content coordinate system (unzoomed) 2895 */ 2896 private void contentSizeChanged(boolean updateLayout) { 2897 // suppress 0,0 since we usually see real dimensions soon after 2898 // this avoids drawing the prev content in a funny place. If we find a 2899 // way to consolidate these notifications, this check may become 2900 // obsolete 2901 if ((mContentWidth | mContentHeight) == 0) { 2902 return; 2903 } 2904 2905 if (mHeightCanMeasure) { 2906 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2907 || updateLayout) { 2908 requestLayout(); 2909 } 2910 } else if (mWidthCanMeasure) { 2911 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2912 || updateLayout) { 2913 requestLayout(); 2914 } 2915 } else { 2916 // If we don't request a layout, try to send our view size to the 2917 // native side to ensure that WebCore has the correct dimensions. 2918 sendViewSizeZoom(); 2919 } 2920 } 2921 2922 /** 2923 * Set the WebViewClient that will receive various notifications and 2924 * requests. This will replace the current handler. 2925 * @param client An implementation of WebViewClient. 2926 */ 2927 public void setWebViewClient(WebViewClient client) { 2928 mCallbackProxy.setWebViewClient(client); 2929 } 2930 2931 /** 2932 * Gets the WebViewClient 2933 * @return the current WebViewClient instance. 2934 * 2935 *@hide pending API council approval. 2936 */ 2937 public WebViewClient getWebViewClient() { 2938 return mCallbackProxy.getWebViewClient(); 2939 } 2940 2941 /** 2942 * Register the interface to be used when content can not be handled by 2943 * the rendering engine, and should be downloaded instead. This will replace 2944 * the current handler. 2945 * @param listener An implementation of DownloadListener. 2946 */ 2947 public void setDownloadListener(DownloadListener listener) { 2948 mCallbackProxy.setDownloadListener(listener); 2949 } 2950 2951 /** 2952 * Set the chrome handler. This is an implementation of WebChromeClient for 2953 * use in handling Javascript dialogs, favicons, titles, and the progress. 2954 * This will replace the current handler. 2955 * @param client An implementation of WebChromeClient. 2956 */ 2957 public void setWebChromeClient(WebChromeClient client) { 2958 mCallbackProxy.setWebChromeClient(client); 2959 } 2960 2961 /** 2962 * Gets the chrome handler. 2963 * @return the current WebChromeClient instance. 2964 * 2965 * @hide API council approval. 2966 */ 2967 public WebChromeClient getWebChromeClient() { 2968 return mCallbackProxy.getWebChromeClient(); 2969 } 2970 2971 /** 2972 * Set the back/forward list client. This is an implementation of 2973 * WebBackForwardListClient for handling new items and changes in the 2974 * history index. 2975 * @param client An implementation of WebBackForwardListClient. 2976 * {@hide} 2977 */ 2978 public void setWebBackForwardListClient(WebBackForwardListClient client) { 2979 mCallbackProxy.setWebBackForwardListClient(client); 2980 } 2981 2982 /** 2983 * Gets the WebBackForwardListClient. 2984 * {@hide} 2985 */ 2986 public WebBackForwardListClient getWebBackForwardListClient() { 2987 return mCallbackProxy.getWebBackForwardListClient(); 2988 } 2989 2990 /** 2991 * Set the Picture listener. This is an interface used to receive 2992 * notifications of a new Picture. 2993 * @param listener An implementation of WebView.PictureListener. 2994 */ 2995 public void setPictureListener(PictureListener listener) { 2996 mPictureListener = listener; 2997 } 2998 2999 /** 3000 * {@hide} 3001 */ 3002 /* FIXME: Debug only! Remove for SDK! */ 3003 public void externalRepresentation(Message callback) { 3004 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3005 } 3006 3007 /** 3008 * {@hide} 3009 */ 3010 /* FIXME: Debug only! Remove for SDK! */ 3011 public void documentAsText(Message callback) { 3012 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3013 } 3014 3015 /** 3016 * Use this function to bind an object to Javascript so that the 3017 * methods can be accessed from Javascript. 3018 * <p><strong>IMPORTANT:</strong> 3019 * <ul> 3020 * <li> Using addJavascriptInterface() allows JavaScript to control your 3021 * application. This can be a very useful feature or a dangerous security 3022 * issue. When the HTML in the WebView is untrustworthy (for example, part 3023 * or all of the HTML is provided by some person or process), then an 3024 * attacker could inject HTML that will execute your code and possibly any 3025 * code of the attacker's choosing.<br> 3026 * Do not use addJavascriptInterface() unless all of the HTML in this 3027 * WebView was written by you.</li> 3028 * <li> The Java object that is bound runs in another thread and not in 3029 * the thread that it was constructed in.</li> 3030 * </ul></p> 3031 * @param obj The class instance to bind to Javascript 3032 * @param interfaceName The name to used to expose the class in Javascript 3033 */ 3034 public void addJavascriptInterface(Object obj, String interfaceName) { 3035 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3036 arg.mObject = obj; 3037 arg.mInterfaceName = interfaceName; 3038 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3039 } 3040 3041 /** 3042 * Return the WebSettings object used to control the settings for this 3043 * WebView. 3044 * @return A WebSettings object that can be used to control this WebView's 3045 * settings. 3046 */ 3047 public WebSettings getSettings() { 3048 return mWebViewCore.getSettings(); 3049 } 3050 3051 /** 3052 * Use this method to inform the webview about packages that are installed 3053 * in the system. This information will be used by the 3054 * navigator.isApplicationInstalled() API. 3055 * @param packageNames is a set of package names that are known to be 3056 * installed in the system. 3057 * 3058 * @hide not a public API 3059 */ 3060 public void addPackageNames(Set<String> packageNames) { 3061 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, packageNames); 3062 } 3063 3064 /** 3065 * Use this method to inform the webview about single packages that are 3066 * installed in the system. This information will be used by the 3067 * navigator.isApplicationInstalled() API. 3068 * @param packageName is the name of a package that is known to be 3069 * installed in the system. 3070 * 3071 * @hide not a public API 3072 */ 3073 public void addPackageName(String packageName) { 3074 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 3075 } 3076 3077 /** 3078 * Use this method to inform the webview about packages that are uninstalled 3079 * in the system. This information will be used by the 3080 * navigator.isApplicationInstalled() API. 3081 * @param packageName is the name of a package that has been uninstalled in 3082 * the system. 3083 * 3084 * @hide not a public API 3085 */ 3086 public void removePackageName(String packageName) { 3087 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 3088 } 3089 3090 /** 3091 * Return the list of currently loaded plugins. 3092 * @return The list of currently loaded plugins. 3093 * 3094 * @deprecated This was used for Gears, which has been deprecated. 3095 */ 3096 @Deprecated 3097 public static synchronized PluginList getPluginList() { 3098 return new PluginList(); 3099 } 3100 3101 /** 3102 * @deprecated This was used for Gears, which has been deprecated. 3103 */ 3104 @Deprecated 3105 public void refreshPlugins(boolean reloadOpenPages) { } 3106 3107 //------------------------------------------------------------------------- 3108 // Override View methods 3109 //------------------------------------------------------------------------- 3110 3111 @Override 3112 protected void finalize() throws Throwable { 3113 try { 3114 destroy(); 3115 } finally { 3116 super.finalize(); 3117 } 3118 } 3119 3120 @Override 3121 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3122 if (child == mTitleBar) { 3123 // When drawing the title bar, move it horizontally to always show 3124 // at the top of the WebView. 3125 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3126 } 3127 return super.drawChild(canvas, child, drawingTime); 3128 } 3129 3130 private void drawContent(Canvas canvas) { 3131 // Update the buttons in the picture, so when we draw the picture 3132 // to the screen, they are in the correct state. 3133 // Tell the native side if user is a) touching the screen, 3134 // b) pressing the trackball down, or c) pressing the enter key 3135 // If the cursor is on a button, we need to draw it in the pressed 3136 // state. 3137 // If mNativeClass is 0, we should not reach here, so we do not 3138 // need to check it again. 3139 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3140 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3141 || mTrackballDown || mGotCenterDown, false); 3142 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3143 } 3144 3145 @Override 3146 protected void onDraw(Canvas canvas) { 3147 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3148 if (mNativeClass == 0) { 3149 return; 3150 } 3151 3152 // if both mContentWidth and mContentHeight are 0, it means there is no 3153 // valid Picture passed to WebView yet. This can happen when WebView 3154 // just starts. Draw the background and return. 3155 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3156 canvas.drawColor(mBackgroundColor); 3157 return; 3158 } 3159 3160 int saveCount = canvas.save(); 3161 if (mTitleBar != null) { 3162 canvas.translate(0, (int) mTitleBar.getHeight()); 3163 } 3164 if (mDragTrackerHandler == null) { 3165 drawContent(canvas); 3166 } else { 3167 if (!mDragTrackerHandler.draw(canvas)) { 3168 // sometimes the tracker doesn't draw, even though its active 3169 drawContent(canvas); 3170 } 3171 if (mDragTrackerHandler.isFinished()) { 3172 mDragTrackerHandler = null; 3173 } 3174 } 3175 canvas.restoreToCount(saveCount); 3176 3177 // Now draw the shadow. 3178 int titleH = getVisibleTitleHeight(); 3179 if (mTitleBar != null && titleH == 0) { 3180 int height = (int) (5f * getContext().getResources() 3181 .getDisplayMetrics().density); 3182 mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(), 3183 mScrollY + height); 3184 mTitleShadow.draw(canvas); 3185 } 3186 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3187 invalidate(); 3188 } 3189 if (inEditingMode()) mWebTextView.onDrawSubstitute(); 3190 mWebViewCore.signalRepaintDone(); 3191 } 3192 3193 @Override 3194 public void setLayoutParams(ViewGroup.LayoutParams params) { 3195 if (params.height == LayoutParams.WRAP_CONTENT) { 3196 mWrapContent = true; 3197 } 3198 super.setLayoutParams(params); 3199 } 3200 3201 @Override 3202 public boolean performLongClick() { 3203 // performLongClick() is the result of a delayed message. If we switch 3204 // to windows overview, the WebView will be temporarily removed from the 3205 // view system. In that case, do nothing. 3206 if (getParent() == null) return false; 3207 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3208 // Send the click so that the textfield is in focus 3209 centerKeyPressOnTextField(); 3210 rebuildWebTextView(); 3211 } 3212 if (inEditingMode()) { 3213 return mWebTextView.performLongClick(); 3214 } else { 3215 return super.performLongClick(); 3216 } 3217 } 3218 3219 boolean inAnimateZoom() { 3220 return mZoomScale != 0; 3221 } 3222 3223 /** 3224 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3225 * has changed. This is especially important for password fields, which are 3226 * drawn by the WebTextView, since it conveys more information than what 3227 * webkit draws. Thus we need to reposition it to show in the correct 3228 * place. 3229 */ 3230 private boolean mNeedToAdjustWebTextView; 3231 3232 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3233 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3234 Rect vBox = contentToViewRect(contentBounds); 3235 Rect visibleRect = new Rect(); 3236 calcOurVisibleRect(visibleRect); 3237 // If the textfield is on screen, place the WebTextView in 3238 // its new place, accounting for our new scroll/zoom values, 3239 // and adjust its textsize. 3240 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3241 : visibleRect.contains(vBox)) { 3242 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3243 vBox.height()); 3244 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3245 contentToViewDimension( 3246 nativeFocusCandidateTextSize())); 3247 return true; 3248 } else { 3249 // The textfield is now off screen. The user probably 3250 // was not zooming to see the textfield better. Remove 3251 // the WebTextView. If the user types a key, and the 3252 // textfield is still in focus, we will reconstruct 3253 // the WebTextView and scroll it back on screen. 3254 mWebTextView.remove(); 3255 return false; 3256 } 3257 } 3258 3259 private void drawExtras(Canvas canvas, int extras, boolean animationsRunning) { 3260 // If mNativeClass is 0, we should not reach here, so we do not 3261 // need to check it again. 3262 if (animationsRunning) { 3263 canvas.setDrawFilter(mWebViewCore.mZoomFilter); 3264 } 3265 nativeDrawExtras(canvas, extras); 3266 canvas.setDrawFilter(null); 3267 } 3268 3269 private void drawCoreAndCursorRing(Canvas canvas, int color, 3270 boolean drawCursorRing) { 3271 if (mDrawHistory) { 3272 canvas.scale(mActualScale, mActualScale); 3273 canvas.drawPicture(mHistoryPicture); 3274 return; 3275 } 3276 3277 boolean animateZoom = mZoomScale != 0; 3278 boolean animateScroll = ((!mScroller.isFinished() 3279 || mVelocityTracker != null) 3280 && (mTouchMode != TOUCH_DRAG_MODE || 3281 mHeldMotionless != MOTIONLESS_TRUE)) 3282 || mDeferTouchMode == TOUCH_DRAG_MODE; 3283 if (mTouchMode == TOUCH_DRAG_MODE) { 3284 if (mHeldMotionless == MOTIONLESS_PENDING) { 3285 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3286 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3287 mHeldMotionless = MOTIONLESS_FALSE; 3288 } 3289 if (mHeldMotionless == MOTIONLESS_FALSE) { 3290 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3291 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3292 mHeldMotionless = MOTIONLESS_PENDING; 3293 } 3294 } 3295 if (animateZoom) { 3296 float zoomScale; 3297 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 3298 if (interval < ZOOM_ANIMATION_LENGTH) { 3299 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 3300 zoomScale = 1.0f / (mInvInitialZoomScale 3301 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 3302 invalidate(); 3303 } else { 3304 zoomScale = mZoomScale; 3305 // set mZoomScale to be 0 as we have done animation 3306 mZoomScale = 0; 3307 WebViewCore.resumeUpdatePicture(mWebViewCore); 3308 // call invalidate() again to draw with the final filters 3309 invalidate(); 3310 if (mNeedToAdjustWebTextView) { 3311 mNeedToAdjustWebTextView = false; 3312 if (didUpdateTextViewBounds(false) 3313 && nativeFocusCandidateIsPassword()) { 3314 // If it is a password field, start drawing the 3315 // WebTextView once again. 3316 mWebTextView.setInPassword(true); 3317 } 3318 } 3319 } 3320 // calculate the intermediate scroll position. As we need to use 3321 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 3322 float scale = zoomScale * mInvInitialZoomScale; 3323 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 3324 - mZoomCenterX); 3325 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 3326 * zoomScale)) + mScrollX; 3327 int titleHeight = getTitleHeight(); 3328 int ty = Math.round(scale 3329 * (mInitialScrollY + mZoomCenterY - titleHeight) 3330 - (mZoomCenterY - titleHeight)); 3331 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 3332 - titleHeight, getViewHeight(), Math.round(mContentHeight 3333 * zoomScale)) + titleHeight) + mScrollY; 3334 canvas.translate(tx, ty); 3335 canvas.scale(zoomScale, zoomScale); 3336 if (inEditingMode() && !mNeedToAdjustWebTextView 3337 && mZoomScale != 0) { 3338 // The WebTextView is up. Keep track of this so we can adjust 3339 // its size and placement when we finish zooming 3340 mNeedToAdjustWebTextView = true; 3341 // If it is in password mode, turn it off so it does not draw 3342 // misplaced. 3343 if (nativeFocusCandidateIsPassword()) { 3344 mWebTextView.setInPassword(false); 3345 } 3346 } 3347 } else { 3348 canvas.scale(mActualScale, mActualScale); 3349 } 3350 3351 boolean UIAnimationsRunning = false; 3352 // Currently for each draw we compute the animation values; 3353 // We may in the future decide to do that independently. 3354 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 3355 UIAnimationsRunning = true; 3356 // If we have unfinished (or unstarted) animations, 3357 // we ask for a repaint. 3358 invalidate(); 3359 } 3360 mWebViewCore.drawContentPicture(canvas, color, 3361 (animateZoom || mPreviewZoomOnly || UIAnimationsRunning), 3362 animateScroll); 3363 if (mNativeClass == 0) return; 3364 // decide which adornments to draw 3365 int extras = DRAW_EXTRAS_NONE; 3366 if (mFindIsUp) { 3367 // When the FindDialog is up, only draw the matches if we are not in 3368 // the process of scrolling them into view. 3369 if (!animateScroll) { 3370 extras = DRAW_EXTRAS_FIND; 3371 } 3372 } else if (mShiftIsPressed 3373 && !nativePageShouldHandleShiftAndArrows()) { 3374 if (!animateZoom && !mPreviewZoomOnly) { 3375 extras = DRAW_EXTRAS_SELECTION; 3376 nativeSetSelectionRegion(mTouchSelection || mExtendSelection); 3377 nativeSetSelectionPointer(!mTouchSelection, mInvActualScale, 3378 mSelectX, mSelectY - getTitleHeight(), 3379 mExtendSelection); 3380 } 3381 } else if (drawCursorRing) { 3382 extras = DRAW_EXTRAS_CURSOR_RING; 3383 } 3384 drawExtras(canvas, extras, UIAnimationsRunning); 3385 3386 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3387 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3388 mTouchMode = TOUCH_SHORTPRESS_MODE; 3389 HitTestResult hitTest = getHitTestResult(); 3390 if (hitTest == null 3391 || hitTest.mType == HitTestResult.UNKNOWN_TYPE) { 3392 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3393 } 3394 } 3395 } 3396 if (mFocusSizeChanged) { 3397 mFocusSizeChanged = false; 3398 // If we are zooming, this will get handled above, when the zoom 3399 // finishes. We also do not need to do this unless the WebTextView 3400 // is showing. 3401 if (!animateZoom && inEditingMode()) { 3402 didUpdateTextViewBounds(true); 3403 } 3404 } 3405 } 3406 3407 // draw history 3408 private boolean mDrawHistory = false; 3409 private Picture mHistoryPicture = null; 3410 private int mHistoryWidth = 0; 3411 private int mHistoryHeight = 0; 3412 3413 // Only check the flag, can be called from WebCore thread 3414 boolean drawHistory() { 3415 return mDrawHistory; 3416 } 3417 3418 // Should only be called in UI thread 3419 void switchOutDrawHistory() { 3420 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3421 if (mDrawHistory && mWebViewCore.pictureReady()) { 3422 mDrawHistory = false; 3423 mHistoryPicture = null; 3424 invalidate(); 3425 int oldScrollX = mScrollX; 3426 int oldScrollY = mScrollY; 3427 mScrollX = pinLocX(mScrollX); 3428 mScrollY = pinLocY(mScrollY); 3429 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3430 mUserScroll = false; 3431 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3432 oldScrollY); 3433 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 3434 } else { 3435 sendOurVisibleRect(); 3436 } 3437 } 3438 } 3439 3440 WebViewCore.CursorData cursorData() { 3441 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3442 result.mMoveGeneration = nativeMoveGeneration(); 3443 result.mFrame = nativeCursorFramePointer(); 3444 Point position = nativeCursorPosition(); 3445 result.mX = position.x; 3446 result.mY = position.y; 3447 return result; 3448 } 3449 3450 /** 3451 * Delete text from start to end in the focused textfield. If there is no 3452 * focus, or if start == end, silently fail. If start and end are out of 3453 * order, swap them. 3454 * @param start Beginning of selection to delete. 3455 * @param end End of selection to delete. 3456 */ 3457 /* package */ void deleteSelection(int start, int end) { 3458 mTextGeneration++; 3459 WebViewCore.TextSelectionData data 3460 = new WebViewCore.TextSelectionData(start, end); 3461 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3462 data); 3463 } 3464 3465 /** 3466 * Set the selection to (start, end) in the focused textfield. If start and 3467 * end are out of order, swap them. 3468 * @param start Beginning of selection. 3469 * @param end End of selection. 3470 */ 3471 /* package */ void setSelection(int start, int end) { 3472 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3473 } 3474 3475 @Override 3476 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3477 InputConnection connection = super.onCreateInputConnection(outAttrs); 3478 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3479 return connection; 3480 } 3481 3482 /** 3483 * Called in response to a message from webkit telling us that the soft 3484 * keyboard should be launched. 3485 */ 3486 private void displaySoftKeyboard(boolean isTextView) { 3487 InputMethodManager imm = (InputMethodManager) 3488 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3489 3490 // bring it back to the default scale so that user can enter text 3491 boolean zoom = mActualScale < mDefaultScale; 3492 if (zoom) { 3493 mInZoomOverview = false; 3494 mZoomCenterX = mLastTouchX; 3495 mZoomCenterY = mLastTouchY; 3496 // do not change text wrap scale so that there is no reflow 3497 setNewZoomScale(mDefaultScale, false, false); 3498 } 3499 if (isTextView) { 3500 rebuildWebTextView(); 3501 if (inEditingMode()) { 3502 imm.showSoftInput(mWebTextView, 0); 3503 if (zoom) { 3504 didUpdateTextViewBounds(true); 3505 } 3506 return; 3507 } 3508 } 3509 // Used by plugins. 3510 // Also used if the navigation cache is out of date, and 3511 // does not recognize that a textfield is in focus. In that 3512 // case, use WebView as the targeted view. 3513 // see http://b/issue?id=2457459 3514 imm.showSoftInput(this, 0); 3515 } 3516 3517 // Called by WebKit to instruct the UI to hide the keyboard 3518 private void hideSoftKeyboard() { 3519 InputMethodManager imm = (InputMethodManager) 3520 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3521 3522 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3523 } 3524 3525 /* 3526 * This method checks the current focus and cursor and potentially rebuilds 3527 * mWebTextView to have the appropriate properties, such as password, 3528 * multiline, and what text it contains. It also removes it if necessary. 3529 */ 3530 /* package */ void rebuildWebTextView() { 3531 // If the WebView does not have focus, do nothing until it gains focus. 3532 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3533 return; 3534 } 3535 boolean alreadyThere = inEditingMode(); 3536 // inEditingMode can only return true if mWebTextView is non-null, 3537 // so we can safely call remove() if (alreadyThere) 3538 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3539 if (alreadyThere) { 3540 mWebTextView.remove(); 3541 } 3542 return; 3543 } 3544 // At this point, we know we have found an input field, so go ahead 3545 // and create the WebTextView if necessary. 3546 if (mWebTextView == null) { 3547 mWebTextView = new WebTextView(mContext, WebView.this); 3548 // Initialize our generation number. 3549 mTextGeneration = 0; 3550 } 3551 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3552 contentToViewDimension(nativeFocusCandidateTextSize())); 3553 Rect visibleRect = new Rect(); 3554 calcOurContentVisibleRect(visibleRect); 3555 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3556 // should be in content coordinates. 3557 Rect bounds = nativeFocusCandidateNodeBounds(); 3558 Rect vBox = contentToViewRect(bounds); 3559 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3560 if (!Rect.intersects(bounds, visibleRect)) { 3561 mWebTextView.bringIntoView(); 3562 } 3563 String text = nativeFocusCandidateText(); 3564 int nodePointer = nativeFocusCandidatePointer(); 3565 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3566 // It is possible that we have the same textfield, but it has moved, 3567 // i.e. In the case of opening/closing the screen. 3568 // In that case, we need to set the dimensions, but not the other 3569 // aspects. 3570 // If the text has been changed by webkit, update it. However, if 3571 // there has been more UI text input, ignore it. We will receive 3572 // another update when that text is recognized. 3573 if (text != null && !text.equals(mWebTextView.getText().toString()) 3574 && nativeTextGeneration() == mTextGeneration) { 3575 mWebTextView.setTextAndKeepSelection(text); 3576 } 3577 } else { 3578 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3579 Gravity.RIGHT : Gravity.NO_GRAVITY); 3580 // This needs to be called before setType, which may call 3581 // requestFormData, and it needs to have the correct nodePointer. 3582 mWebTextView.setNodePointer(nodePointer); 3583 mWebTextView.setType(nativeFocusCandidateType()); 3584 if (null == text) { 3585 if (DebugFlags.WEB_VIEW) { 3586 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3587 } 3588 text = ""; 3589 } 3590 mWebTextView.setTextAndKeepSelection(text); 3591 InputMethodManager imm = InputMethodManager.peekInstance(); 3592 if (imm != null && imm.isActive(mWebTextView)) { 3593 imm.restartInput(mWebTextView); 3594 } 3595 } 3596 mWebTextView.requestFocus(); 3597 } 3598 3599 /** 3600 * Called by WebTextView to find saved form data associated with the 3601 * textfield 3602 * @param name Name of the textfield. 3603 * @param nodePointer Pointer to the node of the textfield, so it can be 3604 * compared to the currently focused textfield when the data is 3605 * retrieved. 3606 */ 3607 /* package */ void requestFormData(String name, int nodePointer) { 3608 if (mWebViewCore.getSettings().getSaveFormData()) { 3609 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3610 update.arg1 = nodePointer; 3611 RequestFormData updater = new RequestFormData(name, getUrl(), 3612 update); 3613 Thread t = new Thread(updater); 3614 t.start(); 3615 } 3616 } 3617 3618 /** 3619 * Pass a message to find out the <label> associated with the <input> 3620 * identified by nodePointer 3621 * @param framePointer Pointer to the frame containing the <input> node 3622 * @param nodePointer Pointer to the node for which a <label> is desired. 3623 */ 3624 /* package */ void requestLabel(int framePointer, int nodePointer) { 3625 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3626 nodePointer); 3627 } 3628 3629 /* 3630 * This class requests an Adapter for the WebTextView which shows past 3631 * entries stored in the database. It is a Runnable so that it can be done 3632 * in its own thread, without slowing down the UI. 3633 */ 3634 private class RequestFormData implements Runnable { 3635 private String mName; 3636 private String mUrl; 3637 private Message mUpdateMessage; 3638 3639 public RequestFormData(String name, String url, Message msg) { 3640 mName = name; 3641 mUrl = url; 3642 mUpdateMessage = msg; 3643 } 3644 3645 public void run() { 3646 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3647 if (pastEntries.size() > 0) { 3648 AutoCompleteAdapter adapter = new 3649 AutoCompleteAdapter(mContext, pastEntries); 3650 mUpdateMessage.obj = adapter; 3651 mUpdateMessage.sendToTarget(); 3652 } 3653 } 3654 } 3655 3656 /** 3657 * Dump the display tree to "/sdcard/displayTree.txt" 3658 * 3659 * @hide debug only 3660 */ 3661 public void dumpDisplayTree() { 3662 nativeDumpDisplayTree(getUrl()); 3663 } 3664 3665 /** 3666 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 3667 * "/sdcard/domTree.txt" 3668 * 3669 * @hide debug only 3670 */ 3671 public void dumpDomTree(boolean toFile) { 3672 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 3673 } 3674 3675 /** 3676 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 3677 * to "/sdcard/renderTree.txt" 3678 * 3679 * @hide debug only 3680 */ 3681 public void dumpRenderTree(boolean toFile) { 3682 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 3683 } 3684 3685 /** 3686 * Dump the V8 counters to standard output. 3687 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 3688 * true. Otherwise, this will do nothing. 3689 * 3690 * @hide debug only 3691 */ 3692 public void dumpV8Counters() { 3693 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 3694 } 3695 3696 // This is used to determine long press with the center key. Does not 3697 // affect long press with the trackball/touch. 3698 private boolean mGotCenterDown = false; 3699 3700 @Override 3701 public boolean onKeyDown(int keyCode, KeyEvent event) { 3702 if (DebugFlags.WEB_VIEW) { 3703 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3704 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3705 } 3706 3707 if (mNativeClass == 0) { 3708 return false; 3709 } 3710 3711 // do this hack up front, so it always works, regardless of touch-mode 3712 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3713 mAutoRedraw = !mAutoRedraw; 3714 if (mAutoRedraw) { 3715 invalidate(); 3716 } 3717 return true; 3718 } 3719 3720 // Bubble up the key event if 3721 // 1. it is a system key; or 3722 // 2. the host application wants to handle it; 3723 if (event.isSystem() 3724 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3725 return false; 3726 } 3727 3728 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3729 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3730 if (nativePageShouldHandleShiftAndArrows()) { 3731 mShiftIsPressed = true; 3732 } else if (!nativeCursorWantsKeyEvents() && !mShiftIsPressed) { 3733 setUpSelectXY(); 3734 } 3735 } 3736 3737 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3738 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3739 switchOutDrawHistory(); 3740 if (nativePageShouldHandleShiftAndArrows()) { 3741 letPageHandleNavKey(keyCode, event.getEventTime(), true); 3742 return true; 3743 } 3744 if (mShiftIsPressed) { 3745 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 3746 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 3747 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 3748 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 3749 int multiplier = event.getRepeatCount() + 1; 3750 moveSelection(xRate * multiplier, yRate * multiplier); 3751 return true; 3752 } 3753 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 3754 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3755 return true; 3756 } 3757 // Bubble up the key event as WebView doesn't handle it 3758 return false; 3759 } 3760 3761 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3762 switchOutDrawHistory(); 3763 if (event.getRepeatCount() == 0) { 3764 if (mShiftIsPressed 3765 && !nativePageShouldHandleShiftAndArrows()) { 3766 return true; // discard press if copy in progress 3767 } 3768 mGotCenterDown = true; 3769 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3770 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3771 // Already checked mNativeClass, so we do not need to check it 3772 // again. 3773 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3774 return true; 3775 } 3776 // Bubble up the key event as WebView doesn't handle it 3777 return false; 3778 } 3779 3780 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3781 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3782 // turn off copy select if a shift-key combo is pressed 3783 mExtendSelection = mShiftIsPressed = false; 3784 if (mTouchMode == TOUCH_SELECT_MODE) { 3785 mTouchMode = TOUCH_INIT_MODE; 3786 } 3787 } 3788 3789 if (getSettings().getNavDump()) { 3790 switch (keyCode) { 3791 case KeyEvent.KEYCODE_4: 3792 dumpDisplayTree(); 3793 break; 3794 case KeyEvent.KEYCODE_5: 3795 case KeyEvent.KEYCODE_6: 3796 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 3797 break; 3798 case KeyEvent.KEYCODE_7: 3799 case KeyEvent.KEYCODE_8: 3800 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 3801 break; 3802 case KeyEvent.KEYCODE_9: 3803 nativeInstrumentReport(); 3804 return true; 3805 } 3806 } 3807 3808 if (nativeCursorIsTextInput()) { 3809 // This message will put the node in focus, for the DOM's notion 3810 // of focus, and make the focuscontroller active 3811 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3812 nativeCursorNodePointer()); 3813 // This will bring up the WebTextView and put it in focus, for 3814 // our view system's notion of focus 3815 rebuildWebTextView(); 3816 // Now we need to pass the event to it 3817 if (inEditingMode()) { 3818 mWebTextView.setDefaultSelection(); 3819 return mWebTextView.dispatchKeyEvent(event); 3820 } 3821 } else if (nativeHasFocusNode()) { 3822 // In this case, the cursor is not on a text input, but the focus 3823 // might be. Check it, and if so, hand over to the WebTextView. 3824 rebuildWebTextView(); 3825 if (inEditingMode()) { 3826 mWebTextView.setDefaultSelection(); 3827 return mWebTextView.dispatchKeyEvent(event); 3828 } 3829 } 3830 3831 // TODO: should we pass all the keys to DOM or check the meta tag 3832 if (nativeCursorWantsKeyEvents() || true) { 3833 // pass the key to DOM 3834 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3835 // return true as DOM handles the key 3836 return true; 3837 } 3838 3839 // Bubble up the key event as WebView doesn't handle it 3840 return false; 3841 } 3842 3843 @Override 3844 public boolean onKeyUp(int keyCode, KeyEvent event) { 3845 if (DebugFlags.WEB_VIEW) { 3846 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3847 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3848 } 3849 3850 if (mNativeClass == 0) { 3851 return false; 3852 } 3853 3854 // special CALL handling when cursor node's href is "tel:XXX" 3855 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3856 String text = nativeCursorText(); 3857 if (!nativeCursorIsTextInput() && text != null 3858 && text.startsWith(SCHEME_TEL)) { 3859 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3860 getContext().startActivity(intent); 3861 return true; 3862 } 3863 } 3864 3865 // Bubble up the key event if 3866 // 1. it is a system key; or 3867 // 2. the host application wants to handle it; 3868 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3869 return false; 3870 } 3871 3872 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3873 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3874 if (nativePageShouldHandleShiftAndArrows()) { 3875 mShiftIsPressed = false; 3876 } else if (commitCopy()) { 3877 return true; 3878 } 3879 } 3880 3881 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3882 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3883 if (nativePageShouldHandleShiftAndArrows()) { 3884 letPageHandleNavKey(keyCode, event.getEventTime(), false); 3885 return true; 3886 } 3887 // always handle the navigation keys in the UI thread 3888 // Bubble up the key event as WebView doesn't handle it 3889 return false; 3890 } 3891 3892 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3893 // remove the long press message first 3894 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3895 mGotCenterDown = false; 3896 3897 if (mShiftIsPressed && !nativePageShouldHandleShiftAndArrows()) { 3898 if (mExtendSelection) { 3899 commitCopy(); 3900 } else { 3901 mExtendSelection = true; 3902 invalidate(); // draw the i-beam instead of the arrow 3903 } 3904 return true; // discard press if copy in progress 3905 } 3906 3907 // perform the single click 3908 Rect visibleRect = sendOurVisibleRect(); 3909 // Note that sendOurVisibleRect calls viewToContent, so the 3910 // coordinates should be in content coordinates. 3911 if (!nativeCursorIntersects(visibleRect)) { 3912 return false; 3913 } 3914 WebViewCore.CursorData data = cursorData(); 3915 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3916 playSoundEffect(SoundEffectConstants.CLICK); 3917 if (nativeCursorIsTextInput()) { 3918 rebuildWebTextView(); 3919 centerKeyPressOnTextField(); 3920 if (inEditingMode()) { 3921 mWebTextView.setDefaultSelection(); 3922 } 3923 return true; 3924 } 3925 clearTextEntry(true); 3926 nativeSetFollowedLink(true); 3927 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 3928 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3929 nativeCursorNodePointer()); 3930 } 3931 return true; 3932 } 3933 3934 // TODO: should we pass all the keys to DOM or check the meta tag 3935 if (nativeCursorWantsKeyEvents() || true) { 3936 // pass the key to DOM 3937 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3938 // return true as DOM handles the key 3939 return true; 3940 } 3941 3942 // Bubble up the key event as WebView doesn't handle it 3943 return false; 3944 } 3945 3946 private void setUpSelectXY() { 3947 mExtendSelection = false; 3948 mShiftIsPressed = true; 3949 if (nativeHasCursorNode()) { 3950 Rect rect = nativeCursorNodeBounds(); 3951 mSelectX = contentToViewX(rect.left); 3952 mSelectY = contentToViewY(rect.top); 3953 } else if (mLastTouchY > getVisibleTitleHeight()) { 3954 mSelectX = mScrollX + (int) mLastTouchX; 3955 mSelectY = mScrollY + (int) mLastTouchY; 3956 } else { 3957 mSelectX = mScrollX + getViewWidth() / 2; 3958 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 3959 } 3960 nativeHideCursor(); 3961 } 3962 3963 /** 3964 * Use this method to put the WebView into text selection mode. 3965 * Do not rely on this functionality; it will be deprecated in the future. 3966 */ 3967 public void emulateShiftHeld() { 3968 if (0 == mNativeClass) return; // client isn't initialized 3969 setUpSelectXY(); 3970 } 3971 3972 private boolean commitCopy() { 3973 boolean copiedSomething = false; 3974 if (mExtendSelection) { 3975 String selection = nativeGetSelection(); 3976 if (selection != "") { 3977 if (DebugFlags.WEB_VIEW) { 3978 Log.v(LOGTAG, "commitCopy \"" + selection + "\""); 3979 } 3980 Toast.makeText(mContext 3981 , com.android.internal.R.string.text_copied 3982 , Toast.LENGTH_SHORT).show(); 3983 copiedSomething = true; 3984 try { 3985 IClipboard clip = IClipboard.Stub.asInterface( 3986 ServiceManager.getService("clipboard")); 3987 clip.setClipboardText(selection); 3988 } catch (android.os.RemoteException e) { 3989 Log.e(LOGTAG, "Clipboard failed", e); 3990 } 3991 } 3992 mExtendSelection = false; 3993 } 3994 mShiftIsPressed = false; 3995 invalidate(); // remove selection region and pointer 3996 if (mTouchMode == TOUCH_SELECT_MODE) { 3997 mTouchMode = TOUCH_INIT_MODE; 3998 } 3999 return copiedSomething; 4000 } 4001 4002 @Override 4003 protected void onAttachedToWindow() { 4004 super.onAttachedToWindow(); 4005 if (hasWindowFocus()) setActive(true); 4006 } 4007 4008 @Override 4009 protected void onDetachedFromWindow() { 4010 clearTextEntry(false); 4011 dismissZoomControl(); 4012 if (hasWindowFocus()) setActive(false); 4013 super.onDetachedFromWindow(); 4014 } 4015 4016 @Override 4017 protected void onVisibilityChanged(View changedView, int visibility) { 4018 super.onVisibilityChanged(changedView, visibility); 4019 if (visibility != View.VISIBLE) { 4020 dismissZoomControl(); 4021 } 4022 } 4023 4024 /** 4025 * @deprecated WebView no longer needs to implement 4026 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4027 */ 4028 @Deprecated 4029 public void onChildViewAdded(View parent, View child) {} 4030 4031 /** 4032 * @deprecated WebView no longer needs to implement 4033 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4034 */ 4035 @Deprecated 4036 public void onChildViewRemoved(View p, View child) {} 4037 4038 /** 4039 * @deprecated WebView should not have implemented 4040 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 4041 * does nothing now. 4042 */ 4043 @Deprecated 4044 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4045 } 4046 4047 private void setActive(boolean active) { 4048 if (active) { 4049 if (hasFocus()) { 4050 // If our window regained focus, and we have focus, then begin 4051 // drawing the cursor ring 4052 mDrawCursorRing = true; 4053 if (mNativeClass != 0) { 4054 nativeRecordButtons(true, false, true); 4055 if (inEditingMode()) { 4056 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 4057 } 4058 } 4059 } else { 4060 // If our window gained focus, but we do not have it, do not 4061 // draw the cursor ring. 4062 mDrawCursorRing = false; 4063 // We do not call nativeRecordButtons here because we assume 4064 // that when we lost focus, or window focus, it got called with 4065 // false for the first parameter 4066 } 4067 } else { 4068 if (mWebViewCore != null && getSettings().getBuiltInZoomControls() 4069 && (mZoomButtonsController == null || 4070 !mZoomButtonsController.isVisible())) { 4071 /* 4072 * The zoom controls come in their own window, so our window 4073 * loses focus. Our policy is to not draw the cursor ring if 4074 * our window is not focused, but this is an exception since 4075 * the user can still navigate the web page with the zoom 4076 * controls showing. 4077 */ 4078 // If our window has lost focus, stop drawing the cursor ring 4079 mDrawCursorRing = false; 4080 } 4081 mGotKeyDown = false; 4082 mShiftIsPressed = false; 4083 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4084 mTouchMode = TOUCH_DONE_MODE; 4085 if (mNativeClass != 0) { 4086 nativeRecordButtons(false, false, true); 4087 } 4088 setFocusControllerInactive(); 4089 } 4090 invalidate(); 4091 } 4092 4093 // To avoid drawing the cursor ring, and remove the TextView when our window 4094 // loses focus. 4095 @Override 4096 public void onWindowFocusChanged(boolean hasWindowFocus) { 4097 setActive(hasWindowFocus); 4098 if (hasWindowFocus) { 4099 BrowserFrame.sJavaBridge.setActiveWebView(this); 4100 } else { 4101 BrowserFrame.sJavaBridge.removeActiveWebView(this); 4102 } 4103 super.onWindowFocusChanged(hasWindowFocus); 4104 } 4105 4106 /* 4107 * Pass a message to WebCore Thread, telling the WebCore::Page's 4108 * FocusController to be "inactive" so that it will 4109 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4110 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4111 */ 4112 /* package */ void setFocusControllerInactive() { 4113 // Do not need to also check whether mWebViewCore is null, because 4114 // mNativeClass is only set if mWebViewCore is non null 4115 if (mNativeClass == 0) return; 4116 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 4117 } 4118 4119 @Override 4120 protected void onFocusChanged(boolean focused, int direction, 4121 Rect previouslyFocusedRect) { 4122 if (DebugFlags.WEB_VIEW) { 4123 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4124 } 4125 if (focused) { 4126 // When we regain focus, if we have window focus, resume drawing 4127 // the cursor ring 4128 if (hasWindowFocus()) { 4129 mDrawCursorRing = true; 4130 if (mNativeClass != 0) { 4131 nativeRecordButtons(true, false, true); 4132 } 4133 //} else { 4134 // The WebView has gained focus while we do not have 4135 // windowfocus. When our window lost focus, we should have 4136 // called nativeRecordButtons(false...) 4137 } 4138 } else { 4139 // When we lost focus, unless focus went to the TextView (which is 4140 // true if we are in editing mode), stop drawing the cursor ring. 4141 if (!inEditingMode()) { 4142 mDrawCursorRing = false; 4143 if (mNativeClass != 0) { 4144 nativeRecordButtons(false, false, true); 4145 } 4146 setFocusControllerInactive(); 4147 } 4148 mGotKeyDown = false; 4149 } 4150 4151 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4152 } 4153 4154 /** 4155 * @hide 4156 */ 4157 @Override 4158 protected boolean setFrame(int left, int top, int right, int bottom) { 4159 boolean changed = super.setFrame(left, top, right, bottom); 4160 if (!changed && mHeightCanMeasure) { 4161 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4162 // in WebViewCore after we get the first layout. We do call 4163 // requestLayout() when we get contentSizeChanged(). But the View 4164 // system won't call onSizeChanged if the dimension is not changed. 4165 // In this case, we need to call sendViewSizeZoom() explicitly to 4166 // notify the WebKit about the new dimensions. 4167 sendViewSizeZoom(); 4168 } 4169 return changed; 4170 } 4171 4172 private static class PostScale implements Runnable { 4173 final WebView mWebView; 4174 final boolean mUpdateTextWrap; 4175 4176 public PostScale(WebView webView, boolean updateTextWrap) { 4177 mWebView = webView; 4178 mUpdateTextWrap = updateTextWrap; 4179 } 4180 4181 public void run() { 4182 if (mWebView.mWebViewCore != null) { 4183 // we always force, in case our height changed, in which case we 4184 // still want to send the notification over to webkit. 4185 mWebView.setNewZoomScale(mWebView.mActualScale, 4186 mUpdateTextWrap, true); 4187 // update the zoom buttons as the scale can be changed 4188 if (mWebView.getSettings().getBuiltInZoomControls()) { 4189 mWebView.updateZoomButtonsEnabled(); 4190 } 4191 } 4192 } 4193 } 4194 4195 @Override 4196 protected void onSizeChanged(int w, int h, int ow, int oh) { 4197 super.onSizeChanged(w, h, ow, oh); 4198 // Center zooming to the center of the screen. 4199 if (mZoomScale == 0) { // unless we're already zooming 4200 // To anchor at top left corner. 4201 mZoomCenterX = 0; 4202 mZoomCenterY = getVisibleTitleHeight(); 4203 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4204 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4205 } 4206 4207 // adjust the max viewport width depending on the view dimensions. This 4208 // is to ensure the scaling is not going insane. So do not shrink it if 4209 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4210 int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE); 4211 if (newMaxViewportWidth > sMaxViewportWidth) { 4212 sMaxViewportWidth = newMaxViewportWidth; 4213 } 4214 4215 // update mMinZoomScale if the minimum zoom scale is not fixed 4216 if (!mMinZoomScaleFixed) { 4217 // when change from narrow screen to wide screen, the new viewWidth 4218 // can be wider than the old content width. We limit the minimum 4219 // scale to 1.0f. The proper minimum scale will be calculated when 4220 // the new picture shows up. 4221 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 4222 / (mDrawHistory ? mHistoryPicture.getWidth() 4223 : mZoomOverviewWidth)); 4224 if (mInitialScaleInPercent > 0) { 4225 // limit the minZoomScale to the initialScale if it is set 4226 float initialScale = mInitialScaleInPercent / 100.0f; 4227 if (mMinZoomScale > initialScale) { 4228 mMinZoomScale = initialScale; 4229 } 4230 } 4231 } 4232 4233 dismissZoomControl(); 4234 4235 // onSizeChanged() is called during WebView layout. And any 4236 // requestLayout() is blocked during layout. As setNewZoomScale() will 4237 // call its child View to reposition itself through ViewManager's 4238 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 4239 // <b/> 4240 // only update the text wrap scale if width changed. 4241 post(new PostScale(this, w != ow)); 4242 } 4243 4244 @Override 4245 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4246 super.onScrollChanged(l, t, oldl, oldt); 4247 sendOurVisibleRect(); 4248 // update WebKit if visible title bar height changed. The logic is same 4249 // as getVisibleTitleHeight. 4250 int titleHeight = getTitleHeight(); 4251 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4252 sendViewSizeZoom(); 4253 } 4254 } 4255 4256 @Override 4257 public boolean dispatchKeyEvent(KeyEvent event) { 4258 boolean dispatch = true; 4259 4260 // Textfields, plugins, and contentEditable nodes need to receive the 4261 // shift up key even if another key was released while the shift key 4262 // was held down. 4263 if (!inEditingMode() && (mNativeClass == 0 4264 || !nativePageShouldHandleShiftAndArrows())) { 4265 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4266 mGotKeyDown = true; 4267 } else { 4268 if (!mGotKeyDown) { 4269 /* 4270 * We got a key up for which we were not the recipient of 4271 * the original key down. Don't give it to the view. 4272 */ 4273 dispatch = false; 4274 } 4275 mGotKeyDown = false; 4276 } 4277 } 4278 4279 if (dispatch) { 4280 return super.dispatchKeyEvent(event); 4281 } else { 4282 // We didn't dispatch, so let something else handle the key 4283 return false; 4284 } 4285 } 4286 4287 // Here are the snap align logic: 4288 // 1. If it starts nearly horizontally or vertically, snap align; 4289 // 2. If there is a dramitic direction change, let it go; 4290 // 3. If there is a same direction back and forth, lock it. 4291 4292 // adjustable parameters 4293 private int mMinLockSnapReverseDistance; 4294 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4295 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4296 4297 private static int sign(float x) { 4298 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4299 } 4300 4301 // if the page can scroll <= this value, we won't allow the drag tracker 4302 // to have any effect. 4303 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4304 4305 private class DragTrackerHandler { 4306 private final DragTracker mProxy; 4307 private final float mStartY, mStartX; 4308 private final float mMinDY, mMinDX; 4309 private final float mMaxDY, mMaxDX; 4310 private float mCurrStretchY, mCurrStretchX; 4311 private int mSX, mSY; 4312 private Interpolator mInterp; 4313 private float[] mXY = new float[2]; 4314 4315 // inner (non-state) classes can't have enums :( 4316 private static final int DRAGGING_STATE = 0; 4317 private static final int ANIMATING_STATE = 1; 4318 private static final int FINISHED_STATE = 2; 4319 private int mState; 4320 4321 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4322 mProxy = proxy; 4323 4324 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4325 int viewTop = getScrollY(); 4326 int viewBottom = viewTop + getHeight(); 4327 4328 mStartY = y; 4329 mMinDY = -viewTop; 4330 mMaxDY = docBottom - viewBottom; 4331 4332 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4333 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4334 " up/down= " + mMinDY + " " + mMaxDY); 4335 } 4336 4337 int docRight = computeHorizontalScrollRange(); 4338 int viewLeft = getScrollX(); 4339 int viewRight = viewLeft + getWidth(); 4340 mStartX = x; 4341 mMinDX = -viewLeft; 4342 mMaxDX = docRight - viewRight; 4343 4344 mState = DRAGGING_STATE; 4345 mProxy.onStartDrag(x, y); 4346 4347 // ensure we buildBitmap at least once 4348 mSX = -99999; 4349 } 4350 4351 private float computeStretch(float delta, float min, float max) { 4352 float stretch = 0; 4353 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4354 if (delta < min) { 4355 stretch = delta - min; 4356 } else if (delta > max) { 4357 stretch = delta - max; 4358 } 4359 } 4360 return stretch; 4361 } 4362 4363 public void dragTo(float x, float y) { 4364 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4365 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4366 4367 if ((mSnapScrollMode & SNAP_X) != 0) { 4368 sy = 0; 4369 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4370 sx = 0; 4371 } 4372 4373 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4374 mCurrStretchX = sx; 4375 mCurrStretchY = sy; 4376 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4377 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4378 " " + sy); 4379 } 4380 if (mProxy.onStretchChange(sx, sy)) { 4381 invalidate(); 4382 } 4383 } 4384 } 4385 4386 public void stopDrag() { 4387 final int DURATION = 200; 4388 int now = (int)SystemClock.uptimeMillis(); 4389 mInterp = new Interpolator(2); 4390 mXY[0] = mCurrStretchX; 4391 mXY[1] = mCurrStretchY; 4392 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4393 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4394 mInterp.setKeyFrame(0, now, mXY, blend); 4395 float[] zerozero = new float[] { 0, 0 }; 4396 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4397 mState = ANIMATING_STATE; 4398 4399 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4400 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4401 } 4402 } 4403 4404 // Call this after each draw. If it ruturns null, the tracker is done 4405 public boolean isFinished() { 4406 return mState == FINISHED_STATE; 4407 } 4408 4409 private int hiddenHeightOfTitleBar() { 4410 return getTitleHeight() - getVisibleTitleHeight(); 4411 } 4412 4413 // need a way to know if 565 or 8888 is the right config for 4414 // capturing the display and giving it to the drag proxy 4415 private Bitmap.Config offscreenBitmapConfig() { 4416 // hard code 565 for now 4417 return Bitmap.Config.RGB_565; 4418 } 4419 4420 /* If the tracker draws, then this returns true, otherwise it will 4421 return false, and draw nothing. 4422 */ 4423 public boolean draw(Canvas canvas) { 4424 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4425 int sx = getScrollX(); 4426 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4427 if (mSX != sx || mSY != sy) { 4428 buildBitmap(sx, sy); 4429 mSX = sx; 4430 mSY = sy; 4431 } 4432 4433 if (mState == ANIMATING_STATE) { 4434 Interpolator.Result result = mInterp.timeToValues(mXY); 4435 if (result == Interpolator.Result.FREEZE_END) { 4436 mState = FINISHED_STATE; 4437 return false; 4438 } else { 4439 mProxy.onStretchChange(mXY[0], mXY[1]); 4440 invalidate(); 4441 // fall through to the draw 4442 } 4443 } 4444 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4445 canvas.translate(sx, sy); 4446 mProxy.onDraw(canvas); 4447 canvas.restoreToCount(count); 4448 return true; 4449 } 4450 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4451 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4452 mCurrStretchX + " " + mCurrStretchY); 4453 } 4454 return false; 4455 } 4456 4457 private void buildBitmap(int sx, int sy) { 4458 int w = getWidth(); 4459 int h = getViewHeight(); 4460 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4461 Canvas canvas = new Canvas(bm); 4462 canvas.translate(-sx, -sy); 4463 drawContent(canvas); 4464 4465 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4466 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4467 " " + sy + " " + w + " " + h); 4468 } 4469 mProxy.onBitmapChange(bm); 4470 } 4471 } 4472 4473 /** @hide */ 4474 public static class DragTracker { 4475 public void onStartDrag(float x, float y) {} 4476 public boolean onStretchChange(float sx, float sy) { 4477 // return true to have us inval the view 4478 return false; 4479 } 4480 public void onStopDrag() {} 4481 public void onBitmapChange(Bitmap bm) {} 4482 public void onDraw(Canvas canvas) {} 4483 } 4484 4485 /** @hide */ 4486 public DragTracker getDragTracker() { 4487 return mDragTracker; 4488 } 4489 4490 /** @hide */ 4491 public void setDragTracker(DragTracker tracker) { 4492 mDragTracker = tracker; 4493 } 4494 4495 private DragTracker mDragTracker; 4496 private DragTrackerHandler mDragTrackerHandler; 4497 4498 private class ScaleDetectorListener implements 4499 ScaleGestureDetector.OnScaleGestureListener { 4500 4501 public boolean onScaleBegin(ScaleGestureDetector detector) { 4502 // cancel the single touch handling 4503 cancelTouch(); 4504 dismissZoomControl(); 4505 // reset the zoom overview mode so that the page won't auto grow 4506 mInZoomOverview = false; 4507 // If it is in password mode, turn it off so it does not draw 4508 // misplaced. 4509 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4510 mWebTextView.setInPassword(false); 4511 } 4512 4513 mViewManager.startZoom(); 4514 4515 return true; 4516 } 4517 4518 public void onScaleEnd(ScaleGestureDetector detector) { 4519 if (mPreviewZoomOnly) { 4520 mPreviewZoomOnly = false; 4521 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4522 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4523 // don't reflow when zoom in; when zoom out, do reflow if the 4524 // new scale is almost minimum scale; 4525 boolean reflowNow = (mActualScale - mMinZoomScale 4526 <= MINIMUM_SCALE_INCREMENT) 4527 || ((mActualScale <= 0.8 * mTextWrapScale)); 4528 // force zoom after mPreviewZoomOnly is set to false so that the 4529 // new view size will be passed to the WebKit 4530 setNewZoomScale(mActualScale, reflowNow, true); 4531 // call invalidate() to draw without zoom filter 4532 invalidate(); 4533 } 4534 // adjust the edit text view if needed 4535 if (inEditingMode() && didUpdateTextViewBounds(false) 4536 && nativeFocusCandidateIsPassword()) { 4537 // If it is a password field, start drawing the 4538 // WebTextView once again. 4539 mWebTextView.setInPassword(true); 4540 } 4541 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4542 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4543 // may trigger the unwanted fling. 4544 mTouchMode = TOUCH_PINCH_DRAG; 4545 mConfirmMove = true; 4546 startTouch(detector.getFocusX(), detector.getFocusY(), 4547 mLastTouchTime); 4548 4549 mViewManager.endZoom(); 4550 } 4551 4552 public boolean onScale(ScaleGestureDetector detector) { 4553 float scale = (float) (Math.round(detector.getScaleFactor() 4554 * mActualScale * 100) / 100.0); 4555 if (Math.abs(scale - mActualScale) >= MINIMUM_SCALE_INCREMENT) { 4556 mPreviewZoomOnly = true; 4557 // limit the scale change per step 4558 if (scale > mActualScale) { 4559 scale = Math.min(scale, mActualScale * 1.25f); 4560 } else { 4561 scale = Math.max(scale, mActualScale * 0.8f); 4562 } 4563 mZoomCenterX = detector.getFocusX(); 4564 mZoomCenterY = detector.getFocusY(); 4565 setNewZoomScale(scale, false, false); 4566 invalidate(); 4567 return true; 4568 } 4569 return false; 4570 } 4571 } 4572 4573 private boolean hitFocusedPlugin(int contentX, int contentY) { 4574 if (DebugFlags.WEB_VIEW) { 4575 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 4576 Rect r = nativeFocusNodeBounds(); 4577 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 4578 + ", " + r.right + ", " + r.bottom + ")"); 4579 } 4580 return nativeFocusIsPlugin() 4581 && nativeFocusNodeBounds().contains(contentX, contentY); 4582 } 4583 4584 private boolean shouldForwardTouchEvent() { 4585 return mFullScreenHolder != null || (mForwardTouchEvents 4586 && mTouchMode != TOUCH_SELECT_MODE 4587 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 4588 } 4589 4590 private boolean inFullScreenMode() { 4591 return mFullScreenHolder != null; 4592 } 4593 4594 @Override 4595 public boolean onTouchEvent(MotionEvent ev) { 4596 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4597 return false; 4598 } 4599 4600 if (DebugFlags.WEB_VIEW) { 4601 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4602 + mTouchMode); 4603 } 4604 4605 int action; 4606 float x, y; 4607 long eventTime = ev.getEventTime(); 4608 4609 // FIXME: we may consider to give WebKit an option to handle multi-touch 4610 // events later. 4611 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 4612 if (mMinZoomScale < mMaxZoomScale) { 4613 mScaleDetector.onTouchEvent(ev); 4614 if (mScaleDetector.isInProgress()) { 4615 mLastTouchTime = eventTime; 4616 return true; 4617 } 4618 x = mScaleDetector.getFocusX(); 4619 y = mScaleDetector.getFocusY(); 4620 action = ev.getAction() & MotionEvent.ACTION_MASK; 4621 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4622 cancelTouch(); 4623 action = MotionEvent.ACTION_DOWN; 4624 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4625 // set mLastTouchX/Y to the remaining point 4626 mLastTouchX = x; 4627 mLastTouchY = y; 4628 } else if (action == MotionEvent.ACTION_MOVE) { 4629 // negative x or y indicate it is on the edge, skip it. 4630 if (x < 0 || y < 0) { 4631 return true; 4632 } 4633 } 4634 } else { 4635 // if the page disallow zoom, skip multi-pointer action 4636 return true; 4637 } 4638 } else { 4639 action = ev.getAction(); 4640 x = ev.getX(); 4641 y = ev.getY(); 4642 } 4643 4644 // Due to the touch screen edge effect, a touch closer to the edge 4645 // always snapped to the edge. As getViewWidth() can be different from 4646 // getWidth() due to the scrollbar, adjusting the point to match 4647 // getViewWidth(). Same applied to the height. 4648 if (x > getViewWidth() - 1) { 4649 x = getViewWidth() - 1; 4650 } 4651 if (y > getViewHeightWithTitle() - 1) { 4652 y = getViewHeightWithTitle() - 1; 4653 } 4654 4655 float fDeltaX = mLastTouchX - x; 4656 float fDeltaY = mLastTouchY - y; 4657 int deltaX = (int) fDeltaX; 4658 int deltaY = (int) fDeltaY; 4659 int contentX = viewToContentX((int) x + mScrollX); 4660 int contentY = viewToContentY((int) y + mScrollY); 4661 4662 switch (action) { 4663 case MotionEvent.ACTION_DOWN: { 4664 mPreventDefault = PREVENT_DEFAULT_NO; 4665 mConfirmMove = false; 4666 if (!mScroller.isFinished()) { 4667 // stop the current scroll animation, but if this is 4668 // the start of a fling, allow it to add to the current 4669 // fling's velocity 4670 mScroller.abortAnimation(); 4671 mTouchMode = TOUCH_DRAG_START_MODE; 4672 mConfirmMove = true; 4673 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 4674 } else if (!inFullScreenMode() && mShiftIsPressed) { 4675 mSelectX = mScrollX + (int) x; 4676 mSelectY = mScrollY + (int) y; 4677 mTouchMode = TOUCH_SELECT_MODE; 4678 if (DebugFlags.WEB_VIEW) { 4679 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 4680 } 4681 nativeMoveSelection(contentX, contentY, false); 4682 mTouchSelection = mExtendSelection = true; 4683 invalidate(); // draw the i-beam instead of the arrow 4684 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4685 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4686 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4687 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4688 } else { 4689 // commit the short press action for the previous tap 4690 doShortPress(); 4691 mTouchMode = TOUCH_INIT_MODE; 4692 mDeferTouchProcess = (!inFullScreenMode() 4693 && mForwardTouchEvents) ? hitFocusedPlugin( 4694 contentX, contentY) : false; 4695 } 4696 } else { // the normal case 4697 mPreviewZoomOnly = false; 4698 mTouchMode = TOUCH_INIT_MODE; 4699 mDeferTouchProcess = (!inFullScreenMode() 4700 && mForwardTouchEvents) ? hitFocusedPlugin( 4701 contentX, contentY) : false; 4702 mWebViewCore.sendMessage( 4703 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4704 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4705 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 4706 (eventTime - mLastTouchUpTime), eventTime); 4707 } 4708 } 4709 // Trigger the link 4710 if (mTouchMode == TOUCH_INIT_MODE 4711 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4712 mPrivateHandler.sendEmptyMessageDelayed( 4713 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 4714 mPrivateHandler.sendEmptyMessageDelayed( 4715 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 4716 if (inFullScreenMode() || mDeferTouchProcess) { 4717 mPreventDefault = PREVENT_DEFAULT_YES; 4718 } else if (mForwardTouchEvents) { 4719 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 4720 } else { 4721 mPreventDefault = PREVENT_DEFAULT_NO; 4722 } 4723 // pass the touch events from UI thread to WebCore thread 4724 if (shouldForwardTouchEvent()) { 4725 TouchEventData ted = new TouchEventData(); 4726 ted.mAction = action; 4727 ted.mX = contentX; 4728 ted.mY = contentY; 4729 ted.mMetaState = ev.getMetaState(); 4730 ted.mReprocess = mDeferTouchProcess; 4731 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4732 if (mDeferTouchProcess) { 4733 // still needs to set them for compute deltaX/Y 4734 mLastTouchX = x; 4735 mLastTouchY = y; 4736 break; 4737 } 4738 if (!inFullScreenMode()) { 4739 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4740 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4741 action, 0), TAP_TIMEOUT); 4742 } 4743 } 4744 } 4745 startTouch(x, y, eventTime); 4746 break; 4747 } 4748 case MotionEvent.ACTION_MOVE: { 4749 boolean firstMove = false; 4750 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 4751 >= mTouchSlopSquare) { 4752 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4753 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4754 mConfirmMove = true; 4755 firstMove = true; 4756 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4757 mTouchMode = TOUCH_INIT_MODE; 4758 } 4759 } 4760 // pass the touch events from UI thread to WebCore thread 4761 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 4762 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 4763 TouchEventData ted = new TouchEventData(); 4764 ted.mAction = action; 4765 ted.mX = contentX; 4766 ted.mY = contentY; 4767 ted.mMetaState = ev.getMetaState(); 4768 ted.mReprocess = mDeferTouchProcess; 4769 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4770 mLastSentTouchTime = eventTime; 4771 if (mDeferTouchProcess) { 4772 break; 4773 } 4774 if (firstMove && !inFullScreenMode()) { 4775 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4776 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4777 action, 0), TAP_TIMEOUT); 4778 } 4779 } 4780 if (mTouchMode == TOUCH_DONE_MODE 4781 || mPreventDefault == PREVENT_DEFAULT_YES) { 4782 // no dragging during scroll zoom animation, or when prevent 4783 // default is yes 4784 break; 4785 } 4786 if (mVelocityTracker == null) { 4787 Log.e(LOGTAG, "Got null mVelocityTracker when " 4788 + "mPreventDefault = " + mPreventDefault 4789 + " mDeferTouchProcess = " + mDeferTouchProcess 4790 + " mTouchMode = " + mTouchMode); 4791 } 4792 mVelocityTracker.addMovement(ev); 4793 if (mTouchMode != TOUCH_DRAG_MODE) { 4794 if (mTouchMode == TOUCH_SELECT_MODE) { 4795 mSelectX = mScrollX + (int) x; 4796 mSelectY = mScrollY + (int) y; 4797 if (DebugFlags.WEB_VIEW) { 4798 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 4799 } 4800 nativeMoveSelection(contentX, contentY, true); 4801 invalidate(); 4802 break; 4803 } 4804 4805 if (!mConfirmMove) { 4806 break; 4807 } 4808 4809 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 4810 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 4811 // track mLastTouchTime as we may need to do fling at 4812 // ACTION_UP 4813 mLastTouchTime = eventTime; 4814 break; 4815 } 4816 // if it starts nearly horizontal or vertical, enforce it 4817 int ax = Math.abs(deltaX); 4818 int ay = Math.abs(deltaY); 4819 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4820 mSnapScrollMode = SNAP_X; 4821 mSnapPositive = deltaX > 0; 4822 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4823 mSnapScrollMode = SNAP_Y; 4824 mSnapPositive = deltaY > 0; 4825 } 4826 4827 mTouchMode = TOUCH_DRAG_MODE; 4828 mLastTouchX = x; 4829 mLastTouchY = y; 4830 fDeltaX = 0.0f; 4831 fDeltaY = 0.0f; 4832 deltaX = 0; 4833 deltaY = 0; 4834 4835 startDrag(); 4836 } 4837 4838 if (mDragTrackerHandler != null) { 4839 mDragTrackerHandler.dragTo(x, y); 4840 } 4841 4842 // do pan 4843 int newScrollX = pinLocX(mScrollX + deltaX); 4844 int newDeltaX = newScrollX - mScrollX; 4845 if (deltaX != newDeltaX) { 4846 deltaX = newDeltaX; 4847 fDeltaX = (float) newDeltaX; 4848 } 4849 int newScrollY = pinLocY(mScrollY + deltaY); 4850 int newDeltaY = newScrollY - mScrollY; 4851 if (deltaY != newDeltaY) { 4852 deltaY = newDeltaY; 4853 fDeltaY = (float) newDeltaY; 4854 } 4855 boolean done = false; 4856 boolean keepScrollBarsVisible = false; 4857 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 4858 mLastTouchX = x; 4859 mLastTouchY = y; 4860 keepScrollBarsVisible = done = true; 4861 } else { 4862 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4863 int ax = Math.abs(deltaX); 4864 int ay = Math.abs(deltaY); 4865 if (mSnapScrollMode == SNAP_X) { 4866 // radical change means getting out of snap mode 4867 if (ay > MAX_SLOPE_FOR_DIAG * ax 4868 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4869 mSnapScrollMode = SNAP_NONE; 4870 } 4871 // reverse direction means lock in the snap mode 4872 if (ax > MAX_SLOPE_FOR_DIAG * ay && 4873 (mSnapPositive 4874 ? deltaX < -mMinLockSnapReverseDistance 4875 : deltaX > mMinLockSnapReverseDistance)) { 4876 mSnapScrollMode |= SNAP_LOCK; 4877 } 4878 } else { 4879 // radical change means getting out of snap mode 4880 if (ax > MAX_SLOPE_FOR_DIAG * ay 4881 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4882 mSnapScrollMode = SNAP_NONE; 4883 } 4884 // reverse direction means lock in the snap mode 4885 if (ay > MAX_SLOPE_FOR_DIAG * ax && 4886 (mSnapPositive 4887 ? deltaY < -mMinLockSnapReverseDistance 4888 : deltaY > mMinLockSnapReverseDistance)) { 4889 mSnapScrollMode |= SNAP_LOCK; 4890 } 4891 } 4892 } 4893 if (mSnapScrollMode != SNAP_NONE) { 4894 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 4895 deltaY = 0; 4896 } else { 4897 deltaX = 0; 4898 } 4899 } 4900 if ((deltaX | deltaY) != 0) { 4901 if (deltaX != 0) { 4902 mLastTouchX = x; 4903 } 4904 if (deltaY != 0) { 4905 mLastTouchY = y; 4906 } 4907 mHeldMotionless = MOTIONLESS_FALSE; 4908 } else { 4909 // keep the scrollbar on the screen even there is no 4910 // scroll 4911 mLastTouchX = x; 4912 mLastTouchY = y; 4913 keepScrollBarsVisible = true; 4914 } 4915 mLastTouchTime = eventTime; 4916 mUserScroll = true; 4917 } 4918 4919 doDrag(deltaX, deltaY); 4920 4921 if (keepScrollBarsVisible) { 4922 if (mHeldMotionless != MOTIONLESS_TRUE) { 4923 mHeldMotionless = MOTIONLESS_TRUE; 4924 invalidate(); 4925 } 4926 // keep the scrollbar on the screen even there is no scroll 4927 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 4928 false); 4929 // return false to indicate that we can't pan out of the 4930 // view space 4931 return !done; 4932 } 4933 break; 4934 } 4935 case MotionEvent.ACTION_UP: { 4936 if (!isFocused()) requestFocus(); 4937 // pass the touch events from UI thread to WebCore thread 4938 if (shouldForwardTouchEvent()) { 4939 TouchEventData ted = new TouchEventData(); 4940 ted.mAction = action; 4941 ted.mX = contentX; 4942 ted.mY = contentY; 4943 ted.mMetaState = ev.getMetaState(); 4944 ted.mReprocess = mDeferTouchProcess; 4945 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4946 } 4947 mLastTouchUpTime = eventTime; 4948 switch (mTouchMode) { 4949 case TOUCH_DOUBLE_TAP_MODE: // double tap 4950 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4951 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4952 if (inFullScreenMode() || mDeferTouchProcess) { 4953 TouchEventData ted = new TouchEventData(); 4954 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 4955 ted.mX = contentX; 4956 ted.mY = contentY; 4957 ted.mMetaState = ev.getMetaState(); 4958 ted.mReprocess = mDeferTouchProcess; 4959 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4960 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 4961 doDoubleTap(); 4962 mTouchMode = TOUCH_DONE_MODE; 4963 } 4964 break; 4965 case TOUCH_SELECT_MODE: 4966 commitCopy(); 4967 mTouchSelection = false; 4968 break; 4969 case TOUCH_INIT_MODE: // tap 4970 case TOUCH_SHORTPRESS_START_MODE: 4971 case TOUCH_SHORTPRESS_MODE: 4972 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4973 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4974 if (mConfirmMove) { 4975 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 4976 " WebCore's response for touch down."); 4977 if (mPreventDefault != PREVENT_DEFAULT_YES 4978 && (computeMaxScrollX() > 0 4979 || computeMaxScrollY() > 0)) { 4980 // If the user has performed a very quick touch 4981 // sequence it is possible that we may get here 4982 // before WebCore has had a chance to process the events. 4983 // In this case, any call to preventDefault in the 4984 // JS touch handler will not have been executed yet. 4985 // Hence we will see both the UI (now) and WebCore 4986 // (when context switches) handling the event, 4987 // regardless of whether the web developer actually 4988 // doeses preventDefault in their touch handler. This 4989 // is the nature of our asynchronous touch model. 4990 4991 // we will not rewrite drag code here, but we 4992 // will try fling if it applies. 4993 WebViewCore.reducePriority(); 4994 // to get better performance, pause updating the 4995 // picture 4996 WebViewCore.pauseUpdatePicture(mWebViewCore); 4997 // fall through to TOUCH_DRAG_MODE 4998 } else { 4999 // WebKit may consume the touch event and modify 5000 // DOM. drawContentPicture() will be called with 5001 // animateSroll as true for better performance. 5002 // Force redraw in high-quality. 5003 invalidate(); 5004 break; 5005 } 5006 } else { 5007 if (mTouchMode == TOUCH_INIT_MODE) { 5008 mPrivateHandler.sendEmptyMessageDelayed( 5009 RELEASE_SINGLE_TAP, ViewConfiguration 5010 .getDoubleTapTimeout()); 5011 } else { 5012 doShortPress(); 5013 } 5014 break; 5015 } 5016 case TOUCH_DRAG_MODE: 5017 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5018 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5019 // if the user waits a while w/o moving before the 5020 // up, we don't want to do a fling 5021 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5022 if (mVelocityTracker == null) { 5023 Log.e(LOGTAG, "Got null mVelocityTracker when " 5024 + "mPreventDefault = " 5025 + mPreventDefault 5026 + " mDeferTouchProcess = " 5027 + mDeferTouchProcess); 5028 } 5029 mVelocityTracker.addMovement(ev); 5030 // set to MOTIONLESS_IGNORE so that it won't keep 5031 // removing and sending message in 5032 // drawCoreAndCursorRing() 5033 mHeldMotionless = MOTIONLESS_IGNORE; 5034 doFling(); 5035 break; 5036 } 5037 // redraw in high-quality, as we're done dragging 5038 mHeldMotionless = MOTIONLESS_TRUE; 5039 invalidate(); 5040 // fall through 5041 case TOUCH_DRAG_START_MODE: 5042 // TOUCH_DRAG_START_MODE should not happen for the real 5043 // device as we almost certain will get a MOVE. But this 5044 // is possible on emulator. 5045 mLastVelocity = 0; 5046 WebViewCore.resumePriority(); 5047 WebViewCore.resumeUpdatePicture(mWebViewCore); 5048 break; 5049 } 5050 stopTouch(); 5051 break; 5052 } 5053 case MotionEvent.ACTION_CANCEL: { 5054 if (mTouchMode == TOUCH_DRAG_MODE) { 5055 invalidate(); 5056 } 5057 cancelWebCoreTouchEvent(contentX, contentY, false); 5058 cancelTouch(); 5059 break; 5060 } 5061 } 5062 return true; 5063 } 5064 5065 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5066 if (shouldForwardTouchEvent()) { 5067 if (removeEvents) { 5068 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5069 } 5070 TouchEventData ted = new TouchEventData(); 5071 ted.mX = x; 5072 ted.mY = y; 5073 ted.mAction = MotionEvent.ACTION_CANCEL; 5074 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5075 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5076 } 5077 } 5078 5079 private void startTouch(float x, float y, long eventTime) { 5080 // Remember where the motion event started 5081 mLastTouchX = x; 5082 mLastTouchY = y; 5083 mLastTouchTime = eventTime; 5084 mVelocityTracker = VelocityTracker.obtain(); 5085 mSnapScrollMode = SNAP_NONE; 5086 if (mDragTracker != null) { 5087 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 5088 } 5089 } 5090 5091 private void startDrag() { 5092 WebViewCore.reducePriority(); 5093 // to get better performance, pause updating the picture 5094 WebViewCore.pauseUpdatePicture(mWebViewCore); 5095 if (!mDragFromTextInput) { 5096 nativeHideCursor(); 5097 } 5098 WebSettings settings = getSettings(); 5099 if (settings.supportZoom() 5100 && settings.getBuiltInZoomControls() 5101 && !getZoomButtonsController().isVisible() 5102 && mMinZoomScale < mMaxZoomScale 5103 && (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5104 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF)) { 5105 mZoomButtonsController.setVisible(true); 5106 int count = settings.getDoubleTapToastCount(); 5107 if (mInZoomOverview && count > 0) { 5108 settings.setDoubleTapToastCount(--count); 5109 Toast.makeText(mContext, 5110 com.android.internal.R.string.double_tap_toast, 5111 Toast.LENGTH_LONG).show(); 5112 } 5113 } 5114 } 5115 5116 private void doDrag(int deltaX, int deltaY) { 5117 if ((deltaX | deltaY) != 0) { 5118 scrollBy(deltaX, deltaY); 5119 } 5120 if (!getSettings().getBuiltInZoomControls()) { 5121 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 5122 if (mZoomControls != null && showPlusMinus) { 5123 if (mZoomControls.getVisibility() == View.VISIBLE) { 5124 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5125 } else { 5126 mZoomControls.show(showPlusMinus, false); 5127 } 5128 mPrivateHandler.postDelayed(mZoomControlRunnable, 5129 ZOOM_CONTROLS_TIMEOUT); 5130 } 5131 } 5132 } 5133 5134 private void stopTouch() { 5135 if (mDragTrackerHandler != null) { 5136 mDragTrackerHandler.stopDrag(); 5137 } 5138 // we also use mVelocityTracker == null to tell us that we are 5139 // not "moving around", so we can take the slower/prettier 5140 // mode in the drawing code 5141 if (mVelocityTracker != null) { 5142 mVelocityTracker.recycle(); 5143 mVelocityTracker = null; 5144 } 5145 } 5146 5147 private void cancelTouch() { 5148 if (mDragTrackerHandler != null) { 5149 mDragTrackerHandler.stopDrag(); 5150 } 5151 // we also use mVelocityTracker == null to tell us that we are 5152 // not "moving around", so we can take the slower/prettier 5153 // mode in the drawing code 5154 if (mVelocityTracker != null) { 5155 mVelocityTracker.recycle(); 5156 mVelocityTracker = null; 5157 } 5158 if (mTouchMode == TOUCH_DRAG_MODE) { 5159 WebViewCore.resumePriority(); 5160 WebViewCore.resumeUpdatePicture(mWebViewCore); 5161 } 5162 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5163 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5164 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5165 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5166 mHeldMotionless = MOTIONLESS_TRUE; 5167 mTouchMode = TOUCH_DONE_MODE; 5168 nativeHideCursor(); 5169 } 5170 5171 private long mTrackballFirstTime = 0; 5172 private long mTrackballLastTime = 0; 5173 private float mTrackballRemainsX = 0.0f; 5174 private float mTrackballRemainsY = 0.0f; 5175 private int mTrackballXMove = 0; 5176 private int mTrackballYMove = 0; 5177 private boolean mExtendSelection = false; 5178 private boolean mTouchSelection = false; 5179 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5180 private static final int TRACKBALL_TIMEOUT = 200; 5181 private static final int TRACKBALL_WAIT = 100; 5182 private static final int TRACKBALL_SCALE = 400; 5183 private static final int TRACKBALL_SCROLL_COUNT = 5; 5184 private static final int TRACKBALL_MOVE_COUNT = 10; 5185 private static final int TRACKBALL_MULTIPLIER = 3; 5186 private static final int SELECT_CURSOR_OFFSET = 16; 5187 private int mSelectX = 0; 5188 private int mSelectY = 0; 5189 private boolean mFocusSizeChanged = false; 5190 private boolean mShiftIsPressed = false; 5191 private boolean mTrackballDown = false; 5192 private long mTrackballUpTime = 0; 5193 private long mLastCursorTime = 0; 5194 private Rect mLastCursorBounds; 5195 5196 // Set by default; BrowserActivity clears to interpret trackball data 5197 // directly for movement. Currently, the framework only passes 5198 // arrow key events, not trackball events, from one child to the next 5199 private boolean mMapTrackballToArrowKeys = true; 5200 5201 public void setMapTrackballToArrowKeys(boolean setMap) { 5202 mMapTrackballToArrowKeys = setMap; 5203 } 5204 5205 void resetTrackballTime() { 5206 mTrackballLastTime = 0; 5207 } 5208 5209 @Override 5210 public boolean onTrackballEvent(MotionEvent ev) { 5211 long time = ev.getEventTime(); 5212 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5213 if (ev.getY() > 0) pageDown(true); 5214 if (ev.getY() < 0) pageUp(true); 5215 return true; 5216 } 5217 boolean shiftPressed = mShiftIsPressed && (mNativeClass == 0 5218 || !nativePageShouldHandleShiftAndArrows()); 5219 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5220 if (shiftPressed) { 5221 return true; // discard press if copy in progress 5222 } 5223 mTrackballDown = true; 5224 if (mNativeClass == 0) { 5225 return false; 5226 } 5227 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5228 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5229 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5230 nativeSelectBestAt(mLastCursorBounds); 5231 } 5232 if (DebugFlags.WEB_VIEW) { 5233 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5234 + " time=" + time 5235 + " mLastCursorTime=" + mLastCursorTime); 5236 } 5237 if (isInTouchMode()) requestFocusFromTouch(); 5238 return false; // let common code in onKeyDown at it 5239 } 5240 if (ev.getAction() == MotionEvent.ACTION_UP) { 5241 // LONG_PRESS_CENTER is set in common onKeyDown 5242 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5243 mTrackballDown = false; 5244 mTrackballUpTime = time; 5245 if (shiftPressed) { 5246 if (mExtendSelection) { 5247 commitCopy(); 5248 } else { 5249 mExtendSelection = true; 5250 invalidate(); // draw the i-beam instead of the arrow 5251 } 5252 return true; // discard press if copy in progress 5253 } 5254 if (DebugFlags.WEB_VIEW) { 5255 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5256 + " time=" + time 5257 ); 5258 } 5259 return false; // let common code in onKeyUp at it 5260 } 5261 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 5262 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5263 return false; 5264 } 5265 if (mTrackballDown) { 5266 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5267 return true; // discard move if trackball is down 5268 } 5269 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5270 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5271 return true; 5272 } 5273 // TODO: alternatively we can do panning as touch does 5274 switchOutDrawHistory(); 5275 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5276 if (DebugFlags.WEB_VIEW) { 5277 Log.v(LOGTAG, "onTrackballEvent time=" 5278 + time + " last=" + mTrackballLastTime); 5279 } 5280 mTrackballFirstTime = time; 5281 mTrackballXMove = mTrackballYMove = 0; 5282 } 5283 mTrackballLastTime = time; 5284 if (DebugFlags.WEB_VIEW) { 5285 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5286 } 5287 mTrackballRemainsX += ev.getX(); 5288 mTrackballRemainsY += ev.getY(); 5289 doTrackball(time); 5290 return true; 5291 } 5292 5293 void moveSelection(float xRate, float yRate) { 5294 if (mNativeClass == 0) 5295 return; 5296 int width = getViewWidth(); 5297 int height = getViewHeight(); 5298 mSelectX += xRate; 5299 mSelectY += yRate; 5300 int maxX = width + mScrollX; 5301 int maxY = height + mScrollY; 5302 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5303 , mSelectX)); 5304 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5305 , mSelectY)); 5306 if (DebugFlags.WEB_VIEW) { 5307 Log.v(LOGTAG, "moveSelection" 5308 + " mSelectX=" + mSelectX 5309 + " mSelectY=" + mSelectY 5310 + " mScrollX=" + mScrollX 5311 + " mScrollY=" + mScrollY 5312 + " xRate=" + xRate 5313 + " yRate=" + yRate 5314 ); 5315 } 5316 nativeMoveSelection(viewToContentX(mSelectX), 5317 viewToContentY(mSelectY), mExtendSelection); 5318 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5319 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5320 : 0; 5321 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5322 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5323 : 0; 5324 pinScrollBy(scrollX, scrollY, true, 0); 5325 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5326 requestRectangleOnScreen(select); 5327 invalidate(); 5328 } 5329 5330 private int scaleTrackballX(float xRate, int width) { 5331 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5332 int nextXMove = xMove; 5333 if (xMove > 0) { 5334 if (xMove > mTrackballXMove) { 5335 xMove -= mTrackballXMove; 5336 } 5337 } else if (xMove < mTrackballXMove) { 5338 xMove -= mTrackballXMove; 5339 } 5340 mTrackballXMove = nextXMove; 5341 return xMove; 5342 } 5343 5344 private int scaleTrackballY(float yRate, int height) { 5345 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5346 int nextYMove = yMove; 5347 if (yMove > 0) { 5348 if (yMove > mTrackballYMove) { 5349 yMove -= mTrackballYMove; 5350 } 5351 } else if (yMove < mTrackballYMove) { 5352 yMove -= mTrackballYMove; 5353 } 5354 mTrackballYMove = nextYMove; 5355 return yMove; 5356 } 5357 5358 private int keyCodeToSoundsEffect(int keyCode) { 5359 switch(keyCode) { 5360 case KeyEvent.KEYCODE_DPAD_UP: 5361 return SoundEffectConstants.NAVIGATION_UP; 5362 case KeyEvent.KEYCODE_DPAD_RIGHT: 5363 return SoundEffectConstants.NAVIGATION_RIGHT; 5364 case KeyEvent.KEYCODE_DPAD_DOWN: 5365 return SoundEffectConstants.NAVIGATION_DOWN; 5366 case KeyEvent.KEYCODE_DPAD_LEFT: 5367 return SoundEffectConstants.NAVIGATION_LEFT; 5368 } 5369 throw new IllegalArgumentException("keyCode must be one of " + 5370 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5371 "KEYCODE_DPAD_LEFT}."); 5372 } 5373 5374 private void doTrackball(long time) { 5375 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5376 if (elapsed == 0) { 5377 elapsed = TRACKBALL_TIMEOUT; 5378 } 5379 float xRate = mTrackballRemainsX * 1000 / elapsed; 5380 float yRate = mTrackballRemainsY * 1000 / elapsed; 5381 int viewWidth = getViewWidth(); 5382 int viewHeight = getViewHeight(); 5383 if (mShiftIsPressed && (mNativeClass == 0 5384 || !nativePageShouldHandleShiftAndArrows())) { 5385 moveSelection(scaleTrackballX(xRate, viewWidth), 5386 scaleTrackballY(yRate, viewHeight)); 5387 mTrackballRemainsX = mTrackballRemainsY = 0; 5388 return; 5389 } 5390 float ax = Math.abs(xRate); 5391 float ay = Math.abs(yRate); 5392 float maxA = Math.max(ax, ay); 5393 if (DebugFlags.WEB_VIEW) { 5394 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5395 + " xRate=" + xRate 5396 + " yRate=" + yRate 5397 + " mTrackballRemainsX=" + mTrackballRemainsX 5398 + " mTrackballRemainsY=" + mTrackballRemainsY); 5399 } 5400 int width = mContentWidth - viewWidth; 5401 int height = mContentHeight - viewHeight; 5402 if (width < 0) width = 0; 5403 if (height < 0) height = 0; 5404 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5405 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5406 maxA = Math.max(ax, ay); 5407 int count = Math.max(0, (int) maxA); 5408 int oldScrollX = mScrollX; 5409 int oldScrollY = mScrollY; 5410 if (count > 0) { 5411 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5412 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5413 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5414 KeyEvent.KEYCODE_DPAD_RIGHT; 5415 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5416 if (DebugFlags.WEB_VIEW) { 5417 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5418 + " count=" + count 5419 + " mTrackballRemainsX=" + mTrackballRemainsX 5420 + " mTrackballRemainsY=" + mTrackballRemainsY); 5421 } 5422 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 5423 for (int i = 0; i < count; i++) { 5424 letPageHandleNavKey(selectKeyCode, time, true); 5425 } 5426 letPageHandleNavKey(selectKeyCode, time, false); 5427 } else if (navHandledKey(selectKeyCode, count, false, time)) { 5428 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5429 } 5430 mTrackballRemainsX = mTrackballRemainsY = 0; 5431 } 5432 if (count >= TRACKBALL_SCROLL_COUNT) { 5433 int xMove = scaleTrackballX(xRate, width); 5434 int yMove = scaleTrackballY(yRate, height); 5435 if (DebugFlags.WEB_VIEW) { 5436 Log.v(LOGTAG, "doTrackball pinScrollBy" 5437 + " count=" + count 5438 + " xMove=" + xMove + " yMove=" + yMove 5439 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5440 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5441 ); 5442 } 5443 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5444 xMove = 0; 5445 } 5446 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5447 yMove = 0; 5448 } 5449 if (xMove != 0 || yMove != 0) { 5450 pinScrollBy(xMove, yMove, true, 0); 5451 } 5452 mUserScroll = true; 5453 } 5454 } 5455 5456 private int computeMaxScrollX() { 5457 return Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5458 } 5459 5460 private int computeMaxScrollY() { 5461 return Math.max(computeVerticalScrollRange() + getTitleHeight() 5462 - getViewHeightWithTitle(), 0); 5463 } 5464 5465 public void flingScroll(int vx, int vy) { 5466 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 5467 computeMaxScrollY()); 5468 invalidate(); 5469 } 5470 5471 private void doFling() { 5472 if (mVelocityTracker == null) { 5473 return; 5474 } 5475 int maxX = computeMaxScrollX(); 5476 int maxY = computeMaxScrollY(); 5477 5478 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5479 int vx = (int) mVelocityTracker.getXVelocity(); 5480 int vy = (int) mVelocityTracker.getYVelocity(); 5481 5482 if (mSnapScrollMode != SNAP_NONE) { 5483 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5484 vy = 0; 5485 } else { 5486 vx = 0; 5487 } 5488 } 5489 if (true /* EMG release: make our fling more like Maps' */) { 5490 // maps cuts their velocity in half 5491 vx = vx * 3 / 4; 5492 vy = vy * 3 / 4; 5493 } 5494 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5495 WebViewCore.resumePriority(); 5496 WebViewCore.resumeUpdatePicture(mWebViewCore); 5497 return; 5498 } 5499 float currentVelocity = mScroller.getCurrVelocity(); 5500 if (mLastVelocity > 0 && currentVelocity > 0) { 5501 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5502 - Math.atan2(vy, vx))); 5503 final float circle = (float) (Math.PI) * 2.0f; 5504 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5505 vx += currentVelocity * mLastVelX / mLastVelocity; 5506 vy += currentVelocity * mLastVelY / mLastVelocity; 5507 if (DebugFlags.WEB_VIEW) { 5508 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5509 } 5510 } else if (DebugFlags.WEB_VIEW) { 5511 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5512 } 5513 } else if (DebugFlags.WEB_VIEW) { 5514 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5515 + " current=" + currentVelocity 5516 + " vx=" + vx + " vy=" + vy 5517 + " maxX=" + maxX + " maxY=" + maxY 5518 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5519 } 5520 mLastVelX = vx; 5521 mLastVelY = vy; 5522 mLastVelocity = (float) Math.hypot(vx, vy); 5523 5524 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 5525 // TODO: duration is calculated based on velocity, if the range is 5526 // small, the animation will stop before duration is up. We may 5527 // want to calculate how long the animation is going to run to precisely 5528 // resume the webcore update. 5529 final int time = mScroller.getDuration(); 5530 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5531 awakenScrollBars(time); 5532 invalidate(); 5533 } 5534 5535 private boolean zoomWithPreview(float scale, boolean updateTextWrapScale) { 5536 float oldScale = mActualScale; 5537 mInitialScrollX = mScrollX; 5538 mInitialScrollY = mScrollY; 5539 5540 // snap to DEFAULT_SCALE if it is close 5541 if (Math.abs(scale - mDefaultScale) < MINIMUM_SCALE_INCREMENT) { 5542 scale = mDefaultScale; 5543 } 5544 5545 setNewZoomScale(scale, updateTextWrapScale, false); 5546 5547 if (oldScale != mActualScale) { 5548 // use mZoomPickerScale to see zoom preview first 5549 mZoomStart = SystemClock.uptimeMillis(); 5550 mInvInitialZoomScale = 1.0f / oldScale; 5551 mInvFinalZoomScale = 1.0f / mActualScale; 5552 mZoomScale = mActualScale; 5553 WebViewCore.pauseUpdatePicture(mWebViewCore); 5554 invalidate(); 5555 return true; 5556 } else { 5557 return false; 5558 } 5559 } 5560 5561 /** 5562 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5563 * in charge of installing this view to the view hierarchy. This view will 5564 * become visible when the user starts scrolling via touch and fade away if 5565 * the user does not interact with it. 5566 * <p/> 5567 * API version 3 introduces a built-in zoom mechanism that is shown 5568 * automatically by the MapView. This is the preferred approach for 5569 * showing the zoom UI. 5570 * 5571 * @deprecated The built-in zoom mechanism is preferred, see 5572 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5573 */ 5574 @Deprecated 5575 public View getZoomControls() { 5576 if (!getSettings().supportZoom()) { 5577 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5578 return null; 5579 } 5580 if (mZoomControls == null) { 5581 mZoomControls = createZoomControls(); 5582 5583 /* 5584 * need to be set to VISIBLE first so that getMeasuredHeight() in 5585 * {@link #onSizeChanged()} can return the measured value for proper 5586 * layout. 5587 */ 5588 mZoomControls.setVisibility(View.VISIBLE); 5589 mZoomControlRunnable = new Runnable() { 5590 public void run() { 5591 5592 /* Don't dismiss the controls if the user has 5593 * focus on them. Wait and check again later. 5594 */ 5595 if (!mZoomControls.hasFocus()) { 5596 mZoomControls.hide(); 5597 } else { 5598 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5599 mPrivateHandler.postDelayed(mZoomControlRunnable, 5600 ZOOM_CONTROLS_TIMEOUT); 5601 } 5602 } 5603 }; 5604 } 5605 return mZoomControls; 5606 } 5607 5608 private ExtendedZoomControls createZoomControls() { 5609 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 5610 , null); 5611 zoomControls.setOnZoomInClickListener(new OnClickListener() { 5612 public void onClick(View v) { 5613 // reset time out 5614 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5615 mPrivateHandler.postDelayed(mZoomControlRunnable, 5616 ZOOM_CONTROLS_TIMEOUT); 5617 zoomIn(); 5618 } 5619 }); 5620 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 5621 public void onClick(View v) { 5622 // reset time out 5623 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5624 mPrivateHandler.postDelayed(mZoomControlRunnable, 5625 ZOOM_CONTROLS_TIMEOUT); 5626 zoomOut(); 5627 } 5628 }); 5629 return zoomControls; 5630 } 5631 5632 /** 5633 * Gets the {@link ZoomButtonsController} which can be used to add 5634 * additional buttons to the zoom controls window. 5635 * 5636 * @return The instance of {@link ZoomButtonsController} used by this class, 5637 * or null if it is unavailable. 5638 * @hide 5639 */ 5640 public ZoomButtonsController getZoomButtonsController() { 5641 if (mZoomButtonsController == null) { 5642 mZoomButtonsController = new ZoomButtonsController(this); 5643 mZoomButtonsController.setOnZoomListener(mZoomListener); 5644 // ZoomButtonsController positions the buttons at the bottom, but in 5645 // the middle. Change their layout parameters so they appear on the 5646 // right. 5647 View controls = mZoomButtonsController.getZoomControls(); 5648 ViewGroup.LayoutParams params = controls.getLayoutParams(); 5649 if (params instanceof FrameLayout.LayoutParams) { 5650 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) params; 5651 frameParams.gravity = Gravity.RIGHT; 5652 } 5653 } 5654 return mZoomButtonsController; 5655 } 5656 5657 /** 5658 * Perform zoom in in the webview 5659 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 5660 */ 5661 public boolean zoomIn() { 5662 // TODO: alternatively we can disallow this during draw history mode 5663 switchOutDrawHistory(); 5664 mInZoomOverview = false; 5665 // Center zooming to the center of the screen. 5666 mZoomCenterX = getViewWidth() * .5f; 5667 mZoomCenterY = getViewHeight() * .5f; 5668 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5669 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5670 return zoomWithPreview(mActualScale * 1.25f, true); 5671 } 5672 5673 /** 5674 * Perform zoom out in the webview 5675 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 5676 */ 5677 public boolean zoomOut() { 5678 // TODO: alternatively we can disallow this during draw history mode 5679 switchOutDrawHistory(); 5680 // Center zooming to the center of the screen. 5681 mZoomCenterX = getViewWidth() * .5f; 5682 mZoomCenterY = getViewHeight() * .5f; 5683 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5684 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5685 return zoomWithPreview(mActualScale * 0.8f, true); 5686 } 5687 5688 private void updateSelection() { 5689 if (mNativeClass == 0) { 5690 return; 5691 } 5692 // mLastTouchX and mLastTouchY are the point in the current viewport 5693 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5694 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5695 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 5696 contentX + mNavSlop, contentY + mNavSlop); 5697 nativeSelectBestAt(rect); 5698 } 5699 5700 /** 5701 * Scroll the focused text field/area to match the WebTextView 5702 * @param xPercent New x position of the WebTextView from 0 to 1. 5703 * @param y New y position of the WebTextView in view coordinates 5704 */ 5705 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 5706 if (!inEditingMode() || mWebViewCore == null) { 5707 return; 5708 } 5709 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 5710 // Since this position is relative to the top of the text input 5711 // field, we do not need to take the title bar's height into 5712 // consideration. 5713 viewToContentDimension(y), 5714 new Float(xPercent)); 5715 } 5716 5717 /** 5718 * Set our starting point and time for a drag from the WebTextView. 5719 */ 5720 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 5721 if (!inEditingMode()) { 5722 return; 5723 } 5724 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 5725 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 5726 mLastTouchTime = eventTime; 5727 if (!mScroller.isFinished()) { 5728 abortAnimation(); 5729 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5730 } 5731 mSnapScrollMode = SNAP_NONE; 5732 mVelocityTracker = VelocityTracker.obtain(); 5733 mTouchMode = TOUCH_DRAG_START_MODE; 5734 } 5735 5736 /** 5737 * Given a motion event from the WebTextView, set its location to our 5738 * coordinates, and handle the event. 5739 */ 5740 /*package*/ boolean textFieldDrag(MotionEvent event) { 5741 if (!inEditingMode()) { 5742 return false; 5743 } 5744 mDragFromTextInput = true; 5745 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 5746 (float) (mWebTextView.getTop() - mScrollY)); 5747 boolean result = onTouchEvent(event); 5748 mDragFromTextInput = false; 5749 return result; 5750 } 5751 5752 /** 5753 * Due a touch up from a WebTextView. This will be handled by webkit to 5754 * change the selection. 5755 * @param event MotionEvent in the WebTextView's coordinates. 5756 */ 5757 /*package*/ void touchUpOnTextField(MotionEvent event) { 5758 if (!inEditingMode()) { 5759 return; 5760 } 5761 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 5762 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 5763 nativeMotionUp(x, y, mNavSlop); 5764 } 5765 5766 /** 5767 * Called when pressing the center key or trackball on a textfield. 5768 */ 5769 /*package*/ void centerKeyPressOnTextField() { 5770 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 5771 nativeCursorNodePointer()); 5772 } 5773 5774 private void doShortPress() { 5775 if (mNativeClass == 0) { 5776 return; 5777 } 5778 if (mPreventDefault == PREVENT_DEFAULT_YES) { 5779 return; 5780 } 5781 mTouchMode = TOUCH_DONE_MODE; 5782 switchOutDrawHistory(); 5783 // mLastTouchX and mLastTouchY are the point in the current viewport 5784 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5785 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5786 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 5787 WebViewCore.MotionUpData motionUpData = new WebViewCore 5788 .MotionUpData(); 5789 motionUpData.mFrame = nativeCacheHitFramePointer(); 5790 motionUpData.mNode = nativeCacheHitNodePointer(); 5791 motionUpData.mBounds = nativeCacheHitNodeBounds(); 5792 motionUpData.mX = contentX; 5793 motionUpData.mY = contentY; 5794 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 5795 motionUpData); 5796 } else { 5797 doMotionUp(contentX, contentY); 5798 } 5799 } 5800 5801 private void doMotionUp(int contentX, int contentY) { 5802 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 5803 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 5804 } 5805 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 5806 playSoundEffect(SoundEffectConstants.CLICK); 5807 } 5808 } 5809 5810 /* 5811 * Return true if the view (Plugin) is fully visible and maximized inside 5812 * the WebView. 5813 */ 5814 private boolean isPluginFitOnScreen(ViewManager.ChildView view) { 5815 int viewWidth = getViewWidth(); 5816 int viewHeight = getViewHeightWithTitle(); 5817 float scale = Math.min((float) viewWidth / view.width, 5818 (float) viewHeight / view.height); 5819 if (scale < mMinZoomScale) { 5820 scale = mMinZoomScale; 5821 } else if (scale > mMaxZoomScale) { 5822 scale = mMaxZoomScale; 5823 } 5824 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 5825 if (contentToViewX(view.x) >= mScrollX 5826 && contentToViewX(view.x + view.width) <= mScrollX 5827 + viewWidth 5828 && contentToViewY(view.y) >= mScrollY 5829 && contentToViewY(view.y + view.height) <= mScrollY 5830 + viewHeight) { 5831 return true; 5832 } 5833 } 5834 return false; 5835 } 5836 5837 /* 5838 * Maximize and center the rectangle, specified in the document coordinate 5839 * space, inside the WebView. If the zoom doesn't need to be changed, do an 5840 * animated scroll to center it. If the zoom needs to be changed, find the 5841 * zoom center and do a smooth zoom transition. 5842 */ 5843 private void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 5844 int viewWidth = getViewWidth(); 5845 int viewHeight = getViewHeightWithTitle(); 5846 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 5847 / docHeight); 5848 if (scale < mMinZoomScale) { 5849 scale = mMinZoomScale; 5850 } else if (scale > mMaxZoomScale) { 5851 scale = mMaxZoomScale; 5852 } 5853 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 5854 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 5855 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 5856 true, 0); 5857 } else { 5858 float oldScreenX = docX * mActualScale - mScrollX; 5859 float rectViewX = docX * scale; 5860 float rectViewWidth = docWidth * scale; 5861 float newMaxWidth = mContentWidth * scale; 5862 float newScreenX = (viewWidth - rectViewWidth) / 2; 5863 // pin the newX to the WebView 5864 if (newScreenX > rectViewX) { 5865 newScreenX = rectViewX; 5866 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 5867 newScreenX = viewWidth - (newMaxWidth - rectViewX); 5868 } 5869 mZoomCenterX = (oldScreenX * scale - newScreenX * mActualScale) 5870 / (scale - mActualScale); 5871 float oldScreenY = docY * mActualScale + getTitleHeight() 5872 - mScrollY; 5873 float rectViewY = docY * scale + getTitleHeight(); 5874 float rectViewHeight = docHeight * scale; 5875 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 5876 float newScreenY = (viewHeight - rectViewHeight) / 2; 5877 // pin the newY to the WebView 5878 if (newScreenY > rectViewY) { 5879 newScreenY = rectViewY; 5880 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 5881 newScreenY = viewHeight - (newMaxHeight - rectViewY); 5882 } 5883 mZoomCenterY = (oldScreenY * scale - newScreenY * mActualScale) 5884 / (scale - mActualScale); 5885 zoomWithPreview(scale, false); 5886 } 5887 } 5888 5889 void dismissZoomControl() { 5890 if (mWebViewCore == null) { 5891 // maybe called after WebView's destroy(). As we can't get settings, 5892 // just hide zoom control for both styles. 5893 if (mZoomButtonsController != null) { 5894 mZoomButtonsController.setVisible(false); 5895 } 5896 if (mZoomControls != null) { 5897 mZoomControls.hide(); 5898 } 5899 return; 5900 } 5901 WebSettings settings = getSettings(); 5902 if (settings.getBuiltInZoomControls()) { 5903 if (mZoomButtonsController != null) { 5904 mZoomButtonsController.setVisible(false); 5905 } 5906 } else { 5907 if (mZoomControlRunnable != null) { 5908 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5909 } 5910 if (mZoomControls != null) { 5911 mZoomControls.hide(); 5912 } 5913 } 5914 } 5915 5916 // Rule for double tap: 5917 // 1. if the current scale is not same as the text wrap scale and layout 5918 // algorithm is NARROW_COLUMNS, fit to column; 5919 // 2. if the current state is not overview mode, change to overview mode; 5920 // 3. if the current state is overview mode, change to default scale. 5921 private void doDoubleTap() { 5922 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 5923 return; 5924 } 5925 mZoomCenterX = mLastTouchX; 5926 mZoomCenterY = mLastTouchY; 5927 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5928 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5929 WebSettings settings = getSettings(); 5930 settings.setDoubleTapToastCount(0); 5931 // remove the zoom control after double tap 5932 dismissZoomControl(); 5933 ViewManager.ChildView plugin = mViewManager.hitTest(mAnchorX, mAnchorY); 5934 if (plugin != null) { 5935 if (isPluginFitOnScreen(plugin)) { 5936 mInZoomOverview = true; 5937 // Force the titlebar fully reveal in overview mode 5938 if (mScrollY < getTitleHeight()) mScrollY = 0; 5939 zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth, 5940 true); 5941 } else { 5942 mInZoomOverview = false; 5943 centerFitRect(plugin.x, plugin.y, plugin.width, plugin.height); 5944 } 5945 return; 5946 } 5947 boolean zoomToDefault = false; 5948 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 5949 && (Math.abs(mActualScale - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT)) { 5950 setNewZoomScale(mActualScale, true, true); 5951 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 5952 if (Math.abs(mActualScale - overviewScale) < MINIMUM_SCALE_INCREMENT) { 5953 mInZoomOverview = true; 5954 } 5955 } else if (!mInZoomOverview) { 5956 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 5957 if (Math.abs(mActualScale - newScale) >= MINIMUM_SCALE_INCREMENT) { 5958 mInZoomOverview = true; 5959 // Force the titlebar fully reveal in overview mode 5960 if (mScrollY < getTitleHeight()) mScrollY = 0; 5961 zoomWithPreview(newScale, true); 5962 } else if (Math.abs(mActualScale - mDefaultScale) >= MINIMUM_SCALE_INCREMENT) { 5963 zoomToDefault = true; 5964 } 5965 } else { 5966 zoomToDefault = true; 5967 } 5968 if (zoomToDefault) { 5969 mInZoomOverview = false; 5970 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 5971 if (left != NO_LEFTEDGE) { 5972 // add a 5pt padding to the left edge. 5973 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 5974 - mScrollX; 5975 // Re-calculate the zoom center so that the new scroll x will be 5976 // on the left edge. 5977 if (viewLeft > 0) { 5978 mZoomCenterX = viewLeft * mDefaultScale 5979 / (mDefaultScale - mActualScale); 5980 } else { 5981 scrollBy(viewLeft, 0); 5982 mZoomCenterX = 0; 5983 } 5984 } 5985 zoomWithPreview(mDefaultScale, true); 5986 } 5987 } 5988 5989 // Called by JNI to handle a touch on a node representing an email address, 5990 // address, or phone number 5991 private void overrideLoading(String url) { 5992 mCallbackProxy.uiOverrideUrlLoading(url); 5993 } 5994 5995 @Override 5996 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 5997 // FIXME: If a subwindow is showing find, and the user touches the 5998 // background window, it can steal focus. 5999 if (mFindIsUp) return false; 6000 boolean result = false; 6001 if (inEditingMode()) { 6002 result = mWebTextView.requestFocus(direction, 6003 previouslyFocusedRect); 6004 } else { 6005 result = super.requestFocus(direction, previouslyFocusedRect); 6006 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 6007 // For cases such as GMail, where we gain focus from a direction, 6008 // we want to move to the first available link. 6009 // FIXME: If there are no visible links, we may not want to 6010 int fakeKeyDirection = 0; 6011 switch(direction) { 6012 case View.FOCUS_UP: 6013 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6014 break; 6015 case View.FOCUS_DOWN: 6016 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6017 break; 6018 case View.FOCUS_LEFT: 6019 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6020 break; 6021 case View.FOCUS_RIGHT: 6022 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6023 break; 6024 default: 6025 return result; 6026 } 6027 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6028 navHandledKey(fakeKeyDirection, 1, true, 0); 6029 } 6030 } 6031 } 6032 return result; 6033 } 6034 6035 @Override 6036 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6037 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6038 6039 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6040 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6041 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6042 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6043 6044 int measuredHeight = heightSize; 6045 int measuredWidth = widthSize; 6046 6047 // Grab the content size from WebViewCore. 6048 int contentHeight = contentToViewDimension(mContentHeight); 6049 int contentWidth = contentToViewDimension(mContentWidth); 6050 6051// Log.d(LOGTAG, "------- measure " + heightMode); 6052 6053 if (heightMode != MeasureSpec.EXACTLY) { 6054 mHeightCanMeasure = true; 6055 measuredHeight = contentHeight; 6056 if (heightMode == MeasureSpec.AT_MOST) { 6057 // If we are larger than the AT_MOST height, then our height can 6058 // no longer be measured and we should scroll internally. 6059 if (measuredHeight > heightSize) { 6060 measuredHeight = heightSize; 6061 mHeightCanMeasure = false; 6062 } 6063 } 6064 } else { 6065 mHeightCanMeasure = false; 6066 } 6067 if (mNativeClass != 0) { 6068 nativeSetHeightCanMeasure(mHeightCanMeasure); 6069 } 6070 // For the width, always use the given size unless unspecified. 6071 if (widthMode == MeasureSpec.UNSPECIFIED) { 6072 mWidthCanMeasure = true; 6073 measuredWidth = contentWidth; 6074 } else { 6075 mWidthCanMeasure = false; 6076 } 6077 6078 synchronized (this) { 6079 setMeasuredDimension(measuredWidth, measuredHeight); 6080 } 6081 } 6082 6083 @Override 6084 public boolean requestChildRectangleOnScreen(View child, 6085 Rect rect, 6086 boolean immediate) { 6087 rect.offset(child.getLeft() - child.getScrollX(), 6088 child.getTop() - child.getScrollY()); 6089 6090 Rect content = new Rect(viewToContentX(mScrollX), 6091 viewToContentY(mScrollY), 6092 viewToContentX(mScrollX + getWidth() 6093 - getVerticalScrollbarWidth()), 6094 viewToContentY(mScrollY + getViewHeightWithTitle())); 6095 content = nativeSubtractLayers(content); 6096 int screenTop = contentToViewY(content.top); 6097 int screenBottom = contentToViewY(content.bottom); 6098 int height = screenBottom - screenTop; 6099 int scrollYDelta = 0; 6100 6101 if (rect.bottom > screenBottom) { 6102 int oneThirdOfScreenHeight = height / 3; 6103 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6104 // If the rectangle is too tall to fit in the bottom two thirds 6105 // of the screen, place it at the top. 6106 scrollYDelta = rect.top - screenTop; 6107 } else { 6108 // If the rectangle will still fit on screen, we want its 6109 // top to be in the top third of the screen. 6110 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6111 } 6112 } else if (rect.top < screenTop) { 6113 scrollYDelta = rect.top - screenTop; 6114 } 6115 6116 int screenLeft = contentToViewX(content.left); 6117 int screenRight = contentToViewX(content.right); 6118 int width = screenRight - screenLeft; 6119 int scrollXDelta = 0; 6120 6121 if (rect.right > screenRight && rect.left > screenLeft) { 6122 if (rect.width() > width) { 6123 scrollXDelta += (rect.left - screenLeft); 6124 } else { 6125 scrollXDelta += (rect.right - screenRight); 6126 } 6127 } else if (rect.left < screenLeft) { 6128 scrollXDelta -= (screenLeft - rect.left); 6129 } 6130 6131 if ((scrollYDelta | scrollXDelta) != 0) { 6132 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6133 } 6134 6135 return false; 6136 } 6137 6138 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6139 String replace, int newStart, int newEnd) { 6140 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6141 arg.mReplace = replace; 6142 arg.mNewStart = newStart; 6143 arg.mNewEnd = newEnd; 6144 mTextGeneration++; 6145 arg.mTextGeneration = mTextGeneration; 6146 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6147 } 6148 6149 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6150 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6151 arg.mEvent = event; 6152 arg.mCurrentText = currentText; 6153 // Increase our text generation number, and pass it to webcore thread 6154 mTextGeneration++; 6155 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6156 // WebKit's document state is not saved until about to leave the page. 6157 // To make sure the host application, like Browser, has the up to date 6158 // document state when it goes to background, we force to save the 6159 // document state. 6160 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6161 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6162 cursorData(), 1000); 6163 } 6164 6165 /* package */ synchronized WebViewCore getWebViewCore() { 6166 return mWebViewCore; 6167 } 6168 6169 //------------------------------------------------------------------------- 6170 // Methods can be called from a separate thread, like WebViewCore 6171 // If it needs to call the View system, it has to send message. 6172 //------------------------------------------------------------------------- 6173 6174 /** 6175 * General handler to receive message coming from webkit thread 6176 */ 6177 class PrivateHandler extends Handler { 6178 @Override 6179 public void handleMessage(Message msg) { 6180 // exclude INVAL_RECT_MSG_ID since it is frequently output 6181 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6182 if (msg.what >= FIRST_PRIVATE_MSG_ID 6183 && msg.what <= LAST_PRIVATE_MSG_ID) { 6184 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6185 - FIRST_PRIVATE_MSG_ID]); 6186 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6187 && msg.what <= LAST_PACKAGE_MSG_ID) { 6188 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6189 - FIRST_PACKAGE_MSG_ID]); 6190 } else { 6191 Log.v(LOGTAG, Integer.toString(msg.what)); 6192 } 6193 } 6194 if (mWebViewCore == null) { 6195 // after WebView's destroy() is called, skip handling messages. 6196 return; 6197 } 6198 switch (msg.what) { 6199 case REMEMBER_PASSWORD: { 6200 mDatabase.setUsernamePassword( 6201 msg.getData().getString("host"), 6202 msg.getData().getString("username"), 6203 msg.getData().getString("password")); 6204 ((Message) msg.obj).sendToTarget(); 6205 break; 6206 } 6207 case NEVER_REMEMBER_PASSWORD: { 6208 mDatabase.setUsernamePassword( 6209 msg.getData().getString("host"), null, null); 6210 ((Message) msg.obj).sendToTarget(); 6211 break; 6212 } 6213 case PREVENT_DEFAULT_TIMEOUT: { 6214 // if timeout happens, cancel it so that it won't block UI 6215 // to continue handling touch events 6216 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6217 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6218 || (msg.arg1 == MotionEvent.ACTION_MOVE 6219 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6220 cancelWebCoreTouchEvent( 6221 viewToContentX((int) mLastTouchX + mScrollX), 6222 viewToContentY((int) mLastTouchY + mScrollY), 6223 true); 6224 } 6225 break; 6226 } 6227 case SWITCH_TO_SHORTPRESS: { 6228 if (mTouchMode == TOUCH_INIT_MODE) { 6229 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6230 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6231 updateSelection(); 6232 } else { 6233 // set to TOUCH_SHORTPRESS_MODE so that it won't 6234 // trigger double tap any more 6235 mTouchMode = TOUCH_SHORTPRESS_MODE; 6236 } 6237 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6238 mTouchMode = TOUCH_DONE_MODE; 6239 } 6240 break; 6241 } 6242 case SWITCH_TO_LONGPRESS: { 6243 if (inFullScreenMode() || mDeferTouchProcess) { 6244 TouchEventData ted = new TouchEventData(); 6245 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6246 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 6247 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 6248 // metaState for long press is tricky. Should it be the 6249 // state when the press started or when the press was 6250 // released? Or some intermediary key state? For 6251 // simplicity for now, we don't set it. 6252 ted.mMetaState = 0; 6253 ted.mReprocess = mDeferTouchProcess; 6254 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6255 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6256 mTouchMode = TOUCH_DONE_MODE; 6257 performLongClick(); 6258 } 6259 break; 6260 } 6261 case RELEASE_SINGLE_TAP: { 6262 doShortPress(); 6263 break; 6264 } 6265 case SCROLL_BY_MSG_ID: 6266 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6267 break; 6268 case SYNC_SCROLL_TO_MSG_ID: 6269 if (mUserScroll) { 6270 // if user has scrolled explicitly, don't sync the 6271 // scroll position any more 6272 mUserScroll = false; 6273 break; 6274 } 6275 // fall through 6276 case SCROLL_TO_MSG_ID: 6277 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6278 // if we can't scroll to the exact position due to pin, 6279 // send a message to WebCore to re-scroll when we get a 6280 // new picture 6281 mUserScroll = false; 6282 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6283 msg.arg1, msg.arg2); 6284 } 6285 break; 6286 case SPAWN_SCROLL_TO_MSG_ID: 6287 spawnContentScrollTo(msg.arg1, msg.arg2); 6288 break; 6289 case UPDATE_ZOOM_RANGE: { 6290 WebViewCore.RestoreState restoreState 6291 = (WebViewCore.RestoreState) msg.obj; 6292 // mScrollX contains the new minPrefWidth 6293 updateZoomRange(restoreState, getViewWidth(), 6294 restoreState.mScrollX, false); 6295 break; 6296 } 6297 case NEW_PICTURE_MSG_ID: { 6298 // If we've previously delayed deleting a root 6299 // layer, do it now. 6300 if (mDelayedDeleteRootLayer) { 6301 mDelayedDeleteRootLayer = false; 6302 nativeSetRootLayer(0); 6303 } 6304 WebSettings settings = mWebViewCore.getSettings(); 6305 // called for new content 6306 final int viewWidth = getViewWidth(); 6307 final WebViewCore.DrawData draw = 6308 (WebViewCore.DrawData) msg.obj; 6309 final Point viewSize = draw.mViewPoint; 6310 boolean useWideViewport = settings.getUseWideViewPort(); 6311 WebViewCore.RestoreState restoreState = draw.mRestoreState; 6312 boolean hasRestoreState = restoreState != null; 6313 if (hasRestoreState) { 6314 updateZoomRange(restoreState, viewSize.x, 6315 draw.mMinPrefWidth, true); 6316 if (!mDrawHistory) { 6317 mInZoomOverview = false; 6318 6319 if (mInitialScaleInPercent > 0) { 6320 setNewZoomScale(mInitialScaleInPercent / 100.0f, 6321 mInitialScaleInPercent != mTextWrapScale * 100, 6322 false); 6323 } else if (restoreState.mViewScale > 0) { 6324 mTextWrapScale = restoreState.mTextWrapScale; 6325 setNewZoomScale(restoreState.mViewScale, false, 6326 false); 6327 } else { 6328 mInZoomOverview = useWideViewport 6329 && settings.getLoadWithOverviewMode(); 6330 float scale; 6331 if (mInZoomOverview) { 6332 scale = (float) viewWidth 6333 / DEFAULT_VIEWPORT_WIDTH; 6334 } else { 6335 scale = restoreState.mTextWrapScale; 6336 } 6337 setNewZoomScale(scale, Math.abs(scale 6338 - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT, 6339 false); 6340 } 6341 setContentScrollTo(restoreState.mScrollX, 6342 restoreState.mScrollY); 6343 // As we are on a new page, remove the WebTextView. This 6344 // is necessary for page loads driven by webkit, and in 6345 // particular when the user was on a password field, so 6346 // the WebTextView was visible. 6347 clearTextEntry(false); 6348 // update the zoom buttons as the scale can be changed 6349 if (getSettings().getBuiltInZoomControls()) { 6350 updateZoomButtonsEnabled(); 6351 } 6352 } 6353 } 6354 // We update the layout (i.e. request a layout from the 6355 // view system) if the last view size that we sent to 6356 // WebCore matches the view size of the picture we just 6357 // received in the fixed dimension. 6358 final boolean updateLayout = viewSize.x == mLastWidthSent 6359 && viewSize.y == mLastHeightSent; 6360 recordNewContentSize(draw.mWidthHeight.x, 6361 draw.mWidthHeight.y, updateLayout); 6362 if (DebugFlags.WEB_VIEW) { 6363 Rect b = draw.mInvalRegion.getBounds(); 6364 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6365 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6366 } 6367 invalidateContentRect(draw.mInvalRegion.getBounds()); 6368 if (mPictureListener != null) { 6369 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6370 } 6371 if (useWideViewport) { 6372 // limit mZoomOverviewWidth upper bound to 6373 // sMaxViewportWidth so that if the page doesn't behave 6374 // well, the WebView won't go insane. limit the lower 6375 // bound to match the default scale for mobile sites. 6376 mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math 6377 .max((int) (viewWidth / mDefaultScale), Math 6378 .max(draw.mMinPrefWidth, 6379 draw.mViewPoint.x))); 6380 } 6381 if (!mMinZoomScaleFixed) { 6382 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 6383 } 6384 if (!mDrawHistory && mInZoomOverview) { 6385 // fit the content width to the current view. Ignore 6386 // the rounding error case. 6387 if (Math.abs((viewWidth * mInvActualScale) 6388 - mZoomOverviewWidth) > 1) { 6389 setNewZoomScale((float) viewWidth 6390 / mZoomOverviewWidth, Math.abs(mActualScale 6391 - mTextWrapScale) < MINIMUM_SCALE_INCREMENT, 6392 false); 6393 } 6394 } 6395 if (draw.mFocusSizeChanged && inEditingMode()) { 6396 mFocusSizeChanged = true; 6397 } 6398 if (hasRestoreState) { 6399 mViewManager.postReadyToDrawAll(); 6400 } 6401 break; 6402 } 6403 case WEBCORE_INITIALIZED_MSG_ID: 6404 // nativeCreate sets mNativeClass to a non-zero value 6405 nativeCreate(msg.arg1); 6406 break; 6407 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6408 // Make sure that the textfield is currently focused 6409 // and representing the same node as the pointer. 6410 if (inEditingMode() && 6411 mWebTextView.isSameTextField(msg.arg1)) { 6412 if (msg.getData().getBoolean("password")) { 6413 Spannable text = (Spannable) mWebTextView.getText(); 6414 int start = Selection.getSelectionStart(text); 6415 int end = Selection.getSelectionEnd(text); 6416 mWebTextView.setInPassword(true); 6417 // Restore the selection, which may have been 6418 // ruined by setInPassword. 6419 Spannable pword = 6420 (Spannable) mWebTextView.getText(); 6421 Selection.setSelection(pword, start, end); 6422 // If the text entry has created more events, ignore 6423 // this one. 6424 } else if (msg.arg2 == mTextGeneration) { 6425 mWebTextView.setTextAndKeepSelection( 6426 (String) msg.obj); 6427 } 6428 } 6429 break; 6430 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 6431 displaySoftKeyboard(true); 6432 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 6433 case UPDATE_TEXT_SELECTION_MSG_ID: 6434 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6435 (WebViewCore.TextSelectionData) msg.obj); 6436 break; 6437 case RETURN_LABEL: 6438 if (inEditingMode() 6439 && mWebTextView.isSameTextField(msg.arg1)) { 6440 mWebTextView.setHint((String) msg.obj); 6441 InputMethodManager imm 6442 = InputMethodManager.peekInstance(); 6443 // The hint is propagated to the IME in 6444 // onCreateInputConnection. If the IME is already 6445 // active, restart it so that its hint text is updated. 6446 if (imm != null && imm.isActive(mWebTextView)) { 6447 imm.restartInput(mWebTextView); 6448 } 6449 } 6450 break; 6451 case UNHANDLED_NAV_KEY: 6452 navHandledKey(msg.arg1, 1, false, 0); 6453 break; 6454 case UPDATE_TEXT_ENTRY_MSG_ID: 6455 // this is sent after finishing resize in WebViewCore. Make 6456 // sure the text edit box is still on the screen. 6457 if (inEditingMode() && nativeCursorIsTextInput()) { 6458 mWebTextView.bringIntoView(); 6459 rebuildWebTextView(); 6460 } 6461 break; 6462 case CLEAR_TEXT_ENTRY: 6463 clearTextEntry(false); 6464 break; 6465 case INVAL_RECT_MSG_ID: { 6466 Rect r = (Rect)msg.obj; 6467 if (r == null) { 6468 invalidate(); 6469 } else { 6470 // we need to scale r from content into view coords, 6471 // which viewInvalidate() does for us 6472 viewInvalidate(r.left, r.top, r.right, r.bottom); 6473 } 6474 break; 6475 } 6476 case IMMEDIATE_REPAINT_MSG_ID: { 6477 invalidate(); 6478 break; 6479 } 6480 case SET_ROOT_LAYER_MSG_ID: { 6481 if (0 == msg.arg1) { 6482 // Null indicates deleting the old layer, but 6483 // don't actually do so until we've got the 6484 // new page to display. 6485 mDelayedDeleteRootLayer = true; 6486 } else { 6487 mDelayedDeleteRootLayer = false; 6488 nativeSetRootLayer(msg.arg1); 6489 invalidate(); 6490 } 6491 break; 6492 } 6493 case REQUEST_FORM_DATA: 6494 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6495 if (mWebTextView.isSameTextField(msg.arg1)) { 6496 mWebTextView.setAdapterCustom(adapter); 6497 } 6498 break; 6499 case RESUME_WEBCORE_PRIORITY: 6500 WebViewCore.resumePriority(); 6501 WebViewCore.resumeUpdatePicture(mWebViewCore); 6502 break; 6503 6504 case LONG_PRESS_CENTER: 6505 // as this is shared by keydown and trackballdown, reset all 6506 // the states 6507 mGotCenterDown = false; 6508 mTrackballDown = false; 6509 performLongClick(); 6510 break; 6511 6512 case WEBCORE_NEED_TOUCH_EVENTS: 6513 mForwardTouchEvents = (msg.arg1 != 0); 6514 break; 6515 6516 case PREVENT_TOUCH_ID: 6517 if (inFullScreenMode()) { 6518 break; 6519 } 6520 if (msg.obj == null) { 6521 if (msg.arg1 == MotionEvent.ACTION_DOWN 6522 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 6523 // if prevent default is called from WebCore, UI 6524 // will not handle the rest of the touch events any 6525 // more. 6526 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6527 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 6528 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 6529 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6530 // the return for the first ACTION_MOVE will decide 6531 // whether UI will handle touch or not. Currently no 6532 // support for alternating prevent default 6533 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6534 : PREVENT_DEFAULT_NO; 6535 } 6536 } else if (msg.arg2 == 0) { 6537 // prevent default is not called in WebCore, so the 6538 // message needs to be reprocessed in UI 6539 TouchEventData ted = (TouchEventData) msg.obj; 6540 switch (ted.mAction) { 6541 case MotionEvent.ACTION_DOWN: 6542 mLastDeferTouchX = contentToViewX(ted.mX) 6543 - mScrollX; 6544 mLastDeferTouchY = contentToViewY(ted.mY) 6545 - mScrollY; 6546 mDeferTouchMode = TOUCH_INIT_MODE; 6547 break; 6548 case MotionEvent.ACTION_MOVE: { 6549 // no snapping in defer process 6550 int x = contentToViewX(ted.mX) - mScrollX; 6551 int y = contentToViewY(ted.mY) - mScrollY; 6552 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 6553 mDeferTouchMode = TOUCH_DRAG_MODE; 6554 mLastDeferTouchX = x; 6555 mLastDeferTouchY = y; 6556 startDrag(); 6557 } 6558 int deltaX = pinLocX((int) (mScrollX 6559 + mLastDeferTouchX - x)) 6560 - mScrollX; 6561 int deltaY = pinLocY((int) (mScrollY 6562 + mLastDeferTouchY - y)) 6563 - mScrollY; 6564 doDrag(deltaX, deltaY); 6565 if (deltaX != 0) mLastDeferTouchX = x; 6566 if (deltaY != 0) mLastDeferTouchY = y; 6567 break; 6568 } 6569 case MotionEvent.ACTION_UP: 6570 case MotionEvent.ACTION_CANCEL: 6571 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 6572 // no fling in defer process 6573 WebViewCore.resumePriority(); 6574 WebViewCore.resumeUpdatePicture(mWebViewCore); 6575 } 6576 mDeferTouchMode = TOUCH_DONE_MODE; 6577 break; 6578 case WebViewCore.ACTION_DOUBLETAP: 6579 // doDoubleTap() needs mLastTouchX/Y as anchor 6580 mLastTouchX = contentToViewX(ted.mX) - mScrollX; 6581 mLastTouchY = contentToViewY(ted.mY) - mScrollY; 6582 doDoubleTap(); 6583 mDeferTouchMode = TOUCH_DONE_MODE; 6584 break; 6585 case WebViewCore.ACTION_LONGPRESS: 6586 HitTestResult hitTest = getHitTestResult(); 6587 if (hitTest != null && hitTest.mType 6588 != HitTestResult.UNKNOWN_TYPE) { 6589 performLongClick(); 6590 } 6591 mDeferTouchMode = TOUCH_DONE_MODE; 6592 break; 6593 } 6594 } 6595 break; 6596 6597 case REQUEST_KEYBOARD: 6598 if (msg.arg1 == 0) { 6599 hideSoftKeyboard(); 6600 } else { 6601 displaySoftKeyboard(false); 6602 } 6603 break; 6604 6605 case FIND_AGAIN: 6606 // Ignore if find has been dismissed. 6607 if (mFindIsUp) { 6608 findAll(mLastFind); 6609 } 6610 break; 6611 6612 case DRAG_HELD_MOTIONLESS: 6613 mHeldMotionless = MOTIONLESS_TRUE; 6614 invalidate(); 6615 // fall through to keep scrollbars awake 6616 6617 case AWAKEN_SCROLL_BARS: 6618 if (mTouchMode == TOUCH_DRAG_MODE 6619 && mHeldMotionless == MOTIONLESS_TRUE) { 6620 awakenScrollBars(ViewConfiguration 6621 .getScrollDefaultDelay(), false); 6622 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6623 .obtainMessage(AWAKEN_SCROLL_BARS), 6624 ViewConfiguration.getScrollDefaultDelay()); 6625 } 6626 break; 6627 6628 case DO_MOTION_UP: 6629 doMotionUp(msg.arg1, msg.arg2); 6630 break; 6631 6632 case SHOW_FULLSCREEN: { 6633 View view = (View) msg.obj; 6634 int npp = msg.arg1; 6635 6636 if (mFullScreenHolder != null) { 6637 Log.w(LOGTAG, "Should not have another full screen."); 6638 mFullScreenHolder.dismiss(); 6639 } 6640 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 6641 mFullScreenHolder.setContentView(view); 6642 mFullScreenHolder.setCancelable(false); 6643 mFullScreenHolder.setCanceledOnTouchOutside(false); 6644 mFullScreenHolder.show(); 6645 6646 break; 6647 } 6648 case HIDE_FULLSCREEN: 6649 if (inFullScreenMode()) { 6650 mFullScreenHolder.dismiss(); 6651 mFullScreenHolder = null; 6652 } 6653 break; 6654 6655 case DOM_FOCUS_CHANGED: 6656 if (inEditingMode()) { 6657 nativeClearCursor(); 6658 rebuildWebTextView(); 6659 } 6660 break; 6661 6662 case SHOW_RECT_MSG_ID: { 6663 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6664 int x = mScrollX; 6665 int left = contentToViewX(data.mLeft); 6666 int width = contentToViewDimension(data.mWidth); 6667 int maxWidth = contentToViewDimension(data.mContentWidth); 6668 int viewWidth = getViewWidth(); 6669 if (width < viewWidth) { 6670 // center align 6671 x += left + width / 2 - mScrollX - viewWidth / 2; 6672 } else { 6673 x += (int) (left + data.mXPercentInDoc * width 6674 - mScrollX - data.mXPercentInView * viewWidth); 6675 } 6676 if (DebugFlags.WEB_VIEW) { 6677 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6678 width + ",maxWidth=" + maxWidth + 6679 ",viewWidth=" + viewWidth + ",x=" 6680 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6681 ",xPercentInView=" + data.mXPercentInView+ ")"); 6682 } 6683 // use the passing content width to cap x as the current 6684 // mContentWidth may not be updated yet 6685 x = Math.max(0, 6686 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6687 int top = contentToViewY(data.mTop); 6688 int height = contentToViewDimension(data.mHeight); 6689 int maxHeight = contentToViewDimension(data.mContentHeight); 6690 int viewHeight = getViewHeight(); 6691 int y = (int) (top + data.mYPercentInDoc * height - 6692 data.mYPercentInView * viewHeight); 6693 if (DebugFlags.WEB_VIEW) { 6694 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6695 height + ",maxHeight=" + maxHeight + 6696 ",viewHeight=" + viewHeight + ",y=" 6697 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6698 ",yPercentInView=" + data.mYPercentInView+ ")"); 6699 } 6700 // use the passing content height to cap y as the current 6701 // mContentHeight may not be updated yet 6702 y = Math.max(0, 6703 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6704 // We need to take into account the visible title height 6705 // when scrolling since y is an absolute view position. 6706 y = Math.max(0, y - getVisibleTitleHeight()); 6707 scrollTo(x, y); 6708 } 6709 break; 6710 6711 case CENTER_FIT_RECT: 6712 Rect r = (Rect)msg.obj; 6713 mInZoomOverview = false; 6714 centerFitRect(r.left, r.top, r.width(), r.height()); 6715 break; 6716 6717 case SET_SCROLLBAR_MODES: 6718 mHorizontalScrollBarMode = msg.arg1; 6719 mVerticalScrollBarMode = msg.arg2; 6720 break; 6721 6722 default: 6723 super.handleMessage(msg); 6724 break; 6725 } 6726 } 6727 } 6728 6729 /** 6730 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 6731 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 6732 */ 6733 private void updateTextSelectionFromMessage(int nodePointer, 6734 int textGeneration, WebViewCore.TextSelectionData data) { 6735 if (inEditingMode() 6736 && mWebTextView.isSameTextField(nodePointer) 6737 && textGeneration == mTextGeneration) { 6738 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 6739 } 6740 } 6741 6742 // Class used to use a dropdown for a <select> element 6743 private class InvokeListBox implements Runnable { 6744 // Whether the listbox allows multiple selection. 6745 private boolean mMultiple; 6746 // Passed in to a list with multiple selection to tell 6747 // which items are selected. 6748 private int[] mSelectedArray; 6749 // Passed in to a list with single selection to tell 6750 // where the initial selection is. 6751 private int mSelection; 6752 6753 private Container[] mContainers; 6754 6755 // Need these to provide stable ids to my ArrayAdapter, 6756 // which normally does not have stable ids. (Bug 1250098) 6757 private class Container extends Object { 6758 /** 6759 * Possible values for mEnabled. Keep in sync with OptionStatus in 6760 * WebViewCore.cpp 6761 */ 6762 final static int OPTGROUP = -1; 6763 final static int OPTION_DISABLED = 0; 6764 final static int OPTION_ENABLED = 1; 6765 6766 String mString; 6767 int mEnabled; 6768 int mId; 6769 6770 public String toString() { 6771 return mString; 6772 } 6773 } 6774 6775 /** 6776 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6777 * and allow filtering. 6778 */ 6779 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6780 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6781 super(context, 6782 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6783 com.android.internal.R.layout.select_dialog_singlechoice, 6784 objects); 6785 } 6786 6787 @Override 6788 public View getView(int position, View convertView, 6789 ViewGroup parent) { 6790 // Always pass in null so that we will get a new CheckedTextView 6791 // Otherwise, an item which was previously used as an <optgroup> 6792 // element (i.e. has no check), could get used as an <option> 6793 // element, which needs a checkbox/radio, but it would not have 6794 // one. 6795 convertView = super.getView(position, null, parent); 6796 Container c = item(position); 6797 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6798 // ListView does not draw dividers between disabled and 6799 // enabled elements. Use a LinearLayout to provide dividers 6800 LinearLayout layout = new LinearLayout(mContext); 6801 layout.setOrientation(LinearLayout.VERTICAL); 6802 if (position > 0) { 6803 View dividerTop = new View(mContext); 6804 dividerTop.setBackgroundResource( 6805 android.R.drawable.divider_horizontal_bright); 6806 layout.addView(dividerTop); 6807 } 6808 6809 if (Container.OPTGROUP == c.mEnabled) { 6810 // Currently select_dialog_multichoice and 6811 // select_dialog_singlechoice are CheckedTextViews. If 6812 // that changes, the class cast will no longer be valid. 6813 Assert.assertTrue( 6814 convertView instanceof CheckedTextView); 6815 ((CheckedTextView) convertView).setCheckMarkDrawable( 6816 null); 6817 } else { 6818 // c.mEnabled == Container.OPTION_DISABLED 6819 // Draw the disabled element in a disabled state. 6820 convertView.setEnabled(false); 6821 } 6822 6823 layout.addView(convertView); 6824 if (position < getCount() - 1) { 6825 View dividerBottom = new View(mContext); 6826 dividerBottom.setBackgroundResource( 6827 android.R.drawable.divider_horizontal_bright); 6828 layout.addView(dividerBottom); 6829 } 6830 return layout; 6831 } 6832 return convertView; 6833 } 6834 6835 @Override 6836 public boolean hasStableIds() { 6837 // AdapterView's onChanged method uses this to determine whether 6838 // to restore the old state. Return false so that the old (out 6839 // of date) state does not replace the new, valid state. 6840 return false; 6841 } 6842 6843 private Container item(int position) { 6844 if (position < 0 || position >= getCount()) { 6845 return null; 6846 } 6847 return (Container) getItem(position); 6848 } 6849 6850 @Override 6851 public long getItemId(int position) { 6852 Container item = item(position); 6853 if (item == null) { 6854 return -1; 6855 } 6856 return item.mId; 6857 } 6858 6859 @Override 6860 public boolean areAllItemsEnabled() { 6861 return false; 6862 } 6863 6864 @Override 6865 public boolean isEnabled(int position) { 6866 Container item = item(position); 6867 if (item == null) { 6868 return false; 6869 } 6870 return Container.OPTION_ENABLED == item.mEnabled; 6871 } 6872 } 6873 6874 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 6875 mMultiple = true; 6876 mSelectedArray = selected; 6877 6878 int length = array.length; 6879 mContainers = new Container[length]; 6880 for (int i = 0; i < length; i++) { 6881 mContainers[i] = new Container(); 6882 mContainers[i].mString = array[i]; 6883 mContainers[i].mEnabled = enabled[i]; 6884 mContainers[i].mId = i; 6885 } 6886 } 6887 6888 private InvokeListBox(String[] array, int[] enabled, int selection) { 6889 mSelection = selection; 6890 mMultiple = false; 6891 6892 int length = array.length; 6893 mContainers = new Container[length]; 6894 for (int i = 0; i < length; i++) { 6895 mContainers[i] = new Container(); 6896 mContainers[i].mString = array[i]; 6897 mContainers[i].mEnabled = enabled[i]; 6898 mContainers[i].mId = i; 6899 } 6900 } 6901 6902 /* 6903 * Whenever the data set changes due to filtering, this class ensures 6904 * that the checked item remains checked. 6905 */ 6906 private class SingleDataSetObserver extends DataSetObserver { 6907 private long mCheckedId; 6908 private ListView mListView; 6909 private Adapter mAdapter; 6910 6911 /* 6912 * Create a new observer. 6913 * @param id The ID of the item to keep checked. 6914 * @param l ListView for getting and clearing the checked states 6915 * @param a Adapter for getting the IDs 6916 */ 6917 public SingleDataSetObserver(long id, ListView l, Adapter a) { 6918 mCheckedId = id; 6919 mListView = l; 6920 mAdapter = a; 6921 } 6922 6923 public void onChanged() { 6924 // The filter may have changed which item is checked. Find the 6925 // item that the ListView thinks is checked. 6926 int position = mListView.getCheckedItemPosition(); 6927 long id = mAdapter.getItemId(position); 6928 if (mCheckedId != id) { 6929 // Clear the ListView's idea of the checked item, since 6930 // it is incorrect 6931 mListView.clearChoices(); 6932 // Search for mCheckedId. If it is in the filtered list, 6933 // mark it as checked 6934 int count = mAdapter.getCount(); 6935 for (int i = 0; i < count; i++) { 6936 if (mAdapter.getItemId(i) == mCheckedId) { 6937 mListView.setItemChecked(i, true); 6938 break; 6939 } 6940 } 6941 } 6942 } 6943 6944 public void onInvalidate() {} 6945 } 6946 6947 public void run() { 6948 final ListView listView = (ListView) LayoutInflater.from(mContext) 6949 .inflate(com.android.internal.R.layout.select_dialog, null); 6950 final MyArrayListAdapter adapter = new 6951 MyArrayListAdapter(mContext, mContainers, mMultiple); 6952 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 6953 .setView(listView).setCancelable(true) 6954 .setInverseBackgroundForced(true); 6955 6956 if (mMultiple) { 6957 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 6958 public void onClick(DialogInterface dialog, int which) { 6959 mWebViewCore.sendMessage( 6960 EventHub.LISTBOX_CHOICES, 6961 adapter.getCount(), 0, 6962 listView.getCheckedItemPositions()); 6963 }}); 6964 b.setNegativeButton(android.R.string.cancel, 6965 new DialogInterface.OnClickListener() { 6966 public void onClick(DialogInterface dialog, int which) { 6967 mWebViewCore.sendMessage( 6968 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6969 }}); 6970 } 6971 final AlertDialog dialog = b.create(); 6972 listView.setAdapter(adapter); 6973 listView.setFocusableInTouchMode(true); 6974 // There is a bug (1250103) where the checks in a ListView with 6975 // multiple items selected are associated with the positions, not 6976 // the ids, so the items do not properly retain their checks when 6977 // filtered. Do not allow filtering on multiple lists until 6978 // that bug is fixed. 6979 6980 listView.setTextFilterEnabled(!mMultiple); 6981 if (mMultiple) { 6982 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 6983 int length = mSelectedArray.length; 6984 for (int i = 0; i < length; i++) { 6985 listView.setItemChecked(mSelectedArray[i], true); 6986 } 6987 } else { 6988 listView.setOnItemClickListener(new OnItemClickListener() { 6989 public void onItemClick(AdapterView parent, View v, 6990 int position, long id) { 6991 mWebViewCore.sendMessage( 6992 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 6993 dialog.dismiss(); 6994 } 6995 }); 6996 if (mSelection != -1) { 6997 listView.setSelection(mSelection); 6998 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 6999 listView.setItemChecked(mSelection, true); 7000 DataSetObserver observer = new SingleDataSetObserver( 7001 adapter.getItemId(mSelection), listView, adapter); 7002 adapter.registerDataSetObserver(observer); 7003 } 7004 } 7005 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 7006 public void onCancel(DialogInterface dialog) { 7007 mWebViewCore.sendMessage( 7008 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7009 } 7010 }); 7011 dialog.show(); 7012 } 7013 } 7014 7015 /* 7016 * Request a dropdown menu for a listbox with multiple selection. 7017 * 7018 * @param array Labels for the listbox. 7019 * @param enabledArray State for each element in the list. See static 7020 * integers in Container class. 7021 * @param selectedArray Which positions are initally selected. 7022 */ 7023 void requestListBox(String[] array, int[] enabledArray, int[] 7024 selectedArray) { 7025 mPrivateHandler.post( 7026 new InvokeListBox(array, enabledArray, selectedArray)); 7027 } 7028 7029 private void updateZoomRange(WebViewCore.RestoreState restoreState, 7030 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 7031 if (restoreState.mMinScale == 0) { 7032 if (restoreState.mMobileSite) { 7033 if (minPrefWidth > Math.max(0, viewWidth)) { 7034 mMinZoomScale = (float) viewWidth / minPrefWidth; 7035 mMinZoomScaleFixed = false; 7036 if (updateZoomOverview) { 7037 WebSettings settings = getSettings(); 7038 mInZoomOverview = settings.getUseWideViewPort() && 7039 settings.getLoadWithOverviewMode(); 7040 } 7041 } else { 7042 mMinZoomScale = restoreState.mDefaultScale; 7043 mMinZoomScaleFixed = true; 7044 } 7045 } else { 7046 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 7047 mMinZoomScaleFixed = false; 7048 } 7049 } else { 7050 mMinZoomScale = restoreState.mMinScale; 7051 mMinZoomScaleFixed = true; 7052 } 7053 if (restoreState.mMaxScale == 0) { 7054 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 7055 } else { 7056 mMaxZoomScale = restoreState.mMaxScale; 7057 } 7058 } 7059 7060 /* 7061 * Request a dropdown menu for a listbox with single selection or a single 7062 * <select> element. 7063 * 7064 * @param array Labels for the listbox. 7065 * @param enabledArray State for each element in the list. See static 7066 * integers in Container class. 7067 * @param selection Which position is initally selected. 7068 */ 7069 void requestListBox(String[] array, int[] enabledArray, int selection) { 7070 mPrivateHandler.post( 7071 new InvokeListBox(array, enabledArray, selection)); 7072 } 7073 7074 // called by JNI 7075 private void sendMoveFocus(int frame, int node) { 7076 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7077 new WebViewCore.CursorData(frame, node, 0, 0)); 7078 } 7079 7080 // called by JNI 7081 private void sendMoveMouse(int frame, int node, int x, int y) { 7082 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7083 new WebViewCore.CursorData(frame, node, x, y)); 7084 } 7085 7086 /* 7087 * Send a mouse move event to the webcore thread. 7088 * 7089 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7090 * which wants key events, but it is not the focus. This 7091 * will make the visual appear as though nothing is in 7092 * focus. Remove the WebTextView, if present, and stop 7093 * drawing the blinking caret. 7094 * called by JNI 7095 */ 7096 private void sendMoveMouseIfLatest(boolean removeFocus) { 7097 if (removeFocus) { 7098 clearTextEntry(true); 7099 } 7100 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7101 cursorData()); 7102 } 7103 7104 // called by JNI 7105 private void sendMotionUp(int touchGeneration, 7106 int frame, int node, int x, int y) { 7107 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7108 touchUpData.mMoveGeneration = touchGeneration; 7109 touchUpData.mFrame = frame; 7110 touchUpData.mNode = node; 7111 touchUpData.mX = x; 7112 touchUpData.mY = y; 7113 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7114 } 7115 7116 7117 private int getScaledMaxXScroll() { 7118 int width; 7119 if (mHeightCanMeasure == false) { 7120 width = getViewWidth() / 4; 7121 } else { 7122 Rect visRect = new Rect(); 7123 calcOurVisibleRect(visRect); 7124 width = visRect.width() / 2; 7125 } 7126 // FIXME the divisor should be retrieved from somewhere 7127 return viewToContentX(width); 7128 } 7129 7130 private int getScaledMaxYScroll() { 7131 int height; 7132 if (mHeightCanMeasure == false) { 7133 height = getViewHeight() / 4; 7134 } else { 7135 Rect visRect = new Rect(); 7136 calcOurVisibleRect(visRect); 7137 height = visRect.height() / 2; 7138 } 7139 // FIXME the divisor should be retrieved from somewhere 7140 // the closest thing today is hard-coded into ScrollView.java 7141 // (from ScrollView.java, line 363) int maxJump = height/2; 7142 return Math.round(height * mInvActualScale); 7143 } 7144 7145 /** 7146 * Called by JNI to invalidate view 7147 */ 7148 private void viewInvalidate() { 7149 invalidate(); 7150 } 7151 7152 /** 7153 * Pass the key directly to the page. This assumes that 7154 * nativePageShouldHandleShiftAndArrows() returned true. 7155 */ 7156 private void letPageHandleNavKey(int keyCode, long time, boolean down) { 7157 int keyEventAction; 7158 int eventHubAction; 7159 if (down) { 7160 keyEventAction = KeyEvent.ACTION_DOWN; 7161 eventHubAction = EventHub.KEY_DOWN; 7162 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7163 } else { 7164 keyEventAction = KeyEvent.ACTION_UP; 7165 eventHubAction = EventHub.KEY_UP; 7166 } 7167 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7168 1, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 7169 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 7170 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 7171 , 0, 0, 0); 7172 mWebViewCore.sendMessage(eventHubAction, event); 7173 } 7174 7175 // return true if the key was handled 7176 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7177 long time) { 7178 if (mNativeClass == 0) { 7179 return false; 7180 } 7181 mLastCursorTime = time; 7182 mLastCursorBounds = nativeGetCursorRingBounds(); 7183 boolean keyHandled 7184 = nativeMoveCursor(keyCode, count, noScroll) == false; 7185 if (DebugFlags.WEB_VIEW) { 7186 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7187 + " mLastCursorTime=" + mLastCursorTime 7188 + " handled=" + keyHandled); 7189 } 7190 if (keyHandled == false || mHeightCanMeasure == false) { 7191 return keyHandled; 7192 } 7193 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7194 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7195 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7196 Rect visRect = new Rect(); 7197 calcOurVisibleRect(visRect); 7198 Rect outset = new Rect(visRect); 7199 int maxXScroll = visRect.width() / 2; 7200 int maxYScroll = visRect.height() / 2; 7201 outset.inset(-maxXScroll, -maxYScroll); 7202 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7203 return keyHandled; 7204 } 7205 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7206 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7207 maxXScroll); 7208 if (maxH > 0) { 7209 pinScrollBy(maxH, 0, true, 0); 7210 } else { 7211 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7212 -maxXScroll); 7213 if (maxH < 0) { 7214 pinScrollBy(maxH, 0, true, 0); 7215 } 7216 } 7217 if (mLastCursorBounds.isEmpty()) return keyHandled; 7218 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7219 return keyHandled; 7220 } 7221 if (DebugFlags.WEB_VIEW) { 7222 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7223 + contentCursorRingBounds); 7224 } 7225 requestRectangleOnScreen(viewCursorRingBounds); 7226 mUserScroll = true; 7227 return keyHandled; 7228 } 7229 7230 /** 7231 * Set the background color. It's white by default. Pass 7232 * zero to make the view transparent. 7233 * @param color the ARGB color described by Color.java 7234 */ 7235 public void setBackgroundColor(int color) { 7236 mBackgroundColor = color; 7237 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7238 } 7239 7240 public void debugDump() { 7241 nativeDebugDump(); 7242 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7243 } 7244 7245 /** 7246 * Draw the HTML page into the specified canvas. This call ignores any 7247 * view-specific zoom, scroll offset, or other changes. It does not draw 7248 * any view-specific chrome, such as progress or URL bars. 7249 * 7250 * @hide only needs to be accessible to Browser and testing 7251 */ 7252 public void drawPage(Canvas canvas) { 7253 mWebViewCore.drawContentPicture(canvas, 0, false, false); 7254 } 7255 7256 /** 7257 * Set the time to wait between passing touches to WebCore. See also the 7258 * TOUCH_SENT_INTERVAL member for further discussion. 7259 * 7260 * @hide This is only used by the DRT test application. 7261 */ 7262 public void setTouchInterval(int interval) { 7263 mCurrentTouchInterval = interval; 7264 } 7265 7266 /** 7267 * Update our cache with updatedText. 7268 * @param updatedText The new text to put in our cache. 7269 */ 7270 /* package */ void updateCachedTextfield(String updatedText) { 7271 // Also place our generation number so that when we look at the cache 7272 // we recognize that it is up to date. 7273 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7274 } 7275 7276 private native int nativeCacheHitFramePointer(); 7277 private native Rect nativeCacheHitNodeBounds(); 7278 private native int nativeCacheHitNodePointer(); 7279 /* package */ native void nativeClearCursor(); 7280 private native void nativeCreate(int ptr); 7281 private native int nativeCursorFramePointer(); 7282 private native Rect nativeCursorNodeBounds(); 7283 private native int nativeCursorNodePointer(); 7284 /* package */ native boolean nativeCursorMatchesFocus(); 7285 private native boolean nativeCursorIntersects(Rect visibleRect); 7286 private native boolean nativeCursorIsAnchor(); 7287 private native boolean nativeCursorIsTextInput(); 7288 private native Point nativeCursorPosition(); 7289 private native String nativeCursorText(); 7290 /** 7291 * Returns true if the native cursor node says it wants to handle key events 7292 * (ala plugins). This can only be called if mNativeClass is non-zero! 7293 */ 7294 private native boolean nativeCursorWantsKeyEvents(); 7295 private native void nativeDebugDump(); 7296 private native void nativeDestroy(); 7297 private native boolean nativeEvaluateLayersAnimations(); 7298 private native void nativeDrawExtras(Canvas canvas, int extra); 7299 private native void nativeDumpDisplayTree(String urlOrNull); 7300 private native int nativeFindAll(String findLower, String findUpper); 7301 private native void nativeFindNext(boolean forward); 7302 /* package */ native int nativeFocusCandidateFramePointer(); 7303 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 7304 /* package */ native boolean nativeFocusCandidateIsPassword(); 7305 private native boolean nativeFocusCandidateIsRtlText(); 7306 private native boolean nativeFocusCandidateIsTextInput(); 7307 /* package */ native int nativeFocusCandidateMaxLength(); 7308 /* package */ native String nativeFocusCandidateName(); 7309 private native Rect nativeFocusCandidateNodeBounds(); 7310 /* package */ native int nativeFocusCandidatePointer(); 7311 private native String nativeFocusCandidateText(); 7312 private native int nativeFocusCandidateTextSize(); 7313 /** 7314 * Returns an integer corresponding to WebView.cpp::type. 7315 * See WebTextView.setType() 7316 */ 7317 private native int nativeFocusCandidateType(); 7318 private native boolean nativeFocusIsPlugin(); 7319 private native Rect nativeFocusNodeBounds(); 7320 /* package */ native int nativeFocusNodePointer(); 7321 private native Rect nativeGetCursorRingBounds(); 7322 private native String nativeGetSelection(); 7323 private native boolean nativeHasCursorNode(); 7324 private native boolean nativeHasFocusNode(); 7325 private native void nativeHideCursor(); 7326 private native String nativeImageURI(int x, int y); 7327 private native void nativeInstrumentReport(); 7328 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7329 // return true if the page has been scrolled 7330 private native boolean nativeMotionUp(int x, int y, int slop); 7331 // returns false if it handled the key 7332 private native boolean nativeMoveCursor(int keyCode, int count, 7333 boolean noScroll); 7334 private native int nativeMoveGeneration(); 7335 private native void nativeMoveSelection(int x, int y, 7336 boolean extendSelection); 7337 /** 7338 * @return true if the page should get the shift and arrow keys, rather 7339 * than select text/navigation. 7340 * 7341 * If the focus is a plugin, or if the focus and cursor match and are 7342 * a contentEditable element, then the page should handle these keys. 7343 */ 7344 private native boolean nativePageShouldHandleShiftAndArrows(); 7345 private native boolean nativePointInNavCache(int x, int y, int slop); 7346 // Like many other of our native methods, you must make sure that 7347 // mNativeClass is not null before calling this method. 7348 private native void nativeRecordButtons(boolean focused, 7349 boolean pressed, boolean invalidate); 7350 private native void nativeSelectBestAt(Rect rect); 7351 private native int nativeFindIndex(); 7352 private native void nativeSetFindIsEmpty(); 7353 private native void nativeSetFindIsUp(boolean isUp); 7354 private native void nativeSetFollowedLink(boolean followed); 7355 private native void nativeSetHeightCanMeasure(boolean measure); 7356 private native void nativeSetRootLayer(int layer); 7357 private native void nativeSetSelectionPointer(boolean set, 7358 float scale, int x, int y, boolean extendSelection); 7359 private native void nativeSetSelectionRegion(boolean set); 7360 private native Rect nativeSubtractLayers(Rect content); 7361 private native int nativeTextGeneration(); 7362 // Never call this version except by updateCachedTextfield(String) - 7363 // we always want to pass in our generation number. 7364 private native void nativeUpdateCachedTextfield(String updatedText, 7365 int generation); 7366 // return NO_LEFTEDGE means failure. 7367 private static final int NO_LEFTEDGE = -1; 7368 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 7369} 7370