WebView.java revision 0653d22f6279a81cbad27d8b0d5729f43ae1d66e
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.Paint; 34import android.graphics.Picture; 35import android.graphics.Point; 36import android.graphics.Rect; 37import android.graphics.Region; 38import android.graphics.Shader; 39import android.graphics.drawable.Drawable; 40import android.net.Uri; 41import android.net.http.SslCertificate; 42import android.os.Bundle; 43import android.os.Handler; 44import android.os.Message; 45import android.os.ServiceManager; 46import android.os.SystemClock; 47import android.text.IClipboard; 48import android.text.Selection; 49import android.text.Spannable; 50import android.util.AttributeSet; 51import android.util.EventLog; 52import android.util.Log; 53import android.util.TypedValue; 54import android.view.Gravity; 55import android.view.KeyEvent; 56import android.view.LayoutInflater; 57import android.view.MotionEvent; 58import android.view.ScaleGestureDetector; 59import android.view.SoundEffectConstants; 60import android.view.VelocityTracker; 61import android.view.View; 62import android.view.ViewConfiguration; 63import android.view.ViewGroup; 64import android.view.ViewTreeObserver; 65import android.view.animation.AlphaAnimation; 66import android.view.inputmethod.EditorInfo; 67import android.view.inputmethod.InputConnection; 68import android.view.inputmethod.InputMethodManager; 69import android.webkit.WebTextView.AutoCompleteAdapter; 70import android.webkit.WebViewCore.EventHub; 71import android.webkit.WebViewCore.TouchEventData; 72import android.widget.AbsoluteLayout; 73import android.widget.Adapter; 74import android.widget.AdapterView; 75import android.widget.ArrayAdapter; 76import android.widget.CheckedTextView; 77import android.widget.FrameLayout; 78import android.widget.LinearLayout; 79import android.widget.ListView; 80import android.widget.Scroller; 81import android.widget.Toast; 82import android.widget.ZoomButtonsController; 83import android.widget.ZoomControls; 84import android.widget.AdapterView.OnItemClickListener; 85 86import java.io.File; 87import java.io.FileInputStream; 88import java.io.FileNotFoundException; 89import java.io.FileOutputStream; 90import java.io.IOException; 91import java.net.URLDecoder; 92import java.util.ArrayList; 93import java.util.HashMap; 94import java.util.List; 95import java.util.Map; 96import java.util.Set; 97 98import junit.framework.Assert; 99 100/** 101 * <p>A View that displays web pages. This class is the basis upon which you 102 * can roll your own web browser or simply display some online content within your Activity. 103 * It uses the WebKit rendering engine to display 104 * web pages and includes methods to navigate forward and backward 105 * through a history, zoom in and out, perform text searches and more.</p> 106 * <p>To enable the built-in zoom, set 107 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 108 * (introduced in API version 3). 109 * <p>Note that, in order for your Activity to access the Internet and load web pages 110 * in a WebView, you must add the <var>INTERNET</var> permissions to your 111 * Android Manifest file:</p> 112 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 113 * 114 * <p>This must be a child of the <code><manifest></code> element.</p> 115 * 116 * <h3>Basic usage</h3> 117 * 118 * <p>By default, a WebView provides no browser-like widgets, does not 119 * enable JavaScript and errors will be ignored. If your goal is only 120 * to display some HTML as a part of your UI, this is probably fine; 121 * the user won't need to interact with the web page beyond reading 122 * it, and the web page won't need to interact with the user. If you 123 * actually want a fully blown web browser, then you probably want to 124 * invoke the Browser application with your URL rather than show it 125 * with a WebView. See {@link android.content.Intent} for more information.</p> 126 * 127 * <pre class="prettyprint"> 128 * WebView webview = new WebView(this); 129 * setContentView(webview); 130 * 131 * // Simplest usage: note that an exception will NOT be thrown 132 * // if there is an error loading this page (see below). 133 * webview.loadUrl("http://slashdot.org/"); 134 * 135 * // Of course you can also load from any string: 136 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 137 * webview.loadData(summary, "text/html", "utf-8"); 138 * // ... although note that there are restrictions on what this HTML can do. 139 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 140 * </pre> 141 * 142 * <p>A WebView has several customization points where you can add your 143 * own behavior. These are:</p> 144 * 145 * <ul> 146 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 147 * This class is called when something that might impact a 148 * browser UI happens, for instance, progress updates and 149 * JavaScript alerts are sent here. 150 * </li> 151 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 152 * It will be called when things happen that impact the 153 * rendering of the content, eg, errors or form submissions. You 154 * can also intercept URL loading here.</li> 155 * <li>Via the {@link android.webkit.WebSettings} class, which contains 156 * miscellaneous configuration. </li> 157 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 158 * This lets you bind Java objects into the WebView so they can be 159 * controlled from the web pages JavaScript.</li> 160 * </ul> 161 * 162 * <p>Here's a more complicated example, showing error handling, 163 * settings, and progress notification:</p> 164 * 165 * <pre class="prettyprint"> 166 * // Let's display the progress in the activity title bar, like the 167 * // browser app does. 168 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 169 * 170 * webview.getSettings().setJavaScriptEnabled(true); 171 * 172 * final Activity activity = this; 173 * webview.setWebChromeClient(new WebChromeClient() { 174 * public void onProgressChanged(WebView view, int progress) { 175 * // Activities and WebViews measure progress with different scales. 176 * // The progress meter will automatically disappear when we reach 100% 177 * activity.setProgress(progress * 1000); 178 * } 179 * }); 180 * webview.setWebViewClient(new WebViewClient() { 181 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 182 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 183 * } 184 * }); 185 * 186 * webview.loadUrl("http://slashdot.org/"); 187 * </pre> 188 * 189 * <h3>Cookie and window management</h3> 190 * 191 * <p>For obvious security reasons, your application has its own 192 * cache, cookie store etc - it does not share the Browser 193 * applications data. Cookies are managed on a separate thread, so 194 * operations like index building don't block the UI 195 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 196 * if you want to use cookies in your application. 197 * </p> 198 * 199 * <p>By default, requests by the HTML to open new windows are 200 * ignored. This is true whether they be opened by JavaScript or by 201 * the target attribute on a link. You can customize your 202 * WebChromeClient to provide your own behaviour for opening multiple windows, 203 * and render them in whatever manner you want.</p> 204 * 205 * <p>Standard behavior for an Activity is to be destroyed and 206 * recreated when the devices orientation is changed. This will cause 207 * the WebView to reload the current page. If you don't want that, you 208 * can set your Activity to handle the orientation and keyboardHidden 209 * changes, and then just leave the WebView alone. It'll automatically 210 * re-orient itself as appropriate.</p> 211 */ 212@Widget 213public class WebView extends AbsoluteLayout 214 implements ViewTreeObserver.OnGlobalFocusChangeListener, 215 ViewGroup.OnHierarchyChangeListener { 216 217 // enable debug output for drag trackers 218 private static final boolean DEBUG_DRAG_TRACKER = false; 219 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 220 // the screen all-the-time. Good for profiling our drawing code 221 static private final boolean AUTO_REDRAW_HACK = false; 222 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 223 private boolean mAutoRedraw; 224 225 static final String LOGTAG = "webview"; 226 227 private static class ExtendedZoomControls extends FrameLayout { 228 public ExtendedZoomControls(Context context, AttributeSet attrs) { 229 super(context, attrs); 230 LayoutInflater inflater = (LayoutInflater) 231 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 232 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 233 mPlusMinusZoomControls = (ZoomControls) findViewById( 234 com.android.internal.R.id.zoomControls); 235 findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( 236 View.GONE); 237 } 238 239 public void show(boolean showZoom, boolean canZoomOut) { 240 mPlusMinusZoomControls.setVisibility( 241 showZoom ? View.VISIBLE : View.GONE); 242 fade(View.VISIBLE, 0.0f, 1.0f); 243 } 244 245 public void hide() { 246 fade(View.GONE, 1.0f, 0.0f); 247 } 248 249 private void fade(int visibility, float startAlpha, float endAlpha) { 250 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 251 anim.setDuration(500); 252 startAnimation(anim); 253 setVisibility(visibility); 254 } 255 256 public boolean hasFocus() { 257 return mPlusMinusZoomControls.hasFocus(); 258 } 259 260 public void setOnZoomInClickListener(OnClickListener listener) { 261 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 262 } 263 264 public void setOnZoomOutClickListener(OnClickListener listener) { 265 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 266 } 267 268 ZoomControls mPlusMinusZoomControls; 269 } 270 271 /** 272 * Transportation object for returning WebView across thread boundaries. 273 */ 274 public class WebViewTransport { 275 private WebView mWebview; 276 277 /** 278 * Set the WebView to the transportation object. 279 * @param webview The WebView to transport. 280 */ 281 public synchronized void setWebView(WebView webview) { 282 mWebview = webview; 283 } 284 285 /** 286 * Return the WebView object. 287 * @return WebView The transported WebView object. 288 */ 289 public synchronized WebView getWebView() { 290 return mWebview; 291 } 292 } 293 294 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 295 private final CallbackProxy mCallbackProxy; 296 297 private final WebViewDatabase mDatabase; 298 299 // SSL certificate for the main top-level page (if secure) 300 private SslCertificate mCertificate; 301 302 // Native WebView pointer that is 0 until the native object has been 303 // created. 304 private int mNativeClass; 305 // This would be final but it needs to be set to null when the WebView is 306 // destroyed. 307 private WebViewCore mWebViewCore; 308 // Handler for dispatching UI messages. 309 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 310 private WebTextView mWebTextView; 311 // Used to ignore changes to webkit text that arrives to the UI side after 312 // more key events. 313 private int mTextGeneration; 314 315 // Used by WebViewCore to create child views. 316 /* package */ final ViewManager mViewManager; 317 318 // Used to display in full screen mode 319 PluginFullScreenHolder mFullScreenHolder; 320 321 /** 322 * Position of the last touch event. 323 */ 324 private float mLastTouchX; 325 private float mLastTouchY; 326 327 /** 328 * Time of the last touch event. 329 */ 330 private long mLastTouchTime; 331 332 /** 333 * Time of the last time sending touch event to WebViewCore 334 */ 335 private long mLastSentTouchTime; 336 337 /** 338 * The minimum elapsed time before sending another ACTION_MOVE event to 339 * WebViewCore. This really should be tuned for each type of the devices. 340 * For example in Google Map api test case, it takes Dream device at least 341 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 342 * triggering the layout and drawing the picture. While the same process 343 * takes 60+ms on the current high speed device. If we make 344 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 345 * to WebViewCore queue and the real layout and draw events will be pushed 346 * to further, which slows down the refresh rate. Choose 50 to favor the 347 * current high speed devices. For Dream like devices, 100 is a better 348 * choice. Maybe make this in the buildspec later. 349 */ 350 private static final int TOUCH_SENT_INTERVAL = 50; 351 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 352 353 /** 354 * Helper class to get velocity for fling 355 */ 356 VelocityTracker mVelocityTracker; 357 private int mMaximumFling; 358 private float mLastVelocity; 359 private float mLastVelX; 360 private float mLastVelY; 361 362 /** 363 * Touch mode 364 */ 365 private int mTouchMode = TOUCH_DONE_MODE; 366 private static final int TOUCH_INIT_MODE = 1; 367 private static final int TOUCH_DRAG_START_MODE = 2; 368 private static final int TOUCH_DRAG_MODE = 3; 369 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 370 private static final int TOUCH_SHORTPRESS_MODE = 5; 371 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 372 private static final int TOUCH_DONE_MODE = 7; 373 private static final int TOUCH_SELECT_MODE = 8; 374 private static final int TOUCH_PINCH_DRAG = 9; 375 376 // Whether to forward the touch events to WebCore 377 private boolean mForwardTouchEvents = false; 378 379 // Whether to prevent default during touch. The initial value depends on 380 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 381 // for touch down. Otherwise UI will wait for the answer of the first 382 // confirmed move before taking over the control. 383 private static final int PREVENT_DEFAULT_NO = 0; 384 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 385 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 386 private static final int PREVENT_DEFAULT_YES = 3; 387 private static final int PREVENT_DEFAULT_IGNORE = 4; 388 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 389 390 // true when the touch movement exceeds the slop 391 private boolean mConfirmMove; 392 393 // if true, touch events will be first processed by WebCore, if prevent 394 // default is not set, the UI will continue handle them. 395 private boolean mDeferTouchProcess; 396 397 // to avoid interfering with the current touch events, track them 398 // separately. Currently no snapping or fling in the deferred process mode 399 private int mDeferTouchMode = TOUCH_DONE_MODE; 400 private float mLastDeferTouchX; 401 private float mLastDeferTouchY; 402 403 // To keep track of whether the current drag was initiated by a WebTextView, 404 // so that we know not to hide the cursor 405 boolean mDragFromTextInput; 406 407 // Whether or not to draw the cursor ring. 408 private boolean mDrawCursorRing = true; 409 410 // true if onPause has been called (and not onResume) 411 private boolean mIsPaused; 412 413 // true if, during a transition to a new page, we're delaying 414 // deleting a root layer until there's something to draw of the new page. 415 private boolean mDelayedDeleteRootLayer; 416 417 /** 418 * Customizable constant 419 */ 420 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 421 private int mTouchSlopSquare; 422 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 423 private int mDoubleTapSlopSquare; 424 // pre-computed density adjusted navigation slop 425 private int mNavSlop; 426 // This should be ViewConfiguration.getTapTimeout() 427 // But system time out is 100ms, which is too short for the browser. 428 // In the browser, if it switches out of tap too soon, jump tap won't work. 429 private static final int TAP_TIMEOUT = 200; 430 // This should be ViewConfiguration.getLongPressTimeout() 431 // But system time out is 500ms, which is too short for the browser. 432 // With a short timeout, it's difficult to treat trigger a short press. 433 private static final int LONG_PRESS_TIMEOUT = 1000; 434 // needed to avoid flinging after a pause of no movement 435 private static final int MIN_FLING_TIME = 250; 436 // draw unfiltered after drag is held without movement 437 private static final int MOTIONLESS_TIME = 100; 438 // The time that the Zoom Controls are visible before fading away 439 private static final long ZOOM_CONTROLS_TIMEOUT = 440 ViewConfiguration.getZoomControlsTimeout(); 441 // The amount of content to overlap between two screens when going through 442 // pages with the space bar, in pixels. 443 private static final int PAGE_SCROLL_OVERLAP = 24; 444 445 /** 446 * These prevent calling requestLayout if either dimension is fixed. This 447 * depends on the layout parameters and the measure specs. 448 */ 449 boolean mWidthCanMeasure; 450 boolean mHeightCanMeasure; 451 452 // Remember the last dimensions we sent to the native side so we can avoid 453 // sending the same dimensions more than once. 454 int mLastWidthSent; 455 int mLastHeightSent; 456 457 private int mContentWidth; // cache of value from WebViewCore 458 private int mContentHeight; // cache of value from WebViewCore 459 460 // Need to have the separate control for horizontal and vertical scrollbar 461 // style than the View's single scrollbar style 462 private boolean mOverlayHorizontalScrollbar = true; 463 private boolean mOverlayVerticalScrollbar = false; 464 465 // our standard speed. this way small distances will be traversed in less 466 // time than large distances, but we cap the duration, so that very large 467 // distances won't take too long to get there. 468 private static final int STD_SPEED = 480; // pixels per second 469 // time for the longest scroll animation 470 private static final int MAX_DURATION = 750; // milliseconds 471 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 472 private Scroller mScroller; 473 474 private boolean mWrapContent; 475 private static final int MOTIONLESS_FALSE = 0; 476 private static final int MOTIONLESS_PENDING = 1; 477 private static final int MOTIONLESS_TRUE = 2; 478 private static final int MOTIONLESS_IGNORE = 3; 479 private int mHeldMotionless; 480 481 // whether support multi-touch 482 private boolean mSupportMultiTouch; 483 // use the framework's ScaleGestureDetector to handle multi-touch 484 private ScaleGestureDetector mScaleDetector; 485 486 // the anchor point in the document space where VIEW_SIZE_CHANGED should 487 // apply to 488 private int mAnchorX; 489 private int mAnchorY; 490 491 /* 492 * Private message ids 493 */ 494 private static final int REMEMBER_PASSWORD = 1; 495 private static final int NEVER_REMEMBER_PASSWORD = 2; 496 private static final int SWITCH_TO_SHORTPRESS = 3; 497 private static final int SWITCH_TO_LONGPRESS = 4; 498 private static final int RELEASE_SINGLE_TAP = 5; 499 private static final int REQUEST_FORM_DATA = 6; 500 private static final int RESUME_WEBCORE_PRIORITY = 7; 501 private static final int DRAG_HELD_MOTIONLESS = 8; 502 private static final int AWAKEN_SCROLL_BARS = 9; 503 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 504 505 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 506 private static final int LAST_PRIVATE_MSG_ID = PREVENT_DEFAULT_TIMEOUT; 507 508 /* 509 * Package message ids 510 */ 511 //! arg1=x, arg2=y 512 static final int SCROLL_TO_MSG_ID = 101; 513 static final int SCROLL_BY_MSG_ID = 102; 514 //! arg1=x, arg2=y 515 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 516 //! arg1=x, arg2=y 517 static final int SYNC_SCROLL_TO_MSG_ID = 104; 518 static final int NEW_PICTURE_MSG_ID = 105; 519 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 520 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 521 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 522 static final int UPDATE_ZOOM_RANGE = 109; 523 static final int MOVE_OUT_OF_PLUGIN = 110; 524 static final int CLEAR_TEXT_ENTRY = 111; 525 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 526 static final int SHOW_RECT_MSG_ID = 113; 527 static final int LONG_PRESS_CENTER = 114; 528 static final int PREVENT_TOUCH_ID = 115; 529 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 530 // obj=Rect in doc coordinates 531 static final int INVAL_RECT_MSG_ID = 117; 532 static final int REQUEST_KEYBOARD = 118; 533 static final int DO_MOTION_UP = 119; 534 static final int SHOW_FULLSCREEN = 120; 535 static final int HIDE_FULLSCREEN = 121; 536 static final int DOM_FOCUS_CHANGED = 122; 537 static final int IMMEDIATE_REPAINT_MSG_ID = 123; 538 static final int SET_ROOT_LAYER_MSG_ID = 124; 539 static final int RETURN_LABEL = 125; 540 static final int FIND_AGAIN = 126; 541 static final int CENTER_FIT_RECT = 127; 542 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 543 static final int SET_SCROLLBAR_MODES = 129; 544 545 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 546 private static final int LAST_PACKAGE_MSG_ID = SET_SCROLLBAR_MODES; 547 548 static final String[] HandlerPrivateDebugString = { 549 "REMEMBER_PASSWORD", // = 1; 550 "NEVER_REMEMBER_PASSWORD", // = 2; 551 "SWITCH_TO_SHORTPRESS", // = 3; 552 "SWITCH_TO_LONGPRESS", // = 4; 553 "RELEASE_SINGLE_TAP", // = 5; 554 "REQUEST_FORM_DATA", // = 6; 555 "RESUME_WEBCORE_PRIORITY", // = 7; 556 "DRAG_HELD_MOTIONLESS", // = 8; 557 "AWAKEN_SCROLL_BARS", // = 9; 558 "PREVENT_DEFAULT_TIMEOUT" // = 10; 559 }; 560 561 static final String[] HandlerPackageDebugString = { 562 "SCROLL_TO_MSG_ID", // = 101; 563 "SCROLL_BY_MSG_ID", // = 102; 564 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 565 "SYNC_SCROLL_TO_MSG_ID", // = 104; 566 "NEW_PICTURE_MSG_ID", // = 105; 567 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 568 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 569 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 570 "UPDATE_ZOOM_RANGE", // = 109; 571 "MOVE_OUT_OF_PLUGIN", // = 110; 572 "CLEAR_TEXT_ENTRY", // = 111; 573 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 574 "SHOW_RECT_MSG_ID", // = 113; 575 "LONG_PRESS_CENTER", // = 114; 576 "PREVENT_TOUCH_ID", // = 115; 577 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 578 "INVAL_RECT_MSG_ID", // = 117; 579 "REQUEST_KEYBOARD", // = 118; 580 "DO_MOTION_UP", // = 119; 581 "SHOW_FULLSCREEN", // = 120; 582 "HIDE_FULLSCREEN", // = 121; 583 "DOM_FOCUS_CHANGED", // = 122; 584 "IMMEDIATE_REPAINT_MSG_ID", // = 123; 585 "SET_ROOT_LAYER_MSG_ID", // = 124; 586 "RETURN_LABEL", // = 125; 587 "FIND_AGAIN", // = 126; 588 "CENTER_FIT_RECT", // = 127; 589 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 590 "SET_SCROLLBAR_MODES" // = 129; 591 }; 592 593 // If the site doesn't use the viewport meta tag to specify the viewport, 594 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 595 static final int DEFAULT_VIEWPORT_WIDTH = 800; 596 597 // normally we try to fit the content to the minimum preferred width 598 // calculated by the Webkit. To avoid the bad behavior when some site's 599 // minimum preferred width keeps growing when changing the viewport width or 600 // the minimum preferred width is huge, an upper limit is needed. 601 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 602 603 // default scale limit. Depending on the display density 604 private static float DEFAULT_MAX_ZOOM_SCALE; 605 private static float DEFAULT_MIN_ZOOM_SCALE; 606 // scale limit, which can be set through viewport meta tag in the web page 607 private float mMaxZoomScale; 608 private float mMinZoomScale; 609 private boolean mMinZoomScaleFixed = true; 610 611 // initial scale in percent. 0 means using default. 612 private int mInitialScaleInPercent = 0; 613 614 // while in the zoom overview mode, the page's width is fully fit to the 615 // current window. The page is alive, in another words, you can click to 616 // follow the links. Double tap will toggle between zoom overview mode and 617 // the last zoom scale. 618 boolean mInZoomOverview = false; 619 620 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 621 // engadget always have wider mContentWidth no matter what viewport size is. 622 int mZoomOverviewWidth = DEFAULT_VIEWPORT_WIDTH; 623 float mTextWrapScale; 624 625 // default scale. Depending on the display density. 626 static int DEFAULT_SCALE_PERCENT; 627 private float mDefaultScale; 628 629 private static float MINIMUM_SCALE_INCREMENT = 0.01f; 630 631 // set to true temporarily during ScaleGesture triggered zoom 632 private boolean mPreviewZoomOnly = false; 633 634 // computed scale and inverse, from mZoomWidth. 635 private float mActualScale; 636 private float mInvActualScale; 637 // if this is non-zero, it is used on drawing rather than mActualScale 638 private float mZoomScale; 639 private float mInvInitialZoomScale; 640 private float mInvFinalZoomScale; 641 private int mInitialScrollX; 642 private int mInitialScrollY; 643 private long mZoomStart; 644 private static final int ZOOM_ANIMATION_LENGTH = 500; 645 646 private boolean mUserScroll = false; 647 648 private int mSnapScrollMode = SNAP_NONE; 649 private static final int SNAP_NONE = 0; 650 private static final int SNAP_LOCK = 1; // not a separate state 651 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 652 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 653 private boolean mSnapPositive; 654 655 // keep these in sync with their counterparts in WebView.cpp 656 private static final int DRAW_EXTRAS_NONE = 0; 657 private static final int DRAW_EXTRAS_FIND = 1; 658 private static final int DRAW_EXTRAS_SELECTION = 2; 659 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 660 661 // keep this in sync with WebCore:ScrollbarMode in WebKit 662 private static final int SCROLLBAR_AUTO = 0; 663 private static final int SCROLLBAR_ALWAYSOFF = 1; 664 // as we auto fade scrollbar, this is ignored. 665 private static final int SCROLLBAR_ALWAYSON = 2; 666 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 667 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 668 669 // Used to match key downs and key ups 670 private boolean mGotKeyDown; 671 672 /* package */ static boolean mLogEvent = true; 673 674 // for event log 675 private long mLastTouchUpTime = 0; 676 677 /** 678 * URI scheme for telephone number 679 */ 680 public static final String SCHEME_TEL = "tel:"; 681 /** 682 * URI scheme for email address 683 */ 684 public static final String SCHEME_MAILTO = "mailto:"; 685 /** 686 * URI scheme for map address 687 */ 688 public static final String SCHEME_GEO = "geo:0,0?q="; 689 690 private int mBackgroundColor = Color.WHITE; 691 692 // Used to notify listeners of a new picture. 693 private PictureListener mPictureListener; 694 /** 695 * Interface to listen for new pictures as they change. 696 */ 697 public interface PictureListener { 698 /** 699 * Notify the listener that the picture has changed. 700 * @param view The WebView that owns the picture. 701 * @param picture The new picture. 702 */ 703 public void onNewPicture(WebView view, Picture picture); 704 } 705 706 // FIXME: Want to make this public, but need to change the API file. 707 public /*static*/ class HitTestResult { 708 /** 709 * Default HitTestResult, where the target is unknown 710 */ 711 public static final int UNKNOWN_TYPE = 0; 712 /** 713 * HitTestResult for hitting a HTML::a tag 714 */ 715 public static final int ANCHOR_TYPE = 1; 716 /** 717 * HitTestResult for hitting a phone number 718 */ 719 public static final int PHONE_TYPE = 2; 720 /** 721 * HitTestResult for hitting a map address 722 */ 723 public static final int GEO_TYPE = 3; 724 /** 725 * HitTestResult for hitting an email address 726 */ 727 public static final int EMAIL_TYPE = 4; 728 /** 729 * HitTestResult for hitting an HTML::img tag 730 */ 731 public static final int IMAGE_TYPE = 5; 732 /** 733 * HitTestResult for hitting a HTML::a tag which contains HTML::img 734 */ 735 public static final int IMAGE_ANCHOR_TYPE = 6; 736 /** 737 * HitTestResult for hitting a HTML::a tag with src=http 738 */ 739 public static final int SRC_ANCHOR_TYPE = 7; 740 /** 741 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 742 */ 743 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 744 /** 745 * HitTestResult for hitting an edit text area 746 */ 747 public static final int EDIT_TEXT_TYPE = 9; 748 749 private int mType; 750 private String mExtra; 751 752 HitTestResult() { 753 mType = UNKNOWN_TYPE; 754 } 755 756 private void setType(int type) { 757 mType = type; 758 } 759 760 private void setExtra(String extra) { 761 mExtra = extra; 762 } 763 764 public int getType() { 765 return mType; 766 } 767 768 public String getExtra() { 769 return mExtra; 770 } 771 } 772 773 // The View containing the zoom controls 774 private ExtendedZoomControls mZoomControls; 775 private Runnable mZoomControlRunnable; 776 777 // mZoomButtonsController will be lazy initialized in 778 // getZoomButtonsController() to get better performance. 779 private ZoomButtonsController mZoomButtonsController; 780 781 // These keep track of the center point of the zoom. They are used to 782 // determine the point around which we should zoom. 783 private float mZoomCenterX; 784 private float mZoomCenterY; 785 786 private ZoomButtonsController.OnZoomListener mZoomListener = 787 new ZoomButtonsController.OnZoomListener() { 788 789 public void onVisibilityChanged(boolean visible) { 790 if (visible) { 791 switchOutDrawHistory(); 792 // Bring back the hidden zoom controls. 793 mZoomButtonsController.getZoomControls().setVisibility( 794 View.VISIBLE); 795 updateZoomButtonsEnabled(); 796 } 797 } 798 799 public void onZoom(boolean zoomIn) { 800 if (zoomIn) { 801 zoomIn(); 802 } else { 803 zoomOut(); 804 } 805 806 updateZoomButtonsEnabled(); 807 } 808 }; 809 810 /** 811 * Construct a new WebView with a Context object. 812 * @param context A Context object used to access application assets. 813 */ 814 public WebView(Context context) { 815 this(context, null); 816 } 817 818 /** 819 * Construct a new WebView with layout parameters. 820 * @param context A Context object used to access application assets. 821 * @param attrs An AttributeSet passed to our parent. 822 */ 823 public WebView(Context context, AttributeSet attrs) { 824 this(context, attrs, com.android.internal.R.attr.webViewStyle); 825 } 826 827 /** 828 * Construct a new WebView with layout parameters and a default style. 829 * @param context A Context object used to access application assets. 830 * @param attrs An AttributeSet passed to our parent. 831 * @param defStyle The default style resource ID. 832 */ 833 public WebView(Context context, AttributeSet attrs, int defStyle) { 834 this(context, attrs, defStyle, null); 835 } 836 837 /** 838 * Construct a new WebView with layout parameters, a default style and a set 839 * of custom Javscript interfaces to be added to the WebView at initialization 840 * time. This guarantees that these interfaces will be available when the JS 841 * context is initialized. 842 * @param context A Context object used to access application assets. 843 * @param attrs An AttributeSet passed to our parent. 844 * @param defStyle The default style resource ID. 845 * @param javascriptInterfaces is a Map of intareface names, as keys, and 846 * object implementing those interfaces, as values. 847 * @hide pending API council approval. 848 */ 849 protected WebView(Context context, AttributeSet attrs, int defStyle, 850 Map<String, Object> javascriptInterfaces) { 851 super(context, attrs, defStyle); 852 init(); 853 854 mCallbackProxy = new CallbackProxy(context, this); 855 mViewManager = new ViewManager(this); 856 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 857 mDatabase = WebViewDatabase.getInstance(context); 858 mScroller = new Scroller(context); 859 860 updateMultiTouchSupport(context); 861 } 862 863 void updateMultiTouchSupport(Context context) { 864 WebSettings settings = getSettings(); 865 mSupportMultiTouch = context.getPackageManager().hasSystemFeature( 866 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 867 && settings.supportZoom() && settings.getBuiltInZoomControls(); 868 if (mSupportMultiTouch && (mScaleDetector == null)) { 869 mScaleDetector = new ScaleGestureDetector(context, 870 new ScaleDetectorListener()); 871 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 872 mScaleDetector = null; 873 } 874 } 875 876 private void updateZoomButtonsEnabled() { 877 if (mZoomButtonsController == null) return; 878 boolean canZoomIn = mActualScale < mMaxZoomScale; 879 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 880 if (!canZoomIn && !canZoomOut) { 881 // Hide the zoom in and out buttons, as well as the fit to page 882 // button, if the page cannot zoom 883 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 884 } else { 885 // Set each one individually, as a page may be able to zoom in 886 // or out. 887 mZoomButtonsController.setZoomInEnabled(canZoomIn); 888 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 889 } 890 } 891 892 private void init() { 893 setWillNotDraw(false); 894 setFocusable(true); 895 setFocusableInTouchMode(true); 896 setClickable(true); 897 setLongClickable(true); 898 899 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 900 int slop = configuration.getScaledTouchSlop(); 901 mTouchSlopSquare = slop * slop; 902 mMinLockSnapReverseDistance = slop; 903 slop = configuration.getScaledDoubleTapSlop(); 904 mDoubleTapSlopSquare = slop * slop; 905 final float density = getContext().getResources().getDisplayMetrics().density; 906 // use one line height, 16 based on our current default font, for how 907 // far we allow a touch be away from the edge of a link 908 mNavSlop = (int) (16 * density); 909 // density adjusted scale factors 910 DEFAULT_SCALE_PERCENT = (int) (100 * density); 911 mDefaultScale = density; 912 mActualScale = density; 913 mInvActualScale = 1 / density; 914 mTextWrapScale = density; 915 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 916 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 917 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 918 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 919 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 920 } 921 922 /* package */void updateDefaultZoomDensity(int zoomDensity) { 923 final float density = getContext().getResources().getDisplayMetrics().density 924 * 100 / zoomDensity; 925 if (Math.abs(density - mDefaultScale) > 0.01) { 926 float scaleFactor = density / mDefaultScale; 927 // adjust the limits 928 mNavSlop = (int) (16 * density); 929 DEFAULT_SCALE_PERCENT = (int) (100 * density); 930 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 931 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 932 mDefaultScale = density; 933 mMaxZoomScale *= scaleFactor; 934 mMinZoomScale *= scaleFactor; 935 setNewZoomScale(mActualScale * scaleFactor, true, false); 936 } 937 } 938 939 /* package */ boolean onSavePassword(String schemePlusHost, String username, 940 String password, final Message resumeMsg) { 941 boolean rVal = false; 942 if (resumeMsg == null) { 943 // null resumeMsg implies saving password silently 944 mDatabase.setUsernamePassword(schemePlusHost, username, password); 945 } else { 946 final Message remember = mPrivateHandler.obtainMessage( 947 REMEMBER_PASSWORD); 948 remember.getData().putString("host", schemePlusHost); 949 remember.getData().putString("username", username); 950 remember.getData().putString("password", password); 951 remember.obj = resumeMsg; 952 953 final Message neverRemember = mPrivateHandler.obtainMessage( 954 NEVER_REMEMBER_PASSWORD); 955 neverRemember.getData().putString("host", schemePlusHost); 956 neverRemember.getData().putString("username", username); 957 neverRemember.getData().putString("password", password); 958 neverRemember.obj = resumeMsg; 959 960 new AlertDialog.Builder(getContext()) 961 .setTitle(com.android.internal.R.string.save_password_label) 962 .setMessage(com.android.internal.R.string.save_password_message) 963 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 964 new DialogInterface.OnClickListener() { 965 public void onClick(DialogInterface dialog, int which) { 966 resumeMsg.sendToTarget(); 967 } 968 }) 969 .setNeutralButton(com.android.internal.R.string.save_password_remember, 970 new DialogInterface.OnClickListener() { 971 public void onClick(DialogInterface dialog, int which) { 972 remember.sendToTarget(); 973 } 974 }) 975 .setNegativeButton(com.android.internal.R.string.save_password_never, 976 new DialogInterface.OnClickListener() { 977 public void onClick(DialogInterface dialog, int which) { 978 neverRemember.sendToTarget(); 979 } 980 }) 981 .setOnCancelListener(new OnCancelListener() { 982 public void onCancel(DialogInterface dialog) { 983 resumeMsg.sendToTarget(); 984 } 985 }).show(); 986 // Return true so that WebViewCore will pause while the dialog is 987 // up. 988 rVal = true; 989 } 990 return rVal; 991 } 992 993 @Override 994 public void setScrollBarStyle(int style) { 995 if (style == View.SCROLLBARS_INSIDE_INSET 996 || style == View.SCROLLBARS_OUTSIDE_INSET) { 997 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 998 } else { 999 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1000 } 1001 super.setScrollBarStyle(style); 1002 } 1003 1004 /** 1005 * Specify whether the horizontal scrollbar has overlay style. 1006 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1007 */ 1008 public void setHorizontalScrollbarOverlay(boolean overlay) { 1009 mOverlayHorizontalScrollbar = overlay; 1010 } 1011 1012 /** 1013 * Specify whether the vertical scrollbar has overlay style. 1014 * @param overlay TRUE if vertical scrollbar should have overlay style. 1015 */ 1016 public void setVerticalScrollbarOverlay(boolean overlay) { 1017 mOverlayVerticalScrollbar = overlay; 1018 } 1019 1020 /** 1021 * Return whether horizontal scrollbar has overlay style 1022 * @return TRUE if horizontal scrollbar has overlay style. 1023 */ 1024 public boolean overlayHorizontalScrollbar() { 1025 return mOverlayHorizontalScrollbar; 1026 } 1027 1028 /** 1029 * Return whether vertical scrollbar has overlay style 1030 * @return TRUE if vertical scrollbar has overlay style. 1031 */ 1032 public boolean overlayVerticalScrollbar() { 1033 return mOverlayVerticalScrollbar; 1034 } 1035 1036 /* 1037 * Return the width of the view where the content of WebView should render 1038 * to. 1039 * Note: this can be called from WebCoreThread. 1040 */ 1041 /* package */ int getViewWidth() { 1042 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1043 return getWidth(); 1044 } else { 1045 return getWidth() - getVerticalScrollbarWidth(); 1046 } 1047 } 1048 1049 /* 1050 * returns the height of the titlebarview (if any). Does not care about 1051 * scrolling 1052 */ 1053 private int getTitleHeight() { 1054 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1055 } 1056 1057 /* 1058 * Return the amount of the titlebarview (if any) that is visible 1059 */ 1060 private int getVisibleTitleHeight() { 1061 return Math.max(getTitleHeight() - mScrollY, 0); 1062 } 1063 1064 /* 1065 * Return the height of the view where the content of WebView should render 1066 * to. Note that this excludes mTitleBar, if there is one. 1067 * Note: this can be called from WebCoreThread. 1068 */ 1069 /* package */ int getViewHeight() { 1070 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1071 } 1072 1073 private int getViewHeightWithTitle() { 1074 int height = getHeight(); 1075 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1076 height -= getHorizontalScrollbarHeight(); 1077 } 1078 return height; 1079 } 1080 1081 /** 1082 * @return The SSL certificate for the main top-level page or null if 1083 * there is no certificate (the site is not secure). 1084 */ 1085 public SslCertificate getCertificate() { 1086 return mCertificate; 1087 } 1088 1089 /** 1090 * Sets the SSL certificate for the main top-level page. 1091 */ 1092 public void setCertificate(SslCertificate certificate) { 1093 if (DebugFlags.WEB_VIEW) { 1094 Log.v(LOGTAG, "setCertificate=" + certificate); 1095 } 1096 // here, the certificate can be null (if the site is not secure) 1097 mCertificate = certificate; 1098 } 1099 1100 //------------------------------------------------------------------------- 1101 // Methods called by activity 1102 //------------------------------------------------------------------------- 1103 1104 /** 1105 * Save the username and password for a particular host in the WebView's 1106 * internal database. 1107 * @param host The host that required the credentials. 1108 * @param username The username for the given host. 1109 * @param password The password for the given host. 1110 */ 1111 public void savePassword(String host, String username, String password) { 1112 mDatabase.setUsernamePassword(host, username, password); 1113 } 1114 1115 /** 1116 * Set the HTTP authentication credentials for a given host and realm. 1117 * 1118 * @param host The host for the credentials. 1119 * @param realm The realm for the credentials. 1120 * @param username The username for the password. If it is null, it means 1121 * password can't be saved. 1122 * @param password The password 1123 */ 1124 public void setHttpAuthUsernamePassword(String host, String realm, 1125 String username, String password) { 1126 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1127 } 1128 1129 /** 1130 * Retrieve the HTTP authentication username and password for a given 1131 * host & realm pair 1132 * 1133 * @param host The host for which the credentials apply. 1134 * @param realm The realm for which the credentials apply. 1135 * @return String[] if found, String[0] is username, which can be null and 1136 * String[1] is password. Return null if it can't find anything. 1137 */ 1138 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1139 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1140 } 1141 1142 /** 1143 * Destroy the internal state of the WebView. This method should be called 1144 * after the WebView has been removed from the view system. No other 1145 * methods may be called on a WebView after destroy. 1146 */ 1147 public void destroy() { 1148 clearTextEntry(false); 1149 if (mWebViewCore != null) { 1150 // Set the handlers to null before destroying WebViewCore so no 1151 // more messages will be posted. 1152 mCallbackProxy.setWebViewClient(null); 1153 mCallbackProxy.setWebChromeClient(null); 1154 // Tell WebViewCore to destroy itself 1155 synchronized (this) { 1156 WebViewCore webViewCore = mWebViewCore; 1157 mWebViewCore = null; // prevent using partial webViewCore 1158 webViewCore.destroy(); 1159 } 1160 // Remove any pending messages that might not be serviced yet. 1161 mPrivateHandler.removeCallbacksAndMessages(null); 1162 mCallbackProxy.removeCallbacksAndMessages(null); 1163 // Wake up the WebCore thread just in case it is waiting for a 1164 // javascript dialog. 1165 synchronized (mCallbackProxy) { 1166 mCallbackProxy.notify(); 1167 } 1168 } 1169 if (mNativeClass != 0) { 1170 nativeDestroy(); 1171 mNativeClass = 0; 1172 } 1173 } 1174 1175 /** 1176 * Enables platform notifications of data state and proxy changes. 1177 */ 1178 public static void enablePlatformNotifications() { 1179 Network.enablePlatformNotifications(); 1180 } 1181 1182 /** 1183 * If platform notifications are enabled, this should be called 1184 * from the Activity's onPause() or onStop(). 1185 */ 1186 public static void disablePlatformNotifications() { 1187 Network.disablePlatformNotifications(); 1188 } 1189 1190 /** 1191 * Sets JavaScript engine flags. 1192 * 1193 * @param flags JS engine flags in a String 1194 * 1195 * @hide pending API solidification 1196 */ 1197 public void setJsFlags(String flags) { 1198 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1199 } 1200 1201 /** 1202 * Inform WebView of the network state. This is used to set 1203 * the javascript property window.navigator.isOnline and 1204 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1205 * @param networkUp boolean indicating if network is available 1206 */ 1207 public void setNetworkAvailable(boolean networkUp) { 1208 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1209 networkUp ? 1 : 0, 0); 1210 } 1211 1212 /** 1213 * Inform WebView about the current network type. 1214 * {@hide} 1215 */ 1216 public void setNetworkType(String type, String subtype) { 1217 Map<String, String> map = new HashMap<String, String>(); 1218 map.put("type", type); 1219 map.put("subtype", subtype); 1220 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1221 } 1222 /** 1223 * Save the state of this WebView used in 1224 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1225 * method no longer stores the display data for this WebView. The previous 1226 * behavior could potentially leak files if {@link #restoreState} was never 1227 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1228 * and restoring the display data. 1229 * @param outState The Bundle to store the WebView state. 1230 * @return The same copy of the back/forward list used to save the state. If 1231 * saveState fails, the returned list will be null. 1232 * @see #savePicture 1233 * @see #restorePicture 1234 */ 1235 public WebBackForwardList saveState(Bundle outState) { 1236 if (outState == null) { 1237 return null; 1238 } 1239 // We grab a copy of the back/forward list because a client of WebView 1240 // may have invalidated the history list by calling clearHistory. 1241 WebBackForwardList list = copyBackForwardList(); 1242 final int currentIndex = list.getCurrentIndex(); 1243 final int size = list.getSize(); 1244 // We should fail saving the state if the list is empty or the index is 1245 // not in a valid range. 1246 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1247 return null; 1248 } 1249 outState.putInt("index", currentIndex); 1250 // FIXME: This should just be a byte[][] instead of ArrayList but 1251 // Parcel.java does not have the code to handle multi-dimensional 1252 // arrays. 1253 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1254 for (int i = 0; i < size; i++) { 1255 WebHistoryItem item = list.getItemAtIndex(i); 1256 if (null == item) { 1257 // FIXME: this shouldn't happen 1258 // need to determine how item got set to null 1259 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1260 return null; 1261 } 1262 byte[] data = item.getFlattenedData(); 1263 if (data == null) { 1264 // It would be very odd to not have any data for a given history 1265 // item. And we will fail to rebuild the history list without 1266 // flattened data. 1267 return null; 1268 } 1269 history.add(data); 1270 } 1271 outState.putSerializable("history", history); 1272 if (mCertificate != null) { 1273 outState.putBundle("certificate", 1274 SslCertificate.saveState(mCertificate)); 1275 } 1276 return list; 1277 } 1278 1279 /** 1280 * Save the current display data to the Bundle given. Used in conjunction 1281 * with {@link #saveState}. 1282 * @param b A Bundle to store the display data. 1283 * @param dest The file to store the serialized picture data. Will be 1284 * overwritten with this WebView's picture data. 1285 * @return True if the picture was successfully saved. 1286 */ 1287 public boolean savePicture(Bundle b, final File dest) { 1288 if (dest == null || b == null) { 1289 return false; 1290 } 1291 final Picture p = capturePicture(); 1292 // Use a temporary file while writing to ensure the destination file 1293 // contains valid data. 1294 final File temp = new File(dest.getPath() + ".writing"); 1295 new Thread(new Runnable() { 1296 public void run() { 1297 try { 1298 FileOutputStream out = new FileOutputStream(temp); 1299 p.writeToStream(out); 1300 out.close(); 1301 // Writing the picture succeeded, rename the temporary file 1302 // to the destination. 1303 temp.renameTo(dest); 1304 } catch (Exception e) { 1305 // too late to do anything about it. 1306 } finally { 1307 temp.delete(); 1308 } 1309 } 1310 }).start(); 1311 // now update the bundle 1312 b.putInt("scrollX", mScrollX); 1313 b.putInt("scrollY", mScrollY); 1314 b.putFloat("scale", mActualScale); 1315 b.putFloat("textwrapScale", mTextWrapScale); 1316 b.putBoolean("overview", mInZoomOverview); 1317 return true; 1318 } 1319 1320 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1321 int sx = b.getInt("scrollX", 0); 1322 int sy = b.getInt("scrollY", 0); 1323 float scale = b.getFloat("scale", 1.0f); 1324 mDrawHistory = true; 1325 mHistoryPicture = p; 1326 mScrollX = sx; 1327 mScrollY = sy; 1328 mHistoryWidth = Math.round(p.getWidth() * scale); 1329 mHistoryHeight = Math.round(p.getHeight() * scale); 1330 // as getWidth() / getHeight() of the view are not available yet, set up 1331 // mActualScale, so that when onSizeChanged() is called, the rest will 1332 // be set correctly 1333 mActualScale = scale; 1334 mInvActualScale = 1 / scale; 1335 mTextWrapScale = b.getFloat("textwrapScale", scale); 1336 mInZoomOverview = b.getBoolean("overview"); 1337 invalidate(); 1338 } 1339 1340 /** 1341 * Restore the display data that was save in {@link #savePicture}. Used in 1342 * conjunction with {@link #restoreState}. 1343 * @param b A Bundle containing the saved display data. 1344 * @param src The file where the picture data was stored. 1345 * @return True if the picture was successfully restored. 1346 */ 1347 public boolean restorePicture(Bundle b, File src) { 1348 if (src == null || b == null) { 1349 return false; 1350 } 1351 if (!src.exists()) { 1352 return false; 1353 } 1354 try { 1355 final FileInputStream in = new FileInputStream(src); 1356 final Bundle copy = new Bundle(b); 1357 new Thread(new Runnable() { 1358 public void run() { 1359 final Picture p = Picture.createFromStream(in); 1360 if (p != null) { 1361 // Post a runnable on the main thread to update the 1362 // history picture fields. 1363 mPrivateHandler.post(new Runnable() { 1364 public void run() { 1365 restoreHistoryPictureFields(p, copy); 1366 } 1367 }); 1368 } 1369 try { 1370 in.close(); 1371 } catch (Exception e) { 1372 // Nothing we can do now. 1373 } 1374 } 1375 }).start(); 1376 } catch (FileNotFoundException e){ 1377 e.printStackTrace(); 1378 } 1379 return true; 1380 } 1381 1382 /** 1383 * Restore the state of this WebView from the given map used in 1384 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1385 * be called to restore the state of the WebView before using the object. If 1386 * it is called after the WebView has had a chance to build state (load 1387 * pages, create a back/forward list, etc.) there may be undesirable 1388 * side-effects. Please note that this method no longer restores the 1389 * display data for this WebView. See {@link #savePicture} and {@link 1390 * #restorePicture} for saving and restoring the display data. 1391 * @param inState The incoming Bundle of state. 1392 * @return The restored back/forward list or null if restoreState failed. 1393 * @see #savePicture 1394 * @see #restorePicture 1395 */ 1396 public WebBackForwardList restoreState(Bundle inState) { 1397 WebBackForwardList returnList = null; 1398 if (inState == null) { 1399 return returnList; 1400 } 1401 if (inState.containsKey("index") && inState.containsKey("history")) { 1402 mCertificate = SslCertificate.restoreState( 1403 inState.getBundle("certificate")); 1404 1405 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1406 final int index = inState.getInt("index"); 1407 // We can't use a clone of the list because we need to modify the 1408 // shared copy, so synchronize instead to prevent concurrent 1409 // modifications. 1410 synchronized (list) { 1411 final List<byte[]> history = 1412 (List<byte[]>) inState.getSerializable("history"); 1413 final int size = history.size(); 1414 // Check the index bounds so we don't crash in native code while 1415 // restoring the history index. 1416 if (index < 0 || index >= size) { 1417 return null; 1418 } 1419 for (int i = 0; i < size; i++) { 1420 byte[] data = history.remove(0); 1421 if (data == null) { 1422 // If we somehow have null data, we cannot reconstruct 1423 // the item and thus our history list cannot be rebuilt. 1424 return null; 1425 } 1426 WebHistoryItem item = new WebHistoryItem(data); 1427 list.addHistoryItem(item); 1428 } 1429 // Grab the most recent copy to return to the caller. 1430 returnList = copyBackForwardList(); 1431 // Update the copy to have the correct index. 1432 returnList.setCurrentIndex(index); 1433 } 1434 // Remove all pending messages because we are restoring previous 1435 // state. 1436 mWebViewCore.removeMessages(); 1437 // Send a restore state message. 1438 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1439 } 1440 return returnList; 1441 } 1442 1443 /** 1444 * Load the given url with the extra headers. 1445 * @param url The url of the resource to load. 1446 * @param extraHeaders The extra headers sent with this url. This should not 1447 * include the common headers like "user-agent". If it does, it 1448 * will be replaced by the intrinsic value of the WebView. 1449 */ 1450 public void loadUrl(String url, Map<String, String> extraHeaders) { 1451 switchOutDrawHistory(); 1452 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1453 arg.mUrl = url; 1454 arg.mExtraHeaders = extraHeaders; 1455 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1456 clearTextEntry(false); 1457 } 1458 1459 /** 1460 * Load the given url. 1461 * @param url The url of the resource to load. 1462 */ 1463 public void loadUrl(String url) { 1464 if (url == null) { 1465 return; 1466 } 1467 loadUrl(url, null); 1468 } 1469 1470 /** 1471 * Load the url with postData using "POST" method into the WebView. If url 1472 * is not a network url, it will be loaded with {link 1473 * {@link #loadUrl(String)} instead. 1474 * 1475 * @param url The url of the resource to load. 1476 * @param postData The data will be passed to "POST" request. 1477 */ 1478 public void postUrl(String url, byte[] postData) { 1479 if (URLUtil.isNetworkUrl(url)) { 1480 switchOutDrawHistory(); 1481 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1482 arg.mUrl = url; 1483 arg.mPostData = postData; 1484 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1485 clearTextEntry(false); 1486 } else { 1487 loadUrl(url); 1488 } 1489 } 1490 1491 /** 1492 * Load the given data into the WebView. This will load the data into 1493 * WebView using the data: scheme. Content loaded through this mechanism 1494 * does not have the ability to load content from the network. 1495 * @param data A String of data in the given encoding. The date must 1496 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1497 * %27, %3f respectively. 1498 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1499 * @param encoding The encoding of the data. i.e. utf-8, base64 1500 */ 1501 public void loadData(String data, String mimeType, String encoding) { 1502 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1503 } 1504 1505 /** 1506 * Load the given data into the WebView, use the provided URL as the base 1507 * URL for the content. The base URL is the URL that represents the page 1508 * that is loaded through this interface. As such, it is used to resolve any 1509 * relative URLs. The historyUrl is used for the history entry. 1510 * <p> 1511 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1512 * files through "file:///android_asset/" for the sub resources is more 1513 * restricted. If you provide null or empty string as baseUrl, you won't be 1514 * able to access asset files. If the baseUrl is anything other than 1515 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1516 * sub resources. 1517 * 1518 * @param baseUrl Url to resolve relative paths with, if null defaults to 1519 * "about:blank" 1520 * @param data A String of data in the given encoding. 1521 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1522 * defaults to "text/html" 1523 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1524 * @param historyUrl URL to use as the history entry. Can be null. 1525 */ 1526 public void loadDataWithBaseURL(String baseUrl, String data, 1527 String mimeType, String encoding, String historyUrl) { 1528 1529 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1530 loadData(data, mimeType, encoding); 1531 return; 1532 } 1533 switchOutDrawHistory(); 1534 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1535 arg.mBaseUrl = baseUrl; 1536 arg.mData = data; 1537 arg.mMimeType = mimeType; 1538 arg.mEncoding = encoding; 1539 arg.mHistoryUrl = historyUrl; 1540 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1541 clearTextEntry(false); 1542 } 1543 1544 /** 1545 * Stop the current load. 1546 */ 1547 public void stopLoading() { 1548 // TODO: should we clear all the messages in the queue before sending 1549 // STOP_LOADING? 1550 switchOutDrawHistory(); 1551 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1552 } 1553 1554 /** 1555 * Reload the current url. 1556 */ 1557 public void reload() { 1558 clearTextEntry(false); 1559 switchOutDrawHistory(); 1560 mWebViewCore.sendMessage(EventHub.RELOAD); 1561 } 1562 1563 /** 1564 * Return true if this WebView has a back history item. 1565 * @return True iff this WebView has a back history item. 1566 */ 1567 public boolean canGoBack() { 1568 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1569 synchronized (l) { 1570 if (l.getClearPending()) { 1571 return false; 1572 } else { 1573 return l.getCurrentIndex() > 0; 1574 } 1575 } 1576 } 1577 1578 /** 1579 * Go back in the history of this WebView. 1580 */ 1581 public void goBack() { 1582 goBackOrForward(-1); 1583 } 1584 1585 /** 1586 * Return true if this WebView has a forward history item. 1587 * @return True iff this Webview has a forward history item. 1588 */ 1589 public boolean canGoForward() { 1590 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1591 synchronized (l) { 1592 if (l.getClearPending()) { 1593 return false; 1594 } else { 1595 return l.getCurrentIndex() < l.getSize() - 1; 1596 } 1597 } 1598 } 1599 1600 /** 1601 * Go forward in the history of this WebView. 1602 */ 1603 public void goForward() { 1604 goBackOrForward(1); 1605 } 1606 1607 /** 1608 * Return true if the page can go back or forward the given 1609 * number of steps. 1610 * @param steps The negative or positive number of steps to move the 1611 * history. 1612 */ 1613 public boolean canGoBackOrForward(int steps) { 1614 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1615 synchronized (l) { 1616 if (l.getClearPending()) { 1617 return false; 1618 } else { 1619 int newIndex = l.getCurrentIndex() + steps; 1620 return newIndex >= 0 && newIndex < l.getSize(); 1621 } 1622 } 1623 } 1624 1625 /** 1626 * Go to the history item that is the number of steps away from 1627 * the current item. Steps is negative if backward and positive 1628 * if forward. 1629 * @param steps The number of steps to take back or forward in the back 1630 * forward list. 1631 */ 1632 public void goBackOrForward(int steps) { 1633 goBackOrForward(steps, false); 1634 } 1635 1636 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1637 if (steps != 0) { 1638 clearTextEntry(false); 1639 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1640 ignoreSnapshot ? 1 : 0); 1641 } 1642 } 1643 1644 private boolean extendScroll(int y) { 1645 int finalY = mScroller.getFinalY(); 1646 int newY = pinLocY(finalY + y); 1647 if (newY == finalY) return false; 1648 mScroller.setFinalY(newY); 1649 mScroller.extendDuration(computeDuration(0, y)); 1650 return true; 1651 } 1652 1653 /** 1654 * Scroll the contents of the view up by half the view size 1655 * @param top true to jump to the top of the page 1656 * @return true if the page was scrolled 1657 */ 1658 public boolean pageUp(boolean top) { 1659 if (mNativeClass == 0) { 1660 return false; 1661 } 1662 nativeClearCursor(); // start next trackball movement from page edge 1663 if (top) { 1664 // go to the top of the document 1665 return pinScrollTo(mScrollX, 0, true, 0); 1666 } 1667 // Page up 1668 int h = getHeight(); 1669 int y; 1670 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1671 y = -h + PAGE_SCROLL_OVERLAP; 1672 } else { 1673 y = -h / 2; 1674 } 1675 mUserScroll = true; 1676 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1677 : extendScroll(y); 1678 } 1679 1680 /** 1681 * Scroll the contents of the view down by half the page size 1682 * @param bottom true to jump to bottom of page 1683 * @return true if the page was scrolled 1684 */ 1685 public boolean pageDown(boolean bottom) { 1686 if (mNativeClass == 0) { 1687 return false; 1688 } 1689 nativeClearCursor(); // start next trackball movement from page edge 1690 if (bottom) { 1691 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1692 } 1693 // Page down. 1694 int h = getHeight(); 1695 int y; 1696 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1697 y = h - PAGE_SCROLL_OVERLAP; 1698 } else { 1699 y = h / 2; 1700 } 1701 mUserScroll = true; 1702 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1703 : extendScroll(y); 1704 } 1705 1706 /** 1707 * Clear the view so that onDraw() will draw nothing but white background, 1708 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1709 */ 1710 public void clearView() { 1711 mContentWidth = 0; 1712 mContentHeight = 0; 1713 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1714 } 1715 1716 /** 1717 * Return a new picture that captures the current display of the webview. 1718 * This is a copy of the display, and will be unaffected if the webview 1719 * later loads a different URL. 1720 * 1721 * @return a picture containing the current contents of the view. Note this 1722 * picture is of the entire document, and is not restricted to the 1723 * bounds of the view. 1724 */ 1725 public Picture capturePicture() { 1726 if (null == mWebViewCore) return null; // check for out of memory tab 1727 return mWebViewCore.copyContentPicture(); 1728 } 1729 1730 /** 1731 * Return true if the browser is displaying a TextView for text input. 1732 */ 1733 private boolean inEditingMode() { 1734 return mWebTextView != null && mWebTextView.getParent() != null; 1735 } 1736 1737 /** 1738 * Remove the WebTextView. 1739 * @param disableFocusController If true, send a message to webkit 1740 * disabling the focus controller, so the caret stops blinking. 1741 */ 1742 private void clearTextEntry(boolean disableFocusController) { 1743 if (inEditingMode()) { 1744 mWebTextView.remove(); 1745 if (disableFocusController) { 1746 setFocusControllerInactive(); 1747 } 1748 } 1749 } 1750 1751 /** 1752 * Return the current scale of the WebView 1753 * @return The current scale. 1754 */ 1755 public float getScale() { 1756 return mActualScale; 1757 } 1758 1759 /** 1760 * Set the initial scale for the WebView. 0 means default. If 1761 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1762 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1763 * WebView starts will this value as initial scale. 1764 * 1765 * @param scaleInPercent The initial scale in percent. 1766 */ 1767 public void setInitialScale(int scaleInPercent) { 1768 mInitialScaleInPercent = scaleInPercent; 1769 } 1770 1771 /** 1772 * Invoke the graphical zoom picker widget for this WebView. This will 1773 * result in the zoom widget appearing on the screen to control the zoom 1774 * level of this WebView. 1775 */ 1776 public void invokeZoomPicker() { 1777 if (!getSettings().supportZoom()) { 1778 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1779 return; 1780 } 1781 clearTextEntry(false); 1782 if (getSettings().getBuiltInZoomControls()) { 1783 getZoomButtonsController().setVisible(true); 1784 } else { 1785 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1786 mPrivateHandler.postDelayed(mZoomControlRunnable, 1787 ZOOM_CONTROLS_TIMEOUT); 1788 } 1789 } 1790 1791 /** 1792 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1793 * is found and the anchor has a non-javascript url, the HitTestResult type 1794 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1795 * anchor does not have a url or if it is a javascript url, the type will 1796 * be UNKNOWN_TYPE and the url has to be retrieved through 1797 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1798 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1799 * the "extra" field. A type of 1800 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1801 * a child node. If a phone number is found, the HitTestResult type is set 1802 * to PHONE_TYPE and the phone number is set in the "extra" field of 1803 * HitTestResult. If a map address is found, the HitTestResult type is set 1804 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1805 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1806 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1807 * HitTestResult type is set to UNKNOWN_TYPE. 1808 */ 1809 public HitTestResult getHitTestResult() { 1810 if (mNativeClass == 0) { 1811 return null; 1812 } 1813 1814 HitTestResult result = new HitTestResult(); 1815 if (nativeHasCursorNode()) { 1816 if (nativeCursorIsTextInput()) { 1817 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1818 } else { 1819 String text = nativeCursorText(); 1820 if (text != null) { 1821 if (text.startsWith(SCHEME_TEL)) { 1822 result.setType(HitTestResult.PHONE_TYPE); 1823 result.setExtra(text.substring(SCHEME_TEL.length())); 1824 } else if (text.startsWith(SCHEME_MAILTO)) { 1825 result.setType(HitTestResult.EMAIL_TYPE); 1826 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1827 } else if (text.startsWith(SCHEME_GEO)) { 1828 result.setType(HitTestResult.GEO_TYPE); 1829 result.setExtra(URLDecoder.decode(text 1830 .substring(SCHEME_GEO.length()))); 1831 } else if (nativeCursorIsAnchor()) { 1832 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1833 result.setExtra(text); 1834 } 1835 } 1836 } 1837 } 1838 int type = result.getType(); 1839 if (type == HitTestResult.UNKNOWN_TYPE 1840 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1841 // Now check to see if it is an image. 1842 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1843 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1844 String text = nativeImageURI(contentX, contentY); 1845 if (text != null) { 1846 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1847 HitTestResult.IMAGE_TYPE : 1848 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1849 result.setExtra(text); 1850 } 1851 } 1852 return result; 1853 } 1854 1855 // Called by JNI when the DOM has changed the focus. Clear the focus so 1856 // that new keys will go to the newly focused field 1857 private void domChangedFocus() { 1858 if (inEditingMode()) { 1859 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 1860 } 1861 } 1862 /** 1863 * Request the href of an anchor element due to getFocusNodePath returning 1864 * "href." If hrefMsg is null, this method returns immediately and does not 1865 * dispatch hrefMsg to its target. 1866 * 1867 * @param hrefMsg This message will be dispatched with the result of the 1868 * request as the data member with "url" as key. The result can 1869 * be null. 1870 */ 1871 // FIXME: API change required to change the name of this function. We now 1872 // look at the cursor node, and not the focus node. Also, what is 1873 // getFocusNodePath? 1874 public void requestFocusNodeHref(Message hrefMsg) { 1875 if (hrefMsg == null || mNativeClass == 0) { 1876 return; 1877 } 1878 if (nativeCursorIsAnchor()) { 1879 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1880 nativeCursorFramePointer(), nativeCursorNodePointer(), 1881 hrefMsg); 1882 } 1883 } 1884 1885 /** 1886 * Request the url of the image last touched by the user. msg will be sent 1887 * to its target with a String representing the url as its object. 1888 * 1889 * @param msg This message will be dispatched with the result of the request 1890 * as the data member with "url" as key. The result can be null. 1891 */ 1892 public void requestImageRef(Message msg) { 1893 if (0 == mNativeClass) return; // client isn't initialized 1894 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1895 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1896 String ref = nativeImageURI(contentX, contentY); 1897 Bundle data = msg.getData(); 1898 data.putString("url", ref); 1899 msg.setData(data); 1900 msg.sendToTarget(); 1901 } 1902 1903 private static int pinLoc(int x, int viewMax, int docMax) { 1904// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1905 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1906 // pin the short document to the top/left of the screen 1907 x = 0; 1908// Log.d(LOGTAG, "--- center " + x); 1909 } else if (x < 0) { 1910 x = 0; 1911// Log.d(LOGTAG, "--- zero"); 1912 } else if (x + viewMax > docMax) { 1913 x = docMax - viewMax; 1914// Log.d(LOGTAG, "--- pin " + x); 1915 } 1916 return x; 1917 } 1918 1919 // Expects x in view coordinates 1920 private int pinLocX(int x) { 1921 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1922 } 1923 1924 // Expects y in view coordinates 1925 private int pinLocY(int y) { 1926 return pinLoc(y, getViewHeightWithTitle(), 1927 computeVerticalScrollRange() + getTitleHeight()); 1928 } 1929 1930 /** 1931 * A title bar which is embedded in this WebView, and scrolls along with it 1932 * vertically, but not horizontally. 1933 */ 1934 private View mTitleBar; 1935 1936 /** 1937 * Since we draw the title bar ourselves, we removed the shadow from the 1938 * browser's activity. We do want a shadow at the bottom of the title bar, 1939 * or at the top of the screen if the title bar is not visible. This 1940 * drawable serves that purpose. 1941 */ 1942 private Drawable mTitleShadow; 1943 1944 /** 1945 * Add or remove a title bar to be embedded into the WebView, and scroll 1946 * along with it vertically, while remaining in view horizontally. Pass 1947 * null to remove the title bar from the WebView, and return to drawing 1948 * the WebView normally without translating to account for the title bar. 1949 * @hide 1950 */ 1951 public void setEmbeddedTitleBar(View v) { 1952 if (mTitleBar == v) return; 1953 if (mTitleBar != null) { 1954 removeView(mTitleBar); 1955 } 1956 if (null != v) { 1957 addView(v, new AbsoluteLayout.LayoutParams( 1958 ViewGroup.LayoutParams.MATCH_PARENT, 1959 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1960 if (mTitleShadow == null) { 1961 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1962 com.android.internal.R.drawable.title_bar_shadow); 1963 } 1964 } 1965 mTitleBar = v; 1966 } 1967 1968 /** 1969 * Given a distance in view space, convert it to content space. Note: this 1970 * does not reflect translation, just scaling, so this should not be called 1971 * with coordinates, but should be called for dimensions like width or 1972 * height. 1973 */ 1974 private int viewToContentDimension(int d) { 1975 return Math.round(d * mInvActualScale); 1976 } 1977 1978 /** 1979 * Given an x coordinate in view space, convert it to content space. Also 1980 * may be used for absolute heights (such as for the WebTextView's 1981 * textSize, which is unaffected by the height of the title bar). 1982 */ 1983 /*package*/ int viewToContentX(int x) { 1984 return viewToContentDimension(x); 1985 } 1986 1987 /** 1988 * Given a y coordinate in view space, convert it to content space. 1989 * Takes into account the height of the title bar if there is one 1990 * embedded into the WebView. 1991 */ 1992 /*package*/ int viewToContentY(int y) { 1993 return viewToContentDimension(y - getTitleHeight()); 1994 } 1995 1996 /** 1997 * Given a distance in content space, convert it to view space. Note: this 1998 * does not reflect translation, just scaling, so this should not be called 1999 * with coordinates, but should be called for dimensions like width or 2000 * height. 2001 */ 2002 /*package*/ int contentToViewDimension(int d) { 2003 return Math.round(d * mActualScale); 2004 } 2005 2006 /** 2007 * Given an x coordinate in content space, convert it to view 2008 * space. 2009 */ 2010 /*package*/ int contentToViewX(int x) { 2011 return contentToViewDimension(x); 2012 } 2013 2014 /** 2015 * Given a y coordinate in content space, convert it to view 2016 * space. Takes into account the height of the title bar. 2017 */ 2018 /*package*/ int contentToViewY(int y) { 2019 return contentToViewDimension(y) + getTitleHeight(); 2020 } 2021 2022 private Rect contentToViewRect(Rect x) { 2023 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2024 contentToViewX(x.right), contentToViewY(x.bottom)); 2025 } 2026 2027 /* To invalidate a rectangle in content coordinates, we need to transform 2028 the rect into view coordinates, so we can then call invalidate(...). 2029 2030 Normally, we would just call contentToView[XY](...), which eventually 2031 calls Math.round(coordinate * mActualScale). However, for invalidates, 2032 we need to account for the slop that occurs with antialiasing. To 2033 address that, we are a little more liberal in the size of the rect that 2034 we invalidate. 2035 2036 This liberal calculation calls floor() for the top/left, and ceil() for 2037 the bottom/right coordinates. This catches the possible extra pixels of 2038 antialiasing that we might have missed with just round(). 2039 */ 2040 2041 // Called by JNI to invalidate the View, given rectangle coordinates in 2042 // content space 2043 private void viewInvalidate(int l, int t, int r, int b) { 2044 final float scale = mActualScale; 2045 final int dy = getTitleHeight(); 2046 invalidate((int)Math.floor(l * scale), 2047 (int)Math.floor(t * scale) + dy, 2048 (int)Math.ceil(r * scale), 2049 (int)Math.ceil(b * scale) + dy); 2050 } 2051 2052 // Called by JNI to invalidate the View after a delay, given rectangle 2053 // coordinates in content space 2054 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2055 final float scale = mActualScale; 2056 final int dy = getTitleHeight(); 2057 postInvalidateDelayed(delay, 2058 (int)Math.floor(l * scale), 2059 (int)Math.floor(t * scale) + dy, 2060 (int)Math.ceil(r * scale), 2061 (int)Math.ceil(b * scale) + dy); 2062 } 2063 2064 private void invalidateContentRect(Rect r) { 2065 viewInvalidate(r.left, r.top, r.right, r.bottom); 2066 } 2067 2068 // stop the scroll animation, and don't let a subsequent fling add 2069 // to the existing velocity 2070 private void abortAnimation() { 2071 mScroller.abortAnimation(); 2072 mLastVelocity = 0; 2073 } 2074 2075 /* call from webcoreview.draw(), so we're still executing in the UI thread 2076 */ 2077 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2078 2079 // premature data from webkit, ignore 2080 if ((w | h) == 0) { 2081 return; 2082 } 2083 2084 // don't abort a scroll animation if we didn't change anything 2085 if (mContentWidth != w || mContentHeight != h) { 2086 // record new dimensions 2087 mContentWidth = w; 2088 mContentHeight = h; 2089 // If history Picture is drawn, don't update scroll. They will be 2090 // updated when we get out of that mode. 2091 if (!mDrawHistory) { 2092 // repin our scroll, taking into account the new content size 2093 int oldX = mScrollX; 2094 int oldY = mScrollY; 2095 mScrollX = pinLocX(mScrollX); 2096 mScrollY = pinLocY(mScrollY); 2097 if (oldX != mScrollX || oldY != mScrollY) { 2098 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2099 } 2100 if (!mScroller.isFinished()) { 2101 // We are in the middle of a scroll. Repin the final scroll 2102 // position. 2103 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2104 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2105 } 2106 } 2107 } 2108 contentSizeChanged(updateLayout); 2109 } 2110 2111 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 2112 boolean force) { 2113 if (scale < mMinZoomScale) { 2114 scale = mMinZoomScale; 2115 // set mInZoomOverview for non mobile sites 2116 if (scale < mDefaultScale) mInZoomOverview = true; 2117 } else if (scale > mMaxZoomScale) { 2118 scale = mMaxZoomScale; 2119 } 2120 if (updateTextWrapScale) { 2121 mTextWrapScale = scale; 2122 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 2123 mLastHeightSent = 0; 2124 } 2125 if (scale != mActualScale || force) { 2126 if (mDrawHistory) { 2127 // If history Picture is drawn, don't update scroll. They will 2128 // be updated when we get out of that mode. 2129 if (scale != mActualScale && !mPreviewZoomOnly) { 2130 mCallbackProxy.onScaleChanged(mActualScale, scale); 2131 } 2132 mActualScale = scale; 2133 mInvActualScale = 1 / scale; 2134 sendViewSizeZoom(); 2135 } else { 2136 // update our scroll so we don't appear to jump 2137 // i.e. keep the center of the doc in the center of the view 2138 2139 int oldX = mScrollX; 2140 int oldY = mScrollY; 2141 float ratio = scale * mInvActualScale; // old inverse 2142 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2143 float sy = ratio * oldY + (ratio - 1) 2144 * (mZoomCenterY - getTitleHeight()); 2145 2146 // now update our new scale and inverse 2147 if (scale != mActualScale && !mPreviewZoomOnly) { 2148 mCallbackProxy.onScaleChanged(mActualScale, scale); 2149 } 2150 mActualScale = scale; 2151 mInvActualScale = 1 / scale; 2152 2153 // Scale all the child views 2154 mViewManager.scaleAll(); 2155 2156 // as we don't have animation for scaling, don't do animation 2157 // for scrolling, as it causes weird intermediate state 2158 // pinScrollTo(Math.round(sx), Math.round(sy)); 2159 mScrollX = pinLocX(Math.round(sx)); 2160 mScrollY = pinLocY(Math.round(sy)); 2161 2162 // update webkit 2163 if (oldX != mScrollX || oldY != mScrollY) { 2164 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2165 } else { 2166 // the scroll position is adjusted at the beginning of the 2167 // zoom animation. But we want to update the WebKit at the 2168 // end of the zoom animation. See comments in onScaleEnd(). 2169 sendOurVisibleRect(); 2170 } 2171 sendViewSizeZoom(); 2172 } 2173 } 2174 } 2175 2176 // Used to avoid sending many visible rect messages. 2177 private Rect mLastVisibleRectSent; 2178 private Rect mLastGlobalRect; 2179 2180 private Rect sendOurVisibleRect() { 2181 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2182 2183 Rect rect = new Rect(); 2184 calcOurContentVisibleRect(rect); 2185 // Rect.equals() checks for null input. 2186 if (!rect.equals(mLastVisibleRectSent)) { 2187 Point pos = new Point(rect.left, rect.top); 2188 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2189 nativeMoveGeneration(), 0, pos); 2190 mLastVisibleRectSent = rect; 2191 } 2192 Rect globalRect = new Rect(); 2193 if (getGlobalVisibleRect(globalRect) 2194 && !globalRect.equals(mLastGlobalRect)) { 2195 if (DebugFlags.WEB_VIEW) { 2196 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2197 + globalRect.top + ",r=" + globalRect.right + ",b=" 2198 + globalRect.bottom); 2199 } 2200 // TODO: the global offset is only used by windowRect() 2201 // in ChromeClientAndroid ; other clients such as touch 2202 // and mouse events could return view + screen relative points. 2203 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2204 mLastGlobalRect = globalRect; 2205 } 2206 return rect; 2207 } 2208 2209 // Sets r to be the visible rectangle of our webview in view coordinates 2210 private void calcOurVisibleRect(Rect r) { 2211 Point p = new Point(); 2212 getGlobalVisibleRect(r, p); 2213 r.offset(-p.x, -p.y); 2214 if (mFindIsUp) { 2215 r.bottom -= mFindHeight; 2216 } 2217 } 2218 2219 // Sets r to be our visible rectangle in content coordinates 2220 private void calcOurContentVisibleRect(Rect r) { 2221 calcOurVisibleRect(r); 2222 // pin the rect to the bounds of the content 2223 r.left = Math.max(viewToContentX(r.left), 0); 2224 // viewToContentY will remove the total height of the title bar. Add 2225 // the visible height back in to account for the fact that if the title 2226 // bar is partially visible, the part of the visible rect which is 2227 // displaying our content is displaced by that amount. 2228 r.top = Math.max(viewToContentY(r.top + getVisibleTitleHeight()), 0); 2229 r.right = Math.min(viewToContentX(r.right), mContentWidth); 2230 r.bottom = Math.min(viewToContentY(r.bottom), mContentHeight); 2231 } 2232 2233 static class ViewSizeData { 2234 int mWidth; 2235 int mHeight; 2236 int mTextWrapWidth; 2237 int mAnchorX; 2238 int mAnchorY; 2239 float mScale; 2240 boolean mIgnoreHeight; 2241 } 2242 2243 /** 2244 * Compute unzoomed width and height, and if they differ from the last 2245 * values we sent, send them to webkit (to be used has new viewport) 2246 * 2247 * @return true if new values were sent 2248 */ 2249 private boolean sendViewSizeZoom() { 2250 if (mPreviewZoomOnly) return false; 2251 2252 int viewWidth = getViewWidth(); 2253 int newWidth = Math.round(viewWidth * mInvActualScale); 2254 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2255 /* 2256 * Because the native side may have already done a layout before the 2257 * View system was able to measure us, we have to send a height of 0 to 2258 * remove excess whitespace when we grow our width. This will trigger a 2259 * layout and a change in content size. This content size change will 2260 * mean that contentSizeChanged will either call this method directly or 2261 * indirectly from onSizeChanged. 2262 */ 2263 if (newWidth > mLastWidthSent && mWrapContent) { 2264 newHeight = 0; 2265 } 2266 // Avoid sending another message if the dimensions have not changed. 2267 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2268 ViewSizeData data = new ViewSizeData(); 2269 data.mWidth = newWidth; 2270 data.mHeight = newHeight; 2271 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2272 data.mScale = mActualScale; 2273 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2274 data.mAnchorX = mAnchorX; 2275 data.mAnchorY = mAnchorY; 2276 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2277 mLastWidthSent = newWidth; 2278 mLastHeightSent = newHeight; 2279 mAnchorX = mAnchorY = 0; 2280 return true; 2281 } 2282 return false; 2283 } 2284 2285 @Override 2286 protected int computeHorizontalScrollRange() { 2287 if (mDrawHistory) { 2288 return mHistoryWidth; 2289 } else if (mHorizontalScrollBarMode == SCROLLBAR_ALWAYSOFF 2290 && (mActualScale - mMinZoomScale <= MINIMUM_SCALE_INCREMENT)) { 2291 // only honor the scrollbar mode when it is at minimum zoom level 2292 return computeHorizontalScrollExtent(); 2293 } else { 2294 // to avoid rounding error caused unnecessary scrollbar, use floor 2295 return (int) Math.floor(mContentWidth * mActualScale); 2296 } 2297 } 2298 2299 @Override 2300 protected int computeVerticalScrollRange() { 2301 if (mDrawHistory) { 2302 return mHistoryHeight; 2303 } else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF 2304 && (mActualScale - mMinZoomScale <= MINIMUM_SCALE_INCREMENT)) { 2305 // only honor the scrollbar mode when it is at minimum zoom level 2306 return computeVerticalScrollExtent(); 2307 } else { 2308 // to avoid rounding error caused unnecessary scrollbar, use floor 2309 return (int) Math.floor(mContentHeight * mActualScale); 2310 } 2311 } 2312 2313 @Override 2314 protected int computeVerticalScrollOffset() { 2315 return Math.max(mScrollY - getTitleHeight(), 0); 2316 } 2317 2318 @Override 2319 protected int computeVerticalScrollExtent() { 2320 return getViewHeight(); 2321 } 2322 2323 /** @hide */ 2324 @Override 2325 protected void onDrawVerticalScrollBar(Canvas canvas, 2326 Drawable scrollBar, 2327 int l, int t, int r, int b) { 2328 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2329 scrollBar.draw(canvas); 2330 } 2331 2332 /** 2333 * Get the url for the current page. This is not always the same as the url 2334 * passed to WebViewClient.onPageStarted because although the load for 2335 * that url has begun, the current page may not have changed. 2336 * @return The url for the current page. 2337 */ 2338 public String getUrl() { 2339 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2340 return h != null ? h.getUrl() : null; 2341 } 2342 2343 /** 2344 * Get the original url for the current page. This is not always the same 2345 * as the url passed to WebViewClient.onPageStarted because although the 2346 * load for that url has begun, the current page may not have changed. 2347 * Also, there may have been redirects resulting in a different url to that 2348 * originally requested. 2349 * @return The url that was originally requested for the current page. 2350 */ 2351 public String getOriginalUrl() { 2352 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2353 return h != null ? h.getOriginalUrl() : null; 2354 } 2355 2356 /** 2357 * Get the title for the current page. This is the title of the current page 2358 * until WebViewClient.onReceivedTitle is called. 2359 * @return The title for the current page. 2360 */ 2361 public String getTitle() { 2362 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2363 return h != null ? h.getTitle() : null; 2364 } 2365 2366 /** 2367 * Get the favicon for the current page. This is the favicon of the current 2368 * page until WebViewClient.onReceivedIcon is called. 2369 * @return The favicon for the current page. 2370 */ 2371 public Bitmap getFavicon() { 2372 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2373 return h != null ? h.getFavicon() : null; 2374 } 2375 2376 /** 2377 * Get the touch icon url for the apple-touch-icon <link> element. 2378 * @hide 2379 */ 2380 public String getTouchIconUrl() { 2381 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2382 return h != null ? h.getTouchIconUrl() : null; 2383 } 2384 2385 /** 2386 * Get the progress for the current page. 2387 * @return The progress for the current page between 0 and 100. 2388 */ 2389 public int getProgress() { 2390 return mCallbackProxy.getProgress(); 2391 } 2392 2393 /** 2394 * @return the height of the HTML content. 2395 */ 2396 public int getContentHeight() { 2397 return mContentHeight; 2398 } 2399 2400 /** 2401 * @return the width of the HTML content. 2402 * @hide 2403 */ 2404 public int getContentWidth() { 2405 return mContentWidth; 2406 } 2407 2408 /** 2409 * Pause all layout, parsing, and javascript timers for all webviews. This 2410 * is a global requests, not restricted to just this webview. This can be 2411 * useful if the application has been paused. 2412 */ 2413 public void pauseTimers() { 2414 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2415 } 2416 2417 /** 2418 * Resume all layout, parsing, and javascript timers for all webviews. 2419 * This will resume dispatching all timers. 2420 */ 2421 public void resumeTimers() { 2422 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2423 } 2424 2425 /** 2426 * Call this to pause any extra processing associated with this view and 2427 * its associated DOM/plugins/javascript/etc. For example, if the view is 2428 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2429 * network traffic. When the view is again "active", call onResume(). 2430 * 2431 * Note that this differs from pauseTimers(), which affects all views/DOMs 2432 * @hide 2433 */ 2434 public void onPause() { 2435 if (!mIsPaused) { 2436 mIsPaused = true; 2437 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2438 } 2439 } 2440 2441 /** 2442 * Call this to balanace a previous call to onPause() 2443 * @hide 2444 */ 2445 public void onResume() { 2446 if (mIsPaused) { 2447 mIsPaused = false; 2448 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2449 } 2450 } 2451 2452 /** 2453 * Returns true if the view is paused, meaning onPause() was called. Calling 2454 * onResume() sets the paused state back to false. 2455 * @hide 2456 */ 2457 public boolean isPaused() { 2458 return mIsPaused; 2459 } 2460 2461 /** 2462 * Call this to inform the view that memory is low so that it can 2463 * free any available memory. 2464 */ 2465 public void freeMemory() { 2466 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2467 } 2468 2469 /** 2470 * Clear the resource cache. Note that the cache is per-application, so 2471 * this will clear the cache for all WebViews used. 2472 * 2473 * @param includeDiskFiles If false, only the RAM cache is cleared. 2474 */ 2475 public void clearCache(boolean includeDiskFiles) { 2476 // Note: this really needs to be a static method as it clears cache for all 2477 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2478 // we can't make this static. 2479 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2480 includeDiskFiles ? 1 : 0, 0); 2481 } 2482 2483 /** 2484 * Make sure that clearing the form data removes the adapter from the 2485 * currently focused textfield if there is one. 2486 */ 2487 public void clearFormData() { 2488 if (inEditingMode()) { 2489 AutoCompleteAdapter adapter = null; 2490 mWebTextView.setAdapterCustom(adapter); 2491 } 2492 } 2493 2494 /** 2495 * Tell the WebView to clear its internal back/forward list. 2496 */ 2497 public void clearHistory() { 2498 mCallbackProxy.getBackForwardList().setClearPending(); 2499 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2500 } 2501 2502 /** 2503 * Clear the SSL preferences table stored in response to proceeding with SSL 2504 * certificate errors. 2505 */ 2506 public void clearSslPreferences() { 2507 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2508 } 2509 2510 /** 2511 * Return the WebBackForwardList for this WebView. This contains the 2512 * back/forward list for use in querying each item in the history stack. 2513 * This is a copy of the private WebBackForwardList so it contains only a 2514 * snapshot of the current state. Multiple calls to this method may return 2515 * different objects. The object returned from this method will not be 2516 * updated to reflect any new state. 2517 */ 2518 public WebBackForwardList copyBackForwardList() { 2519 return mCallbackProxy.getBackForwardList().clone(); 2520 } 2521 2522 /* 2523 * Highlight and scroll to the next occurance of String in findAll. 2524 * Wraps the page infinitely, and scrolls. Must be called after 2525 * calling findAll. 2526 * 2527 * @param forward Direction to search. 2528 */ 2529 public void findNext(boolean forward) { 2530 if (0 == mNativeClass) return; // client isn't initialized 2531 nativeFindNext(forward); 2532 } 2533 2534 /* 2535 * Find all instances of find on the page and highlight them. 2536 * @param find String to find. 2537 * @return int The number of occurances of the String "find" 2538 * that were found. 2539 */ 2540 public int findAll(String find) { 2541 if (0 == mNativeClass) return 0; // client isn't initialized 2542 int result = find != null ? nativeFindAll(find.toLowerCase(), 2543 find.toUpperCase()) : 0; 2544 invalidate(); 2545 mLastFind = find; 2546 return result; 2547 } 2548 2549 /** 2550 * @hide 2551 */ 2552 public void setFindIsUp(boolean isUp) { 2553 mFindIsUp = isUp; 2554 if (isUp) { 2555 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2556 false); 2557 } 2558 if (0 == mNativeClass) return; // client isn't initialized 2559 nativeSetFindIsUp(isUp); 2560 } 2561 2562 // Used to know whether the find dialog is open. Affects whether 2563 // or not we draw the highlights for matches. 2564 private boolean mFindIsUp; 2565 2566 private int mFindHeight; 2567 // Keep track of the last string sent, so we can search again after an 2568 // orientation change or the dismissal of the soft keyboard. 2569 private String mLastFind; 2570 2571 /** 2572 * Return the first substring consisting of the address of a physical 2573 * location. Currently, only addresses in the United States are detected, 2574 * and consist of: 2575 * - a house number 2576 * - a street name 2577 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2578 * - a city name 2579 * - a state or territory, either spelled out or two-letter abbr. 2580 * - an optional 5 digit or 9 digit zip code. 2581 * 2582 * All names must be correctly capitalized, and the zip code, if present, 2583 * must be valid for the state. The street type must be a standard USPS 2584 * spelling or abbreviation. The state or territory must also be spelled 2585 * or abbreviated using USPS standards. The house number may not exceed 2586 * five digits. 2587 * @param addr The string to search for addresses. 2588 * 2589 * @return the address, or if no address is found, return null. 2590 */ 2591 public static String findAddress(String addr) { 2592 return findAddress(addr, false); 2593 } 2594 2595 /** 2596 * @hide 2597 * Return the first substring consisting of the address of a physical 2598 * location. Currently, only addresses in the United States are detected, 2599 * and consist of: 2600 * - a house number 2601 * - a street name 2602 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2603 * - a city name 2604 * - a state or territory, either spelled out or two-letter abbr. 2605 * - an optional 5 digit or 9 digit zip code. 2606 * 2607 * Names are optionally capitalized, and the zip code, if present, 2608 * must be valid for the state. The street type must be a standard USPS 2609 * spelling or abbreviation. The state or territory must also be spelled 2610 * or abbreviated using USPS standards. The house number may not exceed 2611 * five digits. 2612 * @param addr The string to search for addresses. 2613 * @param caseInsensitive addr Set to true to make search ignore case. 2614 * 2615 * @return the address, or if no address is found, return null. 2616 */ 2617 public static String findAddress(String addr, boolean caseInsensitive) { 2618 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2619 } 2620 2621 /* 2622 * Clear the highlighting surrounding text matches created by findAll. 2623 */ 2624 public void clearMatches() { 2625 mLastFind = ""; 2626 if (mNativeClass == 0) 2627 return; 2628 nativeSetFindIsEmpty(); 2629 invalidate(); 2630 } 2631 2632 /** 2633 * @hide 2634 */ 2635 public void notifyFindDialogDismissed() { 2636 if (mWebViewCore == null) { 2637 return; 2638 } 2639 clearMatches(); 2640 setFindIsUp(false); 2641 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2642 false); 2643 // Now that the dialog has been removed, ensure that we scroll to a 2644 // location that is not beyond the end of the page. 2645 pinScrollTo(mScrollX, mScrollY, false, 0); 2646 invalidate(); 2647 } 2648 2649 /** 2650 * @hide 2651 */ 2652 public void setFindDialogHeight(int height) { 2653 if (DebugFlags.WEB_VIEW) { 2654 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2655 } 2656 mFindHeight = height; 2657 } 2658 2659 /** 2660 * Query the document to see if it contains any image references. The 2661 * message object will be dispatched with arg1 being set to 1 if images 2662 * were found and 0 if the document does not reference any images. 2663 * @param response The message that will be dispatched with the result. 2664 */ 2665 public void documentHasImages(Message response) { 2666 if (response == null) { 2667 return; 2668 } 2669 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2670 } 2671 2672 @Override 2673 public void computeScroll() { 2674 if (mScroller.computeScrollOffset()) { 2675 int oldX = mScrollX; 2676 int oldY = mScrollY; 2677 mScrollX = mScroller.getCurrX(); 2678 mScrollY = mScroller.getCurrY(); 2679 postInvalidate(); // So we draw again 2680 if (oldX != mScrollX || oldY != mScrollY) { 2681 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2682 } 2683 } else { 2684 super.computeScroll(); 2685 } 2686 } 2687 2688 private static int computeDuration(int dx, int dy) { 2689 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2690 int duration = distance * 1000 / STD_SPEED; 2691 return Math.min(duration, MAX_DURATION); 2692 } 2693 2694 // helper to pin the scrollBy parameters (already in view coordinates) 2695 // returns true if the scroll was changed 2696 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2697 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2698 } 2699 // helper to pin the scrollTo parameters (already in view coordinates) 2700 // returns true if the scroll was changed 2701 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2702 x = pinLocX(x); 2703 y = pinLocY(y); 2704 int dx = x - mScrollX; 2705 int dy = y - mScrollY; 2706 2707 if ((dx | dy) == 0) { 2708 return false; 2709 } 2710 if (animate) { 2711 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2712 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2713 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2714 awakenScrollBars(mScroller.getDuration()); 2715 invalidate(); 2716 } else { 2717 abortAnimation(); // just in case 2718 scrollTo(x, y); 2719 } 2720 return true; 2721 } 2722 2723 // Scale from content to view coordinates, and pin. 2724 // Also called by jni webview.cpp 2725 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2726 if (mDrawHistory) { 2727 // disallow WebView to change the scroll position as History Picture 2728 // is used in the view system. 2729 // TODO: as we switchOutDrawHistory when trackball or navigation 2730 // keys are hit, this should be safe. Right? 2731 return false; 2732 } 2733 cx = contentToViewDimension(cx); 2734 cy = contentToViewDimension(cy); 2735 if (mHeightCanMeasure) { 2736 // move our visible rect according to scroll request 2737 if (cy != 0) { 2738 Rect tempRect = new Rect(); 2739 calcOurVisibleRect(tempRect); 2740 tempRect.offset(cx, cy); 2741 requestRectangleOnScreen(tempRect); 2742 } 2743 // FIXME: We scroll horizontally no matter what because currently 2744 // ScrollView and ListView will not scroll horizontally. 2745 // FIXME: Why do we only scroll horizontally if there is no 2746 // vertical scroll? 2747// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2748 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2749 } else { 2750 return pinScrollBy(cx, cy, animate, 0); 2751 } 2752 } 2753 2754 /** 2755 * Called by CallbackProxy when the page finishes loading. 2756 * @param url The URL of the page which has finished loading. 2757 */ 2758 /* package */ void onPageFinished(String url) { 2759 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 2760 // If the user is now on a different page, or has scrolled the page 2761 // past the point where the title bar is offscreen, ignore the 2762 // scroll request. 2763 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 2764 && mScrollX == 0 && mScrollY == 0) { 2765 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 2766 SLIDE_TITLE_DURATION); 2767 } 2768 mPageThatNeedsToSlideTitleBarOffScreen = null; 2769 } 2770 } 2771 2772 /** 2773 * The URL of a page that sent a message to scroll the title bar off screen. 2774 * 2775 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 2776 * title bar off the screen. Sometimes, the scroll position is set before 2777 * the page finishes loading. Rather than scrolling while the page is still 2778 * loading, keep track of the URL and new scroll position so we can perform 2779 * the scroll once the page finishes loading. 2780 */ 2781 private String mPageThatNeedsToSlideTitleBarOffScreen; 2782 2783 /** 2784 * The destination Y scroll position to be used when the page finishes 2785 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 2786 */ 2787 private int mYDistanceToSlideTitleOffScreen; 2788 2789 // scale from content to view coordinates, and pin 2790 // return true if pin caused the final x/y different than the request cx/cy, 2791 // and a future scroll may reach the request cx/cy after our size has 2792 // changed 2793 // return false if the view scroll to the exact position as it is requested, 2794 // where negative numbers are taken to mean 0 2795 private boolean setContentScrollTo(int cx, int cy) { 2796 if (mDrawHistory) { 2797 // disallow WebView to change the scroll position as History Picture 2798 // is used in the view system. 2799 // One known case where this is called is that WebCore tries to 2800 // restore the scroll position. As history Picture already uses the 2801 // saved scroll position, it is ok to skip this. 2802 return false; 2803 } 2804 int vx; 2805 int vy; 2806 if ((cx | cy) == 0) { 2807 // If the page is being scrolled to (0,0), do not add in the title 2808 // bar's height, and simply scroll to (0,0). (The only other work 2809 // in contentToView_ is to multiply, so this would not change 0.) 2810 vx = 0; 2811 vy = 0; 2812 } else { 2813 vx = contentToViewX(cx); 2814 vy = contentToViewY(cy); 2815 } 2816// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2817// vx + " " + vy + "]"); 2818 // Some mobile sites attempt to scroll the title bar off the page by 2819 // scrolling to (0,1). If we are at the top left corner of the 2820 // page, assume this is an attempt to scroll off the title bar, and 2821 // animate the title bar off screen slowly enough that the user can see 2822 // it. 2823 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 2824 && mTitleBar != null) { 2825 // FIXME: 100 should be defined somewhere as our max progress. 2826 if (getProgress() < 100) { 2827 // Wait to scroll the title bar off screen until the page has 2828 // finished loading. Keep track of the URL and the destination 2829 // Y position 2830 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 2831 mYDistanceToSlideTitleOffScreen = vy; 2832 } else { 2833 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2834 } 2835 // Since we are animating, we have not yet reached the desired 2836 // scroll position. Do not return true to request another attempt 2837 return false; 2838 } 2839 pinScrollTo(vx, vy, false, 0); 2840 // If the request was to scroll to a negative coordinate, treat it as if 2841 // it was a request to scroll to 0 2842 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2843 return true; 2844 } else { 2845 return false; 2846 } 2847 } 2848 2849 // scale from content to view coordinates, and pin 2850 private void spawnContentScrollTo(int cx, int cy) { 2851 if (mDrawHistory) { 2852 // disallow WebView to change the scroll position as History Picture 2853 // is used in the view system. 2854 return; 2855 } 2856 int vx = contentToViewX(cx); 2857 int vy = contentToViewY(cy); 2858 pinScrollTo(vx, vy, true, 0); 2859 } 2860 2861 /** 2862 * These are from webkit, and are in content coordinate system (unzoomed) 2863 */ 2864 private void contentSizeChanged(boolean updateLayout) { 2865 // suppress 0,0 since we usually see real dimensions soon after 2866 // this avoids drawing the prev content in a funny place. If we find a 2867 // way to consolidate these notifications, this check may become 2868 // obsolete 2869 if ((mContentWidth | mContentHeight) == 0) { 2870 return; 2871 } 2872 2873 if (mHeightCanMeasure) { 2874 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2875 || updateLayout) { 2876 requestLayout(); 2877 } 2878 } else if (mWidthCanMeasure) { 2879 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2880 || updateLayout) { 2881 requestLayout(); 2882 } 2883 } else { 2884 // If we don't request a layout, try to send our view size to the 2885 // native side to ensure that WebCore has the correct dimensions. 2886 sendViewSizeZoom(); 2887 } 2888 } 2889 2890 /** 2891 * Set the WebViewClient that will receive various notifications and 2892 * requests. This will replace the current handler. 2893 * @param client An implementation of WebViewClient. 2894 */ 2895 public void setWebViewClient(WebViewClient client) { 2896 mCallbackProxy.setWebViewClient(client); 2897 } 2898 2899 /** 2900 * Gets the WebViewClient 2901 * @return the current WebViewClient instance. 2902 * 2903 *@hide pending API council approval. 2904 */ 2905 public WebViewClient getWebViewClient() { 2906 return mCallbackProxy.getWebViewClient(); 2907 } 2908 2909 /** 2910 * Register the interface to be used when content can not be handled by 2911 * the rendering engine, and should be downloaded instead. This will replace 2912 * the current handler. 2913 * @param listener An implementation of DownloadListener. 2914 */ 2915 public void setDownloadListener(DownloadListener listener) { 2916 mCallbackProxy.setDownloadListener(listener); 2917 } 2918 2919 /** 2920 * Set the chrome handler. This is an implementation of WebChromeClient for 2921 * use in handling Javascript dialogs, favicons, titles, and the progress. 2922 * This will replace the current handler. 2923 * @param client An implementation of WebChromeClient. 2924 */ 2925 public void setWebChromeClient(WebChromeClient client) { 2926 mCallbackProxy.setWebChromeClient(client); 2927 } 2928 2929 /** 2930 * Gets the chrome handler. 2931 * @return the current WebChromeClient instance. 2932 * 2933 * @hide API council approval. 2934 */ 2935 public WebChromeClient getWebChromeClient() { 2936 return mCallbackProxy.getWebChromeClient(); 2937 } 2938 2939 /** 2940 * Set the back/forward list client. This is an implementation of 2941 * WebBackForwardListClient for handling new items and changes in the 2942 * history index. 2943 * @param client An implementation of WebBackForwardListClient. 2944 * {@hide} 2945 */ 2946 public void setWebBackForwardListClient(WebBackForwardListClient client) { 2947 mCallbackProxy.setWebBackForwardListClient(client); 2948 } 2949 2950 /** 2951 * Gets the WebBackForwardListClient. 2952 * {@hide} 2953 */ 2954 public WebBackForwardListClient getWebBackForwardListClient() { 2955 return mCallbackProxy.getWebBackForwardListClient(); 2956 } 2957 2958 /** 2959 * Set the Picture listener. This is an interface used to receive 2960 * notifications of a new Picture. 2961 * @param listener An implementation of WebView.PictureListener. 2962 */ 2963 public void setPictureListener(PictureListener listener) { 2964 mPictureListener = listener; 2965 } 2966 2967 /** 2968 * {@hide} 2969 */ 2970 /* FIXME: Debug only! Remove for SDK! */ 2971 public void externalRepresentation(Message callback) { 2972 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2973 } 2974 2975 /** 2976 * {@hide} 2977 */ 2978 /* FIXME: Debug only! Remove for SDK! */ 2979 public void documentAsText(Message callback) { 2980 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2981 } 2982 2983 /** 2984 * Use this function to bind an object to Javascript so that the 2985 * methods can be accessed from Javascript. 2986 * <p><strong>IMPORTANT:</strong> 2987 * <ul> 2988 * <li> Using addJavascriptInterface() allows JavaScript to control your 2989 * application. This can be a very useful feature or a dangerous security 2990 * issue. When the HTML in the WebView is untrustworthy (for example, part 2991 * or all of the HTML is provided by some person or process), then an 2992 * attacker could inject HTML that will execute your code and possibly any 2993 * code of the attacker's choosing.<br> 2994 * Do not use addJavascriptInterface() unless all of the HTML in this 2995 * WebView was written by you.</li> 2996 * <li> The Java object that is bound runs in another thread and not in 2997 * the thread that it was constructed in.</li> 2998 * </ul></p> 2999 * @param obj The class instance to bind to Javascript 3000 * @param interfaceName The name to used to expose the class in Javascript 3001 */ 3002 public void addJavascriptInterface(Object obj, String interfaceName) { 3003 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3004 arg.mObject = obj; 3005 arg.mInterfaceName = interfaceName; 3006 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3007 } 3008 3009 /** 3010 * Return the WebSettings object used to control the settings for this 3011 * WebView. 3012 * @return A WebSettings object that can be used to control this WebView's 3013 * settings. 3014 */ 3015 public WebSettings getSettings() { 3016 return mWebViewCore.getSettings(); 3017 } 3018 3019 /** 3020 * Use this method to inform the webview about packages that are installed 3021 * in the system. This information will be used by the 3022 * navigator.isApplicationInstalled() API. 3023 * @param packageNames is a set of package names that are known to be 3024 * installed in the system. 3025 * 3026 * @hide not a public API 3027 */ 3028 public void addPackageNames(Set<String> packageNames) { 3029 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, packageNames); 3030 } 3031 3032 /** 3033 * Use this method to inform the webview about single packages that are 3034 * installed in the system. This information will be used by the 3035 * navigator.isApplicationInstalled() API. 3036 * @param packageName is the name of a package that is known to be 3037 * installed in the system. 3038 * 3039 * @hide not a public API 3040 */ 3041 public void addPackageName(String packageName) { 3042 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 3043 } 3044 3045 /** 3046 * Use this method to inform the webview about packages that are uninstalled 3047 * in the system. This information will be used by the 3048 * navigator.isApplicationInstalled() API. 3049 * @param packageName is the name of a package that has been uninstalled in 3050 * the system. 3051 * 3052 * @hide not a public API 3053 */ 3054 public void removePackageName(String packageName) { 3055 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 3056 } 3057 3058 /** 3059 * Return the list of currently loaded plugins. 3060 * @return The list of currently loaded plugins. 3061 * 3062 * @deprecated This was used for Gears, which has been deprecated. 3063 */ 3064 @Deprecated 3065 public static synchronized PluginList getPluginList() { 3066 return new PluginList(); 3067 } 3068 3069 /** 3070 * @deprecated This was used for Gears, which has been deprecated. 3071 */ 3072 @Deprecated 3073 public void refreshPlugins(boolean reloadOpenPages) { } 3074 3075 //------------------------------------------------------------------------- 3076 // Override View methods 3077 //------------------------------------------------------------------------- 3078 3079 @Override 3080 protected void finalize() throws Throwable { 3081 try { 3082 destroy(); 3083 } finally { 3084 super.finalize(); 3085 } 3086 } 3087 3088 @Override 3089 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3090 if (child == mTitleBar) { 3091 // When drawing the title bar, move it horizontally to always show 3092 // at the top of the WebView. 3093 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3094 } 3095 return super.drawChild(canvas, child, drawingTime); 3096 } 3097 3098 private void drawContent(Canvas canvas) { 3099 // Update the buttons in the picture, so when we draw the picture 3100 // to the screen, they are in the correct state. 3101 // Tell the native side if user is a) touching the screen, 3102 // b) pressing the trackball down, or c) pressing the enter key 3103 // If the cursor is on a button, we need to draw it in the pressed 3104 // state. 3105 // If mNativeClass is 0, we should not reach here, so we do not 3106 // need to check it again. 3107 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3108 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3109 || mTrackballDown || mGotCenterDown, false); 3110 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3111 } 3112 3113 @Override 3114 protected void onDraw(Canvas canvas) { 3115 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3116 if (mNativeClass == 0) { 3117 return; 3118 } 3119 3120 // if both mContentWidth and mContentHeight are 0, it means there is no 3121 // valid Picture passed to WebView yet. This can happen when WebView 3122 // just starts. Draw the background and return. 3123 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3124 canvas.drawColor(mBackgroundColor); 3125 return; 3126 } 3127 3128 int saveCount = canvas.save(); 3129 if (mTitleBar != null) { 3130 canvas.translate(0, (int) mTitleBar.getHeight()); 3131 } 3132 if (mDragTrackerHandler == null) { 3133 drawContent(canvas); 3134 } else { 3135 if (!mDragTrackerHandler.draw(canvas)) { 3136 // sometimes the tracker doesn't draw, even though its active 3137 drawContent(canvas); 3138 } 3139 if (mDragTrackerHandler.isFinished()) { 3140 mDragTrackerHandler = null; 3141 } 3142 } 3143 canvas.restoreToCount(saveCount); 3144 3145 // Now draw the shadow. 3146 int titleH = getVisibleTitleHeight(); 3147 if (mTitleBar != null && titleH == 0) { 3148 int height = (int) (5f * getContext().getResources() 3149 .getDisplayMetrics().density); 3150 mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(), 3151 mScrollY + height); 3152 mTitleShadow.draw(canvas); 3153 } 3154 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3155 invalidate(); 3156 } 3157 mWebViewCore.signalRepaintDone(); 3158 } 3159 3160 @Override 3161 public void setLayoutParams(ViewGroup.LayoutParams params) { 3162 if (params.height == LayoutParams.WRAP_CONTENT) { 3163 mWrapContent = true; 3164 } 3165 super.setLayoutParams(params); 3166 } 3167 3168 @Override 3169 public boolean performLongClick() { 3170 // performLongClick() is the result of a delayed message. If we switch 3171 // to windows overview, the WebView will be temporarily removed from the 3172 // view system. In that case, do nothing. 3173 if (getParent() == null) return false; 3174 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3175 // Send the click so that the textfield is in focus 3176 centerKeyPressOnTextField(); 3177 rebuildWebTextView(); 3178 } 3179 if (inEditingMode()) { 3180 return mWebTextView.performLongClick(); 3181 } else { 3182 return super.performLongClick(); 3183 } 3184 } 3185 3186 boolean inAnimateZoom() { 3187 return mZoomScale != 0; 3188 } 3189 3190 /** 3191 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3192 * has changed. This is especially important for password fields, which are 3193 * drawn by the WebTextView, since it conveys more information than what 3194 * webkit draws. Thus we need to reposition it to show in the correct 3195 * place. 3196 */ 3197 private boolean mNeedToAdjustWebTextView; 3198 3199 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3200 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3201 Rect vBox = contentToViewRect(contentBounds); 3202 Rect visibleRect = new Rect(); 3203 calcOurVisibleRect(visibleRect); 3204 // If the textfield is on screen, place the WebTextView in 3205 // its new place, accounting for our new scroll/zoom values, 3206 // and adjust its textsize. 3207 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3208 : visibleRect.contains(vBox)) { 3209 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3210 vBox.height()); 3211 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3212 contentToViewDimension( 3213 nativeFocusCandidateTextSize())); 3214 return true; 3215 } else { 3216 // The textfield is now off screen. The user probably 3217 // was not zooming to see the textfield better. Remove 3218 // the WebTextView. If the user types a key, and the 3219 // textfield is still in focus, we will reconstruct 3220 // the WebTextView and scroll it back on screen. 3221 mWebTextView.remove(); 3222 return false; 3223 } 3224 } 3225 3226 private void drawExtras(Canvas canvas, int extras, boolean animationsRunning) { 3227 // If mNativeClass is 0, we should not reach here, so we do not 3228 // need to check it again. 3229 if (animationsRunning) { 3230 canvas.setDrawFilter(mWebViewCore.mZoomFilter); 3231 } 3232 nativeDrawExtras(canvas, extras); 3233 canvas.setDrawFilter(null); 3234 } 3235 3236 private void drawCoreAndCursorRing(Canvas canvas, int color, 3237 boolean drawCursorRing) { 3238 if (mDrawHistory) { 3239 canvas.scale(mActualScale, mActualScale); 3240 canvas.drawPicture(mHistoryPicture); 3241 return; 3242 } 3243 3244 boolean animateZoom = mZoomScale != 0; 3245 boolean animateScroll = ((!mScroller.isFinished() 3246 || mVelocityTracker != null) 3247 && (mTouchMode != TOUCH_DRAG_MODE || 3248 mHeldMotionless != MOTIONLESS_TRUE)) 3249 || mDeferTouchMode == TOUCH_DRAG_MODE; 3250 if (mTouchMode == TOUCH_DRAG_MODE) { 3251 if (mHeldMotionless == MOTIONLESS_PENDING) { 3252 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3253 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3254 mHeldMotionless = MOTIONLESS_FALSE; 3255 } 3256 if (mHeldMotionless == MOTIONLESS_FALSE) { 3257 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3258 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3259 mHeldMotionless = MOTIONLESS_PENDING; 3260 } 3261 } 3262 if (animateZoom) { 3263 float zoomScale; 3264 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 3265 if (interval < ZOOM_ANIMATION_LENGTH) { 3266 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 3267 zoomScale = 1.0f / (mInvInitialZoomScale 3268 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 3269 invalidate(); 3270 } else { 3271 zoomScale = mZoomScale; 3272 // set mZoomScale to be 0 as we have done animation 3273 mZoomScale = 0; 3274 WebViewCore.resumeUpdatePicture(mWebViewCore); 3275 // call invalidate() again to draw with the final filters 3276 invalidate(); 3277 if (mNeedToAdjustWebTextView) { 3278 mNeedToAdjustWebTextView = false; 3279 if (didUpdateTextViewBounds(false) 3280 && nativeFocusCandidateIsPassword()) { 3281 // If it is a password field, start drawing the 3282 // WebTextView once again. 3283 mWebTextView.setInPassword(true); 3284 } 3285 } 3286 } 3287 // calculate the intermediate scroll position. As we need to use 3288 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 3289 float scale = zoomScale * mInvInitialZoomScale; 3290 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 3291 - mZoomCenterX); 3292 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 3293 * zoomScale)) + mScrollX; 3294 int titleHeight = getTitleHeight(); 3295 int ty = Math.round(scale 3296 * (mInitialScrollY + mZoomCenterY - titleHeight) 3297 - (mZoomCenterY - titleHeight)); 3298 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 3299 - titleHeight, getViewHeight(), Math.round(mContentHeight 3300 * zoomScale)) + titleHeight) + mScrollY; 3301 canvas.translate(tx, ty); 3302 canvas.scale(zoomScale, zoomScale); 3303 if (inEditingMode() && !mNeedToAdjustWebTextView 3304 && mZoomScale != 0) { 3305 // The WebTextView is up. Keep track of this so we can adjust 3306 // its size and placement when we finish zooming 3307 mNeedToAdjustWebTextView = true; 3308 // If it is in password mode, turn it off so it does not draw 3309 // misplaced. 3310 if (nativeFocusCandidateIsPassword()) { 3311 mWebTextView.setInPassword(false); 3312 } 3313 } 3314 } else { 3315 canvas.scale(mActualScale, mActualScale); 3316 } 3317 3318 boolean UIAnimationsRunning = false; 3319 // Currently for each draw we compute the animation values; 3320 // We may in the future decide to do that independently. 3321 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 3322 UIAnimationsRunning = true; 3323 // If we have unfinished (or unstarted) animations, 3324 // we ask for a repaint. 3325 invalidate(); 3326 } 3327 mWebViewCore.drawContentPicture(canvas, color, 3328 (animateZoom || mPreviewZoomOnly || UIAnimationsRunning), 3329 animateScroll); 3330 if (mNativeClass == 0) return; 3331 // decide which adornments to draw 3332 int extras = DRAW_EXTRAS_NONE; 3333 if (mFindIsUp) { 3334 // When the FindDialog is up, only draw the matches if we are not in 3335 // the process of scrolling them into view. 3336 if (!animateScroll) { 3337 extras = DRAW_EXTRAS_FIND; 3338 } 3339 } else if (mShiftIsPressed && !nativeFocusIsPlugin()) { 3340 if (!animateZoom && !mPreviewZoomOnly) { 3341 extras = DRAW_EXTRAS_SELECTION; 3342 nativeSetSelectionRegion(mTouchSelection || mExtendSelection); 3343 nativeSetSelectionPointer(!mTouchSelection, mInvActualScale, 3344 mSelectX, mSelectY - getTitleHeight(), 3345 mExtendSelection); 3346 } 3347 } else if (drawCursorRing) { 3348 extras = DRAW_EXTRAS_CURSOR_RING; 3349 } 3350 drawExtras(canvas, extras, UIAnimationsRunning); 3351 3352 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3353 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3354 mTouchMode = TOUCH_SHORTPRESS_MODE; 3355 HitTestResult hitTest = getHitTestResult(); 3356 if (hitTest == null 3357 || hitTest.mType == HitTestResult.UNKNOWN_TYPE) { 3358 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3359 } 3360 } 3361 } 3362 if (mFocusSizeChanged) { 3363 mFocusSizeChanged = false; 3364 // If we are zooming, this will get handled above, when the zoom 3365 // finishes. We also do not need to do this unless the WebTextView 3366 // is showing. 3367 if (!animateZoom && inEditingMode()) { 3368 didUpdateTextViewBounds(true); 3369 } 3370 } 3371 } 3372 3373 // draw history 3374 private boolean mDrawHistory = false; 3375 private Picture mHistoryPicture = null; 3376 private int mHistoryWidth = 0; 3377 private int mHistoryHeight = 0; 3378 3379 // Only check the flag, can be called from WebCore thread 3380 boolean drawHistory() { 3381 return mDrawHistory; 3382 } 3383 3384 // Should only be called in UI thread 3385 void switchOutDrawHistory() { 3386 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3387 if (mDrawHistory && mWebViewCore.pictureReady()) { 3388 mDrawHistory = false; 3389 mHistoryPicture = null; 3390 invalidate(); 3391 int oldScrollX = mScrollX; 3392 int oldScrollY = mScrollY; 3393 mScrollX = pinLocX(mScrollX); 3394 mScrollY = pinLocY(mScrollY); 3395 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3396 mUserScroll = false; 3397 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3398 oldScrollY); 3399 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 3400 } else { 3401 sendOurVisibleRect(); 3402 } 3403 } 3404 } 3405 3406 WebViewCore.CursorData cursorData() { 3407 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3408 result.mMoveGeneration = nativeMoveGeneration(); 3409 result.mFrame = nativeCursorFramePointer(); 3410 Point position = nativeCursorPosition(); 3411 result.mX = position.x; 3412 result.mY = position.y; 3413 return result; 3414 } 3415 3416 /** 3417 * Delete text from start to end in the focused textfield. If there is no 3418 * focus, or if start == end, silently fail. If start and end are out of 3419 * order, swap them. 3420 * @param start Beginning of selection to delete. 3421 * @param end End of selection to delete. 3422 */ 3423 /* package */ void deleteSelection(int start, int end) { 3424 mTextGeneration++; 3425 WebViewCore.TextSelectionData data 3426 = new WebViewCore.TextSelectionData(start, end); 3427 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3428 data); 3429 } 3430 3431 /** 3432 * Set the selection to (start, end) in the focused textfield. If start and 3433 * end are out of order, swap them. 3434 * @param start Beginning of selection. 3435 * @param end End of selection. 3436 */ 3437 /* package */ void setSelection(int start, int end) { 3438 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3439 } 3440 3441 @Override 3442 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3443 InputConnection connection = super.onCreateInputConnection(outAttrs); 3444 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3445 return connection; 3446 } 3447 3448 /** 3449 * Called in response to a message from webkit telling us that the soft 3450 * keyboard should be launched. 3451 */ 3452 private void displaySoftKeyboard(boolean isTextView) { 3453 InputMethodManager imm = (InputMethodManager) 3454 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3455 3456 // bring it back to the default scale so that user can enter text 3457 boolean zoom = mActualScale < mDefaultScale; 3458 if (zoom) { 3459 mInZoomOverview = false; 3460 mZoomCenterX = mLastTouchX; 3461 mZoomCenterY = mLastTouchY; 3462 // do not change text wrap scale so that there is no reflow 3463 setNewZoomScale(mDefaultScale, false, false); 3464 } 3465 if (isTextView) { 3466 rebuildWebTextView(); 3467 if (inEditingMode()) { 3468 imm.showSoftInput(mWebTextView, 0); 3469 if (zoom) { 3470 didUpdateTextViewBounds(true); 3471 } 3472 return; 3473 } 3474 } 3475 // Used by plugins. 3476 // Also used if the navigation cache is out of date, and 3477 // does not recognize that a textfield is in focus. In that 3478 // case, use WebView as the targeted view. 3479 // see http://b/issue?id=2457459 3480 imm.showSoftInput(this, 0); 3481 } 3482 3483 // Called by WebKit to instruct the UI to hide the keyboard 3484 private void hideSoftKeyboard() { 3485 InputMethodManager imm = (InputMethodManager) 3486 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3487 3488 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3489 } 3490 3491 /* 3492 * This method checks the current focus and cursor and potentially rebuilds 3493 * mWebTextView to have the appropriate properties, such as password, 3494 * multiline, and what text it contains. It also removes it if necessary. 3495 */ 3496 /* package */ void rebuildWebTextView() { 3497 // If the WebView does not have focus, do nothing until it gains focus. 3498 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3499 return; 3500 } 3501 boolean alreadyThere = inEditingMode(); 3502 // inEditingMode can only return true if mWebTextView is non-null, 3503 // so we can safely call remove() if (alreadyThere) 3504 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3505 if (alreadyThere) { 3506 mWebTextView.remove(); 3507 } 3508 return; 3509 } 3510 // At this point, we know we have found an input field, so go ahead 3511 // and create the WebTextView if necessary. 3512 if (mWebTextView == null) { 3513 mWebTextView = new WebTextView(mContext, WebView.this); 3514 // Initialize our generation number. 3515 mTextGeneration = 0; 3516 } 3517 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3518 contentToViewDimension(nativeFocusCandidateTextSize())); 3519 Rect visibleRect = new Rect(); 3520 calcOurContentVisibleRect(visibleRect); 3521 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3522 // should be in content coordinates. 3523 Rect bounds = nativeFocusCandidateNodeBounds(); 3524 Rect vBox = contentToViewRect(bounds); 3525 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3526 if (!Rect.intersects(bounds, visibleRect)) { 3527 mWebTextView.bringIntoView(); 3528 } 3529 String text = nativeFocusCandidateText(); 3530 int nodePointer = nativeFocusCandidatePointer(); 3531 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3532 // It is possible that we have the same textfield, but it has moved, 3533 // i.e. In the case of opening/closing the screen. 3534 // In that case, we need to set the dimensions, but not the other 3535 // aspects. 3536 // If the text has been changed by webkit, update it. However, if 3537 // there has been more UI text input, ignore it. We will receive 3538 // another update when that text is recognized. 3539 if (text != null && !text.equals(mWebTextView.getText().toString()) 3540 && nativeTextGeneration() == mTextGeneration) { 3541 mWebTextView.setTextAndKeepSelection(text); 3542 } 3543 } else { 3544 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3545 Gravity.RIGHT : Gravity.NO_GRAVITY); 3546 // This needs to be called before setType, which may call 3547 // requestFormData, and it needs to have the correct nodePointer. 3548 mWebTextView.setNodePointer(nodePointer); 3549 mWebTextView.setType(nativeFocusCandidateType()); 3550 if (null == text) { 3551 if (DebugFlags.WEB_VIEW) { 3552 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3553 } 3554 text = ""; 3555 } 3556 mWebTextView.setTextAndKeepSelection(text); 3557 InputMethodManager imm = InputMethodManager.peekInstance(); 3558 if (imm != null && imm.isActive(mWebTextView)) { 3559 imm.restartInput(mWebTextView); 3560 } 3561 } 3562 mWebTextView.requestFocus(); 3563 } 3564 3565 /** 3566 * Called by WebTextView to find saved form data associated with the 3567 * textfield 3568 * @param name Name of the textfield. 3569 * @param nodePointer Pointer to the node of the textfield, so it can be 3570 * compared to the currently focused textfield when the data is 3571 * retrieved. 3572 */ 3573 /* package */ void requestFormData(String name, int nodePointer) { 3574 if (mWebViewCore.getSettings().getSaveFormData()) { 3575 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3576 update.arg1 = nodePointer; 3577 RequestFormData updater = new RequestFormData(name, getUrl(), 3578 update); 3579 Thread t = new Thread(updater); 3580 t.start(); 3581 } 3582 } 3583 3584 /** 3585 * Pass a message to find out the <label> associated with the <input> 3586 * identified by nodePointer 3587 * @param framePointer Pointer to the frame containing the <input> node 3588 * @param nodePointer Pointer to the node for which a <label> is desired. 3589 */ 3590 /* package */ void requestLabel(int framePointer, int nodePointer) { 3591 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3592 nodePointer); 3593 } 3594 3595 /* 3596 * This class requests an Adapter for the WebTextView which shows past 3597 * entries stored in the database. It is a Runnable so that it can be done 3598 * in its own thread, without slowing down the UI. 3599 */ 3600 private class RequestFormData implements Runnable { 3601 private String mName; 3602 private String mUrl; 3603 private Message mUpdateMessage; 3604 3605 public RequestFormData(String name, String url, Message msg) { 3606 mName = name; 3607 mUrl = url; 3608 mUpdateMessage = msg; 3609 } 3610 3611 public void run() { 3612 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3613 if (pastEntries.size() > 0) { 3614 AutoCompleteAdapter adapter = new 3615 AutoCompleteAdapter(mContext, pastEntries); 3616 mUpdateMessage.obj = adapter; 3617 mUpdateMessage.sendToTarget(); 3618 } 3619 } 3620 } 3621 3622 /** 3623 * Dump the display tree to "/sdcard/displayTree.txt" 3624 * 3625 * @hide debug only 3626 */ 3627 public void dumpDisplayTree() { 3628 nativeDumpDisplayTree(getUrl()); 3629 } 3630 3631 /** 3632 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 3633 * "/sdcard/domTree.txt" 3634 * 3635 * @hide debug only 3636 */ 3637 public void dumpDomTree(boolean toFile) { 3638 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 3639 } 3640 3641 /** 3642 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 3643 * to "/sdcard/renderTree.txt" 3644 * 3645 * @hide debug only 3646 */ 3647 public void dumpRenderTree(boolean toFile) { 3648 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 3649 } 3650 3651 /** 3652 * Dump the V8 counters to standard output. 3653 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 3654 * true. Otherwise, this will do nothing. 3655 * 3656 * @hide debug only 3657 */ 3658 public void dumpV8Counters() { 3659 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 3660 } 3661 3662 // This is used to determine long press with the center key. Does not 3663 // affect long press with the trackball/touch. 3664 private boolean mGotCenterDown = false; 3665 3666 @Override 3667 public boolean onKeyDown(int keyCode, KeyEvent event) { 3668 if (DebugFlags.WEB_VIEW) { 3669 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3670 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3671 } 3672 3673 if (mNativeClass == 0) { 3674 return false; 3675 } 3676 3677 // do this hack up front, so it always works, regardless of touch-mode 3678 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3679 mAutoRedraw = !mAutoRedraw; 3680 if (mAutoRedraw) { 3681 invalidate(); 3682 } 3683 return true; 3684 } 3685 3686 // Bubble up the key event if 3687 // 1. it is a system key; or 3688 // 2. the host application wants to handle it; 3689 if (event.isSystem() 3690 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3691 return false; 3692 } 3693 3694 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3695 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3696 if (nativeFocusIsPlugin()) { 3697 mShiftIsPressed = true; 3698 } else if (!nativeCursorWantsKeyEvents() && !mShiftIsPressed) { 3699 setUpSelectXY(); 3700 } 3701 } 3702 3703 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3704 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3705 switchOutDrawHistory(); 3706 if (nativeFocusIsPlugin()) { 3707 letPluginHandleNavKey(keyCode, event.getEventTime(), true); 3708 return true; 3709 } 3710 if (mShiftIsPressed) { 3711 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 3712 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 3713 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 3714 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 3715 int multiplier = event.getRepeatCount() + 1; 3716 moveSelection(xRate * multiplier, yRate * multiplier); 3717 return true; 3718 } 3719 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 3720 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3721 return true; 3722 } 3723 // Bubble up the key event as WebView doesn't handle it 3724 return false; 3725 } 3726 3727 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3728 switchOutDrawHistory(); 3729 if (event.getRepeatCount() == 0) { 3730 if (mShiftIsPressed && !nativeFocusIsPlugin()) { 3731 return true; // discard press if copy in progress 3732 } 3733 mGotCenterDown = true; 3734 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3735 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3736 // Already checked mNativeClass, so we do not need to check it 3737 // again. 3738 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3739 return true; 3740 } 3741 // Bubble up the key event as WebView doesn't handle it 3742 return false; 3743 } 3744 3745 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3746 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3747 // turn off copy select if a shift-key combo is pressed 3748 mExtendSelection = mShiftIsPressed = false; 3749 if (mTouchMode == TOUCH_SELECT_MODE) { 3750 mTouchMode = TOUCH_INIT_MODE; 3751 } 3752 } 3753 3754 if (getSettings().getNavDump()) { 3755 switch (keyCode) { 3756 case KeyEvent.KEYCODE_4: 3757 dumpDisplayTree(); 3758 break; 3759 case KeyEvent.KEYCODE_5: 3760 case KeyEvent.KEYCODE_6: 3761 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 3762 break; 3763 case KeyEvent.KEYCODE_7: 3764 case KeyEvent.KEYCODE_8: 3765 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 3766 break; 3767 case KeyEvent.KEYCODE_9: 3768 nativeInstrumentReport(); 3769 return true; 3770 } 3771 } 3772 3773 if (nativeCursorIsTextInput()) { 3774 // This message will put the node in focus, for the DOM's notion 3775 // of focus, and make the focuscontroller active 3776 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3777 nativeCursorNodePointer()); 3778 // This will bring up the WebTextView and put it in focus, for 3779 // our view system's notion of focus 3780 rebuildWebTextView(); 3781 // Now we need to pass the event to it 3782 if (inEditingMode()) { 3783 mWebTextView.setDefaultSelection(); 3784 return mWebTextView.dispatchKeyEvent(event); 3785 } 3786 } else if (nativeHasFocusNode()) { 3787 // In this case, the cursor is not on a text input, but the focus 3788 // might be. Check it, and if so, hand over to the WebTextView. 3789 rebuildWebTextView(); 3790 if (inEditingMode()) { 3791 mWebTextView.setDefaultSelection(); 3792 return mWebTextView.dispatchKeyEvent(event); 3793 } 3794 } 3795 3796 // TODO: should we pass all the keys to DOM or check the meta tag 3797 if (nativeCursorWantsKeyEvents() || true) { 3798 // pass the key to DOM 3799 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3800 // return true as DOM handles the key 3801 return true; 3802 } 3803 3804 // Bubble up the key event as WebView doesn't handle it 3805 return false; 3806 } 3807 3808 @Override 3809 public boolean onKeyUp(int keyCode, KeyEvent event) { 3810 if (DebugFlags.WEB_VIEW) { 3811 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3812 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3813 } 3814 3815 if (mNativeClass == 0) { 3816 return false; 3817 } 3818 3819 // special CALL handling when cursor node's href is "tel:XXX" 3820 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3821 String text = nativeCursorText(); 3822 if (!nativeCursorIsTextInput() && text != null 3823 && text.startsWith(SCHEME_TEL)) { 3824 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3825 getContext().startActivity(intent); 3826 return true; 3827 } 3828 } 3829 3830 // Bubble up the key event if 3831 // 1. it is a system key; or 3832 // 2. the host application wants to handle it; 3833 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3834 return false; 3835 } 3836 3837 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3838 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3839 if (nativeFocusIsPlugin()) { 3840 mShiftIsPressed = false; 3841 } else if (commitCopy()) { 3842 return true; 3843 } 3844 } 3845 3846 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3847 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3848 if (nativeFocusIsPlugin()) { 3849 letPluginHandleNavKey(keyCode, event.getEventTime(), false); 3850 return true; 3851 } 3852 // always handle the navigation keys in the UI thread 3853 // Bubble up the key event as WebView doesn't handle it 3854 return false; 3855 } 3856 3857 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3858 // remove the long press message first 3859 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3860 mGotCenterDown = false; 3861 3862 if (mShiftIsPressed && !nativeFocusIsPlugin()) { 3863 if (mExtendSelection) { 3864 commitCopy(); 3865 } else { 3866 mExtendSelection = true; 3867 invalidate(); // draw the i-beam instead of the arrow 3868 } 3869 return true; // discard press if copy in progress 3870 } 3871 3872 // perform the single click 3873 Rect visibleRect = sendOurVisibleRect(); 3874 // Note that sendOurVisibleRect calls viewToContent, so the 3875 // coordinates should be in content coordinates. 3876 if (!nativeCursorIntersects(visibleRect)) { 3877 return false; 3878 } 3879 WebViewCore.CursorData data = cursorData(); 3880 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3881 playSoundEffect(SoundEffectConstants.CLICK); 3882 if (nativeCursorIsTextInput()) { 3883 rebuildWebTextView(); 3884 centerKeyPressOnTextField(); 3885 if (inEditingMode()) { 3886 mWebTextView.setDefaultSelection(); 3887 } 3888 return true; 3889 } 3890 clearTextEntry(true); 3891 nativeSetFollowedLink(true); 3892 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 3893 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3894 nativeCursorNodePointer()); 3895 } 3896 return true; 3897 } 3898 3899 // TODO: should we pass all the keys to DOM or check the meta tag 3900 if (nativeCursorWantsKeyEvents() || true) { 3901 // pass the key to DOM 3902 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3903 // return true as DOM handles the key 3904 return true; 3905 } 3906 3907 // Bubble up the key event as WebView doesn't handle it 3908 return false; 3909 } 3910 3911 private void setUpSelectXY() { 3912 mExtendSelection = false; 3913 mShiftIsPressed = true; 3914 if (nativeHasCursorNode()) { 3915 Rect rect = nativeCursorNodeBounds(); 3916 mSelectX = contentToViewX(rect.left); 3917 mSelectY = contentToViewY(rect.top); 3918 } else if (mLastTouchY > getVisibleTitleHeight()) { 3919 mSelectX = mScrollX + (int) mLastTouchX; 3920 mSelectY = mScrollY + (int) mLastTouchY; 3921 } else { 3922 mSelectX = mScrollX + getViewWidth() / 2; 3923 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 3924 } 3925 nativeHideCursor(); 3926 } 3927 3928 /** 3929 * Use this method to put the WebView into text selection mode. 3930 * Do not rely on this functionality; it will be deprecated in the future. 3931 */ 3932 public void emulateShiftHeld() { 3933 if (0 == mNativeClass) return; // client isn't initialized 3934 setUpSelectXY(); 3935 } 3936 3937 private boolean commitCopy() { 3938 boolean copiedSomething = false; 3939 if (mExtendSelection) { 3940 String selection = nativeGetSelection(); 3941 if (selection != "") { 3942 if (DebugFlags.WEB_VIEW) { 3943 Log.v(LOGTAG, "commitCopy \"" + selection + "\""); 3944 } 3945 Toast.makeText(mContext 3946 , com.android.internal.R.string.text_copied 3947 , Toast.LENGTH_SHORT).show(); 3948 copiedSomething = true; 3949 try { 3950 IClipboard clip = IClipboard.Stub.asInterface( 3951 ServiceManager.getService("clipboard")); 3952 clip.setClipboardText(selection); 3953 } catch (android.os.RemoteException e) { 3954 Log.e(LOGTAG, "Clipboard failed", e); 3955 } 3956 } 3957 mExtendSelection = false; 3958 } 3959 mShiftIsPressed = false; 3960 invalidate(); // remove selection region and pointer 3961 if (mTouchMode == TOUCH_SELECT_MODE) { 3962 mTouchMode = TOUCH_INIT_MODE; 3963 } 3964 return copiedSomething; 3965 } 3966 3967 @Override 3968 protected void onAttachedToWindow() { 3969 super.onAttachedToWindow(); 3970 if (hasWindowFocus()) setActive(true); 3971 } 3972 3973 @Override 3974 protected void onDetachedFromWindow() { 3975 clearTextEntry(false); 3976 dismissZoomControl(); 3977 if (hasWindowFocus()) setActive(false); 3978 super.onDetachedFromWindow(); 3979 } 3980 3981 /** 3982 * @deprecated WebView no longer needs to implement 3983 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3984 */ 3985 @Deprecated 3986 public void onChildViewAdded(View parent, View child) {} 3987 3988 /** 3989 * @deprecated WebView no longer needs to implement 3990 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3991 */ 3992 @Deprecated 3993 public void onChildViewRemoved(View p, View child) {} 3994 3995 /** 3996 * @deprecated WebView should not have implemented 3997 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3998 * does nothing now. 3999 */ 4000 @Deprecated 4001 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4002 } 4003 4004 private void setActive(boolean active) { 4005 if (active) { 4006 if (hasFocus()) { 4007 // If our window regained focus, and we have focus, then begin 4008 // drawing the cursor ring 4009 mDrawCursorRing = true; 4010 if (mNativeClass != 0) { 4011 nativeRecordButtons(true, false, true); 4012 if (inEditingMode()) { 4013 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 4014 } 4015 } 4016 } else { 4017 // If our window gained focus, but we do not have it, do not 4018 // draw the cursor ring. 4019 mDrawCursorRing = false; 4020 // We do not call nativeRecordButtons here because we assume 4021 // that when we lost focus, or window focus, it got called with 4022 // false for the first parameter 4023 } 4024 } else { 4025 if (mWebViewCore != null && getSettings().getBuiltInZoomControls() 4026 && (mZoomButtonsController == null || 4027 !mZoomButtonsController.isVisible())) { 4028 /* 4029 * The zoom controls come in their own window, so our window 4030 * loses focus. Our policy is to not draw the cursor ring if 4031 * our window is not focused, but this is an exception since 4032 * the user can still navigate the web page with the zoom 4033 * controls showing. 4034 */ 4035 // If our window has lost focus, stop drawing the cursor ring 4036 mDrawCursorRing = false; 4037 } 4038 mGotKeyDown = false; 4039 mShiftIsPressed = false; 4040 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4041 mTouchMode = TOUCH_DONE_MODE; 4042 if (mNativeClass != 0) { 4043 nativeRecordButtons(false, false, true); 4044 } 4045 setFocusControllerInactive(); 4046 } 4047 invalidate(); 4048 } 4049 4050 // To avoid drawing the cursor ring, and remove the TextView when our window 4051 // loses focus. 4052 @Override 4053 public void onWindowFocusChanged(boolean hasWindowFocus) { 4054 setActive(hasWindowFocus); 4055 if (hasWindowFocus) { 4056 BrowserFrame.sJavaBridge.setActiveWebView(this); 4057 } else { 4058 BrowserFrame.sJavaBridge.removeActiveWebView(this); 4059 } 4060 super.onWindowFocusChanged(hasWindowFocus); 4061 } 4062 4063 /* 4064 * Pass a message to WebCore Thread, telling the WebCore::Page's 4065 * FocusController to be "inactive" so that it will 4066 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4067 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4068 */ 4069 /* package */ void setFocusControllerInactive() { 4070 // Do not need to also check whether mWebViewCore is null, because 4071 // mNativeClass is only set if mWebViewCore is non null 4072 if (mNativeClass == 0) return; 4073 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 4074 } 4075 4076 @Override 4077 protected void onFocusChanged(boolean focused, int direction, 4078 Rect previouslyFocusedRect) { 4079 if (DebugFlags.WEB_VIEW) { 4080 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4081 } 4082 if (focused) { 4083 // When we regain focus, if we have window focus, resume drawing 4084 // the cursor ring 4085 if (hasWindowFocus()) { 4086 mDrawCursorRing = true; 4087 if (mNativeClass != 0) { 4088 nativeRecordButtons(true, false, true); 4089 } 4090 //} else { 4091 // The WebView has gained focus while we do not have 4092 // windowfocus. When our window lost focus, we should have 4093 // called nativeRecordButtons(false...) 4094 } 4095 } else { 4096 // When we lost focus, unless focus went to the TextView (which is 4097 // true if we are in editing mode), stop drawing the cursor ring. 4098 if (!inEditingMode()) { 4099 mDrawCursorRing = false; 4100 if (mNativeClass != 0) { 4101 nativeRecordButtons(false, false, true); 4102 } 4103 setFocusControllerInactive(); 4104 } 4105 mGotKeyDown = false; 4106 } 4107 4108 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4109 } 4110 4111 /** 4112 * @hide 4113 */ 4114 @Override 4115 protected boolean setFrame(int left, int top, int right, int bottom) { 4116 boolean changed = super.setFrame(left, top, right, bottom); 4117 if (!changed && mHeightCanMeasure) { 4118 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4119 // in WebViewCore after we get the first layout. We do call 4120 // requestLayout() when we get contentSizeChanged(). But the View 4121 // system won't call onSizeChanged if the dimension is not changed. 4122 // In this case, we need to call sendViewSizeZoom() explicitly to 4123 // notify the WebKit about the new dimensions. 4124 sendViewSizeZoom(); 4125 } 4126 return changed; 4127 } 4128 4129 private static class PostScale implements Runnable { 4130 final WebView mWebView; 4131 final boolean mUpdateTextWrap; 4132 4133 public PostScale(WebView webView, boolean updateTextWrap) { 4134 mWebView = webView; 4135 mUpdateTextWrap = updateTextWrap; 4136 } 4137 4138 public void run() { 4139 if (mWebView.mWebViewCore != null) { 4140 // we always force, in case our height changed, in which case we 4141 // still want to send the notification over to webkit. 4142 mWebView.setNewZoomScale(mWebView.mActualScale, 4143 mUpdateTextWrap, true); 4144 // update the zoom buttons as the scale can be changed 4145 if (mWebView.getSettings().getBuiltInZoomControls()) { 4146 mWebView.updateZoomButtonsEnabled(); 4147 } 4148 } 4149 } 4150 } 4151 4152 @Override 4153 protected void onSizeChanged(int w, int h, int ow, int oh) { 4154 super.onSizeChanged(w, h, ow, oh); 4155 // Center zooming to the center of the screen. 4156 if (mZoomScale == 0) { // unless we're already zooming 4157 // To anchor at top left corner. 4158 mZoomCenterX = 0; 4159 mZoomCenterY = getVisibleTitleHeight(); 4160 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4161 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4162 } 4163 4164 // adjust the max viewport width depending on the view dimensions. This 4165 // is to ensure the scaling is not going insane. So do not shrink it if 4166 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4167 int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE); 4168 if (newMaxViewportWidth > sMaxViewportWidth) { 4169 sMaxViewportWidth = newMaxViewportWidth; 4170 } 4171 4172 // update mMinZoomScale if the minimum zoom scale is not fixed 4173 if (!mMinZoomScaleFixed) { 4174 // when change from narrow screen to wide screen, the new viewWidth 4175 // can be wider than the old content width. We limit the minimum 4176 // scale to 1.0f. The proper minimum scale will be calculated when 4177 // the new picture shows up. 4178 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 4179 / (mDrawHistory ? mHistoryPicture.getWidth() 4180 : mZoomOverviewWidth)); 4181 if (mInitialScaleInPercent > 0) { 4182 // limit the minZoomScale to the initialScale if it is set 4183 float initialScale = mInitialScaleInPercent / 100.0f; 4184 if (mMinZoomScale > initialScale) { 4185 mMinZoomScale = initialScale; 4186 } 4187 } 4188 } 4189 4190 dismissZoomControl(); 4191 4192 // onSizeChanged() is called during WebView layout. And any 4193 // requestLayout() is blocked during layout. As setNewZoomScale() will 4194 // call its child View to reposition itself through ViewManager's 4195 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 4196 // <b/> 4197 // only update the text wrap scale if width changed. 4198 post(new PostScale(this, w != ow)); 4199 } 4200 4201 @Override 4202 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4203 super.onScrollChanged(l, t, oldl, oldt); 4204 sendOurVisibleRect(); 4205 // update WebKit if visible title bar height changed. The logic is same 4206 // as getVisibleTitleHeight. 4207 int titleHeight = getTitleHeight(); 4208 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4209 sendViewSizeZoom(); 4210 } 4211 } 4212 4213 @Override 4214 public boolean dispatchKeyEvent(KeyEvent event) { 4215 boolean dispatch = true; 4216 4217 // Textfields and plugins need to receive the shift up key even if 4218 // another key was released while the shift key was held down. 4219 if (!inEditingMode() && (mNativeClass == 0 || !nativeFocusIsPlugin())) { 4220 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4221 mGotKeyDown = true; 4222 } else { 4223 if (!mGotKeyDown) { 4224 /* 4225 * We got a key up for which we were not the recipient of 4226 * the original key down. Don't give it to the view. 4227 */ 4228 dispatch = false; 4229 } 4230 mGotKeyDown = false; 4231 } 4232 } 4233 4234 if (dispatch) { 4235 return super.dispatchKeyEvent(event); 4236 } else { 4237 // We didn't dispatch, so let something else handle the key 4238 return false; 4239 } 4240 } 4241 4242 // Here are the snap align logic: 4243 // 1. If it starts nearly horizontally or vertically, snap align; 4244 // 2. If there is a dramitic direction change, let it go; 4245 // 3. If there is a same direction back and forth, lock it. 4246 4247 // adjustable parameters 4248 private int mMinLockSnapReverseDistance; 4249 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4250 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4251 4252 private static int sign(float x) { 4253 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4254 } 4255 4256 // if the page can scroll <= this value, we won't allow the drag tracker 4257 // to have any effect. 4258 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4259 4260 private class DragTrackerHandler { 4261 private final DragTracker mProxy; 4262 private final float mStartY, mStartX; 4263 private final float mMinDY, mMinDX; 4264 private final float mMaxDY, mMaxDX; 4265 private float mCurrStretchY, mCurrStretchX; 4266 private int mSX, mSY; 4267 private Interpolator mInterp; 4268 private float[] mXY = new float[2]; 4269 4270 // inner (non-state) classes can't have enums :( 4271 private static final int DRAGGING_STATE = 0; 4272 private static final int ANIMATING_STATE = 1; 4273 private static final int FINISHED_STATE = 2; 4274 private int mState; 4275 4276 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4277 mProxy = proxy; 4278 4279 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4280 int viewTop = getScrollY(); 4281 int viewBottom = viewTop + getHeight(); 4282 4283 mStartY = y; 4284 mMinDY = -viewTop; 4285 mMaxDY = docBottom - viewBottom; 4286 4287 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4288 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4289 " up/down= " + mMinDY + " " + mMaxDY); 4290 } 4291 4292 int docRight = computeHorizontalScrollRange(); 4293 int viewLeft = getScrollX(); 4294 int viewRight = viewLeft + getWidth(); 4295 mStartX = x; 4296 mMinDX = -viewLeft; 4297 mMaxDX = docRight - viewRight; 4298 4299 mState = DRAGGING_STATE; 4300 mProxy.onStartDrag(x, y); 4301 4302 // ensure we buildBitmap at least once 4303 mSX = -99999; 4304 } 4305 4306 private float computeStretch(float delta, float min, float max) { 4307 float stretch = 0; 4308 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4309 if (delta < min) { 4310 stretch = delta - min; 4311 } else if (delta > max) { 4312 stretch = delta - max; 4313 } 4314 } 4315 return stretch; 4316 } 4317 4318 public void dragTo(float x, float y) { 4319 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4320 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4321 4322 if ((mSnapScrollMode & SNAP_X) != 0) { 4323 sy = 0; 4324 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4325 sx = 0; 4326 } 4327 4328 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4329 mCurrStretchX = sx; 4330 mCurrStretchY = sy; 4331 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4332 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4333 " " + sy); 4334 } 4335 if (mProxy.onStretchChange(sx, sy)) { 4336 invalidate(); 4337 } 4338 } 4339 } 4340 4341 public void stopDrag() { 4342 final int DURATION = 200; 4343 int now = (int)SystemClock.uptimeMillis(); 4344 mInterp = new Interpolator(2); 4345 mXY[0] = mCurrStretchX; 4346 mXY[1] = mCurrStretchY; 4347 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4348 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4349 mInterp.setKeyFrame(0, now, mXY, blend); 4350 float[] zerozero = new float[] { 0, 0 }; 4351 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4352 mState = ANIMATING_STATE; 4353 4354 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4355 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4356 } 4357 } 4358 4359 // Call this after each draw. If it ruturns null, the tracker is done 4360 public boolean isFinished() { 4361 return mState == FINISHED_STATE; 4362 } 4363 4364 private int hiddenHeightOfTitleBar() { 4365 return getTitleHeight() - getVisibleTitleHeight(); 4366 } 4367 4368 // need a way to know if 565 or 8888 is the right config for 4369 // capturing the display and giving it to the drag proxy 4370 private Bitmap.Config offscreenBitmapConfig() { 4371 // hard code 565 for now 4372 return Bitmap.Config.RGB_565; 4373 } 4374 4375 /* If the tracker draws, then this returns true, otherwise it will 4376 return false, and draw nothing. 4377 */ 4378 public boolean draw(Canvas canvas) { 4379 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4380 int sx = getScrollX(); 4381 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4382 if (mSX != sx || mSY != sy) { 4383 buildBitmap(sx, sy); 4384 mSX = sx; 4385 mSY = sy; 4386 } 4387 4388 if (mState == ANIMATING_STATE) { 4389 Interpolator.Result result = mInterp.timeToValues(mXY); 4390 if (result == Interpolator.Result.FREEZE_END) { 4391 mState = FINISHED_STATE; 4392 return false; 4393 } else { 4394 mProxy.onStretchChange(mXY[0], mXY[1]); 4395 invalidate(); 4396 // fall through to the draw 4397 } 4398 } 4399 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4400 canvas.translate(sx, sy); 4401 mProxy.onDraw(canvas); 4402 canvas.restoreToCount(count); 4403 return true; 4404 } 4405 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4406 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4407 mCurrStretchX + " " + mCurrStretchY); 4408 } 4409 return false; 4410 } 4411 4412 private void buildBitmap(int sx, int sy) { 4413 int w = getWidth(); 4414 int h = getViewHeight(); 4415 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4416 Canvas canvas = new Canvas(bm); 4417 canvas.translate(-sx, -sy); 4418 drawContent(canvas); 4419 4420 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4421 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4422 " " + sy + " " + w + " " + h); 4423 } 4424 mProxy.onBitmapChange(bm); 4425 } 4426 } 4427 4428 /** @hide */ 4429 public static class DragTracker { 4430 public void onStartDrag(float x, float y) {} 4431 public boolean onStretchChange(float sx, float sy) { 4432 // return true to have us inval the view 4433 return false; 4434 } 4435 public void onStopDrag() {} 4436 public void onBitmapChange(Bitmap bm) {} 4437 public void onDraw(Canvas canvas) {} 4438 } 4439 4440 /** @hide */ 4441 public DragTracker getDragTracker() { 4442 return mDragTracker; 4443 } 4444 4445 /** @hide */ 4446 public void setDragTracker(DragTracker tracker) { 4447 mDragTracker = tracker; 4448 } 4449 4450 private DragTracker mDragTracker; 4451 private DragTrackerHandler mDragTrackerHandler; 4452 4453 private class ScaleDetectorListener implements 4454 ScaleGestureDetector.OnScaleGestureListener { 4455 4456 public boolean onScaleBegin(ScaleGestureDetector detector) { 4457 // cancel the single touch handling 4458 cancelTouch(); 4459 dismissZoomControl(); 4460 // reset the zoom overview mode so that the page won't auto grow 4461 mInZoomOverview = false; 4462 // If it is in password mode, turn it off so it does not draw 4463 // misplaced. 4464 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4465 mWebTextView.setInPassword(false); 4466 } 4467 4468 mViewManager.startZoom(); 4469 4470 return true; 4471 } 4472 4473 public void onScaleEnd(ScaleGestureDetector detector) { 4474 if (mPreviewZoomOnly) { 4475 mPreviewZoomOnly = false; 4476 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4477 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4478 // don't reflow when zoom in; when zoom out, do reflow if the 4479 // new scale is almost minimum scale; 4480 boolean reflowNow = (mActualScale - mMinZoomScale 4481 <= MINIMUM_SCALE_INCREMENT) 4482 || ((mActualScale <= 0.8 * mTextWrapScale)); 4483 // force zoom after mPreviewZoomOnly is set to false so that the 4484 // new view size will be passed to the WebKit 4485 setNewZoomScale(mActualScale, reflowNow, true); 4486 // call invalidate() to draw without zoom filter 4487 invalidate(); 4488 } 4489 // adjust the edit text view if needed 4490 if (inEditingMode() && didUpdateTextViewBounds(false) 4491 && nativeFocusCandidateIsPassword()) { 4492 // If it is a password field, start drawing the 4493 // WebTextView once again. 4494 mWebTextView.setInPassword(true); 4495 } 4496 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4497 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4498 // may trigger the unwanted fling. 4499 mTouchMode = TOUCH_PINCH_DRAG; 4500 mConfirmMove = true; 4501 startTouch(detector.getFocusX(), detector.getFocusY(), 4502 mLastTouchTime); 4503 4504 mViewManager.endZoom(); 4505 } 4506 4507 public boolean onScale(ScaleGestureDetector detector) { 4508 float scale = (float) (Math.round(detector.getScaleFactor() 4509 * mActualScale * 100) / 100.0); 4510 if (Math.abs(scale - mActualScale) >= MINIMUM_SCALE_INCREMENT) { 4511 mPreviewZoomOnly = true; 4512 // limit the scale change per step 4513 if (scale > mActualScale) { 4514 scale = Math.min(scale, mActualScale * 1.25f); 4515 } else { 4516 scale = Math.max(scale, mActualScale * 0.8f); 4517 } 4518 mZoomCenterX = detector.getFocusX(); 4519 mZoomCenterY = detector.getFocusY(); 4520 setNewZoomScale(scale, false, false); 4521 invalidate(); 4522 return true; 4523 } 4524 return false; 4525 } 4526 } 4527 4528 private boolean hitFocusedPlugin(int contentX, int contentY) { 4529 if (DebugFlags.WEB_VIEW) { 4530 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 4531 Rect r = nativeFocusNodeBounds(); 4532 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 4533 + ", " + r.right + ", " + r.bottom + ")"); 4534 } 4535 return nativeFocusIsPlugin() 4536 && nativeFocusNodeBounds().contains(contentX, contentY); 4537 } 4538 4539 private boolean shouldForwardTouchEvent() { 4540 return mFullScreenHolder != null || (mForwardTouchEvents 4541 && mTouchMode != TOUCH_SELECT_MODE 4542 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 4543 } 4544 4545 private boolean inFullScreenMode() { 4546 return mFullScreenHolder != null; 4547 } 4548 4549 @Override 4550 public boolean onTouchEvent(MotionEvent ev) { 4551 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4552 return false; 4553 } 4554 4555 if (DebugFlags.WEB_VIEW) { 4556 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4557 + mTouchMode); 4558 } 4559 4560 int action; 4561 float x, y; 4562 long eventTime = ev.getEventTime(); 4563 4564 // FIXME: we may consider to give WebKit an option to handle multi-touch 4565 // events later. 4566 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 4567 if (mMinZoomScale < mMaxZoomScale) { 4568 mScaleDetector.onTouchEvent(ev); 4569 if (mScaleDetector.isInProgress()) { 4570 mLastTouchTime = eventTime; 4571 return true; 4572 } 4573 x = mScaleDetector.getFocusX(); 4574 y = mScaleDetector.getFocusY(); 4575 action = ev.getAction() & MotionEvent.ACTION_MASK; 4576 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4577 cancelTouch(); 4578 action = MotionEvent.ACTION_DOWN; 4579 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4580 // set mLastTouchX/Y to the remaining point 4581 mLastTouchX = x; 4582 mLastTouchY = y; 4583 } else if (action == MotionEvent.ACTION_MOVE) { 4584 // negative x or y indicate it is on the edge, skip it. 4585 if (x < 0 || y < 0) { 4586 return true; 4587 } 4588 } 4589 } else { 4590 // if the page disallow zoom, skip multi-pointer action 4591 return true; 4592 } 4593 } else { 4594 action = ev.getAction(); 4595 x = ev.getX(); 4596 y = ev.getY(); 4597 } 4598 4599 // Due to the touch screen edge effect, a touch closer to the edge 4600 // always snapped to the edge. As getViewWidth() can be different from 4601 // getWidth() due to the scrollbar, adjusting the point to match 4602 // getViewWidth(). Same applied to the height. 4603 if (x > getViewWidth() - 1) { 4604 x = getViewWidth() - 1; 4605 } 4606 if (y > getViewHeightWithTitle() - 1) { 4607 y = getViewHeightWithTitle() - 1; 4608 } 4609 4610 float fDeltaX = mLastTouchX - x; 4611 float fDeltaY = mLastTouchY - y; 4612 int deltaX = (int) fDeltaX; 4613 int deltaY = (int) fDeltaY; 4614 int contentX = viewToContentX((int) x + mScrollX); 4615 int contentY = viewToContentY((int) y + mScrollY); 4616 4617 switch (action) { 4618 case MotionEvent.ACTION_DOWN: { 4619 mPreventDefault = PREVENT_DEFAULT_NO; 4620 mConfirmMove = false; 4621 if (!mScroller.isFinished()) { 4622 // stop the current scroll animation, but if this is 4623 // the start of a fling, allow it to add to the current 4624 // fling's velocity 4625 mScroller.abortAnimation(); 4626 mTouchMode = TOUCH_DRAG_START_MODE; 4627 mConfirmMove = true; 4628 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 4629 } else if (!inFullScreenMode() && mShiftIsPressed) { 4630 mSelectX = mScrollX + (int) x; 4631 mSelectY = mScrollY + (int) y; 4632 mTouchMode = TOUCH_SELECT_MODE; 4633 if (DebugFlags.WEB_VIEW) { 4634 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 4635 } 4636 nativeMoveSelection(contentX, contentY, false); 4637 mTouchSelection = mExtendSelection = true; 4638 invalidate(); // draw the i-beam instead of the arrow 4639 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4640 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4641 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4642 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4643 } else { 4644 // commit the short press action for the previous tap 4645 doShortPress(); 4646 mTouchMode = TOUCH_INIT_MODE; 4647 mDeferTouchProcess = (!inFullScreenMode() 4648 && mForwardTouchEvents) ? hitFocusedPlugin( 4649 contentX, contentY) : false; 4650 } 4651 } else { // the normal case 4652 mPreviewZoomOnly = false; 4653 mTouchMode = TOUCH_INIT_MODE; 4654 mDeferTouchProcess = (!inFullScreenMode() 4655 && mForwardTouchEvents) ? hitFocusedPlugin( 4656 contentX, contentY) : false; 4657 mWebViewCore.sendMessage( 4658 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4659 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4660 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 4661 (eventTime - mLastTouchUpTime), eventTime); 4662 } 4663 } 4664 // Trigger the link 4665 if (mTouchMode == TOUCH_INIT_MODE 4666 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4667 mPrivateHandler.sendEmptyMessageDelayed( 4668 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 4669 mPrivateHandler.sendEmptyMessageDelayed( 4670 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 4671 if (inFullScreenMode() || mDeferTouchProcess) { 4672 mPreventDefault = PREVENT_DEFAULT_YES; 4673 } else if (mForwardTouchEvents) { 4674 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 4675 } else { 4676 mPreventDefault = PREVENT_DEFAULT_NO; 4677 } 4678 // pass the touch events from UI thread to WebCore thread 4679 if (shouldForwardTouchEvent()) { 4680 TouchEventData ted = new TouchEventData(); 4681 ted.mAction = action; 4682 ted.mX = contentX; 4683 ted.mY = contentY; 4684 ted.mMetaState = ev.getMetaState(); 4685 ted.mReprocess = mDeferTouchProcess; 4686 if (mDeferTouchProcess) { 4687 // still needs to set them for compute deltaX/Y 4688 mLastTouchX = x; 4689 mLastTouchY = y; 4690 ted.mViewX = x; 4691 ted.mViewY = y; 4692 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4693 break; 4694 } 4695 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4696 if (!inFullScreenMode()) { 4697 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4698 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4699 action, 0), TAP_TIMEOUT); 4700 } 4701 } 4702 } 4703 startTouch(x, y, eventTime); 4704 break; 4705 } 4706 case MotionEvent.ACTION_MOVE: { 4707 boolean firstMove = false; 4708 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 4709 >= mTouchSlopSquare) { 4710 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4711 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4712 mConfirmMove = true; 4713 firstMove = true; 4714 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4715 mTouchMode = TOUCH_INIT_MODE; 4716 } 4717 } 4718 // pass the touch events from UI thread to WebCore thread 4719 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 4720 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 4721 mLastSentTouchTime = eventTime; 4722 TouchEventData ted = new TouchEventData(); 4723 ted.mAction = action; 4724 ted.mX = contentX; 4725 ted.mY = contentY; 4726 ted.mMetaState = ev.getMetaState(); 4727 ted.mReprocess = mDeferTouchProcess; 4728 if (mDeferTouchProcess) { 4729 ted.mViewX = x; 4730 ted.mViewY = y; 4731 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4732 break; 4733 } 4734 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4735 if (firstMove && !inFullScreenMode()) { 4736 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4737 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4738 action, 0), TAP_TIMEOUT); 4739 } 4740 } 4741 if (mTouchMode == TOUCH_DONE_MODE 4742 || mPreventDefault == PREVENT_DEFAULT_YES) { 4743 // no dragging during scroll zoom animation, or when prevent 4744 // default is yes 4745 break; 4746 } 4747 if (mVelocityTracker == null) { 4748 Log.e(LOGTAG, "Got null mVelocityTracker when " 4749 + "mPreventDefault = " + mPreventDefault 4750 + " mDeferTouchProcess = " + mDeferTouchProcess 4751 + " mTouchMode = " + mTouchMode); 4752 } 4753 mVelocityTracker.addMovement(ev); 4754 if (mTouchMode != TOUCH_DRAG_MODE) { 4755 if (mTouchMode == TOUCH_SELECT_MODE) { 4756 mSelectX = mScrollX + (int) x; 4757 mSelectY = mScrollY + (int) y; 4758 if (DebugFlags.WEB_VIEW) { 4759 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 4760 } 4761 nativeMoveSelection(contentX, contentY, true); 4762 invalidate(); 4763 break; 4764 } 4765 if (!mConfirmMove) { 4766 break; 4767 } 4768 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 4769 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 4770 // track mLastTouchTime as we may need to do fling at 4771 // ACTION_UP 4772 mLastTouchTime = eventTime; 4773 break; 4774 } 4775 // if it starts nearly horizontal or vertical, enforce it 4776 int ax = Math.abs(deltaX); 4777 int ay = Math.abs(deltaY); 4778 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4779 mSnapScrollMode = SNAP_X; 4780 mSnapPositive = deltaX > 0; 4781 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4782 mSnapScrollMode = SNAP_Y; 4783 mSnapPositive = deltaY > 0; 4784 } 4785 4786 mTouchMode = TOUCH_DRAG_MODE; 4787 mLastTouchX = x; 4788 mLastTouchY = y; 4789 fDeltaX = 0.0f; 4790 fDeltaY = 0.0f; 4791 deltaX = 0; 4792 deltaY = 0; 4793 4794 startDrag(); 4795 } 4796 4797 if (mDragTrackerHandler != null) { 4798 mDragTrackerHandler.dragTo(x, y); 4799 } 4800 4801 // do pan 4802 int newScrollX = pinLocX(mScrollX + deltaX); 4803 int newDeltaX = newScrollX - mScrollX; 4804 if (deltaX != newDeltaX) { 4805 deltaX = newDeltaX; 4806 fDeltaX = (float) newDeltaX; 4807 } 4808 int newScrollY = pinLocY(mScrollY + deltaY); 4809 int newDeltaY = newScrollY - mScrollY; 4810 if (deltaY != newDeltaY) { 4811 deltaY = newDeltaY; 4812 fDeltaY = (float) newDeltaY; 4813 } 4814 boolean done = false; 4815 boolean keepScrollBarsVisible = false; 4816 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 4817 keepScrollBarsVisible = done = true; 4818 } else { 4819 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4820 int ax = Math.abs(deltaX); 4821 int ay = Math.abs(deltaY); 4822 if (mSnapScrollMode == SNAP_X) { 4823 // radical change means getting out of snap mode 4824 if (ay > MAX_SLOPE_FOR_DIAG * ax 4825 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4826 mSnapScrollMode = SNAP_NONE; 4827 } 4828 // reverse direction means lock in the snap mode 4829 if (ax > MAX_SLOPE_FOR_DIAG * ay && 4830 (mSnapPositive 4831 ? deltaX < -mMinLockSnapReverseDistance 4832 : deltaX > mMinLockSnapReverseDistance)) { 4833 mSnapScrollMode |= SNAP_LOCK; 4834 } 4835 } else { 4836 // radical change means getting out of snap mode 4837 if (ax > MAX_SLOPE_FOR_DIAG * ay 4838 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4839 mSnapScrollMode = SNAP_NONE; 4840 } 4841 // reverse direction means lock in the snap mode 4842 if (ay > MAX_SLOPE_FOR_DIAG * ax && 4843 (mSnapPositive 4844 ? deltaY < -mMinLockSnapReverseDistance 4845 : deltaY > mMinLockSnapReverseDistance)) { 4846 mSnapScrollMode |= SNAP_LOCK; 4847 } 4848 } 4849 } 4850 if (mSnapScrollMode != SNAP_NONE) { 4851 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 4852 deltaY = 0; 4853 } else { 4854 deltaX = 0; 4855 } 4856 } 4857 if ((deltaX | deltaY) != 0) { 4858 if (deltaX != 0) { 4859 mLastTouchX = x; 4860 } 4861 if (deltaY != 0) { 4862 mLastTouchY = y; 4863 } 4864 mHeldMotionless = MOTIONLESS_FALSE; 4865 } else { 4866 // keep the scrollbar on the screen even there is no 4867 // scroll 4868 keepScrollBarsVisible = true; 4869 } 4870 mLastTouchTime = eventTime; 4871 mUserScroll = true; 4872 } 4873 4874 doDrag(deltaX, deltaY); 4875 4876 if (keepScrollBarsVisible) { 4877 if (mHeldMotionless != MOTIONLESS_TRUE) { 4878 mHeldMotionless = MOTIONLESS_TRUE; 4879 invalidate(); 4880 } 4881 // keep the scrollbar on the screen even there is no scroll 4882 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 4883 false); 4884 // return false to indicate that we can't pan out of the 4885 // view space 4886 return !done; 4887 } 4888 break; 4889 } 4890 case MotionEvent.ACTION_UP: { 4891 // pass the touch events from UI thread to WebCore thread 4892 if (shouldForwardTouchEvent()) { 4893 TouchEventData ted = new TouchEventData(); 4894 ted.mAction = action; 4895 ted.mX = contentX; 4896 ted.mY = contentY; 4897 ted.mMetaState = ev.getMetaState(); 4898 ted.mReprocess = mDeferTouchProcess; 4899 if (mDeferTouchProcess) { 4900 ted.mViewX = x; 4901 ted.mViewY = y; 4902 } 4903 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4904 } 4905 mLastTouchUpTime = eventTime; 4906 switch (mTouchMode) { 4907 case TOUCH_DOUBLE_TAP_MODE: // double tap 4908 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4909 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4910 if (inFullScreenMode() || mDeferTouchProcess) { 4911 TouchEventData ted = new TouchEventData(); 4912 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 4913 ted.mX = contentX; 4914 ted.mY = contentY; 4915 ted.mMetaState = ev.getMetaState(); 4916 ted.mReprocess = mDeferTouchProcess; 4917 if (mDeferTouchProcess) { 4918 ted.mViewX = x; 4919 ted.mViewY = y; 4920 } 4921 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4922 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 4923 doDoubleTap(); 4924 mTouchMode = TOUCH_DONE_MODE; 4925 } 4926 break; 4927 case TOUCH_SELECT_MODE: 4928 commitCopy(); 4929 mTouchSelection = false; 4930 break; 4931 case TOUCH_INIT_MODE: // tap 4932 case TOUCH_SHORTPRESS_START_MODE: 4933 case TOUCH_SHORTPRESS_MODE: 4934 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4935 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4936 if (mConfirmMove) { 4937 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 4938 " WebCore's response for touch down."); 4939 if (mPreventDefault != PREVENT_DEFAULT_YES 4940 && (computeMaxScrollX() > 0 4941 || computeMaxScrollY() > 0)) { 4942 // UI takes control back, cancel WebCore touch 4943 cancelWebCoreTouchEvent(contentX, contentY, 4944 true); 4945 // we will not rewrite drag code here, but we 4946 // will try fling if it applies. 4947 WebViewCore.reducePriority(); 4948 // to get better performance, pause updating the 4949 // picture 4950 WebViewCore.pauseUpdatePicture(mWebViewCore); 4951 // fall through to TOUCH_DRAG_MODE 4952 } else { 4953 // WebKit may consume the touch event and modify 4954 // DOM. drawContentPicture() will be called with 4955 // animateSroll as true for better performance. 4956 // Force redraw in high-quality. 4957 invalidate(); 4958 break; 4959 } 4960 } else { 4961 if (mTouchMode == TOUCH_INIT_MODE) { 4962 mPrivateHandler.sendEmptyMessageDelayed( 4963 RELEASE_SINGLE_TAP, ViewConfiguration 4964 .getDoubleTapTimeout()); 4965 } else { 4966 doShortPress(); 4967 } 4968 break; 4969 } 4970 case TOUCH_DRAG_MODE: 4971 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4972 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4973 // if the user waits a while w/o moving before the 4974 // up, we don't want to do a fling 4975 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4976 if (mVelocityTracker == null) { 4977 Log.e(LOGTAG, "Got null mVelocityTracker when " 4978 + "mPreventDefault = " 4979 + mPreventDefault 4980 + " mDeferTouchProcess = " 4981 + mDeferTouchProcess); 4982 } 4983 mVelocityTracker.addMovement(ev); 4984 // set to MOTIONLESS_IGNORE so that it won't keep 4985 // removing and sending message in 4986 // drawCoreAndCursorRing() 4987 mHeldMotionless = MOTIONLESS_IGNORE; 4988 doFling(); 4989 break; 4990 } 4991 // redraw in high-quality, as we're done dragging 4992 mHeldMotionless = MOTIONLESS_TRUE; 4993 invalidate(); 4994 // fall through 4995 case TOUCH_DRAG_START_MODE: 4996 // TOUCH_DRAG_START_MODE should not happen for the real 4997 // device as we almost certain will get a MOVE. But this 4998 // is possible on emulator. 4999 mLastVelocity = 0; 5000 WebViewCore.resumePriority(); 5001 WebViewCore.resumeUpdatePicture(mWebViewCore); 5002 break; 5003 } 5004 stopTouch(); 5005 break; 5006 } 5007 case MotionEvent.ACTION_CANCEL: { 5008 if (mTouchMode == TOUCH_DRAG_MODE) { 5009 invalidate(); 5010 } 5011 cancelWebCoreTouchEvent(contentX, contentY, false); 5012 cancelTouch(); 5013 break; 5014 } 5015 } 5016 return true; 5017 } 5018 5019 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5020 if (shouldForwardTouchEvent()) { 5021 if (removeEvents) { 5022 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5023 } 5024 TouchEventData ted = new TouchEventData(); 5025 ted.mX = x; 5026 ted.mY = y; 5027 ted.mAction = MotionEvent.ACTION_CANCEL; 5028 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5029 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5030 } 5031 } 5032 5033 private void startTouch(float x, float y, long eventTime) { 5034 // Remember where the motion event started 5035 mLastTouchX = x; 5036 mLastTouchY = y; 5037 mLastTouchTime = eventTime; 5038 mVelocityTracker = VelocityTracker.obtain(); 5039 mSnapScrollMode = SNAP_NONE; 5040 if (mDragTracker != null) { 5041 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 5042 } 5043 } 5044 5045 private void startDrag() { 5046 WebViewCore.reducePriority(); 5047 // to get better performance, pause updating the picture 5048 WebViewCore.pauseUpdatePicture(mWebViewCore); 5049 if (!mDragFromTextInput) { 5050 nativeHideCursor(); 5051 } 5052 WebSettings settings = getSettings(); 5053 if (settings.supportZoom() 5054 && settings.getBuiltInZoomControls() 5055 && !getZoomButtonsController().isVisible() 5056 && mMinZoomScale < mMaxZoomScale 5057 && (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5058 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF)) { 5059 mZoomButtonsController.setVisible(true); 5060 int count = settings.getDoubleTapToastCount(); 5061 if (mInZoomOverview && count > 0) { 5062 settings.setDoubleTapToastCount(--count); 5063 Toast.makeText(mContext, 5064 com.android.internal.R.string.double_tap_toast, 5065 Toast.LENGTH_LONG).show(); 5066 } 5067 } 5068 } 5069 5070 private void doDrag(int deltaX, int deltaY) { 5071 if ((deltaX | deltaY) != 0) { 5072 scrollBy(deltaX, deltaY); 5073 } 5074 if (!getSettings().getBuiltInZoomControls()) { 5075 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 5076 if (mZoomControls != null && showPlusMinus) { 5077 if (mZoomControls.getVisibility() == View.VISIBLE) { 5078 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5079 } else { 5080 mZoomControls.show(showPlusMinus, false); 5081 } 5082 mPrivateHandler.postDelayed(mZoomControlRunnable, 5083 ZOOM_CONTROLS_TIMEOUT); 5084 } 5085 } 5086 } 5087 5088 private void stopTouch() { 5089 if (mDragTrackerHandler != null) { 5090 mDragTrackerHandler.stopDrag(); 5091 } 5092 // we also use mVelocityTracker == null to tell us that we are 5093 // not "moving around", so we can take the slower/prettier 5094 // mode in the drawing code 5095 if (mVelocityTracker != null) { 5096 mVelocityTracker.recycle(); 5097 mVelocityTracker = null; 5098 } 5099 } 5100 5101 private void cancelTouch() { 5102 if (mDragTrackerHandler != null) { 5103 mDragTrackerHandler.stopDrag(); 5104 } 5105 // we also use mVelocityTracker == null to tell us that we are 5106 // not "moving around", so we can take the slower/prettier 5107 // mode in the drawing code 5108 if (mVelocityTracker != null) { 5109 mVelocityTracker.recycle(); 5110 mVelocityTracker = null; 5111 } 5112 if (mTouchMode == TOUCH_DRAG_MODE) { 5113 WebViewCore.resumePriority(); 5114 WebViewCore.resumeUpdatePicture(mWebViewCore); 5115 } 5116 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5117 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5118 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5119 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5120 mHeldMotionless = MOTIONLESS_TRUE; 5121 mTouchMode = TOUCH_DONE_MODE; 5122 nativeHideCursor(); 5123 } 5124 5125 private long mTrackballFirstTime = 0; 5126 private long mTrackballLastTime = 0; 5127 private float mTrackballRemainsX = 0.0f; 5128 private float mTrackballRemainsY = 0.0f; 5129 private int mTrackballXMove = 0; 5130 private int mTrackballYMove = 0; 5131 private boolean mExtendSelection = false; 5132 private boolean mTouchSelection = false; 5133 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5134 private static final int TRACKBALL_TIMEOUT = 200; 5135 private static final int TRACKBALL_WAIT = 100; 5136 private static final int TRACKBALL_SCALE = 400; 5137 private static final int TRACKBALL_SCROLL_COUNT = 5; 5138 private static final int TRACKBALL_MOVE_COUNT = 10; 5139 private static final int TRACKBALL_MULTIPLIER = 3; 5140 private static final int SELECT_CURSOR_OFFSET = 16; 5141 private int mSelectX = 0; 5142 private int mSelectY = 0; 5143 private boolean mFocusSizeChanged = false; 5144 private boolean mShiftIsPressed = false; 5145 private boolean mTrackballDown = false; 5146 private long mTrackballUpTime = 0; 5147 private long mLastCursorTime = 0; 5148 private Rect mLastCursorBounds; 5149 5150 // Set by default; BrowserActivity clears to interpret trackball data 5151 // directly for movement. Currently, the framework only passes 5152 // arrow key events, not trackball events, from one child to the next 5153 private boolean mMapTrackballToArrowKeys = true; 5154 5155 public void setMapTrackballToArrowKeys(boolean setMap) { 5156 mMapTrackballToArrowKeys = setMap; 5157 } 5158 5159 void resetTrackballTime() { 5160 mTrackballLastTime = 0; 5161 } 5162 5163 @Override 5164 public boolean onTrackballEvent(MotionEvent ev) { 5165 long time = ev.getEventTime(); 5166 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5167 if (ev.getY() > 0) pageDown(true); 5168 if (ev.getY() < 0) pageUp(true); 5169 return true; 5170 } 5171 boolean shiftPressed = mShiftIsPressed && (mNativeClass == 0 5172 || !nativeFocusIsPlugin()); 5173 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5174 if (shiftPressed) { 5175 return true; // discard press if copy in progress 5176 } 5177 mTrackballDown = true; 5178 if (mNativeClass == 0) { 5179 return false; 5180 } 5181 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5182 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5183 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5184 nativeSelectBestAt(mLastCursorBounds); 5185 } 5186 if (DebugFlags.WEB_VIEW) { 5187 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5188 + " time=" + time 5189 + " mLastCursorTime=" + mLastCursorTime); 5190 } 5191 if (isInTouchMode()) requestFocusFromTouch(); 5192 return false; // let common code in onKeyDown at it 5193 } 5194 if (ev.getAction() == MotionEvent.ACTION_UP) { 5195 // LONG_PRESS_CENTER is set in common onKeyDown 5196 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5197 mTrackballDown = false; 5198 mTrackballUpTime = time; 5199 if (shiftPressed) { 5200 if (mExtendSelection) { 5201 commitCopy(); 5202 } else { 5203 mExtendSelection = true; 5204 invalidate(); // draw the i-beam instead of the arrow 5205 } 5206 return true; // discard press if copy in progress 5207 } 5208 if (DebugFlags.WEB_VIEW) { 5209 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5210 + " time=" + time 5211 ); 5212 } 5213 return false; // let common code in onKeyUp at it 5214 } 5215 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 5216 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5217 return false; 5218 } 5219 if (mTrackballDown) { 5220 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5221 return true; // discard move if trackball is down 5222 } 5223 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5224 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5225 return true; 5226 } 5227 // TODO: alternatively we can do panning as touch does 5228 switchOutDrawHistory(); 5229 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5230 if (DebugFlags.WEB_VIEW) { 5231 Log.v(LOGTAG, "onTrackballEvent time=" 5232 + time + " last=" + mTrackballLastTime); 5233 } 5234 mTrackballFirstTime = time; 5235 mTrackballXMove = mTrackballYMove = 0; 5236 } 5237 mTrackballLastTime = time; 5238 if (DebugFlags.WEB_VIEW) { 5239 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5240 } 5241 mTrackballRemainsX += ev.getX(); 5242 mTrackballRemainsY += ev.getY(); 5243 doTrackball(time); 5244 return true; 5245 } 5246 5247 void moveSelection(float xRate, float yRate) { 5248 if (mNativeClass == 0) 5249 return; 5250 int width = getViewWidth(); 5251 int height = getViewHeight(); 5252 mSelectX += xRate; 5253 mSelectY += yRate; 5254 int maxX = width + mScrollX; 5255 int maxY = height + mScrollY; 5256 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5257 , mSelectX)); 5258 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5259 , mSelectY)); 5260 if (DebugFlags.WEB_VIEW) { 5261 Log.v(LOGTAG, "moveSelection" 5262 + " mSelectX=" + mSelectX 5263 + " mSelectY=" + mSelectY 5264 + " mScrollX=" + mScrollX 5265 + " mScrollY=" + mScrollY 5266 + " xRate=" + xRate 5267 + " yRate=" + yRate 5268 ); 5269 } 5270 nativeMoveSelection(viewToContentX(mSelectX), 5271 viewToContentY(mSelectY), mExtendSelection); 5272 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5273 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5274 : 0; 5275 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5276 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5277 : 0; 5278 pinScrollBy(scrollX, scrollY, true, 0); 5279 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5280 requestRectangleOnScreen(select); 5281 invalidate(); 5282 } 5283 5284 private int scaleTrackballX(float xRate, int width) { 5285 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5286 int nextXMove = xMove; 5287 if (xMove > 0) { 5288 if (xMove > mTrackballXMove) { 5289 xMove -= mTrackballXMove; 5290 } 5291 } else if (xMove < mTrackballXMove) { 5292 xMove -= mTrackballXMove; 5293 } 5294 mTrackballXMove = nextXMove; 5295 return xMove; 5296 } 5297 5298 private int scaleTrackballY(float yRate, int height) { 5299 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5300 int nextYMove = yMove; 5301 if (yMove > 0) { 5302 if (yMove > mTrackballYMove) { 5303 yMove -= mTrackballYMove; 5304 } 5305 } else if (yMove < mTrackballYMove) { 5306 yMove -= mTrackballYMove; 5307 } 5308 mTrackballYMove = nextYMove; 5309 return yMove; 5310 } 5311 5312 private int keyCodeToSoundsEffect(int keyCode) { 5313 switch(keyCode) { 5314 case KeyEvent.KEYCODE_DPAD_UP: 5315 return SoundEffectConstants.NAVIGATION_UP; 5316 case KeyEvent.KEYCODE_DPAD_RIGHT: 5317 return SoundEffectConstants.NAVIGATION_RIGHT; 5318 case KeyEvent.KEYCODE_DPAD_DOWN: 5319 return SoundEffectConstants.NAVIGATION_DOWN; 5320 case KeyEvent.KEYCODE_DPAD_LEFT: 5321 return SoundEffectConstants.NAVIGATION_LEFT; 5322 } 5323 throw new IllegalArgumentException("keyCode must be one of " + 5324 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5325 "KEYCODE_DPAD_LEFT}."); 5326 } 5327 5328 private void doTrackball(long time) { 5329 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5330 if (elapsed == 0) { 5331 elapsed = TRACKBALL_TIMEOUT; 5332 } 5333 float xRate = mTrackballRemainsX * 1000 / elapsed; 5334 float yRate = mTrackballRemainsY * 1000 / elapsed; 5335 int viewWidth = getViewWidth(); 5336 int viewHeight = getViewHeight(); 5337 if (mShiftIsPressed && (mNativeClass == 0 || !nativeFocusIsPlugin())) { 5338 moveSelection(scaleTrackballX(xRate, viewWidth), 5339 scaleTrackballY(yRate, viewHeight)); 5340 mTrackballRemainsX = mTrackballRemainsY = 0; 5341 return; 5342 } 5343 float ax = Math.abs(xRate); 5344 float ay = Math.abs(yRate); 5345 float maxA = Math.max(ax, ay); 5346 if (DebugFlags.WEB_VIEW) { 5347 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5348 + " xRate=" + xRate 5349 + " yRate=" + yRate 5350 + " mTrackballRemainsX=" + mTrackballRemainsX 5351 + " mTrackballRemainsY=" + mTrackballRemainsY); 5352 } 5353 int width = mContentWidth - viewWidth; 5354 int height = mContentHeight - viewHeight; 5355 if (width < 0) width = 0; 5356 if (height < 0) height = 0; 5357 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5358 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5359 maxA = Math.max(ax, ay); 5360 int count = Math.max(0, (int) maxA); 5361 int oldScrollX = mScrollX; 5362 int oldScrollY = mScrollY; 5363 if (count > 0) { 5364 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5365 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5366 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5367 KeyEvent.KEYCODE_DPAD_RIGHT; 5368 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5369 if (DebugFlags.WEB_VIEW) { 5370 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5371 + " count=" + count 5372 + " mTrackballRemainsX=" + mTrackballRemainsX 5373 + " mTrackballRemainsY=" + mTrackballRemainsY); 5374 } 5375 if (mNativeClass != 0 && nativeFocusIsPlugin()) { 5376 for (int i = 0; i < count; i++) { 5377 letPluginHandleNavKey(selectKeyCode, time, true); 5378 } 5379 letPluginHandleNavKey(selectKeyCode, time, false); 5380 } else if (navHandledKey(selectKeyCode, count, false, time)) { 5381 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5382 } 5383 mTrackballRemainsX = mTrackballRemainsY = 0; 5384 } 5385 if (count >= TRACKBALL_SCROLL_COUNT) { 5386 int xMove = scaleTrackballX(xRate, width); 5387 int yMove = scaleTrackballY(yRate, height); 5388 if (DebugFlags.WEB_VIEW) { 5389 Log.v(LOGTAG, "doTrackball pinScrollBy" 5390 + " count=" + count 5391 + " xMove=" + xMove + " yMove=" + yMove 5392 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5393 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5394 ); 5395 } 5396 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5397 xMove = 0; 5398 } 5399 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5400 yMove = 0; 5401 } 5402 if (xMove != 0 || yMove != 0) { 5403 pinScrollBy(xMove, yMove, true, 0); 5404 } 5405 mUserScroll = true; 5406 } 5407 } 5408 5409 private int computeMaxScrollX() { 5410 return Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5411 } 5412 5413 private int computeMaxScrollY() { 5414 return Math.max(computeVerticalScrollRange() + getTitleHeight() 5415 - getViewHeightWithTitle(), 0); 5416 } 5417 5418 public void flingScroll(int vx, int vy) { 5419 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 5420 computeMaxScrollY()); 5421 invalidate(); 5422 } 5423 5424 private void doFling() { 5425 if (mVelocityTracker == null) { 5426 return; 5427 } 5428 int maxX = computeMaxScrollX(); 5429 int maxY = computeMaxScrollY(); 5430 5431 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5432 int vx = (int) mVelocityTracker.getXVelocity(); 5433 int vy = (int) mVelocityTracker.getYVelocity(); 5434 5435 if (mSnapScrollMode != SNAP_NONE) { 5436 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5437 vy = 0; 5438 } else { 5439 vx = 0; 5440 } 5441 } 5442 if (true /* EMG release: make our fling more like Maps' */) { 5443 // maps cuts their velocity in half 5444 vx = vx * 3 / 4; 5445 vy = vy * 3 / 4; 5446 } 5447 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5448 WebViewCore.resumePriority(); 5449 WebViewCore.resumeUpdatePicture(mWebViewCore); 5450 return; 5451 } 5452 float currentVelocity = mScroller.getCurrVelocity(); 5453 if (mLastVelocity > 0 && currentVelocity > 0) { 5454 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5455 - Math.atan2(vy, vx))); 5456 final float circle = (float) (Math.PI) * 2.0f; 5457 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5458 vx += currentVelocity * mLastVelX / mLastVelocity; 5459 vy += currentVelocity * mLastVelY / mLastVelocity; 5460 if (DebugFlags.WEB_VIEW) { 5461 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5462 } 5463 } else if (DebugFlags.WEB_VIEW) { 5464 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5465 } 5466 } else if (DebugFlags.WEB_VIEW) { 5467 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5468 + " current=" + currentVelocity 5469 + " vx=" + vx + " vy=" + vy 5470 + " maxX=" + maxX + " maxY=" + maxY 5471 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5472 } 5473 mLastVelX = vx; 5474 mLastVelY = vy; 5475 mLastVelocity = (float) Math.hypot(vx, vy); 5476 5477 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 5478 // TODO: duration is calculated based on velocity, if the range is 5479 // small, the animation will stop before duration is up. We may 5480 // want to calculate how long the animation is going to run to precisely 5481 // resume the webcore update. 5482 final int time = mScroller.getDuration(); 5483 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5484 awakenScrollBars(time); 5485 invalidate(); 5486 } 5487 5488 private boolean zoomWithPreview(float scale, boolean updateTextWrapScale) { 5489 float oldScale = mActualScale; 5490 mInitialScrollX = mScrollX; 5491 mInitialScrollY = mScrollY; 5492 5493 // snap to DEFAULT_SCALE if it is close 5494 if (Math.abs(scale - mDefaultScale) < MINIMUM_SCALE_INCREMENT) { 5495 scale = mDefaultScale; 5496 } 5497 5498 setNewZoomScale(scale, updateTextWrapScale, false); 5499 5500 if (oldScale != mActualScale) { 5501 // use mZoomPickerScale to see zoom preview first 5502 mZoomStart = SystemClock.uptimeMillis(); 5503 mInvInitialZoomScale = 1.0f / oldScale; 5504 mInvFinalZoomScale = 1.0f / mActualScale; 5505 mZoomScale = mActualScale; 5506 WebViewCore.pauseUpdatePicture(mWebViewCore); 5507 invalidate(); 5508 return true; 5509 } else { 5510 return false; 5511 } 5512 } 5513 5514 /** 5515 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5516 * in charge of installing this view to the view hierarchy. This view will 5517 * become visible when the user starts scrolling via touch and fade away if 5518 * the user does not interact with it. 5519 * <p/> 5520 * API version 3 introduces a built-in zoom mechanism that is shown 5521 * automatically by the MapView. This is the preferred approach for 5522 * showing the zoom UI. 5523 * 5524 * @deprecated The built-in zoom mechanism is preferred, see 5525 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5526 */ 5527 @Deprecated 5528 public View getZoomControls() { 5529 if (!getSettings().supportZoom()) { 5530 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5531 return null; 5532 } 5533 if (mZoomControls == null) { 5534 mZoomControls = createZoomControls(); 5535 5536 /* 5537 * need to be set to VISIBLE first so that getMeasuredHeight() in 5538 * {@link #onSizeChanged()} can return the measured value for proper 5539 * layout. 5540 */ 5541 mZoomControls.setVisibility(View.VISIBLE); 5542 mZoomControlRunnable = new Runnable() { 5543 public void run() { 5544 5545 /* Don't dismiss the controls if the user has 5546 * focus on them. Wait and check again later. 5547 */ 5548 if (!mZoomControls.hasFocus()) { 5549 mZoomControls.hide(); 5550 } else { 5551 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5552 mPrivateHandler.postDelayed(mZoomControlRunnable, 5553 ZOOM_CONTROLS_TIMEOUT); 5554 } 5555 } 5556 }; 5557 } 5558 return mZoomControls; 5559 } 5560 5561 private ExtendedZoomControls createZoomControls() { 5562 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 5563 , null); 5564 zoomControls.setOnZoomInClickListener(new OnClickListener() { 5565 public void onClick(View v) { 5566 // reset time out 5567 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5568 mPrivateHandler.postDelayed(mZoomControlRunnable, 5569 ZOOM_CONTROLS_TIMEOUT); 5570 zoomIn(); 5571 } 5572 }); 5573 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 5574 public void onClick(View v) { 5575 // reset time out 5576 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5577 mPrivateHandler.postDelayed(mZoomControlRunnable, 5578 ZOOM_CONTROLS_TIMEOUT); 5579 zoomOut(); 5580 } 5581 }); 5582 return zoomControls; 5583 } 5584 5585 /** 5586 * Gets the {@link ZoomButtonsController} which can be used to add 5587 * additional buttons to the zoom controls window. 5588 * 5589 * @return The instance of {@link ZoomButtonsController} used by this class, 5590 * or null if it is unavailable. 5591 * @hide 5592 */ 5593 public ZoomButtonsController getZoomButtonsController() { 5594 if (mZoomButtonsController == null) { 5595 mZoomButtonsController = new ZoomButtonsController(this); 5596 mZoomButtonsController.setOnZoomListener(mZoomListener); 5597 // ZoomButtonsController positions the buttons at the bottom, but in 5598 // the middle. Change their layout parameters so they appear on the 5599 // right. 5600 View controls = mZoomButtonsController.getZoomControls(); 5601 ViewGroup.LayoutParams params = controls.getLayoutParams(); 5602 if (params instanceof FrameLayout.LayoutParams) { 5603 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) params; 5604 frameParams.gravity = Gravity.RIGHT; 5605 } 5606 } 5607 return mZoomButtonsController; 5608 } 5609 5610 /** 5611 * Perform zoom in in the webview 5612 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 5613 */ 5614 public boolean zoomIn() { 5615 // TODO: alternatively we can disallow this during draw history mode 5616 switchOutDrawHistory(); 5617 mInZoomOverview = false; 5618 // Center zooming to the center of the screen. 5619 mZoomCenterX = getViewWidth() * .5f; 5620 mZoomCenterY = getViewHeight() * .5f; 5621 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5622 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5623 return zoomWithPreview(mActualScale * 1.25f, true); 5624 } 5625 5626 /** 5627 * Perform zoom out in the webview 5628 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 5629 */ 5630 public boolean zoomOut() { 5631 // TODO: alternatively we can disallow this during draw history mode 5632 switchOutDrawHistory(); 5633 // Center zooming to the center of the screen. 5634 mZoomCenterX = getViewWidth() * .5f; 5635 mZoomCenterY = getViewHeight() * .5f; 5636 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5637 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5638 return zoomWithPreview(mActualScale * 0.8f, true); 5639 } 5640 5641 private void updateSelection() { 5642 if (mNativeClass == 0) { 5643 return; 5644 } 5645 // mLastTouchX and mLastTouchY are the point in the current viewport 5646 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5647 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5648 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 5649 contentX + mNavSlop, contentY + mNavSlop); 5650 nativeSelectBestAt(rect); 5651 } 5652 5653 /** 5654 * Scroll the focused text field/area to match the WebTextView 5655 * @param xPercent New x position of the WebTextView from 0 to 1. 5656 * @param y New y position of the WebTextView in view coordinates 5657 */ 5658 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 5659 if (!inEditingMode() || mWebViewCore == null) { 5660 return; 5661 } 5662 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 5663 // Since this position is relative to the top of the text input 5664 // field, we do not need to take the title bar's height into 5665 // consideration. 5666 viewToContentDimension(y), 5667 new Float(xPercent)); 5668 } 5669 5670 /** 5671 * Set our starting point and time for a drag from the WebTextView. 5672 */ 5673 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 5674 if (!inEditingMode()) { 5675 return; 5676 } 5677 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 5678 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 5679 mLastTouchTime = eventTime; 5680 if (!mScroller.isFinished()) { 5681 abortAnimation(); 5682 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5683 } 5684 mSnapScrollMode = SNAP_NONE; 5685 mVelocityTracker = VelocityTracker.obtain(); 5686 mTouchMode = TOUCH_DRAG_START_MODE; 5687 } 5688 5689 /** 5690 * Given a motion event from the WebTextView, set its location to our 5691 * coordinates, and handle the event. 5692 */ 5693 /*package*/ boolean textFieldDrag(MotionEvent event) { 5694 if (!inEditingMode()) { 5695 return false; 5696 } 5697 mDragFromTextInput = true; 5698 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 5699 (float) (mWebTextView.getTop() - mScrollY)); 5700 boolean result = onTouchEvent(event); 5701 mDragFromTextInput = false; 5702 return result; 5703 } 5704 5705 /** 5706 * Due a touch up from a WebTextView. This will be handled by webkit to 5707 * change the selection. 5708 * @param event MotionEvent in the WebTextView's coordinates. 5709 */ 5710 /*package*/ void touchUpOnTextField(MotionEvent event) { 5711 if (!inEditingMode()) { 5712 return; 5713 } 5714 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 5715 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 5716 nativeMotionUp(x, y, mNavSlop); 5717 } 5718 5719 /** 5720 * Called when pressing the center key or trackball on a textfield. 5721 */ 5722 /*package*/ void centerKeyPressOnTextField() { 5723 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 5724 nativeCursorNodePointer()); 5725 } 5726 5727 private void doShortPress() { 5728 if (mNativeClass == 0) { 5729 return; 5730 } 5731 if (mPreventDefault == PREVENT_DEFAULT_YES) { 5732 return; 5733 } 5734 mTouchMode = TOUCH_DONE_MODE; 5735 switchOutDrawHistory(); 5736 // mLastTouchX and mLastTouchY are the point in the current viewport 5737 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5738 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5739 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 5740 WebViewCore.MotionUpData motionUpData = new WebViewCore 5741 .MotionUpData(); 5742 motionUpData.mFrame = nativeCacheHitFramePointer(); 5743 motionUpData.mNode = nativeCacheHitNodePointer(); 5744 motionUpData.mBounds = nativeCacheHitNodeBounds(); 5745 motionUpData.mX = contentX; 5746 motionUpData.mY = contentY; 5747 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 5748 motionUpData); 5749 } else { 5750 doMotionUp(contentX, contentY); 5751 } 5752 } 5753 5754 private void doMotionUp(int contentX, int contentY) { 5755 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 5756 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 5757 } 5758 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 5759 playSoundEffect(SoundEffectConstants.CLICK); 5760 } 5761 } 5762 5763 /* 5764 * Return true if the view (Plugin) is fully visible and maximized inside 5765 * the WebView. 5766 */ 5767 private boolean isPluginFitOnScreen(ViewManager.ChildView view) { 5768 int viewWidth = getViewWidth(); 5769 int viewHeight = getViewHeightWithTitle(); 5770 float scale = Math.min((float) viewWidth / view.width, 5771 (float) viewHeight / view.height); 5772 if (scale < mMinZoomScale) { 5773 scale = mMinZoomScale; 5774 } else if (scale > mMaxZoomScale) { 5775 scale = mMaxZoomScale; 5776 } 5777 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 5778 if (contentToViewX(view.x) >= mScrollX 5779 && contentToViewX(view.x + view.width) <= mScrollX 5780 + viewWidth 5781 && contentToViewY(view.y) >= mScrollY 5782 && contentToViewY(view.y + view.height) <= mScrollY 5783 + viewHeight) { 5784 return true; 5785 } 5786 } 5787 return false; 5788 } 5789 5790 /* 5791 * Maximize and center the rectangle, specified in the document coordinate 5792 * space, inside the WebView. If the zoom doesn't need to be changed, do an 5793 * animated scroll to center it. If the zoom needs to be changed, find the 5794 * zoom center and do a smooth zoom transition. 5795 */ 5796 private void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 5797 int viewWidth = getViewWidth(); 5798 int viewHeight = getViewHeightWithTitle(); 5799 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 5800 / docHeight); 5801 if (scale < mMinZoomScale) { 5802 scale = mMinZoomScale; 5803 } else if (scale > mMaxZoomScale) { 5804 scale = mMaxZoomScale; 5805 } 5806 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 5807 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 5808 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 5809 true, 0); 5810 } else { 5811 float oldScreenX = docX * mActualScale - mScrollX; 5812 float rectViewX = docX * scale; 5813 float rectViewWidth = docWidth * scale; 5814 float newMaxWidth = mContentWidth * scale; 5815 float newScreenX = (viewWidth - rectViewWidth) / 2; 5816 // pin the newX to the WebView 5817 if (newScreenX > rectViewX) { 5818 newScreenX = rectViewX; 5819 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 5820 newScreenX = viewWidth - (newMaxWidth - rectViewX); 5821 } 5822 mZoomCenterX = (oldScreenX * scale - newScreenX * mActualScale) 5823 / (scale - mActualScale); 5824 float oldScreenY = docY * mActualScale + getTitleHeight() 5825 - mScrollY; 5826 float rectViewY = docY * scale + getTitleHeight(); 5827 float rectViewHeight = docHeight * scale; 5828 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 5829 float newScreenY = (viewHeight - rectViewHeight) / 2; 5830 // pin the newY to the WebView 5831 if (newScreenY > rectViewY) { 5832 newScreenY = rectViewY; 5833 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 5834 newScreenY = viewHeight - (newMaxHeight - rectViewY); 5835 } 5836 mZoomCenterY = (oldScreenY * scale - newScreenY * mActualScale) 5837 / (scale - mActualScale); 5838 zoomWithPreview(scale, false); 5839 } 5840 } 5841 5842 void dismissZoomControl() { 5843 if (mWebViewCore == null) { 5844 // maybe called after WebView's destroy(). As we can't get settings, 5845 // just hide zoom control for both styles. 5846 if (mZoomButtonsController != null) { 5847 mZoomButtonsController.setVisible(false); 5848 } 5849 if (mZoomControls != null) { 5850 mZoomControls.hide(); 5851 } 5852 return; 5853 } 5854 WebSettings settings = getSettings(); 5855 if (settings.getBuiltInZoomControls()) { 5856 if (mZoomButtonsController != null) { 5857 mZoomButtonsController.setVisible(false); 5858 } 5859 } else { 5860 if (mZoomControlRunnable != null) { 5861 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5862 } 5863 if (mZoomControls != null) { 5864 mZoomControls.hide(); 5865 } 5866 } 5867 } 5868 5869 // Rule for double tap: 5870 // 1. if the current scale is not same as the text wrap scale and layout 5871 // algorithm is NARROW_COLUMNS, fit to column; 5872 // 2. if the current state is not overview mode, change to overview mode; 5873 // 3. if the current state is overview mode, change to default scale. 5874 private void doDoubleTap() { 5875 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 5876 return; 5877 } 5878 mZoomCenterX = mLastTouchX; 5879 mZoomCenterY = mLastTouchY; 5880 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5881 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5882 WebSettings settings = getSettings(); 5883 settings.setDoubleTapToastCount(0); 5884 // remove the zoom control after double tap 5885 dismissZoomControl(); 5886 ViewManager.ChildView plugin = mViewManager.hitTest(mAnchorX, mAnchorY); 5887 if (plugin != null) { 5888 if (isPluginFitOnScreen(plugin)) { 5889 mInZoomOverview = true; 5890 // Force the titlebar fully reveal in overview mode 5891 if (mScrollY < getTitleHeight()) mScrollY = 0; 5892 zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth, 5893 true); 5894 } else { 5895 mInZoomOverview = false; 5896 centerFitRect(plugin.x, plugin.y, plugin.width, plugin.height); 5897 } 5898 return; 5899 } 5900 boolean zoomToDefault = false; 5901 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 5902 && (Math.abs(mActualScale - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT)) { 5903 setNewZoomScale(mActualScale, true, true); 5904 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 5905 if (Math.abs(mActualScale - overviewScale) < MINIMUM_SCALE_INCREMENT) { 5906 mInZoomOverview = true; 5907 } 5908 } else if (!mInZoomOverview) { 5909 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 5910 if (Math.abs(mActualScale - newScale) >= MINIMUM_SCALE_INCREMENT) { 5911 mInZoomOverview = true; 5912 // Force the titlebar fully reveal in overview mode 5913 if (mScrollY < getTitleHeight()) mScrollY = 0; 5914 zoomWithPreview(newScale, true); 5915 } else if (Math.abs(mActualScale - mDefaultScale) >= MINIMUM_SCALE_INCREMENT) { 5916 zoomToDefault = true; 5917 } 5918 } else { 5919 zoomToDefault = true; 5920 } 5921 if (zoomToDefault) { 5922 mInZoomOverview = false; 5923 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 5924 if (left != NO_LEFTEDGE) { 5925 // add a 5pt padding to the left edge. 5926 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 5927 - mScrollX; 5928 // Re-calculate the zoom center so that the new scroll x will be 5929 // on the left edge. 5930 if (viewLeft > 0) { 5931 mZoomCenterX = viewLeft * mDefaultScale 5932 / (mDefaultScale - mActualScale); 5933 } else { 5934 scrollBy(viewLeft, 0); 5935 mZoomCenterX = 0; 5936 } 5937 } 5938 zoomWithPreview(mDefaultScale, true); 5939 } 5940 } 5941 5942 // Called by JNI to handle a touch on a node representing an email address, 5943 // address, or phone number 5944 private void overrideLoading(String url) { 5945 mCallbackProxy.uiOverrideUrlLoading(url); 5946 } 5947 5948 @Override 5949 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 5950 boolean result = false; 5951 if (inEditingMode()) { 5952 result = mWebTextView.requestFocus(direction, 5953 previouslyFocusedRect); 5954 } else { 5955 result = super.requestFocus(direction, previouslyFocusedRect); 5956 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 5957 // For cases such as GMail, where we gain focus from a direction, 5958 // we want to move to the first available link. 5959 // FIXME: If there are no visible links, we may not want to 5960 int fakeKeyDirection = 0; 5961 switch(direction) { 5962 case View.FOCUS_UP: 5963 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 5964 break; 5965 case View.FOCUS_DOWN: 5966 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 5967 break; 5968 case View.FOCUS_LEFT: 5969 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 5970 break; 5971 case View.FOCUS_RIGHT: 5972 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 5973 break; 5974 default: 5975 return result; 5976 } 5977 if (mNativeClass != 0 && !nativeHasCursorNode()) { 5978 navHandledKey(fakeKeyDirection, 1, true, 0); 5979 } 5980 } 5981 } 5982 return result; 5983 } 5984 5985 @Override 5986 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5987 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 5988 5989 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5990 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5991 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5992 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5993 5994 int measuredHeight = heightSize; 5995 int measuredWidth = widthSize; 5996 5997 // Grab the content size from WebViewCore. 5998 int contentHeight = contentToViewDimension(mContentHeight); 5999 int contentWidth = contentToViewDimension(mContentWidth); 6000 6001// Log.d(LOGTAG, "------- measure " + heightMode); 6002 6003 if (heightMode != MeasureSpec.EXACTLY) { 6004 mHeightCanMeasure = true; 6005 measuredHeight = contentHeight; 6006 if (heightMode == MeasureSpec.AT_MOST) { 6007 // If we are larger than the AT_MOST height, then our height can 6008 // no longer be measured and we should scroll internally. 6009 if (measuredHeight > heightSize) { 6010 measuredHeight = heightSize; 6011 mHeightCanMeasure = false; 6012 } 6013 } 6014 } else { 6015 mHeightCanMeasure = false; 6016 } 6017 if (mNativeClass != 0) { 6018 nativeSetHeightCanMeasure(mHeightCanMeasure); 6019 } 6020 // For the width, always use the given size unless unspecified. 6021 if (widthMode == MeasureSpec.UNSPECIFIED) { 6022 mWidthCanMeasure = true; 6023 measuredWidth = contentWidth; 6024 } else { 6025 mWidthCanMeasure = false; 6026 } 6027 6028 synchronized (this) { 6029 setMeasuredDimension(measuredWidth, measuredHeight); 6030 } 6031 } 6032 6033 @Override 6034 public boolean requestChildRectangleOnScreen(View child, 6035 Rect rect, 6036 boolean immediate) { 6037 rect.offset(child.getLeft() - child.getScrollX(), 6038 child.getTop() - child.getScrollY()); 6039 6040 Rect content = new Rect(viewToContentX(mScrollX), 6041 viewToContentY(mScrollY), 6042 viewToContentX(mScrollX + getWidth() 6043 - getVerticalScrollbarWidth()), 6044 viewToContentY(mScrollY + getViewHeightWithTitle())); 6045 content = nativeSubtractLayers(content); 6046 int screenTop = contentToViewY(content.top); 6047 int screenBottom = contentToViewY(content.bottom); 6048 int height = screenBottom - screenTop; 6049 int scrollYDelta = 0; 6050 6051 if (rect.bottom > screenBottom) { 6052 int oneThirdOfScreenHeight = height / 3; 6053 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6054 // If the rectangle is too tall to fit in the bottom two thirds 6055 // of the screen, place it at the top. 6056 scrollYDelta = rect.top - screenTop; 6057 } else { 6058 // If the rectangle will still fit on screen, we want its 6059 // top to be in the top third of the screen. 6060 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6061 } 6062 } else if (rect.top < screenTop) { 6063 scrollYDelta = rect.top - screenTop; 6064 } 6065 6066 int screenLeft = contentToViewX(content.left); 6067 int screenRight = contentToViewX(content.right); 6068 int width = screenRight - screenLeft; 6069 int scrollXDelta = 0; 6070 6071 if (rect.right > screenRight && rect.left > screenLeft) { 6072 if (rect.width() > width) { 6073 scrollXDelta += (rect.left - screenLeft); 6074 } else { 6075 scrollXDelta += (rect.right - screenRight); 6076 } 6077 } else if (rect.left < screenLeft) { 6078 scrollXDelta -= (screenLeft - rect.left); 6079 } 6080 6081 if ((scrollYDelta | scrollXDelta) != 0) { 6082 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6083 } 6084 6085 return false; 6086 } 6087 6088 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6089 String replace, int newStart, int newEnd) { 6090 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6091 arg.mReplace = replace; 6092 arg.mNewStart = newStart; 6093 arg.mNewEnd = newEnd; 6094 mTextGeneration++; 6095 arg.mTextGeneration = mTextGeneration; 6096 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6097 } 6098 6099 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6100 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6101 arg.mEvent = event; 6102 arg.mCurrentText = currentText; 6103 // Increase our text generation number, and pass it to webcore thread 6104 mTextGeneration++; 6105 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6106 // WebKit's document state is not saved until about to leave the page. 6107 // To make sure the host application, like Browser, has the up to date 6108 // document state when it goes to background, we force to save the 6109 // document state. 6110 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6111 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6112 cursorData(), 1000); 6113 } 6114 6115 /* package */ synchronized WebViewCore getWebViewCore() { 6116 return mWebViewCore; 6117 } 6118 6119 //------------------------------------------------------------------------- 6120 // Methods can be called from a separate thread, like WebViewCore 6121 // If it needs to call the View system, it has to send message. 6122 //------------------------------------------------------------------------- 6123 6124 /** 6125 * General handler to receive message coming from webkit thread 6126 */ 6127 class PrivateHandler extends Handler { 6128 @Override 6129 public void handleMessage(Message msg) { 6130 // exclude INVAL_RECT_MSG_ID since it is frequently output 6131 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6132 if (msg.what >= FIRST_PRIVATE_MSG_ID 6133 && msg.what <= LAST_PRIVATE_MSG_ID) { 6134 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6135 - FIRST_PRIVATE_MSG_ID]); 6136 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6137 && msg.what <= LAST_PACKAGE_MSG_ID) { 6138 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6139 - FIRST_PACKAGE_MSG_ID]); 6140 } else { 6141 Log.v(LOGTAG, Integer.toString(msg.what)); 6142 } 6143 } 6144 if (mWebViewCore == null) { 6145 // after WebView's destroy() is called, skip handling messages. 6146 return; 6147 } 6148 switch (msg.what) { 6149 case REMEMBER_PASSWORD: { 6150 mDatabase.setUsernamePassword( 6151 msg.getData().getString("host"), 6152 msg.getData().getString("username"), 6153 msg.getData().getString("password")); 6154 ((Message) msg.obj).sendToTarget(); 6155 break; 6156 } 6157 case NEVER_REMEMBER_PASSWORD: { 6158 mDatabase.setUsernamePassword( 6159 msg.getData().getString("host"), null, null); 6160 ((Message) msg.obj).sendToTarget(); 6161 break; 6162 } 6163 case PREVENT_DEFAULT_TIMEOUT: { 6164 // if timeout happens, cancel it so that it won't block UI 6165 // to continue handling touch events 6166 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6167 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6168 || (msg.arg1 == MotionEvent.ACTION_MOVE 6169 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6170 cancelWebCoreTouchEvent( 6171 viewToContentX((int) mLastTouchX + mScrollX), 6172 viewToContentY((int) mLastTouchY + mScrollY), 6173 true); 6174 } 6175 break; 6176 } 6177 case SWITCH_TO_SHORTPRESS: { 6178 if (mTouchMode == TOUCH_INIT_MODE) { 6179 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6180 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6181 updateSelection(); 6182 } else { 6183 // set to TOUCH_SHORTPRESS_MODE so that it won't 6184 // trigger double tap any more 6185 mTouchMode = TOUCH_SHORTPRESS_MODE; 6186 } 6187 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6188 mTouchMode = TOUCH_DONE_MODE; 6189 } 6190 break; 6191 } 6192 case SWITCH_TO_LONGPRESS: { 6193 if (inFullScreenMode() || mDeferTouchProcess) { 6194 TouchEventData ted = new TouchEventData(); 6195 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6196 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 6197 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 6198 // metaState for long press is tricky. Should it be the 6199 // state when the press started or when the press was 6200 // released? Or some intermediary key state? For 6201 // simplicity for now, we don't set it. 6202 ted.mMetaState = 0; 6203 ted.mReprocess = mDeferTouchProcess; 6204 if (mDeferTouchProcess) { 6205 ted.mViewX = mLastTouchX; 6206 ted.mViewY = mLastTouchY; 6207 } 6208 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6209 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6210 mTouchMode = TOUCH_DONE_MODE; 6211 performLongClick(); 6212 rebuildWebTextView(); 6213 } 6214 break; 6215 } 6216 case RELEASE_SINGLE_TAP: { 6217 doShortPress(); 6218 break; 6219 } 6220 case SCROLL_BY_MSG_ID: 6221 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6222 break; 6223 case SYNC_SCROLL_TO_MSG_ID: 6224 if (mUserScroll) { 6225 // if user has scrolled explicitly, don't sync the 6226 // scroll position any more 6227 mUserScroll = false; 6228 break; 6229 } 6230 // fall through 6231 case SCROLL_TO_MSG_ID: 6232 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6233 // if we can't scroll to the exact position due to pin, 6234 // send a message to WebCore to re-scroll when we get a 6235 // new picture 6236 mUserScroll = false; 6237 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6238 msg.arg1, msg.arg2); 6239 } 6240 break; 6241 case SPAWN_SCROLL_TO_MSG_ID: 6242 spawnContentScrollTo(msg.arg1, msg.arg2); 6243 break; 6244 case UPDATE_ZOOM_RANGE: { 6245 WebViewCore.RestoreState restoreState 6246 = (WebViewCore.RestoreState) msg.obj; 6247 // mScrollX contains the new minPrefWidth 6248 updateZoomRange(restoreState, getViewWidth(), 6249 restoreState.mScrollX, false); 6250 break; 6251 } 6252 case NEW_PICTURE_MSG_ID: { 6253 // If we've previously delayed deleting a root 6254 // layer, do it now. 6255 if (mDelayedDeleteRootLayer) { 6256 mDelayedDeleteRootLayer = false; 6257 nativeSetRootLayer(0); 6258 } 6259 WebSettings settings = mWebViewCore.getSettings(); 6260 // called for new content 6261 final int viewWidth = getViewWidth(); 6262 final WebViewCore.DrawData draw = 6263 (WebViewCore.DrawData) msg.obj; 6264 final Point viewSize = draw.mViewPoint; 6265 boolean useWideViewport = settings.getUseWideViewPort(); 6266 WebViewCore.RestoreState restoreState = draw.mRestoreState; 6267 boolean hasRestoreState = restoreState != null; 6268 if (hasRestoreState) { 6269 updateZoomRange(restoreState, viewSize.x, 6270 draw.mMinPrefWidth, true); 6271 if (!mDrawHistory) { 6272 mInZoomOverview = false; 6273 6274 if (mInitialScaleInPercent > 0) { 6275 setNewZoomScale(mInitialScaleInPercent / 100.0f, 6276 mInitialScaleInPercent != mTextWrapScale * 100, 6277 false); 6278 } else if (restoreState.mViewScale > 0) { 6279 mTextWrapScale = restoreState.mTextWrapScale; 6280 setNewZoomScale(restoreState.mViewScale, false, 6281 false); 6282 } else { 6283 mInZoomOverview = useWideViewport 6284 && settings.getLoadWithOverviewMode(); 6285 float scale; 6286 if (mInZoomOverview) { 6287 scale = (float) viewWidth 6288 / DEFAULT_VIEWPORT_WIDTH; 6289 } else { 6290 scale = restoreState.mTextWrapScale; 6291 } 6292 setNewZoomScale(scale, Math.abs(scale 6293 - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT, 6294 false); 6295 } 6296 setContentScrollTo(restoreState.mScrollX, 6297 restoreState.mScrollY); 6298 // As we are on a new page, remove the WebTextView. This 6299 // is necessary for page loads driven by webkit, and in 6300 // particular when the user was on a password field, so 6301 // the WebTextView was visible. 6302 clearTextEntry(false); 6303 // update the zoom buttons as the scale can be changed 6304 if (getSettings().getBuiltInZoomControls()) { 6305 updateZoomButtonsEnabled(); 6306 } 6307 } 6308 } 6309 // We update the layout (i.e. request a layout from the 6310 // view system) if the last view size that we sent to 6311 // WebCore matches the view size of the picture we just 6312 // received in the fixed dimension. 6313 final boolean updateLayout = viewSize.x == mLastWidthSent 6314 && viewSize.y == mLastHeightSent; 6315 recordNewContentSize(draw.mWidthHeight.x, 6316 draw.mWidthHeight.y 6317 + (mFindIsUp ? mFindHeight : 0), updateLayout); 6318 if (DebugFlags.WEB_VIEW) { 6319 Rect b = draw.mInvalRegion.getBounds(); 6320 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6321 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6322 } 6323 invalidateContentRect(draw.mInvalRegion.getBounds()); 6324 if (mPictureListener != null) { 6325 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6326 } 6327 if (useWideViewport) { 6328 // limit mZoomOverviewWidth upper bound to 6329 // sMaxViewportWidth so that if the page doesn't behave 6330 // well, the WebView won't go insane. limit the lower 6331 // bound to match the default scale for mobile sites. 6332 mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math 6333 .max((int) (viewWidth / mDefaultScale), Math 6334 .max(draw.mMinPrefWidth, 6335 draw.mViewPoint.x))); 6336 } 6337 if (!mMinZoomScaleFixed) { 6338 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 6339 } 6340 if (!mDrawHistory && mInZoomOverview) { 6341 // fit the content width to the current view. Ignore 6342 // the rounding error case. 6343 if (Math.abs((viewWidth * mInvActualScale) 6344 - mZoomOverviewWidth) > 1) { 6345 setNewZoomScale((float) viewWidth 6346 / mZoomOverviewWidth, Math.abs(mActualScale 6347 - mTextWrapScale) < MINIMUM_SCALE_INCREMENT, 6348 false); 6349 } 6350 } 6351 if (draw.mFocusSizeChanged && inEditingMode()) { 6352 mFocusSizeChanged = true; 6353 } 6354 if (hasRestoreState) { 6355 mViewManager.postReadyToDrawAll(); 6356 } 6357 break; 6358 } 6359 case WEBCORE_INITIALIZED_MSG_ID: 6360 // nativeCreate sets mNativeClass to a non-zero value 6361 nativeCreate(msg.arg1); 6362 break; 6363 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6364 // Make sure that the textfield is currently focused 6365 // and representing the same node as the pointer. 6366 if (inEditingMode() && 6367 mWebTextView.isSameTextField(msg.arg1)) { 6368 if (msg.getData().getBoolean("password")) { 6369 Spannable text = (Spannable) mWebTextView.getText(); 6370 int start = Selection.getSelectionStart(text); 6371 int end = Selection.getSelectionEnd(text); 6372 mWebTextView.setInPassword(true); 6373 // Restore the selection, which may have been 6374 // ruined by setInPassword. 6375 Spannable pword = 6376 (Spannable) mWebTextView.getText(); 6377 Selection.setSelection(pword, start, end); 6378 // If the text entry has created more events, ignore 6379 // this one. 6380 } else if (msg.arg2 == mTextGeneration) { 6381 mWebTextView.setTextAndKeepSelection( 6382 (String) msg.obj); 6383 } 6384 } 6385 break; 6386 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 6387 displaySoftKeyboard(true); 6388 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6389 (WebViewCore.TextSelectionData) msg.obj); 6390 break; 6391 case UPDATE_TEXT_SELECTION_MSG_ID: 6392 // If no textfield was in focus, and the user touched one, 6393 // causing it to send this message, then WebTextView has not 6394 // been set up yet. Rebuild it so it can set its selection. 6395 rebuildWebTextView(); 6396 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6397 (WebViewCore.TextSelectionData) msg.obj); 6398 break; 6399 case RETURN_LABEL: 6400 if (inEditingMode() 6401 && mWebTextView.isSameTextField(msg.arg1)) { 6402 mWebTextView.setHint((String) msg.obj); 6403 InputMethodManager imm 6404 = InputMethodManager.peekInstance(); 6405 // The hint is propagated to the IME in 6406 // onCreateInputConnection. If the IME is already 6407 // active, restart it so that its hint text is updated. 6408 if (imm != null && imm.isActive(mWebTextView)) { 6409 imm.restartInput(mWebTextView); 6410 } 6411 } 6412 break; 6413 case MOVE_OUT_OF_PLUGIN: 6414 navHandledKey(msg.arg1, 1, false, 0); 6415 break; 6416 case UPDATE_TEXT_ENTRY_MSG_ID: 6417 // this is sent after finishing resize in WebViewCore. Make 6418 // sure the text edit box is still on the screen. 6419 if (inEditingMode() && nativeCursorIsTextInput()) { 6420 mWebTextView.bringIntoView(); 6421 rebuildWebTextView(); 6422 } 6423 break; 6424 case CLEAR_TEXT_ENTRY: 6425 clearTextEntry(false); 6426 break; 6427 case INVAL_RECT_MSG_ID: { 6428 Rect r = (Rect)msg.obj; 6429 if (r == null) { 6430 invalidate(); 6431 } else { 6432 // we need to scale r from content into view coords, 6433 // which viewInvalidate() does for us 6434 viewInvalidate(r.left, r.top, r.right, r.bottom); 6435 } 6436 break; 6437 } 6438 case IMMEDIATE_REPAINT_MSG_ID: { 6439 invalidate(); 6440 break; 6441 } 6442 case SET_ROOT_LAYER_MSG_ID: { 6443 if (0 == msg.arg1) { 6444 // Null indicates deleting the old layer, but 6445 // don't actually do so until we've got the 6446 // new page to display. 6447 mDelayedDeleteRootLayer = true; 6448 } else { 6449 mDelayedDeleteRootLayer = false; 6450 nativeSetRootLayer(msg.arg1); 6451 invalidate(); 6452 } 6453 break; 6454 } 6455 case REQUEST_FORM_DATA: 6456 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6457 if (mWebTextView.isSameTextField(msg.arg1)) { 6458 mWebTextView.setAdapterCustom(adapter); 6459 } 6460 break; 6461 case RESUME_WEBCORE_PRIORITY: 6462 WebViewCore.resumePriority(); 6463 WebViewCore.resumeUpdatePicture(mWebViewCore); 6464 break; 6465 6466 case LONG_PRESS_CENTER: 6467 // as this is shared by keydown and trackballdown, reset all 6468 // the states 6469 mGotCenterDown = false; 6470 mTrackballDown = false; 6471 performLongClick(); 6472 break; 6473 6474 case WEBCORE_NEED_TOUCH_EVENTS: 6475 mForwardTouchEvents = (msg.arg1 != 0); 6476 break; 6477 6478 case PREVENT_TOUCH_ID: 6479 if (inFullScreenMode()) { 6480 break; 6481 } 6482 if (msg.obj == null) { 6483 if (msg.arg1 == MotionEvent.ACTION_DOWN 6484 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 6485 // if prevent default is called from WebCore, UI 6486 // will not handle the rest of the touch events any 6487 // more. 6488 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6489 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 6490 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 6491 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6492 // the return for the first ACTION_MOVE will decide 6493 // whether UI will handle touch or not. Currently no 6494 // support for alternating prevent default 6495 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6496 : PREVENT_DEFAULT_NO; 6497 } 6498 } else if (msg.arg2 == 0) { 6499 // prevent default is not called in WebCore, so the 6500 // message needs to be reprocessed in UI 6501 TouchEventData ted = (TouchEventData) msg.obj; 6502 switch (ted.mAction) { 6503 case MotionEvent.ACTION_DOWN: 6504 mLastDeferTouchX = ted.mViewX; 6505 mLastDeferTouchY = ted.mViewY; 6506 mDeferTouchMode = TOUCH_INIT_MODE; 6507 break; 6508 case MotionEvent.ACTION_MOVE: { 6509 // no snapping in defer process 6510 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 6511 mDeferTouchMode = TOUCH_DRAG_MODE; 6512 mLastDeferTouchX = ted.mViewX; 6513 mLastDeferTouchY = ted.mViewY; 6514 startDrag(); 6515 } 6516 int deltaX = pinLocX((int) (mScrollX 6517 + mLastDeferTouchX - ted.mViewX)) 6518 - mScrollX; 6519 int deltaY = pinLocY((int) (mScrollY 6520 + mLastDeferTouchY - ted.mViewY)) 6521 - mScrollY; 6522 doDrag(deltaX, deltaY); 6523 if (deltaX != 0) mLastDeferTouchX = ted.mViewX; 6524 if (deltaY != 0) mLastDeferTouchY = ted.mViewY; 6525 break; 6526 } 6527 case MotionEvent.ACTION_UP: 6528 case MotionEvent.ACTION_CANCEL: 6529 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 6530 // no fling in defer process 6531 WebViewCore.resumePriority(); 6532 WebViewCore.resumeUpdatePicture(mWebViewCore); 6533 } 6534 mDeferTouchMode = TOUCH_DONE_MODE; 6535 break; 6536 case WebViewCore.ACTION_DOUBLETAP: 6537 // doDoubleTap() needs mLastTouchX/Y as anchor 6538 mLastTouchX = ted.mViewX; 6539 mLastTouchY = ted.mViewY; 6540 doDoubleTap(); 6541 mDeferTouchMode = TOUCH_DONE_MODE; 6542 break; 6543 case WebViewCore.ACTION_LONGPRESS: 6544 HitTestResult hitTest = getHitTestResult(); 6545 if (hitTest != null && hitTest.mType 6546 != HitTestResult.UNKNOWN_TYPE) { 6547 performLongClick(); 6548 rebuildWebTextView(); 6549 } 6550 mDeferTouchMode = TOUCH_DONE_MODE; 6551 break; 6552 } 6553 } 6554 break; 6555 6556 case REQUEST_KEYBOARD: 6557 if (msg.arg1 == 0) { 6558 hideSoftKeyboard(); 6559 } else { 6560 displaySoftKeyboard(false); 6561 } 6562 break; 6563 6564 case FIND_AGAIN: 6565 // Ignore if find has been dismissed. 6566 if (mFindIsUp) { 6567 findAll(mLastFind); 6568 } 6569 break; 6570 6571 case DRAG_HELD_MOTIONLESS: 6572 mHeldMotionless = MOTIONLESS_TRUE; 6573 invalidate(); 6574 // fall through to keep scrollbars awake 6575 6576 case AWAKEN_SCROLL_BARS: 6577 if (mTouchMode == TOUCH_DRAG_MODE 6578 && mHeldMotionless == MOTIONLESS_TRUE) { 6579 awakenScrollBars(ViewConfiguration 6580 .getScrollDefaultDelay(), false); 6581 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6582 .obtainMessage(AWAKEN_SCROLL_BARS), 6583 ViewConfiguration.getScrollDefaultDelay()); 6584 } 6585 break; 6586 6587 case DO_MOTION_UP: 6588 doMotionUp(msg.arg1, msg.arg2); 6589 break; 6590 6591 case SHOW_FULLSCREEN: { 6592 View view = (View) msg.obj; 6593 int npp = msg.arg1; 6594 6595 if (mFullScreenHolder != null) { 6596 Log.w(LOGTAG, "Should not have another full screen."); 6597 mFullScreenHolder.dismiss(); 6598 } 6599 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 6600 mFullScreenHolder.setContentView(view); 6601 mFullScreenHolder.setCancelable(false); 6602 mFullScreenHolder.setCanceledOnTouchOutside(false); 6603 mFullScreenHolder.show(); 6604 6605 break; 6606 } 6607 case HIDE_FULLSCREEN: 6608 if (inFullScreenMode()) { 6609 mFullScreenHolder.dismiss(); 6610 mFullScreenHolder = null; 6611 } 6612 break; 6613 6614 case DOM_FOCUS_CHANGED: 6615 if (inEditingMode()) { 6616 nativeClearCursor(); 6617 rebuildWebTextView(); 6618 } 6619 break; 6620 6621 case SHOW_RECT_MSG_ID: { 6622 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6623 int x = mScrollX; 6624 int left = contentToViewX(data.mLeft); 6625 int width = contentToViewDimension(data.mWidth); 6626 int maxWidth = contentToViewDimension(data.mContentWidth); 6627 int viewWidth = getViewWidth(); 6628 if (width < viewWidth) { 6629 // center align 6630 x += left + width / 2 - mScrollX - viewWidth / 2; 6631 } else { 6632 x += (int) (left + data.mXPercentInDoc * width 6633 - mScrollX - data.mXPercentInView * viewWidth); 6634 } 6635 if (DebugFlags.WEB_VIEW) { 6636 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6637 width + ",maxWidth=" + maxWidth + 6638 ",viewWidth=" + viewWidth + ",x=" 6639 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6640 ",xPercentInView=" + data.mXPercentInView+ ")"); 6641 } 6642 // use the passing content width to cap x as the current 6643 // mContentWidth may not be updated yet 6644 x = Math.max(0, 6645 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6646 int top = contentToViewY(data.mTop); 6647 int height = contentToViewDimension(data.mHeight); 6648 int maxHeight = contentToViewDimension(data.mContentHeight); 6649 int viewHeight = getViewHeight(); 6650 int y = (int) (top + data.mYPercentInDoc * height - 6651 data.mYPercentInView * viewHeight); 6652 if (DebugFlags.WEB_VIEW) { 6653 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6654 height + ",maxHeight=" + maxHeight + 6655 ",viewHeight=" + viewHeight + ",y=" 6656 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6657 ",yPercentInView=" + data.mYPercentInView+ ")"); 6658 } 6659 // use the passing content height to cap y as the current 6660 // mContentHeight may not be updated yet 6661 y = Math.max(0, 6662 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6663 // We need to take into account the visible title height 6664 // when scrolling since y is an absolute view position. 6665 y = Math.max(0, y - getVisibleTitleHeight()); 6666 scrollTo(x, y); 6667 } 6668 break; 6669 6670 case CENTER_FIT_RECT: 6671 Rect r = (Rect)msg.obj; 6672 mInZoomOverview = false; 6673 centerFitRect(r.left, r.top, r.width(), r.height()); 6674 break; 6675 6676 case SET_SCROLLBAR_MODES: 6677 mHorizontalScrollBarMode = msg.arg1; 6678 mVerticalScrollBarMode = msg.arg2; 6679 break; 6680 6681 default: 6682 super.handleMessage(msg); 6683 break; 6684 } 6685 } 6686 } 6687 6688 /** 6689 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 6690 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 6691 */ 6692 private void updateTextSelectionFromMessage(int nodePointer, 6693 int textGeneration, WebViewCore.TextSelectionData data) { 6694 if (inEditingMode() 6695 && mWebTextView.isSameTextField(nodePointer) 6696 && textGeneration == mTextGeneration) { 6697 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 6698 } 6699 } 6700 6701 // Class used to use a dropdown for a <select> element 6702 private class InvokeListBox implements Runnable { 6703 // Whether the listbox allows multiple selection. 6704 private boolean mMultiple; 6705 // Passed in to a list with multiple selection to tell 6706 // which items are selected. 6707 private int[] mSelectedArray; 6708 // Passed in to a list with single selection to tell 6709 // where the initial selection is. 6710 private int mSelection; 6711 6712 private Container[] mContainers; 6713 6714 // Need these to provide stable ids to my ArrayAdapter, 6715 // which normally does not have stable ids. (Bug 1250098) 6716 private class Container extends Object { 6717 /** 6718 * Possible values for mEnabled. Keep in sync with OptionStatus in 6719 * WebViewCore.cpp 6720 */ 6721 final static int OPTGROUP = -1; 6722 final static int OPTION_DISABLED = 0; 6723 final static int OPTION_ENABLED = 1; 6724 6725 String mString; 6726 int mEnabled; 6727 int mId; 6728 6729 public String toString() { 6730 return mString; 6731 } 6732 } 6733 6734 /** 6735 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6736 * and allow filtering. 6737 */ 6738 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6739 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6740 super(context, 6741 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6742 com.android.internal.R.layout.select_dialog_singlechoice, 6743 objects); 6744 } 6745 6746 @Override 6747 public View getView(int position, View convertView, 6748 ViewGroup parent) { 6749 // Always pass in null so that we will get a new CheckedTextView 6750 // Otherwise, an item which was previously used as an <optgroup> 6751 // element (i.e. has no check), could get used as an <option> 6752 // element, which needs a checkbox/radio, but it would not have 6753 // one. 6754 convertView = super.getView(position, null, parent); 6755 Container c = item(position); 6756 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6757 // ListView does not draw dividers between disabled and 6758 // enabled elements. Use a LinearLayout to provide dividers 6759 LinearLayout layout = new LinearLayout(mContext); 6760 layout.setOrientation(LinearLayout.VERTICAL); 6761 if (position > 0) { 6762 View dividerTop = new View(mContext); 6763 dividerTop.setBackgroundResource( 6764 android.R.drawable.divider_horizontal_bright); 6765 layout.addView(dividerTop); 6766 } 6767 6768 if (Container.OPTGROUP == c.mEnabled) { 6769 // Currently select_dialog_multichoice and 6770 // select_dialog_singlechoice are CheckedTextViews. If 6771 // that changes, the class cast will no longer be valid. 6772 Assert.assertTrue( 6773 convertView instanceof CheckedTextView); 6774 ((CheckedTextView) convertView).setCheckMarkDrawable( 6775 null); 6776 } else { 6777 // c.mEnabled == Container.OPTION_DISABLED 6778 // Draw the disabled element in a disabled state. 6779 convertView.setEnabled(false); 6780 } 6781 6782 layout.addView(convertView); 6783 if (position < getCount() - 1) { 6784 View dividerBottom = new View(mContext); 6785 dividerBottom.setBackgroundResource( 6786 android.R.drawable.divider_horizontal_bright); 6787 layout.addView(dividerBottom); 6788 } 6789 return layout; 6790 } 6791 return convertView; 6792 } 6793 6794 @Override 6795 public boolean hasStableIds() { 6796 // AdapterView's onChanged method uses this to determine whether 6797 // to restore the old state. Return false so that the old (out 6798 // of date) state does not replace the new, valid state. 6799 return false; 6800 } 6801 6802 private Container item(int position) { 6803 if (position < 0 || position >= getCount()) { 6804 return null; 6805 } 6806 return (Container) getItem(position); 6807 } 6808 6809 @Override 6810 public long getItemId(int position) { 6811 Container item = item(position); 6812 if (item == null) { 6813 return -1; 6814 } 6815 return item.mId; 6816 } 6817 6818 @Override 6819 public boolean areAllItemsEnabled() { 6820 return false; 6821 } 6822 6823 @Override 6824 public boolean isEnabled(int position) { 6825 Container item = item(position); 6826 if (item == null) { 6827 return false; 6828 } 6829 return Container.OPTION_ENABLED == item.mEnabled; 6830 } 6831 } 6832 6833 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 6834 mMultiple = true; 6835 mSelectedArray = selected; 6836 6837 int length = array.length; 6838 mContainers = new Container[length]; 6839 for (int i = 0; i < length; i++) { 6840 mContainers[i] = new Container(); 6841 mContainers[i].mString = array[i]; 6842 mContainers[i].mEnabled = enabled[i]; 6843 mContainers[i].mId = i; 6844 } 6845 } 6846 6847 private InvokeListBox(String[] array, int[] enabled, int selection) { 6848 mSelection = selection; 6849 mMultiple = false; 6850 6851 int length = array.length; 6852 mContainers = new Container[length]; 6853 for (int i = 0; i < length; i++) { 6854 mContainers[i] = new Container(); 6855 mContainers[i].mString = array[i]; 6856 mContainers[i].mEnabled = enabled[i]; 6857 mContainers[i].mId = i; 6858 } 6859 } 6860 6861 /* 6862 * Whenever the data set changes due to filtering, this class ensures 6863 * that the checked item remains checked. 6864 */ 6865 private class SingleDataSetObserver extends DataSetObserver { 6866 private long mCheckedId; 6867 private ListView mListView; 6868 private Adapter mAdapter; 6869 6870 /* 6871 * Create a new observer. 6872 * @param id The ID of the item to keep checked. 6873 * @param l ListView for getting and clearing the checked states 6874 * @param a Adapter for getting the IDs 6875 */ 6876 public SingleDataSetObserver(long id, ListView l, Adapter a) { 6877 mCheckedId = id; 6878 mListView = l; 6879 mAdapter = a; 6880 } 6881 6882 public void onChanged() { 6883 // The filter may have changed which item is checked. Find the 6884 // item that the ListView thinks is checked. 6885 int position = mListView.getCheckedItemPosition(); 6886 long id = mAdapter.getItemId(position); 6887 if (mCheckedId != id) { 6888 // Clear the ListView's idea of the checked item, since 6889 // it is incorrect 6890 mListView.clearChoices(); 6891 // Search for mCheckedId. If it is in the filtered list, 6892 // mark it as checked 6893 int count = mAdapter.getCount(); 6894 for (int i = 0; i < count; i++) { 6895 if (mAdapter.getItemId(i) == mCheckedId) { 6896 mListView.setItemChecked(i, true); 6897 break; 6898 } 6899 } 6900 } 6901 } 6902 6903 public void onInvalidate() {} 6904 } 6905 6906 public void run() { 6907 final ListView listView = (ListView) LayoutInflater.from(mContext) 6908 .inflate(com.android.internal.R.layout.select_dialog, null); 6909 final MyArrayListAdapter adapter = new 6910 MyArrayListAdapter(mContext, mContainers, mMultiple); 6911 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 6912 .setView(listView).setCancelable(true) 6913 .setInverseBackgroundForced(true); 6914 6915 if (mMultiple) { 6916 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 6917 public void onClick(DialogInterface dialog, int which) { 6918 mWebViewCore.sendMessage( 6919 EventHub.LISTBOX_CHOICES, 6920 adapter.getCount(), 0, 6921 listView.getCheckedItemPositions()); 6922 }}); 6923 b.setNegativeButton(android.R.string.cancel, 6924 new DialogInterface.OnClickListener() { 6925 public void onClick(DialogInterface dialog, int which) { 6926 mWebViewCore.sendMessage( 6927 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6928 }}); 6929 } 6930 final AlertDialog dialog = b.create(); 6931 listView.setAdapter(adapter); 6932 listView.setFocusableInTouchMode(true); 6933 // There is a bug (1250103) where the checks in a ListView with 6934 // multiple items selected are associated with the positions, not 6935 // the ids, so the items do not properly retain their checks when 6936 // filtered. Do not allow filtering on multiple lists until 6937 // that bug is fixed. 6938 6939 listView.setTextFilterEnabled(!mMultiple); 6940 if (mMultiple) { 6941 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 6942 int length = mSelectedArray.length; 6943 for (int i = 0; i < length; i++) { 6944 listView.setItemChecked(mSelectedArray[i], true); 6945 } 6946 } else { 6947 listView.setOnItemClickListener(new OnItemClickListener() { 6948 public void onItemClick(AdapterView parent, View v, 6949 int position, long id) { 6950 mWebViewCore.sendMessage( 6951 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 6952 dialog.dismiss(); 6953 } 6954 }); 6955 if (mSelection != -1) { 6956 listView.setSelection(mSelection); 6957 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 6958 listView.setItemChecked(mSelection, true); 6959 DataSetObserver observer = new SingleDataSetObserver( 6960 adapter.getItemId(mSelection), listView, adapter); 6961 adapter.registerDataSetObserver(observer); 6962 } 6963 } 6964 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 6965 public void onCancel(DialogInterface dialog) { 6966 mWebViewCore.sendMessage( 6967 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6968 } 6969 }); 6970 dialog.show(); 6971 } 6972 } 6973 6974 /* 6975 * Request a dropdown menu for a listbox with multiple selection. 6976 * 6977 * @param array Labels for the listbox. 6978 * @param enabledArray State for each element in the list. See static 6979 * integers in Container class. 6980 * @param selectedArray Which positions are initally selected. 6981 */ 6982 void requestListBox(String[] array, int[] enabledArray, int[] 6983 selectedArray) { 6984 mPrivateHandler.post( 6985 new InvokeListBox(array, enabledArray, selectedArray)); 6986 } 6987 6988 private void updateZoomRange(WebViewCore.RestoreState restoreState, 6989 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 6990 if (restoreState.mMinScale == 0) { 6991 if (restoreState.mMobileSite) { 6992 if (minPrefWidth > Math.max(0, viewWidth)) { 6993 mMinZoomScale = (float) viewWidth / minPrefWidth; 6994 mMinZoomScaleFixed = false; 6995 if (updateZoomOverview) { 6996 WebSettings settings = getSettings(); 6997 mInZoomOverview = settings.getUseWideViewPort() && 6998 settings.getLoadWithOverviewMode(); 6999 } 7000 } else { 7001 mMinZoomScale = restoreState.mDefaultScale; 7002 mMinZoomScaleFixed = true; 7003 } 7004 } else { 7005 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 7006 mMinZoomScaleFixed = false; 7007 } 7008 } else { 7009 mMinZoomScale = restoreState.mMinScale; 7010 mMinZoomScaleFixed = true; 7011 } 7012 if (restoreState.mMaxScale == 0) { 7013 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 7014 } else { 7015 mMaxZoomScale = restoreState.mMaxScale; 7016 } 7017 } 7018 7019 /* 7020 * Request a dropdown menu for a listbox with single selection or a single 7021 * <select> element. 7022 * 7023 * @param array Labels for the listbox. 7024 * @param enabledArray State for each element in the list. See static 7025 * integers in Container class. 7026 * @param selection Which position is initally selected. 7027 */ 7028 void requestListBox(String[] array, int[] enabledArray, int selection) { 7029 mPrivateHandler.post( 7030 new InvokeListBox(array, enabledArray, selection)); 7031 } 7032 7033 // called by JNI 7034 private void sendMoveFocus(int frame, int node) { 7035 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7036 new WebViewCore.CursorData(frame, node, 0, 0)); 7037 } 7038 7039 // called by JNI 7040 private void sendMoveMouse(int frame, int node, int x, int y) { 7041 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7042 new WebViewCore.CursorData(frame, node, x, y)); 7043 } 7044 7045 /* 7046 * Send a mouse move event to the webcore thread. 7047 * 7048 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7049 * which wants key events, but it is not the focus. This 7050 * will make the visual appear as though nothing is in 7051 * focus. Remove the WebTextView, if present, and stop 7052 * drawing the blinking caret. 7053 * called by JNI 7054 */ 7055 private void sendMoveMouseIfLatest(boolean removeFocus) { 7056 if (removeFocus) { 7057 clearTextEntry(true); 7058 } 7059 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7060 cursorData()); 7061 } 7062 7063 // called by JNI 7064 private void sendMotionUp(int touchGeneration, 7065 int frame, int node, int x, int y) { 7066 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7067 touchUpData.mMoveGeneration = touchGeneration; 7068 touchUpData.mFrame = frame; 7069 touchUpData.mNode = node; 7070 touchUpData.mX = x; 7071 touchUpData.mY = y; 7072 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7073 } 7074 7075 7076 private int getScaledMaxXScroll() { 7077 int width; 7078 if (mHeightCanMeasure == false) { 7079 width = getViewWidth() / 4; 7080 } else { 7081 Rect visRect = new Rect(); 7082 calcOurVisibleRect(visRect); 7083 width = visRect.width() / 2; 7084 } 7085 // FIXME the divisor should be retrieved from somewhere 7086 return viewToContentX(width); 7087 } 7088 7089 private int getScaledMaxYScroll() { 7090 int height; 7091 if (mHeightCanMeasure == false) { 7092 height = getViewHeight() / 4; 7093 } else { 7094 Rect visRect = new Rect(); 7095 calcOurVisibleRect(visRect); 7096 height = visRect.height() / 2; 7097 } 7098 // FIXME the divisor should be retrieved from somewhere 7099 // the closest thing today is hard-coded into ScrollView.java 7100 // (from ScrollView.java, line 363) int maxJump = height/2; 7101 return Math.round(height * mInvActualScale); 7102 } 7103 7104 /** 7105 * Called by JNI to invalidate view 7106 */ 7107 private void viewInvalidate() { 7108 invalidate(); 7109 } 7110 7111 /** 7112 * Pass the key to the plugin. This assumes that nativeFocusIsPlugin() 7113 * returned true. 7114 */ 7115 private void letPluginHandleNavKey(int keyCode, long time, boolean down) { 7116 int keyEventAction; 7117 int eventHubAction; 7118 if (down) { 7119 keyEventAction = KeyEvent.ACTION_DOWN; 7120 eventHubAction = EventHub.KEY_DOWN; 7121 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7122 } else { 7123 keyEventAction = KeyEvent.ACTION_UP; 7124 eventHubAction = EventHub.KEY_UP; 7125 } 7126 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7127 1, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 7128 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 7129 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 7130 , 0, 0, 0); 7131 mWebViewCore.sendMessage(eventHubAction, event); 7132 } 7133 7134 // return true if the key was handled 7135 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7136 long time) { 7137 if (mNativeClass == 0) { 7138 return false; 7139 } 7140 mLastCursorTime = time; 7141 mLastCursorBounds = nativeGetCursorRingBounds(); 7142 boolean keyHandled 7143 = nativeMoveCursor(keyCode, count, noScroll) == false; 7144 if (DebugFlags.WEB_VIEW) { 7145 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7146 + " mLastCursorTime=" + mLastCursorTime 7147 + " handled=" + keyHandled); 7148 } 7149 if (keyHandled == false || mHeightCanMeasure == false) { 7150 return keyHandled; 7151 } 7152 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7153 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7154 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7155 Rect visRect = new Rect(); 7156 calcOurVisibleRect(visRect); 7157 Rect outset = new Rect(visRect); 7158 int maxXScroll = visRect.width() / 2; 7159 int maxYScroll = visRect.height() / 2; 7160 outset.inset(-maxXScroll, -maxYScroll); 7161 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7162 return keyHandled; 7163 } 7164 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7165 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7166 maxXScroll); 7167 if (maxH > 0) { 7168 pinScrollBy(maxH, 0, true, 0); 7169 } else { 7170 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7171 -maxXScroll); 7172 if (maxH < 0) { 7173 pinScrollBy(maxH, 0, true, 0); 7174 } 7175 } 7176 if (mLastCursorBounds.isEmpty()) return keyHandled; 7177 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7178 return keyHandled; 7179 } 7180 if (DebugFlags.WEB_VIEW) { 7181 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7182 + contentCursorRingBounds); 7183 } 7184 requestRectangleOnScreen(viewCursorRingBounds); 7185 mUserScroll = true; 7186 return keyHandled; 7187 } 7188 7189 /** 7190 * Set the background color. It's white by default. Pass 7191 * zero to make the view transparent. 7192 * @param color the ARGB color described by Color.java 7193 */ 7194 public void setBackgroundColor(int color) { 7195 mBackgroundColor = color; 7196 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7197 } 7198 7199 public void debugDump() { 7200 nativeDebugDump(); 7201 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7202 } 7203 7204 /** 7205 * Draw the HTML page into the specified canvas. This call ignores any 7206 * view-specific zoom, scroll offset, or other changes. It does not draw 7207 * any view-specific chrome, such as progress or URL bars. 7208 * 7209 * @hide only needs to be accessible to Browser and testing 7210 */ 7211 public void drawPage(Canvas canvas) { 7212 mWebViewCore.drawContentPicture(canvas, 0, false, false); 7213 } 7214 7215 /** 7216 * Set the time to wait between passing touches to WebCore. See also the 7217 * TOUCH_SENT_INTERVAL member for further discussion. 7218 * 7219 * @hide This is only used by the DRT test application. 7220 */ 7221 public void setTouchInterval(int interval) { 7222 mCurrentTouchInterval = interval; 7223 } 7224 7225 /** 7226 * Update our cache with updatedText. 7227 * @param updatedText The new text to put in our cache. 7228 */ 7229 /* package */ void updateCachedTextfield(String updatedText) { 7230 // Also place our generation number so that when we look at the cache 7231 // we recognize that it is up to date. 7232 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7233 } 7234 7235 private native int nativeCacheHitFramePointer(); 7236 private native Rect nativeCacheHitNodeBounds(); 7237 private native int nativeCacheHitNodePointer(); 7238 /* package */ native void nativeClearCursor(); 7239 private native void nativeCreate(int ptr); 7240 private native int nativeCursorFramePointer(); 7241 private native Rect nativeCursorNodeBounds(); 7242 private native int nativeCursorNodePointer(); 7243 /* package */ native boolean nativeCursorMatchesFocus(); 7244 private native boolean nativeCursorIntersects(Rect visibleRect); 7245 private native boolean nativeCursorIsAnchor(); 7246 private native boolean nativeCursorIsTextInput(); 7247 private native Point nativeCursorPosition(); 7248 private native String nativeCursorText(); 7249 /** 7250 * Returns true if the native cursor node says it wants to handle key events 7251 * (ala plugins). This can only be called if mNativeClass is non-zero! 7252 */ 7253 private native boolean nativeCursorWantsKeyEvents(); 7254 private native void nativeDebugDump(); 7255 private native void nativeDestroy(); 7256 private native boolean nativeEvaluateLayersAnimations(); 7257 private native void nativeDrawExtras(Canvas canvas, int extra); 7258 private native void nativeDumpDisplayTree(String urlOrNull); 7259 private native int nativeFindAll(String findLower, String findUpper); 7260 private native void nativeFindNext(boolean forward); 7261 /* package */ native int nativeFocusCandidateFramePointer(); 7262 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 7263 /* package */ native boolean nativeFocusCandidateIsPassword(); 7264 private native boolean nativeFocusCandidateIsRtlText(); 7265 private native boolean nativeFocusCandidateIsTextInput(); 7266 /* package */ native int nativeFocusCandidateMaxLength(); 7267 /* package */ native String nativeFocusCandidateName(); 7268 private native Rect nativeFocusCandidateNodeBounds(); 7269 /* package */ native int nativeFocusCandidatePointer(); 7270 private native String nativeFocusCandidateText(); 7271 private native int nativeFocusCandidateTextSize(); 7272 /** 7273 * Returns an integer corresponding to WebView.cpp::type. 7274 * See WebTextView.setType() 7275 */ 7276 private native int nativeFocusCandidateType(); 7277 private native boolean nativeFocusIsPlugin(); 7278 private native Rect nativeFocusNodeBounds(); 7279 /* package */ native int nativeFocusNodePointer(); 7280 private native Rect nativeGetCursorRingBounds(); 7281 private native String nativeGetSelection(); 7282 private native boolean nativeHasCursorNode(); 7283 private native boolean nativeHasFocusNode(); 7284 private native void nativeHideCursor(); 7285 private native String nativeImageURI(int x, int y); 7286 private native void nativeInstrumentReport(); 7287 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7288 // return true if the page has been scrolled 7289 private native boolean nativeMotionUp(int x, int y, int slop); 7290 // returns false if it handled the key 7291 private native boolean nativeMoveCursor(int keyCode, int count, 7292 boolean noScroll); 7293 private native int nativeMoveGeneration(); 7294 private native void nativeMoveSelection(int x, int y, 7295 boolean extendSelection); 7296 private native boolean nativePointInNavCache(int x, int y, int slop); 7297 // Like many other of our native methods, you must make sure that 7298 // mNativeClass is not null before calling this method. 7299 private native void nativeRecordButtons(boolean focused, 7300 boolean pressed, boolean invalidate); 7301 private native void nativeSelectBestAt(Rect rect); 7302 private native void nativeSetFindIsEmpty(); 7303 private native void nativeSetFindIsUp(boolean isUp); 7304 private native void nativeSetFollowedLink(boolean followed); 7305 private native void nativeSetHeightCanMeasure(boolean measure); 7306 private native void nativeSetRootLayer(int layer); 7307 private native void nativeSetSelectionPointer(boolean set, 7308 float scale, int x, int y, boolean extendSelection); 7309 private native void nativeSetSelectionRegion(boolean set); 7310 private native Rect nativeSubtractLayers(Rect content); 7311 private native int nativeTextGeneration(); 7312 // Never call this version except by updateCachedTextfield(String) - 7313 // we always want to pass in our generation number. 7314 private native void nativeUpdateCachedTextfield(String updatedText, 7315 int generation); 7316 // return NO_LEFTEDGE means failure. 7317 private static final int NO_LEFTEDGE = -1; 7318 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 7319} 7320