WebView.java revision c36862d53ade2c959eb1ca7ec9c20d7f76a1a4d7
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 boolean canZoomIn = mActualScale < mMaxZoomScale; 878 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 879 ZoomButtonsController controller = getZoomButtonsController(); 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 controller.getZoomControls().setVisibility(View.GONE); 884 } else { 885 // Set each one individually, as a page may be able to zoom in 886 // or out. 887 controller.setZoomInEnabled(canZoomIn); 888 controller.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 return computeHorizontalScrollExtent(); 2291 } else { 2292 // to avoid rounding error caused unnecessary scrollbar, use floor 2293 return (int) Math.floor(mContentWidth * mActualScale); 2294 } 2295 } 2296 2297 @Override 2298 protected int computeVerticalScrollRange() { 2299 if (mDrawHistory) { 2300 return mHistoryHeight; 2301 } else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF) { 2302 return computeVerticalScrollExtent(); 2303 } else { 2304 // to avoid rounding error caused unnecessary scrollbar, use floor 2305 return (int) Math.floor(mContentHeight * mActualScale); 2306 } 2307 } 2308 2309 @Override 2310 protected int computeVerticalScrollOffset() { 2311 return Math.max(mScrollY - getTitleHeight(), 0); 2312 } 2313 2314 @Override 2315 protected int computeVerticalScrollExtent() { 2316 return getViewHeight(); 2317 } 2318 2319 /** @hide */ 2320 @Override 2321 protected void onDrawVerticalScrollBar(Canvas canvas, 2322 Drawable scrollBar, 2323 int l, int t, int r, int b) { 2324 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2325 scrollBar.draw(canvas); 2326 } 2327 2328 /** 2329 * Get the url for the current page. This is not always the same as the url 2330 * passed to WebViewClient.onPageStarted because although the load for 2331 * that url has begun, the current page may not have changed. 2332 * @return The url for the current page. 2333 */ 2334 public String getUrl() { 2335 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2336 return h != null ? h.getUrl() : null; 2337 } 2338 2339 /** 2340 * Get the original url for the current page. This is not always the same 2341 * as the url passed to WebViewClient.onPageStarted because although the 2342 * load for that url has begun, the current page may not have changed. 2343 * Also, there may have been redirects resulting in a different url to that 2344 * originally requested. 2345 * @return The url that was originally requested for the current page. 2346 */ 2347 public String getOriginalUrl() { 2348 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2349 return h != null ? h.getOriginalUrl() : null; 2350 } 2351 2352 /** 2353 * Get the title for the current page. This is the title of the current page 2354 * until WebViewClient.onReceivedTitle is called. 2355 * @return The title for the current page. 2356 */ 2357 public String getTitle() { 2358 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2359 return h != null ? h.getTitle() : null; 2360 } 2361 2362 /** 2363 * Get the favicon for the current page. This is the favicon of the current 2364 * page until WebViewClient.onReceivedIcon is called. 2365 * @return The favicon for the current page. 2366 */ 2367 public Bitmap getFavicon() { 2368 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2369 return h != null ? h.getFavicon() : null; 2370 } 2371 2372 /** 2373 * Get the touch icon url for the apple-touch-icon <link> element. 2374 * @hide 2375 */ 2376 public String getTouchIconUrl() { 2377 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2378 return h != null ? h.getTouchIconUrl() : null; 2379 } 2380 2381 /** 2382 * Get the progress for the current page. 2383 * @return The progress for the current page between 0 and 100. 2384 */ 2385 public int getProgress() { 2386 return mCallbackProxy.getProgress(); 2387 } 2388 2389 /** 2390 * @return the height of the HTML content. 2391 */ 2392 public int getContentHeight() { 2393 return mContentHeight; 2394 } 2395 2396 /** 2397 * @return the width of the HTML content. 2398 * @hide 2399 */ 2400 public int getContentWidth() { 2401 return mContentWidth; 2402 } 2403 2404 /** 2405 * Pause all layout, parsing, and javascript timers for all webviews. This 2406 * is a global requests, not restricted to just this webview. This can be 2407 * useful if the application has been paused. 2408 */ 2409 public void pauseTimers() { 2410 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2411 } 2412 2413 /** 2414 * Resume all layout, parsing, and javascript timers for all webviews. 2415 * This will resume dispatching all timers. 2416 */ 2417 public void resumeTimers() { 2418 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2419 } 2420 2421 /** 2422 * Call this to pause any extra processing associated with this view and 2423 * its associated DOM/plugins/javascript/etc. For example, if the view is 2424 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2425 * network traffic. When the view is again "active", call onResume(). 2426 * 2427 * Note that this differs from pauseTimers(), which affects all views/DOMs 2428 * @hide 2429 */ 2430 public void onPause() { 2431 if (!mIsPaused) { 2432 mIsPaused = true; 2433 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2434 } 2435 } 2436 2437 /** 2438 * Call this to balanace a previous call to onPause() 2439 * @hide 2440 */ 2441 public void onResume() { 2442 if (mIsPaused) { 2443 mIsPaused = false; 2444 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2445 } 2446 } 2447 2448 /** 2449 * Returns true if the view is paused, meaning onPause() was called. Calling 2450 * onResume() sets the paused state back to false. 2451 * @hide 2452 */ 2453 public boolean isPaused() { 2454 return mIsPaused; 2455 } 2456 2457 /** 2458 * Call this to inform the view that memory is low so that it can 2459 * free any available memory. 2460 */ 2461 public void freeMemory() { 2462 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2463 } 2464 2465 /** 2466 * Clear the resource cache. Note that the cache is per-application, so 2467 * this will clear the cache for all WebViews used. 2468 * 2469 * @param includeDiskFiles If false, only the RAM cache is cleared. 2470 */ 2471 public void clearCache(boolean includeDiskFiles) { 2472 // Note: this really needs to be a static method as it clears cache for all 2473 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2474 // we can't make this static. 2475 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2476 includeDiskFiles ? 1 : 0, 0); 2477 } 2478 2479 /** 2480 * Make sure that clearing the form data removes the adapter from the 2481 * currently focused textfield if there is one. 2482 */ 2483 public void clearFormData() { 2484 if (inEditingMode()) { 2485 AutoCompleteAdapter adapter = null; 2486 mWebTextView.setAdapterCustom(adapter); 2487 } 2488 } 2489 2490 /** 2491 * Tell the WebView to clear its internal back/forward list. 2492 */ 2493 public void clearHistory() { 2494 mCallbackProxy.getBackForwardList().setClearPending(); 2495 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2496 } 2497 2498 /** 2499 * Clear the SSL preferences table stored in response to proceeding with SSL 2500 * certificate errors. 2501 */ 2502 public void clearSslPreferences() { 2503 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2504 } 2505 2506 /** 2507 * Return the WebBackForwardList for this WebView. This contains the 2508 * back/forward list for use in querying each item in the history stack. 2509 * This is a copy of the private WebBackForwardList so it contains only a 2510 * snapshot of the current state. Multiple calls to this method may return 2511 * different objects. The object returned from this method will not be 2512 * updated to reflect any new state. 2513 */ 2514 public WebBackForwardList copyBackForwardList() { 2515 return mCallbackProxy.getBackForwardList().clone(); 2516 } 2517 2518 /* 2519 * Highlight and scroll to the next occurance of String in findAll. 2520 * Wraps the page infinitely, and scrolls. Must be called after 2521 * calling findAll. 2522 * 2523 * @param forward Direction to search. 2524 */ 2525 public void findNext(boolean forward) { 2526 if (0 == mNativeClass) return; // client isn't initialized 2527 nativeFindNext(forward); 2528 } 2529 2530 /* 2531 * Find all instances of find on the page and highlight them. 2532 * @param find String to find. 2533 * @return int The number of occurances of the String "find" 2534 * that were found. 2535 */ 2536 public int findAll(String find) { 2537 if (0 == mNativeClass) return 0; // client isn't initialized 2538 int result = find != null ? nativeFindAll(find.toLowerCase(), 2539 find.toUpperCase()) : 0; 2540 invalidate(); 2541 mLastFind = find; 2542 return result; 2543 } 2544 2545 /** 2546 * @hide 2547 */ 2548 public void setFindIsUp(boolean isUp) { 2549 mFindIsUp = isUp; 2550 if (isUp) { 2551 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2552 false); 2553 } 2554 if (0 == mNativeClass) return; // client isn't initialized 2555 nativeSetFindIsUp(isUp); 2556 } 2557 2558 // Used to know whether the find dialog is open. Affects whether 2559 // or not we draw the highlights for matches. 2560 private boolean mFindIsUp; 2561 2562 private int mFindHeight; 2563 // Keep track of the last string sent, so we can search again after an 2564 // orientation change or the dismissal of the soft keyboard. 2565 private String mLastFind; 2566 2567 /** 2568 * Return the first substring consisting of the address of a physical 2569 * location. Currently, only addresses in the United States are detected, 2570 * and consist of: 2571 * - a house number 2572 * - a street name 2573 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2574 * - a city name 2575 * - a state or territory, either spelled out or two-letter abbr. 2576 * - an optional 5 digit or 9 digit zip code. 2577 * 2578 * All names must be correctly capitalized, and the zip code, if present, 2579 * must be valid for the state. The street type must be a standard USPS 2580 * spelling or abbreviation. The state or territory must also be spelled 2581 * or abbreviated using USPS standards. The house number may not exceed 2582 * five digits. 2583 * @param addr The string to search for addresses. 2584 * 2585 * @return the address, or if no address is found, return null. 2586 */ 2587 public static String findAddress(String addr) { 2588 return findAddress(addr, false); 2589 } 2590 2591 /** 2592 * @hide 2593 * Return the first substring consisting of the address of a physical 2594 * location. Currently, only addresses in the United States are detected, 2595 * and consist of: 2596 * - a house number 2597 * - a street name 2598 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2599 * - a city name 2600 * - a state or territory, either spelled out or two-letter abbr. 2601 * - an optional 5 digit or 9 digit zip code. 2602 * 2603 * Names are optionally capitalized, and the zip code, if present, 2604 * must be valid for the state. The street type must be a standard USPS 2605 * spelling or abbreviation. The state or territory must also be spelled 2606 * or abbreviated using USPS standards. The house number may not exceed 2607 * five digits. 2608 * @param addr The string to search for addresses. 2609 * @param caseInsensitive addr Set to true to make search ignore case. 2610 * 2611 * @return the address, or if no address is found, return null. 2612 */ 2613 public static String findAddress(String addr, boolean caseInsensitive) { 2614 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2615 } 2616 2617 /* 2618 * Clear the highlighting surrounding text matches created by findAll. 2619 */ 2620 public void clearMatches() { 2621 mLastFind = ""; 2622 if (mNativeClass == 0) 2623 return; 2624 nativeSetFindIsEmpty(); 2625 invalidate(); 2626 } 2627 2628 /** 2629 * @hide 2630 */ 2631 public void notifyFindDialogDismissed() { 2632 if (mWebViewCore == null) { 2633 return; 2634 } 2635 clearMatches(); 2636 setFindIsUp(false); 2637 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2638 false); 2639 // Now that the dialog has been removed, ensure that we scroll to a 2640 // location that is not beyond the end of the page. 2641 pinScrollTo(mScrollX, mScrollY, false, 0); 2642 invalidate(); 2643 } 2644 2645 /** 2646 * @hide 2647 */ 2648 public void setFindDialogHeight(int height) { 2649 if (DebugFlags.WEB_VIEW) { 2650 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2651 } 2652 mFindHeight = height; 2653 } 2654 2655 /** 2656 * Query the document to see if it contains any image references. The 2657 * message object will be dispatched with arg1 being set to 1 if images 2658 * were found and 0 if the document does not reference any images. 2659 * @param response The message that will be dispatched with the result. 2660 */ 2661 public void documentHasImages(Message response) { 2662 if (response == null) { 2663 return; 2664 } 2665 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2666 } 2667 2668 @Override 2669 public void computeScroll() { 2670 if (mScroller.computeScrollOffset()) { 2671 int oldX = mScrollX; 2672 int oldY = mScrollY; 2673 mScrollX = mScroller.getCurrX(); 2674 mScrollY = mScroller.getCurrY(); 2675 postInvalidate(); // So we draw again 2676 if (oldX != mScrollX || oldY != mScrollY) { 2677 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2678 } 2679 } else { 2680 super.computeScroll(); 2681 } 2682 } 2683 2684 private static int computeDuration(int dx, int dy) { 2685 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2686 int duration = distance * 1000 / STD_SPEED; 2687 return Math.min(duration, MAX_DURATION); 2688 } 2689 2690 // helper to pin the scrollBy parameters (already in view coordinates) 2691 // returns true if the scroll was changed 2692 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2693 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2694 } 2695 // helper to pin the scrollTo parameters (already in view coordinates) 2696 // returns true if the scroll was changed 2697 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2698 x = pinLocX(x); 2699 y = pinLocY(y); 2700 int dx = x - mScrollX; 2701 int dy = y - mScrollY; 2702 2703 if ((dx | dy) == 0) { 2704 return false; 2705 } 2706 if (animate) { 2707 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2708 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2709 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2710 awakenScrollBars(mScroller.getDuration()); 2711 invalidate(); 2712 } else { 2713 abortAnimation(); // just in case 2714 scrollTo(x, y); 2715 } 2716 return true; 2717 } 2718 2719 // Scale from content to view coordinates, and pin. 2720 // Also called by jni webview.cpp 2721 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2722 if (mDrawHistory) { 2723 // disallow WebView to change the scroll position as History Picture 2724 // is used in the view system. 2725 // TODO: as we switchOutDrawHistory when trackball or navigation 2726 // keys are hit, this should be safe. Right? 2727 return false; 2728 } 2729 cx = contentToViewDimension(cx); 2730 cy = contentToViewDimension(cy); 2731 if (mHeightCanMeasure) { 2732 // move our visible rect according to scroll request 2733 if (cy != 0) { 2734 Rect tempRect = new Rect(); 2735 calcOurVisibleRect(tempRect); 2736 tempRect.offset(cx, cy); 2737 requestRectangleOnScreen(tempRect); 2738 } 2739 // FIXME: We scroll horizontally no matter what because currently 2740 // ScrollView and ListView will not scroll horizontally. 2741 // FIXME: Why do we only scroll horizontally if there is no 2742 // vertical scroll? 2743// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2744 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2745 } else { 2746 return pinScrollBy(cx, cy, animate, 0); 2747 } 2748 } 2749 2750 /** 2751 * Called by CallbackProxy when the page finishes loading. 2752 * @param url The URL of the page which has finished loading. 2753 */ 2754 /* package */ void onPageFinished(String url) { 2755 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 2756 // If the user is now on a different page, or has scrolled the page 2757 // past the point where the title bar is offscreen, ignore the 2758 // scroll request. 2759 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 2760 && mScrollX == 0 && mScrollY == 0) { 2761 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 2762 SLIDE_TITLE_DURATION); 2763 } 2764 mPageThatNeedsToSlideTitleBarOffScreen = null; 2765 } 2766 } 2767 2768 /** 2769 * The URL of a page that sent a message to scroll the title bar off screen. 2770 * 2771 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 2772 * title bar off the screen. Sometimes, the scroll position is set before 2773 * the page finishes loading. Rather than scrolling while the page is still 2774 * loading, keep track of the URL and new scroll position so we can perform 2775 * the scroll once the page finishes loading. 2776 */ 2777 private String mPageThatNeedsToSlideTitleBarOffScreen; 2778 2779 /** 2780 * The destination Y scroll position to be used when the page finishes 2781 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 2782 */ 2783 private int mYDistanceToSlideTitleOffScreen; 2784 2785 // scale from content to view coordinates, and pin 2786 // return true if pin caused the final x/y different than the request cx/cy, 2787 // and a future scroll may reach the request cx/cy after our size has 2788 // changed 2789 // return false if the view scroll to the exact position as it is requested, 2790 // where negative numbers are taken to mean 0 2791 private boolean setContentScrollTo(int cx, int cy) { 2792 if (mDrawHistory) { 2793 // disallow WebView to change the scroll position as History Picture 2794 // is used in the view system. 2795 // One known case where this is called is that WebCore tries to 2796 // restore the scroll position. As history Picture already uses the 2797 // saved scroll position, it is ok to skip this. 2798 return false; 2799 } 2800 int vx; 2801 int vy; 2802 if ((cx | cy) == 0) { 2803 // If the page is being scrolled to (0,0), do not add in the title 2804 // bar's height, and simply scroll to (0,0). (The only other work 2805 // in contentToView_ is to multiply, so this would not change 0.) 2806 vx = 0; 2807 vy = 0; 2808 } else { 2809 vx = contentToViewX(cx); 2810 vy = contentToViewY(cy); 2811 } 2812// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2813// vx + " " + vy + "]"); 2814 // Some mobile sites attempt to scroll the title bar off the page by 2815 // scrolling to (0,1). If we are at the top left corner of the 2816 // page, assume this is an attempt to scroll off the title bar, and 2817 // animate the title bar off screen slowly enough that the user can see 2818 // it. 2819 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 2820 && mTitleBar != null) { 2821 // FIXME: 100 should be defined somewhere as our max progress. 2822 if (getProgress() < 100) { 2823 // Wait to scroll the title bar off screen until the page has 2824 // finished loading. Keep track of the URL and the destination 2825 // Y position 2826 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 2827 mYDistanceToSlideTitleOffScreen = vy; 2828 } else { 2829 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2830 } 2831 // Since we are animating, we have not yet reached the desired 2832 // scroll position. Do not return true to request another attempt 2833 return false; 2834 } 2835 pinScrollTo(vx, vy, false, 0); 2836 // If the request was to scroll to a negative coordinate, treat it as if 2837 // it was a request to scroll to 0 2838 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2839 return true; 2840 } else { 2841 return false; 2842 } 2843 } 2844 2845 // scale from content to view coordinates, and pin 2846 private void spawnContentScrollTo(int cx, int cy) { 2847 if (mDrawHistory) { 2848 // disallow WebView to change the scroll position as History Picture 2849 // is used in the view system. 2850 return; 2851 } 2852 int vx = contentToViewX(cx); 2853 int vy = contentToViewY(cy); 2854 pinScrollTo(vx, vy, true, 0); 2855 } 2856 2857 /** 2858 * These are from webkit, and are in content coordinate system (unzoomed) 2859 */ 2860 private void contentSizeChanged(boolean updateLayout) { 2861 // suppress 0,0 since we usually see real dimensions soon after 2862 // this avoids drawing the prev content in a funny place. If we find a 2863 // way to consolidate these notifications, this check may become 2864 // obsolete 2865 if ((mContentWidth | mContentHeight) == 0) { 2866 return; 2867 } 2868 2869 if (mHeightCanMeasure) { 2870 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2871 || updateLayout) { 2872 requestLayout(); 2873 } 2874 } else if (mWidthCanMeasure) { 2875 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2876 || updateLayout) { 2877 requestLayout(); 2878 } 2879 } else { 2880 // If we don't request a layout, try to send our view size to the 2881 // native side to ensure that WebCore has the correct dimensions. 2882 sendViewSizeZoom(); 2883 } 2884 } 2885 2886 /** 2887 * Set the WebViewClient that will receive various notifications and 2888 * requests. This will replace the current handler. 2889 * @param client An implementation of WebViewClient. 2890 */ 2891 public void setWebViewClient(WebViewClient client) { 2892 mCallbackProxy.setWebViewClient(client); 2893 } 2894 2895 /** 2896 * Gets the WebViewClient 2897 * @return the current WebViewClient instance. 2898 * 2899 *@hide pending API council approval. 2900 */ 2901 public WebViewClient getWebViewClient() { 2902 return mCallbackProxy.getWebViewClient(); 2903 } 2904 2905 /** 2906 * Register the interface to be used when content can not be handled by 2907 * the rendering engine, and should be downloaded instead. This will replace 2908 * the current handler. 2909 * @param listener An implementation of DownloadListener. 2910 */ 2911 public void setDownloadListener(DownloadListener listener) { 2912 mCallbackProxy.setDownloadListener(listener); 2913 } 2914 2915 /** 2916 * Set the chrome handler. This is an implementation of WebChromeClient for 2917 * use in handling Javascript dialogs, favicons, titles, and the progress. 2918 * This will replace the current handler. 2919 * @param client An implementation of WebChromeClient. 2920 */ 2921 public void setWebChromeClient(WebChromeClient client) { 2922 mCallbackProxy.setWebChromeClient(client); 2923 } 2924 2925 /** 2926 * Gets the chrome handler. 2927 * @return the current WebChromeClient instance. 2928 * 2929 * @hide API council approval. 2930 */ 2931 public WebChromeClient getWebChromeClient() { 2932 return mCallbackProxy.getWebChromeClient(); 2933 } 2934 2935 /** 2936 * Set the back/forward list client. This is an implementation of 2937 * WebBackForwardListClient for handling new items and changes in the 2938 * history index. 2939 * @param client An implementation of WebBackForwardListClient. 2940 * {@hide} 2941 */ 2942 public void setWebBackForwardListClient(WebBackForwardListClient client) { 2943 mCallbackProxy.setWebBackForwardListClient(client); 2944 } 2945 2946 /** 2947 * Gets the WebBackForwardListClient. 2948 * {@hide} 2949 */ 2950 public WebBackForwardListClient getWebBackForwardListClient() { 2951 return mCallbackProxy.getWebBackForwardListClient(); 2952 } 2953 2954 /** 2955 * Set the Picture listener. This is an interface used to receive 2956 * notifications of a new Picture. 2957 * @param listener An implementation of WebView.PictureListener. 2958 */ 2959 public void setPictureListener(PictureListener listener) { 2960 mPictureListener = listener; 2961 } 2962 2963 /** 2964 * {@hide} 2965 */ 2966 /* FIXME: Debug only! Remove for SDK! */ 2967 public void externalRepresentation(Message callback) { 2968 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2969 } 2970 2971 /** 2972 * {@hide} 2973 */ 2974 /* FIXME: Debug only! Remove for SDK! */ 2975 public void documentAsText(Message callback) { 2976 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2977 } 2978 2979 /** 2980 * Use this function to bind an object to Javascript so that the 2981 * methods can be accessed from Javascript. 2982 * <p><strong>IMPORTANT:</strong> 2983 * <ul> 2984 * <li> Using addJavascriptInterface() allows JavaScript to control your 2985 * application. This can be a very useful feature or a dangerous security 2986 * issue. When the HTML in the WebView is untrustworthy (for example, part 2987 * or all of the HTML is provided by some person or process), then an 2988 * attacker could inject HTML that will execute your code and possibly any 2989 * code of the attacker's choosing.<br> 2990 * Do not use addJavascriptInterface() unless all of the HTML in this 2991 * WebView was written by you.</li> 2992 * <li> The Java object that is bound runs in another thread and not in 2993 * the thread that it was constructed in.</li> 2994 * </ul></p> 2995 * @param obj The class instance to bind to Javascript 2996 * @param interfaceName The name to used to expose the class in Javascript 2997 */ 2998 public void addJavascriptInterface(Object obj, String interfaceName) { 2999 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3000 arg.mObject = obj; 3001 arg.mInterfaceName = interfaceName; 3002 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3003 } 3004 3005 /** 3006 * Return the WebSettings object used to control the settings for this 3007 * WebView. 3008 * @return A WebSettings object that can be used to control this WebView's 3009 * settings. 3010 */ 3011 public WebSettings getSettings() { 3012 return mWebViewCore.getSettings(); 3013 } 3014 3015 /** 3016 * Use this method to inform the webview about packages that are installed 3017 * in the system. This information will be used by the 3018 * navigator.isApplicationInstalled() API. 3019 * @param packageNames is a set of package names that are known to be 3020 * installed in the system. 3021 * 3022 * @hide not a public API 3023 */ 3024 public void addPackageNames(Set<String> packageNames) { 3025 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, packageNames); 3026 } 3027 3028 /** 3029 * Use this method to inform the webview about single packages that are 3030 * installed in the system. This information will be used by the 3031 * navigator.isApplicationInstalled() API. 3032 * @param packageName is the name of a package that is known to be 3033 * installed in the system. 3034 * 3035 * @hide not a public API 3036 */ 3037 public void addPackageName(String packageName) { 3038 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 3039 } 3040 3041 /** 3042 * Use this method to inform the webview about packages that are uninstalled 3043 * in the system. This information will be used by the 3044 * navigator.isApplicationInstalled() API. 3045 * @param packageName is the name of a package that has been uninstalled in 3046 * the system. 3047 * 3048 * @hide not a public API 3049 */ 3050 public void removePackageName(String packageName) { 3051 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 3052 } 3053 3054 /** 3055 * Return the list of currently loaded plugins. 3056 * @return The list of currently loaded plugins. 3057 * 3058 * @deprecated This was used for Gears, which has been deprecated. 3059 */ 3060 @Deprecated 3061 public static synchronized PluginList getPluginList() { 3062 return new PluginList(); 3063 } 3064 3065 /** 3066 * @deprecated This was used for Gears, which has been deprecated. 3067 */ 3068 @Deprecated 3069 public void refreshPlugins(boolean reloadOpenPages) { } 3070 3071 //------------------------------------------------------------------------- 3072 // Override View methods 3073 //------------------------------------------------------------------------- 3074 3075 @Override 3076 protected void finalize() throws Throwable { 3077 try { 3078 destroy(); 3079 } finally { 3080 super.finalize(); 3081 } 3082 } 3083 3084 @Override 3085 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3086 if (child == mTitleBar) { 3087 // When drawing the title bar, move it horizontally to always show 3088 // at the top of the WebView. 3089 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3090 } 3091 return super.drawChild(canvas, child, drawingTime); 3092 } 3093 3094 private void drawContent(Canvas canvas) { 3095 // Update the buttons in the picture, so when we draw the picture 3096 // to the screen, they are in the correct state. 3097 // Tell the native side if user is a) touching the screen, 3098 // b) pressing the trackball down, or c) pressing the enter key 3099 // If the cursor is on a button, we need to draw it in the pressed 3100 // state. 3101 // If mNativeClass is 0, we should not reach here, so we do not 3102 // need to check it again. 3103 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3104 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3105 || mTrackballDown || mGotCenterDown, false); 3106 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3107 } 3108 3109 @Override 3110 protected void onDraw(Canvas canvas) { 3111 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3112 if (mNativeClass == 0) { 3113 return; 3114 } 3115 3116 // if both mContentWidth and mContentHeight are 0, it means there is no 3117 // valid Picture passed to WebView yet. This can happen when WebView 3118 // just starts. Draw the background and return. 3119 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3120 canvas.drawColor(mBackgroundColor); 3121 return; 3122 } 3123 3124 int saveCount = canvas.save(); 3125 if (mTitleBar != null) { 3126 canvas.translate(0, (int) mTitleBar.getHeight()); 3127 } 3128 if (mDragTrackerHandler == null) { 3129 drawContent(canvas); 3130 } else { 3131 if (!mDragTrackerHandler.draw(canvas)) { 3132 // sometimes the tracker doesn't draw, even though its active 3133 drawContent(canvas); 3134 } 3135 if (mDragTrackerHandler.isFinished()) { 3136 mDragTrackerHandler = null; 3137 } 3138 } 3139 canvas.restoreToCount(saveCount); 3140 3141 // Now draw the shadow. 3142 int titleH = getVisibleTitleHeight(); 3143 if (mTitleBar != null && titleH == 0) { 3144 int height = (int) (5f * getContext().getResources() 3145 .getDisplayMetrics().density); 3146 mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(), 3147 mScrollY + height); 3148 mTitleShadow.draw(canvas); 3149 } 3150 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3151 invalidate(); 3152 } 3153 mWebViewCore.signalRepaintDone(); 3154 } 3155 3156 @Override 3157 public void setLayoutParams(ViewGroup.LayoutParams params) { 3158 if (params.height == LayoutParams.WRAP_CONTENT) { 3159 mWrapContent = true; 3160 } 3161 super.setLayoutParams(params); 3162 } 3163 3164 @Override 3165 public boolean performLongClick() { 3166 // performLongClick() is the result of a delayed message. If we switch 3167 // to windows overview, the WebView will be temporarily removed from the 3168 // view system. In that case, do nothing. 3169 if (getParent() == null) return false; 3170 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3171 // Send the click so that the textfield is in focus 3172 centerKeyPressOnTextField(); 3173 rebuildWebTextView(); 3174 } 3175 if (inEditingMode()) { 3176 return mWebTextView.performLongClick(); 3177 } else { 3178 return super.performLongClick(); 3179 } 3180 } 3181 3182 boolean inAnimateZoom() { 3183 return mZoomScale != 0; 3184 } 3185 3186 /** 3187 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3188 * has changed. This is especially important for password fields, which are 3189 * drawn by the WebTextView, since it conveys more information than what 3190 * webkit draws. Thus we need to reposition it to show in the correct 3191 * place. 3192 */ 3193 private boolean mNeedToAdjustWebTextView; 3194 3195 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3196 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3197 Rect vBox = contentToViewRect(contentBounds); 3198 Rect visibleRect = new Rect(); 3199 calcOurVisibleRect(visibleRect); 3200 // If the textfield is on screen, place the WebTextView in 3201 // its new place, accounting for our new scroll/zoom values, 3202 // and adjust its textsize. 3203 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3204 : visibleRect.contains(vBox)) { 3205 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3206 vBox.height()); 3207 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3208 contentToViewDimension( 3209 nativeFocusCandidateTextSize())); 3210 return true; 3211 } else { 3212 // The textfield is now off screen. The user probably 3213 // was not zooming to see the textfield better. Remove 3214 // the WebTextView. If the user types a key, and the 3215 // textfield is still in focus, we will reconstruct 3216 // the WebTextView and scroll it back on screen. 3217 mWebTextView.remove(); 3218 return false; 3219 } 3220 } 3221 3222 private void drawExtras(Canvas canvas, int extras) { 3223 // If mNativeClass is 0, we should not reach here, so we do not 3224 // need to check it again. 3225 // Currently for each draw we compute the animation values; 3226 // We may in the future decide to do that independently. 3227 if (nativeEvaluateLayersAnimations()) { 3228 // If we have unfinished (or unstarted) animations, 3229 // we ask for a repaint. 3230 invalidate(); 3231 } 3232 3233 nativeDrawExtras(canvas, extras); 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 mWebViewCore.drawContentPicture(canvas, color, 3319 (animateZoom || mPreviewZoomOnly), animateScroll); 3320 if (mNativeClass == 0) return; 3321 // decide which adornments to draw 3322 int extras = DRAW_EXTRAS_NONE; 3323 if (mFindIsUp) { 3324 // When the FindDialog is up, only draw the matches if we are not in 3325 // the process of scrolling them into view. 3326 if (!animateScroll) { 3327 extras = DRAW_EXTRAS_FIND; 3328 } 3329 } else if (mShiftIsPressed && !nativeFocusIsPlugin()) { 3330 if (!animateZoom && !mPreviewZoomOnly) { 3331 extras = DRAW_EXTRAS_SELECTION; 3332 nativeSetSelectionRegion(mTouchSelection || mExtendSelection); 3333 nativeSetSelectionPointer(!mTouchSelection, mInvActualScale, 3334 mSelectX, mSelectY - getTitleHeight(), 3335 mExtendSelection); 3336 } 3337 } else if (drawCursorRing) { 3338 extras = DRAW_EXTRAS_CURSOR_RING; 3339 } 3340 drawExtras(canvas, extras); 3341 3342 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3343 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3344 mTouchMode = TOUCH_SHORTPRESS_MODE; 3345 HitTestResult hitTest = getHitTestResult(); 3346 if (hitTest == null 3347 || hitTest.mType == HitTestResult.UNKNOWN_TYPE) { 3348 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3349 } 3350 } 3351 } 3352 if (mFocusSizeChanged) { 3353 mFocusSizeChanged = false; 3354 // If we are zooming, this will get handled above, when the zoom 3355 // finishes. We also do not need to do this unless the WebTextView 3356 // is showing. 3357 if (!animateZoom && inEditingMode()) { 3358 didUpdateTextViewBounds(true); 3359 } 3360 } 3361 } 3362 3363 // draw history 3364 private boolean mDrawHistory = false; 3365 private Picture mHistoryPicture = null; 3366 private int mHistoryWidth = 0; 3367 private int mHistoryHeight = 0; 3368 3369 // Only check the flag, can be called from WebCore thread 3370 boolean drawHistory() { 3371 return mDrawHistory; 3372 } 3373 3374 // Should only be called in UI thread 3375 void switchOutDrawHistory() { 3376 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3377 if (mDrawHistory && mWebViewCore.pictureReady()) { 3378 mDrawHistory = false; 3379 mHistoryPicture = null; 3380 invalidate(); 3381 int oldScrollX = mScrollX; 3382 int oldScrollY = mScrollY; 3383 mScrollX = pinLocX(mScrollX); 3384 mScrollY = pinLocY(mScrollY); 3385 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3386 mUserScroll = false; 3387 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3388 oldScrollY); 3389 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 3390 } else { 3391 sendOurVisibleRect(); 3392 } 3393 } 3394 } 3395 3396 WebViewCore.CursorData cursorData() { 3397 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3398 result.mMoveGeneration = nativeMoveGeneration(); 3399 result.mFrame = nativeCursorFramePointer(); 3400 Point position = nativeCursorPosition(); 3401 result.mX = position.x; 3402 result.mY = position.y; 3403 return result; 3404 } 3405 3406 /** 3407 * Delete text from start to end in the focused textfield. If there is no 3408 * focus, or if start == end, silently fail. If start and end are out of 3409 * order, swap them. 3410 * @param start Beginning of selection to delete. 3411 * @param end End of selection to delete. 3412 */ 3413 /* package */ void deleteSelection(int start, int end) { 3414 mTextGeneration++; 3415 WebViewCore.TextSelectionData data 3416 = new WebViewCore.TextSelectionData(start, end); 3417 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3418 data); 3419 } 3420 3421 /** 3422 * Set the selection to (start, end) in the focused textfield. If start and 3423 * end are out of order, swap them. 3424 * @param start Beginning of selection. 3425 * @param end End of selection. 3426 */ 3427 /* package */ void setSelection(int start, int end) { 3428 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3429 } 3430 3431 @Override 3432 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3433 InputConnection connection = super.onCreateInputConnection(outAttrs); 3434 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3435 return connection; 3436 } 3437 3438 /** 3439 * Called in response to a message from webkit telling us that the soft 3440 * keyboard should be launched. 3441 */ 3442 private void displaySoftKeyboard(boolean isTextView) { 3443 InputMethodManager imm = (InputMethodManager) 3444 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3445 3446 // bring it back to the default scale so that user can enter text 3447 boolean zoom = mActualScale < mDefaultScale; 3448 if (zoom) { 3449 mInZoomOverview = false; 3450 mZoomCenterX = mLastTouchX; 3451 mZoomCenterY = mLastTouchY; 3452 // do not change text wrap scale so that there is no reflow 3453 setNewZoomScale(mDefaultScale, false, false); 3454 } 3455 if (isTextView) { 3456 rebuildWebTextView(); 3457 if (inEditingMode()) { 3458 imm.showSoftInput(mWebTextView, 0); 3459 if (zoom) { 3460 didUpdateTextViewBounds(true); 3461 } 3462 return; 3463 } 3464 } 3465 // Used by plugins. 3466 // Also used if the navigation cache is out of date, and 3467 // does not recognize that a textfield is in focus. In that 3468 // case, use WebView as the targeted view. 3469 // see http://b/issue?id=2457459 3470 imm.showSoftInput(this, 0); 3471 } 3472 3473 // Called by WebKit to instruct the UI to hide the keyboard 3474 private void hideSoftKeyboard() { 3475 InputMethodManager imm = (InputMethodManager) 3476 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3477 3478 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3479 } 3480 3481 /* 3482 * This method checks the current focus and cursor and potentially rebuilds 3483 * mWebTextView to have the appropriate properties, such as password, 3484 * multiline, and what text it contains. It also removes it if necessary. 3485 */ 3486 /* package */ void rebuildWebTextView() { 3487 // If the WebView does not have focus, do nothing until it gains focus. 3488 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3489 return; 3490 } 3491 boolean alreadyThere = inEditingMode(); 3492 // inEditingMode can only return true if mWebTextView is non-null, 3493 // so we can safely call remove() if (alreadyThere) 3494 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3495 if (alreadyThere) { 3496 mWebTextView.remove(); 3497 } 3498 return; 3499 } 3500 // At this point, we know we have found an input field, so go ahead 3501 // and create the WebTextView if necessary. 3502 if (mWebTextView == null) { 3503 mWebTextView = new WebTextView(mContext, WebView.this); 3504 // Initialize our generation number. 3505 mTextGeneration = 0; 3506 } 3507 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3508 contentToViewDimension(nativeFocusCandidateTextSize())); 3509 Rect visibleRect = new Rect(); 3510 calcOurContentVisibleRect(visibleRect); 3511 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3512 // should be in content coordinates. 3513 Rect bounds = nativeFocusCandidateNodeBounds(); 3514 Rect vBox = contentToViewRect(bounds); 3515 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3516 if (!Rect.intersects(bounds, visibleRect)) { 3517 mWebTextView.bringIntoView(); 3518 } 3519 String text = nativeFocusCandidateText(); 3520 int nodePointer = nativeFocusCandidatePointer(); 3521 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3522 // It is possible that we have the same textfield, but it has moved, 3523 // i.e. In the case of opening/closing the screen. 3524 // In that case, we need to set the dimensions, but not the other 3525 // aspects. 3526 // If the text has been changed by webkit, update it. However, if 3527 // there has been more UI text input, ignore it. We will receive 3528 // another update when that text is recognized. 3529 if (text != null && !text.equals(mWebTextView.getText().toString()) 3530 && nativeTextGeneration() == mTextGeneration) { 3531 mWebTextView.setTextAndKeepSelection(text); 3532 } 3533 } else { 3534 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3535 Gravity.RIGHT : Gravity.NO_GRAVITY); 3536 // This needs to be called before setType, which may call 3537 // requestFormData, and it needs to have the correct nodePointer. 3538 mWebTextView.setNodePointer(nodePointer); 3539 mWebTextView.setType(nativeFocusCandidateType()); 3540 if (null == text) { 3541 if (DebugFlags.WEB_VIEW) { 3542 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3543 } 3544 text = ""; 3545 } 3546 mWebTextView.setTextAndKeepSelection(text); 3547 InputMethodManager imm = InputMethodManager.peekInstance(); 3548 if (imm != null && imm.isActive(mWebTextView)) { 3549 imm.restartInput(mWebTextView); 3550 } 3551 } 3552 mWebTextView.requestFocus(); 3553 } 3554 3555 /** 3556 * Called by WebTextView to find saved form data associated with the 3557 * textfield 3558 * @param name Name of the textfield. 3559 * @param nodePointer Pointer to the node of the textfield, so it can be 3560 * compared to the currently focused textfield when the data is 3561 * retrieved. 3562 */ 3563 /* package */ void requestFormData(String name, int nodePointer) { 3564 if (mWebViewCore.getSettings().getSaveFormData()) { 3565 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3566 update.arg1 = nodePointer; 3567 RequestFormData updater = new RequestFormData(name, getUrl(), 3568 update); 3569 Thread t = new Thread(updater); 3570 t.start(); 3571 } 3572 } 3573 3574 /** 3575 * Pass a message to find out the <label> associated with the <input> 3576 * identified by nodePointer 3577 * @param framePointer Pointer to the frame containing the <input> node 3578 * @param nodePointer Pointer to the node for which a <label> is desired. 3579 */ 3580 /* package */ void requestLabel(int framePointer, int nodePointer) { 3581 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3582 nodePointer); 3583 } 3584 3585 /* 3586 * This class requests an Adapter for the WebTextView which shows past 3587 * entries stored in the database. It is a Runnable so that it can be done 3588 * in its own thread, without slowing down the UI. 3589 */ 3590 private class RequestFormData implements Runnable { 3591 private String mName; 3592 private String mUrl; 3593 private Message mUpdateMessage; 3594 3595 public RequestFormData(String name, String url, Message msg) { 3596 mName = name; 3597 mUrl = url; 3598 mUpdateMessage = msg; 3599 } 3600 3601 public void run() { 3602 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3603 if (pastEntries.size() > 0) { 3604 AutoCompleteAdapter adapter = new 3605 AutoCompleteAdapter(mContext, pastEntries); 3606 mUpdateMessage.obj = adapter; 3607 mUpdateMessage.sendToTarget(); 3608 } 3609 } 3610 } 3611 3612 /** 3613 * Dump the display tree to "/sdcard/displayTree.txt" 3614 * 3615 * @hide debug only 3616 */ 3617 public void dumpDisplayTree() { 3618 nativeDumpDisplayTree(getUrl()); 3619 } 3620 3621 /** 3622 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 3623 * "/sdcard/domTree.txt" 3624 * 3625 * @hide debug only 3626 */ 3627 public void dumpDomTree(boolean toFile) { 3628 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 3629 } 3630 3631 /** 3632 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 3633 * to "/sdcard/renderTree.txt" 3634 * 3635 * @hide debug only 3636 */ 3637 public void dumpRenderTree(boolean toFile) { 3638 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 3639 } 3640 3641 /** 3642 * Dump the V8 counters to standard output. 3643 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 3644 * true. Otherwise, this will do nothing. 3645 * 3646 * @hide debug only 3647 */ 3648 public void dumpV8Counters() { 3649 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 3650 } 3651 3652 // This is used to determine long press with the center key. Does not 3653 // affect long press with the trackball/touch. 3654 private boolean mGotCenterDown = false; 3655 3656 @Override 3657 public boolean onKeyDown(int keyCode, KeyEvent event) { 3658 if (DebugFlags.WEB_VIEW) { 3659 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3660 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3661 } 3662 3663 if (mNativeClass == 0) { 3664 return false; 3665 } 3666 3667 // do this hack up front, so it always works, regardless of touch-mode 3668 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3669 mAutoRedraw = !mAutoRedraw; 3670 if (mAutoRedraw) { 3671 invalidate(); 3672 } 3673 return true; 3674 } 3675 3676 // Bubble up the key event if 3677 // 1. it is a system key; or 3678 // 2. the host application wants to handle it; 3679 if (event.isSystem() 3680 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3681 return false; 3682 } 3683 3684 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3685 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3686 if (nativeFocusIsPlugin()) { 3687 mShiftIsPressed = true; 3688 } else if (!nativeCursorWantsKeyEvents() && !mShiftIsPressed) { 3689 setUpSelectXY(); 3690 } 3691 } 3692 3693 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3694 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3695 switchOutDrawHistory(); 3696 if (nativeFocusIsPlugin()) { 3697 letPluginHandleNavKey(keyCode, event.getEventTime(), true); 3698 return true; 3699 } 3700 if (mShiftIsPressed) { 3701 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 3702 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 3703 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 3704 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 3705 int multiplier = event.getRepeatCount() + 1; 3706 moveSelection(xRate * multiplier, yRate * multiplier); 3707 return true; 3708 } 3709 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 3710 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3711 return true; 3712 } 3713 // Bubble up the key event as WebView doesn't handle it 3714 return false; 3715 } 3716 3717 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3718 switchOutDrawHistory(); 3719 if (event.getRepeatCount() == 0) { 3720 if (mShiftIsPressed && !nativeFocusIsPlugin()) { 3721 return true; // discard press if copy in progress 3722 } 3723 mGotCenterDown = true; 3724 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3725 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3726 // Already checked mNativeClass, so we do not need to check it 3727 // again. 3728 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3729 return true; 3730 } 3731 // Bubble up the key event as WebView doesn't handle it 3732 return false; 3733 } 3734 3735 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3736 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3737 // turn off copy select if a shift-key combo is pressed 3738 mExtendSelection = mShiftIsPressed = false; 3739 if (mTouchMode == TOUCH_SELECT_MODE) { 3740 mTouchMode = TOUCH_INIT_MODE; 3741 } 3742 } 3743 3744 if (getSettings().getNavDump()) { 3745 switch (keyCode) { 3746 case KeyEvent.KEYCODE_4: 3747 dumpDisplayTree(); 3748 break; 3749 case KeyEvent.KEYCODE_5: 3750 case KeyEvent.KEYCODE_6: 3751 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 3752 break; 3753 case KeyEvent.KEYCODE_7: 3754 case KeyEvent.KEYCODE_8: 3755 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 3756 break; 3757 case KeyEvent.KEYCODE_9: 3758 nativeInstrumentReport(); 3759 return true; 3760 } 3761 } 3762 3763 if (nativeCursorIsTextInput()) { 3764 // This message will put the node in focus, for the DOM's notion 3765 // of focus, and make the focuscontroller active 3766 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3767 nativeCursorNodePointer()); 3768 // This will bring up the WebTextView and put it in focus, for 3769 // our view system's notion of focus 3770 rebuildWebTextView(); 3771 // Now we need to pass the event to it 3772 if (inEditingMode()) { 3773 mWebTextView.setDefaultSelection(); 3774 return mWebTextView.dispatchKeyEvent(event); 3775 } 3776 } else if (nativeHasFocusNode()) { 3777 // In this case, the cursor is not on a text input, but the focus 3778 // might be. Check it, and if so, hand over to the WebTextView. 3779 rebuildWebTextView(); 3780 if (inEditingMode()) { 3781 mWebTextView.setDefaultSelection(); 3782 return mWebTextView.dispatchKeyEvent(event); 3783 } 3784 } 3785 3786 // TODO: should we pass all the keys to DOM or check the meta tag 3787 if (nativeCursorWantsKeyEvents() || true) { 3788 // pass the key to DOM 3789 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3790 // return true as DOM handles the key 3791 return true; 3792 } 3793 3794 // Bubble up the key event as WebView doesn't handle it 3795 return false; 3796 } 3797 3798 @Override 3799 public boolean onKeyUp(int keyCode, KeyEvent event) { 3800 if (DebugFlags.WEB_VIEW) { 3801 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3802 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3803 } 3804 3805 if (mNativeClass == 0) { 3806 return false; 3807 } 3808 3809 // special CALL handling when cursor node's href is "tel:XXX" 3810 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3811 String text = nativeCursorText(); 3812 if (!nativeCursorIsTextInput() && text != null 3813 && text.startsWith(SCHEME_TEL)) { 3814 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3815 getContext().startActivity(intent); 3816 return true; 3817 } 3818 } 3819 3820 // Bubble up the key event if 3821 // 1. it is a system key; or 3822 // 2. the host application wants to handle it; 3823 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3824 return false; 3825 } 3826 3827 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3828 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3829 if (nativeFocusIsPlugin()) { 3830 mShiftIsPressed = false; 3831 } else if (commitCopy()) { 3832 return true; 3833 } 3834 } 3835 3836 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3837 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3838 if (nativeFocusIsPlugin()) { 3839 letPluginHandleNavKey(keyCode, event.getEventTime(), false); 3840 return true; 3841 } 3842 // always handle the navigation keys in the UI thread 3843 // Bubble up the key event as WebView doesn't handle it 3844 return false; 3845 } 3846 3847 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3848 // remove the long press message first 3849 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3850 mGotCenterDown = false; 3851 3852 if (mShiftIsPressed && !nativeFocusIsPlugin()) { 3853 if (mExtendSelection) { 3854 commitCopy(); 3855 } else { 3856 mExtendSelection = true; 3857 invalidate(); // draw the i-beam instead of the arrow 3858 } 3859 return true; // discard press if copy in progress 3860 } 3861 3862 // perform the single click 3863 Rect visibleRect = sendOurVisibleRect(); 3864 // Note that sendOurVisibleRect calls viewToContent, so the 3865 // coordinates should be in content coordinates. 3866 if (!nativeCursorIntersects(visibleRect)) { 3867 return false; 3868 } 3869 WebViewCore.CursorData data = cursorData(); 3870 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3871 playSoundEffect(SoundEffectConstants.CLICK); 3872 if (nativeCursorIsTextInput()) { 3873 rebuildWebTextView(); 3874 centerKeyPressOnTextField(); 3875 if (inEditingMode()) { 3876 mWebTextView.setDefaultSelection(); 3877 } 3878 return true; 3879 } 3880 clearTextEntry(true); 3881 nativeSetFollowedLink(true); 3882 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 3883 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3884 nativeCursorNodePointer()); 3885 } 3886 return true; 3887 } 3888 3889 // TODO: should we pass all the keys to DOM or check the meta tag 3890 if (nativeCursorWantsKeyEvents() || true) { 3891 // pass the key to DOM 3892 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3893 // return true as DOM handles the key 3894 return true; 3895 } 3896 3897 // Bubble up the key event as WebView doesn't handle it 3898 return false; 3899 } 3900 3901 private void setUpSelectXY() { 3902 mExtendSelection = false; 3903 mShiftIsPressed = true; 3904 if (nativeHasCursorNode()) { 3905 Rect rect = nativeCursorNodeBounds(); 3906 mSelectX = contentToViewX(rect.left); 3907 mSelectY = contentToViewY(rect.top); 3908 } else if (mLastTouchY > getVisibleTitleHeight()) { 3909 mSelectX = mScrollX + (int) mLastTouchX; 3910 mSelectY = mScrollY + (int) mLastTouchY; 3911 } else { 3912 mSelectX = mScrollX + getViewWidth() / 2; 3913 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 3914 } 3915 nativeHideCursor(); 3916 } 3917 3918 /** 3919 * Use this method to put the WebView into text selection mode. 3920 * Do not rely on this functionality; it will be deprecated in the future. 3921 */ 3922 public void emulateShiftHeld() { 3923 if (0 == mNativeClass) return; // client isn't initialized 3924 setUpSelectXY(); 3925 } 3926 3927 private boolean commitCopy() { 3928 boolean copiedSomething = false; 3929 if (mExtendSelection) { 3930 String selection = nativeGetSelection(); 3931 if (selection != "") { 3932 if (DebugFlags.WEB_VIEW) { 3933 Log.v(LOGTAG, "commitCopy \"" + selection + "\""); 3934 } 3935 Toast.makeText(mContext 3936 , com.android.internal.R.string.text_copied 3937 , Toast.LENGTH_SHORT).show(); 3938 copiedSomething = true; 3939 try { 3940 IClipboard clip = IClipboard.Stub.asInterface( 3941 ServiceManager.getService("clipboard")); 3942 clip.setClipboardText(selection); 3943 } catch (android.os.RemoteException e) { 3944 Log.e(LOGTAG, "Clipboard failed", e); 3945 } 3946 } 3947 mExtendSelection = false; 3948 } 3949 mShiftIsPressed = false; 3950 invalidate(); // remove selection region and pointer 3951 if (mTouchMode == TOUCH_SELECT_MODE) { 3952 mTouchMode = TOUCH_INIT_MODE; 3953 } 3954 return copiedSomething; 3955 } 3956 3957 @Override 3958 protected void onAttachedToWindow() { 3959 super.onAttachedToWindow(); 3960 if (hasWindowFocus()) setActive(true); 3961 } 3962 3963 @Override 3964 protected void onDetachedFromWindow() { 3965 clearTextEntry(false); 3966 dismissZoomControl(); 3967 if (hasWindowFocus()) setActive(false); 3968 super.onDetachedFromWindow(); 3969 } 3970 3971 /** 3972 * @deprecated WebView no longer needs to implement 3973 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3974 */ 3975 @Deprecated 3976 public void onChildViewAdded(View parent, View child) {} 3977 3978 /** 3979 * @deprecated WebView no longer needs to implement 3980 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3981 */ 3982 @Deprecated 3983 public void onChildViewRemoved(View p, View child) {} 3984 3985 /** 3986 * @deprecated WebView should not have implemented 3987 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3988 * does nothing now. 3989 */ 3990 @Deprecated 3991 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3992 } 3993 3994 private void setActive(boolean active) { 3995 if (active) { 3996 if (hasFocus()) { 3997 // If our window regained focus, and we have focus, then begin 3998 // drawing the cursor ring 3999 mDrawCursorRing = true; 4000 if (mNativeClass != 0) { 4001 nativeRecordButtons(true, false, true); 4002 if (inEditingMode()) { 4003 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 4004 } 4005 } 4006 } else { 4007 // If our window gained focus, but we do not have it, do not 4008 // draw the cursor ring. 4009 mDrawCursorRing = false; 4010 // We do not call nativeRecordButtons here because we assume 4011 // that when we lost focus, or window focus, it got called with 4012 // false for the first parameter 4013 } 4014 } else { 4015 if (mWebViewCore != null && getSettings().getBuiltInZoomControls() 4016 && !getZoomButtonsController().isVisible()) { 4017 /* 4018 * The zoom controls come in their own window, so our window 4019 * loses focus. Our policy is to not draw the cursor ring if 4020 * our window is not focused, but this is an exception since 4021 * the user can still navigate the web page with the zoom 4022 * controls showing. 4023 */ 4024 // If our window has lost focus, stop drawing the cursor ring 4025 mDrawCursorRing = false; 4026 } 4027 mGotKeyDown = false; 4028 mShiftIsPressed = false; 4029 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4030 mTouchMode = TOUCH_DONE_MODE; 4031 if (mNativeClass != 0) { 4032 nativeRecordButtons(false, false, true); 4033 } 4034 setFocusControllerInactive(); 4035 } 4036 invalidate(); 4037 } 4038 4039 // To avoid drawing the cursor ring, and remove the TextView when our window 4040 // loses focus. 4041 @Override 4042 public void onWindowFocusChanged(boolean hasWindowFocus) { 4043 setActive(hasWindowFocus); 4044 if (hasWindowFocus) { 4045 BrowserFrame.sJavaBridge.setActiveWebView(this); 4046 } else { 4047 BrowserFrame.sJavaBridge.removeActiveWebView(this); 4048 } 4049 super.onWindowFocusChanged(hasWindowFocus); 4050 } 4051 4052 /* 4053 * Pass a message to WebCore Thread, telling the WebCore::Page's 4054 * FocusController to be "inactive" so that it will 4055 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4056 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4057 */ 4058 /* package */ void setFocusControllerInactive() { 4059 // Do not need to also check whether mWebViewCore is null, because 4060 // mNativeClass is only set if mWebViewCore is non null 4061 if (mNativeClass == 0) return; 4062 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 4063 } 4064 4065 @Override 4066 protected void onFocusChanged(boolean focused, int direction, 4067 Rect previouslyFocusedRect) { 4068 if (DebugFlags.WEB_VIEW) { 4069 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4070 } 4071 if (focused) { 4072 // When we regain focus, if we have window focus, resume drawing 4073 // the cursor ring 4074 if (hasWindowFocus()) { 4075 mDrawCursorRing = true; 4076 if (mNativeClass != 0) { 4077 nativeRecordButtons(true, false, true); 4078 } 4079 //} else { 4080 // The WebView has gained focus while we do not have 4081 // windowfocus. When our window lost focus, we should have 4082 // called nativeRecordButtons(false...) 4083 } 4084 } else { 4085 // When we lost focus, unless focus went to the TextView (which is 4086 // true if we are in editing mode), stop drawing the cursor ring. 4087 if (!inEditingMode()) { 4088 mDrawCursorRing = false; 4089 if (mNativeClass != 0) { 4090 nativeRecordButtons(false, false, true); 4091 } 4092 setFocusControllerInactive(); 4093 } 4094 mGotKeyDown = false; 4095 } 4096 4097 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4098 } 4099 4100 /** 4101 * @hide 4102 */ 4103 @Override 4104 protected boolean setFrame(int left, int top, int right, int bottom) { 4105 boolean changed = super.setFrame(left, top, right, bottom); 4106 if (!changed && mHeightCanMeasure) { 4107 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4108 // in WebViewCore after we get the first layout. We do call 4109 // requestLayout() when we get contentSizeChanged(). But the View 4110 // system won't call onSizeChanged if the dimension is not changed. 4111 // In this case, we need to call sendViewSizeZoom() explicitly to 4112 // notify the WebKit about the new dimensions. 4113 sendViewSizeZoom(); 4114 } 4115 return changed; 4116 } 4117 4118 private static class PostScale implements Runnable { 4119 final WebView mWebView; 4120 final boolean mUpdateTextWrap; 4121 4122 public PostScale(WebView webView, boolean updateTextWrap) { 4123 mWebView = webView; 4124 mUpdateTextWrap = updateTextWrap; 4125 } 4126 4127 public void run() { 4128 if (mWebView.mWebViewCore != null) { 4129 // we always force, in case our height changed, in which case we 4130 // still want to send the notification over to webkit. 4131 mWebView.setNewZoomScale(mWebView.mActualScale, 4132 mUpdateTextWrap, true); 4133 // update the zoom buttons as the scale can be changed 4134 if (mWebView.getSettings().getBuiltInZoomControls()) { 4135 mWebView.updateZoomButtonsEnabled(); 4136 } 4137 } 4138 } 4139 } 4140 4141 @Override 4142 protected void onSizeChanged(int w, int h, int ow, int oh) { 4143 super.onSizeChanged(w, h, ow, oh); 4144 // Center zooming to the center of the screen. 4145 if (mZoomScale == 0) { // unless we're already zooming 4146 // To anchor at top left corner. 4147 mZoomCenterX = 0; 4148 mZoomCenterY = getVisibleTitleHeight(); 4149 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4150 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4151 } 4152 4153 // adjust the max viewport width depending on the view dimensions. This 4154 // is to ensure the scaling is not going insane. So do not shrink it if 4155 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4156 int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE); 4157 if (newMaxViewportWidth > sMaxViewportWidth) { 4158 sMaxViewportWidth = newMaxViewportWidth; 4159 } 4160 4161 // update mMinZoomScale if the minimum zoom scale is not fixed 4162 if (!mMinZoomScaleFixed) { 4163 // when change from narrow screen to wide screen, the new viewWidth 4164 // can be wider than the old content width. We limit the minimum 4165 // scale to 1.0f. The proper minimum scale will be calculated when 4166 // the new picture shows up. 4167 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 4168 / (mDrawHistory ? mHistoryPicture.getWidth() 4169 : mZoomOverviewWidth)); 4170 if (mInitialScaleInPercent > 0) { 4171 // limit the minZoomScale to the initialScale if it is set 4172 float initialScale = mInitialScaleInPercent / 100.0f; 4173 if (mMinZoomScale > initialScale) { 4174 mMinZoomScale = initialScale; 4175 } 4176 } 4177 } 4178 4179 dismissZoomControl(); 4180 4181 // onSizeChanged() is called during WebView layout. And any 4182 // requestLayout() is blocked during layout. As setNewZoomScale() will 4183 // call its child View to reposition itself through ViewManager's 4184 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 4185 // <b/> 4186 // only update the text wrap scale if width changed. 4187 post(new PostScale(this, w != ow)); 4188 } 4189 4190 @Override 4191 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4192 super.onScrollChanged(l, t, oldl, oldt); 4193 sendOurVisibleRect(); 4194 // update WebKit if visible title bar height changed. The logic is same 4195 // as getVisibleTitleHeight. 4196 int titleHeight = getTitleHeight(); 4197 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4198 sendViewSizeZoom(); 4199 } 4200 } 4201 4202 @Override 4203 public boolean dispatchKeyEvent(KeyEvent event) { 4204 boolean dispatch = true; 4205 4206 // Textfields and plugins need to receive the shift up key even if 4207 // another key was released while the shift key was held down. 4208 if (!inEditingMode() && (mNativeClass == 0 || !nativeFocusIsPlugin())) { 4209 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4210 mGotKeyDown = true; 4211 } else { 4212 if (!mGotKeyDown) { 4213 /* 4214 * We got a key up for which we were not the recipient of 4215 * the original key down. Don't give it to the view. 4216 */ 4217 dispatch = false; 4218 } 4219 mGotKeyDown = false; 4220 } 4221 } 4222 4223 if (dispatch) { 4224 return super.dispatchKeyEvent(event); 4225 } else { 4226 // We didn't dispatch, so let something else handle the key 4227 return false; 4228 } 4229 } 4230 4231 // Here are the snap align logic: 4232 // 1. If it starts nearly horizontally or vertically, snap align; 4233 // 2. If there is a dramitic direction change, let it go; 4234 // 3. If there is a same direction back and forth, lock it. 4235 4236 // adjustable parameters 4237 private int mMinLockSnapReverseDistance; 4238 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4239 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4240 4241 private static int sign(float x) { 4242 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4243 } 4244 4245 // if the page can scroll <= this value, we won't allow the drag tracker 4246 // to have any effect. 4247 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4248 4249 private class DragTrackerHandler { 4250 private final DragTracker mProxy; 4251 private final float mStartY, mStartX; 4252 private final float mMinDY, mMinDX; 4253 private final float mMaxDY, mMaxDX; 4254 private float mCurrStretchY, mCurrStretchX; 4255 private int mSX, mSY; 4256 private Interpolator mInterp; 4257 private float[] mXY = new float[2]; 4258 4259 // inner (non-state) classes can't have enums :( 4260 private static final int DRAGGING_STATE = 0; 4261 private static final int ANIMATING_STATE = 1; 4262 private static final int FINISHED_STATE = 2; 4263 private int mState; 4264 4265 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4266 mProxy = proxy; 4267 4268 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4269 int viewTop = getScrollY(); 4270 int viewBottom = viewTop + getHeight(); 4271 4272 mStartY = y; 4273 mMinDY = -viewTop; 4274 mMaxDY = docBottom - viewBottom; 4275 4276 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4277 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4278 " up/down= " + mMinDY + " " + mMaxDY); 4279 } 4280 4281 int docRight = computeHorizontalScrollRange(); 4282 int viewLeft = getScrollX(); 4283 int viewRight = viewLeft + getWidth(); 4284 mStartX = x; 4285 mMinDX = -viewLeft; 4286 mMaxDX = docRight - viewRight; 4287 4288 mState = DRAGGING_STATE; 4289 mProxy.onStartDrag(x, y); 4290 4291 // ensure we buildBitmap at least once 4292 mSX = -99999; 4293 } 4294 4295 private float computeStretch(float delta, float min, float max) { 4296 float stretch = 0; 4297 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4298 if (delta < min) { 4299 stretch = delta - min; 4300 } else if (delta > max) { 4301 stretch = delta - max; 4302 } 4303 } 4304 return stretch; 4305 } 4306 4307 public void dragTo(float x, float y) { 4308 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4309 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4310 4311 if ((mSnapScrollMode & SNAP_X) != 0) { 4312 sy = 0; 4313 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4314 sx = 0; 4315 } 4316 4317 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4318 mCurrStretchX = sx; 4319 mCurrStretchY = sy; 4320 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4321 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4322 " " + sy); 4323 } 4324 if (mProxy.onStretchChange(sx, sy)) { 4325 invalidate(); 4326 } 4327 } 4328 } 4329 4330 public void stopDrag() { 4331 final int DURATION = 200; 4332 int now = (int)SystemClock.uptimeMillis(); 4333 mInterp = new Interpolator(2); 4334 mXY[0] = mCurrStretchX; 4335 mXY[1] = mCurrStretchY; 4336 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4337 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4338 mInterp.setKeyFrame(0, now, mXY, blend); 4339 float[] zerozero = new float[] { 0, 0 }; 4340 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4341 mState = ANIMATING_STATE; 4342 4343 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4344 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4345 } 4346 } 4347 4348 // Call this after each draw. If it ruturns null, the tracker is done 4349 public boolean isFinished() { 4350 return mState == FINISHED_STATE; 4351 } 4352 4353 private int hiddenHeightOfTitleBar() { 4354 return getTitleHeight() - getVisibleTitleHeight(); 4355 } 4356 4357 // need a way to know if 565 or 8888 is the right config for 4358 // capturing the display and giving it to the drag proxy 4359 private Bitmap.Config offscreenBitmapConfig() { 4360 // hard code 565 for now 4361 return Bitmap.Config.RGB_565; 4362 } 4363 4364 /* If the tracker draws, then this returns true, otherwise it will 4365 return false, and draw nothing. 4366 */ 4367 public boolean draw(Canvas canvas) { 4368 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4369 int sx = getScrollX(); 4370 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4371 if (mSX != sx || mSY != sy) { 4372 buildBitmap(sx, sy); 4373 mSX = sx; 4374 mSY = sy; 4375 } 4376 4377 if (mState == ANIMATING_STATE) { 4378 Interpolator.Result result = mInterp.timeToValues(mXY); 4379 if (result == Interpolator.Result.FREEZE_END) { 4380 mState = FINISHED_STATE; 4381 return false; 4382 } else { 4383 mProxy.onStretchChange(mXY[0], mXY[1]); 4384 invalidate(); 4385 // fall through to the draw 4386 } 4387 } 4388 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4389 canvas.translate(sx, sy); 4390 mProxy.onDraw(canvas); 4391 canvas.restoreToCount(count); 4392 return true; 4393 } 4394 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4395 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4396 mCurrStretchX + " " + mCurrStretchY); 4397 } 4398 return false; 4399 } 4400 4401 private void buildBitmap(int sx, int sy) { 4402 int w = getWidth(); 4403 int h = getViewHeight(); 4404 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4405 Canvas canvas = new Canvas(bm); 4406 canvas.translate(-sx, -sy); 4407 drawContent(canvas); 4408 4409 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4410 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4411 " " + sy + " " + w + " " + h); 4412 } 4413 mProxy.onBitmapChange(bm); 4414 } 4415 } 4416 4417 /** @hide */ 4418 public static class DragTracker { 4419 public void onStartDrag(float x, float y) {} 4420 public boolean onStretchChange(float sx, float sy) { 4421 // return true to have us inval the view 4422 return false; 4423 } 4424 public void onStopDrag() {} 4425 public void onBitmapChange(Bitmap bm) {} 4426 public void onDraw(Canvas canvas) {} 4427 } 4428 4429 /** @hide */ 4430 public DragTracker getDragTracker() { 4431 return mDragTracker; 4432 } 4433 4434 /** @hide */ 4435 public void setDragTracker(DragTracker tracker) { 4436 mDragTracker = tracker; 4437 } 4438 4439 private DragTracker mDragTracker; 4440 private DragTrackerHandler mDragTrackerHandler; 4441 4442 private class ScaleDetectorListener implements 4443 ScaleGestureDetector.OnScaleGestureListener { 4444 4445 public boolean onScaleBegin(ScaleGestureDetector detector) { 4446 // cancel the single touch handling 4447 cancelTouch(); 4448 dismissZoomControl(); 4449 // reset the zoom overview mode so that the page won't auto grow 4450 mInZoomOverview = false; 4451 // If it is in password mode, turn it off so it does not draw 4452 // misplaced. 4453 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4454 mWebTextView.setInPassword(false); 4455 } 4456 4457 mViewManager.startZoom(); 4458 4459 return true; 4460 } 4461 4462 public void onScaleEnd(ScaleGestureDetector detector) { 4463 if (mPreviewZoomOnly) { 4464 mPreviewZoomOnly = false; 4465 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4466 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4467 // don't reflow when zoom in; when zoom out, do reflow if the 4468 // new scale is almost minimum scale; 4469 boolean reflowNow = (mActualScale - mMinZoomScale 4470 <= MINIMUM_SCALE_INCREMENT) 4471 || ((mActualScale <= 0.8 * mTextWrapScale)); 4472 // force zoom after mPreviewZoomOnly is set to false so that the 4473 // new view size will be passed to the WebKit 4474 setNewZoomScale(mActualScale, reflowNow, true); 4475 // call invalidate() to draw without zoom filter 4476 invalidate(); 4477 } 4478 // adjust the edit text view if needed 4479 if (inEditingMode() && didUpdateTextViewBounds(false) 4480 && nativeFocusCandidateIsPassword()) { 4481 // If it is a password field, start drawing the 4482 // WebTextView once again. 4483 mWebTextView.setInPassword(true); 4484 } 4485 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4486 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4487 // may trigger the unwanted fling. 4488 mTouchMode = TOUCH_PINCH_DRAG; 4489 mConfirmMove = true; 4490 startTouch(detector.getFocusX(), detector.getFocusY(), 4491 mLastTouchTime); 4492 4493 mViewManager.endZoom(); 4494 } 4495 4496 public boolean onScale(ScaleGestureDetector detector) { 4497 float scale = (float) (Math.round(detector.getScaleFactor() 4498 * mActualScale * 100) / 100.0); 4499 if (Math.abs(scale - mActualScale) >= MINIMUM_SCALE_INCREMENT) { 4500 mPreviewZoomOnly = true; 4501 // limit the scale change per step 4502 if (scale > mActualScale) { 4503 scale = Math.min(scale, mActualScale * 1.25f); 4504 } else { 4505 scale = Math.max(scale, mActualScale * 0.8f); 4506 } 4507 mZoomCenterX = detector.getFocusX(); 4508 mZoomCenterY = detector.getFocusY(); 4509 setNewZoomScale(scale, false, false); 4510 invalidate(); 4511 return true; 4512 } 4513 return false; 4514 } 4515 } 4516 4517 private boolean hitFocusedPlugin(int contentX, int contentY) { 4518 if (DebugFlags.WEB_VIEW) { 4519 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 4520 Rect r = nativeFocusNodeBounds(); 4521 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 4522 + ", " + r.right + ", " + r.bottom + ")"); 4523 } 4524 return nativeFocusIsPlugin() 4525 && nativeFocusNodeBounds().contains(contentX, contentY); 4526 } 4527 4528 private boolean shouldForwardTouchEvent() { 4529 return mFullScreenHolder != null || (mForwardTouchEvents 4530 && mTouchMode != TOUCH_SELECT_MODE 4531 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 4532 } 4533 4534 private boolean inFullScreenMode() { 4535 return mFullScreenHolder != null; 4536 } 4537 4538 @Override 4539 public boolean onTouchEvent(MotionEvent ev) { 4540 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4541 return false; 4542 } 4543 4544 if (DebugFlags.WEB_VIEW) { 4545 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4546 + mTouchMode); 4547 } 4548 4549 int action; 4550 float x, y; 4551 long eventTime = ev.getEventTime(); 4552 4553 // FIXME: we may consider to give WebKit an option to handle multi-touch 4554 // events later. 4555 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 4556 if (mMinZoomScale < mMaxZoomScale) { 4557 mScaleDetector.onTouchEvent(ev); 4558 if (mScaleDetector.isInProgress()) { 4559 mLastTouchTime = eventTime; 4560 return true; 4561 } 4562 x = mScaleDetector.getFocusX(); 4563 y = mScaleDetector.getFocusY(); 4564 action = ev.getAction() & MotionEvent.ACTION_MASK; 4565 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4566 cancelTouch(); 4567 action = MotionEvent.ACTION_DOWN; 4568 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4569 // set mLastTouchX/Y to the remaining point 4570 mLastTouchX = x; 4571 mLastTouchY = y; 4572 } else if (action == MotionEvent.ACTION_MOVE) { 4573 // negative x or y indicate it is on the edge, skip it. 4574 if (x < 0 || y < 0) { 4575 return true; 4576 } 4577 } 4578 } else { 4579 // if the page disallow zoom, skip multi-pointer action 4580 return true; 4581 } 4582 } else { 4583 action = ev.getAction(); 4584 x = ev.getX(); 4585 y = ev.getY(); 4586 } 4587 4588 // Due to the touch screen edge effect, a touch closer to the edge 4589 // always snapped to the edge. As getViewWidth() can be different from 4590 // getWidth() due to the scrollbar, adjusting the point to match 4591 // getViewWidth(). Same applied to the height. 4592 if (x > getViewWidth() - 1) { 4593 x = getViewWidth() - 1; 4594 } 4595 if (y > getViewHeightWithTitle() - 1) { 4596 y = getViewHeightWithTitle() - 1; 4597 } 4598 4599 float fDeltaX = mLastTouchX - x; 4600 float fDeltaY = mLastTouchY - y; 4601 int deltaX = (int) fDeltaX; 4602 int deltaY = (int) fDeltaY; 4603 int contentX = viewToContentX((int) x + mScrollX); 4604 int contentY = viewToContentY((int) y + mScrollY); 4605 4606 switch (action) { 4607 case MotionEvent.ACTION_DOWN: { 4608 mPreventDefault = PREVENT_DEFAULT_NO; 4609 mConfirmMove = false; 4610 if (!mScroller.isFinished()) { 4611 // stop the current scroll animation, but if this is 4612 // the start of a fling, allow it to add to the current 4613 // fling's velocity 4614 mScroller.abortAnimation(); 4615 mTouchMode = TOUCH_DRAG_START_MODE; 4616 mConfirmMove = true; 4617 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 4618 } else if (!inFullScreenMode() && mShiftIsPressed) { 4619 mSelectX = mScrollX + (int) x; 4620 mSelectY = mScrollY + (int) y; 4621 mTouchMode = TOUCH_SELECT_MODE; 4622 if (DebugFlags.WEB_VIEW) { 4623 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 4624 } 4625 nativeMoveSelection(contentX, contentY, false); 4626 mTouchSelection = mExtendSelection = true; 4627 invalidate(); // draw the i-beam instead of the arrow 4628 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4629 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4630 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4631 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4632 } else { 4633 // commit the short press action for the previous tap 4634 doShortPress(); 4635 mTouchMode = TOUCH_INIT_MODE; 4636 mDeferTouchProcess = (!inFullScreenMode() 4637 && mForwardTouchEvents) ? hitFocusedPlugin( 4638 contentX, contentY) : false; 4639 } 4640 } else { // the normal case 4641 mPreviewZoomOnly = false; 4642 mTouchMode = TOUCH_INIT_MODE; 4643 mDeferTouchProcess = (!inFullScreenMode() 4644 && mForwardTouchEvents) ? hitFocusedPlugin( 4645 contentX, contentY) : false; 4646 mWebViewCore.sendMessage( 4647 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4648 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4649 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 4650 (eventTime - mLastTouchUpTime), eventTime); 4651 } 4652 } 4653 // Trigger the link 4654 if (mTouchMode == TOUCH_INIT_MODE 4655 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4656 mPrivateHandler.sendEmptyMessageDelayed( 4657 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 4658 mPrivateHandler.sendEmptyMessageDelayed( 4659 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 4660 if (inFullScreenMode() || mDeferTouchProcess) { 4661 mPreventDefault = PREVENT_DEFAULT_YES; 4662 } else if (mForwardTouchEvents) { 4663 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 4664 } else { 4665 mPreventDefault = PREVENT_DEFAULT_NO; 4666 } 4667 // pass the touch events from UI thread to WebCore thread 4668 if (shouldForwardTouchEvent()) { 4669 TouchEventData ted = new TouchEventData(); 4670 ted.mAction = action; 4671 ted.mX = contentX; 4672 ted.mY = contentY; 4673 ted.mMetaState = ev.getMetaState(); 4674 ted.mReprocess = mDeferTouchProcess; 4675 if (mDeferTouchProcess) { 4676 // still needs to set them for compute deltaX/Y 4677 mLastTouchX = x; 4678 mLastTouchY = y; 4679 ted.mViewX = x; 4680 ted.mViewY = y; 4681 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4682 break; 4683 } 4684 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4685 if (!inFullScreenMode()) { 4686 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4687 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4688 action, 0), TAP_TIMEOUT); 4689 } 4690 } 4691 } 4692 startTouch(x, y, eventTime); 4693 break; 4694 } 4695 case MotionEvent.ACTION_MOVE: { 4696 boolean firstMove = false; 4697 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 4698 >= mTouchSlopSquare) { 4699 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4700 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4701 mConfirmMove = true; 4702 firstMove = true; 4703 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4704 mTouchMode = TOUCH_INIT_MODE; 4705 } 4706 } 4707 // pass the touch events from UI thread to WebCore thread 4708 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 4709 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 4710 mLastSentTouchTime = eventTime; 4711 TouchEventData ted = new TouchEventData(); 4712 ted.mAction = action; 4713 ted.mX = contentX; 4714 ted.mY = contentY; 4715 ted.mMetaState = ev.getMetaState(); 4716 ted.mReprocess = mDeferTouchProcess; 4717 if (mDeferTouchProcess) { 4718 ted.mViewX = x; 4719 ted.mViewY = y; 4720 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4721 break; 4722 } 4723 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4724 if (firstMove && !inFullScreenMode()) { 4725 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4726 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4727 action, 0), TAP_TIMEOUT); 4728 } 4729 } 4730 if (mTouchMode == TOUCH_DONE_MODE 4731 || mPreventDefault == PREVENT_DEFAULT_YES) { 4732 // no dragging during scroll zoom animation, or when prevent 4733 // default is yes 4734 break; 4735 } 4736 if (mVelocityTracker == null) { 4737 Log.e(LOGTAG, "Got null mVelocityTracker when " 4738 + "mPreventDefault = " + mPreventDefault 4739 + " mDeferTouchProcess = " + mDeferTouchProcess 4740 + " mTouchMode = " + mTouchMode); 4741 } 4742 mVelocityTracker.addMovement(ev); 4743 if (mTouchMode != TOUCH_DRAG_MODE) { 4744 if (mTouchMode == TOUCH_SELECT_MODE) { 4745 mSelectX = mScrollX + (int) x; 4746 mSelectY = mScrollY + (int) y; 4747 if (DebugFlags.WEB_VIEW) { 4748 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 4749 } 4750 nativeMoveSelection(contentX, contentY, true); 4751 invalidate(); 4752 break; 4753 } 4754 if (!mConfirmMove) { 4755 break; 4756 } 4757 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 4758 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 4759 // track mLastTouchTime as we may need to do fling at 4760 // ACTION_UP 4761 mLastTouchTime = eventTime; 4762 break; 4763 } 4764 // if it starts nearly horizontal or vertical, enforce it 4765 int ax = Math.abs(deltaX); 4766 int ay = Math.abs(deltaY); 4767 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4768 mSnapScrollMode = SNAP_X; 4769 mSnapPositive = deltaX > 0; 4770 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4771 mSnapScrollMode = SNAP_Y; 4772 mSnapPositive = deltaY > 0; 4773 } 4774 4775 mTouchMode = TOUCH_DRAG_MODE; 4776 mLastTouchX = x; 4777 mLastTouchY = y; 4778 fDeltaX = 0.0f; 4779 fDeltaY = 0.0f; 4780 deltaX = 0; 4781 deltaY = 0; 4782 4783 startDrag(); 4784 } 4785 4786 if (mDragTrackerHandler != null) { 4787 mDragTrackerHandler.dragTo(x, y); 4788 } 4789 4790 // do pan 4791 int newScrollX = pinLocX(mScrollX + deltaX); 4792 int newDeltaX = newScrollX - mScrollX; 4793 if (deltaX != newDeltaX) { 4794 deltaX = newDeltaX; 4795 fDeltaX = (float) newDeltaX; 4796 } 4797 int newScrollY = pinLocY(mScrollY + deltaY); 4798 int newDeltaY = newScrollY - mScrollY; 4799 if (deltaY != newDeltaY) { 4800 deltaY = newDeltaY; 4801 fDeltaY = (float) newDeltaY; 4802 } 4803 boolean done = false; 4804 boolean keepScrollBarsVisible = false; 4805 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 4806 keepScrollBarsVisible = done = true; 4807 } else { 4808 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4809 int ax = Math.abs(deltaX); 4810 int ay = Math.abs(deltaY); 4811 if (mSnapScrollMode == SNAP_X) { 4812 // radical change means getting out of snap mode 4813 if (ay > MAX_SLOPE_FOR_DIAG * ax 4814 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4815 mSnapScrollMode = SNAP_NONE; 4816 } 4817 // reverse direction means lock in the snap mode 4818 if (ax > MAX_SLOPE_FOR_DIAG * ay && 4819 (mSnapPositive 4820 ? deltaX < -mMinLockSnapReverseDistance 4821 : deltaX > mMinLockSnapReverseDistance)) { 4822 mSnapScrollMode |= SNAP_LOCK; 4823 } 4824 } else { 4825 // radical change means getting out of snap mode 4826 if (ax > MAX_SLOPE_FOR_DIAG * ay 4827 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4828 mSnapScrollMode = SNAP_NONE; 4829 } 4830 // reverse direction means lock in the snap mode 4831 if (ay > MAX_SLOPE_FOR_DIAG * ax && 4832 (mSnapPositive 4833 ? deltaY < -mMinLockSnapReverseDistance 4834 : deltaY > mMinLockSnapReverseDistance)) { 4835 mSnapScrollMode |= SNAP_LOCK; 4836 } 4837 } 4838 } 4839 if (mSnapScrollMode != SNAP_NONE) { 4840 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 4841 deltaY = 0; 4842 } else { 4843 deltaX = 0; 4844 } 4845 } 4846 if ((deltaX | deltaY) != 0) { 4847 if (deltaX != 0) { 4848 mLastTouchX = x; 4849 } 4850 if (deltaY != 0) { 4851 mLastTouchY = y; 4852 } 4853 mHeldMotionless = MOTIONLESS_FALSE; 4854 } else { 4855 // keep the scrollbar on the screen even there is no 4856 // scroll 4857 keepScrollBarsVisible = true; 4858 } 4859 mLastTouchTime = eventTime; 4860 mUserScroll = true; 4861 } 4862 4863 doDrag(deltaX, deltaY); 4864 4865 if (keepScrollBarsVisible) { 4866 if (mHeldMotionless != MOTIONLESS_TRUE) { 4867 mHeldMotionless = MOTIONLESS_TRUE; 4868 invalidate(); 4869 } 4870 // keep the scrollbar on the screen even there is no scroll 4871 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 4872 false); 4873 // return false to indicate that we can't pan out of the 4874 // view space 4875 return !done; 4876 } 4877 break; 4878 } 4879 case MotionEvent.ACTION_UP: { 4880 // pass the touch events from UI thread to WebCore thread 4881 if (shouldForwardTouchEvent()) { 4882 TouchEventData ted = new TouchEventData(); 4883 ted.mAction = action; 4884 ted.mX = contentX; 4885 ted.mY = contentY; 4886 ted.mMetaState = ev.getMetaState(); 4887 ted.mReprocess = mDeferTouchProcess; 4888 if (mDeferTouchProcess) { 4889 ted.mViewX = x; 4890 ted.mViewY = y; 4891 } 4892 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4893 } 4894 mLastTouchUpTime = eventTime; 4895 switch (mTouchMode) { 4896 case TOUCH_DOUBLE_TAP_MODE: // double tap 4897 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4898 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4899 if (inFullScreenMode() || mDeferTouchProcess) { 4900 TouchEventData ted = new TouchEventData(); 4901 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 4902 ted.mX = contentX; 4903 ted.mY = contentY; 4904 ted.mMetaState = ev.getMetaState(); 4905 ted.mReprocess = mDeferTouchProcess; 4906 if (mDeferTouchProcess) { 4907 ted.mViewX = x; 4908 ted.mViewY = y; 4909 } 4910 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4911 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 4912 doDoubleTap(); 4913 mTouchMode = TOUCH_DONE_MODE; 4914 } 4915 break; 4916 case TOUCH_SELECT_MODE: 4917 commitCopy(); 4918 mTouchSelection = false; 4919 break; 4920 case TOUCH_INIT_MODE: // tap 4921 case TOUCH_SHORTPRESS_START_MODE: 4922 case TOUCH_SHORTPRESS_MODE: 4923 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4924 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4925 if (mConfirmMove) { 4926 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 4927 " WebCore's response for touch down."); 4928 if (mPreventDefault != PREVENT_DEFAULT_YES 4929 && (computeMaxScrollX() > 0 4930 || computeMaxScrollY() > 0)) { 4931 // UI takes control back, cancel WebCore touch 4932 cancelWebCoreTouchEvent(contentX, contentY, 4933 true); 4934 // we will not rewrite drag code here, but we 4935 // will try fling if it applies. 4936 WebViewCore.reducePriority(); 4937 // to get better performance, pause updating the 4938 // picture 4939 WebViewCore.pauseUpdatePicture(mWebViewCore); 4940 // fall through to TOUCH_DRAG_MODE 4941 } else { 4942 // WebKit may consume the touch event and modify 4943 // DOM. drawContentPicture() will be called with 4944 // animateSroll as true for better performance. 4945 // Force redraw in high-quality. 4946 invalidate(); 4947 break; 4948 } 4949 } else { 4950 if (mTouchMode == TOUCH_INIT_MODE) { 4951 mPrivateHandler.sendEmptyMessageDelayed( 4952 RELEASE_SINGLE_TAP, ViewConfiguration 4953 .getDoubleTapTimeout()); 4954 } else { 4955 doShortPress(); 4956 } 4957 break; 4958 } 4959 case TOUCH_DRAG_MODE: 4960 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4961 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4962 // if the user waits a while w/o moving before the 4963 // up, we don't want to do a fling 4964 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4965 if (mVelocityTracker == null) { 4966 Log.e(LOGTAG, "Got null mVelocityTracker when " 4967 + "mPreventDefault = " 4968 + mPreventDefault 4969 + " mDeferTouchProcess = " 4970 + mDeferTouchProcess); 4971 } 4972 mVelocityTracker.addMovement(ev); 4973 // set to MOTIONLESS_IGNORE so that it won't keep 4974 // removing and sending message in 4975 // drawCoreAndCursorRing() 4976 mHeldMotionless = MOTIONLESS_IGNORE; 4977 doFling(); 4978 break; 4979 } 4980 // redraw in high-quality, as we're done dragging 4981 mHeldMotionless = MOTIONLESS_TRUE; 4982 invalidate(); 4983 // fall through 4984 case TOUCH_DRAG_START_MODE: 4985 // TOUCH_DRAG_START_MODE should not happen for the real 4986 // device as we almost certain will get a MOVE. But this 4987 // is possible on emulator. 4988 mLastVelocity = 0; 4989 WebViewCore.resumePriority(); 4990 WebViewCore.resumeUpdatePicture(mWebViewCore); 4991 break; 4992 } 4993 stopTouch(); 4994 break; 4995 } 4996 case MotionEvent.ACTION_CANCEL: { 4997 if (mTouchMode == TOUCH_DRAG_MODE) { 4998 invalidate(); 4999 } 5000 cancelWebCoreTouchEvent(contentX, contentY, false); 5001 cancelTouch(); 5002 break; 5003 } 5004 } 5005 return true; 5006 } 5007 5008 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5009 if (shouldForwardTouchEvent()) { 5010 if (removeEvents) { 5011 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5012 } 5013 TouchEventData ted = new TouchEventData(); 5014 ted.mX = x; 5015 ted.mY = y; 5016 ted.mAction = MotionEvent.ACTION_CANCEL; 5017 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5018 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5019 } 5020 } 5021 5022 private void startTouch(float x, float y, long eventTime) { 5023 // Remember where the motion event started 5024 mLastTouchX = x; 5025 mLastTouchY = y; 5026 mLastTouchTime = eventTime; 5027 mVelocityTracker = VelocityTracker.obtain(); 5028 mSnapScrollMode = SNAP_NONE; 5029 if (mDragTracker != null) { 5030 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 5031 } 5032 } 5033 5034 private void startDrag() { 5035 WebViewCore.reducePriority(); 5036 // to get better performance, pause updating the picture 5037 WebViewCore.pauseUpdatePicture(mWebViewCore); 5038 if (!mDragFromTextInput) { 5039 nativeHideCursor(); 5040 } 5041 WebSettings settings = getSettings(); 5042 if (settings.supportZoom() 5043 && settings.getBuiltInZoomControls() 5044 && !getZoomButtonsController().isVisible() 5045 && mMinZoomScale < mMaxZoomScale 5046 && (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5047 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF)) { 5048 mZoomButtonsController.setVisible(true); 5049 int count = settings.getDoubleTapToastCount(); 5050 if (mInZoomOverview && count > 0) { 5051 settings.setDoubleTapToastCount(--count); 5052 Toast.makeText(mContext, 5053 com.android.internal.R.string.double_tap_toast, 5054 Toast.LENGTH_LONG).show(); 5055 } 5056 } 5057 } 5058 5059 private void doDrag(int deltaX, int deltaY) { 5060 if ((deltaX | deltaY) != 0) { 5061 scrollBy(deltaX, deltaY); 5062 } 5063 if (!getSettings().getBuiltInZoomControls()) { 5064 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 5065 if (mZoomControls != null && showPlusMinus) { 5066 if (mZoomControls.getVisibility() == View.VISIBLE) { 5067 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5068 } else { 5069 mZoomControls.show(showPlusMinus, false); 5070 } 5071 mPrivateHandler.postDelayed(mZoomControlRunnable, 5072 ZOOM_CONTROLS_TIMEOUT); 5073 } 5074 } 5075 } 5076 5077 private void stopTouch() { 5078 if (mDragTrackerHandler != null) { 5079 mDragTrackerHandler.stopDrag(); 5080 } 5081 // we also use mVelocityTracker == null to tell us that we are 5082 // not "moving around", so we can take the slower/prettier 5083 // mode in the drawing code 5084 if (mVelocityTracker != null) { 5085 mVelocityTracker.recycle(); 5086 mVelocityTracker = null; 5087 } 5088 } 5089 5090 private void cancelTouch() { 5091 if (mDragTrackerHandler != null) { 5092 mDragTrackerHandler.stopDrag(); 5093 } 5094 // we also use mVelocityTracker == null to tell us that we are 5095 // not "moving around", so we can take the slower/prettier 5096 // mode in the drawing code 5097 if (mVelocityTracker != null) { 5098 mVelocityTracker.recycle(); 5099 mVelocityTracker = null; 5100 } 5101 if (mTouchMode == TOUCH_DRAG_MODE) { 5102 WebViewCore.resumePriority(); 5103 WebViewCore.resumeUpdatePicture(mWebViewCore); 5104 } 5105 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5106 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5107 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5108 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5109 mHeldMotionless = MOTIONLESS_TRUE; 5110 mTouchMode = TOUCH_DONE_MODE; 5111 nativeHideCursor(); 5112 } 5113 5114 private long mTrackballFirstTime = 0; 5115 private long mTrackballLastTime = 0; 5116 private float mTrackballRemainsX = 0.0f; 5117 private float mTrackballRemainsY = 0.0f; 5118 private int mTrackballXMove = 0; 5119 private int mTrackballYMove = 0; 5120 private boolean mExtendSelection = false; 5121 private boolean mTouchSelection = false; 5122 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5123 private static final int TRACKBALL_TIMEOUT = 200; 5124 private static final int TRACKBALL_WAIT = 100; 5125 private static final int TRACKBALL_SCALE = 400; 5126 private static final int TRACKBALL_SCROLL_COUNT = 5; 5127 private static final int TRACKBALL_MOVE_COUNT = 10; 5128 private static final int TRACKBALL_MULTIPLIER = 3; 5129 private static final int SELECT_CURSOR_OFFSET = 16; 5130 private int mSelectX = 0; 5131 private int mSelectY = 0; 5132 private boolean mFocusSizeChanged = false; 5133 private boolean mShiftIsPressed = false; 5134 private boolean mTrackballDown = false; 5135 private long mTrackballUpTime = 0; 5136 private long mLastCursorTime = 0; 5137 private Rect mLastCursorBounds; 5138 5139 // Set by default; BrowserActivity clears to interpret trackball data 5140 // directly for movement. Currently, the framework only passes 5141 // arrow key events, not trackball events, from one child to the next 5142 private boolean mMapTrackballToArrowKeys = true; 5143 5144 public void setMapTrackballToArrowKeys(boolean setMap) { 5145 mMapTrackballToArrowKeys = setMap; 5146 } 5147 5148 void resetTrackballTime() { 5149 mTrackballLastTime = 0; 5150 } 5151 5152 @Override 5153 public boolean onTrackballEvent(MotionEvent ev) { 5154 long time = ev.getEventTime(); 5155 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5156 if (ev.getY() > 0) pageDown(true); 5157 if (ev.getY() < 0) pageUp(true); 5158 return true; 5159 } 5160 boolean shiftPressed = mShiftIsPressed && (mNativeClass == 0 5161 || !nativeFocusIsPlugin()); 5162 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5163 if (shiftPressed) { 5164 return true; // discard press if copy in progress 5165 } 5166 mTrackballDown = true; 5167 if (mNativeClass == 0) { 5168 return false; 5169 } 5170 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5171 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5172 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5173 nativeSelectBestAt(mLastCursorBounds); 5174 } 5175 if (DebugFlags.WEB_VIEW) { 5176 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5177 + " time=" + time 5178 + " mLastCursorTime=" + mLastCursorTime); 5179 } 5180 if (isInTouchMode()) requestFocusFromTouch(); 5181 return false; // let common code in onKeyDown at it 5182 } 5183 if (ev.getAction() == MotionEvent.ACTION_UP) { 5184 // LONG_PRESS_CENTER is set in common onKeyDown 5185 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5186 mTrackballDown = false; 5187 mTrackballUpTime = time; 5188 if (shiftPressed) { 5189 if (mExtendSelection) { 5190 commitCopy(); 5191 } else { 5192 mExtendSelection = true; 5193 invalidate(); // draw the i-beam instead of the arrow 5194 } 5195 return true; // discard press if copy in progress 5196 } 5197 if (DebugFlags.WEB_VIEW) { 5198 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5199 + " time=" + time 5200 ); 5201 } 5202 return false; // let common code in onKeyUp at it 5203 } 5204 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 5205 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5206 return false; 5207 } 5208 if (mTrackballDown) { 5209 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5210 return true; // discard move if trackball is down 5211 } 5212 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5213 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5214 return true; 5215 } 5216 // TODO: alternatively we can do panning as touch does 5217 switchOutDrawHistory(); 5218 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5219 if (DebugFlags.WEB_VIEW) { 5220 Log.v(LOGTAG, "onTrackballEvent time=" 5221 + time + " last=" + mTrackballLastTime); 5222 } 5223 mTrackballFirstTime = time; 5224 mTrackballXMove = mTrackballYMove = 0; 5225 } 5226 mTrackballLastTime = time; 5227 if (DebugFlags.WEB_VIEW) { 5228 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5229 } 5230 mTrackballRemainsX += ev.getX(); 5231 mTrackballRemainsY += ev.getY(); 5232 doTrackball(time); 5233 return true; 5234 } 5235 5236 void moveSelection(float xRate, float yRate) { 5237 if (mNativeClass == 0) 5238 return; 5239 int width = getViewWidth(); 5240 int height = getViewHeight(); 5241 mSelectX += xRate; 5242 mSelectY += yRate; 5243 int maxX = width + mScrollX; 5244 int maxY = height + mScrollY; 5245 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5246 , mSelectX)); 5247 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5248 , mSelectY)); 5249 if (DebugFlags.WEB_VIEW) { 5250 Log.v(LOGTAG, "moveSelection" 5251 + " mSelectX=" + mSelectX 5252 + " mSelectY=" + mSelectY 5253 + " mScrollX=" + mScrollX 5254 + " mScrollY=" + mScrollY 5255 + " xRate=" + xRate 5256 + " yRate=" + yRate 5257 ); 5258 } 5259 nativeMoveSelection(viewToContentX(mSelectX), 5260 viewToContentY(mSelectY), mExtendSelection); 5261 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5262 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5263 : 0; 5264 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5265 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5266 : 0; 5267 pinScrollBy(scrollX, scrollY, true, 0); 5268 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5269 requestRectangleOnScreen(select); 5270 invalidate(); 5271 } 5272 5273 private int scaleTrackballX(float xRate, int width) { 5274 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5275 int nextXMove = xMove; 5276 if (xMove > 0) { 5277 if (xMove > mTrackballXMove) { 5278 xMove -= mTrackballXMove; 5279 } 5280 } else if (xMove < mTrackballXMove) { 5281 xMove -= mTrackballXMove; 5282 } 5283 mTrackballXMove = nextXMove; 5284 return xMove; 5285 } 5286 5287 private int scaleTrackballY(float yRate, int height) { 5288 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5289 int nextYMove = yMove; 5290 if (yMove > 0) { 5291 if (yMove > mTrackballYMove) { 5292 yMove -= mTrackballYMove; 5293 } 5294 } else if (yMove < mTrackballYMove) { 5295 yMove -= mTrackballYMove; 5296 } 5297 mTrackballYMove = nextYMove; 5298 return yMove; 5299 } 5300 5301 private int keyCodeToSoundsEffect(int keyCode) { 5302 switch(keyCode) { 5303 case KeyEvent.KEYCODE_DPAD_UP: 5304 return SoundEffectConstants.NAVIGATION_UP; 5305 case KeyEvent.KEYCODE_DPAD_RIGHT: 5306 return SoundEffectConstants.NAVIGATION_RIGHT; 5307 case KeyEvent.KEYCODE_DPAD_DOWN: 5308 return SoundEffectConstants.NAVIGATION_DOWN; 5309 case KeyEvent.KEYCODE_DPAD_LEFT: 5310 return SoundEffectConstants.NAVIGATION_LEFT; 5311 } 5312 throw new IllegalArgumentException("keyCode must be one of " + 5313 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5314 "KEYCODE_DPAD_LEFT}."); 5315 } 5316 5317 private void doTrackball(long time) { 5318 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5319 if (elapsed == 0) { 5320 elapsed = TRACKBALL_TIMEOUT; 5321 } 5322 float xRate = mTrackballRemainsX * 1000 / elapsed; 5323 float yRate = mTrackballRemainsY * 1000 / elapsed; 5324 int viewWidth = getViewWidth(); 5325 int viewHeight = getViewHeight(); 5326 if (mShiftIsPressed && (mNativeClass == 0 || !nativeFocusIsPlugin())) { 5327 moveSelection(scaleTrackballX(xRate, viewWidth), 5328 scaleTrackballY(yRate, viewHeight)); 5329 mTrackballRemainsX = mTrackballRemainsY = 0; 5330 return; 5331 } 5332 float ax = Math.abs(xRate); 5333 float ay = Math.abs(yRate); 5334 float maxA = Math.max(ax, ay); 5335 if (DebugFlags.WEB_VIEW) { 5336 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5337 + " xRate=" + xRate 5338 + " yRate=" + yRate 5339 + " mTrackballRemainsX=" + mTrackballRemainsX 5340 + " mTrackballRemainsY=" + mTrackballRemainsY); 5341 } 5342 int width = mContentWidth - viewWidth; 5343 int height = mContentHeight - viewHeight; 5344 if (width < 0) width = 0; 5345 if (height < 0) height = 0; 5346 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5347 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5348 maxA = Math.max(ax, ay); 5349 int count = Math.max(0, (int) maxA); 5350 int oldScrollX = mScrollX; 5351 int oldScrollY = mScrollY; 5352 if (count > 0) { 5353 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5354 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5355 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5356 KeyEvent.KEYCODE_DPAD_RIGHT; 5357 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5358 if (DebugFlags.WEB_VIEW) { 5359 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5360 + " count=" + count 5361 + " mTrackballRemainsX=" + mTrackballRemainsX 5362 + " mTrackballRemainsY=" + mTrackballRemainsY); 5363 } 5364 if (mNativeClass != 0 && nativeFocusIsPlugin()) { 5365 for (int i = 0; i < count; i++) { 5366 letPluginHandleNavKey(selectKeyCode, time, true); 5367 } 5368 letPluginHandleNavKey(selectKeyCode, time, false); 5369 } else if (navHandledKey(selectKeyCode, count, false, time)) { 5370 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5371 } 5372 mTrackballRemainsX = mTrackballRemainsY = 0; 5373 } 5374 if (count >= TRACKBALL_SCROLL_COUNT) { 5375 int xMove = scaleTrackballX(xRate, width); 5376 int yMove = scaleTrackballY(yRate, height); 5377 if (DebugFlags.WEB_VIEW) { 5378 Log.v(LOGTAG, "doTrackball pinScrollBy" 5379 + " count=" + count 5380 + " xMove=" + xMove + " yMove=" + yMove 5381 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5382 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5383 ); 5384 } 5385 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5386 xMove = 0; 5387 } 5388 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5389 yMove = 0; 5390 } 5391 if (xMove != 0 || yMove != 0) { 5392 pinScrollBy(xMove, yMove, true, 0); 5393 } 5394 mUserScroll = true; 5395 } 5396 } 5397 5398 private int computeMaxScrollX() { 5399 return Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5400 } 5401 5402 private int computeMaxScrollY() { 5403 return Math.max(computeVerticalScrollRange() + getTitleHeight() 5404 - getViewHeightWithTitle(), 0); 5405 } 5406 5407 public void flingScroll(int vx, int vy) { 5408 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 5409 computeMaxScrollY()); 5410 invalidate(); 5411 } 5412 5413 private void doFling() { 5414 if (mVelocityTracker == null) { 5415 return; 5416 } 5417 int maxX = computeMaxScrollX(); 5418 int maxY = computeMaxScrollY(); 5419 5420 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5421 int vx = (int) mVelocityTracker.getXVelocity(); 5422 int vy = (int) mVelocityTracker.getYVelocity(); 5423 5424 if (mSnapScrollMode != SNAP_NONE) { 5425 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5426 vy = 0; 5427 } else { 5428 vx = 0; 5429 } 5430 } 5431 if (true /* EMG release: make our fling more like Maps' */) { 5432 // maps cuts their velocity in half 5433 vx = vx * 3 / 4; 5434 vy = vy * 3 / 4; 5435 } 5436 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5437 WebViewCore.resumePriority(); 5438 WebViewCore.resumeUpdatePicture(mWebViewCore); 5439 return; 5440 } 5441 float currentVelocity = mScroller.getCurrVelocity(); 5442 if (mLastVelocity > 0 && currentVelocity > 0) { 5443 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5444 - Math.atan2(vy, vx))); 5445 final float circle = (float) (Math.PI) * 2.0f; 5446 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5447 vx += currentVelocity * mLastVelX / mLastVelocity; 5448 vy += currentVelocity * mLastVelY / mLastVelocity; 5449 if (DebugFlags.WEB_VIEW) { 5450 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5451 } 5452 } else if (DebugFlags.WEB_VIEW) { 5453 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5454 } 5455 } else if (DebugFlags.WEB_VIEW) { 5456 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5457 + " current=" + currentVelocity 5458 + " vx=" + vx + " vy=" + vy 5459 + " maxX=" + maxX + " maxY=" + maxY 5460 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5461 } 5462 mLastVelX = vx; 5463 mLastVelY = vy; 5464 mLastVelocity = (float) Math.hypot(vx, vy); 5465 5466 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 5467 // TODO: duration is calculated based on velocity, if the range is 5468 // small, the animation will stop before duration is up. We may 5469 // want to calculate how long the animation is going to run to precisely 5470 // resume the webcore update. 5471 final int time = mScroller.getDuration(); 5472 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5473 awakenScrollBars(time); 5474 invalidate(); 5475 } 5476 5477 private boolean zoomWithPreview(float scale, boolean updateTextWrapScale) { 5478 float oldScale = mActualScale; 5479 mInitialScrollX = mScrollX; 5480 mInitialScrollY = mScrollY; 5481 5482 // snap to DEFAULT_SCALE if it is close 5483 if (Math.abs(scale - mDefaultScale) < MINIMUM_SCALE_INCREMENT) { 5484 scale = mDefaultScale; 5485 } 5486 5487 setNewZoomScale(scale, updateTextWrapScale, false); 5488 5489 if (oldScale != mActualScale) { 5490 // use mZoomPickerScale to see zoom preview first 5491 mZoomStart = SystemClock.uptimeMillis(); 5492 mInvInitialZoomScale = 1.0f / oldScale; 5493 mInvFinalZoomScale = 1.0f / mActualScale; 5494 mZoomScale = mActualScale; 5495 WebViewCore.pauseUpdatePicture(mWebViewCore); 5496 invalidate(); 5497 return true; 5498 } else { 5499 return false; 5500 } 5501 } 5502 5503 /** 5504 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5505 * in charge of installing this view to the view hierarchy. This view will 5506 * become visible when the user starts scrolling via touch and fade away if 5507 * the user does not interact with it. 5508 * <p/> 5509 * API version 3 introduces a built-in zoom mechanism that is shown 5510 * automatically by the MapView. This is the preferred approach for 5511 * showing the zoom UI. 5512 * 5513 * @deprecated The built-in zoom mechanism is preferred, see 5514 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5515 */ 5516 @Deprecated 5517 public View getZoomControls() { 5518 if (!getSettings().supportZoom()) { 5519 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5520 return null; 5521 } 5522 if (mZoomControls == null) { 5523 mZoomControls = createZoomControls(); 5524 5525 /* 5526 * need to be set to VISIBLE first so that getMeasuredHeight() in 5527 * {@link #onSizeChanged()} can return the measured value for proper 5528 * layout. 5529 */ 5530 mZoomControls.setVisibility(View.VISIBLE); 5531 mZoomControlRunnable = new Runnable() { 5532 public void run() { 5533 5534 /* Don't dismiss the controls if the user has 5535 * focus on them. Wait and check again later. 5536 */ 5537 if (!mZoomControls.hasFocus()) { 5538 mZoomControls.hide(); 5539 } else { 5540 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5541 mPrivateHandler.postDelayed(mZoomControlRunnable, 5542 ZOOM_CONTROLS_TIMEOUT); 5543 } 5544 } 5545 }; 5546 } 5547 return mZoomControls; 5548 } 5549 5550 private ExtendedZoomControls createZoomControls() { 5551 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 5552 , null); 5553 zoomControls.setOnZoomInClickListener(new OnClickListener() { 5554 public void onClick(View v) { 5555 // reset time out 5556 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5557 mPrivateHandler.postDelayed(mZoomControlRunnable, 5558 ZOOM_CONTROLS_TIMEOUT); 5559 zoomIn(); 5560 } 5561 }); 5562 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 5563 public void onClick(View v) { 5564 // reset time out 5565 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5566 mPrivateHandler.postDelayed(mZoomControlRunnable, 5567 ZOOM_CONTROLS_TIMEOUT); 5568 zoomOut(); 5569 } 5570 }); 5571 return zoomControls; 5572 } 5573 5574 /** 5575 * Gets the {@link ZoomButtonsController} which can be used to add 5576 * additional buttons to the zoom controls window. 5577 * 5578 * @return The instance of {@link ZoomButtonsController} used by this class, 5579 * or null if it is unavailable. 5580 * @hide 5581 */ 5582 public ZoomButtonsController getZoomButtonsController() { 5583 if (mZoomButtonsController == null) { 5584 mZoomButtonsController = new ZoomButtonsController(this); 5585 mZoomButtonsController.setOnZoomListener(mZoomListener); 5586 // ZoomButtonsController positions the buttons at the bottom, but in 5587 // the middle. Change their layout parameters so they appear on the 5588 // right. 5589 View controls = mZoomButtonsController.getZoomControls(); 5590 ViewGroup.LayoutParams params = controls.getLayoutParams(); 5591 if (params instanceof FrameLayout.LayoutParams) { 5592 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) params; 5593 frameParams.gravity = Gravity.RIGHT; 5594 } 5595 } 5596 return mZoomButtonsController; 5597 } 5598 5599 /** 5600 * Perform zoom in in the webview 5601 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 5602 */ 5603 public boolean zoomIn() { 5604 // TODO: alternatively we can disallow this during draw history mode 5605 switchOutDrawHistory(); 5606 mInZoomOverview = false; 5607 // Center zooming to the center of the screen. 5608 mZoomCenterX = getViewWidth() * .5f; 5609 mZoomCenterY = getViewHeight() * .5f; 5610 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5611 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5612 return zoomWithPreview(mActualScale * 1.25f, true); 5613 } 5614 5615 /** 5616 * Perform zoom out in the webview 5617 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 5618 */ 5619 public boolean zoomOut() { 5620 // TODO: alternatively we can disallow this during draw history mode 5621 switchOutDrawHistory(); 5622 // Center zooming to the center of the screen. 5623 mZoomCenterX = getViewWidth() * .5f; 5624 mZoomCenterY = getViewHeight() * .5f; 5625 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5626 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5627 return zoomWithPreview(mActualScale * 0.8f, true); 5628 } 5629 5630 private void updateSelection() { 5631 if (mNativeClass == 0) { 5632 return; 5633 } 5634 // mLastTouchX and mLastTouchY are the point in the current viewport 5635 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5636 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5637 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 5638 contentX + mNavSlop, contentY + mNavSlop); 5639 nativeSelectBestAt(rect); 5640 } 5641 5642 /** 5643 * Scroll the focused text field/area to match the WebTextView 5644 * @param xPercent New x position of the WebTextView from 0 to 1. 5645 * @param y New y position of the WebTextView in view coordinates 5646 */ 5647 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 5648 if (!inEditingMode() || mWebViewCore == null) { 5649 return; 5650 } 5651 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 5652 // Since this position is relative to the top of the text input 5653 // field, we do not need to take the title bar's height into 5654 // consideration. 5655 viewToContentDimension(y), 5656 new Float(xPercent)); 5657 } 5658 5659 /** 5660 * Set our starting point and time for a drag from the WebTextView. 5661 */ 5662 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 5663 if (!inEditingMode()) { 5664 return; 5665 } 5666 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 5667 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 5668 mLastTouchTime = eventTime; 5669 if (!mScroller.isFinished()) { 5670 abortAnimation(); 5671 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5672 } 5673 mSnapScrollMode = SNAP_NONE; 5674 mVelocityTracker = VelocityTracker.obtain(); 5675 mTouchMode = TOUCH_DRAG_START_MODE; 5676 } 5677 5678 /** 5679 * Given a motion event from the WebTextView, set its location to our 5680 * coordinates, and handle the event. 5681 */ 5682 /*package*/ boolean textFieldDrag(MotionEvent event) { 5683 if (!inEditingMode()) { 5684 return false; 5685 } 5686 mDragFromTextInput = true; 5687 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 5688 (float) (mWebTextView.getTop() - mScrollY)); 5689 boolean result = onTouchEvent(event); 5690 mDragFromTextInput = false; 5691 return result; 5692 } 5693 5694 /** 5695 * Due a touch up from a WebTextView. This will be handled by webkit to 5696 * change the selection. 5697 * @param event MotionEvent in the WebTextView's coordinates. 5698 */ 5699 /*package*/ void touchUpOnTextField(MotionEvent event) { 5700 if (!inEditingMode()) { 5701 return; 5702 } 5703 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 5704 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 5705 nativeMotionUp(x, y, mNavSlop); 5706 } 5707 5708 /** 5709 * Called when pressing the center key or trackball on a textfield. 5710 */ 5711 /*package*/ void centerKeyPressOnTextField() { 5712 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 5713 nativeCursorNodePointer()); 5714 } 5715 5716 private void doShortPress() { 5717 if (mNativeClass == 0) { 5718 return; 5719 } 5720 if (mPreventDefault == PREVENT_DEFAULT_YES) { 5721 return; 5722 } 5723 mTouchMode = TOUCH_DONE_MODE; 5724 switchOutDrawHistory(); 5725 // mLastTouchX and mLastTouchY are the point in the current viewport 5726 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5727 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5728 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 5729 WebViewCore.MotionUpData motionUpData = new WebViewCore 5730 .MotionUpData(); 5731 motionUpData.mFrame = nativeCacheHitFramePointer(); 5732 motionUpData.mNode = nativeCacheHitNodePointer(); 5733 motionUpData.mBounds = nativeCacheHitNodeBounds(); 5734 motionUpData.mX = contentX; 5735 motionUpData.mY = contentY; 5736 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 5737 motionUpData); 5738 } else { 5739 doMotionUp(contentX, contentY); 5740 } 5741 } 5742 5743 private void doMotionUp(int contentX, int contentY) { 5744 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 5745 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 5746 } 5747 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 5748 playSoundEffect(SoundEffectConstants.CLICK); 5749 } 5750 } 5751 5752 /* 5753 * Return true if the view (Plugin) is fully visible and maximized inside 5754 * the WebView. 5755 */ 5756 private boolean isPluginFitOnScreen(ViewManager.ChildView view) { 5757 int viewWidth = getViewWidth(); 5758 int viewHeight = getViewHeightWithTitle(); 5759 float scale = Math.min((float) viewWidth / view.width, 5760 (float) viewHeight / view.height); 5761 if (scale < mMinZoomScale) { 5762 scale = mMinZoomScale; 5763 } else if (scale > mMaxZoomScale) { 5764 scale = mMaxZoomScale; 5765 } 5766 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 5767 if (contentToViewX(view.x) >= mScrollX 5768 && contentToViewX(view.x + view.width) <= mScrollX 5769 + viewWidth 5770 && contentToViewY(view.y) >= mScrollY 5771 && contentToViewY(view.y + view.height) <= mScrollY 5772 + viewHeight) { 5773 return true; 5774 } 5775 } 5776 return false; 5777 } 5778 5779 /* 5780 * Maximize and center the rectangle, specified in the document coordinate 5781 * space, inside the WebView. If the zoom doesn't need to be changed, do an 5782 * animated scroll to center it. If the zoom needs to be changed, find the 5783 * zoom center and do a smooth zoom transition. 5784 */ 5785 private void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 5786 int viewWidth = getViewWidth(); 5787 int viewHeight = getViewHeightWithTitle(); 5788 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 5789 / docHeight); 5790 if (scale < mMinZoomScale) { 5791 scale = mMinZoomScale; 5792 } else if (scale > mMaxZoomScale) { 5793 scale = mMaxZoomScale; 5794 } 5795 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 5796 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 5797 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 5798 true, 0); 5799 } else { 5800 float oldScreenX = docX * mActualScale - mScrollX; 5801 float rectViewX = docX * scale; 5802 float rectViewWidth = docWidth * scale; 5803 float newMaxWidth = mContentWidth * scale; 5804 float newScreenX = (viewWidth - rectViewWidth) / 2; 5805 // pin the newX to the WebView 5806 if (newScreenX > rectViewX) { 5807 newScreenX = rectViewX; 5808 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 5809 newScreenX = viewWidth - (newMaxWidth - rectViewX); 5810 } 5811 mZoomCenterX = (oldScreenX * scale - newScreenX * mActualScale) 5812 / (scale - mActualScale); 5813 float oldScreenY = docY * mActualScale + getTitleHeight() 5814 - mScrollY; 5815 float rectViewY = docY * scale + getTitleHeight(); 5816 float rectViewHeight = docHeight * scale; 5817 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 5818 float newScreenY = (viewHeight - rectViewHeight) / 2; 5819 // pin the newY to the WebView 5820 if (newScreenY > rectViewY) { 5821 newScreenY = rectViewY; 5822 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 5823 newScreenY = viewHeight - (newMaxHeight - rectViewY); 5824 } 5825 mZoomCenterY = (oldScreenY * scale - newScreenY * mActualScale) 5826 / (scale - mActualScale); 5827 zoomWithPreview(scale, false); 5828 } 5829 } 5830 5831 void dismissZoomControl() { 5832 if (mWebViewCore == null) { 5833 // maybe called after WebView's destroy(). As we can't get settings, 5834 // just hide zoom control for both styles. 5835 if (mZoomButtonsController != null) { 5836 mZoomButtonsController.setVisible(false); 5837 } 5838 if (mZoomControls != null) { 5839 mZoomControls.hide(); 5840 } 5841 return; 5842 } 5843 WebSettings settings = getSettings(); 5844 if (settings.getBuiltInZoomControls()) { 5845 if (getZoomButtonsController().isVisible()) { 5846 mZoomButtonsController.setVisible(false); 5847 } 5848 } else { 5849 if (mZoomControlRunnable != null) { 5850 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5851 } 5852 if (mZoomControls != null) { 5853 mZoomControls.hide(); 5854 } 5855 } 5856 } 5857 5858 // Rule for double tap: 5859 // 1. if the current scale is not same as the text wrap scale and layout 5860 // algorithm is NARROW_COLUMNS, fit to column; 5861 // 2. if the current state is not overview mode, change to overview mode; 5862 // 3. if the current state is overview mode, change to default scale. 5863 private void doDoubleTap() { 5864 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 5865 return; 5866 } 5867 mZoomCenterX = mLastTouchX; 5868 mZoomCenterY = mLastTouchY; 5869 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5870 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5871 WebSettings settings = getSettings(); 5872 settings.setDoubleTapToastCount(0); 5873 // remove the zoom control after double tap 5874 dismissZoomControl(); 5875 ViewManager.ChildView plugin = mViewManager.hitTest(mAnchorX, mAnchorY); 5876 if (plugin != null) { 5877 if (isPluginFitOnScreen(plugin)) { 5878 mInZoomOverview = true; 5879 // Force the titlebar fully reveal in overview mode 5880 if (mScrollY < getTitleHeight()) mScrollY = 0; 5881 zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth, 5882 true); 5883 } else { 5884 mInZoomOverview = false; 5885 centerFitRect(plugin.x, plugin.y, plugin.width, plugin.height); 5886 } 5887 return; 5888 } 5889 boolean zoomToDefault = false; 5890 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 5891 && (Math.abs(mActualScale - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT)) { 5892 setNewZoomScale(mActualScale, true, true); 5893 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 5894 if (Math.abs(mActualScale - overviewScale) < MINIMUM_SCALE_INCREMENT) { 5895 mInZoomOverview = true; 5896 } 5897 } else if (!mInZoomOverview) { 5898 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 5899 if (Math.abs(mActualScale - newScale) >= MINIMUM_SCALE_INCREMENT) { 5900 mInZoomOverview = true; 5901 // Force the titlebar fully reveal in overview mode 5902 if (mScrollY < getTitleHeight()) mScrollY = 0; 5903 zoomWithPreview(newScale, true); 5904 } else if (Math.abs(mActualScale - mDefaultScale) >= MINIMUM_SCALE_INCREMENT) { 5905 zoomToDefault = true; 5906 } 5907 } else { 5908 zoomToDefault = true; 5909 } 5910 if (zoomToDefault) { 5911 mInZoomOverview = false; 5912 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 5913 if (left != NO_LEFTEDGE) { 5914 // add a 5pt padding to the left edge. 5915 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 5916 - mScrollX; 5917 // Re-calculate the zoom center so that the new scroll x will be 5918 // on the left edge. 5919 if (viewLeft > 0) { 5920 mZoomCenterX = viewLeft * mDefaultScale 5921 / (mDefaultScale - mActualScale); 5922 } else { 5923 scrollBy(viewLeft, 0); 5924 mZoomCenterX = 0; 5925 } 5926 } 5927 zoomWithPreview(mDefaultScale, true); 5928 } 5929 } 5930 5931 // Called by JNI to handle a touch on a node representing an email address, 5932 // address, or phone number 5933 private void overrideLoading(String url) { 5934 mCallbackProxy.uiOverrideUrlLoading(url); 5935 } 5936 5937 @Override 5938 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 5939 boolean result = false; 5940 if (inEditingMode()) { 5941 result = mWebTextView.requestFocus(direction, 5942 previouslyFocusedRect); 5943 } else { 5944 result = super.requestFocus(direction, previouslyFocusedRect); 5945 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 5946 // For cases such as GMail, where we gain focus from a direction, 5947 // we want to move to the first available link. 5948 // FIXME: If there are no visible links, we may not want to 5949 int fakeKeyDirection = 0; 5950 switch(direction) { 5951 case View.FOCUS_UP: 5952 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 5953 break; 5954 case View.FOCUS_DOWN: 5955 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 5956 break; 5957 case View.FOCUS_LEFT: 5958 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 5959 break; 5960 case View.FOCUS_RIGHT: 5961 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 5962 break; 5963 default: 5964 return result; 5965 } 5966 if (mNativeClass != 0 && !nativeHasCursorNode()) { 5967 navHandledKey(fakeKeyDirection, 1, true, 0); 5968 } 5969 } 5970 } 5971 return result; 5972 } 5973 5974 @Override 5975 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5976 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 5977 5978 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5979 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5980 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5981 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5982 5983 int measuredHeight = heightSize; 5984 int measuredWidth = widthSize; 5985 5986 // Grab the content size from WebViewCore. 5987 int contentHeight = contentToViewDimension(mContentHeight); 5988 int contentWidth = contentToViewDimension(mContentWidth); 5989 5990// Log.d(LOGTAG, "------- measure " + heightMode); 5991 5992 if (heightMode != MeasureSpec.EXACTLY) { 5993 mHeightCanMeasure = true; 5994 measuredHeight = contentHeight; 5995 if (heightMode == MeasureSpec.AT_MOST) { 5996 // If we are larger than the AT_MOST height, then our height can 5997 // no longer be measured and we should scroll internally. 5998 if (measuredHeight > heightSize) { 5999 measuredHeight = heightSize; 6000 mHeightCanMeasure = false; 6001 } 6002 } 6003 } else { 6004 mHeightCanMeasure = false; 6005 } 6006 if (mNativeClass != 0) { 6007 nativeSetHeightCanMeasure(mHeightCanMeasure); 6008 } 6009 // For the width, always use the given size unless unspecified. 6010 if (widthMode == MeasureSpec.UNSPECIFIED) { 6011 mWidthCanMeasure = true; 6012 measuredWidth = contentWidth; 6013 } else { 6014 mWidthCanMeasure = false; 6015 } 6016 6017 synchronized (this) { 6018 setMeasuredDimension(measuredWidth, measuredHeight); 6019 } 6020 } 6021 6022 @Override 6023 public boolean requestChildRectangleOnScreen(View child, 6024 Rect rect, 6025 boolean immediate) { 6026 rect.offset(child.getLeft() - child.getScrollX(), 6027 child.getTop() - child.getScrollY()); 6028 6029 Rect content = new Rect(viewToContentX(mScrollX), 6030 viewToContentY(mScrollY), 6031 viewToContentX(mScrollX + getWidth() 6032 - getVerticalScrollbarWidth()), 6033 viewToContentY(mScrollY + getViewHeightWithTitle())); 6034 content = nativeSubtractLayers(content); 6035 int screenTop = contentToViewY(content.top); 6036 int screenBottom = contentToViewY(content.bottom); 6037 int height = screenBottom - screenTop; 6038 int scrollYDelta = 0; 6039 6040 if (rect.bottom > screenBottom) { 6041 int oneThirdOfScreenHeight = height / 3; 6042 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6043 // If the rectangle is too tall to fit in the bottom two thirds 6044 // of the screen, place it at the top. 6045 scrollYDelta = rect.top - screenTop; 6046 } else { 6047 // If the rectangle will still fit on screen, we want its 6048 // top to be in the top third of the screen. 6049 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6050 } 6051 } else if (rect.top < screenTop) { 6052 scrollYDelta = rect.top - screenTop; 6053 } 6054 6055 int screenLeft = contentToViewX(content.left); 6056 int screenRight = contentToViewX(content.right); 6057 int width = screenRight - screenLeft; 6058 int scrollXDelta = 0; 6059 6060 if (rect.right > screenRight && rect.left > screenLeft) { 6061 if (rect.width() > width) { 6062 scrollXDelta += (rect.left - screenLeft); 6063 } else { 6064 scrollXDelta += (rect.right - screenRight); 6065 } 6066 } else if (rect.left < screenLeft) { 6067 scrollXDelta -= (screenLeft - rect.left); 6068 } 6069 6070 if ((scrollYDelta | scrollXDelta) != 0) { 6071 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6072 } 6073 6074 return false; 6075 } 6076 6077 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6078 String replace, int newStart, int newEnd) { 6079 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6080 arg.mReplace = replace; 6081 arg.mNewStart = newStart; 6082 arg.mNewEnd = newEnd; 6083 mTextGeneration++; 6084 arg.mTextGeneration = mTextGeneration; 6085 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6086 } 6087 6088 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6089 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6090 arg.mEvent = event; 6091 arg.mCurrentText = currentText; 6092 // Increase our text generation number, and pass it to webcore thread 6093 mTextGeneration++; 6094 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6095 // WebKit's document state is not saved until about to leave the page. 6096 // To make sure the host application, like Browser, has the up to date 6097 // document state when it goes to background, we force to save the 6098 // document state. 6099 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6100 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6101 cursorData(), 1000); 6102 } 6103 6104 /* package */ synchronized WebViewCore getWebViewCore() { 6105 return mWebViewCore; 6106 } 6107 6108 //------------------------------------------------------------------------- 6109 // Methods can be called from a separate thread, like WebViewCore 6110 // If it needs to call the View system, it has to send message. 6111 //------------------------------------------------------------------------- 6112 6113 /** 6114 * General handler to receive message coming from webkit thread 6115 */ 6116 class PrivateHandler extends Handler { 6117 @Override 6118 public void handleMessage(Message msg) { 6119 // exclude INVAL_RECT_MSG_ID since it is frequently output 6120 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6121 if (msg.what >= FIRST_PRIVATE_MSG_ID 6122 && msg.what <= LAST_PRIVATE_MSG_ID) { 6123 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6124 - FIRST_PRIVATE_MSG_ID]); 6125 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6126 && msg.what <= LAST_PACKAGE_MSG_ID) { 6127 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6128 - FIRST_PACKAGE_MSG_ID]); 6129 } else { 6130 Log.v(LOGTAG, Integer.toString(msg.what)); 6131 } 6132 } 6133 if (mWebViewCore == null) { 6134 // after WebView's destroy() is called, skip handling messages. 6135 return; 6136 } 6137 switch (msg.what) { 6138 case REMEMBER_PASSWORD: { 6139 mDatabase.setUsernamePassword( 6140 msg.getData().getString("host"), 6141 msg.getData().getString("username"), 6142 msg.getData().getString("password")); 6143 ((Message) msg.obj).sendToTarget(); 6144 break; 6145 } 6146 case NEVER_REMEMBER_PASSWORD: { 6147 mDatabase.setUsernamePassword( 6148 msg.getData().getString("host"), null, null); 6149 ((Message) msg.obj).sendToTarget(); 6150 break; 6151 } 6152 case PREVENT_DEFAULT_TIMEOUT: { 6153 // if timeout happens, cancel it so that it won't block UI 6154 // to continue handling touch events 6155 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6156 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6157 || (msg.arg1 == MotionEvent.ACTION_MOVE 6158 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6159 cancelWebCoreTouchEvent( 6160 viewToContentX((int) mLastTouchX + mScrollX), 6161 viewToContentY((int) mLastTouchY + mScrollY), 6162 true); 6163 } 6164 break; 6165 } 6166 case SWITCH_TO_SHORTPRESS: { 6167 if (mTouchMode == TOUCH_INIT_MODE) { 6168 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6169 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6170 updateSelection(); 6171 } else { 6172 // set to TOUCH_SHORTPRESS_MODE so that it won't 6173 // trigger double tap any more 6174 mTouchMode = TOUCH_SHORTPRESS_MODE; 6175 } 6176 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6177 mTouchMode = TOUCH_DONE_MODE; 6178 } 6179 break; 6180 } 6181 case SWITCH_TO_LONGPRESS: { 6182 if (inFullScreenMode() || mDeferTouchProcess) { 6183 TouchEventData ted = new TouchEventData(); 6184 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6185 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 6186 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 6187 // metaState for long press is tricky. Should it be the 6188 // state when the press started or when the press was 6189 // released? Or some intermediary key state? For 6190 // simplicity for now, we don't set it. 6191 ted.mMetaState = 0; 6192 ted.mReprocess = mDeferTouchProcess; 6193 if (mDeferTouchProcess) { 6194 ted.mViewX = mLastTouchX; 6195 ted.mViewY = mLastTouchY; 6196 } 6197 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6198 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6199 mTouchMode = TOUCH_DONE_MODE; 6200 performLongClick(); 6201 rebuildWebTextView(); 6202 } 6203 break; 6204 } 6205 case RELEASE_SINGLE_TAP: { 6206 doShortPress(); 6207 break; 6208 } 6209 case SCROLL_BY_MSG_ID: 6210 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6211 break; 6212 case SYNC_SCROLL_TO_MSG_ID: 6213 if (mUserScroll) { 6214 // if user has scrolled explicitly, don't sync the 6215 // scroll position any more 6216 mUserScroll = false; 6217 break; 6218 } 6219 // fall through 6220 case SCROLL_TO_MSG_ID: 6221 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6222 // if we can't scroll to the exact position due to pin, 6223 // send a message to WebCore to re-scroll when we get a 6224 // new picture 6225 mUserScroll = false; 6226 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6227 msg.arg1, msg.arg2); 6228 } 6229 break; 6230 case SPAWN_SCROLL_TO_MSG_ID: 6231 spawnContentScrollTo(msg.arg1, msg.arg2); 6232 break; 6233 case UPDATE_ZOOM_RANGE: { 6234 WebViewCore.RestoreState restoreState 6235 = (WebViewCore.RestoreState) msg.obj; 6236 // mScrollX contains the new minPrefWidth 6237 updateZoomRange(restoreState, getViewWidth(), 6238 restoreState.mScrollX, false); 6239 break; 6240 } 6241 case NEW_PICTURE_MSG_ID: { 6242 // If we've previously delayed deleting a root 6243 // layer, do it now. 6244 if (mDelayedDeleteRootLayer) { 6245 mDelayedDeleteRootLayer = false; 6246 nativeSetRootLayer(0); 6247 } 6248 WebSettings settings = mWebViewCore.getSettings(); 6249 // called for new content 6250 final int viewWidth = getViewWidth(); 6251 final WebViewCore.DrawData draw = 6252 (WebViewCore.DrawData) msg.obj; 6253 final Point viewSize = draw.mViewPoint; 6254 boolean useWideViewport = settings.getUseWideViewPort(); 6255 WebViewCore.RestoreState restoreState = draw.mRestoreState; 6256 boolean hasRestoreState = restoreState != null; 6257 if (hasRestoreState) { 6258 updateZoomRange(restoreState, viewSize.x, 6259 draw.mMinPrefWidth, true); 6260 if (!mDrawHistory) { 6261 mInZoomOverview = false; 6262 6263 if (mInitialScaleInPercent > 0) { 6264 setNewZoomScale(mInitialScaleInPercent / 100.0f, 6265 mInitialScaleInPercent != mTextWrapScale * 100, 6266 false); 6267 } else if (restoreState.mViewScale > 0) { 6268 mTextWrapScale = restoreState.mTextWrapScale; 6269 setNewZoomScale(restoreState.mViewScale, false, 6270 false); 6271 } else { 6272 mInZoomOverview = useWideViewport 6273 && settings.getLoadWithOverviewMode(); 6274 float scale; 6275 if (mInZoomOverview) { 6276 scale = (float) viewWidth 6277 / DEFAULT_VIEWPORT_WIDTH; 6278 } else { 6279 scale = restoreState.mTextWrapScale; 6280 } 6281 setNewZoomScale(scale, Math.abs(scale 6282 - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT, 6283 false); 6284 } 6285 setContentScrollTo(restoreState.mScrollX, 6286 restoreState.mScrollY); 6287 // As we are on a new page, remove the WebTextView. This 6288 // is necessary for page loads driven by webkit, and in 6289 // particular when the user was on a password field, so 6290 // the WebTextView was visible. 6291 clearTextEntry(false); 6292 // update the zoom buttons as the scale can be changed 6293 if (getSettings().getBuiltInZoomControls()) { 6294 updateZoomButtonsEnabled(); 6295 } 6296 } 6297 } 6298 // We update the layout (i.e. request a layout from the 6299 // view system) if the last view size that we sent to 6300 // WebCore matches the view size of the picture we just 6301 // received in the fixed dimension. 6302 final boolean updateLayout = viewSize.x == mLastWidthSent 6303 && viewSize.y == mLastHeightSent; 6304 recordNewContentSize(draw.mWidthHeight.x, 6305 draw.mWidthHeight.y 6306 + (mFindIsUp ? mFindHeight : 0), updateLayout); 6307 if (DebugFlags.WEB_VIEW) { 6308 Rect b = draw.mInvalRegion.getBounds(); 6309 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6310 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6311 } 6312 invalidateContentRect(draw.mInvalRegion.getBounds()); 6313 if (mPictureListener != null) { 6314 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6315 } 6316 if (useWideViewport) { 6317 // limit mZoomOverviewWidth upper bound to 6318 // sMaxViewportWidth so that if the page doesn't behave 6319 // well, the WebView won't go insane. limit the lower 6320 // bound to match the default scale for mobile sites. 6321 mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math 6322 .max((int) (viewWidth / mDefaultScale), Math 6323 .max(draw.mMinPrefWidth, 6324 draw.mViewPoint.x))); 6325 } 6326 if (!mMinZoomScaleFixed) { 6327 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 6328 } 6329 if (!mDrawHistory && mInZoomOverview) { 6330 // fit the content width to the current view. Ignore 6331 // the rounding error case. 6332 if (Math.abs((viewWidth * mInvActualScale) 6333 - mZoomOverviewWidth) > 1) { 6334 setNewZoomScale((float) viewWidth 6335 / mZoomOverviewWidth, Math.abs(mActualScale 6336 - mTextWrapScale) < MINIMUM_SCALE_INCREMENT, 6337 false); 6338 } 6339 } 6340 if (draw.mFocusSizeChanged && inEditingMode()) { 6341 mFocusSizeChanged = true; 6342 } 6343 if (hasRestoreState) { 6344 mViewManager.postReadyToDrawAll(); 6345 } 6346 break; 6347 } 6348 case WEBCORE_INITIALIZED_MSG_ID: 6349 // nativeCreate sets mNativeClass to a non-zero value 6350 nativeCreate(msg.arg1); 6351 break; 6352 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6353 // Make sure that the textfield is currently focused 6354 // and representing the same node as the pointer. 6355 if (inEditingMode() && 6356 mWebTextView.isSameTextField(msg.arg1)) { 6357 if (msg.getData().getBoolean("password")) { 6358 Spannable text = (Spannable) mWebTextView.getText(); 6359 int start = Selection.getSelectionStart(text); 6360 int end = Selection.getSelectionEnd(text); 6361 mWebTextView.setInPassword(true); 6362 // Restore the selection, which may have been 6363 // ruined by setInPassword. 6364 Spannable pword = 6365 (Spannable) mWebTextView.getText(); 6366 Selection.setSelection(pword, start, end); 6367 // If the text entry has created more events, ignore 6368 // this one. 6369 } else if (msg.arg2 == mTextGeneration) { 6370 mWebTextView.setTextAndKeepSelection( 6371 (String) msg.obj); 6372 } 6373 } 6374 break; 6375 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 6376 displaySoftKeyboard(true); 6377 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6378 (WebViewCore.TextSelectionData) msg.obj); 6379 break; 6380 case UPDATE_TEXT_SELECTION_MSG_ID: 6381 // If no textfield was in focus, and the user touched one, 6382 // causing it to send this message, then WebTextView has not 6383 // been set up yet. Rebuild it so it can set its selection. 6384 rebuildWebTextView(); 6385 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6386 (WebViewCore.TextSelectionData) msg.obj); 6387 break; 6388 case RETURN_LABEL: 6389 if (inEditingMode() 6390 && mWebTextView.isSameTextField(msg.arg1)) { 6391 mWebTextView.setHint((String) msg.obj); 6392 InputMethodManager imm 6393 = InputMethodManager.peekInstance(); 6394 // The hint is propagated to the IME in 6395 // onCreateInputConnection. If the IME is already 6396 // active, restart it so that its hint text is updated. 6397 if (imm != null && imm.isActive(mWebTextView)) { 6398 imm.restartInput(mWebTextView); 6399 } 6400 } 6401 break; 6402 case MOVE_OUT_OF_PLUGIN: 6403 navHandledKey(msg.arg1, 1, false, 0); 6404 break; 6405 case UPDATE_TEXT_ENTRY_MSG_ID: 6406 // this is sent after finishing resize in WebViewCore. Make 6407 // sure the text edit box is still on the screen. 6408 if (inEditingMode() && nativeCursorIsTextInput()) { 6409 mWebTextView.bringIntoView(); 6410 rebuildWebTextView(); 6411 } 6412 break; 6413 case CLEAR_TEXT_ENTRY: 6414 clearTextEntry(false); 6415 break; 6416 case INVAL_RECT_MSG_ID: { 6417 Rect r = (Rect)msg.obj; 6418 if (r == null) { 6419 invalidate(); 6420 } else { 6421 // we need to scale r from content into view coords, 6422 // which viewInvalidate() does for us 6423 viewInvalidate(r.left, r.top, r.right, r.bottom); 6424 } 6425 break; 6426 } 6427 case IMMEDIATE_REPAINT_MSG_ID: { 6428 invalidate(); 6429 break; 6430 } 6431 case SET_ROOT_LAYER_MSG_ID: { 6432 if (0 == msg.arg1) { 6433 // Null indicates deleting the old layer, but 6434 // don't actually do so until we've got the 6435 // new page to display. 6436 mDelayedDeleteRootLayer = true; 6437 } else { 6438 mDelayedDeleteRootLayer = false; 6439 nativeSetRootLayer(msg.arg1); 6440 invalidate(); 6441 } 6442 break; 6443 } 6444 case REQUEST_FORM_DATA: 6445 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6446 if (mWebTextView.isSameTextField(msg.arg1)) { 6447 mWebTextView.setAdapterCustom(adapter); 6448 } 6449 break; 6450 case RESUME_WEBCORE_PRIORITY: 6451 WebViewCore.resumePriority(); 6452 WebViewCore.resumeUpdatePicture(mWebViewCore); 6453 break; 6454 6455 case LONG_PRESS_CENTER: 6456 // as this is shared by keydown and trackballdown, reset all 6457 // the states 6458 mGotCenterDown = false; 6459 mTrackballDown = false; 6460 performLongClick(); 6461 break; 6462 6463 case WEBCORE_NEED_TOUCH_EVENTS: 6464 mForwardTouchEvents = (msg.arg1 != 0); 6465 break; 6466 6467 case PREVENT_TOUCH_ID: 6468 if (inFullScreenMode()) { 6469 break; 6470 } 6471 if (msg.obj == null) { 6472 if (msg.arg1 == MotionEvent.ACTION_DOWN 6473 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 6474 // if prevent default is called from WebCore, UI 6475 // will not handle the rest of the touch events any 6476 // more. 6477 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6478 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 6479 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 6480 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6481 // the return for the first ACTION_MOVE will decide 6482 // whether UI will handle touch or not. Currently no 6483 // support for alternating prevent default 6484 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6485 : PREVENT_DEFAULT_NO; 6486 } 6487 } else if (msg.arg2 == 0) { 6488 // prevent default is not called in WebCore, so the 6489 // message needs to be reprocessed in UI 6490 TouchEventData ted = (TouchEventData) msg.obj; 6491 switch (ted.mAction) { 6492 case MotionEvent.ACTION_DOWN: 6493 mLastDeferTouchX = ted.mViewX; 6494 mLastDeferTouchY = ted.mViewY; 6495 mDeferTouchMode = TOUCH_INIT_MODE; 6496 break; 6497 case MotionEvent.ACTION_MOVE: { 6498 // no snapping in defer process 6499 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 6500 mDeferTouchMode = TOUCH_DRAG_MODE; 6501 mLastDeferTouchX = ted.mViewX; 6502 mLastDeferTouchY = ted.mViewY; 6503 startDrag(); 6504 } 6505 int deltaX = pinLocX((int) (mScrollX 6506 + mLastDeferTouchX - ted.mViewX)) 6507 - mScrollX; 6508 int deltaY = pinLocY((int) (mScrollY 6509 + mLastDeferTouchY - ted.mViewY)) 6510 - mScrollY; 6511 doDrag(deltaX, deltaY); 6512 if (deltaX != 0) mLastDeferTouchX = ted.mViewX; 6513 if (deltaY != 0) mLastDeferTouchY = ted.mViewY; 6514 break; 6515 } 6516 case MotionEvent.ACTION_UP: 6517 case MotionEvent.ACTION_CANCEL: 6518 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 6519 // no fling in defer process 6520 WebViewCore.resumePriority(); 6521 WebViewCore.resumeUpdatePicture(mWebViewCore); 6522 } 6523 mDeferTouchMode = TOUCH_DONE_MODE; 6524 break; 6525 case WebViewCore.ACTION_DOUBLETAP: 6526 // doDoubleTap() needs mLastTouchX/Y as anchor 6527 mLastTouchX = ted.mViewX; 6528 mLastTouchY = ted.mViewY; 6529 doDoubleTap(); 6530 mDeferTouchMode = TOUCH_DONE_MODE; 6531 break; 6532 case WebViewCore.ACTION_LONGPRESS: 6533 HitTestResult hitTest = getHitTestResult(); 6534 if (hitTest != null && hitTest.mType 6535 != HitTestResult.UNKNOWN_TYPE) { 6536 performLongClick(); 6537 rebuildWebTextView(); 6538 } 6539 mDeferTouchMode = TOUCH_DONE_MODE; 6540 break; 6541 } 6542 } 6543 break; 6544 6545 case REQUEST_KEYBOARD: 6546 if (msg.arg1 == 0) { 6547 hideSoftKeyboard(); 6548 } else { 6549 displaySoftKeyboard(false); 6550 } 6551 break; 6552 6553 case FIND_AGAIN: 6554 // Ignore if find has been dismissed. 6555 if (mFindIsUp) { 6556 findAll(mLastFind); 6557 } 6558 break; 6559 6560 case DRAG_HELD_MOTIONLESS: 6561 mHeldMotionless = MOTIONLESS_TRUE; 6562 invalidate(); 6563 // fall through to keep scrollbars awake 6564 6565 case AWAKEN_SCROLL_BARS: 6566 if (mTouchMode == TOUCH_DRAG_MODE 6567 && mHeldMotionless == MOTIONLESS_TRUE) { 6568 awakenScrollBars(ViewConfiguration 6569 .getScrollDefaultDelay(), false); 6570 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6571 .obtainMessage(AWAKEN_SCROLL_BARS), 6572 ViewConfiguration.getScrollDefaultDelay()); 6573 } 6574 break; 6575 6576 case DO_MOTION_UP: 6577 doMotionUp(msg.arg1, msg.arg2); 6578 break; 6579 6580 case SHOW_FULLSCREEN: { 6581 View view = (View) msg.obj; 6582 int npp = msg.arg1; 6583 6584 if (mFullScreenHolder != null) { 6585 Log.w(LOGTAG, "Should not have another full screen."); 6586 mFullScreenHolder.dismiss(); 6587 } 6588 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 6589 mFullScreenHolder.setContentView(view); 6590 mFullScreenHolder.setCancelable(false); 6591 mFullScreenHolder.setCanceledOnTouchOutside(false); 6592 mFullScreenHolder.show(); 6593 6594 break; 6595 } 6596 case HIDE_FULLSCREEN: 6597 if (inFullScreenMode()) { 6598 mFullScreenHolder.dismiss(); 6599 mFullScreenHolder = null; 6600 } 6601 break; 6602 6603 case DOM_FOCUS_CHANGED: 6604 if (inEditingMode()) { 6605 nativeClearCursor(); 6606 rebuildWebTextView(); 6607 } 6608 break; 6609 6610 case SHOW_RECT_MSG_ID: { 6611 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6612 int x = mScrollX; 6613 int left = contentToViewX(data.mLeft); 6614 int width = contentToViewDimension(data.mWidth); 6615 int maxWidth = contentToViewDimension(data.mContentWidth); 6616 int viewWidth = getViewWidth(); 6617 if (width < viewWidth) { 6618 // center align 6619 x += left + width / 2 - mScrollX - viewWidth / 2; 6620 } else { 6621 x += (int) (left + data.mXPercentInDoc * width 6622 - mScrollX - data.mXPercentInView * viewWidth); 6623 } 6624 if (DebugFlags.WEB_VIEW) { 6625 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6626 width + ",maxWidth=" + maxWidth + 6627 ",viewWidth=" + viewWidth + ",x=" 6628 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6629 ",xPercentInView=" + data.mXPercentInView+ ")"); 6630 } 6631 // use the passing content width to cap x as the current 6632 // mContentWidth may not be updated yet 6633 x = Math.max(0, 6634 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6635 int top = contentToViewY(data.mTop); 6636 int height = contentToViewDimension(data.mHeight); 6637 int maxHeight = contentToViewDimension(data.mContentHeight); 6638 int viewHeight = getViewHeight(); 6639 int y = (int) (top + data.mYPercentInDoc * height - 6640 data.mYPercentInView * viewHeight); 6641 if (DebugFlags.WEB_VIEW) { 6642 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6643 height + ",maxHeight=" + maxHeight + 6644 ",viewHeight=" + viewHeight + ",y=" 6645 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6646 ",yPercentInView=" + data.mYPercentInView+ ")"); 6647 } 6648 // use the passing content height to cap y as the current 6649 // mContentHeight may not be updated yet 6650 y = Math.max(0, 6651 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6652 // We need to take into account the visible title height 6653 // when scrolling since y is an absolute view position. 6654 y = Math.max(0, y - getVisibleTitleHeight()); 6655 scrollTo(x, y); 6656 } 6657 break; 6658 6659 case CENTER_FIT_RECT: 6660 Rect r = (Rect)msg.obj; 6661 mInZoomOverview = false; 6662 centerFitRect(r.left, r.top, r.width(), r.height()); 6663 break; 6664 6665 case SET_SCROLLBAR_MODES: 6666 mHorizontalScrollBarMode = msg.arg1; 6667 mVerticalScrollBarMode = msg.arg2; 6668 break; 6669 6670 default: 6671 super.handleMessage(msg); 6672 break; 6673 } 6674 } 6675 } 6676 6677 /** 6678 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 6679 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 6680 */ 6681 private void updateTextSelectionFromMessage(int nodePointer, 6682 int textGeneration, WebViewCore.TextSelectionData data) { 6683 if (inEditingMode() 6684 && mWebTextView.isSameTextField(nodePointer) 6685 && textGeneration == mTextGeneration) { 6686 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 6687 } 6688 } 6689 6690 // Class used to use a dropdown for a <select> element 6691 private class InvokeListBox implements Runnable { 6692 // Whether the listbox allows multiple selection. 6693 private boolean mMultiple; 6694 // Passed in to a list with multiple selection to tell 6695 // which items are selected. 6696 private int[] mSelectedArray; 6697 // Passed in to a list with single selection to tell 6698 // where the initial selection is. 6699 private int mSelection; 6700 6701 private Container[] mContainers; 6702 6703 // Need these to provide stable ids to my ArrayAdapter, 6704 // which normally does not have stable ids. (Bug 1250098) 6705 private class Container extends Object { 6706 /** 6707 * Possible values for mEnabled. Keep in sync with OptionStatus in 6708 * WebViewCore.cpp 6709 */ 6710 final static int OPTGROUP = -1; 6711 final static int OPTION_DISABLED = 0; 6712 final static int OPTION_ENABLED = 1; 6713 6714 String mString; 6715 int mEnabled; 6716 int mId; 6717 6718 public String toString() { 6719 return mString; 6720 } 6721 } 6722 6723 /** 6724 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6725 * and allow filtering. 6726 */ 6727 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6728 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6729 super(context, 6730 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6731 com.android.internal.R.layout.select_dialog_singlechoice, 6732 objects); 6733 } 6734 6735 @Override 6736 public View getView(int position, View convertView, 6737 ViewGroup parent) { 6738 // Always pass in null so that we will get a new CheckedTextView 6739 // Otherwise, an item which was previously used as an <optgroup> 6740 // element (i.e. has no check), could get used as an <option> 6741 // element, which needs a checkbox/radio, but it would not have 6742 // one. 6743 convertView = super.getView(position, null, parent); 6744 Container c = item(position); 6745 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6746 // ListView does not draw dividers between disabled and 6747 // enabled elements. Use a LinearLayout to provide dividers 6748 LinearLayout layout = new LinearLayout(mContext); 6749 layout.setOrientation(LinearLayout.VERTICAL); 6750 if (position > 0) { 6751 View dividerTop = new View(mContext); 6752 dividerTop.setBackgroundResource( 6753 android.R.drawable.divider_horizontal_bright); 6754 layout.addView(dividerTop); 6755 } 6756 6757 if (Container.OPTGROUP == c.mEnabled) { 6758 // Currently select_dialog_multichoice and 6759 // select_dialog_singlechoice are CheckedTextViews. If 6760 // that changes, the class cast will no longer be valid. 6761 Assert.assertTrue( 6762 convertView instanceof CheckedTextView); 6763 ((CheckedTextView) convertView).setCheckMarkDrawable( 6764 null); 6765 } else { 6766 // c.mEnabled == Container.OPTION_DISABLED 6767 // Draw the disabled element in a disabled state. 6768 convertView.setEnabled(false); 6769 } 6770 6771 layout.addView(convertView); 6772 if (position < getCount() - 1) { 6773 View dividerBottom = new View(mContext); 6774 dividerBottom.setBackgroundResource( 6775 android.R.drawable.divider_horizontal_bright); 6776 layout.addView(dividerBottom); 6777 } 6778 return layout; 6779 } 6780 return convertView; 6781 } 6782 6783 @Override 6784 public boolean hasStableIds() { 6785 // AdapterView's onChanged method uses this to determine whether 6786 // to restore the old state. Return false so that the old (out 6787 // of date) state does not replace the new, valid state. 6788 return false; 6789 } 6790 6791 private Container item(int position) { 6792 if (position < 0 || position >= getCount()) { 6793 return null; 6794 } 6795 return (Container) getItem(position); 6796 } 6797 6798 @Override 6799 public long getItemId(int position) { 6800 Container item = item(position); 6801 if (item == null) { 6802 return -1; 6803 } 6804 return item.mId; 6805 } 6806 6807 @Override 6808 public boolean areAllItemsEnabled() { 6809 return false; 6810 } 6811 6812 @Override 6813 public boolean isEnabled(int position) { 6814 Container item = item(position); 6815 if (item == null) { 6816 return false; 6817 } 6818 return Container.OPTION_ENABLED == item.mEnabled; 6819 } 6820 } 6821 6822 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 6823 mMultiple = true; 6824 mSelectedArray = selected; 6825 6826 int length = array.length; 6827 mContainers = new Container[length]; 6828 for (int i = 0; i < length; i++) { 6829 mContainers[i] = new Container(); 6830 mContainers[i].mString = array[i]; 6831 mContainers[i].mEnabled = enabled[i]; 6832 mContainers[i].mId = i; 6833 } 6834 } 6835 6836 private InvokeListBox(String[] array, int[] enabled, int selection) { 6837 mSelection = selection; 6838 mMultiple = false; 6839 6840 int length = array.length; 6841 mContainers = new Container[length]; 6842 for (int i = 0; i < length; i++) { 6843 mContainers[i] = new Container(); 6844 mContainers[i].mString = array[i]; 6845 mContainers[i].mEnabled = enabled[i]; 6846 mContainers[i].mId = i; 6847 } 6848 } 6849 6850 /* 6851 * Whenever the data set changes due to filtering, this class ensures 6852 * that the checked item remains checked. 6853 */ 6854 private class SingleDataSetObserver extends DataSetObserver { 6855 private long mCheckedId; 6856 private ListView mListView; 6857 private Adapter mAdapter; 6858 6859 /* 6860 * Create a new observer. 6861 * @param id The ID of the item to keep checked. 6862 * @param l ListView for getting and clearing the checked states 6863 * @param a Adapter for getting the IDs 6864 */ 6865 public SingleDataSetObserver(long id, ListView l, Adapter a) { 6866 mCheckedId = id; 6867 mListView = l; 6868 mAdapter = a; 6869 } 6870 6871 public void onChanged() { 6872 // The filter may have changed which item is checked. Find the 6873 // item that the ListView thinks is checked. 6874 int position = mListView.getCheckedItemPosition(); 6875 long id = mAdapter.getItemId(position); 6876 if (mCheckedId != id) { 6877 // Clear the ListView's idea of the checked item, since 6878 // it is incorrect 6879 mListView.clearChoices(); 6880 // Search for mCheckedId. If it is in the filtered list, 6881 // mark it as checked 6882 int count = mAdapter.getCount(); 6883 for (int i = 0; i < count; i++) { 6884 if (mAdapter.getItemId(i) == mCheckedId) { 6885 mListView.setItemChecked(i, true); 6886 break; 6887 } 6888 } 6889 } 6890 } 6891 6892 public void onInvalidate() {} 6893 } 6894 6895 public void run() { 6896 final ListView listView = (ListView) LayoutInflater.from(mContext) 6897 .inflate(com.android.internal.R.layout.select_dialog, null); 6898 final MyArrayListAdapter adapter = new 6899 MyArrayListAdapter(mContext, mContainers, mMultiple); 6900 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 6901 .setView(listView).setCancelable(true) 6902 .setInverseBackgroundForced(true); 6903 6904 if (mMultiple) { 6905 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 6906 public void onClick(DialogInterface dialog, int which) { 6907 mWebViewCore.sendMessage( 6908 EventHub.LISTBOX_CHOICES, 6909 adapter.getCount(), 0, 6910 listView.getCheckedItemPositions()); 6911 }}); 6912 b.setNegativeButton(android.R.string.cancel, 6913 new DialogInterface.OnClickListener() { 6914 public void onClick(DialogInterface dialog, int which) { 6915 mWebViewCore.sendMessage( 6916 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6917 }}); 6918 } 6919 final AlertDialog dialog = b.create(); 6920 listView.setAdapter(adapter); 6921 listView.setFocusableInTouchMode(true); 6922 // There is a bug (1250103) where the checks in a ListView with 6923 // multiple items selected are associated with the positions, not 6924 // the ids, so the items do not properly retain their checks when 6925 // filtered. Do not allow filtering on multiple lists until 6926 // that bug is fixed. 6927 6928 listView.setTextFilterEnabled(!mMultiple); 6929 if (mMultiple) { 6930 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 6931 int length = mSelectedArray.length; 6932 for (int i = 0; i < length; i++) { 6933 listView.setItemChecked(mSelectedArray[i], true); 6934 } 6935 } else { 6936 listView.setOnItemClickListener(new OnItemClickListener() { 6937 public void onItemClick(AdapterView parent, View v, 6938 int position, long id) { 6939 mWebViewCore.sendMessage( 6940 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 6941 dialog.dismiss(); 6942 } 6943 }); 6944 if (mSelection != -1) { 6945 listView.setSelection(mSelection); 6946 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 6947 listView.setItemChecked(mSelection, true); 6948 DataSetObserver observer = new SingleDataSetObserver( 6949 adapter.getItemId(mSelection), listView, adapter); 6950 adapter.registerDataSetObserver(observer); 6951 } 6952 } 6953 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 6954 public void onCancel(DialogInterface dialog) { 6955 mWebViewCore.sendMessage( 6956 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6957 } 6958 }); 6959 dialog.show(); 6960 } 6961 } 6962 6963 /* 6964 * Request a dropdown menu for a listbox with multiple selection. 6965 * 6966 * @param array Labels for the listbox. 6967 * @param enabledArray State for each element in the list. See static 6968 * integers in Container class. 6969 * @param selectedArray Which positions are initally selected. 6970 */ 6971 void requestListBox(String[] array, int[] enabledArray, int[] 6972 selectedArray) { 6973 mPrivateHandler.post( 6974 new InvokeListBox(array, enabledArray, selectedArray)); 6975 } 6976 6977 private void updateZoomRange(WebViewCore.RestoreState restoreState, 6978 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 6979 if (restoreState.mMinScale == 0) { 6980 if (restoreState.mMobileSite) { 6981 if (minPrefWidth > Math.max(0, viewWidth)) { 6982 mMinZoomScale = (float) viewWidth / minPrefWidth; 6983 mMinZoomScaleFixed = false; 6984 if (updateZoomOverview) { 6985 WebSettings settings = getSettings(); 6986 mInZoomOverview = settings.getUseWideViewPort() && 6987 settings.getLoadWithOverviewMode(); 6988 } 6989 } else { 6990 mMinZoomScale = restoreState.mDefaultScale; 6991 mMinZoomScaleFixed = true; 6992 } 6993 } else { 6994 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 6995 mMinZoomScaleFixed = false; 6996 } 6997 } else { 6998 mMinZoomScale = restoreState.mMinScale; 6999 mMinZoomScaleFixed = true; 7000 } 7001 if (restoreState.mMaxScale == 0) { 7002 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 7003 } else { 7004 mMaxZoomScale = restoreState.mMaxScale; 7005 } 7006 } 7007 7008 /* 7009 * Request a dropdown menu for a listbox with single selection or a single 7010 * <select> element. 7011 * 7012 * @param array Labels for the listbox. 7013 * @param enabledArray State for each element in the list. See static 7014 * integers in Container class. 7015 * @param selection Which position is initally selected. 7016 */ 7017 void requestListBox(String[] array, int[] enabledArray, int selection) { 7018 mPrivateHandler.post( 7019 new InvokeListBox(array, enabledArray, selection)); 7020 } 7021 7022 // called by JNI 7023 private void sendMoveFocus(int frame, int node) { 7024 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7025 new WebViewCore.CursorData(frame, node, 0, 0)); 7026 } 7027 7028 // called by JNI 7029 private void sendMoveMouse(int frame, int node, int x, int y) { 7030 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7031 new WebViewCore.CursorData(frame, node, x, y)); 7032 } 7033 7034 /* 7035 * Send a mouse move event to the webcore thread. 7036 * 7037 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7038 * which wants key events, but it is not the focus. This 7039 * will make the visual appear as though nothing is in 7040 * focus. Remove the WebTextView, if present, and stop 7041 * drawing the blinking caret. 7042 * called by JNI 7043 */ 7044 private void sendMoveMouseIfLatest(boolean removeFocus) { 7045 if (removeFocus) { 7046 clearTextEntry(true); 7047 } 7048 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7049 cursorData()); 7050 } 7051 7052 // called by JNI 7053 private void sendMotionUp(int touchGeneration, 7054 int frame, int node, int x, int y) { 7055 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7056 touchUpData.mMoveGeneration = touchGeneration; 7057 touchUpData.mFrame = frame; 7058 touchUpData.mNode = node; 7059 touchUpData.mX = x; 7060 touchUpData.mY = y; 7061 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7062 } 7063 7064 7065 private int getScaledMaxXScroll() { 7066 int width; 7067 if (mHeightCanMeasure == false) { 7068 width = getViewWidth() / 4; 7069 } else { 7070 Rect visRect = new Rect(); 7071 calcOurVisibleRect(visRect); 7072 width = visRect.width() / 2; 7073 } 7074 // FIXME the divisor should be retrieved from somewhere 7075 return viewToContentX(width); 7076 } 7077 7078 private int getScaledMaxYScroll() { 7079 int height; 7080 if (mHeightCanMeasure == false) { 7081 height = getViewHeight() / 4; 7082 } else { 7083 Rect visRect = new Rect(); 7084 calcOurVisibleRect(visRect); 7085 height = visRect.height() / 2; 7086 } 7087 // FIXME the divisor should be retrieved from somewhere 7088 // the closest thing today is hard-coded into ScrollView.java 7089 // (from ScrollView.java, line 363) int maxJump = height/2; 7090 return Math.round(height * mInvActualScale); 7091 } 7092 7093 /** 7094 * Called by JNI to invalidate view 7095 */ 7096 private void viewInvalidate() { 7097 invalidate(); 7098 } 7099 7100 /** 7101 * Pass the key to the plugin. This assumes that nativeFocusIsPlugin() 7102 * returned true. 7103 */ 7104 private void letPluginHandleNavKey(int keyCode, long time, boolean down) { 7105 int keyEventAction; 7106 int eventHubAction; 7107 if (down) { 7108 keyEventAction = KeyEvent.ACTION_DOWN; 7109 eventHubAction = EventHub.KEY_DOWN; 7110 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7111 } else { 7112 keyEventAction = KeyEvent.ACTION_UP; 7113 eventHubAction = EventHub.KEY_UP; 7114 } 7115 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7116 1, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 7117 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 7118 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 7119 , 0, 0, 0); 7120 mWebViewCore.sendMessage(eventHubAction, event); 7121 } 7122 7123 // return true if the key was handled 7124 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7125 long time) { 7126 if (mNativeClass == 0) { 7127 return false; 7128 } 7129 mLastCursorTime = time; 7130 mLastCursorBounds = nativeGetCursorRingBounds(); 7131 boolean keyHandled 7132 = nativeMoveCursor(keyCode, count, noScroll) == false; 7133 if (DebugFlags.WEB_VIEW) { 7134 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7135 + " mLastCursorTime=" + mLastCursorTime 7136 + " handled=" + keyHandled); 7137 } 7138 if (keyHandled == false || mHeightCanMeasure == false) { 7139 return keyHandled; 7140 } 7141 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7142 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7143 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7144 Rect visRect = new Rect(); 7145 calcOurVisibleRect(visRect); 7146 Rect outset = new Rect(visRect); 7147 int maxXScroll = visRect.width() / 2; 7148 int maxYScroll = visRect.height() / 2; 7149 outset.inset(-maxXScroll, -maxYScroll); 7150 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7151 return keyHandled; 7152 } 7153 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7154 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7155 maxXScroll); 7156 if (maxH > 0) { 7157 pinScrollBy(maxH, 0, true, 0); 7158 } else { 7159 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7160 -maxXScroll); 7161 if (maxH < 0) { 7162 pinScrollBy(maxH, 0, true, 0); 7163 } 7164 } 7165 if (mLastCursorBounds.isEmpty()) return keyHandled; 7166 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7167 return keyHandled; 7168 } 7169 if (DebugFlags.WEB_VIEW) { 7170 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7171 + contentCursorRingBounds); 7172 } 7173 requestRectangleOnScreen(viewCursorRingBounds); 7174 mUserScroll = true; 7175 return keyHandled; 7176 } 7177 7178 /** 7179 * Set the background color. It's white by default. Pass 7180 * zero to make the view transparent. 7181 * @param color the ARGB color described by Color.java 7182 */ 7183 public void setBackgroundColor(int color) { 7184 mBackgroundColor = color; 7185 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7186 } 7187 7188 public void debugDump() { 7189 nativeDebugDump(); 7190 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7191 } 7192 7193 /** 7194 * Draw the HTML page into the specified canvas. This call ignores any 7195 * view-specific zoom, scroll offset, or other changes. It does not draw 7196 * any view-specific chrome, such as progress or URL bars. 7197 * 7198 * @hide only needs to be accessible to Browser and testing 7199 */ 7200 public void drawPage(Canvas canvas) { 7201 mWebViewCore.drawContentPicture(canvas, 0, false, false); 7202 } 7203 7204 /** 7205 * Set the time to wait between passing touches to WebCore. See also the 7206 * TOUCH_SENT_INTERVAL member for further discussion. 7207 * 7208 * @hide This is only used by the DRT test application. 7209 */ 7210 public void setTouchInterval(int interval) { 7211 mCurrentTouchInterval = interval; 7212 } 7213 7214 /** 7215 * Update our cache with updatedText. 7216 * @param updatedText The new text to put in our cache. 7217 */ 7218 /* package */ void updateCachedTextfield(String updatedText) { 7219 // Also place our generation number so that when we look at the cache 7220 // we recognize that it is up to date. 7221 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7222 } 7223 7224 private native int nativeCacheHitFramePointer(); 7225 private native Rect nativeCacheHitNodeBounds(); 7226 private native int nativeCacheHitNodePointer(); 7227 /* package */ native void nativeClearCursor(); 7228 private native void nativeCreate(int ptr); 7229 private native int nativeCursorFramePointer(); 7230 private native Rect nativeCursorNodeBounds(); 7231 private native int nativeCursorNodePointer(); 7232 /* package */ native boolean nativeCursorMatchesFocus(); 7233 private native boolean nativeCursorIntersects(Rect visibleRect); 7234 private native boolean nativeCursorIsAnchor(); 7235 private native boolean nativeCursorIsTextInput(); 7236 private native Point nativeCursorPosition(); 7237 private native String nativeCursorText(); 7238 /** 7239 * Returns true if the native cursor node says it wants to handle key events 7240 * (ala plugins). This can only be called if mNativeClass is non-zero! 7241 */ 7242 private native boolean nativeCursorWantsKeyEvents(); 7243 private native void nativeDebugDump(); 7244 private native void nativeDestroy(); 7245 private native boolean nativeEvaluateLayersAnimations(); 7246 private native void nativeDrawExtras(Canvas canvas, int extra); 7247 private native void nativeDumpDisplayTree(String urlOrNull); 7248 private native int nativeFindAll(String findLower, String findUpper); 7249 private native void nativeFindNext(boolean forward); 7250 /* package */ native int nativeFocusCandidateFramePointer(); 7251 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 7252 private native boolean nativeFocusCandidateIsPassword(); 7253 private native boolean nativeFocusCandidateIsRtlText(); 7254 private native boolean nativeFocusCandidateIsTextInput(); 7255 /* package */ native int nativeFocusCandidateMaxLength(); 7256 /* package */ native String nativeFocusCandidateName(); 7257 private native Rect nativeFocusCandidateNodeBounds(); 7258 private native int nativeFocusCandidatePointer(); 7259 private native String nativeFocusCandidateText(); 7260 private native int nativeFocusCandidateTextSize(); 7261 /** 7262 * Returns an integer corresponding to WebView.cpp::type. 7263 * See WebTextView.setType() 7264 */ 7265 private native int nativeFocusCandidateType(); 7266 private native boolean nativeFocusIsPlugin(); 7267 private native Rect nativeFocusNodeBounds(); 7268 /* package */ native int nativeFocusNodePointer(); 7269 private native Rect nativeGetCursorRingBounds(); 7270 private native String nativeGetSelection(); 7271 private native boolean nativeHasCursorNode(); 7272 private native boolean nativeHasFocusNode(); 7273 private native void nativeHideCursor(); 7274 private native String nativeImageURI(int x, int y); 7275 private native void nativeInstrumentReport(); 7276 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7277 // return true if the page has been scrolled 7278 private native boolean nativeMotionUp(int x, int y, int slop); 7279 // returns false if it handled the key 7280 private native boolean nativeMoveCursor(int keyCode, int count, 7281 boolean noScroll); 7282 private native int nativeMoveGeneration(); 7283 private native void nativeMoveSelection(int x, int y, 7284 boolean extendSelection); 7285 private native boolean nativePointInNavCache(int x, int y, int slop); 7286 // Like many other of our native methods, you must make sure that 7287 // mNativeClass is not null before calling this method. 7288 private native void nativeRecordButtons(boolean focused, 7289 boolean pressed, boolean invalidate); 7290 private native void nativeSelectBestAt(Rect rect); 7291 private native void nativeSetFindIsEmpty(); 7292 private native void nativeSetFindIsUp(boolean isUp); 7293 private native void nativeSetFollowedLink(boolean followed); 7294 private native void nativeSetHeightCanMeasure(boolean measure); 7295 private native void nativeSetRootLayer(int layer); 7296 private native void nativeSetSelectionPointer(boolean set, 7297 float scale, int x, int y, boolean extendSelection); 7298 private native void nativeSetSelectionRegion(boolean set); 7299 private native Rect nativeSubtractLayers(Rect content); 7300 private native int nativeTextGeneration(); 7301 // Never call this version except by updateCachedTextfield(String) - 7302 // we always want to pass in our generation number. 7303 private native void nativeUpdateCachedTextfield(String updatedText, 7304 int generation); 7305 // return NO_LEFTEDGE means failure. 7306 private static final int NO_LEFTEDGE = -1; 7307 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 7308} 7309