WebView.java revision f6bd0ba6308673a8b6bb9f71dd40a09d11c0d90d
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.app.AlertDialog; 20import android.content.Context; 21import android.content.DialogInterface; 22import android.content.Intent; 23import android.content.DialogInterface.OnCancelListener; 24import android.content.pm.PackageManager; 25import android.database.DataSetObserver; 26import android.graphics.Bitmap; 27import android.graphics.Canvas; 28import android.graphics.Color; 29import android.graphics.Interpolator; 30import android.graphics.Picture; 31import android.graphics.Point; 32import android.graphics.Rect; 33import android.graphics.drawable.Drawable; 34import android.net.http.SslCertificate; 35import android.net.Uri; 36import android.os.Bundle; 37import android.os.Handler; 38import android.os.Message; 39import android.os.ServiceManager; 40import android.os.SystemClock; 41import android.text.IClipboard; 42import android.text.Selection; 43import android.text.Spannable; 44import android.util.AttributeSet; 45import android.util.EventLog; 46import android.util.Log; 47import android.util.TypedValue; 48import android.view.Gravity; 49import android.view.KeyEvent; 50import android.view.LayoutInflater; 51import android.view.MotionEvent; 52import android.view.ScaleGestureDetector; 53import android.view.SoundEffectConstants; 54import android.view.VelocityTracker; 55import android.view.View; 56import android.view.ViewConfiguration; 57import android.view.ViewGroup; 58import android.view.ViewTreeObserver; 59import android.view.animation.AlphaAnimation; 60import android.view.inputmethod.EditorInfo; 61import android.view.inputmethod.InputConnection; 62import android.view.inputmethod.InputMethodManager; 63import android.webkit.WebTextView.AutoCompleteAdapter; 64import android.webkit.WebViewCore.EventHub; 65import android.widget.AbsoluteLayout; 66import android.widget.Adapter; 67import android.widget.AdapterView; 68import android.widget.ArrayAdapter; 69import android.widget.CheckedTextView; 70import android.widget.FrameLayout; 71import android.widget.LinearLayout; 72import android.widget.ListView; 73import android.widget.Scroller; 74import android.widget.Toast; 75import android.widget.ZoomButtonsController; 76import android.widget.ZoomControls; 77import android.widget.AdapterView.OnItemClickListener; 78 79import java.io.File; 80import java.io.FileInputStream; 81import java.io.FileNotFoundException; 82import java.io.FileOutputStream; 83import java.io.IOException; 84import java.net.URLDecoder; 85import java.util.ArrayList; 86import java.util.List; 87import java.util.HashMap; 88import java.util.Map; 89import java.util.Set; 90 91import junit.framework.Assert; 92 93/** 94 * <p>A View that displays web pages. This class is the basis upon which you 95 * can roll your own web browser or simply display some online content within your Activity. 96 * It uses the WebKit rendering engine to display 97 * web pages and includes methods to navigate forward and backward 98 * through a history, zoom in and out, perform text searches and more.</p> 99 * <p>To enable the built-in zoom, set 100 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 101 * (introduced in API version 3). 102 * <p>Note that, in order for your Activity to access the Internet and load web pages 103 * in a WebView, you must add the <var>INTERNET</var> permissions to your 104 * Android Manifest file:</p> 105 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 106 * 107 * <p>This must be a child of the <code><manifest></code> element.</p> 108 * 109 * <h3>Basic usage</h3> 110 * 111 * <p>By default, a WebView provides no browser-like widgets, does not 112 * enable JavaScript and errors will be ignored. If your goal is only 113 * to display some HTML as a part of your UI, this is probably fine; 114 * the user won't need to interact with the web page beyond reading 115 * it, and the web page won't need to interact with the user. If you 116 * actually want a fully blown web browser, then you probably want to 117 * invoke the Browser application with your URL rather than show it 118 * with a WebView. See {@link android.content.Intent} for more information.</p> 119 * 120 * <pre class="prettyprint"> 121 * WebView webview = new WebView(this); 122 * setContentView(webview); 123 * 124 * // Simplest usage: note that an exception will NOT be thrown 125 * // if there is an error loading this page (see below). 126 * webview.loadUrl("http://slashdot.org/"); 127 * 128 * // Of course you can also load from any string: 129 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 130 * webview.loadData(summary, "text/html", "utf-8"); 131 * // ... although note that there are restrictions on what this HTML can do. 132 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 133 * </pre> 134 * 135 * <p>A WebView has several customization points where you can add your 136 * own behavior. These are:</p> 137 * 138 * <ul> 139 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 140 * This class is called when something that might impact a 141 * browser UI happens, for instance, progress updates and 142 * JavaScript alerts are sent here. 143 * </li> 144 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 145 * It will be called when things happen that impact the 146 * rendering of the content, eg, errors or form submissions. You 147 * can also intercept URL loading here.</li> 148 * <li>Via the {@link android.webkit.WebSettings} class, which contains 149 * miscellaneous configuration. </li> 150 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 151 * This lets you bind Java objects into the WebView so they can be 152 * controlled from the web pages JavaScript.</li> 153 * </ul> 154 * 155 * <p>Here's a more complicated example, showing error handling, 156 * settings, and progress notification:</p> 157 * 158 * <pre class="prettyprint"> 159 * // Let's display the progress in the activity title bar, like the 160 * // browser app does. 161 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 162 * 163 * webview.getSettings().setJavaScriptEnabled(true); 164 * 165 * final Activity activity = this; 166 * webview.setWebChromeClient(new WebChromeClient() { 167 * public void onProgressChanged(WebView view, int progress) { 168 * // Activities and WebViews measure progress with different scales. 169 * // The progress meter will automatically disappear when we reach 100% 170 * activity.setProgress(progress * 1000); 171 * } 172 * }); 173 * webview.setWebViewClient(new WebViewClient() { 174 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 175 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 176 * } 177 * }); 178 * 179 * webview.loadUrl("http://slashdot.org/"); 180 * </pre> 181 * 182 * <h3>Cookie and window management</h3> 183 * 184 * <p>For obvious security reasons, your application has its own 185 * cache, cookie store etc - it does not share the Browser 186 * applications data. Cookies are managed on a separate thread, so 187 * operations like index building don't block the UI 188 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 189 * if you want to use cookies in your application. 190 * </p> 191 * 192 * <p>By default, requests by the HTML to open new windows are 193 * ignored. This is true whether they be opened by JavaScript or by 194 * the target attribute on a link. You can customize your 195 * WebChromeClient to provide your own behaviour for opening multiple windows, 196 * and render them in whatever manner you want.</p> 197 * 198 * <p>Standard behavior for an Activity is to be destroyed and 199 * recreated when the devices orientation is changed. This will cause 200 * the WebView to reload the current page. If you don't want that, you 201 * can set your Activity to handle the orientation and keyboardHidden 202 * changes, and then just leave the WebView alone. It'll automatically 203 * re-orient itself as appropriate.</p> 204 */ 205public class WebView extends AbsoluteLayout 206 implements ViewTreeObserver.OnGlobalFocusChangeListener, 207 ViewGroup.OnHierarchyChangeListener { 208 209 // enable debug output for drag trackers 210 private static final boolean DEBUG_DRAG_TRACKER = false; 211 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 212 // the screen all-the-time. Good for profiling our drawing code 213 static private final boolean AUTO_REDRAW_HACK = false; 214 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 215 private boolean mAutoRedraw; 216 217 static final String LOGTAG = "webview"; 218 219 private static class ExtendedZoomControls extends FrameLayout { 220 public ExtendedZoomControls(Context context, AttributeSet attrs) { 221 super(context, attrs); 222 LayoutInflater inflater = (LayoutInflater) 223 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 224 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 225 mPlusMinusZoomControls = (ZoomControls) findViewById( 226 com.android.internal.R.id.zoomControls); 227 findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( 228 View.GONE); 229 } 230 231 public void show(boolean showZoom, boolean canZoomOut) { 232 mPlusMinusZoomControls.setVisibility( 233 showZoom ? View.VISIBLE : View.GONE); 234 fade(View.VISIBLE, 0.0f, 1.0f); 235 } 236 237 public void hide() { 238 fade(View.GONE, 1.0f, 0.0f); 239 } 240 241 private void fade(int visibility, float startAlpha, float endAlpha) { 242 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 243 anim.setDuration(500); 244 startAnimation(anim); 245 setVisibility(visibility); 246 } 247 248 public boolean hasFocus() { 249 return mPlusMinusZoomControls.hasFocus(); 250 } 251 252 public void setOnZoomInClickListener(OnClickListener listener) { 253 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 254 } 255 256 public void setOnZoomOutClickListener(OnClickListener listener) { 257 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 258 } 259 260 ZoomControls mPlusMinusZoomControls; 261 } 262 263 /** 264 * Transportation object for returning WebView across thread boundaries. 265 */ 266 public class WebViewTransport { 267 private WebView mWebview; 268 269 /** 270 * Set the WebView to the transportation object. 271 * @param webview The WebView to transport. 272 */ 273 public synchronized void setWebView(WebView webview) { 274 mWebview = webview; 275 } 276 277 /** 278 * Return the WebView object. 279 * @return WebView The transported WebView object. 280 */ 281 public synchronized WebView getWebView() { 282 return mWebview; 283 } 284 } 285 286 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 287 private final CallbackProxy mCallbackProxy; 288 289 private final WebViewDatabase mDatabase; 290 291 // SSL certificate for the main top-level page (if secure) 292 private SslCertificate mCertificate; 293 294 // Native WebView pointer that is 0 until the native object has been 295 // created. 296 private int mNativeClass; 297 // This would be final but it needs to be set to null when the WebView is 298 // destroyed. 299 private WebViewCore mWebViewCore; 300 // Handler for dispatching UI messages. 301 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 302 private WebTextView mWebTextView; 303 // Used to ignore changes to webkit text that arrives to the UI side after 304 // more key events. 305 private int mTextGeneration; 306 307 // Used by WebViewCore to create child views. 308 /* package */ final ViewManager mViewManager; 309 310 // Used to display in full screen mode 311 PluginFullScreenHolder mFullScreenHolder; 312 313 /** 314 * Position of the last touch event. 315 */ 316 private float mLastTouchX; 317 private float mLastTouchY; 318 319 /** 320 * Time of the last touch event. 321 */ 322 private long mLastTouchTime; 323 324 /** 325 * Time of the last time sending touch event to WebViewCore 326 */ 327 private long mLastSentTouchTime; 328 329 /** 330 * The minimum elapsed time before sending another ACTION_MOVE event to 331 * WebViewCore. This really should be tuned for each type of the devices. 332 * For example in Google Map api test case, it takes Dream device at least 333 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 334 * triggering the layout and drawing the picture. While the same process 335 * takes 60+ms on the current high speed device. If we make 336 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 337 * to WebViewCore queue and the real layout and draw events will be pushed 338 * to further, which slows down the refresh rate. Choose 50 to favor the 339 * current high speed devices. For Dream like devices, 100 is a better 340 * choice. Maybe make this in the buildspec later. 341 */ 342 private static final int TOUCH_SENT_INTERVAL = 50; 343 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 344 345 /** 346 * Helper class to get velocity for fling 347 */ 348 VelocityTracker mVelocityTracker; 349 private int mMaximumFling; 350 private float mLastVelocity; 351 private float mLastVelX; 352 private float mLastVelY; 353 354 /** 355 * Touch mode 356 */ 357 private int mTouchMode = TOUCH_DONE_MODE; 358 private static final int TOUCH_INIT_MODE = 1; 359 private static final int TOUCH_DRAG_START_MODE = 2; 360 private static final int TOUCH_DRAG_MODE = 3; 361 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 362 private static final int TOUCH_SHORTPRESS_MODE = 5; 363 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 364 private static final int TOUCH_DONE_MODE = 7; 365 private static final int TOUCH_SELECT_MODE = 8; 366 private static final int TOUCH_PINCH_DRAG = 9; 367 368 // Whether to forward the touch events to WebCore 369 private boolean mForwardTouchEvents = false; 370 371 // Whether to prevent drag during touch. The initial value depends on 372 // mForwardTouchEvents. If WebCore wants touch events, we assume it will 373 // take control of touch events unless it says no for touch down event. 374 private static final int PREVENT_DRAG_NO = 0; 375 private static final int PREVENT_DRAG_MAYBE_YES = 1; 376 private static final int PREVENT_DRAG_YES = 2; 377 private static final int PREVENT_DRAG_CANCEL = 3; 378 private int mPreventDrag = PREVENT_DRAG_NO; 379 380 // by default mPreventLongPress is false. If it is true, long press event 381 // will be handled by WebKit instead of UI. 382 private boolean mPreventLongPress = false; 383 // by default mPreventDoubleTap is false. If it is true, double tap event 384 // will be handled by WebKit instead of UI. 385 private boolean mPreventDoubleTap = false; 386 387 // this needs to be in sync with the logic in WebKit's 388 // EventHandler::handleTouchEvent() 389 private static final int TOUCH_PREVENT_DRAG = 0x1; 390 private static final int TOUCH_PREVENT_LONGPRESS = 0x2; 391 private static final int TOUCH_PREVENT_DOUBLETAP = 0x4; 392 393 // To keep track of whether the current drag was initiated by a WebTextView, 394 // so that we know not to hide the cursor 395 boolean mDragFromTextInput; 396 397 // Whether or not to draw the cursor ring. 398 private boolean mDrawCursorRing = true; 399 400 // true if onPause has been called (and not onResume) 401 private boolean mIsPaused; 402 403 /** 404 * Customizable constant 405 */ 406 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 407 private int mTouchSlopSquare; 408 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 409 private int mDoubleTapSlopSquare; 410 // pre-computed density adjusted navigation slop 411 private int mNavSlop; 412 // This should be ViewConfiguration.getTapTimeout() 413 // But system time out is 100ms, which is too short for the browser. 414 // In the browser, if it switches out of tap too soon, jump tap won't work. 415 private static final int TAP_TIMEOUT = 200; 416 // This should be ViewConfiguration.getLongPressTimeout() 417 // But system time out is 500ms, which is too short for the browser. 418 // With a short timeout, it's difficult to treat trigger a short press. 419 private static final int LONG_PRESS_TIMEOUT = 1000; 420 // needed to avoid flinging after a pause of no movement 421 private static final int MIN_FLING_TIME = 250; 422 // draw unfiltered after drag is held without movement 423 private static final int MOTIONLESS_TIME = 100; 424 // The time that the Zoom Controls are visible before fading away 425 private static final long ZOOM_CONTROLS_TIMEOUT = 426 ViewConfiguration.getZoomControlsTimeout(); 427 // The amount of content to overlap between two screens when going through 428 // pages with the space bar, in pixels. 429 private static final int PAGE_SCROLL_OVERLAP = 24; 430 431 /** 432 * These prevent calling requestLayout if either dimension is fixed. This 433 * depends on the layout parameters and the measure specs. 434 */ 435 boolean mWidthCanMeasure; 436 boolean mHeightCanMeasure; 437 438 // Remember the last dimensions we sent to the native side so we can avoid 439 // sending the same dimensions more than once. 440 int mLastWidthSent; 441 int mLastHeightSent; 442 443 private int mContentWidth; // cache of value from WebViewCore 444 private int mContentHeight; // cache of value from WebViewCore 445 446 // Need to have the separate control for horizontal and vertical scrollbar 447 // style than the View's single scrollbar style 448 private boolean mOverlayHorizontalScrollbar = true; 449 private boolean mOverlayVerticalScrollbar = false; 450 451 // our standard speed. this way small distances will be traversed in less 452 // time than large distances, but we cap the duration, so that very large 453 // distances won't take too long to get there. 454 private static final int STD_SPEED = 480; // pixels per second 455 // time for the longest scroll animation 456 private static final int MAX_DURATION = 750; // milliseconds 457 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 458 private Scroller mScroller; 459 460 private boolean mWrapContent; 461 private static final int MOTIONLESS_FALSE = 0; 462 private static final int MOTIONLESS_PENDING = 1; 463 private static final int MOTIONLESS_TRUE = 2; 464 private int mHeldMotionless; 465 466 // whether support multi-touch 467 private boolean mSupportMultiTouch; 468 // use the framework's ScaleGestureDetector to handle multi-touch 469 private ScaleGestureDetector mScaleDetector; 470 // minimum scale change during multi-touch zoom 471 private static float PREVIEW_SCALE_INCREMENT = 0.01f; 472 473 // the anchor point in the document space where VIEW_SIZE_CHANGED should 474 // apply to 475 private int mAnchorX; 476 private int mAnchorY; 477 478 /** 479 * Private message ids 480 */ 481 private static final int REMEMBER_PASSWORD = 1; 482 private static final int NEVER_REMEMBER_PASSWORD = 2; 483 private static final int SWITCH_TO_SHORTPRESS = 3; 484 private static final int SWITCH_TO_LONGPRESS = 4; 485 private static final int RELEASE_SINGLE_TAP = 5; 486 private static final int REQUEST_FORM_DATA = 6; 487 private static final int RESUME_WEBCORE_PRIORITY = 7; 488 private static final int DRAG_HELD_MOTIONLESS = 8; 489 private static final int AWAKEN_SCROLL_BARS = 9; 490 491 //! arg1=x, arg2=y 492 static final int SCROLL_TO_MSG_ID = 10; 493 static final int SCROLL_BY_MSG_ID = 11; 494 //! arg1=x, arg2=y 495 static final int SPAWN_SCROLL_TO_MSG_ID = 12; 496 //! arg1=x, arg2=y 497 static final int SYNC_SCROLL_TO_MSG_ID = 13; 498 static final int NEW_PICTURE_MSG_ID = 14; 499 static final int UPDATE_TEXT_ENTRY_MSG_ID = 15; 500 static final int WEBCORE_INITIALIZED_MSG_ID = 16; 501 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 17; 502 static final int UPDATE_ZOOM_RANGE = 18; 503 static final int MOVE_OUT_OF_PLUGIN = 19; 504 static final int CLEAR_TEXT_ENTRY = 20; 505 static final int UPDATE_TEXT_SELECTION_MSG_ID = 21; 506 static final int SHOW_RECT_MSG_ID = 22; 507 static final int LONG_PRESS_CENTER = 23; 508 static final int PREVENT_TOUCH_ID = 24; 509 static final int WEBCORE_NEED_TOUCH_EVENTS = 25; 510 // obj=Rect in doc coordinates 511 static final int INVAL_RECT_MSG_ID = 26; 512 static final int REQUEST_KEYBOARD = 27; 513 static final int DO_MOTION_UP = 28; 514 static final int SHOW_FULLSCREEN = 29; 515 static final int HIDE_FULLSCREEN = 30; 516 static final int DOM_FOCUS_CHANGED = 31; 517 static final int IMMEDIATE_REPAINT_MSG_ID = 32; 518 static final int SET_ROOT_LAYER_MSG_ID = 33; 519 static final int RETURN_LABEL = 34; 520 static final int FIND_AGAIN = 35; 521 522 static final String[] HandlerDebugString = { 523 "REMEMBER_PASSWORD", // = 1; 524 "NEVER_REMEMBER_PASSWORD", // = 2; 525 "SWITCH_TO_SHORTPRESS", // = 3; 526 "SWITCH_TO_LONGPRESS", // = 4; 527 "RELEASE_SINGLE_TAP", // = 5; 528 "REQUEST_FORM_DATA", // = 6; 529 "RESUME_WEBCORE_PRIORITY", // = 7; 530 "DRAG_HELD_MOTIONLESS", // = 8; 531 "AWAKEN_SCROLL_BARS", // = 9; 532 "SCROLL_TO_MSG_ID", // = 10; 533 "SCROLL_BY_MSG_ID", // = 11; 534 "SPAWN_SCROLL_TO_MSG_ID", // = 12; 535 "SYNC_SCROLL_TO_MSG_ID", // = 13; 536 "NEW_PICTURE_MSG_ID", // = 14; 537 "UPDATE_TEXT_ENTRY_MSG_ID", // = 15; 538 "WEBCORE_INITIALIZED_MSG_ID", // = 16; 539 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 17; 540 "UPDATE_ZOOM_RANGE", // = 18; 541 "MOVE_OUT_OF_PLUGIN", // = 19; 542 "CLEAR_TEXT_ENTRY", // = 20; 543 "UPDATE_TEXT_SELECTION_MSG_ID", // = 21; 544 "SHOW_RECT_MSG_ID", // = 22; 545 "LONG_PRESS_CENTER", // = 23; 546 "PREVENT_TOUCH_ID", // = 24; 547 "WEBCORE_NEED_TOUCH_EVENTS", // = 25; 548 "INVAL_RECT_MSG_ID", // = 26; 549 "REQUEST_KEYBOARD", // = 27; 550 "DO_MOTION_UP", // = 28; 551 "SHOW_FULLSCREEN", // = 29; 552 "HIDE_FULLSCREEN", // = 30; 553 "DOM_FOCUS_CHANGED", // = 31; 554 "IMMEDIATE_REPAINT_MSG_ID", // = 32; 555 "SET_ROOT_LAYER_MSG_ID", // = 33; 556 "RETURN_LABEL", // = 34; 557 "FIND_AGAIN" // = 35; 558 }; 559 560 // If the site doesn't use the viewport meta tag to specify the viewport, 561 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 562 static final int DEFAULT_VIEWPORT_WIDTH = 800; 563 564 // normally we try to fit the content to the minimum preferred width 565 // calculated by the Webkit. To avoid the bad behavior when some site's 566 // minimum preferred width keeps growing when changing the viewport width or 567 // the minimum preferred width is huge, an upper limit is needed. 568 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 569 570 // default scale limit. Depending on the display density 571 private static float DEFAULT_MAX_ZOOM_SCALE; 572 private static float DEFAULT_MIN_ZOOM_SCALE; 573 // scale limit, which can be set through viewport meta tag in the web page 574 private float mMaxZoomScale; 575 private float mMinZoomScale; 576 private boolean mMinZoomScaleFixed = true; 577 578 // initial scale in percent. 0 means using default. 579 private int mInitialScaleInPercent = 0; 580 581 // while in the zoom overview mode, the page's width is fully fit to the 582 // current window. The page is alive, in another words, you can click to 583 // follow the links. Double tap will toggle between zoom overview mode and 584 // the last zoom scale. 585 boolean mInZoomOverview = false; 586 587 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 588 // engadget always have wider mContentWidth no matter what viewport size is. 589 int mZoomOverviewWidth = DEFAULT_VIEWPORT_WIDTH; 590 float mTextWrapScale; 591 592 // default scale. Depending on the display density. 593 static int DEFAULT_SCALE_PERCENT; 594 private float mDefaultScale; 595 596 // set to true temporarily during ScaleGesture triggered zoom 597 private boolean mPreviewZoomOnly = false; 598 599 // computed scale and inverse, from mZoomWidth. 600 private float mActualScale; 601 private float mInvActualScale; 602 // if this is non-zero, it is used on drawing rather than mActualScale 603 private float mZoomScale; 604 private float mInvInitialZoomScale; 605 private float mInvFinalZoomScale; 606 private int mInitialScrollX; 607 private int mInitialScrollY; 608 private long mZoomStart; 609 private static final int ZOOM_ANIMATION_LENGTH = 500; 610 611 private boolean mUserScroll = false; 612 613 private int mSnapScrollMode = SNAP_NONE; 614 private static final int SNAP_NONE = 0; 615 private static final int SNAP_LOCK = 1; // not a separate state 616 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 617 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 618 private boolean mSnapPositive; 619 620 // keep these in sync with their counterparts in WebView.cpp 621 private static final int DRAW_EXTRAS_NONE = 0; 622 private static final int DRAW_EXTRAS_FIND = 1; 623 private static final int DRAW_EXTRAS_SELECTION = 2; 624 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 625 626 // Used to match key downs and key ups 627 private boolean mGotKeyDown; 628 629 /* package */ static boolean mLogEvent = true; 630 631 // for event log 632 private long mLastTouchUpTime = 0; 633 634 /** 635 * URI scheme for telephone number 636 */ 637 public static final String SCHEME_TEL = "tel:"; 638 /** 639 * URI scheme for email address 640 */ 641 public static final String SCHEME_MAILTO = "mailto:"; 642 /** 643 * URI scheme for map address 644 */ 645 public static final String SCHEME_GEO = "geo:0,0?q="; 646 647 private int mBackgroundColor = Color.WHITE; 648 649 // Used to notify listeners of a new picture. 650 private PictureListener mPictureListener; 651 /** 652 * Interface to listen for new pictures as they change. 653 */ 654 public interface PictureListener { 655 /** 656 * Notify the listener that the picture has changed. 657 * @param view The WebView that owns the picture. 658 * @param picture The new picture. 659 */ 660 public void onNewPicture(WebView view, Picture picture); 661 } 662 663 // FIXME: Want to make this public, but need to change the API file. 664 public /*static*/ class HitTestResult { 665 /** 666 * Default HitTestResult, where the target is unknown 667 */ 668 public static final int UNKNOWN_TYPE = 0; 669 /** 670 * HitTestResult for hitting a HTML::a tag 671 */ 672 public static final int ANCHOR_TYPE = 1; 673 /** 674 * HitTestResult for hitting a phone number 675 */ 676 public static final int PHONE_TYPE = 2; 677 /** 678 * HitTestResult for hitting a map address 679 */ 680 public static final int GEO_TYPE = 3; 681 /** 682 * HitTestResult for hitting an email address 683 */ 684 public static final int EMAIL_TYPE = 4; 685 /** 686 * HitTestResult for hitting an HTML::img tag 687 */ 688 public static final int IMAGE_TYPE = 5; 689 /** 690 * HitTestResult for hitting a HTML::a tag which contains HTML::img 691 */ 692 public static final int IMAGE_ANCHOR_TYPE = 6; 693 /** 694 * HitTestResult for hitting a HTML::a tag with src=http 695 */ 696 public static final int SRC_ANCHOR_TYPE = 7; 697 /** 698 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 699 */ 700 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 701 /** 702 * HitTestResult for hitting an edit text area 703 */ 704 public static final int EDIT_TEXT_TYPE = 9; 705 706 private int mType; 707 private String mExtra; 708 709 HitTestResult() { 710 mType = UNKNOWN_TYPE; 711 } 712 713 private void setType(int type) { 714 mType = type; 715 } 716 717 private void setExtra(String extra) { 718 mExtra = extra; 719 } 720 721 public int getType() { 722 return mType; 723 } 724 725 public String getExtra() { 726 return mExtra; 727 } 728 } 729 730 // The View containing the zoom controls 731 private ExtendedZoomControls mZoomControls; 732 private Runnable mZoomControlRunnable; 733 734 private ZoomButtonsController mZoomButtonsController; 735 736 // These keep track of the center point of the zoom. They are used to 737 // determine the point around which we should zoom. 738 private float mZoomCenterX; 739 private float mZoomCenterY; 740 741 private ZoomButtonsController.OnZoomListener mZoomListener = 742 new ZoomButtonsController.OnZoomListener() { 743 744 public void onVisibilityChanged(boolean visible) { 745 if (visible) { 746 switchOutDrawHistory(); 747 // Bring back the hidden zoom controls. 748 mZoomButtonsController.getZoomControls().setVisibility( 749 View.VISIBLE); 750 updateZoomButtonsEnabled(); 751 } 752 } 753 754 public void onZoom(boolean zoomIn) { 755 if (zoomIn) { 756 zoomIn(); 757 } else { 758 zoomOut(); 759 } 760 761 updateZoomButtonsEnabled(); 762 } 763 }; 764 765 /** 766 * Construct a new WebView with a Context object. 767 * @param context A Context object used to access application assets. 768 */ 769 public WebView(Context context) { 770 this(context, null); 771 } 772 773 /** 774 * Construct a new WebView with layout parameters. 775 * @param context A Context object used to access application assets. 776 * @param attrs An AttributeSet passed to our parent. 777 */ 778 public WebView(Context context, AttributeSet attrs) { 779 this(context, attrs, com.android.internal.R.attr.webViewStyle); 780 } 781 782 /** 783 * Construct a new WebView with layout parameters and a default style. 784 * @param context A Context object used to access application assets. 785 * @param attrs An AttributeSet passed to our parent. 786 * @param defStyle The default style resource ID. 787 */ 788 public WebView(Context context, AttributeSet attrs, int defStyle) { 789 this(context, attrs, defStyle, null); 790 } 791 792 /** 793 * Construct a new WebView with layout parameters, a default style and a set 794 * of custom Javscript interfaces to be added to the WebView at initialization 795 * time. This guarantees that these interfaces will be available when the JS 796 * context is initialized. 797 * @param context A Context object used to access application assets. 798 * @param attrs An AttributeSet passed to our parent. 799 * @param defStyle The default style resource ID. 800 * @param javascriptInterfaces is a Map of intareface names, as keys, and 801 * object implementing those interfaces, as values. 802 * @hide pending API council approval. 803 */ 804 protected WebView(Context context, AttributeSet attrs, int defStyle, 805 Map<String, Object> javascriptInterfaces) { 806 super(context, attrs, defStyle); 807 init(); 808 809 mCallbackProxy = new CallbackProxy(context, this); 810 mViewManager = new ViewManager(this); 811 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 812 mDatabase = WebViewDatabase.getInstance(context); 813 mScroller = new Scroller(context); 814 815 mZoomButtonsController = new ZoomButtonsController(this); 816 mZoomButtonsController.setOnZoomListener(mZoomListener); 817 // ZoomButtonsController positions the buttons at the bottom, but in 818 // the middle. Change their layout parameters so they appear on the 819 // right. 820 View controls = mZoomButtonsController.getZoomControls(); 821 ViewGroup.LayoutParams params = controls.getLayoutParams(); 822 if (params instanceof FrameLayout.LayoutParams) { 823 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 824 params; 825 frameParams.gravity = Gravity.RIGHT; 826 } 827 updateMultiTouchSupport(context); 828 } 829 830 void updateMultiTouchSupport(Context context) { 831 WebSettings settings = getSettings(); 832 mSupportMultiTouch = context.getPackageManager().hasSystemFeature( 833 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 834 && settings.supportZoom() && settings.getBuiltInZoomControls(); 835 if (mSupportMultiTouch && (mScaleDetector == null)) { 836 mScaleDetector = new ScaleGestureDetector(context, 837 new ScaleDetectorListener()); 838 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 839 mScaleDetector = null; 840 } 841 } 842 843 private void updateZoomButtonsEnabled() { 844 boolean canZoomIn = mActualScale < mMaxZoomScale; 845 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 846 if (!canZoomIn && !canZoomOut) { 847 // Hide the zoom in and out buttons, as well as the fit to page 848 // button, if the page cannot zoom 849 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 850 } else { 851 // Set each one individually, as a page may be able to zoom in 852 // or out. 853 mZoomButtonsController.setZoomInEnabled(canZoomIn); 854 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 855 } 856 } 857 858 private void init() { 859 setWillNotDraw(false); 860 setFocusable(true); 861 setFocusableInTouchMode(true); 862 setClickable(true); 863 setLongClickable(true); 864 865 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 866 int slop = configuration.getScaledTouchSlop(); 867 mTouchSlopSquare = slop * slop; 868 mMinLockSnapReverseDistance = slop; 869 slop = configuration.getScaledDoubleTapSlop(); 870 mDoubleTapSlopSquare = slop * slop; 871 final float density = getContext().getResources().getDisplayMetrics().density; 872 // use one line height, 16 based on our current default font, for how 873 // far we allow a touch be away from the edge of a link 874 mNavSlop = (int) (16 * density); 875 // density adjusted scale factors 876 DEFAULT_SCALE_PERCENT = (int) (100 * density); 877 mDefaultScale = density; 878 mActualScale = density; 879 mInvActualScale = 1 / density; 880 mTextWrapScale = density; 881 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 882 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 883 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 884 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 885 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 886 } 887 888 /* package */void updateDefaultZoomDensity(int zoomDensity) { 889 final float density = getContext().getResources().getDisplayMetrics().density 890 * 100 / zoomDensity; 891 if (Math.abs(density - mDefaultScale) > 0.01) { 892 float scaleFactor = density / mDefaultScale; 893 // adjust the limits 894 mNavSlop = (int) (16 * density); 895 DEFAULT_SCALE_PERCENT = (int) (100 * density); 896 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 897 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 898 mDefaultScale = density; 899 mMaxZoomScale *= scaleFactor; 900 mMinZoomScale *= scaleFactor; 901 setNewZoomScale(mActualScale * scaleFactor, true, false); 902 } 903 } 904 905 /* package */ boolean onSavePassword(String schemePlusHost, String username, 906 String password, final Message resumeMsg) { 907 boolean rVal = false; 908 if (resumeMsg == null) { 909 // null resumeMsg implies saving password silently 910 mDatabase.setUsernamePassword(schemePlusHost, username, password); 911 } else { 912 final Message remember = mPrivateHandler.obtainMessage( 913 REMEMBER_PASSWORD); 914 remember.getData().putString("host", schemePlusHost); 915 remember.getData().putString("username", username); 916 remember.getData().putString("password", password); 917 remember.obj = resumeMsg; 918 919 final Message neverRemember = mPrivateHandler.obtainMessage( 920 NEVER_REMEMBER_PASSWORD); 921 neverRemember.getData().putString("host", schemePlusHost); 922 neverRemember.getData().putString("username", username); 923 neverRemember.getData().putString("password", password); 924 neverRemember.obj = resumeMsg; 925 926 new AlertDialog.Builder(getContext()) 927 .setTitle(com.android.internal.R.string.save_password_label) 928 .setMessage(com.android.internal.R.string.save_password_message) 929 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 930 new DialogInterface.OnClickListener() { 931 public void onClick(DialogInterface dialog, int which) { 932 resumeMsg.sendToTarget(); 933 } 934 }) 935 .setNeutralButton(com.android.internal.R.string.save_password_remember, 936 new DialogInterface.OnClickListener() { 937 public void onClick(DialogInterface dialog, int which) { 938 remember.sendToTarget(); 939 } 940 }) 941 .setNegativeButton(com.android.internal.R.string.save_password_never, 942 new DialogInterface.OnClickListener() { 943 public void onClick(DialogInterface dialog, int which) { 944 neverRemember.sendToTarget(); 945 } 946 }) 947 .setOnCancelListener(new OnCancelListener() { 948 public void onCancel(DialogInterface dialog) { 949 resumeMsg.sendToTarget(); 950 } 951 }).show(); 952 // Return true so that WebViewCore will pause while the dialog is 953 // up. 954 rVal = true; 955 } 956 return rVal; 957 } 958 959 @Override 960 public void setScrollBarStyle(int style) { 961 if (style == View.SCROLLBARS_INSIDE_INSET 962 || style == View.SCROLLBARS_OUTSIDE_INSET) { 963 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 964 } else { 965 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 966 } 967 super.setScrollBarStyle(style); 968 } 969 970 /** 971 * Specify whether the horizontal scrollbar has overlay style. 972 * @param overlay TRUE if horizontal scrollbar should have overlay style. 973 */ 974 public void setHorizontalScrollbarOverlay(boolean overlay) { 975 mOverlayHorizontalScrollbar = overlay; 976 } 977 978 /** 979 * Specify whether the vertical scrollbar has overlay style. 980 * @param overlay TRUE if vertical scrollbar should have overlay style. 981 */ 982 public void setVerticalScrollbarOverlay(boolean overlay) { 983 mOverlayVerticalScrollbar = overlay; 984 } 985 986 /** 987 * Return whether horizontal scrollbar has overlay style 988 * @return TRUE if horizontal scrollbar has overlay style. 989 */ 990 public boolean overlayHorizontalScrollbar() { 991 return mOverlayHorizontalScrollbar; 992 } 993 994 /** 995 * Return whether vertical scrollbar has overlay style 996 * @return TRUE if vertical scrollbar has overlay style. 997 */ 998 public boolean overlayVerticalScrollbar() { 999 return mOverlayVerticalScrollbar; 1000 } 1001 1002 /* 1003 * Return the width of the view where the content of WebView should render 1004 * to. 1005 * Note: this can be called from WebCoreThread. 1006 */ 1007 /* package */ int getViewWidth() { 1008 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1009 return getWidth(); 1010 } else { 1011 return getWidth() - getVerticalScrollbarWidth(); 1012 } 1013 } 1014 1015 /* 1016 * returns the height of the titlebarview (if any). Does not care about 1017 * scrolling 1018 */ 1019 private int getTitleHeight() { 1020 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1021 } 1022 1023 /* 1024 * Return the amount of the titlebarview (if any) that is visible 1025 */ 1026 private int getVisibleTitleHeight() { 1027 return Math.max(getTitleHeight() - mScrollY, 0); 1028 } 1029 1030 /* 1031 * Return the height of the view where the content of WebView should render 1032 * to. Note that this excludes mTitleBar, if there is one. 1033 * Note: this can be called from WebCoreThread. 1034 */ 1035 /* package */ int getViewHeight() { 1036 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1037 } 1038 1039 private int getViewHeightWithTitle() { 1040 int height = getHeight(); 1041 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1042 height -= getHorizontalScrollbarHeight(); 1043 } 1044 return height; 1045 } 1046 1047 /** 1048 * @return The SSL certificate for the main top-level page or null if 1049 * there is no certificate (the site is not secure). 1050 */ 1051 public SslCertificate getCertificate() { 1052 return mCertificate; 1053 } 1054 1055 /** 1056 * Sets the SSL certificate for the main top-level page. 1057 */ 1058 public void setCertificate(SslCertificate certificate) { 1059 // here, the certificate can be null (if the site is not secure) 1060 mCertificate = certificate; 1061 } 1062 1063 //------------------------------------------------------------------------- 1064 // Methods called by activity 1065 //------------------------------------------------------------------------- 1066 1067 /** 1068 * Save the username and password for a particular host in the WebView's 1069 * internal database. 1070 * @param host The host that required the credentials. 1071 * @param username The username for the given host. 1072 * @param password The password for the given host. 1073 */ 1074 public void savePassword(String host, String username, String password) { 1075 mDatabase.setUsernamePassword(host, username, password); 1076 } 1077 1078 /** 1079 * Set the HTTP authentication credentials for a given host and realm. 1080 * 1081 * @param host The host for the credentials. 1082 * @param realm The realm for the credentials. 1083 * @param username The username for the password. If it is null, it means 1084 * password can't be saved. 1085 * @param password The password 1086 */ 1087 public void setHttpAuthUsernamePassword(String host, String realm, 1088 String username, String password) { 1089 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1090 } 1091 1092 /** 1093 * Retrieve the HTTP authentication username and password for a given 1094 * host & realm pair 1095 * 1096 * @param host The host for which the credentials apply. 1097 * @param realm The realm for which the credentials apply. 1098 * @return String[] if found, String[0] is username, which can be null and 1099 * String[1] is password. Return null if it can't find anything. 1100 */ 1101 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1102 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1103 } 1104 1105 /** 1106 * Destroy the internal state of the WebView. This method should be called 1107 * after the WebView has been removed from the view system. No other 1108 * methods may be called on a WebView after destroy. 1109 */ 1110 public void destroy() { 1111 clearTextEntry(false); 1112 if (mWebViewCore != null) { 1113 // Set the handlers to null before destroying WebViewCore so no 1114 // more messages will be posted. 1115 mCallbackProxy.setWebViewClient(null); 1116 mCallbackProxy.setWebChromeClient(null); 1117 // Tell WebViewCore to destroy itself 1118 WebViewCore webViewCore = mWebViewCore; 1119 mWebViewCore = null; // prevent using partial webViewCore 1120 webViewCore.destroy(); 1121 // Remove any pending messages that might not be serviced yet. 1122 mPrivateHandler.removeCallbacksAndMessages(null); 1123 mCallbackProxy.removeCallbacksAndMessages(null); 1124 // Wake up the WebCore thread just in case it is waiting for a 1125 // javascript dialog. 1126 synchronized (mCallbackProxy) { 1127 mCallbackProxy.notify(); 1128 } 1129 } 1130 if (mNativeClass != 0) { 1131 nativeDestroy(); 1132 mNativeClass = 0; 1133 } 1134 } 1135 1136 /** 1137 * Enables platform notifications of data state and proxy changes. 1138 */ 1139 public static void enablePlatformNotifications() { 1140 Network.enablePlatformNotifications(); 1141 } 1142 1143 /** 1144 * If platform notifications are enabled, this should be called 1145 * from the Activity's onPause() or onStop(). 1146 */ 1147 public static void disablePlatformNotifications() { 1148 Network.disablePlatformNotifications(); 1149 } 1150 1151 /** 1152 * Sets JavaScript engine flags. 1153 * 1154 * @param flags JS engine flags in a String 1155 * 1156 * @hide pending API solidification 1157 */ 1158 public void setJsFlags(String flags) { 1159 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1160 } 1161 1162 /** 1163 * Inform WebView of the network state. This is used to set 1164 * the javascript property window.navigator.isOnline and 1165 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1166 * @param networkUp boolean indicating if network is available 1167 */ 1168 public void setNetworkAvailable(boolean networkUp) { 1169 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1170 networkUp ? 1 : 0, 0); 1171 } 1172 1173 /** 1174 * Inform WebView about the current network type. 1175 * {@hide} 1176 */ 1177 public void setNetworkType(String type, String subtype) { 1178 Map<String, String> map = new HashMap<String, String>(); 1179 map.put("type", type); 1180 map.put("subtype", subtype); 1181 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1182 } 1183 /** 1184 * Save the state of this WebView used in 1185 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1186 * method no longer stores the display data for this WebView. The previous 1187 * behavior could potentially leak files if {@link #restoreState} was never 1188 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1189 * and restoring the display data. 1190 * @param outState The Bundle to store the WebView state. 1191 * @return The same copy of the back/forward list used to save the state. If 1192 * saveState fails, the returned list will be null. 1193 * @see #savePicture 1194 * @see #restorePicture 1195 */ 1196 public WebBackForwardList saveState(Bundle outState) { 1197 if (outState == null) { 1198 return null; 1199 } 1200 // We grab a copy of the back/forward list because a client of WebView 1201 // may have invalidated the history list by calling clearHistory. 1202 WebBackForwardList list = copyBackForwardList(); 1203 final int currentIndex = list.getCurrentIndex(); 1204 final int size = list.getSize(); 1205 // We should fail saving the state if the list is empty or the index is 1206 // not in a valid range. 1207 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1208 return null; 1209 } 1210 outState.putInt("index", currentIndex); 1211 // FIXME: This should just be a byte[][] instead of ArrayList but 1212 // Parcel.java does not have the code to handle multi-dimensional 1213 // arrays. 1214 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1215 for (int i = 0; i < size; i++) { 1216 WebHistoryItem item = list.getItemAtIndex(i); 1217 if (null == item) { 1218 // FIXME: this shouldn't happen 1219 // need to determine how item got set to null 1220 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1221 return null; 1222 } 1223 byte[] data = item.getFlattenedData(); 1224 if (data == null) { 1225 // It would be very odd to not have any data for a given history 1226 // item. And we will fail to rebuild the history list without 1227 // flattened data. 1228 return null; 1229 } 1230 history.add(data); 1231 } 1232 outState.putSerializable("history", history); 1233 if (mCertificate != null) { 1234 outState.putBundle("certificate", 1235 SslCertificate.saveState(mCertificate)); 1236 } 1237 return list; 1238 } 1239 1240 /** 1241 * Save the current display data to the Bundle given. Used in conjunction 1242 * with {@link #saveState}. 1243 * @param b A Bundle to store the display data. 1244 * @param dest The file to store the serialized picture data. Will be 1245 * overwritten with this WebView's picture data. 1246 * @return True if the picture was successfully saved. 1247 */ 1248 public boolean savePicture(Bundle b, File dest) { 1249 if (dest == null || b == null) { 1250 return false; 1251 } 1252 final Picture p = capturePicture(); 1253 try { 1254 final FileOutputStream out = new FileOutputStream(dest); 1255 p.writeToStream(out); 1256 out.close(); 1257 } catch (FileNotFoundException e){ 1258 e.printStackTrace(); 1259 } catch (IOException e) { 1260 e.printStackTrace(); 1261 } catch (RuntimeException e) { 1262 e.printStackTrace(); 1263 } 1264 if (dest.length() > 0) { 1265 b.putInt("scrollX", mScrollX); 1266 b.putInt("scrollY", mScrollY); 1267 b.putFloat("scale", mActualScale); 1268 b.putFloat("textwrapScale", mTextWrapScale); 1269 b.putBoolean("overview", mInZoomOverview); 1270 return true; 1271 } 1272 return false; 1273 } 1274 1275 /** 1276 * Restore the display data that was save in {@link #savePicture}. Used in 1277 * conjunction with {@link #restoreState}. 1278 * @param b A Bundle containing the saved display data. 1279 * @param src The file where the picture data was stored. 1280 * @return True if the picture was successfully restored. 1281 */ 1282 public boolean restorePicture(Bundle b, File src) { 1283 if (src == null || b == null) { 1284 return false; 1285 } 1286 if (src.exists()) { 1287 Picture p = null; 1288 try { 1289 final FileInputStream in = new FileInputStream(src); 1290 p = Picture.createFromStream(in); 1291 in.close(); 1292 } catch (FileNotFoundException e){ 1293 e.printStackTrace(); 1294 } catch (RuntimeException e) { 1295 e.printStackTrace(); 1296 } catch (IOException e) { 1297 e.printStackTrace(); 1298 } 1299 if (p != null) { 1300 int sx = b.getInt("scrollX", 0); 1301 int sy = b.getInt("scrollY", 0); 1302 float scale = b.getFloat("scale", 1.0f); 1303 mDrawHistory = true; 1304 mHistoryPicture = p; 1305 mScrollX = sx; 1306 mScrollY = sy; 1307 mHistoryWidth = Math.round(p.getWidth() * scale); 1308 mHistoryHeight = Math.round(p.getHeight() * scale); 1309 // as getWidth() / getHeight() of the view are not 1310 // available yet, set up mActualScale, so that when 1311 // onSizeChanged() is called, the rest will be set 1312 // correctly 1313 mActualScale = scale; 1314 mInvActualScale = 1 / scale; 1315 mTextWrapScale = b.getFloat("textwrapScale", scale); 1316 mInZoomOverview = b.getBoolean("overview"); 1317 invalidate(); 1318 return true; 1319 } 1320 } 1321 return false; 1322 } 1323 1324 /** 1325 * Restore the state of this WebView from the given map used in 1326 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1327 * be called to restore the state of the WebView before using the object. If 1328 * it is called after the WebView has had a chance to build state (load 1329 * pages, create a back/forward list, etc.) there may be undesirable 1330 * side-effects. Please note that this method no longer restores the 1331 * display data for this WebView. See {@link #savePicture} and {@link 1332 * #restorePicture} for saving and restoring the display data. 1333 * @param inState The incoming Bundle of state. 1334 * @return The restored back/forward list or null if restoreState failed. 1335 * @see #savePicture 1336 * @see #restorePicture 1337 */ 1338 public WebBackForwardList restoreState(Bundle inState) { 1339 WebBackForwardList returnList = null; 1340 if (inState == null) { 1341 return returnList; 1342 } 1343 if (inState.containsKey("index") && inState.containsKey("history")) { 1344 mCertificate = SslCertificate.restoreState( 1345 inState.getBundle("certificate")); 1346 1347 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1348 final int index = inState.getInt("index"); 1349 // We can't use a clone of the list because we need to modify the 1350 // shared copy, so synchronize instead to prevent concurrent 1351 // modifications. 1352 synchronized (list) { 1353 final List<byte[]> history = 1354 (List<byte[]>) inState.getSerializable("history"); 1355 final int size = history.size(); 1356 // Check the index bounds so we don't crash in native code while 1357 // restoring the history index. 1358 if (index < 0 || index >= size) { 1359 return null; 1360 } 1361 for (int i = 0; i < size; i++) { 1362 byte[] data = history.remove(0); 1363 if (data == null) { 1364 // If we somehow have null data, we cannot reconstruct 1365 // the item and thus our history list cannot be rebuilt. 1366 return null; 1367 } 1368 WebHistoryItem item = new WebHistoryItem(data); 1369 list.addHistoryItem(item); 1370 } 1371 // Grab the most recent copy to return to the caller. 1372 returnList = copyBackForwardList(); 1373 // Update the copy to have the correct index. 1374 returnList.setCurrentIndex(index); 1375 } 1376 // Remove all pending messages because we are restoring previous 1377 // state. 1378 mWebViewCore.removeMessages(); 1379 // Send a restore state message. 1380 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1381 } 1382 return returnList; 1383 } 1384 1385 /** 1386 * Load the given url with the extra headers. 1387 * @param url The url of the resource to load. 1388 * @param extraHeaders The extra headers sent with this url. This should not 1389 * include the common headers like "user-agent". If it does, it 1390 * will be replaced by the intrinsic value of the WebView. 1391 */ 1392 public void loadUrl(String url, Map<String, String> extraHeaders) { 1393 switchOutDrawHistory(); 1394 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1395 arg.mUrl = url; 1396 arg.mExtraHeaders = extraHeaders; 1397 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1398 clearTextEntry(false); 1399 } 1400 1401 /** 1402 * Load the given url. 1403 * @param url The url of the resource to load. 1404 */ 1405 public void loadUrl(String url) { 1406 if (url == null) { 1407 return; 1408 } 1409 loadUrl(url, null); 1410 } 1411 1412 /** 1413 * Load the url with postData using "POST" method into the WebView. If url 1414 * is not a network url, it will be loaded with {link 1415 * {@link #loadUrl(String)} instead. 1416 * 1417 * @param url The url of the resource to load. 1418 * @param postData The data will be passed to "POST" request. 1419 */ 1420 public void postUrl(String url, byte[] postData) { 1421 if (URLUtil.isNetworkUrl(url)) { 1422 switchOutDrawHistory(); 1423 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1424 arg.mUrl = url; 1425 arg.mPostData = postData; 1426 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1427 clearTextEntry(false); 1428 } else { 1429 loadUrl(url); 1430 } 1431 } 1432 1433 /** 1434 * Load the given data into the WebView. This will load the data into 1435 * WebView using the data: scheme. Content loaded through this mechanism 1436 * does not have the ability to load content from the network. 1437 * @param data A String of data in the given encoding. 1438 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1439 * @param encoding The encoding of the data. i.e. utf-8, base64 1440 */ 1441 public void loadData(String data, String mimeType, String encoding) { 1442 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1443 } 1444 1445 /** 1446 * Load the given data into the WebView, use the provided URL as the base 1447 * URL for the content. The base URL is the URL that represents the page 1448 * that is loaded through this interface. As such, it is used for the 1449 * history entry and to resolve any relative URLs. The failUrl is used if 1450 * browser fails to load the data provided. If it is empty or null, and the 1451 * load fails, then no history entry is created. 1452 * <p> 1453 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1454 * files through "file:///android_asset/" for the sub resources is more 1455 * restricted. If you provide null or empty string as baseUrl, you won't be 1456 * able to access asset files. If the baseUrl is anything other than 1457 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1458 * sub resources. 1459 * 1460 * @param baseUrl Url to resolve relative paths with, if null defaults to 1461 * "about:blank" 1462 * @param data A String of data in the given encoding. 1463 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1464 * defaults to "text/html" 1465 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1466 * @param failUrl URL to use if the content fails to load or null. 1467 */ 1468 public void loadDataWithBaseURL(String baseUrl, String data, 1469 String mimeType, String encoding, String failUrl) { 1470 1471 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1472 loadData(data, mimeType, encoding); 1473 return; 1474 } 1475 switchOutDrawHistory(); 1476 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1477 arg.mBaseUrl = baseUrl; 1478 arg.mData = data; 1479 arg.mMimeType = mimeType; 1480 arg.mEncoding = encoding; 1481 arg.mFailUrl = failUrl; 1482 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1483 clearTextEntry(false); 1484 } 1485 1486 /** 1487 * Stop the current load. 1488 */ 1489 public void stopLoading() { 1490 // TODO: should we clear all the messages in the queue before sending 1491 // STOP_LOADING? 1492 switchOutDrawHistory(); 1493 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1494 } 1495 1496 /** 1497 * Reload the current url. 1498 */ 1499 public void reload() { 1500 clearTextEntry(false); 1501 switchOutDrawHistory(); 1502 mWebViewCore.sendMessage(EventHub.RELOAD); 1503 } 1504 1505 /** 1506 * Return true if this WebView has a back history item. 1507 * @return True iff this WebView has a back history item. 1508 */ 1509 public boolean canGoBack() { 1510 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1511 synchronized (l) { 1512 if (l.getClearPending()) { 1513 return false; 1514 } else { 1515 return l.getCurrentIndex() > 0; 1516 } 1517 } 1518 } 1519 1520 /** 1521 * Go back in the history of this WebView. 1522 */ 1523 public void goBack() { 1524 goBackOrForward(-1); 1525 } 1526 1527 /** 1528 * Return true if this WebView has a forward history item. 1529 * @return True iff this Webview has a forward history item. 1530 */ 1531 public boolean canGoForward() { 1532 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1533 synchronized (l) { 1534 if (l.getClearPending()) { 1535 return false; 1536 } else { 1537 return l.getCurrentIndex() < l.getSize() - 1; 1538 } 1539 } 1540 } 1541 1542 /** 1543 * Go forward in the history of this WebView. 1544 */ 1545 public void goForward() { 1546 goBackOrForward(1); 1547 } 1548 1549 /** 1550 * Return true if the page can go back or forward the given 1551 * number of steps. 1552 * @param steps The negative or positive number of steps to move the 1553 * history. 1554 */ 1555 public boolean canGoBackOrForward(int steps) { 1556 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1557 synchronized (l) { 1558 if (l.getClearPending()) { 1559 return false; 1560 } else { 1561 int newIndex = l.getCurrentIndex() + steps; 1562 return newIndex >= 0 && newIndex < l.getSize(); 1563 } 1564 } 1565 } 1566 1567 /** 1568 * Go to the history item that is the number of steps away from 1569 * the current item. Steps is negative if backward and positive 1570 * if forward. 1571 * @param steps The number of steps to take back or forward in the back 1572 * forward list. 1573 */ 1574 public void goBackOrForward(int steps) { 1575 goBackOrForward(steps, false); 1576 } 1577 1578 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1579 // every time we go back or forward, we want to reset the 1580 // WebView certificate: 1581 // if the new site is secure, we will reload it and get a 1582 // new certificate set; 1583 // if the new site is not secure, the certificate must be 1584 // null, and that will be the case 1585 mCertificate = null; 1586 if (steps != 0) { 1587 clearTextEntry(false); 1588 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1589 ignoreSnapshot ? 1 : 0); 1590 } 1591 } 1592 1593 private boolean extendScroll(int y) { 1594 int finalY = mScroller.getFinalY(); 1595 int newY = pinLocY(finalY + y); 1596 if (newY == finalY) return false; 1597 mScroller.setFinalY(newY); 1598 mScroller.extendDuration(computeDuration(0, y)); 1599 return true; 1600 } 1601 1602 /** 1603 * Scroll the contents of the view up by half the view size 1604 * @param top true to jump to the top of the page 1605 * @return true if the page was scrolled 1606 */ 1607 public boolean pageUp(boolean top) { 1608 if (mNativeClass == 0) { 1609 return false; 1610 } 1611 nativeClearCursor(); // start next trackball movement from page edge 1612 if (top) { 1613 // go to the top of the document 1614 return pinScrollTo(mScrollX, 0, true, 0); 1615 } 1616 // Page up 1617 int h = getHeight(); 1618 int y; 1619 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1620 y = -h + PAGE_SCROLL_OVERLAP; 1621 } else { 1622 y = -h / 2; 1623 } 1624 mUserScroll = true; 1625 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1626 : extendScroll(y); 1627 } 1628 1629 /** 1630 * Scroll the contents of the view down by half the page size 1631 * @param bottom true to jump to bottom of page 1632 * @return true if the page was scrolled 1633 */ 1634 public boolean pageDown(boolean bottom) { 1635 if (mNativeClass == 0) { 1636 return false; 1637 } 1638 nativeClearCursor(); // start next trackball movement from page edge 1639 if (bottom) { 1640 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1641 } 1642 // Page down. 1643 int h = getHeight(); 1644 int y; 1645 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1646 y = h - PAGE_SCROLL_OVERLAP; 1647 } else { 1648 y = h / 2; 1649 } 1650 mUserScroll = true; 1651 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1652 : extendScroll(y); 1653 } 1654 1655 /** 1656 * Clear the view so that onDraw() will draw nothing but white background, 1657 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1658 */ 1659 public void clearView() { 1660 mContentWidth = 0; 1661 mContentHeight = 0; 1662 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1663 } 1664 1665 /** 1666 * Return a new picture that captures the current display of the webview. 1667 * This is a copy of the display, and will be unaffected if the webview 1668 * later loads a different URL. 1669 * 1670 * @return a picture containing the current contents of the view. Note this 1671 * picture is of the entire document, and is not restricted to the 1672 * bounds of the view. 1673 */ 1674 public Picture capturePicture() { 1675 if (null == mWebViewCore) return null; // check for out of memory tab 1676 return mWebViewCore.copyContentPicture(); 1677 } 1678 1679 /** 1680 * Return true if the browser is displaying a TextView for text input. 1681 */ 1682 private boolean inEditingMode() { 1683 return mWebTextView != null && mWebTextView.getParent() != null 1684 && mWebTextView.hasFocus(); 1685 } 1686 1687 /** 1688 * Remove the WebTextView. 1689 * @param disableFocusController If true, send a message to webkit 1690 * disabling the focus controller, so the caret stops blinking. 1691 */ 1692 private void clearTextEntry(boolean disableFocusController) { 1693 if (inEditingMode()) { 1694 mWebTextView.remove(); 1695 if (disableFocusController) { 1696 setFocusControllerInactive(); 1697 } 1698 } 1699 } 1700 1701 /** 1702 * Return the current scale of the WebView 1703 * @return The current scale. 1704 */ 1705 public float getScale() { 1706 return mActualScale; 1707 } 1708 1709 /** 1710 * Set the initial scale for the WebView. 0 means default. If 1711 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1712 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1713 * WebView starts will this value as initial scale. 1714 * 1715 * @param scaleInPercent The initial scale in percent. 1716 */ 1717 public void setInitialScale(int scaleInPercent) { 1718 mInitialScaleInPercent = scaleInPercent; 1719 } 1720 1721 /** 1722 * Invoke the graphical zoom picker widget for this WebView. This will 1723 * result in the zoom widget appearing on the screen to control the zoom 1724 * level of this WebView. 1725 */ 1726 public void invokeZoomPicker() { 1727 if (!getSettings().supportZoom()) { 1728 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1729 return; 1730 } 1731 clearTextEntry(false); 1732 if (getSettings().getBuiltInZoomControls()) { 1733 mZoomButtonsController.setVisible(true); 1734 } else { 1735 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1736 mPrivateHandler.postDelayed(mZoomControlRunnable, 1737 ZOOM_CONTROLS_TIMEOUT); 1738 } 1739 } 1740 1741 /** 1742 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1743 * is found and the anchor has a non-javascript url, the HitTestResult type 1744 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1745 * anchor does not have a url or if it is a javascript url, the type will 1746 * be UNKNOWN_TYPE and the url has to be retrieved through 1747 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1748 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1749 * the "extra" field. A type of 1750 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1751 * a child node. If a phone number is found, the HitTestResult type is set 1752 * to PHONE_TYPE and the phone number is set in the "extra" field of 1753 * HitTestResult. If a map address is found, the HitTestResult type is set 1754 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1755 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1756 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1757 * HitTestResult type is set to UNKNOWN_TYPE. 1758 */ 1759 public HitTestResult getHitTestResult() { 1760 if (mNativeClass == 0) { 1761 return null; 1762 } 1763 1764 HitTestResult result = new HitTestResult(); 1765 if (nativeHasCursorNode()) { 1766 if (nativeCursorIsTextInput()) { 1767 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1768 } else { 1769 String text = nativeCursorText(); 1770 if (text != null) { 1771 if (text.startsWith(SCHEME_TEL)) { 1772 result.setType(HitTestResult.PHONE_TYPE); 1773 result.setExtra(text.substring(SCHEME_TEL.length())); 1774 } else if (text.startsWith(SCHEME_MAILTO)) { 1775 result.setType(HitTestResult.EMAIL_TYPE); 1776 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1777 } else if (text.startsWith(SCHEME_GEO)) { 1778 result.setType(HitTestResult.GEO_TYPE); 1779 result.setExtra(URLDecoder.decode(text 1780 .substring(SCHEME_GEO.length()))); 1781 } else if (nativeCursorIsAnchor()) { 1782 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1783 result.setExtra(text); 1784 } 1785 } 1786 } 1787 } 1788 int type = result.getType(); 1789 if (type == HitTestResult.UNKNOWN_TYPE 1790 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1791 // Now check to see if it is an image. 1792 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1793 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1794 String text = nativeImageURI(contentX, contentY); 1795 if (text != null) { 1796 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1797 HitTestResult.IMAGE_TYPE : 1798 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1799 result.setExtra(text); 1800 } 1801 } 1802 return result; 1803 } 1804 1805 // Called by JNI when the DOM has changed the focus. Clear the focus so 1806 // that new keys will go to the newly focused field 1807 private void domChangedFocus() { 1808 if (inEditingMode()) { 1809 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 1810 } 1811 } 1812 /** 1813 * Request the href of an anchor element due to getFocusNodePath returning 1814 * "href." If hrefMsg is null, this method returns immediately and does not 1815 * dispatch hrefMsg to its target. 1816 * 1817 * @param hrefMsg This message will be dispatched with the result of the 1818 * request as the data member with "url" as key. The result can 1819 * be null. 1820 */ 1821 // FIXME: API change required to change the name of this function. We now 1822 // look at the cursor node, and not the focus node. Also, what is 1823 // getFocusNodePath? 1824 public void requestFocusNodeHref(Message hrefMsg) { 1825 if (hrefMsg == null || mNativeClass == 0) { 1826 return; 1827 } 1828 if (nativeCursorIsAnchor()) { 1829 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1830 nativeCursorFramePointer(), nativeCursorNodePointer(), 1831 hrefMsg); 1832 } 1833 } 1834 1835 /** 1836 * Request the url of the image last touched by the user. msg will be sent 1837 * to its target with a String representing the url as its object. 1838 * 1839 * @param msg This message will be dispatched with the result of the request 1840 * as the data member with "url" as key. The result can be null. 1841 */ 1842 public void requestImageRef(Message msg) { 1843 if (0 == mNativeClass) return; // client isn't initialized 1844 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1845 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1846 String ref = nativeImageURI(contentX, contentY); 1847 Bundle data = msg.getData(); 1848 data.putString("url", ref); 1849 msg.setData(data); 1850 msg.sendToTarget(); 1851 } 1852 1853 private static int pinLoc(int x, int viewMax, int docMax) { 1854// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1855 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1856 // pin the short document to the top/left of the screen 1857 x = 0; 1858// Log.d(LOGTAG, "--- center " + x); 1859 } else if (x < 0) { 1860 x = 0; 1861// Log.d(LOGTAG, "--- zero"); 1862 } else if (x + viewMax > docMax) { 1863 x = docMax - viewMax; 1864// Log.d(LOGTAG, "--- pin " + x); 1865 } 1866 return x; 1867 } 1868 1869 // Expects x in view coordinates 1870 private int pinLocX(int x) { 1871 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1872 } 1873 1874 // Expects y in view coordinates 1875 private int pinLocY(int y) { 1876 int titleH = getTitleHeight(); 1877 // if the titlebar is still visible, just pin against 0 1878 if (y <= titleH) { 1879 return Math.max(y, 0); 1880 } 1881 // convert to 0-based coordinate (subtract the title height) 1882 // pin(), and then add the title height back in 1883 return pinLoc(y - titleH, getViewHeight(), 1884 computeVerticalScrollRange()) + titleH; 1885 } 1886 1887 /** 1888 * A title bar which is embedded in this WebView, and scrolls along with it 1889 * vertically, but not horizontally. 1890 */ 1891 private View mTitleBar; 1892 1893 /** 1894 * Since we draw the title bar ourselves, we removed the shadow from the 1895 * browser's activity. We do want a shadow at the bottom of the title bar, 1896 * or at the top of the screen if the title bar is not visible. This 1897 * drawable serves that purpose. 1898 */ 1899 private Drawable mTitleShadow; 1900 1901 /** 1902 * Add or remove a title bar to be embedded into the WebView, and scroll 1903 * along with it vertically, while remaining in view horizontally. Pass 1904 * null to remove the title bar from the WebView, and return to drawing 1905 * the WebView normally without translating to account for the title bar. 1906 * @hide 1907 */ 1908 public void setEmbeddedTitleBar(View v) { 1909 if (mTitleBar == v) return; 1910 if (mTitleBar != null) { 1911 removeView(mTitleBar); 1912 } 1913 if (null != v) { 1914 addView(v, new AbsoluteLayout.LayoutParams( 1915 ViewGroup.LayoutParams.MATCH_PARENT, 1916 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1917 if (mTitleShadow == null) { 1918 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1919 com.android.internal.R.drawable.title_bar_shadow); 1920 } 1921 } 1922 mTitleBar = v; 1923 } 1924 1925 /** 1926 * Given a distance in view space, convert it to content space. Note: this 1927 * does not reflect translation, just scaling, so this should not be called 1928 * with coordinates, but should be called for dimensions like width or 1929 * height. 1930 */ 1931 private int viewToContentDimension(int d) { 1932 return Math.round(d * mInvActualScale); 1933 } 1934 1935 /** 1936 * Given an x coordinate in view space, convert it to content space. Also 1937 * may be used for absolute heights (such as for the WebTextView's 1938 * textSize, which is unaffected by the height of the title bar). 1939 */ 1940 /*package*/ int viewToContentX(int x) { 1941 return viewToContentDimension(x); 1942 } 1943 1944 /** 1945 * Given a y coordinate in view space, convert it to content space. 1946 * Takes into account the height of the title bar if there is one 1947 * embedded into the WebView. 1948 */ 1949 /*package*/ int viewToContentY(int y) { 1950 return viewToContentDimension(y - getTitleHeight()); 1951 } 1952 1953 /** 1954 * Given a distance in content space, convert it to view space. Note: this 1955 * does not reflect translation, just scaling, so this should not be called 1956 * with coordinates, but should be called for dimensions like width or 1957 * height. 1958 */ 1959 /*package*/ int contentToViewDimension(int d) { 1960 return Math.round(d * mActualScale); 1961 } 1962 1963 /** 1964 * Given an x coordinate in content space, convert it to view 1965 * space. 1966 */ 1967 /*package*/ int contentToViewX(int x) { 1968 return contentToViewDimension(x); 1969 } 1970 1971 /** 1972 * Given a y coordinate in content space, convert it to view 1973 * space. Takes into account the height of the title bar. 1974 */ 1975 /*package*/ int contentToViewY(int y) { 1976 return contentToViewDimension(y) + getTitleHeight(); 1977 } 1978 1979 private Rect contentToViewRect(Rect x) { 1980 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 1981 contentToViewX(x.right), contentToViewY(x.bottom)); 1982 } 1983 1984 /* To invalidate a rectangle in content coordinates, we need to transform 1985 the rect into view coordinates, so we can then call invalidate(...). 1986 1987 Normally, we would just call contentToView[XY](...), which eventually 1988 calls Math.round(coordinate * mActualScale). However, for invalidates, 1989 we need to account for the slop that occurs with antialiasing. To 1990 address that, we are a little more liberal in the size of the rect that 1991 we invalidate. 1992 1993 This liberal calculation calls floor() for the top/left, and ceil() for 1994 the bottom/right coordinates. This catches the possible extra pixels of 1995 antialiasing that we might have missed with just round(). 1996 */ 1997 1998 // Called by JNI to invalidate the View, given rectangle coordinates in 1999 // content space 2000 private void viewInvalidate(int l, int t, int r, int b) { 2001 final float scale = mActualScale; 2002 final int dy = getTitleHeight(); 2003 invalidate((int)Math.floor(l * scale), 2004 (int)Math.floor(t * scale) + dy, 2005 (int)Math.ceil(r * scale), 2006 (int)Math.ceil(b * scale) + dy); 2007 } 2008 2009 // Called by JNI to invalidate the View after a delay, given rectangle 2010 // coordinates in content space 2011 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2012 final float scale = mActualScale; 2013 final int dy = getTitleHeight(); 2014 postInvalidateDelayed(delay, 2015 (int)Math.floor(l * scale), 2016 (int)Math.floor(t * scale) + dy, 2017 (int)Math.ceil(r * scale), 2018 (int)Math.ceil(b * scale) + dy); 2019 } 2020 2021 private void invalidateContentRect(Rect r) { 2022 viewInvalidate(r.left, r.top, r.right, r.bottom); 2023 } 2024 2025 // stop the scroll animation, and don't let a subsequent fling add 2026 // to the existing velocity 2027 private void abortAnimation() { 2028 mScroller.abortAnimation(); 2029 mLastVelocity = 0; 2030 } 2031 2032 /* call from webcoreview.draw(), so we're still executing in the UI thread 2033 */ 2034 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2035 2036 // premature data from webkit, ignore 2037 if ((w | h) == 0) { 2038 return; 2039 } 2040 2041 // don't abort a scroll animation if we didn't change anything 2042 if (mContentWidth != w || mContentHeight != h) { 2043 // record new dimensions 2044 mContentWidth = w; 2045 mContentHeight = h; 2046 // If history Picture is drawn, don't update scroll. They will be 2047 // updated when we get out of that mode. 2048 if (!mDrawHistory) { 2049 // repin our scroll, taking into account the new content size 2050 int oldX = mScrollX; 2051 int oldY = mScrollY; 2052 mScrollX = pinLocX(mScrollX); 2053 mScrollY = pinLocY(mScrollY); 2054 if (oldX != mScrollX || oldY != mScrollY) { 2055 sendOurVisibleRect(); 2056 } 2057 if (!mScroller.isFinished()) { 2058 // We are in the middle of a scroll. Repin the final scroll 2059 // position. 2060 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2061 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2062 } 2063 } 2064 } 2065 contentSizeChanged(updateLayout); 2066 } 2067 2068 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 2069 boolean force) { 2070 if (scale < mMinZoomScale) { 2071 scale = mMinZoomScale; 2072 // set mInZoomOverview for non mobile sites 2073 if (scale < mDefaultScale) mInZoomOverview = true; 2074 } else if (scale > mMaxZoomScale) { 2075 scale = mMaxZoomScale; 2076 } 2077 if (updateTextWrapScale) { 2078 mTextWrapScale = scale; 2079 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 2080 mLastHeightSent = 0; 2081 } 2082 if (scale != mActualScale || force) { 2083 if (mDrawHistory) { 2084 // If history Picture is drawn, don't update scroll. They will 2085 // be updated when we get out of that mode. 2086 if (scale != mActualScale && !mPreviewZoomOnly) { 2087 mCallbackProxy.onScaleChanged(mActualScale, scale); 2088 } 2089 mActualScale = scale; 2090 mInvActualScale = 1 / scale; 2091 sendViewSizeZoom(); 2092 } else { 2093 // update our scroll so we don't appear to jump 2094 // i.e. keep the center of the doc in the center of the view 2095 2096 int oldX = mScrollX; 2097 int oldY = mScrollY; 2098 float ratio = scale * mInvActualScale; // old inverse 2099 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2100 float sy = ratio * oldY + (ratio - 1) 2101 * (mZoomCenterY - getTitleHeight()); 2102 2103 // now update our new scale and inverse 2104 if (scale != mActualScale && !mPreviewZoomOnly) { 2105 mCallbackProxy.onScaleChanged(mActualScale, scale); 2106 } 2107 mActualScale = scale; 2108 mInvActualScale = 1 / scale; 2109 2110 // Scale all the child views 2111 mViewManager.scaleAll(); 2112 2113 // as we don't have animation for scaling, don't do animation 2114 // for scrolling, as it causes weird intermediate state 2115 // pinScrollTo(Math.round(sx), Math.round(sy)); 2116 mScrollX = pinLocX(Math.round(sx)); 2117 mScrollY = pinLocY(Math.round(sy)); 2118 2119 // update webkit 2120 sendViewSizeZoom(); 2121 sendOurVisibleRect(); 2122 } 2123 } 2124 } 2125 2126 // Used to avoid sending many visible rect messages. 2127 private Rect mLastVisibleRectSent; 2128 private Rect mLastGlobalRect; 2129 2130 private Rect sendOurVisibleRect() { 2131 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2132 2133 Rect rect = new Rect(); 2134 calcOurContentVisibleRect(rect); 2135 // Rect.equals() checks for null input. 2136 if (!rect.equals(mLastVisibleRectSent)) { 2137 Point pos = new Point(rect.left, rect.top); 2138 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2139 nativeMoveGeneration(), 0, pos); 2140 mLastVisibleRectSent = rect; 2141 } 2142 Rect globalRect = new Rect(); 2143 if (getGlobalVisibleRect(globalRect) 2144 && !globalRect.equals(mLastGlobalRect)) { 2145 if (DebugFlags.WEB_VIEW) { 2146 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2147 + globalRect.top + ",r=" + globalRect.right + ",b=" 2148 + globalRect.bottom); 2149 } 2150 // TODO: the global offset is only used by windowRect() 2151 // in ChromeClientAndroid ; other clients such as touch 2152 // and mouse events could return view + screen relative points. 2153 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2154 mLastGlobalRect = globalRect; 2155 } 2156 return rect; 2157 } 2158 2159 // Sets r to be the visible rectangle of our webview in view coordinates 2160 private void calcOurVisibleRect(Rect r) { 2161 Point p = new Point(); 2162 getGlobalVisibleRect(r, p); 2163 r.offset(-p.x, -p.y); 2164 if (mFindIsUp) { 2165 r.bottom -= mFindHeight; 2166 } 2167 } 2168 2169 // Sets r to be our visible rectangle in content coordinates 2170 private void calcOurContentVisibleRect(Rect r) { 2171 calcOurVisibleRect(r); 2172 r.left = viewToContentX(r.left); 2173 // viewToContentY will remove the total height of the title bar. Add 2174 // the visible height back in to account for the fact that if the title 2175 // bar is partially visible, the part of the visible rect which is 2176 // displaying our content is displaced by that amount. 2177 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2178 r.right = viewToContentX(r.right); 2179 r.bottom = viewToContentY(r.bottom); 2180 } 2181 2182 static class ViewSizeData { 2183 int mWidth; 2184 int mHeight; 2185 int mTextWrapWidth; 2186 int mAnchorX; 2187 int mAnchorY; 2188 float mScale; 2189 boolean mIgnoreHeight; 2190 } 2191 2192 /** 2193 * Compute unzoomed width and height, and if they differ from the last 2194 * values we sent, send them to webkit (to be used has new viewport) 2195 * 2196 * @return true if new values were sent 2197 */ 2198 private boolean sendViewSizeZoom() { 2199 if (mPreviewZoomOnly) return false; 2200 2201 int viewWidth = getViewWidth(); 2202 int newWidth = Math.round(viewWidth * mInvActualScale); 2203 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2204 /* 2205 * Because the native side may have already done a layout before the 2206 * View system was able to measure us, we have to send a height of 0 to 2207 * remove excess whitespace when we grow our width. This will trigger a 2208 * layout and a change in content size. This content size change will 2209 * mean that contentSizeChanged will either call this method directly or 2210 * indirectly from onSizeChanged. 2211 */ 2212 if (newWidth > mLastWidthSent && mWrapContent) { 2213 newHeight = 0; 2214 } 2215 // Avoid sending another message if the dimensions have not changed. 2216 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2217 ViewSizeData data = new ViewSizeData(); 2218 data.mWidth = newWidth; 2219 data.mHeight = newHeight; 2220 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2221 data.mScale = mActualScale; 2222 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2223 data.mAnchorX = mAnchorX; 2224 data.mAnchorY = mAnchorY; 2225 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2226 mLastWidthSent = newWidth; 2227 mLastHeightSent = newHeight; 2228 mAnchorX = mAnchorY = 0; 2229 return true; 2230 } 2231 return false; 2232 } 2233 2234 @Override 2235 protected int computeHorizontalScrollRange() { 2236 if (mDrawHistory) { 2237 return mHistoryWidth; 2238 } else { 2239 // to avoid rounding error caused unnecessary scrollbar, use floor 2240 return (int) Math.floor(mContentWidth * mActualScale); 2241 } 2242 } 2243 2244 @Override 2245 protected int computeVerticalScrollRange() { 2246 if (mDrawHistory) { 2247 return mHistoryHeight; 2248 } else { 2249 // to avoid rounding error caused unnecessary scrollbar, use floor 2250 return (int) Math.floor(mContentHeight * mActualScale); 2251 } 2252 } 2253 2254 @Override 2255 protected int computeVerticalScrollOffset() { 2256 return Math.max(mScrollY - getTitleHeight(), 0); 2257 } 2258 2259 @Override 2260 protected int computeVerticalScrollExtent() { 2261 return getViewHeight(); 2262 } 2263 2264 /** @hide */ 2265 @Override 2266 protected void onDrawVerticalScrollBar(Canvas canvas, 2267 Drawable scrollBar, 2268 int l, int t, int r, int b) { 2269 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2270 scrollBar.draw(canvas); 2271 } 2272 2273 /** 2274 * Get the url for the current page. This is not always the same as the url 2275 * passed to WebViewClient.onPageStarted because although the load for 2276 * that url has begun, the current page may not have changed. 2277 * @return The url for the current page. 2278 */ 2279 public String getUrl() { 2280 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2281 return h != null ? h.getUrl() : null; 2282 } 2283 2284 /** 2285 * Get the original url for the current page. This is not always the same 2286 * as the url passed to WebViewClient.onPageStarted because although the 2287 * load for that url has begun, the current page may not have changed. 2288 * Also, there may have been redirects resulting in a different url to that 2289 * originally requested. 2290 * @return The url that was originally requested for the current page. 2291 */ 2292 public String getOriginalUrl() { 2293 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2294 return h != null ? h.getOriginalUrl() : null; 2295 } 2296 2297 /** 2298 * Get the title for the current page. This is the title of the current page 2299 * until WebViewClient.onReceivedTitle is called. 2300 * @return The title for the current page. 2301 */ 2302 public String getTitle() { 2303 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2304 return h != null ? h.getTitle() : null; 2305 } 2306 2307 /** 2308 * Get the favicon for the current page. This is the favicon of the current 2309 * page until WebViewClient.onReceivedIcon is called. 2310 * @return The favicon for the current page. 2311 */ 2312 public Bitmap getFavicon() { 2313 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2314 return h != null ? h.getFavicon() : null; 2315 } 2316 2317 /** 2318 * Get the touch icon url for the apple-touch-icon <link> element. 2319 * @hide 2320 */ 2321 public String getTouchIconUrl() { 2322 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2323 return h != null ? h.getTouchIconUrl() : null; 2324 } 2325 2326 /** 2327 * Get the progress for the current page. 2328 * @return The progress for the current page between 0 and 100. 2329 */ 2330 public int getProgress() { 2331 return mCallbackProxy.getProgress(); 2332 } 2333 2334 /** 2335 * @return the height of the HTML content. 2336 */ 2337 public int getContentHeight() { 2338 return mContentHeight; 2339 } 2340 2341 /** 2342 * @return the width of the HTML content. 2343 * @hide 2344 */ 2345 public int getContentWidth() { 2346 return mContentWidth; 2347 } 2348 2349 /** 2350 * Pause all layout, parsing, and javascript timers for all webviews. This 2351 * is a global requests, not restricted to just this webview. This can be 2352 * useful if the application has been paused. 2353 */ 2354 public void pauseTimers() { 2355 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2356 } 2357 2358 /** 2359 * Resume all layout, parsing, and javascript timers for all webviews. 2360 * This will resume dispatching all timers. 2361 */ 2362 public void resumeTimers() { 2363 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2364 } 2365 2366 /** 2367 * Call this to pause any extra processing associated with this view and 2368 * its associated DOM/plugins/javascript/etc. For example, if the view is 2369 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2370 * network traffic. When the view is again "active", call onResume(). 2371 * 2372 * Note that this differs from pauseTimers(), which affects all views/DOMs 2373 * @hide 2374 */ 2375 public void onPause() { 2376 if (!mIsPaused) { 2377 mIsPaused = true; 2378 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2379 } 2380 } 2381 2382 /** 2383 * Call this to balanace a previous call to onPause() 2384 * @hide 2385 */ 2386 public void onResume() { 2387 if (mIsPaused) { 2388 mIsPaused = false; 2389 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2390 } 2391 } 2392 2393 /** 2394 * Returns true if the view is paused, meaning onPause() was called. Calling 2395 * onResume() sets the paused state back to false. 2396 * @hide 2397 */ 2398 public boolean isPaused() { 2399 return mIsPaused; 2400 } 2401 2402 /** 2403 * Call this to inform the view that memory is low so that it can 2404 * free any available memory. 2405 */ 2406 public void freeMemory() { 2407 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2408 } 2409 2410 /** 2411 * Clear the resource cache. Note that the cache is per-application, so 2412 * this will clear the cache for all WebViews used. 2413 * 2414 * @param includeDiskFiles If false, only the RAM cache is cleared. 2415 */ 2416 public void clearCache(boolean includeDiskFiles) { 2417 // Note: this really needs to be a static method as it clears cache for all 2418 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2419 // we can't make this static. 2420 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2421 includeDiskFiles ? 1 : 0, 0); 2422 } 2423 2424 /** 2425 * Make sure that clearing the form data removes the adapter from the 2426 * currently focused textfield if there is one. 2427 */ 2428 public void clearFormData() { 2429 if (inEditingMode()) { 2430 AutoCompleteAdapter adapter = null; 2431 mWebTextView.setAdapterCustom(adapter); 2432 } 2433 } 2434 2435 /** 2436 * Tell the WebView to clear its internal back/forward list. 2437 */ 2438 public void clearHistory() { 2439 mCallbackProxy.getBackForwardList().setClearPending(); 2440 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2441 } 2442 2443 /** 2444 * Clear the SSL preferences table stored in response to proceeding with SSL 2445 * certificate errors. 2446 */ 2447 public void clearSslPreferences() { 2448 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2449 } 2450 2451 /** 2452 * Return the WebBackForwardList for this WebView. This contains the 2453 * back/forward list for use in querying each item in the history stack. 2454 * This is a copy of the private WebBackForwardList so it contains only a 2455 * snapshot of the current state. Multiple calls to this method may return 2456 * different objects. The object returned from this method will not be 2457 * updated to reflect any new state. 2458 */ 2459 public WebBackForwardList copyBackForwardList() { 2460 return mCallbackProxy.getBackForwardList().clone(); 2461 } 2462 2463 /* 2464 * Highlight and scroll to the next occurance of String in findAll. 2465 * Wraps the page infinitely, and scrolls. Must be called after 2466 * calling findAll. 2467 * 2468 * @param forward Direction to search. 2469 */ 2470 public void findNext(boolean forward) { 2471 if (0 == mNativeClass) return; // client isn't initialized 2472 nativeFindNext(forward); 2473 } 2474 2475 /* 2476 * Find all instances of find on the page and highlight them. 2477 * @param find String to find. 2478 * @return int The number of occurances of the String "find" 2479 * that were found. 2480 */ 2481 public int findAll(String find) { 2482 if (0 == mNativeClass) return 0; // client isn't initialized 2483 int result = find != null ? nativeFindAll(find.toLowerCase(), 2484 find.toUpperCase()) : 0; 2485 invalidate(); 2486 mLastFind = find; 2487 return result; 2488 } 2489 2490 /** 2491 * @hide 2492 */ 2493 public void setFindIsUp(boolean isUp) { 2494 mFindIsUp = isUp; 2495 if (isUp) { 2496 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2497 false); 2498 } 2499 if (0 == mNativeClass) return; // client isn't initialized 2500 nativeSetFindIsUp(isUp); 2501 } 2502 2503 // Used to know whether the find dialog is open. Affects whether 2504 // or not we draw the highlights for matches. 2505 private boolean mFindIsUp; 2506 2507 private int mFindHeight; 2508 // Keep track of the last string sent, so we can search again after an 2509 // orientation change or the dismissal of the soft keyboard. 2510 private String mLastFind; 2511 2512 /** 2513 * Return the first substring consisting of the address of a physical 2514 * location. Currently, only addresses in the United States are detected, 2515 * and consist of: 2516 * - a house number 2517 * - a street name 2518 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2519 * - a city name 2520 * - a state or territory, either spelled out or two-letter abbr. 2521 * - an optional 5 digit or 9 digit zip code. 2522 * 2523 * All names must be correctly capitalized, and the zip code, if present, 2524 * must be valid for the state. The street type must be a standard USPS 2525 * spelling or abbreviation. The state or territory must also be spelled 2526 * or abbreviated using USPS standards. The house number may not exceed 2527 * five digits. 2528 * @param addr The string to search for addresses. 2529 * 2530 * @return the address, or if no address is found, return null. 2531 */ 2532 public static String findAddress(String addr) { 2533 return findAddress(addr, false); 2534 } 2535 2536 /** 2537 * @hide 2538 * Return the first substring consisting of the address of a physical 2539 * location. Currently, only addresses in the United States are detected, 2540 * and consist of: 2541 * - a house number 2542 * - a street name 2543 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2544 * - a city name 2545 * - a state or territory, either spelled out or two-letter abbr. 2546 * - an optional 5 digit or 9 digit zip code. 2547 * 2548 * Names are optionally capitalized, and the zip code, if present, 2549 * must be valid for the state. The street type must be a standard USPS 2550 * spelling or abbreviation. The state or territory must also be spelled 2551 * or abbreviated using USPS standards. The house number may not exceed 2552 * five digits. 2553 * @param addr The string to search for addresses. 2554 * @param caseInsensitive addr Set to true to make search ignore case. 2555 * 2556 * @return the address, or if no address is found, return null. 2557 */ 2558 public static String findAddress(String addr, boolean caseInsensitive) { 2559 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2560 } 2561 2562 /* 2563 * Clear the highlighting surrounding text matches created by findAll. 2564 */ 2565 public void clearMatches() { 2566 mLastFind = ""; 2567 if (mNativeClass == 0) 2568 return; 2569 nativeSetFindIsEmpty(); 2570 invalidate(); 2571 } 2572 2573 /** 2574 * @hide 2575 */ 2576 public void notifyFindDialogDismissed() { 2577 clearMatches(); 2578 setFindIsUp(false); 2579 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2580 false); 2581 // Now that the dialog has been removed, ensure that we scroll to a 2582 // location that is not beyond the end of the page. 2583 pinScrollTo(mScrollX, mScrollY, false, 0); 2584 invalidate(); 2585 } 2586 2587 /** 2588 * @hide 2589 */ 2590 public void setFindDialogHeight(int height) { 2591 if (DebugFlags.WEB_VIEW) { 2592 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2593 } 2594 mFindHeight = height; 2595 } 2596 2597 /** 2598 * Query the document to see if it contains any image references. The 2599 * message object will be dispatched with arg1 being set to 1 if images 2600 * were found and 0 if the document does not reference any images. 2601 * @param response The message that will be dispatched with the result. 2602 */ 2603 public void documentHasImages(Message response) { 2604 if (response == null) { 2605 return; 2606 } 2607 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2608 } 2609 2610 @Override 2611 public void computeScroll() { 2612 if (mScroller.computeScrollOffset()) { 2613 int oldX = mScrollX; 2614 int oldY = mScrollY; 2615 mScrollX = mScroller.getCurrX(); 2616 mScrollY = mScroller.getCurrY(); 2617 postInvalidate(); // So we draw again 2618 if (oldX != mScrollX || oldY != mScrollY) { 2619 // as onScrollChanged() is not called, sendOurVisibleRect() 2620 // needs to be call explicitly 2621 sendOurVisibleRect(); 2622 } 2623 } else { 2624 super.computeScroll(); 2625 } 2626 } 2627 2628 private static int computeDuration(int dx, int dy) { 2629 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2630 int duration = distance * 1000 / STD_SPEED; 2631 return Math.min(duration, MAX_DURATION); 2632 } 2633 2634 // helper to pin the scrollBy parameters (already in view coordinates) 2635 // returns true if the scroll was changed 2636 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2637 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2638 } 2639 // helper to pin the scrollTo parameters (already in view coordinates) 2640 // returns true if the scroll was changed 2641 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2642 x = pinLocX(x); 2643 y = pinLocY(y); 2644 int dx = x - mScrollX; 2645 int dy = y - mScrollY; 2646 2647 if ((dx | dy) == 0) { 2648 return false; 2649 } 2650 if (animate) { 2651 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2652 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2653 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2654 awakenScrollBars(mScroller.getDuration()); 2655 invalidate(); 2656 } else { 2657 abortAnimation(); // just in case 2658 scrollTo(x, y); 2659 } 2660 return true; 2661 } 2662 2663 // Scale from content to view coordinates, and pin. 2664 // Also called by jni webview.cpp 2665 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2666 if (mDrawHistory) { 2667 // disallow WebView to change the scroll position as History Picture 2668 // is used in the view system. 2669 // TODO: as we switchOutDrawHistory when trackball or navigation 2670 // keys are hit, this should be safe. Right? 2671 return false; 2672 } 2673 cx = contentToViewDimension(cx); 2674 cy = contentToViewDimension(cy); 2675 if (mHeightCanMeasure) { 2676 // move our visible rect according to scroll request 2677 if (cy != 0) { 2678 Rect tempRect = new Rect(); 2679 calcOurVisibleRect(tempRect); 2680 tempRect.offset(cx, cy); 2681 requestRectangleOnScreen(tempRect); 2682 } 2683 // FIXME: We scroll horizontally no matter what because currently 2684 // ScrollView and ListView will not scroll horizontally. 2685 // FIXME: Why do we only scroll horizontally if there is no 2686 // vertical scroll? 2687// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2688 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2689 } else { 2690 return pinScrollBy(cx, cy, animate, 0); 2691 } 2692 } 2693 2694 /** 2695 * Called by CallbackProxy when the page finishes loading. 2696 * @param url The URL of the page which has finished loading. 2697 */ 2698 /* package */ void onPageFinished(String url) { 2699 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 2700 // If the user is now on a different page, or has scrolled the page 2701 // past the point where the title bar is offscreen, ignore the 2702 // scroll request. 2703 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 2704 && mScrollX == 0 && mScrollY == 0) { 2705 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 2706 SLIDE_TITLE_DURATION); 2707 } 2708 mPageThatNeedsToSlideTitleBarOffScreen = null; 2709 } 2710 } 2711 2712 /** 2713 * The URL of a page that sent a message to scroll the title bar off screen. 2714 * 2715 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 2716 * title bar off the screen. Sometimes, the scroll position is set before 2717 * the page finishes loading. Rather than scrolling while the page is still 2718 * loading, keep track of the URL and new scroll position so we can perform 2719 * the scroll once the page finishes loading. 2720 */ 2721 private String mPageThatNeedsToSlideTitleBarOffScreen; 2722 2723 /** 2724 * The destination Y scroll position to be used when the page finishes 2725 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 2726 */ 2727 private int mYDistanceToSlideTitleOffScreen; 2728 2729 // scale from content to view coordinates, and pin 2730 // return true if pin caused the final x/y different than the request cx/cy, 2731 // and a future scroll may reach the request cx/cy after our size has 2732 // changed 2733 // return false if the view scroll to the exact position as it is requested, 2734 // where negative numbers are taken to mean 0 2735 private boolean setContentScrollTo(int cx, int cy) { 2736 if (mDrawHistory) { 2737 // disallow WebView to change the scroll position as History Picture 2738 // is used in the view system. 2739 // One known case where this is called is that WebCore tries to 2740 // restore the scroll position. As history Picture already uses the 2741 // saved scroll position, it is ok to skip this. 2742 return false; 2743 } 2744 int vx; 2745 int vy; 2746 if ((cx | cy) == 0) { 2747 // If the page is being scrolled to (0,0), do not add in the title 2748 // bar's height, and simply scroll to (0,0). (The only other work 2749 // in contentToView_ is to multiply, so this would not change 0.) 2750 vx = 0; 2751 vy = 0; 2752 } else { 2753 vx = contentToViewX(cx); 2754 vy = contentToViewY(cy); 2755 } 2756// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2757// vx + " " + vy + "]"); 2758 // Some mobile sites attempt to scroll the title bar off the page by 2759 // scrolling to (0,1). If we are at the top left corner of the 2760 // page, assume this is an attempt to scroll off the title bar, and 2761 // animate the title bar off screen slowly enough that the user can see 2762 // it. 2763 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 2764 && mTitleBar != null) { 2765 // FIXME: 100 should be defined somewhere as our max progress. 2766 if (getProgress() < 100) { 2767 // Wait to scroll the title bar off screen until the page has 2768 // finished loading. Keep track of the URL and the destination 2769 // Y position 2770 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 2771 mYDistanceToSlideTitleOffScreen = vy; 2772 } else { 2773 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2774 } 2775 // Since we are animating, we have not yet reached the desired 2776 // scroll position. Do not return true to request another attempt 2777 return false; 2778 } 2779 pinScrollTo(vx, vy, false, 0); 2780 // If the request was to scroll to a negative coordinate, treat it as if 2781 // it was a request to scroll to 0 2782 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2783 return true; 2784 } else { 2785 return false; 2786 } 2787 } 2788 2789 // scale from content to view coordinates, and pin 2790 private void spawnContentScrollTo(int cx, int cy) { 2791 if (mDrawHistory) { 2792 // disallow WebView to change the scroll position as History Picture 2793 // is used in the view system. 2794 return; 2795 } 2796 int vx = contentToViewX(cx); 2797 int vy = contentToViewY(cy); 2798 pinScrollTo(vx, vy, true, 0); 2799 } 2800 2801 /** 2802 * These are from webkit, and are in content coordinate system (unzoomed) 2803 */ 2804 private void contentSizeChanged(boolean updateLayout) { 2805 // suppress 0,0 since we usually see real dimensions soon after 2806 // this avoids drawing the prev content in a funny place. If we find a 2807 // way to consolidate these notifications, this check may become 2808 // obsolete 2809 if ((mContentWidth | mContentHeight) == 0) { 2810 return; 2811 } 2812 2813 if (mHeightCanMeasure) { 2814 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2815 || updateLayout) { 2816 requestLayout(); 2817 } 2818 } else if (mWidthCanMeasure) { 2819 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2820 || updateLayout) { 2821 requestLayout(); 2822 } 2823 } else { 2824 // If we don't request a layout, try to send our view size to the 2825 // native side to ensure that WebCore has the correct dimensions. 2826 sendViewSizeZoom(); 2827 } 2828 } 2829 2830 /** 2831 * Set the WebViewClient that will receive various notifications and 2832 * requests. This will replace the current handler. 2833 * @param client An implementation of WebViewClient. 2834 */ 2835 public void setWebViewClient(WebViewClient client) { 2836 mCallbackProxy.setWebViewClient(client); 2837 } 2838 2839 /** 2840 * Gets the WebViewClient 2841 * @return the current WebViewClient instance. 2842 * 2843 *@hide pending API council approval. 2844 */ 2845 public WebViewClient getWebViewClient() { 2846 return mCallbackProxy.getWebViewClient(); 2847 } 2848 2849 /** 2850 * Register the interface to be used when content can not be handled by 2851 * the rendering engine, and should be downloaded instead. This will replace 2852 * the current handler. 2853 * @param listener An implementation of DownloadListener. 2854 */ 2855 public void setDownloadListener(DownloadListener listener) { 2856 mCallbackProxy.setDownloadListener(listener); 2857 } 2858 2859 /** 2860 * Set the chrome handler. This is an implementation of WebChromeClient for 2861 * use in handling Javascript dialogs, favicons, titles, and the progress. 2862 * This will replace the current handler. 2863 * @param client An implementation of WebChromeClient. 2864 */ 2865 public void setWebChromeClient(WebChromeClient client) { 2866 mCallbackProxy.setWebChromeClient(client); 2867 } 2868 2869 /** 2870 * Gets the chrome handler. 2871 * @return the current WebChromeClient instance. 2872 * 2873 * @hide API council approval. 2874 */ 2875 public WebChromeClient getWebChromeClient() { 2876 return mCallbackProxy.getWebChromeClient(); 2877 } 2878 2879 /** 2880 * Set the back/forward list client. This is an implementation of 2881 * WebBackForwardListClient for handling new items and changes in the 2882 * history index. 2883 * @param client An implementation of WebBackForwardListClient. 2884 * {@hide} 2885 */ 2886 public void setWebBackForwardListClient(WebBackForwardListClient client) { 2887 mCallbackProxy.setWebBackForwardListClient(client); 2888 } 2889 2890 /** 2891 * Gets the WebBackForwardListClient. 2892 * {@hide} 2893 */ 2894 public WebBackForwardListClient getWebBackForwardListClient() { 2895 return mCallbackProxy.getWebBackForwardListClient(); 2896 } 2897 2898 /** 2899 * Set the Picture listener. This is an interface used to receive 2900 * notifications of a new Picture. 2901 * @param listener An implementation of WebView.PictureListener. 2902 */ 2903 public void setPictureListener(PictureListener listener) { 2904 mPictureListener = listener; 2905 } 2906 2907 /** 2908 * {@hide} 2909 */ 2910 /* FIXME: Debug only! Remove for SDK! */ 2911 public void externalRepresentation(Message callback) { 2912 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2913 } 2914 2915 /** 2916 * {@hide} 2917 */ 2918 /* FIXME: Debug only! Remove for SDK! */ 2919 public void documentAsText(Message callback) { 2920 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2921 } 2922 2923 /** 2924 * Use this function to bind an object to Javascript so that the 2925 * methods can be accessed from Javascript. 2926 * <p><strong>IMPORTANT:</strong> 2927 * <ul> 2928 * <li> Using addJavascriptInterface() allows JavaScript to control your 2929 * application. This can be a very useful feature or a dangerous security 2930 * issue. When the HTML in the WebView is untrustworthy (for example, part 2931 * or all of the HTML is provided by some person or process), then an 2932 * attacker could inject HTML that will execute your code and possibly any 2933 * code of the attacker's choosing.<br> 2934 * Do not use addJavascriptInterface() unless all of the HTML in this 2935 * WebView was written by you.</li> 2936 * <li> The Java object that is bound runs in another thread and not in 2937 * the thread that it was constructed in.</li> 2938 * </ul></p> 2939 * @param obj The class instance to bind to Javascript 2940 * @param interfaceName The name to used to expose the class in Javascript 2941 */ 2942 public void addJavascriptInterface(Object obj, String interfaceName) { 2943 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2944 arg.mObject = obj; 2945 arg.mInterfaceName = interfaceName; 2946 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2947 } 2948 2949 /** 2950 * Return the WebSettings object used to control the settings for this 2951 * WebView. 2952 * @return A WebSettings object that can be used to control this WebView's 2953 * settings. 2954 */ 2955 public WebSettings getSettings() { 2956 return mWebViewCore.getSettings(); 2957 } 2958 2959 /** 2960 * Use this method to inform the webview about packages that are installed 2961 * in the system. This information will be used by the 2962 * navigator.isApplicationInstalled() API. 2963 * @param packageNames is a set of package names that are known to be 2964 * installed in the system. 2965 * 2966 * @hide not a public API 2967 */ 2968 public void addPackageNames(Set<String> packageNames) { 2969 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, packageNames); 2970 } 2971 2972 /** 2973 * Use this method to inform the webview about single packages that are 2974 * installed in the system. This information will be used by the 2975 * navigator.isApplicationInstalled() API. 2976 * @param packageName is the name of a package that is known to be 2977 * installed in the system. 2978 * 2979 * @hide not a public API 2980 */ 2981 public void addPackageName(String packageName) { 2982 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 2983 } 2984 2985 /** 2986 * Use this method to inform the webview about packages that are uninstalled 2987 * in the system. This information will be used by the 2988 * navigator.isApplicationInstalled() API. 2989 * @param packageName is the name of a package that has been uninstalled in 2990 * the system. 2991 * 2992 * @hide not a public API 2993 */ 2994 public void removePackageName(String packageName) { 2995 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 2996 } 2997 2998 /** 2999 * Return the list of currently loaded plugins. 3000 * @return The list of currently loaded plugins. 3001 * 3002 * @deprecated This was used for Gears, which has been deprecated. 3003 */ 3004 @Deprecated 3005 public static synchronized PluginList getPluginList() { 3006 return new PluginList(); 3007 } 3008 3009 /** 3010 * @deprecated This was used for Gears, which has been deprecated. 3011 */ 3012 @Deprecated 3013 public void refreshPlugins(boolean reloadOpenPages) { } 3014 3015 //------------------------------------------------------------------------- 3016 // Override View methods 3017 //------------------------------------------------------------------------- 3018 3019 @Override 3020 protected void finalize() throws Throwable { 3021 try { 3022 destroy(); 3023 } finally { 3024 super.finalize(); 3025 } 3026 } 3027 3028 @Override 3029 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3030 if (child == mTitleBar) { 3031 // When drawing the title bar, move it horizontally to always show 3032 // at the top of the WebView. 3033 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3034 } 3035 return super.drawChild(canvas, child, drawingTime); 3036 } 3037 3038 private void drawContent(Canvas canvas) { 3039 // Update the buttons in the picture, so when we draw the picture 3040 // to the screen, they are in the correct state. 3041 // Tell the native side if user is a) touching the screen, 3042 // b) pressing the trackball down, or c) pressing the enter key 3043 // If the cursor is on a button, we need to draw it in the pressed 3044 // state. 3045 // If mNativeClass is 0, we should not reach here, so we do not 3046 // need to check it again. 3047 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3048 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3049 || mTrackballDown || mGotCenterDown, false); 3050 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3051 } 3052 3053 @Override 3054 protected void onDraw(Canvas canvas) { 3055 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3056 if (mNativeClass == 0) { 3057 return; 3058 } 3059 3060 int saveCount = canvas.save(); 3061 if (mTitleBar != null) { 3062 canvas.translate(0, (int) mTitleBar.getHeight()); 3063 } 3064 if (mDragTrackerHandler == null) { 3065 drawContent(canvas); 3066 } else { 3067 if (!mDragTrackerHandler.draw(canvas)) { 3068 // sometimes the tracker doesn't draw, even though its active 3069 drawContent(canvas); 3070 } 3071 if (mDragTrackerHandler.isFinished()) { 3072 mDragTrackerHandler = null; 3073 } 3074 } 3075 canvas.restoreToCount(saveCount); 3076 3077 // Now draw the shadow. 3078 if (mTitleBar != null) { 3079 int y = mScrollY + getVisibleTitleHeight(); 3080 int height = (int) (5f * getContext().getResources() 3081 .getDisplayMetrics().density); 3082 mTitleShadow.setBounds(mScrollX, y, mScrollX + getWidth(), 3083 y + height); 3084 mTitleShadow.draw(canvas); 3085 } 3086 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3087 invalidate(); 3088 } 3089 mWebViewCore.signalRepaintDone(); 3090 } 3091 3092 @Override 3093 public void setLayoutParams(ViewGroup.LayoutParams params) { 3094 if (params.height == LayoutParams.WRAP_CONTENT) { 3095 mWrapContent = true; 3096 } 3097 super.setLayoutParams(params); 3098 } 3099 3100 @Override 3101 public boolean performLongClick() { 3102 // performLongClick() is the result of a delayed message. If we switch 3103 // to windows overview, the WebView will be temporarily removed from the 3104 // view system. In that case, do nothing. 3105 if (getParent() == null) return false; 3106 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3107 // Send the click so that the textfield is in focus 3108 centerKeyPressOnTextField(); 3109 rebuildWebTextView(); 3110 } 3111 if (inEditingMode()) { 3112 return mWebTextView.performLongClick(); 3113 } else { 3114 return super.performLongClick(); 3115 } 3116 } 3117 3118 boolean inAnimateZoom() { 3119 return mZoomScale != 0; 3120 } 3121 3122 /** 3123 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3124 * has changed. This is especially important for password fields, which are 3125 * drawn by the WebTextView, since it conveys more information than what 3126 * webkit draws. Thus we need to reposition it to show in the correct 3127 * place. 3128 */ 3129 private boolean mNeedToAdjustWebTextView; 3130 3131 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3132 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3133 Rect vBox = contentToViewRect(contentBounds); 3134 Rect visibleRect = new Rect(); 3135 calcOurVisibleRect(visibleRect); 3136 // If the textfield is on screen, place the WebTextView in 3137 // its new place, accounting for our new scroll/zoom values, 3138 // and adjust its textsize. 3139 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3140 : visibleRect.contains(vBox)) { 3141 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3142 vBox.height()); 3143 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3144 contentToViewDimension( 3145 nativeFocusCandidateTextSize())); 3146 return true; 3147 } else { 3148 // The textfield is now off screen. The user probably 3149 // was not zooming to see the textfield better. Remove 3150 // the WebTextView. If the user types a key, and the 3151 // textfield is still in focus, we will reconstruct 3152 // the WebTextView and scroll it back on screen. 3153 mWebTextView.remove(); 3154 return false; 3155 } 3156 } 3157 3158 private static class Metrics { 3159 int mScrollX; 3160 int mScrollY; 3161 int mWidth; 3162 int mHeight; 3163 float mInvScale; 3164 } 3165 3166 private Metrics getViewMetrics() { 3167 Metrics metrics = new Metrics(); 3168 metrics.mScrollX = mScrollX; 3169 metrics.mScrollY = computeVerticalScrollOffset(); 3170 metrics.mWidth = getWidth(); 3171 metrics.mHeight = getHeight() - getVisibleTitleHeight(); 3172 if (mFindIsUp) { 3173 metrics.mHeight -= mFindHeight; 3174 } 3175 metrics.mInvScale = mInvActualScale; 3176 return metrics; 3177 } 3178 3179 private void drawExtras(Canvas canvas, int extras) { 3180 // If mNativeClass is 0, we should not reach here, so we do not 3181 // need to check it again. 3182 // Currently for each draw we compute the animation values; 3183 // We may in the future decide to do that independently. 3184 if (nativeEvaluateLayersAnimations()) { 3185 // If we have unfinished (or unstarted) animations, 3186 // we ask for a repaint. 3187 invalidate(); 3188 } 3189 3190 nativeDrawExtras(canvas, extras); 3191 } 3192 3193 private void drawCoreAndCursorRing(Canvas canvas, int color, 3194 boolean drawCursorRing) { 3195 if (mDrawHistory) { 3196 canvas.scale(mActualScale, mActualScale); 3197 canvas.drawPicture(mHistoryPicture); 3198 return; 3199 } 3200 3201 boolean animateZoom = mZoomScale != 0; 3202 boolean animateScroll = (!mScroller.isFinished() 3203 || mVelocityTracker != null) 3204 && (mTouchMode != TOUCH_DRAG_MODE || 3205 mHeldMotionless != MOTIONLESS_TRUE); 3206 if (mTouchMode == TOUCH_DRAG_MODE) { 3207 if (mHeldMotionless == MOTIONLESS_PENDING) { 3208 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3209 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3210 mHeldMotionless = MOTIONLESS_FALSE; 3211 } 3212 if (mHeldMotionless == MOTIONLESS_FALSE) { 3213 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3214 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3215 mHeldMotionless = MOTIONLESS_PENDING; 3216 } 3217 } 3218 if (animateZoom) { 3219 float zoomScale; 3220 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 3221 if (interval < ZOOM_ANIMATION_LENGTH) { 3222 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 3223 zoomScale = 1.0f / (mInvInitialZoomScale 3224 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 3225 invalidate(); 3226 } else { 3227 zoomScale = mZoomScale; 3228 // set mZoomScale to be 0 as we have done animation 3229 mZoomScale = 0; 3230 WebViewCore.resumeUpdatePicture(mWebViewCore); 3231 // call invalidate() again to draw with the final filters 3232 invalidate(); 3233 if (mNeedToAdjustWebTextView) { 3234 mNeedToAdjustWebTextView = false; 3235 if (didUpdateTextViewBounds(false) 3236 && nativeFocusCandidateIsPassword()) { 3237 // If it is a password field, start drawing the 3238 // WebTextView once again. 3239 mWebTextView.setInPassword(true); 3240 } 3241 } 3242 } 3243 // calculate the intermediate scroll position. As we need to use 3244 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 3245 float scale = zoomScale * mInvInitialZoomScale; 3246 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 3247 - mZoomCenterX); 3248 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 3249 * zoomScale)) + mScrollX; 3250 int titleHeight = getTitleHeight(); 3251 int ty = Math.round(scale 3252 * (mInitialScrollY + mZoomCenterY - titleHeight) 3253 - (mZoomCenterY - titleHeight)); 3254 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 3255 - titleHeight, getViewHeight(), Math.round(mContentHeight 3256 * zoomScale)) + titleHeight) + mScrollY; 3257 canvas.translate(tx, ty); 3258 canvas.scale(zoomScale, zoomScale); 3259 if (inEditingMode() && !mNeedToAdjustWebTextView 3260 && mZoomScale != 0) { 3261 // The WebTextView is up. Keep track of this so we can adjust 3262 // its size and placement when we finish zooming 3263 mNeedToAdjustWebTextView = true; 3264 // If it is in password mode, turn it off so it does not draw 3265 // misplaced. 3266 if (nativeFocusCandidateIsPassword()) { 3267 mWebTextView.setInPassword(false); 3268 } 3269 } 3270 } else { 3271 canvas.scale(mActualScale, mActualScale); 3272 } 3273 3274 mWebViewCore.drawContentPicture(canvas, color, 3275 (animateZoom || mPreviewZoomOnly), animateScroll); 3276 if (mNativeClass == 0) return; 3277 // decide which adornments to draw 3278 int extras = DRAW_EXTRAS_NONE; 3279 if (mFindIsUp) { 3280 // When the FindDialog is up, only draw the matches if we are not in 3281 // the process of scrolling them into view. 3282 if (!animateScroll) { 3283 extras = DRAW_EXTRAS_FIND; 3284 } 3285 } else if (mShiftIsPressed) { 3286 if (!animateZoom && !mPreviewZoomOnly) { 3287 extras = DRAW_EXTRAS_SELECTION; 3288 nativeSetSelectionRegion(mTouchSelection || mExtendSelection); 3289 nativeSetSelectionPointer(!mTouchSelection, mInvActualScale, 3290 mSelectX, mSelectY - getTitleHeight(), 3291 mExtendSelection); 3292 } 3293 } else if (drawCursorRing) { 3294 extras = DRAW_EXTRAS_CURSOR_RING; 3295 } 3296 drawExtras(canvas, extras); 3297 3298 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3299 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3300 mTouchMode = TOUCH_SHORTPRESS_MODE; 3301 HitTestResult hitTest = getHitTestResult(); 3302 if (mPreventLongPress || (hitTest != null && 3303 hitTest.mType != HitTestResult.UNKNOWN_TYPE)) { 3304 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3305 .obtainMessage(SWITCH_TO_LONGPRESS), 3306 LONG_PRESS_TIMEOUT); 3307 } 3308 } 3309 } 3310 if (mFocusSizeChanged) { 3311 mFocusSizeChanged = false; 3312 // If we are zooming, this will get handled above, when the zoom 3313 // finishes. We also do not need to do this unless the WebTextView 3314 // is showing. 3315 if (!animateZoom && inEditingMode()) { 3316 didUpdateTextViewBounds(true); 3317 } 3318 } 3319 } 3320 3321 // draw history 3322 private boolean mDrawHistory = false; 3323 private Picture mHistoryPicture = null; 3324 private int mHistoryWidth = 0; 3325 private int mHistoryHeight = 0; 3326 3327 // Only check the flag, can be called from WebCore thread 3328 boolean drawHistory() { 3329 return mDrawHistory; 3330 } 3331 3332 // Should only be called in UI thread 3333 void switchOutDrawHistory() { 3334 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3335 if (mDrawHistory && mWebViewCore.pictureReady()) { 3336 mDrawHistory = false; 3337 invalidate(); 3338 int oldScrollX = mScrollX; 3339 int oldScrollY = mScrollY; 3340 mScrollX = pinLocX(mScrollX); 3341 mScrollY = pinLocY(mScrollY); 3342 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3343 mUserScroll = false; 3344 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3345 oldScrollY); 3346 } 3347 sendOurVisibleRect(); 3348 } 3349 } 3350 3351 WebViewCore.CursorData cursorData() { 3352 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3353 result.mMoveGeneration = nativeMoveGeneration(); 3354 result.mFrame = nativeCursorFramePointer(); 3355 Point position = nativeCursorPosition(); 3356 result.mX = position.x; 3357 result.mY = position.y; 3358 return result; 3359 } 3360 3361 /** 3362 * Delete text from start to end in the focused textfield. If there is no 3363 * focus, or if start == end, silently fail. If start and end are out of 3364 * order, swap them. 3365 * @param start Beginning of selection to delete. 3366 * @param end End of selection to delete. 3367 */ 3368 /* package */ void deleteSelection(int start, int end) { 3369 mTextGeneration++; 3370 WebViewCore.TextSelectionData data 3371 = new WebViewCore.TextSelectionData(start, end); 3372 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3373 data); 3374 } 3375 3376 /** 3377 * Set the selection to (start, end) in the focused textfield. If start and 3378 * end are out of order, swap them. 3379 * @param start Beginning of selection. 3380 * @param end End of selection. 3381 */ 3382 /* package */ void setSelection(int start, int end) { 3383 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3384 } 3385 3386 @Override 3387 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3388 InputConnection connection = super.onCreateInputConnection(outAttrs); 3389 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3390 return connection; 3391 } 3392 3393 /** 3394 * Called in response to a message from webkit telling us that the soft 3395 * keyboard should be launched. 3396 */ 3397 private void displaySoftKeyboard(boolean isTextView) { 3398 InputMethodManager imm = (InputMethodManager) 3399 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3400 3401 // bring it back to the default scale so that user can enter text 3402 boolean zoom = mActualScale < mDefaultScale; 3403 if (zoom) { 3404 mInZoomOverview = false; 3405 mZoomCenterX = mLastTouchX; 3406 mZoomCenterY = mLastTouchY; 3407 // do not change text wrap scale so that there is no reflow 3408 setNewZoomScale(mDefaultScale, false, false); 3409 } 3410 if (isTextView) { 3411 rebuildWebTextView(); 3412 if (inEditingMode()) { 3413 mWebTextView.setDefaultSelection(); 3414 imm.showSoftInput(mWebTextView, 0); 3415 if (zoom) { 3416 didUpdateTextViewBounds(true); 3417 } 3418 return; 3419 } 3420 } 3421 // Used by plugins. 3422 // Also used if the navigation cache is out of date, and 3423 // does not recognize that a textfield is in focus. In that 3424 // case, use WebView as the targeted view. 3425 // see http://b/issue?id=2457459 3426 imm.showSoftInput(this, 0); 3427 } 3428 3429 // Called by WebKit to instruct the UI to hide the keyboard 3430 private void hideSoftKeyboard() { 3431 InputMethodManager imm = (InputMethodManager) 3432 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3433 3434 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3435 } 3436 3437 /* 3438 * This method checks the current focus and cursor and potentially rebuilds 3439 * mWebTextView to have the appropriate properties, such as password, 3440 * multiline, and what text it contains. It also removes it if necessary. 3441 */ 3442 /* package */ void rebuildWebTextView() { 3443 // If the WebView does not have focus, do nothing until it gains focus. 3444 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3445 return; 3446 } 3447 boolean alreadyThere = inEditingMode(); 3448 // inEditingMode can only return true if mWebTextView is non-null, 3449 // so we can safely call remove() if (alreadyThere) 3450 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3451 if (alreadyThere) { 3452 mWebTextView.remove(); 3453 } 3454 return; 3455 } 3456 // At this point, we know we have found an input field, so go ahead 3457 // and create the WebTextView if necessary. 3458 if (mWebTextView == null) { 3459 mWebTextView = new WebTextView(mContext, WebView.this); 3460 // Initialize our generation number. 3461 mTextGeneration = 0; 3462 } 3463 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3464 contentToViewDimension(nativeFocusCandidateTextSize())); 3465 Rect visibleRect = new Rect(); 3466 calcOurContentVisibleRect(visibleRect); 3467 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3468 // should be in content coordinates. 3469 Rect bounds = nativeFocusCandidateNodeBounds(); 3470 Rect vBox = contentToViewRect(bounds); 3471 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3472 if (!Rect.intersects(bounds, visibleRect)) { 3473 mWebTextView.bringIntoView(); 3474 } 3475 String text = nativeFocusCandidateText(); 3476 int nodePointer = nativeFocusCandidatePointer(); 3477 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3478 // It is possible that we have the same textfield, but it has moved, 3479 // i.e. In the case of opening/closing the screen. 3480 // In that case, we need to set the dimensions, but not the other 3481 // aspects. 3482 // If the text has been changed by webkit, update it. However, if 3483 // there has been more UI text input, ignore it. We will receive 3484 // another update when that text is recognized. 3485 if (text != null && !text.equals(mWebTextView.getText().toString()) 3486 && nativeTextGeneration() == mTextGeneration) { 3487 mWebTextView.setTextAndKeepSelection(text); 3488 } 3489 } else { 3490 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3491 Gravity.RIGHT : Gravity.NO_GRAVITY); 3492 // This needs to be called before setType, which may call 3493 // requestFormData, and it needs to have the correct nodePointer. 3494 mWebTextView.setNodePointer(nodePointer); 3495 mWebTextView.setType(nativeFocusCandidateType()); 3496 if (null == text) { 3497 if (DebugFlags.WEB_VIEW) { 3498 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3499 } 3500 text = ""; 3501 } 3502 mWebTextView.setTextAndKeepSelection(text); 3503 InputMethodManager imm = InputMethodManager.peekInstance(); 3504 if (imm != null && imm.isActive(mWebTextView)) { 3505 imm.restartInput(mWebTextView); 3506 } 3507 } 3508 mWebTextView.requestFocus(); 3509 } 3510 3511 /** 3512 * Called by WebTextView to find saved form data associated with the 3513 * textfield 3514 * @param name Name of the textfield. 3515 * @param nodePointer Pointer to the node of the textfield, so it can be 3516 * compared to the currently focused textfield when the data is 3517 * retrieved. 3518 */ 3519 /* package */ void requestFormData(String name, int nodePointer) { 3520 if (mWebViewCore.getSettings().getSaveFormData()) { 3521 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3522 update.arg1 = nodePointer; 3523 RequestFormData updater = new RequestFormData(name, getUrl(), 3524 update); 3525 Thread t = new Thread(updater); 3526 t.start(); 3527 } 3528 } 3529 3530 /** 3531 * Pass a message to find out the <label> associated with the <input> 3532 * identified by nodePointer 3533 * @param framePointer Pointer to the frame containing the <input> node 3534 * @param nodePointer Pointer to the node for which a <label> is desired. 3535 */ 3536 /* package */ void requestLabel(int framePointer, int nodePointer) { 3537 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3538 nodePointer); 3539 } 3540 3541 /* 3542 * This class requests an Adapter for the WebTextView which shows past 3543 * entries stored in the database. It is a Runnable so that it can be done 3544 * in its own thread, without slowing down the UI. 3545 */ 3546 private class RequestFormData implements Runnable { 3547 private String mName; 3548 private String mUrl; 3549 private Message mUpdateMessage; 3550 3551 public RequestFormData(String name, String url, Message msg) { 3552 mName = name; 3553 mUrl = url; 3554 mUpdateMessage = msg; 3555 } 3556 3557 public void run() { 3558 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3559 if (pastEntries.size() > 0) { 3560 AutoCompleteAdapter adapter = new 3561 AutoCompleteAdapter(mContext, pastEntries); 3562 mUpdateMessage.obj = adapter; 3563 mUpdateMessage.sendToTarget(); 3564 } 3565 } 3566 } 3567 3568 /** 3569 * Dump the display tree to "/sdcard/displayTree.txt" 3570 * 3571 * @hide debug only 3572 */ 3573 public void dumpDisplayTree() { 3574 nativeDumpDisplayTree(getUrl()); 3575 } 3576 3577 /** 3578 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 3579 * "/sdcard/domTree.txt" 3580 * 3581 * @hide debug only 3582 */ 3583 public void dumpDomTree(boolean toFile) { 3584 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 3585 } 3586 3587 /** 3588 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 3589 * to "/sdcard/renderTree.txt" 3590 * 3591 * @hide debug only 3592 */ 3593 public void dumpRenderTree(boolean toFile) { 3594 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 3595 } 3596 3597 /** 3598 * Dump the V8 counters to standard output. 3599 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 3600 * true. Otherwise, this will do nothing. 3601 * 3602 * @hide debug only 3603 */ 3604 public void dumpV8Counters() { 3605 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 3606 } 3607 3608 // This is used to determine long press with the center key. Does not 3609 // affect long press with the trackball/touch. 3610 private boolean mGotCenterDown = false; 3611 3612 @Override 3613 public boolean onKeyDown(int keyCode, KeyEvent event) { 3614 if (DebugFlags.WEB_VIEW) { 3615 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3616 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3617 } 3618 3619 if (mNativeClass == 0) { 3620 return false; 3621 } 3622 3623 // do this hack up front, so it always works, regardless of touch-mode 3624 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3625 mAutoRedraw = !mAutoRedraw; 3626 if (mAutoRedraw) { 3627 invalidate(); 3628 } 3629 return true; 3630 } 3631 3632 // Bubble up the key event if 3633 // 1. it is a system key; or 3634 // 2. the host application wants to handle it; 3635 if (event.isSystem() 3636 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3637 return false; 3638 } 3639 3640 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3641 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3642 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3643 setUpSelectXY(); 3644 } 3645 3646 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3647 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3648 // always handle the navigation keys in the UI thread 3649 switchOutDrawHistory(); 3650 if (mShiftIsPressed) { 3651 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 3652 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 3653 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 3654 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 3655 int multiplier = event.getRepeatCount() + 1; 3656 moveSelection(xRate * multiplier, yRate * multiplier); 3657 return true; 3658 } 3659 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3660 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3661 return true; 3662 } 3663 // Bubble up the key event as WebView doesn't handle it 3664 return false; 3665 } 3666 3667 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3668 switchOutDrawHistory(); 3669 if (event.getRepeatCount() == 0) { 3670 if (mShiftIsPressed) { 3671 return true; // discard press if copy in progress 3672 } 3673 mGotCenterDown = true; 3674 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3675 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3676 // Already checked mNativeClass, so we do not need to check it 3677 // again. 3678 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3679 return true; 3680 } 3681 // Bubble up the key event as WebView doesn't handle it 3682 return false; 3683 } 3684 3685 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3686 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3687 // turn off copy select if a shift-key combo is pressed 3688 mExtendSelection = mShiftIsPressed = false; 3689 if (mTouchMode == TOUCH_SELECT_MODE) { 3690 mTouchMode = TOUCH_INIT_MODE; 3691 } 3692 } 3693 3694 if (getSettings().getNavDump()) { 3695 switch (keyCode) { 3696 case KeyEvent.KEYCODE_4: 3697 dumpDisplayTree(); 3698 break; 3699 case KeyEvent.KEYCODE_5: 3700 case KeyEvent.KEYCODE_6: 3701 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 3702 break; 3703 case KeyEvent.KEYCODE_7: 3704 case KeyEvent.KEYCODE_8: 3705 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 3706 break; 3707 case KeyEvent.KEYCODE_9: 3708 nativeInstrumentReport(); 3709 return true; 3710 } 3711 } 3712 3713 if (nativeCursorIsTextInput()) { 3714 // This message will put the node in focus, for the DOM's notion 3715 // of focus, and make the focuscontroller active 3716 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3717 nativeCursorNodePointer()); 3718 // This will bring up the WebTextView and put it in focus, for 3719 // our view system's notion of focus 3720 rebuildWebTextView(); 3721 // Now we need to pass the event to it 3722 if (inEditingMode()) { 3723 mWebTextView.setDefaultSelection(); 3724 return mWebTextView.dispatchKeyEvent(event); 3725 } 3726 } else if (nativeHasFocusNode()) { 3727 // In this case, the cursor is not on a text input, but the focus 3728 // might be. Check it, and if so, hand over to the WebTextView. 3729 rebuildWebTextView(); 3730 if (inEditingMode()) { 3731 mWebTextView.setDefaultSelection(); 3732 return mWebTextView.dispatchKeyEvent(event); 3733 } 3734 } 3735 3736 // TODO: should we pass all the keys to DOM or check the meta tag 3737 if (nativeCursorWantsKeyEvents() || true) { 3738 // pass the key to DOM 3739 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3740 // return true as DOM handles the key 3741 return true; 3742 } 3743 3744 // Bubble up the key event as WebView doesn't handle it 3745 return false; 3746 } 3747 3748 @Override 3749 public boolean onKeyUp(int keyCode, KeyEvent event) { 3750 if (DebugFlags.WEB_VIEW) { 3751 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3752 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3753 } 3754 3755 if (mNativeClass == 0) { 3756 return false; 3757 } 3758 3759 // special CALL handling when cursor node's href is "tel:XXX" 3760 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3761 String text = nativeCursorText(); 3762 if (!nativeCursorIsTextInput() && text != null 3763 && text.startsWith(SCHEME_TEL)) { 3764 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3765 getContext().startActivity(intent); 3766 return true; 3767 } 3768 } 3769 3770 // Bubble up the key event if 3771 // 1. it is a system key; or 3772 // 2. the host application wants to handle it; 3773 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3774 return false; 3775 } 3776 3777 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3778 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3779 if (commitCopy()) { 3780 return true; 3781 } 3782 } 3783 3784 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3785 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3786 // always handle the navigation keys in the UI thread 3787 // Bubble up the key event as WebView doesn't handle it 3788 return false; 3789 } 3790 3791 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3792 // remove the long press message first 3793 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3794 mGotCenterDown = false; 3795 3796 if (mShiftIsPressed) { 3797 if (mExtendSelection) { 3798 commitCopy(); 3799 } else { 3800 mExtendSelection = true; 3801 invalidate(); // draw the i-beam instead of the arrow 3802 } 3803 return true; // discard press if copy in progress 3804 } 3805 3806 // perform the single click 3807 Rect visibleRect = sendOurVisibleRect(); 3808 // Note that sendOurVisibleRect calls viewToContent, so the 3809 // coordinates should be in content coordinates. 3810 if (!nativeCursorIntersects(visibleRect)) { 3811 return false; 3812 } 3813 WebViewCore.CursorData data = cursorData(); 3814 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3815 playSoundEffect(SoundEffectConstants.CLICK); 3816 if (nativeCursorIsTextInput()) { 3817 rebuildWebTextView(); 3818 centerKeyPressOnTextField(); 3819 if (inEditingMode()) { 3820 mWebTextView.setDefaultSelection(); 3821 } 3822 return true; 3823 } 3824 clearTextEntry(true); 3825 nativeSetFollowedLink(true); 3826 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 3827 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3828 nativeCursorNodePointer()); 3829 } 3830 return true; 3831 } 3832 3833 // TODO: should we pass all the keys to DOM or check the meta tag 3834 if (nativeCursorWantsKeyEvents() || true) { 3835 // pass the key to DOM 3836 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3837 // return true as DOM handles the key 3838 return true; 3839 } 3840 3841 // Bubble up the key event as WebView doesn't handle it 3842 return false; 3843 } 3844 3845 private void setUpSelectXY() { 3846 mExtendSelection = false; 3847 mShiftIsPressed = true; 3848 if (nativeHasCursorNode()) { 3849 Rect rect = nativeCursorNodeBounds(); 3850 mSelectX = contentToViewX(rect.left); 3851 mSelectY = contentToViewY(rect.top); 3852 } else if (mLastTouchY > getVisibleTitleHeight()) { 3853 mSelectX = mScrollX + (int) mLastTouchX; 3854 mSelectY = mScrollY + (int) mLastTouchY; 3855 } else { 3856 mSelectX = mScrollX + getViewWidth() / 2; 3857 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 3858 } 3859 nativeHideCursor(); 3860 } 3861 3862 public void emulateShiftHeld() { 3863 if (0 == mNativeClass) return; // client isn't initialized 3864 setUpSelectXY(); 3865 } 3866 3867 private boolean commitCopy() { 3868 boolean copiedSomething = false; 3869 if (mExtendSelection) { 3870 String selection = nativeGetSelection(); 3871 if (selection != "") { 3872 if (DebugFlags.WEB_VIEW) { 3873 Log.v(LOGTAG, "commitCopy \"" + selection + "\""); 3874 } 3875 Toast.makeText(mContext 3876 , com.android.internal.R.string.text_copied 3877 , Toast.LENGTH_SHORT).show(); 3878 copiedSomething = true; 3879 try { 3880 IClipboard clip = IClipboard.Stub.asInterface( 3881 ServiceManager.getService("clipboard")); 3882 clip.setClipboardText(selection); 3883 } catch (android.os.RemoteException e) { 3884 Log.e(LOGTAG, "Clipboard failed", e); 3885 } 3886 } 3887 mExtendSelection = false; 3888 } 3889 mShiftIsPressed = false; 3890 invalidate(); // remove selection region and pointer 3891 if (mTouchMode == TOUCH_SELECT_MODE) { 3892 mTouchMode = TOUCH_INIT_MODE; 3893 } 3894 return copiedSomething; 3895 } 3896 3897 @Override 3898 protected void onAttachedToWindow() { 3899 super.onAttachedToWindow(); 3900 if (hasWindowFocus()) onWindowFocusChanged(true); 3901 } 3902 3903 @Override 3904 protected void onDetachedFromWindow() { 3905 clearTextEntry(false); 3906 super.onDetachedFromWindow(); 3907 // Clean up the zoom controller 3908 mZoomButtonsController.setVisible(false); 3909 } 3910 3911 /** 3912 * @deprecated WebView no longer needs to implement 3913 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3914 */ 3915 @Deprecated 3916 public void onChildViewAdded(View parent, View child) {} 3917 3918 /** 3919 * @deprecated WebView no longer needs to implement 3920 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3921 */ 3922 @Deprecated 3923 public void onChildViewRemoved(View p, View child) {} 3924 3925 /** 3926 * @deprecated WebView should not have implemented 3927 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3928 * does nothing now. 3929 */ 3930 @Deprecated 3931 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3932 } 3933 3934 // To avoid drawing the cursor ring, and remove the TextView when our window 3935 // loses focus. 3936 @Override 3937 public void onWindowFocusChanged(boolean hasWindowFocus) { 3938 if (hasWindowFocus) { 3939 if (hasFocus()) { 3940 // If our window regained focus, and we have focus, then begin 3941 // drawing the cursor ring 3942 mDrawCursorRing = true; 3943 if (mNativeClass != 0) { 3944 nativeRecordButtons(true, false, true); 3945 if (inEditingMode()) { 3946 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3947 } 3948 } 3949 } else { 3950 // If our window gained focus, but we do not have it, do not 3951 // draw the cursor ring. 3952 mDrawCursorRing = false; 3953 // We do not call nativeRecordButtons here because we assume 3954 // that when we lost focus, or window focus, it got called with 3955 // false for the first parameter 3956 } 3957 } else { 3958 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3959 /* 3960 * The zoom controls come in their own window, so our window 3961 * loses focus. Our policy is to not draw the cursor ring if 3962 * our window is not focused, but this is an exception since 3963 * the user can still navigate the web page with the zoom 3964 * controls showing. 3965 */ 3966 // If our window has lost focus, stop drawing the cursor ring 3967 mDrawCursorRing = false; 3968 } 3969 mGotKeyDown = false; 3970 mShiftIsPressed = false; 3971 if (mNativeClass != 0) { 3972 nativeRecordButtons(false, false, true); 3973 } 3974 setFocusControllerInactive(); 3975 } 3976 invalidate(); 3977 super.onWindowFocusChanged(hasWindowFocus); 3978 } 3979 3980 /* 3981 * Pass a message to WebCore Thread, telling the WebCore::Page's 3982 * FocusController to be "inactive" so that it will 3983 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3984 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3985 */ 3986 /* package */ void setFocusControllerInactive() { 3987 // Do not need to also check whether mWebViewCore is null, because 3988 // mNativeClass is only set if mWebViewCore is non null 3989 if (mNativeClass == 0) return; 3990 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 3991 } 3992 3993 @Override 3994 protected void onFocusChanged(boolean focused, int direction, 3995 Rect previouslyFocusedRect) { 3996 if (DebugFlags.WEB_VIEW) { 3997 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3998 } 3999 if (focused) { 4000 // When we regain focus, if we have window focus, resume drawing 4001 // the cursor ring 4002 if (hasWindowFocus()) { 4003 mDrawCursorRing = true; 4004 if (mNativeClass != 0) { 4005 nativeRecordButtons(true, false, true); 4006 } 4007 //} else { 4008 // The WebView has gained focus while we do not have 4009 // windowfocus. When our window lost focus, we should have 4010 // called nativeRecordButtons(false...) 4011 } 4012 } else { 4013 // When we lost focus, unless focus went to the TextView (which is 4014 // true if we are in editing mode), stop drawing the cursor ring. 4015 if (!inEditingMode()) { 4016 mDrawCursorRing = false; 4017 if (mNativeClass != 0) { 4018 nativeRecordButtons(false, false, true); 4019 } 4020 setFocusControllerInactive(); 4021 } 4022 mGotKeyDown = false; 4023 } 4024 4025 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4026 } 4027 4028 /** 4029 * @hide 4030 */ 4031 @Override 4032 protected boolean setFrame(int left, int top, int right, int bottom) { 4033 boolean changed = super.setFrame(left, top, right, bottom); 4034 if (!changed && mHeightCanMeasure) { 4035 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4036 // in WebViewCore after we get the first layout. We do call 4037 // requestLayout() when we get contentSizeChanged(). But the View 4038 // system won't call onSizeChanged if the dimension is not changed. 4039 // In this case, we need to call sendViewSizeZoom() explicitly to 4040 // notify the WebKit about the new dimensions. 4041 sendViewSizeZoom(); 4042 } 4043 return changed; 4044 } 4045 4046 private static class PostScale implements Runnable { 4047 final WebView mWebView; 4048 final boolean mUpdateTextWrap; 4049 4050 public PostScale(WebView webView, boolean updateTextWrap) { 4051 mWebView = webView; 4052 mUpdateTextWrap = updateTextWrap; 4053 } 4054 4055 public void run() { 4056 if (mWebView.mWebViewCore != null) { 4057 // we always force, in case our height changed, in which case we 4058 // still want to send the notification over to webkit. 4059 mWebView.setNewZoomScale(mWebView.mActualScale, 4060 mUpdateTextWrap, true); 4061 // update the zoom buttons as the scale can be changed 4062 if (mWebView.getSettings().getBuiltInZoomControls()) { 4063 mWebView.updateZoomButtonsEnabled(); 4064 } 4065 } 4066 } 4067 } 4068 4069 @Override 4070 protected void onSizeChanged(int w, int h, int ow, int oh) { 4071 super.onSizeChanged(w, h, ow, oh); 4072 // Center zooming to the center of the screen. 4073 if (mZoomScale == 0) { // unless we're already zooming 4074 // To anchor at top left corner. 4075 mZoomCenterX = 0; 4076 mZoomCenterY = getVisibleTitleHeight(); 4077 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4078 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4079 } 4080 4081 // adjust the max viewport width depending on the view dimensions. This 4082 // is to ensure the scaling is not going insane. So do not shrink it if 4083 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4084 int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE); 4085 if (newMaxViewportWidth > sMaxViewportWidth) { 4086 sMaxViewportWidth = newMaxViewportWidth; 4087 } 4088 4089 // update mMinZoomScale if the minimum zoom scale is not fixed 4090 if (!mMinZoomScaleFixed) { 4091 // when change from narrow screen to wide screen, the new viewWidth 4092 // can be wider than the old content width. We limit the minimum 4093 // scale to 1.0f. The proper minimum scale will be calculated when 4094 // the new picture shows up. 4095 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 4096 / (mDrawHistory ? mHistoryPicture.getWidth() 4097 : mZoomOverviewWidth)); 4098 if (mInitialScaleInPercent > 0) { 4099 // limit the minZoomScale to the initialScale if it is set 4100 float initialScale = mInitialScaleInPercent / 100.0f; 4101 if (mMinZoomScale > initialScale) { 4102 mMinZoomScale = initialScale; 4103 } 4104 } 4105 } 4106 4107 // onSizeChanged() is called during WebView layout. And any 4108 // requestLayout() is blocked during layout. As setNewZoomScale() will 4109 // call its child View to reposition itself through ViewManager's 4110 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 4111 // <b/> 4112 // only update the text wrap scale if width changed. 4113 post(new PostScale(this, w != ow)); 4114 } 4115 4116 @Override 4117 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4118 super.onScrollChanged(l, t, oldl, oldt); 4119 sendOurVisibleRect(); 4120 // update WebKit if visible title bar height changed. The logic is same 4121 // as getVisibleTitleHeight. 4122 int titleHeight = getTitleHeight(); 4123 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4124 sendViewSizeZoom(); 4125 } 4126 } 4127 4128 @Override 4129 public boolean dispatchKeyEvent(KeyEvent event) { 4130 boolean dispatch = true; 4131 4132 if (!inEditingMode()) { 4133 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4134 mGotKeyDown = true; 4135 } else { 4136 if (!mGotKeyDown) { 4137 /* 4138 * We got a key up for which we were not the recipient of 4139 * the original key down. Don't give it to the view. 4140 */ 4141 dispatch = false; 4142 } 4143 mGotKeyDown = false; 4144 } 4145 } 4146 4147 if (dispatch) { 4148 return super.dispatchKeyEvent(event); 4149 } else { 4150 // We didn't dispatch, so let something else handle the key 4151 return false; 4152 } 4153 } 4154 4155 // Here are the snap align logic: 4156 // 1. If it starts nearly horizontally or vertically, snap align; 4157 // 2. If there is a dramitic direction change, let it go; 4158 // 3. If there is a same direction back and forth, lock it. 4159 4160 // adjustable parameters 4161 private int mMinLockSnapReverseDistance; 4162 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4163 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4164 4165 private static int sign(float x) { 4166 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4167 } 4168 4169 // if the page can scroll <= this value, we won't allow the drag tracker 4170 // to have any effect. 4171 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4172 4173 private class DragTrackerHandler { 4174 private final DragTracker mProxy; 4175 private final float mStartY, mStartX; 4176 private final float mMinDY, mMinDX; 4177 private final float mMaxDY, mMaxDX; 4178 private float mCurrStretchY, mCurrStretchX; 4179 private int mSX, mSY; 4180 private Interpolator mInterp; 4181 private float[] mXY = new float[2]; 4182 4183 // inner (non-state) classes can't have enums :( 4184 private static final int DRAGGING_STATE = 0; 4185 private static final int ANIMATING_STATE = 1; 4186 private static final int FINISHED_STATE = 2; 4187 private int mState; 4188 4189 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4190 mProxy = proxy; 4191 4192 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4193 int viewTop = getScrollY(); 4194 int viewBottom = viewTop + getHeight(); 4195 4196 mStartY = y; 4197 mMinDY = -viewTop; 4198 mMaxDY = docBottom - viewBottom; 4199 4200 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4201 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4202 " up/down= " + mMinDY + " " + mMaxDY); 4203 } 4204 4205 int docRight = computeHorizontalScrollRange(); 4206 int viewLeft = getScrollX(); 4207 int viewRight = viewLeft + getWidth(); 4208 mStartX = x; 4209 mMinDX = -viewLeft; 4210 mMaxDX = docRight - viewRight; 4211 4212 mState = DRAGGING_STATE; 4213 mProxy.onStartDrag(x, y); 4214 4215 // ensure we buildBitmap at least once 4216 mSX = -99999; 4217 } 4218 4219 private float computeStretch(float delta, float min, float max) { 4220 float stretch = 0; 4221 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4222 if (delta < min) { 4223 stretch = delta - min; 4224 } else if (delta > max) { 4225 stretch = delta - max; 4226 } 4227 } 4228 return stretch; 4229 } 4230 4231 public void dragTo(float x, float y) { 4232 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4233 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4234 4235 if ((mSnapScrollMode & SNAP_X) != 0) { 4236 sy = 0; 4237 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4238 sx = 0; 4239 } 4240 4241 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4242 mCurrStretchX = sx; 4243 mCurrStretchY = sy; 4244 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4245 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4246 " " + sy); 4247 } 4248 if (mProxy.onStretchChange(sx, sy)) { 4249 invalidate(); 4250 } 4251 } 4252 } 4253 4254 public void stopDrag() { 4255 final int DURATION = 200; 4256 int now = (int)SystemClock.uptimeMillis(); 4257 mInterp = new Interpolator(2); 4258 mXY[0] = mCurrStretchX; 4259 mXY[1] = mCurrStretchY; 4260 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4261 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4262 mInterp.setKeyFrame(0, now, mXY, blend); 4263 float[] zerozero = new float[] { 0, 0 }; 4264 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4265 mState = ANIMATING_STATE; 4266 4267 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4268 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4269 } 4270 } 4271 4272 // Call this after each draw. If it ruturns null, the tracker is done 4273 public boolean isFinished() { 4274 return mState == FINISHED_STATE; 4275 } 4276 4277 private int hiddenHeightOfTitleBar() { 4278 return getTitleHeight() - getVisibleTitleHeight(); 4279 } 4280 4281 // need a way to know if 565 or 8888 is the right config for 4282 // capturing the display and giving it to the drag proxy 4283 private Bitmap.Config offscreenBitmapConfig() { 4284 // hard code 565 for now 4285 return Bitmap.Config.RGB_565; 4286 } 4287 4288 /* If the tracker draws, then this returns true, otherwise it will 4289 return false, and draw nothing. 4290 */ 4291 public boolean draw(Canvas canvas) { 4292 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4293 int sx = getScrollX(); 4294 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4295 if (mSX != sx || mSY != sy) { 4296 buildBitmap(sx, sy); 4297 mSX = sx; 4298 mSY = sy; 4299 } 4300 4301 if (mState == ANIMATING_STATE) { 4302 Interpolator.Result result = mInterp.timeToValues(mXY); 4303 if (result == Interpolator.Result.FREEZE_END) { 4304 mState = FINISHED_STATE; 4305 return false; 4306 } else { 4307 mProxy.onStretchChange(mXY[0], mXY[1]); 4308 invalidate(); 4309 // fall through to the draw 4310 } 4311 } 4312 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4313 canvas.translate(sx, sy); 4314 mProxy.onDraw(canvas); 4315 canvas.restoreToCount(count); 4316 return true; 4317 } 4318 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4319 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4320 mCurrStretchX + " " + mCurrStretchY); 4321 } 4322 return false; 4323 } 4324 4325 private void buildBitmap(int sx, int sy) { 4326 int w = getWidth(); 4327 int h = getViewHeight(); 4328 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4329 Canvas canvas = new Canvas(bm); 4330 canvas.translate(-sx, -sy); 4331 drawContent(canvas); 4332 4333 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4334 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4335 " " + sy + " " + w + " " + h); 4336 } 4337 mProxy.onBitmapChange(bm); 4338 } 4339 } 4340 4341 /** @hide */ 4342 public static class DragTracker { 4343 public void onStartDrag(float x, float y) {} 4344 public boolean onStretchChange(float sx, float sy) { 4345 // return true to have us inval the view 4346 return false; 4347 } 4348 public void onStopDrag() {} 4349 public void onBitmapChange(Bitmap bm) {} 4350 public void onDraw(Canvas canvas) {} 4351 } 4352 4353 /** @hide */ 4354 public DragTracker getDragTracker() { 4355 return mDragTracker; 4356 } 4357 4358 /** @hide */ 4359 public void setDragTracker(DragTracker tracker) { 4360 mDragTracker = tracker; 4361 } 4362 4363 private DragTracker mDragTracker; 4364 private DragTrackerHandler mDragTrackerHandler; 4365 4366 private class ScaleDetectorListener implements 4367 ScaleGestureDetector.OnScaleGestureListener { 4368 4369 public boolean onScaleBegin(ScaleGestureDetector detector) { 4370 // cancel the single touch handling 4371 cancelTouch(); 4372 if (mZoomButtonsController.isVisible()) { 4373 mZoomButtonsController.setVisible(false); 4374 } 4375 // reset the zoom overview mode so that the page won't auto grow 4376 mInZoomOverview = false; 4377 // If it is in password mode, turn it off so it does not draw 4378 // misplaced. 4379 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4380 mWebTextView.setInPassword(false); 4381 } 4382 return true; 4383 } 4384 4385 public void onScaleEnd(ScaleGestureDetector detector) { 4386 if (mPreviewZoomOnly) { 4387 mPreviewZoomOnly = false; 4388 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4389 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4390 // don't reflow when zoom in; when zoom out, do reflow if the 4391 // new scale is almost minimum scale; 4392 boolean reflowNow = (mActualScale - mMinZoomScale <= 0.01f) 4393 || ((mActualScale <= 0.8 * mTextWrapScale)); 4394 // force zoom after mPreviewZoomOnly is set to false so that the 4395 // new view size will be passed to the WebKit 4396 setNewZoomScale(mActualScale, reflowNow, true); 4397 // call invalidate() to draw without zoom filter 4398 invalidate(); 4399 } 4400 // adjust the edit text view if needed 4401 if (inEditingMode() && didUpdateTextViewBounds(false) 4402 && nativeFocusCandidateIsPassword()) { 4403 // If it is a password field, start drawing the 4404 // WebTextView once again. 4405 mWebTextView.setInPassword(true); 4406 } 4407 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4408 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4409 // may trigger the unwanted fling. 4410 mTouchMode = TOUCH_PINCH_DRAG; 4411 startTouch(detector.getFocusX(), detector.getFocusY(), 4412 mLastTouchTime); 4413 } 4414 4415 public boolean onScale(ScaleGestureDetector detector) { 4416 float scale = (float) (Math.round(detector.getScaleFactor() 4417 * mActualScale * 100) / 100.0); 4418 if (Math.abs(scale - mActualScale) >= PREVIEW_SCALE_INCREMENT) { 4419 mPreviewZoomOnly = true; 4420 // limit the scale change per step 4421 if (scale > mActualScale) { 4422 scale = Math.min(scale, mActualScale * 1.25f); 4423 } else { 4424 scale = Math.max(scale, mActualScale * 0.8f); 4425 } 4426 mZoomCenterX = detector.getFocusX(); 4427 mZoomCenterY = detector.getFocusY(); 4428 setNewZoomScale(scale, false, false); 4429 invalidate(); 4430 return true; 4431 } 4432 return false; 4433 } 4434 } 4435 4436 @Override 4437 public boolean onTouchEvent(MotionEvent ev) { 4438 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4439 return false; 4440 } 4441 4442 if (DebugFlags.WEB_VIEW) { 4443 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4444 + mTouchMode); 4445 } 4446 4447 int action; 4448 float x, y; 4449 long eventTime = ev.getEventTime(); 4450 4451 // FIXME: we may consider to give WebKit an option to handle multi-touch 4452 // events later. 4453 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 4454 if (mMinZoomScale < mMaxZoomScale) { 4455 mScaleDetector.onTouchEvent(ev); 4456 if (mScaleDetector.isInProgress()) { 4457 mLastTouchTime = eventTime; 4458 return true; 4459 } 4460 x = mScaleDetector.getFocusX(); 4461 y = mScaleDetector.getFocusY(); 4462 action = ev.getAction() & MotionEvent.ACTION_MASK; 4463 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4464 cancelTouch(); 4465 action = MotionEvent.ACTION_DOWN; 4466 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4467 // set mLastTouchX/Y to the remaining point 4468 mLastTouchX = x; 4469 mLastTouchY = y; 4470 } else if (action == MotionEvent.ACTION_MOVE) { 4471 // negative x or y indicate it is on the edge, skip it. 4472 if (x < 0 || y < 0) { 4473 return true; 4474 } 4475 } 4476 } else { 4477 // if the page disallow zoom, skip multi-pointer action 4478 return true; 4479 } 4480 } else { 4481 action = ev.getAction(); 4482 x = ev.getX(); 4483 y = ev.getY(); 4484 } 4485 4486 // Due to the touch screen edge effect, a touch closer to the edge 4487 // always snapped to the edge. As getViewWidth() can be different from 4488 // getWidth() due to the scrollbar, adjusting the point to match 4489 // getViewWidth(). Same applied to the height. 4490 if (x > getViewWidth() - 1) { 4491 x = getViewWidth() - 1; 4492 } 4493 if (y > getViewHeightWithTitle() - 1) { 4494 y = getViewHeightWithTitle() - 1; 4495 } 4496 4497 // pass the touch events, except ACTION_MOVE which will be handled 4498 // later, from UI thread to WebCore thread 4499 if (mFullScreenHolder != null || (mForwardTouchEvents 4500 && action != MotionEvent.ACTION_MOVE 4501 && (action == MotionEvent.ACTION_DOWN || mPreventDrag 4502 != PREVENT_DRAG_CANCEL))) { 4503 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 4504 ted.mAction = action; 4505 ted.mX = viewToContentX((int) x + mScrollX); 4506 ted.mY = viewToContentY((int) y + mScrollY); 4507 ted.mEventTime = eventTime; 4508 ted.mMetaState = ev.getMetaState(); 4509 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4510 mLastSentTouchTime = eventTime; 4511 } 4512 4513 float fDeltaX = mLastTouchX - x; 4514 float fDeltaY = mLastTouchY - y; 4515 int deltaX = (int) fDeltaX; 4516 int deltaY = (int) fDeltaY; 4517 4518 switch (action) { 4519 case MotionEvent.ACTION_DOWN: { 4520 mPreventDrag = PREVENT_DRAG_NO; 4521 if (!mScroller.isFinished()) { 4522 // stop the current scroll animation, but if this is 4523 // the start of a fling, allow it to add to the current 4524 // fling's velocity 4525 mScroller.abortAnimation(); 4526 mTouchMode = TOUCH_DRAG_START_MODE; 4527 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 4528 } else if (mShiftIsPressed) { 4529 mSelectX = mScrollX + (int) x; 4530 mSelectY = mScrollY + (int) y; 4531 mTouchMode = TOUCH_SELECT_MODE; 4532 if (DebugFlags.WEB_VIEW) { 4533 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 4534 } 4535 nativeMoveSelection(viewToContentX(mSelectX), 4536 viewToContentY(mSelectY), false); 4537 mTouchSelection = mExtendSelection = true; 4538 invalidate(); // draw the i-beam instead of the arrow 4539 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4540 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4541 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4542 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4543 } else { 4544 // commit the short press action for the previous tap 4545 doShortPress(); 4546 // continue, mTouchMode should be still TOUCH_INIT_MODE 4547 } 4548 } else { 4549 mPreviewZoomOnly = false; 4550 mTouchMode = TOUCH_INIT_MODE; 4551 mPreventDrag = mForwardTouchEvents ? PREVENT_DRAG_MAYBE_YES 4552 : PREVENT_DRAG_NO; 4553 mPreventLongPress = false; 4554 mPreventDoubleTap = false; 4555 mWebViewCore.sendMessage( 4556 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4557 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4558 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 4559 (eventTime - mLastTouchUpTime), eventTime); 4560 } 4561 } 4562 // Trigger the link 4563 if (mTouchMode == TOUCH_INIT_MODE 4564 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4565 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4566 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 4567 } 4568 startTouch(x, y, eventTime); 4569 break; 4570 } 4571 case MotionEvent.ACTION_MOVE: { 4572 if (mTouchMode == TOUCH_DONE_MODE) { 4573 // no dragging during scroll zoom animation 4574 break; 4575 } 4576 mVelocityTracker.addMovement(ev); 4577 4578 if (mTouchMode != TOUCH_DRAG_MODE) { 4579 if (mTouchMode == TOUCH_SELECT_MODE) { 4580 mSelectX = mScrollX + (int) x; 4581 mSelectY = mScrollY + (int) y; 4582 if (DebugFlags.WEB_VIEW) { 4583 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 4584 } 4585 nativeMoveSelection(viewToContentX(mSelectX), 4586 viewToContentY(mSelectY), true); 4587 invalidate(); 4588 break; 4589 } 4590 if ((deltaX * deltaX + deltaY * deltaY) < mTouchSlopSquare) { 4591 break; 4592 } 4593 4594 // pass the first ACTION_MOVE from UI thread to WebCore 4595 // thread after the distance is confirmed that it is a drag 4596 if (mFullScreenHolder == null && mForwardTouchEvents 4597 && mPreventDrag != PREVENT_DRAG_CANCEL) { 4598 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 4599 ted.mAction = action; 4600 ted.mX = viewToContentX((int) x + mScrollX); 4601 ted.mY = viewToContentY((int) y + mScrollY); 4602 ted.mEventTime = eventTime; 4603 ted.mMetaState = ev.getMetaState(); 4604 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4605 mLastSentTouchTime = eventTime; 4606 } 4607 4608 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 4609 // track mLastTouchTime as we may need to do fling at 4610 // ACTION_UP 4611 mLastTouchTime = eventTime; 4612 break; 4613 } 4614 if (mTouchMode == TOUCH_SHORTPRESS_MODE 4615 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4616 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4617 } else if (mTouchMode == TOUCH_INIT_MODE 4618 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4619 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4620 } 4621 if (mFullScreenHolder != null) { 4622 // in full screen mode, the WebView can't be panned. 4623 mTouchMode = TOUCH_DONE_MODE; 4624 break; 4625 } 4626 4627 // if it starts nearly horizontal or vertical, enforce it 4628 int ax = Math.abs(deltaX); 4629 int ay = Math.abs(deltaY); 4630 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4631 mSnapScrollMode = SNAP_X; 4632 mSnapPositive = deltaX > 0; 4633 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4634 mSnapScrollMode = SNAP_Y; 4635 mSnapPositive = deltaY > 0; 4636 } 4637 4638 mTouchMode = TOUCH_DRAG_MODE; 4639 mLastTouchX = x; 4640 mLastTouchY = y; 4641 fDeltaX = 0.0f; 4642 fDeltaY = 0.0f; 4643 deltaX = 0; 4644 deltaY = 0; 4645 4646 WebViewCore.reducePriority(); 4647 if (!mDragFromTextInput) { 4648 nativeHideCursor(); 4649 } 4650 WebSettings settings = getSettings(); 4651 if (settings.supportZoom() 4652 && settings.getBuiltInZoomControls() 4653 && !mZoomButtonsController.isVisible() 4654 && mMinZoomScale < mMaxZoomScale) { 4655 mZoomButtonsController.setVisible(true); 4656 int count = settings.getDoubleTapToastCount(); 4657 if (mInZoomOverview && count > 0) { 4658 settings.setDoubleTapToastCount(--count); 4659 Toast.makeText(mContext, 4660 com.android.internal.R.string.double_tap_toast, 4661 Toast.LENGTH_LONG).show(); 4662 } 4663 } 4664 } else { 4665 // pass the touch events from UI thread to WebCore thread 4666 if (mFullScreenHolder == null && mForwardTouchEvents 4667 && eventTime - mLastSentTouchTime > mCurrentTouchInterval 4668 && mPreventDrag != PREVENT_DRAG_CANCEL) { 4669 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 4670 ted.mAction = action; 4671 ted.mX = viewToContentX((int) x + mScrollX); 4672 ted.mY = viewToContentY((int) y + mScrollY); 4673 ted.mEventTime = eventTime; 4674 ted.mMetaState = ev.getMetaState(); 4675 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4676 mLastSentTouchTime = eventTime; 4677 } 4678 } 4679 4680 // do pan 4681 int newScrollX = pinLocX(mScrollX + deltaX); 4682 int newDeltaX = newScrollX - mScrollX; 4683 if (deltaX != newDeltaX) { 4684 deltaX = newDeltaX; 4685 fDeltaX = (float) newDeltaX; 4686 } 4687 int newScrollY = pinLocY(mScrollY + deltaY); 4688 int newDeltaY = newScrollY - mScrollY; 4689 if (deltaY != newDeltaY) { 4690 deltaY = newDeltaY; 4691 fDeltaY = (float) newDeltaY; 4692 } 4693 boolean done = false; 4694 boolean keepScrollBarsVisible = false; 4695 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 4696 keepScrollBarsVisible = done = true; 4697 } else { 4698 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4699 int ax = Math.abs(deltaX); 4700 int ay = Math.abs(deltaY); 4701 if (mSnapScrollMode == SNAP_X) { 4702 // radical change means getting out of snap mode 4703 if (ay > MAX_SLOPE_FOR_DIAG * ax 4704 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4705 mSnapScrollMode = SNAP_NONE; 4706 } 4707 // reverse direction means lock in the snap mode 4708 if (ax > MAX_SLOPE_FOR_DIAG * ay && 4709 (mSnapPositive 4710 ? deltaX < -mMinLockSnapReverseDistance 4711 : deltaX > mMinLockSnapReverseDistance)) { 4712 mSnapScrollMode |= SNAP_LOCK; 4713 } 4714 } else { 4715 // radical change means getting out of snap mode 4716 if (ax > MAX_SLOPE_FOR_DIAG * ay 4717 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4718 mSnapScrollMode = SNAP_NONE; 4719 } 4720 // reverse direction means lock in the snap mode 4721 if (ay > MAX_SLOPE_FOR_DIAG * ax && 4722 (mSnapPositive 4723 ? deltaY < -mMinLockSnapReverseDistance 4724 : deltaY > mMinLockSnapReverseDistance)) { 4725 mSnapScrollMode |= SNAP_LOCK; 4726 } 4727 } 4728 } 4729 if (mSnapScrollMode != SNAP_NONE) { 4730 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 4731 deltaY = 0; 4732 } else { 4733 deltaX = 0; 4734 } 4735 } 4736 if ((deltaX | deltaY) != 0) { 4737 scrollBy(deltaX, deltaY); 4738 if (deltaX != 0) { 4739 mLastTouchX = x; 4740 } 4741 if (deltaY != 0) { 4742 mLastTouchY = y; 4743 } 4744 mHeldMotionless = MOTIONLESS_FALSE; 4745 } else { 4746 // keep the scrollbar on the screen even there is no 4747 // scroll 4748 keepScrollBarsVisible = true; 4749 } 4750 mLastTouchTime = eventTime; 4751 mUserScroll = true; 4752 } 4753 4754 if (!getSettings().getBuiltInZoomControls()) { 4755 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 4756 if (mZoomControls != null && showPlusMinus) { 4757 if (mZoomControls.getVisibility() == View.VISIBLE) { 4758 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4759 } else { 4760 mZoomControls.show(showPlusMinus, false); 4761 } 4762 mPrivateHandler.postDelayed(mZoomControlRunnable, 4763 ZOOM_CONTROLS_TIMEOUT); 4764 } 4765 } 4766 4767 if (mDragTrackerHandler != null) { 4768 mDragTrackerHandler.dragTo(x, y); 4769 } 4770 4771 if (keepScrollBarsVisible) { 4772 if (mHeldMotionless != MOTIONLESS_TRUE) { 4773 mHeldMotionless = MOTIONLESS_TRUE; 4774 invalidate(); 4775 } 4776 // keep the scrollbar on the screen even there is no scroll 4777 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 4778 false); 4779 // return false to indicate that we can't pan out of the 4780 // view space 4781 return !done; 4782 } 4783 break; 4784 } 4785 case MotionEvent.ACTION_UP: { 4786 if (mDragTrackerHandler != null) { 4787 mDragTrackerHandler.stopDrag(); 4788 } 4789 mLastTouchUpTime = eventTime; 4790 switch (mTouchMode) { 4791 case TOUCH_DOUBLE_TAP_MODE: // double tap 4792 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4793 mTouchMode = TOUCH_DONE_MODE; 4794 if (mPreventDoubleTap) { 4795 WebViewCore.TouchEventData ted 4796 = new WebViewCore.TouchEventData(); 4797 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 4798 ted.mX = viewToContentX((int) x + mScrollX); 4799 ted.mY = viewToContentY((int) y + mScrollY); 4800 ted.mEventTime = eventTime; 4801 ted.mMetaState = ev.getMetaState(); 4802 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4803 } else if (mFullScreenHolder == null) { 4804 doDoubleTap(); 4805 } 4806 break; 4807 case TOUCH_SELECT_MODE: 4808 commitCopy(); 4809 mTouchSelection = false; 4810 break; 4811 case TOUCH_INIT_MODE: // tap 4812 case TOUCH_SHORTPRESS_START_MODE: 4813 case TOUCH_SHORTPRESS_MODE: 4814 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4815 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4816 if ((deltaX * deltaX + deltaY * deltaY) > mTouchSlopSquare) { 4817 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 4818 " WebCore's response for touch down."); 4819 if (mFullScreenHolder == null 4820 && (computeHorizontalScrollExtent() < computeHorizontalScrollRange() 4821 || computeVerticalScrollExtent() < computeVerticalScrollRange())) { 4822 // remove the pending TOUCH_EVENT and send a 4823 // cancel 4824 mWebViewCore 4825 .removeMessages(EventHub.TOUCH_EVENT); 4826 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 4827 ted.mAction = MotionEvent.ACTION_CANCEL; 4828 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, 4829 ted); 4830 // we will not rewrite drag code here, but we 4831 // will try fling if it applies. 4832 WebViewCore.reducePriority(); 4833 // fall through to TOUCH_DRAG_MODE 4834 } else { 4835 break; 4836 } 4837 } else { 4838 // mPreventDrag can be PREVENT_DRAG_MAYBE_YES in 4839 // TOUCH_INIT_MODE. To give WebCoreThread a little 4840 // more time to send PREVENT_TOUCH_ID, we check 4841 // again in responding RELEASE_SINGLE_TAP. 4842 if (mPreventDrag != PREVENT_DRAG_YES) { 4843 if (mTouchMode == TOUCH_INIT_MODE) { 4844 mPrivateHandler.sendMessageDelayed( 4845 mPrivateHandler.obtainMessage( 4846 RELEASE_SINGLE_TAP), 4847 ViewConfiguration.getDoubleTapTimeout()); 4848 } else { 4849 mTouchMode = TOUCH_DONE_MODE; 4850 doShortPress(); 4851 } 4852 } 4853 break; 4854 } 4855 case TOUCH_DRAG_MODE: 4856 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4857 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4858 mHeldMotionless = MOTIONLESS_TRUE; 4859 // redraw in high-quality, as we're done dragging 4860 invalidate(); 4861 // if the user waits a while w/o moving before the 4862 // up, we don't want to do a fling 4863 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4864 mVelocityTracker.addMovement(ev); 4865 doFling(); 4866 break; 4867 } 4868 mLastVelocity = 0; 4869 WebViewCore.resumePriority(); 4870 break; 4871 case TOUCH_DRAG_START_MODE: 4872 case TOUCH_DONE_MODE: 4873 // do nothing 4874 break; 4875 } 4876 // we also use mVelocityTracker == null to tell us that we are 4877 // not "moving around", so we can take the slower/prettier 4878 // mode in the drawing code 4879 if (mVelocityTracker != null) { 4880 mVelocityTracker.recycle(); 4881 mVelocityTracker = null; 4882 } 4883 break; 4884 } 4885 case MotionEvent.ACTION_CANCEL: { 4886 cancelTouch(); 4887 break; 4888 } 4889 } 4890 return true; 4891 } 4892 4893 private void startTouch(float x, float y, long eventTime) { 4894 // Remember where the motion event started 4895 mLastTouchX = x; 4896 mLastTouchY = y; 4897 mLastTouchTime = eventTime; 4898 mVelocityTracker = VelocityTracker.obtain(); 4899 mSnapScrollMode = SNAP_NONE; 4900 if (mDragTracker != null) { 4901 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 4902 } 4903 } 4904 4905 private void cancelTouch() { 4906 if (mDragTrackerHandler != null) { 4907 mDragTrackerHandler.stopDrag(); 4908 } 4909 // we also use mVelocityTracker == null to tell us that we are 4910 // not "moving around", so we can take the slower/prettier 4911 // mode in the drawing code 4912 if (mVelocityTracker != null) { 4913 mVelocityTracker.recycle(); 4914 mVelocityTracker = null; 4915 } 4916 if (mTouchMode == TOUCH_DRAG_MODE) { 4917 WebViewCore.resumePriority(); 4918 } 4919 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4920 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4921 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4922 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4923 mHeldMotionless = MOTIONLESS_TRUE; 4924 mTouchMode = TOUCH_DONE_MODE; 4925 nativeHideCursor(); 4926 } 4927 4928 private long mTrackballFirstTime = 0; 4929 private long mTrackballLastTime = 0; 4930 private float mTrackballRemainsX = 0.0f; 4931 private float mTrackballRemainsY = 0.0f; 4932 private int mTrackballXMove = 0; 4933 private int mTrackballYMove = 0; 4934 private boolean mExtendSelection = false; 4935 private boolean mTouchSelection = false; 4936 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4937 private static final int TRACKBALL_TIMEOUT = 200; 4938 private static final int TRACKBALL_WAIT = 100; 4939 private static final int TRACKBALL_SCALE = 400; 4940 private static final int TRACKBALL_SCROLL_COUNT = 5; 4941 private static final int TRACKBALL_MOVE_COUNT = 10; 4942 private static final int TRACKBALL_MULTIPLIER = 3; 4943 private static final int SELECT_CURSOR_OFFSET = 16; 4944 private int mSelectX = 0; 4945 private int mSelectY = 0; 4946 private boolean mFocusSizeChanged = false; 4947 private boolean mShiftIsPressed = false; 4948 private boolean mTrackballDown = false; 4949 private long mTrackballUpTime = 0; 4950 private long mLastCursorTime = 0; 4951 private Rect mLastCursorBounds; 4952 4953 // Set by default; BrowserActivity clears to interpret trackball data 4954 // directly for movement. Currently, the framework only passes 4955 // arrow key events, not trackball events, from one child to the next 4956 private boolean mMapTrackballToArrowKeys = true; 4957 4958 public void setMapTrackballToArrowKeys(boolean setMap) { 4959 mMapTrackballToArrowKeys = setMap; 4960 } 4961 4962 void resetTrackballTime() { 4963 mTrackballLastTime = 0; 4964 } 4965 4966 @Override 4967 public boolean onTrackballEvent(MotionEvent ev) { 4968 long time = ev.getEventTime(); 4969 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4970 if (ev.getY() > 0) pageDown(true); 4971 if (ev.getY() < 0) pageUp(true); 4972 return true; 4973 } 4974 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4975 if (mShiftIsPressed) { 4976 return true; // discard press if copy in progress 4977 } 4978 mTrackballDown = true; 4979 if (mNativeClass == 0) { 4980 return false; 4981 } 4982 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4983 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4984 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4985 nativeSelectBestAt(mLastCursorBounds); 4986 } 4987 if (DebugFlags.WEB_VIEW) { 4988 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4989 + " time=" + time 4990 + " mLastCursorTime=" + mLastCursorTime); 4991 } 4992 if (isInTouchMode()) requestFocusFromTouch(); 4993 return false; // let common code in onKeyDown at it 4994 } 4995 if (ev.getAction() == MotionEvent.ACTION_UP) { 4996 // LONG_PRESS_CENTER is set in common onKeyDown 4997 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4998 mTrackballDown = false; 4999 mTrackballUpTime = time; 5000 if (mShiftIsPressed) { 5001 if (mExtendSelection) { 5002 commitCopy(); 5003 } else { 5004 mExtendSelection = true; 5005 invalidate(); // draw the i-beam instead of the arrow 5006 } 5007 return true; // discard press if copy in progress 5008 } 5009 if (DebugFlags.WEB_VIEW) { 5010 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5011 + " time=" + time 5012 ); 5013 } 5014 return false; // let common code in onKeyUp at it 5015 } 5016 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 5017 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5018 return false; 5019 } 5020 if (mTrackballDown) { 5021 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5022 return true; // discard move if trackball is down 5023 } 5024 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5025 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5026 return true; 5027 } 5028 // TODO: alternatively we can do panning as touch does 5029 switchOutDrawHistory(); 5030 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5031 if (DebugFlags.WEB_VIEW) { 5032 Log.v(LOGTAG, "onTrackballEvent time=" 5033 + time + " last=" + mTrackballLastTime); 5034 } 5035 mTrackballFirstTime = time; 5036 mTrackballXMove = mTrackballYMove = 0; 5037 } 5038 mTrackballLastTime = time; 5039 if (DebugFlags.WEB_VIEW) { 5040 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5041 } 5042 mTrackballRemainsX += ev.getX(); 5043 mTrackballRemainsY += ev.getY(); 5044 doTrackball(time); 5045 return true; 5046 } 5047 5048 void moveSelection(float xRate, float yRate) { 5049 if (mNativeClass == 0) 5050 return; 5051 int width = getViewWidth(); 5052 int height = getViewHeight(); 5053 mSelectX += xRate; 5054 mSelectY += yRate; 5055 int maxX = width + mScrollX; 5056 int maxY = height + mScrollY; 5057 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5058 , mSelectX)); 5059 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5060 , mSelectY)); 5061 if (DebugFlags.WEB_VIEW) { 5062 Log.v(LOGTAG, "moveSelection" 5063 + " mSelectX=" + mSelectX 5064 + " mSelectY=" + mSelectY 5065 + " mScrollX=" + mScrollX 5066 + " mScrollY=" + mScrollY 5067 + " xRate=" + xRate 5068 + " yRate=" + yRate 5069 ); 5070 } 5071 nativeMoveSelection(viewToContentX(mSelectX), 5072 viewToContentY(mSelectY), mExtendSelection); 5073 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5074 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5075 : 0; 5076 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5077 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5078 : 0; 5079 pinScrollBy(scrollX, scrollY, true, 0); 5080 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5081 requestRectangleOnScreen(select); 5082 invalidate(); 5083 } 5084 5085 private int scaleTrackballX(float xRate, int width) { 5086 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5087 int nextXMove = xMove; 5088 if (xMove > 0) { 5089 if (xMove > mTrackballXMove) { 5090 xMove -= mTrackballXMove; 5091 } 5092 } else if (xMove < mTrackballXMove) { 5093 xMove -= mTrackballXMove; 5094 } 5095 mTrackballXMove = nextXMove; 5096 return xMove; 5097 } 5098 5099 private int scaleTrackballY(float yRate, int height) { 5100 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5101 int nextYMove = yMove; 5102 if (yMove > 0) { 5103 if (yMove > mTrackballYMove) { 5104 yMove -= mTrackballYMove; 5105 } 5106 } else if (yMove < mTrackballYMove) { 5107 yMove -= mTrackballYMove; 5108 } 5109 mTrackballYMove = nextYMove; 5110 return yMove; 5111 } 5112 5113 private int keyCodeToSoundsEffect(int keyCode) { 5114 switch(keyCode) { 5115 case KeyEvent.KEYCODE_DPAD_UP: 5116 return SoundEffectConstants.NAVIGATION_UP; 5117 case KeyEvent.KEYCODE_DPAD_RIGHT: 5118 return SoundEffectConstants.NAVIGATION_RIGHT; 5119 case KeyEvent.KEYCODE_DPAD_DOWN: 5120 return SoundEffectConstants.NAVIGATION_DOWN; 5121 case KeyEvent.KEYCODE_DPAD_LEFT: 5122 return SoundEffectConstants.NAVIGATION_LEFT; 5123 } 5124 throw new IllegalArgumentException("keyCode must be one of " + 5125 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5126 "KEYCODE_DPAD_LEFT}."); 5127 } 5128 5129 private void doTrackball(long time) { 5130 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5131 if (elapsed == 0) { 5132 elapsed = TRACKBALL_TIMEOUT; 5133 } 5134 float xRate = mTrackballRemainsX * 1000 / elapsed; 5135 float yRate = mTrackballRemainsY * 1000 / elapsed; 5136 int viewWidth = getViewWidth(); 5137 int viewHeight = getViewHeight(); 5138 if (mShiftIsPressed) { 5139 moveSelection(scaleTrackballX(xRate, viewWidth), 5140 scaleTrackballY(yRate, viewHeight)); 5141 mTrackballRemainsX = mTrackballRemainsY = 0; 5142 return; 5143 } 5144 float ax = Math.abs(xRate); 5145 float ay = Math.abs(yRate); 5146 float maxA = Math.max(ax, ay); 5147 if (DebugFlags.WEB_VIEW) { 5148 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5149 + " xRate=" + xRate 5150 + " yRate=" + yRate 5151 + " mTrackballRemainsX=" + mTrackballRemainsX 5152 + " mTrackballRemainsY=" + mTrackballRemainsY); 5153 } 5154 int width = mContentWidth - viewWidth; 5155 int height = mContentHeight - viewHeight; 5156 if (width < 0) width = 0; 5157 if (height < 0) height = 0; 5158 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5159 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5160 maxA = Math.max(ax, ay); 5161 int count = Math.max(0, (int) maxA); 5162 int oldScrollX = mScrollX; 5163 int oldScrollY = mScrollY; 5164 if (count > 0) { 5165 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5166 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5167 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5168 KeyEvent.KEYCODE_DPAD_RIGHT; 5169 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5170 if (DebugFlags.WEB_VIEW) { 5171 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5172 + " count=" + count 5173 + " mTrackballRemainsX=" + mTrackballRemainsX 5174 + " mTrackballRemainsY=" + mTrackballRemainsY); 5175 } 5176 if (navHandledKey(selectKeyCode, count, false, time, false)) { 5177 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5178 } 5179 mTrackballRemainsX = mTrackballRemainsY = 0; 5180 } 5181 if (count >= TRACKBALL_SCROLL_COUNT) { 5182 int xMove = scaleTrackballX(xRate, width); 5183 int yMove = scaleTrackballY(yRate, height); 5184 if (DebugFlags.WEB_VIEW) { 5185 Log.v(LOGTAG, "doTrackball pinScrollBy" 5186 + " count=" + count 5187 + " xMove=" + xMove + " yMove=" + yMove 5188 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5189 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5190 ); 5191 } 5192 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5193 xMove = 0; 5194 } 5195 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5196 yMove = 0; 5197 } 5198 if (xMove != 0 || yMove != 0) { 5199 pinScrollBy(xMove, yMove, true, 0); 5200 } 5201 mUserScroll = true; 5202 } 5203 } 5204 5205 private int computeMaxScrollY() { 5206 int maxContentH = computeVerticalScrollRange() + getTitleHeight(); 5207 return Math.max(maxContentH - getViewHeightWithTitle(), getTitleHeight()); 5208 } 5209 5210 public void flingScroll(int vx, int vy) { 5211 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5212 int maxY = computeMaxScrollY(); 5213 5214 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 5215 invalidate(); 5216 } 5217 5218 private void doFling() { 5219 if (mVelocityTracker == null) { 5220 return; 5221 } 5222 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5223 int maxY = computeMaxScrollY(); 5224 5225 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5226 int vx = (int) mVelocityTracker.getXVelocity(); 5227 int vy = (int) mVelocityTracker.getYVelocity(); 5228 5229 if (mSnapScrollMode != SNAP_NONE) { 5230 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5231 vy = 0; 5232 } else { 5233 vx = 0; 5234 } 5235 } 5236 5237 if (true /* EMG release: make our fling more like Maps' */) { 5238 // maps cuts their velocity in half 5239 vx = vx * 3 / 4; 5240 vy = vy * 3 / 4; 5241 } 5242 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5243 WebViewCore.resumePriority(); 5244 return; 5245 } 5246 float currentVelocity = mScroller.getCurrVelocity(); 5247 if (mLastVelocity > 0 && currentVelocity > 0) { 5248 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5249 - Math.atan2(vy, vx))); 5250 final float circle = (float) (Math.PI) * 2.0f; 5251 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5252 vx += currentVelocity * mLastVelX / mLastVelocity; 5253 vy += currentVelocity * mLastVelY / mLastVelocity; 5254 if (DebugFlags.WEB_VIEW) { 5255 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5256 } 5257 } else if (DebugFlags.WEB_VIEW) { 5258 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5259 } 5260 } else if (DebugFlags.WEB_VIEW) { 5261 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5262 + " current=" + currentVelocity 5263 + " vx=" + vx + " vy=" + vy 5264 + " maxX=" + maxX + " maxY=" + maxY 5265 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5266 } 5267 mLastVelX = vx; 5268 mLastVelY = vy; 5269 mLastVelocity = (float) Math.hypot(vx, vy); 5270 5271 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 5272 // TODO: duration is calculated based on velocity, if the range is 5273 // small, the animation will stop before duration is up. We may 5274 // want to calculate how long the animation is going to run to precisely 5275 // resume the webcore update. 5276 final int time = mScroller.getDuration(); 5277 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5278 awakenScrollBars(time); 5279 invalidate(); 5280 } 5281 5282 private boolean zoomWithPreview(float scale) { 5283 float oldScale = mActualScale; 5284 mInitialScrollX = mScrollX; 5285 mInitialScrollY = mScrollY; 5286 5287 // snap to DEFAULT_SCALE if it is close 5288 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 5289 scale = mDefaultScale; 5290 } 5291 5292 setNewZoomScale(scale, true, false); 5293 5294 if (oldScale != mActualScale) { 5295 // use mZoomPickerScale to see zoom preview first 5296 mZoomStart = SystemClock.uptimeMillis(); 5297 mInvInitialZoomScale = 1.0f / oldScale; 5298 mInvFinalZoomScale = 1.0f / mActualScale; 5299 mZoomScale = mActualScale; 5300 WebViewCore.pauseUpdatePicture(mWebViewCore); 5301 invalidate(); 5302 return true; 5303 } else { 5304 return false; 5305 } 5306 } 5307 5308 /** 5309 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5310 * in charge of installing this view to the view hierarchy. This view will 5311 * become visible when the user starts scrolling via touch and fade away if 5312 * the user does not interact with it. 5313 * <p/> 5314 * API version 3 introduces a built-in zoom mechanism that is shown 5315 * automatically by the MapView. This is the preferred approach for 5316 * showing the zoom UI. 5317 * 5318 * @deprecated The built-in zoom mechanism is preferred, see 5319 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5320 */ 5321 @Deprecated 5322 public View getZoomControls() { 5323 if (!getSettings().supportZoom()) { 5324 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5325 return null; 5326 } 5327 if (mZoomControls == null) { 5328 mZoomControls = createZoomControls(); 5329 5330 /* 5331 * need to be set to VISIBLE first so that getMeasuredHeight() in 5332 * {@link #onSizeChanged()} can return the measured value for proper 5333 * layout. 5334 */ 5335 mZoomControls.setVisibility(View.VISIBLE); 5336 mZoomControlRunnable = new Runnable() { 5337 public void run() { 5338 5339 /* Don't dismiss the controls if the user has 5340 * focus on them. Wait and check again later. 5341 */ 5342 if (!mZoomControls.hasFocus()) { 5343 mZoomControls.hide(); 5344 } else { 5345 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5346 mPrivateHandler.postDelayed(mZoomControlRunnable, 5347 ZOOM_CONTROLS_TIMEOUT); 5348 } 5349 } 5350 }; 5351 } 5352 return mZoomControls; 5353 } 5354 5355 private ExtendedZoomControls createZoomControls() { 5356 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 5357 , null); 5358 zoomControls.setOnZoomInClickListener(new OnClickListener() { 5359 public void onClick(View v) { 5360 // reset time out 5361 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5362 mPrivateHandler.postDelayed(mZoomControlRunnable, 5363 ZOOM_CONTROLS_TIMEOUT); 5364 zoomIn(); 5365 } 5366 }); 5367 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 5368 public void onClick(View v) { 5369 // reset time out 5370 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5371 mPrivateHandler.postDelayed(mZoomControlRunnable, 5372 ZOOM_CONTROLS_TIMEOUT); 5373 zoomOut(); 5374 } 5375 }); 5376 return zoomControls; 5377 } 5378 5379 /** 5380 * Gets the {@link ZoomButtonsController} which can be used to add 5381 * additional buttons to the zoom controls window. 5382 * 5383 * @return The instance of {@link ZoomButtonsController} used by this class, 5384 * or null if it is unavailable. 5385 * @hide 5386 */ 5387 public ZoomButtonsController getZoomButtonsController() { 5388 return mZoomButtonsController; 5389 } 5390 5391 /** 5392 * Perform zoom in in the webview 5393 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 5394 */ 5395 public boolean zoomIn() { 5396 // TODO: alternatively we can disallow this during draw history mode 5397 switchOutDrawHistory(); 5398 mInZoomOverview = false; 5399 // Center zooming to the center of the screen. 5400 mZoomCenterX = getViewWidth() * .5f; 5401 mZoomCenterY = getViewHeight() * .5f; 5402 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5403 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5404 return zoomWithPreview(mActualScale * 1.25f); 5405 } 5406 5407 /** 5408 * Perform zoom out in the webview 5409 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 5410 */ 5411 public boolean zoomOut() { 5412 // TODO: alternatively we can disallow this during draw history mode 5413 switchOutDrawHistory(); 5414 // Center zooming to the center of the screen. 5415 mZoomCenterX = getViewWidth() * .5f; 5416 mZoomCenterY = getViewHeight() * .5f; 5417 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5418 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5419 return zoomWithPreview(mActualScale * 0.8f); 5420 } 5421 5422 private void updateSelection() { 5423 if (mNativeClass == 0) { 5424 return; 5425 } 5426 // mLastTouchX and mLastTouchY are the point in the current viewport 5427 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5428 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5429 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 5430 contentX + mNavSlop, contentY + mNavSlop); 5431 nativeSelectBestAt(rect); 5432 } 5433 5434 /** 5435 * Scroll the focused text field/area to match the WebTextView 5436 * @param xPercent New x position of the WebTextView from 0 to 1. 5437 * @param y New y position of the WebTextView in view coordinates 5438 */ 5439 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 5440 if (!inEditingMode() || mWebViewCore == null) { 5441 return; 5442 } 5443 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 5444 // Since this position is relative to the top of the text input 5445 // field, we do not need to take the title bar's height into 5446 // consideration. 5447 viewToContentDimension(y), 5448 new Float(xPercent)); 5449 } 5450 5451 /** 5452 * Set our starting point and time for a drag from the WebTextView. 5453 */ 5454 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 5455 if (!inEditingMode()) { 5456 return; 5457 } 5458 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 5459 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 5460 mLastTouchTime = eventTime; 5461 if (!mScroller.isFinished()) { 5462 abortAnimation(); 5463 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5464 } 5465 mSnapScrollMode = SNAP_NONE; 5466 mVelocityTracker = VelocityTracker.obtain(); 5467 mTouchMode = TOUCH_DRAG_START_MODE; 5468 } 5469 5470 /** 5471 * Given a motion event from the WebTextView, set its location to our 5472 * coordinates, and handle the event. 5473 */ 5474 /*package*/ boolean textFieldDrag(MotionEvent event) { 5475 if (!inEditingMode()) { 5476 return false; 5477 } 5478 mDragFromTextInput = true; 5479 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 5480 (float) (mWebTextView.getTop() - mScrollY)); 5481 boolean result = onTouchEvent(event); 5482 mDragFromTextInput = false; 5483 return result; 5484 } 5485 5486 /** 5487 * Due a touch up from a WebTextView. This will be handled by webkit to 5488 * change the selection. 5489 * @param event MotionEvent in the WebTextView's coordinates. 5490 */ 5491 /*package*/ void touchUpOnTextField(MotionEvent event) { 5492 if (!inEditingMode()) { 5493 return; 5494 } 5495 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 5496 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 5497 nativeMotionUp(x, y, mNavSlop); 5498 } 5499 5500 /** 5501 * Called when pressing the center key or trackball on a textfield. 5502 */ 5503 /*package*/ void centerKeyPressOnTextField() { 5504 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 5505 nativeCursorNodePointer()); 5506 } 5507 5508 private void doShortPress() { 5509 if (mNativeClass == 0) { 5510 return; 5511 } 5512 switchOutDrawHistory(); 5513 // mLastTouchX and mLastTouchY are the point in the current viewport 5514 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5515 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5516 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 5517 WebViewCore.MotionUpData motionUpData = new WebViewCore 5518 .MotionUpData(); 5519 motionUpData.mFrame = nativeCacheHitFramePointer(); 5520 motionUpData.mNode = nativeCacheHitNodePointer(); 5521 motionUpData.mBounds = nativeCacheHitNodeBounds(); 5522 motionUpData.mX = contentX; 5523 motionUpData.mY = contentY; 5524 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 5525 motionUpData); 5526 } else { 5527 doMotionUp(contentX, contentY); 5528 } 5529 } 5530 5531 private void doMotionUp(int contentX, int contentY) { 5532 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 5533 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 5534 } 5535 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 5536 playSoundEffect(SoundEffectConstants.CLICK); 5537 } 5538 } 5539 5540 // Rule for double tap: 5541 // 1. if the current scale is not same as the text wrap scale and layout 5542 // algorithm is NARROW_COLUMNS, fit to column; 5543 // 2. if the current state is not overview mode, change to overview mode; 5544 // 3. if the current state is overview mode, change to default scale. 5545 private void doDoubleTap() { 5546 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 5547 return; 5548 } 5549 mZoomCenterX = mLastTouchX; 5550 mZoomCenterY = mLastTouchY; 5551 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5552 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5553 WebSettings settings = getSettings(); 5554 // remove the zoom control after double tap 5555 if (settings.getBuiltInZoomControls()) { 5556 if (mZoomButtonsController.isVisible()) { 5557 mZoomButtonsController.setVisible(false); 5558 } 5559 } else { 5560 if (mZoomControlRunnable != null) { 5561 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5562 } 5563 if (mZoomControls != null) { 5564 mZoomControls.hide(); 5565 } 5566 } 5567 settings.setDoubleTapToastCount(0); 5568 boolean zoomToDefault = false; 5569 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 5570 && (Math.abs(mActualScale - mTextWrapScale) >= 0.01f)) { 5571 setNewZoomScale(mActualScale, true, true); 5572 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 5573 if (Math.abs(mActualScale - overviewScale) < 0.01f) { 5574 mInZoomOverview = true; 5575 } 5576 } else if (!mInZoomOverview) { 5577 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 5578 if (Math.abs(mActualScale - newScale) >= 0.01f) { 5579 mInZoomOverview = true; 5580 // Force the titlebar fully reveal in overview mode 5581 if (mScrollY < getTitleHeight()) mScrollY = 0; 5582 zoomWithPreview(newScale); 5583 } else if (Math.abs(mActualScale - mDefaultScale) >= 0.01f) { 5584 zoomToDefault = true; 5585 } 5586 } else { 5587 zoomToDefault = true; 5588 } 5589 if (zoomToDefault) { 5590 mInZoomOverview = false; 5591 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 5592 if (left != NO_LEFTEDGE) { 5593 // add a 5pt padding to the left edge. 5594 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 5595 - mScrollX; 5596 // Re-calculate the zoom center so that the new scroll x will be 5597 // on the left edge. 5598 if (viewLeft > 0) { 5599 mZoomCenterX = viewLeft * mDefaultScale 5600 / (mDefaultScale - mActualScale); 5601 } else { 5602 scrollBy(viewLeft, 0); 5603 mZoomCenterX = 0; 5604 } 5605 } 5606 zoomWithPreview(mDefaultScale); 5607 } 5608 } 5609 5610 // Called by JNI to handle a touch on a node representing an email address, 5611 // address, or phone number 5612 private void overrideLoading(String url) { 5613 mCallbackProxy.uiOverrideUrlLoading(url); 5614 } 5615 5616 @Override 5617 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 5618 boolean result = false; 5619 if (inEditingMode()) { 5620 result = mWebTextView.requestFocus(direction, 5621 previouslyFocusedRect); 5622 } else { 5623 result = super.requestFocus(direction, previouslyFocusedRect); 5624 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 5625 // For cases such as GMail, where we gain focus from a direction, 5626 // we want to move to the first available link. 5627 // FIXME: If there are no visible links, we may not want to 5628 int fakeKeyDirection = 0; 5629 switch(direction) { 5630 case View.FOCUS_UP: 5631 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 5632 break; 5633 case View.FOCUS_DOWN: 5634 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 5635 break; 5636 case View.FOCUS_LEFT: 5637 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 5638 break; 5639 case View.FOCUS_RIGHT: 5640 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 5641 break; 5642 default: 5643 return result; 5644 } 5645 if (mNativeClass != 0 && !nativeHasCursorNode()) { 5646 navHandledKey(fakeKeyDirection, 1, true, 0, true); 5647 } 5648 } 5649 } 5650 return result; 5651 } 5652 5653 @Override 5654 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5655 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 5656 5657 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5658 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5659 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5660 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5661 5662 int measuredHeight = heightSize; 5663 int measuredWidth = widthSize; 5664 5665 // Grab the content size from WebViewCore. 5666 int contentHeight = contentToViewDimension(mContentHeight); 5667 int contentWidth = contentToViewDimension(mContentWidth); 5668 5669// Log.d(LOGTAG, "------- measure " + heightMode); 5670 5671 if (heightMode != MeasureSpec.EXACTLY) { 5672 mHeightCanMeasure = true; 5673 measuredHeight = contentHeight; 5674 if (heightMode == MeasureSpec.AT_MOST) { 5675 // If we are larger than the AT_MOST height, then our height can 5676 // no longer be measured and we should scroll internally. 5677 if (measuredHeight > heightSize) { 5678 measuredHeight = heightSize; 5679 mHeightCanMeasure = false; 5680 } 5681 } 5682 } else { 5683 mHeightCanMeasure = false; 5684 } 5685 if (mNativeClass != 0) { 5686 nativeSetHeightCanMeasure(mHeightCanMeasure); 5687 } 5688 // For the width, always use the given size unless unspecified. 5689 if (widthMode == MeasureSpec.UNSPECIFIED) { 5690 mWidthCanMeasure = true; 5691 measuredWidth = contentWidth; 5692 } else { 5693 mWidthCanMeasure = false; 5694 } 5695 5696 synchronized (this) { 5697 setMeasuredDimension(measuredWidth, measuredHeight); 5698 } 5699 } 5700 5701 @Override 5702 public boolean requestChildRectangleOnScreen(View child, 5703 Rect rect, 5704 boolean immediate) { 5705 rect.offset(child.getLeft() - child.getScrollX(), 5706 child.getTop() - child.getScrollY()); 5707 5708 int height = getViewHeightWithTitle(); 5709 int screenTop = mScrollY; 5710 int screenBottom = screenTop + height; 5711 5712 int scrollYDelta = 0; 5713 5714 if (rect.bottom > screenBottom) { 5715 int oneThirdOfScreenHeight = height / 3; 5716 if (rect.height() > 2 * oneThirdOfScreenHeight) { 5717 // If the rectangle is too tall to fit in the bottom two thirds 5718 // of the screen, place it at the top. 5719 scrollYDelta = rect.top - screenTop; 5720 } else { 5721 // If the rectangle will still fit on screen, we want its 5722 // top to be in the top third of the screen. 5723 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 5724 } 5725 } else if (rect.top < screenTop) { 5726 scrollYDelta = rect.top - screenTop; 5727 } 5728 5729 int width = getWidth() - getVerticalScrollbarWidth(); 5730 int screenLeft = mScrollX; 5731 int screenRight = screenLeft + width; 5732 5733 int scrollXDelta = 0; 5734 5735 if (rect.right > screenRight && rect.left > screenLeft) { 5736 if (rect.width() > width) { 5737 scrollXDelta += (rect.left - screenLeft); 5738 } else { 5739 scrollXDelta += (rect.right - screenRight); 5740 } 5741 } else if (rect.left < screenLeft) { 5742 scrollXDelta -= (screenLeft - rect.left); 5743 } 5744 5745 if ((scrollYDelta | scrollXDelta) != 0) { 5746 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 5747 } 5748 5749 return false; 5750 } 5751 5752 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 5753 String replace, int newStart, int newEnd) { 5754 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 5755 arg.mReplace = replace; 5756 arg.mNewStart = newStart; 5757 arg.mNewEnd = newEnd; 5758 mTextGeneration++; 5759 arg.mTextGeneration = mTextGeneration; 5760 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 5761 } 5762 5763 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 5764 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 5765 arg.mEvent = event; 5766 arg.mCurrentText = currentText; 5767 // Increase our text generation number, and pass it to webcore thread 5768 mTextGeneration++; 5769 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 5770 // WebKit's document state is not saved until about to leave the page. 5771 // To make sure the host application, like Browser, has the up to date 5772 // document state when it goes to background, we force to save the 5773 // document state. 5774 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 5775 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 5776 cursorData(), 1000); 5777 } 5778 5779 /* package */ WebViewCore getWebViewCore() { 5780 return mWebViewCore; 5781 } 5782 5783 //------------------------------------------------------------------------- 5784 // Methods can be called from a separate thread, like WebViewCore 5785 // If it needs to call the View system, it has to send message. 5786 //------------------------------------------------------------------------- 5787 5788 /** 5789 * General handler to receive message coming from webkit thread 5790 */ 5791 class PrivateHandler extends Handler { 5792 @Override 5793 public void handleMessage(Message msg) { 5794 // exclude INVAL_RECT_MSG_ID since it is frequently output 5795 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 5796 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 5797 > FIND_AGAIN ? Integer.toString(msg.what) 5798 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 5799 } 5800 if (mWebViewCore == null) { 5801 // after WebView's destroy() is called, skip handling messages. 5802 return; 5803 } 5804 switch (msg.what) { 5805 case REMEMBER_PASSWORD: { 5806 mDatabase.setUsernamePassword( 5807 msg.getData().getString("host"), 5808 msg.getData().getString("username"), 5809 msg.getData().getString("password")); 5810 ((Message) msg.obj).sendToTarget(); 5811 break; 5812 } 5813 case NEVER_REMEMBER_PASSWORD: { 5814 mDatabase.setUsernamePassword( 5815 msg.getData().getString("host"), null, null); 5816 ((Message) msg.obj).sendToTarget(); 5817 break; 5818 } 5819 case SWITCH_TO_SHORTPRESS: { 5820 // if mPreventDrag is not confirmed, cancel it so that it 5821 // won't block panning the page. 5822 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5823 mPreventDrag = PREVENT_DRAG_CANCEL; 5824 mPreventLongPress = false; 5825 mPreventDoubleTap = false; 5826 // remove the pending TOUCH_EVENT and send a cancel 5827 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5828 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 5829 ted.mAction = MotionEvent.ACTION_CANCEL; 5830 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5831 } 5832 if (mTouchMode == TOUCH_INIT_MODE) { 5833 mTouchMode = mFullScreenHolder == null 5834 ? TOUCH_SHORTPRESS_START_MODE 5835 : TOUCH_SHORTPRESS_MODE; 5836 updateSelection(); 5837 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5838 mTouchMode = TOUCH_DONE_MODE; 5839 } 5840 break; 5841 } 5842 case SWITCH_TO_LONGPRESS: { 5843 if (mPreventLongPress) { 5844 mTouchMode = TOUCH_DONE_MODE; 5845 WebViewCore.TouchEventData ted 5846 = new WebViewCore.TouchEventData(); 5847 ted.mAction = WebViewCore.ACTION_LONGPRESS; 5848 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 5849 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 5850 ted.mEventTime = SystemClock.uptimeMillis(); 5851 // metaState for long press is tricky. Should it be the state 5852 // when the press started or when the press was released? Or 5853 // some intermediary key state? For simplicity for now, we 5854 // don't set it. 5855 ted.mMetaState = 0; 5856 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5857 } else if (mPreventDrag != PREVENT_DRAG_YES) { 5858 mTouchMode = TOUCH_DONE_MODE; 5859 if (mFullScreenHolder == null) { 5860 performLongClick(); 5861 rebuildWebTextView(); 5862 } 5863 } 5864 break; 5865 } 5866 case RELEASE_SINGLE_TAP: { 5867 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5868 // if mPreventDrag is not confirmed, cancel it so that 5869 // it won't block panning the page. 5870 mPreventDrag = PREVENT_DRAG_CANCEL; 5871 mPreventLongPress = false; 5872 mPreventDoubleTap = false; 5873 // remove the pending TOUCH_EVENT and send a cancel 5874 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5875 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 5876 ted.mAction = MotionEvent.ACTION_CANCEL; 5877 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5878 } 5879 if (mPreventDrag != PREVENT_DRAG_YES) { 5880 mTouchMode = TOUCH_DONE_MODE; 5881 doShortPress(); 5882 } 5883 break; 5884 } 5885 case SCROLL_BY_MSG_ID: 5886 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 5887 break; 5888 case SYNC_SCROLL_TO_MSG_ID: 5889 if (mUserScroll) { 5890 // if user has scrolled explicitly, don't sync the 5891 // scroll position any more 5892 mUserScroll = false; 5893 break; 5894 } 5895 // fall through 5896 case SCROLL_TO_MSG_ID: 5897 if (setContentScrollTo(msg.arg1, msg.arg2)) { 5898 // if we can't scroll to the exact position due to pin, 5899 // send a message to WebCore to re-scroll when we get a 5900 // new picture 5901 mUserScroll = false; 5902 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 5903 msg.arg1, msg.arg2); 5904 } 5905 break; 5906 case SPAWN_SCROLL_TO_MSG_ID: 5907 spawnContentScrollTo(msg.arg1, msg.arg2); 5908 break; 5909 case UPDATE_ZOOM_RANGE: { 5910 WebViewCore.RestoreState restoreState 5911 = (WebViewCore.RestoreState) msg.obj; 5912 // mScrollX contains the new minPrefWidth 5913 updateZoomRange(restoreState, getViewWidth(), 5914 restoreState.mScrollX, false); 5915 break; 5916 } 5917 case NEW_PICTURE_MSG_ID: { 5918 WebSettings settings = mWebViewCore.getSettings(); 5919 // called for new content 5920 final int viewWidth = getViewWidth(); 5921 final WebViewCore.DrawData draw = 5922 (WebViewCore.DrawData) msg.obj; 5923 final Point viewSize = draw.mViewPoint; 5924 boolean useWideViewport = settings.getUseWideViewPort(); 5925 WebViewCore.RestoreState restoreState = draw.mRestoreState; 5926 boolean hasRestoreState = restoreState != null; 5927 if (hasRestoreState) { 5928 mInZoomOverview = false; 5929 updateZoomRange(restoreState, viewSize.x, 5930 draw.mMinPrefWidth, true); 5931 if (mInitialScaleInPercent > 0) { 5932 setNewZoomScale(mInitialScaleInPercent / 100.0f, 5933 mInitialScaleInPercent != mTextWrapScale * 100, 5934 false); 5935 } else if (restoreState.mViewScale > 0) { 5936 mTextWrapScale = restoreState.mTextWrapScale; 5937 setNewZoomScale(restoreState.mViewScale, false, 5938 false); 5939 } else { 5940 mInZoomOverview = useWideViewport 5941 && settings.getLoadWithOverviewMode(); 5942 float scale; 5943 if (mInZoomOverview) { 5944 scale = (float) viewWidth 5945 / DEFAULT_VIEWPORT_WIDTH; 5946 } else { 5947 scale = restoreState.mTextWrapScale; 5948 } 5949 setNewZoomScale(scale, Math.abs(scale 5950 - mTextWrapScale) >= 0.01f, false); 5951 } 5952 setContentScrollTo(restoreState.mScrollX, 5953 restoreState.mScrollY); 5954 // As we are on a new page, remove the WebTextView. This 5955 // is necessary for page loads driven by webkit, and in 5956 // particular when the user was on a password field, so 5957 // the WebTextView was visible. 5958 clearTextEntry(false); 5959 // update the zoom buttons as the scale can be changed 5960 if (getSettings().getBuiltInZoomControls()) { 5961 updateZoomButtonsEnabled(); 5962 } 5963 } 5964 // We update the layout (i.e. request a layout from the 5965 // view system) if the last view size that we sent to 5966 // WebCore matches the view size of the picture we just 5967 // received in the fixed dimension. 5968 final boolean updateLayout = viewSize.x == mLastWidthSent 5969 && viewSize.y == mLastHeightSent; 5970 recordNewContentSize(draw.mWidthHeight.x, 5971 draw.mWidthHeight.y 5972 + (mFindIsUp ? mFindHeight : 0), updateLayout); 5973 if (DebugFlags.WEB_VIEW) { 5974 Rect b = draw.mInvalRegion.getBounds(); 5975 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 5976 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 5977 } 5978 invalidateContentRect(draw.mInvalRegion.getBounds()); 5979 if (mPictureListener != null) { 5980 mPictureListener.onNewPicture(WebView.this, capturePicture()); 5981 } 5982 if (useWideViewport) { 5983 // limit mZoomOverviewWidth upper bound to 5984 // sMaxViewportWidth so that if the page doesn't behave 5985 // well, the WebView won't go insane. limit the lower 5986 // bound to match the default scale for mobile sites. 5987 mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math 5988 .max((int) (viewWidth / mDefaultScale), Math 5989 .max(draw.mMinPrefWidth, 5990 draw.mViewPoint.x))); 5991 } 5992 if (!mMinZoomScaleFixed) { 5993 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 5994 } 5995 if (!mDrawHistory && mInZoomOverview) { 5996 // fit the content width to the current view. Ignore 5997 // the rounding error case. 5998 if (Math.abs((viewWidth * mInvActualScale) 5999 - mZoomOverviewWidth) > 1) { 6000 setNewZoomScale((float) viewWidth 6001 / mZoomOverviewWidth, Math.abs(mActualScale 6002 - mTextWrapScale) < 0.01f, false); 6003 } 6004 } 6005 if (draw.mFocusSizeChanged && inEditingMode()) { 6006 mFocusSizeChanged = true; 6007 } 6008 if (hasRestoreState) { 6009 mViewManager.postReadyToDrawAll(); 6010 } 6011 break; 6012 } 6013 case WEBCORE_INITIALIZED_MSG_ID: 6014 // nativeCreate sets mNativeClass to a non-zero value 6015 nativeCreate(msg.arg1); 6016 break; 6017 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6018 // Make sure that the textfield is currently focused 6019 // and representing the same node as the pointer. 6020 if (inEditingMode() && 6021 mWebTextView.isSameTextField(msg.arg1)) { 6022 if (msg.getData().getBoolean("password")) { 6023 Spannable text = (Spannable) mWebTextView.getText(); 6024 int start = Selection.getSelectionStart(text); 6025 int end = Selection.getSelectionEnd(text); 6026 mWebTextView.setInPassword(true); 6027 // Restore the selection, which may have been 6028 // ruined by setInPassword. 6029 Spannable pword = 6030 (Spannable) mWebTextView.getText(); 6031 Selection.setSelection(pword, start, end); 6032 // If the text entry has created more events, ignore 6033 // this one. 6034 } else if (msg.arg2 == mTextGeneration) { 6035 mWebTextView.setTextAndKeepSelection( 6036 (String) msg.obj); 6037 } 6038 } 6039 break; 6040 case UPDATE_TEXT_SELECTION_MSG_ID: 6041 // If no textfield was in focus, and the user touched one, 6042 // causing it to send this message, then WebTextView has not 6043 // been set up yet. Rebuild it so it can set its selection. 6044 rebuildWebTextView(); 6045 if (inEditingMode() 6046 && mWebTextView.isSameTextField(msg.arg1) 6047 && msg.arg2 == mTextGeneration) { 6048 WebViewCore.TextSelectionData tData 6049 = (WebViewCore.TextSelectionData) msg.obj; 6050 mWebTextView.setSelectionFromWebKit(tData.mStart, 6051 tData.mEnd); 6052 } 6053 break; 6054 case RETURN_LABEL: 6055 if (inEditingMode() 6056 && mWebTextView.isSameTextField(msg.arg1)) { 6057 mWebTextView.setHint((String) msg.obj); 6058 InputMethodManager imm 6059 = InputMethodManager.peekInstance(); 6060 // The hint is propagated to the IME in 6061 // onCreateInputConnection. If the IME is already 6062 // active, restart it so that its hint text is updated. 6063 if (imm != null && imm.isActive(mWebTextView)) { 6064 imm.restartInput(mWebTextView); 6065 } 6066 } 6067 break; 6068 case MOVE_OUT_OF_PLUGIN: 6069 navHandledKey(msg.arg1, 1, false, 0, true); 6070 break; 6071 case UPDATE_TEXT_ENTRY_MSG_ID: 6072 // this is sent after finishing resize in WebViewCore. Make 6073 // sure the text edit box is still on the screen. 6074 if (inEditingMode() && nativeCursorIsTextInput()) { 6075 mWebTextView.bringIntoView(); 6076 rebuildWebTextView(); 6077 } 6078 break; 6079 case CLEAR_TEXT_ENTRY: 6080 clearTextEntry(false); 6081 break; 6082 case INVAL_RECT_MSG_ID: { 6083 Rect r = (Rect)msg.obj; 6084 if (r == null) { 6085 invalidate(); 6086 } else { 6087 // we need to scale r from content into view coords, 6088 // which viewInvalidate() does for us 6089 viewInvalidate(r.left, r.top, r.right, r.bottom); 6090 } 6091 break; 6092 } 6093 case IMMEDIATE_REPAINT_MSG_ID: { 6094 invalidate(); 6095 break; 6096 } 6097 case SET_ROOT_LAYER_MSG_ID: { 6098 nativeSetRootLayer(msg.arg1); 6099 invalidate(); 6100 break; 6101 } 6102 case REQUEST_FORM_DATA: 6103 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6104 if (mWebTextView.isSameTextField(msg.arg1)) { 6105 mWebTextView.setAdapterCustom(adapter); 6106 } 6107 break; 6108 case RESUME_WEBCORE_PRIORITY: 6109 WebViewCore.resumePriority(); 6110 break; 6111 6112 case LONG_PRESS_CENTER: 6113 // as this is shared by keydown and trackballdown, reset all 6114 // the states 6115 mGotCenterDown = false; 6116 mTrackballDown = false; 6117 performLongClick(); 6118 break; 6119 6120 case WEBCORE_NEED_TOUCH_EVENTS: 6121 mForwardTouchEvents = (msg.arg1 != 0); 6122 break; 6123 6124 case PREVENT_TOUCH_ID: 6125 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 6126 // dont override if mPreventDrag has been set to no due 6127 // to time out 6128 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 6129 mPreventDrag = (msg.arg2 & TOUCH_PREVENT_DRAG) 6130 == TOUCH_PREVENT_DRAG ? PREVENT_DRAG_YES 6131 : PREVENT_DRAG_NO; 6132 if (mPreventDrag == PREVENT_DRAG_YES) { 6133 mTouchMode = TOUCH_DONE_MODE; 6134 } else { 6135 mPreventLongPress = 6136 (msg.arg2 & TOUCH_PREVENT_LONGPRESS) 6137 == TOUCH_PREVENT_LONGPRESS; 6138 mPreventDoubleTap = 6139 (msg.arg2 & TOUCH_PREVENT_DOUBLETAP) 6140 == TOUCH_PREVENT_DOUBLETAP; 6141 } 6142 } 6143 } 6144 break; 6145 6146 case REQUEST_KEYBOARD: 6147 if (msg.arg1 == 0) { 6148 hideSoftKeyboard(); 6149 } else { 6150 displaySoftKeyboard(1 == msg.arg2); 6151 } 6152 break; 6153 6154 case FIND_AGAIN: 6155 // Ignore if find has been dismissed. 6156 if (mFindIsUp) { 6157 findAll(mLastFind); 6158 } 6159 break; 6160 6161 case DRAG_HELD_MOTIONLESS: 6162 mHeldMotionless = MOTIONLESS_TRUE; 6163 invalidate(); 6164 // fall through to keep scrollbars awake 6165 6166 case AWAKEN_SCROLL_BARS: 6167 if (mTouchMode == TOUCH_DRAG_MODE 6168 && mHeldMotionless == MOTIONLESS_TRUE) { 6169 awakenScrollBars(ViewConfiguration 6170 .getScrollDefaultDelay(), false); 6171 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6172 .obtainMessage(AWAKEN_SCROLL_BARS), 6173 ViewConfiguration.getScrollDefaultDelay()); 6174 } 6175 break; 6176 6177 case DO_MOTION_UP: 6178 doMotionUp(msg.arg1, msg.arg2); 6179 break; 6180 6181 case SHOW_FULLSCREEN: { 6182 WebViewCore.PluginFullScreenData data 6183 = (WebViewCore.PluginFullScreenData) msg.obj; 6184 if (data.mNpp != 0 && data.mView != null) { 6185 if (mFullScreenHolder != null) { 6186 Log.w(LOGTAG, 6187 "Should not have another full screen."); 6188 mFullScreenHolder.dismiss(); 6189 } 6190 mFullScreenHolder = new PluginFullScreenHolder( 6191 WebView.this, data.mNpp); 6192 // as we are sharing the View between full screen and 6193 // embedded mode, we have to remove the 6194 // AbsoluteLayout.LayoutParams set by embedded mode to 6195 // ViewGroup.LayoutParams before adding it to the dialog 6196 data.mView.setLayoutParams(new ViewGroup.LayoutParams( 6197 ViewGroup.LayoutParams.FILL_PARENT, 6198 ViewGroup.LayoutParams.FILL_PARENT)); 6199 mFullScreenHolder.setContentView(data.mView); 6200 mFullScreenHolder.setCancelable(false); 6201 mFullScreenHolder.setCanceledOnTouchOutside(false); 6202 mFullScreenHolder.show(); 6203 } else if (mFullScreenHolder == null) { 6204 // this may happen if user dismisses the fullscreen and 6205 // then the WebCore re-position message finally reached 6206 // the UI thread. 6207 break; 6208 } 6209 // move the matching embedded view fully into the view so 6210 // that touch will be valid instead of rejected due to out 6211 // of the visible bounds 6212 // TODO: do we need to preserve the original position and 6213 // scale so that we can revert it when leaving the full 6214 // screen mode? 6215 int x = contentToViewX(data.mDocX); 6216 int y = contentToViewY(data.mDocY); 6217 int width = contentToViewDimension(data.mDocWidth); 6218 int height = contentToViewDimension(data.mDocHeight); 6219 int viewWidth = getViewWidth(); 6220 int viewHeight = getViewHeight(); 6221 int newX = mScrollX; 6222 int newY = mScrollY; 6223 if (x < mScrollX) { 6224 newX = x + (width > viewWidth 6225 ? (width - viewWidth) / 2 : 0); 6226 } else if (x + width > mScrollX + viewWidth) { 6227 newX = x + width - viewWidth - (width > viewWidth 6228 ? (width - viewWidth) / 2 : 0); 6229 } 6230 if (y < mScrollY) { 6231 newY = y + (height > viewHeight 6232 ? (height - viewHeight) / 2 : 0); 6233 } else if (y + height > mScrollY + viewHeight) { 6234 newY = y + height - viewHeight - (height > viewHeight 6235 ? (height - viewHeight) / 2 : 0); 6236 } 6237 scrollTo(newX, newY); 6238 if (width > viewWidth || height > viewHeight) { 6239 mZoomCenterX = viewWidth * .5f; 6240 mZoomCenterY = viewHeight * .5f; 6241 // do not change text wrap scale so that there is no 6242 // reflow 6243 setNewZoomScale(mActualScale 6244 / Math.max((float) width / viewWidth, 6245 (float) height / viewHeight), false, 6246 false); 6247 } 6248 // Now update the bound 6249 mFullScreenHolder.updateBound(contentToViewX(data.mDocX) 6250 - mScrollX, contentToViewY(data.mDocY) - mScrollY, 6251 contentToViewDimension(data.mDocWidth), 6252 contentToViewDimension(data.mDocHeight)); 6253 } 6254 break; 6255 6256 case HIDE_FULLSCREEN: 6257 if (mFullScreenHolder != null) { 6258 mFullScreenHolder.dismiss(); 6259 mFullScreenHolder = null; 6260 } 6261 break; 6262 6263 case DOM_FOCUS_CHANGED: 6264 if (inEditingMode()) { 6265 nativeClearCursor(); 6266 rebuildWebTextView(); 6267 } 6268 break; 6269 6270 case SHOW_RECT_MSG_ID: { 6271 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6272 int x = mScrollX; 6273 int left = contentToViewX(data.mLeft); 6274 int width = contentToViewDimension(data.mWidth); 6275 int maxWidth = contentToViewDimension(data.mContentWidth); 6276 int viewWidth = getViewWidth(); 6277 if (width < viewWidth) { 6278 // center align 6279 x += left + width / 2 - mScrollX - viewWidth / 2; 6280 } else { 6281 x += (int) (left + data.mXPercentInDoc * width 6282 - mScrollX - data.mXPercentInView * viewWidth); 6283 } 6284 if (DebugFlags.WEB_VIEW) { 6285 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6286 width + ",maxWidth=" + maxWidth + 6287 ",viewWidth=" + viewWidth + ",x=" 6288 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6289 ",xPercentInView=" + data.mXPercentInView+ ")"); 6290 } 6291 // use the passing content width to cap x as the current 6292 // mContentWidth may not be updated yet 6293 x = Math.max(0, 6294 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6295 int top = contentToViewY(data.mTop); 6296 int height = contentToViewDimension(data.mHeight); 6297 int maxHeight = contentToViewDimension(data.mContentHeight); 6298 int viewHeight = getViewHeight(); 6299 int y = (int) (top + data.mYPercentInDoc * height - 6300 data.mYPercentInView * viewHeight); 6301 if (DebugFlags.WEB_VIEW) { 6302 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6303 height + ",maxHeight=" + maxHeight + 6304 ",viewHeight=" + viewHeight + ",y=" 6305 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6306 ",yPercentInView=" + data.mYPercentInView+ ")"); 6307 } 6308 // use the passing content height to cap y as the current 6309 // mContentHeight may not be updated yet 6310 y = Math.max(0, 6311 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6312 // We need to take into account the visible title height 6313 // when scrolling since y is an absolute view position. 6314 y = Math.max(0, y - getVisibleTitleHeight()); 6315 scrollTo(x, y); 6316 } 6317 break; 6318 6319 default: 6320 super.handleMessage(msg); 6321 break; 6322 } 6323 } 6324 } 6325 6326 // Class used to use a dropdown for a <select> element 6327 private class InvokeListBox implements Runnable { 6328 // Whether the listbox allows multiple selection. 6329 private boolean mMultiple; 6330 // Passed in to a list with multiple selection to tell 6331 // which items are selected. 6332 private int[] mSelectedArray; 6333 // Passed in to a list with single selection to tell 6334 // where the initial selection is. 6335 private int mSelection; 6336 6337 private Container[] mContainers; 6338 6339 // Need these to provide stable ids to my ArrayAdapter, 6340 // which normally does not have stable ids. (Bug 1250098) 6341 private class Container extends Object { 6342 /** 6343 * Possible values for mEnabled. Keep in sync with OptionStatus in 6344 * WebViewCore.cpp 6345 */ 6346 final static int OPTGROUP = -1; 6347 final static int OPTION_DISABLED = 0; 6348 final static int OPTION_ENABLED = 1; 6349 6350 String mString; 6351 int mEnabled; 6352 int mId; 6353 6354 public String toString() { 6355 return mString; 6356 } 6357 } 6358 6359 /** 6360 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6361 * and allow filtering. 6362 */ 6363 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6364 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6365 super(context, 6366 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6367 com.android.internal.R.layout.select_dialog_singlechoice, 6368 objects); 6369 } 6370 6371 @Override 6372 public View getView(int position, View convertView, 6373 ViewGroup parent) { 6374 // Always pass in null so that we will get a new CheckedTextView 6375 // Otherwise, an item which was previously used as an <optgroup> 6376 // element (i.e. has no check), could get used as an <option> 6377 // element, which needs a checkbox/radio, but it would not have 6378 // one. 6379 convertView = super.getView(position, null, parent); 6380 Container c = item(position); 6381 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6382 // ListView does not draw dividers between disabled and 6383 // enabled elements. Use a LinearLayout to provide dividers 6384 LinearLayout layout = new LinearLayout(mContext); 6385 layout.setOrientation(LinearLayout.VERTICAL); 6386 if (position > 0) { 6387 View dividerTop = new View(mContext); 6388 dividerTop.setBackgroundResource( 6389 android.R.drawable.divider_horizontal_bright); 6390 layout.addView(dividerTop); 6391 } 6392 6393 if (Container.OPTGROUP == c.mEnabled) { 6394 // Currently select_dialog_multichoice and 6395 // select_dialog_singlechoice are CheckedTextViews. If 6396 // that changes, the class cast will no longer be valid. 6397 Assert.assertTrue( 6398 convertView instanceof CheckedTextView); 6399 ((CheckedTextView) convertView).setCheckMarkDrawable( 6400 null); 6401 } else { 6402 // c.mEnabled == Container.OPTION_DISABLED 6403 // Draw the disabled element in a disabled state. 6404 convertView.setEnabled(false); 6405 } 6406 6407 layout.addView(convertView); 6408 if (position < getCount() - 1) { 6409 View dividerBottom = new View(mContext); 6410 dividerBottom.setBackgroundResource( 6411 android.R.drawable.divider_horizontal_bright); 6412 layout.addView(dividerBottom); 6413 } 6414 return layout; 6415 } 6416 return convertView; 6417 } 6418 6419 @Override 6420 public boolean hasStableIds() { 6421 // AdapterView's onChanged method uses this to determine whether 6422 // to restore the old state. Return false so that the old (out 6423 // of date) state does not replace the new, valid state. 6424 return false; 6425 } 6426 6427 private Container item(int position) { 6428 if (position < 0 || position >= getCount()) { 6429 return null; 6430 } 6431 return (Container) getItem(position); 6432 } 6433 6434 @Override 6435 public long getItemId(int position) { 6436 Container item = item(position); 6437 if (item == null) { 6438 return -1; 6439 } 6440 return item.mId; 6441 } 6442 6443 @Override 6444 public boolean areAllItemsEnabled() { 6445 return false; 6446 } 6447 6448 @Override 6449 public boolean isEnabled(int position) { 6450 Container item = item(position); 6451 if (item == null) { 6452 return false; 6453 } 6454 return Container.OPTION_ENABLED == item.mEnabled; 6455 } 6456 } 6457 6458 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 6459 mMultiple = true; 6460 mSelectedArray = selected; 6461 6462 int length = array.length; 6463 mContainers = new Container[length]; 6464 for (int i = 0; i < length; i++) { 6465 mContainers[i] = new Container(); 6466 mContainers[i].mString = array[i]; 6467 mContainers[i].mEnabled = enabled[i]; 6468 mContainers[i].mId = i; 6469 } 6470 } 6471 6472 private InvokeListBox(String[] array, int[] enabled, int selection) { 6473 mSelection = selection; 6474 mMultiple = false; 6475 6476 int length = array.length; 6477 mContainers = new Container[length]; 6478 for (int i = 0; i < length; i++) { 6479 mContainers[i] = new Container(); 6480 mContainers[i].mString = array[i]; 6481 mContainers[i].mEnabled = enabled[i]; 6482 mContainers[i].mId = i; 6483 } 6484 } 6485 6486 /* 6487 * Whenever the data set changes due to filtering, this class ensures 6488 * that the checked item remains checked. 6489 */ 6490 private class SingleDataSetObserver extends DataSetObserver { 6491 private long mCheckedId; 6492 private ListView mListView; 6493 private Adapter mAdapter; 6494 6495 /* 6496 * Create a new observer. 6497 * @param id The ID of the item to keep checked. 6498 * @param l ListView for getting and clearing the checked states 6499 * @param a Adapter for getting the IDs 6500 */ 6501 public SingleDataSetObserver(long id, ListView l, Adapter a) { 6502 mCheckedId = id; 6503 mListView = l; 6504 mAdapter = a; 6505 } 6506 6507 public void onChanged() { 6508 // The filter may have changed which item is checked. Find the 6509 // item that the ListView thinks is checked. 6510 int position = mListView.getCheckedItemPosition(); 6511 long id = mAdapter.getItemId(position); 6512 if (mCheckedId != id) { 6513 // Clear the ListView's idea of the checked item, since 6514 // it is incorrect 6515 mListView.clearChoices(); 6516 // Search for mCheckedId. If it is in the filtered list, 6517 // mark it as checked 6518 int count = mAdapter.getCount(); 6519 for (int i = 0; i < count; i++) { 6520 if (mAdapter.getItemId(i) == mCheckedId) { 6521 mListView.setItemChecked(i, true); 6522 break; 6523 } 6524 } 6525 } 6526 } 6527 6528 public void onInvalidate() {} 6529 } 6530 6531 public void run() { 6532 final ListView listView = (ListView) LayoutInflater.from(mContext) 6533 .inflate(com.android.internal.R.layout.select_dialog, null); 6534 final MyArrayListAdapter adapter = new 6535 MyArrayListAdapter(mContext, mContainers, mMultiple); 6536 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 6537 .setView(listView).setCancelable(true) 6538 .setInverseBackgroundForced(true); 6539 6540 if (mMultiple) { 6541 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 6542 public void onClick(DialogInterface dialog, int which) { 6543 mWebViewCore.sendMessage( 6544 EventHub.LISTBOX_CHOICES, 6545 adapter.getCount(), 0, 6546 listView.getCheckedItemPositions()); 6547 }}); 6548 b.setNegativeButton(android.R.string.cancel, 6549 new DialogInterface.OnClickListener() { 6550 public void onClick(DialogInterface dialog, int which) { 6551 mWebViewCore.sendMessage( 6552 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6553 }}); 6554 } 6555 final AlertDialog dialog = b.create(); 6556 listView.setAdapter(adapter); 6557 listView.setFocusableInTouchMode(true); 6558 // There is a bug (1250103) where the checks in a ListView with 6559 // multiple items selected are associated with the positions, not 6560 // the ids, so the items do not properly retain their checks when 6561 // filtered. Do not allow filtering on multiple lists until 6562 // that bug is fixed. 6563 6564 listView.setTextFilterEnabled(!mMultiple); 6565 if (mMultiple) { 6566 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 6567 int length = mSelectedArray.length; 6568 for (int i = 0; i < length; i++) { 6569 listView.setItemChecked(mSelectedArray[i], true); 6570 } 6571 } else { 6572 listView.setOnItemClickListener(new OnItemClickListener() { 6573 public void onItemClick(AdapterView parent, View v, 6574 int position, long id) { 6575 mWebViewCore.sendMessage( 6576 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 6577 dialog.dismiss(); 6578 } 6579 }); 6580 if (mSelection != -1) { 6581 listView.setSelection(mSelection); 6582 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 6583 listView.setItemChecked(mSelection, true); 6584 DataSetObserver observer = new SingleDataSetObserver( 6585 adapter.getItemId(mSelection), listView, adapter); 6586 adapter.registerDataSetObserver(observer); 6587 } 6588 } 6589 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 6590 public void onCancel(DialogInterface dialog) { 6591 mWebViewCore.sendMessage( 6592 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6593 } 6594 }); 6595 dialog.show(); 6596 } 6597 } 6598 6599 /* 6600 * Request a dropdown menu for a listbox with multiple selection. 6601 * 6602 * @param array Labels for the listbox. 6603 * @param enabledArray State for each element in the list. See static 6604 * integers in Container class. 6605 * @param selectedArray Which positions are initally selected. 6606 */ 6607 void requestListBox(String[] array, int[] enabledArray, int[] 6608 selectedArray) { 6609 mPrivateHandler.post( 6610 new InvokeListBox(array, enabledArray, selectedArray)); 6611 } 6612 6613 private void updateZoomRange(WebViewCore.RestoreState restoreState, 6614 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 6615 if (restoreState.mMinScale == 0) { 6616 if (restoreState.mMobileSite) { 6617 if (minPrefWidth > Math.max(0, viewWidth)) { 6618 mMinZoomScale = (float) viewWidth / minPrefWidth; 6619 mMinZoomScaleFixed = false; 6620 if (updateZoomOverview) { 6621 WebSettings settings = getSettings(); 6622 mInZoomOverview = settings.getUseWideViewPort() && 6623 settings.getLoadWithOverviewMode(); 6624 } 6625 } else { 6626 mMinZoomScale = restoreState.mDefaultScale; 6627 mMinZoomScaleFixed = true; 6628 } 6629 } else { 6630 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 6631 mMinZoomScaleFixed = false; 6632 } 6633 } else { 6634 mMinZoomScale = restoreState.mMinScale; 6635 mMinZoomScaleFixed = true; 6636 } 6637 if (restoreState.mMaxScale == 0) { 6638 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 6639 } else { 6640 mMaxZoomScale = restoreState.mMaxScale; 6641 } 6642 } 6643 6644 /* 6645 * Request a dropdown menu for a listbox with single selection or a single 6646 * <select> element. 6647 * 6648 * @param array Labels for the listbox. 6649 * @param enabledArray State for each element in the list. See static 6650 * integers in Container class. 6651 * @param selection Which position is initally selected. 6652 */ 6653 void requestListBox(String[] array, int[] enabledArray, int selection) { 6654 mPrivateHandler.post( 6655 new InvokeListBox(array, enabledArray, selection)); 6656 } 6657 6658 // called by JNI 6659 private void sendMoveFocus(int frame, int node) { 6660 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 6661 new WebViewCore.CursorData(frame, node, 0, 0)); 6662 } 6663 6664 // called by JNI 6665 private void sendMoveMouse(int frame, int node, int x, int y) { 6666 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 6667 new WebViewCore.CursorData(frame, node, x, y)); 6668 } 6669 6670 /* 6671 * Send a mouse move event to the webcore thread. 6672 * 6673 * @param removeFocus Pass true if the "mouse" cursor is now over a node 6674 * which wants key events, but it is not the focus. This 6675 * will make the visual appear as though nothing is in 6676 * focus. Remove the WebTextView, if present, and stop 6677 * drawing the blinking caret. 6678 * called by JNI 6679 */ 6680 private void sendMoveMouseIfLatest(boolean removeFocus) { 6681 if (removeFocus) { 6682 clearTextEntry(true); 6683 } 6684 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 6685 cursorData()); 6686 } 6687 6688 // called by JNI 6689 private void sendMotionUp(int touchGeneration, 6690 int frame, int node, int x, int y) { 6691 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6692 touchUpData.mMoveGeneration = touchGeneration; 6693 touchUpData.mFrame = frame; 6694 touchUpData.mNode = node; 6695 touchUpData.mX = x; 6696 touchUpData.mY = y; 6697 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6698 } 6699 6700 6701 private int getScaledMaxXScroll() { 6702 int width; 6703 if (mHeightCanMeasure == false) { 6704 width = getViewWidth() / 4; 6705 } else { 6706 Rect visRect = new Rect(); 6707 calcOurVisibleRect(visRect); 6708 width = visRect.width() / 2; 6709 } 6710 // FIXME the divisor should be retrieved from somewhere 6711 return viewToContentX(width); 6712 } 6713 6714 private int getScaledMaxYScroll() { 6715 int height; 6716 if (mHeightCanMeasure == false) { 6717 height = getViewHeight() / 4; 6718 } else { 6719 Rect visRect = new Rect(); 6720 calcOurVisibleRect(visRect); 6721 height = visRect.height() / 2; 6722 } 6723 // FIXME the divisor should be retrieved from somewhere 6724 // the closest thing today is hard-coded into ScrollView.java 6725 // (from ScrollView.java, line 363) int maxJump = height/2; 6726 return Math.round(height * mInvActualScale); 6727 } 6728 6729 /** 6730 * Called by JNI to invalidate view 6731 */ 6732 private void viewInvalidate() { 6733 invalidate(); 6734 } 6735 6736 // return true if the key was handled 6737 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 6738 long time, boolean ignorePlugin) { 6739 if (mNativeClass == 0) { 6740 return false; 6741 } 6742 if (ignorePlugin == false && nativeFocusIsPlugin()) { 6743 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 6744 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 6745 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 6746 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 6747 , 0, 0, 0); 6748 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 6749 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 6750 return true; 6751 } 6752 mLastCursorTime = time; 6753 mLastCursorBounds = nativeGetCursorRingBounds(); 6754 boolean keyHandled 6755 = nativeMoveCursor(keyCode, count, noScroll) == false; 6756 if (DebugFlags.WEB_VIEW) { 6757 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 6758 + " mLastCursorTime=" + mLastCursorTime 6759 + " handled=" + keyHandled); 6760 } 6761 if (keyHandled == false || mHeightCanMeasure == false) { 6762 return keyHandled; 6763 } 6764 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 6765 if (contentCursorRingBounds.isEmpty()) return keyHandled; 6766 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 6767 Rect visRect = new Rect(); 6768 calcOurVisibleRect(visRect); 6769 Rect outset = new Rect(visRect); 6770 int maxXScroll = visRect.width() / 2; 6771 int maxYScroll = visRect.height() / 2; 6772 outset.inset(-maxXScroll, -maxYScroll); 6773 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 6774 return keyHandled; 6775 } 6776 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 6777 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 6778 maxXScroll); 6779 if (maxH > 0) { 6780 pinScrollBy(maxH, 0, true, 0); 6781 } else { 6782 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 6783 -maxXScroll); 6784 if (maxH < 0) { 6785 pinScrollBy(maxH, 0, true, 0); 6786 } 6787 } 6788 if (mLastCursorBounds.isEmpty()) return keyHandled; 6789 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 6790 return keyHandled; 6791 } 6792 if (DebugFlags.WEB_VIEW) { 6793 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 6794 + contentCursorRingBounds); 6795 } 6796 requestRectangleOnScreen(viewCursorRingBounds); 6797 mUserScroll = true; 6798 return keyHandled; 6799 } 6800 6801 /** 6802 * Set the background color. It's white by default. Pass 6803 * zero to make the view transparent. 6804 * @param color the ARGB color described by Color.java 6805 */ 6806 public void setBackgroundColor(int color) { 6807 mBackgroundColor = color; 6808 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 6809 } 6810 6811 public void debugDump() { 6812 nativeDebugDump(); 6813 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 6814 } 6815 6816 /** 6817 * Draw the HTML page into the specified canvas. This call ignores any 6818 * view-specific zoom, scroll offset, or other changes. It does not draw 6819 * any view-specific chrome, such as progress or URL bars. 6820 * 6821 * @hide only needs to be accessible to Browser and testing 6822 */ 6823 public void drawPage(Canvas canvas) { 6824 mWebViewCore.drawContentPicture(canvas, 0, false, false); 6825 } 6826 6827 /** 6828 * Set the time to wait between passing touches to WebCore. See also the 6829 * TOUCH_SENT_INTERVAL member for further discussion. 6830 * 6831 * @hide This is only used by the DRT test application. 6832 */ 6833 public void setTouchInterval(int interval) { 6834 mCurrentTouchInterval = interval; 6835 } 6836 6837 /** 6838 * Update our cache with updatedText. 6839 * @param updatedText The new text to put in our cache. 6840 */ 6841 /* package */ void updateCachedTextfield(String updatedText) { 6842 // Also place our generation number so that when we look at the cache 6843 // we recognize that it is up to date. 6844 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 6845 } 6846 6847 private native int nativeCacheHitFramePointer(); 6848 private native Rect nativeCacheHitNodeBounds(); 6849 private native int nativeCacheHitNodePointer(); 6850 /* package */ native void nativeClearCursor(); 6851 private native void nativeCreate(int ptr); 6852 private native int nativeCursorFramePointer(); 6853 private native Rect nativeCursorNodeBounds(); 6854 private native int nativeCursorNodePointer(); 6855 /* package */ native boolean nativeCursorMatchesFocus(); 6856 private native boolean nativeCursorIntersects(Rect visibleRect); 6857 private native boolean nativeCursorIsAnchor(); 6858 private native boolean nativeCursorIsTextInput(); 6859 private native Point nativeCursorPosition(); 6860 private native String nativeCursorText(); 6861 /** 6862 * Returns true if the native cursor node says it wants to handle key events 6863 * (ala plugins). This can only be called if mNativeClass is non-zero! 6864 */ 6865 private native boolean nativeCursorWantsKeyEvents(); 6866 private native void nativeDebugDump(); 6867 private native void nativeDestroy(); 6868 private native boolean nativeEvaluateLayersAnimations(); 6869 private native void nativeDrawExtras(Canvas canvas, int extra); 6870 private native void nativeDumpDisplayTree(String urlOrNull); 6871 private native int nativeFindAll(String findLower, String findUpper); 6872 private native void nativeFindNext(boolean forward); 6873 /* package */ native int nativeFocusCandidateFramePointer(); 6874 private native boolean nativeFocusCandidateIsPassword(); 6875 private native boolean nativeFocusCandidateIsRtlText(); 6876 private native boolean nativeFocusCandidateIsTextInput(); 6877 /* package */ native int nativeFocusCandidateMaxLength(); 6878 /* package */ native String nativeFocusCandidateName(); 6879 private native Rect nativeFocusCandidateNodeBounds(); 6880 private native int nativeFocusCandidatePointer(); 6881 private native String nativeFocusCandidateText(); 6882 private native int nativeFocusCandidateTextSize(); 6883 /** 6884 * Returns an integer corresponding to WebView.cpp::type. 6885 * See WebTextView.setType() 6886 */ 6887 private native int nativeFocusCandidateType(); 6888 private native boolean nativeFocusIsPlugin(); 6889 /* package */ native int nativeFocusNodePointer(); 6890 private native Rect nativeGetCursorRingBounds(); 6891 private native String nativeGetSelection(); 6892 private native boolean nativeHasCursorNode(); 6893 private native boolean nativeHasFocusNode(); 6894 private native void nativeHideCursor(); 6895 private native String nativeImageURI(int x, int y); 6896 private native void nativeInstrumentReport(); 6897 /* package */ native boolean nativeMoveCursorToNextTextInput(); 6898 // return true if the page has been scrolled 6899 private native boolean nativeMotionUp(int x, int y, int slop); 6900 // returns false if it handled the key 6901 private native boolean nativeMoveCursor(int keyCode, int count, 6902 boolean noScroll); 6903 private native int nativeMoveGeneration(); 6904 private native void nativeMoveSelection(int x, int y, 6905 boolean extendSelection); 6906 private native boolean nativePointInNavCache(int x, int y, int slop); 6907 // Like many other of our native methods, you must make sure that 6908 // mNativeClass is not null before calling this method. 6909 private native void nativeRecordButtons(boolean focused, 6910 boolean pressed, boolean invalidate); 6911 private native void nativeSelectBestAt(Rect rect); 6912 private native void nativeSetFindIsEmpty(); 6913 private native void nativeSetFindIsUp(boolean isUp); 6914 private native void nativeSetFollowedLink(boolean followed); 6915 private native void nativeSetHeightCanMeasure(boolean measure); 6916 private native void nativeSetRootLayer(int layer); 6917 private native void nativeSetSelectionPointer(boolean set, 6918 float scale, int x, int y, boolean extendSelection); 6919 private native void nativeSetSelectionRegion(boolean set); 6920 private native int nativeTextGeneration(); 6921 // Never call this version except by updateCachedTextfield(String) - 6922 // we always want to pass in our generation number. 6923 private native void nativeUpdateCachedTextfield(String updatedText, 6924 int generation); 6925 // return NO_LEFTEDGE means failure. 6926 private static final int NO_LEFTEDGE = -1; 6927 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 6928} 6929