WebView.java revision d7625dd2810e164f270fc680f8b547aa016d8892
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.BitmapFactory; 28import android.graphics.BitmapShader; 29import android.graphics.Canvas; 30import android.graphics.Color; 31import android.graphics.Interpolator; 32import android.graphics.Paint; 33import android.graphics.Picture; 34import android.graphics.Point; 35import android.graphics.Rect; 36import android.graphics.Region; 37import android.graphics.Shader; 38import android.graphics.drawable.Drawable; 39import android.net.http.SslCertificate; 40import android.net.Uri; 41import android.os.Bundle; 42import android.os.Handler; 43import android.os.Message; 44import android.os.ServiceManager; 45import android.os.SystemClock; 46import android.text.IClipboard; 47import android.text.Selection; 48import android.text.Spannable; 49import android.util.AttributeSet; 50import android.util.EventLog; 51import android.util.Log; 52import android.util.TypedValue; 53import android.view.Gravity; 54import android.view.KeyEvent; 55import android.view.LayoutInflater; 56import android.view.MotionEvent; 57import android.view.ScaleGestureDetector; 58import android.view.SoundEffectConstants; 59import android.view.VelocityTracker; 60import android.view.View; 61import android.view.ViewConfiguration; 62import android.view.ViewGroup; 63import android.view.ViewTreeObserver; 64import android.view.animation.AlphaAnimation; 65import android.view.inputmethod.EditorInfo; 66import android.view.inputmethod.InputConnection; 67import android.view.inputmethod.InputMethodManager; 68import android.webkit.WebTextView.AutoCompleteAdapter; 69import android.webkit.WebViewCore.EventHub; 70import android.widget.AbsoluteLayout; 71import android.widget.Adapter; 72import android.widget.AdapterView; 73import android.widget.ArrayAdapter; 74import android.widget.CheckedTextView; 75import android.widget.FrameLayout; 76import android.widget.LinearLayout; 77import android.widget.ListView; 78import android.widget.OverScroller; 79import android.widget.Toast; 80import android.widget.ZoomButtonsController; 81import android.widget.ZoomControls; 82import android.widget.AdapterView.OnItemClickListener; 83 84import java.io.File; 85import java.io.FileInputStream; 86import java.io.FileNotFoundException; 87import java.io.FileOutputStream; 88import java.io.IOException; 89import java.net.URLDecoder; 90import java.util.ArrayList; 91import java.util.List; 92import java.util.HashMap; 93import java.util.Map; 94import java.util.Set; 95 96import junit.framework.Assert; 97 98/** 99 * <p>A View that displays web pages. This class is the basis upon which you 100 * can roll your own web browser or simply display some online content within your Activity. 101 * It uses the WebKit rendering engine to display 102 * web pages and includes methods to navigate forward and backward 103 * through a history, zoom in and out, perform text searches and more.</p> 104 * <p>To enable the built-in zoom, set 105 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 106 * (introduced in API version 3). 107 * <p>Note that, in order for your Activity to access the Internet and load web pages 108 * in a WebView, you must add the <var>INTERNET</var> permissions to your 109 * Android Manifest file:</p> 110 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 111 * 112 * <p>This must be a child of the <code><manifest></code> element.</p> 113 * 114 * <h3>Basic usage</h3> 115 * 116 * <p>By default, a WebView provides no browser-like widgets, does not 117 * enable JavaScript and errors will be ignored. If your goal is only 118 * to display some HTML as a part of your UI, this is probably fine; 119 * the user won't need to interact with the web page beyond reading 120 * it, and the web page won't need to interact with the user. If you 121 * actually want a fully blown web browser, then you probably want to 122 * invoke the Browser application with your URL rather than show it 123 * with a WebView. See {@link android.content.Intent} for more information.</p> 124 * 125 * <pre class="prettyprint"> 126 * WebView webview = new WebView(this); 127 * setContentView(webview); 128 * 129 * // Simplest usage: note that an exception will NOT be thrown 130 * // if there is an error loading this page (see below). 131 * webview.loadUrl("http://slashdot.org/"); 132 * 133 * // Of course you can also load from any string: 134 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 135 * webview.loadData(summary, "text/html", "utf-8"); 136 * // ... although note that there are restrictions on what this HTML can do. 137 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 138 * </pre> 139 * 140 * <p>A WebView has several customization points where you can add your 141 * own behavior. These are:</p> 142 * 143 * <ul> 144 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 145 * This class is called when something that might impact a 146 * browser UI happens, for instance, progress updates and 147 * JavaScript alerts are sent here. 148 * </li> 149 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 150 * It will be called when things happen that impact the 151 * rendering of the content, eg, errors or form submissions. You 152 * can also intercept URL loading here.</li> 153 * <li>Via the {@link android.webkit.WebSettings} class, which contains 154 * miscellaneous configuration. </li> 155 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 156 * This lets you bind Java objects into the WebView so they can be 157 * controlled from the web pages JavaScript.</li> 158 * </ul> 159 * 160 * <p>Here's a more complicated example, showing error handling, 161 * settings, and progress notification:</p> 162 * 163 * <pre class="prettyprint"> 164 * // Let's display the progress in the activity title bar, like the 165 * // browser app does. 166 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 167 * 168 * webview.getSettings().setJavaScriptEnabled(true); 169 * 170 * final Activity activity = this; 171 * webview.setWebChromeClient(new WebChromeClient() { 172 * public void onProgressChanged(WebView view, int progress) { 173 * // Activities and WebViews measure progress with different scales. 174 * // The progress meter will automatically disappear when we reach 100% 175 * activity.setProgress(progress * 1000); 176 * } 177 * }); 178 * webview.setWebViewClient(new WebViewClient() { 179 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 180 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 181 * } 182 * }); 183 * 184 * webview.loadUrl("http://slashdot.org/"); 185 * </pre> 186 * 187 * <h3>Cookie and window management</h3> 188 * 189 * <p>For obvious security reasons, your application has its own 190 * cache, cookie store etc - it does not share the Browser 191 * applications data. Cookies are managed on a separate thread, so 192 * operations like index building don't block the UI 193 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 194 * if you want to use cookies in your application. 195 * </p> 196 * 197 * <p>By default, requests by the HTML to open new windows are 198 * ignored. This is true whether they be opened by JavaScript or by 199 * the target attribute on a link. You can customize your 200 * WebChromeClient to provide your own behaviour for opening multiple windows, 201 * and render them in whatever manner you want.</p> 202 * 203 * <p>Standard behavior for an Activity is to be destroyed and 204 * recreated when the devices orientation is changed. This will cause 205 * the WebView to reload the current page. If you don't want that, you 206 * can set your Activity to handle the orientation and keyboardHidden 207 * changes, and then just leave the WebView alone. It'll automatically 208 * re-orient itself as appropriate.</p> 209 */ 210public class WebView extends AbsoluteLayout 211 implements ViewTreeObserver.OnGlobalFocusChangeListener, 212 ViewGroup.OnHierarchyChangeListener { 213 214 // enable debug output for drag trackers 215 private static final boolean DEBUG_DRAG_TRACKER = false; 216 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 217 // the screen all-the-time. Good for profiling our drawing code 218 static private final boolean AUTO_REDRAW_HACK = false; 219 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 220 private boolean mAutoRedraw; 221 222 static final String LOGTAG = "webview"; 223 224 private static class ExtendedZoomControls extends FrameLayout { 225 public ExtendedZoomControls(Context context, AttributeSet attrs) { 226 super(context, attrs); 227 LayoutInflater inflater = (LayoutInflater) 228 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 229 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 230 mPlusMinusZoomControls = (ZoomControls) findViewById( 231 com.android.internal.R.id.zoomControls); 232 findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( 233 View.GONE); 234 } 235 236 public void show(boolean showZoom, boolean canZoomOut) { 237 mPlusMinusZoomControls.setVisibility( 238 showZoom ? View.VISIBLE : View.GONE); 239 fade(View.VISIBLE, 0.0f, 1.0f); 240 } 241 242 public void hide() { 243 fade(View.GONE, 1.0f, 0.0f); 244 } 245 246 private void fade(int visibility, float startAlpha, float endAlpha) { 247 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 248 anim.setDuration(500); 249 startAnimation(anim); 250 setVisibility(visibility); 251 } 252 253 public boolean hasFocus() { 254 return mPlusMinusZoomControls.hasFocus(); 255 } 256 257 public void setOnZoomInClickListener(OnClickListener listener) { 258 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 259 } 260 261 public void setOnZoomOutClickListener(OnClickListener listener) { 262 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 263 } 264 265 ZoomControls mPlusMinusZoomControls; 266 } 267 268 /** 269 * Transportation object for returning WebView across thread boundaries. 270 */ 271 public class WebViewTransport { 272 private WebView mWebview; 273 274 /** 275 * Set the WebView to the transportation object. 276 * @param webview The WebView to transport. 277 */ 278 public synchronized void setWebView(WebView webview) { 279 mWebview = webview; 280 } 281 282 /** 283 * Return the WebView object. 284 * @return WebView The transported WebView object. 285 */ 286 public synchronized WebView getWebView() { 287 return mWebview; 288 } 289 } 290 291 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 292 private final CallbackProxy mCallbackProxy; 293 294 private final WebViewDatabase mDatabase; 295 296 // SSL certificate for the main top-level page (if secure) 297 private SslCertificate mCertificate; 298 299 // Native WebView pointer that is 0 until the native object has been 300 // created. 301 private int mNativeClass; 302 // This would be final but it needs to be set to null when the WebView is 303 // destroyed. 304 private WebViewCore mWebViewCore; 305 // Handler for dispatching UI messages. 306 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 307 private WebTextView mWebTextView; 308 // Used to ignore changes to webkit text that arrives to the UI side after 309 // more key events. 310 private int mTextGeneration; 311 312 // Used by WebViewCore to create child views. 313 /* package */ final ViewManager mViewManager; 314 315 // Used to display in full screen mode 316 PluginFullScreenHolder mFullScreenHolder; 317 318 /** 319 * Position of the last touch event. 320 */ 321 private float mLastTouchX; 322 private float mLastTouchY; 323 324 /** 325 * Time of the last touch event. 326 */ 327 private long mLastTouchTime; 328 329 /** 330 * Time of the last time sending touch event to WebViewCore 331 */ 332 private long mLastSentTouchTime; 333 334 /** 335 * The minimum elapsed time before sending another ACTION_MOVE event to 336 * WebViewCore. This really should be tuned for each type of the devices. 337 * For example in Google Map api test case, it takes Dream device at least 338 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 339 * triggering the layout and drawing the picture. While the same process 340 * takes 60+ms on the current high speed device. If we make 341 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 342 * to WebViewCore queue and the real layout and draw events will be pushed 343 * to further, which slows down the refresh rate. Choose 50 to favor the 344 * current high speed devices. For Dream like devices, 100 is a better 345 * choice. Maybe make this in the buildspec later. 346 */ 347 private static final int TOUCH_SENT_INTERVAL = 50; 348 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 349 350 /** 351 * Helper class to get velocity for fling 352 */ 353 VelocityTracker mVelocityTracker; 354 private int mMaximumFling; 355 private float mLastVelocity; 356 private float mLastVelX; 357 private float mLastVelY; 358 359 /** 360 * Touch mode 361 */ 362 private int mTouchMode = TOUCH_DONE_MODE; 363 private static final int TOUCH_INIT_MODE = 1; 364 private static final int TOUCH_DRAG_START_MODE = 2; 365 private static final int TOUCH_DRAG_MODE = 3; 366 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 367 private static final int TOUCH_SHORTPRESS_MODE = 5; 368 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 369 private static final int TOUCH_DONE_MODE = 7; 370 private static final int TOUCH_SELECT_MODE = 8; 371 private static final int TOUCH_PINCH_DRAG = 9; 372 373 // Whether to forward the touch events to WebCore 374 private boolean mForwardTouchEvents = false; 375 376 // Whether to prevent drag during touch. The initial value depends on 377 // mForwardTouchEvents. If WebCore wants touch events, we assume it will 378 // take control of touch events unless it says no for touch down event. 379 private static final int PREVENT_DRAG_NO = 0; 380 private static final int PREVENT_DRAG_MAYBE_YES = 1; 381 private static final int PREVENT_DRAG_YES = 2; 382 private static final int PREVENT_DRAG_CANCEL = 3; 383 private int mPreventDrag = PREVENT_DRAG_NO; 384 385 // by default mPreventLongPress is false. If it is true, long press event 386 // will be handled by WebKit instead of UI. 387 private boolean mPreventLongPress = false; 388 // by default mPreventDoubleTap is false. If it is true, double tap event 389 // will be handled by WebKit instead of UI. 390 private boolean mPreventDoubleTap = false; 391 392 // this needs to be in sync with the logic in WebKit's 393 // EventHandler::handleTouchEvent() 394 private static final int TOUCH_PREVENT_DRAG = 0x1; 395 private static final int TOUCH_PREVENT_LONGPRESS = 0x2; 396 private static final int TOUCH_PREVENT_DOUBLETAP = 0x4; 397 398 // To keep track of whether the current drag was initiated by a WebTextView, 399 // so that we know not to hide the cursor 400 boolean mDragFromTextInput; 401 402 // Whether or not to draw the cursor ring. 403 private boolean mDrawCursorRing = true; 404 405 // true if onPause has been called (and not onResume) 406 private boolean mIsPaused; 407 408 /** 409 * Customizable constant 410 */ 411 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 412 private int mTouchSlopSquare; 413 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 414 private int mDoubleTapSlopSquare; 415 // pre-computed density adjusted navigation slop 416 private int mNavSlop; 417 // This should be ViewConfiguration.getTapTimeout() 418 // But system time out is 100ms, which is too short for the browser. 419 // In the browser, if it switches out of tap too soon, jump tap won't work. 420 private static final int TAP_TIMEOUT = 200; 421 // This should be ViewConfiguration.getLongPressTimeout() 422 // But system time out is 500ms, which is too short for the browser. 423 // With a short timeout, it's difficult to treat trigger a short press. 424 private static final int LONG_PRESS_TIMEOUT = 1000; 425 // needed to avoid flinging after a pause of no movement 426 private static final int MIN_FLING_TIME = 250; 427 // draw unfiltered after drag is held without movement 428 private static final int MOTIONLESS_TIME = 100; 429 // The time that the Zoom Controls are visible before fading away 430 private static final long ZOOM_CONTROLS_TIMEOUT = 431 ViewConfiguration.getZoomControlsTimeout(); 432 // The amount of content to overlap between two screens when going through 433 // pages with the space bar, in pixels. 434 private static final int PAGE_SCROLL_OVERLAP = 24; 435 436 /** 437 * These prevent calling requestLayout if either dimension is fixed. This 438 * depends on the layout parameters and the measure specs. 439 */ 440 boolean mWidthCanMeasure; 441 boolean mHeightCanMeasure; 442 443 // Remember the last dimensions we sent to the native side so we can avoid 444 // sending the same dimensions more than once. 445 int mLastWidthSent; 446 int mLastHeightSent; 447 448 private int mContentWidth; // cache of value from WebViewCore 449 private int mContentHeight; // cache of value from WebViewCore 450 451 // Need to have the separate control for horizontal and vertical scrollbar 452 // style than the View's single scrollbar style 453 private boolean mOverlayHorizontalScrollbar = true; 454 private boolean mOverlayVerticalScrollbar = false; 455 456 // our standard speed. this way small distances will be traversed in less 457 // time than large distances, but we cap the duration, so that very large 458 // distances won't take too long to get there. 459 private static final int STD_SPEED = 480; // pixels per second 460 // time for the longest scroll animation 461 private static final int MAX_DURATION = 750; // milliseconds 462 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 463 private OverScroller mScroller; 464 private boolean mInOverScrollMode = false; 465 private static Paint mOverScrollBackground; 466 467 private boolean mWrapContent; 468 private static final int MOTIONLESS_FALSE = 0; 469 private static final int MOTIONLESS_PENDING = 1; 470 private static final int MOTIONLESS_TRUE = 2; 471 private int mHeldMotionless; 472 473 // whether support multi-touch 474 private boolean mSupportMultiTouch; 475 // use the framework's ScaleGestureDetector to handle multi-touch 476 private ScaleGestureDetector mScaleDetector; 477 // minimum scale change during multi-touch zoom 478 private static float PREVIEW_SCALE_INCREMENT = 0.01f; 479 480 // the anchor point in the document space where VIEW_SIZE_CHANGED should 481 // apply to 482 private int mAnchorX; 483 private int mAnchorY; 484 485 /** 486 * Private message ids 487 */ 488 private static final int REMEMBER_PASSWORD = 1; 489 private static final int NEVER_REMEMBER_PASSWORD = 2; 490 private static final int SWITCH_TO_SHORTPRESS = 3; 491 private static final int SWITCH_TO_LONGPRESS = 4; 492 private static final int RELEASE_SINGLE_TAP = 5; 493 private static final int REQUEST_FORM_DATA = 6; 494 private static final int RESUME_WEBCORE_PRIORITY = 7; 495 private static final int DRAG_HELD_MOTIONLESS = 8; 496 private static final int AWAKEN_SCROLL_BARS = 9; 497 498 //! arg1=x, arg2=y 499 static final int SCROLL_TO_MSG_ID = 10; 500 static final int SCROLL_BY_MSG_ID = 11; 501 //! arg1=x, arg2=y 502 static final int SPAWN_SCROLL_TO_MSG_ID = 12; 503 //! arg1=x, arg2=y 504 static final int SYNC_SCROLL_TO_MSG_ID = 13; 505 static final int NEW_PICTURE_MSG_ID = 14; 506 static final int UPDATE_TEXT_ENTRY_MSG_ID = 15; 507 static final int WEBCORE_INITIALIZED_MSG_ID = 16; 508 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 17; 509 static final int UPDATE_ZOOM_RANGE = 18; 510 static final int MOVE_OUT_OF_PLUGIN = 19; 511 static final int CLEAR_TEXT_ENTRY = 20; 512 static final int UPDATE_TEXT_SELECTION_MSG_ID = 21; 513 static final int SHOW_RECT_MSG_ID = 22; 514 static final int LONG_PRESS_CENTER = 23; 515 static final int PREVENT_TOUCH_ID = 24; 516 static final int WEBCORE_NEED_TOUCH_EVENTS = 25; 517 // obj=Rect in doc coordinates 518 static final int INVAL_RECT_MSG_ID = 26; 519 static final int REQUEST_KEYBOARD = 27; 520 static final int DO_MOTION_UP = 28; 521 static final int SHOW_FULLSCREEN = 29; 522 static final int HIDE_FULLSCREEN = 30; 523 static final int DOM_FOCUS_CHANGED = 31; 524 static final int IMMEDIATE_REPAINT_MSG_ID = 32; 525 static final int SET_ROOT_LAYER_MSG_ID = 33; 526 static final int RETURN_LABEL = 34; 527 static final int FIND_AGAIN = 35; 528 529 static final String[] HandlerDebugString = { 530 "REMEMBER_PASSWORD", // = 1; 531 "NEVER_REMEMBER_PASSWORD", // = 2; 532 "SWITCH_TO_SHORTPRESS", // = 3; 533 "SWITCH_TO_LONGPRESS", // = 4; 534 "RELEASE_SINGLE_TAP", // = 5; 535 "REQUEST_FORM_DATA", // = 6; 536 "RESUME_WEBCORE_PRIORITY", // = 7; 537 "DRAG_HELD_MOTIONLESS", // = 8; 538 "AWAKEN_SCROLL_BARS", // = 9; 539 "SCROLL_TO_MSG_ID", // = 10; 540 "SCROLL_BY_MSG_ID", // = 11; 541 "SPAWN_SCROLL_TO_MSG_ID", // = 12; 542 "SYNC_SCROLL_TO_MSG_ID", // = 13; 543 "NEW_PICTURE_MSG_ID", // = 14; 544 "UPDATE_TEXT_ENTRY_MSG_ID", // = 15; 545 "WEBCORE_INITIALIZED_MSG_ID", // = 16; 546 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 17; 547 "UPDATE_ZOOM_RANGE", // = 18; 548 "MOVE_OUT_OF_PLUGIN", // = 19; 549 "CLEAR_TEXT_ENTRY", // = 20; 550 "UPDATE_TEXT_SELECTION_MSG_ID", // = 21; 551 "SHOW_RECT_MSG_ID", // = 22; 552 "LONG_PRESS_CENTER", // = 23; 553 "PREVENT_TOUCH_ID", // = 24; 554 "WEBCORE_NEED_TOUCH_EVENTS", // = 25; 555 "INVAL_RECT_MSG_ID", // = 26; 556 "REQUEST_KEYBOARD", // = 27; 557 "DO_MOTION_UP", // = 28; 558 "SHOW_FULLSCREEN", // = 29; 559 "HIDE_FULLSCREEN", // = 30; 560 "DOM_FOCUS_CHANGED", // = 31; 561 "IMMEDIATE_REPAINT_MSG_ID", // = 32; 562 "SET_ROOT_LAYER_MSG_ID", // = 33; 563 "RETURN_LABEL", // = 34; 564 "FIND_AGAIN" // = 35; 565 }; 566 567 // If the site doesn't use the viewport meta tag to specify the viewport, 568 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 569 static final int DEFAULT_VIEWPORT_WIDTH = 800; 570 571 // normally we try to fit the content to the minimum preferred width 572 // calculated by the Webkit. To avoid the bad behavior when some site's 573 // minimum preferred width keeps growing when changing the viewport width or 574 // the minimum preferred width is huge, an upper limit is needed. 575 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 576 577 // default scale limit. Depending on the display density 578 private static float DEFAULT_MAX_ZOOM_SCALE; 579 private static float DEFAULT_MIN_ZOOM_SCALE; 580 // scale limit, which can be set through viewport meta tag in the web page 581 private float mMaxZoomScale; 582 private float mMinZoomScale; 583 private boolean mMinZoomScaleFixed = true; 584 585 // initial scale in percent. 0 means using default. 586 private int mInitialScaleInPercent = 0; 587 588 // while in the zoom overview mode, the page's width is fully fit to the 589 // current window. The page is alive, in another words, you can click to 590 // follow the links. Double tap will toggle between zoom overview mode and 591 // the last zoom scale. 592 boolean mInZoomOverview = false; 593 594 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 595 // engadget always have wider mContentWidth no matter what viewport size is. 596 int mZoomOverviewWidth = DEFAULT_VIEWPORT_WIDTH; 597 float mTextWrapScale; 598 599 // default scale. Depending on the display density. 600 static int DEFAULT_SCALE_PERCENT; 601 private float mDefaultScale; 602 603 // set to true temporarily during ScaleGesture triggered zoom 604 private boolean mPreviewZoomOnly = false; 605 606 // computed scale and inverse, from mZoomWidth. 607 private float mActualScale; 608 private float mInvActualScale; 609 // if this is non-zero, it is used on drawing rather than mActualScale 610 private float mZoomScale; 611 private float mInvInitialZoomScale; 612 private float mInvFinalZoomScale; 613 private int mInitialScrollX; 614 private int mInitialScrollY; 615 private long mZoomStart; 616 private static final int ZOOM_ANIMATION_LENGTH = 500; 617 618 private boolean mUserScroll = false; 619 620 private int mSnapScrollMode = SNAP_NONE; 621 private static final int SNAP_NONE = 0; 622 private static final int SNAP_LOCK = 1; // not a separate state 623 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 624 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 625 private boolean mSnapPositive; 626 627 // keep these in sync with their counterparts in WebView.cpp 628 private static final int DRAW_EXTRAS_NONE = 0; 629 private static final int DRAW_EXTRAS_FIND = 1; 630 private static final int DRAW_EXTRAS_SELECTION = 2; 631 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 632 633 // Used to match key downs and key ups 634 private boolean mGotKeyDown; 635 636 /* package */ static boolean mLogEvent = true; 637 638 // for event log 639 private long mLastTouchUpTime = 0; 640 641 /** 642 * URI scheme for telephone number 643 */ 644 public static final String SCHEME_TEL = "tel:"; 645 /** 646 * URI scheme for email address 647 */ 648 public static final String SCHEME_MAILTO = "mailto:"; 649 /** 650 * URI scheme for map address 651 */ 652 public static final String SCHEME_GEO = "geo:0,0?q="; 653 654 private int mBackgroundColor = Color.WHITE; 655 656 // Used to notify listeners of a new picture. 657 private PictureListener mPictureListener; 658 /** 659 * Interface to listen for new pictures as they change. 660 */ 661 public interface PictureListener { 662 /** 663 * Notify the listener that the picture has changed. 664 * @param view The WebView that owns the picture. 665 * @param picture The new picture. 666 */ 667 public void onNewPicture(WebView view, Picture picture); 668 } 669 670 // FIXME: Want to make this public, but need to change the API file. 671 public /*static*/ class HitTestResult { 672 /** 673 * Default HitTestResult, where the target is unknown 674 */ 675 public static final int UNKNOWN_TYPE = 0; 676 /** 677 * HitTestResult for hitting a HTML::a tag 678 */ 679 public static final int ANCHOR_TYPE = 1; 680 /** 681 * HitTestResult for hitting a phone number 682 */ 683 public static final int PHONE_TYPE = 2; 684 /** 685 * HitTestResult for hitting a map address 686 */ 687 public static final int GEO_TYPE = 3; 688 /** 689 * HitTestResult for hitting an email address 690 */ 691 public static final int EMAIL_TYPE = 4; 692 /** 693 * HitTestResult for hitting an HTML::img tag 694 */ 695 public static final int IMAGE_TYPE = 5; 696 /** 697 * HitTestResult for hitting a HTML::a tag which contains HTML::img 698 */ 699 public static final int IMAGE_ANCHOR_TYPE = 6; 700 /** 701 * HitTestResult for hitting a HTML::a tag with src=http 702 */ 703 public static final int SRC_ANCHOR_TYPE = 7; 704 /** 705 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 706 */ 707 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 708 /** 709 * HitTestResult for hitting an edit text area 710 */ 711 public static final int EDIT_TEXT_TYPE = 9; 712 713 private int mType; 714 private String mExtra; 715 716 HitTestResult() { 717 mType = UNKNOWN_TYPE; 718 } 719 720 private void setType(int type) { 721 mType = type; 722 } 723 724 private void setExtra(String extra) { 725 mExtra = extra; 726 } 727 728 public int getType() { 729 return mType; 730 } 731 732 public String getExtra() { 733 return mExtra; 734 } 735 } 736 737 // The View containing the zoom controls 738 private ExtendedZoomControls mZoomControls; 739 private Runnable mZoomControlRunnable; 740 741 private ZoomButtonsController mZoomButtonsController; 742 743 // These keep track of the center point of the zoom. They are used to 744 // determine the point around which we should zoom. 745 private float mZoomCenterX; 746 private float mZoomCenterY; 747 748 private ZoomButtonsController.OnZoomListener mZoomListener = 749 new ZoomButtonsController.OnZoomListener() { 750 751 public void onVisibilityChanged(boolean visible) { 752 if (visible) { 753 switchOutDrawHistory(); 754 // Bring back the hidden zoom controls. 755 mZoomButtonsController.getZoomControls().setVisibility( 756 View.VISIBLE); 757 updateZoomButtonsEnabled(); 758 } 759 } 760 761 public void onZoom(boolean zoomIn) { 762 if (zoomIn) { 763 zoomIn(); 764 } else { 765 zoomOut(); 766 } 767 768 updateZoomButtonsEnabled(); 769 } 770 }; 771 772 /** 773 * Construct a new WebView with a Context object. 774 * @param context A Context object used to access application assets. 775 */ 776 public WebView(Context context) { 777 this(context, null); 778 } 779 780 /** 781 * Construct a new WebView with layout parameters. 782 * @param context A Context object used to access application assets. 783 * @param attrs An AttributeSet passed to our parent. 784 */ 785 public WebView(Context context, AttributeSet attrs) { 786 this(context, attrs, com.android.internal.R.attr.webViewStyle); 787 } 788 789 /** 790 * Construct a new WebView with layout parameters and a default style. 791 * @param context A Context object used to access application assets. 792 * @param attrs An AttributeSet passed to our parent. 793 * @param defStyle The default style resource ID. 794 */ 795 public WebView(Context context, AttributeSet attrs, int defStyle) { 796 this(context, attrs, defStyle, null); 797 } 798 799 /** 800 * Construct a new WebView with layout parameters, a default style and a set 801 * of custom Javscript interfaces to be added to the WebView at initialization 802 * time. This guarantees that these interfaces will be available when the JS 803 * context is initialized. 804 * @param context A Context object used to access application assets. 805 * @param attrs An AttributeSet passed to our parent. 806 * @param defStyle The default style resource ID. 807 * @param javascriptInterfaces is a Map of intareface names, as keys, and 808 * object implementing those interfaces, as values. 809 * @hide pending API council approval. 810 */ 811 protected WebView(Context context, AttributeSet attrs, int defStyle, 812 Map<String, Object> javascriptInterfaces) { 813 super(context, attrs, defStyle); 814 init(); 815 816 mCallbackProxy = new CallbackProxy(context, this); 817 mViewManager = new ViewManager(this); 818 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 819 mDatabase = WebViewDatabase.getInstance(context); 820 mScroller = new OverScroller(context); 821 822 mZoomButtonsController = new ZoomButtonsController(this); 823 mZoomButtonsController.setOnZoomListener(mZoomListener); 824 // ZoomButtonsController positions the buttons at the bottom, but in 825 // the middle. Change their layout parameters so they appear on the 826 // right. 827 View controls = mZoomButtonsController.getZoomControls(); 828 ViewGroup.LayoutParams params = controls.getLayoutParams(); 829 if (params instanceof FrameLayout.LayoutParams) { 830 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 831 params; 832 frameParams.gravity = Gravity.RIGHT; 833 } 834 updateMultiTouchSupport(context); 835 } 836 837 void updateMultiTouchSupport(Context context) { 838 WebSettings settings = getSettings(); 839 mSupportMultiTouch = context.getPackageManager().hasSystemFeature( 840 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 841 && settings.supportZoom() && settings.getBuiltInZoomControls(); 842 if (mSupportMultiTouch && (mScaleDetector == null)) { 843 mScaleDetector = new ScaleGestureDetector(context, 844 new ScaleDetectorListener()); 845 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 846 mScaleDetector = null; 847 } 848 } 849 850 private void updateZoomButtonsEnabled() { 851 boolean canZoomIn = mActualScale < mMaxZoomScale; 852 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 853 if (!canZoomIn && !canZoomOut) { 854 // Hide the zoom in and out buttons, as well as the fit to page 855 // button, if the page cannot zoom 856 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 857 } else { 858 // Set each one individually, as a page may be able to zoom in 859 // or out. 860 mZoomButtonsController.setZoomInEnabled(canZoomIn); 861 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 862 } 863 } 864 865 private void init() { 866 setWillNotDraw(false); 867 setFocusable(true); 868 setFocusableInTouchMode(true); 869 setClickable(true); 870 setLongClickable(true); 871 872 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 873 int slop = configuration.getScaledTouchSlop(); 874 mTouchSlopSquare = slop * slop; 875 mMinLockSnapReverseDistance = slop; 876 slop = configuration.getScaledDoubleTapSlop(); 877 mDoubleTapSlopSquare = slop * slop; 878 final float density = getContext().getResources().getDisplayMetrics().density; 879 // use one line height, 16 based on our current default font, for how 880 // far we allow a touch be away from the edge of a link 881 mNavSlop = (int) (16 * density); 882 // density adjusted scale factors 883 DEFAULT_SCALE_PERCENT = (int) (100 * density); 884 mDefaultScale = density; 885 mActualScale = density; 886 mInvActualScale = 1 / density; 887 mTextWrapScale = density; 888 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 889 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 890 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 891 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 892 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 893 } 894 895 /* package */void updateDefaultZoomDensity(int zoomDensity) { 896 final float density = getContext().getResources().getDisplayMetrics().density 897 * 100 / zoomDensity; 898 if (Math.abs(density - mDefaultScale) > 0.01) { 899 float scaleFactor = density / mDefaultScale; 900 // adjust the limits 901 mNavSlop = (int) (16 * density); 902 DEFAULT_SCALE_PERCENT = (int) (100 * density); 903 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 904 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 905 mDefaultScale = density; 906 mMaxZoomScale *= scaleFactor; 907 mMinZoomScale *= scaleFactor; 908 setNewZoomScale(mActualScale * scaleFactor, true, false); 909 } 910 } 911 912 /* package */ boolean onSavePassword(String schemePlusHost, String username, 913 String password, final Message resumeMsg) { 914 boolean rVal = false; 915 if (resumeMsg == null) { 916 // null resumeMsg implies saving password silently 917 mDatabase.setUsernamePassword(schemePlusHost, username, password); 918 } else { 919 final Message remember = mPrivateHandler.obtainMessage( 920 REMEMBER_PASSWORD); 921 remember.getData().putString("host", schemePlusHost); 922 remember.getData().putString("username", username); 923 remember.getData().putString("password", password); 924 remember.obj = resumeMsg; 925 926 final Message neverRemember = mPrivateHandler.obtainMessage( 927 NEVER_REMEMBER_PASSWORD); 928 neverRemember.getData().putString("host", schemePlusHost); 929 neverRemember.getData().putString("username", username); 930 neverRemember.getData().putString("password", password); 931 neverRemember.obj = resumeMsg; 932 933 new AlertDialog.Builder(getContext()) 934 .setTitle(com.android.internal.R.string.save_password_label) 935 .setMessage(com.android.internal.R.string.save_password_message) 936 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 937 new DialogInterface.OnClickListener() { 938 public void onClick(DialogInterface dialog, int which) { 939 resumeMsg.sendToTarget(); 940 } 941 }) 942 .setNeutralButton(com.android.internal.R.string.save_password_remember, 943 new DialogInterface.OnClickListener() { 944 public void onClick(DialogInterface dialog, int which) { 945 remember.sendToTarget(); 946 } 947 }) 948 .setNegativeButton(com.android.internal.R.string.save_password_never, 949 new DialogInterface.OnClickListener() { 950 public void onClick(DialogInterface dialog, int which) { 951 neverRemember.sendToTarget(); 952 } 953 }) 954 .setOnCancelListener(new OnCancelListener() { 955 public void onCancel(DialogInterface dialog) { 956 resumeMsg.sendToTarget(); 957 } 958 }).show(); 959 // Return true so that WebViewCore will pause while the dialog is 960 // up. 961 rVal = true; 962 } 963 return rVal; 964 } 965 966 @Override 967 public void setScrollBarStyle(int style) { 968 if (style == View.SCROLLBARS_INSIDE_INSET 969 || style == View.SCROLLBARS_OUTSIDE_INSET) { 970 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 971 } else { 972 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 973 } 974 super.setScrollBarStyle(style); 975 } 976 977 /** 978 * Specify whether the horizontal scrollbar has overlay style. 979 * @param overlay TRUE if horizontal scrollbar should have overlay style. 980 */ 981 public void setHorizontalScrollbarOverlay(boolean overlay) { 982 mOverlayHorizontalScrollbar = overlay; 983 } 984 985 /** 986 * Specify whether the vertical scrollbar has overlay style. 987 * @param overlay TRUE if vertical scrollbar should have overlay style. 988 */ 989 public void setVerticalScrollbarOverlay(boolean overlay) { 990 mOverlayVerticalScrollbar = overlay; 991 } 992 993 /** 994 * Return whether horizontal scrollbar has overlay style 995 * @return TRUE if horizontal scrollbar has overlay style. 996 */ 997 public boolean overlayHorizontalScrollbar() { 998 return mOverlayHorizontalScrollbar; 999 } 1000 1001 /** 1002 * Return whether vertical scrollbar has overlay style 1003 * @return TRUE if vertical scrollbar has overlay style. 1004 */ 1005 public boolean overlayVerticalScrollbar() { 1006 return mOverlayVerticalScrollbar; 1007 } 1008 1009 /* 1010 * Return the width of the view where the content of WebView should render 1011 * to. 1012 * Note: this can be called from WebCoreThread. 1013 */ 1014 /* package */ int getViewWidth() { 1015 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1016 return getWidth(); 1017 } else { 1018 return getWidth() - getVerticalScrollbarWidth(); 1019 } 1020 } 1021 1022 /* 1023 * returns the height of the titlebarview (if any). Does not care about 1024 * scrolling 1025 */ 1026 private int getTitleHeight() { 1027 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1028 } 1029 1030 /* 1031 * Return the amount of the titlebarview (if any) that is visible 1032 */ 1033 private int getVisibleTitleHeight() { 1034 // need to restrict mScrollY due to over scroll 1035 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1036 } 1037 1038 /* 1039 * Return the height of the view where the content of WebView should render 1040 * to. Note that this excludes mTitleBar, if there is one. 1041 * Note: this can be called from WebCoreThread. 1042 */ 1043 /* package */ int getViewHeight() { 1044 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1045 } 1046 1047 private int getViewHeightWithTitle() { 1048 int height = getHeight(); 1049 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1050 height -= getHorizontalScrollbarHeight(); 1051 } 1052 return height; 1053 } 1054 1055 /** 1056 * @return The SSL certificate for the main top-level page or null if 1057 * there is no certificate (the site is not secure). 1058 */ 1059 public SslCertificate getCertificate() { 1060 return mCertificate; 1061 } 1062 1063 /** 1064 * Sets the SSL certificate for the main top-level page. 1065 */ 1066 public void setCertificate(SslCertificate certificate) { 1067 // here, the certificate can be null (if the site is not secure) 1068 mCertificate = certificate; 1069 } 1070 1071 //------------------------------------------------------------------------- 1072 // Methods called by activity 1073 //------------------------------------------------------------------------- 1074 1075 /** 1076 * Save the username and password for a particular host in the WebView's 1077 * internal database. 1078 * @param host The host that required the credentials. 1079 * @param username The username for the given host. 1080 * @param password The password for the given host. 1081 */ 1082 public void savePassword(String host, String username, String password) { 1083 mDatabase.setUsernamePassword(host, username, password); 1084 } 1085 1086 /** 1087 * Set the HTTP authentication credentials for a given host and realm. 1088 * 1089 * @param host The host for the credentials. 1090 * @param realm The realm for the credentials. 1091 * @param username The username for the password. If it is null, it means 1092 * password can't be saved. 1093 * @param password The password 1094 */ 1095 public void setHttpAuthUsernamePassword(String host, String realm, 1096 String username, String password) { 1097 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1098 } 1099 1100 /** 1101 * Retrieve the HTTP authentication username and password for a given 1102 * host & realm pair 1103 * 1104 * @param host The host for which the credentials apply. 1105 * @param realm The realm for which the credentials apply. 1106 * @return String[] if found, String[0] is username, which can be null and 1107 * String[1] is password. Return null if it can't find anything. 1108 */ 1109 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1110 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1111 } 1112 1113 /** 1114 * Destroy the internal state of the WebView. This method should be called 1115 * after the WebView has been removed from the view system. No other 1116 * methods may be called on a WebView after destroy. 1117 */ 1118 public void destroy() { 1119 clearTextEntry(false); 1120 if (mWebViewCore != null) { 1121 // Set the handlers to null before destroying WebViewCore so no 1122 // more messages will be posted. 1123 mCallbackProxy.setWebViewClient(null); 1124 mCallbackProxy.setWebChromeClient(null); 1125 // Tell WebViewCore to destroy itself 1126 WebViewCore webViewCore = mWebViewCore; 1127 mWebViewCore = null; // prevent using partial webViewCore 1128 webViewCore.destroy(); 1129 // Remove any pending messages that might not be serviced yet. 1130 mPrivateHandler.removeCallbacksAndMessages(null); 1131 mCallbackProxy.removeCallbacksAndMessages(null); 1132 // Wake up the WebCore thread just in case it is waiting for a 1133 // javascript dialog. 1134 synchronized (mCallbackProxy) { 1135 mCallbackProxy.notify(); 1136 } 1137 } 1138 if (mNativeClass != 0) { 1139 nativeDestroy(); 1140 mNativeClass = 0; 1141 } 1142 } 1143 1144 /** 1145 * Enables platform notifications of data state and proxy changes. 1146 */ 1147 public static void enablePlatformNotifications() { 1148 Network.enablePlatformNotifications(); 1149 } 1150 1151 /** 1152 * If platform notifications are enabled, this should be called 1153 * from the Activity's onPause() or onStop(). 1154 */ 1155 public static void disablePlatformNotifications() { 1156 Network.disablePlatformNotifications(); 1157 } 1158 1159 /** 1160 * Sets JavaScript engine flags. 1161 * 1162 * @param flags JS engine flags in a String 1163 * 1164 * @hide pending API solidification 1165 */ 1166 public void setJsFlags(String flags) { 1167 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1168 } 1169 1170 /** 1171 * Inform WebView of the network state. This is used to set 1172 * the javascript property window.navigator.isOnline and 1173 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1174 * @param networkUp boolean indicating if network is available 1175 */ 1176 public void setNetworkAvailable(boolean networkUp) { 1177 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1178 networkUp ? 1 : 0, 0); 1179 } 1180 1181 /** 1182 * Inform WebView about the current network type. 1183 * {@hide} 1184 */ 1185 public void setNetworkType(String type, String subtype) { 1186 Map<String, String> map = new HashMap<String, String>(); 1187 map.put("type", type); 1188 map.put("subtype", subtype); 1189 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1190 } 1191 /** 1192 * Save the state of this WebView used in 1193 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1194 * method no longer stores the display data for this WebView. The previous 1195 * behavior could potentially leak files if {@link #restoreState} was never 1196 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1197 * and restoring the display data. 1198 * @param outState The Bundle to store the WebView state. 1199 * @return The same copy of the back/forward list used to save the state. If 1200 * saveState fails, the returned list will be null. 1201 * @see #savePicture 1202 * @see #restorePicture 1203 */ 1204 public WebBackForwardList saveState(Bundle outState) { 1205 if (outState == null) { 1206 return null; 1207 } 1208 // We grab a copy of the back/forward list because a client of WebView 1209 // may have invalidated the history list by calling clearHistory. 1210 WebBackForwardList list = copyBackForwardList(); 1211 final int currentIndex = list.getCurrentIndex(); 1212 final int size = list.getSize(); 1213 // We should fail saving the state if the list is empty or the index is 1214 // not in a valid range. 1215 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1216 return null; 1217 } 1218 outState.putInt("index", currentIndex); 1219 // FIXME: This should just be a byte[][] instead of ArrayList but 1220 // Parcel.java does not have the code to handle multi-dimensional 1221 // arrays. 1222 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1223 for (int i = 0; i < size; i++) { 1224 WebHistoryItem item = list.getItemAtIndex(i); 1225 if (null == item) { 1226 // FIXME: this shouldn't happen 1227 // need to determine how item got set to null 1228 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1229 return null; 1230 } 1231 byte[] data = item.getFlattenedData(); 1232 if (data == null) { 1233 // It would be very odd to not have any data for a given history 1234 // item. And we will fail to rebuild the history list without 1235 // flattened data. 1236 return null; 1237 } 1238 history.add(data); 1239 } 1240 outState.putSerializable("history", history); 1241 if (mCertificate != null) { 1242 outState.putBundle("certificate", 1243 SslCertificate.saveState(mCertificate)); 1244 } 1245 return list; 1246 } 1247 1248 /** 1249 * Save the current display data to the Bundle given. Used in conjunction 1250 * with {@link #saveState}. 1251 * @param b A Bundle to store the display data. 1252 * @param dest The file to store the serialized picture data. Will be 1253 * overwritten with this WebView's picture data. 1254 * @return True if the picture was successfully saved. 1255 */ 1256 public boolean savePicture(Bundle b, File dest) { 1257 if (dest == null || b == null) { 1258 return false; 1259 } 1260 final Picture p = capturePicture(); 1261 try { 1262 final FileOutputStream out = new FileOutputStream(dest); 1263 p.writeToStream(out); 1264 out.close(); 1265 // now update the bundle 1266 b.putInt("scrollX", mScrollX); 1267 b.putInt("scrollY", mScrollY); 1268 b.putFloat("scale", mActualScale); 1269 b.putFloat("textwrapScale", mTextWrapScale); 1270 b.putBoolean("overview", mInZoomOverview); 1271 return true; 1272 } catch (FileNotFoundException e){ 1273 e.printStackTrace(); 1274 } catch (IOException e) { 1275 e.printStackTrace(); 1276 } catch (RuntimeException e) { 1277 e.printStackTrace(); 1278 } 1279 return false; 1280 } 1281 1282 /** 1283 * Restore the display data that was save in {@link #savePicture}. Used in 1284 * conjunction with {@link #restoreState}. 1285 * @param b A Bundle containing the saved display data. 1286 * @param src The file where the picture data was stored. 1287 * @return True if the picture was successfully restored. 1288 */ 1289 public boolean restorePicture(Bundle b, File src) { 1290 if (src == null || b == null) { 1291 return false; 1292 } 1293 if (src.exists()) { 1294 Picture p = null; 1295 try { 1296 final FileInputStream in = new FileInputStream(src); 1297 p = Picture.createFromStream(in); 1298 in.close(); 1299 } catch (FileNotFoundException e){ 1300 e.printStackTrace(); 1301 } catch (RuntimeException e) { 1302 e.printStackTrace(); 1303 } catch (IOException e) { 1304 e.printStackTrace(); 1305 } 1306 if (p != null) { 1307 int sx = b.getInt("scrollX", 0); 1308 int sy = b.getInt("scrollY", 0); 1309 float scale = b.getFloat("scale", 1.0f); 1310 mDrawHistory = true; 1311 mHistoryPicture = p; 1312 mScrollX = sx; 1313 mScrollY = sy; 1314 mHistoryWidth = Math.round(p.getWidth() * scale); 1315 mHistoryHeight = Math.round(p.getHeight() * scale); 1316 // as getWidth() / getHeight() of the view are not 1317 // available yet, set up mActualScale, so that when 1318 // onSizeChanged() is called, the rest will be set 1319 // correctly 1320 mActualScale = scale; 1321 mInvActualScale = 1 / scale; 1322 mTextWrapScale = b.getFloat("textwrapScale", scale); 1323 mInZoomOverview = b.getBoolean("overview"); 1324 invalidate(); 1325 return true; 1326 } 1327 } 1328 return false; 1329 } 1330 1331 /** 1332 * Restore the state of this WebView from the given map used in 1333 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1334 * be called to restore the state of the WebView before using the object. If 1335 * it is called after the WebView has had a chance to build state (load 1336 * pages, create a back/forward list, etc.) there may be undesirable 1337 * side-effects. Please note that this method no longer restores the 1338 * display data for this WebView. See {@link #savePicture} and {@link 1339 * #restorePicture} for saving and restoring the display data. 1340 * @param inState The incoming Bundle of state. 1341 * @return The restored back/forward list or null if restoreState failed. 1342 * @see #savePicture 1343 * @see #restorePicture 1344 */ 1345 public WebBackForwardList restoreState(Bundle inState) { 1346 WebBackForwardList returnList = null; 1347 if (inState == null) { 1348 return returnList; 1349 } 1350 if (inState.containsKey("index") && inState.containsKey("history")) { 1351 mCertificate = SslCertificate.restoreState( 1352 inState.getBundle("certificate")); 1353 1354 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1355 final int index = inState.getInt("index"); 1356 // We can't use a clone of the list because we need to modify the 1357 // shared copy, so synchronize instead to prevent concurrent 1358 // modifications. 1359 synchronized (list) { 1360 final List<byte[]> history = 1361 (List<byte[]>) inState.getSerializable("history"); 1362 final int size = history.size(); 1363 // Check the index bounds so we don't crash in native code while 1364 // restoring the history index. 1365 if (index < 0 || index >= size) { 1366 return null; 1367 } 1368 for (int i = 0; i < size; i++) { 1369 byte[] data = history.remove(0); 1370 if (data == null) { 1371 // If we somehow have null data, we cannot reconstruct 1372 // the item and thus our history list cannot be rebuilt. 1373 return null; 1374 } 1375 WebHistoryItem item = new WebHistoryItem(data); 1376 list.addHistoryItem(item); 1377 } 1378 // Grab the most recent copy to return to the caller. 1379 returnList = copyBackForwardList(); 1380 // Update the copy to have the correct index. 1381 returnList.setCurrentIndex(index); 1382 } 1383 // Remove all pending messages because we are restoring previous 1384 // state. 1385 mWebViewCore.removeMessages(); 1386 // Send a restore state message. 1387 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1388 } 1389 return returnList; 1390 } 1391 1392 /** 1393 * Load the given url with the extra headers. 1394 * @param url The url of the resource to load. 1395 * @param extraHeaders The extra headers sent with this url. This should not 1396 * include the common headers like "user-agent". If it does, it 1397 * will be replaced by the intrinsic value of the WebView. 1398 */ 1399 public void loadUrl(String url, Map<String, String> extraHeaders) { 1400 switchOutDrawHistory(); 1401 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1402 arg.mUrl = url; 1403 arg.mExtraHeaders = extraHeaders; 1404 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1405 clearTextEntry(false); 1406 } 1407 1408 /** 1409 * Load the given url. 1410 * @param url The url of the resource to load. 1411 */ 1412 public void loadUrl(String url) { 1413 if (url == null) { 1414 return; 1415 } 1416 loadUrl(url, null); 1417 } 1418 1419 /** 1420 * Load the url with postData using "POST" method into the WebView. If url 1421 * is not a network url, it will be loaded with {link 1422 * {@link #loadUrl(String)} instead. 1423 * 1424 * @param url The url of the resource to load. 1425 * @param postData The data will be passed to "POST" request. 1426 */ 1427 public void postUrl(String url, byte[] postData) { 1428 if (URLUtil.isNetworkUrl(url)) { 1429 switchOutDrawHistory(); 1430 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1431 arg.mUrl = url; 1432 arg.mPostData = postData; 1433 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1434 clearTextEntry(false); 1435 } else { 1436 loadUrl(url); 1437 } 1438 } 1439 1440 /** 1441 * Load the given data into the WebView. This will load the data into 1442 * WebView using the data: scheme. Content loaded through this mechanism 1443 * does not have the ability to load content from the network. 1444 * @param data A String of data in the given encoding. 1445 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1446 * @param encoding The encoding of the data. i.e. utf-8, base64 1447 */ 1448 public void loadData(String data, String mimeType, String encoding) { 1449 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1450 } 1451 1452 /** 1453 * Load the given data into the WebView, use the provided URL as the base 1454 * URL for the content. The base URL is the URL that represents the page 1455 * that is loaded through this interface. As such, it is used for the 1456 * history entry and to resolve any relative URLs. The failUrl is used if 1457 * browser fails to load the data provided. If it is empty or null, and the 1458 * load fails, then no history entry is created. 1459 * <p> 1460 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1461 * files through "file:///android_asset/" for the sub resources is more 1462 * restricted. If you provide null or empty string as baseUrl, you won't be 1463 * able to access asset files. If the baseUrl is anything other than 1464 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1465 * sub resources. 1466 * 1467 * @param baseUrl Url to resolve relative paths with, if null defaults to 1468 * "about:blank" 1469 * @param data A String of data in the given encoding. 1470 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1471 * defaults to "text/html" 1472 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1473 * @param failUrl URL to use if the content fails to load or null. 1474 */ 1475 public void loadDataWithBaseURL(String baseUrl, String data, 1476 String mimeType, String encoding, String failUrl) { 1477 1478 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1479 loadData(data, mimeType, encoding); 1480 return; 1481 } 1482 switchOutDrawHistory(); 1483 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1484 arg.mBaseUrl = baseUrl; 1485 arg.mData = data; 1486 arg.mMimeType = mimeType; 1487 arg.mEncoding = encoding; 1488 arg.mFailUrl = failUrl; 1489 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1490 clearTextEntry(false); 1491 } 1492 1493 /** 1494 * Stop the current load. 1495 */ 1496 public void stopLoading() { 1497 // TODO: should we clear all the messages in the queue before sending 1498 // STOP_LOADING? 1499 switchOutDrawHistory(); 1500 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1501 } 1502 1503 /** 1504 * Reload the current url. 1505 */ 1506 public void reload() { 1507 clearTextEntry(false); 1508 switchOutDrawHistory(); 1509 mWebViewCore.sendMessage(EventHub.RELOAD); 1510 } 1511 1512 /** 1513 * Return true if this WebView has a back history item. 1514 * @return True iff this WebView has a back history item. 1515 */ 1516 public boolean canGoBack() { 1517 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1518 synchronized (l) { 1519 if (l.getClearPending()) { 1520 return false; 1521 } else { 1522 return l.getCurrentIndex() > 0; 1523 } 1524 } 1525 } 1526 1527 /** 1528 * Go back in the history of this WebView. 1529 */ 1530 public void goBack() { 1531 goBackOrForward(-1); 1532 } 1533 1534 /** 1535 * Return true if this WebView has a forward history item. 1536 * @return True iff this Webview has a forward history item. 1537 */ 1538 public boolean canGoForward() { 1539 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1540 synchronized (l) { 1541 if (l.getClearPending()) { 1542 return false; 1543 } else { 1544 return l.getCurrentIndex() < l.getSize() - 1; 1545 } 1546 } 1547 } 1548 1549 /** 1550 * Go forward in the history of this WebView. 1551 */ 1552 public void goForward() { 1553 goBackOrForward(1); 1554 } 1555 1556 /** 1557 * Return true if the page can go back or forward the given 1558 * number of steps. 1559 * @param steps The negative or positive number of steps to move the 1560 * history. 1561 */ 1562 public boolean canGoBackOrForward(int steps) { 1563 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1564 synchronized (l) { 1565 if (l.getClearPending()) { 1566 return false; 1567 } else { 1568 int newIndex = l.getCurrentIndex() + steps; 1569 return newIndex >= 0 && newIndex < l.getSize(); 1570 } 1571 } 1572 } 1573 1574 /** 1575 * Go to the history item that is the number of steps away from 1576 * the current item. Steps is negative if backward and positive 1577 * if forward. 1578 * @param steps The number of steps to take back or forward in the back 1579 * forward list. 1580 */ 1581 public void goBackOrForward(int steps) { 1582 goBackOrForward(steps, false); 1583 } 1584 1585 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1586 // every time we go back or forward, we want to reset the 1587 // WebView certificate: 1588 // if the new site is secure, we will reload it and get a 1589 // new certificate set; 1590 // if the new site is not secure, the certificate must be 1591 // null, and that will be the case 1592 mCertificate = null; 1593 if (steps != 0) { 1594 clearTextEntry(false); 1595 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1596 ignoreSnapshot ? 1 : 0); 1597 } 1598 } 1599 1600 private boolean extendScroll(int y) { 1601 int finalY = mScroller.getFinalY(); 1602 int newY = pinLocY(finalY + y); 1603 if (newY == finalY) return false; 1604 mScroller.setFinalY(newY); 1605 mScroller.extendDuration(computeDuration(0, y)); 1606 return true; 1607 } 1608 1609 /** 1610 * Scroll the contents of the view up by half the view size 1611 * @param top true to jump to the top of the page 1612 * @return true if the page was scrolled 1613 */ 1614 public boolean pageUp(boolean top) { 1615 if (mNativeClass == 0) { 1616 return false; 1617 } 1618 nativeClearCursor(); // start next trackball movement from page edge 1619 if (top) { 1620 // go to the top of the document 1621 return pinScrollTo(mScrollX, 0, true, 0); 1622 } 1623 // Page up 1624 int h = getHeight(); 1625 int y; 1626 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1627 y = -h + PAGE_SCROLL_OVERLAP; 1628 } else { 1629 y = -h / 2; 1630 } 1631 mUserScroll = true; 1632 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1633 : extendScroll(y); 1634 } 1635 1636 /** 1637 * Scroll the contents of the view down by half the page size 1638 * @param bottom true to jump to bottom of page 1639 * @return true if the page was scrolled 1640 */ 1641 public boolean pageDown(boolean bottom) { 1642 if (mNativeClass == 0) { 1643 return false; 1644 } 1645 nativeClearCursor(); // start next trackball movement from page edge 1646 if (bottom) { 1647 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1648 } 1649 // Page down. 1650 int h = getHeight(); 1651 int y; 1652 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1653 y = h - PAGE_SCROLL_OVERLAP; 1654 } else { 1655 y = h / 2; 1656 } 1657 mUserScroll = true; 1658 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1659 : extendScroll(y); 1660 } 1661 1662 /** 1663 * Clear the view so that onDraw() will draw nothing but white background, 1664 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1665 */ 1666 public void clearView() { 1667 mContentWidth = 0; 1668 mContentHeight = 0; 1669 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1670 } 1671 1672 /** 1673 * Return a new picture that captures the current display of the webview. 1674 * This is a copy of the display, and will be unaffected if the webview 1675 * later loads a different URL. 1676 * 1677 * @return a picture containing the current contents of the view. Note this 1678 * picture is of the entire document, and is not restricted to the 1679 * bounds of the view. 1680 */ 1681 public Picture capturePicture() { 1682 if (null == mWebViewCore) return null; // check for out of memory tab 1683 return mWebViewCore.copyContentPicture(); 1684 } 1685 1686 /** 1687 * Return true if the browser is displaying a TextView for text input. 1688 */ 1689 private boolean inEditingMode() { 1690 return mWebTextView != null && mWebTextView.getParent() != null 1691 && mWebTextView.hasFocus(); 1692 } 1693 1694 /** 1695 * Remove the WebTextView. 1696 * @param disableFocusController If true, send a message to webkit 1697 * disabling the focus controller, so the caret stops blinking. 1698 */ 1699 private void clearTextEntry(boolean disableFocusController) { 1700 if (inEditingMode()) { 1701 mWebTextView.remove(); 1702 if (disableFocusController) { 1703 setFocusControllerInactive(); 1704 } 1705 } 1706 } 1707 1708 /** 1709 * Return the current scale of the WebView 1710 * @return The current scale. 1711 */ 1712 public float getScale() { 1713 return mActualScale; 1714 } 1715 1716 /** 1717 * Set the initial scale for the WebView. 0 means default. If 1718 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1719 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1720 * WebView starts will this value as initial scale. 1721 * 1722 * @param scaleInPercent The initial scale in percent. 1723 */ 1724 public void setInitialScale(int scaleInPercent) { 1725 mInitialScaleInPercent = scaleInPercent; 1726 } 1727 1728 /** 1729 * Invoke the graphical zoom picker widget for this WebView. This will 1730 * result in the zoom widget appearing on the screen to control the zoom 1731 * level of this WebView. 1732 */ 1733 public void invokeZoomPicker() { 1734 if (!getSettings().supportZoom()) { 1735 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1736 return; 1737 } 1738 clearTextEntry(false); 1739 if (getSettings().getBuiltInZoomControls()) { 1740 mZoomButtonsController.setVisible(true); 1741 } else { 1742 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1743 mPrivateHandler.postDelayed(mZoomControlRunnable, 1744 ZOOM_CONTROLS_TIMEOUT); 1745 } 1746 } 1747 1748 /** 1749 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1750 * is found and the anchor has a non-javascript url, the HitTestResult type 1751 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1752 * anchor does not have a url or if it is a javascript url, the type will 1753 * be UNKNOWN_TYPE and the url has to be retrieved through 1754 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1755 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1756 * the "extra" field. A type of 1757 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1758 * a child node. If a phone number is found, the HitTestResult type is set 1759 * to PHONE_TYPE and the phone number is set in the "extra" field of 1760 * HitTestResult. If a map address is found, the HitTestResult type is set 1761 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1762 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1763 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1764 * HitTestResult type is set to UNKNOWN_TYPE. 1765 */ 1766 public HitTestResult getHitTestResult() { 1767 if (mNativeClass == 0) { 1768 return null; 1769 } 1770 1771 HitTestResult result = new HitTestResult(); 1772 if (nativeHasCursorNode()) { 1773 if (nativeCursorIsTextInput()) { 1774 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1775 } else { 1776 String text = nativeCursorText(); 1777 if (text != null) { 1778 if (text.startsWith(SCHEME_TEL)) { 1779 result.setType(HitTestResult.PHONE_TYPE); 1780 result.setExtra(text.substring(SCHEME_TEL.length())); 1781 } else if (text.startsWith(SCHEME_MAILTO)) { 1782 result.setType(HitTestResult.EMAIL_TYPE); 1783 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1784 } else if (text.startsWith(SCHEME_GEO)) { 1785 result.setType(HitTestResult.GEO_TYPE); 1786 result.setExtra(URLDecoder.decode(text 1787 .substring(SCHEME_GEO.length()))); 1788 } else if (nativeCursorIsAnchor()) { 1789 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1790 result.setExtra(text); 1791 } 1792 } 1793 } 1794 } 1795 int type = result.getType(); 1796 if (type == HitTestResult.UNKNOWN_TYPE 1797 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1798 // Now check to see if it is an image. 1799 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1800 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1801 String text = nativeImageURI(contentX, contentY); 1802 if (text != null) { 1803 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1804 HitTestResult.IMAGE_TYPE : 1805 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1806 result.setExtra(text); 1807 } 1808 } 1809 return result; 1810 } 1811 1812 // Called by JNI when the DOM has changed the focus. Clear the focus so 1813 // that new keys will go to the newly focused field 1814 private void domChangedFocus() { 1815 if (inEditingMode()) { 1816 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 1817 } 1818 } 1819 /** 1820 * Request the href of an anchor element due to getFocusNodePath returning 1821 * "href." If hrefMsg is null, this method returns immediately and does not 1822 * dispatch hrefMsg to its target. 1823 * 1824 * @param hrefMsg This message will be dispatched with the result of the 1825 * request as the data member with "url" as key. The result can 1826 * be null. 1827 */ 1828 // FIXME: API change required to change the name of this function. We now 1829 // look at the cursor node, and not the focus node. Also, what is 1830 // getFocusNodePath? 1831 public void requestFocusNodeHref(Message hrefMsg) { 1832 if (hrefMsg == null || mNativeClass == 0) { 1833 return; 1834 } 1835 if (nativeCursorIsAnchor()) { 1836 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1837 nativeCursorFramePointer(), nativeCursorNodePointer(), 1838 hrefMsg); 1839 } 1840 } 1841 1842 /** 1843 * Request the url of the image last touched by the user. msg will be sent 1844 * to its target with a String representing the url as its object. 1845 * 1846 * @param msg This message will be dispatched with the result of the request 1847 * as the data member with "url" as key. The result can be null. 1848 */ 1849 public void requestImageRef(Message msg) { 1850 if (0 == mNativeClass) return; // client isn't initialized 1851 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1852 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1853 String ref = nativeImageURI(contentX, contentY); 1854 Bundle data = msg.getData(); 1855 data.putString("url", ref); 1856 msg.setData(data); 1857 msg.sendToTarget(); 1858 } 1859 1860 private static int pinLoc(int x, int viewMax, int docMax) { 1861// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1862 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1863 // pin the short document to the top/left of the screen 1864 x = 0; 1865// Log.d(LOGTAG, "--- center " + x); 1866 } else if (x < 0) { 1867 x = 0; 1868// Log.d(LOGTAG, "--- zero"); 1869 } else if (x + viewMax > docMax) { 1870 x = docMax - viewMax; 1871// Log.d(LOGTAG, "--- pin " + x); 1872 } 1873 return x; 1874 } 1875 1876 // Expects x in view coordinates 1877 private int pinLocX(int x) { 1878 if (mInOverScrollMode) return x; 1879 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1880 } 1881 1882 // Expects y in view coordinates 1883 private int pinLocY(int y) { 1884 if (mInOverScrollMode) return y; 1885 int titleH = getTitleHeight(); 1886 // if the titlebar is still visible, just pin against 0 1887 if (y <= titleH) { 1888 return Math.max(y, 0); 1889 } 1890 // convert to 0-based coordinate (subtract the title height) 1891 // pin(), and then add the title height back in 1892 return pinLoc(y - titleH, getViewHeight(), 1893 computeVerticalScrollRange()) + titleH; 1894 } 1895 1896 /** 1897 * A title bar which is embedded in this WebView, and scrolls along with it 1898 * vertically, but not horizontally. 1899 */ 1900 private View mTitleBar; 1901 1902 /** 1903 * Since we draw the title bar ourselves, we removed the shadow from the 1904 * browser's activity. We do want a shadow at the bottom of the title bar, 1905 * or at the top of the screen if the title bar is not visible. This 1906 * drawable serves that purpose. 1907 */ 1908 private Drawable mTitleShadow; 1909 1910 /** 1911 * Add or remove a title bar to be embedded into the WebView, and scroll 1912 * along with it vertically, while remaining in view horizontally. Pass 1913 * null to remove the title bar from the WebView, and return to drawing 1914 * the WebView normally without translating to account for the title bar. 1915 * @hide 1916 */ 1917 public void setEmbeddedTitleBar(View v) { 1918 if (mTitleBar == v) return; 1919 if (mTitleBar != null) { 1920 removeView(mTitleBar); 1921 } 1922 if (null != v) { 1923 addView(v, new AbsoluteLayout.LayoutParams( 1924 ViewGroup.LayoutParams.MATCH_PARENT, 1925 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1926 if (mTitleShadow == null) { 1927 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1928 com.android.internal.R.drawable.title_bar_shadow); 1929 } 1930 } 1931 mTitleBar = v; 1932 } 1933 1934 /** 1935 * Given a distance in view space, convert it to content space. Note: this 1936 * does not reflect translation, just scaling, so this should not be called 1937 * with coordinates, but should be called for dimensions like width or 1938 * height. 1939 */ 1940 private int viewToContentDimension(int d) { 1941 return Math.round(d * mInvActualScale); 1942 } 1943 1944 /** 1945 * Given an x coordinate in view space, convert it to content space. Also 1946 * may be used for absolute heights (such as for the WebTextView's 1947 * textSize, which is unaffected by the height of the title bar). 1948 */ 1949 /*package*/ int viewToContentX(int x) { 1950 return viewToContentDimension(x); 1951 } 1952 1953 /** 1954 * Given a y coordinate in view space, convert it to content space. 1955 * Takes into account the height of the title bar if there is one 1956 * embedded into the WebView. 1957 */ 1958 /*package*/ int viewToContentY(int y) { 1959 return viewToContentDimension(y - getTitleHeight()); 1960 } 1961 1962 /** 1963 * Given a distance in content space, convert it to view space. Note: this 1964 * does not reflect translation, just scaling, so this should not be called 1965 * with coordinates, but should be called for dimensions like width or 1966 * height. 1967 */ 1968 /*package*/ int contentToViewDimension(int d) { 1969 return Math.round(d * mActualScale); 1970 } 1971 1972 /** 1973 * Given an x coordinate in content space, convert it to view 1974 * space. 1975 */ 1976 /*package*/ int contentToViewX(int x) { 1977 return contentToViewDimension(x); 1978 } 1979 1980 /** 1981 * Given a y coordinate in content space, convert it to view 1982 * space. Takes into account the height of the title bar. 1983 */ 1984 /*package*/ int contentToViewY(int y) { 1985 return contentToViewDimension(y) + getTitleHeight(); 1986 } 1987 1988 private Rect contentToViewRect(Rect x) { 1989 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 1990 contentToViewX(x.right), contentToViewY(x.bottom)); 1991 } 1992 1993 /* To invalidate a rectangle in content coordinates, we need to transform 1994 the rect into view coordinates, so we can then call invalidate(...). 1995 1996 Normally, we would just call contentToView[XY](...), which eventually 1997 calls Math.round(coordinate * mActualScale). However, for invalidates, 1998 we need to account for the slop that occurs with antialiasing. To 1999 address that, we are a little more liberal in the size of the rect that 2000 we invalidate. 2001 2002 This liberal calculation calls floor() for the top/left, and ceil() for 2003 the bottom/right coordinates. This catches the possible extra pixels of 2004 antialiasing that we might have missed with just round(). 2005 */ 2006 2007 // Called by JNI to invalidate the View, given rectangle coordinates in 2008 // content space 2009 private void viewInvalidate(int l, int t, int r, int b) { 2010 final float scale = mActualScale; 2011 final int dy = getTitleHeight(); 2012 invalidate((int)Math.floor(l * scale), 2013 (int)Math.floor(t * scale) + dy, 2014 (int)Math.ceil(r * scale), 2015 (int)Math.ceil(b * scale) + dy); 2016 } 2017 2018 // Called by JNI to invalidate the View after a delay, given rectangle 2019 // coordinates in content space 2020 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2021 final float scale = mActualScale; 2022 final int dy = getTitleHeight(); 2023 postInvalidateDelayed(delay, 2024 (int)Math.floor(l * scale), 2025 (int)Math.floor(t * scale) + dy, 2026 (int)Math.ceil(r * scale), 2027 (int)Math.ceil(b * scale) + dy); 2028 } 2029 2030 private void invalidateContentRect(Rect r) { 2031 viewInvalidate(r.left, r.top, r.right, r.bottom); 2032 } 2033 2034 // stop the scroll animation, and don't let a subsequent fling add 2035 // to the existing velocity 2036 private void abortAnimation() { 2037 mScroller.abortAnimation(); 2038 mLastVelocity = 0; 2039 } 2040 2041 /* call from webcoreview.draw(), so we're still executing in the UI thread 2042 */ 2043 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2044 2045 // premature data from webkit, ignore 2046 if ((w | h) == 0) { 2047 return; 2048 } 2049 2050 // don't abort a scroll animation if we didn't change anything 2051 if (mContentWidth != w || mContentHeight != h) { 2052 // record new dimensions 2053 mContentWidth = w; 2054 mContentHeight = h; 2055 // If history Picture is drawn, don't update scroll. They will be 2056 // updated when we get out of that mode. 2057 if (!mDrawHistory) { 2058 // repin our scroll, taking into account the new content size 2059 int oldX = mScrollX; 2060 int oldY = mScrollY; 2061 mScrollX = pinLocX(mScrollX); 2062 mScrollY = pinLocY(mScrollY); 2063 if (oldX != mScrollX || oldY != mScrollY) { 2064 sendOurVisibleRect(); 2065 } 2066 if (!mScroller.isFinished()) { 2067 // We are in the middle of a scroll. Repin the final scroll 2068 // position. 2069 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2070 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2071 } 2072 } 2073 } 2074 contentSizeChanged(updateLayout); 2075 } 2076 2077 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 2078 boolean force) { 2079 if (scale < mMinZoomScale) { 2080 scale = mMinZoomScale; 2081 // set mInZoomOverview for non mobile sites 2082 if (scale < mDefaultScale) mInZoomOverview = true; 2083 } else if (scale > mMaxZoomScale) { 2084 scale = mMaxZoomScale; 2085 } 2086 if (updateTextWrapScale) { 2087 mTextWrapScale = scale; 2088 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 2089 mLastHeightSent = 0; 2090 } 2091 if (scale != mActualScale || force) { 2092 if (mDrawHistory) { 2093 // If history Picture is drawn, don't update scroll. They will 2094 // be updated when we get out of that mode. 2095 if (scale != mActualScale && !mPreviewZoomOnly) { 2096 mCallbackProxy.onScaleChanged(mActualScale, scale); 2097 } 2098 mActualScale = scale; 2099 mInvActualScale = 1 / scale; 2100 sendViewSizeZoom(); 2101 } else { 2102 // update our scroll so we don't appear to jump 2103 // i.e. keep the center of the doc in the center of the view 2104 2105 int oldX = mScrollX; 2106 int oldY = mScrollY; 2107 float ratio = scale * mInvActualScale; // old inverse 2108 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2109 float sy = ratio * oldY + (ratio - 1) 2110 * (mZoomCenterY - getTitleHeight()); 2111 2112 // now update our new scale and inverse 2113 if (scale != mActualScale && !mPreviewZoomOnly) { 2114 mCallbackProxy.onScaleChanged(mActualScale, scale); 2115 } 2116 mActualScale = scale; 2117 mInvActualScale = 1 / scale; 2118 2119 // Scale all the child views 2120 mViewManager.scaleAll(); 2121 2122 // as we don't have animation for scaling, don't do animation 2123 // for scrolling, as it causes weird intermediate state 2124 // pinScrollTo(Math.round(sx), Math.round(sy)); 2125 mScrollX = pinLocX(Math.round(sx)); 2126 mScrollY = pinLocY(Math.round(sy)); 2127 2128 // update webkit 2129 sendViewSizeZoom(); 2130 sendOurVisibleRect(); 2131 } 2132 } 2133 } 2134 2135 // Used to avoid sending many visible rect messages. 2136 private Rect mLastVisibleRectSent; 2137 private Rect mLastGlobalRect; 2138 2139 private Rect sendOurVisibleRect() { 2140 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2141 2142 Rect rect = new Rect(); 2143 calcOurContentVisibleRect(rect); 2144 // Rect.equals() checks for null input. 2145 if (!rect.equals(mLastVisibleRectSent)) { 2146 Point pos = new Point(rect.left, rect.top); 2147 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2148 nativeMoveGeneration(), 0, pos); 2149 mLastVisibleRectSent = rect; 2150 } 2151 Rect globalRect = new Rect(); 2152 if (getGlobalVisibleRect(globalRect) 2153 && !globalRect.equals(mLastGlobalRect)) { 2154 if (DebugFlags.WEB_VIEW) { 2155 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2156 + globalRect.top + ",r=" + globalRect.right + ",b=" 2157 + globalRect.bottom); 2158 } 2159 // TODO: the global offset is only used by windowRect() 2160 // in ChromeClientAndroid ; other clients such as touch 2161 // and mouse events could return view + screen relative points. 2162 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2163 mLastGlobalRect = globalRect; 2164 } 2165 return rect; 2166 } 2167 2168 // Sets r to be the visible rectangle of our webview in view coordinates 2169 private void calcOurVisibleRect(Rect r) { 2170 Point p = new Point(); 2171 getGlobalVisibleRect(r, p); 2172 r.offset(-p.x, -p.y); 2173 if (mFindIsUp) { 2174 r.bottom -= mFindHeight; 2175 } 2176 } 2177 2178 // Sets r to be our visible rectangle in content coordinates 2179 private void calcOurContentVisibleRect(Rect r) { 2180 calcOurVisibleRect(r); 2181 r.left = viewToContentX(r.left); 2182 // viewToContentY will remove the total height of the title bar. Add 2183 // the visible height back in to account for the fact that if the title 2184 // bar is partially visible, the part of the visible rect which is 2185 // displaying our content is displaced by that amount. 2186 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2187 r.right = viewToContentX(r.right); 2188 r.bottom = viewToContentY(r.bottom); 2189 } 2190 2191 static class ViewSizeData { 2192 int mWidth; 2193 int mHeight; 2194 int mTextWrapWidth; 2195 int mAnchorX; 2196 int mAnchorY; 2197 float mScale; 2198 boolean mIgnoreHeight; 2199 } 2200 2201 /** 2202 * Compute unzoomed width and height, and if they differ from the last 2203 * values we sent, send them to webkit (to be used has new viewport) 2204 * 2205 * @return true if new values were sent 2206 */ 2207 private boolean sendViewSizeZoom() { 2208 if (mPreviewZoomOnly) return false; 2209 2210 int viewWidth = getViewWidth(); 2211 int newWidth = Math.round(viewWidth * mInvActualScale); 2212 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2213 /* 2214 * Because the native side may have already done a layout before the 2215 * View system was able to measure us, we have to send a height of 0 to 2216 * remove excess whitespace when we grow our width. This will trigger a 2217 * layout and a change in content size. This content size change will 2218 * mean that contentSizeChanged will either call this method directly or 2219 * indirectly from onSizeChanged. 2220 */ 2221 if (newWidth > mLastWidthSent && mWrapContent) { 2222 newHeight = 0; 2223 } 2224 // Avoid sending another message if the dimensions have not changed. 2225 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2226 ViewSizeData data = new ViewSizeData(); 2227 data.mWidth = newWidth; 2228 data.mHeight = newHeight; 2229 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2230 data.mScale = mActualScale; 2231 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2232 data.mAnchorX = mAnchorX; 2233 data.mAnchorY = mAnchorY; 2234 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2235 mLastWidthSent = newWidth; 2236 mLastHeightSent = newHeight; 2237 mAnchorX = mAnchorY = 0; 2238 return true; 2239 } 2240 return false; 2241 } 2242 2243 @Override 2244 protected int computeHorizontalScrollRange() { 2245 if (mDrawHistory) { 2246 return mHistoryWidth; 2247 } else { 2248 // to avoid rounding error caused unnecessary scrollbar, use floor 2249 return (int) Math.floor(mContentWidth * mActualScale); 2250 } 2251 } 2252 2253 @Override 2254 protected int computeVerticalScrollRange() { 2255 if (mDrawHistory) { 2256 return mHistoryHeight; 2257 } else { 2258 // to avoid rounding error caused unnecessary scrollbar, use floor 2259 return (int) Math.floor(mContentHeight * mActualScale); 2260 } 2261 } 2262 2263 @Override 2264 protected int computeVerticalScrollOffset() { 2265 return Math.max(mScrollY - getTitleHeight(), 0); 2266 } 2267 2268 @Override 2269 protected int computeVerticalScrollExtent() { 2270 return getViewHeight(); 2271 } 2272 2273 /** @hide */ 2274 @Override 2275 protected void onDrawVerticalScrollBar(Canvas canvas, 2276 Drawable scrollBar, 2277 int l, int t, int r, int b) { 2278 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2279 scrollBar.draw(canvas); 2280 } 2281 2282 @Override 2283 protected void onOverscrolled(int scrollX, int scrollY, boolean clampedX, 2284 boolean clampedY) { 2285 mInOverScrollMode = false; 2286 int maxX = computeMaxScrollX(); 2287 if (Math.abs(mMinZoomScale - mMaxZoomScale) < 0.01f && maxX == 0) { 2288 // do not over scroll x if the page can't be zoomed and it just fits 2289 // the screen 2290 scrollX = pinLocX(scrollX); 2291 } else if (scrollX < 0 || scrollX > maxX) { 2292 mInOverScrollMode = true; 2293 } 2294 if (scrollY < 0 || scrollY > computeMaxScrollY()) { 2295 mInOverScrollMode = true; 2296 } 2297 super.scrollTo(scrollX, scrollY); 2298 } 2299 2300 /** 2301 * Get the url for the current page. This is not always the same as the url 2302 * passed to WebViewClient.onPageStarted because although the load for 2303 * that url has begun, the current page may not have changed. 2304 * @return The url for the current page. 2305 */ 2306 public String getUrl() { 2307 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2308 return h != null ? h.getUrl() : null; 2309 } 2310 2311 /** 2312 * Get the original url for the current page. This is not always the same 2313 * as the url passed to WebViewClient.onPageStarted because although the 2314 * load for that url has begun, the current page may not have changed. 2315 * Also, there may have been redirects resulting in a different url to that 2316 * originally requested. 2317 * @return The url that was originally requested for the current page. 2318 */ 2319 public String getOriginalUrl() { 2320 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2321 return h != null ? h.getOriginalUrl() : null; 2322 } 2323 2324 /** 2325 * Get the title for the current page. This is the title of the current page 2326 * until WebViewClient.onReceivedTitle is called. 2327 * @return The title for the current page. 2328 */ 2329 public String getTitle() { 2330 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2331 return h != null ? h.getTitle() : null; 2332 } 2333 2334 /** 2335 * Get the favicon for the current page. This is the favicon of the current 2336 * page until WebViewClient.onReceivedIcon is called. 2337 * @return The favicon for the current page. 2338 */ 2339 public Bitmap getFavicon() { 2340 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2341 return h != null ? h.getFavicon() : null; 2342 } 2343 2344 /** 2345 * Get the touch icon url for the apple-touch-icon <link> element. 2346 * @hide 2347 */ 2348 public String getTouchIconUrl() { 2349 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2350 return h != null ? h.getTouchIconUrl() : null; 2351 } 2352 2353 /** 2354 * Get the progress for the current page. 2355 * @return The progress for the current page between 0 and 100. 2356 */ 2357 public int getProgress() { 2358 return mCallbackProxy.getProgress(); 2359 } 2360 2361 /** 2362 * @return the height of the HTML content. 2363 */ 2364 public int getContentHeight() { 2365 return mContentHeight; 2366 } 2367 2368 /** 2369 * @return the width of the HTML content. 2370 * @hide 2371 */ 2372 public int getContentWidth() { 2373 return mContentWidth; 2374 } 2375 2376 /** 2377 * Pause all layout, parsing, and javascript timers for all webviews. This 2378 * is a global requests, not restricted to just this webview. This can be 2379 * useful if the application has been paused. 2380 */ 2381 public void pauseTimers() { 2382 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2383 } 2384 2385 /** 2386 * Resume all layout, parsing, and javascript timers for all webviews. 2387 * This will resume dispatching all timers. 2388 */ 2389 public void resumeTimers() { 2390 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2391 } 2392 2393 /** 2394 * Call this to pause any extra processing associated with this view and 2395 * its associated DOM/plugins/javascript/etc. For example, if the view is 2396 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2397 * network traffic. When the view is again "active", call onResume(). 2398 * 2399 * Note that this differs from pauseTimers(), which affects all views/DOMs 2400 * @hide 2401 */ 2402 public void onPause() { 2403 if (!mIsPaused) { 2404 mIsPaused = true; 2405 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2406 } 2407 } 2408 2409 /** 2410 * Call this to balanace a previous call to onPause() 2411 * @hide 2412 */ 2413 public void onResume() { 2414 if (mIsPaused) { 2415 mIsPaused = false; 2416 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2417 } 2418 } 2419 2420 /** 2421 * Returns true if the view is paused, meaning onPause() was called. Calling 2422 * onResume() sets the paused state back to false. 2423 * @hide 2424 */ 2425 public boolean isPaused() { 2426 return mIsPaused; 2427 } 2428 2429 /** 2430 * Call this to inform the view that memory is low so that it can 2431 * free any available memory. 2432 */ 2433 public void freeMemory() { 2434 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2435 } 2436 2437 /** 2438 * Clear the resource cache. Note that the cache is per-application, so 2439 * this will clear the cache for all WebViews used. 2440 * 2441 * @param includeDiskFiles If false, only the RAM cache is cleared. 2442 */ 2443 public void clearCache(boolean includeDiskFiles) { 2444 // Note: this really needs to be a static method as it clears cache for all 2445 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2446 // we can't make this static. 2447 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2448 includeDiskFiles ? 1 : 0, 0); 2449 } 2450 2451 /** 2452 * Make sure that clearing the form data removes the adapter from the 2453 * currently focused textfield if there is one. 2454 */ 2455 public void clearFormData() { 2456 if (inEditingMode()) { 2457 AutoCompleteAdapter adapter = null; 2458 mWebTextView.setAdapterCustom(adapter); 2459 } 2460 } 2461 2462 /** 2463 * Tell the WebView to clear its internal back/forward list. 2464 */ 2465 public void clearHistory() { 2466 mCallbackProxy.getBackForwardList().setClearPending(); 2467 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2468 } 2469 2470 /** 2471 * Clear the SSL preferences table stored in response to proceeding with SSL 2472 * certificate errors. 2473 */ 2474 public void clearSslPreferences() { 2475 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2476 } 2477 2478 /** 2479 * Return the WebBackForwardList for this WebView. This contains the 2480 * back/forward list for use in querying each item in the history stack. 2481 * This is a copy of the private WebBackForwardList so it contains only a 2482 * snapshot of the current state. Multiple calls to this method may return 2483 * different objects. The object returned from this method will not be 2484 * updated to reflect any new state. 2485 */ 2486 public WebBackForwardList copyBackForwardList() { 2487 return mCallbackProxy.getBackForwardList().clone(); 2488 } 2489 2490 /* 2491 * Highlight and scroll to the next occurance of String in findAll. 2492 * Wraps the page infinitely, and scrolls. Must be called after 2493 * calling findAll. 2494 * 2495 * @param forward Direction to search. 2496 */ 2497 public void findNext(boolean forward) { 2498 if (0 == mNativeClass) return; // client isn't initialized 2499 nativeFindNext(forward); 2500 } 2501 2502 /* 2503 * Find all instances of find on the page and highlight them. 2504 * @param find String to find. 2505 * @return int The number of occurances of the String "find" 2506 * that were found. 2507 */ 2508 public int findAll(String find) { 2509 if (0 == mNativeClass) return 0; // client isn't initialized 2510 int result = find != null ? nativeFindAll(find.toLowerCase(), 2511 find.toUpperCase()) : 0; 2512 invalidate(); 2513 mLastFind = find; 2514 return result; 2515 } 2516 2517 /** 2518 * @hide 2519 */ 2520 public void setFindIsUp(boolean isUp) { 2521 mFindIsUp = isUp; 2522 if (isUp) { 2523 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2524 false); 2525 } 2526 if (0 == mNativeClass) return; // client isn't initialized 2527 nativeSetFindIsUp(isUp); 2528 } 2529 2530 // Used to know whether the find dialog is open. Affects whether 2531 // or not we draw the highlights for matches. 2532 private boolean mFindIsUp; 2533 2534 private int mFindHeight; 2535 // Keep track of the last string sent, so we can search again after an 2536 // orientation change or the dismissal of the soft keyboard. 2537 private String mLastFind; 2538 2539 /** 2540 * Return the first substring consisting of the address of a physical 2541 * location. Currently, only addresses in the United States are detected, 2542 * and consist of: 2543 * - a house number 2544 * - a street name 2545 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2546 * - a city name 2547 * - a state or territory, either spelled out or two-letter abbr. 2548 * - an optional 5 digit or 9 digit zip code. 2549 * 2550 * All names must be correctly capitalized, and the zip code, if present, 2551 * must be valid for the state. The street type must be a standard USPS 2552 * spelling or abbreviation. The state or territory must also be spelled 2553 * or abbreviated using USPS standards. The house number may not exceed 2554 * five digits. 2555 * @param addr The string to search for addresses. 2556 * 2557 * @return the address, or if no address is found, return null. 2558 */ 2559 public static String findAddress(String addr) { 2560 return findAddress(addr, false); 2561 } 2562 2563 /** 2564 * @hide 2565 * Return the first substring consisting of the address of a physical 2566 * location. Currently, only addresses in the United States are detected, 2567 * and consist of: 2568 * - a house number 2569 * - a street name 2570 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2571 * - a city name 2572 * - a state or territory, either spelled out or two-letter abbr. 2573 * - an optional 5 digit or 9 digit zip code. 2574 * 2575 * Names are optionally capitalized, and the zip code, if present, 2576 * must be valid for the state. The street type must be a standard USPS 2577 * spelling or abbreviation. The state or territory must also be spelled 2578 * or abbreviated using USPS standards. The house number may not exceed 2579 * five digits. 2580 * @param addr The string to search for addresses. 2581 * @param caseInsensitive addr Set to true to make search ignore case. 2582 * 2583 * @return the address, or if no address is found, return null. 2584 */ 2585 public static String findAddress(String addr, boolean caseInsensitive) { 2586 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2587 } 2588 2589 /* 2590 * Clear the highlighting surrounding text matches created by findAll. 2591 */ 2592 public void clearMatches() { 2593 mLastFind = ""; 2594 if (mNativeClass == 0) 2595 return; 2596 nativeSetFindIsEmpty(); 2597 invalidate(); 2598 } 2599 2600 /** 2601 * @hide 2602 */ 2603 public void notifyFindDialogDismissed() { 2604 clearMatches(); 2605 setFindIsUp(false); 2606 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2607 false); 2608 // Now that the dialog has been removed, ensure that we scroll to a 2609 // location that is not beyond the end of the page. 2610 pinScrollTo(mScrollX, mScrollY, false, 0); 2611 invalidate(); 2612 } 2613 2614 /** 2615 * @hide 2616 */ 2617 public void setFindDialogHeight(int height) { 2618 if (DebugFlags.WEB_VIEW) { 2619 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2620 } 2621 mFindHeight = height; 2622 } 2623 2624 /** 2625 * Query the document to see if it contains any image references. The 2626 * message object will be dispatched with arg1 being set to 1 if images 2627 * were found and 0 if the document does not reference any images. 2628 * @param response The message that will be dispatched with the result. 2629 */ 2630 public void documentHasImages(Message response) { 2631 if (response == null) { 2632 return; 2633 } 2634 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2635 } 2636 2637 @Override 2638 public void computeScroll() { 2639 if (mScroller.computeScrollOffset()) { 2640 int oldX = mScrollX; 2641 int oldY = mScrollY; 2642 int x = mScroller.getCurrX(); 2643 int y = mScroller.getCurrY(); 2644 postInvalidate(); // So we draw again 2645 if (oldX != x || oldY != y) { 2646 overscrollBy(x - oldX, y - oldY, oldX, oldY, 2647 computeMaxScrollX(), computeMaxScrollY(), 2648 getViewWidth() / 3, getViewHeight() / 3); 2649 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2650 } 2651 } else { 2652 super.computeScroll(); 2653 } 2654 } 2655 2656 private static int computeDuration(int dx, int dy) { 2657 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2658 int duration = distance * 1000 / STD_SPEED; 2659 return Math.min(duration, MAX_DURATION); 2660 } 2661 2662 // helper to pin the scrollBy parameters (already in view coordinates) 2663 // returns true if the scroll was changed 2664 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2665 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2666 } 2667 // helper to pin the scrollTo parameters (already in view coordinates) 2668 // returns true if the scroll was changed 2669 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2670 x = pinLocX(x); 2671 y = pinLocY(y); 2672 int dx = x - mScrollX; 2673 int dy = y - mScrollY; 2674 2675 if ((dx | dy) == 0) { 2676 return false; 2677 } 2678 if (animate) { 2679 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2680 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2681 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2682 awakenScrollBars(mScroller.getDuration()); 2683 invalidate(); 2684 } else { 2685 abortAnimation(); // just in case 2686 scrollTo(x, y); 2687 } 2688 return true; 2689 } 2690 2691 // Scale from content to view coordinates, and pin. 2692 // Also called by jni webview.cpp 2693 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2694 if (mDrawHistory) { 2695 // disallow WebView to change the scroll position as History Picture 2696 // is used in the view system. 2697 // TODO: as we switchOutDrawHistory when trackball or navigation 2698 // keys are hit, this should be safe. Right? 2699 return false; 2700 } 2701 cx = contentToViewDimension(cx); 2702 cy = contentToViewDimension(cy); 2703 if (mHeightCanMeasure) { 2704 // move our visible rect according to scroll request 2705 if (cy != 0) { 2706 Rect tempRect = new Rect(); 2707 calcOurVisibleRect(tempRect); 2708 tempRect.offset(cx, cy); 2709 requestRectangleOnScreen(tempRect); 2710 } 2711 // FIXME: We scroll horizontally no matter what because currently 2712 // ScrollView and ListView will not scroll horizontally. 2713 // FIXME: Why do we only scroll horizontally if there is no 2714 // vertical scroll? 2715// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2716 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2717 } else { 2718 return pinScrollBy(cx, cy, animate, 0); 2719 } 2720 } 2721 2722 /** 2723 * Called by CallbackProxy when the page finishes loading. 2724 * @param url The URL of the page which has finished loading. 2725 */ 2726 /* package */ void onPageFinished(String url) { 2727 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 2728 // If the user is now on a different page, or has scrolled the page 2729 // past the point where the title bar is offscreen, ignore the 2730 // scroll request. 2731 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 2732 && mScrollX == 0 && mScrollY == 0) { 2733 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 2734 SLIDE_TITLE_DURATION); 2735 } 2736 mPageThatNeedsToSlideTitleBarOffScreen = null; 2737 } 2738 } 2739 2740 /** 2741 * The URL of a page that sent a message to scroll the title bar off screen. 2742 * 2743 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 2744 * title bar off the screen. Sometimes, the scroll position is set before 2745 * the page finishes loading. Rather than scrolling while the page is still 2746 * loading, keep track of the URL and new scroll position so we can perform 2747 * the scroll once the page finishes loading. 2748 */ 2749 private String mPageThatNeedsToSlideTitleBarOffScreen; 2750 2751 /** 2752 * The destination Y scroll position to be used when the page finishes 2753 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 2754 */ 2755 private int mYDistanceToSlideTitleOffScreen; 2756 2757 // scale from content to view coordinates, and pin 2758 // return true if pin caused the final x/y different than the request cx/cy, 2759 // and a future scroll may reach the request cx/cy after our size has 2760 // changed 2761 // return false if the view scroll to the exact position as it is requested, 2762 // where negative numbers are taken to mean 0 2763 private boolean setContentScrollTo(int cx, int cy) { 2764 if (mDrawHistory) { 2765 // disallow WebView to change the scroll position as History Picture 2766 // is used in the view system. 2767 // One known case where this is called is that WebCore tries to 2768 // restore the scroll position. As history Picture already uses the 2769 // saved scroll position, it is ok to skip this. 2770 return false; 2771 } 2772 int vx; 2773 int vy; 2774 if ((cx | cy) == 0) { 2775 // If the page is being scrolled to (0,0), do not add in the title 2776 // bar's height, and simply scroll to (0,0). (The only other work 2777 // in contentToView_ is to multiply, so this would not change 0.) 2778 vx = 0; 2779 vy = 0; 2780 } else { 2781 vx = contentToViewX(cx); 2782 vy = contentToViewY(cy); 2783 } 2784// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2785// vx + " " + vy + "]"); 2786 // Some mobile sites attempt to scroll the title bar off the page by 2787 // scrolling to (0,1). If we are at the top left corner of the 2788 // page, assume this is an attempt to scroll off the title bar, and 2789 // animate the title bar off screen slowly enough that the user can see 2790 // it. 2791 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 2792 && mTitleBar != null) { 2793 // FIXME: 100 should be defined somewhere as our max progress. 2794 if (getProgress() < 100) { 2795 // Wait to scroll the title bar off screen until the page has 2796 // finished loading. Keep track of the URL and the destination 2797 // Y position 2798 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 2799 mYDistanceToSlideTitleOffScreen = vy; 2800 } else { 2801 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2802 } 2803 // Since we are animating, we have not yet reached the desired 2804 // scroll position. Do not return true to request another attempt 2805 return false; 2806 } 2807 pinScrollTo(vx, vy, false, 0); 2808 // If the request was to scroll to a negative coordinate, treat it as if 2809 // it was a request to scroll to 0 2810 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2811 return true; 2812 } else { 2813 return false; 2814 } 2815 } 2816 2817 // scale from content to view coordinates, and pin 2818 private void spawnContentScrollTo(int cx, int cy) { 2819 if (mDrawHistory) { 2820 // disallow WebView to change the scroll position as History Picture 2821 // is used in the view system. 2822 return; 2823 } 2824 int vx = contentToViewX(cx); 2825 int vy = contentToViewY(cy); 2826 pinScrollTo(vx, vy, true, 0); 2827 } 2828 2829 /** 2830 * These are from webkit, and are in content coordinate system (unzoomed) 2831 */ 2832 private void contentSizeChanged(boolean updateLayout) { 2833 // suppress 0,0 since we usually see real dimensions soon after 2834 // this avoids drawing the prev content in a funny place. If we find a 2835 // way to consolidate these notifications, this check may become 2836 // obsolete 2837 if ((mContentWidth | mContentHeight) == 0) { 2838 return; 2839 } 2840 2841 if (mHeightCanMeasure) { 2842 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2843 || updateLayout) { 2844 requestLayout(); 2845 } 2846 } else if (mWidthCanMeasure) { 2847 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2848 || updateLayout) { 2849 requestLayout(); 2850 } 2851 } else { 2852 // If we don't request a layout, try to send our view size to the 2853 // native side to ensure that WebCore has the correct dimensions. 2854 sendViewSizeZoom(); 2855 } 2856 } 2857 2858 /** 2859 * Set the WebViewClient that will receive various notifications and 2860 * requests. This will replace the current handler. 2861 * @param client An implementation of WebViewClient. 2862 */ 2863 public void setWebViewClient(WebViewClient client) { 2864 mCallbackProxy.setWebViewClient(client); 2865 } 2866 2867 /** 2868 * Gets the WebViewClient 2869 * @return the current WebViewClient instance. 2870 * 2871 *@hide pending API council approval. 2872 */ 2873 public WebViewClient getWebViewClient() { 2874 return mCallbackProxy.getWebViewClient(); 2875 } 2876 2877 /** 2878 * Register the interface to be used when content can not be handled by 2879 * the rendering engine, and should be downloaded instead. This will replace 2880 * the current handler. 2881 * @param listener An implementation of DownloadListener. 2882 */ 2883 public void setDownloadListener(DownloadListener listener) { 2884 mCallbackProxy.setDownloadListener(listener); 2885 } 2886 2887 /** 2888 * Set the chrome handler. This is an implementation of WebChromeClient for 2889 * use in handling Javascript dialogs, favicons, titles, and the progress. 2890 * This will replace the current handler. 2891 * @param client An implementation of WebChromeClient. 2892 */ 2893 public void setWebChromeClient(WebChromeClient client) { 2894 mCallbackProxy.setWebChromeClient(client); 2895 } 2896 2897 /** 2898 * Gets the chrome handler. 2899 * @return the current WebChromeClient instance. 2900 * 2901 * @hide API council approval. 2902 */ 2903 public WebChromeClient getWebChromeClient() { 2904 return mCallbackProxy.getWebChromeClient(); 2905 } 2906 2907 /** 2908 * Set the back/forward list client. This is an implementation of 2909 * WebBackForwardListClient for handling new items and changes in the 2910 * history index. 2911 * @param client An implementation of WebBackForwardListClient. 2912 * {@hide} 2913 */ 2914 public void setWebBackForwardListClient(WebBackForwardListClient client) { 2915 mCallbackProxy.setWebBackForwardListClient(client); 2916 } 2917 2918 /** 2919 * Gets the WebBackForwardListClient. 2920 * {@hide} 2921 */ 2922 public WebBackForwardListClient getWebBackForwardListClient() { 2923 return mCallbackProxy.getWebBackForwardListClient(); 2924 } 2925 2926 /** 2927 * Set the Picture listener. This is an interface used to receive 2928 * notifications of a new Picture. 2929 * @param listener An implementation of WebView.PictureListener. 2930 */ 2931 public void setPictureListener(PictureListener listener) { 2932 mPictureListener = listener; 2933 } 2934 2935 /** 2936 * {@hide} 2937 */ 2938 /* FIXME: Debug only! Remove for SDK! */ 2939 public void externalRepresentation(Message callback) { 2940 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2941 } 2942 2943 /** 2944 * {@hide} 2945 */ 2946 /* FIXME: Debug only! Remove for SDK! */ 2947 public void documentAsText(Message callback) { 2948 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2949 } 2950 2951 /** 2952 * Use this function to bind an object to Javascript so that the 2953 * methods can be accessed from Javascript. 2954 * <p><strong>IMPORTANT:</strong> 2955 * <ul> 2956 * <li> Using addJavascriptInterface() allows JavaScript to control your 2957 * application. This can be a very useful feature or a dangerous security 2958 * issue. When the HTML in the WebView is untrustworthy (for example, part 2959 * or all of the HTML is provided by some person or process), then an 2960 * attacker could inject HTML that will execute your code and possibly any 2961 * code of the attacker's choosing.<br> 2962 * Do not use addJavascriptInterface() unless all of the HTML in this 2963 * WebView was written by you.</li> 2964 * <li> The Java object that is bound runs in another thread and not in 2965 * the thread that it was constructed in.</li> 2966 * </ul></p> 2967 * @param obj The class instance to bind to Javascript 2968 * @param interfaceName The name to used to expose the class in Javascript 2969 */ 2970 public void addJavascriptInterface(Object obj, String interfaceName) { 2971 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2972 arg.mObject = obj; 2973 arg.mInterfaceName = interfaceName; 2974 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2975 } 2976 2977 /** 2978 * Return the WebSettings object used to control the settings for this 2979 * WebView. 2980 * @return A WebSettings object that can be used to control this WebView's 2981 * settings. 2982 */ 2983 public WebSettings getSettings() { 2984 return mWebViewCore.getSettings(); 2985 } 2986 2987 /** 2988 * Use this method to inform the webview about packages that are installed 2989 * in the system. This information will be used by the 2990 * navigator.isApplicationInstalled() API. 2991 * @param packageNames is a set of package names that are known to be 2992 * installed in the system. 2993 * 2994 * @hide not a public API 2995 */ 2996 public void addPackageNames(Set<String> packageNames) { 2997 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, packageNames); 2998 } 2999 3000 /** 3001 * Use this method to inform the webview about single packages that are 3002 * installed in the system. This information will be used by the 3003 * navigator.isApplicationInstalled() API. 3004 * @param packageName is the name of a package that is known to be 3005 * installed in the system. 3006 * 3007 * @hide not a public API 3008 */ 3009 public void addPackageName(String packageName) { 3010 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 3011 } 3012 3013 /** 3014 * Use this method to inform the webview about packages that are uninstalled 3015 * in the system. This information will be used by the 3016 * navigator.isApplicationInstalled() API. 3017 * @param packageName is the name of a package that has been uninstalled in 3018 * the system. 3019 * 3020 * @hide not a public API 3021 */ 3022 public void removePackageName(String packageName) { 3023 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 3024 } 3025 3026 /** 3027 * Return the list of currently loaded plugins. 3028 * @return The list of currently loaded plugins. 3029 * 3030 * @deprecated This was used for Gears, which has been deprecated. 3031 */ 3032 @Deprecated 3033 public static synchronized PluginList getPluginList() { 3034 return new PluginList(); 3035 } 3036 3037 /** 3038 * @deprecated This was used for Gears, which has been deprecated. 3039 */ 3040 @Deprecated 3041 public void refreshPlugins(boolean reloadOpenPages) { } 3042 3043 //------------------------------------------------------------------------- 3044 // Override View methods 3045 //------------------------------------------------------------------------- 3046 3047 @Override 3048 protected void finalize() throws Throwable { 3049 try { 3050 destroy(); 3051 } finally { 3052 super.finalize(); 3053 } 3054 } 3055 3056 @Override 3057 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3058 if (child == mTitleBar) { 3059 // When drawing the title bar, move it horizontally to always show 3060 // at the top of the WebView. While overscroll, stick the title bar 3061 // on the top otherwise we may have two during loading, one is drawn 3062 // here, another is drawn by the Browser. 3063 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3064 if (mScrollY <= 0) { 3065 mTitleBar.offsetTopAndBottom(mScrollY - mTitleBar.getTop()); 3066 } 3067 } 3068 return super.drawChild(canvas, child, drawingTime); 3069 } 3070 3071 private void drawContent(Canvas canvas) { 3072 // Update the buttons in the picture, so when we draw the picture 3073 // to the screen, they are in the correct state. 3074 // Tell the native side if user is a) touching the screen, 3075 // b) pressing the trackball down, or c) pressing the enter key 3076 // If the cursor is on a button, we need to draw it in the pressed 3077 // state. 3078 // If mNativeClass is 0, we should not reach here, so we do not 3079 // need to check it again. 3080 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3081 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3082 || mTrackballDown || mGotCenterDown, false); 3083 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3084 } 3085 3086 @Override 3087 protected void onDraw(Canvas canvas) { 3088 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3089 if (mNativeClass == 0) { 3090 return; 3091 } 3092 3093 int saveCount = canvas.save(); 3094 if (mInOverScrollMode) { 3095 if (mOverScrollBackground == null) { 3096 mOverScrollBackground = new Paint(); 3097 Bitmap bm = BitmapFactory.decodeResource( 3098 mContext.getResources(), 3099 com.android.internal.R.drawable.pattern_underwear); 3100 mOverScrollBackground.setShader(new BitmapShader(bm, 3101 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3102 } 3103 int top = getTitleHeight(); 3104 // first draw the background and anchor to the top of the view 3105 canvas.save(); 3106 canvas.translate(mScrollX, mScrollY); 3107 canvas.clipRect(-mScrollX, top - mScrollY, 3108 computeHorizontalScrollRange() - mScrollX, top 3109 + computeVerticalScrollRange() - mScrollY, 3110 Region.Op.DIFFERENCE); 3111 canvas.drawPaint(mOverScrollBackground); 3112 canvas.restore(); 3113 // next clip the region for the content 3114 canvas.clipRect(0, top, computeHorizontalScrollRange(), top 3115 + computeVerticalScrollRange()); 3116 } 3117 if (mTitleBar != null) { 3118 canvas.translate(0, (int) mTitleBar.getHeight()); 3119 } 3120 if (mDragTrackerHandler == null) { 3121 drawContent(canvas); 3122 } else { 3123 if (!mDragTrackerHandler.draw(canvas)) { 3124 // sometimes the tracker doesn't draw, even though its active 3125 drawContent(canvas); 3126 } 3127 if (mDragTrackerHandler.isFinished()) { 3128 mDragTrackerHandler = null; 3129 } 3130 } 3131 canvas.restoreToCount(saveCount); 3132 3133 // Now draw the shadow. 3134 int titleH = getVisibleTitleHeight(); 3135 if (mTitleBar != null && titleH == 0) { 3136 int height = (int) (5f * getContext().getResources() 3137 .getDisplayMetrics().density); 3138 mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(), 3139 mScrollY + height); 3140 mTitleShadow.draw(canvas); 3141 } 3142 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3143 invalidate(); 3144 } 3145 mWebViewCore.signalRepaintDone(); 3146 } 3147 3148 @Override 3149 public void setLayoutParams(ViewGroup.LayoutParams params) { 3150 if (params.height == LayoutParams.WRAP_CONTENT) { 3151 mWrapContent = true; 3152 } 3153 super.setLayoutParams(params); 3154 } 3155 3156 @Override 3157 public boolean performLongClick() { 3158 // performLongClick() is the result of a delayed message. If we switch 3159 // to windows overview, the WebView will be temporarily removed from the 3160 // view system. In that case, do nothing. 3161 if (getParent() == null) return false; 3162 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3163 // Send the click so that the textfield is in focus 3164 centerKeyPressOnTextField(); 3165 rebuildWebTextView(); 3166 } 3167 if (inEditingMode()) { 3168 return mWebTextView.performLongClick(); 3169 } else { 3170 return super.performLongClick(); 3171 } 3172 } 3173 3174 boolean inAnimateZoom() { 3175 return mZoomScale != 0; 3176 } 3177 3178 /** 3179 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3180 * has changed. This is especially important for password fields, which are 3181 * drawn by the WebTextView, since it conveys more information than what 3182 * webkit draws. Thus we need to reposition it to show in the correct 3183 * place. 3184 */ 3185 private boolean mNeedToAdjustWebTextView; 3186 3187 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3188 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3189 Rect vBox = contentToViewRect(contentBounds); 3190 Rect visibleRect = new Rect(); 3191 calcOurVisibleRect(visibleRect); 3192 // If the textfield is on screen, place the WebTextView in 3193 // its new place, accounting for our new scroll/zoom values, 3194 // and adjust its textsize. 3195 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3196 : visibleRect.contains(vBox)) { 3197 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3198 vBox.height()); 3199 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3200 contentToViewDimension( 3201 nativeFocusCandidateTextSize())); 3202 return true; 3203 } else { 3204 // The textfield is now off screen. The user probably 3205 // was not zooming to see the textfield better. Remove 3206 // the WebTextView. If the user types a key, and the 3207 // textfield is still in focus, we will reconstruct 3208 // the WebTextView and scroll it back on screen. 3209 mWebTextView.remove(); 3210 return false; 3211 } 3212 } 3213 3214 private static class Metrics { 3215 int mScrollX; 3216 int mScrollY; 3217 int mWidth; 3218 int mHeight; 3219 float mInvScale; 3220 } 3221 3222 private Metrics getViewMetrics() { 3223 Metrics metrics = new Metrics(); 3224 metrics.mScrollX = mScrollX; 3225 metrics.mScrollY = computeVerticalScrollOffset(); 3226 metrics.mWidth = getWidth(); 3227 metrics.mHeight = getHeight() - getVisibleTitleHeight(); 3228 if (mFindIsUp) { 3229 metrics.mHeight -= mFindHeight; 3230 } 3231 metrics.mInvScale = mInvActualScale; 3232 return metrics; 3233 } 3234 3235 private void drawExtras(Canvas canvas, int extras) { 3236 // If mNativeClass is 0, we should not reach here, so we do not 3237 // need to check it again. 3238 // Currently for each draw we compute the animation values; 3239 // We may in the future decide to do that independently. 3240 if (nativeEvaluateLayersAnimations()) { 3241 // If we have unfinished (or unstarted) animations, 3242 // we ask for a repaint. 3243 invalidate(); 3244 } 3245 3246 nativeDrawExtras(canvas, extras); 3247 } 3248 3249 private void drawCoreAndCursorRing(Canvas canvas, int color, 3250 boolean drawCursorRing) { 3251 if (mDrawHistory) { 3252 canvas.scale(mActualScale, mActualScale); 3253 canvas.drawPicture(mHistoryPicture); 3254 return; 3255 } 3256 3257 boolean animateZoom = mZoomScale != 0; 3258 boolean animateScroll = (!mScroller.isFinished() 3259 || mVelocityTracker != null) 3260 && (mTouchMode != TOUCH_DRAG_MODE || 3261 mHeldMotionless != MOTIONLESS_TRUE); 3262 if (mTouchMode == TOUCH_DRAG_MODE) { 3263 if (mHeldMotionless == MOTIONLESS_PENDING) { 3264 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3265 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3266 mHeldMotionless = MOTIONLESS_FALSE; 3267 } 3268 if (mHeldMotionless == MOTIONLESS_FALSE) { 3269 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3270 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3271 mHeldMotionless = MOTIONLESS_PENDING; 3272 } 3273 } 3274 if (animateZoom) { 3275 float zoomScale; 3276 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 3277 if (interval < ZOOM_ANIMATION_LENGTH) { 3278 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 3279 zoomScale = 1.0f / (mInvInitialZoomScale 3280 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 3281 invalidate(); 3282 } else { 3283 zoomScale = mZoomScale; 3284 // set mZoomScale to be 0 as we have done animation 3285 mZoomScale = 0; 3286 WebViewCore.resumeUpdatePicture(mWebViewCore); 3287 // call invalidate() again to draw with the final filters 3288 invalidate(); 3289 if (mNeedToAdjustWebTextView) { 3290 mNeedToAdjustWebTextView = false; 3291 if (didUpdateTextViewBounds(false) 3292 && nativeFocusCandidateIsPassword()) { 3293 // If it is a password field, start drawing the 3294 // WebTextView once again. 3295 mWebTextView.setInPassword(true); 3296 } 3297 } 3298 } 3299 // calculate the intermediate scroll position. As we need to use 3300 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 3301 float scale = zoomScale * mInvInitialZoomScale; 3302 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 3303 - mZoomCenterX); 3304 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 3305 * zoomScale)) + mScrollX; 3306 int titleHeight = getTitleHeight(); 3307 int ty = Math.round(scale 3308 * (mInitialScrollY + mZoomCenterY - titleHeight) 3309 - (mZoomCenterY - titleHeight)); 3310 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 3311 - titleHeight, getViewHeight(), Math.round(mContentHeight 3312 * zoomScale)) + titleHeight) + mScrollY; 3313 canvas.translate(tx, ty); 3314 canvas.scale(zoomScale, zoomScale); 3315 if (inEditingMode() && !mNeedToAdjustWebTextView 3316 && mZoomScale != 0) { 3317 // The WebTextView is up. Keep track of this so we can adjust 3318 // its size and placement when we finish zooming 3319 mNeedToAdjustWebTextView = true; 3320 // If it is in password mode, turn it off so it does not draw 3321 // misplaced. 3322 if (nativeFocusCandidateIsPassword()) { 3323 mWebTextView.setInPassword(false); 3324 } 3325 } 3326 } else { 3327 canvas.scale(mActualScale, mActualScale); 3328 } 3329 3330 mWebViewCore.drawContentPicture(canvas, color, 3331 (animateZoom || mPreviewZoomOnly), animateScroll); 3332 if (mNativeClass == 0) return; 3333 // decide which adornments to draw 3334 int extras = DRAW_EXTRAS_NONE; 3335 if (mFindIsUp) { 3336 // When the FindDialog is up, only draw the matches if we are not in 3337 // the process of scrolling them into view. 3338 if (!animateScroll) { 3339 extras = DRAW_EXTRAS_FIND; 3340 } 3341 } else if (mShiftIsPressed) { 3342 if (!animateZoom && !mPreviewZoomOnly) { 3343 extras = DRAW_EXTRAS_SELECTION; 3344 nativeSetSelectionRegion(mTouchSelection || mExtendSelection); 3345 nativeSetSelectionPointer(!mTouchSelection, mInvActualScale, 3346 mSelectX, mSelectY - getTitleHeight(), 3347 mExtendSelection); 3348 } 3349 } else if (drawCursorRing) { 3350 extras = DRAW_EXTRAS_CURSOR_RING; 3351 } 3352 drawExtras(canvas, extras); 3353 3354 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3355 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3356 mTouchMode = TOUCH_SHORTPRESS_MODE; 3357 HitTestResult hitTest = getHitTestResult(); 3358 if (mPreventLongPress || (hitTest != null && 3359 hitTest.mType != HitTestResult.UNKNOWN_TYPE)) { 3360 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3361 .obtainMessage(SWITCH_TO_LONGPRESS), 3362 LONG_PRESS_TIMEOUT); 3363 } 3364 } 3365 } 3366 if (mFocusSizeChanged) { 3367 mFocusSizeChanged = false; 3368 // If we are zooming, this will get handled above, when the zoom 3369 // finishes. We also do not need to do this unless the WebTextView 3370 // is showing. 3371 if (!animateZoom && inEditingMode()) { 3372 didUpdateTextViewBounds(true); 3373 } 3374 } 3375 } 3376 3377 // draw history 3378 private boolean mDrawHistory = false; 3379 private Picture mHistoryPicture = null; 3380 private int mHistoryWidth = 0; 3381 private int mHistoryHeight = 0; 3382 3383 // Only check the flag, can be called from WebCore thread 3384 boolean drawHistory() { 3385 return mDrawHistory; 3386 } 3387 3388 // Should only be called in UI thread 3389 void switchOutDrawHistory() { 3390 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3391 if (mDrawHistory && mWebViewCore.pictureReady()) { 3392 mDrawHistory = false; 3393 invalidate(); 3394 int oldScrollX = mScrollX; 3395 int oldScrollY = mScrollY; 3396 mScrollX = pinLocX(mScrollX); 3397 mScrollY = pinLocY(mScrollY); 3398 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3399 mUserScroll = false; 3400 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3401 oldScrollY); 3402 } 3403 sendOurVisibleRect(); 3404 } 3405 } 3406 3407 WebViewCore.CursorData cursorData() { 3408 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3409 result.mMoveGeneration = nativeMoveGeneration(); 3410 result.mFrame = nativeCursorFramePointer(); 3411 Point position = nativeCursorPosition(); 3412 result.mX = position.x; 3413 result.mY = position.y; 3414 return result; 3415 } 3416 3417 /** 3418 * Delete text from start to end in the focused textfield. If there is no 3419 * focus, or if start == end, silently fail. If start and end are out of 3420 * order, swap them. 3421 * @param start Beginning of selection to delete. 3422 * @param end End of selection to delete. 3423 */ 3424 /* package */ void deleteSelection(int start, int end) { 3425 mTextGeneration++; 3426 WebViewCore.TextSelectionData data 3427 = new WebViewCore.TextSelectionData(start, end); 3428 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3429 data); 3430 } 3431 3432 /** 3433 * Set the selection to (start, end) in the focused textfield. If start and 3434 * end are out of order, swap them. 3435 * @param start Beginning of selection. 3436 * @param end End of selection. 3437 */ 3438 /* package */ void setSelection(int start, int end) { 3439 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3440 } 3441 3442 @Override 3443 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3444 InputConnection connection = super.onCreateInputConnection(outAttrs); 3445 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3446 return connection; 3447 } 3448 3449 /** 3450 * Called in response to a message from webkit telling us that the soft 3451 * keyboard should be launched. 3452 */ 3453 private void displaySoftKeyboard(boolean isTextView) { 3454 InputMethodManager imm = (InputMethodManager) 3455 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3456 3457 // bring it back to the default scale so that user can enter text 3458 boolean zoom = mActualScale < mDefaultScale; 3459 if (zoom) { 3460 mInZoomOverview = false; 3461 mZoomCenterX = mLastTouchX; 3462 mZoomCenterY = mLastTouchY; 3463 // do not change text wrap scale so that there is no reflow 3464 setNewZoomScale(mDefaultScale, false, false); 3465 } 3466 if (isTextView) { 3467 rebuildWebTextView(); 3468 if (inEditingMode()) { 3469 imm.showSoftInput(mWebTextView, 0); 3470 if (zoom) { 3471 didUpdateTextViewBounds(true); 3472 } 3473 return; 3474 } 3475 } 3476 // Used by plugins. 3477 // Also used if the navigation cache is out of date, and 3478 // does not recognize that a textfield is in focus. In that 3479 // case, use WebView as the targeted view. 3480 // see http://b/issue?id=2457459 3481 imm.showSoftInput(this, 0); 3482 } 3483 3484 // Called by WebKit to instruct the UI to hide the keyboard 3485 private void hideSoftKeyboard() { 3486 InputMethodManager imm = (InputMethodManager) 3487 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3488 3489 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3490 } 3491 3492 /* 3493 * This method checks the current focus and cursor and potentially rebuilds 3494 * mWebTextView to have the appropriate properties, such as password, 3495 * multiline, and what text it contains. It also removes it if necessary. 3496 */ 3497 /* package */ void rebuildWebTextView() { 3498 // If the WebView does not have focus, do nothing until it gains focus. 3499 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3500 return; 3501 } 3502 boolean alreadyThere = inEditingMode(); 3503 // inEditingMode can only return true if mWebTextView is non-null, 3504 // so we can safely call remove() if (alreadyThere) 3505 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3506 if (alreadyThere) { 3507 mWebTextView.remove(); 3508 } 3509 return; 3510 } 3511 // At this point, we know we have found an input field, so go ahead 3512 // and create the WebTextView if necessary. 3513 if (mWebTextView == null) { 3514 mWebTextView = new WebTextView(mContext, WebView.this); 3515 // Initialize our generation number. 3516 mTextGeneration = 0; 3517 } 3518 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3519 contentToViewDimension(nativeFocusCandidateTextSize())); 3520 Rect visibleRect = new Rect(); 3521 calcOurContentVisibleRect(visibleRect); 3522 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3523 // should be in content coordinates. 3524 Rect bounds = nativeFocusCandidateNodeBounds(); 3525 Rect vBox = contentToViewRect(bounds); 3526 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3527 if (!Rect.intersects(bounds, visibleRect)) { 3528 mWebTextView.bringIntoView(); 3529 } 3530 String text = nativeFocusCandidateText(); 3531 int nodePointer = nativeFocusCandidatePointer(); 3532 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3533 // It is possible that we have the same textfield, but it has moved, 3534 // i.e. In the case of opening/closing the screen. 3535 // In that case, we need to set the dimensions, but not the other 3536 // aspects. 3537 // If the text has been changed by webkit, update it. However, if 3538 // there has been more UI text input, ignore it. We will receive 3539 // another update when that text is recognized. 3540 if (text != null && !text.equals(mWebTextView.getText().toString()) 3541 && nativeTextGeneration() == mTextGeneration) { 3542 mWebTextView.setTextAndKeepSelection(text); 3543 } 3544 } else { 3545 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3546 Gravity.RIGHT : Gravity.NO_GRAVITY); 3547 // This needs to be called before setType, which may call 3548 // requestFormData, and it needs to have the correct nodePointer. 3549 mWebTextView.setNodePointer(nodePointer); 3550 mWebTextView.setType(nativeFocusCandidateType()); 3551 if (null == text) { 3552 if (DebugFlags.WEB_VIEW) { 3553 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3554 } 3555 text = ""; 3556 } 3557 mWebTextView.setTextAndKeepSelection(text); 3558 InputMethodManager imm = InputMethodManager.peekInstance(); 3559 if (imm != null && imm.isActive(mWebTextView)) { 3560 imm.restartInput(mWebTextView); 3561 } 3562 } 3563 mWebTextView.requestFocus(); 3564 } 3565 3566 /** 3567 * Called by WebTextView to find saved form data associated with the 3568 * textfield 3569 * @param name Name of the textfield. 3570 * @param nodePointer Pointer to the node of the textfield, so it can be 3571 * compared to the currently focused textfield when the data is 3572 * retrieved. 3573 */ 3574 /* package */ void requestFormData(String name, int nodePointer) { 3575 if (mWebViewCore.getSettings().getSaveFormData()) { 3576 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3577 update.arg1 = nodePointer; 3578 RequestFormData updater = new RequestFormData(name, getUrl(), 3579 update); 3580 Thread t = new Thread(updater); 3581 t.start(); 3582 } 3583 } 3584 3585 /** 3586 * Pass a message to find out the <label> associated with the <input> 3587 * identified by nodePointer 3588 * @param framePointer Pointer to the frame containing the <input> node 3589 * @param nodePointer Pointer to the node for which a <label> is desired. 3590 */ 3591 /* package */ void requestLabel(int framePointer, int nodePointer) { 3592 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3593 nodePointer); 3594 } 3595 3596 /* 3597 * This class requests an Adapter for the WebTextView which shows past 3598 * entries stored in the database. It is a Runnable so that it can be done 3599 * in its own thread, without slowing down the UI. 3600 */ 3601 private class RequestFormData implements Runnable { 3602 private String mName; 3603 private String mUrl; 3604 private Message mUpdateMessage; 3605 3606 public RequestFormData(String name, String url, Message msg) { 3607 mName = name; 3608 mUrl = url; 3609 mUpdateMessage = msg; 3610 } 3611 3612 public void run() { 3613 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3614 if (pastEntries.size() > 0) { 3615 AutoCompleteAdapter adapter = new 3616 AutoCompleteAdapter(mContext, pastEntries); 3617 mUpdateMessage.obj = adapter; 3618 mUpdateMessage.sendToTarget(); 3619 } 3620 } 3621 } 3622 3623 /** 3624 * Dump the display tree to "/sdcard/displayTree.txt" 3625 * 3626 * @hide debug only 3627 */ 3628 public void dumpDisplayTree() { 3629 nativeDumpDisplayTree(getUrl()); 3630 } 3631 3632 /** 3633 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 3634 * "/sdcard/domTree.txt" 3635 * 3636 * @hide debug only 3637 */ 3638 public void dumpDomTree(boolean toFile) { 3639 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 3640 } 3641 3642 /** 3643 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 3644 * to "/sdcard/renderTree.txt" 3645 * 3646 * @hide debug only 3647 */ 3648 public void dumpRenderTree(boolean toFile) { 3649 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 3650 } 3651 3652 /** 3653 * Dump the V8 counters to standard output. 3654 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 3655 * true. Otherwise, this will do nothing. 3656 * 3657 * @hide debug only 3658 */ 3659 public void dumpV8Counters() { 3660 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 3661 } 3662 3663 // This is used to determine long press with the center key. Does not 3664 // affect long press with the trackball/touch. 3665 private boolean mGotCenterDown = false; 3666 3667 @Override 3668 public boolean onKeyDown(int keyCode, KeyEvent event) { 3669 if (DebugFlags.WEB_VIEW) { 3670 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3671 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3672 } 3673 3674 if (mNativeClass == 0) { 3675 return false; 3676 } 3677 3678 // do this hack up front, so it always works, regardless of touch-mode 3679 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3680 mAutoRedraw = !mAutoRedraw; 3681 if (mAutoRedraw) { 3682 invalidate(); 3683 } 3684 return true; 3685 } 3686 3687 // Bubble up the key event if 3688 // 1. it is a system key; or 3689 // 2. the host application wants to handle it; 3690 if (event.isSystem() 3691 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3692 return false; 3693 } 3694 3695 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3696 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3697 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3698 setUpSelectXY(); 3699 } 3700 3701 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3702 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3703 // always handle the navigation keys in the UI thread 3704 switchOutDrawHistory(); 3705 if (mShiftIsPressed) { 3706 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 3707 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 3708 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 3709 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 3710 int multiplier = event.getRepeatCount() + 1; 3711 moveSelection(xRate * multiplier, yRate * multiplier); 3712 return true; 3713 } 3714 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3715 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3716 return true; 3717 } 3718 // Bubble up the key event as WebView doesn't handle it 3719 return false; 3720 } 3721 3722 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3723 switchOutDrawHistory(); 3724 if (event.getRepeatCount() == 0) { 3725 if (mShiftIsPressed) { 3726 return true; // discard press if copy in progress 3727 } 3728 mGotCenterDown = true; 3729 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3730 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3731 // Already checked mNativeClass, so we do not need to check it 3732 // again. 3733 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3734 return true; 3735 } 3736 // Bubble up the key event as WebView doesn't handle it 3737 return false; 3738 } 3739 3740 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3741 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3742 // turn off copy select if a shift-key combo is pressed 3743 mExtendSelection = mShiftIsPressed = false; 3744 if (mTouchMode == TOUCH_SELECT_MODE) { 3745 mTouchMode = TOUCH_INIT_MODE; 3746 } 3747 } 3748 3749 if (getSettings().getNavDump()) { 3750 switch (keyCode) { 3751 case KeyEvent.KEYCODE_4: 3752 dumpDisplayTree(); 3753 break; 3754 case KeyEvent.KEYCODE_5: 3755 case KeyEvent.KEYCODE_6: 3756 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 3757 break; 3758 case KeyEvent.KEYCODE_7: 3759 case KeyEvent.KEYCODE_8: 3760 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 3761 break; 3762 case KeyEvent.KEYCODE_9: 3763 nativeInstrumentReport(); 3764 return true; 3765 } 3766 } 3767 3768 if (nativeCursorIsTextInput()) { 3769 // This message will put the node in focus, for the DOM's notion 3770 // of focus, and make the focuscontroller active 3771 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3772 nativeCursorNodePointer()); 3773 // This will bring up the WebTextView and put it in focus, for 3774 // our view system's notion of focus 3775 rebuildWebTextView(); 3776 // Now we need to pass the event to it 3777 if (inEditingMode()) { 3778 mWebTextView.setDefaultSelection(); 3779 return mWebTextView.dispatchKeyEvent(event); 3780 } 3781 } else if (nativeHasFocusNode()) { 3782 // In this case, the cursor is not on a text input, but the focus 3783 // might be. Check it, and if so, hand over to the WebTextView. 3784 rebuildWebTextView(); 3785 if (inEditingMode()) { 3786 mWebTextView.setDefaultSelection(); 3787 return mWebTextView.dispatchKeyEvent(event); 3788 } 3789 } 3790 3791 // TODO: should we pass all the keys to DOM or check the meta tag 3792 if (nativeCursorWantsKeyEvents() || true) { 3793 // pass the key to DOM 3794 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3795 // return true as DOM handles the key 3796 return true; 3797 } 3798 3799 // Bubble up the key event as WebView doesn't handle it 3800 return false; 3801 } 3802 3803 @Override 3804 public boolean onKeyUp(int keyCode, KeyEvent event) { 3805 if (DebugFlags.WEB_VIEW) { 3806 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3807 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3808 } 3809 3810 if (mNativeClass == 0) { 3811 return false; 3812 } 3813 3814 // special CALL handling when cursor node's href is "tel:XXX" 3815 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3816 String text = nativeCursorText(); 3817 if (!nativeCursorIsTextInput() && text != null 3818 && text.startsWith(SCHEME_TEL)) { 3819 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3820 getContext().startActivity(intent); 3821 return true; 3822 } 3823 } 3824 3825 // Bubble up the key event if 3826 // 1. it is a system key; or 3827 // 2. the host application wants to handle it; 3828 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3829 return false; 3830 } 3831 3832 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3833 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3834 if (commitCopy()) { 3835 return true; 3836 } 3837 } 3838 3839 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3840 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3841 // always handle the navigation keys in the UI thread 3842 // Bubble up the key event as WebView doesn't handle it 3843 return false; 3844 } 3845 3846 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3847 // remove the long press message first 3848 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3849 mGotCenterDown = false; 3850 3851 if (mShiftIsPressed) { 3852 if (mExtendSelection) { 3853 commitCopy(); 3854 } else { 3855 mExtendSelection = true; 3856 invalidate(); // draw the i-beam instead of the arrow 3857 } 3858 return true; // discard press if copy in progress 3859 } 3860 3861 // perform the single click 3862 Rect visibleRect = sendOurVisibleRect(); 3863 // Note that sendOurVisibleRect calls viewToContent, so the 3864 // coordinates should be in content coordinates. 3865 if (!nativeCursorIntersects(visibleRect)) { 3866 return false; 3867 } 3868 WebViewCore.CursorData data = cursorData(); 3869 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3870 playSoundEffect(SoundEffectConstants.CLICK); 3871 if (nativeCursorIsTextInput()) { 3872 rebuildWebTextView(); 3873 centerKeyPressOnTextField(); 3874 if (inEditingMode()) { 3875 mWebTextView.setDefaultSelection(); 3876 } 3877 return true; 3878 } 3879 clearTextEntry(true); 3880 nativeSetFollowedLink(true); 3881 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 3882 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3883 nativeCursorNodePointer()); 3884 } 3885 return true; 3886 } 3887 3888 // TODO: should we pass all the keys to DOM or check the meta tag 3889 if (nativeCursorWantsKeyEvents() || true) { 3890 // pass the key to DOM 3891 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3892 // return true as DOM handles the key 3893 return true; 3894 } 3895 3896 // Bubble up the key event as WebView doesn't handle it 3897 return false; 3898 } 3899 3900 private void setUpSelectXY() { 3901 mExtendSelection = false; 3902 mShiftIsPressed = true; 3903 if (nativeHasCursorNode()) { 3904 Rect rect = nativeCursorNodeBounds(); 3905 mSelectX = contentToViewX(rect.left); 3906 mSelectY = contentToViewY(rect.top); 3907 } else if (mLastTouchY > getVisibleTitleHeight()) { 3908 mSelectX = mScrollX + (int) mLastTouchX; 3909 mSelectY = mScrollY + (int) mLastTouchY; 3910 } else { 3911 mSelectX = mScrollX + getViewWidth() / 2; 3912 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 3913 } 3914 nativeHideCursor(); 3915 } 3916 3917 /** 3918 * Use this method to put the WebView into text selection mode. 3919 * Do not rely on this functionality; it will be deprecated in the future. 3920 */ 3921 public void emulateShiftHeld() { 3922 if (0 == mNativeClass) return; // client isn't initialized 3923 setUpSelectXY(); 3924 } 3925 3926 private boolean commitCopy() { 3927 boolean copiedSomething = false; 3928 if (mExtendSelection) { 3929 String selection = nativeGetSelection(); 3930 if (selection != "") { 3931 if (DebugFlags.WEB_VIEW) { 3932 Log.v(LOGTAG, "commitCopy \"" + selection + "\""); 3933 } 3934 Toast.makeText(mContext 3935 , com.android.internal.R.string.text_copied 3936 , Toast.LENGTH_SHORT).show(); 3937 copiedSomething = true; 3938 try { 3939 IClipboard clip = IClipboard.Stub.asInterface( 3940 ServiceManager.getService("clipboard")); 3941 clip.setClipboardText(selection); 3942 } catch (android.os.RemoteException e) { 3943 Log.e(LOGTAG, "Clipboard failed", e); 3944 } 3945 } 3946 mExtendSelection = false; 3947 } 3948 mShiftIsPressed = false; 3949 invalidate(); // remove selection region and pointer 3950 if (mTouchMode == TOUCH_SELECT_MODE) { 3951 mTouchMode = TOUCH_INIT_MODE; 3952 } 3953 return copiedSomething; 3954 } 3955 3956 @Override 3957 protected void onAttachedToWindow() { 3958 super.onAttachedToWindow(); 3959 if (hasWindowFocus()) onWindowFocusChanged(true); 3960 } 3961 3962 @Override 3963 protected void onDetachedFromWindow() { 3964 clearTextEntry(false); 3965 super.onDetachedFromWindow(); 3966 // Clean up the zoom controller 3967 mZoomButtonsController.setVisible(false); 3968 } 3969 3970 /** 3971 * @deprecated WebView no longer needs to implement 3972 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3973 */ 3974 @Deprecated 3975 public void onChildViewAdded(View parent, View child) {} 3976 3977 /** 3978 * @deprecated WebView no longer needs to implement 3979 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3980 */ 3981 @Deprecated 3982 public void onChildViewRemoved(View p, View child) {} 3983 3984 /** 3985 * @deprecated WebView should not have implemented 3986 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3987 * does nothing now. 3988 */ 3989 @Deprecated 3990 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3991 } 3992 3993 // To avoid drawing the cursor ring, and remove the TextView when our window 3994 // loses focus. 3995 @Override 3996 public void onWindowFocusChanged(boolean hasWindowFocus) { 3997 if (hasWindowFocus) { 3998 if (hasFocus()) { 3999 // If our window regained focus, and we have focus, then begin 4000 // drawing the cursor ring 4001 mDrawCursorRing = true; 4002 if (mNativeClass != 0) { 4003 nativeRecordButtons(true, false, true); 4004 if (inEditingMode()) { 4005 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 4006 } 4007 } 4008 } else { 4009 // If our window gained focus, but we do not have it, do not 4010 // draw the cursor ring. 4011 mDrawCursorRing = false; 4012 // We do not call nativeRecordButtons here because we assume 4013 // that when we lost focus, or window focus, it got called with 4014 // false for the first parameter 4015 } 4016 } else { 4017 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 4018 /* 4019 * The zoom controls come in their own window, so our window 4020 * loses focus. Our policy is to not draw the cursor ring if 4021 * our window is not focused, but this is an exception since 4022 * the user can still navigate the web page with the zoom 4023 * controls showing. 4024 */ 4025 // If our window has lost focus, stop drawing the cursor ring 4026 mDrawCursorRing = false; 4027 } 4028 mGotKeyDown = false; 4029 mShiftIsPressed = false; 4030 if (mNativeClass != 0) { 4031 nativeRecordButtons(false, false, true); 4032 } 4033 setFocusControllerInactive(); 4034 } 4035 invalidate(); 4036 super.onWindowFocusChanged(hasWindowFocus); 4037 } 4038 4039 /* 4040 * Pass a message to WebCore Thread, telling the WebCore::Page's 4041 * FocusController to be "inactive" so that it will 4042 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4043 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4044 */ 4045 /* package */ void setFocusControllerInactive() { 4046 // Do not need to also check whether mWebViewCore is null, because 4047 // mNativeClass is only set if mWebViewCore is non null 4048 if (mNativeClass == 0) return; 4049 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 4050 } 4051 4052 @Override 4053 protected void onFocusChanged(boolean focused, int direction, 4054 Rect previouslyFocusedRect) { 4055 if (DebugFlags.WEB_VIEW) { 4056 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4057 } 4058 if (focused) { 4059 // When we regain focus, if we have window focus, resume drawing 4060 // the cursor ring 4061 if (hasWindowFocus()) { 4062 mDrawCursorRing = true; 4063 if (mNativeClass != 0) { 4064 nativeRecordButtons(true, false, true); 4065 } 4066 //} else { 4067 // The WebView has gained focus while we do not have 4068 // windowfocus. When our window lost focus, we should have 4069 // called nativeRecordButtons(false...) 4070 } 4071 } else { 4072 // When we lost focus, unless focus went to the TextView (which is 4073 // true if we are in editing mode), stop drawing the cursor ring. 4074 if (!inEditingMode()) { 4075 mDrawCursorRing = false; 4076 if (mNativeClass != 0) { 4077 nativeRecordButtons(false, false, true); 4078 } 4079 setFocusControllerInactive(); 4080 } 4081 mGotKeyDown = false; 4082 } 4083 4084 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4085 } 4086 4087 /** 4088 * @hide 4089 */ 4090 @Override 4091 protected boolean setFrame(int left, int top, int right, int bottom) { 4092 boolean changed = super.setFrame(left, top, right, bottom); 4093 if (!changed && mHeightCanMeasure) { 4094 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4095 // in WebViewCore after we get the first layout. We do call 4096 // requestLayout() when we get contentSizeChanged(). But the View 4097 // system won't call onSizeChanged if the dimension is not changed. 4098 // In this case, we need to call sendViewSizeZoom() explicitly to 4099 // notify the WebKit about the new dimensions. 4100 sendViewSizeZoom(); 4101 } 4102 return changed; 4103 } 4104 4105 private static class PostScale implements Runnable { 4106 final WebView mWebView; 4107 final boolean mUpdateTextWrap; 4108 4109 public PostScale(WebView webView, boolean updateTextWrap) { 4110 mWebView = webView; 4111 mUpdateTextWrap = updateTextWrap; 4112 } 4113 4114 public void run() { 4115 if (mWebView.mWebViewCore != null) { 4116 // we always force, in case our height changed, in which case we 4117 // still want to send the notification over to webkit. 4118 mWebView.setNewZoomScale(mWebView.mActualScale, 4119 mUpdateTextWrap, true); 4120 // update the zoom buttons as the scale can be changed 4121 if (mWebView.getSettings().getBuiltInZoomControls()) { 4122 mWebView.updateZoomButtonsEnabled(); 4123 } 4124 } 4125 } 4126 } 4127 4128 @Override 4129 protected void onSizeChanged(int w, int h, int ow, int oh) { 4130 super.onSizeChanged(w, h, ow, oh); 4131 // Center zooming to the center of the screen. 4132 if (mZoomScale == 0) { // unless we're already zooming 4133 // To anchor at top left corner. 4134 mZoomCenterX = 0; 4135 mZoomCenterY = getVisibleTitleHeight(); 4136 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4137 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4138 } 4139 4140 // adjust the max viewport width depending on the view dimensions. This 4141 // is to ensure the scaling is not going insane. So do not shrink it if 4142 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4143 int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE); 4144 if (newMaxViewportWidth > sMaxViewportWidth) { 4145 sMaxViewportWidth = newMaxViewportWidth; 4146 } 4147 4148 // update mMinZoomScale if the minimum zoom scale is not fixed 4149 if (!mMinZoomScaleFixed) { 4150 // when change from narrow screen to wide screen, the new viewWidth 4151 // can be wider than the old content width. We limit the minimum 4152 // scale to 1.0f. The proper minimum scale will be calculated when 4153 // the new picture shows up. 4154 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 4155 / (mDrawHistory ? mHistoryPicture.getWidth() 4156 : mZoomOverviewWidth)); 4157 if (mInitialScaleInPercent > 0) { 4158 // limit the minZoomScale to the initialScale if it is set 4159 float initialScale = mInitialScaleInPercent / 100.0f; 4160 if (mMinZoomScale > initialScale) { 4161 mMinZoomScale = initialScale; 4162 } 4163 } 4164 } 4165 4166 // onSizeChanged() is called during WebView layout. And any 4167 // requestLayout() is blocked during layout. As setNewZoomScale() will 4168 // call its child View to reposition itself through ViewManager's 4169 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 4170 // <b/> 4171 // only update the text wrap scale if width changed. 4172 post(new PostScale(this, w != ow)); 4173 } 4174 4175 @Override 4176 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4177 super.onScrollChanged(l, t, oldl, oldt); 4178 sendOurVisibleRect(); 4179 // update WebKit if visible title bar height changed. The logic is same 4180 // as getVisibleTitleHeight. 4181 int titleHeight = getTitleHeight(); 4182 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4183 sendViewSizeZoom(); 4184 } 4185 } 4186 4187 @Override 4188 public boolean dispatchKeyEvent(KeyEvent event) { 4189 boolean dispatch = true; 4190 4191 if (!inEditingMode()) { 4192 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4193 mGotKeyDown = true; 4194 } else { 4195 if (!mGotKeyDown) { 4196 /* 4197 * We got a key up for which we were not the recipient of 4198 * the original key down. Don't give it to the view. 4199 */ 4200 dispatch = false; 4201 } 4202 mGotKeyDown = false; 4203 } 4204 } 4205 4206 if (dispatch) { 4207 return super.dispatchKeyEvent(event); 4208 } else { 4209 // We didn't dispatch, so let something else handle the key 4210 return false; 4211 } 4212 } 4213 4214 // Here are the snap align logic: 4215 // 1. If it starts nearly horizontally or vertically, snap align; 4216 // 2. If there is a dramitic direction change, let it go; 4217 // 3. If there is a same direction back and forth, lock it. 4218 4219 // adjustable parameters 4220 private int mMinLockSnapReverseDistance; 4221 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4222 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4223 4224 private static int sign(float x) { 4225 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4226 } 4227 4228 // if the page can scroll <= this value, we won't allow the drag tracker 4229 // to have any effect. 4230 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4231 4232 private class DragTrackerHandler { 4233 private final DragTracker mProxy; 4234 private final float mStartY, mStartX; 4235 private final float mMinDY, mMinDX; 4236 private final float mMaxDY, mMaxDX; 4237 private float mCurrStretchY, mCurrStretchX; 4238 private int mSX, mSY; 4239 private Interpolator mInterp; 4240 private float[] mXY = new float[2]; 4241 4242 // inner (non-state) classes can't have enums :( 4243 private static final int DRAGGING_STATE = 0; 4244 private static final int ANIMATING_STATE = 1; 4245 private static final int FINISHED_STATE = 2; 4246 private int mState; 4247 4248 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4249 mProxy = proxy; 4250 4251 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4252 int viewTop = getScrollY(); 4253 int viewBottom = viewTop + getHeight(); 4254 4255 mStartY = y; 4256 mMinDY = -viewTop; 4257 mMaxDY = docBottom - viewBottom; 4258 4259 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4260 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4261 " up/down= " + mMinDY + " " + mMaxDY); 4262 } 4263 4264 int docRight = computeHorizontalScrollRange(); 4265 int viewLeft = getScrollX(); 4266 int viewRight = viewLeft + getWidth(); 4267 mStartX = x; 4268 mMinDX = -viewLeft; 4269 mMaxDX = docRight - viewRight; 4270 4271 mState = DRAGGING_STATE; 4272 mProxy.onStartDrag(x, y); 4273 4274 // ensure we buildBitmap at least once 4275 mSX = -99999; 4276 } 4277 4278 private float computeStretch(float delta, float min, float max) { 4279 float stretch = 0; 4280 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4281 if (delta < min) { 4282 stretch = delta - min; 4283 } else if (delta > max) { 4284 stretch = delta - max; 4285 } 4286 } 4287 return stretch; 4288 } 4289 4290 public void dragTo(float x, float y) { 4291 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4292 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4293 4294 if ((mSnapScrollMode & SNAP_X) != 0) { 4295 sy = 0; 4296 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4297 sx = 0; 4298 } 4299 4300 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4301 mCurrStretchX = sx; 4302 mCurrStretchY = sy; 4303 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4304 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4305 " " + sy); 4306 } 4307 if (mProxy.onStretchChange(sx, sy)) { 4308 invalidate(); 4309 } 4310 } 4311 } 4312 4313 public void stopDrag() { 4314 final int DURATION = 200; 4315 int now = (int)SystemClock.uptimeMillis(); 4316 mInterp = new Interpolator(2); 4317 mXY[0] = mCurrStretchX; 4318 mXY[1] = mCurrStretchY; 4319 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4320 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4321 mInterp.setKeyFrame(0, now, mXY, blend); 4322 float[] zerozero = new float[] { 0, 0 }; 4323 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4324 mState = ANIMATING_STATE; 4325 4326 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4327 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4328 } 4329 } 4330 4331 // Call this after each draw. If it ruturns null, the tracker is done 4332 public boolean isFinished() { 4333 return mState == FINISHED_STATE; 4334 } 4335 4336 private int hiddenHeightOfTitleBar() { 4337 return getTitleHeight() - getVisibleTitleHeight(); 4338 } 4339 4340 // need a way to know if 565 or 8888 is the right config for 4341 // capturing the display and giving it to the drag proxy 4342 private Bitmap.Config offscreenBitmapConfig() { 4343 // hard code 565 for now 4344 return Bitmap.Config.RGB_565; 4345 } 4346 4347 /* If the tracker draws, then this returns true, otherwise it will 4348 return false, and draw nothing. 4349 */ 4350 public boolean draw(Canvas canvas) { 4351 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4352 int sx = getScrollX(); 4353 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4354 if (mSX != sx || mSY != sy) { 4355 buildBitmap(sx, sy); 4356 mSX = sx; 4357 mSY = sy; 4358 } 4359 4360 if (mState == ANIMATING_STATE) { 4361 Interpolator.Result result = mInterp.timeToValues(mXY); 4362 if (result == Interpolator.Result.FREEZE_END) { 4363 mState = FINISHED_STATE; 4364 return false; 4365 } else { 4366 mProxy.onStretchChange(mXY[0], mXY[1]); 4367 invalidate(); 4368 // fall through to the draw 4369 } 4370 } 4371 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4372 canvas.translate(sx, sy); 4373 mProxy.onDraw(canvas); 4374 canvas.restoreToCount(count); 4375 return true; 4376 } 4377 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4378 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4379 mCurrStretchX + " " + mCurrStretchY); 4380 } 4381 return false; 4382 } 4383 4384 private void buildBitmap(int sx, int sy) { 4385 int w = getWidth(); 4386 int h = getViewHeight(); 4387 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4388 Canvas canvas = new Canvas(bm); 4389 canvas.translate(-sx, -sy); 4390 drawContent(canvas); 4391 4392 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4393 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4394 " " + sy + " " + w + " " + h); 4395 } 4396 mProxy.onBitmapChange(bm); 4397 } 4398 } 4399 4400 /** @hide */ 4401 public static class DragTracker { 4402 public void onStartDrag(float x, float y) {} 4403 public boolean onStretchChange(float sx, float sy) { 4404 // return true to have us inval the view 4405 return false; 4406 } 4407 public void onStopDrag() {} 4408 public void onBitmapChange(Bitmap bm) {} 4409 public void onDraw(Canvas canvas) {} 4410 } 4411 4412 /** @hide */ 4413 public DragTracker getDragTracker() { 4414 return mDragTracker; 4415 } 4416 4417 /** @hide */ 4418 public void setDragTracker(DragTracker tracker) { 4419 mDragTracker = tracker; 4420 } 4421 4422 private DragTracker mDragTracker; 4423 private DragTrackerHandler mDragTrackerHandler; 4424 4425 private class ScaleDetectorListener implements 4426 ScaleGestureDetector.OnScaleGestureListener { 4427 4428 public boolean onScaleBegin(ScaleGestureDetector detector) { 4429 // cancel the single touch handling 4430 cancelTouch(); 4431 if (mZoomButtonsController.isVisible()) { 4432 mZoomButtonsController.setVisible(false); 4433 } 4434 // reset the zoom overview mode so that the page won't auto grow 4435 mInZoomOverview = false; 4436 // If it is in password mode, turn it off so it does not draw 4437 // misplaced. 4438 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4439 mWebTextView.setInPassword(false); 4440 } 4441 return true; 4442 } 4443 4444 public void onScaleEnd(ScaleGestureDetector detector) { 4445 if (mPreviewZoomOnly) { 4446 mPreviewZoomOnly = false; 4447 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4448 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4449 // don't reflow when zoom in; when zoom out, do reflow if the 4450 // new scale is almost minimum scale; 4451 boolean reflowNow = (mActualScale - mMinZoomScale <= 0.01f) 4452 || ((mActualScale <= 0.8 * mTextWrapScale)); 4453 // force zoom after mPreviewZoomOnly is set to false so that the 4454 // new view size will be passed to the WebKit 4455 setNewZoomScale(mActualScale, reflowNow, true); 4456 // call invalidate() to draw without zoom filter 4457 invalidate(); 4458 } 4459 // adjust the edit text view if needed 4460 if (inEditingMode() && didUpdateTextViewBounds(false) 4461 && nativeFocusCandidateIsPassword()) { 4462 // If it is a password field, start drawing the 4463 // WebTextView once again. 4464 mWebTextView.setInPassword(true); 4465 } 4466 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4467 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4468 // may trigger the unwanted fling. 4469 mTouchMode = TOUCH_PINCH_DRAG; 4470 startTouch(detector.getFocusX(), detector.getFocusY(), 4471 mLastTouchTime); 4472 } 4473 4474 public boolean onScale(ScaleGestureDetector detector) { 4475 float scale = (float) (Math.round(detector.getScaleFactor() 4476 * mActualScale * 100) / 100.0); 4477 if (Math.abs(scale - mActualScale) >= PREVIEW_SCALE_INCREMENT) { 4478 mPreviewZoomOnly = true; 4479 // limit the scale change per step 4480 if (scale > mActualScale) { 4481 scale = Math.min(scale, mActualScale * 1.25f); 4482 } else { 4483 scale = Math.max(scale, mActualScale * 0.8f); 4484 } 4485 mZoomCenterX = detector.getFocusX(); 4486 mZoomCenterY = detector.getFocusY(); 4487 setNewZoomScale(scale, false, false); 4488 invalidate(); 4489 return true; 4490 } 4491 return false; 4492 } 4493 } 4494 4495 @Override 4496 public boolean onTouchEvent(MotionEvent ev) { 4497 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4498 return false; 4499 } 4500 4501 if (DebugFlags.WEB_VIEW) { 4502 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4503 + mTouchMode); 4504 } 4505 4506 int action; 4507 float x, y; 4508 long eventTime = ev.getEventTime(); 4509 4510 // FIXME: we may consider to give WebKit an option to handle multi-touch 4511 // events later. 4512 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 4513 if (mMinZoomScale < mMaxZoomScale) { 4514 mScaleDetector.onTouchEvent(ev); 4515 if (mScaleDetector.isInProgress()) { 4516 mLastTouchTime = eventTime; 4517 return true; 4518 } 4519 x = mScaleDetector.getFocusX(); 4520 y = mScaleDetector.getFocusY(); 4521 action = ev.getAction() & MotionEvent.ACTION_MASK; 4522 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4523 cancelTouch(); 4524 action = MotionEvent.ACTION_DOWN; 4525 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4526 // set mLastTouchX/Y to the remaining point 4527 mLastTouchX = x; 4528 mLastTouchY = y; 4529 } else if (action == MotionEvent.ACTION_MOVE) { 4530 // negative x or y indicate it is on the edge, skip it. 4531 if (x < 0 || y < 0) { 4532 return true; 4533 } 4534 } 4535 } else { 4536 // if the page disallow zoom, skip multi-pointer action 4537 return true; 4538 } 4539 } else { 4540 action = ev.getAction(); 4541 x = ev.getX(); 4542 y = ev.getY(); 4543 } 4544 4545 // Due to the touch screen edge effect, a touch closer to the edge 4546 // always snapped to the edge. As getViewWidth() can be different from 4547 // getWidth() due to the scrollbar, adjusting the point to match 4548 // getViewWidth(). Same applied to the height. 4549 if (x > getViewWidth() - 1) { 4550 x = getViewWidth() - 1; 4551 } 4552 if (y > getViewHeightWithTitle() - 1) { 4553 y = getViewHeightWithTitle() - 1; 4554 } 4555 4556 // pass the touch events, except ACTION_MOVE which will be handled 4557 // later, from UI thread to WebCore thread 4558 if (mFullScreenHolder != null || (mForwardTouchEvents 4559 && action != MotionEvent.ACTION_MOVE 4560 && (action == MotionEvent.ACTION_DOWN || mPreventDrag 4561 != PREVENT_DRAG_CANCEL))) { 4562 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 4563 ted.mAction = action; 4564 ted.mX = viewToContentX((int) x + mScrollX); 4565 ted.mY = viewToContentY((int) y + mScrollY); 4566 ted.mEventTime = eventTime; 4567 ted.mMetaState = ev.getMetaState(); 4568 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4569 mLastSentTouchTime = eventTime; 4570 } 4571 4572 float fDeltaX = mLastTouchX - x; 4573 float fDeltaY = mLastTouchY - y; 4574 int deltaX = (int) fDeltaX; 4575 int deltaY = (int) fDeltaY; 4576 4577 switch (action) { 4578 case MotionEvent.ACTION_DOWN: { 4579 mPreventDrag = PREVENT_DRAG_NO; 4580 if (!mScroller.isFinished()) { 4581 // stop the current scroll animation, but if this is 4582 // the start of a fling, allow it to add to the current 4583 // fling's velocity 4584 mScroller.abortAnimation(); 4585 mTouchMode = TOUCH_DRAG_START_MODE; 4586 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 4587 } else if (mShiftIsPressed) { 4588 mSelectX = mScrollX + (int) x; 4589 mSelectY = mScrollY + (int) y; 4590 mTouchMode = TOUCH_SELECT_MODE; 4591 if (DebugFlags.WEB_VIEW) { 4592 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 4593 } 4594 nativeMoveSelection(viewToContentX(mSelectX), 4595 viewToContentY(mSelectY), false); 4596 mTouchSelection = mExtendSelection = true; 4597 invalidate(); // draw the i-beam instead of the arrow 4598 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4599 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4600 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4601 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4602 } else { 4603 // commit the short press action for the previous tap 4604 doShortPress(); 4605 // continue, mTouchMode should be still TOUCH_INIT_MODE 4606 } 4607 } else { 4608 mPreviewZoomOnly = false; 4609 mTouchMode = TOUCH_INIT_MODE; 4610 mPreventDrag = mForwardTouchEvents ? PREVENT_DRAG_MAYBE_YES 4611 : PREVENT_DRAG_NO; 4612 mPreventLongPress = false; 4613 mPreventDoubleTap = false; 4614 mWebViewCore.sendMessage( 4615 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4616 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4617 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 4618 (eventTime - mLastTouchUpTime), eventTime); 4619 } 4620 } 4621 // Trigger the link 4622 if (mTouchMode == TOUCH_INIT_MODE 4623 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4624 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4625 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 4626 } 4627 startTouch(x, y, eventTime); 4628 break; 4629 } 4630 case MotionEvent.ACTION_MOVE: { 4631 if (mTouchMode == TOUCH_DONE_MODE) { 4632 // no dragging during scroll zoom animation 4633 break; 4634 } 4635 mVelocityTracker.addMovement(ev); 4636 4637 if (mTouchMode != TOUCH_DRAG_MODE) { 4638 if (mTouchMode == TOUCH_SELECT_MODE) { 4639 mSelectX = mScrollX + (int) x; 4640 mSelectY = mScrollY + (int) y; 4641 if (DebugFlags.WEB_VIEW) { 4642 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 4643 } 4644 nativeMoveSelection(viewToContentX(mSelectX), 4645 viewToContentY(mSelectY), true); 4646 invalidate(); 4647 break; 4648 } 4649 if ((deltaX * deltaX + deltaY * deltaY) < mTouchSlopSquare) { 4650 break; 4651 } 4652 4653 // pass the first ACTION_MOVE from UI thread to WebCore 4654 // thread after the distance is confirmed that it is a drag 4655 if (mFullScreenHolder == null && mForwardTouchEvents 4656 && mPreventDrag != PREVENT_DRAG_CANCEL) { 4657 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 4658 ted.mAction = action; 4659 ted.mX = viewToContentX((int) x + mScrollX); 4660 ted.mY = viewToContentY((int) y + mScrollY); 4661 ted.mEventTime = eventTime; 4662 ted.mMetaState = ev.getMetaState(); 4663 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4664 mLastSentTouchTime = eventTime; 4665 } 4666 4667 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 4668 // track mLastTouchTime as we may need to do fling at 4669 // ACTION_UP 4670 mLastTouchTime = eventTime; 4671 break; 4672 } 4673 if (mTouchMode == TOUCH_SHORTPRESS_MODE 4674 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4675 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4676 } else if (mTouchMode == TOUCH_INIT_MODE 4677 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4678 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4679 } 4680 if (mFullScreenHolder != null) { 4681 // in full screen mode, the WebView can't be panned. 4682 mTouchMode = TOUCH_DONE_MODE; 4683 break; 4684 } 4685 4686 // if it starts nearly horizontal or vertical, enforce it 4687 int ax = Math.abs(deltaX); 4688 int ay = Math.abs(deltaY); 4689 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4690 mSnapScrollMode = SNAP_X; 4691 mSnapPositive = deltaX > 0; 4692 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4693 mSnapScrollMode = SNAP_Y; 4694 mSnapPositive = deltaY > 0; 4695 } 4696 4697 mTouchMode = TOUCH_DRAG_MODE; 4698 mLastTouchX = x; 4699 mLastTouchY = y; 4700 fDeltaX = 0.0f; 4701 fDeltaY = 0.0f; 4702 deltaX = 0; 4703 deltaY = 0; 4704 4705 WebViewCore.reducePriority(); 4706 if (!mDragFromTextInput) { 4707 nativeHideCursor(); 4708 } 4709 WebSettings settings = getSettings(); 4710 if (settings.supportZoom() 4711 && settings.getBuiltInZoomControls() 4712 && !mZoomButtonsController.isVisible() 4713 && mMinZoomScale < mMaxZoomScale) { 4714 mZoomButtonsController.setVisible(true); 4715 int count = settings.getDoubleTapToastCount(); 4716 if (mInZoomOverview && count > 0) { 4717 settings.setDoubleTapToastCount(--count); 4718 Toast.makeText(mContext, 4719 com.android.internal.R.string.double_tap_toast, 4720 Toast.LENGTH_LONG).show(); 4721 } 4722 } 4723 } else { 4724 // pass the touch events from UI thread to WebCore thread 4725 if (mFullScreenHolder == null && mForwardTouchEvents 4726 && eventTime - mLastSentTouchTime > mCurrentTouchInterval 4727 && mPreventDrag != PREVENT_DRAG_CANCEL) { 4728 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 4729 ted.mAction = action; 4730 ted.mX = viewToContentX((int) x + mScrollX); 4731 ted.mY = viewToContentY((int) y + mScrollY); 4732 ted.mEventTime = eventTime; 4733 ted.mMetaState = ev.getMetaState(); 4734 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4735 mLastSentTouchTime = eventTime; 4736 } 4737 } 4738 4739 // do pan 4740 boolean done = false; 4741 boolean keepScrollBarsVisible = false; 4742 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 4743 keepScrollBarsVisible = done = true; 4744 } else { 4745 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4746 int ax = Math.abs(deltaX); 4747 int ay = Math.abs(deltaY); 4748 if (mSnapScrollMode == SNAP_X) { 4749 // radical change means getting out of snap mode 4750 if (ay > MAX_SLOPE_FOR_DIAG * ax 4751 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4752 mSnapScrollMode = SNAP_NONE; 4753 } 4754 // reverse direction means lock in the snap mode 4755 if (ax > MAX_SLOPE_FOR_DIAG * ay && 4756 (mSnapPositive 4757 ? deltaX < -mMinLockSnapReverseDistance 4758 : deltaX > mMinLockSnapReverseDistance)) { 4759 mSnapScrollMode |= SNAP_LOCK; 4760 } 4761 } else { 4762 // radical change means getting out of snap mode 4763 if (ax > MAX_SLOPE_FOR_DIAG * ay 4764 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4765 mSnapScrollMode = SNAP_NONE; 4766 } 4767 // reverse direction means lock in the snap mode 4768 if (ay > MAX_SLOPE_FOR_DIAG * ax && 4769 (mSnapPositive 4770 ? deltaY < -mMinLockSnapReverseDistance 4771 : deltaY > mMinLockSnapReverseDistance)) { 4772 mSnapScrollMode |= SNAP_LOCK; 4773 } 4774 } 4775 } 4776 if (mSnapScrollMode != SNAP_NONE) { 4777 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 4778 deltaY = 0; 4779 } else { 4780 deltaX = 0; 4781 } 4782 } 4783 if ((deltaX | deltaY) != 0) { 4784 overscrollBy(deltaX, deltaY, mScrollX, mScrollY, 4785 computeMaxScrollX(), computeMaxScrollY(), 4786 getViewWidth() / 3, getViewHeight() / 3); 4787 if (deltaX != 0) { 4788 mLastTouchX = x; 4789 } 4790 if (deltaY != 0) { 4791 mLastTouchY = y; 4792 } 4793 mHeldMotionless = MOTIONLESS_FALSE; 4794 } else { 4795 // keep the scrollbar on the screen even there is no 4796 // scroll 4797 keepScrollBarsVisible = true; 4798 } 4799 mLastTouchTime = eventTime; 4800 mUserScroll = true; 4801 } 4802 4803 if (!getSettings().getBuiltInZoomControls()) { 4804 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 4805 if (mZoomControls != null && showPlusMinus) { 4806 if (mZoomControls.getVisibility() == View.VISIBLE) { 4807 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4808 } else { 4809 mZoomControls.show(showPlusMinus, false); 4810 } 4811 mPrivateHandler.postDelayed(mZoomControlRunnable, 4812 ZOOM_CONTROLS_TIMEOUT); 4813 } 4814 } 4815 4816 if (mDragTrackerHandler != null) { 4817 mDragTrackerHandler.dragTo(x, y); 4818 } 4819 4820 if (keepScrollBarsVisible) { 4821 if (mHeldMotionless != MOTIONLESS_TRUE) { 4822 mHeldMotionless = MOTIONLESS_TRUE; 4823 invalidate(); 4824 } 4825 // keep the scrollbar on the screen even there is no scroll 4826 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 4827 false); 4828 // return false to indicate that we can't pan out of the 4829 // view space 4830 return !done; 4831 } 4832 break; 4833 } 4834 case MotionEvent.ACTION_UP: { 4835 if (mDragTrackerHandler != null) { 4836 mDragTrackerHandler.stopDrag(); 4837 } 4838 mLastTouchUpTime = eventTime; 4839 switch (mTouchMode) { 4840 case TOUCH_DOUBLE_TAP_MODE: // double tap 4841 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4842 mTouchMode = TOUCH_DONE_MODE; 4843 if (mPreventDoubleTap) { 4844 WebViewCore.TouchEventData ted 4845 = new WebViewCore.TouchEventData(); 4846 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 4847 ted.mX = viewToContentX((int) x + mScrollX); 4848 ted.mY = viewToContentY((int) y + mScrollY); 4849 ted.mEventTime = eventTime; 4850 ted.mMetaState = ev.getMetaState(); 4851 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4852 } else if (mFullScreenHolder == null) { 4853 doDoubleTap(); 4854 } 4855 break; 4856 case TOUCH_SELECT_MODE: 4857 commitCopy(); 4858 mTouchSelection = false; 4859 break; 4860 case TOUCH_INIT_MODE: // tap 4861 case TOUCH_SHORTPRESS_START_MODE: 4862 case TOUCH_SHORTPRESS_MODE: 4863 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4864 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4865 if ((deltaX * deltaX + deltaY * deltaY) > mTouchSlopSquare) { 4866 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 4867 " WebCore's response for touch down."); 4868 if (mFullScreenHolder == null 4869 && (computeMaxScrollX() > 0 4870 || computeMaxScrollY() > 0)) { 4871 // remove the pending TOUCH_EVENT and send a 4872 // cancel 4873 mWebViewCore 4874 .removeMessages(EventHub.TOUCH_EVENT); 4875 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 4876 ted.mAction = MotionEvent.ACTION_CANCEL; 4877 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, 4878 ted); 4879 // we will not rewrite drag code here, but we 4880 // will try fling if it applies. 4881 WebViewCore.reducePriority(); 4882 // fall through to TOUCH_DRAG_MODE 4883 } else { 4884 break; 4885 } 4886 } else { 4887 // mPreventDrag can be PREVENT_DRAG_MAYBE_YES in 4888 // TOUCH_INIT_MODE. To give WebCoreThread a little 4889 // more time to send PREVENT_TOUCH_ID, we check 4890 // again in responding RELEASE_SINGLE_TAP. 4891 if (mPreventDrag != PREVENT_DRAG_YES) { 4892 if (mTouchMode == TOUCH_INIT_MODE) { 4893 mPrivateHandler.sendMessageDelayed( 4894 mPrivateHandler.obtainMessage( 4895 RELEASE_SINGLE_TAP), 4896 ViewConfiguration.getDoubleTapTimeout()); 4897 } else { 4898 mTouchMode = TOUCH_DONE_MODE; 4899 doShortPress(); 4900 } 4901 } 4902 break; 4903 } 4904 case TOUCH_DRAG_MODE: 4905 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4906 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4907 mHeldMotionless = MOTIONLESS_TRUE; 4908 // redraw in high-quality, as we're done dragging 4909 invalidate(); 4910 // if the user waits a while w/o moving before the 4911 // up, we don't want to do a fling 4912 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4913 mVelocityTracker.addMovement(ev); 4914 doFling(); 4915 break; 4916 } else { 4917 if (mScroller.springback(mScrollX, mScrollY, 0, 4918 computeMaxScrollX(), 0, 4919 computeMaxScrollY())) { 4920 invalidate(); 4921 } 4922 } 4923 mLastVelocity = 0; 4924 WebViewCore.resumePriority(); 4925 break; 4926 case TOUCH_DRAG_START_MODE: 4927 case TOUCH_DONE_MODE: 4928 // do nothing 4929 break; 4930 } 4931 // we also use mVelocityTracker == null to tell us that we are 4932 // not "moving around", so we can take the slower/prettier 4933 // mode in the drawing code 4934 if (mVelocityTracker != null) { 4935 mVelocityTracker.recycle(); 4936 mVelocityTracker = null; 4937 } 4938 break; 4939 } 4940 case MotionEvent.ACTION_CANCEL: { 4941 cancelTouch(); 4942 if (mTouchMode == TOUCH_DRAG_MODE) { 4943 if (mScroller.springback(mScrollX, mScrollY, 0, 4944 computeMaxScrollX(), 0, computeMaxScrollY())) { 4945 invalidate(); 4946 } 4947 } 4948 break; 4949 } 4950 } 4951 return true; 4952 } 4953 4954 private void startTouch(float x, float y, long eventTime) { 4955 // Remember where the motion event started 4956 mLastTouchX = x; 4957 mLastTouchY = y; 4958 mLastTouchTime = eventTime; 4959 mVelocityTracker = VelocityTracker.obtain(); 4960 mSnapScrollMode = SNAP_NONE; 4961 if (mDragTracker != null) { 4962 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 4963 } 4964 } 4965 4966 private void cancelTouch() { 4967 if (mDragTrackerHandler != null) { 4968 mDragTrackerHandler.stopDrag(); 4969 } 4970 // we also use mVelocityTracker == null to tell us that we are 4971 // not "moving around", so we can take the slower/prettier 4972 // mode in the drawing code 4973 if (mVelocityTracker != null) { 4974 mVelocityTracker.recycle(); 4975 mVelocityTracker = null; 4976 } 4977 if (mTouchMode == TOUCH_DRAG_MODE) { 4978 WebViewCore.resumePriority(); 4979 } 4980 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4981 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4982 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4983 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4984 mHeldMotionless = MOTIONLESS_TRUE; 4985 mTouchMode = TOUCH_DONE_MODE; 4986 nativeHideCursor(); 4987 } 4988 4989 private long mTrackballFirstTime = 0; 4990 private long mTrackballLastTime = 0; 4991 private float mTrackballRemainsX = 0.0f; 4992 private float mTrackballRemainsY = 0.0f; 4993 private int mTrackballXMove = 0; 4994 private int mTrackballYMove = 0; 4995 private boolean mExtendSelection = false; 4996 private boolean mTouchSelection = false; 4997 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4998 private static final int TRACKBALL_TIMEOUT = 200; 4999 private static final int TRACKBALL_WAIT = 100; 5000 private static final int TRACKBALL_SCALE = 400; 5001 private static final int TRACKBALL_SCROLL_COUNT = 5; 5002 private static final int TRACKBALL_MOVE_COUNT = 10; 5003 private static final int TRACKBALL_MULTIPLIER = 3; 5004 private static final int SELECT_CURSOR_OFFSET = 16; 5005 private int mSelectX = 0; 5006 private int mSelectY = 0; 5007 private boolean mFocusSizeChanged = false; 5008 private boolean mShiftIsPressed = false; 5009 private boolean mTrackballDown = false; 5010 private long mTrackballUpTime = 0; 5011 private long mLastCursorTime = 0; 5012 private Rect mLastCursorBounds; 5013 5014 // Set by default; BrowserActivity clears to interpret trackball data 5015 // directly for movement. Currently, the framework only passes 5016 // arrow key events, not trackball events, from one child to the next 5017 private boolean mMapTrackballToArrowKeys = true; 5018 5019 public void setMapTrackballToArrowKeys(boolean setMap) { 5020 mMapTrackballToArrowKeys = setMap; 5021 } 5022 5023 void resetTrackballTime() { 5024 mTrackballLastTime = 0; 5025 } 5026 5027 @Override 5028 public boolean onTrackballEvent(MotionEvent ev) { 5029 long time = ev.getEventTime(); 5030 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5031 if (ev.getY() > 0) pageDown(true); 5032 if (ev.getY() < 0) pageUp(true); 5033 return true; 5034 } 5035 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5036 if (mShiftIsPressed) { 5037 return true; // discard press if copy in progress 5038 } 5039 mTrackballDown = true; 5040 if (mNativeClass == 0) { 5041 return false; 5042 } 5043 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5044 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5045 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5046 nativeSelectBestAt(mLastCursorBounds); 5047 } 5048 if (DebugFlags.WEB_VIEW) { 5049 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5050 + " time=" + time 5051 + " mLastCursorTime=" + mLastCursorTime); 5052 } 5053 if (isInTouchMode()) requestFocusFromTouch(); 5054 return false; // let common code in onKeyDown at it 5055 } 5056 if (ev.getAction() == MotionEvent.ACTION_UP) { 5057 // LONG_PRESS_CENTER is set in common onKeyDown 5058 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5059 mTrackballDown = false; 5060 mTrackballUpTime = time; 5061 if (mShiftIsPressed) { 5062 if (mExtendSelection) { 5063 commitCopy(); 5064 } else { 5065 mExtendSelection = true; 5066 invalidate(); // draw the i-beam instead of the arrow 5067 } 5068 return true; // discard press if copy in progress 5069 } 5070 if (DebugFlags.WEB_VIEW) { 5071 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5072 + " time=" + time 5073 ); 5074 } 5075 return false; // let common code in onKeyUp at it 5076 } 5077 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 5078 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5079 return false; 5080 } 5081 if (mTrackballDown) { 5082 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5083 return true; // discard move if trackball is down 5084 } 5085 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5086 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5087 return true; 5088 } 5089 // TODO: alternatively we can do panning as touch does 5090 switchOutDrawHistory(); 5091 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5092 if (DebugFlags.WEB_VIEW) { 5093 Log.v(LOGTAG, "onTrackballEvent time=" 5094 + time + " last=" + mTrackballLastTime); 5095 } 5096 mTrackballFirstTime = time; 5097 mTrackballXMove = mTrackballYMove = 0; 5098 } 5099 mTrackballLastTime = time; 5100 if (DebugFlags.WEB_VIEW) { 5101 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5102 } 5103 mTrackballRemainsX += ev.getX(); 5104 mTrackballRemainsY += ev.getY(); 5105 doTrackball(time); 5106 return true; 5107 } 5108 5109 void moveSelection(float xRate, float yRate) { 5110 if (mNativeClass == 0) 5111 return; 5112 int width = getViewWidth(); 5113 int height = getViewHeight(); 5114 mSelectX += xRate; 5115 mSelectY += yRate; 5116 int maxX = width + mScrollX; 5117 int maxY = height + mScrollY; 5118 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5119 , mSelectX)); 5120 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5121 , mSelectY)); 5122 if (DebugFlags.WEB_VIEW) { 5123 Log.v(LOGTAG, "moveSelection" 5124 + " mSelectX=" + mSelectX 5125 + " mSelectY=" + mSelectY 5126 + " mScrollX=" + mScrollX 5127 + " mScrollY=" + mScrollY 5128 + " xRate=" + xRate 5129 + " yRate=" + yRate 5130 ); 5131 } 5132 nativeMoveSelection(viewToContentX(mSelectX), 5133 viewToContentY(mSelectY), mExtendSelection); 5134 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5135 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5136 : 0; 5137 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5138 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5139 : 0; 5140 pinScrollBy(scrollX, scrollY, true, 0); 5141 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5142 requestRectangleOnScreen(select); 5143 invalidate(); 5144 } 5145 5146 private int scaleTrackballX(float xRate, int width) { 5147 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5148 int nextXMove = xMove; 5149 if (xMove > 0) { 5150 if (xMove > mTrackballXMove) { 5151 xMove -= mTrackballXMove; 5152 } 5153 } else if (xMove < mTrackballXMove) { 5154 xMove -= mTrackballXMove; 5155 } 5156 mTrackballXMove = nextXMove; 5157 return xMove; 5158 } 5159 5160 private int scaleTrackballY(float yRate, int height) { 5161 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5162 int nextYMove = yMove; 5163 if (yMove > 0) { 5164 if (yMove > mTrackballYMove) { 5165 yMove -= mTrackballYMove; 5166 } 5167 } else if (yMove < mTrackballYMove) { 5168 yMove -= mTrackballYMove; 5169 } 5170 mTrackballYMove = nextYMove; 5171 return yMove; 5172 } 5173 5174 private int keyCodeToSoundsEffect(int keyCode) { 5175 switch(keyCode) { 5176 case KeyEvent.KEYCODE_DPAD_UP: 5177 return SoundEffectConstants.NAVIGATION_UP; 5178 case KeyEvent.KEYCODE_DPAD_RIGHT: 5179 return SoundEffectConstants.NAVIGATION_RIGHT; 5180 case KeyEvent.KEYCODE_DPAD_DOWN: 5181 return SoundEffectConstants.NAVIGATION_DOWN; 5182 case KeyEvent.KEYCODE_DPAD_LEFT: 5183 return SoundEffectConstants.NAVIGATION_LEFT; 5184 } 5185 throw new IllegalArgumentException("keyCode must be one of " + 5186 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5187 "KEYCODE_DPAD_LEFT}."); 5188 } 5189 5190 private void doTrackball(long time) { 5191 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5192 if (elapsed == 0) { 5193 elapsed = TRACKBALL_TIMEOUT; 5194 } 5195 float xRate = mTrackballRemainsX * 1000 / elapsed; 5196 float yRate = mTrackballRemainsY * 1000 / elapsed; 5197 int viewWidth = getViewWidth(); 5198 int viewHeight = getViewHeight(); 5199 if (mShiftIsPressed) { 5200 moveSelection(scaleTrackballX(xRate, viewWidth), 5201 scaleTrackballY(yRate, viewHeight)); 5202 mTrackballRemainsX = mTrackballRemainsY = 0; 5203 return; 5204 } 5205 float ax = Math.abs(xRate); 5206 float ay = Math.abs(yRate); 5207 float maxA = Math.max(ax, ay); 5208 if (DebugFlags.WEB_VIEW) { 5209 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5210 + " xRate=" + xRate 5211 + " yRate=" + yRate 5212 + " mTrackballRemainsX=" + mTrackballRemainsX 5213 + " mTrackballRemainsY=" + mTrackballRemainsY); 5214 } 5215 int width = mContentWidth - viewWidth; 5216 int height = mContentHeight - viewHeight; 5217 if (width < 0) width = 0; 5218 if (height < 0) height = 0; 5219 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5220 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5221 maxA = Math.max(ax, ay); 5222 int count = Math.max(0, (int) maxA); 5223 int oldScrollX = mScrollX; 5224 int oldScrollY = mScrollY; 5225 if (count > 0) { 5226 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5227 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5228 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5229 KeyEvent.KEYCODE_DPAD_RIGHT; 5230 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5231 if (DebugFlags.WEB_VIEW) { 5232 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5233 + " count=" + count 5234 + " mTrackballRemainsX=" + mTrackballRemainsX 5235 + " mTrackballRemainsY=" + mTrackballRemainsY); 5236 } 5237 if (navHandledKey(selectKeyCode, count, false, time, false)) { 5238 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5239 } 5240 mTrackballRemainsX = mTrackballRemainsY = 0; 5241 } 5242 if (count >= TRACKBALL_SCROLL_COUNT) { 5243 int xMove = scaleTrackballX(xRate, width); 5244 int yMove = scaleTrackballY(yRate, height); 5245 if (DebugFlags.WEB_VIEW) { 5246 Log.v(LOGTAG, "doTrackball pinScrollBy" 5247 + " count=" + count 5248 + " xMove=" + xMove + " yMove=" + yMove 5249 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5250 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5251 ); 5252 } 5253 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5254 xMove = 0; 5255 } 5256 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5257 yMove = 0; 5258 } 5259 if (xMove != 0 || yMove != 0) { 5260 pinScrollBy(xMove, yMove, true, 0); 5261 } 5262 mUserScroll = true; 5263 } 5264 } 5265 5266 private int computeMaxScrollX() { 5267 return Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5268 } 5269 5270 private int computeMaxScrollY() { 5271 return Math.max(computeVerticalScrollRange() + getTitleHeight() 5272 - getViewHeightWithTitle(), getTitleHeight()); 5273 } 5274 5275 public void flingScroll(int vx, int vy) { 5276 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 5277 computeMaxScrollY(), getViewWidth() / 3, getViewHeight() / 3); 5278 invalidate(); 5279 } 5280 5281 private void doFling() { 5282 if (mVelocityTracker == null) { 5283 return; 5284 } 5285 int maxX = computeMaxScrollX(); 5286 int maxY = computeMaxScrollY(); 5287 5288 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5289 int vx = (int) mVelocityTracker.getXVelocity(); 5290 int vy = (int) mVelocityTracker.getYVelocity(); 5291 5292 if (mSnapScrollMode != SNAP_NONE) { 5293 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5294 vy = 0; 5295 } else { 5296 vx = 0; 5297 } 5298 } 5299 5300 if (true /* EMG release: make our fling more like Maps' */) { 5301 // maps cuts their velocity in half 5302 vx = vx * 3 / 4; 5303 vy = vy * 3 / 4; 5304 } 5305 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5306 WebViewCore.resumePriority(); 5307 if (mScroller.springback(mScrollX, mScrollY, 0, computeMaxScrollX(), 5308 0, computeMaxScrollY())) { 5309 invalidate(); 5310 } 5311 return; 5312 } 5313 float currentVelocity = mScroller.getCurrVelocity(); 5314 if (mLastVelocity > 0 && currentVelocity > 0) { 5315 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5316 - Math.atan2(vy, vx))); 5317 final float circle = (float) (Math.PI) * 2.0f; 5318 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5319 vx += currentVelocity * mLastVelX / mLastVelocity; 5320 vy += currentVelocity * mLastVelY / mLastVelocity; 5321 if (DebugFlags.WEB_VIEW) { 5322 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5323 } 5324 } else if (DebugFlags.WEB_VIEW) { 5325 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5326 } 5327 } else if (DebugFlags.WEB_VIEW) { 5328 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5329 + " current=" + currentVelocity 5330 + " vx=" + vx + " vy=" + vy 5331 + " maxX=" + maxX + " maxY=" + maxY 5332 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5333 } 5334 mLastVelX = vx; 5335 mLastVelY = vy; 5336 mLastVelocity = (float) Math.hypot(vx, vy); 5337 5338 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY, 5339 getViewWidth() / 3, getViewHeight() / 3); 5340 // TODO: duration is calculated based on velocity, if the range is 5341 // small, the animation will stop before duration is up. We may 5342 // want to calculate how long the animation is going to run to precisely 5343 // resume the webcore update. 5344 final int time = mScroller.getDuration(); 5345 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5346 awakenScrollBars(time); 5347 invalidate(); 5348 } 5349 5350 private boolean zoomWithPreview(float scale) { 5351 float oldScale = mActualScale; 5352 mInitialScrollX = mScrollX; 5353 mInitialScrollY = mScrollY; 5354 5355 // snap to DEFAULT_SCALE if it is close 5356 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 5357 scale = mDefaultScale; 5358 } 5359 5360 setNewZoomScale(scale, true, false); 5361 5362 if (oldScale != mActualScale) { 5363 // use mZoomPickerScale to see zoom preview first 5364 mZoomStart = SystemClock.uptimeMillis(); 5365 mInvInitialZoomScale = 1.0f / oldScale; 5366 mInvFinalZoomScale = 1.0f / mActualScale; 5367 mZoomScale = mActualScale; 5368 WebViewCore.pauseUpdatePicture(mWebViewCore); 5369 invalidate(); 5370 return true; 5371 } else { 5372 return false; 5373 } 5374 } 5375 5376 /** 5377 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5378 * in charge of installing this view to the view hierarchy. This view will 5379 * become visible when the user starts scrolling via touch and fade away if 5380 * the user does not interact with it. 5381 * <p/> 5382 * API version 3 introduces a built-in zoom mechanism that is shown 5383 * automatically by the MapView. This is the preferred approach for 5384 * showing the zoom UI. 5385 * 5386 * @deprecated The built-in zoom mechanism is preferred, see 5387 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5388 */ 5389 @Deprecated 5390 public View getZoomControls() { 5391 if (!getSettings().supportZoom()) { 5392 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5393 return null; 5394 } 5395 if (mZoomControls == null) { 5396 mZoomControls = createZoomControls(); 5397 5398 /* 5399 * need to be set to VISIBLE first so that getMeasuredHeight() in 5400 * {@link #onSizeChanged()} can return the measured value for proper 5401 * layout. 5402 */ 5403 mZoomControls.setVisibility(View.VISIBLE); 5404 mZoomControlRunnable = new Runnable() { 5405 public void run() { 5406 5407 /* Don't dismiss the controls if the user has 5408 * focus on them. Wait and check again later. 5409 */ 5410 if (!mZoomControls.hasFocus()) { 5411 mZoomControls.hide(); 5412 } else { 5413 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5414 mPrivateHandler.postDelayed(mZoomControlRunnable, 5415 ZOOM_CONTROLS_TIMEOUT); 5416 } 5417 } 5418 }; 5419 } 5420 return mZoomControls; 5421 } 5422 5423 private ExtendedZoomControls createZoomControls() { 5424 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 5425 , null); 5426 zoomControls.setOnZoomInClickListener(new OnClickListener() { 5427 public void onClick(View v) { 5428 // reset time out 5429 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5430 mPrivateHandler.postDelayed(mZoomControlRunnable, 5431 ZOOM_CONTROLS_TIMEOUT); 5432 zoomIn(); 5433 } 5434 }); 5435 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 5436 public void onClick(View v) { 5437 // reset time out 5438 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5439 mPrivateHandler.postDelayed(mZoomControlRunnable, 5440 ZOOM_CONTROLS_TIMEOUT); 5441 zoomOut(); 5442 } 5443 }); 5444 return zoomControls; 5445 } 5446 5447 /** 5448 * Gets the {@link ZoomButtonsController} which can be used to add 5449 * additional buttons to the zoom controls window. 5450 * 5451 * @return The instance of {@link ZoomButtonsController} used by this class, 5452 * or null if it is unavailable. 5453 * @hide 5454 */ 5455 public ZoomButtonsController getZoomButtonsController() { 5456 return mZoomButtonsController; 5457 } 5458 5459 /** 5460 * Perform zoom in in the webview 5461 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 5462 */ 5463 public boolean zoomIn() { 5464 // TODO: alternatively we can disallow this during draw history mode 5465 switchOutDrawHistory(); 5466 mInZoomOverview = false; 5467 // Center zooming to the center of the screen. 5468 mZoomCenterX = getViewWidth() * .5f; 5469 mZoomCenterY = getViewHeight() * .5f; 5470 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5471 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5472 return zoomWithPreview(mActualScale * 1.25f); 5473 } 5474 5475 /** 5476 * Perform zoom out in the webview 5477 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 5478 */ 5479 public boolean zoomOut() { 5480 // TODO: alternatively we can disallow this during draw history mode 5481 switchOutDrawHistory(); 5482 // Center zooming to the center of the screen. 5483 mZoomCenterX = getViewWidth() * .5f; 5484 mZoomCenterY = getViewHeight() * .5f; 5485 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5486 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5487 return zoomWithPreview(mActualScale * 0.8f); 5488 } 5489 5490 private void updateSelection() { 5491 if (mNativeClass == 0) { 5492 return; 5493 } 5494 // mLastTouchX and mLastTouchY are the point in the current viewport 5495 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5496 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5497 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 5498 contentX + mNavSlop, contentY + mNavSlop); 5499 nativeSelectBestAt(rect); 5500 } 5501 5502 /** 5503 * Scroll the focused text field/area to match the WebTextView 5504 * @param xPercent New x position of the WebTextView from 0 to 1. 5505 * @param y New y position of the WebTextView in view coordinates 5506 */ 5507 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 5508 if (!inEditingMode() || mWebViewCore == null) { 5509 return; 5510 } 5511 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 5512 // Since this position is relative to the top of the text input 5513 // field, we do not need to take the title bar's height into 5514 // consideration. 5515 viewToContentDimension(y), 5516 new Float(xPercent)); 5517 } 5518 5519 /** 5520 * Set our starting point and time for a drag from the WebTextView. 5521 */ 5522 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 5523 if (!inEditingMode()) { 5524 return; 5525 } 5526 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 5527 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 5528 mLastTouchTime = eventTime; 5529 if (!mScroller.isFinished()) { 5530 abortAnimation(); 5531 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5532 } 5533 mSnapScrollMode = SNAP_NONE; 5534 mVelocityTracker = VelocityTracker.obtain(); 5535 mTouchMode = TOUCH_DRAG_START_MODE; 5536 } 5537 5538 /** 5539 * Given a motion event from the WebTextView, set its location to our 5540 * coordinates, and handle the event. 5541 */ 5542 /*package*/ boolean textFieldDrag(MotionEvent event) { 5543 if (!inEditingMode()) { 5544 return false; 5545 } 5546 mDragFromTextInput = true; 5547 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 5548 (float) (mWebTextView.getTop() - mScrollY)); 5549 boolean result = onTouchEvent(event); 5550 mDragFromTextInput = false; 5551 return result; 5552 } 5553 5554 /** 5555 * Due a touch up from a WebTextView. This will be handled by webkit to 5556 * change the selection. 5557 * @param event MotionEvent in the WebTextView's coordinates. 5558 */ 5559 /*package*/ void touchUpOnTextField(MotionEvent event) { 5560 if (!inEditingMode()) { 5561 return; 5562 } 5563 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 5564 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 5565 nativeMotionUp(x, y, mNavSlop); 5566 } 5567 5568 /** 5569 * Called when pressing the center key or trackball on a textfield. 5570 */ 5571 /*package*/ void centerKeyPressOnTextField() { 5572 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 5573 nativeCursorNodePointer()); 5574 } 5575 5576 private void doShortPress() { 5577 if (mNativeClass == 0) { 5578 return; 5579 } 5580 switchOutDrawHistory(); 5581 // mLastTouchX and mLastTouchY are the point in the current viewport 5582 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5583 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5584 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 5585 WebViewCore.MotionUpData motionUpData = new WebViewCore 5586 .MotionUpData(); 5587 motionUpData.mFrame = nativeCacheHitFramePointer(); 5588 motionUpData.mNode = nativeCacheHitNodePointer(); 5589 motionUpData.mBounds = nativeCacheHitNodeBounds(); 5590 motionUpData.mX = contentX; 5591 motionUpData.mY = contentY; 5592 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 5593 motionUpData); 5594 } else { 5595 doMotionUp(contentX, contentY); 5596 } 5597 } 5598 5599 private void doMotionUp(int contentX, int contentY) { 5600 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 5601 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 5602 } 5603 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 5604 playSoundEffect(SoundEffectConstants.CLICK); 5605 } 5606 } 5607 5608 // Rule for double tap: 5609 // 1. if the current scale is not same as the text wrap scale and layout 5610 // algorithm is NARROW_COLUMNS, fit to column; 5611 // 2. if the current state is not overview mode, change to overview mode; 5612 // 3. if the current state is overview mode, change to default scale. 5613 private void doDoubleTap() { 5614 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 5615 return; 5616 } 5617 mZoomCenterX = mLastTouchX; 5618 mZoomCenterY = mLastTouchY; 5619 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5620 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5621 WebSettings settings = getSettings(); 5622 // remove the zoom control after double tap 5623 if (settings.getBuiltInZoomControls()) { 5624 if (mZoomButtonsController.isVisible()) { 5625 mZoomButtonsController.setVisible(false); 5626 } 5627 } else { 5628 if (mZoomControlRunnable != null) { 5629 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5630 } 5631 if (mZoomControls != null) { 5632 mZoomControls.hide(); 5633 } 5634 } 5635 settings.setDoubleTapToastCount(0); 5636 boolean zoomToDefault = false; 5637 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 5638 && (Math.abs(mActualScale - mTextWrapScale) >= 0.01f)) { 5639 setNewZoomScale(mActualScale, true, true); 5640 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 5641 if (Math.abs(mActualScale - overviewScale) < 0.01f) { 5642 mInZoomOverview = true; 5643 } 5644 } else if (!mInZoomOverview) { 5645 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 5646 if (Math.abs(mActualScale - newScale) >= 0.01f) { 5647 mInZoomOverview = true; 5648 // Force the titlebar fully reveal in overview mode 5649 if (mScrollY < getTitleHeight()) mScrollY = 0; 5650 zoomWithPreview(newScale); 5651 } else if (Math.abs(mActualScale - mDefaultScale) >= 0.01f) { 5652 zoomToDefault = true; 5653 } 5654 } else { 5655 zoomToDefault = true; 5656 } 5657 if (zoomToDefault) { 5658 mInZoomOverview = false; 5659 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 5660 if (left != NO_LEFTEDGE) { 5661 // add a 5pt padding to the left edge. 5662 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 5663 - mScrollX; 5664 // Re-calculate the zoom center so that the new scroll x will be 5665 // on the left edge. 5666 if (viewLeft > 0) { 5667 mZoomCenterX = viewLeft * mDefaultScale 5668 / (mDefaultScale - mActualScale); 5669 } else { 5670 scrollBy(viewLeft, 0); 5671 mZoomCenterX = 0; 5672 } 5673 } 5674 zoomWithPreview(mDefaultScale); 5675 } 5676 } 5677 5678 // Called by JNI to handle a touch on a node representing an email address, 5679 // address, or phone number 5680 private void overrideLoading(String url) { 5681 mCallbackProxy.uiOverrideUrlLoading(url); 5682 } 5683 5684 @Override 5685 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 5686 boolean result = false; 5687 if (inEditingMode()) { 5688 result = mWebTextView.requestFocus(direction, 5689 previouslyFocusedRect); 5690 } else { 5691 result = super.requestFocus(direction, previouslyFocusedRect); 5692 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 5693 // For cases such as GMail, where we gain focus from a direction, 5694 // we want to move to the first available link. 5695 // FIXME: If there are no visible links, we may not want to 5696 int fakeKeyDirection = 0; 5697 switch(direction) { 5698 case View.FOCUS_UP: 5699 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 5700 break; 5701 case View.FOCUS_DOWN: 5702 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 5703 break; 5704 case View.FOCUS_LEFT: 5705 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 5706 break; 5707 case View.FOCUS_RIGHT: 5708 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 5709 break; 5710 default: 5711 return result; 5712 } 5713 if (mNativeClass != 0 && !nativeHasCursorNode()) { 5714 navHandledKey(fakeKeyDirection, 1, true, 0, true); 5715 } 5716 } 5717 } 5718 return result; 5719 } 5720 5721 @Override 5722 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5723 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 5724 5725 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5726 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5727 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5728 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5729 5730 int measuredHeight = heightSize; 5731 int measuredWidth = widthSize; 5732 5733 // Grab the content size from WebViewCore. 5734 int contentHeight = contentToViewDimension(mContentHeight); 5735 int contentWidth = contentToViewDimension(mContentWidth); 5736 5737// Log.d(LOGTAG, "------- measure " + heightMode); 5738 5739 if (heightMode != MeasureSpec.EXACTLY) { 5740 mHeightCanMeasure = true; 5741 measuredHeight = contentHeight; 5742 if (heightMode == MeasureSpec.AT_MOST) { 5743 // If we are larger than the AT_MOST height, then our height can 5744 // no longer be measured and we should scroll internally. 5745 if (measuredHeight > heightSize) { 5746 measuredHeight = heightSize; 5747 mHeightCanMeasure = false; 5748 } 5749 } 5750 } else { 5751 mHeightCanMeasure = false; 5752 } 5753 if (mNativeClass != 0) { 5754 nativeSetHeightCanMeasure(mHeightCanMeasure); 5755 } 5756 // For the width, always use the given size unless unspecified. 5757 if (widthMode == MeasureSpec.UNSPECIFIED) { 5758 mWidthCanMeasure = true; 5759 measuredWidth = contentWidth; 5760 } else { 5761 mWidthCanMeasure = false; 5762 } 5763 5764 synchronized (this) { 5765 setMeasuredDimension(measuredWidth, measuredHeight); 5766 } 5767 } 5768 5769 @Override 5770 public boolean requestChildRectangleOnScreen(View child, 5771 Rect rect, 5772 boolean immediate) { 5773 rect.offset(child.getLeft() - child.getScrollX(), 5774 child.getTop() - child.getScrollY()); 5775 5776 int height = getViewHeightWithTitle(); 5777 int screenTop = mScrollY; 5778 int screenBottom = screenTop + height; 5779 5780 int scrollYDelta = 0; 5781 5782 if (rect.bottom > screenBottom) { 5783 int oneThirdOfScreenHeight = height / 3; 5784 if (rect.height() > 2 * oneThirdOfScreenHeight) { 5785 // If the rectangle is too tall to fit in the bottom two thirds 5786 // of the screen, place it at the top. 5787 scrollYDelta = rect.top - screenTop; 5788 } else { 5789 // If the rectangle will still fit on screen, we want its 5790 // top to be in the top third of the screen. 5791 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 5792 } 5793 } else if (rect.top < screenTop) { 5794 scrollYDelta = rect.top - screenTop; 5795 } 5796 5797 int width = getWidth() - getVerticalScrollbarWidth(); 5798 int screenLeft = mScrollX; 5799 int screenRight = screenLeft + width; 5800 5801 int scrollXDelta = 0; 5802 5803 if (rect.right > screenRight && rect.left > screenLeft) { 5804 if (rect.width() > width) { 5805 scrollXDelta += (rect.left - screenLeft); 5806 } else { 5807 scrollXDelta += (rect.right - screenRight); 5808 } 5809 } else if (rect.left < screenLeft) { 5810 scrollXDelta -= (screenLeft - rect.left); 5811 } 5812 5813 if ((scrollYDelta | scrollXDelta) != 0) { 5814 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 5815 } 5816 5817 return false; 5818 } 5819 5820 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 5821 String replace, int newStart, int newEnd) { 5822 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 5823 arg.mReplace = replace; 5824 arg.mNewStart = newStart; 5825 arg.mNewEnd = newEnd; 5826 mTextGeneration++; 5827 arg.mTextGeneration = mTextGeneration; 5828 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 5829 } 5830 5831 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 5832 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 5833 arg.mEvent = event; 5834 arg.mCurrentText = currentText; 5835 // Increase our text generation number, and pass it to webcore thread 5836 mTextGeneration++; 5837 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 5838 // WebKit's document state is not saved until about to leave the page. 5839 // To make sure the host application, like Browser, has the up to date 5840 // document state when it goes to background, we force to save the 5841 // document state. 5842 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 5843 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 5844 cursorData(), 1000); 5845 } 5846 5847 /* package */ WebViewCore getWebViewCore() { 5848 return mWebViewCore; 5849 } 5850 5851 //------------------------------------------------------------------------- 5852 // Methods can be called from a separate thread, like WebViewCore 5853 // If it needs to call the View system, it has to send message. 5854 //------------------------------------------------------------------------- 5855 5856 /** 5857 * General handler to receive message coming from webkit thread 5858 */ 5859 class PrivateHandler extends Handler { 5860 @Override 5861 public void handleMessage(Message msg) { 5862 // exclude INVAL_RECT_MSG_ID since it is frequently output 5863 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 5864 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 5865 > FIND_AGAIN ? Integer.toString(msg.what) 5866 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 5867 } 5868 if (mWebViewCore == null) { 5869 // after WebView's destroy() is called, skip handling messages. 5870 return; 5871 } 5872 switch (msg.what) { 5873 case REMEMBER_PASSWORD: { 5874 mDatabase.setUsernamePassword( 5875 msg.getData().getString("host"), 5876 msg.getData().getString("username"), 5877 msg.getData().getString("password")); 5878 ((Message) msg.obj).sendToTarget(); 5879 break; 5880 } 5881 case NEVER_REMEMBER_PASSWORD: { 5882 mDatabase.setUsernamePassword( 5883 msg.getData().getString("host"), null, null); 5884 ((Message) msg.obj).sendToTarget(); 5885 break; 5886 } 5887 case SWITCH_TO_SHORTPRESS: { 5888 // if mPreventDrag is not confirmed, cancel it so that it 5889 // won't block panning the page. 5890 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5891 mPreventDrag = PREVENT_DRAG_CANCEL; 5892 mPreventLongPress = false; 5893 mPreventDoubleTap = false; 5894 // remove the pending TOUCH_EVENT and send a cancel 5895 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5896 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 5897 ted.mAction = MotionEvent.ACTION_CANCEL; 5898 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5899 } 5900 if (mTouchMode == TOUCH_INIT_MODE) { 5901 mTouchMode = mFullScreenHolder == null 5902 ? TOUCH_SHORTPRESS_START_MODE 5903 : TOUCH_SHORTPRESS_MODE; 5904 updateSelection(); 5905 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5906 mTouchMode = TOUCH_DONE_MODE; 5907 } 5908 break; 5909 } 5910 case SWITCH_TO_LONGPRESS: { 5911 if (mPreventLongPress) { 5912 mTouchMode = TOUCH_DONE_MODE; 5913 WebViewCore.TouchEventData ted 5914 = new WebViewCore.TouchEventData(); 5915 ted.mAction = WebViewCore.ACTION_LONGPRESS; 5916 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 5917 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 5918 ted.mEventTime = SystemClock.uptimeMillis(); 5919 // metaState for long press is tricky. Should it be the state 5920 // when the press started or when the press was released? Or 5921 // some intermediary key state? For simplicity for now, we 5922 // don't set it. 5923 ted.mMetaState = 0; 5924 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5925 } else if (mPreventDrag != PREVENT_DRAG_YES) { 5926 mTouchMode = TOUCH_DONE_MODE; 5927 if (mFullScreenHolder == null) { 5928 performLongClick(); 5929 rebuildWebTextView(); 5930 } 5931 } 5932 break; 5933 } 5934 case RELEASE_SINGLE_TAP: { 5935 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5936 // if mPreventDrag is not confirmed, cancel it so that 5937 // it won't block panning the page. 5938 mPreventDrag = PREVENT_DRAG_CANCEL; 5939 mPreventLongPress = false; 5940 mPreventDoubleTap = false; 5941 // remove the pending TOUCH_EVENT and send a cancel 5942 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5943 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 5944 ted.mAction = MotionEvent.ACTION_CANCEL; 5945 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5946 } 5947 if (mPreventDrag != PREVENT_DRAG_YES) { 5948 mTouchMode = TOUCH_DONE_MODE; 5949 doShortPress(); 5950 } 5951 break; 5952 } 5953 case SCROLL_BY_MSG_ID: 5954 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 5955 break; 5956 case SYNC_SCROLL_TO_MSG_ID: 5957 if (mUserScroll) { 5958 // if user has scrolled explicitly, don't sync the 5959 // scroll position any more 5960 mUserScroll = false; 5961 break; 5962 } 5963 // fall through 5964 case SCROLL_TO_MSG_ID: 5965 if (setContentScrollTo(msg.arg1, msg.arg2)) { 5966 // if we can't scroll to the exact position due to pin, 5967 // send a message to WebCore to re-scroll when we get a 5968 // new picture 5969 mUserScroll = false; 5970 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 5971 msg.arg1, msg.arg2); 5972 } 5973 break; 5974 case SPAWN_SCROLL_TO_MSG_ID: 5975 spawnContentScrollTo(msg.arg1, msg.arg2); 5976 break; 5977 case UPDATE_ZOOM_RANGE: { 5978 WebViewCore.RestoreState restoreState 5979 = (WebViewCore.RestoreState) msg.obj; 5980 // mScrollX contains the new minPrefWidth 5981 updateZoomRange(restoreState, getViewWidth(), 5982 restoreState.mScrollX, false); 5983 break; 5984 } 5985 case NEW_PICTURE_MSG_ID: { 5986 WebSettings settings = mWebViewCore.getSettings(); 5987 // called for new content 5988 final int viewWidth = getViewWidth(); 5989 final WebViewCore.DrawData draw = 5990 (WebViewCore.DrawData) msg.obj; 5991 final Point viewSize = draw.mViewPoint; 5992 boolean useWideViewport = settings.getUseWideViewPort(); 5993 WebViewCore.RestoreState restoreState = draw.mRestoreState; 5994 boolean hasRestoreState = restoreState != null; 5995 if (hasRestoreState) { 5996 updateZoomRange(restoreState, viewSize.x, 5997 draw.mMinPrefWidth, true); 5998 if (!mDrawHistory) { 5999 mInZoomOverview = false; 6000 6001 if (mInitialScaleInPercent > 0) { 6002 setNewZoomScale(mInitialScaleInPercent / 100.0f, 6003 mInitialScaleInPercent != mTextWrapScale * 100, 6004 false); 6005 } else if (restoreState.mViewScale > 0) { 6006 mTextWrapScale = restoreState.mTextWrapScale; 6007 setNewZoomScale(restoreState.mViewScale, false, 6008 false); 6009 } else { 6010 mInZoomOverview = useWideViewport 6011 && settings.getLoadWithOverviewMode(); 6012 float scale; 6013 if (mInZoomOverview) { 6014 scale = (float) viewWidth 6015 / DEFAULT_VIEWPORT_WIDTH; 6016 } else { 6017 scale = restoreState.mTextWrapScale; 6018 } 6019 setNewZoomScale(scale, Math.abs(scale 6020 - mTextWrapScale) >= 0.01f, false); 6021 } 6022 setContentScrollTo(restoreState.mScrollX, 6023 restoreState.mScrollY); 6024 // As we are on a new page, remove the WebTextView. This 6025 // is necessary for page loads driven by webkit, and in 6026 // particular when the user was on a password field, so 6027 // the WebTextView was visible. 6028 clearTextEntry(false); 6029 // update the zoom buttons as the scale can be changed 6030 if (getSettings().getBuiltInZoomControls()) { 6031 updateZoomButtonsEnabled(); 6032 } 6033 } 6034 } 6035 // We update the layout (i.e. request a layout from the 6036 // view system) if the last view size that we sent to 6037 // WebCore matches the view size of the picture we just 6038 // received in the fixed dimension. 6039 final boolean updateLayout = viewSize.x == mLastWidthSent 6040 && viewSize.y == mLastHeightSent; 6041 recordNewContentSize(draw.mWidthHeight.x, 6042 draw.mWidthHeight.y 6043 + (mFindIsUp ? mFindHeight : 0), updateLayout); 6044 if (DebugFlags.WEB_VIEW) { 6045 Rect b = draw.mInvalRegion.getBounds(); 6046 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6047 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6048 } 6049 invalidateContentRect(draw.mInvalRegion.getBounds()); 6050 if (mPictureListener != null) { 6051 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6052 } 6053 if (useWideViewport) { 6054 // limit mZoomOverviewWidth upper bound to 6055 // sMaxViewportWidth so that if the page doesn't behave 6056 // well, the WebView won't go insane. limit the lower 6057 // bound to match the default scale for mobile sites. 6058 mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math 6059 .max((int) (viewWidth / mDefaultScale), Math 6060 .max(draw.mMinPrefWidth, 6061 draw.mViewPoint.x))); 6062 } 6063 if (!mMinZoomScaleFixed) { 6064 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 6065 } 6066 if (!mDrawHistory && mInZoomOverview) { 6067 // fit the content width to the current view. Ignore 6068 // the rounding error case. 6069 if (Math.abs((viewWidth * mInvActualScale) 6070 - mZoomOverviewWidth) > 1) { 6071 setNewZoomScale((float) viewWidth 6072 / mZoomOverviewWidth, Math.abs(mActualScale 6073 - mTextWrapScale) < 0.01f, false); 6074 } 6075 } 6076 if (draw.mFocusSizeChanged && inEditingMode()) { 6077 mFocusSizeChanged = true; 6078 } 6079 if (hasRestoreState) { 6080 mViewManager.postReadyToDrawAll(); 6081 } 6082 break; 6083 } 6084 case WEBCORE_INITIALIZED_MSG_ID: 6085 // nativeCreate sets mNativeClass to a non-zero value 6086 nativeCreate(msg.arg1); 6087 break; 6088 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6089 // Make sure that the textfield is currently focused 6090 // and representing the same node as the pointer. 6091 if (inEditingMode() && 6092 mWebTextView.isSameTextField(msg.arg1)) { 6093 if (msg.getData().getBoolean("password")) { 6094 Spannable text = (Spannable) mWebTextView.getText(); 6095 int start = Selection.getSelectionStart(text); 6096 int end = Selection.getSelectionEnd(text); 6097 mWebTextView.setInPassword(true); 6098 // Restore the selection, which may have been 6099 // ruined by setInPassword. 6100 Spannable pword = 6101 (Spannable) mWebTextView.getText(); 6102 Selection.setSelection(pword, start, end); 6103 // If the text entry has created more events, ignore 6104 // this one. 6105 } else if (msg.arg2 == mTextGeneration) { 6106 mWebTextView.setTextAndKeepSelection( 6107 (String) msg.obj); 6108 } 6109 } 6110 break; 6111 case UPDATE_TEXT_SELECTION_MSG_ID: 6112 // If no textfield was in focus, and the user touched one, 6113 // causing it to send this message, then WebTextView has not 6114 // been set up yet. Rebuild it so it can set its selection. 6115 rebuildWebTextView(); 6116 if (inEditingMode() 6117 && mWebTextView.isSameTextField(msg.arg1) 6118 && msg.arg2 == mTextGeneration) { 6119 WebViewCore.TextSelectionData tData 6120 = (WebViewCore.TextSelectionData) msg.obj; 6121 mWebTextView.setSelectionFromWebKit(tData.mStart, 6122 tData.mEnd); 6123 } 6124 break; 6125 case RETURN_LABEL: 6126 if (inEditingMode() 6127 && mWebTextView.isSameTextField(msg.arg1)) { 6128 mWebTextView.setHint((String) msg.obj); 6129 InputMethodManager imm 6130 = InputMethodManager.peekInstance(); 6131 // The hint is propagated to the IME in 6132 // onCreateInputConnection. If the IME is already 6133 // active, restart it so that its hint text is updated. 6134 if (imm != null && imm.isActive(mWebTextView)) { 6135 imm.restartInput(mWebTextView); 6136 } 6137 } 6138 break; 6139 case MOVE_OUT_OF_PLUGIN: 6140 navHandledKey(msg.arg1, 1, false, 0, true); 6141 break; 6142 case UPDATE_TEXT_ENTRY_MSG_ID: 6143 // this is sent after finishing resize in WebViewCore. Make 6144 // sure the text edit box is still on the screen. 6145 if (inEditingMode() && nativeCursorIsTextInput()) { 6146 mWebTextView.bringIntoView(); 6147 rebuildWebTextView(); 6148 } 6149 break; 6150 case CLEAR_TEXT_ENTRY: 6151 clearTextEntry(false); 6152 break; 6153 case INVAL_RECT_MSG_ID: { 6154 Rect r = (Rect)msg.obj; 6155 if (r == null) { 6156 invalidate(); 6157 } else { 6158 // we need to scale r from content into view coords, 6159 // which viewInvalidate() does for us 6160 viewInvalidate(r.left, r.top, r.right, r.bottom); 6161 } 6162 break; 6163 } 6164 case IMMEDIATE_REPAINT_MSG_ID: { 6165 invalidate(); 6166 break; 6167 } 6168 case SET_ROOT_LAYER_MSG_ID: { 6169 nativeSetRootLayer(msg.arg1); 6170 invalidate(); 6171 break; 6172 } 6173 case REQUEST_FORM_DATA: 6174 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6175 if (mWebTextView.isSameTextField(msg.arg1)) { 6176 mWebTextView.setAdapterCustom(adapter); 6177 } 6178 break; 6179 case RESUME_WEBCORE_PRIORITY: 6180 WebViewCore.resumePriority(); 6181 break; 6182 6183 case LONG_PRESS_CENTER: 6184 // as this is shared by keydown and trackballdown, reset all 6185 // the states 6186 mGotCenterDown = false; 6187 mTrackballDown = false; 6188 performLongClick(); 6189 break; 6190 6191 case WEBCORE_NEED_TOUCH_EVENTS: 6192 mForwardTouchEvents = (msg.arg1 != 0); 6193 break; 6194 6195 case PREVENT_TOUCH_ID: 6196 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 6197 // dont override if mPreventDrag has been set to no due 6198 // to time out 6199 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 6200 mPreventDrag = (msg.arg2 & TOUCH_PREVENT_DRAG) 6201 == TOUCH_PREVENT_DRAG ? PREVENT_DRAG_YES 6202 : PREVENT_DRAG_NO; 6203 if (mPreventDrag == PREVENT_DRAG_YES) { 6204 mTouchMode = TOUCH_DONE_MODE; 6205 } else { 6206 mPreventLongPress = 6207 (msg.arg2 & TOUCH_PREVENT_LONGPRESS) 6208 == TOUCH_PREVENT_LONGPRESS; 6209 mPreventDoubleTap = 6210 (msg.arg2 & TOUCH_PREVENT_DOUBLETAP) 6211 == TOUCH_PREVENT_DOUBLETAP; 6212 } 6213 } 6214 } 6215 break; 6216 6217 case REQUEST_KEYBOARD: 6218 if (msg.arg1 == 0) { 6219 hideSoftKeyboard(); 6220 } else { 6221 displaySoftKeyboard(1 == msg.arg2); 6222 } 6223 break; 6224 6225 case FIND_AGAIN: 6226 // Ignore if find has been dismissed. 6227 if (mFindIsUp) { 6228 findAll(mLastFind); 6229 } 6230 break; 6231 6232 case DRAG_HELD_MOTIONLESS: 6233 mHeldMotionless = MOTIONLESS_TRUE; 6234 invalidate(); 6235 // fall through to keep scrollbars awake 6236 6237 case AWAKEN_SCROLL_BARS: 6238 if (mTouchMode == TOUCH_DRAG_MODE 6239 && mHeldMotionless == MOTIONLESS_TRUE) { 6240 awakenScrollBars(ViewConfiguration 6241 .getScrollDefaultDelay(), false); 6242 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6243 .obtainMessage(AWAKEN_SCROLL_BARS), 6244 ViewConfiguration.getScrollDefaultDelay()); 6245 } 6246 break; 6247 6248 case DO_MOTION_UP: 6249 doMotionUp(msg.arg1, msg.arg2); 6250 break; 6251 6252 case SHOW_FULLSCREEN: { 6253 WebViewCore.PluginFullScreenData data 6254 = (WebViewCore.PluginFullScreenData) msg.obj; 6255 if (data.mNpp != 0 && data.mView != null) { 6256 if (mFullScreenHolder != null) { 6257 Log.w(LOGTAG, 6258 "Should not have another full screen."); 6259 mFullScreenHolder.dismiss(); 6260 } 6261 mFullScreenHolder = new PluginFullScreenHolder( 6262 WebView.this, data.mNpp); 6263 // as we are sharing the View between full screen and 6264 // embedded mode, we have to remove the 6265 // AbsoluteLayout.LayoutParams set by embedded mode to 6266 // ViewGroup.LayoutParams before adding it to the dialog 6267 data.mView.setLayoutParams(new ViewGroup.LayoutParams( 6268 ViewGroup.LayoutParams.FILL_PARENT, 6269 ViewGroup.LayoutParams.FILL_PARENT)); 6270 mFullScreenHolder.setContentView(data.mView); 6271 mFullScreenHolder.setCancelable(false); 6272 mFullScreenHolder.setCanceledOnTouchOutside(false); 6273 mFullScreenHolder.show(); 6274 } else if (mFullScreenHolder == null) { 6275 // this may happen if user dismisses the fullscreen and 6276 // then the WebCore re-position message finally reached 6277 // the UI thread. 6278 break; 6279 } 6280 // move the matching embedded view fully into the view so 6281 // that touch will be valid instead of rejected due to out 6282 // of the visible bounds 6283 // TODO: do we need to preserve the original position and 6284 // scale so that we can revert it when leaving the full 6285 // screen mode? 6286 int x = contentToViewX(data.mDocX); 6287 int y = contentToViewY(data.mDocY); 6288 int width = contentToViewDimension(data.mDocWidth); 6289 int height = contentToViewDimension(data.mDocHeight); 6290 int viewWidth = getViewWidth(); 6291 int viewHeight = getViewHeight(); 6292 int newX = mScrollX; 6293 int newY = mScrollY; 6294 if (x < mScrollX) { 6295 newX = x + (width > viewWidth 6296 ? (width - viewWidth) / 2 : 0); 6297 } else if (x + width > mScrollX + viewWidth) { 6298 newX = x + width - viewWidth - (width > viewWidth 6299 ? (width - viewWidth) / 2 : 0); 6300 } 6301 if (y < mScrollY) { 6302 newY = y + (height > viewHeight 6303 ? (height - viewHeight) / 2 : 0); 6304 } else if (y + height > mScrollY + viewHeight) { 6305 newY = y + height - viewHeight - (height > viewHeight 6306 ? (height - viewHeight) / 2 : 0); 6307 } 6308 scrollTo(newX, newY); 6309 if (width > viewWidth || height > viewHeight) { 6310 mZoomCenterX = viewWidth * .5f; 6311 mZoomCenterY = viewHeight * .5f; 6312 // do not change text wrap scale so that there is no 6313 // reflow 6314 setNewZoomScale(mActualScale 6315 / Math.max((float) width / viewWidth, 6316 (float) height / viewHeight), false, 6317 false); 6318 } 6319 // Now update the bound 6320 mFullScreenHolder.updateBound(contentToViewX(data.mDocX) 6321 - mScrollX, contentToViewY(data.mDocY) - mScrollY, 6322 contentToViewDimension(data.mDocWidth), 6323 contentToViewDimension(data.mDocHeight)); 6324 } 6325 break; 6326 6327 case HIDE_FULLSCREEN: 6328 if (mFullScreenHolder != null) { 6329 mFullScreenHolder.dismiss(); 6330 mFullScreenHolder = null; 6331 } 6332 break; 6333 6334 case DOM_FOCUS_CHANGED: 6335 if (inEditingMode()) { 6336 nativeClearCursor(); 6337 rebuildWebTextView(); 6338 } 6339 break; 6340 6341 case SHOW_RECT_MSG_ID: { 6342 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6343 int x = mScrollX; 6344 int left = contentToViewX(data.mLeft); 6345 int width = contentToViewDimension(data.mWidth); 6346 int maxWidth = contentToViewDimension(data.mContentWidth); 6347 int viewWidth = getViewWidth(); 6348 if (width < viewWidth) { 6349 // center align 6350 x += left + width / 2 - mScrollX - viewWidth / 2; 6351 } else { 6352 x += (int) (left + data.mXPercentInDoc * width 6353 - mScrollX - data.mXPercentInView * viewWidth); 6354 } 6355 if (DebugFlags.WEB_VIEW) { 6356 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6357 width + ",maxWidth=" + maxWidth + 6358 ",viewWidth=" + viewWidth + ",x=" 6359 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6360 ",xPercentInView=" + data.mXPercentInView+ ")"); 6361 } 6362 // use the passing content width to cap x as the current 6363 // mContentWidth may not be updated yet 6364 x = Math.max(0, 6365 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6366 int top = contentToViewY(data.mTop); 6367 int height = contentToViewDimension(data.mHeight); 6368 int maxHeight = contentToViewDimension(data.mContentHeight); 6369 int viewHeight = getViewHeight(); 6370 int y = (int) (top + data.mYPercentInDoc * height - 6371 data.mYPercentInView * viewHeight); 6372 if (DebugFlags.WEB_VIEW) { 6373 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6374 height + ",maxHeight=" + maxHeight + 6375 ",viewHeight=" + viewHeight + ",y=" 6376 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6377 ",yPercentInView=" + data.mYPercentInView+ ")"); 6378 } 6379 // use the passing content height to cap y as the current 6380 // mContentHeight may not be updated yet 6381 y = Math.max(0, 6382 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6383 // We need to take into account the visible title height 6384 // when scrolling since y is an absolute view position. 6385 y = Math.max(0, y - getVisibleTitleHeight()); 6386 scrollTo(x, y); 6387 } 6388 break; 6389 6390 default: 6391 super.handleMessage(msg); 6392 break; 6393 } 6394 } 6395 } 6396 6397 // Class used to use a dropdown for a <select> element 6398 private class InvokeListBox implements Runnable { 6399 // Whether the listbox allows multiple selection. 6400 private boolean mMultiple; 6401 // Passed in to a list with multiple selection to tell 6402 // which items are selected. 6403 private int[] mSelectedArray; 6404 // Passed in to a list with single selection to tell 6405 // where the initial selection is. 6406 private int mSelection; 6407 6408 private Container[] mContainers; 6409 6410 // Need these to provide stable ids to my ArrayAdapter, 6411 // which normally does not have stable ids. (Bug 1250098) 6412 private class Container extends Object { 6413 /** 6414 * Possible values for mEnabled. Keep in sync with OptionStatus in 6415 * WebViewCore.cpp 6416 */ 6417 final static int OPTGROUP = -1; 6418 final static int OPTION_DISABLED = 0; 6419 final static int OPTION_ENABLED = 1; 6420 6421 String mString; 6422 int mEnabled; 6423 int mId; 6424 6425 public String toString() { 6426 return mString; 6427 } 6428 } 6429 6430 /** 6431 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6432 * and allow filtering. 6433 */ 6434 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6435 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6436 super(context, 6437 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6438 com.android.internal.R.layout.select_dialog_singlechoice, 6439 objects); 6440 } 6441 6442 @Override 6443 public View getView(int position, View convertView, 6444 ViewGroup parent) { 6445 // Always pass in null so that we will get a new CheckedTextView 6446 // Otherwise, an item which was previously used as an <optgroup> 6447 // element (i.e. has no check), could get used as an <option> 6448 // element, which needs a checkbox/radio, but it would not have 6449 // one. 6450 convertView = super.getView(position, null, parent); 6451 Container c = item(position); 6452 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6453 // ListView does not draw dividers between disabled and 6454 // enabled elements. Use a LinearLayout to provide dividers 6455 LinearLayout layout = new LinearLayout(mContext); 6456 layout.setOrientation(LinearLayout.VERTICAL); 6457 if (position > 0) { 6458 View dividerTop = new View(mContext); 6459 dividerTop.setBackgroundResource( 6460 android.R.drawable.divider_horizontal_bright); 6461 layout.addView(dividerTop); 6462 } 6463 6464 if (Container.OPTGROUP == c.mEnabled) { 6465 // Currently select_dialog_multichoice and 6466 // select_dialog_singlechoice are CheckedTextViews. If 6467 // that changes, the class cast will no longer be valid. 6468 Assert.assertTrue( 6469 convertView instanceof CheckedTextView); 6470 ((CheckedTextView) convertView).setCheckMarkDrawable( 6471 null); 6472 } else { 6473 // c.mEnabled == Container.OPTION_DISABLED 6474 // Draw the disabled element in a disabled state. 6475 convertView.setEnabled(false); 6476 } 6477 6478 layout.addView(convertView); 6479 if (position < getCount() - 1) { 6480 View dividerBottom = new View(mContext); 6481 dividerBottom.setBackgroundResource( 6482 android.R.drawable.divider_horizontal_bright); 6483 layout.addView(dividerBottom); 6484 } 6485 return layout; 6486 } 6487 return convertView; 6488 } 6489 6490 @Override 6491 public boolean hasStableIds() { 6492 // AdapterView's onChanged method uses this to determine whether 6493 // to restore the old state. Return false so that the old (out 6494 // of date) state does not replace the new, valid state. 6495 return false; 6496 } 6497 6498 private Container item(int position) { 6499 if (position < 0 || position >= getCount()) { 6500 return null; 6501 } 6502 return (Container) getItem(position); 6503 } 6504 6505 @Override 6506 public long getItemId(int position) { 6507 Container item = item(position); 6508 if (item == null) { 6509 return -1; 6510 } 6511 return item.mId; 6512 } 6513 6514 @Override 6515 public boolean areAllItemsEnabled() { 6516 return false; 6517 } 6518 6519 @Override 6520 public boolean isEnabled(int position) { 6521 Container item = item(position); 6522 if (item == null) { 6523 return false; 6524 } 6525 return Container.OPTION_ENABLED == item.mEnabled; 6526 } 6527 } 6528 6529 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 6530 mMultiple = true; 6531 mSelectedArray = selected; 6532 6533 int length = array.length; 6534 mContainers = new Container[length]; 6535 for (int i = 0; i < length; i++) { 6536 mContainers[i] = new Container(); 6537 mContainers[i].mString = array[i]; 6538 mContainers[i].mEnabled = enabled[i]; 6539 mContainers[i].mId = i; 6540 } 6541 } 6542 6543 private InvokeListBox(String[] array, int[] enabled, int selection) { 6544 mSelection = selection; 6545 mMultiple = false; 6546 6547 int length = array.length; 6548 mContainers = new Container[length]; 6549 for (int i = 0; i < length; i++) { 6550 mContainers[i] = new Container(); 6551 mContainers[i].mString = array[i]; 6552 mContainers[i].mEnabled = enabled[i]; 6553 mContainers[i].mId = i; 6554 } 6555 } 6556 6557 /* 6558 * Whenever the data set changes due to filtering, this class ensures 6559 * that the checked item remains checked. 6560 */ 6561 private class SingleDataSetObserver extends DataSetObserver { 6562 private long mCheckedId; 6563 private ListView mListView; 6564 private Adapter mAdapter; 6565 6566 /* 6567 * Create a new observer. 6568 * @param id The ID of the item to keep checked. 6569 * @param l ListView for getting and clearing the checked states 6570 * @param a Adapter for getting the IDs 6571 */ 6572 public SingleDataSetObserver(long id, ListView l, Adapter a) { 6573 mCheckedId = id; 6574 mListView = l; 6575 mAdapter = a; 6576 } 6577 6578 public void onChanged() { 6579 // The filter may have changed which item is checked. Find the 6580 // item that the ListView thinks is checked. 6581 int position = mListView.getCheckedItemPosition(); 6582 long id = mAdapter.getItemId(position); 6583 if (mCheckedId != id) { 6584 // Clear the ListView's idea of the checked item, since 6585 // it is incorrect 6586 mListView.clearChoices(); 6587 // Search for mCheckedId. If it is in the filtered list, 6588 // mark it as checked 6589 int count = mAdapter.getCount(); 6590 for (int i = 0; i < count; i++) { 6591 if (mAdapter.getItemId(i) == mCheckedId) { 6592 mListView.setItemChecked(i, true); 6593 break; 6594 } 6595 } 6596 } 6597 } 6598 6599 public void onInvalidate() {} 6600 } 6601 6602 public void run() { 6603 final ListView listView = (ListView) LayoutInflater.from(mContext) 6604 .inflate(com.android.internal.R.layout.select_dialog, null); 6605 final MyArrayListAdapter adapter = new 6606 MyArrayListAdapter(mContext, mContainers, mMultiple); 6607 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 6608 .setView(listView).setCancelable(true) 6609 .setInverseBackgroundForced(true); 6610 6611 if (mMultiple) { 6612 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 6613 public void onClick(DialogInterface dialog, int which) { 6614 mWebViewCore.sendMessage( 6615 EventHub.LISTBOX_CHOICES, 6616 adapter.getCount(), 0, 6617 listView.getCheckedItemPositions()); 6618 }}); 6619 b.setNegativeButton(android.R.string.cancel, 6620 new DialogInterface.OnClickListener() { 6621 public void onClick(DialogInterface dialog, int which) { 6622 mWebViewCore.sendMessage( 6623 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6624 }}); 6625 } 6626 final AlertDialog dialog = b.create(); 6627 listView.setAdapter(adapter); 6628 listView.setFocusableInTouchMode(true); 6629 // There is a bug (1250103) where the checks in a ListView with 6630 // multiple items selected are associated with the positions, not 6631 // the ids, so the items do not properly retain their checks when 6632 // filtered. Do not allow filtering on multiple lists until 6633 // that bug is fixed. 6634 6635 listView.setTextFilterEnabled(!mMultiple); 6636 if (mMultiple) { 6637 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 6638 int length = mSelectedArray.length; 6639 for (int i = 0; i < length; i++) { 6640 listView.setItemChecked(mSelectedArray[i], true); 6641 } 6642 } else { 6643 listView.setOnItemClickListener(new OnItemClickListener() { 6644 public void onItemClick(AdapterView parent, View v, 6645 int position, long id) { 6646 mWebViewCore.sendMessage( 6647 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 6648 dialog.dismiss(); 6649 } 6650 }); 6651 if (mSelection != -1) { 6652 listView.setSelection(mSelection); 6653 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 6654 listView.setItemChecked(mSelection, true); 6655 DataSetObserver observer = new SingleDataSetObserver( 6656 adapter.getItemId(mSelection), listView, adapter); 6657 adapter.registerDataSetObserver(observer); 6658 } 6659 } 6660 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 6661 public void onCancel(DialogInterface dialog) { 6662 mWebViewCore.sendMessage( 6663 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6664 } 6665 }); 6666 dialog.show(); 6667 } 6668 } 6669 6670 /* 6671 * Request a dropdown menu for a listbox with multiple selection. 6672 * 6673 * @param array Labels for the listbox. 6674 * @param enabledArray State for each element in the list. See static 6675 * integers in Container class. 6676 * @param selectedArray Which positions are initally selected. 6677 */ 6678 void requestListBox(String[] array, int[] enabledArray, int[] 6679 selectedArray) { 6680 mPrivateHandler.post( 6681 new InvokeListBox(array, enabledArray, selectedArray)); 6682 } 6683 6684 private void updateZoomRange(WebViewCore.RestoreState restoreState, 6685 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 6686 if (restoreState.mMinScale == 0) { 6687 if (restoreState.mMobileSite) { 6688 if (minPrefWidth > Math.max(0, viewWidth)) { 6689 mMinZoomScale = (float) viewWidth / minPrefWidth; 6690 mMinZoomScaleFixed = false; 6691 if (updateZoomOverview) { 6692 WebSettings settings = getSettings(); 6693 mInZoomOverview = settings.getUseWideViewPort() && 6694 settings.getLoadWithOverviewMode(); 6695 } 6696 } else { 6697 mMinZoomScale = restoreState.mDefaultScale; 6698 mMinZoomScaleFixed = true; 6699 } 6700 } else { 6701 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 6702 mMinZoomScaleFixed = false; 6703 } 6704 } else { 6705 mMinZoomScale = restoreState.mMinScale; 6706 mMinZoomScaleFixed = true; 6707 } 6708 if (restoreState.mMaxScale == 0) { 6709 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 6710 } else { 6711 mMaxZoomScale = restoreState.mMaxScale; 6712 } 6713 } 6714 6715 /* 6716 * Request a dropdown menu for a listbox with single selection or a single 6717 * <select> element. 6718 * 6719 * @param array Labels for the listbox. 6720 * @param enabledArray State for each element in the list. See static 6721 * integers in Container class. 6722 * @param selection Which position is initally selected. 6723 */ 6724 void requestListBox(String[] array, int[] enabledArray, int selection) { 6725 mPrivateHandler.post( 6726 new InvokeListBox(array, enabledArray, selection)); 6727 } 6728 6729 // called by JNI 6730 private void sendMoveFocus(int frame, int node) { 6731 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 6732 new WebViewCore.CursorData(frame, node, 0, 0)); 6733 } 6734 6735 // called by JNI 6736 private void sendMoveMouse(int frame, int node, int x, int y) { 6737 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 6738 new WebViewCore.CursorData(frame, node, x, y)); 6739 } 6740 6741 /* 6742 * Send a mouse move event to the webcore thread. 6743 * 6744 * @param removeFocus Pass true if the "mouse" cursor is now over a node 6745 * which wants key events, but it is not the focus. This 6746 * will make the visual appear as though nothing is in 6747 * focus. Remove the WebTextView, if present, and stop 6748 * drawing the blinking caret. 6749 * called by JNI 6750 */ 6751 private void sendMoveMouseIfLatest(boolean removeFocus) { 6752 if (removeFocus) { 6753 clearTextEntry(true); 6754 } 6755 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 6756 cursorData()); 6757 } 6758 6759 // called by JNI 6760 private void sendMotionUp(int touchGeneration, 6761 int frame, int node, int x, int y) { 6762 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6763 touchUpData.mMoveGeneration = touchGeneration; 6764 touchUpData.mFrame = frame; 6765 touchUpData.mNode = node; 6766 touchUpData.mX = x; 6767 touchUpData.mY = y; 6768 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6769 } 6770 6771 6772 private int getScaledMaxXScroll() { 6773 int width; 6774 if (mHeightCanMeasure == false) { 6775 width = getViewWidth() / 4; 6776 } else { 6777 Rect visRect = new Rect(); 6778 calcOurVisibleRect(visRect); 6779 width = visRect.width() / 2; 6780 } 6781 // FIXME the divisor should be retrieved from somewhere 6782 return viewToContentX(width); 6783 } 6784 6785 private int getScaledMaxYScroll() { 6786 int height; 6787 if (mHeightCanMeasure == false) { 6788 height = getViewHeight() / 4; 6789 } else { 6790 Rect visRect = new Rect(); 6791 calcOurVisibleRect(visRect); 6792 height = visRect.height() / 2; 6793 } 6794 // FIXME the divisor should be retrieved from somewhere 6795 // the closest thing today is hard-coded into ScrollView.java 6796 // (from ScrollView.java, line 363) int maxJump = height/2; 6797 return Math.round(height * mInvActualScale); 6798 } 6799 6800 /** 6801 * Called by JNI to invalidate view 6802 */ 6803 private void viewInvalidate() { 6804 invalidate(); 6805 } 6806 6807 // return true if the key was handled 6808 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 6809 long time, boolean ignorePlugin) { 6810 if (mNativeClass == 0) { 6811 return false; 6812 } 6813 if (ignorePlugin == false && nativeFocusIsPlugin()) { 6814 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 6815 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 6816 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 6817 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 6818 , 0, 0, 0); 6819 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 6820 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 6821 return true; 6822 } 6823 mLastCursorTime = time; 6824 mLastCursorBounds = nativeGetCursorRingBounds(); 6825 boolean keyHandled 6826 = nativeMoveCursor(keyCode, count, noScroll) == false; 6827 if (DebugFlags.WEB_VIEW) { 6828 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 6829 + " mLastCursorTime=" + mLastCursorTime 6830 + " handled=" + keyHandled); 6831 } 6832 if (keyHandled == false || mHeightCanMeasure == false) { 6833 return keyHandled; 6834 } 6835 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 6836 if (contentCursorRingBounds.isEmpty()) return keyHandled; 6837 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 6838 Rect visRect = new Rect(); 6839 calcOurVisibleRect(visRect); 6840 Rect outset = new Rect(visRect); 6841 int maxXScroll = visRect.width() / 2; 6842 int maxYScroll = visRect.height() / 2; 6843 outset.inset(-maxXScroll, -maxYScroll); 6844 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 6845 return keyHandled; 6846 } 6847 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 6848 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 6849 maxXScroll); 6850 if (maxH > 0) { 6851 pinScrollBy(maxH, 0, true, 0); 6852 } else { 6853 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 6854 -maxXScroll); 6855 if (maxH < 0) { 6856 pinScrollBy(maxH, 0, true, 0); 6857 } 6858 } 6859 if (mLastCursorBounds.isEmpty()) return keyHandled; 6860 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 6861 return keyHandled; 6862 } 6863 if (DebugFlags.WEB_VIEW) { 6864 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 6865 + contentCursorRingBounds); 6866 } 6867 requestRectangleOnScreen(viewCursorRingBounds); 6868 mUserScroll = true; 6869 return keyHandled; 6870 } 6871 6872 /** 6873 * Set the background color. It's white by default. Pass 6874 * zero to make the view transparent. 6875 * @param color the ARGB color described by Color.java 6876 */ 6877 public void setBackgroundColor(int color) { 6878 mBackgroundColor = color; 6879 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 6880 } 6881 6882 public void debugDump() { 6883 nativeDebugDump(); 6884 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 6885 } 6886 6887 /** 6888 * Draw the HTML page into the specified canvas. This call ignores any 6889 * view-specific zoom, scroll offset, or other changes. It does not draw 6890 * any view-specific chrome, such as progress or URL bars. 6891 * 6892 * @hide only needs to be accessible to Browser and testing 6893 */ 6894 public void drawPage(Canvas canvas) { 6895 mWebViewCore.drawContentPicture(canvas, 0, false, false); 6896 } 6897 6898 /** 6899 * Set the time to wait between passing touches to WebCore. See also the 6900 * TOUCH_SENT_INTERVAL member for further discussion. 6901 * 6902 * @hide This is only used by the DRT test application. 6903 */ 6904 public void setTouchInterval(int interval) { 6905 mCurrentTouchInterval = interval; 6906 } 6907 6908 /** 6909 * Update our cache with updatedText. 6910 * @param updatedText The new text to put in our cache. 6911 */ 6912 /* package */ void updateCachedTextfield(String updatedText) { 6913 // Also place our generation number so that when we look at the cache 6914 // we recognize that it is up to date. 6915 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 6916 } 6917 6918 private native int nativeCacheHitFramePointer(); 6919 private native Rect nativeCacheHitNodeBounds(); 6920 private native int nativeCacheHitNodePointer(); 6921 /* package */ native void nativeClearCursor(); 6922 private native void nativeCreate(int ptr); 6923 private native int nativeCursorFramePointer(); 6924 private native Rect nativeCursorNodeBounds(); 6925 private native int nativeCursorNodePointer(); 6926 /* package */ native boolean nativeCursorMatchesFocus(); 6927 private native boolean nativeCursorIntersects(Rect visibleRect); 6928 private native boolean nativeCursorIsAnchor(); 6929 private native boolean nativeCursorIsTextInput(); 6930 private native Point nativeCursorPosition(); 6931 private native String nativeCursorText(); 6932 /** 6933 * Returns true if the native cursor node says it wants to handle key events 6934 * (ala plugins). This can only be called if mNativeClass is non-zero! 6935 */ 6936 private native boolean nativeCursorWantsKeyEvents(); 6937 private native void nativeDebugDump(); 6938 private native void nativeDestroy(); 6939 private native boolean nativeEvaluateLayersAnimations(); 6940 private native void nativeDrawExtras(Canvas canvas, int extra); 6941 private native void nativeDumpDisplayTree(String urlOrNull); 6942 private native int nativeFindAll(String findLower, String findUpper); 6943 private native void nativeFindNext(boolean forward); 6944 /* package */ native int nativeFocusCandidateFramePointer(); 6945 private native boolean nativeFocusCandidateIsPassword(); 6946 private native boolean nativeFocusCandidateIsRtlText(); 6947 private native boolean nativeFocusCandidateIsTextInput(); 6948 /* package */ native int nativeFocusCandidateMaxLength(); 6949 /* package */ native String nativeFocusCandidateName(); 6950 private native Rect nativeFocusCandidateNodeBounds(); 6951 private native int nativeFocusCandidatePointer(); 6952 private native String nativeFocusCandidateText(); 6953 private native int nativeFocusCandidateTextSize(); 6954 /** 6955 * Returns an integer corresponding to WebView.cpp::type. 6956 * See WebTextView.setType() 6957 */ 6958 private native int nativeFocusCandidateType(); 6959 private native boolean nativeFocusIsPlugin(); 6960 /* package */ native int nativeFocusNodePointer(); 6961 private native Rect nativeGetCursorRingBounds(); 6962 private native String nativeGetSelection(); 6963 private native boolean nativeHasCursorNode(); 6964 private native boolean nativeHasFocusNode(); 6965 private native void nativeHideCursor(); 6966 private native String nativeImageURI(int x, int y); 6967 private native void nativeInstrumentReport(); 6968 /* package */ native boolean nativeMoveCursorToNextTextInput(); 6969 // return true if the page has been scrolled 6970 private native boolean nativeMotionUp(int x, int y, int slop); 6971 // returns false if it handled the key 6972 private native boolean nativeMoveCursor(int keyCode, int count, 6973 boolean noScroll); 6974 private native int nativeMoveGeneration(); 6975 private native void nativeMoveSelection(int x, int y, 6976 boolean extendSelection); 6977 private native boolean nativePointInNavCache(int x, int y, int slop); 6978 // Like many other of our native methods, you must make sure that 6979 // mNativeClass is not null before calling this method. 6980 private native void nativeRecordButtons(boolean focused, 6981 boolean pressed, boolean invalidate); 6982 private native void nativeSelectBestAt(Rect rect); 6983 private native void nativeSetFindIsEmpty(); 6984 private native void nativeSetFindIsUp(boolean isUp); 6985 private native void nativeSetFollowedLink(boolean followed); 6986 private native void nativeSetHeightCanMeasure(boolean measure); 6987 private native void nativeSetRootLayer(int layer); 6988 private native void nativeSetSelectionPointer(boolean set, 6989 float scale, int x, int y, boolean extendSelection); 6990 private native void nativeSetSelectionRegion(boolean set); 6991 private native int nativeTextGeneration(); 6992 // Never call this version except by updateCachedTextfield(String) - 6993 // we always want to pass in our generation number. 6994 private native void nativeUpdateCachedTextfield(String updatedText, 6995 int generation); 6996 // return NO_LEFTEDGE means failure. 6997 private static final int NO_LEFTEDGE = -1; 6998 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 6999} 7000