WebView.java revision 2563ffb84fc1ef569c06a35aab413258deab6bfe
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.annotation.Widget; 20import android.app.AlertDialog; 21import android.content.Context; 22import android.content.DialogInterface; 23import android.content.Intent; 24import android.content.DialogInterface.OnCancelListener; 25import android.content.pm.PackageManager; 26import android.database.DataSetObserver; 27import android.graphics.Bitmap; 28import android.graphics.BitmapFactory; 29import android.graphics.BitmapShader; 30import android.graphics.Canvas; 31import android.graphics.Color; 32import android.graphics.Interpolator; 33import android.graphics.Paint; 34import android.graphics.Picture; 35import android.graphics.Point; 36import android.graphics.Rect; 37import android.graphics.Region; 38import android.graphics.Shader; 39import android.graphics.drawable.Drawable; 40import android.net.http.SslCertificate; 41import android.net.Uri; 42import android.os.Bundle; 43import android.os.Handler; 44import android.os.Message; 45import android.os.ServiceManager; 46import android.os.SystemClock; 47import android.text.IClipboard; 48import android.text.Selection; 49import android.text.Spannable; 50import android.util.AttributeSet; 51import android.util.EventLog; 52import android.util.Log; 53import android.util.TypedValue; 54import android.view.Gravity; 55import android.view.KeyEvent; 56import android.view.LayoutInflater; 57import android.view.MotionEvent; 58import android.view.ScaleGestureDetector; 59import android.view.SoundEffectConstants; 60import android.view.VelocityTracker; 61import android.view.View; 62import android.view.ViewConfiguration; 63import android.view.ViewGroup; 64import android.view.ViewTreeObserver; 65import android.view.animation.AlphaAnimation; 66import android.view.inputmethod.EditorInfo; 67import android.view.inputmethod.InputConnection; 68import android.view.inputmethod.InputMethodManager; 69import android.webkit.WebTextView.AutoCompleteAdapter; 70import android.webkit.WebViewCore.EventHub; 71import android.webkit.WebViewCore.TouchEventData; 72import android.widget.AbsoluteLayout; 73import android.widget.Adapter; 74import android.widget.AdapterView; 75import android.widget.ArrayAdapter; 76import android.widget.CheckedTextView; 77import android.widget.FrameLayout; 78import android.widget.LinearLayout; 79import android.widget.ListView; 80import android.widget.OverScroller; 81import android.widget.Toast; 82import android.widget.ZoomButtonsController; 83import android.widget.ZoomControls; 84import android.widget.AdapterView.OnItemClickListener; 85 86import java.io.File; 87import java.io.FileInputStream; 88import java.io.FileNotFoundException; 89import java.io.FileOutputStream; 90import java.io.IOException; 91import java.net.URLDecoder; 92import java.util.ArrayList; 93import java.util.List; 94import java.util.HashMap; 95import java.util.Map; 96import java.util.Set; 97 98import junit.framework.Assert; 99 100/** 101 * <p>A View that displays web pages. This class is the basis upon which you 102 * can roll your own web browser or simply display some online content within your Activity. 103 * It uses the WebKit rendering engine to display 104 * web pages and includes methods to navigate forward and backward 105 * through a history, zoom in and out, perform text searches and more.</p> 106 * <p>To enable the built-in zoom, set 107 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 108 * (introduced in API version 3). 109 * <p>Note that, in order for your Activity to access the Internet and load web pages 110 * in a WebView, you must add the <var>INTERNET</var> permissions to your 111 * Android Manifest file:</p> 112 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 113 * 114 * <p>This must be a child of the <code><manifest></code> element.</p> 115 * 116 * <h3>Basic usage</h3> 117 * 118 * <p>By default, a WebView provides no browser-like widgets, does not 119 * enable JavaScript and errors will be ignored. If your goal is only 120 * to display some HTML as a part of your UI, this is probably fine; 121 * the user won't need to interact with the web page beyond reading 122 * it, and the web page won't need to interact with the user. If you 123 * actually want a fully blown web browser, then you probably want to 124 * invoke the Browser application with your URL rather than show it 125 * with a WebView. See {@link android.content.Intent} for more information.</p> 126 * 127 * <pre class="prettyprint"> 128 * WebView webview = new WebView(this); 129 * setContentView(webview); 130 * 131 * // Simplest usage: note that an exception will NOT be thrown 132 * // if there is an error loading this page (see below). 133 * webview.loadUrl("http://slashdot.org/"); 134 * 135 * // Of course you can also load from any string: 136 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 137 * webview.loadData(summary, "text/html", "utf-8"); 138 * // ... although note that there are restrictions on what this HTML can do. 139 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 140 * </pre> 141 * 142 * <p>A WebView has several customization points where you can add your 143 * own behavior. These are:</p> 144 * 145 * <ul> 146 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 147 * This class is called when something that might impact a 148 * browser UI happens, for instance, progress updates and 149 * JavaScript alerts are sent here. 150 * </li> 151 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 152 * It will be called when things happen that impact the 153 * rendering of the content, eg, errors or form submissions. You 154 * can also intercept URL loading here.</li> 155 * <li>Via the {@link android.webkit.WebSettings} class, which contains 156 * miscellaneous configuration. </li> 157 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 158 * This lets you bind Java objects into the WebView so they can be 159 * controlled from the web pages JavaScript.</li> 160 * </ul> 161 * 162 * <p>Here's a more complicated example, showing error handling, 163 * settings, and progress notification:</p> 164 * 165 * <pre class="prettyprint"> 166 * // Let's display the progress in the activity title bar, like the 167 * // browser app does. 168 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 169 * 170 * webview.getSettings().setJavaScriptEnabled(true); 171 * 172 * final Activity activity = this; 173 * webview.setWebChromeClient(new WebChromeClient() { 174 * public void onProgressChanged(WebView view, int progress) { 175 * // Activities and WebViews measure progress with different scales. 176 * // The progress meter will automatically disappear when we reach 100% 177 * activity.setProgress(progress * 1000); 178 * } 179 * }); 180 * webview.setWebViewClient(new WebViewClient() { 181 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 182 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 183 * } 184 * }); 185 * 186 * webview.loadUrl("http://slashdot.org/"); 187 * </pre> 188 * 189 * <h3>Cookie and window management</h3> 190 * 191 * <p>For obvious security reasons, your application has its own 192 * cache, cookie store etc - it does not share the Browser 193 * applications data. Cookies are managed on a separate thread, so 194 * operations like index building don't block the UI 195 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 196 * if you want to use cookies in your application. 197 * </p> 198 * 199 * <p>By default, requests by the HTML to open new windows are 200 * ignored. This is true whether they be opened by JavaScript or by 201 * the target attribute on a link. You can customize your 202 * WebChromeClient to provide your own behaviour for opening multiple windows, 203 * and render them in whatever manner you want.</p> 204 * 205 * <p>Standard behavior for an Activity is to be destroyed and 206 * recreated when the devices orientation is changed. This will cause 207 * the WebView to reload the current page. If you don't want that, you 208 * can set your Activity to handle the orientation and keyboardHidden 209 * changes, and then just leave the WebView alone. It'll automatically 210 * re-orient itself as appropriate.</p> 211 */ 212@Widget 213public class WebView extends AbsoluteLayout 214 implements ViewTreeObserver.OnGlobalFocusChangeListener, 215 ViewGroup.OnHierarchyChangeListener { 216 217 // enable debug output for drag trackers 218 private static final boolean DEBUG_DRAG_TRACKER = false; 219 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 220 // the screen all-the-time. Good for profiling our drawing code 221 static private final boolean AUTO_REDRAW_HACK = false; 222 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 223 private boolean mAutoRedraw; 224 225 static final String LOGTAG = "webview"; 226 227 private static class ExtendedZoomControls extends FrameLayout { 228 public ExtendedZoomControls(Context context, AttributeSet attrs) { 229 super(context, attrs); 230 LayoutInflater inflater = (LayoutInflater) 231 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 232 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 233 mPlusMinusZoomControls = (ZoomControls) findViewById( 234 com.android.internal.R.id.zoomControls); 235 findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( 236 View.GONE); 237 } 238 239 public void show(boolean showZoom, boolean canZoomOut) { 240 mPlusMinusZoomControls.setVisibility( 241 showZoom ? View.VISIBLE : View.GONE); 242 fade(View.VISIBLE, 0.0f, 1.0f); 243 } 244 245 public void hide() { 246 fade(View.GONE, 1.0f, 0.0f); 247 } 248 249 private void fade(int visibility, float startAlpha, float endAlpha) { 250 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 251 anim.setDuration(500); 252 startAnimation(anim); 253 setVisibility(visibility); 254 } 255 256 public boolean hasFocus() { 257 return mPlusMinusZoomControls.hasFocus(); 258 } 259 260 public void setOnZoomInClickListener(OnClickListener listener) { 261 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 262 } 263 264 public void setOnZoomOutClickListener(OnClickListener listener) { 265 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 266 } 267 268 ZoomControls mPlusMinusZoomControls; 269 } 270 271 /** 272 * Transportation object for returning WebView across thread boundaries. 273 */ 274 public class WebViewTransport { 275 private WebView mWebview; 276 277 /** 278 * Set the WebView to the transportation object. 279 * @param webview The WebView to transport. 280 */ 281 public synchronized void setWebView(WebView webview) { 282 mWebview = webview; 283 } 284 285 /** 286 * Return the WebView object. 287 * @return WebView The transported WebView object. 288 */ 289 public synchronized WebView getWebView() { 290 return mWebview; 291 } 292 } 293 294 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 295 private final CallbackProxy mCallbackProxy; 296 297 private final WebViewDatabase mDatabase; 298 299 // SSL certificate for the main top-level page (if secure) 300 private SslCertificate mCertificate; 301 302 // Native WebView pointer that is 0 until the native object has been 303 // created. 304 private int mNativeClass; 305 // This would be final but it needs to be set to null when the WebView is 306 // destroyed. 307 private WebViewCore mWebViewCore; 308 // Handler for dispatching UI messages. 309 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 310 private WebTextView mWebTextView; 311 // Used to ignore changes to webkit text that arrives to the UI side after 312 // more key events. 313 private int mTextGeneration; 314 315 // Used by WebViewCore to create child views. 316 /* package */ final ViewManager mViewManager; 317 318 // Used to display in full screen mode 319 PluginFullScreenHolder mFullScreenHolder; 320 321 /** 322 * Position of the last touch event. 323 */ 324 private float mLastTouchX; 325 private float mLastTouchY; 326 327 /** 328 * Time of the last touch event. 329 */ 330 private long mLastTouchTime; 331 332 /** 333 * Time of the last time sending touch event to WebViewCore 334 */ 335 private long mLastSentTouchTime; 336 337 /** 338 * The minimum elapsed time before sending another ACTION_MOVE event to 339 * WebViewCore. This really should be tuned for each type of the devices. 340 * For example in Google Map api test case, it takes Dream device at least 341 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 342 * triggering the layout and drawing the picture. While the same process 343 * takes 60+ms on the current high speed device. If we make 344 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 345 * to WebViewCore queue and the real layout and draw events will be pushed 346 * to further, which slows down the refresh rate. Choose 50 to favor the 347 * current high speed devices. For Dream like devices, 100 is a better 348 * choice. Maybe make this in the buildspec later. 349 */ 350 private static final int TOUCH_SENT_INTERVAL = 50; 351 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 352 353 /** 354 * Helper class to get velocity for fling 355 */ 356 VelocityTracker mVelocityTracker; 357 private int mMaximumFling; 358 private float mLastVelocity; 359 private float mLastVelX; 360 private float mLastVelY; 361 362 /** 363 * Touch mode 364 */ 365 private int mTouchMode = TOUCH_DONE_MODE; 366 private static final int TOUCH_INIT_MODE = 1; 367 private static final int TOUCH_DRAG_START_MODE = 2; 368 private static final int TOUCH_DRAG_MODE = 3; 369 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 370 private static final int TOUCH_SHORTPRESS_MODE = 5; 371 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 372 private static final int TOUCH_DONE_MODE = 7; 373 private static final int TOUCH_SELECT_MODE = 8; 374 private static final int TOUCH_PINCH_DRAG = 9; 375 376 // Whether to forward the touch events to WebCore 377 private boolean mForwardTouchEvents = false; 378 379 // Whether to prevent default during touch. The initial value depends on 380 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 381 // for touch down. Otherwise UI will wait for the answer of the first 382 // confirmed move before taking over the control. 383 private static final int PREVENT_DEFAULT_NO = 0; 384 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 385 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 386 private static final int PREVENT_DEFAULT_YES = 3; 387 private static final int PREVENT_DEFAULT_IGNORE = 4; 388 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 389 390 // true when the touch movement exceeds the slop 391 private boolean mConfirmMove; 392 393 // if true, touch events will be first processed by WebCore, if prevent 394 // default is not set, the UI will continue handle them. 395 private boolean mDeferTouchProcess; 396 397 // to avoid interfering with the current touch events, track them 398 // separately. Currently no snapping or fling in the deferred process mode 399 private int mDeferTouchMode = TOUCH_DONE_MODE; 400 private float mLastDeferTouchX; 401 private float mLastDeferTouchY; 402 403 // To keep track of whether the current drag was initiated by a WebTextView, 404 // so that we know not to hide the cursor 405 boolean mDragFromTextInput; 406 407 // Whether or not to draw the cursor ring. 408 private boolean mDrawCursorRing = true; 409 410 // true if onPause has been called (and not onResume) 411 private boolean mIsPaused; 412 413 /** 414 * Customizable constant 415 */ 416 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 417 private int mTouchSlopSquare; 418 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 419 private int mDoubleTapSlopSquare; 420 // pre-computed density adjusted navigation slop 421 private int mNavSlop; 422 // This should be ViewConfiguration.getTapTimeout() 423 // But system time out is 100ms, which is too short for the browser. 424 // In the browser, if it switches out of tap too soon, jump tap won't work. 425 private static final int TAP_TIMEOUT = 200; 426 // This should be ViewConfiguration.getLongPressTimeout() 427 // But system time out is 500ms, which is too short for the browser. 428 // With a short timeout, it's difficult to treat trigger a short press. 429 private static final int LONG_PRESS_TIMEOUT = 1000; 430 // needed to avoid flinging after a pause of no movement 431 private static final int MIN_FLING_TIME = 250; 432 // draw unfiltered after drag is held without movement 433 private static final int MOTIONLESS_TIME = 100; 434 // The time that the Zoom Controls are visible before fading away 435 private static final long ZOOM_CONTROLS_TIMEOUT = 436 ViewConfiguration.getZoomControlsTimeout(); 437 // The amount of content to overlap between two screens when going through 438 // pages with the space bar, in pixels. 439 private static final int PAGE_SCROLL_OVERLAP = 24; 440 441 /** 442 * These prevent calling requestLayout if either dimension is fixed. This 443 * depends on the layout parameters and the measure specs. 444 */ 445 boolean mWidthCanMeasure; 446 boolean mHeightCanMeasure; 447 448 // Remember the last dimensions we sent to the native side so we can avoid 449 // sending the same dimensions more than once. 450 int mLastWidthSent; 451 int mLastHeightSent; 452 453 private int mContentWidth; // cache of value from WebViewCore 454 private int mContentHeight; // cache of value from WebViewCore 455 456 // Need to have the separate control for horizontal and vertical scrollbar 457 // style than the View's single scrollbar style 458 private boolean mOverlayHorizontalScrollbar = true; 459 private boolean mOverlayVerticalScrollbar = false; 460 461 // our standard speed. this way small distances will be traversed in less 462 // time than large distances, but we cap the duration, so that very large 463 // distances won't take too long to get there. 464 private static final int STD_SPEED = 480; // pixels per second 465 // time for the longest scroll animation 466 private static final int MAX_DURATION = 750; // milliseconds 467 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 468 private OverScroller mScroller; 469 private boolean mInOverScrollMode = false; 470 private static Paint mOverScrollBackground; 471 472 private boolean mWrapContent; 473 private static final int MOTIONLESS_FALSE = 0; 474 private static final int MOTIONLESS_PENDING = 1; 475 private static final int MOTIONLESS_TRUE = 2; 476 private int mHeldMotionless; 477 478 // whether support multi-touch 479 private boolean mSupportMultiTouch; 480 // use the framework's ScaleGestureDetector to handle multi-touch 481 private ScaleGestureDetector mScaleDetector; 482 483 // the anchor point in the document space where VIEW_SIZE_CHANGED should 484 // apply to 485 private int mAnchorX; 486 private int mAnchorY; 487 488 /* 489 * Private message ids 490 */ 491 private static final int REMEMBER_PASSWORD = 1; 492 private static final int NEVER_REMEMBER_PASSWORD = 2; 493 private static final int SWITCH_TO_SHORTPRESS = 3; 494 private static final int SWITCH_TO_LONGPRESS = 4; 495 private static final int RELEASE_SINGLE_TAP = 5; 496 private static final int REQUEST_FORM_DATA = 6; 497 private static final int RESUME_WEBCORE_PRIORITY = 7; 498 private static final int DRAG_HELD_MOTIONLESS = 8; 499 private static final int AWAKEN_SCROLL_BARS = 9; 500 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 501 502 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 503 private static final int LAST_PRIVATE_MSG_ID = PREVENT_DEFAULT_TIMEOUT; 504 505 /* 506 * Package message ids 507 */ 508 //! arg1=x, arg2=y 509 static final int SCROLL_TO_MSG_ID = 101; 510 static final int SCROLL_BY_MSG_ID = 102; 511 //! arg1=x, arg2=y 512 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 513 //! arg1=x, arg2=y 514 static final int SYNC_SCROLL_TO_MSG_ID = 104; 515 static final int NEW_PICTURE_MSG_ID = 105; 516 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 517 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 518 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 519 static final int UPDATE_ZOOM_RANGE = 109; 520 static final int MOVE_OUT_OF_PLUGIN = 110; 521 static final int CLEAR_TEXT_ENTRY = 111; 522 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 523 static final int SHOW_RECT_MSG_ID = 113; 524 static final int LONG_PRESS_CENTER = 114; 525 static final int PREVENT_TOUCH_ID = 115; 526 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 527 // obj=Rect in doc coordinates 528 static final int INVAL_RECT_MSG_ID = 117; 529 static final int REQUEST_KEYBOARD = 118; 530 static final int DO_MOTION_UP = 119; 531 static final int SHOW_FULLSCREEN = 120; 532 static final int HIDE_FULLSCREEN = 121; 533 static final int DOM_FOCUS_CHANGED = 122; 534 static final int IMMEDIATE_REPAINT_MSG_ID = 123; 535 static final int SET_ROOT_LAYER_MSG_ID = 124; 536 static final int RETURN_LABEL = 125; 537 static final int FIND_AGAIN = 126; 538 539 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 540 private static final int LAST_PACKAGE_MSG_ID = FIND_AGAIN; 541 542 static final String[] HandlerPrivateDebugString = { 543 "REMEMBER_PASSWORD", // = 1; 544 "NEVER_REMEMBER_PASSWORD", // = 2; 545 "SWITCH_TO_SHORTPRESS", // = 3; 546 "SWITCH_TO_LONGPRESS", // = 4; 547 "RELEASE_SINGLE_TAP", // = 5; 548 "REQUEST_FORM_DATA", // = 6; 549 "RESUME_WEBCORE_PRIORITY", // = 7; 550 "DRAG_HELD_MOTIONLESS", // = 8; 551 "AWAKEN_SCROLL_BARS", // = 9; 552 "PREVENT_DEFAULT_TIMEOUT" // = 10; 553 }; 554 555 static final String[] HandlerPackageDebugString = { 556 "SCROLL_TO_MSG_ID", // = 101; 557 "SCROLL_BY_MSG_ID", // = 102; 558 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 559 "SYNC_SCROLL_TO_MSG_ID", // = 104; 560 "NEW_PICTURE_MSG_ID", // = 105; 561 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 562 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 563 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 564 "UPDATE_ZOOM_RANGE", // = 109; 565 "MOVE_OUT_OF_PLUGIN", // = 110; 566 "CLEAR_TEXT_ENTRY", // = 111; 567 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 568 "SHOW_RECT_MSG_ID", // = 113; 569 "LONG_PRESS_CENTER", // = 114; 570 "PREVENT_TOUCH_ID", // = 115; 571 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 572 "INVAL_RECT_MSG_ID", // = 117; 573 "REQUEST_KEYBOARD", // = 118; 574 "DO_MOTION_UP", // = 119; 575 "SHOW_FULLSCREEN", // = 120; 576 "HIDE_FULLSCREEN", // = 121; 577 "DOM_FOCUS_CHANGED", // = 122; 578 "IMMEDIATE_REPAINT_MSG_ID", // = 123; 579 "SET_ROOT_LAYER_MSG_ID", // = 124; 580 "RETURN_LABEL", // = 125; 581 "FIND_AGAIN" // = 126; 582 }; 583 584 // If the site doesn't use the viewport meta tag to specify the viewport, 585 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 586 static final int DEFAULT_VIEWPORT_WIDTH = 800; 587 588 // normally we try to fit the content to the minimum preferred width 589 // calculated by the Webkit. To avoid the bad behavior when some site's 590 // minimum preferred width keeps growing when changing the viewport width or 591 // the minimum preferred width is huge, an upper limit is needed. 592 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 593 594 // default scale limit. Depending on the display density 595 private static float DEFAULT_MAX_ZOOM_SCALE; 596 private static float DEFAULT_MIN_ZOOM_SCALE; 597 // scale limit, which can be set through viewport meta tag in the web page 598 private float mMaxZoomScale; 599 private float mMinZoomScale; 600 private boolean mMinZoomScaleFixed = true; 601 602 // initial scale in percent. 0 means using default. 603 private int mInitialScaleInPercent = 0; 604 605 // while in the zoom overview mode, the page's width is fully fit to the 606 // current window. The page is alive, in another words, you can click to 607 // follow the links. Double tap will toggle between zoom overview mode and 608 // the last zoom scale. 609 boolean mInZoomOverview = false; 610 611 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 612 // engadget always have wider mContentWidth no matter what viewport size is. 613 int mZoomOverviewWidth = DEFAULT_VIEWPORT_WIDTH; 614 float mTextWrapScale; 615 616 // default scale. Depending on the display density. 617 static int DEFAULT_SCALE_PERCENT; 618 private float mDefaultScale; 619 620 private static float MINIMUM_SCALE_INCREMENT = 0.01f; 621 622 // set to true temporarily during ScaleGesture triggered zoom 623 private boolean mPreviewZoomOnly = false; 624 625 // computed scale and inverse, from mZoomWidth. 626 private float mActualScale; 627 private float mInvActualScale; 628 // if this is non-zero, it is used on drawing rather than mActualScale 629 private float mZoomScale; 630 private float mInvInitialZoomScale; 631 private float mInvFinalZoomScale; 632 private int mInitialScrollX; 633 private int mInitialScrollY; 634 private long mZoomStart; 635 private static final int ZOOM_ANIMATION_LENGTH = 500; 636 637 private boolean mUserScroll = false; 638 639 private int mSnapScrollMode = SNAP_NONE; 640 private static final int SNAP_NONE = 0; 641 private static final int SNAP_LOCK = 1; // not a separate state 642 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 643 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 644 private boolean mSnapPositive; 645 646 // keep these in sync with their counterparts in WebView.cpp 647 private static final int DRAW_EXTRAS_NONE = 0; 648 private static final int DRAW_EXTRAS_FIND = 1; 649 private static final int DRAW_EXTRAS_SELECTION = 2; 650 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 651 652 // Used to match key downs and key ups 653 private boolean mGotKeyDown; 654 655 /* package */ static boolean mLogEvent = true; 656 657 // for event log 658 private long mLastTouchUpTime = 0; 659 660 /** 661 * URI scheme for telephone number 662 */ 663 public static final String SCHEME_TEL = "tel:"; 664 /** 665 * URI scheme for email address 666 */ 667 public static final String SCHEME_MAILTO = "mailto:"; 668 /** 669 * URI scheme for map address 670 */ 671 public static final String SCHEME_GEO = "geo:0,0?q="; 672 673 private int mBackgroundColor = Color.WHITE; 674 675 // Used to notify listeners of a new picture. 676 private PictureListener mPictureListener; 677 /** 678 * Interface to listen for new pictures as they change. 679 */ 680 public interface PictureListener { 681 /** 682 * Notify the listener that the picture has changed. 683 * @param view The WebView that owns the picture. 684 * @param picture The new picture. 685 */ 686 public void onNewPicture(WebView view, Picture picture); 687 } 688 689 // FIXME: Want to make this public, but need to change the API file. 690 public /*static*/ class HitTestResult { 691 /** 692 * Default HitTestResult, where the target is unknown 693 */ 694 public static final int UNKNOWN_TYPE = 0; 695 /** 696 * HitTestResult for hitting a HTML::a tag 697 */ 698 public static final int ANCHOR_TYPE = 1; 699 /** 700 * HitTestResult for hitting a phone number 701 */ 702 public static final int PHONE_TYPE = 2; 703 /** 704 * HitTestResult for hitting a map address 705 */ 706 public static final int GEO_TYPE = 3; 707 /** 708 * HitTestResult for hitting an email address 709 */ 710 public static final int EMAIL_TYPE = 4; 711 /** 712 * HitTestResult for hitting an HTML::img tag 713 */ 714 public static final int IMAGE_TYPE = 5; 715 /** 716 * HitTestResult for hitting a HTML::a tag which contains HTML::img 717 */ 718 public static final int IMAGE_ANCHOR_TYPE = 6; 719 /** 720 * HitTestResult for hitting a HTML::a tag with src=http 721 */ 722 public static final int SRC_ANCHOR_TYPE = 7; 723 /** 724 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 725 */ 726 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 727 /** 728 * HitTestResult for hitting an edit text area 729 */ 730 public static final int EDIT_TEXT_TYPE = 9; 731 732 private int mType; 733 private String mExtra; 734 735 HitTestResult() { 736 mType = UNKNOWN_TYPE; 737 } 738 739 private void setType(int type) { 740 mType = type; 741 } 742 743 private void setExtra(String extra) { 744 mExtra = extra; 745 } 746 747 public int getType() { 748 return mType; 749 } 750 751 public String getExtra() { 752 return mExtra; 753 } 754 } 755 756 // The View containing the zoom controls 757 private ExtendedZoomControls mZoomControls; 758 private Runnable mZoomControlRunnable; 759 760 private ZoomButtonsController mZoomButtonsController; 761 762 // These keep track of the center point of the zoom. They are used to 763 // determine the point around which we should zoom. 764 private float mZoomCenterX; 765 private float mZoomCenterY; 766 767 private ZoomButtonsController.OnZoomListener mZoomListener = 768 new ZoomButtonsController.OnZoomListener() { 769 770 public void onVisibilityChanged(boolean visible) { 771 if (visible) { 772 switchOutDrawHistory(); 773 // Bring back the hidden zoom controls. 774 mZoomButtonsController.getZoomControls().setVisibility( 775 View.VISIBLE); 776 updateZoomButtonsEnabled(); 777 } 778 } 779 780 public void onZoom(boolean zoomIn) { 781 if (zoomIn) { 782 zoomIn(); 783 } else { 784 zoomOut(); 785 } 786 787 updateZoomButtonsEnabled(); 788 } 789 }; 790 791 /** 792 * Construct a new WebView with a Context object. 793 * @param context A Context object used to access application assets. 794 */ 795 public WebView(Context context) { 796 this(context, null); 797 } 798 799 /** 800 * Construct a new WebView with layout parameters. 801 * @param context A Context object used to access application assets. 802 * @param attrs An AttributeSet passed to our parent. 803 */ 804 public WebView(Context context, AttributeSet attrs) { 805 this(context, attrs, com.android.internal.R.attr.webViewStyle); 806 } 807 808 /** 809 * Construct a new WebView with layout parameters and a default style. 810 * @param context A Context object used to access application assets. 811 * @param attrs An AttributeSet passed to our parent. 812 * @param defStyle The default style resource ID. 813 */ 814 public WebView(Context context, AttributeSet attrs, int defStyle) { 815 this(context, attrs, defStyle, null); 816 } 817 818 /** 819 * Construct a new WebView with layout parameters, a default style and a set 820 * of custom Javscript interfaces to be added to the WebView at initialization 821 * time. This guarantees that these interfaces will be available when the JS 822 * context is initialized. 823 * @param context A Context object used to access application assets. 824 * @param attrs An AttributeSet passed to our parent. 825 * @param defStyle The default style resource ID. 826 * @param javascriptInterfaces is a Map of intareface names, as keys, and 827 * object implementing those interfaces, as values. 828 * @hide pending API council approval. 829 */ 830 protected WebView(Context context, AttributeSet attrs, int defStyle, 831 Map<String, Object> javascriptInterfaces) { 832 super(context, attrs, defStyle); 833 init(); 834 835 mCallbackProxy = new CallbackProxy(context, this); 836 mViewManager = new ViewManager(this); 837 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 838 mDatabase = WebViewDatabase.getInstance(context); 839 mScroller = new OverScroller(context); 840 841 mZoomButtonsController = new ZoomButtonsController(this); 842 mZoomButtonsController.setOnZoomListener(mZoomListener); 843 // ZoomButtonsController positions the buttons at the bottom, but in 844 // the middle. Change their layout parameters so they appear on the 845 // right. 846 View controls = mZoomButtonsController.getZoomControls(); 847 ViewGroup.LayoutParams params = controls.getLayoutParams(); 848 if (params instanceof FrameLayout.LayoutParams) { 849 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 850 params; 851 frameParams.gravity = Gravity.RIGHT; 852 } 853 updateMultiTouchSupport(context); 854 } 855 856 void updateMultiTouchSupport(Context context) { 857 WebSettings settings = getSettings(); 858 mSupportMultiTouch = context.getPackageManager().hasSystemFeature( 859 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 860 && settings.supportZoom() && settings.getBuiltInZoomControls(); 861 if (mSupportMultiTouch && (mScaleDetector == null)) { 862 mScaleDetector = new ScaleGestureDetector(context, 863 new ScaleDetectorListener()); 864 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 865 mScaleDetector = null; 866 } 867 } 868 869 private void updateZoomButtonsEnabled() { 870 boolean canZoomIn = mActualScale < mMaxZoomScale; 871 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 872 if (!canZoomIn && !canZoomOut) { 873 // Hide the zoom in and out buttons, as well as the fit to page 874 // button, if the page cannot zoom 875 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 876 } else { 877 // Set each one individually, as a page may be able to zoom in 878 // or out. 879 mZoomButtonsController.setZoomInEnabled(canZoomIn); 880 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 881 } 882 } 883 884 private void init() { 885 setWillNotDraw(false); 886 setFocusable(true); 887 setFocusableInTouchMode(true); 888 setClickable(true); 889 setLongClickable(true); 890 891 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 892 int slop = configuration.getScaledTouchSlop(); 893 mTouchSlopSquare = slop * slop; 894 mMinLockSnapReverseDistance = slop; 895 slop = configuration.getScaledDoubleTapSlop(); 896 mDoubleTapSlopSquare = slop * slop; 897 final float density = getContext().getResources().getDisplayMetrics().density; 898 // use one line height, 16 based on our current default font, for how 899 // far we allow a touch be away from the edge of a link 900 mNavSlop = (int) (16 * density); 901 // density adjusted scale factors 902 DEFAULT_SCALE_PERCENT = (int) (100 * density); 903 mDefaultScale = density; 904 mActualScale = density; 905 mInvActualScale = 1 / density; 906 mTextWrapScale = density; 907 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 908 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 909 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 910 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 911 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 912 } 913 914 /* package */void updateDefaultZoomDensity(int zoomDensity) { 915 final float density = getContext().getResources().getDisplayMetrics().density 916 * 100 / zoomDensity; 917 if (Math.abs(density - mDefaultScale) > 0.01) { 918 float scaleFactor = density / mDefaultScale; 919 // adjust the limits 920 mNavSlop = (int) (16 * density); 921 DEFAULT_SCALE_PERCENT = (int) (100 * density); 922 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 923 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 924 mDefaultScale = density; 925 mMaxZoomScale *= scaleFactor; 926 mMinZoomScale *= scaleFactor; 927 setNewZoomScale(mActualScale * scaleFactor, true, false); 928 } 929 } 930 931 /* package */ boolean onSavePassword(String schemePlusHost, String username, 932 String password, final Message resumeMsg) { 933 boolean rVal = false; 934 if (resumeMsg == null) { 935 // null resumeMsg implies saving password silently 936 mDatabase.setUsernamePassword(schemePlusHost, username, password); 937 } else { 938 final Message remember = mPrivateHandler.obtainMessage( 939 REMEMBER_PASSWORD); 940 remember.getData().putString("host", schemePlusHost); 941 remember.getData().putString("username", username); 942 remember.getData().putString("password", password); 943 remember.obj = resumeMsg; 944 945 final Message neverRemember = mPrivateHandler.obtainMessage( 946 NEVER_REMEMBER_PASSWORD); 947 neverRemember.getData().putString("host", schemePlusHost); 948 neverRemember.getData().putString("username", username); 949 neverRemember.getData().putString("password", password); 950 neverRemember.obj = resumeMsg; 951 952 new AlertDialog.Builder(getContext()) 953 .setTitle(com.android.internal.R.string.save_password_label) 954 .setMessage(com.android.internal.R.string.save_password_message) 955 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 956 new DialogInterface.OnClickListener() { 957 public void onClick(DialogInterface dialog, int which) { 958 resumeMsg.sendToTarget(); 959 } 960 }) 961 .setNeutralButton(com.android.internal.R.string.save_password_remember, 962 new DialogInterface.OnClickListener() { 963 public void onClick(DialogInterface dialog, int which) { 964 remember.sendToTarget(); 965 } 966 }) 967 .setNegativeButton(com.android.internal.R.string.save_password_never, 968 new DialogInterface.OnClickListener() { 969 public void onClick(DialogInterface dialog, int which) { 970 neverRemember.sendToTarget(); 971 } 972 }) 973 .setOnCancelListener(new OnCancelListener() { 974 public void onCancel(DialogInterface dialog) { 975 resumeMsg.sendToTarget(); 976 } 977 }).show(); 978 // Return true so that WebViewCore will pause while the dialog is 979 // up. 980 rVal = true; 981 } 982 return rVal; 983 } 984 985 @Override 986 public void setScrollBarStyle(int style) { 987 if (style == View.SCROLLBARS_INSIDE_INSET 988 || style == View.SCROLLBARS_OUTSIDE_INSET) { 989 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 990 } else { 991 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 992 } 993 super.setScrollBarStyle(style); 994 } 995 996 /** 997 * Specify whether the horizontal scrollbar has overlay style. 998 * @param overlay TRUE if horizontal scrollbar should have overlay style. 999 */ 1000 public void setHorizontalScrollbarOverlay(boolean overlay) { 1001 mOverlayHorizontalScrollbar = overlay; 1002 } 1003 1004 /** 1005 * Specify whether the vertical scrollbar has overlay style. 1006 * @param overlay TRUE if vertical scrollbar should have overlay style. 1007 */ 1008 public void setVerticalScrollbarOverlay(boolean overlay) { 1009 mOverlayVerticalScrollbar = overlay; 1010 } 1011 1012 /** 1013 * Return whether horizontal scrollbar has overlay style 1014 * @return TRUE if horizontal scrollbar has overlay style. 1015 */ 1016 public boolean overlayHorizontalScrollbar() { 1017 return mOverlayHorizontalScrollbar; 1018 } 1019 1020 /** 1021 * Return whether vertical scrollbar has overlay style 1022 * @return TRUE if vertical scrollbar has overlay style. 1023 */ 1024 public boolean overlayVerticalScrollbar() { 1025 return mOverlayVerticalScrollbar; 1026 } 1027 1028 /* 1029 * Return the width of the view where the content of WebView should render 1030 * to. 1031 * Note: this can be called from WebCoreThread. 1032 */ 1033 /* package */ int getViewWidth() { 1034 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1035 return getWidth(); 1036 } else { 1037 return getWidth() - getVerticalScrollbarWidth(); 1038 } 1039 } 1040 1041 /* 1042 * returns the height of the titlebarview (if any). Does not care about 1043 * scrolling 1044 */ 1045 private int getTitleHeight() { 1046 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1047 } 1048 1049 /* 1050 * Return the amount of the titlebarview (if any) that is visible 1051 */ 1052 private int getVisibleTitleHeight() { 1053 // need to restrict mScrollY due to over scroll 1054 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1055 } 1056 1057 /* 1058 * Return the height of the view where the content of WebView should render 1059 * to. Note that this excludes mTitleBar, if there is one. 1060 * Note: this can be called from WebCoreThread. 1061 */ 1062 /* package */ int getViewHeight() { 1063 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1064 } 1065 1066 private int getViewHeightWithTitle() { 1067 int height = getHeight(); 1068 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1069 height -= getHorizontalScrollbarHeight(); 1070 } 1071 return height; 1072 } 1073 1074 /** 1075 * @return The SSL certificate for the main top-level page or null if 1076 * there is no certificate (the site is not secure). 1077 */ 1078 public SslCertificate getCertificate() { 1079 return mCertificate; 1080 } 1081 1082 /** 1083 * Sets the SSL certificate for the main top-level page. 1084 */ 1085 public void setCertificate(SslCertificate certificate) { 1086 // here, the certificate can be null (if the site is not secure) 1087 mCertificate = certificate; 1088 } 1089 1090 //------------------------------------------------------------------------- 1091 // Methods called by activity 1092 //------------------------------------------------------------------------- 1093 1094 /** 1095 * Save the username and password for a particular host in the WebView's 1096 * internal database. 1097 * @param host The host that required the credentials. 1098 * @param username The username for the given host. 1099 * @param password The password for the given host. 1100 */ 1101 public void savePassword(String host, String username, String password) { 1102 mDatabase.setUsernamePassword(host, username, password); 1103 } 1104 1105 /** 1106 * Set the HTTP authentication credentials for a given host and realm. 1107 * 1108 * @param host The host for the credentials. 1109 * @param realm The realm for the credentials. 1110 * @param username The username for the password. If it is null, it means 1111 * password can't be saved. 1112 * @param password The password 1113 */ 1114 public void setHttpAuthUsernamePassword(String host, String realm, 1115 String username, String password) { 1116 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1117 } 1118 1119 /** 1120 * Retrieve the HTTP authentication username and password for a given 1121 * host & realm pair 1122 * 1123 * @param host The host for which the credentials apply. 1124 * @param realm The realm for which the credentials apply. 1125 * @return String[] if found, String[0] is username, which can be null and 1126 * String[1] is password. Return null if it can't find anything. 1127 */ 1128 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1129 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1130 } 1131 1132 /** 1133 * Destroy the internal state of the WebView. This method should be called 1134 * after the WebView has been removed from the view system. No other 1135 * methods may be called on a WebView after destroy. 1136 */ 1137 public void destroy() { 1138 clearTextEntry(false); 1139 if (mWebViewCore != null) { 1140 // Set the handlers to null before destroying WebViewCore so no 1141 // more messages will be posted. 1142 mCallbackProxy.setWebViewClient(null); 1143 mCallbackProxy.setWebChromeClient(null); 1144 // Tell WebViewCore to destroy itself 1145 synchronized (this) { 1146 WebViewCore webViewCore = mWebViewCore; 1147 mWebViewCore = null; // prevent using partial webViewCore 1148 webViewCore.destroy(); 1149 } 1150 // Remove any pending messages that might not be serviced yet. 1151 mPrivateHandler.removeCallbacksAndMessages(null); 1152 mCallbackProxy.removeCallbacksAndMessages(null); 1153 // Wake up the WebCore thread just in case it is waiting for a 1154 // javascript dialog. 1155 synchronized (mCallbackProxy) { 1156 mCallbackProxy.notify(); 1157 } 1158 } 1159 if (mNativeClass != 0) { 1160 nativeDestroy(); 1161 mNativeClass = 0; 1162 } 1163 } 1164 1165 /** 1166 * Enables platform notifications of data state and proxy changes. 1167 */ 1168 public static void enablePlatformNotifications() { 1169 Network.enablePlatformNotifications(); 1170 } 1171 1172 /** 1173 * If platform notifications are enabled, this should be called 1174 * from the Activity's onPause() or onStop(). 1175 */ 1176 public static void disablePlatformNotifications() { 1177 Network.disablePlatformNotifications(); 1178 } 1179 1180 /** 1181 * Sets JavaScript engine flags. 1182 * 1183 * @param flags JS engine flags in a String 1184 * 1185 * @hide pending API solidification 1186 */ 1187 public void setJsFlags(String flags) { 1188 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1189 } 1190 1191 /** 1192 * Inform WebView of the network state. This is used to set 1193 * the javascript property window.navigator.isOnline and 1194 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1195 * @param networkUp boolean indicating if network is available 1196 */ 1197 public void setNetworkAvailable(boolean networkUp) { 1198 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1199 networkUp ? 1 : 0, 0); 1200 } 1201 1202 /** 1203 * Inform WebView about the current network type. 1204 * {@hide} 1205 */ 1206 public void setNetworkType(String type, String subtype) { 1207 Map<String, String> map = new HashMap<String, String>(); 1208 map.put("type", type); 1209 map.put("subtype", subtype); 1210 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1211 } 1212 /** 1213 * Save the state of this WebView used in 1214 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1215 * method no longer stores the display data for this WebView. The previous 1216 * behavior could potentially leak files if {@link #restoreState} was never 1217 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1218 * and restoring the display data. 1219 * @param outState The Bundle to store the WebView state. 1220 * @return The same copy of the back/forward list used to save the state. If 1221 * saveState fails, the returned list will be null. 1222 * @see #savePicture 1223 * @see #restorePicture 1224 */ 1225 public WebBackForwardList saveState(Bundle outState) { 1226 if (outState == null) { 1227 return null; 1228 } 1229 // We grab a copy of the back/forward list because a client of WebView 1230 // may have invalidated the history list by calling clearHistory. 1231 WebBackForwardList list = copyBackForwardList(); 1232 final int currentIndex = list.getCurrentIndex(); 1233 final int size = list.getSize(); 1234 // We should fail saving the state if the list is empty or the index is 1235 // not in a valid range. 1236 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1237 return null; 1238 } 1239 outState.putInt("index", currentIndex); 1240 // FIXME: This should just be a byte[][] instead of ArrayList but 1241 // Parcel.java does not have the code to handle multi-dimensional 1242 // arrays. 1243 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1244 for (int i = 0; i < size; i++) { 1245 WebHistoryItem item = list.getItemAtIndex(i); 1246 if (null == item) { 1247 // FIXME: this shouldn't happen 1248 // need to determine how item got set to null 1249 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1250 return null; 1251 } 1252 byte[] data = item.getFlattenedData(); 1253 if (data == null) { 1254 // It would be very odd to not have any data for a given history 1255 // item. And we will fail to rebuild the history list without 1256 // flattened data. 1257 return null; 1258 } 1259 history.add(data); 1260 } 1261 outState.putSerializable("history", history); 1262 if (mCertificate != null) { 1263 outState.putBundle("certificate", 1264 SslCertificate.saveState(mCertificate)); 1265 } 1266 return list; 1267 } 1268 1269 /** 1270 * Save the current display data to the Bundle given. Used in conjunction 1271 * with {@link #saveState}. 1272 * @param b A Bundle to store the display data. 1273 * @param dest The file to store the serialized picture data. Will be 1274 * overwritten with this WebView's picture data. 1275 * @return True if the picture was successfully saved. 1276 */ 1277 public boolean savePicture(Bundle b, File dest) { 1278 if (dest == null || b == null) { 1279 return false; 1280 } 1281 final Picture p = capturePicture(); 1282 try { 1283 final FileOutputStream out = new FileOutputStream(dest); 1284 p.writeToStream(out); 1285 out.close(); 1286 // now update the bundle 1287 b.putInt("scrollX", mScrollX); 1288 b.putInt("scrollY", mScrollY); 1289 b.putFloat("scale", mActualScale); 1290 b.putFloat("textwrapScale", mTextWrapScale); 1291 b.putBoolean("overview", mInZoomOverview); 1292 return true; 1293 } catch (FileNotFoundException e){ 1294 e.printStackTrace(); 1295 } catch (IOException e) { 1296 e.printStackTrace(); 1297 } catch (RuntimeException e) { 1298 e.printStackTrace(); 1299 } 1300 return false; 1301 } 1302 1303 /** 1304 * Restore the display data that was save in {@link #savePicture}. Used in 1305 * conjunction with {@link #restoreState}. 1306 * @param b A Bundle containing the saved display data. 1307 * @param src The file where the picture data was stored. 1308 * @return True if the picture was successfully restored. 1309 */ 1310 public boolean restorePicture(Bundle b, File src) { 1311 if (src == null || b == null) { 1312 return false; 1313 } 1314 if (src.exists()) { 1315 Picture p = null; 1316 try { 1317 final FileInputStream in = new FileInputStream(src); 1318 p = Picture.createFromStream(in); 1319 in.close(); 1320 } catch (FileNotFoundException e){ 1321 e.printStackTrace(); 1322 } catch (RuntimeException e) { 1323 e.printStackTrace(); 1324 } catch (IOException e) { 1325 e.printStackTrace(); 1326 } 1327 if (p != null) { 1328 int sx = b.getInt("scrollX", 0); 1329 int sy = b.getInt("scrollY", 0); 1330 float scale = b.getFloat("scale", 1.0f); 1331 mDrawHistory = true; 1332 mHistoryPicture = p; 1333 mScrollX = sx; 1334 mScrollY = sy; 1335 mHistoryWidth = Math.round(p.getWidth() * scale); 1336 mHistoryHeight = Math.round(p.getHeight() * scale); 1337 // as getWidth() / getHeight() of the view are not 1338 // available yet, set up mActualScale, so that when 1339 // onSizeChanged() is called, the rest will be set 1340 // correctly 1341 mActualScale = scale; 1342 mInvActualScale = 1 / scale; 1343 mTextWrapScale = b.getFloat("textwrapScale", scale); 1344 mInZoomOverview = b.getBoolean("overview"); 1345 invalidate(); 1346 return true; 1347 } 1348 } 1349 return false; 1350 } 1351 1352 /** 1353 * Restore the state of this WebView from the given map used in 1354 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1355 * be called to restore the state of the WebView before using the object. If 1356 * it is called after the WebView has had a chance to build state (load 1357 * pages, create a back/forward list, etc.) there may be undesirable 1358 * side-effects. Please note that this method no longer restores the 1359 * display data for this WebView. See {@link #savePicture} and {@link 1360 * #restorePicture} for saving and restoring the display data. 1361 * @param inState The incoming Bundle of state. 1362 * @return The restored back/forward list or null if restoreState failed. 1363 * @see #savePicture 1364 * @see #restorePicture 1365 */ 1366 public WebBackForwardList restoreState(Bundle inState) { 1367 WebBackForwardList returnList = null; 1368 if (inState == null) { 1369 return returnList; 1370 } 1371 if (inState.containsKey("index") && inState.containsKey("history")) { 1372 mCertificate = SslCertificate.restoreState( 1373 inState.getBundle("certificate")); 1374 1375 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1376 final int index = inState.getInt("index"); 1377 // We can't use a clone of the list because we need to modify the 1378 // shared copy, so synchronize instead to prevent concurrent 1379 // modifications. 1380 synchronized (list) { 1381 final List<byte[]> history = 1382 (List<byte[]>) inState.getSerializable("history"); 1383 final int size = history.size(); 1384 // Check the index bounds so we don't crash in native code while 1385 // restoring the history index. 1386 if (index < 0 || index >= size) { 1387 return null; 1388 } 1389 for (int i = 0; i < size; i++) { 1390 byte[] data = history.remove(0); 1391 if (data == null) { 1392 // If we somehow have null data, we cannot reconstruct 1393 // the item and thus our history list cannot be rebuilt. 1394 return null; 1395 } 1396 WebHistoryItem item = new WebHistoryItem(data); 1397 list.addHistoryItem(item); 1398 } 1399 // Grab the most recent copy to return to the caller. 1400 returnList = copyBackForwardList(); 1401 // Update the copy to have the correct index. 1402 returnList.setCurrentIndex(index); 1403 } 1404 // Remove all pending messages because we are restoring previous 1405 // state. 1406 mWebViewCore.removeMessages(); 1407 // Send a restore state message. 1408 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1409 } 1410 return returnList; 1411 } 1412 1413 /** 1414 * Load the given url with the extra headers. 1415 * @param url The url of the resource to load. 1416 * @param extraHeaders The extra headers sent with this url. This should not 1417 * include the common headers like "user-agent". If it does, it 1418 * will be replaced by the intrinsic value of the WebView. 1419 */ 1420 public void loadUrl(String url, Map<String, String> extraHeaders) { 1421 switchOutDrawHistory(); 1422 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1423 arg.mUrl = url; 1424 arg.mExtraHeaders = extraHeaders; 1425 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1426 clearTextEntry(false); 1427 } 1428 1429 /** 1430 * Load the given url. 1431 * @param url The url of the resource to load. 1432 */ 1433 public void loadUrl(String url) { 1434 if (url == null) { 1435 return; 1436 } 1437 loadUrl(url, null); 1438 } 1439 1440 /** 1441 * Load the url with postData using "POST" method into the WebView. If url 1442 * is not a network url, it will be loaded with {link 1443 * {@link #loadUrl(String)} instead. 1444 * 1445 * @param url The url of the resource to load. 1446 * @param postData The data will be passed to "POST" request. 1447 */ 1448 public void postUrl(String url, byte[] postData) { 1449 if (URLUtil.isNetworkUrl(url)) { 1450 switchOutDrawHistory(); 1451 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1452 arg.mUrl = url; 1453 arg.mPostData = postData; 1454 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1455 clearTextEntry(false); 1456 } else { 1457 loadUrl(url); 1458 } 1459 } 1460 1461 /** 1462 * Load the given data into the WebView. This will load the data into 1463 * WebView using the data: scheme. Content loaded through this mechanism 1464 * does not have the ability to load content from the network. 1465 * @param data A String of data in the given encoding. 1466 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1467 * @param encoding The encoding of the data. i.e. utf-8, base64 1468 */ 1469 public void loadData(String data, String mimeType, String encoding) { 1470 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1471 } 1472 1473 /** 1474 * Load the given data into the WebView, use the provided URL as the base 1475 * URL for the content. The base URL is the URL that represents the page 1476 * that is loaded through this interface. As such, it is used for the 1477 * history entry and to resolve any relative URLs. The failUrl is used if 1478 * browser fails to load the data provided. If it is empty or null, and the 1479 * load fails, then no history entry is created. 1480 * <p> 1481 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1482 * files through "file:///android_asset/" for the sub resources is more 1483 * restricted. If you provide null or empty string as baseUrl, you won't be 1484 * able to access asset files. If the baseUrl is anything other than 1485 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1486 * sub resources. 1487 * 1488 * @param baseUrl Url to resolve relative paths with, if null defaults to 1489 * "about:blank" 1490 * @param data A String of data in the given encoding. 1491 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1492 * defaults to "text/html" 1493 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1494 * @param failUrl URL to use if the content fails to load or null. 1495 */ 1496 public void loadDataWithBaseURL(String baseUrl, String data, 1497 String mimeType, String encoding, String failUrl) { 1498 1499 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1500 loadData(data, mimeType, encoding); 1501 return; 1502 } 1503 switchOutDrawHistory(); 1504 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1505 arg.mBaseUrl = baseUrl; 1506 arg.mData = data; 1507 arg.mMimeType = mimeType; 1508 arg.mEncoding = encoding; 1509 arg.mFailUrl = failUrl; 1510 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1511 clearTextEntry(false); 1512 } 1513 1514 /** 1515 * Stop the current load. 1516 */ 1517 public void stopLoading() { 1518 // TODO: should we clear all the messages in the queue before sending 1519 // STOP_LOADING? 1520 switchOutDrawHistory(); 1521 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1522 } 1523 1524 /** 1525 * Reload the current url. 1526 */ 1527 public void reload() { 1528 clearTextEntry(false); 1529 switchOutDrawHistory(); 1530 mWebViewCore.sendMessage(EventHub.RELOAD); 1531 } 1532 1533 /** 1534 * Return true if this WebView has a back history item. 1535 * @return True iff this WebView has a back history item. 1536 */ 1537 public boolean canGoBack() { 1538 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1539 synchronized (l) { 1540 if (l.getClearPending()) { 1541 return false; 1542 } else { 1543 return l.getCurrentIndex() > 0; 1544 } 1545 } 1546 } 1547 1548 /** 1549 * Go back in the history of this WebView. 1550 */ 1551 public void goBack() { 1552 goBackOrForward(-1); 1553 } 1554 1555 /** 1556 * Return true if this WebView has a forward history item. 1557 * @return True iff this Webview has a forward history item. 1558 */ 1559 public boolean canGoForward() { 1560 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1561 synchronized (l) { 1562 if (l.getClearPending()) { 1563 return false; 1564 } else { 1565 return l.getCurrentIndex() < l.getSize() - 1; 1566 } 1567 } 1568 } 1569 1570 /** 1571 * Go forward in the history of this WebView. 1572 */ 1573 public void goForward() { 1574 goBackOrForward(1); 1575 } 1576 1577 /** 1578 * Return true if the page can go back or forward the given 1579 * number of steps. 1580 * @param steps The negative or positive number of steps to move the 1581 * history. 1582 */ 1583 public boolean canGoBackOrForward(int steps) { 1584 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1585 synchronized (l) { 1586 if (l.getClearPending()) { 1587 return false; 1588 } else { 1589 int newIndex = l.getCurrentIndex() + steps; 1590 return newIndex >= 0 && newIndex < l.getSize(); 1591 } 1592 } 1593 } 1594 1595 /** 1596 * Go to the history item that is the number of steps away from 1597 * the current item. Steps is negative if backward and positive 1598 * if forward. 1599 * @param steps The number of steps to take back or forward in the back 1600 * forward list. 1601 */ 1602 public void goBackOrForward(int steps) { 1603 goBackOrForward(steps, false); 1604 } 1605 1606 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1607 // every time we go back or forward, we want to reset the 1608 // WebView certificate: 1609 // if the new site is secure, we will reload it and get a 1610 // new certificate set; 1611 // if the new site is not secure, the certificate must be 1612 // null, and that will be the case 1613 mCertificate = null; 1614 if (steps != 0) { 1615 clearTextEntry(false); 1616 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1617 ignoreSnapshot ? 1 : 0); 1618 } 1619 } 1620 1621 private boolean extendScroll(int y) { 1622 int finalY = mScroller.getFinalY(); 1623 int newY = pinLocY(finalY + y); 1624 if (newY == finalY) return false; 1625 mScroller.setFinalY(newY); 1626 mScroller.extendDuration(computeDuration(0, y)); 1627 return true; 1628 } 1629 1630 /** 1631 * Scroll the contents of the view up by half the view size 1632 * @param top true to jump to the top of the page 1633 * @return true if the page was scrolled 1634 */ 1635 public boolean pageUp(boolean top) { 1636 if (mNativeClass == 0) { 1637 return false; 1638 } 1639 nativeClearCursor(); // start next trackball movement from page edge 1640 if (top) { 1641 // go to the top of the document 1642 return pinScrollTo(mScrollX, 0, true, 0); 1643 } 1644 // Page up 1645 int h = getHeight(); 1646 int y; 1647 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1648 y = -h + PAGE_SCROLL_OVERLAP; 1649 } else { 1650 y = -h / 2; 1651 } 1652 mUserScroll = true; 1653 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1654 : extendScroll(y); 1655 } 1656 1657 /** 1658 * Scroll the contents of the view down by half the page size 1659 * @param bottom true to jump to bottom of page 1660 * @return true if the page was scrolled 1661 */ 1662 public boolean pageDown(boolean bottom) { 1663 if (mNativeClass == 0) { 1664 return false; 1665 } 1666 nativeClearCursor(); // start next trackball movement from page edge 1667 if (bottom) { 1668 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1669 } 1670 // Page down. 1671 int h = getHeight(); 1672 int y; 1673 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1674 y = h - PAGE_SCROLL_OVERLAP; 1675 } else { 1676 y = h / 2; 1677 } 1678 mUserScroll = true; 1679 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1680 : extendScroll(y); 1681 } 1682 1683 /** 1684 * Clear the view so that onDraw() will draw nothing but white background, 1685 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1686 */ 1687 public void clearView() { 1688 mContentWidth = 0; 1689 mContentHeight = 0; 1690 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1691 } 1692 1693 /** 1694 * Return a new picture that captures the current display of the webview. 1695 * This is a copy of the display, and will be unaffected if the webview 1696 * later loads a different URL. 1697 * 1698 * @return a picture containing the current contents of the view. Note this 1699 * picture is of the entire document, and is not restricted to the 1700 * bounds of the view. 1701 */ 1702 public Picture capturePicture() { 1703 if (null == mWebViewCore) return null; // check for out of memory tab 1704 return mWebViewCore.copyContentPicture(); 1705 } 1706 1707 /** 1708 * Return true if the browser is displaying a TextView for text input. 1709 */ 1710 private boolean inEditingMode() { 1711 return mWebTextView != null && mWebTextView.getParent() != null 1712 && mWebTextView.hasFocus(); 1713 } 1714 1715 /** 1716 * Remove the WebTextView. 1717 * @param disableFocusController If true, send a message to webkit 1718 * disabling the focus controller, so the caret stops blinking. 1719 */ 1720 private void clearTextEntry(boolean disableFocusController) { 1721 if (inEditingMode()) { 1722 mWebTextView.remove(); 1723 if (disableFocusController) { 1724 setFocusControllerInactive(); 1725 } 1726 } 1727 } 1728 1729 /** 1730 * Return the current scale of the WebView 1731 * @return The current scale. 1732 */ 1733 public float getScale() { 1734 return mActualScale; 1735 } 1736 1737 /** 1738 * Set the initial scale for the WebView. 0 means default. If 1739 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1740 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1741 * WebView starts will this value as initial scale. 1742 * 1743 * @param scaleInPercent The initial scale in percent. 1744 */ 1745 public void setInitialScale(int scaleInPercent) { 1746 mInitialScaleInPercent = scaleInPercent; 1747 } 1748 1749 /** 1750 * Invoke the graphical zoom picker widget for this WebView. This will 1751 * result in the zoom widget appearing on the screen to control the zoom 1752 * level of this WebView. 1753 */ 1754 public void invokeZoomPicker() { 1755 if (!getSettings().supportZoom()) { 1756 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1757 return; 1758 } 1759 clearTextEntry(false); 1760 if (getSettings().getBuiltInZoomControls()) { 1761 mZoomButtonsController.setVisible(true); 1762 } else { 1763 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1764 mPrivateHandler.postDelayed(mZoomControlRunnable, 1765 ZOOM_CONTROLS_TIMEOUT); 1766 } 1767 } 1768 1769 /** 1770 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1771 * is found and the anchor has a non-javascript url, the HitTestResult type 1772 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1773 * anchor does not have a url or if it is a javascript url, the type will 1774 * be UNKNOWN_TYPE and the url has to be retrieved through 1775 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1776 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1777 * the "extra" field. A type of 1778 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1779 * a child node. If a phone number is found, the HitTestResult type is set 1780 * to PHONE_TYPE and the phone number is set in the "extra" field of 1781 * HitTestResult. If a map address is found, the HitTestResult type is set 1782 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1783 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1784 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1785 * HitTestResult type is set to UNKNOWN_TYPE. 1786 */ 1787 public HitTestResult getHitTestResult() { 1788 if (mNativeClass == 0) { 1789 return null; 1790 } 1791 1792 HitTestResult result = new HitTestResult(); 1793 if (nativeHasCursorNode()) { 1794 if (nativeCursorIsTextInput()) { 1795 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1796 } else { 1797 String text = nativeCursorText(); 1798 if (text != null) { 1799 if (text.startsWith(SCHEME_TEL)) { 1800 result.setType(HitTestResult.PHONE_TYPE); 1801 result.setExtra(text.substring(SCHEME_TEL.length())); 1802 } else if (text.startsWith(SCHEME_MAILTO)) { 1803 result.setType(HitTestResult.EMAIL_TYPE); 1804 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1805 } else if (text.startsWith(SCHEME_GEO)) { 1806 result.setType(HitTestResult.GEO_TYPE); 1807 result.setExtra(URLDecoder.decode(text 1808 .substring(SCHEME_GEO.length()))); 1809 } else if (nativeCursorIsAnchor()) { 1810 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1811 result.setExtra(text); 1812 } 1813 } 1814 } 1815 } 1816 int type = result.getType(); 1817 if (type == HitTestResult.UNKNOWN_TYPE 1818 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1819 // Now check to see if it is an image. 1820 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1821 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1822 String text = nativeImageURI(contentX, contentY); 1823 if (text != null) { 1824 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1825 HitTestResult.IMAGE_TYPE : 1826 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1827 result.setExtra(text); 1828 } 1829 } 1830 return result; 1831 } 1832 1833 // Called by JNI when the DOM has changed the focus. Clear the focus so 1834 // that new keys will go to the newly focused field 1835 private void domChangedFocus() { 1836 if (inEditingMode()) { 1837 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 1838 } 1839 } 1840 /** 1841 * Request the href of an anchor element due to getFocusNodePath returning 1842 * "href." If hrefMsg is null, this method returns immediately and does not 1843 * dispatch hrefMsg to its target. 1844 * 1845 * @param hrefMsg This message will be dispatched with the result of the 1846 * request as the data member with "url" as key. The result can 1847 * be null. 1848 */ 1849 // FIXME: API change required to change the name of this function. We now 1850 // look at the cursor node, and not the focus node. Also, what is 1851 // getFocusNodePath? 1852 public void requestFocusNodeHref(Message hrefMsg) { 1853 if (hrefMsg == null || mNativeClass == 0) { 1854 return; 1855 } 1856 if (nativeCursorIsAnchor()) { 1857 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1858 nativeCursorFramePointer(), nativeCursorNodePointer(), 1859 hrefMsg); 1860 } 1861 } 1862 1863 /** 1864 * Request the url of the image last touched by the user. msg will be sent 1865 * to its target with a String representing the url as its object. 1866 * 1867 * @param msg This message will be dispatched with the result of the request 1868 * as the data member with "url" as key. The result can be null. 1869 */ 1870 public void requestImageRef(Message msg) { 1871 if (0 == mNativeClass) return; // client isn't initialized 1872 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1873 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1874 String ref = nativeImageURI(contentX, contentY); 1875 Bundle data = msg.getData(); 1876 data.putString("url", ref); 1877 msg.setData(data); 1878 msg.sendToTarget(); 1879 } 1880 1881 private static int pinLoc(int x, int viewMax, int docMax) { 1882// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1883 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1884 // pin the short document to the top/left of the screen 1885 x = 0; 1886// Log.d(LOGTAG, "--- center " + x); 1887 } else if (x < 0) { 1888 x = 0; 1889// Log.d(LOGTAG, "--- zero"); 1890 } else if (x + viewMax > docMax) { 1891 x = docMax - viewMax; 1892// Log.d(LOGTAG, "--- pin " + x); 1893 } 1894 return x; 1895 } 1896 1897 // Expects x in view coordinates 1898 private int pinLocX(int x) { 1899 if (mInOverScrollMode) return x; 1900 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1901 } 1902 1903 // Expects y in view coordinates 1904 private int pinLocY(int y) { 1905 if (mInOverScrollMode) return y; 1906 int titleH = getTitleHeight(); 1907 // if the titlebar is still visible, just pin against 0 1908 if (y <= titleH) { 1909 return Math.max(y, 0); 1910 } 1911 // convert to 0-based coordinate (subtract the title height) 1912 // pin(), and then add the title height back in 1913 return pinLoc(y - titleH, getViewHeight(), 1914 computeVerticalScrollRange()) + titleH; 1915 } 1916 1917 /** 1918 * A title bar which is embedded in this WebView, and scrolls along with it 1919 * vertically, but not horizontally. 1920 */ 1921 private View mTitleBar; 1922 1923 /** 1924 * Since we draw the title bar ourselves, we removed the shadow from the 1925 * browser's activity. We do want a shadow at the bottom of the title bar, 1926 * or at the top of the screen if the title bar is not visible. This 1927 * drawable serves that purpose. 1928 */ 1929 private Drawable mTitleShadow; 1930 1931 /** 1932 * Add or remove a title bar to be embedded into the WebView, and scroll 1933 * along with it vertically, while remaining in view horizontally. Pass 1934 * null to remove the title bar from the WebView, and return to drawing 1935 * the WebView normally without translating to account for the title bar. 1936 * @hide 1937 */ 1938 public void setEmbeddedTitleBar(View v) { 1939 if (mTitleBar == v) return; 1940 if (mTitleBar != null) { 1941 removeView(mTitleBar); 1942 } 1943 if (null != v) { 1944 addView(v, new AbsoluteLayout.LayoutParams( 1945 ViewGroup.LayoutParams.MATCH_PARENT, 1946 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1947 if (mTitleShadow == null) { 1948 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1949 com.android.internal.R.drawable.title_bar_shadow); 1950 } 1951 } 1952 mTitleBar = v; 1953 } 1954 1955 /** 1956 * Given a distance in view space, convert it to content space. Note: this 1957 * does not reflect translation, just scaling, so this should not be called 1958 * with coordinates, but should be called for dimensions like width or 1959 * height. 1960 */ 1961 private int viewToContentDimension(int d) { 1962 return Math.round(d * mInvActualScale); 1963 } 1964 1965 /** 1966 * Given an x coordinate in view space, convert it to content space. Also 1967 * may be used for absolute heights (such as for the WebTextView's 1968 * textSize, which is unaffected by the height of the title bar). 1969 */ 1970 /*package*/ int viewToContentX(int x) { 1971 return viewToContentDimension(x); 1972 } 1973 1974 /** 1975 * Given a y coordinate in view space, convert it to content space. 1976 * Takes into account the height of the title bar if there is one 1977 * embedded into the WebView. 1978 */ 1979 /*package*/ int viewToContentY(int y) { 1980 return viewToContentDimension(y - getTitleHeight()); 1981 } 1982 1983 /** 1984 * Given a distance in content space, convert it to view space. Note: this 1985 * does not reflect translation, just scaling, so this should not be called 1986 * with coordinates, but should be called for dimensions like width or 1987 * height. 1988 */ 1989 /*package*/ int contentToViewDimension(int d) { 1990 return Math.round(d * mActualScale); 1991 } 1992 1993 /** 1994 * Given an x coordinate in content space, convert it to view 1995 * space. 1996 */ 1997 /*package*/ int contentToViewX(int x) { 1998 return contentToViewDimension(x); 1999 } 2000 2001 /** 2002 * Given a y coordinate in content space, convert it to view 2003 * space. Takes into account the height of the title bar. 2004 */ 2005 /*package*/ int contentToViewY(int y) { 2006 return contentToViewDimension(y) + getTitleHeight(); 2007 } 2008 2009 private Rect contentToViewRect(Rect x) { 2010 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2011 contentToViewX(x.right), contentToViewY(x.bottom)); 2012 } 2013 2014 /* To invalidate a rectangle in content coordinates, we need to transform 2015 the rect into view coordinates, so we can then call invalidate(...). 2016 2017 Normally, we would just call contentToView[XY](...), which eventually 2018 calls Math.round(coordinate * mActualScale). However, for invalidates, 2019 we need to account for the slop that occurs with antialiasing. To 2020 address that, we are a little more liberal in the size of the rect that 2021 we invalidate. 2022 2023 This liberal calculation calls floor() for the top/left, and ceil() for 2024 the bottom/right coordinates. This catches the possible extra pixels of 2025 antialiasing that we might have missed with just round(). 2026 */ 2027 2028 // Called by JNI to invalidate the View, given rectangle coordinates in 2029 // content space 2030 private void viewInvalidate(int l, int t, int r, int b) { 2031 final float scale = mActualScale; 2032 final int dy = getTitleHeight(); 2033 invalidate((int)Math.floor(l * scale), 2034 (int)Math.floor(t * scale) + dy, 2035 (int)Math.ceil(r * scale), 2036 (int)Math.ceil(b * scale) + dy); 2037 } 2038 2039 // Called by JNI to invalidate the View after a delay, given rectangle 2040 // coordinates in content space 2041 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2042 final float scale = mActualScale; 2043 final int dy = getTitleHeight(); 2044 postInvalidateDelayed(delay, 2045 (int)Math.floor(l * scale), 2046 (int)Math.floor(t * scale) + dy, 2047 (int)Math.ceil(r * scale), 2048 (int)Math.ceil(b * scale) + dy); 2049 } 2050 2051 private void invalidateContentRect(Rect r) { 2052 viewInvalidate(r.left, r.top, r.right, r.bottom); 2053 } 2054 2055 // stop the scroll animation, and don't let a subsequent fling add 2056 // to the existing velocity 2057 private void abortAnimation() { 2058 mScroller.abortAnimation(); 2059 mLastVelocity = 0; 2060 } 2061 2062 /* call from webcoreview.draw(), so we're still executing in the UI thread 2063 */ 2064 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2065 2066 // premature data from webkit, ignore 2067 if ((w | h) == 0) { 2068 return; 2069 } 2070 2071 // don't abort a scroll animation if we didn't change anything 2072 if (mContentWidth != w || mContentHeight != h) { 2073 // record new dimensions 2074 mContentWidth = w; 2075 mContentHeight = h; 2076 // If history Picture is drawn, don't update scroll. They will be 2077 // updated when we get out of that mode. 2078 if (!mDrawHistory) { 2079 // repin our scroll, taking into account the new content size 2080 int oldX = mScrollX; 2081 int oldY = mScrollY; 2082 mScrollX = pinLocX(mScrollX); 2083 mScrollY = pinLocY(mScrollY); 2084 if (oldX != mScrollX || oldY != mScrollY) { 2085 sendOurVisibleRect(); 2086 } 2087 if (!mScroller.isFinished()) { 2088 // We are in the middle of a scroll. Repin the final scroll 2089 // position. 2090 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2091 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2092 } 2093 } 2094 } 2095 contentSizeChanged(updateLayout); 2096 } 2097 2098 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 2099 boolean force) { 2100 if (scale < mMinZoomScale) { 2101 scale = mMinZoomScale; 2102 // set mInZoomOverview for non mobile sites 2103 if (scale < mDefaultScale) mInZoomOverview = true; 2104 } else if (scale > mMaxZoomScale) { 2105 scale = mMaxZoomScale; 2106 } 2107 if (updateTextWrapScale) { 2108 mTextWrapScale = scale; 2109 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 2110 mLastHeightSent = 0; 2111 } 2112 if (scale != mActualScale || force) { 2113 if (mDrawHistory) { 2114 // If history Picture is drawn, don't update scroll. They will 2115 // be updated when we get out of that mode. 2116 if (scale != mActualScale && !mPreviewZoomOnly) { 2117 mCallbackProxy.onScaleChanged(mActualScale, scale); 2118 } 2119 mActualScale = scale; 2120 mInvActualScale = 1 / scale; 2121 sendViewSizeZoom(); 2122 } else { 2123 // update our scroll so we don't appear to jump 2124 // i.e. keep the center of the doc in the center of the view 2125 2126 int oldX = mScrollX; 2127 int oldY = mScrollY; 2128 float ratio = scale * mInvActualScale; // old inverse 2129 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2130 float sy = ratio * oldY + (ratio - 1) 2131 * (mZoomCenterY - getTitleHeight()); 2132 2133 // now update our new scale and inverse 2134 if (scale != mActualScale && !mPreviewZoomOnly) { 2135 mCallbackProxy.onScaleChanged(mActualScale, scale); 2136 } 2137 mActualScale = scale; 2138 mInvActualScale = 1 / scale; 2139 2140 // Scale all the child views 2141 mViewManager.scaleAll(); 2142 2143 // as we don't have animation for scaling, don't do animation 2144 // for scrolling, as it causes weird intermediate state 2145 // pinScrollTo(Math.round(sx), Math.round(sy)); 2146 mScrollX = pinLocX(Math.round(sx)); 2147 mScrollY = pinLocY(Math.round(sy)); 2148 2149 // update webkit 2150 sendViewSizeZoom(); 2151 sendOurVisibleRect(); 2152 } 2153 } 2154 } 2155 2156 // Used to avoid sending many visible rect messages. 2157 private Rect mLastVisibleRectSent; 2158 private Rect mLastGlobalRect; 2159 2160 private Rect sendOurVisibleRect() { 2161 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2162 2163 Rect rect = new Rect(); 2164 calcOurContentVisibleRect(rect); 2165 // Rect.equals() checks for null input. 2166 if (!rect.equals(mLastVisibleRectSent)) { 2167 Point pos = new Point(rect.left, rect.top); 2168 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2169 nativeMoveGeneration(), 0, pos); 2170 mLastVisibleRectSent = rect; 2171 } 2172 Rect globalRect = new Rect(); 2173 if (getGlobalVisibleRect(globalRect) 2174 && !globalRect.equals(mLastGlobalRect)) { 2175 if (DebugFlags.WEB_VIEW) { 2176 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2177 + globalRect.top + ",r=" + globalRect.right + ",b=" 2178 + globalRect.bottom); 2179 } 2180 // TODO: the global offset is only used by windowRect() 2181 // in ChromeClientAndroid ; other clients such as touch 2182 // and mouse events could return view + screen relative points. 2183 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2184 mLastGlobalRect = globalRect; 2185 } 2186 return rect; 2187 } 2188 2189 // Sets r to be the visible rectangle of our webview in view coordinates 2190 private void calcOurVisibleRect(Rect r) { 2191 Point p = new Point(); 2192 getGlobalVisibleRect(r, p); 2193 r.offset(-p.x, -p.y); 2194 if (mFindIsUp) { 2195 r.bottom -= mFindHeight; 2196 } 2197 } 2198 2199 // Sets r to be our visible rectangle in content coordinates 2200 private void calcOurContentVisibleRect(Rect r) { 2201 calcOurVisibleRect(r); 2202 // since we might overscroll, pin the rect to the bounds of the content 2203 r.left = Math.max(viewToContentX(r.left), 0); 2204 // viewToContentY will remove the total height of the title bar. Add 2205 // the visible height back in to account for the fact that if the title 2206 // bar is partially visible, the part of the visible rect which is 2207 // displaying our content is displaced by that amount. 2208 r.top = Math.max(viewToContentY(r.top + getVisibleTitleHeight()), 0); 2209 r.right = Math.min(viewToContentX(r.right), mContentWidth); 2210 r.bottom = Math.min(viewToContentY(r.bottom), mContentHeight); 2211 } 2212 2213 static class ViewSizeData { 2214 int mWidth; 2215 int mHeight; 2216 int mTextWrapWidth; 2217 int mAnchorX; 2218 int mAnchorY; 2219 float mScale; 2220 boolean mIgnoreHeight; 2221 } 2222 2223 /** 2224 * Compute unzoomed width and height, and if they differ from the last 2225 * values we sent, send them to webkit (to be used has new viewport) 2226 * 2227 * @return true if new values were sent 2228 */ 2229 private boolean sendViewSizeZoom() { 2230 if (mPreviewZoomOnly) return false; 2231 2232 int viewWidth = getViewWidth(); 2233 int newWidth = Math.round(viewWidth * mInvActualScale); 2234 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2235 /* 2236 * Because the native side may have already done a layout before the 2237 * View system was able to measure us, we have to send a height of 0 to 2238 * remove excess whitespace when we grow our width. This will trigger a 2239 * layout and a change in content size. This content size change will 2240 * mean that contentSizeChanged will either call this method directly or 2241 * indirectly from onSizeChanged. 2242 */ 2243 if (newWidth > mLastWidthSent && mWrapContent) { 2244 newHeight = 0; 2245 } 2246 // Avoid sending another message if the dimensions have not changed. 2247 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2248 ViewSizeData data = new ViewSizeData(); 2249 data.mWidth = newWidth; 2250 data.mHeight = newHeight; 2251 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2252 data.mScale = mActualScale; 2253 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2254 data.mAnchorX = mAnchorX; 2255 data.mAnchorY = mAnchorY; 2256 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2257 mLastWidthSent = newWidth; 2258 mLastHeightSent = newHeight; 2259 mAnchorX = mAnchorY = 0; 2260 return true; 2261 } 2262 return false; 2263 } 2264 2265 @Override 2266 protected int computeHorizontalScrollRange() { 2267 if (mDrawHistory) { 2268 return mHistoryWidth; 2269 } else { 2270 // to avoid rounding error caused unnecessary scrollbar, use floor 2271 return (int) Math.floor(mContentWidth * mActualScale); 2272 } 2273 } 2274 2275 @Override 2276 protected int computeVerticalScrollRange() { 2277 if (mDrawHistory) { 2278 return mHistoryHeight; 2279 } else { 2280 // to avoid rounding error caused unnecessary scrollbar, use floor 2281 return (int) Math.floor(mContentHeight * mActualScale); 2282 } 2283 } 2284 2285 @Override 2286 protected int computeVerticalScrollOffset() { 2287 return Math.max(mScrollY - getTitleHeight(), 0); 2288 } 2289 2290 @Override 2291 protected int computeVerticalScrollExtent() { 2292 return getViewHeight(); 2293 } 2294 2295 /** @hide */ 2296 @Override 2297 protected void onDrawVerticalScrollBar(Canvas canvas, 2298 Drawable scrollBar, 2299 int l, int t, int r, int b) { 2300 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2301 scrollBar.draw(canvas); 2302 } 2303 2304 private boolean canOverscrollHorizontally() { 2305 return (Math.abs(mMinZoomScale - mMaxZoomScale) >= MINIMUM_SCALE_INCREMENT) 2306 && getSettings().supportZoom() 2307 && getSettings().getUseWideViewPort(); 2308 } 2309 2310 @Override 2311 protected void onOverscrolled(int scrollX, int scrollY, boolean clampedX, 2312 boolean clampedY) { 2313 mInOverScrollMode = false; 2314 int maxX = computeMaxScrollX(); 2315 if (maxX == 0 && !canOverscrollHorizontally()) { 2316 // do not over scroll x if the page just fits the screen and it 2317 // can't zoom or the view doesn't use wide viewport 2318 scrollX = pinLocX(scrollX); 2319 } else if (scrollX < 0 || scrollX > maxX) { 2320 mInOverScrollMode = true; 2321 } 2322 if (scrollY < 0 || scrollY > computeMaxScrollY()) { 2323 mInOverScrollMode = true; 2324 } 2325 super.scrollTo(scrollX, scrollY); 2326 } 2327 2328 /** 2329 * Get the url for the current page. This is not always the same as the url 2330 * passed to WebViewClient.onPageStarted because although the load for 2331 * that url has begun, the current page may not have changed. 2332 * @return The url for the current page. 2333 */ 2334 public String getUrl() { 2335 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2336 return h != null ? h.getUrl() : null; 2337 } 2338 2339 /** 2340 * Get the original url for the current page. This is not always the same 2341 * as the url passed to WebViewClient.onPageStarted because although the 2342 * load for that url has begun, the current page may not have changed. 2343 * Also, there may have been redirects resulting in a different url to that 2344 * originally requested. 2345 * @return The url that was originally requested for the current page. 2346 */ 2347 public String getOriginalUrl() { 2348 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2349 return h != null ? h.getOriginalUrl() : null; 2350 } 2351 2352 /** 2353 * Get the title for the current page. This is the title of the current page 2354 * until WebViewClient.onReceivedTitle is called. 2355 * @return The title for the current page. 2356 */ 2357 public String getTitle() { 2358 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2359 return h != null ? h.getTitle() : null; 2360 } 2361 2362 /** 2363 * Get the favicon for the current page. This is the favicon of the current 2364 * page until WebViewClient.onReceivedIcon is called. 2365 * @return The favicon for the current page. 2366 */ 2367 public Bitmap getFavicon() { 2368 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2369 return h != null ? h.getFavicon() : null; 2370 } 2371 2372 /** 2373 * Get the touch icon url for the apple-touch-icon <link> element. 2374 * @hide 2375 */ 2376 public String getTouchIconUrl() { 2377 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2378 return h != null ? h.getTouchIconUrl() : null; 2379 } 2380 2381 /** 2382 * Get the progress for the current page. 2383 * @return The progress for the current page between 0 and 100. 2384 */ 2385 public int getProgress() { 2386 return mCallbackProxy.getProgress(); 2387 } 2388 2389 /** 2390 * @return the height of the HTML content. 2391 */ 2392 public int getContentHeight() { 2393 return mContentHeight; 2394 } 2395 2396 /** 2397 * @return the width of the HTML content. 2398 * @hide 2399 */ 2400 public int getContentWidth() { 2401 return mContentWidth; 2402 } 2403 2404 /** 2405 * Pause all layout, parsing, and javascript timers for all webviews. This 2406 * is a global requests, not restricted to just this webview. This can be 2407 * useful if the application has been paused. 2408 */ 2409 public void pauseTimers() { 2410 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2411 } 2412 2413 /** 2414 * Resume all layout, parsing, and javascript timers for all webviews. 2415 * This will resume dispatching all timers. 2416 */ 2417 public void resumeTimers() { 2418 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2419 } 2420 2421 /** 2422 * Call this to pause any extra processing associated with this view and 2423 * its associated DOM/plugins/javascript/etc. For example, if the view is 2424 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2425 * network traffic. When the view is again "active", call onResume(). 2426 * 2427 * Note that this differs from pauseTimers(), which affects all views/DOMs 2428 * @hide 2429 */ 2430 public void onPause() { 2431 if (!mIsPaused) { 2432 mIsPaused = true; 2433 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2434 } 2435 } 2436 2437 /** 2438 * Call this to balanace a previous call to onPause() 2439 * @hide 2440 */ 2441 public void onResume() { 2442 if (mIsPaused) { 2443 mIsPaused = false; 2444 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2445 } 2446 } 2447 2448 /** 2449 * Returns true if the view is paused, meaning onPause() was called. Calling 2450 * onResume() sets the paused state back to false. 2451 * @hide 2452 */ 2453 public boolean isPaused() { 2454 return mIsPaused; 2455 } 2456 2457 /** 2458 * Call this to inform the view that memory is low so that it can 2459 * free any available memory. 2460 */ 2461 public void freeMemory() { 2462 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2463 } 2464 2465 /** 2466 * Clear the resource cache. Note that the cache is per-application, so 2467 * this will clear the cache for all WebViews used. 2468 * 2469 * @param includeDiskFiles If false, only the RAM cache is cleared. 2470 */ 2471 public void clearCache(boolean includeDiskFiles) { 2472 // Note: this really needs to be a static method as it clears cache for all 2473 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2474 // we can't make this static. 2475 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2476 includeDiskFiles ? 1 : 0, 0); 2477 } 2478 2479 /** 2480 * Make sure that clearing the form data removes the adapter from the 2481 * currently focused textfield if there is one. 2482 */ 2483 public void clearFormData() { 2484 if (inEditingMode()) { 2485 AutoCompleteAdapter adapter = null; 2486 mWebTextView.setAdapterCustom(adapter); 2487 } 2488 } 2489 2490 /** 2491 * Tell the WebView to clear its internal back/forward list. 2492 */ 2493 public void clearHistory() { 2494 mCallbackProxy.getBackForwardList().setClearPending(); 2495 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2496 } 2497 2498 /** 2499 * Clear the SSL preferences table stored in response to proceeding with SSL 2500 * certificate errors. 2501 */ 2502 public void clearSslPreferences() { 2503 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2504 } 2505 2506 /** 2507 * Return the WebBackForwardList for this WebView. This contains the 2508 * back/forward list for use in querying each item in the history stack. 2509 * This is a copy of the private WebBackForwardList so it contains only a 2510 * snapshot of the current state. Multiple calls to this method may return 2511 * different objects. The object returned from this method will not be 2512 * updated to reflect any new state. 2513 */ 2514 public WebBackForwardList copyBackForwardList() { 2515 return mCallbackProxy.getBackForwardList().clone(); 2516 } 2517 2518 /* 2519 * Highlight and scroll to the next occurance of String in findAll. 2520 * Wraps the page infinitely, and scrolls. Must be called after 2521 * calling findAll. 2522 * 2523 * @param forward Direction to search. 2524 */ 2525 public void findNext(boolean forward) { 2526 if (0 == mNativeClass) return; // client isn't initialized 2527 nativeFindNext(forward); 2528 } 2529 2530 /* 2531 * Find all instances of find on the page and highlight them. 2532 * @param find String to find. 2533 * @return int The number of occurances of the String "find" 2534 * that were found. 2535 */ 2536 public int findAll(String find) { 2537 if (0 == mNativeClass) return 0; // client isn't initialized 2538 int result = find != null ? nativeFindAll(find.toLowerCase(), 2539 find.toUpperCase()) : 0; 2540 invalidate(); 2541 mLastFind = find; 2542 return result; 2543 } 2544 2545 /** 2546 * @hide 2547 */ 2548 public void setFindIsUp(boolean isUp) { 2549 mFindIsUp = isUp; 2550 if (isUp) { 2551 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2552 false); 2553 } 2554 if (0 == mNativeClass) return; // client isn't initialized 2555 nativeSetFindIsUp(isUp); 2556 } 2557 2558 // Used to know whether the find dialog is open. Affects whether 2559 // or not we draw the highlights for matches. 2560 private boolean mFindIsUp; 2561 2562 private int mFindHeight; 2563 // Keep track of the last string sent, so we can search again after an 2564 // orientation change or the dismissal of the soft keyboard. 2565 private String mLastFind; 2566 2567 /** 2568 * Return the first substring consisting of the address of a physical 2569 * location. Currently, only addresses in the United States are detected, 2570 * and consist of: 2571 * - a house number 2572 * - a street name 2573 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2574 * - a city name 2575 * - a state or territory, either spelled out or two-letter abbr. 2576 * - an optional 5 digit or 9 digit zip code. 2577 * 2578 * All names must be correctly capitalized, and the zip code, if present, 2579 * must be valid for the state. The street type must be a standard USPS 2580 * spelling or abbreviation. The state or territory must also be spelled 2581 * or abbreviated using USPS standards. The house number may not exceed 2582 * five digits. 2583 * @param addr The string to search for addresses. 2584 * 2585 * @return the address, or if no address is found, return null. 2586 */ 2587 public static String findAddress(String addr) { 2588 return findAddress(addr, false); 2589 } 2590 2591 /** 2592 * @hide 2593 * Return the first substring consisting of the address of a physical 2594 * location. Currently, only addresses in the United States are detected, 2595 * and consist of: 2596 * - a house number 2597 * - a street name 2598 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2599 * - a city name 2600 * - a state or territory, either spelled out or two-letter abbr. 2601 * - an optional 5 digit or 9 digit zip code. 2602 * 2603 * Names are optionally capitalized, and the zip code, if present, 2604 * must be valid for the state. The street type must be a standard USPS 2605 * spelling or abbreviation. The state or territory must also be spelled 2606 * or abbreviated using USPS standards. The house number may not exceed 2607 * five digits. 2608 * @param addr The string to search for addresses. 2609 * @param caseInsensitive addr Set to true to make search ignore case. 2610 * 2611 * @return the address, or if no address is found, return null. 2612 */ 2613 public static String findAddress(String addr, boolean caseInsensitive) { 2614 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2615 } 2616 2617 /* 2618 * Clear the highlighting surrounding text matches created by findAll. 2619 */ 2620 public void clearMatches() { 2621 mLastFind = ""; 2622 if (mNativeClass == 0) 2623 return; 2624 nativeSetFindIsEmpty(); 2625 invalidate(); 2626 } 2627 2628 /** 2629 * @hide 2630 */ 2631 public void notifyFindDialogDismissed() { 2632 clearMatches(); 2633 setFindIsUp(false); 2634 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2635 false); 2636 // Now that the dialog has been removed, ensure that we scroll to a 2637 // location that is not beyond the end of the page. 2638 pinScrollTo(mScrollX, mScrollY, false, 0); 2639 invalidate(); 2640 } 2641 2642 /** 2643 * @hide 2644 */ 2645 public void setFindDialogHeight(int height) { 2646 if (DebugFlags.WEB_VIEW) { 2647 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2648 } 2649 mFindHeight = height; 2650 } 2651 2652 /** 2653 * Query the document to see if it contains any image references. The 2654 * message object will be dispatched with arg1 being set to 1 if images 2655 * were found and 0 if the document does not reference any images. 2656 * @param response The message that will be dispatched with the result. 2657 */ 2658 public void documentHasImages(Message response) { 2659 if (response == null) { 2660 return; 2661 } 2662 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2663 } 2664 2665 @Override 2666 public void computeScroll() { 2667 if (mScroller.computeScrollOffset()) { 2668 int oldX = mScrollX; 2669 int oldY = mScrollY; 2670 int x = mScroller.getCurrX(); 2671 int y = mScroller.getCurrY(); 2672 postInvalidate(); // So we draw again 2673 if (oldX != x || oldY != y) { 2674 overscrollBy(x - oldX, y - oldY, oldX, oldY, 2675 computeMaxScrollX(), computeMaxScrollY(), 2676 getViewWidth() / 3, getViewHeight() / 3); 2677 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2678 } 2679 } else { 2680 super.computeScroll(); 2681 } 2682 } 2683 2684 private static int computeDuration(int dx, int dy) { 2685 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2686 int duration = distance * 1000 / STD_SPEED; 2687 return Math.min(duration, MAX_DURATION); 2688 } 2689 2690 // helper to pin the scrollBy parameters (already in view coordinates) 2691 // returns true if the scroll was changed 2692 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2693 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2694 } 2695 // helper to pin the scrollTo parameters (already in view coordinates) 2696 // returns true if the scroll was changed 2697 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2698 x = pinLocX(x); 2699 y = pinLocY(y); 2700 int dx = x - mScrollX; 2701 int dy = y - mScrollY; 2702 2703 if ((dx | dy) == 0) { 2704 return false; 2705 } 2706 if (animate) { 2707 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2708 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2709 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2710 awakenScrollBars(mScroller.getDuration()); 2711 invalidate(); 2712 } else { 2713 abortAnimation(); // just in case 2714 scrollTo(x, y); 2715 } 2716 return true; 2717 } 2718 2719 // Scale from content to view coordinates, and pin. 2720 // Also called by jni webview.cpp 2721 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2722 if (mDrawHistory) { 2723 // disallow WebView to change the scroll position as History Picture 2724 // is used in the view system. 2725 // TODO: as we switchOutDrawHistory when trackball or navigation 2726 // keys are hit, this should be safe. Right? 2727 return false; 2728 } 2729 cx = contentToViewDimension(cx); 2730 cy = contentToViewDimension(cy); 2731 if (mHeightCanMeasure) { 2732 // move our visible rect according to scroll request 2733 if (cy != 0) { 2734 Rect tempRect = new Rect(); 2735 calcOurVisibleRect(tempRect); 2736 tempRect.offset(cx, cy); 2737 requestRectangleOnScreen(tempRect); 2738 } 2739 // FIXME: We scroll horizontally no matter what because currently 2740 // ScrollView and ListView will not scroll horizontally. 2741 // FIXME: Why do we only scroll horizontally if there is no 2742 // vertical scroll? 2743// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2744 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2745 } else { 2746 return pinScrollBy(cx, cy, animate, 0); 2747 } 2748 } 2749 2750 /** 2751 * Called by CallbackProxy when the page finishes loading. 2752 * @param url The URL of the page which has finished loading. 2753 */ 2754 /* package */ void onPageFinished(String url) { 2755 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 2756 // If the user is now on a different page, or has scrolled the page 2757 // past the point where the title bar is offscreen, ignore the 2758 // scroll request. 2759 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 2760 && mScrollX == 0 && mScrollY == 0) { 2761 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 2762 SLIDE_TITLE_DURATION); 2763 } 2764 mPageThatNeedsToSlideTitleBarOffScreen = null; 2765 } 2766 } 2767 2768 /** 2769 * The URL of a page that sent a message to scroll the title bar off screen. 2770 * 2771 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 2772 * title bar off the screen. Sometimes, the scroll position is set before 2773 * the page finishes loading. Rather than scrolling while the page is still 2774 * loading, keep track of the URL and new scroll position so we can perform 2775 * the scroll once the page finishes loading. 2776 */ 2777 private String mPageThatNeedsToSlideTitleBarOffScreen; 2778 2779 /** 2780 * The destination Y scroll position to be used when the page finishes 2781 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 2782 */ 2783 private int mYDistanceToSlideTitleOffScreen; 2784 2785 // scale from content to view coordinates, and pin 2786 // return true if pin caused the final x/y different than the request cx/cy, 2787 // and a future scroll may reach the request cx/cy after our size has 2788 // changed 2789 // return false if the view scroll to the exact position as it is requested, 2790 // where negative numbers are taken to mean 0 2791 private boolean setContentScrollTo(int cx, int cy) { 2792 if (mDrawHistory) { 2793 // disallow WebView to change the scroll position as History Picture 2794 // is used in the view system. 2795 // One known case where this is called is that WebCore tries to 2796 // restore the scroll position. As history Picture already uses the 2797 // saved scroll position, it is ok to skip this. 2798 return false; 2799 } 2800 int vx; 2801 int vy; 2802 if ((cx | cy) == 0) { 2803 // If the page is being scrolled to (0,0), do not add in the title 2804 // bar's height, and simply scroll to (0,0). (The only other work 2805 // in contentToView_ is to multiply, so this would not change 0.) 2806 vx = 0; 2807 vy = 0; 2808 } else { 2809 vx = contentToViewX(cx); 2810 vy = contentToViewY(cy); 2811 } 2812// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2813// vx + " " + vy + "]"); 2814 // Some mobile sites attempt to scroll the title bar off the page by 2815 // scrolling to (0,1). If we are at the top left corner of the 2816 // page, assume this is an attempt to scroll off the title bar, and 2817 // animate the title bar off screen slowly enough that the user can see 2818 // it. 2819 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 2820 && mTitleBar != null) { 2821 // FIXME: 100 should be defined somewhere as our max progress. 2822 if (getProgress() < 100) { 2823 // Wait to scroll the title bar off screen until the page has 2824 // finished loading. Keep track of the URL and the destination 2825 // Y position 2826 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 2827 mYDistanceToSlideTitleOffScreen = vy; 2828 } else { 2829 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2830 } 2831 // Since we are animating, we have not yet reached the desired 2832 // scroll position. Do not return true to request another attempt 2833 return false; 2834 } 2835 pinScrollTo(vx, vy, false, 0); 2836 // If the request was to scroll to a negative coordinate, treat it as if 2837 // it was a request to scroll to 0 2838 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2839 return true; 2840 } else { 2841 return false; 2842 } 2843 } 2844 2845 // scale from content to view coordinates, and pin 2846 private void spawnContentScrollTo(int cx, int cy) { 2847 if (mDrawHistory) { 2848 // disallow WebView to change the scroll position as History Picture 2849 // is used in the view system. 2850 return; 2851 } 2852 int vx = contentToViewX(cx); 2853 int vy = contentToViewY(cy); 2854 pinScrollTo(vx, vy, true, 0); 2855 } 2856 2857 /** 2858 * These are from webkit, and are in content coordinate system (unzoomed) 2859 */ 2860 private void contentSizeChanged(boolean updateLayout) { 2861 // suppress 0,0 since we usually see real dimensions soon after 2862 // this avoids drawing the prev content in a funny place. If we find a 2863 // way to consolidate these notifications, this check may become 2864 // obsolete 2865 if ((mContentWidth | mContentHeight) == 0) { 2866 return; 2867 } 2868 2869 if (mHeightCanMeasure) { 2870 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2871 || updateLayout) { 2872 requestLayout(); 2873 } 2874 } else if (mWidthCanMeasure) { 2875 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2876 || updateLayout) { 2877 requestLayout(); 2878 } 2879 } else { 2880 // If we don't request a layout, try to send our view size to the 2881 // native side to ensure that WebCore has the correct dimensions. 2882 sendViewSizeZoom(); 2883 } 2884 } 2885 2886 /** 2887 * Set the WebViewClient that will receive various notifications and 2888 * requests. This will replace the current handler. 2889 * @param client An implementation of WebViewClient. 2890 */ 2891 public void setWebViewClient(WebViewClient client) { 2892 mCallbackProxy.setWebViewClient(client); 2893 } 2894 2895 /** 2896 * Gets the WebViewClient 2897 * @return the current WebViewClient instance. 2898 * 2899 *@hide pending API council approval. 2900 */ 2901 public WebViewClient getWebViewClient() { 2902 return mCallbackProxy.getWebViewClient(); 2903 } 2904 2905 /** 2906 * Register the interface to be used when content can not be handled by 2907 * the rendering engine, and should be downloaded instead. This will replace 2908 * the current handler. 2909 * @param listener An implementation of DownloadListener. 2910 */ 2911 public void setDownloadListener(DownloadListener listener) { 2912 mCallbackProxy.setDownloadListener(listener); 2913 } 2914 2915 /** 2916 * Set the chrome handler. This is an implementation of WebChromeClient for 2917 * use in handling Javascript dialogs, favicons, titles, and the progress. 2918 * This will replace the current handler. 2919 * @param client An implementation of WebChromeClient. 2920 */ 2921 public void setWebChromeClient(WebChromeClient client) { 2922 mCallbackProxy.setWebChromeClient(client); 2923 } 2924 2925 /** 2926 * Gets the chrome handler. 2927 * @return the current WebChromeClient instance. 2928 * 2929 * @hide API council approval. 2930 */ 2931 public WebChromeClient getWebChromeClient() { 2932 return mCallbackProxy.getWebChromeClient(); 2933 } 2934 2935 /** 2936 * Set the back/forward list client. This is an implementation of 2937 * WebBackForwardListClient for handling new items and changes in the 2938 * history index. 2939 * @param client An implementation of WebBackForwardListClient. 2940 * {@hide} 2941 */ 2942 public void setWebBackForwardListClient(WebBackForwardListClient client) { 2943 mCallbackProxy.setWebBackForwardListClient(client); 2944 } 2945 2946 /** 2947 * Gets the WebBackForwardListClient. 2948 * {@hide} 2949 */ 2950 public WebBackForwardListClient getWebBackForwardListClient() { 2951 return mCallbackProxy.getWebBackForwardListClient(); 2952 } 2953 2954 /** 2955 * Set the Picture listener. This is an interface used to receive 2956 * notifications of a new Picture. 2957 * @param listener An implementation of WebView.PictureListener. 2958 */ 2959 public void setPictureListener(PictureListener listener) { 2960 mPictureListener = listener; 2961 } 2962 2963 /** 2964 * {@hide} 2965 */ 2966 /* FIXME: Debug only! Remove for SDK! */ 2967 public void externalRepresentation(Message callback) { 2968 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2969 } 2970 2971 /** 2972 * {@hide} 2973 */ 2974 /* FIXME: Debug only! Remove for SDK! */ 2975 public void documentAsText(Message callback) { 2976 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2977 } 2978 2979 /** 2980 * Use this function to bind an object to Javascript so that the 2981 * methods can be accessed from Javascript. 2982 * <p><strong>IMPORTANT:</strong> 2983 * <ul> 2984 * <li> Using addJavascriptInterface() allows JavaScript to control your 2985 * application. This can be a very useful feature or a dangerous security 2986 * issue. When the HTML in the WebView is untrustworthy (for example, part 2987 * or all of the HTML is provided by some person or process), then an 2988 * attacker could inject HTML that will execute your code and possibly any 2989 * code of the attacker's choosing.<br> 2990 * Do not use addJavascriptInterface() unless all of the HTML in this 2991 * WebView was written by you.</li> 2992 * <li> The Java object that is bound runs in another thread and not in 2993 * the thread that it was constructed in.</li> 2994 * </ul></p> 2995 * @param obj The class instance to bind to Javascript 2996 * @param interfaceName The name to used to expose the class in Javascript 2997 */ 2998 public void addJavascriptInterface(Object obj, String interfaceName) { 2999 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3000 arg.mObject = obj; 3001 arg.mInterfaceName = interfaceName; 3002 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3003 } 3004 3005 /** 3006 * Return the WebSettings object used to control the settings for this 3007 * WebView. 3008 * @return A WebSettings object that can be used to control this WebView's 3009 * settings. 3010 */ 3011 public WebSettings getSettings() { 3012 return mWebViewCore.getSettings(); 3013 } 3014 3015 /** 3016 * Use this method to inform the webview about packages that are installed 3017 * in the system. This information will be used by the 3018 * navigator.isApplicationInstalled() API. 3019 * @param packageNames is a set of package names that are known to be 3020 * installed in the system. 3021 * 3022 * @hide not a public API 3023 */ 3024 public void addPackageNames(Set<String> packageNames) { 3025 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, packageNames); 3026 } 3027 3028 /** 3029 * Use this method to inform the webview about single packages that are 3030 * installed in the system. This information will be used by the 3031 * navigator.isApplicationInstalled() API. 3032 * @param packageName is the name of a package that is known to be 3033 * installed in the system. 3034 * 3035 * @hide not a public API 3036 */ 3037 public void addPackageName(String packageName) { 3038 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 3039 } 3040 3041 /** 3042 * Use this method to inform the webview about packages that are uninstalled 3043 * in the system. This information will be used by the 3044 * navigator.isApplicationInstalled() API. 3045 * @param packageName is the name of a package that has been uninstalled in 3046 * the system. 3047 * 3048 * @hide not a public API 3049 */ 3050 public void removePackageName(String packageName) { 3051 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 3052 } 3053 3054 /** 3055 * Return the list of currently loaded plugins. 3056 * @return The list of currently loaded plugins. 3057 * 3058 * @deprecated This was used for Gears, which has been deprecated. 3059 */ 3060 @Deprecated 3061 public static synchronized PluginList getPluginList() { 3062 return new PluginList(); 3063 } 3064 3065 /** 3066 * @deprecated This was used for Gears, which has been deprecated. 3067 */ 3068 @Deprecated 3069 public void refreshPlugins(boolean reloadOpenPages) { } 3070 3071 //------------------------------------------------------------------------- 3072 // Override View methods 3073 //------------------------------------------------------------------------- 3074 3075 @Override 3076 protected void finalize() throws Throwable { 3077 try { 3078 destroy(); 3079 } finally { 3080 super.finalize(); 3081 } 3082 } 3083 3084 @Override 3085 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3086 if (child == mTitleBar) { 3087 // When drawing the title bar, move it horizontally to always show 3088 // at the top of the WebView. While overscroll, stick the title bar 3089 // on the top otherwise we may have two during loading, one is drawn 3090 // here, another is drawn by the Browser. 3091 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3092 if (mScrollY <= 0) { 3093 mTitleBar.offsetTopAndBottom(mScrollY - mTitleBar.getTop()); 3094 } 3095 } 3096 return super.drawChild(canvas, child, drawingTime); 3097 } 3098 3099 private void drawContent(Canvas canvas) { 3100 // Update the buttons in the picture, so when we draw the picture 3101 // to the screen, they are in the correct state. 3102 // Tell the native side if user is a) touching the screen, 3103 // b) pressing the trackball down, or c) pressing the enter key 3104 // If the cursor is on a button, we need to draw it in the pressed 3105 // state. 3106 // If mNativeClass is 0, we should not reach here, so we do not 3107 // need to check it again. 3108 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3109 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3110 || mTrackballDown || mGotCenterDown, false); 3111 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3112 } 3113 3114 @Override 3115 protected void onDraw(Canvas canvas) { 3116 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3117 if (mNativeClass == 0) { 3118 return; 3119 } 3120 3121 // if both mContentWidth and mContentHeight are 0, it means there is no 3122 // valid Picture passed to WebView yet. This can happen when WebView 3123 // just starts. Draw the background and return. 3124 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3125 canvas.drawColor(mBackgroundColor); 3126 return; 3127 } 3128 3129 int saveCount = canvas.save(); 3130 if (mInOverScrollMode 3131 && getSettings().getUseSystemOverscrollBackground()) { 3132 if (mOverScrollBackground == null) { 3133 mOverScrollBackground = new Paint(); 3134 Bitmap bm = BitmapFactory.decodeResource( 3135 mContext.getResources(), 3136 com.android.internal.R.drawable.pattern_underwear); 3137 mOverScrollBackground.setShader(new BitmapShader(bm, 3138 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3139 } 3140 int top = getTitleHeight(); 3141 // first draw the background and anchor to the top of the view 3142 canvas.save(); 3143 canvas.translate(mScrollX, mScrollY); 3144 canvas.clipRect(-mScrollX, top - mScrollY, 3145 computeHorizontalScrollRange() - mScrollX, top 3146 + computeVerticalScrollRange() - mScrollY, 3147 Region.Op.DIFFERENCE); 3148 canvas.drawPaint(mOverScrollBackground); 3149 canvas.restore(); 3150 // next clip the region for the content 3151 canvas.clipRect(0, top, computeHorizontalScrollRange(), top 3152 + computeVerticalScrollRange()); 3153 } 3154 if (mTitleBar != null) { 3155 canvas.translate(0, (int) mTitleBar.getHeight()); 3156 } 3157 if (mDragTrackerHandler == null) { 3158 drawContent(canvas); 3159 } else { 3160 if (!mDragTrackerHandler.draw(canvas)) { 3161 // sometimes the tracker doesn't draw, even though its active 3162 drawContent(canvas); 3163 } 3164 if (mDragTrackerHandler.isFinished()) { 3165 mDragTrackerHandler = null; 3166 } 3167 } 3168 canvas.restoreToCount(saveCount); 3169 3170 // Now draw the shadow. 3171 int titleH = getVisibleTitleHeight(); 3172 if (mTitleBar != null && titleH == 0) { 3173 int height = (int) (5f * getContext().getResources() 3174 .getDisplayMetrics().density); 3175 mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(), 3176 mScrollY + height); 3177 mTitleShadow.draw(canvas); 3178 } 3179 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3180 invalidate(); 3181 } 3182 mWebViewCore.signalRepaintDone(); 3183 } 3184 3185 @Override 3186 public void setLayoutParams(ViewGroup.LayoutParams params) { 3187 if (params.height == LayoutParams.WRAP_CONTENT) { 3188 mWrapContent = true; 3189 } 3190 super.setLayoutParams(params); 3191 } 3192 3193 @Override 3194 public boolean performLongClick() { 3195 // performLongClick() is the result of a delayed message. If we switch 3196 // to windows overview, the WebView will be temporarily removed from the 3197 // view system. In that case, do nothing. 3198 if (getParent() == null) return false; 3199 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3200 // Send the click so that the textfield is in focus 3201 centerKeyPressOnTextField(); 3202 rebuildWebTextView(); 3203 } 3204 if (inEditingMode()) { 3205 return mWebTextView.performLongClick(); 3206 } else { 3207 return super.performLongClick(); 3208 } 3209 } 3210 3211 boolean inAnimateZoom() { 3212 return mZoomScale != 0; 3213 } 3214 3215 /** 3216 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3217 * has changed. This is especially important for password fields, which are 3218 * drawn by the WebTextView, since it conveys more information than what 3219 * webkit draws. Thus we need to reposition it to show in the correct 3220 * place. 3221 */ 3222 private boolean mNeedToAdjustWebTextView; 3223 3224 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3225 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3226 Rect vBox = contentToViewRect(contentBounds); 3227 Rect visibleRect = new Rect(); 3228 calcOurVisibleRect(visibleRect); 3229 // If the textfield is on screen, place the WebTextView in 3230 // its new place, accounting for our new scroll/zoom values, 3231 // and adjust its textsize. 3232 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3233 : visibleRect.contains(vBox)) { 3234 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3235 vBox.height()); 3236 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3237 contentToViewDimension( 3238 nativeFocusCandidateTextSize())); 3239 return true; 3240 } else { 3241 // The textfield is now off screen. The user probably 3242 // was not zooming to see the textfield better. Remove 3243 // the WebTextView. If the user types a key, and the 3244 // textfield is still in focus, we will reconstruct 3245 // the WebTextView and scroll it back on screen. 3246 mWebTextView.remove(); 3247 return false; 3248 } 3249 } 3250 3251 private void drawExtras(Canvas canvas, int extras) { 3252 // If mNativeClass is 0, we should not reach here, so we do not 3253 // need to check it again. 3254 // Currently for each draw we compute the animation values; 3255 // We may in the future decide to do that independently. 3256 if (nativeEvaluateLayersAnimations()) { 3257 // If we have unfinished (or unstarted) animations, 3258 // we ask for a repaint. 3259 invalidate(); 3260 } 3261 3262 nativeDrawExtras(canvas, extras); 3263 } 3264 3265 private void drawCoreAndCursorRing(Canvas canvas, int color, 3266 boolean drawCursorRing) { 3267 if (mDrawHistory) { 3268 canvas.scale(mActualScale, mActualScale); 3269 canvas.drawPicture(mHistoryPicture); 3270 return; 3271 } 3272 3273 boolean animateZoom = mZoomScale != 0; 3274 boolean animateScroll = ((!mScroller.isFinished() 3275 || mVelocityTracker != null) 3276 && (mTouchMode != TOUCH_DRAG_MODE || 3277 mHeldMotionless != MOTIONLESS_TRUE)) 3278 || mDeferTouchMode == TOUCH_DRAG_MODE; 3279 if (mTouchMode == TOUCH_DRAG_MODE) { 3280 if (mHeldMotionless == MOTIONLESS_PENDING) { 3281 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3282 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3283 mHeldMotionless = MOTIONLESS_FALSE; 3284 } 3285 if (mHeldMotionless == MOTIONLESS_FALSE) { 3286 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3287 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3288 mHeldMotionless = MOTIONLESS_PENDING; 3289 } 3290 } 3291 if (animateZoom) { 3292 float zoomScale; 3293 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 3294 if (interval < ZOOM_ANIMATION_LENGTH) { 3295 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 3296 zoomScale = 1.0f / (mInvInitialZoomScale 3297 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 3298 invalidate(); 3299 } else { 3300 zoomScale = mZoomScale; 3301 // set mZoomScale to be 0 as we have done animation 3302 mZoomScale = 0; 3303 WebViewCore.resumeUpdatePicture(mWebViewCore); 3304 // call invalidate() again to draw with the final filters 3305 invalidate(); 3306 if (mNeedToAdjustWebTextView) { 3307 mNeedToAdjustWebTextView = false; 3308 if (didUpdateTextViewBounds(false) 3309 && nativeFocusCandidateIsPassword()) { 3310 // If it is a password field, start drawing the 3311 // WebTextView once again. 3312 mWebTextView.setInPassword(true); 3313 } 3314 } 3315 } 3316 // calculate the intermediate scroll position. As we need to use 3317 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 3318 float scale = zoomScale * mInvInitialZoomScale; 3319 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 3320 - mZoomCenterX); 3321 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 3322 * zoomScale)) + mScrollX; 3323 int titleHeight = getTitleHeight(); 3324 int ty = Math.round(scale 3325 * (mInitialScrollY + mZoomCenterY - titleHeight) 3326 - (mZoomCenterY - titleHeight)); 3327 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 3328 - titleHeight, getViewHeight(), Math.round(mContentHeight 3329 * zoomScale)) + titleHeight) + mScrollY; 3330 canvas.translate(tx, ty); 3331 canvas.scale(zoomScale, zoomScale); 3332 if (inEditingMode() && !mNeedToAdjustWebTextView 3333 && mZoomScale != 0) { 3334 // The WebTextView is up. Keep track of this so we can adjust 3335 // its size and placement when we finish zooming 3336 mNeedToAdjustWebTextView = true; 3337 // If it is in password mode, turn it off so it does not draw 3338 // misplaced. 3339 if (nativeFocusCandidateIsPassword()) { 3340 mWebTextView.setInPassword(false); 3341 } 3342 } 3343 } else { 3344 canvas.scale(mActualScale, mActualScale); 3345 } 3346 3347 mWebViewCore.drawContentPicture(canvas, color, 3348 (animateZoom || mPreviewZoomOnly), animateScroll); 3349 if (mNativeClass == 0) return; 3350 // decide which adornments to draw 3351 int extras = DRAW_EXTRAS_NONE; 3352 if (mFindIsUp) { 3353 // When the FindDialog is up, only draw the matches if we are not in 3354 // the process of scrolling them into view. 3355 if (!animateScroll) { 3356 extras = DRAW_EXTRAS_FIND; 3357 } 3358 } else if (mShiftIsPressed && !nativeFocusIsPlugin()) { 3359 if (!animateZoom && !mPreviewZoomOnly) { 3360 extras = DRAW_EXTRAS_SELECTION; 3361 nativeSetSelectionRegion(mTouchSelection || mExtendSelection); 3362 nativeSetSelectionPointer(!mTouchSelection, mInvActualScale, 3363 mSelectX, mSelectY - getTitleHeight(), 3364 mExtendSelection); 3365 } 3366 } else if (drawCursorRing) { 3367 extras = DRAW_EXTRAS_CURSOR_RING; 3368 } 3369 drawExtras(canvas, extras); 3370 3371 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3372 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3373 mTouchMode = TOUCH_SHORTPRESS_MODE; 3374 HitTestResult hitTest = getHitTestResult(); 3375 if (hitTest == null 3376 || hitTest.mType == HitTestResult.UNKNOWN_TYPE) { 3377 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3378 } 3379 } 3380 } 3381 if (mFocusSizeChanged) { 3382 mFocusSizeChanged = false; 3383 // If we are zooming, this will get handled above, when the zoom 3384 // finishes. We also do not need to do this unless the WebTextView 3385 // is showing. 3386 if (!animateZoom && inEditingMode()) { 3387 didUpdateTextViewBounds(true); 3388 } 3389 } 3390 } 3391 3392 // draw history 3393 private boolean mDrawHistory = false; 3394 private Picture mHistoryPicture = null; 3395 private int mHistoryWidth = 0; 3396 private int mHistoryHeight = 0; 3397 3398 // Only check the flag, can be called from WebCore thread 3399 boolean drawHistory() { 3400 return mDrawHistory; 3401 } 3402 3403 // Should only be called in UI thread 3404 void switchOutDrawHistory() { 3405 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3406 if (mDrawHistory && mWebViewCore.pictureReady()) { 3407 mDrawHistory = false; 3408 invalidate(); 3409 int oldScrollX = mScrollX; 3410 int oldScrollY = mScrollY; 3411 mScrollX = pinLocX(mScrollX); 3412 mScrollY = pinLocY(mScrollY); 3413 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3414 mUserScroll = false; 3415 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3416 oldScrollY); 3417 } 3418 sendOurVisibleRect(); 3419 } 3420 } 3421 3422 WebViewCore.CursorData cursorData() { 3423 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3424 result.mMoveGeneration = nativeMoveGeneration(); 3425 result.mFrame = nativeCursorFramePointer(); 3426 Point position = nativeCursorPosition(); 3427 result.mX = position.x; 3428 result.mY = position.y; 3429 return result; 3430 } 3431 3432 /** 3433 * Delete text from start to end in the focused textfield. If there is no 3434 * focus, or if start == end, silently fail. If start and end are out of 3435 * order, swap them. 3436 * @param start Beginning of selection to delete. 3437 * @param end End of selection to delete. 3438 */ 3439 /* package */ void deleteSelection(int start, int end) { 3440 mTextGeneration++; 3441 WebViewCore.TextSelectionData data 3442 = new WebViewCore.TextSelectionData(start, end); 3443 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3444 data); 3445 } 3446 3447 /** 3448 * Set the selection to (start, end) in the focused textfield. If start and 3449 * end are out of order, swap them. 3450 * @param start Beginning of selection. 3451 * @param end End of selection. 3452 */ 3453 /* package */ void setSelection(int start, int end) { 3454 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3455 } 3456 3457 @Override 3458 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3459 InputConnection connection = super.onCreateInputConnection(outAttrs); 3460 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3461 return connection; 3462 } 3463 3464 /** 3465 * Called in response to a message from webkit telling us that the soft 3466 * keyboard should be launched. 3467 */ 3468 private void displaySoftKeyboard(boolean isTextView) { 3469 InputMethodManager imm = (InputMethodManager) 3470 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3471 3472 // bring it back to the default scale so that user can enter text 3473 boolean zoom = mActualScale < mDefaultScale; 3474 if (zoom) { 3475 mInZoomOverview = false; 3476 mZoomCenterX = mLastTouchX; 3477 mZoomCenterY = mLastTouchY; 3478 // do not change text wrap scale so that there is no reflow 3479 setNewZoomScale(mDefaultScale, false, false); 3480 } 3481 if (isTextView) { 3482 rebuildWebTextView(); 3483 if (inEditingMode()) { 3484 imm.showSoftInput(mWebTextView, 0); 3485 if (zoom) { 3486 didUpdateTextViewBounds(true); 3487 } 3488 return; 3489 } 3490 } 3491 // Used by plugins. 3492 // Also used if the navigation cache is out of date, and 3493 // does not recognize that a textfield is in focus. In that 3494 // case, use WebView as the targeted view. 3495 // see http://b/issue?id=2457459 3496 imm.showSoftInput(this, 0); 3497 } 3498 3499 // Called by WebKit to instruct the UI to hide the keyboard 3500 private void hideSoftKeyboard() { 3501 InputMethodManager imm = (InputMethodManager) 3502 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3503 3504 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3505 } 3506 3507 /* 3508 * This method checks the current focus and cursor and potentially rebuilds 3509 * mWebTextView to have the appropriate properties, such as password, 3510 * multiline, and what text it contains. It also removes it if necessary. 3511 */ 3512 /* package */ void rebuildWebTextView() { 3513 // If the WebView does not have focus, do nothing until it gains focus. 3514 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3515 return; 3516 } 3517 boolean alreadyThere = inEditingMode(); 3518 // inEditingMode can only return true if mWebTextView is non-null, 3519 // so we can safely call remove() if (alreadyThere) 3520 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3521 if (alreadyThere) { 3522 mWebTextView.remove(); 3523 } 3524 return; 3525 } 3526 // At this point, we know we have found an input field, so go ahead 3527 // and create the WebTextView if necessary. 3528 if (mWebTextView == null) { 3529 mWebTextView = new WebTextView(mContext, WebView.this); 3530 // Initialize our generation number. 3531 mTextGeneration = 0; 3532 } 3533 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3534 contentToViewDimension(nativeFocusCandidateTextSize())); 3535 Rect visibleRect = new Rect(); 3536 calcOurContentVisibleRect(visibleRect); 3537 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3538 // should be in content coordinates. 3539 Rect bounds = nativeFocusCandidateNodeBounds(); 3540 Rect vBox = contentToViewRect(bounds); 3541 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3542 if (!Rect.intersects(bounds, visibleRect)) { 3543 mWebTextView.bringIntoView(); 3544 } 3545 String text = nativeFocusCandidateText(); 3546 int nodePointer = nativeFocusCandidatePointer(); 3547 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3548 // It is possible that we have the same textfield, but it has moved, 3549 // i.e. In the case of opening/closing the screen. 3550 // In that case, we need to set the dimensions, but not the other 3551 // aspects. 3552 // If the text has been changed by webkit, update it. However, if 3553 // there has been more UI text input, ignore it. We will receive 3554 // another update when that text is recognized. 3555 if (text != null && !text.equals(mWebTextView.getText().toString()) 3556 && nativeTextGeneration() == mTextGeneration) { 3557 mWebTextView.setTextAndKeepSelection(text); 3558 } 3559 } else { 3560 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3561 Gravity.RIGHT : Gravity.NO_GRAVITY); 3562 // This needs to be called before setType, which may call 3563 // requestFormData, and it needs to have the correct nodePointer. 3564 mWebTextView.setNodePointer(nodePointer); 3565 mWebTextView.setType(nativeFocusCandidateType()); 3566 if (null == text) { 3567 if (DebugFlags.WEB_VIEW) { 3568 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3569 } 3570 text = ""; 3571 } 3572 mWebTextView.setTextAndKeepSelection(text); 3573 InputMethodManager imm = InputMethodManager.peekInstance(); 3574 if (imm != null && imm.isActive(mWebTextView)) { 3575 imm.restartInput(mWebTextView); 3576 } 3577 } 3578 mWebTextView.requestFocus(); 3579 } 3580 3581 /** 3582 * Called by WebTextView to find saved form data associated with the 3583 * textfield 3584 * @param name Name of the textfield. 3585 * @param nodePointer Pointer to the node of the textfield, so it can be 3586 * compared to the currently focused textfield when the data is 3587 * retrieved. 3588 */ 3589 /* package */ void requestFormData(String name, int nodePointer) { 3590 if (mWebViewCore.getSettings().getSaveFormData()) { 3591 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3592 update.arg1 = nodePointer; 3593 RequestFormData updater = new RequestFormData(name, getUrl(), 3594 update); 3595 Thread t = new Thread(updater); 3596 t.start(); 3597 } 3598 } 3599 3600 /** 3601 * Pass a message to find out the <label> associated with the <input> 3602 * identified by nodePointer 3603 * @param framePointer Pointer to the frame containing the <input> node 3604 * @param nodePointer Pointer to the node for which a <label> is desired. 3605 */ 3606 /* package */ void requestLabel(int framePointer, int nodePointer) { 3607 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3608 nodePointer); 3609 } 3610 3611 /* 3612 * This class requests an Adapter for the WebTextView which shows past 3613 * entries stored in the database. It is a Runnable so that it can be done 3614 * in its own thread, without slowing down the UI. 3615 */ 3616 private class RequestFormData implements Runnable { 3617 private String mName; 3618 private String mUrl; 3619 private Message mUpdateMessage; 3620 3621 public RequestFormData(String name, String url, Message msg) { 3622 mName = name; 3623 mUrl = url; 3624 mUpdateMessage = msg; 3625 } 3626 3627 public void run() { 3628 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3629 if (pastEntries.size() > 0) { 3630 AutoCompleteAdapter adapter = new 3631 AutoCompleteAdapter(mContext, pastEntries); 3632 mUpdateMessage.obj = adapter; 3633 mUpdateMessage.sendToTarget(); 3634 } 3635 } 3636 } 3637 3638 /** 3639 * Dump the display tree to "/sdcard/displayTree.txt" 3640 * 3641 * @hide debug only 3642 */ 3643 public void dumpDisplayTree() { 3644 nativeDumpDisplayTree(getUrl()); 3645 } 3646 3647 /** 3648 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 3649 * "/sdcard/domTree.txt" 3650 * 3651 * @hide debug only 3652 */ 3653 public void dumpDomTree(boolean toFile) { 3654 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 3655 } 3656 3657 /** 3658 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 3659 * to "/sdcard/renderTree.txt" 3660 * 3661 * @hide debug only 3662 */ 3663 public void dumpRenderTree(boolean toFile) { 3664 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 3665 } 3666 3667 /** 3668 * Dump the V8 counters to standard output. 3669 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 3670 * true. Otherwise, this will do nothing. 3671 * 3672 * @hide debug only 3673 */ 3674 public void dumpV8Counters() { 3675 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 3676 } 3677 3678 // This is used to determine long press with the center key. Does not 3679 // affect long press with the trackball/touch. 3680 private boolean mGotCenterDown = false; 3681 3682 @Override 3683 public boolean onKeyDown(int keyCode, KeyEvent event) { 3684 if (DebugFlags.WEB_VIEW) { 3685 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3686 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3687 } 3688 3689 if (mNativeClass == 0) { 3690 return false; 3691 } 3692 3693 // do this hack up front, so it always works, regardless of touch-mode 3694 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3695 mAutoRedraw = !mAutoRedraw; 3696 if (mAutoRedraw) { 3697 invalidate(); 3698 } 3699 return true; 3700 } 3701 3702 // Bubble up the key event if 3703 // 1. it is a system key; or 3704 // 2. the host application wants to handle it; 3705 if (event.isSystem() 3706 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3707 return false; 3708 } 3709 3710 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3711 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3712 if (nativeFocusIsPlugin()) { 3713 mShiftIsPressed = true; 3714 } else if (!nativeCursorWantsKeyEvents() && !mShiftIsPressed) { 3715 setUpSelectXY(); 3716 } 3717 } 3718 3719 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3720 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3721 switchOutDrawHistory(); 3722 if (nativeFocusIsPlugin()) { 3723 letPluginHandleNavKey(keyCode, event.getEventTime(), true); 3724 return true; 3725 } 3726 if (mShiftIsPressed) { 3727 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 3728 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 3729 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 3730 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 3731 int multiplier = event.getRepeatCount() + 1; 3732 moveSelection(xRate * multiplier, yRate * multiplier); 3733 return true; 3734 } 3735 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 3736 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3737 return true; 3738 } 3739 // Bubble up the key event as WebView doesn't handle it 3740 return false; 3741 } 3742 3743 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3744 switchOutDrawHistory(); 3745 if (event.getRepeatCount() == 0) { 3746 if (mShiftIsPressed && !nativeFocusIsPlugin()) { 3747 return true; // discard press if copy in progress 3748 } 3749 mGotCenterDown = true; 3750 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3751 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3752 // Already checked mNativeClass, so we do not need to check it 3753 // again. 3754 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3755 return true; 3756 } 3757 // Bubble up the key event as WebView doesn't handle it 3758 return false; 3759 } 3760 3761 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3762 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3763 // turn off copy select if a shift-key combo is pressed 3764 mExtendSelection = mShiftIsPressed = false; 3765 if (mTouchMode == TOUCH_SELECT_MODE) { 3766 mTouchMode = TOUCH_INIT_MODE; 3767 } 3768 } 3769 3770 if (getSettings().getNavDump()) { 3771 switch (keyCode) { 3772 case KeyEvent.KEYCODE_4: 3773 dumpDisplayTree(); 3774 break; 3775 case KeyEvent.KEYCODE_5: 3776 case KeyEvent.KEYCODE_6: 3777 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 3778 break; 3779 case KeyEvent.KEYCODE_7: 3780 case KeyEvent.KEYCODE_8: 3781 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 3782 break; 3783 case KeyEvent.KEYCODE_9: 3784 nativeInstrumentReport(); 3785 return true; 3786 } 3787 } 3788 3789 if (nativeCursorIsTextInput()) { 3790 // This message will put the node in focus, for the DOM's notion 3791 // of focus, and make the focuscontroller active 3792 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3793 nativeCursorNodePointer()); 3794 // This will bring up the WebTextView and put it in focus, for 3795 // our view system's notion of focus 3796 rebuildWebTextView(); 3797 // Now we need to pass the event to it 3798 if (inEditingMode()) { 3799 mWebTextView.setDefaultSelection(); 3800 return mWebTextView.dispatchKeyEvent(event); 3801 } 3802 } else if (nativeHasFocusNode()) { 3803 // In this case, the cursor is not on a text input, but the focus 3804 // might be. Check it, and if so, hand over to the WebTextView. 3805 rebuildWebTextView(); 3806 if (inEditingMode()) { 3807 mWebTextView.setDefaultSelection(); 3808 return mWebTextView.dispatchKeyEvent(event); 3809 } 3810 } 3811 3812 // TODO: should we pass all the keys to DOM or check the meta tag 3813 if (nativeCursorWantsKeyEvents() || true) { 3814 // pass the key to DOM 3815 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3816 // return true as DOM handles the key 3817 return true; 3818 } 3819 3820 // Bubble up the key event as WebView doesn't handle it 3821 return false; 3822 } 3823 3824 @Override 3825 public boolean onKeyUp(int keyCode, KeyEvent event) { 3826 if (DebugFlags.WEB_VIEW) { 3827 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3828 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3829 } 3830 3831 if (mNativeClass == 0) { 3832 return false; 3833 } 3834 3835 // special CALL handling when cursor node's href is "tel:XXX" 3836 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3837 String text = nativeCursorText(); 3838 if (!nativeCursorIsTextInput() && text != null 3839 && text.startsWith(SCHEME_TEL)) { 3840 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3841 getContext().startActivity(intent); 3842 return true; 3843 } 3844 } 3845 3846 // Bubble up the key event if 3847 // 1. it is a system key; or 3848 // 2. the host application wants to handle it; 3849 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3850 return false; 3851 } 3852 3853 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3854 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3855 if (nativeFocusIsPlugin()) { 3856 mShiftIsPressed = false; 3857 return true; 3858 } else if (commitCopy()) { 3859 return true; 3860 } 3861 } 3862 3863 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3864 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3865 if (nativeFocusIsPlugin()) { 3866 letPluginHandleNavKey(keyCode, event.getEventTime(), false); 3867 return true; 3868 } 3869 // always handle the navigation keys in the UI thread 3870 // Bubble up the key event as WebView doesn't handle it 3871 return false; 3872 } 3873 3874 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3875 // remove the long press message first 3876 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3877 mGotCenterDown = false; 3878 3879 if (mShiftIsPressed && !nativeFocusIsPlugin()) { 3880 if (mExtendSelection) { 3881 commitCopy(); 3882 } else { 3883 mExtendSelection = true; 3884 invalidate(); // draw the i-beam instead of the arrow 3885 } 3886 return true; // discard press if copy in progress 3887 } 3888 3889 // perform the single click 3890 Rect visibleRect = sendOurVisibleRect(); 3891 // Note that sendOurVisibleRect calls viewToContent, so the 3892 // coordinates should be in content coordinates. 3893 if (!nativeCursorIntersects(visibleRect)) { 3894 return false; 3895 } 3896 WebViewCore.CursorData data = cursorData(); 3897 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3898 playSoundEffect(SoundEffectConstants.CLICK); 3899 if (nativeCursorIsTextInput()) { 3900 rebuildWebTextView(); 3901 centerKeyPressOnTextField(); 3902 if (inEditingMode()) { 3903 mWebTextView.setDefaultSelection(); 3904 } 3905 return true; 3906 } 3907 clearTextEntry(true); 3908 nativeSetFollowedLink(true); 3909 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 3910 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3911 nativeCursorNodePointer()); 3912 } 3913 return true; 3914 } 3915 3916 // TODO: should we pass all the keys to DOM or check the meta tag 3917 if (nativeCursorWantsKeyEvents() || true) { 3918 // pass the key to DOM 3919 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3920 // return true as DOM handles the key 3921 return true; 3922 } 3923 3924 // Bubble up the key event as WebView doesn't handle it 3925 return false; 3926 } 3927 3928 private void setUpSelectXY() { 3929 mExtendSelection = false; 3930 mShiftIsPressed = true; 3931 if (nativeHasCursorNode()) { 3932 Rect rect = nativeCursorNodeBounds(); 3933 mSelectX = contentToViewX(rect.left); 3934 mSelectY = contentToViewY(rect.top); 3935 } else if (mLastTouchY > getVisibleTitleHeight()) { 3936 mSelectX = mScrollX + (int) mLastTouchX; 3937 mSelectY = mScrollY + (int) mLastTouchY; 3938 } else { 3939 mSelectX = mScrollX + getViewWidth() / 2; 3940 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 3941 } 3942 nativeHideCursor(); 3943 } 3944 3945 /** 3946 * Use this method to put the WebView into text selection mode. 3947 * Do not rely on this functionality; it will be deprecated in the future. 3948 */ 3949 public void emulateShiftHeld() { 3950 if (0 == mNativeClass) return; // client isn't initialized 3951 setUpSelectXY(); 3952 } 3953 3954 private boolean commitCopy() { 3955 boolean copiedSomething = false; 3956 if (mExtendSelection) { 3957 String selection = nativeGetSelection(); 3958 if (selection != "") { 3959 if (DebugFlags.WEB_VIEW) { 3960 Log.v(LOGTAG, "commitCopy \"" + selection + "\""); 3961 } 3962 Toast.makeText(mContext 3963 , com.android.internal.R.string.text_copied 3964 , Toast.LENGTH_SHORT).show(); 3965 copiedSomething = true; 3966 try { 3967 IClipboard clip = IClipboard.Stub.asInterface( 3968 ServiceManager.getService("clipboard")); 3969 clip.setClipboardText(selection); 3970 } catch (android.os.RemoteException e) { 3971 Log.e(LOGTAG, "Clipboard failed", e); 3972 } 3973 } 3974 mExtendSelection = false; 3975 } 3976 mShiftIsPressed = false; 3977 invalidate(); // remove selection region and pointer 3978 if (mTouchMode == TOUCH_SELECT_MODE) { 3979 mTouchMode = TOUCH_INIT_MODE; 3980 } 3981 return copiedSomething; 3982 } 3983 3984 @Override 3985 protected void onAttachedToWindow() { 3986 super.onAttachedToWindow(); 3987 if (hasWindowFocus()) onWindowFocusChanged(true); 3988 } 3989 3990 @Override 3991 protected void onDetachedFromWindow() { 3992 clearTextEntry(false); 3993 super.onDetachedFromWindow(); 3994 // Clean up the zoom controller 3995 mZoomButtonsController.setVisible(false); 3996 } 3997 3998 /** 3999 * @deprecated WebView no longer needs to implement 4000 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4001 */ 4002 @Deprecated 4003 public void onChildViewAdded(View parent, View child) {} 4004 4005 /** 4006 * @deprecated WebView no longer needs to implement 4007 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4008 */ 4009 @Deprecated 4010 public void onChildViewRemoved(View p, View child) {} 4011 4012 /** 4013 * @deprecated WebView should not have implemented 4014 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 4015 * does nothing now. 4016 */ 4017 @Deprecated 4018 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4019 } 4020 4021 // To avoid drawing the cursor ring, and remove the TextView when our window 4022 // loses focus. 4023 @Override 4024 public void onWindowFocusChanged(boolean hasWindowFocus) { 4025 if (hasWindowFocus) { 4026 if (hasFocus()) { 4027 // If our window regained focus, and we have focus, then begin 4028 // drawing the cursor ring 4029 mDrawCursorRing = true; 4030 if (mNativeClass != 0) { 4031 nativeRecordButtons(true, false, true); 4032 if (inEditingMode()) { 4033 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 4034 } 4035 } 4036 } else { 4037 // If our window gained focus, but we do not have it, do not 4038 // draw the cursor ring. 4039 mDrawCursorRing = false; 4040 // We do not call nativeRecordButtons here because we assume 4041 // that when we lost focus, or window focus, it got called with 4042 // false for the first parameter 4043 } 4044 } else { 4045 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 4046 /* 4047 * The zoom controls come in their own window, so our window 4048 * loses focus. Our policy is to not draw the cursor ring if 4049 * our window is not focused, but this is an exception since 4050 * the user can still navigate the web page with the zoom 4051 * controls showing. 4052 */ 4053 // If our window has lost focus, stop drawing the cursor ring 4054 mDrawCursorRing = false; 4055 } 4056 mGotKeyDown = false; 4057 mShiftIsPressed = false; 4058 if (mNativeClass != 0) { 4059 nativeRecordButtons(false, false, true); 4060 } 4061 setFocusControllerInactive(); 4062 } 4063 invalidate(); 4064 super.onWindowFocusChanged(hasWindowFocus); 4065 } 4066 4067 /* 4068 * Pass a message to WebCore Thread, telling the WebCore::Page's 4069 * FocusController to be "inactive" so that it will 4070 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4071 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4072 */ 4073 /* package */ void setFocusControllerInactive() { 4074 // Do not need to also check whether mWebViewCore is null, because 4075 // mNativeClass is only set if mWebViewCore is non null 4076 if (mNativeClass == 0) return; 4077 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 4078 } 4079 4080 @Override 4081 protected void onFocusChanged(boolean focused, int direction, 4082 Rect previouslyFocusedRect) { 4083 if (DebugFlags.WEB_VIEW) { 4084 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4085 } 4086 if (focused) { 4087 // When we regain focus, if we have window focus, resume drawing 4088 // the cursor ring 4089 if (hasWindowFocus()) { 4090 mDrawCursorRing = true; 4091 if (mNativeClass != 0) { 4092 nativeRecordButtons(true, false, true); 4093 } 4094 //} else { 4095 // The WebView has gained focus while we do not have 4096 // windowfocus. When our window lost focus, we should have 4097 // called nativeRecordButtons(false...) 4098 } 4099 } else { 4100 // When we lost focus, unless focus went to the TextView (which is 4101 // true if we are in editing mode), stop drawing the cursor ring. 4102 if (!inEditingMode()) { 4103 mDrawCursorRing = false; 4104 if (mNativeClass != 0) { 4105 nativeRecordButtons(false, false, true); 4106 } 4107 setFocusControllerInactive(); 4108 } 4109 mGotKeyDown = false; 4110 } 4111 4112 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4113 } 4114 4115 /** 4116 * @hide 4117 */ 4118 @Override 4119 protected boolean setFrame(int left, int top, int right, int bottom) { 4120 boolean changed = super.setFrame(left, top, right, bottom); 4121 if (!changed && mHeightCanMeasure) { 4122 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4123 // in WebViewCore after we get the first layout. We do call 4124 // requestLayout() when we get contentSizeChanged(). But the View 4125 // system won't call onSizeChanged if the dimension is not changed. 4126 // In this case, we need to call sendViewSizeZoom() explicitly to 4127 // notify the WebKit about the new dimensions. 4128 sendViewSizeZoom(); 4129 } 4130 return changed; 4131 } 4132 4133 private static class PostScale implements Runnable { 4134 final WebView mWebView; 4135 final boolean mUpdateTextWrap; 4136 4137 public PostScale(WebView webView, boolean updateTextWrap) { 4138 mWebView = webView; 4139 mUpdateTextWrap = updateTextWrap; 4140 } 4141 4142 public void run() { 4143 if (mWebView.mWebViewCore != null) { 4144 // we always force, in case our height changed, in which case we 4145 // still want to send the notification over to webkit. 4146 mWebView.setNewZoomScale(mWebView.mActualScale, 4147 mUpdateTextWrap, true); 4148 // update the zoom buttons as the scale can be changed 4149 if (mWebView.getSettings().getBuiltInZoomControls()) { 4150 mWebView.updateZoomButtonsEnabled(); 4151 } 4152 } 4153 } 4154 } 4155 4156 @Override 4157 protected void onSizeChanged(int w, int h, int ow, int oh) { 4158 super.onSizeChanged(w, h, ow, oh); 4159 // Center zooming to the center of the screen. 4160 if (mZoomScale == 0) { // unless we're already zooming 4161 // To anchor at top left corner. 4162 mZoomCenterX = 0; 4163 mZoomCenterY = getVisibleTitleHeight(); 4164 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4165 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4166 } 4167 4168 // adjust the max viewport width depending on the view dimensions. This 4169 // is to ensure the scaling is not going insane. So do not shrink it if 4170 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4171 int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE); 4172 if (newMaxViewportWidth > sMaxViewportWidth) { 4173 sMaxViewportWidth = newMaxViewportWidth; 4174 } 4175 4176 // update mMinZoomScale if the minimum zoom scale is not fixed 4177 if (!mMinZoomScaleFixed) { 4178 // when change from narrow screen to wide screen, the new viewWidth 4179 // can be wider than the old content width. We limit the minimum 4180 // scale to 1.0f. The proper minimum scale will be calculated when 4181 // the new picture shows up. 4182 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 4183 / (mDrawHistory ? mHistoryPicture.getWidth() 4184 : mZoomOverviewWidth)); 4185 if (mInitialScaleInPercent > 0) { 4186 // limit the minZoomScale to the initialScale if it is set 4187 float initialScale = mInitialScaleInPercent / 100.0f; 4188 if (mMinZoomScale > initialScale) { 4189 mMinZoomScale = initialScale; 4190 } 4191 } 4192 } 4193 4194 // onSizeChanged() is called during WebView layout. And any 4195 // requestLayout() is blocked during layout. As setNewZoomScale() will 4196 // call its child View to reposition itself through ViewManager's 4197 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 4198 // <b/> 4199 // only update the text wrap scale if width changed. 4200 post(new PostScale(this, w != ow)); 4201 } 4202 4203 @Override 4204 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4205 super.onScrollChanged(l, t, oldl, oldt); 4206 sendOurVisibleRect(); 4207 // update WebKit if visible title bar height changed. The logic is same 4208 // as getVisibleTitleHeight. 4209 int titleHeight = getTitleHeight(); 4210 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4211 sendViewSizeZoom(); 4212 } 4213 } 4214 4215 @Override 4216 public boolean dispatchKeyEvent(KeyEvent event) { 4217 boolean dispatch = true; 4218 4219 // Textfields and plugins need to receive the shift up key even if 4220 // another key was released while the shift key was held down. 4221 if (!inEditingMode() && (mNativeClass == 0 || !nativeFocusIsPlugin())) { 4222 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4223 mGotKeyDown = true; 4224 } else { 4225 if (!mGotKeyDown) { 4226 /* 4227 * We got a key up for which we were not the recipient of 4228 * the original key down. Don't give it to the view. 4229 */ 4230 dispatch = false; 4231 } 4232 mGotKeyDown = false; 4233 } 4234 } 4235 4236 if (dispatch) { 4237 return super.dispatchKeyEvent(event); 4238 } else { 4239 // We didn't dispatch, so let something else handle the key 4240 return false; 4241 } 4242 } 4243 4244 // Here are the snap align logic: 4245 // 1. If it starts nearly horizontally or vertically, snap align; 4246 // 2. If there is a dramitic direction change, let it go; 4247 // 3. If there is a same direction back and forth, lock it. 4248 4249 // adjustable parameters 4250 private int mMinLockSnapReverseDistance; 4251 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4252 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4253 4254 private static int sign(float x) { 4255 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4256 } 4257 4258 // if the page can scroll <= this value, we won't allow the drag tracker 4259 // to have any effect. 4260 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4261 4262 private class DragTrackerHandler { 4263 private final DragTracker mProxy; 4264 private final float mStartY, mStartX; 4265 private final float mMinDY, mMinDX; 4266 private final float mMaxDY, mMaxDX; 4267 private float mCurrStretchY, mCurrStretchX; 4268 private int mSX, mSY; 4269 private Interpolator mInterp; 4270 private float[] mXY = new float[2]; 4271 4272 // inner (non-state) classes can't have enums :( 4273 private static final int DRAGGING_STATE = 0; 4274 private static final int ANIMATING_STATE = 1; 4275 private static final int FINISHED_STATE = 2; 4276 private int mState; 4277 4278 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4279 mProxy = proxy; 4280 4281 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4282 int viewTop = getScrollY(); 4283 int viewBottom = viewTop + getHeight(); 4284 4285 mStartY = y; 4286 mMinDY = -viewTop; 4287 mMaxDY = docBottom - viewBottom; 4288 4289 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4290 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4291 " up/down= " + mMinDY + " " + mMaxDY); 4292 } 4293 4294 int docRight = computeHorizontalScrollRange(); 4295 int viewLeft = getScrollX(); 4296 int viewRight = viewLeft + getWidth(); 4297 mStartX = x; 4298 mMinDX = -viewLeft; 4299 mMaxDX = docRight - viewRight; 4300 4301 mState = DRAGGING_STATE; 4302 mProxy.onStartDrag(x, y); 4303 4304 // ensure we buildBitmap at least once 4305 mSX = -99999; 4306 } 4307 4308 private float computeStretch(float delta, float min, float max) { 4309 float stretch = 0; 4310 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4311 if (delta < min) { 4312 stretch = delta - min; 4313 } else if (delta > max) { 4314 stretch = delta - max; 4315 } 4316 } 4317 return stretch; 4318 } 4319 4320 public void dragTo(float x, float y) { 4321 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4322 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4323 4324 if ((mSnapScrollMode & SNAP_X) != 0) { 4325 sy = 0; 4326 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4327 sx = 0; 4328 } 4329 4330 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4331 mCurrStretchX = sx; 4332 mCurrStretchY = sy; 4333 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4334 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4335 " " + sy); 4336 } 4337 if (mProxy.onStretchChange(sx, sy)) { 4338 invalidate(); 4339 } 4340 } 4341 } 4342 4343 public void stopDrag() { 4344 final int DURATION = 200; 4345 int now = (int)SystemClock.uptimeMillis(); 4346 mInterp = new Interpolator(2); 4347 mXY[0] = mCurrStretchX; 4348 mXY[1] = mCurrStretchY; 4349 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4350 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4351 mInterp.setKeyFrame(0, now, mXY, blend); 4352 float[] zerozero = new float[] { 0, 0 }; 4353 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4354 mState = ANIMATING_STATE; 4355 4356 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4357 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4358 } 4359 } 4360 4361 // Call this after each draw. If it ruturns null, the tracker is done 4362 public boolean isFinished() { 4363 return mState == FINISHED_STATE; 4364 } 4365 4366 private int hiddenHeightOfTitleBar() { 4367 return getTitleHeight() - getVisibleTitleHeight(); 4368 } 4369 4370 // need a way to know if 565 or 8888 is the right config for 4371 // capturing the display and giving it to the drag proxy 4372 private Bitmap.Config offscreenBitmapConfig() { 4373 // hard code 565 for now 4374 return Bitmap.Config.RGB_565; 4375 } 4376 4377 /* If the tracker draws, then this returns true, otherwise it will 4378 return false, and draw nothing. 4379 */ 4380 public boolean draw(Canvas canvas) { 4381 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4382 int sx = getScrollX(); 4383 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4384 if (mSX != sx || mSY != sy) { 4385 buildBitmap(sx, sy); 4386 mSX = sx; 4387 mSY = sy; 4388 } 4389 4390 if (mState == ANIMATING_STATE) { 4391 Interpolator.Result result = mInterp.timeToValues(mXY); 4392 if (result == Interpolator.Result.FREEZE_END) { 4393 mState = FINISHED_STATE; 4394 return false; 4395 } else { 4396 mProxy.onStretchChange(mXY[0], mXY[1]); 4397 invalidate(); 4398 // fall through to the draw 4399 } 4400 } 4401 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4402 canvas.translate(sx, sy); 4403 mProxy.onDraw(canvas); 4404 canvas.restoreToCount(count); 4405 return true; 4406 } 4407 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4408 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4409 mCurrStretchX + " " + mCurrStretchY); 4410 } 4411 return false; 4412 } 4413 4414 private void buildBitmap(int sx, int sy) { 4415 int w = getWidth(); 4416 int h = getViewHeight(); 4417 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4418 Canvas canvas = new Canvas(bm); 4419 canvas.translate(-sx, -sy); 4420 drawContent(canvas); 4421 4422 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4423 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4424 " " + sy + " " + w + " " + h); 4425 } 4426 mProxy.onBitmapChange(bm); 4427 } 4428 } 4429 4430 /** @hide */ 4431 public static class DragTracker { 4432 public void onStartDrag(float x, float y) {} 4433 public boolean onStretchChange(float sx, float sy) { 4434 // return true to have us inval the view 4435 return false; 4436 } 4437 public void onStopDrag() {} 4438 public void onBitmapChange(Bitmap bm) {} 4439 public void onDraw(Canvas canvas) {} 4440 } 4441 4442 /** @hide */ 4443 public DragTracker getDragTracker() { 4444 return mDragTracker; 4445 } 4446 4447 /** @hide */ 4448 public void setDragTracker(DragTracker tracker) { 4449 mDragTracker = tracker; 4450 } 4451 4452 private DragTracker mDragTracker; 4453 private DragTrackerHandler mDragTrackerHandler; 4454 4455 private class ScaleDetectorListener implements 4456 ScaleGestureDetector.OnScaleGestureListener { 4457 4458 public boolean onScaleBegin(ScaleGestureDetector detector) { 4459 // cancel the single touch handling 4460 cancelTouch(); 4461 if (mZoomButtonsController.isVisible()) { 4462 mZoomButtonsController.setVisible(false); 4463 } 4464 // reset the zoom overview mode so that the page won't auto grow 4465 mInZoomOverview = false; 4466 // If it is in password mode, turn it off so it does not draw 4467 // misplaced. 4468 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4469 mWebTextView.setInPassword(false); 4470 } 4471 return true; 4472 } 4473 4474 public void onScaleEnd(ScaleGestureDetector detector) { 4475 if (mPreviewZoomOnly) { 4476 mPreviewZoomOnly = false; 4477 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4478 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4479 // don't reflow when zoom in; when zoom out, do reflow if the 4480 // new scale is almost minimum scale; 4481 boolean reflowNow = (mActualScale - mMinZoomScale 4482 <= MINIMUM_SCALE_INCREMENT) 4483 || ((mActualScale <= 0.8 * mTextWrapScale)); 4484 // force zoom after mPreviewZoomOnly is set to false so that the 4485 // new view size will be passed to the WebKit 4486 setNewZoomScale(mActualScale, reflowNow, true); 4487 // call invalidate() to draw without zoom filter 4488 invalidate(); 4489 } 4490 // adjust the edit text view if needed 4491 if (inEditingMode() && didUpdateTextViewBounds(false) 4492 && nativeFocusCandidateIsPassword()) { 4493 // If it is a password field, start drawing the 4494 // WebTextView once again. 4495 mWebTextView.setInPassword(true); 4496 } 4497 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4498 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4499 // may trigger the unwanted fling. 4500 mTouchMode = TOUCH_PINCH_DRAG; 4501 mConfirmMove = true; 4502 startTouch(detector.getFocusX(), detector.getFocusY(), 4503 mLastTouchTime); 4504 } 4505 4506 public boolean onScale(ScaleGestureDetector detector) { 4507 float scale = (float) (Math.round(detector.getScaleFactor() 4508 * mActualScale * 100) / 100.0); 4509 if (Math.abs(scale - mActualScale) >= MINIMUM_SCALE_INCREMENT) { 4510 mPreviewZoomOnly = true; 4511 // limit the scale change per step 4512 if (scale > mActualScale) { 4513 scale = Math.min(scale, mActualScale * 1.25f); 4514 } else { 4515 scale = Math.max(scale, mActualScale * 0.8f); 4516 } 4517 mZoomCenterX = detector.getFocusX(); 4518 mZoomCenterY = detector.getFocusY(); 4519 setNewZoomScale(scale, false, false); 4520 invalidate(); 4521 return true; 4522 } 4523 return false; 4524 } 4525 } 4526 4527 private boolean hitFocusedPlugin(int contentX, int contentY) { 4528 return nativeFocusIsPlugin() 4529 && nativePointInNavCache(contentX, contentY, mNavSlop) 4530 && nativeCacheHitNodePointer() == nativeFocusNodePointer(); 4531 } 4532 4533 private boolean shouldForwardTouchEvent() { 4534 return mFullScreenHolder != null || (mForwardTouchEvents 4535 && mTouchMode != TOUCH_SELECT_MODE 4536 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 4537 } 4538 4539 private boolean inFullScreenMode() { 4540 return mFullScreenHolder != null; 4541 } 4542 4543 @Override 4544 public boolean onTouchEvent(MotionEvent ev) { 4545 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4546 return false; 4547 } 4548 4549 if (DebugFlags.WEB_VIEW) { 4550 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4551 + mTouchMode); 4552 } 4553 4554 int action; 4555 float x, y; 4556 long eventTime = ev.getEventTime(); 4557 4558 // FIXME: we may consider to give WebKit an option to handle multi-touch 4559 // events later. 4560 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 4561 if (mMinZoomScale < mMaxZoomScale) { 4562 mScaleDetector.onTouchEvent(ev); 4563 if (mScaleDetector.isInProgress()) { 4564 mLastTouchTime = eventTime; 4565 return true; 4566 } 4567 x = mScaleDetector.getFocusX(); 4568 y = mScaleDetector.getFocusY(); 4569 action = ev.getAction() & MotionEvent.ACTION_MASK; 4570 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4571 cancelTouch(); 4572 action = MotionEvent.ACTION_DOWN; 4573 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4574 // set mLastTouchX/Y to the remaining point 4575 mLastTouchX = x; 4576 mLastTouchY = y; 4577 } else if (action == MotionEvent.ACTION_MOVE) { 4578 // negative x or y indicate it is on the edge, skip it. 4579 if (x < 0 || y < 0) { 4580 return true; 4581 } 4582 } 4583 } else { 4584 // if the page disallow zoom, skip multi-pointer action 4585 return true; 4586 } 4587 } else { 4588 action = ev.getAction(); 4589 x = ev.getX(); 4590 y = ev.getY(); 4591 } 4592 4593 // Due to the touch screen edge effect, a touch closer to the edge 4594 // always snapped to the edge. As getViewWidth() can be different from 4595 // getWidth() due to the scrollbar, adjusting the point to match 4596 // getViewWidth(). Same applied to the height. 4597 if (x > getViewWidth() - 1) { 4598 x = getViewWidth() - 1; 4599 } 4600 if (y > getViewHeightWithTitle() - 1) { 4601 y = getViewHeightWithTitle() - 1; 4602 } 4603 4604 float fDeltaX = mLastTouchX - x; 4605 float fDeltaY = mLastTouchY - y; 4606 int deltaX = (int) fDeltaX; 4607 int deltaY = (int) fDeltaY; 4608 int contentX = viewToContentX((int) x + mScrollX); 4609 int contentY = viewToContentY((int) y + mScrollY); 4610 4611 switch (action) { 4612 case MotionEvent.ACTION_DOWN: { 4613 mPreventDefault = PREVENT_DEFAULT_NO; 4614 mConfirmMove = false; 4615 if (!mScroller.isFinished()) { 4616 // stop the current scroll animation, but if this is 4617 // the start of a fling, allow it to add to the current 4618 // fling's velocity 4619 mScroller.abortAnimation(); 4620 mTouchMode = TOUCH_DRAG_START_MODE; 4621 mConfirmMove = true; 4622 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 4623 } else if (!inFullScreenMode() && mShiftIsPressed) { 4624 mSelectX = mScrollX + (int) x; 4625 mSelectY = mScrollY + (int) y; 4626 mTouchMode = TOUCH_SELECT_MODE; 4627 if (DebugFlags.WEB_VIEW) { 4628 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 4629 } 4630 nativeMoveSelection(contentX, contentY, false); 4631 mTouchSelection = mExtendSelection = true; 4632 invalidate(); // draw the i-beam instead of the arrow 4633 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4634 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4635 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4636 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4637 } else { 4638 // commit the short press action for the previous tap 4639 doShortPress(); 4640 mTouchMode = TOUCH_INIT_MODE; 4641 mDeferTouchProcess = (!inFullScreenMode() 4642 && mForwardTouchEvents) ? hitFocusedPlugin( 4643 contentX, contentY) : false; 4644 } 4645 } else { // the normal case 4646 mPreviewZoomOnly = false; 4647 mTouchMode = TOUCH_INIT_MODE; 4648 mDeferTouchProcess = (!inFullScreenMode() 4649 && mForwardTouchEvents) ? hitFocusedPlugin( 4650 contentX, contentY) : false; 4651 mWebViewCore.sendMessage( 4652 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4653 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4654 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 4655 (eventTime - mLastTouchUpTime), eventTime); 4656 } 4657 } 4658 // Trigger the link 4659 if (mTouchMode == TOUCH_INIT_MODE 4660 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4661 mPrivateHandler.sendEmptyMessageDelayed( 4662 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 4663 mPrivateHandler.sendEmptyMessageDelayed( 4664 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 4665 if (inFullScreenMode() || mDeferTouchProcess) { 4666 mPreventDefault = PREVENT_DEFAULT_YES; 4667 } else if (mForwardTouchEvents) { 4668 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 4669 } else { 4670 mPreventDefault = PREVENT_DEFAULT_NO; 4671 } 4672 // pass the touch events from UI thread to WebCore thread 4673 if (shouldForwardTouchEvent()) { 4674 TouchEventData ted = new TouchEventData(); 4675 ted.mAction = action; 4676 ted.mX = contentX; 4677 ted.mY = contentY; 4678 ted.mMetaState = ev.getMetaState(); 4679 ted.mReprocess = mDeferTouchProcess; 4680 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4681 if (mDeferTouchProcess) { 4682 // still needs to set them for compute deltaX/Y 4683 mLastTouchX = x; 4684 mLastTouchY = y; 4685 break; 4686 } 4687 if (!inFullScreenMode()) { 4688 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4689 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4690 action, 0), TAP_TIMEOUT); 4691 } 4692 } 4693 } 4694 startTouch(x, y, eventTime); 4695 break; 4696 } 4697 case MotionEvent.ACTION_MOVE: { 4698 boolean firstMove = false; 4699 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 4700 >= mTouchSlopSquare) { 4701 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4702 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4703 mConfirmMove = true; 4704 firstMove = true; 4705 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4706 mTouchMode = TOUCH_INIT_MODE; 4707 } 4708 } 4709 // pass the touch events from UI thread to WebCore thread 4710 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 4711 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 4712 TouchEventData ted = new TouchEventData(); 4713 ted.mAction = action; 4714 ted.mX = contentX; 4715 ted.mY = contentY; 4716 ted.mMetaState = ev.getMetaState(); 4717 ted.mReprocess = mDeferTouchProcess; 4718 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4719 mLastSentTouchTime = eventTime; 4720 if (mDeferTouchProcess) { 4721 break; 4722 } 4723 if (firstMove && !inFullScreenMode()) { 4724 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4725 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4726 action, 0), TAP_TIMEOUT); 4727 } 4728 } 4729 if (mTouchMode == TOUCH_DONE_MODE 4730 || mPreventDefault == PREVENT_DEFAULT_YES) { 4731 // no dragging during scroll zoom animation, or when prevent 4732 // default is yes 4733 break; 4734 } 4735 if (mVelocityTracker == null) { 4736 Log.e(LOGTAG, "Got null mVelocityTracker when " 4737 + "mPreventDefault = " + mPreventDefault 4738 + " mDeferTouchProcess = " + mDeferTouchProcess 4739 + " mTouchMode = " + mTouchMode); 4740 } 4741 mVelocityTracker.addMovement(ev); 4742 if (mTouchMode != TOUCH_DRAG_MODE) { 4743 if (mTouchMode == TOUCH_SELECT_MODE) { 4744 mSelectX = mScrollX + (int) x; 4745 mSelectY = mScrollY + (int) y; 4746 if (DebugFlags.WEB_VIEW) { 4747 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 4748 } 4749 nativeMoveSelection(contentX, contentY, true); 4750 invalidate(); 4751 break; 4752 } 4753 if (!mConfirmMove) { 4754 break; 4755 } 4756 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 4757 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 4758 // track mLastTouchTime as we may need to do fling at 4759 // ACTION_UP 4760 mLastTouchTime = eventTime; 4761 break; 4762 } 4763 // if it starts nearly horizontal or vertical, enforce it 4764 int ax = Math.abs(deltaX); 4765 int ay = Math.abs(deltaY); 4766 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4767 mSnapScrollMode = SNAP_X; 4768 mSnapPositive = deltaX > 0; 4769 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4770 mSnapScrollMode = SNAP_Y; 4771 mSnapPositive = deltaY > 0; 4772 } 4773 4774 mTouchMode = TOUCH_DRAG_MODE; 4775 mLastTouchX = x; 4776 mLastTouchY = y; 4777 fDeltaX = 0.0f; 4778 fDeltaY = 0.0f; 4779 deltaX = 0; 4780 deltaY = 0; 4781 4782 startDrag(); 4783 } 4784 4785 if (mDragTrackerHandler != null) { 4786 mDragTrackerHandler.dragTo(x, y); 4787 } 4788 4789 // do pan 4790 boolean done = false; 4791 boolean keepScrollBarsVisible = false; 4792 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 4793 keepScrollBarsVisible = done = true; 4794 } else { 4795 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4796 int ax = Math.abs(deltaX); 4797 int ay = Math.abs(deltaY); 4798 if (mSnapScrollMode == SNAP_X) { 4799 // radical change means getting out of snap mode 4800 if (ay > MAX_SLOPE_FOR_DIAG * ax 4801 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4802 mSnapScrollMode = SNAP_NONE; 4803 } 4804 // reverse direction means lock in the snap mode 4805 if (ax > MAX_SLOPE_FOR_DIAG * ay && 4806 (mSnapPositive 4807 ? deltaX < -mMinLockSnapReverseDistance 4808 : deltaX > mMinLockSnapReverseDistance)) { 4809 mSnapScrollMode |= SNAP_LOCK; 4810 } 4811 } else { 4812 // radical change means getting out of snap mode 4813 if (ax > MAX_SLOPE_FOR_DIAG * ay 4814 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4815 mSnapScrollMode = SNAP_NONE; 4816 } 4817 // reverse direction means lock in the snap mode 4818 if (ay > MAX_SLOPE_FOR_DIAG * ax && 4819 (mSnapPositive 4820 ? deltaY < -mMinLockSnapReverseDistance 4821 : deltaY > mMinLockSnapReverseDistance)) { 4822 mSnapScrollMode |= SNAP_LOCK; 4823 } 4824 } 4825 } 4826 if (mSnapScrollMode != SNAP_NONE) { 4827 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 4828 deltaY = 0; 4829 } else { 4830 deltaX = 0; 4831 } 4832 } 4833 if ((deltaX | deltaY) != 0) { 4834 if (deltaX != 0) { 4835 mLastTouchX = x; 4836 } 4837 if (deltaY != 0) { 4838 mLastTouchY = y; 4839 } 4840 mHeldMotionless = MOTIONLESS_FALSE; 4841 } else { 4842 // keep the scrollbar on the screen even there is no 4843 // scroll 4844 keepScrollBarsVisible = true; 4845 } 4846 mLastTouchTime = eventTime; 4847 mUserScroll = true; 4848 } 4849 4850 doDrag(deltaX, deltaY); 4851 4852 if (keepScrollBarsVisible) { 4853 if (mHeldMotionless != MOTIONLESS_TRUE) { 4854 mHeldMotionless = MOTIONLESS_TRUE; 4855 invalidate(); 4856 } 4857 // keep the scrollbar on the screen even there is no scroll 4858 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 4859 false); 4860 // return false to indicate that we can't pan out of the 4861 // view space 4862 return !done; 4863 } 4864 break; 4865 } 4866 case MotionEvent.ACTION_UP: { 4867 // pass the touch events from UI thread to WebCore thread 4868 if (shouldForwardTouchEvent()) { 4869 TouchEventData ted = new TouchEventData(); 4870 ted.mAction = action; 4871 ted.mX = contentX; 4872 ted.mY = contentY; 4873 ted.mMetaState = ev.getMetaState(); 4874 ted.mReprocess = mDeferTouchProcess; 4875 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4876 } 4877 mLastTouchUpTime = eventTime; 4878 switch (mTouchMode) { 4879 case TOUCH_DOUBLE_TAP_MODE: // double tap 4880 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4881 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4882 if (inFullScreenMode() || mDeferTouchProcess) { 4883 TouchEventData ted = new TouchEventData(); 4884 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 4885 ted.mX = contentX; 4886 ted.mY = contentY; 4887 ted.mMetaState = ev.getMetaState(); 4888 ted.mReprocess = mDeferTouchProcess; 4889 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4890 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 4891 doDoubleTap(); 4892 mTouchMode = TOUCH_DONE_MODE; 4893 } 4894 break; 4895 case TOUCH_SELECT_MODE: 4896 commitCopy(); 4897 mTouchSelection = false; 4898 break; 4899 case TOUCH_INIT_MODE: // tap 4900 case TOUCH_SHORTPRESS_START_MODE: 4901 case TOUCH_SHORTPRESS_MODE: 4902 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4903 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4904 if (mConfirmMove) { 4905 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 4906 " WebCore's response for touch down."); 4907 if (mPreventDefault != PREVENT_DEFAULT_YES 4908 && (computeMaxScrollX() > 0 4909 || computeMaxScrollY() > 0)) { 4910 // UI takes control back, cancel WebCore touch 4911 cancelWebCoreTouchEvent(contentX, contentY, 4912 true); 4913 // we will not rewrite drag code here, but we 4914 // will try fling if it applies. 4915 WebViewCore.reducePriority(); 4916 // fall through to TOUCH_DRAG_MODE 4917 } else { 4918 break; 4919 } 4920 } else { 4921 if (mTouchMode == TOUCH_INIT_MODE) { 4922 mPrivateHandler.sendEmptyMessageDelayed( 4923 RELEASE_SINGLE_TAP, ViewConfiguration 4924 .getDoubleTapTimeout()); 4925 } else { 4926 doShortPress(); 4927 } 4928 break; 4929 } 4930 case TOUCH_DRAG_MODE: 4931 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4932 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4933 mHeldMotionless = MOTIONLESS_TRUE; 4934 // redraw in high-quality, as we're done dragging 4935 invalidate(); 4936 // if the user waits a while w/o moving before the 4937 // up, we don't want to do a fling 4938 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4939 if (mVelocityTracker == null) { 4940 Log.e(LOGTAG, "Got null mVelocityTracker when " 4941 + "mPreventDefault = " 4942 + mPreventDefault 4943 + " mDeferTouchProcess = " 4944 + mDeferTouchProcess); 4945 } 4946 mVelocityTracker.addMovement(ev); 4947 doFling(); 4948 break; 4949 } else { 4950 if (mScroller.springback(mScrollX, mScrollY, 0, 4951 computeMaxScrollX(), 0, 4952 computeMaxScrollY())) { 4953 invalidate(); 4954 } 4955 } 4956 mLastVelocity = 0; 4957 WebViewCore.resumePriority(); 4958 break; 4959 } 4960 stopTouch(); 4961 break; 4962 } 4963 case MotionEvent.ACTION_CANCEL: { 4964 if (mTouchMode == TOUCH_DRAG_MODE) { 4965 mScroller.springback(mScrollX, mScrollY, 0, 4966 computeMaxScrollX(), 0, computeMaxScrollY()); 4967 invalidate(); 4968 } 4969 cancelWebCoreTouchEvent(contentX, contentY, false); 4970 cancelTouch(); 4971 break; 4972 } 4973 } 4974 return true; 4975 } 4976 4977 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 4978 if (shouldForwardTouchEvent()) { 4979 if (removeEvents) { 4980 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 4981 } 4982 TouchEventData ted = new TouchEventData(); 4983 ted.mX = x; 4984 ted.mY = y; 4985 ted.mAction = MotionEvent.ACTION_CANCEL; 4986 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4987 mPreventDefault = PREVENT_DEFAULT_IGNORE; 4988 } 4989 } 4990 4991 private void startTouch(float x, float y, long eventTime) { 4992 // Remember where the motion event started 4993 mLastTouchX = x; 4994 mLastTouchY = y; 4995 mLastTouchTime = eventTime; 4996 mVelocityTracker = VelocityTracker.obtain(); 4997 mSnapScrollMode = SNAP_NONE; 4998 if (mDragTracker != null) { 4999 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 5000 } 5001 } 5002 5003 private void startDrag() { 5004 WebViewCore.reducePriority(); 5005 if (!mDragFromTextInput) { 5006 nativeHideCursor(); 5007 } 5008 WebSettings settings = getSettings(); 5009 if (settings.supportZoom() 5010 && settings.getBuiltInZoomControls() 5011 && !mZoomButtonsController.isVisible() 5012 && mMinZoomScale < mMaxZoomScale) { 5013 mZoomButtonsController.setVisible(true); 5014 int count = settings.getDoubleTapToastCount(); 5015 if (mInZoomOverview && count > 0) { 5016 settings.setDoubleTapToastCount(--count); 5017 Toast.makeText(mContext, 5018 com.android.internal.R.string.double_tap_toast, 5019 Toast.LENGTH_LONG).show(); 5020 } 5021 } 5022 } 5023 5024 private void doDrag(int deltaX, int deltaY) { 5025 if ((deltaX | deltaY) != 0) { 5026 overscrollBy(deltaX, deltaY, mScrollX, mScrollY, 5027 computeMaxScrollX(), computeMaxScrollY(), 5028 getViewWidth() / 3, getViewHeight() / 3); 5029 } 5030 if (!getSettings().getBuiltInZoomControls()) { 5031 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 5032 if (mZoomControls != null && showPlusMinus) { 5033 if (mZoomControls.getVisibility() == View.VISIBLE) { 5034 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5035 } else { 5036 mZoomControls.show(showPlusMinus, false); 5037 } 5038 mPrivateHandler.postDelayed(mZoomControlRunnable, 5039 ZOOM_CONTROLS_TIMEOUT); 5040 } 5041 } 5042 } 5043 5044 private void stopTouch() { 5045 if (mDragTrackerHandler != null) { 5046 mDragTrackerHandler.stopDrag(); 5047 } 5048 // we also use mVelocityTracker == null to tell us that we are 5049 // not "moving around", so we can take the slower/prettier 5050 // mode in the drawing code 5051 if (mVelocityTracker != null) { 5052 mVelocityTracker.recycle(); 5053 mVelocityTracker = null; 5054 } 5055 } 5056 5057 private void cancelTouch() { 5058 if (mDragTrackerHandler != null) { 5059 mDragTrackerHandler.stopDrag(); 5060 } 5061 // we also use mVelocityTracker == null to tell us that we are 5062 // not "moving around", so we can take the slower/prettier 5063 // mode in the drawing code 5064 if (mVelocityTracker != null) { 5065 mVelocityTracker.recycle(); 5066 mVelocityTracker = null; 5067 } 5068 if (mTouchMode == TOUCH_DRAG_MODE) { 5069 WebViewCore.resumePriority(); 5070 } 5071 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5072 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5073 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5074 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5075 mHeldMotionless = MOTIONLESS_TRUE; 5076 mTouchMode = TOUCH_DONE_MODE; 5077 nativeHideCursor(); 5078 } 5079 5080 private long mTrackballFirstTime = 0; 5081 private long mTrackballLastTime = 0; 5082 private float mTrackballRemainsX = 0.0f; 5083 private float mTrackballRemainsY = 0.0f; 5084 private int mTrackballXMove = 0; 5085 private int mTrackballYMove = 0; 5086 private boolean mExtendSelection = false; 5087 private boolean mTouchSelection = false; 5088 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5089 private static final int TRACKBALL_TIMEOUT = 200; 5090 private static final int TRACKBALL_WAIT = 100; 5091 private static final int TRACKBALL_SCALE = 400; 5092 private static final int TRACKBALL_SCROLL_COUNT = 5; 5093 private static final int TRACKBALL_MOVE_COUNT = 10; 5094 private static final int TRACKBALL_MULTIPLIER = 3; 5095 private static final int SELECT_CURSOR_OFFSET = 16; 5096 private int mSelectX = 0; 5097 private int mSelectY = 0; 5098 private boolean mFocusSizeChanged = false; 5099 private boolean mShiftIsPressed = false; 5100 private boolean mTrackballDown = false; 5101 private long mTrackballUpTime = 0; 5102 private long mLastCursorTime = 0; 5103 private Rect mLastCursorBounds; 5104 5105 // Set by default; BrowserActivity clears to interpret trackball data 5106 // directly for movement. Currently, the framework only passes 5107 // arrow key events, not trackball events, from one child to the next 5108 private boolean mMapTrackballToArrowKeys = true; 5109 5110 public void setMapTrackballToArrowKeys(boolean setMap) { 5111 mMapTrackballToArrowKeys = setMap; 5112 } 5113 5114 void resetTrackballTime() { 5115 mTrackballLastTime = 0; 5116 } 5117 5118 @Override 5119 public boolean onTrackballEvent(MotionEvent ev) { 5120 long time = ev.getEventTime(); 5121 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5122 if (ev.getY() > 0) pageDown(true); 5123 if (ev.getY() < 0) pageUp(true); 5124 return true; 5125 } 5126 boolean shiftPressed = mShiftIsPressed && (mNativeClass == 0 5127 || !nativeFocusIsPlugin()); 5128 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5129 if (shiftPressed) { 5130 return true; // discard press if copy in progress 5131 } 5132 mTrackballDown = true; 5133 if (mNativeClass == 0) { 5134 return false; 5135 } 5136 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5137 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5138 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5139 nativeSelectBestAt(mLastCursorBounds); 5140 } 5141 if (DebugFlags.WEB_VIEW) { 5142 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5143 + " time=" + time 5144 + " mLastCursorTime=" + mLastCursorTime); 5145 } 5146 if (isInTouchMode()) requestFocusFromTouch(); 5147 return false; // let common code in onKeyDown at it 5148 } 5149 if (ev.getAction() == MotionEvent.ACTION_UP) { 5150 // LONG_PRESS_CENTER is set in common onKeyDown 5151 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5152 mTrackballDown = false; 5153 mTrackballUpTime = time; 5154 if (shiftPressed) { 5155 if (mExtendSelection) { 5156 commitCopy(); 5157 } else { 5158 mExtendSelection = true; 5159 invalidate(); // draw the i-beam instead of the arrow 5160 } 5161 return true; // discard press if copy in progress 5162 } 5163 if (DebugFlags.WEB_VIEW) { 5164 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5165 + " time=" + time 5166 ); 5167 } 5168 return false; // let common code in onKeyUp at it 5169 } 5170 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 5171 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5172 return false; 5173 } 5174 if (mTrackballDown) { 5175 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5176 return true; // discard move if trackball is down 5177 } 5178 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5179 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5180 return true; 5181 } 5182 // TODO: alternatively we can do panning as touch does 5183 switchOutDrawHistory(); 5184 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5185 if (DebugFlags.WEB_VIEW) { 5186 Log.v(LOGTAG, "onTrackballEvent time=" 5187 + time + " last=" + mTrackballLastTime); 5188 } 5189 mTrackballFirstTime = time; 5190 mTrackballXMove = mTrackballYMove = 0; 5191 } 5192 mTrackballLastTime = time; 5193 if (DebugFlags.WEB_VIEW) { 5194 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5195 } 5196 mTrackballRemainsX += ev.getX(); 5197 mTrackballRemainsY += ev.getY(); 5198 doTrackball(time); 5199 return true; 5200 } 5201 5202 void moveSelection(float xRate, float yRate) { 5203 if (mNativeClass == 0) 5204 return; 5205 int width = getViewWidth(); 5206 int height = getViewHeight(); 5207 mSelectX += xRate; 5208 mSelectY += yRate; 5209 int maxX = width + mScrollX; 5210 int maxY = height + mScrollY; 5211 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5212 , mSelectX)); 5213 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5214 , mSelectY)); 5215 if (DebugFlags.WEB_VIEW) { 5216 Log.v(LOGTAG, "moveSelection" 5217 + " mSelectX=" + mSelectX 5218 + " mSelectY=" + mSelectY 5219 + " mScrollX=" + mScrollX 5220 + " mScrollY=" + mScrollY 5221 + " xRate=" + xRate 5222 + " yRate=" + yRate 5223 ); 5224 } 5225 nativeMoveSelection(viewToContentX(mSelectX), 5226 viewToContentY(mSelectY), mExtendSelection); 5227 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5228 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5229 : 0; 5230 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5231 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5232 : 0; 5233 pinScrollBy(scrollX, scrollY, true, 0); 5234 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5235 requestRectangleOnScreen(select); 5236 invalidate(); 5237 } 5238 5239 private int scaleTrackballX(float xRate, int width) { 5240 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5241 int nextXMove = xMove; 5242 if (xMove > 0) { 5243 if (xMove > mTrackballXMove) { 5244 xMove -= mTrackballXMove; 5245 } 5246 } else if (xMove < mTrackballXMove) { 5247 xMove -= mTrackballXMove; 5248 } 5249 mTrackballXMove = nextXMove; 5250 return xMove; 5251 } 5252 5253 private int scaleTrackballY(float yRate, int height) { 5254 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5255 int nextYMove = yMove; 5256 if (yMove > 0) { 5257 if (yMove > mTrackballYMove) { 5258 yMove -= mTrackballYMove; 5259 } 5260 } else if (yMove < mTrackballYMove) { 5261 yMove -= mTrackballYMove; 5262 } 5263 mTrackballYMove = nextYMove; 5264 return yMove; 5265 } 5266 5267 private int keyCodeToSoundsEffect(int keyCode) { 5268 switch(keyCode) { 5269 case KeyEvent.KEYCODE_DPAD_UP: 5270 return SoundEffectConstants.NAVIGATION_UP; 5271 case KeyEvent.KEYCODE_DPAD_RIGHT: 5272 return SoundEffectConstants.NAVIGATION_RIGHT; 5273 case KeyEvent.KEYCODE_DPAD_DOWN: 5274 return SoundEffectConstants.NAVIGATION_DOWN; 5275 case KeyEvent.KEYCODE_DPAD_LEFT: 5276 return SoundEffectConstants.NAVIGATION_LEFT; 5277 } 5278 throw new IllegalArgumentException("keyCode must be one of " + 5279 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5280 "KEYCODE_DPAD_LEFT}."); 5281 } 5282 5283 private void doTrackball(long time) { 5284 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5285 if (elapsed == 0) { 5286 elapsed = TRACKBALL_TIMEOUT; 5287 } 5288 float xRate = mTrackballRemainsX * 1000 / elapsed; 5289 float yRate = mTrackballRemainsY * 1000 / elapsed; 5290 int viewWidth = getViewWidth(); 5291 int viewHeight = getViewHeight(); 5292 if (mShiftIsPressed && (mNativeClass == 0 || !nativeFocusIsPlugin())) { 5293 moveSelection(scaleTrackballX(xRate, viewWidth), 5294 scaleTrackballY(yRate, viewHeight)); 5295 mTrackballRemainsX = mTrackballRemainsY = 0; 5296 return; 5297 } 5298 float ax = Math.abs(xRate); 5299 float ay = Math.abs(yRate); 5300 float maxA = Math.max(ax, ay); 5301 if (DebugFlags.WEB_VIEW) { 5302 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5303 + " xRate=" + xRate 5304 + " yRate=" + yRate 5305 + " mTrackballRemainsX=" + mTrackballRemainsX 5306 + " mTrackballRemainsY=" + mTrackballRemainsY); 5307 } 5308 int width = mContentWidth - viewWidth; 5309 int height = mContentHeight - viewHeight; 5310 if (width < 0) width = 0; 5311 if (height < 0) height = 0; 5312 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5313 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5314 maxA = Math.max(ax, ay); 5315 int count = Math.max(0, (int) maxA); 5316 int oldScrollX = mScrollX; 5317 int oldScrollY = mScrollY; 5318 if (count > 0) { 5319 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5320 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5321 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5322 KeyEvent.KEYCODE_DPAD_RIGHT; 5323 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5324 if (DebugFlags.WEB_VIEW) { 5325 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5326 + " count=" + count 5327 + " mTrackballRemainsX=" + mTrackballRemainsX 5328 + " mTrackballRemainsY=" + mTrackballRemainsY); 5329 } 5330 if (mNativeClass != 0 && nativeFocusIsPlugin()) { 5331 for (int i = 0; i < count; i++) { 5332 letPluginHandleNavKey(selectKeyCode, time, true); 5333 } 5334 letPluginHandleNavKey(selectKeyCode, time, false); 5335 } else if (navHandledKey(selectKeyCode, count, false, time)) { 5336 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5337 } 5338 mTrackballRemainsX = mTrackballRemainsY = 0; 5339 } 5340 if (count >= TRACKBALL_SCROLL_COUNT) { 5341 int xMove = scaleTrackballX(xRate, width); 5342 int yMove = scaleTrackballY(yRate, height); 5343 if (DebugFlags.WEB_VIEW) { 5344 Log.v(LOGTAG, "doTrackball pinScrollBy" 5345 + " count=" + count 5346 + " xMove=" + xMove + " yMove=" + yMove 5347 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5348 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5349 ); 5350 } 5351 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5352 xMove = 0; 5353 } 5354 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5355 yMove = 0; 5356 } 5357 if (xMove != 0 || yMove != 0) { 5358 pinScrollBy(xMove, yMove, true, 0); 5359 } 5360 mUserScroll = true; 5361 } 5362 } 5363 5364 private int computeMaxScrollX() { 5365 return Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5366 } 5367 5368 private int computeMaxScrollY() { 5369 return Math.max(computeVerticalScrollRange() + getTitleHeight() 5370 - getViewHeightWithTitle(), getTitleHeight()); 5371 } 5372 5373 public void flingScroll(int vx, int vy) { 5374 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 5375 computeMaxScrollY(), getViewWidth() / 3, getViewHeight() / 3); 5376 invalidate(); 5377 } 5378 5379 private void doFling() { 5380 if (mVelocityTracker == null) { 5381 return; 5382 } 5383 int maxX = computeMaxScrollX(); 5384 int maxY = computeMaxScrollY(); 5385 5386 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5387 int vx = (int) mVelocityTracker.getXVelocity(); 5388 int vy = (int) mVelocityTracker.getYVelocity(); 5389 5390 if (mSnapScrollMode != SNAP_NONE) { 5391 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5392 vy = 0; 5393 } else { 5394 vx = 0; 5395 } 5396 } 5397 if (maxX == 0 && !canOverscrollHorizontally()) { 5398 vx = 0; 5399 } 5400 if (true /* EMG release: make our fling more like Maps' */) { 5401 // maps cuts their velocity in half 5402 vx = vx * 3 / 4; 5403 vy = vy * 3 / 4; 5404 } 5405 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5406 WebViewCore.resumePriority(); 5407 if (mScroller.springback(mScrollX, mScrollY, 0, computeMaxScrollX(), 5408 0, computeMaxScrollY())) { 5409 invalidate(); 5410 } 5411 return; 5412 } 5413 float currentVelocity = mScroller.getCurrVelocity(); 5414 if (mLastVelocity > 0 && currentVelocity > 0) { 5415 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5416 - Math.atan2(vy, vx))); 5417 final float circle = (float) (Math.PI) * 2.0f; 5418 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5419 vx += currentVelocity * mLastVelX / mLastVelocity; 5420 vy += currentVelocity * mLastVelY / mLastVelocity; 5421 if (DebugFlags.WEB_VIEW) { 5422 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5423 } 5424 } else if (DebugFlags.WEB_VIEW) { 5425 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5426 } 5427 } else if (DebugFlags.WEB_VIEW) { 5428 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5429 + " current=" + currentVelocity 5430 + " vx=" + vx + " vy=" + vy 5431 + " maxX=" + maxX + " maxY=" + maxY 5432 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5433 } 5434 mLastVelX = vx; 5435 mLastVelY = vy; 5436 mLastVelocity = (float) Math.hypot(vx, vy); 5437 5438 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY, 5439 getViewWidth() / 3, getViewHeight() / 3); 5440 // TODO: duration is calculated based on velocity, if the range is 5441 // small, the animation will stop before duration is up. We may 5442 // want to calculate how long the animation is going to run to precisely 5443 // resume the webcore update. 5444 final int time = mScroller.getDuration(); 5445 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5446 awakenScrollBars(time); 5447 invalidate(); 5448 } 5449 5450 private boolean zoomWithPreview(float scale, boolean updateTextWrapScale) { 5451 float oldScale = mActualScale; 5452 mInitialScrollX = mScrollX; 5453 mInitialScrollY = mScrollY; 5454 5455 // snap to DEFAULT_SCALE if it is close 5456 if (Math.abs(scale - mDefaultScale) < MINIMUM_SCALE_INCREMENT) { 5457 scale = mDefaultScale; 5458 } 5459 5460 setNewZoomScale(scale, updateTextWrapScale, false); 5461 5462 if (oldScale != mActualScale) { 5463 // use mZoomPickerScale to see zoom preview first 5464 mZoomStart = SystemClock.uptimeMillis(); 5465 mInvInitialZoomScale = 1.0f / oldScale; 5466 mInvFinalZoomScale = 1.0f / mActualScale; 5467 mZoomScale = mActualScale; 5468 WebViewCore.pauseUpdatePicture(mWebViewCore); 5469 invalidate(); 5470 return true; 5471 } else { 5472 return false; 5473 } 5474 } 5475 5476 /** 5477 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5478 * in charge of installing this view to the view hierarchy. This view will 5479 * become visible when the user starts scrolling via touch and fade away if 5480 * the user does not interact with it. 5481 * <p/> 5482 * API version 3 introduces a built-in zoom mechanism that is shown 5483 * automatically by the MapView. This is the preferred approach for 5484 * showing the zoom UI. 5485 * 5486 * @deprecated The built-in zoom mechanism is preferred, see 5487 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5488 */ 5489 @Deprecated 5490 public View getZoomControls() { 5491 if (!getSettings().supportZoom()) { 5492 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5493 return null; 5494 } 5495 if (mZoomControls == null) { 5496 mZoomControls = createZoomControls(); 5497 5498 /* 5499 * need to be set to VISIBLE first so that getMeasuredHeight() in 5500 * {@link #onSizeChanged()} can return the measured value for proper 5501 * layout. 5502 */ 5503 mZoomControls.setVisibility(View.VISIBLE); 5504 mZoomControlRunnable = new Runnable() { 5505 public void run() { 5506 5507 /* Don't dismiss the controls if the user has 5508 * focus on them. Wait and check again later. 5509 */ 5510 if (!mZoomControls.hasFocus()) { 5511 mZoomControls.hide(); 5512 } else { 5513 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5514 mPrivateHandler.postDelayed(mZoomControlRunnable, 5515 ZOOM_CONTROLS_TIMEOUT); 5516 } 5517 } 5518 }; 5519 } 5520 return mZoomControls; 5521 } 5522 5523 private ExtendedZoomControls createZoomControls() { 5524 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 5525 , null); 5526 zoomControls.setOnZoomInClickListener(new OnClickListener() { 5527 public void onClick(View v) { 5528 // reset time out 5529 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5530 mPrivateHandler.postDelayed(mZoomControlRunnable, 5531 ZOOM_CONTROLS_TIMEOUT); 5532 zoomIn(); 5533 } 5534 }); 5535 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 5536 public void onClick(View v) { 5537 // reset time out 5538 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5539 mPrivateHandler.postDelayed(mZoomControlRunnable, 5540 ZOOM_CONTROLS_TIMEOUT); 5541 zoomOut(); 5542 } 5543 }); 5544 return zoomControls; 5545 } 5546 5547 /** 5548 * Gets the {@link ZoomButtonsController} which can be used to add 5549 * additional buttons to the zoom controls window. 5550 * 5551 * @return The instance of {@link ZoomButtonsController} used by this class, 5552 * or null if it is unavailable. 5553 * @hide 5554 */ 5555 public ZoomButtonsController getZoomButtonsController() { 5556 return mZoomButtonsController; 5557 } 5558 5559 /** 5560 * Perform zoom in in the webview 5561 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 5562 */ 5563 public boolean zoomIn() { 5564 // TODO: alternatively we can disallow this during draw history mode 5565 switchOutDrawHistory(); 5566 mInZoomOverview = false; 5567 // Center zooming to the center of the screen. 5568 mZoomCenterX = getViewWidth() * .5f; 5569 mZoomCenterY = getViewHeight() * .5f; 5570 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5571 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5572 return zoomWithPreview(mActualScale * 1.25f, true); 5573 } 5574 5575 /** 5576 * Perform zoom out in the webview 5577 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 5578 */ 5579 public boolean zoomOut() { 5580 // TODO: alternatively we can disallow this during draw history mode 5581 switchOutDrawHistory(); 5582 // Center zooming to the center of the screen. 5583 mZoomCenterX = getViewWidth() * .5f; 5584 mZoomCenterY = getViewHeight() * .5f; 5585 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5586 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5587 return zoomWithPreview(mActualScale * 0.8f, true); 5588 } 5589 5590 private void updateSelection() { 5591 if (mNativeClass == 0) { 5592 return; 5593 } 5594 // mLastTouchX and mLastTouchY are the point in the current viewport 5595 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5596 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5597 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 5598 contentX + mNavSlop, contentY + mNavSlop); 5599 nativeSelectBestAt(rect); 5600 } 5601 5602 /** 5603 * Scroll the focused text field/area to match the WebTextView 5604 * @param xPercent New x position of the WebTextView from 0 to 1. 5605 * @param y New y position of the WebTextView in view coordinates 5606 */ 5607 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 5608 if (!inEditingMode() || mWebViewCore == null) { 5609 return; 5610 } 5611 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 5612 // Since this position is relative to the top of the text input 5613 // field, we do not need to take the title bar's height into 5614 // consideration. 5615 viewToContentDimension(y), 5616 new Float(xPercent)); 5617 } 5618 5619 /** 5620 * Set our starting point and time for a drag from the WebTextView. 5621 */ 5622 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 5623 if (!inEditingMode()) { 5624 return; 5625 } 5626 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 5627 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 5628 mLastTouchTime = eventTime; 5629 if (!mScroller.isFinished()) { 5630 abortAnimation(); 5631 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5632 } 5633 mSnapScrollMode = SNAP_NONE; 5634 mVelocityTracker = VelocityTracker.obtain(); 5635 mTouchMode = TOUCH_DRAG_START_MODE; 5636 } 5637 5638 /** 5639 * Given a motion event from the WebTextView, set its location to our 5640 * coordinates, and handle the event. 5641 */ 5642 /*package*/ boolean textFieldDrag(MotionEvent event) { 5643 if (!inEditingMode()) { 5644 return false; 5645 } 5646 mDragFromTextInput = true; 5647 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 5648 (float) (mWebTextView.getTop() - mScrollY)); 5649 boolean result = onTouchEvent(event); 5650 mDragFromTextInput = false; 5651 return result; 5652 } 5653 5654 /** 5655 * Due a touch up from a WebTextView. This will be handled by webkit to 5656 * change the selection. 5657 * @param event MotionEvent in the WebTextView's coordinates. 5658 */ 5659 /*package*/ void touchUpOnTextField(MotionEvent event) { 5660 if (!inEditingMode()) { 5661 return; 5662 } 5663 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 5664 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 5665 nativeMotionUp(x, y, mNavSlop); 5666 } 5667 5668 /** 5669 * Called when pressing the center key or trackball on a textfield. 5670 */ 5671 /*package*/ void centerKeyPressOnTextField() { 5672 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 5673 nativeCursorNodePointer()); 5674 } 5675 5676 private void doShortPress() { 5677 if (mNativeClass == 0) { 5678 return; 5679 } 5680 if (mPreventDefault == PREVENT_DEFAULT_YES) { 5681 return; 5682 } 5683 mTouchMode = TOUCH_DONE_MODE; 5684 switchOutDrawHistory(); 5685 // mLastTouchX and mLastTouchY are the point in the current viewport 5686 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5687 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5688 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 5689 WebViewCore.MotionUpData motionUpData = new WebViewCore 5690 .MotionUpData(); 5691 motionUpData.mFrame = nativeCacheHitFramePointer(); 5692 motionUpData.mNode = nativeCacheHitNodePointer(); 5693 motionUpData.mBounds = nativeCacheHitNodeBounds(); 5694 motionUpData.mX = contentX; 5695 motionUpData.mY = contentY; 5696 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 5697 motionUpData); 5698 } else { 5699 doMotionUp(contentX, contentY); 5700 } 5701 } 5702 5703 private void doMotionUp(int contentX, int contentY) { 5704 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 5705 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 5706 } 5707 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 5708 playSoundEffect(SoundEffectConstants.CLICK); 5709 } 5710 } 5711 5712 /* 5713 * Return true if the view (Plugin) is fully visible and maximized inside 5714 * the WebView. 5715 */ 5716 private boolean isPluginFitOnScreen(ViewManager.ChildView view) { 5717 int viewWidth = getViewWidth(); 5718 int viewHeight = getViewHeightWithTitle(); 5719 float scale = Math.min((float) viewWidth / view.width, 5720 (float) viewHeight / view.height); 5721 if (scale < mMinZoomScale) { 5722 scale = mMinZoomScale; 5723 } else if (scale > mMaxZoomScale) { 5724 scale = mMaxZoomScale; 5725 } 5726 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 5727 if (contentToViewX(view.x) >= mScrollX 5728 && contentToViewX(view.x + view.width) <= mScrollX 5729 + viewWidth 5730 && contentToViewY(view.y) >= mScrollY 5731 && contentToViewY(view.y + view.height) <= mScrollY 5732 + viewHeight) { 5733 return true; 5734 } 5735 } 5736 return false; 5737 } 5738 5739 /* 5740 * Maximize and center the view inside the WebView. If the zoom doesn't need 5741 * to be changed, do an animated scroll to center it. If the zoom needs to 5742 * be changed, find the zoom center and do a smooth zoom transition. 5743 */ 5744 private void centerPluginOnScreen(ViewManager.ChildView child) { 5745 int viewWidth = getViewWidth(); 5746 int viewHeight = getViewHeightWithTitle(); 5747 float scale = Math.min((float) viewWidth / child.width, 5748 (float) viewHeight / child.height); 5749 if (scale < mMinZoomScale) { 5750 scale = mMinZoomScale; 5751 } else if (scale > mMaxZoomScale) { 5752 scale = mMaxZoomScale; 5753 } 5754 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 5755 pinScrollTo( 5756 contentToViewX(child.x + child.width / 2) - viewWidth / 2, 5757 contentToViewY(child.y + child.height / 2) - viewHeight / 2, 5758 true, 0); 5759 } else { 5760 int oldScreenX = contentToViewX(child.x) - mScrollX; 5761 int newPluginX = (int) (child.x * scale); 5762 int newPluginWidth = (int) (child.width * scale); 5763 int newMaxWidth = (int) (mContentWidth * scale); 5764 int newScreenX = (viewWidth - newPluginWidth) / 2; 5765 // pin the newX to the WebView 5766 if (newScreenX > newPluginX) { 5767 newScreenX = newPluginX; 5768 } else if (newScreenX > (newMaxWidth - newPluginX - newPluginWidth)) { 5769 newScreenX = viewWidth - (newMaxWidth - newPluginX); 5770 } 5771 mZoomCenterX = (oldScreenX * scale - newScreenX * mActualScale) 5772 / (scale - mActualScale); 5773 int oldScreenY = contentToViewY(child.y) - mScrollY; 5774 int newPluginY = (int) (child.y * scale) + getTitleHeight(); 5775 int newPluginHeight = (int) (child.height * scale); 5776 int newMaxHeight = (int) (mContentHeight * scale) + getTitleHeight(); 5777 int newScreenY = (viewHeight - newPluginHeight) / 2; 5778 // pin the newY to the WebView 5779 if (newScreenY > newPluginY) { 5780 newScreenY = newPluginY; 5781 } else if (newScreenY > (newMaxHeight - newPluginY - newPluginHeight)) { 5782 newScreenY = viewHeight - (newMaxHeight - newPluginY); 5783 } 5784 mZoomCenterY = (oldScreenY * scale - newScreenY * mActualScale) 5785 / (scale - mActualScale); 5786 zoomWithPreview(scale, false); 5787 } 5788 } 5789 5790 // Rule for double tap: 5791 // 1. if the current scale is not same as the text wrap scale and layout 5792 // algorithm is NARROW_COLUMNS, fit to column; 5793 // 2. if the current state is not overview mode, change to overview mode; 5794 // 3. if the current state is overview mode, change to default scale. 5795 private void doDoubleTap() { 5796 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 5797 return; 5798 } 5799 mZoomCenterX = mLastTouchX; 5800 mZoomCenterY = mLastTouchY; 5801 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5802 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5803 WebSettings settings = getSettings(); 5804 // remove the zoom control after double tap 5805 if (settings.getBuiltInZoomControls()) { 5806 if (mZoomButtonsController.isVisible()) { 5807 mZoomButtonsController.setVisible(false); 5808 } 5809 } else { 5810 if (mZoomControlRunnable != null) { 5811 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5812 } 5813 if (mZoomControls != null) { 5814 mZoomControls.hide(); 5815 } 5816 } 5817 settings.setDoubleTapToastCount(0); 5818 ViewManager.ChildView plugin = mViewManager.hitTest(mAnchorX, mAnchorY); 5819 if (plugin != null) { 5820 if (isPluginFitOnScreen(plugin)) { 5821 mInZoomOverview = true; 5822 // Force the titlebar fully reveal in overview mode 5823 if (mScrollY < getTitleHeight()) mScrollY = 0; 5824 zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth, 5825 true); 5826 } else { 5827 mInZoomOverview = false; 5828 centerPluginOnScreen(plugin); 5829 } 5830 return; 5831 } 5832 boolean zoomToDefault = false; 5833 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 5834 && (Math.abs(mActualScale - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT)) { 5835 setNewZoomScale(mActualScale, true, true); 5836 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 5837 if (Math.abs(mActualScale - overviewScale) < MINIMUM_SCALE_INCREMENT) { 5838 mInZoomOverview = true; 5839 } 5840 } else if (!mInZoomOverview) { 5841 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 5842 if (Math.abs(mActualScale - newScale) >= MINIMUM_SCALE_INCREMENT) { 5843 mInZoomOverview = true; 5844 // Force the titlebar fully reveal in overview mode 5845 if (mScrollY < getTitleHeight()) mScrollY = 0; 5846 zoomWithPreview(newScale, true); 5847 } else if (Math.abs(mActualScale - mDefaultScale) >= MINIMUM_SCALE_INCREMENT) { 5848 zoomToDefault = true; 5849 } 5850 } else { 5851 zoomToDefault = true; 5852 } 5853 if (zoomToDefault) { 5854 mInZoomOverview = false; 5855 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 5856 if (left != NO_LEFTEDGE) { 5857 // add a 5pt padding to the left edge. 5858 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 5859 - mScrollX; 5860 // Re-calculate the zoom center so that the new scroll x will be 5861 // on the left edge. 5862 if (viewLeft > 0) { 5863 mZoomCenterX = viewLeft * mDefaultScale 5864 / (mDefaultScale - mActualScale); 5865 } else { 5866 scrollBy(viewLeft, 0); 5867 mZoomCenterX = 0; 5868 } 5869 } 5870 zoomWithPreview(mDefaultScale, true); 5871 } 5872 } 5873 5874 // Called by JNI to handle a touch on a node representing an email address, 5875 // address, or phone number 5876 private void overrideLoading(String url) { 5877 mCallbackProxy.uiOverrideUrlLoading(url); 5878 } 5879 5880 @Override 5881 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 5882 boolean result = false; 5883 if (inEditingMode()) { 5884 result = mWebTextView.requestFocus(direction, 5885 previouslyFocusedRect); 5886 } else { 5887 result = super.requestFocus(direction, previouslyFocusedRect); 5888 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 5889 // For cases such as GMail, where we gain focus from a direction, 5890 // we want to move to the first available link. 5891 // FIXME: If there are no visible links, we may not want to 5892 int fakeKeyDirection = 0; 5893 switch(direction) { 5894 case View.FOCUS_UP: 5895 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 5896 break; 5897 case View.FOCUS_DOWN: 5898 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 5899 break; 5900 case View.FOCUS_LEFT: 5901 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 5902 break; 5903 case View.FOCUS_RIGHT: 5904 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 5905 break; 5906 default: 5907 return result; 5908 } 5909 if (mNativeClass != 0 && !nativeHasCursorNode()) { 5910 navHandledKey(fakeKeyDirection, 1, true, 0); 5911 } 5912 } 5913 } 5914 return result; 5915 } 5916 5917 @Override 5918 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5919 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 5920 5921 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5922 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5923 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5924 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5925 5926 int measuredHeight = heightSize; 5927 int measuredWidth = widthSize; 5928 5929 // Grab the content size from WebViewCore. 5930 int contentHeight = contentToViewDimension(mContentHeight); 5931 int contentWidth = contentToViewDimension(mContentWidth); 5932 5933// Log.d(LOGTAG, "------- measure " + heightMode); 5934 5935 if (heightMode != MeasureSpec.EXACTLY) { 5936 mHeightCanMeasure = true; 5937 measuredHeight = contentHeight; 5938 if (heightMode == MeasureSpec.AT_MOST) { 5939 // If we are larger than the AT_MOST height, then our height can 5940 // no longer be measured and we should scroll internally. 5941 if (measuredHeight > heightSize) { 5942 measuredHeight = heightSize; 5943 mHeightCanMeasure = false; 5944 } 5945 } 5946 } else { 5947 mHeightCanMeasure = false; 5948 } 5949 if (mNativeClass != 0) { 5950 nativeSetHeightCanMeasure(mHeightCanMeasure); 5951 } 5952 // For the width, always use the given size unless unspecified. 5953 if (widthMode == MeasureSpec.UNSPECIFIED) { 5954 mWidthCanMeasure = true; 5955 measuredWidth = contentWidth; 5956 } else { 5957 mWidthCanMeasure = false; 5958 } 5959 5960 synchronized (this) { 5961 setMeasuredDimension(measuredWidth, measuredHeight); 5962 } 5963 } 5964 5965 @Override 5966 public boolean requestChildRectangleOnScreen(View child, 5967 Rect rect, 5968 boolean immediate) { 5969 rect.offset(child.getLeft() - child.getScrollX(), 5970 child.getTop() - child.getScrollY()); 5971 5972 Rect content = new Rect(viewToContentX(mScrollX), 5973 viewToContentY(mScrollY), 5974 viewToContentX(mScrollX + getWidth() 5975 - getVerticalScrollbarWidth()), 5976 viewToContentY(mScrollY + getViewHeightWithTitle())); 5977 content = nativeSubtractLayers(content); 5978 int screenTop = contentToViewY(content.top); 5979 int screenBottom = contentToViewY(content.bottom); 5980 int height = screenBottom - screenTop; 5981 int scrollYDelta = 0; 5982 5983 if (rect.bottom > screenBottom) { 5984 int oneThirdOfScreenHeight = height / 3; 5985 if (rect.height() > 2 * oneThirdOfScreenHeight) { 5986 // If the rectangle is too tall to fit in the bottom two thirds 5987 // of the screen, place it at the top. 5988 scrollYDelta = rect.top - screenTop; 5989 } else { 5990 // If the rectangle will still fit on screen, we want its 5991 // top to be in the top third of the screen. 5992 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 5993 } 5994 } else if (rect.top < screenTop) { 5995 scrollYDelta = rect.top - screenTop; 5996 } 5997 5998 int screenLeft = contentToViewX(content.left); 5999 int screenRight = contentToViewX(content.right); 6000 int width = screenRight - screenLeft; 6001 int scrollXDelta = 0; 6002 6003 if (rect.right > screenRight && rect.left > screenLeft) { 6004 if (rect.width() > width) { 6005 scrollXDelta += (rect.left - screenLeft); 6006 } else { 6007 scrollXDelta += (rect.right - screenRight); 6008 } 6009 } else if (rect.left < screenLeft) { 6010 scrollXDelta -= (screenLeft - rect.left); 6011 } 6012 6013 if ((scrollYDelta | scrollXDelta) != 0) { 6014 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6015 } 6016 6017 return false; 6018 } 6019 6020 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6021 String replace, int newStart, int newEnd) { 6022 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6023 arg.mReplace = replace; 6024 arg.mNewStart = newStart; 6025 arg.mNewEnd = newEnd; 6026 mTextGeneration++; 6027 arg.mTextGeneration = mTextGeneration; 6028 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6029 } 6030 6031 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6032 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6033 arg.mEvent = event; 6034 arg.mCurrentText = currentText; 6035 // Increase our text generation number, and pass it to webcore thread 6036 mTextGeneration++; 6037 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6038 // WebKit's document state is not saved until about to leave the page. 6039 // To make sure the host application, like Browser, has the up to date 6040 // document state when it goes to background, we force to save the 6041 // document state. 6042 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6043 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6044 cursorData(), 1000); 6045 } 6046 6047 /* package */ synchronized WebViewCore getWebViewCore() { 6048 return mWebViewCore; 6049 } 6050 6051 //------------------------------------------------------------------------- 6052 // Methods can be called from a separate thread, like WebViewCore 6053 // If it needs to call the View system, it has to send message. 6054 //------------------------------------------------------------------------- 6055 6056 /** 6057 * General handler to receive message coming from webkit thread 6058 */ 6059 class PrivateHandler extends Handler { 6060 @Override 6061 public void handleMessage(Message msg) { 6062 // exclude INVAL_RECT_MSG_ID since it is frequently output 6063 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6064 if (msg.what >= FIRST_PRIVATE_MSG_ID 6065 && msg.what <= LAST_PRIVATE_MSG_ID) { 6066 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6067 - FIRST_PRIVATE_MSG_ID]); 6068 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6069 && msg.what <= LAST_PACKAGE_MSG_ID) { 6070 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6071 - FIRST_PACKAGE_MSG_ID]); 6072 } else { 6073 Log.v(LOGTAG, Integer.toString(msg.what)); 6074 } 6075 } 6076 if (mWebViewCore == null) { 6077 // after WebView's destroy() is called, skip handling messages. 6078 return; 6079 } 6080 switch (msg.what) { 6081 case REMEMBER_PASSWORD: { 6082 mDatabase.setUsernamePassword( 6083 msg.getData().getString("host"), 6084 msg.getData().getString("username"), 6085 msg.getData().getString("password")); 6086 ((Message) msg.obj).sendToTarget(); 6087 break; 6088 } 6089 case NEVER_REMEMBER_PASSWORD: { 6090 mDatabase.setUsernamePassword( 6091 msg.getData().getString("host"), null, null); 6092 ((Message) msg.obj).sendToTarget(); 6093 break; 6094 } 6095 case PREVENT_DEFAULT_TIMEOUT: { 6096 // if timeout happens, cancel it so that it won't block UI 6097 // to continue handling touch events 6098 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6099 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6100 || (msg.arg1 == MotionEvent.ACTION_MOVE 6101 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6102 cancelWebCoreTouchEvent( 6103 viewToContentX((int) mLastTouchX + mScrollX), 6104 viewToContentY((int) mLastTouchY + mScrollY), 6105 true); 6106 } 6107 break; 6108 } 6109 case SWITCH_TO_SHORTPRESS: { 6110 if (mTouchMode == TOUCH_INIT_MODE) { 6111 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6112 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6113 updateSelection(); 6114 } else { 6115 // set to TOUCH_SHORTPRESS_MODE so that it won't 6116 // trigger double tap any more 6117 mTouchMode = TOUCH_SHORTPRESS_MODE; 6118 } 6119 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6120 mTouchMode = TOUCH_DONE_MODE; 6121 } 6122 break; 6123 } 6124 case SWITCH_TO_LONGPRESS: { 6125 if (inFullScreenMode() || mDeferTouchProcess) { 6126 TouchEventData ted = new TouchEventData(); 6127 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6128 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 6129 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 6130 // metaState for long press is tricky. Should it be the 6131 // state when the press started or when the press was 6132 // released? Or some intermediary key state? For 6133 // simplicity for now, we don't set it. 6134 ted.mMetaState = 0; 6135 ted.mReprocess = mDeferTouchProcess; 6136 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6137 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6138 mTouchMode = TOUCH_DONE_MODE; 6139 performLongClick(); 6140 rebuildWebTextView(); 6141 } 6142 break; 6143 } 6144 case RELEASE_SINGLE_TAP: { 6145 doShortPress(); 6146 break; 6147 } 6148 case SCROLL_BY_MSG_ID: 6149 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6150 break; 6151 case SYNC_SCROLL_TO_MSG_ID: 6152 if (mUserScroll) { 6153 // if user has scrolled explicitly, don't sync the 6154 // scroll position any more 6155 mUserScroll = false; 6156 break; 6157 } 6158 // fall through 6159 case SCROLL_TO_MSG_ID: 6160 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6161 // if we can't scroll to the exact position due to pin, 6162 // send a message to WebCore to re-scroll when we get a 6163 // new picture 6164 mUserScroll = false; 6165 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6166 msg.arg1, msg.arg2); 6167 } 6168 break; 6169 case SPAWN_SCROLL_TO_MSG_ID: 6170 spawnContentScrollTo(msg.arg1, msg.arg2); 6171 break; 6172 case UPDATE_ZOOM_RANGE: { 6173 WebViewCore.RestoreState restoreState 6174 = (WebViewCore.RestoreState) msg.obj; 6175 // mScrollX contains the new minPrefWidth 6176 updateZoomRange(restoreState, getViewWidth(), 6177 restoreState.mScrollX, false); 6178 break; 6179 } 6180 case NEW_PICTURE_MSG_ID: { 6181 WebSettings settings = mWebViewCore.getSettings(); 6182 // called for new content 6183 final int viewWidth = getViewWidth(); 6184 final WebViewCore.DrawData draw = 6185 (WebViewCore.DrawData) msg.obj; 6186 final Point viewSize = draw.mViewPoint; 6187 boolean useWideViewport = settings.getUseWideViewPort(); 6188 WebViewCore.RestoreState restoreState = draw.mRestoreState; 6189 boolean hasRestoreState = restoreState != null; 6190 if (hasRestoreState) { 6191 updateZoomRange(restoreState, viewSize.x, 6192 draw.mMinPrefWidth, true); 6193 if (!mDrawHistory) { 6194 mInZoomOverview = false; 6195 6196 if (mInitialScaleInPercent > 0) { 6197 setNewZoomScale(mInitialScaleInPercent / 100.0f, 6198 mInitialScaleInPercent != mTextWrapScale * 100, 6199 false); 6200 } else if (restoreState.mViewScale > 0) { 6201 mTextWrapScale = restoreState.mTextWrapScale; 6202 setNewZoomScale(restoreState.mViewScale, false, 6203 false); 6204 } else { 6205 mInZoomOverview = useWideViewport 6206 && settings.getLoadWithOverviewMode(); 6207 float scale; 6208 if (mInZoomOverview) { 6209 scale = (float) viewWidth 6210 / DEFAULT_VIEWPORT_WIDTH; 6211 } else { 6212 scale = restoreState.mTextWrapScale; 6213 } 6214 setNewZoomScale(scale, Math.abs(scale 6215 - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT, 6216 false); 6217 } 6218 setContentScrollTo(restoreState.mScrollX, 6219 restoreState.mScrollY); 6220 // As we are on a new page, remove the WebTextView. This 6221 // is necessary for page loads driven by webkit, and in 6222 // particular when the user was on a password field, so 6223 // the WebTextView was visible. 6224 clearTextEntry(false); 6225 // update the zoom buttons as the scale can be changed 6226 if (getSettings().getBuiltInZoomControls()) { 6227 updateZoomButtonsEnabled(); 6228 } 6229 } 6230 } 6231 // We update the layout (i.e. request a layout from the 6232 // view system) if the last view size that we sent to 6233 // WebCore matches the view size of the picture we just 6234 // received in the fixed dimension. 6235 final boolean updateLayout = viewSize.x == mLastWidthSent 6236 && viewSize.y == mLastHeightSent; 6237 recordNewContentSize(draw.mWidthHeight.x, 6238 draw.mWidthHeight.y 6239 + (mFindIsUp ? mFindHeight : 0), updateLayout); 6240 if (DebugFlags.WEB_VIEW) { 6241 Rect b = draw.mInvalRegion.getBounds(); 6242 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6243 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6244 } 6245 invalidateContentRect(draw.mInvalRegion.getBounds()); 6246 if (mPictureListener != null) { 6247 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6248 } 6249 if (useWideViewport) { 6250 // limit mZoomOverviewWidth upper bound to 6251 // sMaxViewportWidth so that if the page doesn't behave 6252 // well, the WebView won't go insane. limit the lower 6253 // bound to match the default scale for mobile sites. 6254 mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math 6255 .max((int) (viewWidth / mDefaultScale), Math 6256 .max(draw.mMinPrefWidth, 6257 draw.mViewPoint.x))); 6258 } 6259 if (!mMinZoomScaleFixed) { 6260 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 6261 } 6262 if (!mDrawHistory && mInZoomOverview) { 6263 // fit the content width to the current view. Ignore 6264 // the rounding error case. 6265 if (Math.abs((viewWidth * mInvActualScale) 6266 - mZoomOverviewWidth) > 1) { 6267 setNewZoomScale((float) viewWidth 6268 / mZoomOverviewWidth, Math.abs(mActualScale 6269 - mTextWrapScale) < MINIMUM_SCALE_INCREMENT, 6270 false); 6271 } 6272 } 6273 if (draw.mFocusSizeChanged && inEditingMode()) { 6274 mFocusSizeChanged = true; 6275 } 6276 if (hasRestoreState) { 6277 mViewManager.postReadyToDrawAll(); 6278 } 6279 break; 6280 } 6281 case WEBCORE_INITIALIZED_MSG_ID: 6282 // nativeCreate sets mNativeClass to a non-zero value 6283 nativeCreate(msg.arg1); 6284 break; 6285 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6286 // Make sure that the textfield is currently focused 6287 // and representing the same node as the pointer. 6288 if (inEditingMode() && 6289 mWebTextView.isSameTextField(msg.arg1)) { 6290 if (msg.getData().getBoolean("password")) { 6291 Spannable text = (Spannable) mWebTextView.getText(); 6292 int start = Selection.getSelectionStart(text); 6293 int end = Selection.getSelectionEnd(text); 6294 mWebTextView.setInPassword(true); 6295 // Restore the selection, which may have been 6296 // ruined by setInPassword. 6297 Spannable pword = 6298 (Spannable) mWebTextView.getText(); 6299 Selection.setSelection(pword, start, end); 6300 // If the text entry has created more events, ignore 6301 // this one. 6302 } else if (msg.arg2 == mTextGeneration) { 6303 mWebTextView.setTextAndKeepSelection( 6304 (String) msg.obj); 6305 } 6306 } 6307 break; 6308 case UPDATE_TEXT_SELECTION_MSG_ID: 6309 // If no textfield was in focus, and the user touched one, 6310 // causing it to send this message, then WebTextView has not 6311 // been set up yet. Rebuild it so it can set its selection. 6312 rebuildWebTextView(); 6313 if (inEditingMode() 6314 && mWebTextView.isSameTextField(msg.arg1) 6315 && msg.arg2 == mTextGeneration) { 6316 WebViewCore.TextSelectionData tData 6317 = (WebViewCore.TextSelectionData) msg.obj; 6318 mWebTextView.setSelectionFromWebKit(tData.mStart, 6319 tData.mEnd); 6320 } 6321 break; 6322 case RETURN_LABEL: 6323 if (inEditingMode() 6324 && mWebTextView.isSameTextField(msg.arg1)) { 6325 mWebTextView.setHint((String) msg.obj); 6326 InputMethodManager imm 6327 = InputMethodManager.peekInstance(); 6328 // The hint is propagated to the IME in 6329 // onCreateInputConnection. If the IME is already 6330 // active, restart it so that its hint text is updated. 6331 if (imm != null && imm.isActive(mWebTextView)) { 6332 imm.restartInput(mWebTextView); 6333 } 6334 } 6335 break; 6336 case MOVE_OUT_OF_PLUGIN: 6337 navHandledKey(msg.arg1, 1, false, 0); 6338 break; 6339 case UPDATE_TEXT_ENTRY_MSG_ID: 6340 // this is sent after finishing resize in WebViewCore. Make 6341 // sure the text edit box is still on the screen. 6342 if (inEditingMode() && nativeCursorIsTextInput()) { 6343 mWebTextView.bringIntoView(); 6344 rebuildWebTextView(); 6345 } 6346 break; 6347 case CLEAR_TEXT_ENTRY: 6348 clearTextEntry(false); 6349 break; 6350 case INVAL_RECT_MSG_ID: { 6351 Rect r = (Rect)msg.obj; 6352 if (r == null) { 6353 invalidate(); 6354 } else { 6355 // we need to scale r from content into view coords, 6356 // which viewInvalidate() does for us 6357 viewInvalidate(r.left, r.top, r.right, r.bottom); 6358 } 6359 break; 6360 } 6361 case IMMEDIATE_REPAINT_MSG_ID: { 6362 invalidate(); 6363 break; 6364 } 6365 case SET_ROOT_LAYER_MSG_ID: { 6366 nativeSetRootLayer(msg.arg1); 6367 invalidate(); 6368 break; 6369 } 6370 case REQUEST_FORM_DATA: 6371 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6372 if (mWebTextView.isSameTextField(msg.arg1)) { 6373 mWebTextView.setAdapterCustom(adapter); 6374 } 6375 break; 6376 case RESUME_WEBCORE_PRIORITY: 6377 WebViewCore.resumePriority(); 6378 break; 6379 6380 case LONG_PRESS_CENTER: 6381 // as this is shared by keydown and trackballdown, reset all 6382 // the states 6383 mGotCenterDown = false; 6384 mTrackballDown = false; 6385 performLongClick(); 6386 break; 6387 6388 case WEBCORE_NEED_TOUCH_EVENTS: 6389 mForwardTouchEvents = (msg.arg1 != 0); 6390 break; 6391 6392 case PREVENT_TOUCH_ID: 6393 if (inFullScreenMode()) { 6394 break; 6395 } 6396 if (msg.obj == null) { 6397 if (msg.arg1 == MotionEvent.ACTION_DOWN 6398 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 6399 // if prevent default is called from WebCore, UI 6400 // will not handle the rest of the touch events any 6401 // more. 6402 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6403 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 6404 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 6405 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6406 // the return for the first ACTION_MOVE will decide 6407 // whether UI will handle touch or not. Currently no 6408 // support for alternating prevent default 6409 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6410 : PREVENT_DEFAULT_NO; 6411 } 6412 } else if (msg.arg2 == 0) { 6413 // prevent default is not called in WebCore, so the 6414 // message needs to be reprocessed in UI 6415 TouchEventData ted = (TouchEventData) msg.obj; 6416 switch (ted.mAction) { 6417 case MotionEvent.ACTION_DOWN: 6418 mLastDeferTouchX = contentToViewX(ted.mX) 6419 - mScrollX; 6420 mLastDeferTouchY = contentToViewY(ted.mY) 6421 - mScrollY; 6422 mDeferTouchMode = TOUCH_INIT_MODE; 6423 break; 6424 case MotionEvent.ACTION_MOVE: { 6425 // no snapping in defer process 6426 int x = contentToViewX(ted.mX) - mScrollX; 6427 int y = contentToViewY(ted.mY) - mScrollY; 6428 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 6429 mDeferTouchMode = TOUCH_DRAG_MODE; 6430 mLastDeferTouchX = x; 6431 mLastDeferTouchY = y; 6432 startDrag(); 6433 } 6434 doDrag((int) (mLastDeferTouchX - x), 6435 (int) (mLastDeferTouchY - y)); 6436 mLastDeferTouchX = x; 6437 mLastDeferTouchY = y; 6438 break; 6439 } 6440 case MotionEvent.ACTION_UP: 6441 case MotionEvent.ACTION_CANCEL: 6442 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 6443 // no fling in defer process 6444 mScroller.springback(mScrollX, mScrollY, 0, 6445 computeMaxScrollX(), 0, 6446 computeMaxScrollY()); 6447 invalidate(); 6448 WebViewCore.resumePriority(); 6449 } 6450 mDeferTouchMode = TOUCH_DONE_MODE; 6451 break; 6452 case WebViewCore.ACTION_DOUBLETAP: 6453 // doDoubleTap() needs mLastTouchX/Y as anchor 6454 mLastTouchX = contentToViewX(ted.mX) - mScrollX; 6455 mLastTouchY = contentToViewY(ted.mY) - mScrollY; 6456 doDoubleTap(); 6457 mDeferTouchMode = TOUCH_DONE_MODE; 6458 break; 6459 case WebViewCore.ACTION_LONGPRESS: 6460 HitTestResult hitTest = getHitTestResult(); 6461 if (hitTest != null && hitTest.mType 6462 != HitTestResult.UNKNOWN_TYPE) { 6463 performLongClick(); 6464 rebuildWebTextView(); 6465 } 6466 mDeferTouchMode = TOUCH_DONE_MODE; 6467 break; 6468 } 6469 } 6470 break; 6471 6472 case REQUEST_KEYBOARD: 6473 if (msg.arg1 == 0) { 6474 hideSoftKeyboard(); 6475 } else { 6476 displaySoftKeyboard(1 == msg.arg2); 6477 } 6478 break; 6479 6480 case FIND_AGAIN: 6481 // Ignore if find has been dismissed. 6482 if (mFindIsUp) { 6483 findAll(mLastFind); 6484 } 6485 break; 6486 6487 case DRAG_HELD_MOTIONLESS: 6488 mHeldMotionless = MOTIONLESS_TRUE; 6489 invalidate(); 6490 // fall through to keep scrollbars awake 6491 6492 case AWAKEN_SCROLL_BARS: 6493 if (mTouchMode == TOUCH_DRAG_MODE 6494 && mHeldMotionless == MOTIONLESS_TRUE) { 6495 awakenScrollBars(ViewConfiguration 6496 .getScrollDefaultDelay(), false); 6497 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6498 .obtainMessage(AWAKEN_SCROLL_BARS), 6499 ViewConfiguration.getScrollDefaultDelay()); 6500 } 6501 break; 6502 6503 case DO_MOTION_UP: 6504 doMotionUp(msg.arg1, msg.arg2); 6505 break; 6506 6507 case SHOW_FULLSCREEN: { 6508 WebViewCore.PluginFullScreenData data 6509 = (WebViewCore.PluginFullScreenData) msg.obj; 6510 if (data.mNpp != 0 && data.mView != null) { 6511 if (inFullScreenMode()) { 6512 Log.w(LOGTAG, 6513 "Should not have another full screen."); 6514 mFullScreenHolder.dismiss(); 6515 } 6516 mFullScreenHolder = new PluginFullScreenHolder( 6517 WebView.this, data.mNpp); 6518 // as we are sharing the View between full screen and 6519 // embedded mode, we have to remove the 6520 // AbsoluteLayout.LayoutParams set by embedded mode to 6521 // ViewGroup.LayoutParams before adding it to the dialog 6522 data.mView.setLayoutParams(new FrameLayout.LayoutParams( 6523 ViewGroup.LayoutParams.FILL_PARENT, 6524 ViewGroup.LayoutParams.FILL_PARENT)); 6525 mFullScreenHolder.setContentView(data.mView); 6526 mFullScreenHolder.setCancelable(false); 6527 mFullScreenHolder.setCanceledOnTouchOutside(false); 6528 mFullScreenHolder.show(); 6529 } else if (!inFullScreenMode()) { 6530 // this may happen if user dismisses the fullscreen and 6531 // then the WebCore re-position message finally reached 6532 // the UI thread. 6533 break; 6534 } 6535 // move the matching embedded view fully into the view so 6536 // that touch will be valid instead of rejected due to out 6537 // of the visible bounds 6538 // TODO: do we need to preserve the original position and 6539 // scale so that we can revert it when leaving the full 6540 // screen mode? 6541 int x = contentToViewX(data.mDocX); 6542 int y = contentToViewY(data.mDocY); 6543 int width = contentToViewDimension(data.mDocWidth); 6544 int height = contentToViewDimension(data.mDocHeight); 6545 int viewWidth = getViewWidth(); 6546 int viewHeight = getViewHeight(); 6547 int newX = mScrollX; 6548 int newY = mScrollY; 6549 if (x < mScrollX) { 6550 newX = x + (width > viewWidth 6551 ? (width - viewWidth) / 2 : 0); 6552 } else if (x + width > mScrollX + viewWidth) { 6553 newX = x + width - viewWidth - (width > viewWidth 6554 ? (width - viewWidth) / 2 : 0); 6555 } 6556 if (y < mScrollY) { 6557 newY = y + (height > viewHeight 6558 ? (height - viewHeight) / 2 : 0); 6559 } else if (y + height > mScrollY + viewHeight) { 6560 newY = y + height - viewHeight - (height > viewHeight 6561 ? (height - viewHeight) / 2 : 0); 6562 } 6563 scrollTo(newX, newY); 6564 if (width > viewWidth || height > viewHeight) { 6565 mZoomCenterX = viewWidth * .5f; 6566 mZoomCenterY = viewHeight * .5f; 6567 // do not change text wrap scale so that there is no 6568 // reflow 6569 setNewZoomScale(mActualScale 6570 / Math.max((float) width / viewWidth, 6571 (float) height / viewHeight), false, 6572 false); 6573 } 6574 // Now update the bound 6575 mFullScreenHolder.updateBound(contentToViewX(data.mDocX) 6576 - mScrollX, contentToViewY(data.mDocY) - mScrollY, 6577 contentToViewDimension(data.mDocWidth), 6578 contentToViewDimension(data.mDocHeight)); 6579 } 6580 break; 6581 6582 case HIDE_FULLSCREEN: 6583 if (inFullScreenMode()) { 6584 mFullScreenHolder.dismiss(); 6585 mFullScreenHolder = null; 6586 } 6587 break; 6588 6589 case DOM_FOCUS_CHANGED: 6590 if (inEditingMode()) { 6591 nativeClearCursor(); 6592 rebuildWebTextView(); 6593 } 6594 break; 6595 6596 case SHOW_RECT_MSG_ID: { 6597 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6598 int x = mScrollX; 6599 int left = contentToViewX(data.mLeft); 6600 int width = contentToViewDimension(data.mWidth); 6601 int maxWidth = contentToViewDimension(data.mContentWidth); 6602 int viewWidth = getViewWidth(); 6603 if (width < viewWidth) { 6604 // center align 6605 x += left + width / 2 - mScrollX - viewWidth / 2; 6606 } else { 6607 x += (int) (left + data.mXPercentInDoc * width 6608 - mScrollX - data.mXPercentInView * viewWidth); 6609 } 6610 if (DebugFlags.WEB_VIEW) { 6611 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6612 width + ",maxWidth=" + maxWidth + 6613 ",viewWidth=" + viewWidth + ",x=" 6614 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6615 ",xPercentInView=" + data.mXPercentInView+ ")"); 6616 } 6617 // use the passing content width to cap x as the current 6618 // mContentWidth may not be updated yet 6619 x = Math.max(0, 6620 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6621 int top = contentToViewY(data.mTop); 6622 int height = contentToViewDimension(data.mHeight); 6623 int maxHeight = contentToViewDimension(data.mContentHeight); 6624 int viewHeight = getViewHeight(); 6625 int y = (int) (top + data.mYPercentInDoc * height - 6626 data.mYPercentInView * viewHeight); 6627 if (DebugFlags.WEB_VIEW) { 6628 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6629 height + ",maxHeight=" + maxHeight + 6630 ",viewHeight=" + viewHeight + ",y=" 6631 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6632 ",yPercentInView=" + data.mYPercentInView+ ")"); 6633 } 6634 // use the passing content height to cap y as the current 6635 // mContentHeight may not be updated yet 6636 y = Math.max(0, 6637 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6638 // We need to take into account the visible title height 6639 // when scrolling since y is an absolute view position. 6640 y = Math.max(0, y - getVisibleTitleHeight()); 6641 scrollTo(x, y); 6642 } 6643 break; 6644 6645 default: 6646 super.handleMessage(msg); 6647 break; 6648 } 6649 } 6650 } 6651 6652 // Class used to use a dropdown for a <select> element 6653 private class InvokeListBox implements Runnable { 6654 // Whether the listbox allows multiple selection. 6655 private boolean mMultiple; 6656 // Passed in to a list with multiple selection to tell 6657 // which items are selected. 6658 private int[] mSelectedArray; 6659 // Passed in to a list with single selection to tell 6660 // where the initial selection is. 6661 private int mSelection; 6662 6663 private Container[] mContainers; 6664 6665 // Need these to provide stable ids to my ArrayAdapter, 6666 // which normally does not have stable ids. (Bug 1250098) 6667 private class Container extends Object { 6668 /** 6669 * Possible values for mEnabled. Keep in sync with OptionStatus in 6670 * WebViewCore.cpp 6671 */ 6672 final static int OPTGROUP = -1; 6673 final static int OPTION_DISABLED = 0; 6674 final static int OPTION_ENABLED = 1; 6675 6676 String mString; 6677 int mEnabled; 6678 int mId; 6679 6680 public String toString() { 6681 return mString; 6682 } 6683 } 6684 6685 /** 6686 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6687 * and allow filtering. 6688 */ 6689 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6690 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6691 super(context, 6692 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6693 com.android.internal.R.layout.select_dialog_singlechoice, 6694 objects); 6695 } 6696 6697 @Override 6698 public View getView(int position, View convertView, 6699 ViewGroup parent) { 6700 // Always pass in null so that we will get a new CheckedTextView 6701 // Otherwise, an item which was previously used as an <optgroup> 6702 // element (i.e. has no check), could get used as an <option> 6703 // element, which needs a checkbox/radio, but it would not have 6704 // one. 6705 convertView = super.getView(position, null, parent); 6706 Container c = item(position); 6707 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6708 // ListView does not draw dividers between disabled and 6709 // enabled elements. Use a LinearLayout to provide dividers 6710 LinearLayout layout = new LinearLayout(mContext); 6711 layout.setOrientation(LinearLayout.VERTICAL); 6712 if (position > 0) { 6713 View dividerTop = new View(mContext); 6714 dividerTop.setBackgroundResource( 6715 android.R.drawable.divider_horizontal_bright); 6716 layout.addView(dividerTop); 6717 } 6718 6719 if (Container.OPTGROUP == c.mEnabled) { 6720 // Currently select_dialog_multichoice and 6721 // select_dialog_singlechoice are CheckedTextViews. If 6722 // that changes, the class cast will no longer be valid. 6723 Assert.assertTrue( 6724 convertView instanceof CheckedTextView); 6725 ((CheckedTextView) convertView).setCheckMarkDrawable( 6726 null); 6727 } else { 6728 // c.mEnabled == Container.OPTION_DISABLED 6729 // Draw the disabled element in a disabled state. 6730 convertView.setEnabled(false); 6731 } 6732 6733 layout.addView(convertView); 6734 if (position < getCount() - 1) { 6735 View dividerBottom = new View(mContext); 6736 dividerBottom.setBackgroundResource( 6737 android.R.drawable.divider_horizontal_bright); 6738 layout.addView(dividerBottom); 6739 } 6740 return layout; 6741 } 6742 return convertView; 6743 } 6744 6745 @Override 6746 public boolean hasStableIds() { 6747 // AdapterView's onChanged method uses this to determine whether 6748 // to restore the old state. Return false so that the old (out 6749 // of date) state does not replace the new, valid state. 6750 return false; 6751 } 6752 6753 private Container item(int position) { 6754 if (position < 0 || position >= getCount()) { 6755 return null; 6756 } 6757 return (Container) getItem(position); 6758 } 6759 6760 @Override 6761 public long getItemId(int position) { 6762 Container item = item(position); 6763 if (item == null) { 6764 return -1; 6765 } 6766 return item.mId; 6767 } 6768 6769 @Override 6770 public boolean areAllItemsEnabled() { 6771 return false; 6772 } 6773 6774 @Override 6775 public boolean isEnabled(int position) { 6776 Container item = item(position); 6777 if (item == null) { 6778 return false; 6779 } 6780 return Container.OPTION_ENABLED == item.mEnabled; 6781 } 6782 } 6783 6784 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 6785 mMultiple = true; 6786 mSelectedArray = selected; 6787 6788 int length = array.length; 6789 mContainers = new Container[length]; 6790 for (int i = 0; i < length; i++) { 6791 mContainers[i] = new Container(); 6792 mContainers[i].mString = array[i]; 6793 mContainers[i].mEnabled = enabled[i]; 6794 mContainers[i].mId = i; 6795 } 6796 } 6797 6798 private InvokeListBox(String[] array, int[] enabled, int selection) { 6799 mSelection = selection; 6800 mMultiple = false; 6801 6802 int length = array.length; 6803 mContainers = new Container[length]; 6804 for (int i = 0; i < length; i++) { 6805 mContainers[i] = new Container(); 6806 mContainers[i].mString = array[i]; 6807 mContainers[i].mEnabled = enabled[i]; 6808 mContainers[i].mId = i; 6809 } 6810 } 6811 6812 /* 6813 * Whenever the data set changes due to filtering, this class ensures 6814 * that the checked item remains checked. 6815 */ 6816 private class SingleDataSetObserver extends DataSetObserver { 6817 private long mCheckedId; 6818 private ListView mListView; 6819 private Adapter mAdapter; 6820 6821 /* 6822 * Create a new observer. 6823 * @param id The ID of the item to keep checked. 6824 * @param l ListView for getting and clearing the checked states 6825 * @param a Adapter for getting the IDs 6826 */ 6827 public SingleDataSetObserver(long id, ListView l, Adapter a) { 6828 mCheckedId = id; 6829 mListView = l; 6830 mAdapter = a; 6831 } 6832 6833 public void onChanged() { 6834 // The filter may have changed which item is checked. Find the 6835 // item that the ListView thinks is checked. 6836 int position = mListView.getCheckedItemPosition(); 6837 long id = mAdapter.getItemId(position); 6838 if (mCheckedId != id) { 6839 // Clear the ListView's idea of the checked item, since 6840 // it is incorrect 6841 mListView.clearChoices(); 6842 // Search for mCheckedId. If it is in the filtered list, 6843 // mark it as checked 6844 int count = mAdapter.getCount(); 6845 for (int i = 0; i < count; i++) { 6846 if (mAdapter.getItemId(i) == mCheckedId) { 6847 mListView.setItemChecked(i, true); 6848 break; 6849 } 6850 } 6851 } 6852 } 6853 6854 public void onInvalidate() {} 6855 } 6856 6857 public void run() { 6858 final ListView listView = (ListView) LayoutInflater.from(mContext) 6859 .inflate(com.android.internal.R.layout.select_dialog, null); 6860 final MyArrayListAdapter adapter = new 6861 MyArrayListAdapter(mContext, mContainers, mMultiple); 6862 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 6863 .setView(listView).setCancelable(true) 6864 .setInverseBackgroundForced(true); 6865 6866 if (mMultiple) { 6867 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 6868 public void onClick(DialogInterface dialog, int which) { 6869 mWebViewCore.sendMessage( 6870 EventHub.LISTBOX_CHOICES, 6871 adapter.getCount(), 0, 6872 listView.getCheckedItemPositions()); 6873 }}); 6874 b.setNegativeButton(android.R.string.cancel, 6875 new DialogInterface.OnClickListener() { 6876 public void onClick(DialogInterface dialog, int which) { 6877 mWebViewCore.sendMessage( 6878 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6879 }}); 6880 } 6881 final AlertDialog dialog = b.create(); 6882 listView.setAdapter(adapter); 6883 listView.setFocusableInTouchMode(true); 6884 // There is a bug (1250103) where the checks in a ListView with 6885 // multiple items selected are associated with the positions, not 6886 // the ids, so the items do not properly retain their checks when 6887 // filtered. Do not allow filtering on multiple lists until 6888 // that bug is fixed. 6889 6890 listView.setTextFilterEnabled(!mMultiple); 6891 if (mMultiple) { 6892 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 6893 int length = mSelectedArray.length; 6894 for (int i = 0; i < length; i++) { 6895 listView.setItemChecked(mSelectedArray[i], true); 6896 } 6897 } else { 6898 listView.setOnItemClickListener(new OnItemClickListener() { 6899 public void onItemClick(AdapterView parent, View v, 6900 int position, long id) { 6901 mWebViewCore.sendMessage( 6902 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 6903 dialog.dismiss(); 6904 } 6905 }); 6906 if (mSelection != -1) { 6907 listView.setSelection(mSelection); 6908 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 6909 listView.setItemChecked(mSelection, true); 6910 DataSetObserver observer = new SingleDataSetObserver( 6911 adapter.getItemId(mSelection), listView, adapter); 6912 adapter.registerDataSetObserver(observer); 6913 } 6914 } 6915 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 6916 public void onCancel(DialogInterface dialog) { 6917 mWebViewCore.sendMessage( 6918 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6919 } 6920 }); 6921 dialog.show(); 6922 } 6923 } 6924 6925 /* 6926 * Request a dropdown menu for a listbox with multiple selection. 6927 * 6928 * @param array Labels for the listbox. 6929 * @param enabledArray State for each element in the list. See static 6930 * integers in Container class. 6931 * @param selectedArray Which positions are initally selected. 6932 */ 6933 void requestListBox(String[] array, int[] enabledArray, int[] 6934 selectedArray) { 6935 mPrivateHandler.post( 6936 new InvokeListBox(array, enabledArray, selectedArray)); 6937 } 6938 6939 private void updateZoomRange(WebViewCore.RestoreState restoreState, 6940 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 6941 if (restoreState.mMinScale == 0) { 6942 if (restoreState.mMobileSite) { 6943 if (minPrefWidth > Math.max(0, viewWidth)) { 6944 mMinZoomScale = (float) viewWidth / minPrefWidth; 6945 mMinZoomScaleFixed = false; 6946 if (updateZoomOverview) { 6947 WebSettings settings = getSettings(); 6948 mInZoomOverview = settings.getUseWideViewPort() && 6949 settings.getLoadWithOverviewMode(); 6950 } 6951 } else { 6952 mMinZoomScale = restoreState.mDefaultScale; 6953 mMinZoomScaleFixed = true; 6954 } 6955 } else { 6956 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 6957 mMinZoomScaleFixed = false; 6958 } 6959 } else { 6960 mMinZoomScale = restoreState.mMinScale; 6961 mMinZoomScaleFixed = true; 6962 } 6963 if (restoreState.mMaxScale == 0) { 6964 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 6965 } else { 6966 mMaxZoomScale = restoreState.mMaxScale; 6967 } 6968 } 6969 6970 /* 6971 * Request a dropdown menu for a listbox with single selection or a single 6972 * <select> element. 6973 * 6974 * @param array Labels for the listbox. 6975 * @param enabledArray State for each element in the list. See static 6976 * integers in Container class. 6977 * @param selection Which position is initally selected. 6978 */ 6979 void requestListBox(String[] array, int[] enabledArray, int selection) { 6980 mPrivateHandler.post( 6981 new InvokeListBox(array, enabledArray, selection)); 6982 } 6983 6984 // called by JNI 6985 private void sendMoveFocus(int frame, int node) { 6986 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 6987 new WebViewCore.CursorData(frame, node, 0, 0)); 6988 } 6989 6990 // called by JNI 6991 private void sendMoveMouse(int frame, int node, int x, int y) { 6992 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 6993 new WebViewCore.CursorData(frame, node, x, y)); 6994 } 6995 6996 /* 6997 * Send a mouse move event to the webcore thread. 6998 * 6999 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7000 * which wants key events, but it is not the focus. This 7001 * will make the visual appear as though nothing is in 7002 * focus. Remove the WebTextView, if present, and stop 7003 * drawing the blinking caret. 7004 * called by JNI 7005 */ 7006 private void sendMoveMouseIfLatest(boolean removeFocus) { 7007 if (removeFocus) { 7008 clearTextEntry(true); 7009 } 7010 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7011 cursorData()); 7012 } 7013 7014 // called by JNI 7015 private void sendMotionUp(int touchGeneration, 7016 int frame, int node, int x, int y) { 7017 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7018 touchUpData.mMoveGeneration = touchGeneration; 7019 touchUpData.mFrame = frame; 7020 touchUpData.mNode = node; 7021 touchUpData.mX = x; 7022 touchUpData.mY = y; 7023 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7024 } 7025 7026 7027 private int getScaledMaxXScroll() { 7028 int width; 7029 if (mHeightCanMeasure == false) { 7030 width = getViewWidth() / 4; 7031 } else { 7032 Rect visRect = new Rect(); 7033 calcOurVisibleRect(visRect); 7034 width = visRect.width() / 2; 7035 } 7036 // FIXME the divisor should be retrieved from somewhere 7037 return viewToContentX(width); 7038 } 7039 7040 private int getScaledMaxYScroll() { 7041 int height; 7042 if (mHeightCanMeasure == false) { 7043 height = getViewHeight() / 4; 7044 } else { 7045 Rect visRect = new Rect(); 7046 calcOurVisibleRect(visRect); 7047 height = visRect.height() / 2; 7048 } 7049 // FIXME the divisor should be retrieved from somewhere 7050 // the closest thing today is hard-coded into ScrollView.java 7051 // (from ScrollView.java, line 363) int maxJump = height/2; 7052 return Math.round(height * mInvActualScale); 7053 } 7054 7055 /** 7056 * Called by JNI to invalidate view 7057 */ 7058 private void viewInvalidate() { 7059 invalidate(); 7060 } 7061 7062 /** 7063 * Pass the key to the plugin. This assumes that nativeFocusIsPlugin() 7064 * returned true. 7065 */ 7066 private void letPluginHandleNavKey(int keyCode, long time, boolean down) { 7067 int keyEventAction; 7068 int eventHubAction; 7069 if (down) { 7070 keyEventAction = KeyEvent.ACTION_DOWN; 7071 eventHubAction = EventHub.KEY_DOWN; 7072 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7073 } else { 7074 keyEventAction = KeyEvent.ACTION_UP; 7075 eventHubAction = EventHub.KEY_UP; 7076 } 7077 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7078 1, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 7079 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 7080 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 7081 , 0, 0, 0); 7082 mWebViewCore.sendMessage(eventHubAction, event); 7083 } 7084 7085 // return true if the key was handled 7086 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7087 long time) { 7088 if (mNativeClass == 0) { 7089 return false; 7090 } 7091 mLastCursorTime = time; 7092 mLastCursorBounds = nativeGetCursorRingBounds(); 7093 boolean keyHandled 7094 = nativeMoveCursor(keyCode, count, noScroll) == false; 7095 if (DebugFlags.WEB_VIEW) { 7096 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7097 + " mLastCursorTime=" + mLastCursorTime 7098 + " handled=" + keyHandled); 7099 } 7100 if (keyHandled == false || mHeightCanMeasure == false) { 7101 return keyHandled; 7102 } 7103 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7104 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7105 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7106 Rect visRect = new Rect(); 7107 calcOurVisibleRect(visRect); 7108 Rect outset = new Rect(visRect); 7109 int maxXScroll = visRect.width() / 2; 7110 int maxYScroll = visRect.height() / 2; 7111 outset.inset(-maxXScroll, -maxYScroll); 7112 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7113 return keyHandled; 7114 } 7115 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7116 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7117 maxXScroll); 7118 if (maxH > 0) { 7119 pinScrollBy(maxH, 0, true, 0); 7120 } else { 7121 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7122 -maxXScroll); 7123 if (maxH < 0) { 7124 pinScrollBy(maxH, 0, true, 0); 7125 } 7126 } 7127 if (mLastCursorBounds.isEmpty()) return keyHandled; 7128 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7129 return keyHandled; 7130 } 7131 if (DebugFlags.WEB_VIEW) { 7132 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7133 + contentCursorRingBounds); 7134 } 7135 requestRectangleOnScreen(viewCursorRingBounds); 7136 mUserScroll = true; 7137 return keyHandled; 7138 } 7139 7140 /** 7141 * Set the background color. It's white by default. Pass 7142 * zero to make the view transparent. 7143 * @param color the ARGB color described by Color.java 7144 */ 7145 public void setBackgroundColor(int color) { 7146 mBackgroundColor = color; 7147 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7148 } 7149 7150 public void debugDump() { 7151 nativeDebugDump(); 7152 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7153 } 7154 7155 /** 7156 * Draw the HTML page into the specified canvas. This call ignores any 7157 * view-specific zoom, scroll offset, or other changes. It does not draw 7158 * any view-specific chrome, such as progress or URL bars. 7159 * 7160 * @hide only needs to be accessible to Browser and testing 7161 */ 7162 public void drawPage(Canvas canvas) { 7163 mWebViewCore.drawContentPicture(canvas, 0, false, false); 7164 } 7165 7166 /** 7167 * Set the time to wait between passing touches to WebCore. See also the 7168 * TOUCH_SENT_INTERVAL member for further discussion. 7169 * 7170 * @hide This is only used by the DRT test application. 7171 */ 7172 public void setTouchInterval(int interval) { 7173 mCurrentTouchInterval = interval; 7174 } 7175 7176 /** 7177 * Update our cache with updatedText. 7178 * @param updatedText The new text to put in our cache. 7179 */ 7180 /* package */ void updateCachedTextfield(String updatedText) { 7181 // Also place our generation number so that when we look at the cache 7182 // we recognize that it is up to date. 7183 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7184 } 7185 7186 private native int nativeCacheHitFramePointer(); 7187 private native Rect nativeCacheHitNodeBounds(); 7188 private native int nativeCacheHitNodePointer(); 7189 /* package */ native void nativeClearCursor(); 7190 private native void nativeCreate(int ptr); 7191 private native int nativeCursorFramePointer(); 7192 private native Rect nativeCursorNodeBounds(); 7193 private native int nativeCursorNodePointer(); 7194 /* package */ native boolean nativeCursorMatchesFocus(); 7195 private native boolean nativeCursorIntersects(Rect visibleRect); 7196 private native boolean nativeCursorIsAnchor(); 7197 private native boolean nativeCursorIsTextInput(); 7198 private native Point nativeCursorPosition(); 7199 private native String nativeCursorText(); 7200 /** 7201 * Returns true if the native cursor node says it wants to handle key events 7202 * (ala plugins). This can only be called if mNativeClass is non-zero! 7203 */ 7204 private native boolean nativeCursorWantsKeyEvents(); 7205 private native void nativeDebugDump(); 7206 private native void nativeDestroy(); 7207 private native boolean nativeEvaluateLayersAnimations(); 7208 private native void nativeDrawExtras(Canvas canvas, int extra); 7209 private native void nativeDumpDisplayTree(String urlOrNull); 7210 private native int nativeFindAll(String findLower, String findUpper); 7211 private native void nativeFindNext(boolean forward); 7212 /* package */ native int nativeFocusCandidateFramePointer(); 7213 private native boolean nativeFocusCandidateIsPassword(); 7214 private native boolean nativeFocusCandidateIsRtlText(); 7215 private native boolean nativeFocusCandidateIsTextInput(); 7216 /* package */ native int nativeFocusCandidateMaxLength(); 7217 /* package */ native String nativeFocusCandidateName(); 7218 private native Rect nativeFocusCandidateNodeBounds(); 7219 private native int nativeFocusCandidatePointer(); 7220 private native String nativeFocusCandidateText(); 7221 private native int nativeFocusCandidateTextSize(); 7222 /** 7223 * Returns an integer corresponding to WebView.cpp::type. 7224 * See WebTextView.setType() 7225 */ 7226 private native int nativeFocusCandidateType(); 7227 private native boolean nativeFocusIsPlugin(); 7228 /* package */ native int nativeFocusNodePointer(); 7229 private native Rect nativeGetCursorRingBounds(); 7230 private native String nativeGetSelection(); 7231 private native boolean nativeHasCursorNode(); 7232 private native boolean nativeHasFocusNode(); 7233 private native void nativeHideCursor(); 7234 private native String nativeImageURI(int x, int y); 7235 private native void nativeInstrumentReport(); 7236 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7237 // return true if the page has been scrolled 7238 private native boolean nativeMotionUp(int x, int y, int slop); 7239 // returns false if it handled the key 7240 private native boolean nativeMoveCursor(int keyCode, int count, 7241 boolean noScroll); 7242 private native int nativeMoveGeneration(); 7243 private native void nativeMoveSelection(int x, int y, 7244 boolean extendSelection); 7245 private native boolean nativePointInNavCache(int x, int y, int slop); 7246 // Like many other of our native methods, you must make sure that 7247 // mNativeClass is not null before calling this method. 7248 private native void nativeRecordButtons(boolean focused, 7249 boolean pressed, boolean invalidate); 7250 private native void nativeSelectBestAt(Rect rect); 7251 private native void nativeSetFindIsEmpty(); 7252 private native void nativeSetFindIsUp(boolean isUp); 7253 private native void nativeSetFollowedLink(boolean followed); 7254 private native void nativeSetHeightCanMeasure(boolean measure); 7255 private native void nativeSetRootLayer(int layer); 7256 private native void nativeSetSelectionPointer(boolean set, 7257 float scale, int x, int y, boolean extendSelection); 7258 private native void nativeSetSelectionRegion(boolean set); 7259 private native Rect nativeSubtractLayers(Rect content); 7260 private native int nativeTextGeneration(); 7261 // Never call this version except by updateCachedTextfield(String) - 7262 // we always want to pass in our generation number. 7263 private native void nativeUpdateCachedTextfield(String updatedText, 7264 int generation); 7265 // return NO_LEFTEDGE means failure. 7266 private static final int NO_LEFTEDGE = -1; 7267 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 7268} 7269