WebView.java revision 524aab57cdad19514443e52a0710d0e2b148f281
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.annotation.Widget; 20import android.app.AlertDialog; 21import android.content.Context; 22import android.content.DialogInterface; 23import android.content.Intent; 24import android.content.DialogInterface.OnCancelListener; 25import android.content.pm.PackageManager; 26import android.database.DataSetObserver; 27import android.graphics.Bitmap; 28import android.graphics.BitmapFactory; 29import android.graphics.BitmapShader; 30import android.graphics.Canvas; 31import android.graphics.Color; 32import android.graphics.Interpolator; 33import android.graphics.Paint; 34import android.graphics.Picture; 35import android.graphics.Point; 36import android.graphics.Rect; 37import android.graphics.Region; 38import android.graphics.Shader; 39import android.graphics.drawable.Drawable; 40import android.net.Uri; 41import android.net.http.SslCertificate; 42import android.os.Bundle; 43import android.os.Handler; 44import android.os.Message; 45import android.os.ServiceManager; 46import android.os.SystemClock; 47import android.text.IClipboard; 48import android.text.Selection; 49import android.text.Spannable; 50import android.util.AttributeSet; 51import android.util.EventLog; 52import android.util.Log; 53import android.util.TypedValue; 54import android.view.Gravity; 55import android.view.KeyEvent; 56import android.view.LayoutInflater; 57import android.view.MotionEvent; 58import android.view.ScaleGestureDetector; 59import android.view.SoundEffectConstants; 60import android.view.VelocityTracker; 61import android.view.View; 62import android.view.ViewConfiguration; 63import android.view.ViewGroup; 64import android.view.ViewTreeObserver; 65import android.view.animation.AlphaAnimation; 66import android.view.inputmethod.EditorInfo; 67import android.view.inputmethod.InputConnection; 68import android.view.inputmethod.InputMethodManager; 69import android.webkit.WebTextView.AutoCompleteAdapter; 70import android.webkit.WebViewCore.EventHub; 71import android.webkit.WebViewCore.TouchEventData; 72import android.widget.AbsoluteLayout; 73import android.widget.Adapter; 74import android.widget.AdapterView; 75import android.widget.ArrayAdapter; 76import android.widget.CheckedTextView; 77import android.widget.FrameLayout; 78import android.widget.LinearLayout; 79import android.widget.ListView; 80import android.widget.Scroller; 81import android.widget.Toast; 82import android.widget.ZoomButtonsController; 83import android.widget.ZoomControls; 84import android.widget.AdapterView.OnItemClickListener; 85 86import java.io.File; 87import java.io.FileInputStream; 88import java.io.FileNotFoundException; 89import java.io.FileOutputStream; 90import java.io.IOException; 91import java.net.URLDecoder; 92import java.util.ArrayList; 93import java.util.HashMap; 94import java.util.List; 95import java.util.Map; 96import java.util.Set; 97 98import junit.framework.Assert; 99 100/** 101 * <p>A View that displays web pages. This class is the basis upon which you 102 * can roll your own web browser or simply display some online content within your Activity. 103 * It uses the WebKit rendering engine to display 104 * web pages and includes methods to navigate forward and backward 105 * through a history, zoom in and out, perform text searches and more.</p> 106 * <p>To enable the built-in zoom, set 107 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 108 * (introduced in API version 3). 109 * <p>Note that, in order for your Activity to access the Internet and load web pages 110 * in a WebView, you must add the <var>INTERNET</var> permissions to your 111 * Android Manifest file:</p> 112 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 113 * 114 * <p>This must be a child of the <code><manifest></code> element.</p> 115 * 116 * <h3>Basic usage</h3> 117 * 118 * <p>By default, a WebView provides no browser-like widgets, does not 119 * enable JavaScript and errors will be ignored. If your goal is only 120 * to display some HTML as a part of your UI, this is probably fine; 121 * the user won't need to interact with the web page beyond reading 122 * it, and the web page won't need to interact with the user. If you 123 * actually want a fully blown web browser, then you probably want to 124 * invoke the Browser application with your URL rather than show it 125 * with a WebView. See {@link android.content.Intent} for more information.</p> 126 * 127 * <pre class="prettyprint"> 128 * WebView webview = new WebView(this); 129 * setContentView(webview); 130 * 131 * // Simplest usage: note that an exception will NOT be thrown 132 * // if there is an error loading this page (see below). 133 * webview.loadUrl("http://slashdot.org/"); 134 * 135 * // Of course you can also load from any string: 136 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 137 * webview.loadData(summary, "text/html", "utf-8"); 138 * // ... although note that there are restrictions on what this HTML can do. 139 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 140 * </pre> 141 * 142 * <p>A WebView has several customization points where you can add your 143 * own behavior. These are:</p> 144 * 145 * <ul> 146 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 147 * This class is called when something that might impact a 148 * browser UI happens, for instance, progress updates and 149 * JavaScript alerts are sent here. 150 * </li> 151 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 152 * It will be called when things happen that impact the 153 * rendering of the content, eg, errors or form submissions. You 154 * can also intercept URL loading here.</li> 155 * <li>Via the {@link android.webkit.WebSettings} class, which contains 156 * miscellaneous configuration. </li> 157 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 158 * This lets you bind Java objects into the WebView so they can be 159 * controlled from the web pages JavaScript.</li> 160 * </ul> 161 * 162 * <p>Here's a more complicated example, showing error handling, 163 * settings, and progress notification:</p> 164 * 165 * <pre class="prettyprint"> 166 * // Let's display the progress in the activity title bar, like the 167 * // browser app does. 168 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 169 * 170 * webview.getSettings().setJavaScriptEnabled(true); 171 * 172 * final Activity activity = this; 173 * webview.setWebChromeClient(new WebChromeClient() { 174 * public void onProgressChanged(WebView view, int progress) { 175 * // Activities and WebViews measure progress with different scales. 176 * // The progress meter will automatically disappear when we reach 100% 177 * activity.setProgress(progress * 1000); 178 * } 179 * }); 180 * webview.setWebViewClient(new WebViewClient() { 181 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 182 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 183 * } 184 * }); 185 * 186 * webview.loadUrl("http://slashdot.org/"); 187 * </pre> 188 * 189 * <h3>Cookie and window management</h3> 190 * 191 * <p>For obvious security reasons, your application has its own 192 * cache, cookie store etc - it does not share the Browser 193 * applications data. Cookies are managed on a separate thread, so 194 * operations like index building don't block the UI 195 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 196 * if you want to use cookies in your application. 197 * </p> 198 * 199 * <p>By default, requests by the HTML to open new windows are 200 * ignored. This is true whether they be opened by JavaScript or by 201 * the target attribute on a link. You can customize your 202 * WebChromeClient to provide your own behaviour for opening multiple windows, 203 * and render them in whatever manner you want.</p> 204 * 205 * <p>Standard behavior for an Activity is to be destroyed and 206 * recreated when the devices orientation is changed. This will cause 207 * the WebView to reload the current page. If you don't want that, you 208 * can set your Activity to handle the orientation and keyboardHidden 209 * changes, and then just leave the WebView alone. It'll automatically 210 * re-orient itself as appropriate.</p> 211 */ 212@Widget 213public class WebView extends AbsoluteLayout 214 implements ViewTreeObserver.OnGlobalFocusChangeListener, 215 ViewGroup.OnHierarchyChangeListener { 216 217 // enable debug output for drag trackers 218 private static final boolean DEBUG_DRAG_TRACKER = false; 219 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 220 // the screen all-the-time. Good for profiling our drawing code 221 static private final boolean AUTO_REDRAW_HACK = false; 222 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 223 private boolean mAutoRedraw; 224 225 static final String LOGTAG = "webview"; 226 227 private static class ExtendedZoomControls extends FrameLayout { 228 public ExtendedZoomControls(Context context, AttributeSet attrs) { 229 super(context, attrs); 230 LayoutInflater inflater = (LayoutInflater) 231 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 232 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 233 mPlusMinusZoomControls = (ZoomControls) findViewById( 234 com.android.internal.R.id.zoomControls); 235 findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( 236 View.GONE); 237 } 238 239 public void show(boolean showZoom, boolean canZoomOut) { 240 mPlusMinusZoomControls.setVisibility( 241 showZoom ? View.VISIBLE : View.GONE); 242 fade(View.VISIBLE, 0.0f, 1.0f); 243 } 244 245 public void hide() { 246 fade(View.GONE, 1.0f, 0.0f); 247 } 248 249 private void fade(int visibility, float startAlpha, float endAlpha) { 250 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 251 anim.setDuration(500); 252 startAnimation(anim); 253 setVisibility(visibility); 254 } 255 256 public boolean hasFocus() { 257 return mPlusMinusZoomControls.hasFocus(); 258 } 259 260 public void setOnZoomInClickListener(OnClickListener listener) { 261 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 262 } 263 264 public void setOnZoomOutClickListener(OnClickListener listener) { 265 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 266 } 267 268 ZoomControls mPlusMinusZoomControls; 269 } 270 271 /** 272 * Transportation object for returning WebView across thread boundaries. 273 */ 274 public class WebViewTransport { 275 private WebView mWebview; 276 277 /** 278 * Set the WebView to the transportation object. 279 * @param webview The WebView to transport. 280 */ 281 public synchronized void setWebView(WebView webview) { 282 mWebview = webview; 283 } 284 285 /** 286 * Return the WebView object. 287 * @return WebView The transported WebView object. 288 */ 289 public synchronized WebView getWebView() { 290 return mWebview; 291 } 292 } 293 294 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 295 private final CallbackProxy mCallbackProxy; 296 297 private final WebViewDatabase mDatabase; 298 299 // SSL certificate for the main top-level page (if secure) 300 private SslCertificate mCertificate; 301 302 // Native WebView pointer that is 0 until the native object has been 303 // created. 304 private int mNativeClass; 305 // This would be final but it needs to be set to null when the WebView is 306 // destroyed. 307 private WebViewCore mWebViewCore; 308 // Handler for dispatching UI messages. 309 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 310 private WebTextView mWebTextView; 311 // Used to ignore changes to webkit text that arrives to the UI side after 312 // more key events. 313 private int mTextGeneration; 314 315 // Used by WebViewCore to create child views. 316 /* package */ final ViewManager mViewManager; 317 318 // Used to display in full screen mode 319 PluginFullScreenHolder mFullScreenHolder; 320 321 /** 322 * Position of the last touch event. 323 */ 324 private float mLastTouchX; 325 private float mLastTouchY; 326 327 /** 328 * Time of the last touch event. 329 */ 330 private long mLastTouchTime; 331 332 /** 333 * Time of the last time sending touch event to WebViewCore 334 */ 335 private long mLastSentTouchTime; 336 337 /** 338 * The minimum elapsed time before sending another ACTION_MOVE event to 339 * WebViewCore. This really should be tuned for each type of the devices. 340 * For example in Google Map api test case, it takes Dream device at least 341 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 342 * triggering the layout and drawing the picture. While the same process 343 * takes 60+ms on the current high speed device. If we make 344 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 345 * to WebViewCore queue and the real layout and draw events will be pushed 346 * to further, which slows down the refresh rate. Choose 50 to favor the 347 * current high speed devices. For Dream like devices, 100 is a better 348 * choice. Maybe make this in the buildspec later. 349 */ 350 private static final int TOUCH_SENT_INTERVAL = 50; 351 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 352 353 /** 354 * Helper class to get velocity for fling 355 */ 356 VelocityTracker mVelocityTracker; 357 private int mMaximumFling; 358 private float mLastVelocity; 359 private float mLastVelX; 360 private float mLastVelY; 361 362 /** 363 * Touch mode 364 */ 365 private int mTouchMode = TOUCH_DONE_MODE; 366 private static final int TOUCH_INIT_MODE = 1; 367 private static final int TOUCH_DRAG_START_MODE = 2; 368 private static final int TOUCH_DRAG_MODE = 3; 369 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 370 private static final int TOUCH_SHORTPRESS_MODE = 5; 371 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 372 private static final int TOUCH_DONE_MODE = 7; 373 private static final int TOUCH_SELECT_MODE = 8; 374 private static final int TOUCH_PINCH_DRAG = 9; 375 376 // Whether to forward the touch events to WebCore 377 private boolean mForwardTouchEvents = false; 378 379 // Whether to prevent default during touch. The initial value depends on 380 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 381 // for touch down. Otherwise UI will wait for the answer of the first 382 // confirmed move before taking over the control. 383 private static final int PREVENT_DEFAULT_NO = 0; 384 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 385 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 386 private static final int PREVENT_DEFAULT_YES = 3; 387 private static final int PREVENT_DEFAULT_IGNORE = 4; 388 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 389 390 // true when the touch movement exceeds the slop 391 private boolean mConfirmMove; 392 393 // if true, touch events will be first processed by WebCore, if prevent 394 // default is not set, the UI will continue handle them. 395 private boolean mDeferTouchProcess; 396 397 // to avoid interfering with the current touch events, track them 398 // separately. Currently no snapping or fling in the deferred process mode 399 private int mDeferTouchMode = TOUCH_DONE_MODE; 400 private float mLastDeferTouchX; 401 private float mLastDeferTouchY; 402 403 // To keep track of whether the current drag was initiated by a WebTextView, 404 // so that we know not to hide the cursor 405 boolean mDragFromTextInput; 406 407 // Whether or not to draw the cursor ring. 408 private boolean mDrawCursorRing = true; 409 410 // true if onPause has been called (and not onResume) 411 private boolean mIsPaused; 412 413 // true if, during a transition to a new page, we're delaying 414 // deleting a root layer until there's something to draw of the new page. 415 private boolean mDelayedDeleteRootLayer; 416 417 /** 418 * Customizable constant 419 */ 420 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 421 private int mTouchSlopSquare; 422 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 423 private int mDoubleTapSlopSquare; 424 // pre-computed density adjusted navigation slop 425 private int mNavSlop; 426 // This should be ViewConfiguration.getTapTimeout() 427 // But system time out is 100ms, which is too short for the browser. 428 // In the browser, if it switches out of tap too soon, jump tap won't work. 429 private static final int TAP_TIMEOUT = 200; 430 // This should be ViewConfiguration.getLongPressTimeout() 431 // But system time out is 500ms, which is too short for the browser. 432 // With a short timeout, it's difficult to treat trigger a short press. 433 private static final int LONG_PRESS_TIMEOUT = 1000; 434 // needed to avoid flinging after a pause of no movement 435 private static final int MIN_FLING_TIME = 250; 436 // draw unfiltered after drag is held without movement 437 private static final int MOTIONLESS_TIME = 100; 438 // The time that the Zoom Controls are visible before fading away 439 private static final long ZOOM_CONTROLS_TIMEOUT = 440 ViewConfiguration.getZoomControlsTimeout(); 441 // The amount of content to overlap between two screens when going through 442 // pages with the space bar, in pixels. 443 private static final int PAGE_SCROLL_OVERLAP = 24; 444 445 /** 446 * These prevent calling requestLayout if either dimension is fixed. This 447 * depends on the layout parameters and the measure specs. 448 */ 449 boolean mWidthCanMeasure; 450 boolean mHeightCanMeasure; 451 452 // Remember the last dimensions we sent to the native side so we can avoid 453 // sending the same dimensions more than once. 454 int mLastWidthSent; 455 int mLastHeightSent; 456 457 private int mContentWidth; // cache of value from WebViewCore 458 private int mContentHeight; // cache of value from WebViewCore 459 460 // Need to have the separate control for horizontal and vertical scrollbar 461 // style than the View's single scrollbar style 462 private boolean mOverlayHorizontalScrollbar = true; 463 private boolean mOverlayVerticalScrollbar = false; 464 465 // our standard speed. this way small distances will be traversed in less 466 // time than large distances, but we cap the duration, so that very large 467 // distances won't take too long to get there. 468 private static final int STD_SPEED = 480; // pixels per second 469 // time for the longest scroll animation 470 private static final int MAX_DURATION = 750; // milliseconds 471 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 472 private Scroller mScroller; 473 474 private boolean mWrapContent; 475 private static final int MOTIONLESS_FALSE = 0; 476 private static final int MOTIONLESS_PENDING = 1; 477 private static final int MOTIONLESS_TRUE = 2; 478 private int mHeldMotionless; 479 480 // whether support multi-touch 481 private boolean mSupportMultiTouch; 482 // use the framework's ScaleGestureDetector to handle multi-touch 483 private ScaleGestureDetector mScaleDetector; 484 485 // the anchor point in the document space where VIEW_SIZE_CHANGED should 486 // apply to 487 private int mAnchorX; 488 private int mAnchorY; 489 490 /* 491 * Private message ids 492 */ 493 private static final int REMEMBER_PASSWORD = 1; 494 private static final int NEVER_REMEMBER_PASSWORD = 2; 495 private static final int SWITCH_TO_SHORTPRESS = 3; 496 private static final int SWITCH_TO_LONGPRESS = 4; 497 private static final int RELEASE_SINGLE_TAP = 5; 498 private static final int REQUEST_FORM_DATA = 6; 499 private static final int RESUME_WEBCORE_PRIORITY = 7; 500 private static final int DRAG_HELD_MOTIONLESS = 8; 501 private static final int AWAKEN_SCROLL_BARS = 9; 502 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 503 504 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 505 private static final int LAST_PRIVATE_MSG_ID = PREVENT_DEFAULT_TIMEOUT; 506 507 /* 508 * Package message ids 509 */ 510 //! arg1=x, arg2=y 511 static final int SCROLL_TO_MSG_ID = 101; 512 static final int SCROLL_BY_MSG_ID = 102; 513 //! arg1=x, arg2=y 514 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 515 //! arg1=x, arg2=y 516 static final int SYNC_SCROLL_TO_MSG_ID = 104; 517 static final int NEW_PICTURE_MSG_ID = 105; 518 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 519 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 520 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 521 static final int UPDATE_ZOOM_RANGE = 109; 522 static final int MOVE_OUT_OF_PLUGIN = 110; 523 static final int CLEAR_TEXT_ENTRY = 111; 524 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 525 static final int SHOW_RECT_MSG_ID = 113; 526 static final int LONG_PRESS_CENTER = 114; 527 static final int PREVENT_TOUCH_ID = 115; 528 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 529 // obj=Rect in doc coordinates 530 static final int INVAL_RECT_MSG_ID = 117; 531 static final int REQUEST_KEYBOARD = 118; 532 static final int DO_MOTION_UP = 119; 533 static final int SHOW_FULLSCREEN = 120; 534 static final int HIDE_FULLSCREEN = 121; 535 static final int DOM_FOCUS_CHANGED = 122; 536 static final int IMMEDIATE_REPAINT_MSG_ID = 123; 537 static final int SET_ROOT_LAYER_MSG_ID = 124; 538 static final int RETURN_LABEL = 125; 539 static final int FIND_AGAIN = 126; 540 static final int CENTER_FIT_RECT = 127; 541 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 542 543 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 544 private static final int LAST_PACKAGE_MSG_ID 545 = REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID; 546 547 static final String[] HandlerPrivateDebugString = { 548 "REMEMBER_PASSWORD", // = 1; 549 "NEVER_REMEMBER_PASSWORD", // = 2; 550 "SWITCH_TO_SHORTPRESS", // = 3; 551 "SWITCH_TO_LONGPRESS", // = 4; 552 "RELEASE_SINGLE_TAP", // = 5; 553 "REQUEST_FORM_DATA", // = 6; 554 "RESUME_WEBCORE_PRIORITY", // = 7; 555 "DRAG_HELD_MOTIONLESS", // = 8; 556 "AWAKEN_SCROLL_BARS", // = 9; 557 "PREVENT_DEFAULT_TIMEOUT" // = 10; 558 }; 559 560 static final String[] HandlerPackageDebugString = { 561 "SCROLL_TO_MSG_ID", // = 101; 562 "SCROLL_BY_MSG_ID", // = 102; 563 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 564 "SYNC_SCROLL_TO_MSG_ID", // = 104; 565 "NEW_PICTURE_MSG_ID", // = 105; 566 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 567 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 568 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 569 "UPDATE_ZOOM_RANGE", // = 109; 570 "MOVE_OUT_OF_PLUGIN", // = 110; 571 "CLEAR_TEXT_ENTRY", // = 111; 572 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 573 "SHOW_RECT_MSG_ID", // = 113; 574 "LONG_PRESS_CENTER", // = 114; 575 "PREVENT_TOUCH_ID", // = 115; 576 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 577 "INVAL_RECT_MSG_ID", // = 117; 578 "REQUEST_KEYBOARD", // = 118; 579 "DO_MOTION_UP", // = 119; 580 "SHOW_FULLSCREEN", // = 120; 581 "HIDE_FULLSCREEN", // = 121; 582 "DOM_FOCUS_CHANGED", // = 122; 583 "IMMEDIATE_REPAINT_MSG_ID", // = 123; 584 "SET_ROOT_LAYER_MSG_ID", // = 124; 585 "RETURN_LABEL", // = 125; 586 "FIND_AGAIN", // = 126; 587 "CENTER_FIT_RECT", // = 127; 588 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID" // = 128; 589 }; 590 591 // If the site doesn't use the viewport meta tag to specify the viewport, 592 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 593 static final int DEFAULT_VIEWPORT_WIDTH = 800; 594 595 // normally we try to fit the content to the minimum preferred width 596 // calculated by the Webkit. To avoid the bad behavior when some site's 597 // minimum preferred width keeps growing when changing the viewport width or 598 // the minimum preferred width is huge, an upper limit is needed. 599 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 600 601 // default scale limit. Depending on the display density 602 private static float DEFAULT_MAX_ZOOM_SCALE; 603 private static float DEFAULT_MIN_ZOOM_SCALE; 604 // scale limit, which can be set through viewport meta tag in the web page 605 private float mMaxZoomScale; 606 private float mMinZoomScale; 607 private boolean mMinZoomScaleFixed = true; 608 609 // initial scale in percent. 0 means using default. 610 private int mInitialScaleInPercent = 0; 611 612 // while in the zoom overview mode, the page's width is fully fit to the 613 // current window. The page is alive, in another words, you can click to 614 // follow the links. Double tap will toggle between zoom overview mode and 615 // the last zoom scale. 616 boolean mInZoomOverview = false; 617 618 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 619 // engadget always have wider mContentWidth no matter what viewport size is. 620 int mZoomOverviewWidth = DEFAULT_VIEWPORT_WIDTH; 621 float mTextWrapScale; 622 623 // default scale. Depending on the display density. 624 static int DEFAULT_SCALE_PERCENT; 625 private float mDefaultScale; 626 627 private static float MINIMUM_SCALE_INCREMENT = 0.01f; 628 629 // set to true temporarily during ScaleGesture triggered zoom 630 private boolean mPreviewZoomOnly = false; 631 632 // computed scale and inverse, from mZoomWidth. 633 private float mActualScale; 634 private float mInvActualScale; 635 // if this is non-zero, it is used on drawing rather than mActualScale 636 private float mZoomScale; 637 private float mInvInitialZoomScale; 638 private float mInvFinalZoomScale; 639 private int mInitialScrollX; 640 private int mInitialScrollY; 641 private long mZoomStart; 642 private static final int ZOOM_ANIMATION_LENGTH = 500; 643 644 private boolean mUserScroll = false; 645 646 private int mSnapScrollMode = SNAP_NONE; 647 private static final int SNAP_NONE = 0; 648 private static final int SNAP_LOCK = 1; // not a separate state 649 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 650 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 651 private boolean mSnapPositive; 652 653 // keep these in sync with their counterparts in WebView.cpp 654 private static final int DRAW_EXTRAS_NONE = 0; 655 private static final int DRAW_EXTRAS_FIND = 1; 656 private static final int DRAW_EXTRAS_SELECTION = 2; 657 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 658 659 // Used to match key downs and key ups 660 private boolean mGotKeyDown; 661 662 /* package */ static boolean mLogEvent = true; 663 664 // for event log 665 private long mLastTouchUpTime = 0; 666 667 /** 668 * URI scheme for telephone number 669 */ 670 public static final String SCHEME_TEL = "tel:"; 671 /** 672 * URI scheme for email address 673 */ 674 public static final String SCHEME_MAILTO = "mailto:"; 675 /** 676 * URI scheme for map address 677 */ 678 public static final String SCHEME_GEO = "geo:0,0?q="; 679 680 private int mBackgroundColor = Color.WHITE; 681 682 // Used to notify listeners of a new picture. 683 private PictureListener mPictureListener; 684 /** 685 * Interface to listen for new pictures as they change. 686 */ 687 public interface PictureListener { 688 /** 689 * Notify the listener that the picture has changed. 690 * @param view The WebView that owns the picture. 691 * @param picture The new picture. 692 */ 693 public void onNewPicture(WebView view, Picture picture); 694 } 695 696 // FIXME: Want to make this public, but need to change the API file. 697 public /*static*/ class HitTestResult { 698 /** 699 * Default HitTestResult, where the target is unknown 700 */ 701 public static final int UNKNOWN_TYPE = 0; 702 /** 703 * HitTestResult for hitting a HTML::a tag 704 */ 705 public static final int ANCHOR_TYPE = 1; 706 /** 707 * HitTestResult for hitting a phone number 708 */ 709 public static final int PHONE_TYPE = 2; 710 /** 711 * HitTestResult for hitting a map address 712 */ 713 public static final int GEO_TYPE = 3; 714 /** 715 * HitTestResult for hitting an email address 716 */ 717 public static final int EMAIL_TYPE = 4; 718 /** 719 * HitTestResult for hitting an HTML::img tag 720 */ 721 public static final int IMAGE_TYPE = 5; 722 /** 723 * HitTestResult for hitting a HTML::a tag which contains HTML::img 724 */ 725 public static final int IMAGE_ANCHOR_TYPE = 6; 726 /** 727 * HitTestResult for hitting a HTML::a tag with src=http 728 */ 729 public static final int SRC_ANCHOR_TYPE = 7; 730 /** 731 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 732 */ 733 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 734 /** 735 * HitTestResult for hitting an edit text area 736 */ 737 public static final int EDIT_TEXT_TYPE = 9; 738 739 private int mType; 740 private String mExtra; 741 742 HitTestResult() { 743 mType = UNKNOWN_TYPE; 744 } 745 746 private void setType(int type) { 747 mType = type; 748 } 749 750 private void setExtra(String extra) { 751 mExtra = extra; 752 } 753 754 public int getType() { 755 return mType; 756 } 757 758 public String getExtra() { 759 return mExtra; 760 } 761 } 762 763 // The View containing the zoom controls 764 private ExtendedZoomControls mZoomControls; 765 private Runnable mZoomControlRunnable; 766 767 // mZoomButtonsController will be lazy initialized in 768 // getZoomButtonsController() to get better performance. 769 private ZoomButtonsController mZoomButtonsController; 770 771 // These keep track of the center point of the zoom. They are used to 772 // determine the point around which we should zoom. 773 private float mZoomCenterX; 774 private float mZoomCenterY; 775 776 private ZoomButtonsController.OnZoomListener mZoomListener = 777 new ZoomButtonsController.OnZoomListener() { 778 779 public void onVisibilityChanged(boolean visible) { 780 if (visible) { 781 switchOutDrawHistory(); 782 // Bring back the hidden zoom controls. 783 mZoomButtonsController.getZoomControls().setVisibility( 784 View.VISIBLE); 785 updateZoomButtonsEnabled(); 786 } 787 } 788 789 public void onZoom(boolean zoomIn) { 790 if (zoomIn) { 791 zoomIn(); 792 } else { 793 zoomOut(); 794 } 795 796 updateZoomButtonsEnabled(); 797 } 798 }; 799 800 /** 801 * Construct a new WebView with a Context object. 802 * @param context A Context object used to access application assets. 803 */ 804 public WebView(Context context) { 805 this(context, null); 806 } 807 808 /** 809 * Construct a new WebView with layout parameters. 810 * @param context A Context object used to access application assets. 811 * @param attrs An AttributeSet passed to our parent. 812 */ 813 public WebView(Context context, AttributeSet attrs) { 814 this(context, attrs, com.android.internal.R.attr.webViewStyle); 815 } 816 817 /** 818 * Construct a new WebView with layout parameters and a default style. 819 * @param context A Context object used to access application assets. 820 * @param attrs An AttributeSet passed to our parent. 821 * @param defStyle The default style resource ID. 822 */ 823 public WebView(Context context, AttributeSet attrs, int defStyle) { 824 this(context, attrs, defStyle, null); 825 } 826 827 /** 828 * Construct a new WebView with layout parameters, a default style and a set 829 * of custom Javscript interfaces to be added to the WebView at initialization 830 * time. This guarantees that these interfaces will be available when the JS 831 * context is initialized. 832 * @param context A Context object used to access application assets. 833 * @param attrs An AttributeSet passed to our parent. 834 * @param defStyle The default style resource ID. 835 * @param javascriptInterfaces is a Map of intareface names, as keys, and 836 * object implementing those interfaces, as values. 837 * @hide pending API council approval. 838 */ 839 protected WebView(Context context, AttributeSet attrs, int defStyle, 840 Map<String, Object> javascriptInterfaces) { 841 super(context, attrs, defStyle); 842 init(); 843 844 mCallbackProxy = new CallbackProxy(context, this); 845 mViewManager = new ViewManager(this); 846 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 847 mDatabase = WebViewDatabase.getInstance(context); 848 mScroller = new Scroller(context); 849 850 updateMultiTouchSupport(context); 851 } 852 853 void updateMultiTouchSupport(Context context) { 854 WebSettings settings = getSettings(); 855 mSupportMultiTouch = context.getPackageManager().hasSystemFeature( 856 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 857 && settings.supportZoom() && settings.getBuiltInZoomControls(); 858 if (mSupportMultiTouch && (mScaleDetector == null)) { 859 mScaleDetector = new ScaleGestureDetector(context, 860 new ScaleDetectorListener()); 861 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 862 mScaleDetector = null; 863 } 864 } 865 866 private void updateZoomButtonsEnabled() { 867 boolean canZoomIn = mActualScale < mMaxZoomScale; 868 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 869 ZoomButtonsController controller = getZoomButtonsController(); 870 if (!canZoomIn && !canZoomOut) { 871 // Hide the zoom in and out buttons, as well as the fit to page 872 // button, if the page cannot zoom 873 controller.getZoomControls().setVisibility(View.GONE); 874 } else { 875 // Set each one individually, as a page may be able to zoom in 876 // or out. 877 controller.setZoomInEnabled(canZoomIn); 878 controller.setZoomOutEnabled(canZoomOut); 879 } 880 } 881 882 private void init() { 883 setWillNotDraw(false); 884 setFocusable(true); 885 setFocusableInTouchMode(true); 886 setClickable(true); 887 setLongClickable(true); 888 889 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 890 int slop = configuration.getScaledTouchSlop(); 891 mTouchSlopSquare = slop * slop; 892 mMinLockSnapReverseDistance = slop; 893 slop = configuration.getScaledDoubleTapSlop(); 894 mDoubleTapSlopSquare = slop * slop; 895 final float density = getContext().getResources().getDisplayMetrics().density; 896 // use one line height, 16 based on our current default font, for how 897 // far we allow a touch be away from the edge of a link 898 mNavSlop = (int) (16 * density); 899 // density adjusted scale factors 900 DEFAULT_SCALE_PERCENT = (int) (100 * density); 901 mDefaultScale = density; 902 mActualScale = density; 903 mInvActualScale = 1 / density; 904 mTextWrapScale = density; 905 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 906 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 907 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 908 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 909 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 910 } 911 912 /* package */void updateDefaultZoomDensity(int zoomDensity) { 913 final float density = getContext().getResources().getDisplayMetrics().density 914 * 100 / zoomDensity; 915 if (Math.abs(density - mDefaultScale) > 0.01) { 916 float scaleFactor = density / mDefaultScale; 917 // adjust the limits 918 mNavSlop = (int) (16 * density); 919 DEFAULT_SCALE_PERCENT = (int) (100 * density); 920 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 921 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 922 mDefaultScale = density; 923 mMaxZoomScale *= scaleFactor; 924 mMinZoomScale *= scaleFactor; 925 setNewZoomScale(mActualScale * scaleFactor, true, false); 926 } 927 } 928 929 /* package */ boolean onSavePassword(String schemePlusHost, String username, 930 String password, final Message resumeMsg) { 931 boolean rVal = false; 932 if (resumeMsg == null) { 933 // null resumeMsg implies saving password silently 934 mDatabase.setUsernamePassword(schemePlusHost, username, password); 935 } else { 936 final Message remember = mPrivateHandler.obtainMessage( 937 REMEMBER_PASSWORD); 938 remember.getData().putString("host", schemePlusHost); 939 remember.getData().putString("username", username); 940 remember.getData().putString("password", password); 941 remember.obj = resumeMsg; 942 943 final Message neverRemember = mPrivateHandler.obtainMessage( 944 NEVER_REMEMBER_PASSWORD); 945 neverRemember.getData().putString("host", schemePlusHost); 946 neverRemember.getData().putString("username", username); 947 neverRemember.getData().putString("password", password); 948 neverRemember.obj = resumeMsg; 949 950 new AlertDialog.Builder(getContext()) 951 .setTitle(com.android.internal.R.string.save_password_label) 952 .setMessage(com.android.internal.R.string.save_password_message) 953 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 954 new DialogInterface.OnClickListener() { 955 public void onClick(DialogInterface dialog, int which) { 956 resumeMsg.sendToTarget(); 957 } 958 }) 959 .setNeutralButton(com.android.internal.R.string.save_password_remember, 960 new DialogInterface.OnClickListener() { 961 public void onClick(DialogInterface dialog, int which) { 962 remember.sendToTarget(); 963 } 964 }) 965 .setNegativeButton(com.android.internal.R.string.save_password_never, 966 new DialogInterface.OnClickListener() { 967 public void onClick(DialogInterface dialog, int which) { 968 neverRemember.sendToTarget(); 969 } 970 }) 971 .setOnCancelListener(new OnCancelListener() { 972 public void onCancel(DialogInterface dialog) { 973 resumeMsg.sendToTarget(); 974 } 975 }).show(); 976 // Return true so that WebViewCore will pause while the dialog is 977 // up. 978 rVal = true; 979 } 980 return rVal; 981 } 982 983 @Override 984 public void setScrollBarStyle(int style) { 985 if (style == View.SCROLLBARS_INSIDE_INSET 986 || style == View.SCROLLBARS_OUTSIDE_INSET) { 987 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 988 } else { 989 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 990 } 991 super.setScrollBarStyle(style); 992 } 993 994 /** 995 * Specify whether the horizontal scrollbar has overlay style. 996 * @param overlay TRUE if horizontal scrollbar should have overlay style. 997 */ 998 public void setHorizontalScrollbarOverlay(boolean overlay) { 999 mOverlayHorizontalScrollbar = overlay; 1000 } 1001 1002 /** 1003 * Specify whether the vertical scrollbar has overlay style. 1004 * @param overlay TRUE if vertical scrollbar should have overlay style. 1005 */ 1006 public void setVerticalScrollbarOverlay(boolean overlay) { 1007 mOverlayVerticalScrollbar = overlay; 1008 } 1009 1010 /** 1011 * Return whether horizontal scrollbar has overlay style 1012 * @return TRUE if horizontal scrollbar has overlay style. 1013 */ 1014 public boolean overlayHorizontalScrollbar() { 1015 return mOverlayHorizontalScrollbar; 1016 } 1017 1018 /** 1019 * Return whether vertical scrollbar has overlay style 1020 * @return TRUE if vertical scrollbar has overlay style. 1021 */ 1022 public boolean overlayVerticalScrollbar() { 1023 return mOverlayVerticalScrollbar; 1024 } 1025 1026 /* 1027 * Return the width of the view where the content of WebView should render 1028 * to. 1029 * Note: this can be called from WebCoreThread. 1030 */ 1031 /* package */ int getViewWidth() { 1032 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1033 return getWidth(); 1034 } else { 1035 return getWidth() - getVerticalScrollbarWidth(); 1036 } 1037 } 1038 1039 /* 1040 * returns the height of the titlebarview (if any). Does not care about 1041 * scrolling 1042 */ 1043 private int getTitleHeight() { 1044 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1045 } 1046 1047 /* 1048 * Return the amount of the titlebarview (if any) that is visible 1049 */ 1050 private int getVisibleTitleHeight() { 1051 return Math.max(getTitleHeight() - mScrollY, 0); 1052 } 1053 1054 /* 1055 * Return the height of the view where the content of WebView should render 1056 * to. Note that this excludes mTitleBar, if there is one. 1057 * Note: this can be called from WebCoreThread. 1058 */ 1059 /* package */ int getViewHeight() { 1060 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1061 } 1062 1063 private int getViewHeightWithTitle() { 1064 int height = getHeight(); 1065 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1066 height -= getHorizontalScrollbarHeight(); 1067 } 1068 return height; 1069 } 1070 1071 /** 1072 * @return The SSL certificate for the main top-level page or null if 1073 * there is no certificate (the site is not secure). 1074 */ 1075 public SslCertificate getCertificate() { 1076 return mCertificate; 1077 } 1078 1079 /** 1080 * Sets the SSL certificate for the main top-level page. 1081 */ 1082 public void setCertificate(SslCertificate certificate) { 1083 if (DebugFlags.WEB_VIEW) { 1084 Log.v(LOGTAG, "setCertificate=" + certificate); 1085 } 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. The date must 1466 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1467 * %27, %3f respectively. 1468 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1469 * @param encoding The encoding of the data. i.e. utf-8, base64 1470 */ 1471 public void loadData(String data, String mimeType, String encoding) { 1472 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1473 } 1474 1475 /** 1476 * Load the given data into the WebView, use the provided URL as the base 1477 * URL for the content. The base URL is the URL that represents the page 1478 * that is loaded through this interface. As such, it is used to resolve any 1479 * relative URLs. The historyUrl is used for the history entry. 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 historyUrl URL to use as the history entry. Can be null. 1495 */ 1496 public void loadDataWithBaseURL(String baseUrl, String data, 1497 String mimeType, String encoding, String historyUrl) { 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.mHistoryUrl = historyUrl; 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 if (steps != 0) { 1608 clearTextEntry(false); 1609 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1610 ignoreSnapshot ? 1 : 0); 1611 } 1612 } 1613 1614 private boolean extendScroll(int y) { 1615 int finalY = mScroller.getFinalY(); 1616 int newY = pinLocY(finalY + y); 1617 if (newY == finalY) return false; 1618 mScroller.setFinalY(newY); 1619 mScroller.extendDuration(computeDuration(0, y)); 1620 return true; 1621 } 1622 1623 /** 1624 * Scroll the contents of the view up by half the view size 1625 * @param top true to jump to the top of the page 1626 * @return true if the page was scrolled 1627 */ 1628 public boolean pageUp(boolean top) { 1629 if (mNativeClass == 0) { 1630 return false; 1631 } 1632 nativeClearCursor(); // start next trackball movement from page edge 1633 if (top) { 1634 // go to the top of the document 1635 return pinScrollTo(mScrollX, 0, true, 0); 1636 } 1637 // Page up 1638 int h = getHeight(); 1639 int y; 1640 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1641 y = -h + PAGE_SCROLL_OVERLAP; 1642 } else { 1643 y = -h / 2; 1644 } 1645 mUserScroll = true; 1646 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1647 : extendScroll(y); 1648 } 1649 1650 /** 1651 * Scroll the contents of the view down by half the page size 1652 * @param bottom true to jump to bottom of page 1653 * @return true if the page was scrolled 1654 */ 1655 public boolean pageDown(boolean bottom) { 1656 if (mNativeClass == 0) { 1657 return false; 1658 } 1659 nativeClearCursor(); // start next trackball movement from page edge 1660 if (bottom) { 1661 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1662 } 1663 // Page down. 1664 int h = getHeight(); 1665 int y; 1666 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1667 y = h - PAGE_SCROLL_OVERLAP; 1668 } else { 1669 y = h / 2; 1670 } 1671 mUserScroll = true; 1672 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1673 : extendScroll(y); 1674 } 1675 1676 /** 1677 * Clear the view so that onDraw() will draw nothing but white background, 1678 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1679 */ 1680 public void clearView() { 1681 mContentWidth = 0; 1682 mContentHeight = 0; 1683 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1684 } 1685 1686 /** 1687 * Return a new picture that captures the current display of the webview. 1688 * This is a copy of the display, and will be unaffected if the webview 1689 * later loads a different URL. 1690 * 1691 * @return a picture containing the current contents of the view. Note this 1692 * picture is of the entire document, and is not restricted to the 1693 * bounds of the view. 1694 */ 1695 public Picture capturePicture() { 1696 if (null == mWebViewCore) return null; // check for out of memory tab 1697 return mWebViewCore.copyContentPicture(); 1698 } 1699 1700 /** 1701 * Return true if the browser is displaying a TextView for text input. 1702 */ 1703 private boolean inEditingMode() { 1704 return mWebTextView != null && mWebTextView.getParent() != null 1705 && mWebTextView.hasFocus(); 1706 } 1707 1708 /** 1709 * Remove the WebTextView. 1710 * @param disableFocusController If true, send a message to webkit 1711 * disabling the focus controller, so the caret stops blinking. 1712 */ 1713 private void clearTextEntry(boolean disableFocusController) { 1714 if (inEditingMode()) { 1715 mWebTextView.remove(); 1716 if (disableFocusController) { 1717 setFocusControllerInactive(); 1718 } 1719 } 1720 } 1721 1722 /** 1723 * Return the current scale of the WebView 1724 * @return The current scale. 1725 */ 1726 public float getScale() { 1727 return mActualScale; 1728 } 1729 1730 /** 1731 * Set the initial scale for the WebView. 0 means default. If 1732 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1733 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1734 * WebView starts will this value as initial scale. 1735 * 1736 * @param scaleInPercent The initial scale in percent. 1737 */ 1738 public void setInitialScale(int scaleInPercent) { 1739 mInitialScaleInPercent = scaleInPercent; 1740 } 1741 1742 /** 1743 * Invoke the graphical zoom picker widget for this WebView. This will 1744 * result in the zoom widget appearing on the screen to control the zoom 1745 * level of this WebView. 1746 */ 1747 public void invokeZoomPicker() { 1748 if (!getSettings().supportZoom()) { 1749 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1750 return; 1751 } 1752 clearTextEntry(false); 1753 if (getSettings().getBuiltInZoomControls()) { 1754 getZoomButtonsController().setVisible(true); 1755 } else { 1756 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1757 mPrivateHandler.postDelayed(mZoomControlRunnable, 1758 ZOOM_CONTROLS_TIMEOUT); 1759 } 1760 } 1761 1762 /** 1763 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1764 * is found and the anchor has a non-javascript url, the HitTestResult type 1765 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1766 * anchor does not have a url or if it is a javascript url, the type will 1767 * be UNKNOWN_TYPE and the url has to be retrieved through 1768 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1769 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1770 * the "extra" field. A type of 1771 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1772 * a child node. If a phone number is found, the HitTestResult type is set 1773 * to PHONE_TYPE and the phone number is set in the "extra" field of 1774 * HitTestResult. If a map address is found, the HitTestResult type is set 1775 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1776 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1777 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1778 * HitTestResult type is set to UNKNOWN_TYPE. 1779 */ 1780 public HitTestResult getHitTestResult() { 1781 if (mNativeClass == 0) { 1782 return null; 1783 } 1784 1785 HitTestResult result = new HitTestResult(); 1786 if (nativeHasCursorNode()) { 1787 if (nativeCursorIsTextInput()) { 1788 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1789 } else { 1790 String text = nativeCursorText(); 1791 if (text != null) { 1792 if (text.startsWith(SCHEME_TEL)) { 1793 result.setType(HitTestResult.PHONE_TYPE); 1794 result.setExtra(text.substring(SCHEME_TEL.length())); 1795 } else if (text.startsWith(SCHEME_MAILTO)) { 1796 result.setType(HitTestResult.EMAIL_TYPE); 1797 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1798 } else if (text.startsWith(SCHEME_GEO)) { 1799 result.setType(HitTestResult.GEO_TYPE); 1800 result.setExtra(URLDecoder.decode(text 1801 .substring(SCHEME_GEO.length()))); 1802 } else if (nativeCursorIsAnchor()) { 1803 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1804 result.setExtra(text); 1805 } 1806 } 1807 } 1808 } 1809 int type = result.getType(); 1810 if (type == HitTestResult.UNKNOWN_TYPE 1811 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1812 // Now check to see if it is an image. 1813 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1814 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1815 String text = nativeImageURI(contentX, contentY); 1816 if (text != null) { 1817 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1818 HitTestResult.IMAGE_TYPE : 1819 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1820 result.setExtra(text); 1821 } 1822 } 1823 return result; 1824 } 1825 1826 // Called by JNI when the DOM has changed the focus. Clear the focus so 1827 // that new keys will go to the newly focused field 1828 private void domChangedFocus() { 1829 if (inEditingMode()) { 1830 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 1831 } 1832 } 1833 /** 1834 * Request the href of an anchor element due to getFocusNodePath returning 1835 * "href." If hrefMsg is null, this method returns immediately and does not 1836 * dispatch hrefMsg to its target. 1837 * 1838 * @param hrefMsg This message will be dispatched with the result of the 1839 * request as the data member with "url" as key. The result can 1840 * be null. 1841 */ 1842 // FIXME: API change required to change the name of this function. We now 1843 // look at the cursor node, and not the focus node. Also, what is 1844 // getFocusNodePath? 1845 public void requestFocusNodeHref(Message hrefMsg) { 1846 if (hrefMsg == null || mNativeClass == 0) { 1847 return; 1848 } 1849 if (nativeCursorIsAnchor()) { 1850 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1851 nativeCursorFramePointer(), nativeCursorNodePointer(), 1852 hrefMsg); 1853 } 1854 } 1855 1856 /** 1857 * Request the url of the image last touched by the user. msg will be sent 1858 * to its target with a String representing the url as its object. 1859 * 1860 * @param msg This message will be dispatched with the result of the request 1861 * as the data member with "url" as key. The result can be null. 1862 */ 1863 public void requestImageRef(Message msg) { 1864 if (0 == mNativeClass) return; // client isn't initialized 1865 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1866 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1867 String ref = nativeImageURI(contentX, contentY); 1868 Bundle data = msg.getData(); 1869 data.putString("url", ref); 1870 msg.setData(data); 1871 msg.sendToTarget(); 1872 } 1873 1874 private static int pinLoc(int x, int viewMax, int docMax) { 1875// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1876 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1877 // pin the short document to the top/left of the screen 1878 x = 0; 1879// Log.d(LOGTAG, "--- center " + x); 1880 } else if (x < 0) { 1881 x = 0; 1882// Log.d(LOGTAG, "--- zero"); 1883 } else if (x + viewMax > docMax) { 1884 x = docMax - viewMax; 1885// Log.d(LOGTAG, "--- pin " + x); 1886 } 1887 return x; 1888 } 1889 1890 // Expects x in view coordinates 1891 private int pinLocX(int x) { 1892 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1893 } 1894 1895 // Expects y in view coordinates 1896 private int pinLocY(int y) { 1897 return pinLoc(y, getViewHeightWithTitle(), 1898 computeVerticalScrollRange() + getTitleHeight()); 1899 } 1900 1901 /** 1902 * A title bar which is embedded in this WebView, and scrolls along with it 1903 * vertically, but not horizontally. 1904 */ 1905 private View mTitleBar; 1906 1907 /** 1908 * Since we draw the title bar ourselves, we removed the shadow from the 1909 * browser's activity. We do want a shadow at the bottom of the title bar, 1910 * or at the top of the screen if the title bar is not visible. This 1911 * drawable serves that purpose. 1912 */ 1913 private Drawable mTitleShadow; 1914 1915 /** 1916 * Add or remove a title bar to be embedded into the WebView, and scroll 1917 * along with it vertically, while remaining in view horizontally. Pass 1918 * null to remove the title bar from the WebView, and return to drawing 1919 * the WebView normally without translating to account for the title bar. 1920 * @hide 1921 */ 1922 public void setEmbeddedTitleBar(View v) { 1923 if (mTitleBar == v) return; 1924 if (mTitleBar != null) { 1925 removeView(mTitleBar); 1926 } 1927 if (null != v) { 1928 addView(v, new AbsoluteLayout.LayoutParams( 1929 ViewGroup.LayoutParams.MATCH_PARENT, 1930 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1931 if (mTitleShadow == null) { 1932 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1933 com.android.internal.R.drawable.title_bar_shadow); 1934 } 1935 } 1936 mTitleBar = v; 1937 } 1938 1939 /** 1940 * Given a distance in view space, convert it to content space. Note: this 1941 * does not reflect translation, just scaling, so this should not be called 1942 * with coordinates, but should be called for dimensions like width or 1943 * height. 1944 */ 1945 private int viewToContentDimension(int d) { 1946 return Math.round(d * mInvActualScale); 1947 } 1948 1949 /** 1950 * Given an x coordinate in view space, convert it to content space. Also 1951 * may be used for absolute heights (such as for the WebTextView's 1952 * textSize, which is unaffected by the height of the title bar). 1953 */ 1954 /*package*/ int viewToContentX(int x) { 1955 return viewToContentDimension(x); 1956 } 1957 1958 /** 1959 * Given a y coordinate in view space, convert it to content space. 1960 * Takes into account the height of the title bar if there is one 1961 * embedded into the WebView. 1962 */ 1963 /*package*/ int viewToContentY(int y) { 1964 return viewToContentDimension(y - getTitleHeight()); 1965 } 1966 1967 /** 1968 * Given a distance in content space, convert it to view space. Note: this 1969 * does not reflect translation, just scaling, so this should not be called 1970 * with coordinates, but should be called for dimensions like width or 1971 * height. 1972 */ 1973 /*package*/ int contentToViewDimension(int d) { 1974 return Math.round(d * mActualScale); 1975 } 1976 1977 /** 1978 * Given an x coordinate in content space, convert it to view 1979 * space. 1980 */ 1981 /*package*/ int contentToViewX(int x) { 1982 return contentToViewDimension(x); 1983 } 1984 1985 /** 1986 * Given a y coordinate in content space, convert it to view 1987 * space. Takes into account the height of the title bar. 1988 */ 1989 /*package*/ int contentToViewY(int y) { 1990 return contentToViewDimension(y) + getTitleHeight(); 1991 } 1992 1993 private Rect contentToViewRect(Rect x) { 1994 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 1995 contentToViewX(x.right), contentToViewY(x.bottom)); 1996 } 1997 1998 /* To invalidate a rectangle in content coordinates, we need to transform 1999 the rect into view coordinates, so we can then call invalidate(...). 2000 2001 Normally, we would just call contentToView[XY](...), which eventually 2002 calls Math.round(coordinate * mActualScale). However, for invalidates, 2003 we need to account for the slop that occurs with antialiasing. To 2004 address that, we are a little more liberal in the size of the rect that 2005 we invalidate. 2006 2007 This liberal calculation calls floor() for the top/left, and ceil() for 2008 the bottom/right coordinates. This catches the possible extra pixels of 2009 antialiasing that we might have missed with just round(). 2010 */ 2011 2012 // Called by JNI to invalidate the View, given rectangle coordinates in 2013 // content space 2014 private void viewInvalidate(int l, int t, int r, int b) { 2015 final float scale = mActualScale; 2016 final int dy = getTitleHeight(); 2017 invalidate((int)Math.floor(l * scale), 2018 (int)Math.floor(t * scale) + dy, 2019 (int)Math.ceil(r * scale), 2020 (int)Math.ceil(b * scale) + dy); 2021 } 2022 2023 // Called by JNI to invalidate the View after a delay, given rectangle 2024 // coordinates in content space 2025 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2026 final float scale = mActualScale; 2027 final int dy = getTitleHeight(); 2028 postInvalidateDelayed(delay, 2029 (int)Math.floor(l * scale), 2030 (int)Math.floor(t * scale) + dy, 2031 (int)Math.ceil(r * scale), 2032 (int)Math.ceil(b * scale) + dy); 2033 } 2034 2035 private void invalidateContentRect(Rect r) { 2036 viewInvalidate(r.left, r.top, r.right, r.bottom); 2037 } 2038 2039 // stop the scroll animation, and don't let a subsequent fling add 2040 // to the existing velocity 2041 private void abortAnimation() { 2042 mScroller.abortAnimation(); 2043 mLastVelocity = 0; 2044 } 2045 2046 /* call from webcoreview.draw(), so we're still executing in the UI thread 2047 */ 2048 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2049 2050 // premature data from webkit, ignore 2051 if ((w | h) == 0) { 2052 return; 2053 } 2054 2055 // don't abort a scroll animation if we didn't change anything 2056 if (mContentWidth != w || mContentHeight != h) { 2057 // record new dimensions 2058 mContentWidth = w; 2059 mContentHeight = h; 2060 // If history Picture is drawn, don't update scroll. They will be 2061 // updated when we get out of that mode. 2062 if (!mDrawHistory) { 2063 // repin our scroll, taking into account the new content size 2064 int oldX = mScrollX; 2065 int oldY = mScrollY; 2066 mScrollX = pinLocX(mScrollX); 2067 mScrollY = pinLocY(mScrollY); 2068 if (oldX != mScrollX || oldY != mScrollY) { 2069 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2070 } 2071 if (!mScroller.isFinished()) { 2072 // We are in the middle of a scroll. Repin the final scroll 2073 // position. 2074 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2075 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2076 } 2077 } 2078 } 2079 contentSizeChanged(updateLayout); 2080 } 2081 2082 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 2083 boolean force) { 2084 if (scale < mMinZoomScale) { 2085 scale = mMinZoomScale; 2086 // set mInZoomOverview for non mobile sites 2087 if (scale < mDefaultScale) mInZoomOverview = true; 2088 } else if (scale > mMaxZoomScale) { 2089 scale = mMaxZoomScale; 2090 } 2091 if (updateTextWrapScale) { 2092 mTextWrapScale = scale; 2093 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 2094 mLastHeightSent = 0; 2095 } 2096 if (scale != mActualScale || force) { 2097 if (mDrawHistory) { 2098 // If history Picture is drawn, don't update scroll. They will 2099 // be updated when we get out of that mode. 2100 if (scale != mActualScale && !mPreviewZoomOnly) { 2101 mCallbackProxy.onScaleChanged(mActualScale, scale); 2102 } 2103 mActualScale = scale; 2104 mInvActualScale = 1 / scale; 2105 sendViewSizeZoom(); 2106 } else { 2107 // update our scroll so we don't appear to jump 2108 // i.e. keep the center of the doc in the center of the view 2109 2110 int oldX = mScrollX; 2111 int oldY = mScrollY; 2112 float ratio = scale * mInvActualScale; // old inverse 2113 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2114 float sy = ratio * oldY + (ratio - 1) 2115 * (mZoomCenterY - getTitleHeight()); 2116 2117 // now update our new scale and inverse 2118 if (scale != mActualScale && !mPreviewZoomOnly) { 2119 mCallbackProxy.onScaleChanged(mActualScale, scale); 2120 } 2121 mActualScale = scale; 2122 mInvActualScale = 1 / scale; 2123 2124 // Scale all the child views 2125 mViewManager.scaleAll(); 2126 2127 // as we don't have animation for scaling, don't do animation 2128 // for scrolling, as it causes weird intermediate state 2129 // pinScrollTo(Math.round(sx), Math.round(sy)); 2130 mScrollX = pinLocX(Math.round(sx)); 2131 mScrollY = pinLocY(Math.round(sy)); 2132 2133 if (oldX != mScrollX || oldY != mScrollY) { 2134 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2135 } 2136 2137 // update webkit 2138 sendViewSizeZoom(); 2139 } 2140 } 2141 } 2142 2143 // Used to avoid sending many visible rect messages. 2144 private Rect mLastVisibleRectSent; 2145 private Rect mLastGlobalRect; 2146 2147 private Rect sendOurVisibleRect() { 2148 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2149 2150 Rect rect = new Rect(); 2151 calcOurContentVisibleRect(rect); 2152 // Rect.equals() checks for null input. 2153 if (!rect.equals(mLastVisibleRectSent)) { 2154 Point pos = new Point(rect.left, rect.top); 2155 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2156 nativeMoveGeneration(), 0, pos); 2157 mLastVisibleRectSent = rect; 2158 } 2159 Rect globalRect = new Rect(); 2160 if (getGlobalVisibleRect(globalRect) 2161 && !globalRect.equals(mLastGlobalRect)) { 2162 if (DebugFlags.WEB_VIEW) { 2163 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2164 + globalRect.top + ",r=" + globalRect.right + ",b=" 2165 + globalRect.bottom); 2166 } 2167 // TODO: the global offset is only used by windowRect() 2168 // in ChromeClientAndroid ; other clients such as touch 2169 // and mouse events could return view + screen relative points. 2170 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2171 mLastGlobalRect = globalRect; 2172 } 2173 return rect; 2174 } 2175 2176 // Sets r to be the visible rectangle of our webview in view coordinates 2177 private void calcOurVisibleRect(Rect r) { 2178 Point p = new Point(); 2179 getGlobalVisibleRect(r, p); 2180 r.offset(-p.x, -p.y); 2181 if (mFindIsUp) { 2182 r.bottom -= mFindHeight; 2183 } 2184 } 2185 2186 // Sets r to be our visible rectangle in content coordinates 2187 private void calcOurContentVisibleRect(Rect r) { 2188 calcOurVisibleRect(r); 2189 // pin the rect to the bounds of the content 2190 r.left = Math.max(viewToContentX(r.left), 0); 2191 // viewToContentY will remove the total height of the title bar. Add 2192 // the visible height back in to account for the fact that if the title 2193 // bar is partially visible, the part of the visible rect which is 2194 // displaying our content is displaced by that amount. 2195 r.top = Math.max(viewToContentY(r.top + getVisibleTitleHeight()), 0); 2196 r.right = Math.min(viewToContentX(r.right), mContentWidth); 2197 r.bottom = Math.min(viewToContentY(r.bottom), mContentHeight); 2198 } 2199 2200 static class ViewSizeData { 2201 int mWidth; 2202 int mHeight; 2203 int mTextWrapWidth; 2204 int mAnchorX; 2205 int mAnchorY; 2206 float mScale; 2207 boolean mIgnoreHeight; 2208 } 2209 2210 /** 2211 * Compute unzoomed width and height, and if they differ from the last 2212 * values we sent, send them to webkit (to be used has new viewport) 2213 * 2214 * @return true if new values were sent 2215 */ 2216 private boolean sendViewSizeZoom() { 2217 if (mPreviewZoomOnly) return false; 2218 2219 int viewWidth = getViewWidth(); 2220 int newWidth = Math.round(viewWidth * mInvActualScale); 2221 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2222 /* 2223 * Because the native side may have already done a layout before the 2224 * View system was able to measure us, we have to send a height of 0 to 2225 * remove excess whitespace when we grow our width. This will trigger a 2226 * layout and a change in content size. This content size change will 2227 * mean that contentSizeChanged will either call this method directly or 2228 * indirectly from onSizeChanged. 2229 */ 2230 if (newWidth > mLastWidthSent && mWrapContent) { 2231 newHeight = 0; 2232 } 2233 // Avoid sending another message if the dimensions have not changed. 2234 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2235 ViewSizeData data = new ViewSizeData(); 2236 data.mWidth = newWidth; 2237 data.mHeight = newHeight; 2238 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2239 data.mScale = mActualScale; 2240 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2241 data.mAnchorX = mAnchorX; 2242 data.mAnchorY = mAnchorY; 2243 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2244 mLastWidthSent = newWidth; 2245 mLastHeightSent = newHeight; 2246 mAnchorX = mAnchorY = 0; 2247 return true; 2248 } 2249 return false; 2250 } 2251 2252 @Override 2253 protected int computeHorizontalScrollRange() { 2254 if (mDrawHistory) { 2255 return mHistoryWidth; 2256 } else { 2257 // to avoid rounding error caused unnecessary scrollbar, use floor 2258 return (int) Math.floor(mContentWidth * mActualScale); 2259 } 2260 } 2261 2262 @Override 2263 protected int computeVerticalScrollRange() { 2264 if (mDrawHistory) { 2265 return mHistoryHeight; 2266 } else { 2267 // to avoid rounding error caused unnecessary scrollbar, use floor 2268 return (int) Math.floor(mContentHeight * mActualScale); 2269 } 2270 } 2271 2272 @Override 2273 protected int computeVerticalScrollOffset() { 2274 return Math.max(mScrollY - getTitleHeight(), 0); 2275 } 2276 2277 @Override 2278 protected int computeVerticalScrollExtent() { 2279 return getViewHeight(); 2280 } 2281 2282 /** @hide */ 2283 @Override 2284 protected void onDrawVerticalScrollBar(Canvas canvas, 2285 Drawable scrollBar, 2286 int l, int t, int r, int b) { 2287 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2288 scrollBar.draw(canvas); 2289 } 2290 2291 /** 2292 * Get the url for the current page. This is not always the same as the url 2293 * passed to WebViewClient.onPageStarted because although the load for 2294 * that url has begun, the current page may not have changed. 2295 * @return The url for the current page. 2296 */ 2297 public String getUrl() { 2298 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2299 return h != null ? h.getUrl() : null; 2300 } 2301 2302 /** 2303 * Get the original url for the current page. This is not always the same 2304 * as the url passed to WebViewClient.onPageStarted because although the 2305 * load for that url has begun, the current page may not have changed. 2306 * Also, there may have been redirects resulting in a different url to that 2307 * originally requested. 2308 * @return The url that was originally requested for the current page. 2309 */ 2310 public String getOriginalUrl() { 2311 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2312 return h != null ? h.getOriginalUrl() : null; 2313 } 2314 2315 /** 2316 * Get the title for the current page. This is the title of the current page 2317 * until WebViewClient.onReceivedTitle is called. 2318 * @return The title for the current page. 2319 */ 2320 public String getTitle() { 2321 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2322 return h != null ? h.getTitle() : null; 2323 } 2324 2325 /** 2326 * Get the favicon for the current page. This is the favicon of the current 2327 * page until WebViewClient.onReceivedIcon is called. 2328 * @return The favicon for the current page. 2329 */ 2330 public Bitmap getFavicon() { 2331 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2332 return h != null ? h.getFavicon() : null; 2333 } 2334 2335 /** 2336 * Get the touch icon url for the apple-touch-icon <link> element. 2337 * @hide 2338 */ 2339 public String getTouchIconUrl() { 2340 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2341 return h != null ? h.getTouchIconUrl() : null; 2342 } 2343 2344 /** 2345 * Get the progress for the current page. 2346 * @return The progress for the current page between 0 and 100. 2347 */ 2348 public int getProgress() { 2349 return mCallbackProxy.getProgress(); 2350 } 2351 2352 /** 2353 * @return the height of the HTML content. 2354 */ 2355 public int getContentHeight() { 2356 return mContentHeight; 2357 } 2358 2359 /** 2360 * @return the width of the HTML content. 2361 * @hide 2362 */ 2363 public int getContentWidth() { 2364 return mContentWidth; 2365 } 2366 2367 /** 2368 * Pause all layout, parsing, and javascript timers for all webviews. This 2369 * is a global requests, not restricted to just this webview. This can be 2370 * useful if the application has been paused. 2371 */ 2372 public void pauseTimers() { 2373 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2374 } 2375 2376 /** 2377 * Resume all layout, parsing, and javascript timers for all webviews. 2378 * This will resume dispatching all timers. 2379 */ 2380 public void resumeTimers() { 2381 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2382 } 2383 2384 /** 2385 * Call this to pause any extra processing associated with this view and 2386 * its associated DOM/plugins/javascript/etc. For example, if the view is 2387 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2388 * network traffic. When the view is again "active", call onResume(). 2389 * 2390 * Note that this differs from pauseTimers(), which affects all views/DOMs 2391 * @hide 2392 */ 2393 public void onPause() { 2394 if (!mIsPaused) { 2395 mIsPaused = true; 2396 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2397 } 2398 } 2399 2400 /** 2401 * Call this to balanace a previous call to onPause() 2402 * @hide 2403 */ 2404 public void onResume() { 2405 if (mIsPaused) { 2406 mIsPaused = false; 2407 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2408 } 2409 } 2410 2411 /** 2412 * Returns true if the view is paused, meaning onPause() was called. Calling 2413 * onResume() sets the paused state back to false. 2414 * @hide 2415 */ 2416 public boolean isPaused() { 2417 return mIsPaused; 2418 } 2419 2420 /** 2421 * Call this to inform the view that memory is low so that it can 2422 * free any available memory. 2423 */ 2424 public void freeMemory() { 2425 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2426 } 2427 2428 /** 2429 * Clear the resource cache. Note that the cache is per-application, so 2430 * this will clear the cache for all WebViews used. 2431 * 2432 * @param includeDiskFiles If false, only the RAM cache is cleared. 2433 */ 2434 public void clearCache(boolean includeDiskFiles) { 2435 // Note: this really needs to be a static method as it clears cache for all 2436 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2437 // we can't make this static. 2438 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2439 includeDiskFiles ? 1 : 0, 0); 2440 } 2441 2442 /** 2443 * Make sure that clearing the form data removes the adapter from the 2444 * currently focused textfield if there is one. 2445 */ 2446 public void clearFormData() { 2447 if (inEditingMode()) { 2448 AutoCompleteAdapter adapter = null; 2449 mWebTextView.setAdapterCustom(adapter); 2450 } 2451 } 2452 2453 /** 2454 * Tell the WebView to clear its internal back/forward list. 2455 */ 2456 public void clearHistory() { 2457 mCallbackProxy.getBackForwardList().setClearPending(); 2458 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2459 } 2460 2461 /** 2462 * Clear the SSL preferences table stored in response to proceeding with SSL 2463 * certificate errors. 2464 */ 2465 public void clearSslPreferences() { 2466 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2467 } 2468 2469 /** 2470 * Return the WebBackForwardList for this WebView. This contains the 2471 * back/forward list for use in querying each item in the history stack. 2472 * This is a copy of the private WebBackForwardList so it contains only a 2473 * snapshot of the current state. Multiple calls to this method may return 2474 * different objects. The object returned from this method will not be 2475 * updated to reflect any new state. 2476 */ 2477 public WebBackForwardList copyBackForwardList() { 2478 return mCallbackProxy.getBackForwardList().clone(); 2479 } 2480 2481 /* 2482 * Highlight and scroll to the next occurance of String in findAll. 2483 * Wraps the page infinitely, and scrolls. Must be called after 2484 * calling findAll. 2485 * 2486 * @param forward Direction to search. 2487 */ 2488 public void findNext(boolean forward) { 2489 if (0 == mNativeClass) return; // client isn't initialized 2490 nativeFindNext(forward); 2491 } 2492 2493 /* 2494 * Find all instances of find on the page and highlight them. 2495 * @param find String to find. 2496 * @return int The number of occurances of the String "find" 2497 * that were found. 2498 */ 2499 public int findAll(String find) { 2500 if (0 == mNativeClass) return 0; // client isn't initialized 2501 int result = find != null ? nativeFindAll(find.toLowerCase(), 2502 find.toUpperCase()) : 0; 2503 invalidate(); 2504 mLastFind = find; 2505 return result; 2506 } 2507 2508 /** 2509 * @hide 2510 */ 2511 public void setFindIsUp(boolean isUp) { 2512 mFindIsUp = isUp; 2513 if (isUp) { 2514 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2515 false); 2516 } 2517 if (0 == mNativeClass) return; // client isn't initialized 2518 nativeSetFindIsUp(isUp); 2519 } 2520 2521 // Used to know whether the find dialog is open. Affects whether 2522 // or not we draw the highlights for matches. 2523 private boolean mFindIsUp; 2524 2525 private int mFindHeight; 2526 // Keep track of the last string sent, so we can search again after an 2527 // orientation change or the dismissal of the soft keyboard. 2528 private String mLastFind; 2529 2530 /** 2531 * Return the first substring consisting of the address of a physical 2532 * location. Currently, only addresses in the United States are detected, 2533 * and consist of: 2534 * - a house number 2535 * - a street name 2536 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2537 * - a city name 2538 * - a state or territory, either spelled out or two-letter abbr. 2539 * - an optional 5 digit or 9 digit zip code. 2540 * 2541 * All names must be correctly capitalized, and the zip code, if present, 2542 * must be valid for the state. The street type must be a standard USPS 2543 * spelling or abbreviation. The state or territory must also be spelled 2544 * or abbreviated using USPS standards. The house number may not exceed 2545 * five digits. 2546 * @param addr The string to search for addresses. 2547 * 2548 * @return the address, or if no address is found, return null. 2549 */ 2550 public static String findAddress(String addr) { 2551 return findAddress(addr, false); 2552 } 2553 2554 /** 2555 * @hide 2556 * Return the first substring consisting of the address of a physical 2557 * location. Currently, only addresses in the United States are detected, 2558 * and consist of: 2559 * - a house number 2560 * - a street name 2561 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2562 * - a city name 2563 * - a state or territory, either spelled out or two-letter abbr. 2564 * - an optional 5 digit or 9 digit zip code. 2565 * 2566 * Names are optionally capitalized, and the zip code, if present, 2567 * must be valid for the state. The street type must be a standard USPS 2568 * spelling or abbreviation. The state or territory must also be spelled 2569 * or abbreviated using USPS standards. The house number may not exceed 2570 * five digits. 2571 * @param addr The string to search for addresses. 2572 * @param caseInsensitive addr Set to true to make search ignore case. 2573 * 2574 * @return the address, or if no address is found, return null. 2575 */ 2576 public static String findAddress(String addr, boolean caseInsensitive) { 2577 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2578 } 2579 2580 /* 2581 * Clear the highlighting surrounding text matches created by findAll. 2582 */ 2583 public void clearMatches() { 2584 mLastFind = ""; 2585 if (mNativeClass == 0) 2586 return; 2587 nativeSetFindIsEmpty(); 2588 invalidate(); 2589 } 2590 2591 /** 2592 * @hide 2593 */ 2594 public void notifyFindDialogDismissed() { 2595 if (mWebViewCore == null) { 2596 return; 2597 } 2598 clearMatches(); 2599 setFindIsUp(false); 2600 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2601 false); 2602 // Now that the dialog has been removed, ensure that we scroll to a 2603 // location that is not beyond the end of the page. 2604 pinScrollTo(mScrollX, mScrollY, false, 0); 2605 invalidate(); 2606 } 2607 2608 /** 2609 * @hide 2610 */ 2611 public void setFindDialogHeight(int height) { 2612 if (DebugFlags.WEB_VIEW) { 2613 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2614 } 2615 mFindHeight = height; 2616 } 2617 2618 /** 2619 * Query the document to see if it contains any image references. The 2620 * message object will be dispatched with arg1 being set to 1 if images 2621 * were found and 0 if the document does not reference any images. 2622 * @param response The message that will be dispatched with the result. 2623 */ 2624 public void documentHasImages(Message response) { 2625 if (response == null) { 2626 return; 2627 } 2628 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2629 } 2630 2631 @Override 2632 public void computeScroll() { 2633 if (mScroller.computeScrollOffset()) { 2634 int oldX = mScrollX; 2635 int oldY = mScrollY; 2636 mScrollX = mScroller.getCurrX(); 2637 mScrollY = mScroller.getCurrY(); 2638 postInvalidate(); // So we draw again 2639 if (oldX != mScrollX || oldY != mScrollY) { 2640 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2641 } 2642 } else { 2643 super.computeScroll(); 2644 } 2645 } 2646 2647 private static int computeDuration(int dx, int dy) { 2648 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2649 int duration = distance * 1000 / STD_SPEED; 2650 return Math.min(duration, MAX_DURATION); 2651 } 2652 2653 // helper to pin the scrollBy parameters (already in view coordinates) 2654 // returns true if the scroll was changed 2655 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2656 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2657 } 2658 // helper to pin the scrollTo parameters (already in view coordinates) 2659 // returns true if the scroll was changed 2660 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2661 x = pinLocX(x); 2662 y = pinLocY(y); 2663 int dx = x - mScrollX; 2664 int dy = y - mScrollY; 2665 2666 if ((dx | dy) == 0) { 2667 return false; 2668 } 2669 if (animate) { 2670 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2671 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2672 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2673 awakenScrollBars(mScroller.getDuration()); 2674 invalidate(); 2675 } else { 2676 abortAnimation(); // just in case 2677 scrollTo(x, y); 2678 } 2679 return true; 2680 } 2681 2682 // Scale from content to view coordinates, and pin. 2683 // Also called by jni webview.cpp 2684 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2685 if (mDrawHistory) { 2686 // disallow WebView to change the scroll position as History Picture 2687 // is used in the view system. 2688 // TODO: as we switchOutDrawHistory when trackball or navigation 2689 // keys are hit, this should be safe. Right? 2690 return false; 2691 } 2692 cx = contentToViewDimension(cx); 2693 cy = contentToViewDimension(cy); 2694 if (mHeightCanMeasure) { 2695 // move our visible rect according to scroll request 2696 if (cy != 0) { 2697 Rect tempRect = new Rect(); 2698 calcOurVisibleRect(tempRect); 2699 tempRect.offset(cx, cy); 2700 requestRectangleOnScreen(tempRect); 2701 } 2702 // FIXME: We scroll horizontally no matter what because currently 2703 // ScrollView and ListView will not scroll horizontally. 2704 // FIXME: Why do we only scroll horizontally if there is no 2705 // vertical scroll? 2706// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2707 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2708 } else { 2709 return pinScrollBy(cx, cy, animate, 0); 2710 } 2711 } 2712 2713 /** 2714 * Called by CallbackProxy when the page finishes loading. 2715 * @param url The URL of the page which has finished loading. 2716 */ 2717 /* package */ void onPageFinished(String url) { 2718 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 2719 // If the user is now on a different page, or has scrolled the page 2720 // past the point where the title bar is offscreen, ignore the 2721 // scroll request. 2722 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 2723 && mScrollX == 0 && mScrollY == 0) { 2724 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 2725 SLIDE_TITLE_DURATION); 2726 } 2727 mPageThatNeedsToSlideTitleBarOffScreen = null; 2728 } 2729 } 2730 2731 /** 2732 * The URL of a page that sent a message to scroll the title bar off screen. 2733 * 2734 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 2735 * title bar off the screen. Sometimes, the scroll position is set before 2736 * the page finishes loading. Rather than scrolling while the page is still 2737 * loading, keep track of the URL and new scroll position so we can perform 2738 * the scroll once the page finishes loading. 2739 */ 2740 private String mPageThatNeedsToSlideTitleBarOffScreen; 2741 2742 /** 2743 * The destination Y scroll position to be used when the page finishes 2744 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 2745 */ 2746 private int mYDistanceToSlideTitleOffScreen; 2747 2748 // scale from content to view coordinates, and pin 2749 // return true if pin caused the final x/y different than the request cx/cy, 2750 // and a future scroll may reach the request cx/cy after our size has 2751 // changed 2752 // return false if the view scroll to the exact position as it is requested, 2753 // where negative numbers are taken to mean 0 2754 private boolean setContentScrollTo(int cx, int cy) { 2755 if (mDrawHistory) { 2756 // disallow WebView to change the scroll position as History Picture 2757 // is used in the view system. 2758 // One known case where this is called is that WebCore tries to 2759 // restore the scroll position. As history Picture already uses the 2760 // saved scroll position, it is ok to skip this. 2761 return false; 2762 } 2763 int vx; 2764 int vy; 2765 if ((cx | cy) == 0) { 2766 // If the page is being scrolled to (0,0), do not add in the title 2767 // bar's height, and simply scroll to (0,0). (The only other work 2768 // in contentToView_ is to multiply, so this would not change 0.) 2769 vx = 0; 2770 vy = 0; 2771 } else { 2772 vx = contentToViewX(cx); 2773 vy = contentToViewY(cy); 2774 } 2775// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2776// vx + " " + vy + "]"); 2777 // Some mobile sites attempt to scroll the title bar off the page by 2778 // scrolling to (0,1). If we are at the top left corner of the 2779 // page, assume this is an attempt to scroll off the title bar, and 2780 // animate the title bar off screen slowly enough that the user can see 2781 // it. 2782 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 2783 && mTitleBar != null) { 2784 // FIXME: 100 should be defined somewhere as our max progress. 2785 if (getProgress() < 100) { 2786 // Wait to scroll the title bar off screen until the page has 2787 // finished loading. Keep track of the URL and the destination 2788 // Y position 2789 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 2790 mYDistanceToSlideTitleOffScreen = vy; 2791 } else { 2792 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2793 } 2794 // Since we are animating, we have not yet reached the desired 2795 // scroll position. Do not return true to request another attempt 2796 return false; 2797 } 2798 pinScrollTo(vx, vy, false, 0); 2799 // If the request was to scroll to a negative coordinate, treat it as if 2800 // it was a request to scroll to 0 2801 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2802 return true; 2803 } else { 2804 return false; 2805 } 2806 } 2807 2808 // scale from content to view coordinates, and pin 2809 private void spawnContentScrollTo(int cx, int cy) { 2810 if (mDrawHistory) { 2811 // disallow WebView to change the scroll position as History Picture 2812 // is used in the view system. 2813 return; 2814 } 2815 int vx = contentToViewX(cx); 2816 int vy = contentToViewY(cy); 2817 pinScrollTo(vx, vy, true, 0); 2818 } 2819 2820 /** 2821 * These are from webkit, and are in content coordinate system (unzoomed) 2822 */ 2823 private void contentSizeChanged(boolean updateLayout) { 2824 // suppress 0,0 since we usually see real dimensions soon after 2825 // this avoids drawing the prev content in a funny place. If we find a 2826 // way to consolidate these notifications, this check may become 2827 // obsolete 2828 if ((mContentWidth | mContentHeight) == 0) { 2829 return; 2830 } 2831 2832 if (mHeightCanMeasure) { 2833 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2834 || updateLayout) { 2835 requestLayout(); 2836 } 2837 } else if (mWidthCanMeasure) { 2838 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2839 || updateLayout) { 2840 requestLayout(); 2841 } 2842 } else { 2843 // If we don't request a layout, try to send our view size to the 2844 // native side to ensure that WebCore has the correct dimensions. 2845 sendViewSizeZoom(); 2846 } 2847 } 2848 2849 /** 2850 * Set the WebViewClient that will receive various notifications and 2851 * requests. This will replace the current handler. 2852 * @param client An implementation of WebViewClient. 2853 */ 2854 public void setWebViewClient(WebViewClient client) { 2855 mCallbackProxy.setWebViewClient(client); 2856 } 2857 2858 /** 2859 * Gets the WebViewClient 2860 * @return the current WebViewClient instance. 2861 * 2862 *@hide pending API council approval. 2863 */ 2864 public WebViewClient getWebViewClient() { 2865 return mCallbackProxy.getWebViewClient(); 2866 } 2867 2868 /** 2869 * Register the interface to be used when content can not be handled by 2870 * the rendering engine, and should be downloaded instead. This will replace 2871 * the current handler. 2872 * @param listener An implementation of DownloadListener. 2873 */ 2874 public void setDownloadListener(DownloadListener listener) { 2875 mCallbackProxy.setDownloadListener(listener); 2876 } 2877 2878 /** 2879 * Set the chrome handler. This is an implementation of WebChromeClient for 2880 * use in handling Javascript dialogs, favicons, titles, and the progress. 2881 * This will replace the current handler. 2882 * @param client An implementation of WebChromeClient. 2883 */ 2884 public void setWebChromeClient(WebChromeClient client) { 2885 mCallbackProxy.setWebChromeClient(client); 2886 } 2887 2888 /** 2889 * Gets the chrome handler. 2890 * @return the current WebChromeClient instance. 2891 * 2892 * @hide API council approval. 2893 */ 2894 public WebChromeClient getWebChromeClient() { 2895 return mCallbackProxy.getWebChromeClient(); 2896 } 2897 2898 /** 2899 * Set the back/forward list client. This is an implementation of 2900 * WebBackForwardListClient for handling new items and changes in the 2901 * history index. 2902 * @param client An implementation of WebBackForwardListClient. 2903 * {@hide} 2904 */ 2905 public void setWebBackForwardListClient(WebBackForwardListClient client) { 2906 mCallbackProxy.setWebBackForwardListClient(client); 2907 } 2908 2909 /** 2910 * Gets the WebBackForwardListClient. 2911 * {@hide} 2912 */ 2913 public WebBackForwardListClient getWebBackForwardListClient() { 2914 return mCallbackProxy.getWebBackForwardListClient(); 2915 } 2916 2917 /** 2918 * Set the Picture listener. This is an interface used to receive 2919 * notifications of a new Picture. 2920 * @param listener An implementation of WebView.PictureListener. 2921 */ 2922 public void setPictureListener(PictureListener listener) { 2923 mPictureListener = listener; 2924 } 2925 2926 /** 2927 * {@hide} 2928 */ 2929 /* FIXME: Debug only! Remove for SDK! */ 2930 public void externalRepresentation(Message callback) { 2931 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2932 } 2933 2934 /** 2935 * {@hide} 2936 */ 2937 /* FIXME: Debug only! Remove for SDK! */ 2938 public void documentAsText(Message callback) { 2939 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2940 } 2941 2942 /** 2943 * Use this function to bind an object to Javascript so that the 2944 * methods can be accessed from Javascript. 2945 * <p><strong>IMPORTANT:</strong> 2946 * <ul> 2947 * <li> Using addJavascriptInterface() allows JavaScript to control your 2948 * application. This can be a very useful feature or a dangerous security 2949 * issue. When the HTML in the WebView is untrustworthy (for example, part 2950 * or all of the HTML is provided by some person or process), then an 2951 * attacker could inject HTML that will execute your code and possibly any 2952 * code of the attacker's choosing.<br> 2953 * Do not use addJavascriptInterface() unless all of the HTML in this 2954 * WebView was written by you.</li> 2955 * <li> The Java object that is bound runs in another thread and not in 2956 * the thread that it was constructed in.</li> 2957 * </ul></p> 2958 * @param obj The class instance to bind to Javascript 2959 * @param interfaceName The name to used to expose the class in Javascript 2960 */ 2961 public void addJavascriptInterface(Object obj, String interfaceName) { 2962 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2963 arg.mObject = obj; 2964 arg.mInterfaceName = interfaceName; 2965 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2966 } 2967 2968 /** 2969 * Return the WebSettings object used to control the settings for this 2970 * WebView. 2971 * @return A WebSettings object that can be used to control this WebView's 2972 * settings. 2973 */ 2974 public WebSettings getSettings() { 2975 return mWebViewCore.getSettings(); 2976 } 2977 2978 /** 2979 * Use this method to inform the webview about packages that are installed 2980 * in the system. This information will be used by the 2981 * navigator.isApplicationInstalled() API. 2982 * @param packageNames is a set of package names that are known to be 2983 * installed in the system. 2984 * 2985 * @hide not a public API 2986 */ 2987 public void addPackageNames(Set<String> packageNames) { 2988 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, packageNames); 2989 } 2990 2991 /** 2992 * Use this method to inform the webview about single packages that are 2993 * installed in the system. This information will be used by the 2994 * navigator.isApplicationInstalled() API. 2995 * @param packageName is the name of a package that is known to be 2996 * installed in the system. 2997 * 2998 * @hide not a public API 2999 */ 3000 public void addPackageName(String packageName) { 3001 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 3002 } 3003 3004 /** 3005 * Use this method to inform the webview about packages that are uninstalled 3006 * in the system. This information will be used by the 3007 * navigator.isApplicationInstalled() API. 3008 * @param packageName is the name of a package that has been uninstalled in 3009 * the system. 3010 * 3011 * @hide not a public API 3012 */ 3013 public void removePackageName(String packageName) { 3014 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 3015 } 3016 3017 /** 3018 * Return the list of currently loaded plugins. 3019 * @return The list of currently loaded plugins. 3020 * 3021 * @deprecated This was used for Gears, which has been deprecated. 3022 */ 3023 @Deprecated 3024 public static synchronized PluginList getPluginList() { 3025 return new PluginList(); 3026 } 3027 3028 /** 3029 * @deprecated This was used for Gears, which has been deprecated. 3030 */ 3031 @Deprecated 3032 public void refreshPlugins(boolean reloadOpenPages) { } 3033 3034 //------------------------------------------------------------------------- 3035 // Override View methods 3036 //------------------------------------------------------------------------- 3037 3038 @Override 3039 protected void finalize() throws Throwable { 3040 try { 3041 destroy(); 3042 } finally { 3043 super.finalize(); 3044 } 3045 } 3046 3047 @Override 3048 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3049 if (child == mTitleBar) { 3050 // When drawing the title bar, move it horizontally to always show 3051 // at the top of the WebView. 3052 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3053 } 3054 return super.drawChild(canvas, child, drawingTime); 3055 } 3056 3057 private void drawContent(Canvas canvas) { 3058 // Update the buttons in the picture, so when we draw the picture 3059 // to the screen, they are in the correct state. 3060 // Tell the native side if user is a) touching the screen, 3061 // b) pressing the trackball down, or c) pressing the enter key 3062 // If the cursor is on a button, we need to draw it in the pressed 3063 // state. 3064 // If mNativeClass is 0, we should not reach here, so we do not 3065 // need to check it again. 3066 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3067 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3068 || mTrackballDown || mGotCenterDown, false); 3069 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3070 } 3071 3072 @Override 3073 protected void onDraw(Canvas canvas) { 3074 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3075 if (mNativeClass == 0) { 3076 return; 3077 } 3078 3079 // if both mContentWidth and mContentHeight are 0, it means there is no 3080 // valid Picture passed to WebView yet. This can happen when WebView 3081 // just starts. Draw the background and return. 3082 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3083 canvas.drawColor(mBackgroundColor); 3084 return; 3085 } 3086 3087 int saveCount = canvas.save(); 3088 if (mTitleBar != null) { 3089 canvas.translate(0, (int) mTitleBar.getHeight()); 3090 } 3091 if (mDragTrackerHandler == null) { 3092 drawContent(canvas); 3093 } else { 3094 if (!mDragTrackerHandler.draw(canvas)) { 3095 // sometimes the tracker doesn't draw, even though its active 3096 drawContent(canvas); 3097 } 3098 if (mDragTrackerHandler.isFinished()) { 3099 mDragTrackerHandler = null; 3100 } 3101 } 3102 canvas.restoreToCount(saveCount); 3103 3104 // Now draw the shadow. 3105 int titleH = getVisibleTitleHeight(); 3106 if (mTitleBar != null && titleH == 0) { 3107 int height = (int) (5f * getContext().getResources() 3108 .getDisplayMetrics().density); 3109 mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(), 3110 mScrollY + height); 3111 mTitleShadow.draw(canvas); 3112 } 3113 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3114 invalidate(); 3115 } 3116 mWebViewCore.signalRepaintDone(); 3117 } 3118 3119 @Override 3120 public void setLayoutParams(ViewGroup.LayoutParams params) { 3121 if (params.height == LayoutParams.WRAP_CONTENT) { 3122 mWrapContent = true; 3123 } 3124 super.setLayoutParams(params); 3125 } 3126 3127 @Override 3128 public boolean performLongClick() { 3129 // performLongClick() is the result of a delayed message. If we switch 3130 // to windows overview, the WebView will be temporarily removed from the 3131 // view system. In that case, do nothing. 3132 if (getParent() == null) return false; 3133 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3134 // Send the click so that the textfield is in focus 3135 centerKeyPressOnTextField(); 3136 rebuildWebTextView(); 3137 } 3138 if (inEditingMode()) { 3139 return mWebTextView.performLongClick(); 3140 } else { 3141 return super.performLongClick(); 3142 } 3143 } 3144 3145 boolean inAnimateZoom() { 3146 return mZoomScale != 0; 3147 } 3148 3149 /** 3150 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3151 * has changed. This is especially important for password fields, which are 3152 * drawn by the WebTextView, since it conveys more information than what 3153 * webkit draws. Thus we need to reposition it to show in the correct 3154 * place. 3155 */ 3156 private boolean mNeedToAdjustWebTextView; 3157 3158 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3159 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3160 Rect vBox = contentToViewRect(contentBounds); 3161 Rect visibleRect = new Rect(); 3162 calcOurVisibleRect(visibleRect); 3163 // If the textfield is on screen, place the WebTextView in 3164 // its new place, accounting for our new scroll/zoom values, 3165 // and adjust its textsize. 3166 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3167 : visibleRect.contains(vBox)) { 3168 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3169 vBox.height()); 3170 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3171 contentToViewDimension( 3172 nativeFocusCandidateTextSize())); 3173 return true; 3174 } else { 3175 // The textfield is now off screen. The user probably 3176 // was not zooming to see the textfield better. Remove 3177 // the WebTextView. If the user types a key, and the 3178 // textfield is still in focus, we will reconstruct 3179 // the WebTextView and scroll it back on screen. 3180 mWebTextView.remove(); 3181 return false; 3182 } 3183 } 3184 3185 private void drawExtras(Canvas canvas, int extras) { 3186 // If mNativeClass is 0, we should not reach here, so we do not 3187 // need to check it again. 3188 // Currently for each draw we compute the animation values; 3189 // We may in the future decide to do that independently. 3190 if (nativeEvaluateLayersAnimations()) { 3191 // If we have unfinished (or unstarted) animations, 3192 // we ask for a repaint. 3193 invalidate(); 3194 } 3195 3196 nativeDrawExtras(canvas, extras); 3197 } 3198 3199 private void drawCoreAndCursorRing(Canvas canvas, int color, 3200 boolean drawCursorRing) { 3201 if (mDrawHistory) { 3202 canvas.scale(mActualScale, mActualScale); 3203 canvas.drawPicture(mHistoryPicture); 3204 return; 3205 } 3206 3207 boolean animateZoom = mZoomScale != 0; 3208 boolean animateScroll = ((!mScroller.isFinished() 3209 || mVelocityTracker != null) 3210 && (mTouchMode != TOUCH_DRAG_MODE || 3211 mHeldMotionless != MOTIONLESS_TRUE)) 3212 || mDeferTouchMode == TOUCH_DRAG_MODE; 3213 if (mTouchMode == TOUCH_DRAG_MODE) { 3214 if (mHeldMotionless == MOTIONLESS_PENDING) { 3215 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3216 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3217 mHeldMotionless = MOTIONLESS_FALSE; 3218 } 3219 if (mHeldMotionless == MOTIONLESS_FALSE) { 3220 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3221 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3222 mHeldMotionless = MOTIONLESS_PENDING; 3223 } 3224 } 3225 if (animateZoom) { 3226 float zoomScale; 3227 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 3228 if (interval < ZOOM_ANIMATION_LENGTH) { 3229 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 3230 zoomScale = 1.0f / (mInvInitialZoomScale 3231 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 3232 invalidate(); 3233 } else { 3234 zoomScale = mZoomScale; 3235 // set mZoomScale to be 0 as we have done animation 3236 mZoomScale = 0; 3237 WebViewCore.resumeUpdatePicture(mWebViewCore); 3238 // call invalidate() again to draw with the final filters 3239 invalidate(); 3240 if (mNeedToAdjustWebTextView) { 3241 mNeedToAdjustWebTextView = false; 3242 if (didUpdateTextViewBounds(false) 3243 && nativeFocusCandidateIsPassword()) { 3244 // If it is a password field, start drawing the 3245 // WebTextView once again. 3246 mWebTextView.setInPassword(true); 3247 } 3248 } 3249 } 3250 // calculate the intermediate scroll position. As we need to use 3251 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 3252 float scale = zoomScale * mInvInitialZoomScale; 3253 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 3254 - mZoomCenterX); 3255 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 3256 * zoomScale)) + mScrollX; 3257 int titleHeight = getTitleHeight(); 3258 int ty = Math.round(scale 3259 * (mInitialScrollY + mZoomCenterY - titleHeight) 3260 - (mZoomCenterY - titleHeight)); 3261 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 3262 - titleHeight, getViewHeight(), Math.round(mContentHeight 3263 * zoomScale)) + titleHeight) + mScrollY; 3264 canvas.translate(tx, ty); 3265 canvas.scale(zoomScale, zoomScale); 3266 if (inEditingMode() && !mNeedToAdjustWebTextView 3267 && mZoomScale != 0) { 3268 // The WebTextView is up. Keep track of this so we can adjust 3269 // its size and placement when we finish zooming 3270 mNeedToAdjustWebTextView = true; 3271 // If it is in password mode, turn it off so it does not draw 3272 // misplaced. 3273 if (nativeFocusCandidateIsPassword()) { 3274 mWebTextView.setInPassword(false); 3275 } 3276 } 3277 } else { 3278 canvas.scale(mActualScale, mActualScale); 3279 } 3280 3281 mWebViewCore.drawContentPicture(canvas, color, 3282 (animateZoom || mPreviewZoomOnly), animateScroll); 3283 if (mNativeClass == 0) return; 3284 // decide which adornments to draw 3285 int extras = DRAW_EXTRAS_NONE; 3286 if (mFindIsUp) { 3287 // When the FindDialog is up, only draw the matches if we are not in 3288 // the process of scrolling them into view. 3289 if (!animateScroll) { 3290 extras = DRAW_EXTRAS_FIND; 3291 } 3292 } else if (mShiftIsPressed && !nativeFocusIsPlugin()) { 3293 if (!animateZoom && !mPreviewZoomOnly) { 3294 extras = DRAW_EXTRAS_SELECTION; 3295 nativeSetSelectionRegion(mTouchSelection || mExtendSelection); 3296 nativeSetSelectionPointer(!mTouchSelection, mInvActualScale, 3297 mSelectX, mSelectY - getTitleHeight(), 3298 mExtendSelection); 3299 } 3300 } else if (drawCursorRing) { 3301 extras = DRAW_EXTRAS_CURSOR_RING; 3302 } 3303 drawExtras(canvas, extras); 3304 3305 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3306 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3307 mTouchMode = TOUCH_SHORTPRESS_MODE; 3308 HitTestResult hitTest = getHitTestResult(); 3309 if (hitTest == null 3310 || hitTest.mType == HitTestResult.UNKNOWN_TYPE) { 3311 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3312 } 3313 } 3314 } 3315 if (mFocusSizeChanged) { 3316 mFocusSizeChanged = false; 3317 // If we are zooming, this will get handled above, when the zoom 3318 // finishes. We also do not need to do this unless the WebTextView 3319 // is showing. 3320 if (!animateZoom && inEditingMode()) { 3321 didUpdateTextViewBounds(true); 3322 } 3323 } 3324 } 3325 3326 // draw history 3327 private boolean mDrawHistory = false; 3328 private Picture mHistoryPicture = null; 3329 private int mHistoryWidth = 0; 3330 private int mHistoryHeight = 0; 3331 3332 // Only check the flag, can be called from WebCore thread 3333 boolean drawHistory() { 3334 return mDrawHistory; 3335 } 3336 3337 // Should only be called in UI thread 3338 void switchOutDrawHistory() { 3339 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3340 if (mDrawHistory && mWebViewCore.pictureReady()) { 3341 mDrawHistory = false; 3342 invalidate(); 3343 int oldScrollX = mScrollX; 3344 int oldScrollY = mScrollY; 3345 mScrollX = pinLocX(mScrollX); 3346 mScrollY = pinLocY(mScrollY); 3347 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3348 mUserScroll = false; 3349 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3350 oldScrollY); 3351 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 3352 } else { 3353 sendOurVisibleRect(); 3354 } 3355 } 3356 } 3357 3358 WebViewCore.CursorData cursorData() { 3359 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3360 result.mMoveGeneration = nativeMoveGeneration(); 3361 result.mFrame = nativeCursorFramePointer(); 3362 Point position = nativeCursorPosition(); 3363 result.mX = position.x; 3364 result.mY = position.y; 3365 return result; 3366 } 3367 3368 /** 3369 * Delete text from start to end in the focused textfield. If there is no 3370 * focus, or if start == end, silently fail. If start and end are out of 3371 * order, swap them. 3372 * @param start Beginning of selection to delete. 3373 * @param end End of selection to delete. 3374 */ 3375 /* package */ void deleteSelection(int start, int end) { 3376 mTextGeneration++; 3377 WebViewCore.TextSelectionData data 3378 = new WebViewCore.TextSelectionData(start, end); 3379 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3380 data); 3381 } 3382 3383 /** 3384 * Set the selection to (start, end) in the focused textfield. If start and 3385 * end are out of order, swap them. 3386 * @param start Beginning of selection. 3387 * @param end End of selection. 3388 */ 3389 /* package */ void setSelection(int start, int end) { 3390 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3391 } 3392 3393 @Override 3394 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3395 InputConnection connection = super.onCreateInputConnection(outAttrs); 3396 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3397 return connection; 3398 } 3399 3400 /** 3401 * Called in response to a message from webkit telling us that the soft 3402 * keyboard should be launched. 3403 */ 3404 private void displaySoftKeyboard(boolean isTextView) { 3405 InputMethodManager imm = (InputMethodManager) 3406 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3407 3408 // bring it back to the default scale so that user can enter text 3409 boolean zoom = mActualScale < mDefaultScale; 3410 if (zoom) { 3411 mInZoomOverview = false; 3412 mZoomCenterX = mLastTouchX; 3413 mZoomCenterY = mLastTouchY; 3414 // do not change text wrap scale so that there is no reflow 3415 setNewZoomScale(mDefaultScale, false, false); 3416 } 3417 if (isTextView) { 3418 rebuildWebTextView(); 3419 if (inEditingMode()) { 3420 imm.showSoftInput(mWebTextView, 0); 3421 if (zoom) { 3422 didUpdateTextViewBounds(true); 3423 } 3424 return; 3425 } 3426 } 3427 // Used by plugins. 3428 // Also used if the navigation cache is out of date, and 3429 // does not recognize that a textfield is in focus. In that 3430 // case, use WebView as the targeted view. 3431 // see http://b/issue?id=2457459 3432 imm.showSoftInput(this, 0); 3433 } 3434 3435 // Called by WebKit to instruct the UI to hide the keyboard 3436 private void hideSoftKeyboard() { 3437 InputMethodManager imm = (InputMethodManager) 3438 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3439 3440 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3441 } 3442 3443 /* 3444 * This method checks the current focus and cursor and potentially rebuilds 3445 * mWebTextView to have the appropriate properties, such as password, 3446 * multiline, and what text it contains. It also removes it if necessary. 3447 */ 3448 /* package */ void rebuildWebTextView() { 3449 // If the WebView does not have focus, do nothing until it gains focus. 3450 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3451 return; 3452 } 3453 boolean alreadyThere = inEditingMode(); 3454 // inEditingMode can only return true if mWebTextView is non-null, 3455 // so we can safely call remove() if (alreadyThere) 3456 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3457 if (alreadyThere) { 3458 mWebTextView.remove(); 3459 } 3460 return; 3461 } 3462 // At this point, we know we have found an input field, so go ahead 3463 // and create the WebTextView if necessary. 3464 if (mWebTextView == null) { 3465 mWebTextView = new WebTextView(mContext, WebView.this); 3466 // Initialize our generation number. 3467 mTextGeneration = 0; 3468 } 3469 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3470 contentToViewDimension(nativeFocusCandidateTextSize())); 3471 Rect visibleRect = new Rect(); 3472 calcOurContentVisibleRect(visibleRect); 3473 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3474 // should be in content coordinates. 3475 Rect bounds = nativeFocusCandidateNodeBounds(); 3476 Rect vBox = contentToViewRect(bounds); 3477 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3478 if (!Rect.intersects(bounds, visibleRect)) { 3479 mWebTextView.bringIntoView(); 3480 } 3481 String text = nativeFocusCandidateText(); 3482 int nodePointer = nativeFocusCandidatePointer(); 3483 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3484 // It is possible that we have the same textfield, but it has moved, 3485 // i.e. In the case of opening/closing the screen. 3486 // In that case, we need to set the dimensions, but not the other 3487 // aspects. 3488 // If the text has been changed by webkit, update it. However, if 3489 // there has been more UI text input, ignore it. We will receive 3490 // another update when that text is recognized. 3491 if (text != null && !text.equals(mWebTextView.getText().toString()) 3492 && nativeTextGeneration() == mTextGeneration) { 3493 mWebTextView.setTextAndKeepSelection(text); 3494 } 3495 } else { 3496 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3497 Gravity.RIGHT : Gravity.NO_GRAVITY); 3498 // This needs to be called before setType, which may call 3499 // requestFormData, and it needs to have the correct nodePointer. 3500 mWebTextView.setNodePointer(nodePointer); 3501 mWebTextView.setType(nativeFocusCandidateType()); 3502 if (null == text) { 3503 if (DebugFlags.WEB_VIEW) { 3504 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3505 } 3506 text = ""; 3507 } 3508 mWebTextView.setTextAndKeepSelection(text); 3509 InputMethodManager imm = InputMethodManager.peekInstance(); 3510 if (imm != null && imm.isActive(mWebTextView)) { 3511 imm.restartInput(mWebTextView); 3512 } 3513 } 3514 mWebTextView.requestFocus(); 3515 } 3516 3517 /** 3518 * Called by WebTextView to find saved form data associated with the 3519 * textfield 3520 * @param name Name of the textfield. 3521 * @param nodePointer Pointer to the node of the textfield, so it can be 3522 * compared to the currently focused textfield when the data is 3523 * retrieved. 3524 */ 3525 /* package */ void requestFormData(String name, int nodePointer) { 3526 if (mWebViewCore.getSettings().getSaveFormData()) { 3527 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3528 update.arg1 = nodePointer; 3529 RequestFormData updater = new RequestFormData(name, getUrl(), 3530 update); 3531 Thread t = new Thread(updater); 3532 t.start(); 3533 } 3534 } 3535 3536 /** 3537 * Pass a message to find out the <label> associated with the <input> 3538 * identified by nodePointer 3539 * @param framePointer Pointer to the frame containing the <input> node 3540 * @param nodePointer Pointer to the node for which a <label> is desired. 3541 */ 3542 /* package */ void requestLabel(int framePointer, int nodePointer) { 3543 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3544 nodePointer); 3545 } 3546 3547 /* 3548 * This class requests an Adapter for the WebTextView which shows past 3549 * entries stored in the database. It is a Runnable so that it can be done 3550 * in its own thread, without slowing down the UI. 3551 */ 3552 private class RequestFormData implements Runnable { 3553 private String mName; 3554 private String mUrl; 3555 private Message mUpdateMessage; 3556 3557 public RequestFormData(String name, String url, Message msg) { 3558 mName = name; 3559 mUrl = url; 3560 mUpdateMessage = msg; 3561 } 3562 3563 public void run() { 3564 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3565 if (pastEntries.size() > 0) { 3566 AutoCompleteAdapter adapter = new 3567 AutoCompleteAdapter(mContext, pastEntries); 3568 mUpdateMessage.obj = adapter; 3569 mUpdateMessage.sendToTarget(); 3570 } 3571 } 3572 } 3573 3574 /** 3575 * Dump the display tree to "/sdcard/displayTree.txt" 3576 * 3577 * @hide debug only 3578 */ 3579 public void dumpDisplayTree() { 3580 nativeDumpDisplayTree(getUrl()); 3581 } 3582 3583 /** 3584 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 3585 * "/sdcard/domTree.txt" 3586 * 3587 * @hide debug only 3588 */ 3589 public void dumpDomTree(boolean toFile) { 3590 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 3591 } 3592 3593 /** 3594 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 3595 * to "/sdcard/renderTree.txt" 3596 * 3597 * @hide debug only 3598 */ 3599 public void dumpRenderTree(boolean toFile) { 3600 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 3601 } 3602 3603 /** 3604 * Dump the V8 counters to standard output. 3605 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 3606 * true. Otherwise, this will do nothing. 3607 * 3608 * @hide debug only 3609 */ 3610 public void dumpV8Counters() { 3611 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 3612 } 3613 3614 // This is used to determine long press with the center key. Does not 3615 // affect long press with the trackball/touch. 3616 private boolean mGotCenterDown = false; 3617 3618 @Override 3619 public boolean onKeyDown(int keyCode, KeyEvent event) { 3620 if (DebugFlags.WEB_VIEW) { 3621 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3622 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3623 } 3624 3625 if (mNativeClass == 0) { 3626 return false; 3627 } 3628 3629 // do this hack up front, so it always works, regardless of touch-mode 3630 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3631 mAutoRedraw = !mAutoRedraw; 3632 if (mAutoRedraw) { 3633 invalidate(); 3634 } 3635 return true; 3636 } 3637 3638 // Bubble up the key event if 3639 // 1. it is a system key; or 3640 // 2. the host application wants to handle it; 3641 if (event.isSystem() 3642 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3643 return false; 3644 } 3645 3646 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3647 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3648 if (nativeFocusIsPlugin()) { 3649 mShiftIsPressed = true; 3650 } else if (!nativeCursorWantsKeyEvents() && !mShiftIsPressed) { 3651 setUpSelectXY(); 3652 } 3653 } 3654 3655 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3656 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3657 switchOutDrawHistory(); 3658 if (nativeFocusIsPlugin()) { 3659 letPluginHandleNavKey(keyCode, event.getEventTime(), true); 3660 return true; 3661 } 3662 if (mShiftIsPressed) { 3663 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 3664 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 3665 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 3666 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 3667 int multiplier = event.getRepeatCount() + 1; 3668 moveSelection(xRate * multiplier, yRate * multiplier); 3669 return true; 3670 } 3671 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 3672 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3673 return true; 3674 } 3675 // Bubble up the key event as WebView doesn't handle it 3676 return false; 3677 } 3678 3679 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3680 switchOutDrawHistory(); 3681 if (event.getRepeatCount() == 0) { 3682 if (mShiftIsPressed && !nativeFocusIsPlugin()) { 3683 return true; // discard press if copy in progress 3684 } 3685 mGotCenterDown = true; 3686 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3687 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3688 // Already checked mNativeClass, so we do not need to check it 3689 // again. 3690 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3691 return true; 3692 } 3693 // Bubble up the key event as WebView doesn't handle it 3694 return false; 3695 } 3696 3697 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3698 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3699 // turn off copy select if a shift-key combo is pressed 3700 mExtendSelection = mShiftIsPressed = false; 3701 if (mTouchMode == TOUCH_SELECT_MODE) { 3702 mTouchMode = TOUCH_INIT_MODE; 3703 } 3704 } 3705 3706 if (getSettings().getNavDump()) { 3707 switch (keyCode) { 3708 case KeyEvent.KEYCODE_4: 3709 dumpDisplayTree(); 3710 break; 3711 case KeyEvent.KEYCODE_5: 3712 case KeyEvent.KEYCODE_6: 3713 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 3714 break; 3715 case KeyEvent.KEYCODE_7: 3716 case KeyEvent.KEYCODE_8: 3717 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 3718 break; 3719 case KeyEvent.KEYCODE_9: 3720 nativeInstrumentReport(); 3721 return true; 3722 } 3723 } 3724 3725 if (nativeCursorIsTextInput()) { 3726 // This message will put the node in focus, for the DOM's notion 3727 // of focus, and make the focuscontroller active 3728 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3729 nativeCursorNodePointer()); 3730 // This will bring up the WebTextView and put it in focus, for 3731 // our view system's notion of focus 3732 rebuildWebTextView(); 3733 // Now we need to pass the event to it 3734 if (inEditingMode()) { 3735 mWebTextView.setDefaultSelection(); 3736 return mWebTextView.dispatchKeyEvent(event); 3737 } 3738 } else if (nativeHasFocusNode()) { 3739 // In this case, the cursor is not on a text input, but the focus 3740 // might be. Check it, and if so, hand over to the WebTextView. 3741 rebuildWebTextView(); 3742 if (inEditingMode()) { 3743 mWebTextView.setDefaultSelection(); 3744 return mWebTextView.dispatchKeyEvent(event); 3745 } 3746 } 3747 3748 // TODO: should we pass all the keys to DOM or check the meta tag 3749 if (nativeCursorWantsKeyEvents() || true) { 3750 // pass the key to DOM 3751 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3752 // return true as DOM handles the key 3753 return true; 3754 } 3755 3756 // Bubble up the key event as WebView doesn't handle it 3757 return false; 3758 } 3759 3760 @Override 3761 public boolean onKeyUp(int keyCode, KeyEvent event) { 3762 if (DebugFlags.WEB_VIEW) { 3763 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3764 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3765 } 3766 3767 if (mNativeClass == 0) { 3768 return false; 3769 } 3770 3771 // special CALL handling when cursor node's href is "tel:XXX" 3772 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3773 String text = nativeCursorText(); 3774 if (!nativeCursorIsTextInput() && text != null 3775 && text.startsWith(SCHEME_TEL)) { 3776 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3777 getContext().startActivity(intent); 3778 return true; 3779 } 3780 } 3781 3782 // Bubble up the key event if 3783 // 1. it is a system key; or 3784 // 2. the host application wants to handle it; 3785 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3786 return false; 3787 } 3788 3789 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3790 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3791 if (nativeFocusIsPlugin()) { 3792 mShiftIsPressed = false; 3793 } else if (commitCopy()) { 3794 return true; 3795 } 3796 } 3797 3798 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3799 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3800 if (nativeFocusIsPlugin()) { 3801 letPluginHandleNavKey(keyCode, event.getEventTime(), false); 3802 return true; 3803 } 3804 // always handle the navigation keys in the UI thread 3805 // Bubble up the key event as WebView doesn't handle it 3806 return false; 3807 } 3808 3809 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3810 // remove the long press message first 3811 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3812 mGotCenterDown = false; 3813 3814 if (mShiftIsPressed && !nativeFocusIsPlugin()) { 3815 if (mExtendSelection) { 3816 commitCopy(); 3817 } else { 3818 mExtendSelection = true; 3819 invalidate(); // draw the i-beam instead of the arrow 3820 } 3821 return true; // discard press if copy in progress 3822 } 3823 3824 // perform the single click 3825 Rect visibleRect = sendOurVisibleRect(); 3826 // Note that sendOurVisibleRect calls viewToContent, so the 3827 // coordinates should be in content coordinates. 3828 if (!nativeCursorIntersects(visibleRect)) { 3829 return false; 3830 } 3831 WebViewCore.CursorData data = cursorData(); 3832 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3833 playSoundEffect(SoundEffectConstants.CLICK); 3834 if (nativeCursorIsTextInput()) { 3835 rebuildWebTextView(); 3836 centerKeyPressOnTextField(); 3837 if (inEditingMode()) { 3838 mWebTextView.setDefaultSelection(); 3839 } 3840 return true; 3841 } 3842 clearTextEntry(true); 3843 nativeSetFollowedLink(true); 3844 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 3845 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3846 nativeCursorNodePointer()); 3847 } 3848 return true; 3849 } 3850 3851 // TODO: should we pass all the keys to DOM or check the meta tag 3852 if (nativeCursorWantsKeyEvents() || true) { 3853 // pass the key to DOM 3854 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3855 // return true as DOM handles the key 3856 return true; 3857 } 3858 3859 // Bubble up the key event as WebView doesn't handle it 3860 return false; 3861 } 3862 3863 private void setUpSelectXY() { 3864 mExtendSelection = false; 3865 mShiftIsPressed = true; 3866 if (nativeHasCursorNode()) { 3867 Rect rect = nativeCursorNodeBounds(); 3868 mSelectX = contentToViewX(rect.left); 3869 mSelectY = contentToViewY(rect.top); 3870 } else if (mLastTouchY > getVisibleTitleHeight()) { 3871 mSelectX = mScrollX + (int) mLastTouchX; 3872 mSelectY = mScrollY + (int) mLastTouchY; 3873 } else { 3874 mSelectX = mScrollX + getViewWidth() / 2; 3875 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 3876 } 3877 nativeHideCursor(); 3878 } 3879 3880 /** 3881 * Use this method to put the WebView into text selection mode. 3882 * Do not rely on this functionality; it will be deprecated in the future. 3883 */ 3884 public void emulateShiftHeld() { 3885 if (0 == mNativeClass) return; // client isn't initialized 3886 setUpSelectXY(); 3887 } 3888 3889 private boolean commitCopy() { 3890 boolean copiedSomething = false; 3891 if (mExtendSelection) { 3892 String selection = nativeGetSelection(); 3893 if (selection != "") { 3894 if (DebugFlags.WEB_VIEW) { 3895 Log.v(LOGTAG, "commitCopy \"" + selection + "\""); 3896 } 3897 Toast.makeText(mContext 3898 , com.android.internal.R.string.text_copied 3899 , Toast.LENGTH_SHORT).show(); 3900 copiedSomething = true; 3901 try { 3902 IClipboard clip = IClipboard.Stub.asInterface( 3903 ServiceManager.getService("clipboard")); 3904 clip.setClipboardText(selection); 3905 } catch (android.os.RemoteException e) { 3906 Log.e(LOGTAG, "Clipboard failed", e); 3907 } 3908 } 3909 mExtendSelection = false; 3910 } 3911 mShiftIsPressed = false; 3912 invalidate(); // remove selection region and pointer 3913 if (mTouchMode == TOUCH_SELECT_MODE) { 3914 mTouchMode = TOUCH_INIT_MODE; 3915 } 3916 return copiedSomething; 3917 } 3918 3919 @Override 3920 protected void onAttachedToWindow() { 3921 super.onAttachedToWindow(); 3922 if (hasWindowFocus()) setActive(true); 3923 } 3924 3925 @Override 3926 protected void onDetachedFromWindow() { 3927 clearTextEntry(false); 3928 dismissZoomControl(); 3929 if (hasWindowFocus()) setActive(false); 3930 super.onDetachedFromWindow(); 3931 } 3932 3933 /** 3934 * @deprecated WebView no longer needs to implement 3935 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3936 */ 3937 @Deprecated 3938 public void onChildViewAdded(View parent, View child) {} 3939 3940 /** 3941 * @deprecated WebView no longer needs to implement 3942 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3943 */ 3944 @Deprecated 3945 public void onChildViewRemoved(View p, View child) {} 3946 3947 /** 3948 * @deprecated WebView should not have implemented 3949 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3950 * does nothing now. 3951 */ 3952 @Deprecated 3953 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3954 } 3955 3956 private void setActive(boolean active) { 3957 if (active) { 3958 if (hasFocus()) { 3959 // If our window regained focus, and we have focus, then begin 3960 // drawing the cursor ring 3961 mDrawCursorRing = true; 3962 if (mNativeClass != 0) { 3963 nativeRecordButtons(true, false, true); 3964 if (inEditingMode()) { 3965 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3966 } 3967 } 3968 } else { 3969 // If our window gained focus, but we do not have it, do not 3970 // draw the cursor ring. 3971 mDrawCursorRing = false; 3972 // We do not call nativeRecordButtons here because we assume 3973 // that when we lost focus, or window focus, it got called with 3974 // false for the first parameter 3975 } 3976 } else { 3977 if (mWebViewCore != null && getSettings().getBuiltInZoomControls() 3978 && !getZoomButtonsController().isVisible()) { 3979 /* 3980 * The zoom controls come in their own window, so our window 3981 * loses focus. Our policy is to not draw the cursor ring if 3982 * our window is not focused, but this is an exception since 3983 * the user can still navigate the web page with the zoom 3984 * controls showing. 3985 */ 3986 // If our window has lost focus, stop drawing the cursor ring 3987 mDrawCursorRing = false; 3988 } 3989 mGotKeyDown = false; 3990 mShiftIsPressed = false; 3991 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3992 mTouchMode = TOUCH_DONE_MODE; 3993 if (mNativeClass != 0) { 3994 nativeRecordButtons(false, false, true); 3995 } 3996 setFocusControllerInactive(); 3997 } 3998 invalidate(); 3999 } 4000 4001 // To avoid drawing the cursor ring, and remove the TextView when our window 4002 // loses focus. 4003 @Override 4004 public void onWindowFocusChanged(boolean hasWindowFocus) { 4005 setActive(hasWindowFocus); 4006 if (hasWindowFocus) { 4007 BrowserFrame.sJavaBridge.setActiveWebView(this); 4008 } else { 4009 BrowserFrame.sJavaBridge.removeActiveWebView(this); 4010 } 4011 super.onWindowFocusChanged(hasWindowFocus); 4012 } 4013 4014 /* 4015 * Pass a message to WebCore Thread, telling the WebCore::Page's 4016 * FocusController to be "inactive" so that it will 4017 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4018 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4019 */ 4020 /* package */ void setFocusControllerInactive() { 4021 // Do not need to also check whether mWebViewCore is null, because 4022 // mNativeClass is only set if mWebViewCore is non null 4023 if (mNativeClass == 0) return; 4024 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 4025 } 4026 4027 @Override 4028 protected void onFocusChanged(boolean focused, int direction, 4029 Rect previouslyFocusedRect) { 4030 if (DebugFlags.WEB_VIEW) { 4031 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4032 } 4033 if (focused) { 4034 // When we regain focus, if we have window focus, resume drawing 4035 // the cursor ring 4036 if (hasWindowFocus()) { 4037 mDrawCursorRing = true; 4038 if (mNativeClass != 0) { 4039 nativeRecordButtons(true, false, true); 4040 } 4041 //} else { 4042 // The WebView has gained focus while we do not have 4043 // windowfocus. When our window lost focus, we should have 4044 // called nativeRecordButtons(false...) 4045 } 4046 } else { 4047 // When we lost focus, unless focus went to the TextView (which is 4048 // true if we are in editing mode), stop drawing the cursor ring. 4049 if (!inEditingMode()) { 4050 mDrawCursorRing = false; 4051 if (mNativeClass != 0) { 4052 nativeRecordButtons(false, false, true); 4053 } 4054 setFocusControllerInactive(); 4055 } 4056 mGotKeyDown = false; 4057 } 4058 4059 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4060 } 4061 4062 /** 4063 * @hide 4064 */ 4065 @Override 4066 protected boolean setFrame(int left, int top, int right, int bottom) { 4067 boolean changed = super.setFrame(left, top, right, bottom); 4068 if (!changed && mHeightCanMeasure) { 4069 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4070 // in WebViewCore after we get the first layout. We do call 4071 // requestLayout() when we get contentSizeChanged(). But the View 4072 // system won't call onSizeChanged if the dimension is not changed. 4073 // In this case, we need to call sendViewSizeZoom() explicitly to 4074 // notify the WebKit about the new dimensions. 4075 sendViewSizeZoom(); 4076 } 4077 return changed; 4078 } 4079 4080 private static class PostScale implements Runnable { 4081 final WebView mWebView; 4082 final boolean mUpdateTextWrap; 4083 4084 public PostScale(WebView webView, boolean updateTextWrap) { 4085 mWebView = webView; 4086 mUpdateTextWrap = updateTextWrap; 4087 } 4088 4089 public void run() { 4090 if (mWebView.mWebViewCore != null) { 4091 // we always force, in case our height changed, in which case we 4092 // still want to send the notification over to webkit. 4093 mWebView.setNewZoomScale(mWebView.mActualScale, 4094 mUpdateTextWrap, true); 4095 // update the zoom buttons as the scale can be changed 4096 if (mWebView.getSettings().getBuiltInZoomControls()) { 4097 mWebView.updateZoomButtonsEnabled(); 4098 } 4099 } 4100 } 4101 } 4102 4103 @Override 4104 protected void onSizeChanged(int w, int h, int ow, int oh) { 4105 super.onSizeChanged(w, h, ow, oh); 4106 // Center zooming to the center of the screen. 4107 if (mZoomScale == 0) { // unless we're already zooming 4108 // To anchor at top left corner. 4109 mZoomCenterX = 0; 4110 mZoomCenterY = getVisibleTitleHeight(); 4111 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4112 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4113 } 4114 4115 // adjust the max viewport width depending on the view dimensions. This 4116 // is to ensure the scaling is not going insane. So do not shrink it if 4117 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4118 int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE); 4119 if (newMaxViewportWidth > sMaxViewportWidth) { 4120 sMaxViewportWidth = newMaxViewportWidth; 4121 } 4122 4123 // update mMinZoomScale if the minimum zoom scale is not fixed 4124 if (!mMinZoomScaleFixed) { 4125 // when change from narrow screen to wide screen, the new viewWidth 4126 // can be wider than the old content width. We limit the minimum 4127 // scale to 1.0f. The proper minimum scale will be calculated when 4128 // the new picture shows up. 4129 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 4130 / (mDrawHistory ? mHistoryPicture.getWidth() 4131 : mZoomOverviewWidth)); 4132 if (mInitialScaleInPercent > 0) { 4133 // limit the minZoomScale to the initialScale if it is set 4134 float initialScale = mInitialScaleInPercent / 100.0f; 4135 if (mMinZoomScale > initialScale) { 4136 mMinZoomScale = initialScale; 4137 } 4138 } 4139 } 4140 4141 dismissZoomControl(); 4142 4143 // onSizeChanged() is called during WebView layout. And any 4144 // requestLayout() is blocked during layout. As setNewZoomScale() will 4145 // call its child View to reposition itself through ViewManager's 4146 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 4147 // <b/> 4148 // only update the text wrap scale if width changed. 4149 post(new PostScale(this, w != ow)); 4150 } 4151 4152 @Override 4153 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4154 super.onScrollChanged(l, t, oldl, oldt); 4155 sendOurVisibleRect(); 4156 // update WebKit if visible title bar height changed. The logic is same 4157 // as getVisibleTitleHeight. 4158 int titleHeight = getTitleHeight(); 4159 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4160 sendViewSizeZoom(); 4161 } 4162 } 4163 4164 @Override 4165 public boolean dispatchKeyEvent(KeyEvent event) { 4166 boolean dispatch = true; 4167 4168 // Textfields and plugins need to receive the shift up key even if 4169 // another key was released while the shift key was held down. 4170 if (!inEditingMode() && (mNativeClass == 0 || !nativeFocusIsPlugin())) { 4171 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4172 mGotKeyDown = true; 4173 } else { 4174 if (!mGotKeyDown) { 4175 /* 4176 * We got a key up for which we were not the recipient of 4177 * the original key down. Don't give it to the view. 4178 */ 4179 dispatch = false; 4180 } 4181 mGotKeyDown = false; 4182 } 4183 } 4184 4185 if (dispatch) { 4186 return super.dispatchKeyEvent(event); 4187 } else { 4188 // We didn't dispatch, so let something else handle the key 4189 return false; 4190 } 4191 } 4192 4193 // Here are the snap align logic: 4194 // 1. If it starts nearly horizontally or vertically, snap align; 4195 // 2. If there is a dramitic direction change, let it go; 4196 // 3. If there is a same direction back and forth, lock it. 4197 4198 // adjustable parameters 4199 private int mMinLockSnapReverseDistance; 4200 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4201 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4202 4203 private static int sign(float x) { 4204 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4205 } 4206 4207 // if the page can scroll <= this value, we won't allow the drag tracker 4208 // to have any effect. 4209 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4210 4211 private class DragTrackerHandler { 4212 private final DragTracker mProxy; 4213 private final float mStartY, mStartX; 4214 private final float mMinDY, mMinDX; 4215 private final float mMaxDY, mMaxDX; 4216 private float mCurrStretchY, mCurrStretchX; 4217 private int mSX, mSY; 4218 private Interpolator mInterp; 4219 private float[] mXY = new float[2]; 4220 4221 // inner (non-state) classes can't have enums :( 4222 private static final int DRAGGING_STATE = 0; 4223 private static final int ANIMATING_STATE = 1; 4224 private static final int FINISHED_STATE = 2; 4225 private int mState; 4226 4227 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4228 mProxy = proxy; 4229 4230 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4231 int viewTop = getScrollY(); 4232 int viewBottom = viewTop + getHeight(); 4233 4234 mStartY = y; 4235 mMinDY = -viewTop; 4236 mMaxDY = docBottom - viewBottom; 4237 4238 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4239 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4240 " up/down= " + mMinDY + " " + mMaxDY); 4241 } 4242 4243 int docRight = computeHorizontalScrollRange(); 4244 int viewLeft = getScrollX(); 4245 int viewRight = viewLeft + getWidth(); 4246 mStartX = x; 4247 mMinDX = -viewLeft; 4248 mMaxDX = docRight - viewRight; 4249 4250 mState = DRAGGING_STATE; 4251 mProxy.onStartDrag(x, y); 4252 4253 // ensure we buildBitmap at least once 4254 mSX = -99999; 4255 } 4256 4257 private float computeStretch(float delta, float min, float max) { 4258 float stretch = 0; 4259 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4260 if (delta < min) { 4261 stretch = delta - min; 4262 } else if (delta > max) { 4263 stretch = delta - max; 4264 } 4265 } 4266 return stretch; 4267 } 4268 4269 public void dragTo(float x, float y) { 4270 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4271 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4272 4273 if ((mSnapScrollMode & SNAP_X) != 0) { 4274 sy = 0; 4275 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4276 sx = 0; 4277 } 4278 4279 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4280 mCurrStretchX = sx; 4281 mCurrStretchY = sy; 4282 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4283 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4284 " " + sy); 4285 } 4286 if (mProxy.onStretchChange(sx, sy)) { 4287 invalidate(); 4288 } 4289 } 4290 } 4291 4292 public void stopDrag() { 4293 final int DURATION = 200; 4294 int now = (int)SystemClock.uptimeMillis(); 4295 mInterp = new Interpolator(2); 4296 mXY[0] = mCurrStretchX; 4297 mXY[1] = mCurrStretchY; 4298 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4299 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4300 mInterp.setKeyFrame(0, now, mXY, blend); 4301 float[] zerozero = new float[] { 0, 0 }; 4302 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4303 mState = ANIMATING_STATE; 4304 4305 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4306 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4307 } 4308 } 4309 4310 // Call this after each draw. If it ruturns null, the tracker is done 4311 public boolean isFinished() { 4312 return mState == FINISHED_STATE; 4313 } 4314 4315 private int hiddenHeightOfTitleBar() { 4316 return getTitleHeight() - getVisibleTitleHeight(); 4317 } 4318 4319 // need a way to know if 565 or 8888 is the right config for 4320 // capturing the display and giving it to the drag proxy 4321 private Bitmap.Config offscreenBitmapConfig() { 4322 // hard code 565 for now 4323 return Bitmap.Config.RGB_565; 4324 } 4325 4326 /* If the tracker draws, then this returns true, otherwise it will 4327 return false, and draw nothing. 4328 */ 4329 public boolean draw(Canvas canvas) { 4330 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4331 int sx = getScrollX(); 4332 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4333 if (mSX != sx || mSY != sy) { 4334 buildBitmap(sx, sy); 4335 mSX = sx; 4336 mSY = sy; 4337 } 4338 4339 if (mState == ANIMATING_STATE) { 4340 Interpolator.Result result = mInterp.timeToValues(mXY); 4341 if (result == Interpolator.Result.FREEZE_END) { 4342 mState = FINISHED_STATE; 4343 return false; 4344 } else { 4345 mProxy.onStretchChange(mXY[0], mXY[1]); 4346 invalidate(); 4347 // fall through to the draw 4348 } 4349 } 4350 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4351 canvas.translate(sx, sy); 4352 mProxy.onDraw(canvas); 4353 canvas.restoreToCount(count); 4354 return true; 4355 } 4356 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4357 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4358 mCurrStretchX + " " + mCurrStretchY); 4359 } 4360 return false; 4361 } 4362 4363 private void buildBitmap(int sx, int sy) { 4364 int w = getWidth(); 4365 int h = getViewHeight(); 4366 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4367 Canvas canvas = new Canvas(bm); 4368 canvas.translate(-sx, -sy); 4369 drawContent(canvas); 4370 4371 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4372 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4373 " " + sy + " " + w + " " + h); 4374 } 4375 mProxy.onBitmapChange(bm); 4376 } 4377 } 4378 4379 /** @hide */ 4380 public static class DragTracker { 4381 public void onStartDrag(float x, float y) {} 4382 public boolean onStretchChange(float sx, float sy) { 4383 // return true to have us inval the view 4384 return false; 4385 } 4386 public void onStopDrag() {} 4387 public void onBitmapChange(Bitmap bm) {} 4388 public void onDraw(Canvas canvas) {} 4389 } 4390 4391 /** @hide */ 4392 public DragTracker getDragTracker() { 4393 return mDragTracker; 4394 } 4395 4396 /** @hide */ 4397 public void setDragTracker(DragTracker tracker) { 4398 mDragTracker = tracker; 4399 } 4400 4401 private DragTracker mDragTracker; 4402 private DragTrackerHandler mDragTrackerHandler; 4403 4404 private class ScaleDetectorListener implements 4405 ScaleGestureDetector.OnScaleGestureListener { 4406 4407 public boolean onScaleBegin(ScaleGestureDetector detector) { 4408 // cancel the single touch handling 4409 cancelTouch(); 4410 dismissZoomControl(); 4411 // reset the zoom overview mode so that the page won't auto grow 4412 mInZoomOverview = false; 4413 // If it is in password mode, turn it off so it does not draw 4414 // misplaced. 4415 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4416 mWebTextView.setInPassword(false); 4417 } 4418 4419 mViewManager.startZoom(); 4420 4421 return true; 4422 } 4423 4424 public void onScaleEnd(ScaleGestureDetector detector) { 4425 if (mPreviewZoomOnly) { 4426 mPreviewZoomOnly = false; 4427 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4428 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4429 // don't reflow when zoom in; when zoom out, do reflow if the 4430 // new scale is almost minimum scale; 4431 boolean reflowNow = (mActualScale - mMinZoomScale 4432 <= MINIMUM_SCALE_INCREMENT) 4433 || ((mActualScale <= 0.8 * mTextWrapScale)); 4434 // force zoom after mPreviewZoomOnly is set to false so that the 4435 // new view size will be passed to the WebKit 4436 setNewZoomScale(mActualScale, reflowNow, true); 4437 // call invalidate() to draw without zoom filter 4438 invalidate(); 4439 } 4440 // adjust the edit text view if needed 4441 if (inEditingMode() && didUpdateTextViewBounds(false) 4442 && nativeFocusCandidateIsPassword()) { 4443 // If it is a password field, start drawing the 4444 // WebTextView once again. 4445 mWebTextView.setInPassword(true); 4446 } 4447 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4448 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4449 // may trigger the unwanted fling. 4450 mTouchMode = TOUCH_PINCH_DRAG; 4451 mConfirmMove = true; 4452 startTouch(detector.getFocusX(), detector.getFocusY(), 4453 mLastTouchTime); 4454 4455 mViewManager.endZoom(); 4456 } 4457 4458 public boolean onScale(ScaleGestureDetector detector) { 4459 float scale = (float) (Math.round(detector.getScaleFactor() 4460 * mActualScale * 100) / 100.0); 4461 if (Math.abs(scale - mActualScale) >= MINIMUM_SCALE_INCREMENT) { 4462 mPreviewZoomOnly = true; 4463 // limit the scale change per step 4464 if (scale > mActualScale) { 4465 scale = Math.min(scale, mActualScale * 1.25f); 4466 } else { 4467 scale = Math.max(scale, mActualScale * 0.8f); 4468 } 4469 mZoomCenterX = detector.getFocusX(); 4470 mZoomCenterY = detector.getFocusY(); 4471 setNewZoomScale(scale, false, false); 4472 invalidate(); 4473 return true; 4474 } 4475 return false; 4476 } 4477 } 4478 4479 private boolean hitFocusedPlugin(int contentX, int contentY) { 4480 if (DebugFlags.WEB_VIEW) { 4481 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 4482 Rect r = nativeFocusNodeBounds(); 4483 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 4484 + ", " + r.right + ", " + r.bottom + ")"); 4485 } 4486 return nativeFocusIsPlugin() 4487 && nativeFocusNodeBounds().contains(contentX, contentY); 4488 } 4489 4490 private boolean shouldForwardTouchEvent() { 4491 return mFullScreenHolder != null || (mForwardTouchEvents 4492 && mTouchMode != TOUCH_SELECT_MODE 4493 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 4494 } 4495 4496 private boolean inFullScreenMode() { 4497 return mFullScreenHolder != null; 4498 } 4499 4500 @Override 4501 public boolean onTouchEvent(MotionEvent ev) { 4502 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4503 return false; 4504 } 4505 4506 if (DebugFlags.WEB_VIEW) { 4507 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4508 + mTouchMode); 4509 } 4510 4511 int action; 4512 float x, y; 4513 long eventTime = ev.getEventTime(); 4514 4515 // FIXME: we may consider to give WebKit an option to handle multi-touch 4516 // events later. 4517 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 4518 if (mMinZoomScale < mMaxZoomScale) { 4519 mScaleDetector.onTouchEvent(ev); 4520 if (mScaleDetector.isInProgress()) { 4521 mLastTouchTime = eventTime; 4522 return true; 4523 } 4524 x = mScaleDetector.getFocusX(); 4525 y = mScaleDetector.getFocusY(); 4526 action = ev.getAction() & MotionEvent.ACTION_MASK; 4527 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4528 cancelTouch(); 4529 action = MotionEvent.ACTION_DOWN; 4530 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4531 // set mLastTouchX/Y to the remaining point 4532 mLastTouchX = x; 4533 mLastTouchY = y; 4534 } else if (action == MotionEvent.ACTION_MOVE) { 4535 // negative x or y indicate it is on the edge, skip it. 4536 if (x < 0 || y < 0) { 4537 return true; 4538 } 4539 } 4540 } else { 4541 // if the page disallow zoom, skip multi-pointer action 4542 return true; 4543 } 4544 } else { 4545 action = ev.getAction(); 4546 x = ev.getX(); 4547 y = ev.getY(); 4548 } 4549 4550 // Due to the touch screen edge effect, a touch closer to the edge 4551 // always snapped to the edge. As getViewWidth() can be different from 4552 // getWidth() due to the scrollbar, adjusting the point to match 4553 // getViewWidth(). Same applied to the height. 4554 if (x > getViewWidth() - 1) { 4555 x = getViewWidth() - 1; 4556 } 4557 if (y > getViewHeightWithTitle() - 1) { 4558 y = getViewHeightWithTitle() - 1; 4559 } 4560 4561 float fDeltaX = mLastTouchX - x; 4562 float fDeltaY = mLastTouchY - y; 4563 int deltaX = (int) fDeltaX; 4564 int deltaY = (int) fDeltaY; 4565 int contentX = viewToContentX((int) x + mScrollX); 4566 int contentY = viewToContentY((int) y + mScrollY); 4567 4568 switch (action) { 4569 case MotionEvent.ACTION_DOWN: { 4570 mPreventDefault = PREVENT_DEFAULT_NO; 4571 mConfirmMove = false; 4572 if (!mScroller.isFinished()) { 4573 // stop the current scroll animation, but if this is 4574 // the start of a fling, allow it to add to the current 4575 // fling's velocity 4576 mScroller.abortAnimation(); 4577 mTouchMode = TOUCH_DRAG_START_MODE; 4578 mConfirmMove = true; 4579 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 4580 } else if (!inFullScreenMode() && mShiftIsPressed) { 4581 mSelectX = mScrollX + (int) x; 4582 mSelectY = mScrollY + (int) y; 4583 mTouchMode = TOUCH_SELECT_MODE; 4584 if (DebugFlags.WEB_VIEW) { 4585 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 4586 } 4587 nativeMoveSelection(contentX, contentY, false); 4588 mTouchSelection = mExtendSelection = true; 4589 invalidate(); // draw the i-beam instead of the arrow 4590 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4591 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4592 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4593 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4594 } else { 4595 // commit the short press action for the previous tap 4596 doShortPress(); 4597 mTouchMode = TOUCH_INIT_MODE; 4598 mDeferTouchProcess = (!inFullScreenMode() 4599 && mForwardTouchEvents) ? hitFocusedPlugin( 4600 contentX, contentY) : false; 4601 } 4602 } else { // the normal case 4603 mPreviewZoomOnly = false; 4604 mTouchMode = TOUCH_INIT_MODE; 4605 mDeferTouchProcess = (!inFullScreenMode() 4606 && mForwardTouchEvents) ? hitFocusedPlugin( 4607 contentX, contentY) : false; 4608 mWebViewCore.sendMessage( 4609 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4610 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4611 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 4612 (eventTime - mLastTouchUpTime), eventTime); 4613 } 4614 } 4615 // Trigger the link 4616 if (mTouchMode == TOUCH_INIT_MODE 4617 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4618 mPrivateHandler.sendEmptyMessageDelayed( 4619 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 4620 mPrivateHandler.sendEmptyMessageDelayed( 4621 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 4622 if (inFullScreenMode() || mDeferTouchProcess) { 4623 mPreventDefault = PREVENT_DEFAULT_YES; 4624 } else if (mForwardTouchEvents) { 4625 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 4626 } else { 4627 mPreventDefault = PREVENT_DEFAULT_NO; 4628 } 4629 // pass the touch events from UI thread to WebCore thread 4630 if (shouldForwardTouchEvent()) { 4631 TouchEventData ted = new TouchEventData(); 4632 ted.mAction = action; 4633 ted.mX = contentX; 4634 ted.mY = contentY; 4635 ted.mMetaState = ev.getMetaState(); 4636 ted.mReprocess = mDeferTouchProcess; 4637 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4638 if (mDeferTouchProcess) { 4639 // still needs to set them for compute deltaX/Y 4640 mLastTouchX = x; 4641 mLastTouchY = y; 4642 break; 4643 } 4644 if (!inFullScreenMode()) { 4645 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4646 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4647 action, 0), TAP_TIMEOUT); 4648 } 4649 } 4650 } 4651 startTouch(x, y, eventTime); 4652 break; 4653 } 4654 case MotionEvent.ACTION_MOVE: { 4655 boolean firstMove = false; 4656 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 4657 >= mTouchSlopSquare) { 4658 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4659 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4660 mConfirmMove = true; 4661 firstMove = true; 4662 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4663 mTouchMode = TOUCH_INIT_MODE; 4664 } 4665 } 4666 // pass the touch events from UI thread to WebCore thread 4667 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 4668 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 4669 TouchEventData ted = new TouchEventData(); 4670 ted.mAction = action; 4671 ted.mX = contentX; 4672 ted.mY = contentY; 4673 ted.mMetaState = ev.getMetaState(); 4674 ted.mReprocess = mDeferTouchProcess; 4675 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4676 mLastSentTouchTime = eventTime; 4677 if (mDeferTouchProcess) { 4678 break; 4679 } 4680 if (firstMove && !inFullScreenMode()) { 4681 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4682 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4683 action, 0), TAP_TIMEOUT); 4684 } 4685 } 4686 if (mTouchMode == TOUCH_DONE_MODE 4687 || mPreventDefault == PREVENT_DEFAULT_YES) { 4688 // no dragging during scroll zoom animation, or when prevent 4689 // default is yes 4690 break; 4691 } 4692 if (mVelocityTracker == null) { 4693 Log.e(LOGTAG, "Got null mVelocityTracker when " 4694 + "mPreventDefault = " + mPreventDefault 4695 + " mDeferTouchProcess = " + mDeferTouchProcess 4696 + " mTouchMode = " + mTouchMode); 4697 } 4698 mVelocityTracker.addMovement(ev); 4699 if (mTouchMode != TOUCH_DRAG_MODE) { 4700 if (mTouchMode == TOUCH_SELECT_MODE) { 4701 mSelectX = mScrollX + (int) x; 4702 mSelectY = mScrollY + (int) y; 4703 if (DebugFlags.WEB_VIEW) { 4704 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 4705 } 4706 nativeMoveSelection(contentX, contentY, true); 4707 invalidate(); 4708 break; 4709 } 4710 if (!mConfirmMove) { 4711 break; 4712 } 4713 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 4714 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 4715 // track mLastTouchTime as we may need to do fling at 4716 // ACTION_UP 4717 mLastTouchTime = eventTime; 4718 break; 4719 } 4720 // if it starts nearly horizontal or vertical, enforce it 4721 int ax = Math.abs(deltaX); 4722 int ay = Math.abs(deltaY); 4723 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4724 mSnapScrollMode = SNAP_X; 4725 mSnapPositive = deltaX > 0; 4726 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4727 mSnapScrollMode = SNAP_Y; 4728 mSnapPositive = deltaY > 0; 4729 } 4730 4731 mTouchMode = TOUCH_DRAG_MODE; 4732 mLastTouchX = x; 4733 mLastTouchY = y; 4734 fDeltaX = 0.0f; 4735 fDeltaY = 0.0f; 4736 deltaX = 0; 4737 deltaY = 0; 4738 4739 startDrag(); 4740 } 4741 4742 if (mDragTrackerHandler != null) { 4743 mDragTrackerHandler.dragTo(x, y); 4744 } 4745 4746 // do pan 4747 int newScrollX = pinLocX(mScrollX + deltaX); 4748 int newDeltaX = newScrollX - mScrollX; 4749 if (deltaX != newDeltaX) { 4750 deltaX = newDeltaX; 4751 fDeltaX = (float) newDeltaX; 4752 } 4753 int newScrollY = pinLocY(mScrollY + deltaY); 4754 int newDeltaY = newScrollY - mScrollY; 4755 if (deltaY != newDeltaY) { 4756 deltaY = newDeltaY; 4757 fDeltaY = (float) newDeltaY; 4758 } 4759 boolean done = false; 4760 boolean keepScrollBarsVisible = false; 4761 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 4762 keepScrollBarsVisible = done = true; 4763 } else { 4764 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4765 int ax = Math.abs(deltaX); 4766 int ay = Math.abs(deltaY); 4767 if (mSnapScrollMode == SNAP_X) { 4768 // radical change means getting out of snap mode 4769 if (ay > MAX_SLOPE_FOR_DIAG * ax 4770 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4771 mSnapScrollMode = SNAP_NONE; 4772 } 4773 // reverse direction means lock in the snap mode 4774 if (ax > MAX_SLOPE_FOR_DIAG * ay && 4775 (mSnapPositive 4776 ? deltaX < -mMinLockSnapReverseDistance 4777 : deltaX > mMinLockSnapReverseDistance)) { 4778 mSnapScrollMode |= SNAP_LOCK; 4779 } 4780 } else { 4781 // radical change means getting out of snap mode 4782 if (ax > MAX_SLOPE_FOR_DIAG * ay 4783 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4784 mSnapScrollMode = SNAP_NONE; 4785 } 4786 // reverse direction means lock in the snap mode 4787 if (ay > MAX_SLOPE_FOR_DIAG * ax && 4788 (mSnapPositive 4789 ? deltaY < -mMinLockSnapReverseDistance 4790 : deltaY > mMinLockSnapReverseDistance)) { 4791 mSnapScrollMode |= SNAP_LOCK; 4792 } 4793 } 4794 } 4795 if (mSnapScrollMode != SNAP_NONE) { 4796 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 4797 deltaY = 0; 4798 } else { 4799 deltaX = 0; 4800 } 4801 } 4802 if ((deltaX | deltaY) != 0) { 4803 if (deltaX != 0) { 4804 mLastTouchX = x; 4805 } 4806 if (deltaY != 0) { 4807 mLastTouchY = y; 4808 } 4809 mHeldMotionless = MOTIONLESS_FALSE; 4810 } else { 4811 // keep the scrollbar on the screen even there is no 4812 // scroll 4813 keepScrollBarsVisible = true; 4814 } 4815 mLastTouchTime = eventTime; 4816 mUserScroll = true; 4817 } 4818 4819 doDrag(deltaX, deltaY); 4820 4821 if (keepScrollBarsVisible) { 4822 if (mHeldMotionless != MOTIONLESS_TRUE) { 4823 mHeldMotionless = MOTIONLESS_TRUE; 4824 invalidate(); 4825 } 4826 // keep the scrollbar on the screen even there is no scroll 4827 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 4828 false); 4829 // return false to indicate that we can't pan out of the 4830 // view space 4831 return !done; 4832 } 4833 break; 4834 } 4835 case MotionEvent.ACTION_UP: { 4836 // pass the touch events from UI thread to WebCore thread 4837 if (shouldForwardTouchEvent()) { 4838 TouchEventData ted = new TouchEventData(); 4839 ted.mAction = action; 4840 ted.mX = contentX; 4841 ted.mY = contentY; 4842 ted.mMetaState = ev.getMetaState(); 4843 ted.mReprocess = mDeferTouchProcess; 4844 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4845 } 4846 mLastTouchUpTime = eventTime; 4847 switch (mTouchMode) { 4848 case TOUCH_DOUBLE_TAP_MODE: // double tap 4849 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4850 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4851 if (inFullScreenMode() || mDeferTouchProcess) { 4852 TouchEventData ted = new TouchEventData(); 4853 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 4854 ted.mX = contentX; 4855 ted.mY = contentY; 4856 ted.mMetaState = ev.getMetaState(); 4857 ted.mReprocess = mDeferTouchProcess; 4858 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4859 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 4860 doDoubleTap(); 4861 mTouchMode = TOUCH_DONE_MODE; 4862 } 4863 break; 4864 case TOUCH_SELECT_MODE: 4865 commitCopy(); 4866 mTouchSelection = false; 4867 break; 4868 case TOUCH_INIT_MODE: // tap 4869 case TOUCH_SHORTPRESS_START_MODE: 4870 case TOUCH_SHORTPRESS_MODE: 4871 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4872 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4873 if (mConfirmMove) { 4874 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 4875 " WebCore's response for touch down."); 4876 if (mPreventDefault != PREVENT_DEFAULT_YES 4877 && (computeMaxScrollX() > 0 4878 || computeMaxScrollY() > 0)) { 4879 // UI takes control back, cancel WebCore touch 4880 cancelWebCoreTouchEvent(contentX, contentY, 4881 true); 4882 // we will not rewrite drag code here, but we 4883 // will try fling if it applies. 4884 WebViewCore.reducePriority(); 4885 // to get better performance, pause updating the 4886 // picture 4887 WebViewCore.pauseUpdatePicture(mWebViewCore); 4888 // fall through to TOUCH_DRAG_MODE 4889 } else { 4890 break; 4891 } 4892 } else { 4893 if (mTouchMode == TOUCH_INIT_MODE) { 4894 mPrivateHandler.sendEmptyMessageDelayed( 4895 RELEASE_SINGLE_TAP, ViewConfiguration 4896 .getDoubleTapTimeout()); 4897 } else { 4898 doShortPress(); 4899 } 4900 break; 4901 } 4902 case TOUCH_DRAG_MODE: 4903 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4904 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4905 mHeldMotionless = MOTIONLESS_TRUE; 4906 // redraw in high-quality, as we're done dragging 4907 invalidate(); 4908 // if the user waits a while w/o moving before the 4909 // up, we don't want to do a fling 4910 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4911 if (mVelocityTracker == null) { 4912 Log.e(LOGTAG, "Got null mVelocityTracker when " 4913 + "mPreventDefault = " 4914 + mPreventDefault 4915 + " mDeferTouchProcess = " 4916 + mDeferTouchProcess); 4917 } 4918 mVelocityTracker.addMovement(ev); 4919 doFling(); 4920 break; 4921 } 4922 // fall through 4923 case TOUCH_DRAG_START_MODE: 4924 // TOUCH_DRAG_START_MODE should not happen for the real 4925 // device as we almost certain will get a MOVE. But this 4926 // is possible on emulator. 4927 mLastVelocity = 0; 4928 WebViewCore.resumePriority(); 4929 WebViewCore.resumeUpdatePicture(mWebViewCore); 4930 break; 4931 } 4932 stopTouch(); 4933 break; 4934 } 4935 case MotionEvent.ACTION_CANCEL: { 4936 if (mTouchMode == TOUCH_DRAG_MODE) { 4937 invalidate(); 4938 } 4939 cancelWebCoreTouchEvent(contentX, contentY, false); 4940 cancelTouch(); 4941 break; 4942 } 4943 } 4944 return true; 4945 } 4946 4947 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 4948 if (shouldForwardTouchEvent()) { 4949 if (removeEvents) { 4950 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 4951 } 4952 TouchEventData ted = new TouchEventData(); 4953 ted.mX = x; 4954 ted.mY = y; 4955 ted.mAction = MotionEvent.ACTION_CANCEL; 4956 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4957 mPreventDefault = PREVENT_DEFAULT_IGNORE; 4958 } 4959 } 4960 4961 private void startTouch(float x, float y, long eventTime) { 4962 // Remember where the motion event started 4963 mLastTouchX = x; 4964 mLastTouchY = y; 4965 mLastTouchTime = eventTime; 4966 mVelocityTracker = VelocityTracker.obtain(); 4967 mSnapScrollMode = SNAP_NONE; 4968 if (mDragTracker != null) { 4969 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 4970 } 4971 } 4972 4973 private void startDrag() { 4974 WebViewCore.reducePriority(); 4975 // to get better performance, pause updating the picture 4976 WebViewCore.pauseUpdatePicture(mWebViewCore); 4977 if (!mDragFromTextInput) { 4978 nativeHideCursor(); 4979 } 4980 WebSettings settings = getSettings(); 4981 if (settings.supportZoom() 4982 && settings.getBuiltInZoomControls() 4983 && !getZoomButtonsController().isVisible() 4984 && mMinZoomScale < mMaxZoomScale) { 4985 mZoomButtonsController.setVisible(true); 4986 int count = settings.getDoubleTapToastCount(); 4987 if (mInZoomOverview && count > 0) { 4988 settings.setDoubleTapToastCount(--count); 4989 Toast.makeText(mContext, 4990 com.android.internal.R.string.double_tap_toast, 4991 Toast.LENGTH_LONG).show(); 4992 } 4993 } 4994 } 4995 4996 private void doDrag(int deltaX, int deltaY) { 4997 if ((deltaX | deltaY) != 0) { 4998 scrollBy(deltaX, deltaY); 4999 } 5000 if (!getSettings().getBuiltInZoomControls()) { 5001 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 5002 if (mZoomControls != null && showPlusMinus) { 5003 if (mZoomControls.getVisibility() == View.VISIBLE) { 5004 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5005 } else { 5006 mZoomControls.show(showPlusMinus, false); 5007 } 5008 mPrivateHandler.postDelayed(mZoomControlRunnable, 5009 ZOOM_CONTROLS_TIMEOUT); 5010 } 5011 } 5012 } 5013 5014 private void stopTouch() { 5015 if (mDragTrackerHandler != null) { 5016 mDragTrackerHandler.stopDrag(); 5017 } 5018 // we also use mVelocityTracker == null to tell us that we are 5019 // not "moving around", so we can take the slower/prettier 5020 // mode in the drawing code 5021 if (mVelocityTracker != null) { 5022 mVelocityTracker.recycle(); 5023 mVelocityTracker = null; 5024 } 5025 } 5026 5027 private void cancelTouch() { 5028 if (mDragTrackerHandler != null) { 5029 mDragTrackerHandler.stopDrag(); 5030 } 5031 // we also use mVelocityTracker == null to tell us that we are 5032 // not "moving around", so we can take the slower/prettier 5033 // mode in the drawing code 5034 if (mVelocityTracker != null) { 5035 mVelocityTracker.recycle(); 5036 mVelocityTracker = null; 5037 } 5038 if (mTouchMode == TOUCH_DRAG_MODE) { 5039 WebViewCore.resumePriority(); 5040 WebViewCore.resumeUpdatePicture(mWebViewCore); 5041 } 5042 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5043 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5044 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5045 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5046 mHeldMotionless = MOTIONLESS_TRUE; 5047 mTouchMode = TOUCH_DONE_MODE; 5048 nativeHideCursor(); 5049 } 5050 5051 private long mTrackballFirstTime = 0; 5052 private long mTrackballLastTime = 0; 5053 private float mTrackballRemainsX = 0.0f; 5054 private float mTrackballRemainsY = 0.0f; 5055 private int mTrackballXMove = 0; 5056 private int mTrackballYMove = 0; 5057 private boolean mExtendSelection = false; 5058 private boolean mTouchSelection = false; 5059 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5060 private static final int TRACKBALL_TIMEOUT = 200; 5061 private static final int TRACKBALL_WAIT = 100; 5062 private static final int TRACKBALL_SCALE = 400; 5063 private static final int TRACKBALL_SCROLL_COUNT = 5; 5064 private static final int TRACKBALL_MOVE_COUNT = 10; 5065 private static final int TRACKBALL_MULTIPLIER = 3; 5066 private static final int SELECT_CURSOR_OFFSET = 16; 5067 private int mSelectX = 0; 5068 private int mSelectY = 0; 5069 private boolean mFocusSizeChanged = false; 5070 private boolean mShiftIsPressed = false; 5071 private boolean mTrackballDown = false; 5072 private long mTrackballUpTime = 0; 5073 private long mLastCursorTime = 0; 5074 private Rect mLastCursorBounds; 5075 5076 // Set by default; BrowserActivity clears to interpret trackball data 5077 // directly for movement. Currently, the framework only passes 5078 // arrow key events, not trackball events, from one child to the next 5079 private boolean mMapTrackballToArrowKeys = true; 5080 5081 public void setMapTrackballToArrowKeys(boolean setMap) { 5082 mMapTrackballToArrowKeys = setMap; 5083 } 5084 5085 void resetTrackballTime() { 5086 mTrackballLastTime = 0; 5087 } 5088 5089 @Override 5090 public boolean onTrackballEvent(MotionEvent ev) { 5091 long time = ev.getEventTime(); 5092 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5093 if (ev.getY() > 0) pageDown(true); 5094 if (ev.getY() < 0) pageUp(true); 5095 return true; 5096 } 5097 boolean shiftPressed = mShiftIsPressed && (mNativeClass == 0 5098 || !nativeFocusIsPlugin()); 5099 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5100 if (shiftPressed) { 5101 return true; // discard press if copy in progress 5102 } 5103 mTrackballDown = true; 5104 if (mNativeClass == 0) { 5105 return false; 5106 } 5107 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5108 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5109 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5110 nativeSelectBestAt(mLastCursorBounds); 5111 } 5112 if (DebugFlags.WEB_VIEW) { 5113 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5114 + " time=" + time 5115 + " mLastCursorTime=" + mLastCursorTime); 5116 } 5117 if (isInTouchMode()) requestFocusFromTouch(); 5118 return false; // let common code in onKeyDown at it 5119 } 5120 if (ev.getAction() == MotionEvent.ACTION_UP) { 5121 // LONG_PRESS_CENTER is set in common onKeyDown 5122 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5123 mTrackballDown = false; 5124 mTrackballUpTime = time; 5125 if (shiftPressed) { 5126 if (mExtendSelection) { 5127 commitCopy(); 5128 } else { 5129 mExtendSelection = true; 5130 invalidate(); // draw the i-beam instead of the arrow 5131 } 5132 return true; // discard press if copy in progress 5133 } 5134 if (DebugFlags.WEB_VIEW) { 5135 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5136 + " time=" + time 5137 ); 5138 } 5139 return false; // let common code in onKeyUp at it 5140 } 5141 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 5142 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5143 return false; 5144 } 5145 if (mTrackballDown) { 5146 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5147 return true; // discard move if trackball is down 5148 } 5149 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5150 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5151 return true; 5152 } 5153 // TODO: alternatively we can do panning as touch does 5154 switchOutDrawHistory(); 5155 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5156 if (DebugFlags.WEB_VIEW) { 5157 Log.v(LOGTAG, "onTrackballEvent time=" 5158 + time + " last=" + mTrackballLastTime); 5159 } 5160 mTrackballFirstTime = time; 5161 mTrackballXMove = mTrackballYMove = 0; 5162 } 5163 mTrackballLastTime = time; 5164 if (DebugFlags.WEB_VIEW) { 5165 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5166 } 5167 mTrackballRemainsX += ev.getX(); 5168 mTrackballRemainsY += ev.getY(); 5169 doTrackball(time); 5170 return true; 5171 } 5172 5173 void moveSelection(float xRate, float yRate) { 5174 if (mNativeClass == 0) 5175 return; 5176 int width = getViewWidth(); 5177 int height = getViewHeight(); 5178 mSelectX += xRate; 5179 mSelectY += yRate; 5180 int maxX = width + mScrollX; 5181 int maxY = height + mScrollY; 5182 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5183 , mSelectX)); 5184 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5185 , mSelectY)); 5186 if (DebugFlags.WEB_VIEW) { 5187 Log.v(LOGTAG, "moveSelection" 5188 + " mSelectX=" + mSelectX 5189 + " mSelectY=" + mSelectY 5190 + " mScrollX=" + mScrollX 5191 + " mScrollY=" + mScrollY 5192 + " xRate=" + xRate 5193 + " yRate=" + yRate 5194 ); 5195 } 5196 nativeMoveSelection(viewToContentX(mSelectX), 5197 viewToContentY(mSelectY), mExtendSelection); 5198 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5199 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5200 : 0; 5201 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5202 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5203 : 0; 5204 pinScrollBy(scrollX, scrollY, true, 0); 5205 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5206 requestRectangleOnScreen(select); 5207 invalidate(); 5208 } 5209 5210 private int scaleTrackballX(float xRate, int width) { 5211 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5212 int nextXMove = xMove; 5213 if (xMove > 0) { 5214 if (xMove > mTrackballXMove) { 5215 xMove -= mTrackballXMove; 5216 } 5217 } else if (xMove < mTrackballXMove) { 5218 xMove -= mTrackballXMove; 5219 } 5220 mTrackballXMove = nextXMove; 5221 return xMove; 5222 } 5223 5224 private int scaleTrackballY(float yRate, int height) { 5225 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5226 int nextYMove = yMove; 5227 if (yMove > 0) { 5228 if (yMove > mTrackballYMove) { 5229 yMove -= mTrackballYMove; 5230 } 5231 } else if (yMove < mTrackballYMove) { 5232 yMove -= mTrackballYMove; 5233 } 5234 mTrackballYMove = nextYMove; 5235 return yMove; 5236 } 5237 5238 private int keyCodeToSoundsEffect(int keyCode) { 5239 switch(keyCode) { 5240 case KeyEvent.KEYCODE_DPAD_UP: 5241 return SoundEffectConstants.NAVIGATION_UP; 5242 case KeyEvent.KEYCODE_DPAD_RIGHT: 5243 return SoundEffectConstants.NAVIGATION_RIGHT; 5244 case KeyEvent.KEYCODE_DPAD_DOWN: 5245 return SoundEffectConstants.NAVIGATION_DOWN; 5246 case KeyEvent.KEYCODE_DPAD_LEFT: 5247 return SoundEffectConstants.NAVIGATION_LEFT; 5248 } 5249 throw new IllegalArgumentException("keyCode must be one of " + 5250 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5251 "KEYCODE_DPAD_LEFT}."); 5252 } 5253 5254 private void doTrackball(long time) { 5255 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5256 if (elapsed == 0) { 5257 elapsed = TRACKBALL_TIMEOUT; 5258 } 5259 float xRate = mTrackballRemainsX * 1000 / elapsed; 5260 float yRate = mTrackballRemainsY * 1000 / elapsed; 5261 int viewWidth = getViewWidth(); 5262 int viewHeight = getViewHeight(); 5263 if (mShiftIsPressed && (mNativeClass == 0 || !nativeFocusIsPlugin())) { 5264 moveSelection(scaleTrackballX(xRate, viewWidth), 5265 scaleTrackballY(yRate, viewHeight)); 5266 mTrackballRemainsX = mTrackballRemainsY = 0; 5267 return; 5268 } 5269 float ax = Math.abs(xRate); 5270 float ay = Math.abs(yRate); 5271 float maxA = Math.max(ax, ay); 5272 if (DebugFlags.WEB_VIEW) { 5273 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5274 + " xRate=" + xRate 5275 + " yRate=" + yRate 5276 + " mTrackballRemainsX=" + mTrackballRemainsX 5277 + " mTrackballRemainsY=" + mTrackballRemainsY); 5278 } 5279 int width = mContentWidth - viewWidth; 5280 int height = mContentHeight - viewHeight; 5281 if (width < 0) width = 0; 5282 if (height < 0) height = 0; 5283 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5284 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5285 maxA = Math.max(ax, ay); 5286 int count = Math.max(0, (int) maxA); 5287 int oldScrollX = mScrollX; 5288 int oldScrollY = mScrollY; 5289 if (count > 0) { 5290 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5291 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5292 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5293 KeyEvent.KEYCODE_DPAD_RIGHT; 5294 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5295 if (DebugFlags.WEB_VIEW) { 5296 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5297 + " count=" + count 5298 + " mTrackballRemainsX=" + mTrackballRemainsX 5299 + " mTrackballRemainsY=" + mTrackballRemainsY); 5300 } 5301 if (mNativeClass != 0 && nativeFocusIsPlugin()) { 5302 for (int i = 0; i < count; i++) { 5303 letPluginHandleNavKey(selectKeyCode, time, true); 5304 } 5305 letPluginHandleNavKey(selectKeyCode, time, false); 5306 } else if (navHandledKey(selectKeyCode, count, false, time)) { 5307 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5308 } 5309 mTrackballRemainsX = mTrackballRemainsY = 0; 5310 } 5311 if (count >= TRACKBALL_SCROLL_COUNT) { 5312 int xMove = scaleTrackballX(xRate, width); 5313 int yMove = scaleTrackballY(yRate, height); 5314 if (DebugFlags.WEB_VIEW) { 5315 Log.v(LOGTAG, "doTrackball pinScrollBy" 5316 + " count=" + count 5317 + " xMove=" + xMove + " yMove=" + yMove 5318 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5319 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5320 ); 5321 } 5322 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5323 xMove = 0; 5324 } 5325 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5326 yMove = 0; 5327 } 5328 if (xMove != 0 || yMove != 0) { 5329 pinScrollBy(xMove, yMove, true, 0); 5330 } 5331 mUserScroll = true; 5332 } 5333 } 5334 5335 private int computeMaxScrollX() { 5336 return Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5337 } 5338 5339 private int computeMaxScrollY() { 5340 return Math.max(computeVerticalScrollRange() + getTitleHeight() 5341 - getViewHeightWithTitle(), 0); 5342 } 5343 5344 public void flingScroll(int vx, int vy) { 5345 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 5346 computeMaxScrollY()); 5347 invalidate(); 5348 } 5349 5350 private void doFling() { 5351 if (mVelocityTracker == null) { 5352 return; 5353 } 5354 int maxX = computeMaxScrollX(); 5355 int maxY = computeMaxScrollY(); 5356 5357 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5358 int vx = (int) mVelocityTracker.getXVelocity(); 5359 int vy = (int) mVelocityTracker.getYVelocity(); 5360 5361 if (mSnapScrollMode != SNAP_NONE) { 5362 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5363 vy = 0; 5364 } else { 5365 vx = 0; 5366 } 5367 } 5368 if (true /* EMG release: make our fling more like Maps' */) { 5369 // maps cuts their velocity in half 5370 vx = vx * 3 / 4; 5371 vy = vy * 3 / 4; 5372 } 5373 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5374 WebViewCore.resumePriority(); 5375 WebViewCore.resumeUpdatePicture(mWebViewCore); 5376 return; 5377 } 5378 float currentVelocity = mScroller.getCurrVelocity(); 5379 if (mLastVelocity > 0 && currentVelocity > 0) { 5380 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5381 - Math.atan2(vy, vx))); 5382 final float circle = (float) (Math.PI) * 2.0f; 5383 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5384 vx += currentVelocity * mLastVelX / mLastVelocity; 5385 vy += currentVelocity * mLastVelY / mLastVelocity; 5386 if (DebugFlags.WEB_VIEW) { 5387 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5388 } 5389 } else if (DebugFlags.WEB_VIEW) { 5390 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5391 } 5392 } else if (DebugFlags.WEB_VIEW) { 5393 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5394 + " current=" + currentVelocity 5395 + " vx=" + vx + " vy=" + vy 5396 + " maxX=" + maxX + " maxY=" + maxY 5397 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5398 } 5399 mLastVelX = vx; 5400 mLastVelY = vy; 5401 mLastVelocity = (float) Math.hypot(vx, vy); 5402 5403 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 5404 // TODO: duration is calculated based on velocity, if the range is 5405 // small, the animation will stop before duration is up. We may 5406 // want to calculate how long the animation is going to run to precisely 5407 // resume the webcore update. 5408 final int time = mScroller.getDuration(); 5409 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5410 awakenScrollBars(time); 5411 invalidate(); 5412 } 5413 5414 private boolean zoomWithPreview(float scale, boolean updateTextWrapScale) { 5415 float oldScale = mActualScale; 5416 mInitialScrollX = mScrollX; 5417 mInitialScrollY = mScrollY; 5418 5419 // snap to DEFAULT_SCALE if it is close 5420 if (Math.abs(scale - mDefaultScale) < MINIMUM_SCALE_INCREMENT) { 5421 scale = mDefaultScale; 5422 } 5423 5424 setNewZoomScale(scale, updateTextWrapScale, false); 5425 5426 if (oldScale != mActualScale) { 5427 // use mZoomPickerScale to see zoom preview first 5428 mZoomStart = SystemClock.uptimeMillis(); 5429 mInvInitialZoomScale = 1.0f / oldScale; 5430 mInvFinalZoomScale = 1.0f / mActualScale; 5431 mZoomScale = mActualScale; 5432 WebViewCore.pauseUpdatePicture(mWebViewCore); 5433 invalidate(); 5434 return true; 5435 } else { 5436 return false; 5437 } 5438 } 5439 5440 /** 5441 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5442 * in charge of installing this view to the view hierarchy. This view will 5443 * become visible when the user starts scrolling via touch and fade away if 5444 * the user does not interact with it. 5445 * <p/> 5446 * API version 3 introduces a built-in zoom mechanism that is shown 5447 * automatically by the MapView. This is the preferred approach for 5448 * showing the zoom UI. 5449 * 5450 * @deprecated The built-in zoom mechanism is preferred, see 5451 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5452 */ 5453 @Deprecated 5454 public View getZoomControls() { 5455 if (!getSettings().supportZoom()) { 5456 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5457 return null; 5458 } 5459 if (mZoomControls == null) { 5460 mZoomControls = createZoomControls(); 5461 5462 /* 5463 * need to be set to VISIBLE first so that getMeasuredHeight() in 5464 * {@link #onSizeChanged()} can return the measured value for proper 5465 * layout. 5466 */ 5467 mZoomControls.setVisibility(View.VISIBLE); 5468 mZoomControlRunnable = new Runnable() { 5469 public void run() { 5470 5471 /* Don't dismiss the controls if the user has 5472 * focus on them. Wait and check again later. 5473 */ 5474 if (!mZoomControls.hasFocus()) { 5475 mZoomControls.hide(); 5476 } else { 5477 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5478 mPrivateHandler.postDelayed(mZoomControlRunnable, 5479 ZOOM_CONTROLS_TIMEOUT); 5480 } 5481 } 5482 }; 5483 } 5484 return mZoomControls; 5485 } 5486 5487 private ExtendedZoomControls createZoomControls() { 5488 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 5489 , null); 5490 zoomControls.setOnZoomInClickListener(new OnClickListener() { 5491 public void onClick(View v) { 5492 // reset time out 5493 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5494 mPrivateHandler.postDelayed(mZoomControlRunnable, 5495 ZOOM_CONTROLS_TIMEOUT); 5496 zoomIn(); 5497 } 5498 }); 5499 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 5500 public void onClick(View v) { 5501 // reset time out 5502 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5503 mPrivateHandler.postDelayed(mZoomControlRunnable, 5504 ZOOM_CONTROLS_TIMEOUT); 5505 zoomOut(); 5506 } 5507 }); 5508 return zoomControls; 5509 } 5510 5511 /** 5512 * Gets the {@link ZoomButtonsController} which can be used to add 5513 * additional buttons to the zoom controls window. 5514 * 5515 * @return The instance of {@link ZoomButtonsController} used by this class, 5516 * or null if it is unavailable. 5517 * @hide 5518 */ 5519 public ZoomButtonsController getZoomButtonsController() { 5520 if (mZoomButtonsController == null) { 5521 mZoomButtonsController = new ZoomButtonsController(this); 5522 mZoomButtonsController.setOnZoomListener(mZoomListener); 5523 // ZoomButtonsController positions the buttons at the bottom, but in 5524 // the middle. Change their layout parameters so they appear on the 5525 // right. 5526 View controls = mZoomButtonsController.getZoomControls(); 5527 ViewGroup.LayoutParams params = controls.getLayoutParams(); 5528 if (params instanceof FrameLayout.LayoutParams) { 5529 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) params; 5530 frameParams.gravity = Gravity.RIGHT; 5531 } 5532 } 5533 return mZoomButtonsController; 5534 } 5535 5536 /** 5537 * Perform zoom in in the webview 5538 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 5539 */ 5540 public boolean zoomIn() { 5541 // TODO: alternatively we can disallow this during draw history mode 5542 switchOutDrawHistory(); 5543 mInZoomOverview = false; 5544 // Center zooming to the center of the screen. 5545 mZoomCenterX = getViewWidth() * .5f; 5546 mZoomCenterY = getViewHeight() * .5f; 5547 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5548 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5549 return zoomWithPreview(mActualScale * 1.25f, true); 5550 } 5551 5552 /** 5553 * Perform zoom out in the webview 5554 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 5555 */ 5556 public boolean zoomOut() { 5557 // TODO: alternatively we can disallow this during draw history mode 5558 switchOutDrawHistory(); 5559 // Center zooming to the center of the screen. 5560 mZoomCenterX = getViewWidth() * .5f; 5561 mZoomCenterY = getViewHeight() * .5f; 5562 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5563 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5564 return zoomWithPreview(mActualScale * 0.8f, true); 5565 } 5566 5567 private void updateSelection() { 5568 if (mNativeClass == 0) { 5569 return; 5570 } 5571 // mLastTouchX and mLastTouchY are the point in the current viewport 5572 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5573 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5574 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 5575 contentX + mNavSlop, contentY + mNavSlop); 5576 nativeSelectBestAt(rect); 5577 } 5578 5579 /** 5580 * Scroll the focused text field/area to match the WebTextView 5581 * @param xPercent New x position of the WebTextView from 0 to 1. 5582 * @param y New y position of the WebTextView in view coordinates 5583 */ 5584 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 5585 if (!inEditingMode() || mWebViewCore == null) { 5586 return; 5587 } 5588 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 5589 // Since this position is relative to the top of the text input 5590 // field, we do not need to take the title bar's height into 5591 // consideration. 5592 viewToContentDimension(y), 5593 new Float(xPercent)); 5594 } 5595 5596 /** 5597 * Set our starting point and time for a drag from the WebTextView. 5598 */ 5599 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 5600 if (!inEditingMode()) { 5601 return; 5602 } 5603 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 5604 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 5605 mLastTouchTime = eventTime; 5606 if (!mScroller.isFinished()) { 5607 abortAnimation(); 5608 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5609 } 5610 mSnapScrollMode = SNAP_NONE; 5611 mVelocityTracker = VelocityTracker.obtain(); 5612 mTouchMode = TOUCH_DRAG_START_MODE; 5613 } 5614 5615 /** 5616 * Given a motion event from the WebTextView, set its location to our 5617 * coordinates, and handle the event. 5618 */ 5619 /*package*/ boolean textFieldDrag(MotionEvent event) { 5620 if (!inEditingMode()) { 5621 return false; 5622 } 5623 mDragFromTextInput = true; 5624 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 5625 (float) (mWebTextView.getTop() - mScrollY)); 5626 boolean result = onTouchEvent(event); 5627 mDragFromTextInput = false; 5628 return result; 5629 } 5630 5631 /** 5632 * Due a touch up from a WebTextView. This will be handled by webkit to 5633 * change the selection. 5634 * @param event MotionEvent in the WebTextView's coordinates. 5635 */ 5636 /*package*/ void touchUpOnTextField(MotionEvent event) { 5637 if (!inEditingMode()) { 5638 return; 5639 } 5640 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 5641 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 5642 nativeMotionUp(x, y, mNavSlop); 5643 } 5644 5645 /** 5646 * Called when pressing the center key or trackball on a textfield. 5647 */ 5648 /*package*/ void centerKeyPressOnTextField() { 5649 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 5650 nativeCursorNodePointer()); 5651 } 5652 5653 private void doShortPress() { 5654 if (mNativeClass == 0) { 5655 return; 5656 } 5657 if (mPreventDefault == PREVENT_DEFAULT_YES) { 5658 return; 5659 } 5660 mTouchMode = TOUCH_DONE_MODE; 5661 switchOutDrawHistory(); 5662 // mLastTouchX and mLastTouchY are the point in the current viewport 5663 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5664 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5665 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 5666 WebViewCore.MotionUpData motionUpData = new WebViewCore 5667 .MotionUpData(); 5668 motionUpData.mFrame = nativeCacheHitFramePointer(); 5669 motionUpData.mNode = nativeCacheHitNodePointer(); 5670 motionUpData.mBounds = nativeCacheHitNodeBounds(); 5671 motionUpData.mX = contentX; 5672 motionUpData.mY = contentY; 5673 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 5674 motionUpData); 5675 } else { 5676 doMotionUp(contentX, contentY); 5677 } 5678 } 5679 5680 private void doMotionUp(int contentX, int contentY) { 5681 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 5682 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 5683 } 5684 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 5685 playSoundEffect(SoundEffectConstants.CLICK); 5686 } 5687 } 5688 5689 /* 5690 * Return true if the view (Plugin) is fully visible and maximized inside 5691 * the WebView. 5692 */ 5693 private boolean isPluginFitOnScreen(ViewManager.ChildView view) { 5694 int viewWidth = getViewWidth(); 5695 int viewHeight = getViewHeightWithTitle(); 5696 float scale = Math.min((float) viewWidth / view.width, 5697 (float) viewHeight / view.height); 5698 if (scale < mMinZoomScale) { 5699 scale = mMinZoomScale; 5700 } else if (scale > mMaxZoomScale) { 5701 scale = mMaxZoomScale; 5702 } 5703 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 5704 if (contentToViewX(view.x) >= mScrollX 5705 && contentToViewX(view.x + view.width) <= mScrollX 5706 + viewWidth 5707 && contentToViewY(view.y) >= mScrollY 5708 && contentToViewY(view.y + view.height) <= mScrollY 5709 + viewHeight) { 5710 return true; 5711 } 5712 } 5713 return false; 5714 } 5715 5716 /* 5717 * Maximize and center the rectangle, specified in the document coordinate 5718 * space, inside the WebView. If the zoom doesn't need to be changed, do an 5719 * animated scroll to center it. If the zoom needs to be changed, find the 5720 * zoom center and do a smooth zoom transition. 5721 */ 5722 private void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 5723 int viewWidth = getViewWidth(); 5724 int viewHeight = getViewHeightWithTitle(); 5725 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 5726 / docHeight); 5727 if (scale < mMinZoomScale) { 5728 scale = mMinZoomScale; 5729 } else if (scale > mMaxZoomScale) { 5730 scale = mMaxZoomScale; 5731 } 5732 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 5733 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 5734 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 5735 true, 0); 5736 } else { 5737 float oldScreenX = docX * mActualScale - mScrollX; 5738 float rectViewX = docX * scale; 5739 float rectViewWidth = docWidth * scale; 5740 float newMaxWidth = mContentWidth * scale; 5741 float newScreenX = (viewWidth - rectViewWidth) / 2; 5742 // pin the newX to the WebView 5743 if (newScreenX > rectViewX) { 5744 newScreenX = rectViewX; 5745 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 5746 newScreenX = viewWidth - (newMaxWidth - rectViewX); 5747 } 5748 mZoomCenterX = (oldScreenX * scale - newScreenX * mActualScale) 5749 / (scale - mActualScale); 5750 float oldScreenY = docY * mActualScale + getTitleHeight() 5751 - mScrollY; 5752 float rectViewY = docY * scale + getTitleHeight(); 5753 float rectViewHeight = docHeight * scale; 5754 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 5755 float newScreenY = (viewHeight - rectViewHeight) / 2; 5756 // pin the newY to the WebView 5757 if (newScreenY > rectViewY) { 5758 newScreenY = rectViewY; 5759 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 5760 newScreenY = viewHeight - (newMaxHeight - rectViewY); 5761 } 5762 mZoomCenterY = (oldScreenY * scale - newScreenY * mActualScale) 5763 / (scale - mActualScale); 5764 zoomWithPreview(scale, false); 5765 } 5766 } 5767 5768 void dismissZoomControl() { 5769 if (mWebViewCore == null) { 5770 // maybe called after WebView's destroy(). As we can't get settings, 5771 // just hide zoom control for both styles. 5772 if (mZoomButtonsController != null) { 5773 mZoomButtonsController.setVisible(false); 5774 } 5775 if (mZoomControls != null) { 5776 mZoomControls.hide(); 5777 } 5778 return; 5779 } 5780 WebSettings settings = getSettings(); 5781 if (settings.getBuiltInZoomControls()) { 5782 if (getZoomButtonsController().isVisible()) { 5783 mZoomButtonsController.setVisible(false); 5784 } 5785 } else { 5786 if (mZoomControlRunnable != null) { 5787 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5788 } 5789 if (mZoomControls != null) { 5790 mZoomControls.hide(); 5791 } 5792 } 5793 } 5794 5795 // Rule for double tap: 5796 // 1. if the current scale is not same as the text wrap scale and layout 5797 // algorithm is NARROW_COLUMNS, fit to column; 5798 // 2. if the current state is not overview mode, change to overview mode; 5799 // 3. if the current state is overview mode, change to default scale. 5800 private void doDoubleTap() { 5801 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 5802 return; 5803 } 5804 mZoomCenterX = mLastTouchX; 5805 mZoomCenterY = mLastTouchY; 5806 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5807 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5808 WebSettings settings = getSettings(); 5809 settings.setDoubleTapToastCount(0); 5810 // remove the zoom control after double tap 5811 dismissZoomControl(); 5812 ViewManager.ChildView plugin = mViewManager.hitTest(mAnchorX, mAnchorY); 5813 if (plugin != null) { 5814 if (isPluginFitOnScreen(plugin)) { 5815 mInZoomOverview = true; 5816 // Force the titlebar fully reveal in overview mode 5817 if (mScrollY < getTitleHeight()) mScrollY = 0; 5818 zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth, 5819 true); 5820 } else { 5821 mInZoomOverview = false; 5822 centerFitRect(plugin.x, plugin.y, plugin.width, plugin.height); 5823 } 5824 return; 5825 } 5826 boolean zoomToDefault = false; 5827 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 5828 && (Math.abs(mActualScale - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT)) { 5829 setNewZoomScale(mActualScale, true, true); 5830 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 5831 if (Math.abs(mActualScale - overviewScale) < MINIMUM_SCALE_INCREMENT) { 5832 mInZoomOverview = true; 5833 } 5834 } else if (!mInZoomOverview) { 5835 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 5836 if (Math.abs(mActualScale - newScale) >= MINIMUM_SCALE_INCREMENT) { 5837 mInZoomOverview = true; 5838 // Force the titlebar fully reveal in overview mode 5839 if (mScrollY < getTitleHeight()) mScrollY = 0; 5840 zoomWithPreview(newScale, true); 5841 } else if (Math.abs(mActualScale - mDefaultScale) >= MINIMUM_SCALE_INCREMENT) { 5842 zoomToDefault = true; 5843 } 5844 } else { 5845 zoomToDefault = true; 5846 } 5847 if (zoomToDefault) { 5848 mInZoomOverview = false; 5849 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 5850 if (left != NO_LEFTEDGE) { 5851 // add a 5pt padding to the left edge. 5852 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 5853 - mScrollX; 5854 // Re-calculate the zoom center so that the new scroll x will be 5855 // on the left edge. 5856 if (viewLeft > 0) { 5857 mZoomCenterX = viewLeft * mDefaultScale 5858 / (mDefaultScale - mActualScale); 5859 } else { 5860 scrollBy(viewLeft, 0); 5861 mZoomCenterX = 0; 5862 } 5863 } 5864 zoomWithPreview(mDefaultScale, true); 5865 } 5866 } 5867 5868 // Called by JNI to handle a touch on a node representing an email address, 5869 // address, or phone number 5870 private void overrideLoading(String url) { 5871 mCallbackProxy.uiOverrideUrlLoading(url); 5872 } 5873 5874 @Override 5875 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 5876 boolean result = false; 5877 if (inEditingMode()) { 5878 result = mWebTextView.requestFocus(direction, 5879 previouslyFocusedRect); 5880 } else { 5881 result = super.requestFocus(direction, previouslyFocusedRect); 5882 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 5883 // For cases such as GMail, where we gain focus from a direction, 5884 // we want to move to the first available link. 5885 // FIXME: If there are no visible links, we may not want to 5886 int fakeKeyDirection = 0; 5887 switch(direction) { 5888 case View.FOCUS_UP: 5889 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 5890 break; 5891 case View.FOCUS_DOWN: 5892 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 5893 break; 5894 case View.FOCUS_LEFT: 5895 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 5896 break; 5897 case View.FOCUS_RIGHT: 5898 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 5899 break; 5900 default: 5901 return result; 5902 } 5903 if (mNativeClass != 0 && !nativeHasCursorNode()) { 5904 navHandledKey(fakeKeyDirection, 1, true, 0); 5905 } 5906 } 5907 } 5908 return result; 5909 } 5910 5911 @Override 5912 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5913 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 5914 5915 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5916 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5917 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5918 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5919 5920 int measuredHeight = heightSize; 5921 int measuredWidth = widthSize; 5922 5923 // Grab the content size from WebViewCore. 5924 int contentHeight = contentToViewDimension(mContentHeight); 5925 int contentWidth = contentToViewDimension(mContentWidth); 5926 5927// Log.d(LOGTAG, "------- measure " + heightMode); 5928 5929 if (heightMode != MeasureSpec.EXACTLY) { 5930 mHeightCanMeasure = true; 5931 measuredHeight = contentHeight; 5932 if (heightMode == MeasureSpec.AT_MOST) { 5933 // If we are larger than the AT_MOST height, then our height can 5934 // no longer be measured and we should scroll internally. 5935 if (measuredHeight > heightSize) { 5936 measuredHeight = heightSize; 5937 mHeightCanMeasure = false; 5938 } 5939 } 5940 } else { 5941 mHeightCanMeasure = false; 5942 } 5943 if (mNativeClass != 0) { 5944 nativeSetHeightCanMeasure(mHeightCanMeasure); 5945 } 5946 // For the width, always use the given size unless unspecified. 5947 if (widthMode == MeasureSpec.UNSPECIFIED) { 5948 mWidthCanMeasure = true; 5949 measuredWidth = contentWidth; 5950 } else { 5951 mWidthCanMeasure = false; 5952 } 5953 5954 synchronized (this) { 5955 setMeasuredDimension(measuredWidth, measuredHeight); 5956 } 5957 } 5958 5959 @Override 5960 public boolean requestChildRectangleOnScreen(View child, 5961 Rect rect, 5962 boolean immediate) { 5963 rect.offset(child.getLeft() - child.getScrollX(), 5964 child.getTop() - child.getScrollY()); 5965 5966 Rect content = new Rect(viewToContentX(mScrollX), 5967 viewToContentY(mScrollY), 5968 viewToContentX(mScrollX + getWidth() 5969 - getVerticalScrollbarWidth()), 5970 viewToContentY(mScrollY + getViewHeightWithTitle())); 5971 content = nativeSubtractLayers(content); 5972 int screenTop = contentToViewY(content.top); 5973 int screenBottom = contentToViewY(content.bottom); 5974 int height = screenBottom - screenTop; 5975 int scrollYDelta = 0; 5976 5977 if (rect.bottom > screenBottom) { 5978 int oneThirdOfScreenHeight = height / 3; 5979 if (rect.height() > 2 * oneThirdOfScreenHeight) { 5980 // If the rectangle is too tall to fit in the bottom two thirds 5981 // of the screen, place it at the top. 5982 scrollYDelta = rect.top - screenTop; 5983 } else { 5984 // If the rectangle will still fit on screen, we want its 5985 // top to be in the top third of the screen. 5986 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 5987 } 5988 } else if (rect.top < screenTop) { 5989 scrollYDelta = rect.top - screenTop; 5990 } 5991 5992 int screenLeft = contentToViewX(content.left); 5993 int screenRight = contentToViewX(content.right); 5994 int width = screenRight - screenLeft; 5995 int scrollXDelta = 0; 5996 5997 if (rect.right > screenRight && rect.left > screenLeft) { 5998 if (rect.width() > width) { 5999 scrollXDelta += (rect.left - screenLeft); 6000 } else { 6001 scrollXDelta += (rect.right - screenRight); 6002 } 6003 } else if (rect.left < screenLeft) { 6004 scrollXDelta -= (screenLeft - rect.left); 6005 } 6006 6007 if ((scrollYDelta | scrollXDelta) != 0) { 6008 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6009 } 6010 6011 return false; 6012 } 6013 6014 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6015 String replace, int newStart, int newEnd) { 6016 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6017 arg.mReplace = replace; 6018 arg.mNewStart = newStart; 6019 arg.mNewEnd = newEnd; 6020 mTextGeneration++; 6021 arg.mTextGeneration = mTextGeneration; 6022 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6023 } 6024 6025 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6026 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6027 arg.mEvent = event; 6028 arg.mCurrentText = currentText; 6029 // Increase our text generation number, and pass it to webcore thread 6030 mTextGeneration++; 6031 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6032 // WebKit's document state is not saved until about to leave the page. 6033 // To make sure the host application, like Browser, has the up to date 6034 // document state when it goes to background, we force to save the 6035 // document state. 6036 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6037 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6038 cursorData(), 1000); 6039 } 6040 6041 /* package */ synchronized WebViewCore getWebViewCore() { 6042 return mWebViewCore; 6043 } 6044 6045 //------------------------------------------------------------------------- 6046 // Methods can be called from a separate thread, like WebViewCore 6047 // If it needs to call the View system, it has to send message. 6048 //------------------------------------------------------------------------- 6049 6050 /** 6051 * General handler to receive message coming from webkit thread 6052 */ 6053 class PrivateHandler extends Handler { 6054 @Override 6055 public void handleMessage(Message msg) { 6056 // exclude INVAL_RECT_MSG_ID since it is frequently output 6057 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6058 if (msg.what >= FIRST_PRIVATE_MSG_ID 6059 && msg.what <= LAST_PRIVATE_MSG_ID) { 6060 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6061 - FIRST_PRIVATE_MSG_ID]); 6062 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6063 && msg.what <= LAST_PACKAGE_MSG_ID) { 6064 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6065 - FIRST_PACKAGE_MSG_ID]); 6066 } else { 6067 Log.v(LOGTAG, Integer.toString(msg.what)); 6068 } 6069 } 6070 if (mWebViewCore == null) { 6071 // after WebView's destroy() is called, skip handling messages. 6072 return; 6073 } 6074 switch (msg.what) { 6075 case REMEMBER_PASSWORD: { 6076 mDatabase.setUsernamePassword( 6077 msg.getData().getString("host"), 6078 msg.getData().getString("username"), 6079 msg.getData().getString("password")); 6080 ((Message) msg.obj).sendToTarget(); 6081 break; 6082 } 6083 case NEVER_REMEMBER_PASSWORD: { 6084 mDatabase.setUsernamePassword( 6085 msg.getData().getString("host"), null, null); 6086 ((Message) msg.obj).sendToTarget(); 6087 break; 6088 } 6089 case PREVENT_DEFAULT_TIMEOUT: { 6090 // if timeout happens, cancel it so that it won't block UI 6091 // to continue handling touch events 6092 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6093 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6094 || (msg.arg1 == MotionEvent.ACTION_MOVE 6095 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6096 cancelWebCoreTouchEvent( 6097 viewToContentX((int) mLastTouchX + mScrollX), 6098 viewToContentY((int) mLastTouchY + mScrollY), 6099 true); 6100 } 6101 break; 6102 } 6103 case SWITCH_TO_SHORTPRESS: { 6104 if (mTouchMode == TOUCH_INIT_MODE) { 6105 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6106 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6107 updateSelection(); 6108 } else { 6109 // set to TOUCH_SHORTPRESS_MODE so that it won't 6110 // trigger double tap any more 6111 mTouchMode = TOUCH_SHORTPRESS_MODE; 6112 } 6113 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6114 mTouchMode = TOUCH_DONE_MODE; 6115 } 6116 break; 6117 } 6118 case SWITCH_TO_LONGPRESS: { 6119 if (inFullScreenMode() || mDeferTouchProcess) { 6120 TouchEventData ted = new TouchEventData(); 6121 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6122 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 6123 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 6124 // metaState for long press is tricky. Should it be the 6125 // state when the press started or when the press was 6126 // released? Or some intermediary key state? For 6127 // simplicity for now, we don't set it. 6128 ted.mMetaState = 0; 6129 ted.mReprocess = mDeferTouchProcess; 6130 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6131 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6132 mTouchMode = TOUCH_DONE_MODE; 6133 performLongClick(); 6134 rebuildWebTextView(); 6135 } 6136 break; 6137 } 6138 case RELEASE_SINGLE_TAP: { 6139 doShortPress(); 6140 break; 6141 } 6142 case SCROLL_BY_MSG_ID: 6143 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6144 break; 6145 case SYNC_SCROLL_TO_MSG_ID: 6146 if (mUserScroll) { 6147 // if user has scrolled explicitly, don't sync the 6148 // scroll position any more 6149 mUserScroll = false; 6150 break; 6151 } 6152 // fall through 6153 case SCROLL_TO_MSG_ID: 6154 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6155 // if we can't scroll to the exact position due to pin, 6156 // send a message to WebCore to re-scroll when we get a 6157 // new picture 6158 mUserScroll = false; 6159 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6160 msg.arg1, msg.arg2); 6161 } 6162 break; 6163 case SPAWN_SCROLL_TO_MSG_ID: 6164 spawnContentScrollTo(msg.arg1, msg.arg2); 6165 break; 6166 case UPDATE_ZOOM_RANGE: { 6167 WebViewCore.RestoreState restoreState 6168 = (WebViewCore.RestoreState) msg.obj; 6169 // mScrollX contains the new minPrefWidth 6170 updateZoomRange(restoreState, getViewWidth(), 6171 restoreState.mScrollX, false); 6172 break; 6173 } 6174 case NEW_PICTURE_MSG_ID: { 6175 // If we've previously delayed deleting a root 6176 // layer, do it now. 6177 if (mDelayedDeleteRootLayer) { 6178 mDelayedDeleteRootLayer = false; 6179 nativeSetRootLayer(0); 6180 } 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 REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 6309 displaySoftKeyboard(true); 6310 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6311 (WebViewCore.TextSelectionData) msg.obj); 6312 break; 6313 case UPDATE_TEXT_SELECTION_MSG_ID: 6314 // If no textfield was in focus, and the user touched one, 6315 // causing it to send this message, then WebTextView has not 6316 // been set up yet. Rebuild it so it can set its selection. 6317 rebuildWebTextView(); 6318 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6319 (WebViewCore.TextSelectionData) msg.obj); 6320 break; 6321 case RETURN_LABEL: 6322 if (inEditingMode() 6323 && mWebTextView.isSameTextField(msg.arg1)) { 6324 mWebTextView.setHint((String) msg.obj); 6325 InputMethodManager imm 6326 = InputMethodManager.peekInstance(); 6327 // The hint is propagated to the IME in 6328 // onCreateInputConnection. If the IME is already 6329 // active, restart it so that its hint text is updated. 6330 if (imm != null && imm.isActive(mWebTextView)) { 6331 imm.restartInput(mWebTextView); 6332 } 6333 } 6334 break; 6335 case MOVE_OUT_OF_PLUGIN: 6336 navHandledKey(msg.arg1, 1, false, 0); 6337 break; 6338 case UPDATE_TEXT_ENTRY_MSG_ID: 6339 // this is sent after finishing resize in WebViewCore. Make 6340 // sure the text edit box is still on the screen. 6341 if (inEditingMode() && nativeCursorIsTextInput()) { 6342 mWebTextView.bringIntoView(); 6343 rebuildWebTextView(); 6344 } 6345 break; 6346 case CLEAR_TEXT_ENTRY: 6347 clearTextEntry(false); 6348 break; 6349 case INVAL_RECT_MSG_ID: { 6350 Rect r = (Rect)msg.obj; 6351 if (r == null) { 6352 invalidate(); 6353 } else { 6354 // we need to scale r from content into view coords, 6355 // which viewInvalidate() does for us 6356 viewInvalidate(r.left, r.top, r.right, r.bottom); 6357 } 6358 break; 6359 } 6360 case IMMEDIATE_REPAINT_MSG_ID: { 6361 invalidate(); 6362 break; 6363 } 6364 case SET_ROOT_LAYER_MSG_ID: { 6365 if (0 == msg.arg1) { 6366 // Null indicates deleting the old layer, but 6367 // don't actually do so until we've got the 6368 // new page to display. 6369 mDelayedDeleteRootLayer = true; 6370 } else { 6371 mDelayedDeleteRootLayer = false; 6372 nativeSetRootLayer(msg.arg1); 6373 invalidate(); 6374 } 6375 break; 6376 } 6377 case REQUEST_FORM_DATA: 6378 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6379 if (mWebTextView.isSameTextField(msg.arg1)) { 6380 mWebTextView.setAdapterCustom(adapter); 6381 } 6382 break; 6383 case RESUME_WEBCORE_PRIORITY: 6384 WebViewCore.resumePriority(); 6385 WebViewCore.resumeUpdatePicture(mWebViewCore); 6386 break; 6387 6388 case LONG_PRESS_CENTER: 6389 // as this is shared by keydown and trackballdown, reset all 6390 // the states 6391 mGotCenterDown = false; 6392 mTrackballDown = false; 6393 performLongClick(); 6394 break; 6395 6396 case WEBCORE_NEED_TOUCH_EVENTS: 6397 mForwardTouchEvents = (msg.arg1 != 0); 6398 break; 6399 6400 case PREVENT_TOUCH_ID: 6401 if (inFullScreenMode()) { 6402 break; 6403 } 6404 if (msg.obj == null) { 6405 if (msg.arg1 == MotionEvent.ACTION_DOWN 6406 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 6407 // if prevent default is called from WebCore, UI 6408 // will not handle the rest of the touch events any 6409 // more. 6410 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6411 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 6412 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 6413 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6414 // the return for the first ACTION_MOVE will decide 6415 // whether UI will handle touch or not. Currently no 6416 // support for alternating prevent default 6417 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6418 : PREVENT_DEFAULT_NO; 6419 } 6420 } else if (msg.arg2 == 0) { 6421 // prevent default is not called in WebCore, so the 6422 // message needs to be reprocessed in UI 6423 TouchEventData ted = (TouchEventData) msg.obj; 6424 switch (ted.mAction) { 6425 case MotionEvent.ACTION_DOWN: 6426 mLastDeferTouchX = contentToViewX(ted.mX) 6427 - mScrollX; 6428 mLastDeferTouchY = contentToViewY(ted.mY) 6429 - mScrollY; 6430 mDeferTouchMode = TOUCH_INIT_MODE; 6431 break; 6432 case MotionEvent.ACTION_MOVE: { 6433 // no snapping in defer process 6434 int x = contentToViewX(ted.mX) - mScrollX; 6435 int y = contentToViewY(ted.mY) - mScrollY; 6436 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 6437 mDeferTouchMode = TOUCH_DRAG_MODE; 6438 mLastDeferTouchX = x; 6439 mLastDeferTouchY = y; 6440 startDrag(); 6441 } 6442 int deltaX = pinLocX((int) (mScrollX 6443 + mLastDeferTouchX - x)) 6444 - mScrollX; 6445 int deltaY = pinLocY((int) (mScrollY 6446 + mLastDeferTouchY - y)) 6447 - mScrollY; 6448 doDrag(deltaX, deltaY); 6449 if (deltaX != 0) mLastDeferTouchX = x; 6450 if (deltaY != 0) mLastDeferTouchY = y; 6451 break; 6452 } 6453 case MotionEvent.ACTION_UP: 6454 case MotionEvent.ACTION_CANCEL: 6455 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 6456 // no fling in defer process 6457 WebViewCore.resumePriority(); 6458 } 6459 mDeferTouchMode = TOUCH_DONE_MODE; 6460 break; 6461 case WebViewCore.ACTION_DOUBLETAP: 6462 // doDoubleTap() needs mLastTouchX/Y as anchor 6463 mLastTouchX = contentToViewX(ted.mX) - mScrollX; 6464 mLastTouchY = contentToViewY(ted.mY) - mScrollY; 6465 doDoubleTap(); 6466 mDeferTouchMode = TOUCH_DONE_MODE; 6467 break; 6468 case WebViewCore.ACTION_LONGPRESS: 6469 HitTestResult hitTest = getHitTestResult(); 6470 if (hitTest != null && hitTest.mType 6471 != HitTestResult.UNKNOWN_TYPE) { 6472 performLongClick(); 6473 rebuildWebTextView(); 6474 } 6475 mDeferTouchMode = TOUCH_DONE_MODE; 6476 break; 6477 } 6478 } 6479 break; 6480 6481 case REQUEST_KEYBOARD: 6482 if (msg.arg1 == 0) { 6483 hideSoftKeyboard(); 6484 } else { 6485 displaySoftKeyboard(false); 6486 } 6487 break; 6488 6489 case FIND_AGAIN: 6490 // Ignore if find has been dismissed. 6491 if (mFindIsUp) { 6492 findAll(mLastFind); 6493 } 6494 break; 6495 6496 case DRAG_HELD_MOTIONLESS: 6497 mHeldMotionless = MOTIONLESS_TRUE; 6498 invalidate(); 6499 // fall through to keep scrollbars awake 6500 6501 case AWAKEN_SCROLL_BARS: 6502 if (mTouchMode == TOUCH_DRAG_MODE 6503 && mHeldMotionless == MOTIONLESS_TRUE) { 6504 awakenScrollBars(ViewConfiguration 6505 .getScrollDefaultDelay(), false); 6506 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6507 .obtainMessage(AWAKEN_SCROLL_BARS), 6508 ViewConfiguration.getScrollDefaultDelay()); 6509 } 6510 break; 6511 6512 case DO_MOTION_UP: 6513 doMotionUp(msg.arg1, msg.arg2); 6514 break; 6515 6516 case SHOW_FULLSCREEN: { 6517 View view = (View) msg.obj; 6518 int npp = msg.arg1; 6519 6520 if (mFullScreenHolder != null) { 6521 Log.w(LOGTAG, "Should not have another full screen."); 6522 mFullScreenHolder.dismiss(); 6523 } 6524 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 6525 mFullScreenHolder.setContentView(view); 6526 mFullScreenHolder.setCancelable(false); 6527 mFullScreenHolder.setCanceledOnTouchOutside(false); 6528 mFullScreenHolder.show(); 6529 6530 break; 6531 } 6532 case HIDE_FULLSCREEN: 6533 if (inFullScreenMode()) { 6534 mFullScreenHolder.dismiss(); 6535 mFullScreenHolder = null; 6536 } 6537 break; 6538 6539 case DOM_FOCUS_CHANGED: 6540 if (inEditingMode()) { 6541 nativeClearCursor(); 6542 rebuildWebTextView(); 6543 } 6544 break; 6545 6546 case SHOW_RECT_MSG_ID: { 6547 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6548 int x = mScrollX; 6549 int left = contentToViewX(data.mLeft); 6550 int width = contentToViewDimension(data.mWidth); 6551 int maxWidth = contentToViewDimension(data.mContentWidth); 6552 int viewWidth = getViewWidth(); 6553 if (width < viewWidth) { 6554 // center align 6555 x += left + width / 2 - mScrollX - viewWidth / 2; 6556 } else { 6557 x += (int) (left + data.mXPercentInDoc * width 6558 - mScrollX - data.mXPercentInView * viewWidth); 6559 } 6560 if (DebugFlags.WEB_VIEW) { 6561 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6562 width + ",maxWidth=" + maxWidth + 6563 ",viewWidth=" + viewWidth + ",x=" 6564 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6565 ",xPercentInView=" + data.mXPercentInView+ ")"); 6566 } 6567 // use the passing content width to cap x as the current 6568 // mContentWidth may not be updated yet 6569 x = Math.max(0, 6570 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6571 int top = contentToViewY(data.mTop); 6572 int height = contentToViewDimension(data.mHeight); 6573 int maxHeight = contentToViewDimension(data.mContentHeight); 6574 int viewHeight = getViewHeight(); 6575 int y = (int) (top + data.mYPercentInDoc * height - 6576 data.mYPercentInView * viewHeight); 6577 if (DebugFlags.WEB_VIEW) { 6578 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6579 height + ",maxHeight=" + maxHeight + 6580 ",viewHeight=" + viewHeight + ",y=" 6581 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6582 ",yPercentInView=" + data.mYPercentInView+ ")"); 6583 } 6584 // use the passing content height to cap y as the current 6585 // mContentHeight may not be updated yet 6586 y = Math.max(0, 6587 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6588 // We need to take into account the visible title height 6589 // when scrolling since y is an absolute view position. 6590 y = Math.max(0, y - getVisibleTitleHeight()); 6591 scrollTo(x, y); 6592 } 6593 break; 6594 6595 case CENTER_FIT_RECT: 6596 Rect r = (Rect)msg.obj; 6597 mInZoomOverview = false; 6598 centerFitRect(r.left, r.top, r.width(), r.height()); 6599 break; 6600 6601 default: 6602 super.handleMessage(msg); 6603 break; 6604 } 6605 } 6606 } 6607 6608 /** 6609 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 6610 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 6611 */ 6612 private void updateTextSelectionFromMessage(int nodePointer, 6613 int textGeneration, WebViewCore.TextSelectionData data) { 6614 if (inEditingMode() 6615 && mWebTextView.isSameTextField(nodePointer) 6616 && textGeneration == mTextGeneration) { 6617 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 6618 } 6619 } 6620 6621 // Class used to use a dropdown for a <select> element 6622 private class InvokeListBox implements Runnable { 6623 // Whether the listbox allows multiple selection. 6624 private boolean mMultiple; 6625 // Passed in to a list with multiple selection to tell 6626 // which items are selected. 6627 private int[] mSelectedArray; 6628 // Passed in to a list with single selection to tell 6629 // where the initial selection is. 6630 private int mSelection; 6631 6632 private Container[] mContainers; 6633 6634 // Need these to provide stable ids to my ArrayAdapter, 6635 // which normally does not have stable ids. (Bug 1250098) 6636 private class Container extends Object { 6637 /** 6638 * Possible values for mEnabled. Keep in sync with OptionStatus in 6639 * WebViewCore.cpp 6640 */ 6641 final static int OPTGROUP = -1; 6642 final static int OPTION_DISABLED = 0; 6643 final static int OPTION_ENABLED = 1; 6644 6645 String mString; 6646 int mEnabled; 6647 int mId; 6648 6649 public String toString() { 6650 return mString; 6651 } 6652 } 6653 6654 /** 6655 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6656 * and allow filtering. 6657 */ 6658 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6659 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6660 super(context, 6661 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6662 com.android.internal.R.layout.select_dialog_singlechoice, 6663 objects); 6664 } 6665 6666 @Override 6667 public View getView(int position, View convertView, 6668 ViewGroup parent) { 6669 // Always pass in null so that we will get a new CheckedTextView 6670 // Otherwise, an item which was previously used as an <optgroup> 6671 // element (i.e. has no check), could get used as an <option> 6672 // element, which needs a checkbox/radio, but it would not have 6673 // one. 6674 convertView = super.getView(position, null, parent); 6675 Container c = item(position); 6676 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6677 // ListView does not draw dividers between disabled and 6678 // enabled elements. Use a LinearLayout to provide dividers 6679 LinearLayout layout = new LinearLayout(mContext); 6680 layout.setOrientation(LinearLayout.VERTICAL); 6681 if (position > 0) { 6682 View dividerTop = new View(mContext); 6683 dividerTop.setBackgroundResource( 6684 android.R.drawable.divider_horizontal_bright); 6685 layout.addView(dividerTop); 6686 } 6687 6688 if (Container.OPTGROUP == c.mEnabled) { 6689 // Currently select_dialog_multichoice and 6690 // select_dialog_singlechoice are CheckedTextViews. If 6691 // that changes, the class cast will no longer be valid. 6692 Assert.assertTrue( 6693 convertView instanceof CheckedTextView); 6694 ((CheckedTextView) convertView).setCheckMarkDrawable( 6695 null); 6696 } else { 6697 // c.mEnabled == Container.OPTION_DISABLED 6698 // Draw the disabled element in a disabled state. 6699 convertView.setEnabled(false); 6700 } 6701 6702 layout.addView(convertView); 6703 if (position < getCount() - 1) { 6704 View dividerBottom = new View(mContext); 6705 dividerBottom.setBackgroundResource( 6706 android.R.drawable.divider_horizontal_bright); 6707 layout.addView(dividerBottom); 6708 } 6709 return layout; 6710 } 6711 return convertView; 6712 } 6713 6714 @Override 6715 public boolean hasStableIds() { 6716 // AdapterView's onChanged method uses this to determine whether 6717 // to restore the old state. Return false so that the old (out 6718 // of date) state does not replace the new, valid state. 6719 return false; 6720 } 6721 6722 private Container item(int position) { 6723 if (position < 0 || position >= getCount()) { 6724 return null; 6725 } 6726 return (Container) getItem(position); 6727 } 6728 6729 @Override 6730 public long getItemId(int position) { 6731 Container item = item(position); 6732 if (item == null) { 6733 return -1; 6734 } 6735 return item.mId; 6736 } 6737 6738 @Override 6739 public boolean areAllItemsEnabled() { 6740 return false; 6741 } 6742 6743 @Override 6744 public boolean isEnabled(int position) { 6745 Container item = item(position); 6746 if (item == null) { 6747 return false; 6748 } 6749 return Container.OPTION_ENABLED == item.mEnabled; 6750 } 6751 } 6752 6753 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 6754 mMultiple = true; 6755 mSelectedArray = selected; 6756 6757 int length = array.length; 6758 mContainers = new Container[length]; 6759 for (int i = 0; i < length; i++) { 6760 mContainers[i] = new Container(); 6761 mContainers[i].mString = array[i]; 6762 mContainers[i].mEnabled = enabled[i]; 6763 mContainers[i].mId = i; 6764 } 6765 } 6766 6767 private InvokeListBox(String[] array, int[] enabled, int selection) { 6768 mSelection = selection; 6769 mMultiple = false; 6770 6771 int length = array.length; 6772 mContainers = new Container[length]; 6773 for (int i = 0; i < length; i++) { 6774 mContainers[i] = new Container(); 6775 mContainers[i].mString = array[i]; 6776 mContainers[i].mEnabled = enabled[i]; 6777 mContainers[i].mId = i; 6778 } 6779 } 6780 6781 /* 6782 * Whenever the data set changes due to filtering, this class ensures 6783 * that the checked item remains checked. 6784 */ 6785 private class SingleDataSetObserver extends DataSetObserver { 6786 private long mCheckedId; 6787 private ListView mListView; 6788 private Adapter mAdapter; 6789 6790 /* 6791 * Create a new observer. 6792 * @param id The ID of the item to keep checked. 6793 * @param l ListView for getting and clearing the checked states 6794 * @param a Adapter for getting the IDs 6795 */ 6796 public SingleDataSetObserver(long id, ListView l, Adapter a) { 6797 mCheckedId = id; 6798 mListView = l; 6799 mAdapter = a; 6800 } 6801 6802 public void onChanged() { 6803 // The filter may have changed which item is checked. Find the 6804 // item that the ListView thinks is checked. 6805 int position = mListView.getCheckedItemPosition(); 6806 long id = mAdapter.getItemId(position); 6807 if (mCheckedId != id) { 6808 // Clear the ListView's idea of the checked item, since 6809 // it is incorrect 6810 mListView.clearChoices(); 6811 // Search for mCheckedId. If it is in the filtered list, 6812 // mark it as checked 6813 int count = mAdapter.getCount(); 6814 for (int i = 0; i < count; i++) { 6815 if (mAdapter.getItemId(i) == mCheckedId) { 6816 mListView.setItemChecked(i, true); 6817 break; 6818 } 6819 } 6820 } 6821 } 6822 6823 public void onInvalidate() {} 6824 } 6825 6826 public void run() { 6827 final ListView listView = (ListView) LayoutInflater.from(mContext) 6828 .inflate(com.android.internal.R.layout.select_dialog, null); 6829 final MyArrayListAdapter adapter = new 6830 MyArrayListAdapter(mContext, mContainers, mMultiple); 6831 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 6832 .setView(listView).setCancelable(true) 6833 .setInverseBackgroundForced(true); 6834 6835 if (mMultiple) { 6836 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 6837 public void onClick(DialogInterface dialog, int which) { 6838 mWebViewCore.sendMessage( 6839 EventHub.LISTBOX_CHOICES, 6840 adapter.getCount(), 0, 6841 listView.getCheckedItemPositions()); 6842 }}); 6843 b.setNegativeButton(android.R.string.cancel, 6844 new DialogInterface.OnClickListener() { 6845 public void onClick(DialogInterface dialog, int which) { 6846 mWebViewCore.sendMessage( 6847 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6848 }}); 6849 } 6850 final AlertDialog dialog = b.create(); 6851 listView.setAdapter(adapter); 6852 listView.setFocusableInTouchMode(true); 6853 // There is a bug (1250103) where the checks in a ListView with 6854 // multiple items selected are associated with the positions, not 6855 // the ids, so the items do not properly retain their checks when 6856 // filtered. Do not allow filtering on multiple lists until 6857 // that bug is fixed. 6858 6859 listView.setTextFilterEnabled(!mMultiple); 6860 if (mMultiple) { 6861 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 6862 int length = mSelectedArray.length; 6863 for (int i = 0; i < length; i++) { 6864 listView.setItemChecked(mSelectedArray[i], true); 6865 } 6866 } else { 6867 listView.setOnItemClickListener(new OnItemClickListener() { 6868 public void onItemClick(AdapterView parent, View v, 6869 int position, long id) { 6870 mWebViewCore.sendMessage( 6871 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 6872 dialog.dismiss(); 6873 } 6874 }); 6875 if (mSelection != -1) { 6876 listView.setSelection(mSelection); 6877 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 6878 listView.setItemChecked(mSelection, true); 6879 DataSetObserver observer = new SingleDataSetObserver( 6880 adapter.getItemId(mSelection), listView, adapter); 6881 adapter.registerDataSetObserver(observer); 6882 } 6883 } 6884 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 6885 public void onCancel(DialogInterface dialog) { 6886 mWebViewCore.sendMessage( 6887 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6888 } 6889 }); 6890 dialog.show(); 6891 } 6892 } 6893 6894 /* 6895 * Request a dropdown menu for a listbox with multiple selection. 6896 * 6897 * @param array Labels for the listbox. 6898 * @param enabledArray State for each element in the list. See static 6899 * integers in Container class. 6900 * @param selectedArray Which positions are initally selected. 6901 */ 6902 void requestListBox(String[] array, int[] enabledArray, int[] 6903 selectedArray) { 6904 mPrivateHandler.post( 6905 new InvokeListBox(array, enabledArray, selectedArray)); 6906 } 6907 6908 private void updateZoomRange(WebViewCore.RestoreState restoreState, 6909 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 6910 if (restoreState.mMinScale == 0) { 6911 if (restoreState.mMobileSite) { 6912 if (minPrefWidth > Math.max(0, viewWidth)) { 6913 mMinZoomScale = (float) viewWidth / minPrefWidth; 6914 mMinZoomScaleFixed = false; 6915 if (updateZoomOverview) { 6916 WebSettings settings = getSettings(); 6917 mInZoomOverview = settings.getUseWideViewPort() && 6918 settings.getLoadWithOverviewMode(); 6919 } 6920 } else { 6921 mMinZoomScale = restoreState.mDefaultScale; 6922 mMinZoomScaleFixed = true; 6923 } 6924 } else { 6925 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 6926 mMinZoomScaleFixed = false; 6927 } 6928 } else { 6929 mMinZoomScale = restoreState.mMinScale; 6930 mMinZoomScaleFixed = true; 6931 } 6932 if (restoreState.mMaxScale == 0) { 6933 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 6934 } else { 6935 mMaxZoomScale = restoreState.mMaxScale; 6936 } 6937 } 6938 6939 /* 6940 * Request a dropdown menu for a listbox with single selection or a single 6941 * <select> element. 6942 * 6943 * @param array Labels for the listbox. 6944 * @param enabledArray State for each element in the list. See static 6945 * integers in Container class. 6946 * @param selection Which position is initally selected. 6947 */ 6948 void requestListBox(String[] array, int[] enabledArray, int selection) { 6949 mPrivateHandler.post( 6950 new InvokeListBox(array, enabledArray, selection)); 6951 } 6952 6953 // called by JNI 6954 private void sendMoveFocus(int frame, int node) { 6955 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 6956 new WebViewCore.CursorData(frame, node, 0, 0)); 6957 } 6958 6959 // called by JNI 6960 private void sendMoveMouse(int frame, int node, int x, int y) { 6961 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 6962 new WebViewCore.CursorData(frame, node, x, y)); 6963 } 6964 6965 /* 6966 * Send a mouse move event to the webcore thread. 6967 * 6968 * @param removeFocus Pass true if the "mouse" cursor is now over a node 6969 * which wants key events, but it is not the focus. This 6970 * will make the visual appear as though nothing is in 6971 * focus. Remove the WebTextView, if present, and stop 6972 * drawing the blinking caret. 6973 * called by JNI 6974 */ 6975 private void sendMoveMouseIfLatest(boolean removeFocus) { 6976 if (removeFocus) { 6977 clearTextEntry(true); 6978 } 6979 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 6980 cursorData()); 6981 } 6982 6983 // called by JNI 6984 private void sendMotionUp(int touchGeneration, 6985 int frame, int node, int x, int y) { 6986 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6987 touchUpData.mMoveGeneration = touchGeneration; 6988 touchUpData.mFrame = frame; 6989 touchUpData.mNode = node; 6990 touchUpData.mX = x; 6991 touchUpData.mY = y; 6992 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6993 } 6994 6995 6996 private int getScaledMaxXScroll() { 6997 int width; 6998 if (mHeightCanMeasure == false) { 6999 width = getViewWidth() / 4; 7000 } else { 7001 Rect visRect = new Rect(); 7002 calcOurVisibleRect(visRect); 7003 width = visRect.width() / 2; 7004 } 7005 // FIXME the divisor should be retrieved from somewhere 7006 return viewToContentX(width); 7007 } 7008 7009 private int getScaledMaxYScroll() { 7010 int height; 7011 if (mHeightCanMeasure == false) { 7012 height = getViewHeight() / 4; 7013 } else { 7014 Rect visRect = new Rect(); 7015 calcOurVisibleRect(visRect); 7016 height = visRect.height() / 2; 7017 } 7018 // FIXME the divisor should be retrieved from somewhere 7019 // the closest thing today is hard-coded into ScrollView.java 7020 // (from ScrollView.java, line 363) int maxJump = height/2; 7021 return Math.round(height * mInvActualScale); 7022 } 7023 7024 /** 7025 * Called by JNI to invalidate view 7026 */ 7027 private void viewInvalidate() { 7028 invalidate(); 7029 } 7030 7031 /** 7032 * Pass the key to the plugin. This assumes that nativeFocusIsPlugin() 7033 * returned true. 7034 */ 7035 private void letPluginHandleNavKey(int keyCode, long time, boolean down) { 7036 int keyEventAction; 7037 int eventHubAction; 7038 if (down) { 7039 keyEventAction = KeyEvent.ACTION_DOWN; 7040 eventHubAction = EventHub.KEY_DOWN; 7041 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7042 } else { 7043 keyEventAction = KeyEvent.ACTION_UP; 7044 eventHubAction = EventHub.KEY_UP; 7045 } 7046 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7047 1, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 7048 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 7049 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 7050 , 0, 0, 0); 7051 mWebViewCore.sendMessage(eventHubAction, event); 7052 } 7053 7054 // return true if the key was handled 7055 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7056 long time) { 7057 if (mNativeClass == 0) { 7058 return false; 7059 } 7060 mLastCursorTime = time; 7061 mLastCursorBounds = nativeGetCursorRingBounds(); 7062 boolean keyHandled 7063 = nativeMoveCursor(keyCode, count, noScroll) == false; 7064 if (DebugFlags.WEB_VIEW) { 7065 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7066 + " mLastCursorTime=" + mLastCursorTime 7067 + " handled=" + keyHandled); 7068 } 7069 if (keyHandled == false || mHeightCanMeasure == false) { 7070 return keyHandled; 7071 } 7072 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7073 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7074 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7075 Rect visRect = new Rect(); 7076 calcOurVisibleRect(visRect); 7077 Rect outset = new Rect(visRect); 7078 int maxXScroll = visRect.width() / 2; 7079 int maxYScroll = visRect.height() / 2; 7080 outset.inset(-maxXScroll, -maxYScroll); 7081 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7082 return keyHandled; 7083 } 7084 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7085 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7086 maxXScroll); 7087 if (maxH > 0) { 7088 pinScrollBy(maxH, 0, true, 0); 7089 } else { 7090 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7091 -maxXScroll); 7092 if (maxH < 0) { 7093 pinScrollBy(maxH, 0, true, 0); 7094 } 7095 } 7096 if (mLastCursorBounds.isEmpty()) return keyHandled; 7097 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7098 return keyHandled; 7099 } 7100 if (DebugFlags.WEB_VIEW) { 7101 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7102 + contentCursorRingBounds); 7103 } 7104 requestRectangleOnScreen(viewCursorRingBounds); 7105 mUserScroll = true; 7106 return keyHandled; 7107 } 7108 7109 /** 7110 * Set the background color. It's white by default. Pass 7111 * zero to make the view transparent. 7112 * @param color the ARGB color described by Color.java 7113 */ 7114 public void setBackgroundColor(int color) { 7115 mBackgroundColor = color; 7116 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7117 } 7118 7119 public void debugDump() { 7120 nativeDebugDump(); 7121 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7122 } 7123 7124 /** 7125 * Draw the HTML page into the specified canvas. This call ignores any 7126 * view-specific zoom, scroll offset, or other changes. It does not draw 7127 * any view-specific chrome, such as progress or URL bars. 7128 * 7129 * @hide only needs to be accessible to Browser and testing 7130 */ 7131 public void drawPage(Canvas canvas) { 7132 mWebViewCore.drawContentPicture(canvas, 0, false, false); 7133 } 7134 7135 /** 7136 * Set the time to wait between passing touches to WebCore. See also the 7137 * TOUCH_SENT_INTERVAL member for further discussion. 7138 * 7139 * @hide This is only used by the DRT test application. 7140 */ 7141 public void setTouchInterval(int interval) { 7142 mCurrentTouchInterval = interval; 7143 } 7144 7145 /** 7146 * Update our cache with updatedText. 7147 * @param updatedText The new text to put in our cache. 7148 */ 7149 /* package */ void updateCachedTextfield(String updatedText) { 7150 // Also place our generation number so that when we look at the cache 7151 // we recognize that it is up to date. 7152 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7153 } 7154 7155 private native int nativeCacheHitFramePointer(); 7156 private native Rect nativeCacheHitNodeBounds(); 7157 private native int nativeCacheHitNodePointer(); 7158 /* package */ native void nativeClearCursor(); 7159 private native void nativeCreate(int ptr); 7160 private native int nativeCursorFramePointer(); 7161 private native Rect nativeCursorNodeBounds(); 7162 private native int nativeCursorNodePointer(); 7163 /* package */ native boolean nativeCursorMatchesFocus(); 7164 private native boolean nativeCursorIntersects(Rect visibleRect); 7165 private native boolean nativeCursorIsAnchor(); 7166 private native boolean nativeCursorIsTextInput(); 7167 private native Point nativeCursorPosition(); 7168 private native String nativeCursorText(); 7169 /** 7170 * Returns true if the native cursor node says it wants to handle key events 7171 * (ala plugins). This can only be called if mNativeClass is non-zero! 7172 */ 7173 private native boolean nativeCursorWantsKeyEvents(); 7174 private native void nativeDebugDump(); 7175 private native void nativeDestroy(); 7176 private native boolean nativeEvaluateLayersAnimations(); 7177 private native void nativeDrawExtras(Canvas canvas, int extra); 7178 private native void nativeDumpDisplayTree(String urlOrNull); 7179 private native int nativeFindAll(String findLower, String findUpper); 7180 private native void nativeFindNext(boolean forward); 7181 /* package */ native int nativeFocusCandidateFramePointer(); 7182 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 7183 private native boolean nativeFocusCandidateIsPassword(); 7184 private native boolean nativeFocusCandidateIsRtlText(); 7185 private native boolean nativeFocusCandidateIsTextInput(); 7186 /* package */ native int nativeFocusCandidateMaxLength(); 7187 /* package */ native String nativeFocusCandidateName(); 7188 private native Rect nativeFocusCandidateNodeBounds(); 7189 private native int nativeFocusCandidatePointer(); 7190 private native String nativeFocusCandidateText(); 7191 private native int nativeFocusCandidateTextSize(); 7192 /** 7193 * Returns an integer corresponding to WebView.cpp::type. 7194 * See WebTextView.setType() 7195 */ 7196 private native int nativeFocusCandidateType(); 7197 private native boolean nativeFocusIsPlugin(); 7198 private native Rect nativeFocusNodeBounds(); 7199 /* package */ native int nativeFocusNodePointer(); 7200 private native Rect nativeGetCursorRingBounds(); 7201 private native String nativeGetSelection(); 7202 private native boolean nativeHasCursorNode(); 7203 private native boolean nativeHasFocusNode(); 7204 private native void nativeHideCursor(); 7205 private native String nativeImageURI(int x, int y); 7206 private native void nativeInstrumentReport(); 7207 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7208 // return true if the page has been scrolled 7209 private native boolean nativeMotionUp(int x, int y, int slop); 7210 // returns false if it handled the key 7211 private native boolean nativeMoveCursor(int keyCode, int count, 7212 boolean noScroll); 7213 private native int nativeMoveGeneration(); 7214 private native void nativeMoveSelection(int x, int y, 7215 boolean extendSelection); 7216 private native boolean nativePointInNavCache(int x, int y, int slop); 7217 // Like many other of our native methods, you must make sure that 7218 // mNativeClass is not null before calling this method. 7219 private native void nativeRecordButtons(boolean focused, 7220 boolean pressed, boolean invalidate); 7221 private native void nativeSelectBestAt(Rect rect); 7222 private native void nativeSetFindIsEmpty(); 7223 private native void nativeSetFindIsUp(boolean isUp); 7224 private native void nativeSetFollowedLink(boolean followed); 7225 private native void nativeSetHeightCanMeasure(boolean measure); 7226 private native void nativeSetRootLayer(int layer); 7227 private native void nativeSetSelectionPointer(boolean set, 7228 float scale, int x, int y, boolean extendSelection); 7229 private native void nativeSetSelectionRegion(boolean set); 7230 private native Rect nativeSubtractLayers(Rect content); 7231 private native int nativeTextGeneration(); 7232 // Never call this version except by updateCachedTextfield(String) - 7233 // we always want to pass in our generation number. 7234 private native void nativeUpdateCachedTextfield(String updatedText, 7235 int generation); 7236 // return NO_LEFTEDGE means failure. 7237 private static final int NO_LEFTEDGE = -1; 7238 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 7239} 7240