WebView.java revision 180403ac103e8ee1eeb07c5e3377748ee6a03917
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.annotation.Widget; 20import android.app.AlertDialog; 21import android.content.Context; 22import android.content.DialogInterface; 23import android.content.Intent; 24import android.content.DialogInterface.OnCancelListener; 25import android.content.pm.PackageManager; 26import android.database.DataSetObserver; 27import android.graphics.Bitmap; 28import android.graphics.BitmapFactory; 29import android.graphics.BitmapShader; 30import android.graphics.Canvas; 31import android.graphics.Color; 32import android.graphics.Interpolator; 33import android.graphics.Paint; 34import android.graphics.Picture; 35import android.graphics.Point; 36import android.graphics.Rect; 37import android.graphics.Region; 38import android.graphics.Shader; 39import android.graphics.drawable.Drawable; 40import android.net.http.SslCertificate; 41import android.net.Uri; 42import android.os.Bundle; 43import android.os.Handler; 44import android.os.Message; 45import android.os.ServiceManager; 46import android.os.SystemClock; 47import android.text.IClipboard; 48import android.text.Selection; 49import android.text.Spannable; 50import android.util.AttributeSet; 51import android.util.EventLog; 52import android.util.Log; 53import android.util.TypedValue; 54import android.view.Gravity; 55import android.view.KeyEvent; 56import android.view.LayoutInflater; 57import android.view.MotionEvent; 58import android.view.ScaleGestureDetector; 59import android.view.SoundEffectConstants; 60import android.view.VelocityTracker; 61import android.view.View; 62import android.view.ViewConfiguration; 63import android.view.ViewGroup; 64import android.view.ViewTreeObserver; 65import android.view.animation.AlphaAnimation; 66import android.view.inputmethod.EditorInfo; 67import android.view.inputmethod.InputConnection; 68import android.view.inputmethod.InputMethodManager; 69import android.webkit.WebTextView.AutoCompleteAdapter; 70import android.webkit.WebViewCore.EventHub; 71import android.webkit.WebViewCore.TouchEventData; 72import android.widget.AbsoluteLayout; 73import android.widget.Adapter; 74import android.widget.AdapterView; 75import android.widget.ArrayAdapter; 76import android.widget.CheckedTextView; 77import android.widget.FrameLayout; 78import android.widget.LinearLayout; 79import android.widget.ListView; 80import android.widget.OverScroller; 81import android.widget.Toast; 82import android.widget.ZoomButtonsController; 83import android.widget.ZoomControls; 84import android.widget.AdapterView.OnItemClickListener; 85 86import java.io.File; 87import java.io.FileInputStream; 88import java.io.FileNotFoundException; 89import java.io.FileOutputStream; 90import java.io.IOException; 91import java.net.URLDecoder; 92import java.util.ArrayList; 93import java.util.List; 94import java.util.HashMap; 95import java.util.Map; 96import java.util.Set; 97 98import junit.framework.Assert; 99 100/** 101 * <p>A View that displays web pages. This class is the basis upon which you 102 * can roll your own web browser or simply display some online content within your Activity. 103 * It uses the WebKit rendering engine to display 104 * web pages and includes methods to navigate forward and backward 105 * through a history, zoom in and out, perform text searches and more.</p> 106 * <p>To enable the built-in zoom, set 107 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 108 * (introduced in API version 3). 109 * <p>Note that, in order for your Activity to access the Internet and load web pages 110 * in a WebView, you must add the <var>INTERNET</var> permissions to your 111 * Android Manifest file:</p> 112 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 113 * 114 * <p>This must be a child of the <code><manifest></code> element.</p> 115 * 116 * <h3>Basic usage</h3> 117 * 118 * <p>By default, a WebView provides no browser-like widgets, does not 119 * enable JavaScript and errors will be ignored. If your goal is only 120 * to display some HTML as a part of your UI, this is probably fine; 121 * the user won't need to interact with the web page beyond reading 122 * it, and the web page won't need to interact with the user. If you 123 * actually want a fully blown web browser, then you probably want to 124 * invoke the Browser application with your URL rather than show it 125 * with a WebView. See {@link android.content.Intent} for more information.</p> 126 * 127 * <pre class="prettyprint"> 128 * WebView webview = new WebView(this); 129 * setContentView(webview); 130 * 131 * // Simplest usage: note that an exception will NOT be thrown 132 * // if there is an error loading this page (see below). 133 * webview.loadUrl("http://slashdot.org/"); 134 * 135 * // Of course you can also load from any string: 136 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 137 * webview.loadData(summary, "text/html", "utf-8"); 138 * // ... although note that there are restrictions on what this HTML can do. 139 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 140 * </pre> 141 * 142 * <p>A WebView has several customization points where you can add your 143 * own behavior. These are:</p> 144 * 145 * <ul> 146 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 147 * This class is called when something that might impact a 148 * browser UI happens, for instance, progress updates and 149 * JavaScript alerts are sent here. 150 * </li> 151 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 152 * It will be called when things happen that impact the 153 * rendering of the content, eg, errors or form submissions. You 154 * can also intercept URL loading here.</li> 155 * <li>Via the {@link android.webkit.WebSettings} class, which contains 156 * miscellaneous configuration. </li> 157 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 158 * This lets you bind Java objects into the WebView so they can be 159 * controlled from the web pages JavaScript.</li> 160 * </ul> 161 * 162 * <p>Here's a more complicated example, showing error handling, 163 * settings, and progress notification:</p> 164 * 165 * <pre class="prettyprint"> 166 * // Let's display the progress in the activity title bar, like the 167 * // browser app does. 168 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 169 * 170 * webview.getSettings().setJavaScriptEnabled(true); 171 * 172 * final Activity activity = this; 173 * webview.setWebChromeClient(new WebChromeClient() { 174 * public void onProgressChanged(WebView view, int progress) { 175 * // Activities and WebViews measure progress with different scales. 176 * // The progress meter will automatically disappear when we reach 100% 177 * activity.setProgress(progress * 1000); 178 * } 179 * }); 180 * webview.setWebViewClient(new WebViewClient() { 181 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 182 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 183 * } 184 * }); 185 * 186 * webview.loadUrl("http://slashdot.org/"); 187 * </pre> 188 * 189 * <h3>Cookie and window management</h3> 190 * 191 * <p>For obvious security reasons, your application has its own 192 * cache, cookie store etc - it does not share the Browser 193 * applications data. Cookies are managed on a separate thread, so 194 * operations like index building don't block the UI 195 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 196 * if you want to use cookies in your application. 197 * </p> 198 * 199 * <p>By default, requests by the HTML to open new windows are 200 * ignored. This is true whether they be opened by JavaScript or by 201 * the target attribute on a link. You can customize your 202 * WebChromeClient to provide your own behaviour for opening multiple windows, 203 * and render them in whatever manner you want.</p> 204 * 205 * <p>Standard behavior for an Activity is to be destroyed and 206 * recreated when the devices orientation is changed. This will cause 207 * the WebView to reload the current page. If you don't want that, you 208 * can set your Activity to handle the orientation and keyboardHidden 209 * changes, and then just leave the WebView alone. It'll automatically 210 * re-orient itself as appropriate.</p> 211 */ 212@Widget 213public class WebView extends AbsoluteLayout 214 implements ViewTreeObserver.OnGlobalFocusChangeListener, 215 ViewGroup.OnHierarchyChangeListener { 216 217 // enable debug output for drag trackers 218 private static final boolean DEBUG_DRAG_TRACKER = false; 219 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 220 // the screen all-the-time. Good for profiling our drawing code 221 static private final boolean AUTO_REDRAW_HACK = false; 222 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 223 private boolean mAutoRedraw; 224 225 static final String LOGTAG = "webview"; 226 227 private static class ExtendedZoomControls extends FrameLayout { 228 public ExtendedZoomControls(Context context, AttributeSet attrs) { 229 super(context, attrs); 230 LayoutInflater inflater = (LayoutInflater) 231 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 232 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 233 mPlusMinusZoomControls = (ZoomControls) findViewById( 234 com.android.internal.R.id.zoomControls); 235 findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( 236 View.GONE); 237 } 238 239 public void show(boolean showZoom, boolean canZoomOut) { 240 mPlusMinusZoomControls.setVisibility( 241 showZoom ? View.VISIBLE : View.GONE); 242 fade(View.VISIBLE, 0.0f, 1.0f); 243 } 244 245 public void hide() { 246 fade(View.GONE, 1.0f, 0.0f); 247 } 248 249 private void fade(int visibility, float startAlpha, float endAlpha) { 250 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 251 anim.setDuration(500); 252 startAnimation(anim); 253 setVisibility(visibility); 254 } 255 256 public boolean hasFocus() { 257 return mPlusMinusZoomControls.hasFocus(); 258 } 259 260 public void setOnZoomInClickListener(OnClickListener listener) { 261 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 262 } 263 264 public void setOnZoomOutClickListener(OnClickListener listener) { 265 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 266 } 267 268 ZoomControls mPlusMinusZoomControls; 269 } 270 271 /** 272 * Transportation object for returning WebView across thread boundaries. 273 */ 274 public class WebViewTransport { 275 private WebView mWebview; 276 277 /** 278 * Set the WebView to the transportation object. 279 * @param webview The WebView to transport. 280 */ 281 public synchronized void setWebView(WebView webview) { 282 mWebview = webview; 283 } 284 285 /** 286 * Return the WebView object. 287 * @return WebView The transported WebView object. 288 */ 289 public synchronized WebView getWebView() { 290 return mWebview; 291 } 292 } 293 294 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 295 private final CallbackProxy mCallbackProxy; 296 297 private final WebViewDatabase mDatabase; 298 299 // SSL certificate for the main top-level page (if secure) 300 private SslCertificate mCertificate; 301 302 // Native WebView pointer that is 0 until the native object has been 303 // created. 304 private int mNativeClass; 305 // This would be final but it needs to be set to null when the WebView is 306 // destroyed. 307 private WebViewCore mWebViewCore; 308 // Handler for dispatching UI messages. 309 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 310 private WebTextView mWebTextView; 311 // Used to ignore changes to webkit text that arrives to the UI side after 312 // more key events. 313 private int mTextGeneration; 314 315 // Used by WebViewCore to create child views. 316 /* package */ final ViewManager mViewManager; 317 318 // Used to display in full screen mode 319 PluginFullScreenHolder mFullScreenHolder; 320 321 /** 322 * Position of the last touch event. 323 */ 324 private float mLastTouchX; 325 private float mLastTouchY; 326 327 /** 328 * Time of the last touch event. 329 */ 330 private long mLastTouchTime; 331 332 /** 333 * Time of the last time sending touch event to WebViewCore 334 */ 335 private long mLastSentTouchTime; 336 337 /** 338 * The minimum elapsed time before sending another ACTION_MOVE event to 339 * WebViewCore. This really should be tuned for each type of the devices. 340 * For example in Google Map api test case, it takes Dream device at least 341 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 342 * triggering the layout and drawing the picture. While the same process 343 * takes 60+ms on the current high speed device. If we make 344 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 345 * to WebViewCore queue and the real layout and draw events will be pushed 346 * to further, which slows down the refresh rate. Choose 50 to favor the 347 * current high speed devices. For Dream like devices, 100 is a better 348 * choice. Maybe make this in the buildspec later. 349 */ 350 private static final int TOUCH_SENT_INTERVAL = 50; 351 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 352 353 /** 354 * Helper class to get velocity for fling 355 */ 356 VelocityTracker mVelocityTracker; 357 private int mMaximumFling; 358 private float mLastVelocity; 359 private float mLastVelX; 360 private float mLastVelY; 361 362 /** 363 * Touch mode 364 */ 365 private int mTouchMode = TOUCH_DONE_MODE; 366 private static final int TOUCH_INIT_MODE = 1; 367 private static final int TOUCH_DRAG_START_MODE = 2; 368 private static final int TOUCH_DRAG_MODE = 3; 369 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 370 private static final int TOUCH_SHORTPRESS_MODE = 5; 371 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 372 private static final int TOUCH_DONE_MODE = 7; 373 private static final int TOUCH_SELECT_MODE = 8; 374 private static final int TOUCH_PINCH_DRAG = 9; 375 376 // Whether to forward the touch events to WebCore 377 private boolean mForwardTouchEvents = false; 378 379 // Whether to prevent default during touch. The initial value depends on 380 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 381 // for touch down. Otherwise UI will wait for the answer of the first 382 // confirmed move before taking over the control. 383 private static final int PREVENT_DEFAULT_NO = 0; 384 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 385 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 386 private static final int PREVENT_DEFAULT_YES = 3; 387 private static final int PREVENT_DEFAULT_IGNORE = 4; 388 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 389 390 // true when the touch movement exceeds the slop 391 private boolean mConfirmMove; 392 393 // if true, touch events will be first processed by WebCore, if prevent 394 // default is not set, the UI will continue handle them. 395 private boolean mDeferTouchProcess; 396 397 // to avoid interfering with the current touch events, track them 398 // separately. Currently no snapping or fling in the deferred process mode 399 private int mDeferTouchMode = TOUCH_DONE_MODE; 400 private float mLastDeferTouchX; 401 private float mLastDeferTouchY; 402 403 // To keep track of whether the current drag was initiated by a WebTextView, 404 // so that we know not to hide the cursor 405 boolean mDragFromTextInput; 406 407 // Whether or not to draw the cursor ring. 408 private boolean mDrawCursorRing = true; 409 410 // true if onPause has been called (and not onResume) 411 private boolean mIsPaused; 412 413 /** 414 * Customizable constant 415 */ 416 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 417 private int mTouchSlopSquare; 418 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 419 private int mDoubleTapSlopSquare; 420 // pre-computed density adjusted navigation slop 421 private int mNavSlop; 422 // This should be ViewConfiguration.getTapTimeout() 423 // But system time out is 100ms, which is too short for the browser. 424 // In the browser, if it switches out of tap too soon, jump tap won't work. 425 private static final int TAP_TIMEOUT = 200; 426 // This should be ViewConfiguration.getLongPressTimeout() 427 // But system time out is 500ms, which is too short for the browser. 428 // With a short timeout, it's difficult to treat trigger a short press. 429 private static final int LONG_PRESS_TIMEOUT = 1000; 430 // needed to avoid flinging after a pause of no movement 431 private static final int MIN_FLING_TIME = 250; 432 // draw unfiltered after drag is held without movement 433 private static final int MOTIONLESS_TIME = 100; 434 // The time that the Zoom Controls are visible before fading away 435 private static final long ZOOM_CONTROLS_TIMEOUT = 436 ViewConfiguration.getZoomControlsTimeout(); 437 // The amount of content to overlap between two screens when going through 438 // pages with the space bar, in pixels. 439 private static final int PAGE_SCROLL_OVERLAP = 24; 440 441 /** 442 * These prevent calling requestLayout if either dimension is fixed. This 443 * depends on the layout parameters and the measure specs. 444 */ 445 boolean mWidthCanMeasure; 446 boolean mHeightCanMeasure; 447 448 // Remember the last dimensions we sent to the native side so we can avoid 449 // sending the same dimensions more than once. 450 int mLastWidthSent; 451 int mLastHeightSent; 452 453 private int mContentWidth; // cache of value from WebViewCore 454 private int mContentHeight; // cache of value from WebViewCore 455 456 // Need to have the separate control for horizontal and vertical scrollbar 457 // style than the View's single scrollbar style 458 private boolean mOverlayHorizontalScrollbar = true; 459 private boolean mOverlayVerticalScrollbar = false; 460 461 // our standard speed. this way small distances will be traversed in less 462 // time than large distances, but we cap the duration, so that very large 463 // distances won't take too long to get there. 464 private static final int STD_SPEED = 480; // pixels per second 465 // time for the longest scroll animation 466 private static final int MAX_DURATION = 750; // milliseconds 467 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 468 private OverScroller mScroller; 469 private boolean mInOverScrollMode = false; 470 private static Paint mOverScrollBackground; 471 472 private boolean mWrapContent; 473 private static final int MOTIONLESS_FALSE = 0; 474 private static final int MOTIONLESS_PENDING = 1; 475 private static final int MOTIONLESS_TRUE = 2; 476 private int mHeldMotionless; 477 478 // whether support multi-touch 479 private boolean mSupportMultiTouch; 480 // use the framework's ScaleGestureDetector to handle multi-touch 481 private ScaleGestureDetector mScaleDetector; 482 // minimum scale change during multi-touch zoom 483 private static float PREVIEW_SCALE_INCREMENT = 0.01f; 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; 540 541 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 542 private static final int LAST_PACKAGE_MSG_ID = FIND_AGAIN; 543 544 static final String[] HandlerPrivateDebugString = { 545 "REMEMBER_PASSWORD", // = 1; 546 "NEVER_REMEMBER_PASSWORD", // = 2; 547 "SWITCH_TO_SHORTPRESS", // = 3; 548 "SWITCH_TO_LONGPRESS", // = 4; 549 "RELEASE_SINGLE_TAP", // = 5; 550 "REQUEST_FORM_DATA", // = 6; 551 "RESUME_WEBCORE_PRIORITY", // = 7; 552 "DRAG_HELD_MOTIONLESS", // = 8; 553 "AWAKEN_SCROLL_BARS", // = 9; 554 "PREVENT_DEFAULT_TIMEOUT" // = 10; 555 }; 556 557 static final String[] HandlerPackageDebugString = { 558 "SCROLL_TO_MSG_ID", // = 101; 559 "SCROLL_BY_MSG_ID", // = 102; 560 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 561 "SYNC_SCROLL_TO_MSG_ID", // = 104; 562 "NEW_PICTURE_MSG_ID", // = 105; 563 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 564 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 565 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 566 "UPDATE_ZOOM_RANGE", // = 109; 567 "MOVE_OUT_OF_PLUGIN", // = 110; 568 "CLEAR_TEXT_ENTRY", // = 111; 569 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 570 "SHOW_RECT_MSG_ID", // = 113; 571 "LONG_PRESS_CENTER", // = 114; 572 "PREVENT_TOUCH_ID", // = 115; 573 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 574 "INVAL_RECT_MSG_ID", // = 117; 575 "REQUEST_KEYBOARD", // = 118; 576 "DO_MOTION_UP", // = 119; 577 "SHOW_FULLSCREEN", // = 120; 578 "HIDE_FULLSCREEN", // = 121; 579 "DOM_FOCUS_CHANGED", // = 122; 580 "IMMEDIATE_REPAINT_MSG_ID", // = 123; 581 "SET_ROOT_LAYER_MSG_ID", // = 124; 582 "RETURN_LABEL", // = 125; 583 "FIND_AGAIN" // = 126; 584 }; 585 586 // If the site doesn't use the viewport meta tag to specify the viewport, 587 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 588 static final int DEFAULT_VIEWPORT_WIDTH = 800; 589 590 // normally we try to fit the content to the minimum preferred width 591 // calculated by the Webkit. To avoid the bad behavior when some site's 592 // minimum preferred width keeps growing when changing the viewport width or 593 // the minimum preferred width is huge, an upper limit is needed. 594 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 595 596 // default scale limit. Depending on the display density 597 private static float DEFAULT_MAX_ZOOM_SCALE; 598 private static float DEFAULT_MIN_ZOOM_SCALE; 599 // scale limit, which can be set through viewport meta tag in the web page 600 private float mMaxZoomScale; 601 private float mMinZoomScale; 602 private boolean mMinZoomScaleFixed = true; 603 604 // initial scale in percent. 0 means using default. 605 private int mInitialScaleInPercent = 0; 606 607 // while in the zoom overview mode, the page's width is fully fit to the 608 // current window. The page is alive, in another words, you can click to 609 // follow the links. Double tap will toggle between zoom overview mode and 610 // the last zoom scale. 611 boolean mInZoomOverview = false; 612 613 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 614 // engadget always have wider mContentWidth no matter what viewport size is. 615 int mZoomOverviewWidth = DEFAULT_VIEWPORT_WIDTH; 616 float mTextWrapScale; 617 618 // default scale. Depending on the display density. 619 static int DEFAULT_SCALE_PERCENT; 620 private float mDefaultScale; 621 622 // set to true temporarily during ScaleGesture triggered zoom 623 private boolean mPreviewZoomOnly = false; 624 625 // computed scale and inverse, from mZoomWidth. 626 private float mActualScale; 627 private float mInvActualScale; 628 // if this is non-zero, it is used on drawing rather than mActualScale 629 private float mZoomScale; 630 private float mInvInitialZoomScale; 631 private float mInvFinalZoomScale; 632 private int mInitialScrollX; 633 private int mInitialScrollY; 634 private long mZoomStart; 635 private static final int ZOOM_ANIMATION_LENGTH = 500; 636 637 private boolean mUserScroll = false; 638 639 private int mSnapScrollMode = SNAP_NONE; 640 private static final int SNAP_NONE = 0; 641 private static final int SNAP_LOCK = 1; // not a separate state 642 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 643 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 644 private boolean mSnapPositive; 645 646 // keep these in sync with their counterparts in WebView.cpp 647 private static final int DRAW_EXTRAS_NONE = 0; 648 private static final int DRAW_EXTRAS_FIND = 1; 649 private static final int DRAW_EXTRAS_SELECTION = 2; 650 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 651 652 // Used to match key downs and key ups 653 private boolean mGotKeyDown; 654 655 /* package */ static boolean mLogEvent = true; 656 657 // for event log 658 private long mLastTouchUpTime = 0; 659 660 /** 661 * URI scheme for telephone number 662 */ 663 public static final String SCHEME_TEL = "tel:"; 664 /** 665 * URI scheme for email address 666 */ 667 public static final String SCHEME_MAILTO = "mailto:"; 668 /** 669 * URI scheme for map address 670 */ 671 public static final String SCHEME_GEO = "geo:0,0?q="; 672 673 private int mBackgroundColor = Color.WHITE; 674 675 // Used to notify listeners of a new picture. 676 private PictureListener mPictureListener; 677 /** 678 * Interface to listen for new pictures as they change. 679 */ 680 public interface PictureListener { 681 /** 682 * Notify the listener that the picture has changed. 683 * @param view The WebView that owns the picture. 684 * @param picture The new picture. 685 */ 686 public void onNewPicture(WebView view, Picture picture); 687 } 688 689 // FIXME: Want to make this public, but need to change the API file. 690 public /*static*/ class HitTestResult { 691 /** 692 * Default HitTestResult, where the target is unknown 693 */ 694 public static final int UNKNOWN_TYPE = 0; 695 /** 696 * HitTestResult for hitting a HTML::a tag 697 */ 698 public static final int ANCHOR_TYPE = 1; 699 /** 700 * HitTestResult for hitting a phone number 701 */ 702 public static final int PHONE_TYPE = 2; 703 /** 704 * HitTestResult for hitting a map address 705 */ 706 public static final int GEO_TYPE = 3; 707 /** 708 * HitTestResult for hitting an email address 709 */ 710 public static final int EMAIL_TYPE = 4; 711 /** 712 * HitTestResult for hitting an HTML::img tag 713 */ 714 public static final int IMAGE_TYPE = 5; 715 /** 716 * HitTestResult for hitting a HTML::a tag which contains HTML::img 717 */ 718 public static final int IMAGE_ANCHOR_TYPE = 6; 719 /** 720 * HitTestResult for hitting a HTML::a tag with src=http 721 */ 722 public static final int SRC_ANCHOR_TYPE = 7; 723 /** 724 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 725 */ 726 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 727 /** 728 * HitTestResult for hitting an edit text area 729 */ 730 public static final int EDIT_TEXT_TYPE = 9; 731 732 private int mType; 733 private String mExtra; 734 735 HitTestResult() { 736 mType = UNKNOWN_TYPE; 737 } 738 739 private void setType(int type) { 740 mType = type; 741 } 742 743 private void setExtra(String extra) { 744 mExtra = extra; 745 } 746 747 public int getType() { 748 return mType; 749 } 750 751 public String getExtra() { 752 return mExtra; 753 } 754 } 755 756 // The View containing the zoom controls 757 private ExtendedZoomControls mZoomControls; 758 private Runnable mZoomControlRunnable; 759 760 private ZoomButtonsController mZoomButtonsController; 761 762 // These keep track of the center point of the zoom. They are used to 763 // determine the point around which we should zoom. 764 private float mZoomCenterX; 765 private float mZoomCenterY; 766 767 private ZoomButtonsController.OnZoomListener mZoomListener = 768 new ZoomButtonsController.OnZoomListener() { 769 770 public void onVisibilityChanged(boolean visible) { 771 if (visible) { 772 switchOutDrawHistory(); 773 // Bring back the hidden zoom controls. 774 mZoomButtonsController.getZoomControls().setVisibility( 775 View.VISIBLE); 776 updateZoomButtonsEnabled(); 777 } 778 } 779 780 public void onZoom(boolean zoomIn) { 781 if (zoomIn) { 782 zoomIn(); 783 } else { 784 zoomOut(); 785 } 786 787 updateZoomButtonsEnabled(); 788 } 789 }; 790 791 /** 792 * Construct a new WebView with a Context object. 793 * @param context A Context object used to access application assets. 794 */ 795 public WebView(Context context) { 796 this(context, null); 797 } 798 799 /** 800 * Construct a new WebView with layout parameters. 801 * @param context A Context object used to access application assets. 802 * @param attrs An AttributeSet passed to our parent. 803 */ 804 public WebView(Context context, AttributeSet attrs) { 805 this(context, attrs, com.android.internal.R.attr.webViewStyle); 806 } 807 808 /** 809 * Construct a new WebView with layout parameters and a default style. 810 * @param context A Context object used to access application assets. 811 * @param attrs An AttributeSet passed to our parent. 812 * @param defStyle The default style resource ID. 813 */ 814 public WebView(Context context, AttributeSet attrs, int defStyle) { 815 this(context, attrs, defStyle, null); 816 } 817 818 /** 819 * Construct a new WebView with layout parameters, a default style and a set 820 * of custom Javscript interfaces to be added to the WebView at initialization 821 * time. This guarantees that these interfaces will be available when the JS 822 * context is initialized. 823 * @param context A Context object used to access application assets. 824 * @param attrs An AttributeSet passed to our parent. 825 * @param defStyle The default style resource ID. 826 * @param javascriptInterfaces is a Map of intareface names, as keys, and 827 * object implementing those interfaces, as values. 828 * @hide pending API council approval. 829 */ 830 protected WebView(Context context, AttributeSet attrs, int defStyle, 831 Map<String, Object> javascriptInterfaces) { 832 super(context, attrs, defStyle); 833 init(); 834 835 mCallbackProxy = new CallbackProxy(context, this); 836 mViewManager = new ViewManager(this); 837 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 838 mDatabase = WebViewDatabase.getInstance(context); 839 mScroller = new OverScroller(context); 840 841 mZoomButtonsController = new ZoomButtonsController(this); 842 mZoomButtonsController.setOnZoomListener(mZoomListener); 843 // ZoomButtonsController positions the buttons at the bottom, but in 844 // the middle. Change their layout parameters so they appear on the 845 // right. 846 View controls = mZoomButtonsController.getZoomControls(); 847 ViewGroup.LayoutParams params = controls.getLayoutParams(); 848 if (params instanceof FrameLayout.LayoutParams) { 849 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 850 params; 851 frameParams.gravity = Gravity.RIGHT; 852 } 853 updateMultiTouchSupport(context); 854 } 855 856 void updateMultiTouchSupport(Context context) { 857 WebSettings settings = getSettings(); 858 mSupportMultiTouch = context.getPackageManager().hasSystemFeature( 859 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 860 && settings.supportZoom() && settings.getBuiltInZoomControls(); 861 if (mSupportMultiTouch && (mScaleDetector == null)) { 862 mScaleDetector = new ScaleGestureDetector(context, 863 new ScaleDetectorListener()); 864 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 865 mScaleDetector = null; 866 } 867 } 868 869 private void updateZoomButtonsEnabled() { 870 boolean canZoomIn = mActualScale < mMaxZoomScale; 871 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 872 if (!canZoomIn && !canZoomOut) { 873 // Hide the zoom in and out buttons, as well as the fit to page 874 // button, if the page cannot zoom 875 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 876 } else { 877 // Set each one individually, as a page may be able to zoom in 878 // or out. 879 mZoomButtonsController.setZoomInEnabled(canZoomIn); 880 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 881 } 882 } 883 884 private void init() { 885 setWillNotDraw(false); 886 setFocusable(true); 887 setFocusableInTouchMode(true); 888 setClickable(true); 889 setLongClickable(true); 890 891 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 892 int slop = configuration.getScaledTouchSlop(); 893 mTouchSlopSquare = slop * slop; 894 mMinLockSnapReverseDistance = slop; 895 slop = configuration.getScaledDoubleTapSlop(); 896 mDoubleTapSlopSquare = slop * slop; 897 final float density = getContext().getResources().getDisplayMetrics().density; 898 // use one line height, 16 based on our current default font, for how 899 // far we allow a touch be away from the edge of a link 900 mNavSlop = (int) (16 * density); 901 // density adjusted scale factors 902 DEFAULT_SCALE_PERCENT = (int) (100 * density); 903 mDefaultScale = density; 904 mActualScale = density; 905 mInvActualScale = 1 / density; 906 mTextWrapScale = density; 907 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 908 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 909 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 910 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 911 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 912 } 913 914 /* package */void updateDefaultZoomDensity(int zoomDensity) { 915 final float density = getContext().getResources().getDisplayMetrics().density 916 * 100 / zoomDensity; 917 if (Math.abs(density - mDefaultScale) > 0.01) { 918 float scaleFactor = density / mDefaultScale; 919 // adjust the limits 920 mNavSlop = (int) (16 * density); 921 DEFAULT_SCALE_PERCENT = (int) (100 * density); 922 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 923 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 924 mDefaultScale = density; 925 mMaxZoomScale *= scaleFactor; 926 mMinZoomScale *= scaleFactor; 927 setNewZoomScale(mActualScale * scaleFactor, true, false); 928 } 929 } 930 931 /* package */ boolean onSavePassword(String schemePlusHost, String username, 932 String password, final Message resumeMsg) { 933 boolean rVal = false; 934 if (resumeMsg == null) { 935 // null resumeMsg implies saving password silently 936 mDatabase.setUsernamePassword(schemePlusHost, username, password); 937 } else { 938 final Message remember = mPrivateHandler.obtainMessage( 939 REMEMBER_PASSWORD); 940 remember.getData().putString("host", schemePlusHost); 941 remember.getData().putString("username", username); 942 remember.getData().putString("password", password); 943 remember.obj = resumeMsg; 944 945 final Message neverRemember = mPrivateHandler.obtainMessage( 946 NEVER_REMEMBER_PASSWORD); 947 neverRemember.getData().putString("host", schemePlusHost); 948 neverRemember.getData().putString("username", username); 949 neverRemember.getData().putString("password", password); 950 neverRemember.obj = resumeMsg; 951 952 new AlertDialog.Builder(getContext()) 953 .setTitle(com.android.internal.R.string.save_password_label) 954 .setMessage(com.android.internal.R.string.save_password_message) 955 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 956 new DialogInterface.OnClickListener() { 957 public void onClick(DialogInterface dialog, int which) { 958 resumeMsg.sendToTarget(); 959 } 960 }) 961 .setNeutralButton(com.android.internal.R.string.save_password_remember, 962 new DialogInterface.OnClickListener() { 963 public void onClick(DialogInterface dialog, int which) { 964 remember.sendToTarget(); 965 } 966 }) 967 .setNegativeButton(com.android.internal.R.string.save_password_never, 968 new DialogInterface.OnClickListener() { 969 public void onClick(DialogInterface dialog, int which) { 970 neverRemember.sendToTarget(); 971 } 972 }) 973 .setOnCancelListener(new OnCancelListener() { 974 public void onCancel(DialogInterface dialog) { 975 resumeMsg.sendToTarget(); 976 } 977 }).show(); 978 // Return true so that WebViewCore will pause while the dialog is 979 // up. 980 rVal = true; 981 } 982 return rVal; 983 } 984 985 @Override 986 public void setScrollBarStyle(int style) { 987 if (style == View.SCROLLBARS_INSIDE_INSET 988 || style == View.SCROLLBARS_OUTSIDE_INSET) { 989 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 990 } else { 991 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 992 } 993 super.setScrollBarStyle(style); 994 } 995 996 /** 997 * Specify whether the horizontal scrollbar has overlay style. 998 * @param overlay TRUE if horizontal scrollbar should have overlay style. 999 */ 1000 public void setHorizontalScrollbarOverlay(boolean overlay) { 1001 mOverlayHorizontalScrollbar = overlay; 1002 } 1003 1004 /** 1005 * Specify whether the vertical scrollbar has overlay style. 1006 * @param overlay TRUE if vertical scrollbar should have overlay style. 1007 */ 1008 public void setVerticalScrollbarOverlay(boolean overlay) { 1009 mOverlayVerticalScrollbar = overlay; 1010 } 1011 1012 /** 1013 * Return whether horizontal scrollbar has overlay style 1014 * @return TRUE if horizontal scrollbar has overlay style. 1015 */ 1016 public boolean overlayHorizontalScrollbar() { 1017 return mOverlayHorizontalScrollbar; 1018 } 1019 1020 /** 1021 * Return whether vertical scrollbar has overlay style 1022 * @return TRUE if vertical scrollbar has overlay style. 1023 */ 1024 public boolean overlayVerticalScrollbar() { 1025 return mOverlayVerticalScrollbar; 1026 } 1027 1028 /* 1029 * Return the width of the view where the content of WebView should render 1030 * to. 1031 * Note: this can be called from WebCoreThread. 1032 */ 1033 /* package */ int getViewWidth() { 1034 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1035 return getWidth(); 1036 } else { 1037 return getWidth() - getVerticalScrollbarWidth(); 1038 } 1039 } 1040 1041 /* 1042 * returns the height of the titlebarview (if any). Does not care about 1043 * scrolling 1044 */ 1045 private int getTitleHeight() { 1046 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1047 } 1048 1049 /* 1050 * Return the amount of the titlebarview (if any) that is visible 1051 */ 1052 private int getVisibleTitleHeight() { 1053 // need to restrict mScrollY due to over scroll 1054 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1055 } 1056 1057 /* 1058 * Return the height of the view where the content of WebView should render 1059 * to. Note that this excludes mTitleBar, if there is one. 1060 * Note: this can be called from WebCoreThread. 1061 */ 1062 /* package */ int getViewHeight() { 1063 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1064 } 1065 1066 private int getViewHeightWithTitle() { 1067 int height = getHeight(); 1068 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1069 height -= getHorizontalScrollbarHeight(); 1070 } 1071 return height; 1072 } 1073 1074 /** 1075 * @return The SSL certificate for the main top-level page or null if 1076 * there is no certificate (the site is not secure). 1077 */ 1078 public SslCertificate getCertificate() { 1079 return mCertificate; 1080 } 1081 1082 /** 1083 * Sets the SSL certificate for the main top-level page. 1084 */ 1085 public void setCertificate(SslCertificate certificate) { 1086 // here, the certificate can be null (if the site is not secure) 1087 mCertificate = certificate; 1088 } 1089 1090 //------------------------------------------------------------------------- 1091 // Methods called by activity 1092 //------------------------------------------------------------------------- 1093 1094 /** 1095 * Save the username and password for a particular host in the WebView's 1096 * internal database. 1097 * @param host The host that required the credentials. 1098 * @param username The username for the given host. 1099 * @param password The password for the given host. 1100 */ 1101 public void savePassword(String host, String username, String password) { 1102 mDatabase.setUsernamePassword(host, username, password); 1103 } 1104 1105 /** 1106 * Set the HTTP authentication credentials for a given host and realm. 1107 * 1108 * @param host The host for the credentials. 1109 * @param realm The realm for the credentials. 1110 * @param username The username for the password. If it is null, it means 1111 * password can't be saved. 1112 * @param password The password 1113 */ 1114 public void setHttpAuthUsernamePassword(String host, String realm, 1115 String username, String password) { 1116 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1117 } 1118 1119 /** 1120 * Retrieve the HTTP authentication username and password for a given 1121 * host & realm pair 1122 * 1123 * @param host The host for which the credentials apply. 1124 * @param realm The realm for which the credentials apply. 1125 * @return String[] if found, String[0] is username, which can be null and 1126 * String[1] is password. Return null if it can't find anything. 1127 */ 1128 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1129 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1130 } 1131 1132 /** 1133 * Destroy the internal state of the WebView. This method should be called 1134 * after the WebView has been removed from the view system. No other 1135 * methods may be called on a WebView after destroy. 1136 */ 1137 public void destroy() { 1138 clearTextEntry(false); 1139 if (mWebViewCore != null) { 1140 // Set the handlers to null before destroying WebViewCore so no 1141 // more messages will be posted. 1142 mCallbackProxy.setWebViewClient(null); 1143 mCallbackProxy.setWebChromeClient(null); 1144 // Tell WebViewCore to destroy itself 1145 synchronized (this) { 1146 WebViewCore webViewCore = mWebViewCore; 1147 mWebViewCore = null; // prevent using partial webViewCore 1148 webViewCore.destroy(); 1149 } 1150 // Remove any pending messages that might not be serviced yet. 1151 mPrivateHandler.removeCallbacksAndMessages(null); 1152 mCallbackProxy.removeCallbacksAndMessages(null); 1153 // Wake up the WebCore thread just in case it is waiting for a 1154 // javascript dialog. 1155 synchronized (mCallbackProxy) { 1156 mCallbackProxy.notify(); 1157 } 1158 } 1159 if (mNativeClass != 0) { 1160 nativeDestroy(); 1161 mNativeClass = 0; 1162 } 1163 } 1164 1165 /** 1166 * Enables platform notifications of data state and proxy changes. 1167 */ 1168 public static void enablePlatformNotifications() { 1169 Network.enablePlatformNotifications(); 1170 } 1171 1172 /** 1173 * If platform notifications are enabled, this should be called 1174 * from the Activity's onPause() or onStop(). 1175 */ 1176 public static void disablePlatformNotifications() { 1177 Network.disablePlatformNotifications(); 1178 } 1179 1180 /** 1181 * Sets JavaScript engine flags. 1182 * 1183 * @param flags JS engine flags in a String 1184 * 1185 * @hide pending API solidification 1186 */ 1187 public void setJsFlags(String flags) { 1188 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1189 } 1190 1191 /** 1192 * Inform WebView of the network state. This is used to set 1193 * the javascript property window.navigator.isOnline and 1194 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1195 * @param networkUp boolean indicating if network is available 1196 */ 1197 public void setNetworkAvailable(boolean networkUp) { 1198 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1199 networkUp ? 1 : 0, 0); 1200 } 1201 1202 /** 1203 * Inform WebView about the current network type. 1204 * {@hide} 1205 */ 1206 public void setNetworkType(String type, String subtype) { 1207 Map<String, String> map = new HashMap<String, String>(); 1208 map.put("type", type); 1209 map.put("subtype", subtype); 1210 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1211 } 1212 /** 1213 * Save the state of this WebView used in 1214 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1215 * method no longer stores the display data for this WebView. The previous 1216 * behavior could potentially leak files if {@link #restoreState} was never 1217 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1218 * and restoring the display data. 1219 * @param outState The Bundle to store the WebView state. 1220 * @return The same copy of the back/forward list used to save the state. If 1221 * saveState fails, the returned list will be null. 1222 * @see #savePicture 1223 * @see #restorePicture 1224 */ 1225 public WebBackForwardList saveState(Bundle outState) { 1226 if (outState == null) { 1227 return null; 1228 } 1229 // We grab a copy of the back/forward list because a client of WebView 1230 // may have invalidated the history list by calling clearHistory. 1231 WebBackForwardList list = copyBackForwardList(); 1232 final int currentIndex = list.getCurrentIndex(); 1233 final int size = list.getSize(); 1234 // We should fail saving the state if the list is empty or the index is 1235 // not in a valid range. 1236 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1237 return null; 1238 } 1239 outState.putInt("index", currentIndex); 1240 // FIXME: This should just be a byte[][] instead of ArrayList but 1241 // Parcel.java does not have the code to handle multi-dimensional 1242 // arrays. 1243 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1244 for (int i = 0; i < size; i++) { 1245 WebHistoryItem item = list.getItemAtIndex(i); 1246 if (null == item) { 1247 // FIXME: this shouldn't happen 1248 // need to determine how item got set to null 1249 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1250 return null; 1251 } 1252 byte[] data = item.getFlattenedData(); 1253 if (data == null) { 1254 // It would be very odd to not have any data for a given history 1255 // item. And we will fail to rebuild the history list without 1256 // flattened data. 1257 return null; 1258 } 1259 history.add(data); 1260 } 1261 outState.putSerializable("history", history); 1262 if (mCertificate != null) { 1263 outState.putBundle("certificate", 1264 SslCertificate.saveState(mCertificate)); 1265 } 1266 return list; 1267 } 1268 1269 /** 1270 * Save the current display data to the Bundle given. Used in conjunction 1271 * with {@link #saveState}. 1272 * @param b A Bundle to store the display data. 1273 * @param dest The file to store the serialized picture data. Will be 1274 * overwritten with this WebView's picture data. 1275 * @return True if the picture was successfully saved. 1276 */ 1277 public boolean savePicture(Bundle b, File dest) { 1278 if (dest == null || b == null) { 1279 return false; 1280 } 1281 final Picture p = capturePicture(); 1282 try { 1283 final FileOutputStream out = new FileOutputStream(dest); 1284 p.writeToStream(out); 1285 out.close(); 1286 // now update the bundle 1287 b.putInt("scrollX", mScrollX); 1288 b.putInt("scrollY", mScrollY); 1289 b.putFloat("scale", mActualScale); 1290 b.putFloat("textwrapScale", mTextWrapScale); 1291 b.putBoolean("overview", mInZoomOverview); 1292 return true; 1293 } catch (FileNotFoundException e){ 1294 e.printStackTrace(); 1295 } catch (IOException e) { 1296 e.printStackTrace(); 1297 } catch (RuntimeException e) { 1298 e.printStackTrace(); 1299 } 1300 return false; 1301 } 1302 1303 /** 1304 * Restore the display data that was save in {@link #savePicture}. Used in 1305 * conjunction with {@link #restoreState}. 1306 * @param b A Bundle containing the saved display data. 1307 * @param src The file where the picture data was stored. 1308 * @return True if the picture was successfully restored. 1309 */ 1310 public boolean restorePicture(Bundle b, File src) { 1311 if (src == null || b == null) { 1312 return false; 1313 } 1314 if (src.exists()) { 1315 Picture p = null; 1316 try { 1317 final FileInputStream in = new FileInputStream(src); 1318 p = Picture.createFromStream(in); 1319 in.close(); 1320 } catch (FileNotFoundException e){ 1321 e.printStackTrace(); 1322 } catch (RuntimeException e) { 1323 e.printStackTrace(); 1324 } catch (IOException e) { 1325 e.printStackTrace(); 1326 } 1327 if (p != null) { 1328 int sx = b.getInt("scrollX", 0); 1329 int sy = b.getInt("scrollY", 0); 1330 float scale = b.getFloat("scale", 1.0f); 1331 mDrawHistory = true; 1332 mHistoryPicture = p; 1333 mScrollX = sx; 1334 mScrollY = sy; 1335 mHistoryWidth = Math.round(p.getWidth() * scale); 1336 mHistoryHeight = Math.round(p.getHeight() * scale); 1337 // as getWidth() / getHeight() of the view are not 1338 // available yet, set up mActualScale, so that when 1339 // onSizeChanged() is called, the rest will be set 1340 // correctly 1341 mActualScale = scale; 1342 mInvActualScale = 1 / scale; 1343 mTextWrapScale = b.getFloat("textwrapScale", scale); 1344 mInZoomOverview = b.getBoolean("overview"); 1345 invalidate(); 1346 return true; 1347 } 1348 } 1349 return false; 1350 } 1351 1352 /** 1353 * Restore the state of this WebView from the given map used in 1354 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1355 * be called to restore the state of the WebView before using the object. If 1356 * it is called after the WebView has had a chance to build state (load 1357 * pages, create a back/forward list, etc.) there may be undesirable 1358 * side-effects. Please note that this method no longer restores the 1359 * display data for this WebView. See {@link #savePicture} and {@link 1360 * #restorePicture} for saving and restoring the display data. 1361 * @param inState The incoming Bundle of state. 1362 * @return The restored back/forward list or null if restoreState failed. 1363 * @see #savePicture 1364 * @see #restorePicture 1365 */ 1366 public WebBackForwardList restoreState(Bundle inState) { 1367 WebBackForwardList returnList = null; 1368 if (inState == null) { 1369 return returnList; 1370 } 1371 if (inState.containsKey("index") && inState.containsKey("history")) { 1372 mCertificate = SslCertificate.restoreState( 1373 inState.getBundle("certificate")); 1374 1375 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1376 final int index = inState.getInt("index"); 1377 // We can't use a clone of the list because we need to modify the 1378 // shared copy, so synchronize instead to prevent concurrent 1379 // modifications. 1380 synchronized (list) { 1381 final List<byte[]> history = 1382 (List<byte[]>) inState.getSerializable("history"); 1383 final int size = history.size(); 1384 // Check the index bounds so we don't crash in native code while 1385 // restoring the history index. 1386 if (index < 0 || index >= size) { 1387 return null; 1388 } 1389 for (int i = 0; i < size; i++) { 1390 byte[] data = history.remove(0); 1391 if (data == null) { 1392 // If we somehow have null data, we cannot reconstruct 1393 // the item and thus our history list cannot be rebuilt. 1394 return null; 1395 } 1396 WebHistoryItem item = new WebHistoryItem(data); 1397 list.addHistoryItem(item); 1398 } 1399 // Grab the most recent copy to return to the caller. 1400 returnList = copyBackForwardList(); 1401 // Update the copy to have the correct index. 1402 returnList.setCurrentIndex(index); 1403 } 1404 // Remove all pending messages because we are restoring previous 1405 // state. 1406 mWebViewCore.removeMessages(); 1407 // Send a restore state message. 1408 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1409 } 1410 return returnList; 1411 } 1412 1413 /** 1414 * Load the given url with the extra headers. 1415 * @param url The url of the resource to load. 1416 * @param extraHeaders The extra headers sent with this url. This should not 1417 * include the common headers like "user-agent". If it does, it 1418 * will be replaced by the intrinsic value of the WebView. 1419 */ 1420 public void loadUrl(String url, Map<String, String> extraHeaders) { 1421 switchOutDrawHistory(); 1422 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1423 arg.mUrl = url; 1424 arg.mExtraHeaders = extraHeaders; 1425 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1426 clearTextEntry(false); 1427 } 1428 1429 /** 1430 * Load the given url. 1431 * @param url The url of the resource to load. 1432 */ 1433 public void loadUrl(String url) { 1434 if (url == null) { 1435 return; 1436 } 1437 loadUrl(url, null); 1438 } 1439 1440 /** 1441 * Load the url with postData using "POST" method into the WebView. If url 1442 * is not a network url, it will be loaded with {link 1443 * {@link #loadUrl(String)} instead. 1444 * 1445 * @param url The url of the resource to load. 1446 * @param postData The data will be passed to "POST" request. 1447 */ 1448 public void postUrl(String url, byte[] postData) { 1449 if (URLUtil.isNetworkUrl(url)) { 1450 switchOutDrawHistory(); 1451 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1452 arg.mUrl = url; 1453 arg.mPostData = postData; 1454 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1455 clearTextEntry(false); 1456 } else { 1457 loadUrl(url); 1458 } 1459 } 1460 1461 /** 1462 * Load the given data into the WebView. This will load the data into 1463 * WebView using the data: scheme. Content loaded through this mechanism 1464 * does not have the ability to load content from the network. 1465 * @param data A String of data in the given encoding. 1466 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1467 * @param encoding The encoding of the data. i.e. utf-8, base64 1468 */ 1469 public void loadData(String data, String mimeType, String encoding) { 1470 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1471 } 1472 1473 /** 1474 * Load the given data into the WebView, use the provided URL as the base 1475 * URL for the content. The base URL is the URL that represents the page 1476 * that is loaded through this interface. As such, it is used for the 1477 * history entry and to resolve any relative URLs. The failUrl is used if 1478 * browser fails to load the data provided. If it is empty or null, and the 1479 * load fails, then no history entry is created. 1480 * <p> 1481 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1482 * files through "file:///android_asset/" for the sub resources is more 1483 * restricted. If you provide null or empty string as baseUrl, you won't be 1484 * able to access asset files. If the baseUrl is anything other than 1485 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1486 * sub resources. 1487 * 1488 * @param baseUrl Url to resolve relative paths with, if null defaults to 1489 * "about:blank" 1490 * @param data A String of data in the given encoding. 1491 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1492 * defaults to "text/html" 1493 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1494 * @param failUrl URL to use if the content fails to load or null. 1495 */ 1496 public void loadDataWithBaseURL(String baseUrl, String data, 1497 String mimeType, String encoding, String failUrl) { 1498 1499 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1500 loadData(data, mimeType, encoding); 1501 return; 1502 } 1503 switchOutDrawHistory(); 1504 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1505 arg.mBaseUrl = baseUrl; 1506 arg.mData = data; 1507 arg.mMimeType = mimeType; 1508 arg.mEncoding = encoding; 1509 arg.mFailUrl = failUrl; 1510 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1511 clearTextEntry(false); 1512 } 1513 1514 /** 1515 * Stop the current load. 1516 */ 1517 public void stopLoading() { 1518 // TODO: should we clear all the messages in the queue before sending 1519 // STOP_LOADING? 1520 switchOutDrawHistory(); 1521 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1522 } 1523 1524 /** 1525 * Reload the current url. 1526 */ 1527 public void reload() { 1528 clearTextEntry(false); 1529 switchOutDrawHistory(); 1530 mWebViewCore.sendMessage(EventHub.RELOAD); 1531 } 1532 1533 /** 1534 * Return true if this WebView has a back history item. 1535 * @return True iff this WebView has a back history item. 1536 */ 1537 public boolean canGoBack() { 1538 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1539 synchronized (l) { 1540 if (l.getClearPending()) { 1541 return false; 1542 } else { 1543 return l.getCurrentIndex() > 0; 1544 } 1545 } 1546 } 1547 1548 /** 1549 * Go back in the history of this WebView. 1550 */ 1551 public void goBack() { 1552 goBackOrForward(-1); 1553 } 1554 1555 /** 1556 * Return true if this WebView has a forward history item. 1557 * @return True iff this Webview has a forward history item. 1558 */ 1559 public boolean canGoForward() { 1560 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1561 synchronized (l) { 1562 if (l.getClearPending()) { 1563 return false; 1564 } else { 1565 return l.getCurrentIndex() < l.getSize() - 1; 1566 } 1567 } 1568 } 1569 1570 /** 1571 * Go forward in the history of this WebView. 1572 */ 1573 public void goForward() { 1574 goBackOrForward(1); 1575 } 1576 1577 /** 1578 * Return true if the page can go back or forward the given 1579 * number of steps. 1580 * @param steps The negative or positive number of steps to move the 1581 * history. 1582 */ 1583 public boolean canGoBackOrForward(int steps) { 1584 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1585 synchronized (l) { 1586 if (l.getClearPending()) { 1587 return false; 1588 } else { 1589 int newIndex = l.getCurrentIndex() + steps; 1590 return newIndex >= 0 && newIndex < l.getSize(); 1591 } 1592 } 1593 } 1594 1595 /** 1596 * Go to the history item that is the number of steps away from 1597 * the current item. Steps is negative if backward and positive 1598 * if forward. 1599 * @param steps The number of steps to take back or forward in the back 1600 * forward list. 1601 */ 1602 public void goBackOrForward(int steps) { 1603 goBackOrForward(steps, false); 1604 } 1605 1606 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1607 // every time we go back or forward, we want to reset the 1608 // WebView certificate: 1609 // if the new site is secure, we will reload it and get a 1610 // new certificate set; 1611 // if the new site is not secure, the certificate must be 1612 // null, and that will be the case 1613 mCertificate = null; 1614 if (steps != 0) { 1615 clearTextEntry(false); 1616 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1617 ignoreSnapshot ? 1 : 0); 1618 } 1619 } 1620 1621 private boolean extendScroll(int y) { 1622 int finalY = mScroller.getFinalY(); 1623 int newY = pinLocY(finalY + y); 1624 if (newY == finalY) return false; 1625 mScroller.setFinalY(newY); 1626 mScroller.extendDuration(computeDuration(0, y)); 1627 return true; 1628 } 1629 1630 /** 1631 * Scroll the contents of the view up by half the view size 1632 * @param top true to jump to the top of the page 1633 * @return true if the page was scrolled 1634 */ 1635 public boolean pageUp(boolean top) { 1636 if (mNativeClass == 0) { 1637 return false; 1638 } 1639 nativeClearCursor(); // start next trackball movement from page edge 1640 if (top) { 1641 // go to the top of the document 1642 return pinScrollTo(mScrollX, 0, true, 0); 1643 } 1644 // Page up 1645 int h = getHeight(); 1646 int y; 1647 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1648 y = -h + PAGE_SCROLL_OVERLAP; 1649 } else { 1650 y = -h / 2; 1651 } 1652 mUserScroll = true; 1653 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1654 : extendScroll(y); 1655 } 1656 1657 /** 1658 * Scroll the contents of the view down by half the page size 1659 * @param bottom true to jump to bottom of page 1660 * @return true if the page was scrolled 1661 */ 1662 public boolean pageDown(boolean bottom) { 1663 if (mNativeClass == 0) { 1664 return false; 1665 } 1666 nativeClearCursor(); // start next trackball movement from page edge 1667 if (bottom) { 1668 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1669 } 1670 // Page down. 1671 int h = getHeight(); 1672 int y; 1673 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1674 y = h - PAGE_SCROLL_OVERLAP; 1675 } else { 1676 y = h / 2; 1677 } 1678 mUserScroll = true; 1679 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1680 : extendScroll(y); 1681 } 1682 1683 /** 1684 * Clear the view so that onDraw() will draw nothing but white background, 1685 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1686 */ 1687 public void clearView() { 1688 mContentWidth = 0; 1689 mContentHeight = 0; 1690 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1691 } 1692 1693 /** 1694 * Return a new picture that captures the current display of the webview. 1695 * This is a copy of the display, and will be unaffected if the webview 1696 * later loads a different URL. 1697 * 1698 * @return a picture containing the current contents of the view. Note this 1699 * picture is of the entire document, and is not restricted to the 1700 * bounds of the view. 1701 */ 1702 public Picture capturePicture() { 1703 if (null == mWebViewCore) return null; // check for out of memory tab 1704 return mWebViewCore.copyContentPicture(); 1705 } 1706 1707 /** 1708 * Return true if the browser is displaying a TextView for text input. 1709 */ 1710 private boolean inEditingMode() { 1711 return mWebTextView != null && mWebTextView.getParent() != null 1712 && mWebTextView.hasFocus(); 1713 } 1714 1715 /** 1716 * Remove the WebTextView. 1717 * @param disableFocusController If true, send a message to webkit 1718 * disabling the focus controller, so the caret stops blinking. 1719 */ 1720 private void clearTextEntry(boolean disableFocusController) { 1721 if (inEditingMode()) { 1722 mWebTextView.remove(); 1723 if (disableFocusController) { 1724 setFocusControllerInactive(); 1725 } 1726 } 1727 } 1728 1729 /** 1730 * Return the current scale of the WebView 1731 * @return The current scale. 1732 */ 1733 public float getScale() { 1734 return mActualScale; 1735 } 1736 1737 /** 1738 * Set the initial scale for the WebView. 0 means default. If 1739 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1740 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1741 * WebView starts will this value as initial scale. 1742 * 1743 * @param scaleInPercent The initial scale in percent. 1744 */ 1745 public void setInitialScale(int scaleInPercent) { 1746 mInitialScaleInPercent = scaleInPercent; 1747 } 1748 1749 /** 1750 * Invoke the graphical zoom picker widget for this WebView. This will 1751 * result in the zoom widget appearing on the screen to control the zoom 1752 * level of this WebView. 1753 */ 1754 public void invokeZoomPicker() { 1755 if (!getSettings().supportZoom()) { 1756 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1757 return; 1758 } 1759 clearTextEntry(false); 1760 if (getSettings().getBuiltInZoomControls()) { 1761 mZoomButtonsController.setVisible(true); 1762 } else { 1763 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1764 mPrivateHandler.postDelayed(mZoomControlRunnable, 1765 ZOOM_CONTROLS_TIMEOUT); 1766 } 1767 } 1768 1769 /** 1770 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1771 * is found and the anchor has a non-javascript url, the HitTestResult type 1772 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1773 * anchor does not have a url or if it is a javascript url, the type will 1774 * be UNKNOWN_TYPE and the url has to be retrieved through 1775 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1776 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1777 * the "extra" field. A type of 1778 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1779 * a child node. If a phone number is found, the HitTestResult type is set 1780 * to PHONE_TYPE and the phone number is set in the "extra" field of 1781 * HitTestResult. If a map address is found, the HitTestResult type is set 1782 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1783 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1784 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1785 * HitTestResult type is set to UNKNOWN_TYPE. 1786 */ 1787 public HitTestResult getHitTestResult() { 1788 if (mNativeClass == 0) { 1789 return null; 1790 } 1791 1792 HitTestResult result = new HitTestResult(); 1793 if (nativeHasCursorNode()) { 1794 if (nativeCursorIsTextInput()) { 1795 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1796 } else { 1797 String text = nativeCursorText(); 1798 if (text != null) { 1799 if (text.startsWith(SCHEME_TEL)) { 1800 result.setType(HitTestResult.PHONE_TYPE); 1801 result.setExtra(text.substring(SCHEME_TEL.length())); 1802 } else if (text.startsWith(SCHEME_MAILTO)) { 1803 result.setType(HitTestResult.EMAIL_TYPE); 1804 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1805 } else if (text.startsWith(SCHEME_GEO)) { 1806 result.setType(HitTestResult.GEO_TYPE); 1807 result.setExtra(URLDecoder.decode(text 1808 .substring(SCHEME_GEO.length()))); 1809 } else if (nativeCursorIsAnchor()) { 1810 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1811 result.setExtra(text); 1812 } 1813 } 1814 } 1815 } 1816 int type = result.getType(); 1817 if (type == HitTestResult.UNKNOWN_TYPE 1818 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1819 // Now check to see if it is an image. 1820 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1821 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1822 String text = nativeImageURI(contentX, contentY); 1823 if (text != null) { 1824 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1825 HitTestResult.IMAGE_TYPE : 1826 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1827 result.setExtra(text); 1828 } 1829 } 1830 return result; 1831 } 1832 1833 // Called by JNI when the DOM has changed the focus. Clear the focus so 1834 // that new keys will go to the newly focused field 1835 private void domChangedFocus() { 1836 if (inEditingMode()) { 1837 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 1838 } 1839 } 1840 /** 1841 * Request the href of an anchor element due to getFocusNodePath returning 1842 * "href." If hrefMsg is null, this method returns immediately and does not 1843 * dispatch hrefMsg to its target. 1844 * 1845 * @param hrefMsg This message will be dispatched with the result of the 1846 * request as the data member with "url" as key. The result can 1847 * be null. 1848 */ 1849 // FIXME: API change required to change the name of this function. We now 1850 // look at the cursor node, and not the focus node. Also, what is 1851 // getFocusNodePath? 1852 public void requestFocusNodeHref(Message hrefMsg) { 1853 if (hrefMsg == null || mNativeClass == 0) { 1854 return; 1855 } 1856 if (nativeCursorIsAnchor()) { 1857 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1858 nativeCursorFramePointer(), nativeCursorNodePointer(), 1859 hrefMsg); 1860 } 1861 } 1862 1863 /** 1864 * Request the url of the image last touched by the user. msg will be sent 1865 * to its target with a String representing the url as its object. 1866 * 1867 * @param msg This message will be dispatched with the result of the request 1868 * as the data member with "url" as key. The result can be null. 1869 */ 1870 public void requestImageRef(Message msg) { 1871 if (0 == mNativeClass) return; // client isn't initialized 1872 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1873 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1874 String ref = nativeImageURI(contentX, contentY); 1875 Bundle data = msg.getData(); 1876 data.putString("url", ref); 1877 msg.setData(data); 1878 msg.sendToTarget(); 1879 } 1880 1881 private static int pinLoc(int x, int viewMax, int docMax) { 1882// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1883 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1884 // pin the short document to the top/left of the screen 1885 x = 0; 1886// Log.d(LOGTAG, "--- center " + x); 1887 } else if (x < 0) { 1888 x = 0; 1889// Log.d(LOGTAG, "--- zero"); 1890 } else if (x + viewMax > docMax) { 1891 x = docMax - viewMax; 1892// Log.d(LOGTAG, "--- pin " + x); 1893 } 1894 return x; 1895 } 1896 1897 // Expects x in view coordinates 1898 private int pinLocX(int x) { 1899 if (mInOverScrollMode) return x; 1900 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1901 } 1902 1903 // Expects y in view coordinates 1904 private int pinLocY(int y) { 1905 if (mInOverScrollMode) return y; 1906 int titleH = getTitleHeight(); 1907 // if the titlebar is still visible, just pin against 0 1908 if (y <= titleH) { 1909 return Math.max(y, 0); 1910 } 1911 // convert to 0-based coordinate (subtract the title height) 1912 // pin(), and then add the title height back in 1913 return pinLoc(y - titleH, getViewHeight(), 1914 computeVerticalScrollRange()) + titleH; 1915 } 1916 1917 /** 1918 * A title bar which is embedded in this WebView, and scrolls along with it 1919 * vertically, but not horizontally. 1920 */ 1921 private View mTitleBar; 1922 1923 /** 1924 * Since we draw the title bar ourselves, we removed the shadow from the 1925 * browser's activity. We do want a shadow at the bottom of the title bar, 1926 * or at the top of the screen if the title bar is not visible. This 1927 * drawable serves that purpose. 1928 */ 1929 private Drawable mTitleShadow; 1930 1931 /** 1932 * Add or remove a title bar to be embedded into the WebView, and scroll 1933 * along with it vertically, while remaining in view horizontally. Pass 1934 * null to remove the title bar from the WebView, and return to drawing 1935 * the WebView normally without translating to account for the title bar. 1936 * @hide 1937 */ 1938 public void setEmbeddedTitleBar(View v) { 1939 if (mTitleBar == v) return; 1940 if (mTitleBar != null) { 1941 removeView(mTitleBar); 1942 } 1943 if (null != v) { 1944 addView(v, new AbsoluteLayout.LayoutParams( 1945 ViewGroup.LayoutParams.MATCH_PARENT, 1946 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1947 if (mTitleShadow == null) { 1948 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1949 com.android.internal.R.drawable.title_bar_shadow); 1950 } 1951 } 1952 mTitleBar = v; 1953 } 1954 1955 /** 1956 * Given a distance in view space, convert it to content space. Note: this 1957 * does not reflect translation, just scaling, so this should not be called 1958 * with coordinates, but should be called for dimensions like width or 1959 * height. 1960 */ 1961 private int viewToContentDimension(int d) { 1962 return Math.round(d * mInvActualScale); 1963 } 1964 1965 /** 1966 * Given an x coordinate in view space, convert it to content space. Also 1967 * may be used for absolute heights (such as for the WebTextView's 1968 * textSize, which is unaffected by the height of the title bar). 1969 */ 1970 /*package*/ int viewToContentX(int x) { 1971 return viewToContentDimension(x); 1972 } 1973 1974 /** 1975 * Given a y coordinate in view space, convert it to content space. 1976 * Takes into account the height of the title bar if there is one 1977 * embedded into the WebView. 1978 */ 1979 /*package*/ int viewToContentY(int y) { 1980 return viewToContentDimension(y - getTitleHeight()); 1981 } 1982 1983 /** 1984 * Given a distance in content space, convert it to view space. Note: this 1985 * does not reflect translation, just scaling, so this should not be called 1986 * with coordinates, but should be called for dimensions like width or 1987 * height. 1988 */ 1989 /*package*/ int contentToViewDimension(int d) { 1990 return Math.round(d * mActualScale); 1991 } 1992 1993 /** 1994 * Given an x coordinate in content space, convert it to view 1995 * space. 1996 */ 1997 /*package*/ int contentToViewX(int x) { 1998 return contentToViewDimension(x); 1999 } 2000 2001 /** 2002 * Given a y coordinate in content space, convert it to view 2003 * space. Takes into account the height of the title bar. 2004 */ 2005 /*package*/ int contentToViewY(int y) { 2006 return contentToViewDimension(y) + getTitleHeight(); 2007 } 2008 2009 private Rect contentToViewRect(Rect x) { 2010 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2011 contentToViewX(x.right), contentToViewY(x.bottom)); 2012 } 2013 2014 /* To invalidate a rectangle in content coordinates, we need to transform 2015 the rect into view coordinates, so we can then call invalidate(...). 2016 2017 Normally, we would just call contentToView[XY](...), which eventually 2018 calls Math.round(coordinate * mActualScale). However, for invalidates, 2019 we need to account for the slop that occurs with antialiasing. To 2020 address that, we are a little more liberal in the size of the rect that 2021 we invalidate. 2022 2023 This liberal calculation calls floor() for the top/left, and ceil() for 2024 the bottom/right coordinates. This catches the possible extra pixels of 2025 antialiasing that we might have missed with just round(). 2026 */ 2027 2028 // Called by JNI to invalidate the View, given rectangle coordinates in 2029 // content space 2030 private void viewInvalidate(int l, int t, int r, int b) { 2031 final float scale = mActualScale; 2032 final int dy = getTitleHeight(); 2033 invalidate((int)Math.floor(l * scale), 2034 (int)Math.floor(t * scale) + dy, 2035 (int)Math.ceil(r * scale), 2036 (int)Math.ceil(b * scale) + dy); 2037 } 2038 2039 // Called by JNI to invalidate the View after a delay, given rectangle 2040 // coordinates in content space 2041 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2042 final float scale = mActualScale; 2043 final int dy = getTitleHeight(); 2044 postInvalidateDelayed(delay, 2045 (int)Math.floor(l * scale), 2046 (int)Math.floor(t * scale) + dy, 2047 (int)Math.ceil(r * scale), 2048 (int)Math.ceil(b * scale) + dy); 2049 } 2050 2051 private void invalidateContentRect(Rect r) { 2052 viewInvalidate(r.left, r.top, r.right, r.bottom); 2053 } 2054 2055 // stop the scroll animation, and don't let a subsequent fling add 2056 // to the existing velocity 2057 private void abortAnimation() { 2058 mScroller.abortAnimation(); 2059 mLastVelocity = 0; 2060 } 2061 2062 /* call from webcoreview.draw(), so we're still executing in the UI thread 2063 */ 2064 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2065 2066 // premature data from webkit, ignore 2067 if ((w | h) == 0) { 2068 return; 2069 } 2070 2071 // don't abort a scroll animation if we didn't change anything 2072 if (mContentWidth != w || mContentHeight != h) { 2073 // record new dimensions 2074 mContentWidth = w; 2075 mContentHeight = h; 2076 // If history Picture is drawn, don't update scroll. They will be 2077 // updated when we get out of that mode. 2078 if (!mDrawHistory) { 2079 // repin our scroll, taking into account the new content size 2080 int oldX = mScrollX; 2081 int oldY = mScrollY; 2082 mScrollX = pinLocX(mScrollX); 2083 mScrollY = pinLocY(mScrollY); 2084 if (oldX != mScrollX || oldY != mScrollY) { 2085 sendOurVisibleRect(); 2086 } 2087 if (!mScroller.isFinished()) { 2088 // We are in the middle of a scroll. Repin the final scroll 2089 // position. 2090 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2091 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2092 } 2093 } 2094 } 2095 contentSizeChanged(updateLayout); 2096 } 2097 2098 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 2099 boolean force) { 2100 if (scale < mMinZoomScale) { 2101 scale = mMinZoomScale; 2102 // set mInZoomOverview for non mobile sites 2103 if (scale < mDefaultScale) mInZoomOverview = true; 2104 } else if (scale > mMaxZoomScale) { 2105 scale = mMaxZoomScale; 2106 } 2107 if (updateTextWrapScale) { 2108 mTextWrapScale = scale; 2109 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 2110 mLastHeightSent = 0; 2111 } 2112 if (scale != mActualScale || force) { 2113 if (mDrawHistory) { 2114 // If history Picture is drawn, don't update scroll. They will 2115 // be updated when we get out of that mode. 2116 if (scale != mActualScale && !mPreviewZoomOnly) { 2117 mCallbackProxy.onScaleChanged(mActualScale, scale); 2118 } 2119 mActualScale = scale; 2120 mInvActualScale = 1 / scale; 2121 sendViewSizeZoom(); 2122 } else { 2123 // update our scroll so we don't appear to jump 2124 // i.e. keep the center of the doc in the center of the view 2125 2126 int oldX = mScrollX; 2127 int oldY = mScrollY; 2128 float ratio = scale * mInvActualScale; // old inverse 2129 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2130 float sy = ratio * oldY + (ratio - 1) 2131 * (mZoomCenterY - getTitleHeight()); 2132 2133 // now update our new scale and inverse 2134 if (scale != mActualScale && !mPreviewZoomOnly) { 2135 mCallbackProxy.onScaleChanged(mActualScale, scale); 2136 } 2137 mActualScale = scale; 2138 mInvActualScale = 1 / scale; 2139 2140 // Scale all the child views 2141 mViewManager.scaleAll(); 2142 2143 // as we don't have animation for scaling, don't do animation 2144 // for scrolling, as it causes weird intermediate state 2145 // pinScrollTo(Math.round(sx), Math.round(sy)); 2146 mScrollX = pinLocX(Math.round(sx)); 2147 mScrollY = pinLocY(Math.round(sy)); 2148 2149 // update webkit 2150 sendViewSizeZoom(); 2151 sendOurVisibleRect(); 2152 } 2153 } 2154 } 2155 2156 // Used to avoid sending many visible rect messages. 2157 private Rect mLastVisibleRectSent; 2158 private Rect mLastGlobalRect; 2159 2160 private Rect sendOurVisibleRect() { 2161 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2162 2163 Rect rect = new Rect(); 2164 calcOurContentVisibleRect(rect); 2165 // Rect.equals() checks for null input. 2166 if (!rect.equals(mLastVisibleRectSent)) { 2167 Point pos = new Point(rect.left, rect.top); 2168 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2169 nativeMoveGeneration(), 0, pos); 2170 mLastVisibleRectSent = rect; 2171 } 2172 Rect globalRect = new Rect(); 2173 if (getGlobalVisibleRect(globalRect) 2174 && !globalRect.equals(mLastGlobalRect)) { 2175 if (DebugFlags.WEB_VIEW) { 2176 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2177 + globalRect.top + ",r=" + globalRect.right + ",b=" 2178 + globalRect.bottom); 2179 } 2180 // TODO: the global offset is only used by windowRect() 2181 // in ChromeClientAndroid ; other clients such as touch 2182 // and mouse events could return view + screen relative points. 2183 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2184 mLastGlobalRect = globalRect; 2185 } 2186 return rect; 2187 } 2188 2189 // Sets r to be the visible rectangle of our webview in view coordinates 2190 private void calcOurVisibleRect(Rect r) { 2191 Point p = new Point(); 2192 getGlobalVisibleRect(r, p); 2193 r.offset(-p.x, -p.y); 2194 if (mFindIsUp) { 2195 r.bottom -= mFindHeight; 2196 } 2197 } 2198 2199 // Sets r to be our visible rectangle in content coordinates 2200 private void calcOurContentVisibleRect(Rect r) { 2201 calcOurVisibleRect(r); 2202 // since we might overscroll, pin the rect to the bounds of the content 2203 r.left = Math.max(viewToContentX(r.left), 0); 2204 // viewToContentY will remove the total height of the title bar. Add 2205 // the visible height back in to account for the fact that if the title 2206 // bar is partially visible, the part of the visible rect which is 2207 // displaying our content is displaced by that amount. 2208 r.top = Math.max(viewToContentY(r.top + getVisibleTitleHeight()), 0); 2209 r.right = Math.min(viewToContentX(r.right), mContentWidth); 2210 r.bottom = Math.min(viewToContentY(r.bottom), mContentHeight); 2211 } 2212 2213 static class ViewSizeData { 2214 int mWidth; 2215 int mHeight; 2216 int mTextWrapWidth; 2217 int mAnchorX; 2218 int mAnchorY; 2219 float mScale; 2220 boolean mIgnoreHeight; 2221 } 2222 2223 /** 2224 * Compute unzoomed width and height, and if they differ from the last 2225 * values we sent, send them to webkit (to be used has new viewport) 2226 * 2227 * @return true if new values were sent 2228 */ 2229 private boolean sendViewSizeZoom() { 2230 if (mPreviewZoomOnly) return false; 2231 2232 int viewWidth = getViewWidth(); 2233 int newWidth = Math.round(viewWidth * mInvActualScale); 2234 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2235 /* 2236 * Because the native side may have already done a layout before the 2237 * View system was able to measure us, we have to send a height of 0 to 2238 * remove excess whitespace when we grow our width. This will trigger a 2239 * layout and a change in content size. This content size change will 2240 * mean that contentSizeChanged will either call this method directly or 2241 * indirectly from onSizeChanged. 2242 */ 2243 if (newWidth > mLastWidthSent && mWrapContent) { 2244 newHeight = 0; 2245 } 2246 // Avoid sending another message if the dimensions have not changed. 2247 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2248 ViewSizeData data = new ViewSizeData(); 2249 data.mWidth = newWidth; 2250 data.mHeight = newHeight; 2251 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2252 data.mScale = mActualScale; 2253 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2254 data.mAnchorX = mAnchorX; 2255 data.mAnchorY = mAnchorY; 2256 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2257 mLastWidthSent = newWidth; 2258 mLastHeightSent = newHeight; 2259 mAnchorX = mAnchorY = 0; 2260 return true; 2261 } 2262 return false; 2263 } 2264 2265 @Override 2266 protected int computeHorizontalScrollRange() { 2267 if (mDrawHistory) { 2268 return mHistoryWidth; 2269 } else { 2270 // to avoid rounding error caused unnecessary scrollbar, use floor 2271 return (int) Math.floor(mContentWidth * mActualScale); 2272 } 2273 } 2274 2275 @Override 2276 protected int computeVerticalScrollRange() { 2277 if (mDrawHistory) { 2278 return mHistoryHeight; 2279 } else { 2280 // to avoid rounding error caused unnecessary scrollbar, use floor 2281 return (int) Math.floor(mContentHeight * mActualScale); 2282 } 2283 } 2284 2285 @Override 2286 protected int computeVerticalScrollOffset() { 2287 return Math.max(mScrollY - getTitleHeight(), 0); 2288 } 2289 2290 @Override 2291 protected int computeVerticalScrollExtent() { 2292 return getViewHeight(); 2293 } 2294 2295 /** @hide */ 2296 @Override 2297 protected void onDrawVerticalScrollBar(Canvas canvas, 2298 Drawable scrollBar, 2299 int l, int t, int r, int b) { 2300 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2301 scrollBar.draw(canvas); 2302 } 2303 2304 @Override 2305 protected void onOverscrolled(int scrollX, int scrollY, boolean clampedX, 2306 boolean clampedY) { 2307 mInOverScrollMode = false; 2308 int maxX = computeMaxScrollX(); 2309 if (maxX == 0 && (Math.abs(mMinZoomScale - mMaxZoomScale) < 0.01f) 2310 || !getSettings().supportZoom() 2311 || !getSettings().getUseWideViewPort()) { 2312 // do not over scroll x if the page just fits the screen and it 2313 // can't zoom or the view doesn't use wide viewport 2314 scrollX = pinLocX(scrollX); 2315 } else if (scrollX < 0 || scrollX > maxX) { 2316 mInOverScrollMode = true; 2317 } 2318 if (scrollY < 0 || scrollY > computeMaxScrollY()) { 2319 mInOverScrollMode = true; 2320 } 2321 super.scrollTo(scrollX, scrollY); 2322 } 2323 2324 /** 2325 * Get the url for the current page. This is not always the same as the url 2326 * passed to WebViewClient.onPageStarted because although the load for 2327 * that url has begun, the current page may not have changed. 2328 * @return The url for the current page. 2329 */ 2330 public String getUrl() { 2331 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2332 return h != null ? h.getUrl() : null; 2333 } 2334 2335 /** 2336 * Get the original url for the current page. This is not always the same 2337 * as the url passed to WebViewClient.onPageStarted because although the 2338 * load for that url has begun, the current page may not have changed. 2339 * Also, there may have been redirects resulting in a different url to that 2340 * originally requested. 2341 * @return The url that was originally requested for the current page. 2342 */ 2343 public String getOriginalUrl() { 2344 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2345 return h != null ? h.getOriginalUrl() : null; 2346 } 2347 2348 /** 2349 * Get the title for the current page. This is the title of the current page 2350 * until WebViewClient.onReceivedTitle is called. 2351 * @return The title for the current page. 2352 */ 2353 public String getTitle() { 2354 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2355 return h != null ? h.getTitle() : null; 2356 } 2357 2358 /** 2359 * Get the favicon for the current page. This is the favicon of the current 2360 * page until WebViewClient.onReceivedIcon is called. 2361 * @return The favicon for the current page. 2362 */ 2363 public Bitmap getFavicon() { 2364 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2365 return h != null ? h.getFavicon() : null; 2366 } 2367 2368 /** 2369 * Get the touch icon url for the apple-touch-icon <link> element. 2370 * @hide 2371 */ 2372 public String getTouchIconUrl() { 2373 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2374 return h != null ? h.getTouchIconUrl() : null; 2375 } 2376 2377 /** 2378 * Get the progress for the current page. 2379 * @return The progress for the current page between 0 and 100. 2380 */ 2381 public int getProgress() { 2382 return mCallbackProxy.getProgress(); 2383 } 2384 2385 /** 2386 * @return the height of the HTML content. 2387 */ 2388 public int getContentHeight() { 2389 return mContentHeight; 2390 } 2391 2392 /** 2393 * @return the width of the HTML content. 2394 * @hide 2395 */ 2396 public int getContentWidth() { 2397 return mContentWidth; 2398 } 2399 2400 /** 2401 * Pause all layout, parsing, and javascript timers for all webviews. This 2402 * is a global requests, not restricted to just this webview. This can be 2403 * useful if the application has been paused. 2404 */ 2405 public void pauseTimers() { 2406 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2407 } 2408 2409 /** 2410 * Resume all layout, parsing, and javascript timers for all webviews. 2411 * This will resume dispatching all timers. 2412 */ 2413 public void resumeTimers() { 2414 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2415 } 2416 2417 /** 2418 * Call this to pause any extra processing associated with this view and 2419 * its associated DOM/plugins/javascript/etc. For example, if the view is 2420 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2421 * network traffic. When the view is again "active", call onResume(). 2422 * 2423 * Note that this differs from pauseTimers(), which affects all views/DOMs 2424 * @hide 2425 */ 2426 public void onPause() { 2427 if (!mIsPaused) { 2428 mIsPaused = true; 2429 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2430 } 2431 } 2432 2433 /** 2434 * Call this to balanace a previous call to onPause() 2435 * @hide 2436 */ 2437 public void onResume() { 2438 if (mIsPaused) { 2439 mIsPaused = false; 2440 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2441 } 2442 } 2443 2444 /** 2445 * Returns true if the view is paused, meaning onPause() was called. Calling 2446 * onResume() sets the paused state back to false. 2447 * @hide 2448 */ 2449 public boolean isPaused() { 2450 return mIsPaused; 2451 } 2452 2453 /** 2454 * Call this to inform the view that memory is low so that it can 2455 * free any available memory. 2456 */ 2457 public void freeMemory() { 2458 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2459 } 2460 2461 /** 2462 * Clear the resource cache. Note that the cache is per-application, so 2463 * this will clear the cache for all WebViews used. 2464 * 2465 * @param includeDiskFiles If false, only the RAM cache is cleared. 2466 */ 2467 public void clearCache(boolean includeDiskFiles) { 2468 // Note: this really needs to be a static method as it clears cache for all 2469 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2470 // we can't make this static. 2471 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2472 includeDiskFiles ? 1 : 0, 0); 2473 } 2474 2475 /** 2476 * Make sure that clearing the form data removes the adapter from the 2477 * currently focused textfield if there is one. 2478 */ 2479 public void clearFormData() { 2480 if (inEditingMode()) { 2481 AutoCompleteAdapter adapter = null; 2482 mWebTextView.setAdapterCustom(adapter); 2483 } 2484 } 2485 2486 /** 2487 * Tell the WebView to clear its internal back/forward list. 2488 */ 2489 public void clearHistory() { 2490 mCallbackProxy.getBackForwardList().setClearPending(); 2491 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2492 } 2493 2494 /** 2495 * Clear the SSL preferences table stored in response to proceeding with SSL 2496 * certificate errors. 2497 */ 2498 public void clearSslPreferences() { 2499 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2500 } 2501 2502 /** 2503 * Return the WebBackForwardList for this WebView. This contains the 2504 * back/forward list for use in querying each item in the history stack. 2505 * This is a copy of the private WebBackForwardList so it contains only a 2506 * snapshot of the current state. Multiple calls to this method may return 2507 * different objects. The object returned from this method will not be 2508 * updated to reflect any new state. 2509 */ 2510 public WebBackForwardList copyBackForwardList() { 2511 return mCallbackProxy.getBackForwardList().clone(); 2512 } 2513 2514 /* 2515 * Highlight and scroll to the next occurance of String in findAll. 2516 * Wraps the page infinitely, and scrolls. Must be called after 2517 * calling findAll. 2518 * 2519 * @param forward Direction to search. 2520 */ 2521 public void findNext(boolean forward) { 2522 if (0 == mNativeClass) return; // client isn't initialized 2523 nativeFindNext(forward); 2524 } 2525 2526 /* 2527 * Find all instances of find on the page and highlight them. 2528 * @param find String to find. 2529 * @return int The number of occurances of the String "find" 2530 * that were found. 2531 */ 2532 public int findAll(String find) { 2533 if (0 == mNativeClass) return 0; // client isn't initialized 2534 int result = find != null ? nativeFindAll(find.toLowerCase(), 2535 find.toUpperCase()) : 0; 2536 invalidate(); 2537 mLastFind = find; 2538 return result; 2539 } 2540 2541 /** 2542 * @hide 2543 */ 2544 public void setFindIsUp(boolean isUp) { 2545 mFindIsUp = isUp; 2546 if (isUp) { 2547 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2548 false); 2549 } 2550 if (0 == mNativeClass) return; // client isn't initialized 2551 nativeSetFindIsUp(isUp); 2552 } 2553 2554 // Used to know whether the find dialog is open. Affects whether 2555 // or not we draw the highlights for matches. 2556 private boolean mFindIsUp; 2557 2558 private int mFindHeight; 2559 // Keep track of the last string sent, so we can search again after an 2560 // orientation change or the dismissal of the soft keyboard. 2561 private String mLastFind; 2562 2563 /** 2564 * Return the first substring consisting of the address of a physical 2565 * location. Currently, only addresses in the United States are detected, 2566 * and consist of: 2567 * - a house number 2568 * - a street name 2569 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2570 * - a city name 2571 * - a state or territory, either spelled out or two-letter abbr. 2572 * - an optional 5 digit or 9 digit zip code. 2573 * 2574 * All names must be correctly capitalized, and the zip code, if present, 2575 * must be valid for the state. The street type must be a standard USPS 2576 * spelling or abbreviation. The state or territory must also be spelled 2577 * or abbreviated using USPS standards. The house number may not exceed 2578 * five digits. 2579 * @param addr The string to search for addresses. 2580 * 2581 * @return the address, or if no address is found, return null. 2582 */ 2583 public static String findAddress(String addr) { 2584 return findAddress(addr, false); 2585 } 2586 2587 /** 2588 * @hide 2589 * Return the first substring consisting of the address of a physical 2590 * location. Currently, only addresses in the United States are detected, 2591 * and consist of: 2592 * - a house number 2593 * - a street name 2594 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2595 * - a city name 2596 * - a state or territory, either spelled out or two-letter abbr. 2597 * - an optional 5 digit or 9 digit zip code. 2598 * 2599 * Names are optionally capitalized, and the zip code, if present, 2600 * must be valid for the state. The street type must be a standard USPS 2601 * spelling or abbreviation. The state or territory must also be spelled 2602 * or abbreviated using USPS standards. The house number may not exceed 2603 * five digits. 2604 * @param addr The string to search for addresses. 2605 * @param caseInsensitive addr Set to true to make search ignore case. 2606 * 2607 * @return the address, or if no address is found, return null. 2608 */ 2609 public static String findAddress(String addr, boolean caseInsensitive) { 2610 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2611 } 2612 2613 /* 2614 * Clear the highlighting surrounding text matches created by findAll. 2615 */ 2616 public void clearMatches() { 2617 mLastFind = ""; 2618 if (mNativeClass == 0) 2619 return; 2620 nativeSetFindIsEmpty(); 2621 invalidate(); 2622 } 2623 2624 /** 2625 * @hide 2626 */ 2627 public void notifyFindDialogDismissed() { 2628 clearMatches(); 2629 setFindIsUp(false); 2630 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2631 false); 2632 // Now that the dialog has been removed, ensure that we scroll to a 2633 // location that is not beyond the end of the page. 2634 pinScrollTo(mScrollX, mScrollY, false, 0); 2635 invalidate(); 2636 } 2637 2638 /** 2639 * @hide 2640 */ 2641 public void setFindDialogHeight(int height) { 2642 if (DebugFlags.WEB_VIEW) { 2643 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2644 } 2645 mFindHeight = height; 2646 } 2647 2648 /** 2649 * Query the document to see if it contains any image references. The 2650 * message object will be dispatched with arg1 being set to 1 if images 2651 * were found and 0 if the document does not reference any images. 2652 * @param response The message that will be dispatched with the result. 2653 */ 2654 public void documentHasImages(Message response) { 2655 if (response == null) { 2656 return; 2657 } 2658 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2659 } 2660 2661 @Override 2662 public void computeScroll() { 2663 if (mScroller.computeScrollOffset()) { 2664 int oldX = mScrollX; 2665 int oldY = mScrollY; 2666 int x = mScroller.getCurrX(); 2667 int y = mScroller.getCurrY(); 2668 postInvalidate(); // So we draw again 2669 if (oldX != x || oldY != y) { 2670 overscrollBy(x - oldX, y - oldY, oldX, oldY, 2671 computeMaxScrollX(), computeMaxScrollY(), 2672 getViewWidth() / 3, getViewHeight() / 3); 2673 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2674 } 2675 } else { 2676 super.computeScroll(); 2677 } 2678 } 2679 2680 private static int computeDuration(int dx, int dy) { 2681 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2682 int duration = distance * 1000 / STD_SPEED; 2683 return Math.min(duration, MAX_DURATION); 2684 } 2685 2686 // helper to pin the scrollBy parameters (already in view coordinates) 2687 // returns true if the scroll was changed 2688 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2689 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2690 } 2691 // helper to pin the scrollTo parameters (already in view coordinates) 2692 // returns true if the scroll was changed 2693 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2694 x = pinLocX(x); 2695 y = pinLocY(y); 2696 int dx = x - mScrollX; 2697 int dy = y - mScrollY; 2698 2699 if ((dx | dy) == 0) { 2700 return false; 2701 } 2702 if (animate) { 2703 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2704 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2705 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2706 awakenScrollBars(mScroller.getDuration()); 2707 invalidate(); 2708 } else { 2709 abortAnimation(); // just in case 2710 scrollTo(x, y); 2711 } 2712 return true; 2713 } 2714 2715 // Scale from content to view coordinates, and pin. 2716 // Also called by jni webview.cpp 2717 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2718 if (mDrawHistory) { 2719 // disallow WebView to change the scroll position as History Picture 2720 // is used in the view system. 2721 // TODO: as we switchOutDrawHistory when trackball or navigation 2722 // keys are hit, this should be safe. Right? 2723 return false; 2724 } 2725 cx = contentToViewDimension(cx); 2726 cy = contentToViewDimension(cy); 2727 if (mHeightCanMeasure) { 2728 // move our visible rect according to scroll request 2729 if (cy != 0) { 2730 Rect tempRect = new Rect(); 2731 calcOurVisibleRect(tempRect); 2732 tempRect.offset(cx, cy); 2733 requestRectangleOnScreen(tempRect); 2734 } 2735 // FIXME: We scroll horizontally no matter what because currently 2736 // ScrollView and ListView will not scroll horizontally. 2737 // FIXME: Why do we only scroll horizontally if there is no 2738 // vertical scroll? 2739// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2740 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2741 } else { 2742 return pinScrollBy(cx, cy, animate, 0); 2743 } 2744 } 2745 2746 /** 2747 * Called by CallbackProxy when the page finishes loading. 2748 * @param url The URL of the page which has finished loading. 2749 */ 2750 /* package */ void onPageFinished(String url) { 2751 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 2752 // If the user is now on a different page, or has scrolled the page 2753 // past the point where the title bar is offscreen, ignore the 2754 // scroll request. 2755 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 2756 && mScrollX == 0 && mScrollY == 0) { 2757 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 2758 SLIDE_TITLE_DURATION); 2759 } 2760 mPageThatNeedsToSlideTitleBarOffScreen = null; 2761 } 2762 } 2763 2764 /** 2765 * The URL of a page that sent a message to scroll the title bar off screen. 2766 * 2767 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 2768 * title bar off the screen. Sometimes, the scroll position is set before 2769 * the page finishes loading. Rather than scrolling while the page is still 2770 * loading, keep track of the URL and new scroll position so we can perform 2771 * the scroll once the page finishes loading. 2772 */ 2773 private String mPageThatNeedsToSlideTitleBarOffScreen; 2774 2775 /** 2776 * The destination Y scroll position to be used when the page finishes 2777 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 2778 */ 2779 private int mYDistanceToSlideTitleOffScreen; 2780 2781 // scale from content to view coordinates, and pin 2782 // return true if pin caused the final x/y different than the request cx/cy, 2783 // and a future scroll may reach the request cx/cy after our size has 2784 // changed 2785 // return false if the view scroll to the exact position as it is requested, 2786 // where negative numbers are taken to mean 0 2787 private boolean setContentScrollTo(int cx, int cy) { 2788 if (mDrawHistory) { 2789 // disallow WebView to change the scroll position as History Picture 2790 // is used in the view system. 2791 // One known case where this is called is that WebCore tries to 2792 // restore the scroll position. As history Picture already uses the 2793 // saved scroll position, it is ok to skip this. 2794 return false; 2795 } 2796 int vx; 2797 int vy; 2798 if ((cx | cy) == 0) { 2799 // If the page is being scrolled to (0,0), do not add in the title 2800 // bar's height, and simply scroll to (0,0). (The only other work 2801 // in contentToView_ is to multiply, so this would not change 0.) 2802 vx = 0; 2803 vy = 0; 2804 } else { 2805 vx = contentToViewX(cx); 2806 vy = contentToViewY(cy); 2807 } 2808// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2809// vx + " " + vy + "]"); 2810 // Some mobile sites attempt to scroll the title bar off the page by 2811 // scrolling to (0,1). If we are at the top left corner of the 2812 // page, assume this is an attempt to scroll off the title bar, and 2813 // animate the title bar off screen slowly enough that the user can see 2814 // it. 2815 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 2816 && mTitleBar != null) { 2817 // FIXME: 100 should be defined somewhere as our max progress. 2818 if (getProgress() < 100) { 2819 // Wait to scroll the title bar off screen until the page has 2820 // finished loading. Keep track of the URL and the destination 2821 // Y position 2822 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 2823 mYDistanceToSlideTitleOffScreen = vy; 2824 } else { 2825 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2826 } 2827 // Since we are animating, we have not yet reached the desired 2828 // scroll position. Do not return true to request another attempt 2829 return false; 2830 } 2831 pinScrollTo(vx, vy, false, 0); 2832 // If the request was to scroll to a negative coordinate, treat it as if 2833 // it was a request to scroll to 0 2834 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2835 return true; 2836 } else { 2837 return false; 2838 } 2839 } 2840 2841 // scale from content to view coordinates, and pin 2842 private void spawnContentScrollTo(int cx, int cy) { 2843 if (mDrawHistory) { 2844 // disallow WebView to change the scroll position as History Picture 2845 // is used in the view system. 2846 return; 2847 } 2848 int vx = contentToViewX(cx); 2849 int vy = contentToViewY(cy); 2850 pinScrollTo(vx, vy, true, 0); 2851 } 2852 2853 /** 2854 * These are from webkit, and are in content coordinate system (unzoomed) 2855 */ 2856 private void contentSizeChanged(boolean updateLayout) { 2857 // suppress 0,0 since we usually see real dimensions soon after 2858 // this avoids drawing the prev content in a funny place. If we find a 2859 // way to consolidate these notifications, this check may become 2860 // obsolete 2861 if ((mContentWidth | mContentHeight) == 0) { 2862 return; 2863 } 2864 2865 if (mHeightCanMeasure) { 2866 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2867 || updateLayout) { 2868 requestLayout(); 2869 } 2870 } else if (mWidthCanMeasure) { 2871 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2872 || updateLayout) { 2873 requestLayout(); 2874 } 2875 } else { 2876 // If we don't request a layout, try to send our view size to the 2877 // native side to ensure that WebCore has the correct dimensions. 2878 sendViewSizeZoom(); 2879 } 2880 } 2881 2882 /** 2883 * Set the WebViewClient that will receive various notifications and 2884 * requests. This will replace the current handler. 2885 * @param client An implementation of WebViewClient. 2886 */ 2887 public void setWebViewClient(WebViewClient client) { 2888 mCallbackProxy.setWebViewClient(client); 2889 } 2890 2891 /** 2892 * Gets the WebViewClient 2893 * @return the current WebViewClient instance. 2894 * 2895 *@hide pending API council approval. 2896 */ 2897 public WebViewClient getWebViewClient() { 2898 return mCallbackProxy.getWebViewClient(); 2899 } 2900 2901 /** 2902 * Register the interface to be used when content can not be handled by 2903 * the rendering engine, and should be downloaded instead. This will replace 2904 * the current handler. 2905 * @param listener An implementation of DownloadListener. 2906 */ 2907 public void setDownloadListener(DownloadListener listener) { 2908 mCallbackProxy.setDownloadListener(listener); 2909 } 2910 2911 /** 2912 * Set the chrome handler. This is an implementation of WebChromeClient for 2913 * use in handling Javascript dialogs, favicons, titles, and the progress. 2914 * This will replace the current handler. 2915 * @param client An implementation of WebChromeClient. 2916 */ 2917 public void setWebChromeClient(WebChromeClient client) { 2918 mCallbackProxy.setWebChromeClient(client); 2919 } 2920 2921 /** 2922 * Gets the chrome handler. 2923 * @return the current WebChromeClient instance. 2924 * 2925 * @hide API council approval. 2926 */ 2927 public WebChromeClient getWebChromeClient() { 2928 return mCallbackProxy.getWebChromeClient(); 2929 } 2930 2931 /** 2932 * Set the back/forward list client. This is an implementation of 2933 * WebBackForwardListClient for handling new items and changes in the 2934 * history index. 2935 * @param client An implementation of WebBackForwardListClient. 2936 * {@hide} 2937 */ 2938 public void setWebBackForwardListClient(WebBackForwardListClient client) { 2939 mCallbackProxy.setWebBackForwardListClient(client); 2940 } 2941 2942 /** 2943 * Gets the WebBackForwardListClient. 2944 * {@hide} 2945 */ 2946 public WebBackForwardListClient getWebBackForwardListClient() { 2947 return mCallbackProxy.getWebBackForwardListClient(); 2948 } 2949 2950 /** 2951 * Set the Picture listener. This is an interface used to receive 2952 * notifications of a new Picture. 2953 * @param listener An implementation of WebView.PictureListener. 2954 */ 2955 public void setPictureListener(PictureListener listener) { 2956 mPictureListener = listener; 2957 } 2958 2959 /** 2960 * {@hide} 2961 */ 2962 /* FIXME: Debug only! Remove for SDK! */ 2963 public void externalRepresentation(Message callback) { 2964 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2965 } 2966 2967 /** 2968 * {@hide} 2969 */ 2970 /* FIXME: Debug only! Remove for SDK! */ 2971 public void documentAsText(Message callback) { 2972 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2973 } 2974 2975 /** 2976 * Use this function to bind an object to Javascript so that the 2977 * methods can be accessed from Javascript. 2978 * <p><strong>IMPORTANT:</strong> 2979 * <ul> 2980 * <li> Using addJavascriptInterface() allows JavaScript to control your 2981 * application. This can be a very useful feature or a dangerous security 2982 * issue. When the HTML in the WebView is untrustworthy (for example, part 2983 * or all of the HTML is provided by some person or process), then an 2984 * attacker could inject HTML that will execute your code and possibly any 2985 * code of the attacker's choosing.<br> 2986 * Do not use addJavascriptInterface() unless all of the HTML in this 2987 * WebView was written by you.</li> 2988 * <li> The Java object that is bound runs in another thread and not in 2989 * the thread that it was constructed in.</li> 2990 * </ul></p> 2991 * @param obj The class instance to bind to Javascript 2992 * @param interfaceName The name to used to expose the class in Javascript 2993 */ 2994 public void addJavascriptInterface(Object obj, String interfaceName) { 2995 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2996 arg.mObject = obj; 2997 arg.mInterfaceName = interfaceName; 2998 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2999 } 3000 3001 /** 3002 * Return the WebSettings object used to control the settings for this 3003 * WebView. 3004 * @return A WebSettings object that can be used to control this WebView's 3005 * settings. 3006 */ 3007 public WebSettings getSettings() { 3008 return mWebViewCore.getSettings(); 3009 } 3010 3011 /** 3012 * Use this method to inform the webview about packages that are installed 3013 * in the system. This information will be used by the 3014 * navigator.isApplicationInstalled() API. 3015 * @param packageNames is a set of package names that are known to be 3016 * installed in the system. 3017 * 3018 * @hide not a public API 3019 */ 3020 public void addPackageNames(Set<String> packageNames) { 3021 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, packageNames); 3022 } 3023 3024 /** 3025 * Use this method to inform the webview about single packages that are 3026 * installed in the system. This information will be used by the 3027 * navigator.isApplicationInstalled() API. 3028 * @param packageName is the name of a package that is known to be 3029 * installed in the system. 3030 * 3031 * @hide not a public API 3032 */ 3033 public void addPackageName(String packageName) { 3034 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 3035 } 3036 3037 /** 3038 * Use this method to inform the webview about packages that are uninstalled 3039 * in the system. This information will be used by the 3040 * navigator.isApplicationInstalled() API. 3041 * @param packageName is the name of a package that has been uninstalled in 3042 * the system. 3043 * 3044 * @hide not a public API 3045 */ 3046 public void removePackageName(String packageName) { 3047 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 3048 } 3049 3050 /** 3051 * Return the list of currently loaded plugins. 3052 * @return The list of currently loaded plugins. 3053 * 3054 * @deprecated This was used for Gears, which has been deprecated. 3055 */ 3056 @Deprecated 3057 public static synchronized PluginList getPluginList() { 3058 return new PluginList(); 3059 } 3060 3061 /** 3062 * @deprecated This was used for Gears, which has been deprecated. 3063 */ 3064 @Deprecated 3065 public void refreshPlugins(boolean reloadOpenPages) { } 3066 3067 //------------------------------------------------------------------------- 3068 // Override View methods 3069 //------------------------------------------------------------------------- 3070 3071 @Override 3072 protected void finalize() throws Throwable { 3073 try { 3074 destroy(); 3075 } finally { 3076 super.finalize(); 3077 } 3078 } 3079 3080 @Override 3081 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3082 if (child == mTitleBar) { 3083 // When drawing the title bar, move it horizontally to always show 3084 // at the top of the WebView. While overscroll, stick the title bar 3085 // on the top otherwise we may have two during loading, one is drawn 3086 // here, another is drawn by the Browser. 3087 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3088 if (mScrollY <= 0) { 3089 mTitleBar.offsetTopAndBottom(mScrollY - mTitleBar.getTop()); 3090 } 3091 } 3092 return super.drawChild(canvas, child, drawingTime); 3093 } 3094 3095 private void drawContent(Canvas canvas) { 3096 // Update the buttons in the picture, so when we draw the picture 3097 // to the screen, they are in the correct state. 3098 // Tell the native side if user is a) touching the screen, 3099 // b) pressing the trackball down, or c) pressing the enter key 3100 // If the cursor is on a button, we need to draw it in the pressed 3101 // state. 3102 // If mNativeClass is 0, we should not reach here, so we do not 3103 // need to check it again. 3104 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3105 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3106 || mTrackballDown || mGotCenterDown, false); 3107 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3108 } 3109 3110 @Override 3111 protected void onDraw(Canvas canvas) { 3112 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3113 if (mNativeClass == 0) { 3114 return; 3115 } 3116 3117 int saveCount = canvas.save(); 3118 if (mInOverScrollMode 3119 && getSettings().getUseSystemOverscrollBackground()) { 3120 if (mOverScrollBackground == null) { 3121 mOverScrollBackground = new Paint(); 3122 Bitmap bm = BitmapFactory.decodeResource( 3123 mContext.getResources(), 3124 com.android.internal.R.drawable.pattern_underwear); 3125 mOverScrollBackground.setShader(new BitmapShader(bm, 3126 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3127 } 3128 int top = getTitleHeight(); 3129 // first draw the background and anchor to the top of the view 3130 canvas.save(); 3131 canvas.translate(mScrollX, mScrollY); 3132 canvas.clipRect(-mScrollX, top - mScrollY, 3133 computeHorizontalScrollRange() - mScrollX, top 3134 + computeVerticalScrollRange() - mScrollY, 3135 Region.Op.DIFFERENCE); 3136 canvas.drawPaint(mOverScrollBackground); 3137 canvas.restore(); 3138 // next clip the region for the content 3139 canvas.clipRect(0, top, computeHorizontalScrollRange(), top 3140 + computeVerticalScrollRange()); 3141 } 3142 if (mTitleBar != null) { 3143 canvas.translate(0, (int) mTitleBar.getHeight()); 3144 } 3145 if (mDragTrackerHandler == null) { 3146 drawContent(canvas); 3147 } else { 3148 if (!mDragTrackerHandler.draw(canvas)) { 3149 // sometimes the tracker doesn't draw, even though its active 3150 drawContent(canvas); 3151 } 3152 if (mDragTrackerHandler.isFinished()) { 3153 mDragTrackerHandler = null; 3154 } 3155 } 3156 canvas.restoreToCount(saveCount); 3157 3158 // Now draw the shadow. 3159 int titleH = getVisibleTitleHeight(); 3160 if (mTitleBar != null && titleH == 0) { 3161 int height = (int) (5f * getContext().getResources() 3162 .getDisplayMetrics().density); 3163 mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(), 3164 mScrollY + height); 3165 mTitleShadow.draw(canvas); 3166 } 3167 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3168 invalidate(); 3169 } 3170 mWebViewCore.signalRepaintDone(); 3171 } 3172 3173 @Override 3174 public void setLayoutParams(ViewGroup.LayoutParams params) { 3175 if (params.height == LayoutParams.WRAP_CONTENT) { 3176 mWrapContent = true; 3177 } 3178 super.setLayoutParams(params); 3179 } 3180 3181 @Override 3182 public boolean performLongClick() { 3183 // performLongClick() is the result of a delayed message. If we switch 3184 // to windows overview, the WebView will be temporarily removed from the 3185 // view system. In that case, do nothing. 3186 if (getParent() == null) return false; 3187 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3188 // Send the click so that the textfield is in focus 3189 centerKeyPressOnTextField(); 3190 rebuildWebTextView(); 3191 } 3192 if (inEditingMode()) { 3193 return mWebTextView.performLongClick(); 3194 } else { 3195 return super.performLongClick(); 3196 } 3197 } 3198 3199 boolean inAnimateZoom() { 3200 return mZoomScale != 0; 3201 } 3202 3203 /** 3204 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3205 * has changed. This is especially important for password fields, which are 3206 * drawn by the WebTextView, since it conveys more information than what 3207 * webkit draws. Thus we need to reposition it to show in the correct 3208 * place. 3209 */ 3210 private boolean mNeedToAdjustWebTextView; 3211 3212 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3213 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3214 Rect vBox = contentToViewRect(contentBounds); 3215 Rect visibleRect = new Rect(); 3216 calcOurVisibleRect(visibleRect); 3217 // If the textfield is on screen, place the WebTextView in 3218 // its new place, accounting for our new scroll/zoom values, 3219 // and adjust its textsize. 3220 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3221 : visibleRect.contains(vBox)) { 3222 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3223 vBox.height()); 3224 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3225 contentToViewDimension( 3226 nativeFocusCandidateTextSize())); 3227 return true; 3228 } else { 3229 // The textfield is now off screen. The user probably 3230 // was not zooming to see the textfield better. Remove 3231 // the WebTextView. If the user types a key, and the 3232 // textfield is still in focus, we will reconstruct 3233 // the WebTextView and scroll it back on screen. 3234 mWebTextView.remove(); 3235 return false; 3236 } 3237 } 3238 3239 private void drawExtras(Canvas canvas, int extras) { 3240 // If mNativeClass is 0, we should not reach here, so we do not 3241 // need to check it again. 3242 // Currently for each draw we compute the animation values; 3243 // We may in the future decide to do that independently. 3244 if (nativeEvaluateLayersAnimations()) { 3245 // If we have unfinished (or unstarted) animations, 3246 // we ask for a repaint. 3247 invalidate(); 3248 } 3249 3250 nativeDrawExtras(canvas, extras); 3251 } 3252 3253 private void drawCoreAndCursorRing(Canvas canvas, int color, 3254 boolean drawCursorRing) { 3255 if (mDrawHistory) { 3256 canvas.scale(mActualScale, mActualScale); 3257 canvas.drawPicture(mHistoryPicture); 3258 return; 3259 } 3260 3261 boolean animateZoom = mZoomScale != 0; 3262 boolean animateScroll = ((!mScroller.isFinished() 3263 || mVelocityTracker != null) 3264 && (mTouchMode != TOUCH_DRAG_MODE || 3265 mHeldMotionless != MOTIONLESS_TRUE)) 3266 || mDeferTouchMode == TOUCH_DRAG_MODE; 3267 if (mTouchMode == TOUCH_DRAG_MODE) { 3268 if (mHeldMotionless == MOTIONLESS_PENDING) { 3269 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3270 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3271 mHeldMotionless = MOTIONLESS_FALSE; 3272 } 3273 if (mHeldMotionless == MOTIONLESS_FALSE) { 3274 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3275 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3276 mHeldMotionless = MOTIONLESS_PENDING; 3277 } 3278 } 3279 if (animateZoom) { 3280 float zoomScale; 3281 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 3282 if (interval < ZOOM_ANIMATION_LENGTH) { 3283 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 3284 zoomScale = 1.0f / (mInvInitialZoomScale 3285 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 3286 invalidate(); 3287 } else { 3288 zoomScale = mZoomScale; 3289 // set mZoomScale to be 0 as we have done animation 3290 mZoomScale = 0; 3291 WebViewCore.resumeUpdatePicture(mWebViewCore); 3292 // call invalidate() again to draw with the final filters 3293 invalidate(); 3294 if (mNeedToAdjustWebTextView) { 3295 mNeedToAdjustWebTextView = false; 3296 if (didUpdateTextViewBounds(false) 3297 && nativeFocusCandidateIsPassword()) { 3298 // If it is a password field, start drawing the 3299 // WebTextView once again. 3300 mWebTextView.setInPassword(true); 3301 } 3302 } 3303 } 3304 // calculate the intermediate scroll position. As we need to use 3305 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 3306 float scale = zoomScale * mInvInitialZoomScale; 3307 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 3308 - mZoomCenterX); 3309 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 3310 * zoomScale)) + mScrollX; 3311 int titleHeight = getTitleHeight(); 3312 int ty = Math.round(scale 3313 * (mInitialScrollY + mZoomCenterY - titleHeight) 3314 - (mZoomCenterY - titleHeight)); 3315 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 3316 - titleHeight, getViewHeight(), Math.round(mContentHeight 3317 * zoomScale)) + titleHeight) + mScrollY; 3318 canvas.translate(tx, ty); 3319 canvas.scale(zoomScale, zoomScale); 3320 if (inEditingMode() && !mNeedToAdjustWebTextView 3321 && mZoomScale != 0) { 3322 // The WebTextView is up. Keep track of this so we can adjust 3323 // its size and placement when we finish zooming 3324 mNeedToAdjustWebTextView = true; 3325 // If it is in password mode, turn it off so it does not draw 3326 // misplaced. 3327 if (nativeFocusCandidateIsPassword()) { 3328 mWebTextView.setInPassword(false); 3329 } 3330 } 3331 } else { 3332 canvas.scale(mActualScale, mActualScale); 3333 } 3334 3335 mWebViewCore.drawContentPicture(canvas, color, 3336 (animateZoom || mPreviewZoomOnly), animateScroll); 3337 if (mNativeClass == 0) return; 3338 // decide which adornments to draw 3339 int extras = DRAW_EXTRAS_NONE; 3340 if (mFindIsUp) { 3341 // When the FindDialog is up, only draw the matches if we are not in 3342 // the process of scrolling them into view. 3343 if (!animateScroll) { 3344 extras = DRAW_EXTRAS_FIND; 3345 } 3346 } else if (mShiftIsPressed && !nativeFocusIsPlugin()) { 3347 if (!animateZoom && !mPreviewZoomOnly) { 3348 extras = DRAW_EXTRAS_SELECTION; 3349 nativeSetSelectionRegion(mTouchSelection || mExtendSelection); 3350 nativeSetSelectionPointer(!mTouchSelection, mInvActualScale, 3351 mSelectX, mSelectY - getTitleHeight(), 3352 mExtendSelection); 3353 } 3354 } else if (drawCursorRing) { 3355 extras = DRAW_EXTRAS_CURSOR_RING; 3356 } 3357 drawExtras(canvas, extras); 3358 3359 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3360 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3361 mTouchMode = TOUCH_SHORTPRESS_MODE; 3362 HitTestResult hitTest = getHitTestResult(); 3363 if (hitTest == null 3364 || hitTest.mType == HitTestResult.UNKNOWN_TYPE) { 3365 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3366 } 3367 } 3368 } 3369 if (mFocusSizeChanged) { 3370 mFocusSizeChanged = false; 3371 // If we are zooming, this will get handled above, when the zoom 3372 // finishes. We also do not need to do this unless the WebTextView 3373 // is showing. 3374 if (!animateZoom && inEditingMode()) { 3375 didUpdateTextViewBounds(true); 3376 } 3377 } 3378 } 3379 3380 // draw history 3381 private boolean mDrawHistory = false; 3382 private Picture mHistoryPicture = null; 3383 private int mHistoryWidth = 0; 3384 private int mHistoryHeight = 0; 3385 3386 // Only check the flag, can be called from WebCore thread 3387 boolean drawHistory() { 3388 return mDrawHistory; 3389 } 3390 3391 // Should only be called in UI thread 3392 void switchOutDrawHistory() { 3393 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3394 if (mDrawHistory && mWebViewCore.pictureReady()) { 3395 mDrawHistory = false; 3396 invalidate(); 3397 int oldScrollX = mScrollX; 3398 int oldScrollY = mScrollY; 3399 mScrollX = pinLocX(mScrollX); 3400 mScrollY = pinLocY(mScrollY); 3401 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3402 mUserScroll = false; 3403 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3404 oldScrollY); 3405 } 3406 sendOurVisibleRect(); 3407 } 3408 } 3409 3410 WebViewCore.CursorData cursorData() { 3411 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3412 result.mMoveGeneration = nativeMoveGeneration(); 3413 result.mFrame = nativeCursorFramePointer(); 3414 Point position = nativeCursorPosition(); 3415 result.mX = position.x; 3416 result.mY = position.y; 3417 return result; 3418 } 3419 3420 /** 3421 * Delete text from start to end in the focused textfield. If there is no 3422 * focus, or if start == end, silently fail. If start and end are out of 3423 * order, swap them. 3424 * @param start Beginning of selection to delete. 3425 * @param end End of selection to delete. 3426 */ 3427 /* package */ void deleteSelection(int start, int end) { 3428 mTextGeneration++; 3429 WebViewCore.TextSelectionData data 3430 = new WebViewCore.TextSelectionData(start, end); 3431 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3432 data); 3433 } 3434 3435 /** 3436 * Set the selection to (start, end) in the focused textfield. If start and 3437 * end are out of order, swap them. 3438 * @param start Beginning of selection. 3439 * @param end End of selection. 3440 */ 3441 /* package */ void setSelection(int start, int end) { 3442 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3443 } 3444 3445 @Override 3446 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3447 InputConnection connection = super.onCreateInputConnection(outAttrs); 3448 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3449 return connection; 3450 } 3451 3452 /** 3453 * Called in response to a message from webkit telling us that the soft 3454 * keyboard should be launched. 3455 */ 3456 private void displaySoftKeyboard(boolean isTextView) { 3457 InputMethodManager imm = (InputMethodManager) 3458 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3459 3460 // bring it back to the default scale so that user can enter text 3461 boolean zoom = mActualScale < mDefaultScale; 3462 if (zoom) { 3463 mInZoomOverview = false; 3464 mZoomCenterX = mLastTouchX; 3465 mZoomCenterY = mLastTouchY; 3466 // do not change text wrap scale so that there is no reflow 3467 setNewZoomScale(mDefaultScale, false, false); 3468 } 3469 if (isTextView) { 3470 rebuildWebTextView(); 3471 if (inEditingMode()) { 3472 imm.showSoftInput(mWebTextView, 0); 3473 if (zoom) { 3474 didUpdateTextViewBounds(true); 3475 } 3476 return; 3477 } 3478 } 3479 // Used by plugins. 3480 // Also used if the navigation cache is out of date, and 3481 // does not recognize that a textfield is in focus. In that 3482 // case, use WebView as the targeted view. 3483 // see http://b/issue?id=2457459 3484 imm.showSoftInput(this, 0); 3485 } 3486 3487 // Called by WebKit to instruct the UI to hide the keyboard 3488 private void hideSoftKeyboard() { 3489 InputMethodManager imm = (InputMethodManager) 3490 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3491 3492 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3493 } 3494 3495 /* 3496 * This method checks the current focus and cursor and potentially rebuilds 3497 * mWebTextView to have the appropriate properties, such as password, 3498 * multiline, and what text it contains. It also removes it if necessary. 3499 */ 3500 /* package */ void rebuildWebTextView() { 3501 // If the WebView does not have focus, do nothing until it gains focus. 3502 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3503 return; 3504 } 3505 boolean alreadyThere = inEditingMode(); 3506 // inEditingMode can only return true if mWebTextView is non-null, 3507 // so we can safely call remove() if (alreadyThere) 3508 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3509 if (alreadyThere) { 3510 mWebTextView.remove(); 3511 } 3512 return; 3513 } 3514 // At this point, we know we have found an input field, so go ahead 3515 // and create the WebTextView if necessary. 3516 if (mWebTextView == null) { 3517 mWebTextView = new WebTextView(mContext, WebView.this); 3518 // Initialize our generation number. 3519 mTextGeneration = 0; 3520 } 3521 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3522 contentToViewDimension(nativeFocusCandidateTextSize())); 3523 Rect visibleRect = new Rect(); 3524 calcOurContentVisibleRect(visibleRect); 3525 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3526 // should be in content coordinates. 3527 Rect bounds = nativeFocusCandidateNodeBounds(); 3528 Rect vBox = contentToViewRect(bounds); 3529 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3530 if (!Rect.intersects(bounds, visibleRect)) { 3531 mWebTextView.bringIntoView(); 3532 } 3533 String text = nativeFocusCandidateText(); 3534 int nodePointer = nativeFocusCandidatePointer(); 3535 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3536 // It is possible that we have the same textfield, but it has moved, 3537 // i.e. In the case of opening/closing the screen. 3538 // In that case, we need to set the dimensions, but not the other 3539 // aspects. 3540 // If the text has been changed by webkit, update it. However, if 3541 // there has been more UI text input, ignore it. We will receive 3542 // another update when that text is recognized. 3543 if (text != null && !text.equals(mWebTextView.getText().toString()) 3544 && nativeTextGeneration() == mTextGeneration) { 3545 mWebTextView.setTextAndKeepSelection(text); 3546 } 3547 } else { 3548 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3549 Gravity.RIGHT : Gravity.NO_GRAVITY); 3550 // This needs to be called before setType, which may call 3551 // requestFormData, and it needs to have the correct nodePointer. 3552 mWebTextView.setNodePointer(nodePointer); 3553 mWebTextView.setType(nativeFocusCandidateType()); 3554 if (null == text) { 3555 if (DebugFlags.WEB_VIEW) { 3556 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3557 } 3558 text = ""; 3559 } 3560 mWebTextView.setTextAndKeepSelection(text); 3561 InputMethodManager imm = InputMethodManager.peekInstance(); 3562 if (imm != null && imm.isActive(mWebTextView)) { 3563 imm.restartInput(mWebTextView); 3564 } 3565 } 3566 mWebTextView.requestFocus(); 3567 } 3568 3569 /** 3570 * Called by WebTextView to find saved form data associated with the 3571 * textfield 3572 * @param name Name of the textfield. 3573 * @param nodePointer Pointer to the node of the textfield, so it can be 3574 * compared to the currently focused textfield when the data is 3575 * retrieved. 3576 */ 3577 /* package */ void requestFormData(String name, int nodePointer) { 3578 if (mWebViewCore.getSettings().getSaveFormData()) { 3579 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3580 update.arg1 = nodePointer; 3581 RequestFormData updater = new RequestFormData(name, getUrl(), 3582 update); 3583 Thread t = new Thread(updater); 3584 t.start(); 3585 } 3586 } 3587 3588 /** 3589 * Pass a message to find out the <label> associated with the <input> 3590 * identified by nodePointer 3591 * @param framePointer Pointer to the frame containing the <input> node 3592 * @param nodePointer Pointer to the node for which a <label> is desired. 3593 */ 3594 /* package */ void requestLabel(int framePointer, int nodePointer) { 3595 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3596 nodePointer); 3597 } 3598 3599 /* 3600 * This class requests an Adapter for the WebTextView which shows past 3601 * entries stored in the database. It is a Runnable so that it can be done 3602 * in its own thread, without slowing down the UI. 3603 */ 3604 private class RequestFormData implements Runnable { 3605 private String mName; 3606 private String mUrl; 3607 private Message mUpdateMessage; 3608 3609 public RequestFormData(String name, String url, Message msg) { 3610 mName = name; 3611 mUrl = url; 3612 mUpdateMessage = msg; 3613 } 3614 3615 public void run() { 3616 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3617 if (pastEntries.size() > 0) { 3618 AutoCompleteAdapter adapter = new 3619 AutoCompleteAdapter(mContext, pastEntries); 3620 mUpdateMessage.obj = adapter; 3621 mUpdateMessage.sendToTarget(); 3622 } 3623 } 3624 } 3625 3626 /** 3627 * Dump the display tree to "/sdcard/displayTree.txt" 3628 * 3629 * @hide debug only 3630 */ 3631 public void dumpDisplayTree() { 3632 nativeDumpDisplayTree(getUrl()); 3633 } 3634 3635 /** 3636 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 3637 * "/sdcard/domTree.txt" 3638 * 3639 * @hide debug only 3640 */ 3641 public void dumpDomTree(boolean toFile) { 3642 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 3643 } 3644 3645 /** 3646 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 3647 * to "/sdcard/renderTree.txt" 3648 * 3649 * @hide debug only 3650 */ 3651 public void dumpRenderTree(boolean toFile) { 3652 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 3653 } 3654 3655 /** 3656 * Dump the V8 counters to standard output. 3657 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 3658 * true. Otherwise, this will do nothing. 3659 * 3660 * @hide debug only 3661 */ 3662 public void dumpV8Counters() { 3663 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 3664 } 3665 3666 // This is used to determine long press with the center key. Does not 3667 // affect long press with the trackball/touch. 3668 private boolean mGotCenterDown = false; 3669 3670 @Override 3671 public boolean onKeyDown(int keyCode, KeyEvent event) { 3672 if (DebugFlags.WEB_VIEW) { 3673 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3674 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3675 } 3676 3677 if (mNativeClass == 0) { 3678 return false; 3679 } 3680 3681 // do this hack up front, so it always works, regardless of touch-mode 3682 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3683 mAutoRedraw = !mAutoRedraw; 3684 if (mAutoRedraw) { 3685 invalidate(); 3686 } 3687 return true; 3688 } 3689 3690 // Bubble up the key event if 3691 // 1. it is a system key; or 3692 // 2. the host application wants to handle it; 3693 if (event.isSystem() 3694 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3695 return false; 3696 } 3697 3698 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3699 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3700 if (nativeFocusIsPlugin()) { 3701 mShiftIsPressed = true; 3702 } else if (!nativeCursorWantsKeyEvents() && !mShiftIsPressed) { 3703 setUpSelectXY(); 3704 } 3705 } 3706 3707 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3708 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3709 switchOutDrawHistory(); 3710 if (nativeFocusIsPlugin()) { 3711 letPluginHandleNavKey(keyCode, event.getEventTime(), true); 3712 return true; 3713 } 3714 if (mShiftIsPressed) { 3715 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 3716 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 3717 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 3718 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 3719 int multiplier = event.getRepeatCount() + 1; 3720 moveSelection(xRate * multiplier, yRate * multiplier); 3721 return true; 3722 } 3723 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 3724 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3725 return true; 3726 } 3727 // Bubble up the key event as WebView doesn't handle it 3728 return false; 3729 } 3730 3731 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3732 switchOutDrawHistory(); 3733 if (event.getRepeatCount() == 0) { 3734 if (mShiftIsPressed && !nativeFocusIsPlugin()) { 3735 return true; // discard press if copy in progress 3736 } 3737 mGotCenterDown = true; 3738 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3739 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3740 // Already checked mNativeClass, so we do not need to check it 3741 // again. 3742 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3743 return true; 3744 } 3745 // Bubble up the key event as WebView doesn't handle it 3746 return false; 3747 } 3748 3749 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3750 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3751 // turn off copy select if a shift-key combo is pressed 3752 mExtendSelection = mShiftIsPressed = false; 3753 if (mTouchMode == TOUCH_SELECT_MODE) { 3754 mTouchMode = TOUCH_INIT_MODE; 3755 } 3756 } 3757 3758 if (getSettings().getNavDump()) { 3759 switch (keyCode) { 3760 case KeyEvent.KEYCODE_4: 3761 dumpDisplayTree(); 3762 break; 3763 case KeyEvent.KEYCODE_5: 3764 case KeyEvent.KEYCODE_6: 3765 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 3766 break; 3767 case KeyEvent.KEYCODE_7: 3768 case KeyEvent.KEYCODE_8: 3769 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 3770 break; 3771 case KeyEvent.KEYCODE_9: 3772 nativeInstrumentReport(); 3773 return true; 3774 } 3775 } 3776 3777 if (nativeCursorIsTextInput()) { 3778 // This message will put the node in focus, for the DOM's notion 3779 // of focus, and make the focuscontroller active 3780 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3781 nativeCursorNodePointer()); 3782 // This will bring up the WebTextView and put it in focus, for 3783 // our view system's notion of focus 3784 rebuildWebTextView(); 3785 // Now we need to pass the event to it 3786 if (inEditingMode()) { 3787 mWebTextView.setDefaultSelection(); 3788 return mWebTextView.dispatchKeyEvent(event); 3789 } 3790 } else if (nativeHasFocusNode()) { 3791 // In this case, the cursor is not on a text input, but the focus 3792 // might be. Check it, and if so, hand over to the WebTextView. 3793 rebuildWebTextView(); 3794 if (inEditingMode()) { 3795 mWebTextView.setDefaultSelection(); 3796 return mWebTextView.dispatchKeyEvent(event); 3797 } 3798 } 3799 3800 // TODO: should we pass all the keys to DOM or check the meta tag 3801 if (nativeCursorWantsKeyEvents() || true) { 3802 // pass the key to DOM 3803 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3804 // return true as DOM handles the key 3805 return true; 3806 } 3807 3808 // Bubble up the key event as WebView doesn't handle it 3809 return false; 3810 } 3811 3812 @Override 3813 public boolean onKeyUp(int keyCode, KeyEvent event) { 3814 if (DebugFlags.WEB_VIEW) { 3815 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3816 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3817 } 3818 3819 if (mNativeClass == 0) { 3820 return false; 3821 } 3822 3823 // special CALL handling when cursor node's href is "tel:XXX" 3824 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3825 String text = nativeCursorText(); 3826 if (!nativeCursorIsTextInput() && text != null 3827 && text.startsWith(SCHEME_TEL)) { 3828 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3829 getContext().startActivity(intent); 3830 return true; 3831 } 3832 } 3833 3834 // Bubble up the key event if 3835 // 1. it is a system key; or 3836 // 2. the host application wants to handle it; 3837 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3838 return false; 3839 } 3840 3841 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3842 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3843 if (nativeFocusIsPlugin()) { 3844 mShiftIsPressed = false; 3845 return true; 3846 } else if (commitCopy()) { 3847 return true; 3848 } 3849 } 3850 3851 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3852 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3853 if (nativeFocusIsPlugin()) { 3854 letPluginHandleNavKey(keyCode, event.getEventTime(), false); 3855 return true; 3856 } 3857 // always handle the navigation keys in the UI thread 3858 // Bubble up the key event as WebView doesn't handle it 3859 return false; 3860 } 3861 3862 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3863 // remove the long press message first 3864 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3865 mGotCenterDown = false; 3866 3867 if (mShiftIsPressed && !nativeFocusIsPlugin()) { 3868 if (mExtendSelection) { 3869 commitCopy(); 3870 } else { 3871 mExtendSelection = true; 3872 invalidate(); // draw the i-beam instead of the arrow 3873 } 3874 return true; // discard press if copy in progress 3875 } 3876 3877 // perform the single click 3878 Rect visibleRect = sendOurVisibleRect(); 3879 // Note that sendOurVisibleRect calls viewToContent, so the 3880 // coordinates should be in content coordinates. 3881 if (!nativeCursorIntersects(visibleRect)) { 3882 return false; 3883 } 3884 WebViewCore.CursorData data = cursorData(); 3885 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3886 playSoundEffect(SoundEffectConstants.CLICK); 3887 if (nativeCursorIsTextInput()) { 3888 rebuildWebTextView(); 3889 centerKeyPressOnTextField(); 3890 if (inEditingMode()) { 3891 mWebTextView.setDefaultSelection(); 3892 } 3893 return true; 3894 } 3895 clearTextEntry(true); 3896 nativeSetFollowedLink(true); 3897 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 3898 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3899 nativeCursorNodePointer()); 3900 } 3901 return true; 3902 } 3903 3904 // TODO: should we pass all the keys to DOM or check the meta tag 3905 if (nativeCursorWantsKeyEvents() || true) { 3906 // pass the key to DOM 3907 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3908 // return true as DOM handles the key 3909 return true; 3910 } 3911 3912 // Bubble up the key event as WebView doesn't handle it 3913 return false; 3914 } 3915 3916 private void setUpSelectXY() { 3917 mExtendSelection = false; 3918 mShiftIsPressed = true; 3919 if (nativeHasCursorNode()) { 3920 Rect rect = nativeCursorNodeBounds(); 3921 mSelectX = contentToViewX(rect.left); 3922 mSelectY = contentToViewY(rect.top); 3923 } else if (mLastTouchY > getVisibleTitleHeight()) { 3924 mSelectX = mScrollX + (int) mLastTouchX; 3925 mSelectY = mScrollY + (int) mLastTouchY; 3926 } else { 3927 mSelectX = mScrollX + getViewWidth() / 2; 3928 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 3929 } 3930 nativeHideCursor(); 3931 } 3932 3933 /** 3934 * Use this method to put the WebView into text selection mode. 3935 * Do not rely on this functionality; it will be deprecated in the future. 3936 */ 3937 public void emulateShiftHeld() { 3938 if (0 == mNativeClass) return; // client isn't initialized 3939 setUpSelectXY(); 3940 } 3941 3942 private boolean commitCopy() { 3943 boolean copiedSomething = false; 3944 if (mExtendSelection) { 3945 String selection = nativeGetSelection(); 3946 if (selection != "") { 3947 if (DebugFlags.WEB_VIEW) { 3948 Log.v(LOGTAG, "commitCopy \"" + selection + "\""); 3949 } 3950 Toast.makeText(mContext 3951 , com.android.internal.R.string.text_copied 3952 , Toast.LENGTH_SHORT).show(); 3953 copiedSomething = true; 3954 try { 3955 IClipboard clip = IClipboard.Stub.asInterface( 3956 ServiceManager.getService("clipboard")); 3957 clip.setClipboardText(selection); 3958 } catch (android.os.RemoteException e) { 3959 Log.e(LOGTAG, "Clipboard failed", e); 3960 } 3961 } 3962 mExtendSelection = false; 3963 } 3964 mShiftIsPressed = false; 3965 invalidate(); // remove selection region and pointer 3966 if (mTouchMode == TOUCH_SELECT_MODE) { 3967 mTouchMode = TOUCH_INIT_MODE; 3968 } 3969 return copiedSomething; 3970 } 3971 3972 @Override 3973 protected void onAttachedToWindow() { 3974 super.onAttachedToWindow(); 3975 if (hasWindowFocus()) onWindowFocusChanged(true); 3976 } 3977 3978 @Override 3979 protected void onDetachedFromWindow() { 3980 clearTextEntry(false); 3981 super.onDetachedFromWindow(); 3982 // Clean up the zoom controller 3983 mZoomButtonsController.setVisible(false); 3984 } 3985 3986 /** 3987 * @deprecated WebView no longer needs to implement 3988 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3989 */ 3990 @Deprecated 3991 public void onChildViewAdded(View parent, View child) {} 3992 3993 /** 3994 * @deprecated WebView no longer needs to implement 3995 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3996 */ 3997 @Deprecated 3998 public void onChildViewRemoved(View p, View child) {} 3999 4000 /** 4001 * @deprecated WebView should not have implemented 4002 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 4003 * does nothing now. 4004 */ 4005 @Deprecated 4006 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4007 } 4008 4009 // To avoid drawing the cursor ring, and remove the TextView when our window 4010 // loses focus. 4011 @Override 4012 public void onWindowFocusChanged(boolean hasWindowFocus) { 4013 if (hasWindowFocus) { 4014 if (hasFocus()) { 4015 // If our window regained focus, and we have focus, then begin 4016 // drawing the cursor ring 4017 mDrawCursorRing = true; 4018 if (mNativeClass != 0) { 4019 nativeRecordButtons(true, false, true); 4020 if (inEditingMode()) { 4021 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 4022 } 4023 } 4024 } else { 4025 // If our window gained focus, but we do not have it, do not 4026 // draw the cursor ring. 4027 mDrawCursorRing = false; 4028 // We do not call nativeRecordButtons here because we assume 4029 // that when we lost focus, or window focus, it got called with 4030 // false for the first parameter 4031 } 4032 } else { 4033 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 4034 /* 4035 * The zoom controls come in their own window, so our window 4036 * loses focus. Our policy is to not draw the cursor ring if 4037 * our window is not focused, but this is an exception since 4038 * the user can still navigate the web page with the zoom 4039 * controls showing. 4040 */ 4041 // If our window has lost focus, stop drawing the cursor ring 4042 mDrawCursorRing = false; 4043 } 4044 mGotKeyDown = false; 4045 mShiftIsPressed = false; 4046 if (mNativeClass != 0) { 4047 nativeRecordButtons(false, false, true); 4048 } 4049 setFocusControllerInactive(); 4050 } 4051 invalidate(); 4052 super.onWindowFocusChanged(hasWindowFocus); 4053 } 4054 4055 /* 4056 * Pass a message to WebCore Thread, telling the WebCore::Page's 4057 * FocusController to be "inactive" so that it will 4058 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4059 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4060 */ 4061 /* package */ void setFocusControllerInactive() { 4062 // Do not need to also check whether mWebViewCore is null, because 4063 // mNativeClass is only set if mWebViewCore is non null 4064 if (mNativeClass == 0) return; 4065 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 4066 } 4067 4068 @Override 4069 protected void onFocusChanged(boolean focused, int direction, 4070 Rect previouslyFocusedRect) { 4071 if (DebugFlags.WEB_VIEW) { 4072 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4073 } 4074 if (focused) { 4075 // When we regain focus, if we have window focus, resume drawing 4076 // the cursor ring 4077 if (hasWindowFocus()) { 4078 mDrawCursorRing = true; 4079 if (mNativeClass != 0) { 4080 nativeRecordButtons(true, false, true); 4081 } 4082 //} else { 4083 // The WebView has gained focus while we do not have 4084 // windowfocus. When our window lost focus, we should have 4085 // called nativeRecordButtons(false...) 4086 } 4087 } else { 4088 // When we lost focus, unless focus went to the TextView (which is 4089 // true if we are in editing mode), stop drawing the cursor ring. 4090 if (!inEditingMode()) { 4091 mDrawCursorRing = false; 4092 if (mNativeClass != 0) { 4093 nativeRecordButtons(false, false, true); 4094 } 4095 setFocusControllerInactive(); 4096 } 4097 mGotKeyDown = false; 4098 } 4099 4100 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4101 } 4102 4103 /** 4104 * @hide 4105 */ 4106 @Override 4107 protected boolean setFrame(int left, int top, int right, int bottom) { 4108 boolean changed = super.setFrame(left, top, right, bottom); 4109 if (!changed && mHeightCanMeasure) { 4110 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4111 // in WebViewCore after we get the first layout. We do call 4112 // requestLayout() when we get contentSizeChanged(). But the View 4113 // system won't call onSizeChanged if the dimension is not changed. 4114 // In this case, we need to call sendViewSizeZoom() explicitly to 4115 // notify the WebKit about the new dimensions. 4116 sendViewSizeZoom(); 4117 } 4118 return changed; 4119 } 4120 4121 private static class PostScale implements Runnable { 4122 final WebView mWebView; 4123 final boolean mUpdateTextWrap; 4124 4125 public PostScale(WebView webView, boolean updateTextWrap) { 4126 mWebView = webView; 4127 mUpdateTextWrap = updateTextWrap; 4128 } 4129 4130 public void run() { 4131 if (mWebView.mWebViewCore != null) { 4132 // we always force, in case our height changed, in which case we 4133 // still want to send the notification over to webkit. 4134 mWebView.setNewZoomScale(mWebView.mActualScale, 4135 mUpdateTextWrap, true); 4136 // update the zoom buttons as the scale can be changed 4137 if (mWebView.getSettings().getBuiltInZoomControls()) { 4138 mWebView.updateZoomButtonsEnabled(); 4139 } 4140 } 4141 } 4142 } 4143 4144 @Override 4145 protected void onSizeChanged(int w, int h, int ow, int oh) { 4146 super.onSizeChanged(w, h, ow, oh); 4147 // Center zooming to the center of the screen. 4148 if (mZoomScale == 0) { // unless we're already zooming 4149 // To anchor at top left corner. 4150 mZoomCenterX = 0; 4151 mZoomCenterY = getVisibleTitleHeight(); 4152 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4153 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4154 } 4155 4156 // adjust the max viewport width depending on the view dimensions. This 4157 // is to ensure the scaling is not going insane. So do not shrink it if 4158 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4159 int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE); 4160 if (newMaxViewportWidth > sMaxViewportWidth) { 4161 sMaxViewportWidth = newMaxViewportWidth; 4162 } 4163 4164 // update mMinZoomScale if the minimum zoom scale is not fixed 4165 if (!mMinZoomScaleFixed) { 4166 // when change from narrow screen to wide screen, the new viewWidth 4167 // can be wider than the old content width. We limit the minimum 4168 // scale to 1.0f. The proper minimum scale will be calculated when 4169 // the new picture shows up. 4170 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 4171 / (mDrawHistory ? mHistoryPicture.getWidth() 4172 : mZoomOverviewWidth)); 4173 if (mInitialScaleInPercent > 0) { 4174 // limit the minZoomScale to the initialScale if it is set 4175 float initialScale = mInitialScaleInPercent / 100.0f; 4176 if (mMinZoomScale > initialScale) { 4177 mMinZoomScale = initialScale; 4178 } 4179 } 4180 } 4181 4182 // onSizeChanged() is called during WebView layout. And any 4183 // requestLayout() is blocked during layout. As setNewZoomScale() will 4184 // call its child View to reposition itself through ViewManager's 4185 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 4186 // <b/> 4187 // only update the text wrap scale if width changed. 4188 post(new PostScale(this, w != ow)); 4189 } 4190 4191 @Override 4192 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4193 super.onScrollChanged(l, t, oldl, oldt); 4194 sendOurVisibleRect(); 4195 // update WebKit if visible title bar height changed. The logic is same 4196 // as getVisibleTitleHeight. 4197 int titleHeight = getTitleHeight(); 4198 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4199 sendViewSizeZoom(); 4200 } 4201 } 4202 4203 @Override 4204 public boolean dispatchKeyEvent(KeyEvent event) { 4205 boolean dispatch = true; 4206 4207 // Textfields and plugins need to receive the shift up key even if 4208 // another key was released while the shift key was held down. 4209 if (!inEditingMode() && !nativeFocusIsPlugin()) { 4210 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4211 mGotKeyDown = true; 4212 } else { 4213 if (!mGotKeyDown) { 4214 /* 4215 * We got a key up for which we were not the recipient of 4216 * the original key down. Don't give it to the view. 4217 */ 4218 dispatch = false; 4219 } 4220 mGotKeyDown = false; 4221 } 4222 } 4223 4224 if (dispatch) { 4225 return super.dispatchKeyEvent(event); 4226 } else { 4227 // We didn't dispatch, so let something else handle the key 4228 return false; 4229 } 4230 } 4231 4232 // Here are the snap align logic: 4233 // 1. If it starts nearly horizontally or vertically, snap align; 4234 // 2. If there is a dramitic direction change, let it go; 4235 // 3. If there is a same direction back and forth, lock it. 4236 4237 // adjustable parameters 4238 private int mMinLockSnapReverseDistance; 4239 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4240 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4241 4242 private static int sign(float x) { 4243 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4244 } 4245 4246 // if the page can scroll <= this value, we won't allow the drag tracker 4247 // to have any effect. 4248 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4249 4250 private class DragTrackerHandler { 4251 private final DragTracker mProxy; 4252 private final float mStartY, mStartX; 4253 private final float mMinDY, mMinDX; 4254 private final float mMaxDY, mMaxDX; 4255 private float mCurrStretchY, mCurrStretchX; 4256 private int mSX, mSY; 4257 private Interpolator mInterp; 4258 private float[] mXY = new float[2]; 4259 4260 // inner (non-state) classes can't have enums :( 4261 private static final int DRAGGING_STATE = 0; 4262 private static final int ANIMATING_STATE = 1; 4263 private static final int FINISHED_STATE = 2; 4264 private int mState; 4265 4266 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4267 mProxy = proxy; 4268 4269 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4270 int viewTop = getScrollY(); 4271 int viewBottom = viewTop + getHeight(); 4272 4273 mStartY = y; 4274 mMinDY = -viewTop; 4275 mMaxDY = docBottom - viewBottom; 4276 4277 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4278 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4279 " up/down= " + mMinDY + " " + mMaxDY); 4280 } 4281 4282 int docRight = computeHorizontalScrollRange(); 4283 int viewLeft = getScrollX(); 4284 int viewRight = viewLeft + getWidth(); 4285 mStartX = x; 4286 mMinDX = -viewLeft; 4287 mMaxDX = docRight - viewRight; 4288 4289 mState = DRAGGING_STATE; 4290 mProxy.onStartDrag(x, y); 4291 4292 // ensure we buildBitmap at least once 4293 mSX = -99999; 4294 } 4295 4296 private float computeStretch(float delta, float min, float max) { 4297 float stretch = 0; 4298 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4299 if (delta < min) { 4300 stretch = delta - min; 4301 } else if (delta > max) { 4302 stretch = delta - max; 4303 } 4304 } 4305 return stretch; 4306 } 4307 4308 public void dragTo(float x, float y) { 4309 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4310 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4311 4312 if ((mSnapScrollMode & SNAP_X) != 0) { 4313 sy = 0; 4314 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4315 sx = 0; 4316 } 4317 4318 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4319 mCurrStretchX = sx; 4320 mCurrStretchY = sy; 4321 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4322 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4323 " " + sy); 4324 } 4325 if (mProxy.onStretchChange(sx, sy)) { 4326 invalidate(); 4327 } 4328 } 4329 } 4330 4331 public void stopDrag() { 4332 final int DURATION = 200; 4333 int now = (int)SystemClock.uptimeMillis(); 4334 mInterp = new Interpolator(2); 4335 mXY[0] = mCurrStretchX; 4336 mXY[1] = mCurrStretchY; 4337 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4338 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4339 mInterp.setKeyFrame(0, now, mXY, blend); 4340 float[] zerozero = new float[] { 0, 0 }; 4341 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4342 mState = ANIMATING_STATE; 4343 4344 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4345 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4346 } 4347 } 4348 4349 // Call this after each draw. If it ruturns null, the tracker is done 4350 public boolean isFinished() { 4351 return mState == FINISHED_STATE; 4352 } 4353 4354 private int hiddenHeightOfTitleBar() { 4355 return getTitleHeight() - getVisibleTitleHeight(); 4356 } 4357 4358 // need a way to know if 565 or 8888 is the right config for 4359 // capturing the display and giving it to the drag proxy 4360 private Bitmap.Config offscreenBitmapConfig() { 4361 // hard code 565 for now 4362 return Bitmap.Config.RGB_565; 4363 } 4364 4365 /* If the tracker draws, then this returns true, otherwise it will 4366 return false, and draw nothing. 4367 */ 4368 public boolean draw(Canvas canvas) { 4369 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4370 int sx = getScrollX(); 4371 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4372 if (mSX != sx || mSY != sy) { 4373 buildBitmap(sx, sy); 4374 mSX = sx; 4375 mSY = sy; 4376 } 4377 4378 if (mState == ANIMATING_STATE) { 4379 Interpolator.Result result = mInterp.timeToValues(mXY); 4380 if (result == Interpolator.Result.FREEZE_END) { 4381 mState = FINISHED_STATE; 4382 return false; 4383 } else { 4384 mProxy.onStretchChange(mXY[0], mXY[1]); 4385 invalidate(); 4386 // fall through to the draw 4387 } 4388 } 4389 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4390 canvas.translate(sx, sy); 4391 mProxy.onDraw(canvas); 4392 canvas.restoreToCount(count); 4393 return true; 4394 } 4395 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4396 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4397 mCurrStretchX + " " + mCurrStretchY); 4398 } 4399 return false; 4400 } 4401 4402 private void buildBitmap(int sx, int sy) { 4403 int w = getWidth(); 4404 int h = getViewHeight(); 4405 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4406 Canvas canvas = new Canvas(bm); 4407 canvas.translate(-sx, -sy); 4408 drawContent(canvas); 4409 4410 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4411 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4412 " " + sy + " " + w + " " + h); 4413 } 4414 mProxy.onBitmapChange(bm); 4415 } 4416 } 4417 4418 /** @hide */ 4419 public static class DragTracker { 4420 public void onStartDrag(float x, float y) {} 4421 public boolean onStretchChange(float sx, float sy) { 4422 // return true to have us inval the view 4423 return false; 4424 } 4425 public void onStopDrag() {} 4426 public void onBitmapChange(Bitmap bm) {} 4427 public void onDraw(Canvas canvas) {} 4428 } 4429 4430 /** @hide */ 4431 public DragTracker getDragTracker() { 4432 return mDragTracker; 4433 } 4434 4435 /** @hide */ 4436 public void setDragTracker(DragTracker tracker) { 4437 mDragTracker = tracker; 4438 } 4439 4440 private DragTracker mDragTracker; 4441 private DragTrackerHandler mDragTrackerHandler; 4442 4443 private class ScaleDetectorListener implements 4444 ScaleGestureDetector.OnScaleGestureListener { 4445 4446 public boolean onScaleBegin(ScaleGestureDetector detector) { 4447 // cancel the single touch handling 4448 cancelTouch(); 4449 if (mZoomButtonsController.isVisible()) { 4450 mZoomButtonsController.setVisible(false); 4451 } 4452 // reset the zoom overview mode so that the page won't auto grow 4453 mInZoomOverview = false; 4454 // If it is in password mode, turn it off so it does not draw 4455 // misplaced. 4456 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4457 mWebTextView.setInPassword(false); 4458 } 4459 return true; 4460 } 4461 4462 public void onScaleEnd(ScaleGestureDetector detector) { 4463 if (mPreviewZoomOnly) { 4464 mPreviewZoomOnly = false; 4465 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4466 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4467 // don't reflow when zoom in; when zoom out, do reflow if the 4468 // new scale is almost minimum scale; 4469 boolean reflowNow = (mActualScale - mMinZoomScale <= 0.01f) 4470 || ((mActualScale <= 0.8 * mTextWrapScale)); 4471 // force zoom after mPreviewZoomOnly is set to false so that the 4472 // new view size will be passed to the WebKit 4473 setNewZoomScale(mActualScale, reflowNow, true); 4474 // call invalidate() to draw without zoom filter 4475 invalidate(); 4476 } 4477 // adjust the edit text view if needed 4478 if (inEditingMode() && didUpdateTextViewBounds(false) 4479 && nativeFocusCandidateIsPassword()) { 4480 // If it is a password field, start drawing the 4481 // WebTextView once again. 4482 mWebTextView.setInPassword(true); 4483 } 4484 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4485 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4486 // may trigger the unwanted fling. 4487 mTouchMode = TOUCH_PINCH_DRAG; 4488 mConfirmMove = true; 4489 startTouch(detector.getFocusX(), detector.getFocusY(), 4490 mLastTouchTime); 4491 } 4492 4493 public boolean onScale(ScaleGestureDetector detector) { 4494 float scale = (float) (Math.round(detector.getScaleFactor() 4495 * mActualScale * 100) / 100.0); 4496 if (Math.abs(scale - mActualScale) >= PREVIEW_SCALE_INCREMENT) { 4497 mPreviewZoomOnly = true; 4498 // limit the scale change per step 4499 if (scale > mActualScale) { 4500 scale = Math.min(scale, mActualScale * 1.25f); 4501 } else { 4502 scale = Math.max(scale, mActualScale * 0.8f); 4503 } 4504 mZoomCenterX = detector.getFocusX(); 4505 mZoomCenterY = detector.getFocusY(); 4506 setNewZoomScale(scale, false, false); 4507 invalidate(); 4508 return true; 4509 } 4510 return false; 4511 } 4512 } 4513 4514 private boolean hitFocusedPlugin(int contentX, int contentY) { 4515 return nativeFocusIsPlugin() 4516 && nativePointInNavCache(contentX, contentY, mNavSlop) 4517 && nativeCacheHitNodePointer() == nativeFocusNodePointer(); 4518 } 4519 4520 private boolean shouldForwardTouchEvent() { 4521 return mFullScreenHolder != null || (mForwardTouchEvents 4522 && mTouchMode != TOUCH_SELECT_MODE 4523 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 4524 } 4525 4526 private boolean inFullScreenMode() { 4527 return mFullScreenHolder != null; 4528 } 4529 4530 @Override 4531 public boolean onTouchEvent(MotionEvent ev) { 4532 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4533 return false; 4534 } 4535 4536 if (DebugFlags.WEB_VIEW) { 4537 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4538 + mTouchMode); 4539 } 4540 4541 int action; 4542 float x, y; 4543 long eventTime = ev.getEventTime(); 4544 4545 // FIXME: we may consider to give WebKit an option to handle multi-touch 4546 // events later. 4547 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 4548 if (mMinZoomScale < mMaxZoomScale) { 4549 mScaleDetector.onTouchEvent(ev); 4550 if (mScaleDetector.isInProgress()) { 4551 mLastTouchTime = eventTime; 4552 return true; 4553 } 4554 x = mScaleDetector.getFocusX(); 4555 y = mScaleDetector.getFocusY(); 4556 action = ev.getAction() & MotionEvent.ACTION_MASK; 4557 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4558 cancelTouch(); 4559 action = MotionEvent.ACTION_DOWN; 4560 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4561 // set mLastTouchX/Y to the remaining point 4562 mLastTouchX = x; 4563 mLastTouchY = y; 4564 } else if (action == MotionEvent.ACTION_MOVE) { 4565 // negative x or y indicate it is on the edge, skip it. 4566 if (x < 0 || y < 0) { 4567 return true; 4568 } 4569 } 4570 } else { 4571 // if the page disallow zoom, skip multi-pointer action 4572 return true; 4573 } 4574 } else { 4575 action = ev.getAction(); 4576 x = ev.getX(); 4577 y = ev.getY(); 4578 } 4579 4580 // Due to the touch screen edge effect, a touch closer to the edge 4581 // always snapped to the edge. As getViewWidth() can be different from 4582 // getWidth() due to the scrollbar, adjusting the point to match 4583 // getViewWidth(). Same applied to the height. 4584 if (x > getViewWidth() - 1) { 4585 x = getViewWidth() - 1; 4586 } 4587 if (y > getViewHeightWithTitle() - 1) { 4588 y = getViewHeightWithTitle() - 1; 4589 } 4590 4591 float fDeltaX = mLastTouchX - x; 4592 float fDeltaY = mLastTouchY - y; 4593 int deltaX = (int) fDeltaX; 4594 int deltaY = (int) fDeltaY; 4595 int contentX = viewToContentX((int) x + mScrollX); 4596 int contentY = viewToContentY((int) y + mScrollY); 4597 4598 switch (action) { 4599 case MotionEvent.ACTION_DOWN: { 4600 mPreventDefault = PREVENT_DEFAULT_NO; 4601 mConfirmMove = false; 4602 if (!mScroller.isFinished()) { 4603 // stop the current scroll animation, but if this is 4604 // the start of a fling, allow it to add to the current 4605 // fling's velocity 4606 mScroller.abortAnimation(); 4607 mTouchMode = TOUCH_DRAG_START_MODE; 4608 mConfirmMove = true; 4609 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 4610 } else if (!inFullScreenMode() && mShiftIsPressed) { 4611 mSelectX = mScrollX + (int) x; 4612 mSelectY = mScrollY + (int) y; 4613 mTouchMode = TOUCH_SELECT_MODE; 4614 if (DebugFlags.WEB_VIEW) { 4615 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 4616 } 4617 nativeMoveSelection(contentX, contentY, false); 4618 mTouchSelection = mExtendSelection = true; 4619 invalidate(); // draw the i-beam instead of the arrow 4620 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4621 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4622 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4623 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4624 } else { 4625 // commit the short press action for the previous tap 4626 doShortPress(); 4627 mTouchMode = TOUCH_INIT_MODE; 4628 mDeferTouchProcess = (!inFullScreenMode() 4629 && mForwardTouchEvents) ? hitFocusedPlugin( 4630 contentX, contentY) : false; 4631 } 4632 } else { // the normal case 4633 mPreviewZoomOnly = false; 4634 mTouchMode = TOUCH_INIT_MODE; 4635 mDeferTouchProcess = (!inFullScreenMode() 4636 && mForwardTouchEvents) ? hitFocusedPlugin( 4637 contentX, contentY) : false; 4638 mWebViewCore.sendMessage( 4639 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4640 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4641 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 4642 (eventTime - mLastTouchUpTime), eventTime); 4643 } 4644 } 4645 // Trigger the link 4646 if (mTouchMode == TOUCH_INIT_MODE 4647 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4648 mPrivateHandler.sendEmptyMessageDelayed( 4649 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 4650 mPrivateHandler.sendEmptyMessageDelayed( 4651 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 4652 if (inFullScreenMode() || mDeferTouchProcess) { 4653 mPreventDefault = PREVENT_DEFAULT_YES; 4654 } else if (mForwardTouchEvents) { 4655 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 4656 } else { 4657 mPreventDefault = PREVENT_DEFAULT_NO; 4658 } 4659 // pass the touch events from UI thread to WebCore thread 4660 if (shouldForwardTouchEvent()) { 4661 TouchEventData ted = new TouchEventData(); 4662 ted.mAction = action; 4663 ted.mX = contentX; 4664 ted.mY = contentY; 4665 ted.mMetaState = ev.getMetaState(); 4666 ted.mReprocess = mDeferTouchProcess; 4667 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4668 if (mDeferTouchProcess) { 4669 // still needs to set them for compute deltaX/Y 4670 mLastTouchX = x; 4671 mLastTouchY = y; 4672 break; 4673 } 4674 if (!inFullScreenMode()) { 4675 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4676 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4677 action, 0), TAP_TIMEOUT); 4678 } 4679 } 4680 } 4681 startTouch(x, y, eventTime); 4682 break; 4683 } 4684 case MotionEvent.ACTION_MOVE: { 4685 boolean firstMove = false; 4686 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 4687 >= mTouchSlopSquare) { 4688 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4689 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4690 mConfirmMove = true; 4691 firstMove = true; 4692 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4693 mTouchMode = TOUCH_INIT_MODE; 4694 } 4695 } 4696 // pass the touch events from UI thread to WebCore thread 4697 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 4698 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 4699 TouchEventData ted = new TouchEventData(); 4700 ted.mAction = action; 4701 ted.mX = contentX; 4702 ted.mY = contentY; 4703 ted.mMetaState = ev.getMetaState(); 4704 ted.mReprocess = mDeferTouchProcess; 4705 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4706 mLastSentTouchTime = eventTime; 4707 if (mDeferTouchProcess) { 4708 break; 4709 } 4710 if (firstMove && !inFullScreenMode()) { 4711 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4712 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4713 action, 0), TAP_TIMEOUT); 4714 } 4715 } 4716 if (mTouchMode == TOUCH_DONE_MODE 4717 || mPreventDefault == PREVENT_DEFAULT_YES) { 4718 // no dragging during scroll zoom animation, or when prevent 4719 // default is yes 4720 break; 4721 } 4722 if (mVelocityTracker == null) { 4723 Log.e(LOGTAG, "Got null mVelocityTracker when " 4724 + "mPreventDefault = " + mPreventDefault 4725 + " mDeferTouchProcess = " + mDeferTouchProcess 4726 + " mTouchMode = " + mTouchMode); 4727 } 4728 mVelocityTracker.addMovement(ev); 4729 if (mTouchMode != TOUCH_DRAG_MODE) { 4730 if (mTouchMode == TOUCH_SELECT_MODE) { 4731 mSelectX = mScrollX + (int) x; 4732 mSelectY = mScrollY + (int) y; 4733 if (DebugFlags.WEB_VIEW) { 4734 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 4735 } 4736 nativeMoveSelection(contentX, contentY, true); 4737 invalidate(); 4738 break; 4739 } 4740 if (!mConfirmMove) { 4741 break; 4742 } 4743 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 4744 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 4745 // track mLastTouchTime as we may need to do fling at 4746 // ACTION_UP 4747 mLastTouchTime = eventTime; 4748 break; 4749 } 4750 // if it starts nearly horizontal or vertical, enforce it 4751 int ax = Math.abs(deltaX); 4752 int ay = Math.abs(deltaY); 4753 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4754 mSnapScrollMode = SNAP_X; 4755 mSnapPositive = deltaX > 0; 4756 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4757 mSnapScrollMode = SNAP_Y; 4758 mSnapPositive = deltaY > 0; 4759 } 4760 4761 mTouchMode = TOUCH_DRAG_MODE; 4762 mLastTouchX = x; 4763 mLastTouchY = y; 4764 fDeltaX = 0.0f; 4765 fDeltaY = 0.0f; 4766 deltaX = 0; 4767 deltaY = 0; 4768 4769 startDrag(); 4770 } 4771 4772 if (mDragTrackerHandler != null) { 4773 mDragTrackerHandler.dragTo(x, y); 4774 } 4775 4776 // do pan 4777 boolean done = false; 4778 boolean keepScrollBarsVisible = false; 4779 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 4780 keepScrollBarsVisible = done = true; 4781 } else { 4782 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4783 int ax = Math.abs(deltaX); 4784 int ay = Math.abs(deltaY); 4785 if (mSnapScrollMode == SNAP_X) { 4786 // radical change means getting out of snap mode 4787 if (ay > MAX_SLOPE_FOR_DIAG * ax 4788 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4789 mSnapScrollMode = SNAP_NONE; 4790 } 4791 // reverse direction means lock in the snap mode 4792 if (ax > MAX_SLOPE_FOR_DIAG * ay && 4793 (mSnapPositive 4794 ? deltaX < -mMinLockSnapReverseDistance 4795 : deltaX > mMinLockSnapReverseDistance)) { 4796 mSnapScrollMode |= SNAP_LOCK; 4797 } 4798 } else { 4799 // radical change means getting out of snap mode 4800 if (ax > MAX_SLOPE_FOR_DIAG * ay 4801 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4802 mSnapScrollMode = SNAP_NONE; 4803 } 4804 // reverse direction means lock in the snap mode 4805 if (ay > MAX_SLOPE_FOR_DIAG * ax && 4806 (mSnapPositive 4807 ? deltaY < -mMinLockSnapReverseDistance 4808 : deltaY > mMinLockSnapReverseDistance)) { 4809 mSnapScrollMode |= SNAP_LOCK; 4810 } 4811 } 4812 } 4813 if (mSnapScrollMode != SNAP_NONE) { 4814 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 4815 deltaY = 0; 4816 } else { 4817 deltaX = 0; 4818 } 4819 } 4820 if ((deltaX | deltaY) != 0) { 4821 if (deltaX != 0) { 4822 mLastTouchX = x; 4823 } 4824 if (deltaY != 0) { 4825 mLastTouchY = y; 4826 } 4827 mHeldMotionless = MOTIONLESS_FALSE; 4828 } else { 4829 // keep the scrollbar on the screen even there is no 4830 // scroll 4831 keepScrollBarsVisible = true; 4832 } 4833 mLastTouchTime = eventTime; 4834 mUserScroll = true; 4835 } 4836 4837 doDrag(deltaX, deltaY); 4838 4839 if (keepScrollBarsVisible) { 4840 if (mHeldMotionless != MOTIONLESS_TRUE) { 4841 mHeldMotionless = MOTIONLESS_TRUE; 4842 invalidate(); 4843 } 4844 // keep the scrollbar on the screen even there is no scroll 4845 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 4846 false); 4847 // return false to indicate that we can't pan out of the 4848 // view space 4849 return !done; 4850 } 4851 break; 4852 } 4853 case MotionEvent.ACTION_UP: { 4854 // pass the touch events from UI thread to WebCore thread 4855 if (shouldForwardTouchEvent()) { 4856 TouchEventData ted = new TouchEventData(); 4857 ted.mAction = action; 4858 ted.mX = contentX; 4859 ted.mY = contentY; 4860 ted.mMetaState = ev.getMetaState(); 4861 ted.mReprocess = mDeferTouchProcess; 4862 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4863 } 4864 mLastTouchUpTime = eventTime; 4865 switch (mTouchMode) { 4866 case TOUCH_DOUBLE_TAP_MODE: // double tap 4867 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4868 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4869 if (inFullScreenMode() || mDeferTouchProcess) { 4870 TouchEventData ted = new TouchEventData(); 4871 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 4872 ted.mX = contentX; 4873 ted.mY = contentY; 4874 ted.mMetaState = ev.getMetaState(); 4875 ted.mReprocess = mDeferTouchProcess; 4876 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4877 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 4878 doDoubleTap(); 4879 mTouchMode = TOUCH_DONE_MODE; 4880 } 4881 break; 4882 case TOUCH_SELECT_MODE: 4883 commitCopy(); 4884 mTouchSelection = false; 4885 break; 4886 case TOUCH_INIT_MODE: // tap 4887 case TOUCH_SHORTPRESS_START_MODE: 4888 case TOUCH_SHORTPRESS_MODE: 4889 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4890 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4891 if (mConfirmMove) { 4892 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 4893 " WebCore's response for touch down."); 4894 if (mPreventDefault != PREVENT_DEFAULT_YES 4895 && (computeMaxScrollX() > 0 4896 || computeMaxScrollY() > 0)) { 4897 // UI takes control back, cancel WebCore touch 4898 cancelWebCoreTouchEvent(contentX, contentY, 4899 true); 4900 // we will not rewrite drag code here, but we 4901 // will try fling if it applies. 4902 WebViewCore.reducePriority(); 4903 // fall through to TOUCH_DRAG_MODE 4904 } else { 4905 break; 4906 } 4907 } else { 4908 if (mTouchMode == TOUCH_INIT_MODE) { 4909 mPrivateHandler.sendEmptyMessageDelayed( 4910 RELEASE_SINGLE_TAP, ViewConfiguration 4911 .getDoubleTapTimeout()); 4912 } else { 4913 doShortPress(); 4914 } 4915 break; 4916 } 4917 case TOUCH_DRAG_MODE: 4918 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4919 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4920 mHeldMotionless = MOTIONLESS_TRUE; 4921 // redraw in high-quality, as we're done dragging 4922 invalidate(); 4923 // if the user waits a while w/o moving before the 4924 // up, we don't want to do a fling 4925 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4926 if (mVelocityTracker == null) { 4927 Log.e(LOGTAG, "Got null mVelocityTracker when " 4928 + "mPreventDefault = " 4929 + mPreventDefault 4930 + " mDeferTouchProcess = " 4931 + mDeferTouchProcess); 4932 } 4933 mVelocityTracker.addMovement(ev); 4934 doFling(); 4935 break; 4936 } else { 4937 if (mScroller.springback(mScrollX, mScrollY, 0, 4938 computeMaxScrollX(), 0, 4939 computeMaxScrollY())) { 4940 invalidate(); 4941 } 4942 } 4943 mLastVelocity = 0; 4944 WebViewCore.resumePriority(); 4945 break; 4946 } 4947 stopTouch(); 4948 break; 4949 } 4950 case MotionEvent.ACTION_CANCEL: { 4951 if (mTouchMode == TOUCH_DRAG_MODE) { 4952 mScroller.springback(mScrollX, mScrollY, 0, 4953 computeMaxScrollX(), 0, computeMaxScrollY()); 4954 invalidate(); 4955 } 4956 cancelWebCoreTouchEvent(contentX, contentY, false); 4957 cancelTouch(); 4958 break; 4959 } 4960 } 4961 return true; 4962 } 4963 4964 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 4965 if (shouldForwardTouchEvent()) { 4966 if (removeEvents) { 4967 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 4968 } 4969 TouchEventData ted = new TouchEventData(); 4970 ted.mX = x; 4971 ted.mY = y; 4972 ted.mAction = MotionEvent.ACTION_CANCEL; 4973 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4974 mPreventDefault = PREVENT_DEFAULT_IGNORE; 4975 } 4976 } 4977 4978 private void startTouch(float x, float y, long eventTime) { 4979 // Remember where the motion event started 4980 mLastTouchX = x; 4981 mLastTouchY = y; 4982 mLastTouchTime = eventTime; 4983 mVelocityTracker = VelocityTracker.obtain(); 4984 mSnapScrollMode = SNAP_NONE; 4985 if (mDragTracker != null) { 4986 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 4987 } 4988 } 4989 4990 private void startDrag() { 4991 WebViewCore.reducePriority(); 4992 if (!mDragFromTextInput) { 4993 nativeHideCursor(); 4994 } 4995 WebSettings settings = getSettings(); 4996 if (settings.supportZoom() 4997 && settings.getBuiltInZoomControls() 4998 && !mZoomButtonsController.isVisible() 4999 && mMinZoomScale < mMaxZoomScale) { 5000 mZoomButtonsController.setVisible(true); 5001 int count = settings.getDoubleTapToastCount(); 5002 if (mInZoomOverview && count > 0) { 5003 settings.setDoubleTapToastCount(--count); 5004 Toast.makeText(mContext, 5005 com.android.internal.R.string.double_tap_toast, 5006 Toast.LENGTH_LONG).show(); 5007 } 5008 } 5009 } 5010 5011 private void doDrag(int deltaX, int deltaY) { 5012 if ((deltaX | deltaY) != 0) { 5013 overscrollBy(deltaX, deltaY, mScrollX, mScrollY, 5014 computeMaxScrollX(), computeMaxScrollY(), 5015 getViewWidth() / 3, getViewHeight() / 3); 5016 } 5017 if (!getSettings().getBuiltInZoomControls()) { 5018 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 5019 if (mZoomControls != null && showPlusMinus) { 5020 if (mZoomControls.getVisibility() == View.VISIBLE) { 5021 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5022 } else { 5023 mZoomControls.show(showPlusMinus, false); 5024 } 5025 mPrivateHandler.postDelayed(mZoomControlRunnable, 5026 ZOOM_CONTROLS_TIMEOUT); 5027 } 5028 } 5029 } 5030 5031 private void stopTouch() { 5032 if (mDragTrackerHandler != null) { 5033 mDragTrackerHandler.stopDrag(); 5034 } 5035 // we also use mVelocityTracker == null to tell us that we are 5036 // not "moving around", so we can take the slower/prettier 5037 // mode in the drawing code 5038 if (mVelocityTracker != null) { 5039 mVelocityTracker.recycle(); 5040 mVelocityTracker = null; 5041 } 5042 } 5043 5044 private void cancelTouch() { 5045 if (mDragTrackerHandler != null) { 5046 mDragTrackerHandler.stopDrag(); 5047 } 5048 // we also use mVelocityTracker == null to tell us that we are 5049 // not "moving around", so we can take the slower/prettier 5050 // mode in the drawing code 5051 if (mVelocityTracker != null) { 5052 mVelocityTracker.recycle(); 5053 mVelocityTracker = null; 5054 } 5055 if (mTouchMode == TOUCH_DRAG_MODE) { 5056 WebViewCore.resumePriority(); 5057 } 5058 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5059 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5060 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5061 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5062 mHeldMotionless = MOTIONLESS_TRUE; 5063 mTouchMode = TOUCH_DONE_MODE; 5064 nativeHideCursor(); 5065 } 5066 5067 private long mTrackballFirstTime = 0; 5068 private long mTrackballLastTime = 0; 5069 private float mTrackballRemainsX = 0.0f; 5070 private float mTrackballRemainsY = 0.0f; 5071 private int mTrackballXMove = 0; 5072 private int mTrackballYMove = 0; 5073 private boolean mExtendSelection = false; 5074 private boolean mTouchSelection = false; 5075 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5076 private static final int TRACKBALL_TIMEOUT = 200; 5077 private static final int TRACKBALL_WAIT = 100; 5078 private static final int TRACKBALL_SCALE = 400; 5079 private static final int TRACKBALL_SCROLL_COUNT = 5; 5080 private static final int TRACKBALL_MOVE_COUNT = 10; 5081 private static final int TRACKBALL_MULTIPLIER = 3; 5082 private static final int SELECT_CURSOR_OFFSET = 16; 5083 private int mSelectX = 0; 5084 private int mSelectY = 0; 5085 private boolean mFocusSizeChanged = false; 5086 private boolean mShiftIsPressed = false; 5087 private boolean mTrackballDown = false; 5088 private long mTrackballUpTime = 0; 5089 private long mLastCursorTime = 0; 5090 private Rect mLastCursorBounds; 5091 5092 // Set by default; BrowserActivity clears to interpret trackball data 5093 // directly for movement. Currently, the framework only passes 5094 // arrow key events, not trackball events, from one child to the next 5095 private boolean mMapTrackballToArrowKeys = true; 5096 5097 public void setMapTrackballToArrowKeys(boolean setMap) { 5098 mMapTrackballToArrowKeys = setMap; 5099 } 5100 5101 void resetTrackballTime() { 5102 mTrackballLastTime = 0; 5103 } 5104 5105 @Override 5106 public boolean onTrackballEvent(MotionEvent ev) { 5107 long time = ev.getEventTime(); 5108 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5109 if (ev.getY() > 0) pageDown(true); 5110 if (ev.getY() < 0) pageUp(true); 5111 return true; 5112 } 5113 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5114 if (mShiftIsPressed && !nativeFocusIsPlugin()) { 5115 return true; // discard press if copy in progress 5116 } 5117 mTrackballDown = true; 5118 if (mNativeClass == 0) { 5119 return false; 5120 } 5121 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5122 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5123 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5124 nativeSelectBestAt(mLastCursorBounds); 5125 } 5126 if (DebugFlags.WEB_VIEW) { 5127 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5128 + " time=" + time 5129 + " mLastCursorTime=" + mLastCursorTime); 5130 } 5131 if (isInTouchMode()) requestFocusFromTouch(); 5132 return false; // let common code in onKeyDown at it 5133 } 5134 if (ev.getAction() == MotionEvent.ACTION_UP) { 5135 // LONG_PRESS_CENTER is set in common onKeyDown 5136 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5137 mTrackballDown = false; 5138 mTrackballUpTime = time; 5139 if (mShiftIsPressed && !nativeFocusIsPlugin()) { 5140 if (mExtendSelection) { 5141 commitCopy(); 5142 } else { 5143 mExtendSelection = true; 5144 invalidate(); // draw the i-beam instead of the arrow 5145 } 5146 return true; // discard press if copy in progress 5147 } 5148 if (DebugFlags.WEB_VIEW) { 5149 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5150 + " time=" + time 5151 ); 5152 } 5153 return false; // let common code in onKeyUp at it 5154 } 5155 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 5156 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5157 return false; 5158 } 5159 if (mTrackballDown) { 5160 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5161 return true; // discard move if trackball is down 5162 } 5163 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5164 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5165 return true; 5166 } 5167 // TODO: alternatively we can do panning as touch does 5168 switchOutDrawHistory(); 5169 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5170 if (DebugFlags.WEB_VIEW) { 5171 Log.v(LOGTAG, "onTrackballEvent time=" 5172 + time + " last=" + mTrackballLastTime); 5173 } 5174 mTrackballFirstTime = time; 5175 mTrackballXMove = mTrackballYMove = 0; 5176 } 5177 mTrackballLastTime = time; 5178 if (DebugFlags.WEB_VIEW) { 5179 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5180 } 5181 mTrackballRemainsX += ev.getX(); 5182 mTrackballRemainsY += ev.getY(); 5183 doTrackball(time); 5184 return true; 5185 } 5186 5187 void moveSelection(float xRate, float yRate) { 5188 if (mNativeClass == 0) 5189 return; 5190 int width = getViewWidth(); 5191 int height = getViewHeight(); 5192 mSelectX += xRate; 5193 mSelectY += yRate; 5194 int maxX = width + mScrollX; 5195 int maxY = height + mScrollY; 5196 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5197 , mSelectX)); 5198 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5199 , mSelectY)); 5200 if (DebugFlags.WEB_VIEW) { 5201 Log.v(LOGTAG, "moveSelection" 5202 + " mSelectX=" + mSelectX 5203 + " mSelectY=" + mSelectY 5204 + " mScrollX=" + mScrollX 5205 + " mScrollY=" + mScrollY 5206 + " xRate=" + xRate 5207 + " yRate=" + yRate 5208 ); 5209 } 5210 nativeMoveSelection(viewToContentX(mSelectX), 5211 viewToContentY(mSelectY), mExtendSelection); 5212 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5213 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5214 : 0; 5215 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5216 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5217 : 0; 5218 pinScrollBy(scrollX, scrollY, true, 0); 5219 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5220 requestRectangleOnScreen(select); 5221 invalidate(); 5222 } 5223 5224 private int scaleTrackballX(float xRate, int width) { 5225 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5226 int nextXMove = xMove; 5227 if (xMove > 0) { 5228 if (xMove > mTrackballXMove) { 5229 xMove -= mTrackballXMove; 5230 } 5231 } else if (xMove < mTrackballXMove) { 5232 xMove -= mTrackballXMove; 5233 } 5234 mTrackballXMove = nextXMove; 5235 return xMove; 5236 } 5237 5238 private int scaleTrackballY(float yRate, int height) { 5239 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5240 int nextYMove = yMove; 5241 if (yMove > 0) { 5242 if (yMove > mTrackballYMove) { 5243 yMove -= mTrackballYMove; 5244 } 5245 } else if (yMove < mTrackballYMove) { 5246 yMove -= mTrackballYMove; 5247 } 5248 mTrackballYMove = nextYMove; 5249 return yMove; 5250 } 5251 5252 private int keyCodeToSoundsEffect(int keyCode) { 5253 switch(keyCode) { 5254 case KeyEvent.KEYCODE_DPAD_UP: 5255 return SoundEffectConstants.NAVIGATION_UP; 5256 case KeyEvent.KEYCODE_DPAD_RIGHT: 5257 return SoundEffectConstants.NAVIGATION_RIGHT; 5258 case KeyEvent.KEYCODE_DPAD_DOWN: 5259 return SoundEffectConstants.NAVIGATION_DOWN; 5260 case KeyEvent.KEYCODE_DPAD_LEFT: 5261 return SoundEffectConstants.NAVIGATION_LEFT; 5262 } 5263 throw new IllegalArgumentException("keyCode must be one of " + 5264 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5265 "KEYCODE_DPAD_LEFT}."); 5266 } 5267 5268 private void doTrackball(long time) { 5269 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5270 if (elapsed == 0) { 5271 elapsed = TRACKBALL_TIMEOUT; 5272 } 5273 float xRate = mTrackballRemainsX * 1000 / elapsed; 5274 float yRate = mTrackballRemainsY * 1000 / elapsed; 5275 int viewWidth = getViewWidth(); 5276 int viewHeight = getViewHeight(); 5277 if (mShiftIsPressed && !nativeFocusIsPlugin()) { 5278 moveSelection(scaleTrackballX(xRate, viewWidth), 5279 scaleTrackballY(yRate, viewHeight)); 5280 mTrackballRemainsX = mTrackballRemainsY = 0; 5281 return; 5282 } 5283 float ax = Math.abs(xRate); 5284 float ay = Math.abs(yRate); 5285 float maxA = Math.max(ax, ay); 5286 if (DebugFlags.WEB_VIEW) { 5287 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5288 + " xRate=" + xRate 5289 + " yRate=" + yRate 5290 + " mTrackballRemainsX=" + mTrackballRemainsX 5291 + " mTrackballRemainsY=" + mTrackballRemainsY); 5292 } 5293 int width = mContentWidth - viewWidth; 5294 int height = mContentHeight - viewHeight; 5295 if (width < 0) width = 0; 5296 if (height < 0) height = 0; 5297 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5298 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5299 maxA = Math.max(ax, ay); 5300 int count = Math.max(0, (int) maxA); 5301 int oldScrollX = mScrollX; 5302 int oldScrollY = mScrollY; 5303 if (count > 0) { 5304 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5305 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5306 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5307 KeyEvent.KEYCODE_DPAD_RIGHT; 5308 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5309 if (DebugFlags.WEB_VIEW) { 5310 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5311 + " count=" + count 5312 + " mTrackballRemainsX=" + mTrackballRemainsX 5313 + " mTrackballRemainsY=" + mTrackballRemainsY); 5314 } 5315 if (nativeFocusIsPlugin()) { 5316 for (int i = 0; i < count; i++) { 5317 letPluginHandleNavKey(selectKeyCode, time, true); 5318 } 5319 letPluginHandleNavKey(selectKeyCode, time, false); 5320 } else if (navHandledKey(selectKeyCode, count, false, time)) { 5321 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5322 } 5323 mTrackballRemainsX = mTrackballRemainsY = 0; 5324 } 5325 if (count >= TRACKBALL_SCROLL_COUNT) { 5326 int xMove = scaleTrackballX(xRate, width); 5327 int yMove = scaleTrackballY(yRate, height); 5328 if (DebugFlags.WEB_VIEW) { 5329 Log.v(LOGTAG, "doTrackball pinScrollBy" 5330 + " count=" + count 5331 + " xMove=" + xMove + " yMove=" + yMove 5332 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5333 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5334 ); 5335 } 5336 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5337 xMove = 0; 5338 } 5339 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5340 yMove = 0; 5341 } 5342 if (xMove != 0 || yMove != 0) { 5343 pinScrollBy(xMove, yMove, true, 0); 5344 } 5345 mUserScroll = true; 5346 } 5347 } 5348 5349 private int computeMaxScrollX() { 5350 return Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5351 } 5352 5353 private int computeMaxScrollY() { 5354 return Math.max(computeVerticalScrollRange() + getTitleHeight() 5355 - getViewHeightWithTitle(), getTitleHeight()); 5356 } 5357 5358 public void flingScroll(int vx, int vy) { 5359 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 5360 computeMaxScrollY(), getViewWidth() / 3, getViewHeight() / 3); 5361 invalidate(); 5362 } 5363 5364 private void doFling() { 5365 if (mVelocityTracker == null) { 5366 return; 5367 } 5368 int maxX = computeMaxScrollX(); 5369 int maxY = computeMaxScrollY(); 5370 5371 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5372 int vx = (int) mVelocityTracker.getXVelocity(); 5373 int vy = (int) mVelocityTracker.getYVelocity(); 5374 5375 if (mSnapScrollMode != SNAP_NONE) { 5376 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5377 vy = 0; 5378 } else { 5379 vx = 0; 5380 } 5381 } 5382 5383 if (true /* EMG release: make our fling more like Maps' */) { 5384 // maps cuts their velocity in half 5385 vx = vx * 3 / 4; 5386 vy = vy * 3 / 4; 5387 } 5388 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5389 WebViewCore.resumePriority(); 5390 if (mScroller.springback(mScrollX, mScrollY, 0, computeMaxScrollX(), 5391 0, computeMaxScrollY())) { 5392 invalidate(); 5393 } 5394 return; 5395 } 5396 float currentVelocity = mScroller.getCurrVelocity(); 5397 if (mLastVelocity > 0 && currentVelocity > 0) { 5398 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5399 - Math.atan2(vy, vx))); 5400 final float circle = (float) (Math.PI) * 2.0f; 5401 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5402 vx += currentVelocity * mLastVelX / mLastVelocity; 5403 vy += currentVelocity * mLastVelY / mLastVelocity; 5404 if (DebugFlags.WEB_VIEW) { 5405 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5406 } 5407 } else if (DebugFlags.WEB_VIEW) { 5408 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5409 } 5410 } else if (DebugFlags.WEB_VIEW) { 5411 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5412 + " current=" + currentVelocity 5413 + " vx=" + vx + " vy=" + vy 5414 + " maxX=" + maxX + " maxY=" + maxY 5415 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5416 } 5417 mLastVelX = vx; 5418 mLastVelY = vy; 5419 mLastVelocity = (float) Math.hypot(vx, vy); 5420 5421 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY, 5422 getViewWidth() / 3, getViewHeight() / 3); 5423 // TODO: duration is calculated based on velocity, if the range is 5424 // small, the animation will stop before duration is up. We may 5425 // want to calculate how long the animation is going to run to precisely 5426 // resume the webcore update. 5427 final int time = mScroller.getDuration(); 5428 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5429 awakenScrollBars(time); 5430 invalidate(); 5431 } 5432 5433 private boolean zoomWithPreview(float scale) { 5434 float oldScale = mActualScale; 5435 mInitialScrollX = mScrollX; 5436 mInitialScrollY = mScrollY; 5437 5438 // snap to DEFAULT_SCALE if it is close 5439 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 5440 scale = mDefaultScale; 5441 } 5442 5443 setNewZoomScale(scale, true, false); 5444 5445 if (oldScale != mActualScale) { 5446 // use mZoomPickerScale to see zoom preview first 5447 mZoomStart = SystemClock.uptimeMillis(); 5448 mInvInitialZoomScale = 1.0f / oldScale; 5449 mInvFinalZoomScale = 1.0f / mActualScale; 5450 mZoomScale = mActualScale; 5451 WebViewCore.pauseUpdatePicture(mWebViewCore); 5452 invalidate(); 5453 return true; 5454 } else { 5455 return false; 5456 } 5457 } 5458 5459 /** 5460 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5461 * in charge of installing this view to the view hierarchy. This view will 5462 * become visible when the user starts scrolling via touch and fade away if 5463 * the user does not interact with it. 5464 * <p/> 5465 * API version 3 introduces a built-in zoom mechanism that is shown 5466 * automatically by the MapView. This is the preferred approach for 5467 * showing the zoom UI. 5468 * 5469 * @deprecated The built-in zoom mechanism is preferred, see 5470 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5471 */ 5472 @Deprecated 5473 public View getZoomControls() { 5474 if (!getSettings().supportZoom()) { 5475 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5476 return null; 5477 } 5478 if (mZoomControls == null) { 5479 mZoomControls = createZoomControls(); 5480 5481 /* 5482 * need to be set to VISIBLE first so that getMeasuredHeight() in 5483 * {@link #onSizeChanged()} can return the measured value for proper 5484 * layout. 5485 */ 5486 mZoomControls.setVisibility(View.VISIBLE); 5487 mZoomControlRunnable = new Runnable() { 5488 public void run() { 5489 5490 /* Don't dismiss the controls if the user has 5491 * focus on them. Wait and check again later. 5492 */ 5493 if (!mZoomControls.hasFocus()) { 5494 mZoomControls.hide(); 5495 } else { 5496 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5497 mPrivateHandler.postDelayed(mZoomControlRunnable, 5498 ZOOM_CONTROLS_TIMEOUT); 5499 } 5500 } 5501 }; 5502 } 5503 return mZoomControls; 5504 } 5505 5506 private ExtendedZoomControls createZoomControls() { 5507 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 5508 , null); 5509 zoomControls.setOnZoomInClickListener(new OnClickListener() { 5510 public void onClick(View v) { 5511 // reset time out 5512 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5513 mPrivateHandler.postDelayed(mZoomControlRunnable, 5514 ZOOM_CONTROLS_TIMEOUT); 5515 zoomIn(); 5516 } 5517 }); 5518 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 5519 public void onClick(View v) { 5520 // reset time out 5521 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5522 mPrivateHandler.postDelayed(mZoomControlRunnable, 5523 ZOOM_CONTROLS_TIMEOUT); 5524 zoomOut(); 5525 } 5526 }); 5527 return zoomControls; 5528 } 5529 5530 /** 5531 * Gets the {@link ZoomButtonsController} which can be used to add 5532 * additional buttons to the zoom controls window. 5533 * 5534 * @return The instance of {@link ZoomButtonsController} used by this class, 5535 * or null if it is unavailable. 5536 * @hide 5537 */ 5538 public ZoomButtonsController getZoomButtonsController() { 5539 return mZoomButtonsController; 5540 } 5541 5542 /** 5543 * Perform zoom in in the webview 5544 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 5545 */ 5546 public boolean zoomIn() { 5547 // TODO: alternatively we can disallow this during draw history mode 5548 switchOutDrawHistory(); 5549 mInZoomOverview = false; 5550 // Center zooming to the center of the screen. 5551 mZoomCenterX = getViewWidth() * .5f; 5552 mZoomCenterY = getViewHeight() * .5f; 5553 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5554 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5555 return zoomWithPreview(mActualScale * 1.25f); 5556 } 5557 5558 /** 5559 * Perform zoom out in the webview 5560 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 5561 */ 5562 public boolean zoomOut() { 5563 // TODO: alternatively we can disallow this during draw history mode 5564 switchOutDrawHistory(); 5565 // Center zooming to the center of the screen. 5566 mZoomCenterX = getViewWidth() * .5f; 5567 mZoomCenterY = getViewHeight() * .5f; 5568 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5569 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5570 return zoomWithPreview(mActualScale * 0.8f); 5571 } 5572 5573 private void updateSelection() { 5574 if (mNativeClass == 0) { 5575 return; 5576 } 5577 // mLastTouchX and mLastTouchY are the point in the current viewport 5578 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5579 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5580 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 5581 contentX + mNavSlop, contentY + mNavSlop); 5582 nativeSelectBestAt(rect); 5583 } 5584 5585 /** 5586 * Scroll the focused text field/area to match the WebTextView 5587 * @param xPercent New x position of the WebTextView from 0 to 1. 5588 * @param y New y position of the WebTextView in view coordinates 5589 */ 5590 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 5591 if (!inEditingMode() || mWebViewCore == null) { 5592 return; 5593 } 5594 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 5595 // Since this position is relative to the top of the text input 5596 // field, we do not need to take the title bar's height into 5597 // consideration. 5598 viewToContentDimension(y), 5599 new Float(xPercent)); 5600 } 5601 5602 /** 5603 * Set our starting point and time for a drag from the WebTextView. 5604 */ 5605 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 5606 if (!inEditingMode()) { 5607 return; 5608 } 5609 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 5610 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 5611 mLastTouchTime = eventTime; 5612 if (!mScroller.isFinished()) { 5613 abortAnimation(); 5614 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5615 } 5616 mSnapScrollMode = SNAP_NONE; 5617 mVelocityTracker = VelocityTracker.obtain(); 5618 mTouchMode = TOUCH_DRAG_START_MODE; 5619 } 5620 5621 /** 5622 * Given a motion event from the WebTextView, set its location to our 5623 * coordinates, and handle the event. 5624 */ 5625 /*package*/ boolean textFieldDrag(MotionEvent event) { 5626 if (!inEditingMode()) { 5627 return false; 5628 } 5629 mDragFromTextInput = true; 5630 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 5631 (float) (mWebTextView.getTop() - mScrollY)); 5632 boolean result = onTouchEvent(event); 5633 mDragFromTextInput = false; 5634 return result; 5635 } 5636 5637 /** 5638 * Due a touch up from a WebTextView. This will be handled by webkit to 5639 * change the selection. 5640 * @param event MotionEvent in the WebTextView's coordinates. 5641 */ 5642 /*package*/ void touchUpOnTextField(MotionEvent event) { 5643 if (!inEditingMode()) { 5644 return; 5645 } 5646 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 5647 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 5648 nativeMotionUp(x, y, mNavSlop); 5649 } 5650 5651 /** 5652 * Called when pressing the center key or trackball on a textfield. 5653 */ 5654 /*package*/ void centerKeyPressOnTextField() { 5655 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 5656 nativeCursorNodePointer()); 5657 } 5658 5659 private void doShortPress() { 5660 if (mNativeClass == 0) { 5661 return; 5662 } 5663 if (mPreventDefault == PREVENT_DEFAULT_YES) { 5664 return; 5665 } 5666 mTouchMode = TOUCH_DONE_MODE; 5667 switchOutDrawHistory(); 5668 // mLastTouchX and mLastTouchY are the point in the current viewport 5669 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5670 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5671 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 5672 WebViewCore.MotionUpData motionUpData = new WebViewCore 5673 .MotionUpData(); 5674 motionUpData.mFrame = nativeCacheHitFramePointer(); 5675 motionUpData.mNode = nativeCacheHitNodePointer(); 5676 motionUpData.mBounds = nativeCacheHitNodeBounds(); 5677 motionUpData.mX = contentX; 5678 motionUpData.mY = contentY; 5679 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 5680 motionUpData); 5681 } else { 5682 doMotionUp(contentX, contentY); 5683 } 5684 } 5685 5686 private void doMotionUp(int contentX, int contentY) { 5687 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 5688 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 5689 } 5690 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 5691 playSoundEffect(SoundEffectConstants.CLICK); 5692 } 5693 } 5694 5695 // Rule for double tap: 5696 // 1. if the current scale is not same as the text wrap scale and layout 5697 // algorithm is NARROW_COLUMNS, fit to column; 5698 // 2. if the current state is not overview mode, change to overview mode; 5699 // 3. if the current state is overview mode, change to default scale. 5700 private void doDoubleTap() { 5701 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 5702 return; 5703 } 5704 mZoomCenterX = mLastTouchX; 5705 mZoomCenterY = mLastTouchY; 5706 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5707 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5708 WebSettings settings = getSettings(); 5709 // remove the zoom control after double tap 5710 if (settings.getBuiltInZoomControls()) { 5711 if (mZoomButtonsController.isVisible()) { 5712 mZoomButtonsController.setVisible(false); 5713 } 5714 } else { 5715 if (mZoomControlRunnable != null) { 5716 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5717 } 5718 if (mZoomControls != null) { 5719 mZoomControls.hide(); 5720 } 5721 } 5722 settings.setDoubleTapToastCount(0); 5723 boolean zoomToDefault = false; 5724 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 5725 && (Math.abs(mActualScale - mTextWrapScale) >= 0.01f)) { 5726 setNewZoomScale(mActualScale, true, true); 5727 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 5728 if (Math.abs(mActualScale - overviewScale) < 0.01f) { 5729 mInZoomOverview = true; 5730 } 5731 } else if (!mInZoomOverview) { 5732 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 5733 if (Math.abs(mActualScale - newScale) >= 0.01f) { 5734 mInZoomOverview = true; 5735 // Force the titlebar fully reveal in overview mode 5736 if (mScrollY < getTitleHeight()) mScrollY = 0; 5737 zoomWithPreview(newScale); 5738 } else if (Math.abs(mActualScale - mDefaultScale) >= 0.01f) { 5739 zoomToDefault = true; 5740 } 5741 } else { 5742 zoomToDefault = true; 5743 } 5744 if (zoomToDefault) { 5745 mInZoomOverview = false; 5746 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 5747 if (left != NO_LEFTEDGE) { 5748 // add a 5pt padding to the left edge. 5749 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 5750 - mScrollX; 5751 // Re-calculate the zoom center so that the new scroll x will be 5752 // on the left edge. 5753 if (viewLeft > 0) { 5754 mZoomCenterX = viewLeft * mDefaultScale 5755 / (mDefaultScale - mActualScale); 5756 } else { 5757 scrollBy(viewLeft, 0); 5758 mZoomCenterX = 0; 5759 } 5760 } 5761 zoomWithPreview(mDefaultScale); 5762 } 5763 } 5764 5765 // Called by JNI to handle a touch on a node representing an email address, 5766 // address, or phone number 5767 private void overrideLoading(String url) { 5768 mCallbackProxy.uiOverrideUrlLoading(url); 5769 } 5770 5771 @Override 5772 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 5773 boolean result = false; 5774 if (inEditingMode()) { 5775 result = mWebTextView.requestFocus(direction, 5776 previouslyFocusedRect); 5777 } else { 5778 result = super.requestFocus(direction, previouslyFocusedRect); 5779 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 5780 // For cases such as GMail, where we gain focus from a direction, 5781 // we want to move to the first available link. 5782 // FIXME: If there are no visible links, we may not want to 5783 int fakeKeyDirection = 0; 5784 switch(direction) { 5785 case View.FOCUS_UP: 5786 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 5787 break; 5788 case View.FOCUS_DOWN: 5789 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 5790 break; 5791 case View.FOCUS_LEFT: 5792 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 5793 break; 5794 case View.FOCUS_RIGHT: 5795 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 5796 break; 5797 default: 5798 return result; 5799 } 5800 if (mNativeClass != 0 && !nativeHasCursorNode()) { 5801 navHandledKey(fakeKeyDirection, 1, true, 0); 5802 } 5803 } 5804 } 5805 return result; 5806 } 5807 5808 @Override 5809 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5810 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 5811 5812 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5813 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5814 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5815 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5816 5817 int measuredHeight = heightSize; 5818 int measuredWidth = widthSize; 5819 5820 // Grab the content size from WebViewCore. 5821 int contentHeight = contentToViewDimension(mContentHeight); 5822 int contentWidth = contentToViewDimension(mContentWidth); 5823 5824// Log.d(LOGTAG, "------- measure " + heightMode); 5825 5826 if (heightMode != MeasureSpec.EXACTLY) { 5827 mHeightCanMeasure = true; 5828 measuredHeight = contentHeight; 5829 if (heightMode == MeasureSpec.AT_MOST) { 5830 // If we are larger than the AT_MOST height, then our height can 5831 // no longer be measured and we should scroll internally. 5832 if (measuredHeight > heightSize) { 5833 measuredHeight = heightSize; 5834 mHeightCanMeasure = false; 5835 } 5836 } 5837 } else { 5838 mHeightCanMeasure = false; 5839 } 5840 if (mNativeClass != 0) { 5841 nativeSetHeightCanMeasure(mHeightCanMeasure); 5842 } 5843 // For the width, always use the given size unless unspecified. 5844 if (widthMode == MeasureSpec.UNSPECIFIED) { 5845 mWidthCanMeasure = true; 5846 measuredWidth = contentWidth; 5847 } else { 5848 mWidthCanMeasure = false; 5849 } 5850 5851 synchronized (this) { 5852 setMeasuredDimension(measuredWidth, measuredHeight); 5853 } 5854 } 5855 5856 @Override 5857 public boolean requestChildRectangleOnScreen(View child, 5858 Rect rect, 5859 boolean immediate) { 5860 rect.offset(child.getLeft() - child.getScrollX(), 5861 child.getTop() - child.getScrollY()); 5862 5863 Rect content = new Rect(viewToContentX(mScrollX), 5864 viewToContentY(mScrollY), 5865 viewToContentX(mScrollX + getWidth() 5866 - getVerticalScrollbarWidth()), 5867 viewToContentY(mScrollY + getViewHeightWithTitle())); 5868 content = nativeSubtractLayers(content); 5869 int screenTop = contentToViewY(content.top); 5870 int screenBottom = contentToViewY(content.bottom); 5871 int height = screenBottom - screenTop; 5872 int scrollYDelta = 0; 5873 5874 if (rect.bottom > screenBottom) { 5875 int oneThirdOfScreenHeight = height / 3; 5876 if (rect.height() > 2 * oneThirdOfScreenHeight) { 5877 // If the rectangle is too tall to fit in the bottom two thirds 5878 // of the screen, place it at the top. 5879 scrollYDelta = rect.top - screenTop; 5880 } else { 5881 // If the rectangle will still fit on screen, we want its 5882 // top to be in the top third of the screen. 5883 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 5884 } 5885 } else if (rect.top < screenTop) { 5886 scrollYDelta = rect.top - screenTop; 5887 } 5888 5889 int screenLeft = contentToViewX(content.left); 5890 int screenRight = contentToViewX(content.right); 5891 int width = screenRight - screenLeft; 5892 int scrollXDelta = 0; 5893 5894 if (rect.right > screenRight && rect.left > screenLeft) { 5895 if (rect.width() > width) { 5896 scrollXDelta += (rect.left - screenLeft); 5897 } else { 5898 scrollXDelta += (rect.right - screenRight); 5899 } 5900 } else if (rect.left < screenLeft) { 5901 scrollXDelta -= (screenLeft - rect.left); 5902 } 5903 5904 if ((scrollYDelta | scrollXDelta) != 0) { 5905 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 5906 } 5907 5908 return false; 5909 } 5910 5911 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 5912 String replace, int newStart, int newEnd) { 5913 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 5914 arg.mReplace = replace; 5915 arg.mNewStart = newStart; 5916 arg.mNewEnd = newEnd; 5917 mTextGeneration++; 5918 arg.mTextGeneration = mTextGeneration; 5919 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 5920 } 5921 5922 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 5923 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 5924 arg.mEvent = event; 5925 arg.mCurrentText = currentText; 5926 // Increase our text generation number, and pass it to webcore thread 5927 mTextGeneration++; 5928 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 5929 // WebKit's document state is not saved until about to leave the page. 5930 // To make sure the host application, like Browser, has the up to date 5931 // document state when it goes to background, we force to save the 5932 // document state. 5933 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 5934 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 5935 cursorData(), 1000); 5936 } 5937 5938 /* package */ synchronized WebViewCore getWebViewCore() { 5939 return mWebViewCore; 5940 } 5941 5942 //------------------------------------------------------------------------- 5943 // Methods can be called from a separate thread, like WebViewCore 5944 // If it needs to call the View system, it has to send message. 5945 //------------------------------------------------------------------------- 5946 5947 /** 5948 * General handler to receive message coming from webkit thread 5949 */ 5950 class PrivateHandler extends Handler { 5951 @Override 5952 public void handleMessage(Message msg) { 5953 // exclude INVAL_RECT_MSG_ID since it is frequently output 5954 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 5955 if (msg.what >= FIRST_PRIVATE_MSG_ID 5956 && msg.what <= LAST_PRIVATE_MSG_ID) { 5957 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 5958 - FIRST_PRIVATE_MSG_ID]); 5959 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 5960 && msg.what <= LAST_PACKAGE_MSG_ID) { 5961 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 5962 - FIRST_PACKAGE_MSG_ID]); 5963 } else { 5964 Log.v(LOGTAG, Integer.toString(msg.what)); 5965 } 5966 } 5967 if (mWebViewCore == null) { 5968 // after WebView's destroy() is called, skip handling messages. 5969 return; 5970 } 5971 switch (msg.what) { 5972 case REMEMBER_PASSWORD: { 5973 mDatabase.setUsernamePassword( 5974 msg.getData().getString("host"), 5975 msg.getData().getString("username"), 5976 msg.getData().getString("password")); 5977 ((Message) msg.obj).sendToTarget(); 5978 break; 5979 } 5980 case NEVER_REMEMBER_PASSWORD: { 5981 mDatabase.setUsernamePassword( 5982 msg.getData().getString("host"), null, null); 5983 ((Message) msg.obj).sendToTarget(); 5984 break; 5985 } 5986 case PREVENT_DEFAULT_TIMEOUT: { 5987 // if timeout happens, cancel it so that it won't block UI 5988 // to continue handling touch events 5989 if ((msg.arg1 == MotionEvent.ACTION_DOWN 5990 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 5991 || (msg.arg1 == MotionEvent.ACTION_MOVE 5992 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 5993 cancelWebCoreTouchEvent( 5994 viewToContentX((int) mLastTouchX + mScrollX), 5995 viewToContentY((int) mLastTouchY + mScrollY), 5996 true); 5997 } 5998 break; 5999 } 6000 case SWITCH_TO_SHORTPRESS: { 6001 if (mTouchMode == TOUCH_INIT_MODE) { 6002 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6003 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6004 updateSelection(); 6005 } else { 6006 // set to TOUCH_SHORTPRESS_MODE so that it won't 6007 // trigger double tap any more 6008 mTouchMode = TOUCH_SHORTPRESS_MODE; 6009 } 6010 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6011 mTouchMode = TOUCH_DONE_MODE; 6012 } 6013 break; 6014 } 6015 case SWITCH_TO_LONGPRESS: { 6016 if (inFullScreenMode() || mDeferTouchProcess) { 6017 TouchEventData ted = new TouchEventData(); 6018 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6019 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 6020 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 6021 // metaState for long press is tricky. Should it be the 6022 // state when the press started or when the press was 6023 // released? Or some intermediary key state? For 6024 // simplicity for now, we don't set it. 6025 ted.mMetaState = 0; 6026 ted.mReprocess = mDeferTouchProcess; 6027 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6028 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6029 mTouchMode = TOUCH_DONE_MODE; 6030 performLongClick(); 6031 rebuildWebTextView(); 6032 } 6033 break; 6034 } 6035 case RELEASE_SINGLE_TAP: { 6036 doShortPress(); 6037 break; 6038 } 6039 case SCROLL_BY_MSG_ID: 6040 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6041 break; 6042 case SYNC_SCROLL_TO_MSG_ID: 6043 if (mUserScroll) { 6044 // if user has scrolled explicitly, don't sync the 6045 // scroll position any more 6046 mUserScroll = false; 6047 break; 6048 } 6049 // fall through 6050 case SCROLL_TO_MSG_ID: 6051 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6052 // if we can't scroll to the exact position due to pin, 6053 // send a message to WebCore to re-scroll when we get a 6054 // new picture 6055 mUserScroll = false; 6056 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6057 msg.arg1, msg.arg2); 6058 } 6059 break; 6060 case SPAWN_SCROLL_TO_MSG_ID: 6061 spawnContentScrollTo(msg.arg1, msg.arg2); 6062 break; 6063 case UPDATE_ZOOM_RANGE: { 6064 WebViewCore.RestoreState restoreState 6065 = (WebViewCore.RestoreState) msg.obj; 6066 // mScrollX contains the new minPrefWidth 6067 updateZoomRange(restoreState, getViewWidth(), 6068 restoreState.mScrollX, false); 6069 break; 6070 } 6071 case NEW_PICTURE_MSG_ID: { 6072 WebSettings settings = mWebViewCore.getSettings(); 6073 // called for new content 6074 final int viewWidth = getViewWidth(); 6075 final WebViewCore.DrawData draw = 6076 (WebViewCore.DrawData) msg.obj; 6077 final Point viewSize = draw.mViewPoint; 6078 boolean useWideViewport = settings.getUseWideViewPort(); 6079 WebViewCore.RestoreState restoreState = draw.mRestoreState; 6080 boolean hasRestoreState = restoreState != null; 6081 if (hasRestoreState) { 6082 updateZoomRange(restoreState, viewSize.x, 6083 draw.mMinPrefWidth, true); 6084 if (!mDrawHistory) { 6085 mInZoomOverview = false; 6086 6087 if (mInitialScaleInPercent > 0) { 6088 setNewZoomScale(mInitialScaleInPercent / 100.0f, 6089 mInitialScaleInPercent != mTextWrapScale * 100, 6090 false); 6091 } else if (restoreState.mViewScale > 0) { 6092 mTextWrapScale = restoreState.mTextWrapScale; 6093 setNewZoomScale(restoreState.mViewScale, false, 6094 false); 6095 } else { 6096 mInZoomOverview = useWideViewport 6097 && settings.getLoadWithOverviewMode(); 6098 float scale; 6099 if (mInZoomOverview) { 6100 scale = (float) viewWidth 6101 / DEFAULT_VIEWPORT_WIDTH; 6102 } else { 6103 scale = restoreState.mTextWrapScale; 6104 } 6105 setNewZoomScale(scale, Math.abs(scale 6106 - mTextWrapScale) >= 0.01f, false); 6107 } 6108 setContentScrollTo(restoreState.mScrollX, 6109 restoreState.mScrollY); 6110 // As we are on a new page, remove the WebTextView. This 6111 // is necessary for page loads driven by webkit, and in 6112 // particular when the user was on a password field, so 6113 // the WebTextView was visible. 6114 clearTextEntry(false); 6115 // update the zoom buttons as the scale can be changed 6116 if (getSettings().getBuiltInZoomControls()) { 6117 updateZoomButtonsEnabled(); 6118 } 6119 } 6120 } 6121 // We update the layout (i.e. request a layout from the 6122 // view system) if the last view size that we sent to 6123 // WebCore matches the view size of the picture we just 6124 // received in the fixed dimension. 6125 final boolean updateLayout = viewSize.x == mLastWidthSent 6126 && viewSize.y == mLastHeightSent; 6127 recordNewContentSize(draw.mWidthHeight.x, 6128 draw.mWidthHeight.y 6129 + (mFindIsUp ? mFindHeight : 0), updateLayout); 6130 if (DebugFlags.WEB_VIEW) { 6131 Rect b = draw.mInvalRegion.getBounds(); 6132 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6133 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6134 } 6135 invalidateContentRect(draw.mInvalRegion.getBounds()); 6136 if (mPictureListener != null) { 6137 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6138 } 6139 if (useWideViewport) { 6140 // limit mZoomOverviewWidth upper bound to 6141 // sMaxViewportWidth so that if the page doesn't behave 6142 // well, the WebView won't go insane. limit the lower 6143 // bound to match the default scale for mobile sites. 6144 mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math 6145 .max((int) (viewWidth / mDefaultScale), Math 6146 .max(draw.mMinPrefWidth, 6147 draw.mViewPoint.x))); 6148 } 6149 if (!mMinZoomScaleFixed) { 6150 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 6151 } 6152 if (!mDrawHistory && mInZoomOverview) { 6153 // fit the content width to the current view. Ignore 6154 // the rounding error case. 6155 if (Math.abs((viewWidth * mInvActualScale) 6156 - mZoomOverviewWidth) > 1) { 6157 setNewZoomScale((float) viewWidth 6158 / mZoomOverviewWidth, Math.abs(mActualScale 6159 - mTextWrapScale) < 0.01f, false); 6160 } 6161 } 6162 if (draw.mFocusSizeChanged && inEditingMode()) { 6163 mFocusSizeChanged = true; 6164 } 6165 if (hasRestoreState) { 6166 mViewManager.postReadyToDrawAll(); 6167 } 6168 break; 6169 } 6170 case WEBCORE_INITIALIZED_MSG_ID: 6171 // nativeCreate sets mNativeClass to a non-zero value 6172 nativeCreate(msg.arg1); 6173 break; 6174 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6175 // Make sure that the textfield is currently focused 6176 // and representing the same node as the pointer. 6177 if (inEditingMode() && 6178 mWebTextView.isSameTextField(msg.arg1)) { 6179 if (msg.getData().getBoolean("password")) { 6180 Spannable text = (Spannable) mWebTextView.getText(); 6181 int start = Selection.getSelectionStart(text); 6182 int end = Selection.getSelectionEnd(text); 6183 mWebTextView.setInPassword(true); 6184 // Restore the selection, which may have been 6185 // ruined by setInPassword. 6186 Spannable pword = 6187 (Spannable) mWebTextView.getText(); 6188 Selection.setSelection(pword, start, end); 6189 // If the text entry has created more events, ignore 6190 // this one. 6191 } else if (msg.arg2 == mTextGeneration) { 6192 mWebTextView.setTextAndKeepSelection( 6193 (String) msg.obj); 6194 } 6195 } 6196 break; 6197 case UPDATE_TEXT_SELECTION_MSG_ID: 6198 // If no textfield was in focus, and the user touched one, 6199 // causing it to send this message, then WebTextView has not 6200 // been set up yet. Rebuild it so it can set its selection. 6201 rebuildWebTextView(); 6202 if (inEditingMode() 6203 && mWebTextView.isSameTextField(msg.arg1) 6204 && msg.arg2 == mTextGeneration) { 6205 WebViewCore.TextSelectionData tData 6206 = (WebViewCore.TextSelectionData) msg.obj; 6207 mWebTextView.setSelectionFromWebKit(tData.mStart, 6208 tData.mEnd); 6209 } 6210 break; 6211 case RETURN_LABEL: 6212 if (inEditingMode() 6213 && mWebTextView.isSameTextField(msg.arg1)) { 6214 mWebTextView.setHint((String) msg.obj); 6215 InputMethodManager imm 6216 = InputMethodManager.peekInstance(); 6217 // The hint is propagated to the IME in 6218 // onCreateInputConnection. If the IME is already 6219 // active, restart it so that its hint text is updated. 6220 if (imm != null && imm.isActive(mWebTextView)) { 6221 imm.restartInput(mWebTextView); 6222 } 6223 } 6224 break; 6225 case MOVE_OUT_OF_PLUGIN: 6226 navHandledKey(msg.arg1, 1, false, 0); 6227 break; 6228 case UPDATE_TEXT_ENTRY_MSG_ID: 6229 // this is sent after finishing resize in WebViewCore. Make 6230 // sure the text edit box is still on the screen. 6231 if (inEditingMode() && nativeCursorIsTextInput()) { 6232 mWebTextView.bringIntoView(); 6233 rebuildWebTextView(); 6234 } 6235 break; 6236 case CLEAR_TEXT_ENTRY: 6237 clearTextEntry(false); 6238 break; 6239 case INVAL_RECT_MSG_ID: { 6240 Rect r = (Rect)msg.obj; 6241 if (r == null) { 6242 invalidate(); 6243 } else { 6244 // we need to scale r from content into view coords, 6245 // which viewInvalidate() does for us 6246 viewInvalidate(r.left, r.top, r.right, r.bottom); 6247 } 6248 break; 6249 } 6250 case IMMEDIATE_REPAINT_MSG_ID: { 6251 invalidate(); 6252 break; 6253 } 6254 case SET_ROOT_LAYER_MSG_ID: { 6255 nativeSetRootLayer(msg.arg1); 6256 invalidate(); 6257 break; 6258 } 6259 case REQUEST_FORM_DATA: 6260 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6261 if (mWebTextView.isSameTextField(msg.arg1)) { 6262 mWebTextView.setAdapterCustom(adapter); 6263 } 6264 break; 6265 case RESUME_WEBCORE_PRIORITY: 6266 WebViewCore.resumePriority(); 6267 break; 6268 6269 case LONG_PRESS_CENTER: 6270 // as this is shared by keydown and trackballdown, reset all 6271 // the states 6272 mGotCenterDown = false; 6273 mTrackballDown = false; 6274 performLongClick(); 6275 break; 6276 6277 case WEBCORE_NEED_TOUCH_EVENTS: 6278 mForwardTouchEvents = (msg.arg1 != 0); 6279 break; 6280 6281 case PREVENT_TOUCH_ID: 6282 if (inFullScreenMode()) { 6283 break; 6284 } 6285 if (msg.obj == null) { 6286 if (msg.arg1 == MotionEvent.ACTION_DOWN 6287 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 6288 // if prevent default is called from WebCore, UI 6289 // will not handle the rest of the touch events any 6290 // more. 6291 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6292 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 6293 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 6294 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6295 // the return for the first ACTION_MOVE will decide 6296 // whether UI will handle touch or not. Currently no 6297 // support for alternating prevent default 6298 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6299 : PREVENT_DEFAULT_NO; 6300 } 6301 } else if (msg.arg2 == 0) { 6302 // prevent default is not called in WebCore, so the 6303 // message needs to be reprocessed in UI 6304 TouchEventData ted = (TouchEventData) msg.obj; 6305 switch (ted.mAction) { 6306 case MotionEvent.ACTION_DOWN: 6307 mLastDeferTouchX = contentToViewX(ted.mX) 6308 - mScrollX; 6309 mLastDeferTouchY = contentToViewY(ted.mY) 6310 - mScrollY; 6311 mDeferTouchMode = TOUCH_INIT_MODE; 6312 break; 6313 case MotionEvent.ACTION_MOVE: { 6314 // no snapping in defer process 6315 int x = contentToViewX(ted.mX) - mScrollX; 6316 int y = contentToViewY(ted.mY) - mScrollY; 6317 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 6318 mDeferTouchMode = TOUCH_DRAG_MODE; 6319 mLastDeferTouchX = x; 6320 mLastDeferTouchY = y; 6321 startDrag(); 6322 } 6323 doDrag((int) (mLastDeferTouchX - x), 6324 (int) (mLastDeferTouchY - y)); 6325 mLastDeferTouchX = x; 6326 mLastDeferTouchY = y; 6327 break; 6328 } 6329 case MotionEvent.ACTION_UP: 6330 case MotionEvent.ACTION_CANCEL: 6331 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 6332 // no fling in defer process 6333 mScroller.springback(mScrollX, mScrollY, 0, 6334 computeMaxScrollX(), 0, 6335 computeMaxScrollY()); 6336 invalidate(); 6337 WebViewCore.resumePriority(); 6338 } 6339 mDeferTouchMode = TOUCH_DONE_MODE; 6340 break; 6341 case WebViewCore.ACTION_DOUBLETAP: 6342 // doDoubleTap() needs mLastTouchX/Y as anchor 6343 mLastTouchX = contentToViewX(ted.mX) - mScrollX; 6344 mLastTouchY = contentToViewY(ted.mY) - mScrollY; 6345 doDoubleTap(); 6346 mDeferTouchMode = TOUCH_DONE_MODE; 6347 break; 6348 case WebViewCore.ACTION_LONGPRESS: 6349 HitTestResult hitTest = getHitTestResult(); 6350 if (hitTest != null && hitTest.mType 6351 != HitTestResult.UNKNOWN_TYPE) { 6352 performLongClick(); 6353 rebuildWebTextView(); 6354 } 6355 mDeferTouchMode = TOUCH_DONE_MODE; 6356 break; 6357 } 6358 } 6359 break; 6360 6361 case REQUEST_KEYBOARD: 6362 if (msg.arg1 == 0) { 6363 hideSoftKeyboard(); 6364 } else { 6365 displaySoftKeyboard(1 == msg.arg2); 6366 } 6367 break; 6368 6369 case FIND_AGAIN: 6370 // Ignore if find has been dismissed. 6371 if (mFindIsUp) { 6372 findAll(mLastFind); 6373 } 6374 break; 6375 6376 case DRAG_HELD_MOTIONLESS: 6377 mHeldMotionless = MOTIONLESS_TRUE; 6378 invalidate(); 6379 // fall through to keep scrollbars awake 6380 6381 case AWAKEN_SCROLL_BARS: 6382 if (mTouchMode == TOUCH_DRAG_MODE 6383 && mHeldMotionless == MOTIONLESS_TRUE) { 6384 awakenScrollBars(ViewConfiguration 6385 .getScrollDefaultDelay(), false); 6386 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6387 .obtainMessage(AWAKEN_SCROLL_BARS), 6388 ViewConfiguration.getScrollDefaultDelay()); 6389 } 6390 break; 6391 6392 case DO_MOTION_UP: 6393 doMotionUp(msg.arg1, msg.arg2); 6394 break; 6395 6396 case SHOW_FULLSCREEN: { 6397 WebViewCore.PluginFullScreenData data 6398 = (WebViewCore.PluginFullScreenData) msg.obj; 6399 if (data.mNpp != 0 && data.mView != null) { 6400 if (inFullScreenMode()) { 6401 Log.w(LOGTAG, 6402 "Should not have another full screen."); 6403 mFullScreenHolder.dismiss(); 6404 } 6405 mFullScreenHolder = new PluginFullScreenHolder( 6406 WebView.this, data.mNpp); 6407 // as we are sharing the View between full screen and 6408 // embedded mode, we have to remove the 6409 // AbsoluteLayout.LayoutParams set by embedded mode to 6410 // ViewGroup.LayoutParams before adding it to the dialog 6411 data.mView.setLayoutParams(new ViewGroup.LayoutParams( 6412 ViewGroup.LayoutParams.FILL_PARENT, 6413 ViewGroup.LayoutParams.FILL_PARENT)); 6414 mFullScreenHolder.setContentView(data.mView); 6415 mFullScreenHolder.setCancelable(false); 6416 mFullScreenHolder.setCanceledOnTouchOutside(false); 6417 mFullScreenHolder.show(); 6418 } else if (!inFullScreenMode()) { 6419 // this may happen if user dismisses the fullscreen and 6420 // then the WebCore re-position message finally reached 6421 // the UI thread. 6422 break; 6423 } 6424 // move the matching embedded view fully into the view so 6425 // that touch will be valid instead of rejected due to out 6426 // of the visible bounds 6427 // TODO: do we need to preserve the original position and 6428 // scale so that we can revert it when leaving the full 6429 // screen mode? 6430 int x = contentToViewX(data.mDocX); 6431 int y = contentToViewY(data.mDocY); 6432 int width = contentToViewDimension(data.mDocWidth); 6433 int height = contentToViewDimension(data.mDocHeight); 6434 int viewWidth = getViewWidth(); 6435 int viewHeight = getViewHeight(); 6436 int newX = mScrollX; 6437 int newY = mScrollY; 6438 if (x < mScrollX) { 6439 newX = x + (width > viewWidth 6440 ? (width - viewWidth) / 2 : 0); 6441 } else if (x + width > mScrollX + viewWidth) { 6442 newX = x + width - viewWidth - (width > viewWidth 6443 ? (width - viewWidth) / 2 : 0); 6444 } 6445 if (y < mScrollY) { 6446 newY = y + (height > viewHeight 6447 ? (height - viewHeight) / 2 : 0); 6448 } else if (y + height > mScrollY + viewHeight) { 6449 newY = y + height - viewHeight - (height > viewHeight 6450 ? (height - viewHeight) / 2 : 0); 6451 } 6452 scrollTo(newX, newY); 6453 if (width > viewWidth || height > viewHeight) { 6454 mZoomCenterX = viewWidth * .5f; 6455 mZoomCenterY = viewHeight * .5f; 6456 // do not change text wrap scale so that there is no 6457 // reflow 6458 setNewZoomScale(mActualScale 6459 / Math.max((float) width / viewWidth, 6460 (float) height / viewHeight), false, 6461 false); 6462 } 6463 // Now update the bound 6464 mFullScreenHolder.updateBound(contentToViewX(data.mDocX) 6465 - mScrollX, contentToViewY(data.mDocY) - mScrollY, 6466 contentToViewDimension(data.mDocWidth), 6467 contentToViewDimension(data.mDocHeight)); 6468 } 6469 break; 6470 6471 case HIDE_FULLSCREEN: 6472 if (inFullScreenMode()) { 6473 mFullScreenHolder.dismiss(); 6474 mFullScreenHolder = null; 6475 } 6476 break; 6477 6478 case DOM_FOCUS_CHANGED: 6479 if (inEditingMode()) { 6480 nativeClearCursor(); 6481 rebuildWebTextView(); 6482 } 6483 break; 6484 6485 case SHOW_RECT_MSG_ID: { 6486 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6487 int x = mScrollX; 6488 int left = contentToViewX(data.mLeft); 6489 int width = contentToViewDimension(data.mWidth); 6490 int maxWidth = contentToViewDimension(data.mContentWidth); 6491 int viewWidth = getViewWidth(); 6492 if (width < viewWidth) { 6493 // center align 6494 x += left + width / 2 - mScrollX - viewWidth / 2; 6495 } else { 6496 x += (int) (left + data.mXPercentInDoc * width 6497 - mScrollX - data.mXPercentInView * viewWidth); 6498 } 6499 if (DebugFlags.WEB_VIEW) { 6500 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6501 width + ",maxWidth=" + maxWidth + 6502 ",viewWidth=" + viewWidth + ",x=" 6503 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6504 ",xPercentInView=" + data.mXPercentInView+ ")"); 6505 } 6506 // use the passing content width to cap x as the current 6507 // mContentWidth may not be updated yet 6508 x = Math.max(0, 6509 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6510 int top = contentToViewY(data.mTop); 6511 int height = contentToViewDimension(data.mHeight); 6512 int maxHeight = contentToViewDimension(data.mContentHeight); 6513 int viewHeight = getViewHeight(); 6514 int y = (int) (top + data.mYPercentInDoc * height - 6515 data.mYPercentInView * viewHeight); 6516 if (DebugFlags.WEB_VIEW) { 6517 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6518 height + ",maxHeight=" + maxHeight + 6519 ",viewHeight=" + viewHeight + ",y=" 6520 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6521 ",yPercentInView=" + data.mYPercentInView+ ")"); 6522 } 6523 // use the passing content height to cap y as the current 6524 // mContentHeight may not be updated yet 6525 y = Math.max(0, 6526 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6527 // We need to take into account the visible title height 6528 // when scrolling since y is an absolute view position. 6529 y = Math.max(0, y - getVisibleTitleHeight()); 6530 scrollTo(x, y); 6531 } 6532 break; 6533 6534 default: 6535 super.handleMessage(msg); 6536 break; 6537 } 6538 } 6539 } 6540 6541 // Class used to use a dropdown for a <select> element 6542 private class InvokeListBox implements Runnable { 6543 // Whether the listbox allows multiple selection. 6544 private boolean mMultiple; 6545 // Passed in to a list with multiple selection to tell 6546 // which items are selected. 6547 private int[] mSelectedArray; 6548 // Passed in to a list with single selection to tell 6549 // where the initial selection is. 6550 private int mSelection; 6551 6552 private Container[] mContainers; 6553 6554 // Need these to provide stable ids to my ArrayAdapter, 6555 // which normally does not have stable ids. (Bug 1250098) 6556 private class Container extends Object { 6557 /** 6558 * Possible values for mEnabled. Keep in sync with OptionStatus in 6559 * WebViewCore.cpp 6560 */ 6561 final static int OPTGROUP = -1; 6562 final static int OPTION_DISABLED = 0; 6563 final static int OPTION_ENABLED = 1; 6564 6565 String mString; 6566 int mEnabled; 6567 int mId; 6568 6569 public String toString() { 6570 return mString; 6571 } 6572 } 6573 6574 /** 6575 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6576 * and allow filtering. 6577 */ 6578 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6579 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6580 super(context, 6581 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6582 com.android.internal.R.layout.select_dialog_singlechoice, 6583 objects); 6584 } 6585 6586 @Override 6587 public View getView(int position, View convertView, 6588 ViewGroup parent) { 6589 // Always pass in null so that we will get a new CheckedTextView 6590 // Otherwise, an item which was previously used as an <optgroup> 6591 // element (i.e. has no check), could get used as an <option> 6592 // element, which needs a checkbox/radio, but it would not have 6593 // one. 6594 convertView = super.getView(position, null, parent); 6595 Container c = item(position); 6596 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6597 // ListView does not draw dividers between disabled and 6598 // enabled elements. Use a LinearLayout to provide dividers 6599 LinearLayout layout = new LinearLayout(mContext); 6600 layout.setOrientation(LinearLayout.VERTICAL); 6601 if (position > 0) { 6602 View dividerTop = new View(mContext); 6603 dividerTop.setBackgroundResource( 6604 android.R.drawable.divider_horizontal_bright); 6605 layout.addView(dividerTop); 6606 } 6607 6608 if (Container.OPTGROUP == c.mEnabled) { 6609 // Currently select_dialog_multichoice and 6610 // select_dialog_singlechoice are CheckedTextViews. If 6611 // that changes, the class cast will no longer be valid. 6612 Assert.assertTrue( 6613 convertView instanceof CheckedTextView); 6614 ((CheckedTextView) convertView).setCheckMarkDrawable( 6615 null); 6616 } else { 6617 // c.mEnabled == Container.OPTION_DISABLED 6618 // Draw the disabled element in a disabled state. 6619 convertView.setEnabled(false); 6620 } 6621 6622 layout.addView(convertView); 6623 if (position < getCount() - 1) { 6624 View dividerBottom = new View(mContext); 6625 dividerBottom.setBackgroundResource( 6626 android.R.drawable.divider_horizontal_bright); 6627 layout.addView(dividerBottom); 6628 } 6629 return layout; 6630 } 6631 return convertView; 6632 } 6633 6634 @Override 6635 public boolean hasStableIds() { 6636 // AdapterView's onChanged method uses this to determine whether 6637 // to restore the old state. Return false so that the old (out 6638 // of date) state does not replace the new, valid state. 6639 return false; 6640 } 6641 6642 private Container item(int position) { 6643 if (position < 0 || position >= getCount()) { 6644 return null; 6645 } 6646 return (Container) getItem(position); 6647 } 6648 6649 @Override 6650 public long getItemId(int position) { 6651 Container item = item(position); 6652 if (item == null) { 6653 return -1; 6654 } 6655 return item.mId; 6656 } 6657 6658 @Override 6659 public boolean areAllItemsEnabled() { 6660 return false; 6661 } 6662 6663 @Override 6664 public boolean isEnabled(int position) { 6665 Container item = item(position); 6666 if (item == null) { 6667 return false; 6668 } 6669 return Container.OPTION_ENABLED == item.mEnabled; 6670 } 6671 } 6672 6673 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 6674 mMultiple = true; 6675 mSelectedArray = selected; 6676 6677 int length = array.length; 6678 mContainers = new Container[length]; 6679 for (int i = 0; i < length; i++) { 6680 mContainers[i] = new Container(); 6681 mContainers[i].mString = array[i]; 6682 mContainers[i].mEnabled = enabled[i]; 6683 mContainers[i].mId = i; 6684 } 6685 } 6686 6687 private InvokeListBox(String[] array, int[] enabled, int selection) { 6688 mSelection = selection; 6689 mMultiple = false; 6690 6691 int length = array.length; 6692 mContainers = new Container[length]; 6693 for (int i = 0; i < length; i++) { 6694 mContainers[i] = new Container(); 6695 mContainers[i].mString = array[i]; 6696 mContainers[i].mEnabled = enabled[i]; 6697 mContainers[i].mId = i; 6698 } 6699 } 6700 6701 /* 6702 * Whenever the data set changes due to filtering, this class ensures 6703 * that the checked item remains checked. 6704 */ 6705 private class SingleDataSetObserver extends DataSetObserver { 6706 private long mCheckedId; 6707 private ListView mListView; 6708 private Adapter mAdapter; 6709 6710 /* 6711 * Create a new observer. 6712 * @param id The ID of the item to keep checked. 6713 * @param l ListView for getting and clearing the checked states 6714 * @param a Adapter for getting the IDs 6715 */ 6716 public SingleDataSetObserver(long id, ListView l, Adapter a) { 6717 mCheckedId = id; 6718 mListView = l; 6719 mAdapter = a; 6720 } 6721 6722 public void onChanged() { 6723 // The filter may have changed which item is checked. Find the 6724 // item that the ListView thinks is checked. 6725 int position = mListView.getCheckedItemPosition(); 6726 long id = mAdapter.getItemId(position); 6727 if (mCheckedId != id) { 6728 // Clear the ListView's idea of the checked item, since 6729 // it is incorrect 6730 mListView.clearChoices(); 6731 // Search for mCheckedId. If it is in the filtered list, 6732 // mark it as checked 6733 int count = mAdapter.getCount(); 6734 for (int i = 0; i < count; i++) { 6735 if (mAdapter.getItemId(i) == mCheckedId) { 6736 mListView.setItemChecked(i, true); 6737 break; 6738 } 6739 } 6740 } 6741 } 6742 6743 public void onInvalidate() {} 6744 } 6745 6746 public void run() { 6747 final ListView listView = (ListView) LayoutInflater.from(mContext) 6748 .inflate(com.android.internal.R.layout.select_dialog, null); 6749 final MyArrayListAdapter adapter = new 6750 MyArrayListAdapter(mContext, mContainers, mMultiple); 6751 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 6752 .setView(listView).setCancelable(true) 6753 .setInverseBackgroundForced(true); 6754 6755 if (mMultiple) { 6756 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 6757 public void onClick(DialogInterface dialog, int which) { 6758 mWebViewCore.sendMessage( 6759 EventHub.LISTBOX_CHOICES, 6760 adapter.getCount(), 0, 6761 listView.getCheckedItemPositions()); 6762 }}); 6763 b.setNegativeButton(android.R.string.cancel, 6764 new DialogInterface.OnClickListener() { 6765 public void onClick(DialogInterface dialog, int which) { 6766 mWebViewCore.sendMessage( 6767 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6768 }}); 6769 } 6770 final AlertDialog dialog = b.create(); 6771 listView.setAdapter(adapter); 6772 listView.setFocusableInTouchMode(true); 6773 // There is a bug (1250103) where the checks in a ListView with 6774 // multiple items selected are associated with the positions, not 6775 // the ids, so the items do not properly retain their checks when 6776 // filtered. Do not allow filtering on multiple lists until 6777 // that bug is fixed. 6778 6779 listView.setTextFilterEnabled(!mMultiple); 6780 if (mMultiple) { 6781 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 6782 int length = mSelectedArray.length; 6783 for (int i = 0; i < length; i++) { 6784 listView.setItemChecked(mSelectedArray[i], true); 6785 } 6786 } else { 6787 listView.setOnItemClickListener(new OnItemClickListener() { 6788 public void onItemClick(AdapterView parent, View v, 6789 int position, long id) { 6790 mWebViewCore.sendMessage( 6791 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 6792 dialog.dismiss(); 6793 } 6794 }); 6795 if (mSelection != -1) { 6796 listView.setSelection(mSelection); 6797 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 6798 listView.setItemChecked(mSelection, true); 6799 DataSetObserver observer = new SingleDataSetObserver( 6800 adapter.getItemId(mSelection), listView, adapter); 6801 adapter.registerDataSetObserver(observer); 6802 } 6803 } 6804 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 6805 public void onCancel(DialogInterface dialog) { 6806 mWebViewCore.sendMessage( 6807 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6808 } 6809 }); 6810 dialog.show(); 6811 } 6812 } 6813 6814 /* 6815 * Request a dropdown menu for a listbox with multiple selection. 6816 * 6817 * @param array Labels for the listbox. 6818 * @param enabledArray State for each element in the list. See static 6819 * integers in Container class. 6820 * @param selectedArray Which positions are initally selected. 6821 */ 6822 void requestListBox(String[] array, int[] enabledArray, int[] 6823 selectedArray) { 6824 mPrivateHandler.post( 6825 new InvokeListBox(array, enabledArray, selectedArray)); 6826 } 6827 6828 private void updateZoomRange(WebViewCore.RestoreState restoreState, 6829 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 6830 if (restoreState.mMinScale == 0) { 6831 if (restoreState.mMobileSite) { 6832 if (minPrefWidth > Math.max(0, viewWidth)) { 6833 mMinZoomScale = (float) viewWidth / minPrefWidth; 6834 mMinZoomScaleFixed = false; 6835 if (updateZoomOverview) { 6836 WebSettings settings = getSettings(); 6837 mInZoomOverview = settings.getUseWideViewPort() && 6838 settings.getLoadWithOverviewMode(); 6839 } 6840 } else { 6841 mMinZoomScale = restoreState.mDefaultScale; 6842 mMinZoomScaleFixed = true; 6843 } 6844 } else { 6845 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 6846 mMinZoomScaleFixed = false; 6847 } 6848 } else { 6849 mMinZoomScale = restoreState.mMinScale; 6850 mMinZoomScaleFixed = true; 6851 } 6852 if (restoreState.mMaxScale == 0) { 6853 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 6854 } else { 6855 mMaxZoomScale = restoreState.mMaxScale; 6856 } 6857 } 6858 6859 /* 6860 * Request a dropdown menu for a listbox with single selection or a single 6861 * <select> element. 6862 * 6863 * @param array Labels for the listbox. 6864 * @param enabledArray State for each element in the list. See static 6865 * integers in Container class. 6866 * @param selection Which position is initally selected. 6867 */ 6868 void requestListBox(String[] array, int[] enabledArray, int selection) { 6869 mPrivateHandler.post( 6870 new InvokeListBox(array, enabledArray, selection)); 6871 } 6872 6873 // called by JNI 6874 private void sendMoveFocus(int frame, int node) { 6875 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 6876 new WebViewCore.CursorData(frame, node, 0, 0)); 6877 } 6878 6879 // called by JNI 6880 private void sendMoveMouse(int frame, int node, int x, int y) { 6881 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 6882 new WebViewCore.CursorData(frame, node, x, y)); 6883 } 6884 6885 /* 6886 * Send a mouse move event to the webcore thread. 6887 * 6888 * @param removeFocus Pass true if the "mouse" cursor is now over a node 6889 * which wants key events, but it is not the focus. This 6890 * will make the visual appear as though nothing is in 6891 * focus. Remove the WebTextView, if present, and stop 6892 * drawing the blinking caret. 6893 * called by JNI 6894 */ 6895 private void sendMoveMouseIfLatest(boolean removeFocus) { 6896 if (removeFocus) { 6897 clearTextEntry(true); 6898 } 6899 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 6900 cursorData()); 6901 } 6902 6903 // called by JNI 6904 private void sendMotionUp(int touchGeneration, 6905 int frame, int node, int x, int y) { 6906 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6907 touchUpData.mMoveGeneration = touchGeneration; 6908 touchUpData.mFrame = frame; 6909 touchUpData.mNode = node; 6910 touchUpData.mX = x; 6911 touchUpData.mY = y; 6912 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6913 } 6914 6915 6916 private int getScaledMaxXScroll() { 6917 int width; 6918 if (mHeightCanMeasure == false) { 6919 width = getViewWidth() / 4; 6920 } else { 6921 Rect visRect = new Rect(); 6922 calcOurVisibleRect(visRect); 6923 width = visRect.width() / 2; 6924 } 6925 // FIXME the divisor should be retrieved from somewhere 6926 return viewToContentX(width); 6927 } 6928 6929 private int getScaledMaxYScroll() { 6930 int height; 6931 if (mHeightCanMeasure == false) { 6932 height = getViewHeight() / 4; 6933 } else { 6934 Rect visRect = new Rect(); 6935 calcOurVisibleRect(visRect); 6936 height = visRect.height() / 2; 6937 } 6938 // FIXME the divisor should be retrieved from somewhere 6939 // the closest thing today is hard-coded into ScrollView.java 6940 // (from ScrollView.java, line 363) int maxJump = height/2; 6941 return Math.round(height * mInvActualScale); 6942 } 6943 6944 /** 6945 * Called by JNI to invalidate view 6946 */ 6947 private void viewInvalidate() { 6948 invalidate(); 6949 } 6950 6951 /** 6952 * Pass the key to the plugin. This assumes that nativeFocusIsPlugin() 6953 * returned true. 6954 */ 6955 private void letPluginHandleNavKey(int keyCode, long time, boolean down) { 6956 int keyEventAction; 6957 int eventHubAction; 6958 if (down) { 6959 keyEventAction = KeyEvent.ACTION_DOWN; 6960 eventHubAction = EventHub.KEY_DOWN; 6961 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 6962 } else { 6963 keyEventAction = KeyEvent.ACTION_UP; 6964 eventHubAction = EventHub.KEY_UP; 6965 } 6966 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 6967 1, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 6968 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 6969 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 6970 , 0, 0, 0); 6971 mWebViewCore.sendMessage(eventHubAction, event); 6972 } 6973 6974 // return true if the key was handled 6975 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 6976 long time) { 6977 if (mNativeClass == 0) { 6978 return false; 6979 } 6980 mLastCursorTime = time; 6981 mLastCursorBounds = nativeGetCursorRingBounds(); 6982 boolean keyHandled 6983 = nativeMoveCursor(keyCode, count, noScroll) == false; 6984 if (DebugFlags.WEB_VIEW) { 6985 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 6986 + " mLastCursorTime=" + mLastCursorTime 6987 + " handled=" + keyHandled); 6988 } 6989 if (keyHandled == false || mHeightCanMeasure == false) { 6990 return keyHandled; 6991 } 6992 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 6993 if (contentCursorRingBounds.isEmpty()) return keyHandled; 6994 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 6995 Rect visRect = new Rect(); 6996 calcOurVisibleRect(visRect); 6997 Rect outset = new Rect(visRect); 6998 int maxXScroll = visRect.width() / 2; 6999 int maxYScroll = visRect.height() / 2; 7000 outset.inset(-maxXScroll, -maxYScroll); 7001 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7002 return keyHandled; 7003 } 7004 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7005 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7006 maxXScroll); 7007 if (maxH > 0) { 7008 pinScrollBy(maxH, 0, true, 0); 7009 } else { 7010 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7011 -maxXScroll); 7012 if (maxH < 0) { 7013 pinScrollBy(maxH, 0, true, 0); 7014 } 7015 } 7016 if (mLastCursorBounds.isEmpty()) return keyHandled; 7017 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7018 return keyHandled; 7019 } 7020 if (DebugFlags.WEB_VIEW) { 7021 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7022 + contentCursorRingBounds); 7023 } 7024 requestRectangleOnScreen(viewCursorRingBounds); 7025 mUserScroll = true; 7026 return keyHandled; 7027 } 7028 7029 /** 7030 * Set the background color. It's white by default. Pass 7031 * zero to make the view transparent. 7032 * @param color the ARGB color described by Color.java 7033 */ 7034 public void setBackgroundColor(int color) { 7035 mBackgroundColor = color; 7036 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7037 } 7038 7039 public void debugDump() { 7040 nativeDebugDump(); 7041 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7042 } 7043 7044 /** 7045 * Draw the HTML page into the specified canvas. This call ignores any 7046 * view-specific zoom, scroll offset, or other changes. It does not draw 7047 * any view-specific chrome, such as progress or URL bars. 7048 * 7049 * @hide only needs to be accessible to Browser and testing 7050 */ 7051 public void drawPage(Canvas canvas) { 7052 mWebViewCore.drawContentPicture(canvas, 0, false, false); 7053 } 7054 7055 /** 7056 * Set the time to wait between passing touches to WebCore. See also the 7057 * TOUCH_SENT_INTERVAL member for further discussion. 7058 * 7059 * @hide This is only used by the DRT test application. 7060 */ 7061 public void setTouchInterval(int interval) { 7062 mCurrentTouchInterval = interval; 7063 } 7064 7065 /** 7066 * Update our cache with updatedText. 7067 * @param updatedText The new text to put in our cache. 7068 */ 7069 /* package */ void updateCachedTextfield(String updatedText) { 7070 // Also place our generation number so that when we look at the cache 7071 // we recognize that it is up to date. 7072 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7073 } 7074 7075 private native int nativeCacheHitFramePointer(); 7076 private native Rect nativeCacheHitNodeBounds(); 7077 private native int nativeCacheHitNodePointer(); 7078 /* package */ native void nativeClearCursor(); 7079 private native void nativeCreate(int ptr); 7080 private native int nativeCursorFramePointer(); 7081 private native Rect nativeCursorNodeBounds(); 7082 private native int nativeCursorNodePointer(); 7083 /* package */ native boolean nativeCursorMatchesFocus(); 7084 private native boolean nativeCursorIntersects(Rect visibleRect); 7085 private native boolean nativeCursorIsAnchor(); 7086 private native boolean nativeCursorIsTextInput(); 7087 private native Point nativeCursorPosition(); 7088 private native String nativeCursorText(); 7089 /** 7090 * Returns true if the native cursor node says it wants to handle key events 7091 * (ala plugins). This can only be called if mNativeClass is non-zero! 7092 */ 7093 private native boolean nativeCursorWantsKeyEvents(); 7094 private native void nativeDebugDump(); 7095 private native void nativeDestroy(); 7096 private native boolean nativeEvaluateLayersAnimations(); 7097 private native void nativeDrawExtras(Canvas canvas, int extra); 7098 private native void nativeDumpDisplayTree(String urlOrNull); 7099 private native int nativeFindAll(String findLower, String findUpper); 7100 private native void nativeFindNext(boolean forward); 7101 /* package */ native int nativeFocusCandidateFramePointer(); 7102 private native boolean nativeFocusCandidateIsPassword(); 7103 private native boolean nativeFocusCandidateIsRtlText(); 7104 private native boolean nativeFocusCandidateIsTextInput(); 7105 /* package */ native int nativeFocusCandidateMaxLength(); 7106 /* package */ native String nativeFocusCandidateName(); 7107 private native Rect nativeFocusCandidateNodeBounds(); 7108 private native int nativeFocusCandidatePointer(); 7109 private native String nativeFocusCandidateText(); 7110 private native int nativeFocusCandidateTextSize(); 7111 /** 7112 * Returns an integer corresponding to WebView.cpp::type. 7113 * See WebTextView.setType() 7114 */ 7115 private native int nativeFocusCandidateType(); 7116 private native boolean nativeFocusIsPlugin(); 7117 /* package */ native int nativeFocusNodePointer(); 7118 private native Rect nativeGetCursorRingBounds(); 7119 private native String nativeGetSelection(); 7120 private native boolean nativeHasCursorNode(); 7121 private native boolean nativeHasFocusNode(); 7122 private native void nativeHideCursor(); 7123 private native String nativeImageURI(int x, int y); 7124 private native void nativeInstrumentReport(); 7125 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7126 // return true if the page has been scrolled 7127 private native boolean nativeMotionUp(int x, int y, int slop); 7128 // returns false if it handled the key 7129 private native boolean nativeMoveCursor(int keyCode, int count, 7130 boolean noScroll); 7131 private native int nativeMoveGeneration(); 7132 private native void nativeMoveSelection(int x, int y, 7133 boolean extendSelection); 7134 private native boolean nativePointInNavCache(int x, int y, int slop); 7135 // Like many other of our native methods, you must make sure that 7136 // mNativeClass is not null before calling this method. 7137 private native void nativeRecordButtons(boolean focused, 7138 boolean pressed, boolean invalidate); 7139 private native void nativeSelectBestAt(Rect rect); 7140 private native void nativeSetFindIsEmpty(); 7141 private native void nativeSetFindIsUp(boolean isUp); 7142 private native void nativeSetFollowedLink(boolean followed); 7143 private native void nativeSetHeightCanMeasure(boolean measure); 7144 private native void nativeSetRootLayer(int layer); 7145 private native void nativeSetSelectionPointer(boolean set, 7146 float scale, int x, int y, boolean extendSelection); 7147 private native void nativeSetSelectionRegion(boolean set); 7148 private native Rect nativeSubtractLayers(Rect content); 7149 private native int nativeTextGeneration(); 7150 // Never call this version except by updateCachedTextfield(String) - 7151 // we always want to pass in our generation number. 7152 private native void nativeUpdateCachedTextfield(String updatedText, 7153 int generation); 7154 // return NO_LEFTEDGE means failure. 7155 private static final int NO_LEFTEDGE = -1; 7156 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 7157} 7158