WebView.java revision da3e835ce500a291938eeb5ce06082bdf2b3b6f7
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.annotation.Widget; 20import android.app.AlertDialog; 21import android.content.Context; 22import android.content.DialogInterface; 23import android.content.Intent; 24import android.content.DialogInterface.OnCancelListener; 25import android.content.pm.PackageManager; 26import android.database.DataSetObserver; 27import android.graphics.Bitmap; 28import android.graphics.BitmapFactory; 29import android.graphics.BitmapShader; 30import android.graphics.Canvas; 31import android.graphics.Color; 32import android.graphics.Interpolator; 33import android.graphics.Paint; 34import android.graphics.Picture; 35import android.graphics.Point; 36import android.graphics.Rect; 37import android.graphics.Region; 38import android.graphics.Shader; 39import android.graphics.drawable.Drawable; 40import android.net.Uri; 41import android.net.http.SslCertificate; 42import android.os.Bundle; 43import android.os.Handler; 44import android.os.Message; 45import android.os.ServiceManager; 46import android.os.SystemClock; 47import android.text.IClipboard; 48import android.text.Selection; 49import android.text.Spannable; 50import android.util.AttributeSet; 51import android.util.EventLog; 52import android.util.Log; 53import android.util.TypedValue; 54import android.view.Gravity; 55import android.view.KeyEvent; 56import android.view.LayoutInflater; 57import android.view.MotionEvent; 58import android.view.ScaleGestureDetector; 59import android.view.SoundEffectConstants; 60import android.view.VelocityTracker; 61import android.view.View; 62import android.view.ViewConfiguration; 63import android.view.ViewGroup; 64import android.view.ViewTreeObserver; 65import android.view.animation.AlphaAnimation; 66import android.view.inputmethod.EditorInfo; 67import android.view.inputmethod.InputConnection; 68import android.view.inputmethod.InputMethodManager; 69import android.webkit.WebTextView.AutoCompleteAdapter; 70import android.webkit.WebViewCore.EventHub; 71import android.webkit.WebViewCore.TouchEventData; 72import android.widget.AbsoluteLayout; 73import android.widget.Adapter; 74import android.widget.AdapterView; 75import android.widget.ArrayAdapter; 76import android.widget.CheckedTextView; 77import android.widget.FrameLayout; 78import android.widget.LinearLayout; 79import android.widget.ListView; 80import android.widget.Scroller; 81import android.widget.Toast; 82import android.widget.ZoomButtonsController; 83import android.widget.ZoomControls; 84import android.widget.AdapterView.OnItemClickListener; 85 86import java.io.File; 87import java.io.FileInputStream; 88import java.io.FileNotFoundException; 89import java.io.FileOutputStream; 90import java.io.IOException; 91import java.net.URLDecoder; 92import java.util.ArrayList; 93import java.util.HashMap; 94import java.util.List; 95import java.util.Map; 96import java.util.Set; 97 98import junit.framework.Assert; 99 100/** 101 * <p>A View that displays web pages. This class is the basis upon which you 102 * can roll your own web browser or simply display some online content within your Activity. 103 * It uses the WebKit rendering engine to display 104 * web pages and includes methods to navigate forward and backward 105 * through a history, zoom in and out, perform text searches and more.</p> 106 * <p>To enable the built-in zoom, set 107 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 108 * (introduced in API version 3). 109 * <p>Note that, in order for your Activity to access the Internet and load web pages 110 * in a WebView, you must add the <var>INTERNET</var> permissions to your 111 * Android Manifest file:</p> 112 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 113 * 114 * <p>This must be a child of the <code><manifest></code> element.</p> 115 * 116 * <h3>Basic usage</h3> 117 * 118 * <p>By default, a WebView provides no browser-like widgets, does not 119 * enable JavaScript and errors will be ignored. If your goal is only 120 * to display some HTML as a part of your UI, this is probably fine; 121 * the user won't need to interact with the web page beyond reading 122 * it, and the web page won't need to interact with the user. If you 123 * actually want a fully blown web browser, then you probably want to 124 * invoke the Browser application with your URL rather than show it 125 * with a WebView. See {@link android.content.Intent} for more information.</p> 126 * 127 * <pre class="prettyprint"> 128 * WebView webview = new WebView(this); 129 * setContentView(webview); 130 * 131 * // Simplest usage: note that an exception will NOT be thrown 132 * // if there is an error loading this page (see below). 133 * webview.loadUrl("http://slashdot.org/"); 134 * 135 * // Of course you can also load from any string: 136 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 137 * webview.loadData(summary, "text/html", "utf-8"); 138 * // ... although note that there are restrictions on what this HTML can do. 139 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 140 * </pre> 141 * 142 * <p>A WebView has several customization points where you can add your 143 * own behavior. These are:</p> 144 * 145 * <ul> 146 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 147 * This class is called when something that might impact a 148 * browser UI happens, for instance, progress updates and 149 * JavaScript alerts are sent here. 150 * </li> 151 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 152 * It will be called when things happen that impact the 153 * rendering of the content, eg, errors or form submissions. You 154 * can also intercept URL loading here.</li> 155 * <li>Via the {@link android.webkit.WebSettings} class, which contains 156 * miscellaneous configuration. </li> 157 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 158 * This lets you bind Java objects into the WebView so they can be 159 * controlled from the web pages JavaScript.</li> 160 * </ul> 161 * 162 * <p>Here's a more complicated example, showing error handling, 163 * settings, and progress notification:</p> 164 * 165 * <pre class="prettyprint"> 166 * // Let's display the progress in the activity title bar, like the 167 * // browser app does. 168 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 169 * 170 * webview.getSettings().setJavaScriptEnabled(true); 171 * 172 * final Activity activity = this; 173 * webview.setWebChromeClient(new WebChromeClient() { 174 * public void onProgressChanged(WebView view, int progress) { 175 * // Activities and WebViews measure progress with different scales. 176 * // The progress meter will automatically disappear when we reach 100% 177 * activity.setProgress(progress * 1000); 178 * } 179 * }); 180 * webview.setWebViewClient(new WebViewClient() { 181 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 182 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 183 * } 184 * }); 185 * 186 * webview.loadUrl("http://slashdot.org/"); 187 * </pre> 188 * 189 * <h3>Cookie and window management</h3> 190 * 191 * <p>For obvious security reasons, your application has its own 192 * cache, cookie store etc - it does not share the Browser 193 * applications data. Cookies are managed on a separate thread, so 194 * operations like index building don't block the UI 195 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 196 * if you want to use cookies in your application. 197 * </p> 198 * 199 * <p>By default, requests by the HTML to open new windows are 200 * ignored. This is true whether they be opened by JavaScript or by 201 * the target attribute on a link. You can customize your 202 * WebChromeClient to provide your own behaviour for opening multiple windows, 203 * and render them in whatever manner you want.</p> 204 * 205 * <p>Standard behavior for an Activity is to be destroyed and 206 * recreated when the devices orientation is changed. This will cause 207 * the WebView to reload the current page. If you don't want that, you 208 * can set your Activity to handle the orientation and keyboardHidden 209 * changes, and then just leave the WebView alone. It'll automatically 210 * re-orient itself as appropriate.</p> 211 */ 212@Widget 213public class WebView extends AbsoluteLayout 214 implements ViewTreeObserver.OnGlobalFocusChangeListener, 215 ViewGroup.OnHierarchyChangeListener { 216 217 // enable debug output for drag trackers 218 private static final boolean DEBUG_DRAG_TRACKER = false; 219 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 220 // the screen all-the-time. Good for profiling our drawing code 221 static private final boolean AUTO_REDRAW_HACK = false; 222 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 223 private boolean mAutoRedraw; 224 225 static final String LOGTAG = "webview"; 226 227 private static class ExtendedZoomControls extends FrameLayout { 228 public ExtendedZoomControls(Context context, AttributeSet attrs) { 229 super(context, attrs); 230 LayoutInflater inflater = (LayoutInflater) 231 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 232 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 233 mPlusMinusZoomControls = (ZoomControls) findViewById( 234 com.android.internal.R.id.zoomControls); 235 findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( 236 View.GONE); 237 } 238 239 public void show(boolean showZoom, boolean canZoomOut) { 240 mPlusMinusZoomControls.setVisibility( 241 showZoom ? View.VISIBLE : View.GONE); 242 fade(View.VISIBLE, 0.0f, 1.0f); 243 } 244 245 public void hide() { 246 fade(View.GONE, 1.0f, 0.0f); 247 } 248 249 private void fade(int visibility, float startAlpha, float endAlpha) { 250 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 251 anim.setDuration(500); 252 startAnimation(anim); 253 setVisibility(visibility); 254 } 255 256 public boolean hasFocus() { 257 return mPlusMinusZoomControls.hasFocus(); 258 } 259 260 public void setOnZoomInClickListener(OnClickListener listener) { 261 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 262 } 263 264 public void setOnZoomOutClickListener(OnClickListener listener) { 265 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 266 } 267 268 ZoomControls mPlusMinusZoomControls; 269 } 270 271 /** 272 * Transportation object for returning WebView across thread boundaries. 273 */ 274 public class WebViewTransport { 275 private WebView mWebview; 276 277 /** 278 * Set the WebView to the transportation object. 279 * @param webview The WebView to transport. 280 */ 281 public synchronized void setWebView(WebView webview) { 282 mWebview = webview; 283 } 284 285 /** 286 * Return the WebView object. 287 * @return WebView The transported WebView object. 288 */ 289 public synchronized WebView getWebView() { 290 return mWebview; 291 } 292 } 293 294 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 295 private final CallbackProxy mCallbackProxy; 296 297 private final WebViewDatabase mDatabase; 298 299 // SSL certificate for the main top-level page (if secure) 300 private SslCertificate mCertificate; 301 302 // Native WebView pointer that is 0 until the native object has been 303 // created. 304 private int mNativeClass; 305 // This would be final but it needs to be set to null when the WebView is 306 // destroyed. 307 private WebViewCore mWebViewCore; 308 // Handler for dispatching UI messages. 309 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 310 private WebTextView mWebTextView; 311 // Used to ignore changes to webkit text that arrives to the UI side after 312 // more key events. 313 private int mTextGeneration; 314 315 /* package */ void incrementTextGeneration() { mTextGeneration++; } 316 317 // Used by WebViewCore to create child views. 318 /* package */ final ViewManager mViewManager; 319 320 // Used to display in full screen mode 321 PluginFullScreenHolder mFullScreenHolder; 322 323 /** 324 * Position of the last touch event. 325 */ 326 private float mLastTouchX; 327 private float mLastTouchY; 328 329 /** 330 * Time of the last touch event. 331 */ 332 private long mLastTouchTime; 333 334 /** 335 * Time of the last time sending touch event to WebViewCore 336 */ 337 private long mLastSentTouchTime; 338 339 /** 340 * The minimum elapsed time before sending another ACTION_MOVE event to 341 * WebViewCore. This really should be tuned for each type of the devices. 342 * For example in Google Map api test case, it takes Dream device at least 343 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 344 * triggering the layout and drawing the picture. While the same process 345 * takes 60+ms on the current high speed device. If we make 346 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 347 * to WebViewCore queue and the real layout and draw events will be pushed 348 * to further, which slows down the refresh rate. Choose 50 to favor the 349 * current high speed devices. For Dream like devices, 100 is a better 350 * choice. Maybe make this in the buildspec later. 351 */ 352 private static final int TOUCH_SENT_INTERVAL = 50; 353 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 354 355 /** 356 * Helper class to get velocity for fling 357 */ 358 VelocityTracker mVelocityTracker; 359 private int mMaximumFling; 360 private float mLastVelocity; 361 private float mLastVelX; 362 private float mLastVelY; 363 364 /** 365 * Touch mode 366 */ 367 private int mTouchMode = TOUCH_DONE_MODE; 368 private static final int TOUCH_INIT_MODE = 1; 369 private static final int TOUCH_DRAG_START_MODE = 2; 370 private static final int TOUCH_DRAG_MODE = 3; 371 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 372 private static final int TOUCH_SHORTPRESS_MODE = 5; 373 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 374 private static final int TOUCH_DONE_MODE = 7; 375 private static final int TOUCH_SELECT_MODE = 8; 376 private static final int TOUCH_PINCH_DRAG = 9; 377 378 // Whether to forward the touch events to WebCore 379 private boolean mForwardTouchEvents = false; 380 381 // Whether to prevent default during touch. The initial value depends on 382 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 383 // for touch down. Otherwise UI will wait for the answer of the first 384 // confirmed move before taking over the control. 385 private static final int PREVENT_DEFAULT_NO = 0; 386 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 387 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 388 private static final int PREVENT_DEFAULT_YES = 3; 389 private static final int PREVENT_DEFAULT_IGNORE = 4; 390 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 391 392 // true when the touch movement exceeds the slop 393 private boolean mConfirmMove; 394 395 // if true, touch events will be first processed by WebCore, if prevent 396 // default is not set, the UI will continue handle them. 397 private boolean mDeferTouchProcess; 398 399 // to avoid interfering with the current touch events, track them 400 // separately. Currently no snapping or fling in the deferred process mode 401 private int mDeferTouchMode = TOUCH_DONE_MODE; 402 private float mLastDeferTouchX; 403 private float mLastDeferTouchY; 404 405 // To keep track of whether the current drag was initiated by a WebTextView, 406 // so that we know not to hide the cursor 407 boolean mDragFromTextInput; 408 409 // Whether or not to draw the cursor ring. 410 private boolean mDrawCursorRing = true; 411 412 // true if onPause has been called (and not onResume) 413 private boolean mIsPaused; 414 415 // true if, during a transition to a new page, we're delaying 416 // deleting a root layer until there's something to draw of the new page. 417 private boolean mDelayedDeleteRootLayer; 418 419 /** 420 * Customizable constant 421 */ 422 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 423 private int mTouchSlopSquare; 424 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 425 private int mDoubleTapSlopSquare; 426 // pre-computed density adjusted navigation slop 427 private int mNavSlop; 428 // This should be ViewConfiguration.getTapTimeout() 429 // But system time out is 100ms, which is too short for the browser. 430 // In the browser, if it switches out of tap too soon, jump tap won't work. 431 private static final int TAP_TIMEOUT = 200; 432 // This should be ViewConfiguration.getLongPressTimeout() 433 // But system time out is 500ms, which is too short for the browser. 434 // With a short timeout, it's difficult to treat trigger a short press. 435 private static final int LONG_PRESS_TIMEOUT = 1000; 436 // needed to avoid flinging after a pause of no movement 437 private static final int MIN_FLING_TIME = 250; 438 // draw unfiltered after drag is held without movement 439 private static final int MOTIONLESS_TIME = 100; 440 // The time that the Zoom Controls are visible before fading away 441 private static final long ZOOM_CONTROLS_TIMEOUT = 442 ViewConfiguration.getZoomControlsTimeout(); 443 // The amount of content to overlap between two screens when going through 444 // pages with the space bar, in pixels. 445 private static final int PAGE_SCROLL_OVERLAP = 24; 446 447 /** 448 * These prevent calling requestLayout if either dimension is fixed. This 449 * depends on the layout parameters and the measure specs. 450 */ 451 boolean mWidthCanMeasure; 452 boolean mHeightCanMeasure; 453 454 // Remember the last dimensions we sent to the native side so we can avoid 455 // sending the same dimensions more than once. 456 int mLastWidthSent; 457 int mLastHeightSent; 458 459 private int mContentWidth; // cache of value from WebViewCore 460 private int mContentHeight; // cache of value from WebViewCore 461 462 // Need to have the separate control for horizontal and vertical scrollbar 463 // style than the View's single scrollbar style 464 private boolean mOverlayHorizontalScrollbar = true; 465 private boolean mOverlayVerticalScrollbar = false; 466 467 // our standard speed. this way small distances will be traversed in less 468 // time than large distances, but we cap the duration, so that very large 469 // distances won't take too long to get there. 470 private static final int STD_SPEED = 480; // pixels per second 471 // time for the longest scroll animation 472 private static final int MAX_DURATION = 750; // milliseconds 473 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 474 private Scroller mScroller; 475 476 private boolean mWrapContent; 477 private static final int MOTIONLESS_FALSE = 0; 478 private static final int MOTIONLESS_PENDING = 1; 479 private static final int MOTIONLESS_TRUE = 2; 480 private static final int MOTIONLESS_IGNORE = 3; 481 private int mHeldMotionless; 482 483 // whether support multi-touch 484 private boolean mSupportMultiTouch; 485 // use the framework's ScaleGestureDetector to handle multi-touch 486 private ScaleGestureDetector mScaleDetector; 487 488 // the anchor point in the document space where VIEW_SIZE_CHANGED should 489 // apply to 490 private int mAnchorX; 491 private int mAnchorY; 492 493 /* 494 * Private message ids 495 */ 496 private static final int REMEMBER_PASSWORD = 1; 497 private static final int NEVER_REMEMBER_PASSWORD = 2; 498 private static final int SWITCH_TO_SHORTPRESS = 3; 499 private static final int SWITCH_TO_LONGPRESS = 4; 500 private static final int RELEASE_SINGLE_TAP = 5; 501 private static final int REQUEST_FORM_DATA = 6; 502 private static final int RESUME_WEBCORE_PRIORITY = 7; 503 private static final int DRAG_HELD_MOTIONLESS = 8; 504 private static final int AWAKEN_SCROLL_BARS = 9; 505 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 506 507 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 508 private static final int LAST_PRIVATE_MSG_ID = PREVENT_DEFAULT_TIMEOUT; 509 510 /* 511 * Package message ids 512 */ 513 //! arg1=x, arg2=y 514 static final int SCROLL_TO_MSG_ID = 101; 515 static final int SCROLL_BY_MSG_ID = 102; 516 //! arg1=x, arg2=y 517 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 518 //! arg1=x, arg2=y 519 static final int SYNC_SCROLL_TO_MSG_ID = 104; 520 static final int NEW_PICTURE_MSG_ID = 105; 521 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 522 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 523 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 524 static final int UPDATE_ZOOM_RANGE = 109; 525 static final int MOVE_OUT_OF_PLUGIN = 110; 526 static final int CLEAR_TEXT_ENTRY = 111; 527 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 528 static final int SHOW_RECT_MSG_ID = 113; 529 static final int LONG_PRESS_CENTER = 114; 530 static final int PREVENT_TOUCH_ID = 115; 531 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 532 // obj=Rect in doc coordinates 533 static final int INVAL_RECT_MSG_ID = 117; 534 static final int REQUEST_KEYBOARD = 118; 535 static final int DO_MOTION_UP = 119; 536 static final int SHOW_FULLSCREEN = 120; 537 static final int HIDE_FULLSCREEN = 121; 538 static final int DOM_FOCUS_CHANGED = 122; 539 static final int IMMEDIATE_REPAINT_MSG_ID = 123; 540 static final int SET_ROOT_LAYER_MSG_ID = 124; 541 static final int RETURN_LABEL = 125; 542 static final int FIND_AGAIN = 126; 543 static final int CENTER_FIT_RECT = 127; 544 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 545 static final int SET_SCROLLBAR_MODES = 129; 546 547 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 548 private static final int LAST_PACKAGE_MSG_ID = SET_SCROLLBAR_MODES; 549 550 static final String[] HandlerPrivateDebugString = { 551 "REMEMBER_PASSWORD", // = 1; 552 "NEVER_REMEMBER_PASSWORD", // = 2; 553 "SWITCH_TO_SHORTPRESS", // = 3; 554 "SWITCH_TO_LONGPRESS", // = 4; 555 "RELEASE_SINGLE_TAP", // = 5; 556 "REQUEST_FORM_DATA", // = 6; 557 "RESUME_WEBCORE_PRIORITY", // = 7; 558 "DRAG_HELD_MOTIONLESS", // = 8; 559 "AWAKEN_SCROLL_BARS", // = 9; 560 "PREVENT_DEFAULT_TIMEOUT" // = 10; 561 }; 562 563 static final String[] HandlerPackageDebugString = { 564 "SCROLL_TO_MSG_ID", // = 101; 565 "SCROLL_BY_MSG_ID", // = 102; 566 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 567 "SYNC_SCROLL_TO_MSG_ID", // = 104; 568 "NEW_PICTURE_MSG_ID", // = 105; 569 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 570 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 571 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 572 "UPDATE_ZOOM_RANGE", // = 109; 573 "MOVE_OUT_OF_PLUGIN", // = 110; 574 "CLEAR_TEXT_ENTRY", // = 111; 575 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 576 "SHOW_RECT_MSG_ID", // = 113; 577 "LONG_PRESS_CENTER", // = 114; 578 "PREVENT_TOUCH_ID", // = 115; 579 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 580 "INVAL_RECT_MSG_ID", // = 117; 581 "REQUEST_KEYBOARD", // = 118; 582 "DO_MOTION_UP", // = 119; 583 "SHOW_FULLSCREEN", // = 120; 584 "HIDE_FULLSCREEN", // = 121; 585 "DOM_FOCUS_CHANGED", // = 122; 586 "IMMEDIATE_REPAINT_MSG_ID", // = 123; 587 "SET_ROOT_LAYER_MSG_ID", // = 124; 588 "RETURN_LABEL", // = 125; 589 "FIND_AGAIN", // = 126; 590 "CENTER_FIT_RECT", // = 127; 591 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 592 "SET_SCROLLBAR_MODES" // = 129; 593 }; 594 595 // If the site doesn't use the viewport meta tag to specify the viewport, 596 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 597 static final int DEFAULT_VIEWPORT_WIDTH = 800; 598 599 // normally we try to fit the content to the minimum preferred width 600 // calculated by the Webkit. To avoid the bad behavior when some site's 601 // minimum preferred width keeps growing when changing the viewport width or 602 // the minimum preferred width is huge, an upper limit is needed. 603 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 604 605 // default scale limit. Depending on the display density 606 private static float DEFAULT_MAX_ZOOM_SCALE; 607 private static float DEFAULT_MIN_ZOOM_SCALE; 608 // scale limit, which can be set through viewport meta tag in the web page 609 private float mMaxZoomScale; 610 private float mMinZoomScale; 611 private boolean mMinZoomScaleFixed = true; 612 613 // initial scale in percent. 0 means using default. 614 private int mInitialScaleInPercent = 0; 615 616 // while in the zoom overview mode, the page's width is fully fit to the 617 // current window. The page is alive, in another words, you can click to 618 // follow the links. Double tap will toggle between zoom overview mode and 619 // the last zoom scale. 620 boolean mInZoomOverview = false; 621 622 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 623 // engadget always have wider mContentWidth no matter what viewport size is. 624 int mZoomOverviewWidth = DEFAULT_VIEWPORT_WIDTH; 625 float mTextWrapScale; 626 627 // default scale. Depending on the display density. 628 static int DEFAULT_SCALE_PERCENT; 629 private float mDefaultScale; 630 631 private static float MINIMUM_SCALE_INCREMENT = 0.01f; 632 633 // set to true temporarily during ScaleGesture triggered zoom 634 private boolean mPreviewZoomOnly = false; 635 636 // computed scale and inverse, from mZoomWidth. 637 private float mActualScale; 638 private float mInvActualScale; 639 // if this is non-zero, it is used on drawing rather than mActualScale 640 private float mZoomScale; 641 private float mInvInitialZoomScale; 642 private float mInvFinalZoomScale; 643 private int mInitialScrollX; 644 private int mInitialScrollY; 645 private long mZoomStart; 646 private static final int ZOOM_ANIMATION_LENGTH = 500; 647 648 private boolean mUserScroll = false; 649 650 private int mSnapScrollMode = SNAP_NONE; 651 private static final int SNAP_NONE = 0; 652 private static final int SNAP_LOCK = 1; // not a separate state 653 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 654 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 655 private boolean mSnapPositive; 656 657 // keep these in sync with their counterparts in WebView.cpp 658 private static final int DRAW_EXTRAS_NONE = 0; 659 private static final int DRAW_EXTRAS_FIND = 1; 660 private static final int DRAW_EXTRAS_SELECTION = 2; 661 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 662 663 // keep this in sync with WebCore:ScrollbarMode in WebKit 664 private static final int SCROLLBAR_AUTO = 0; 665 private static final int SCROLLBAR_ALWAYSOFF = 1; 666 // as we auto fade scrollbar, this is ignored. 667 private static final int SCROLLBAR_ALWAYSON = 2; 668 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 669 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 670 671 // Used to match key downs and key ups 672 private boolean mGotKeyDown; 673 674 /* package */ static boolean mLogEvent = true; 675 676 // for event log 677 private long mLastTouchUpTime = 0; 678 679 /** 680 * URI scheme for telephone number 681 */ 682 public static final String SCHEME_TEL = "tel:"; 683 /** 684 * URI scheme for email address 685 */ 686 public static final String SCHEME_MAILTO = "mailto:"; 687 /** 688 * URI scheme for map address 689 */ 690 public static final String SCHEME_GEO = "geo:0,0?q="; 691 692 private int mBackgroundColor = Color.WHITE; 693 694 // Used to notify listeners of a new picture. 695 private PictureListener mPictureListener; 696 /** 697 * Interface to listen for new pictures as they change. 698 */ 699 public interface PictureListener { 700 /** 701 * Notify the listener that the picture has changed. 702 * @param view The WebView that owns the picture. 703 * @param picture The new picture. 704 */ 705 public void onNewPicture(WebView view, Picture picture); 706 } 707 708 // FIXME: Want to make this public, but need to change the API file. 709 public /*static*/ class HitTestResult { 710 /** 711 * Default HitTestResult, where the target is unknown 712 */ 713 public static final int UNKNOWN_TYPE = 0; 714 /** 715 * HitTestResult for hitting a HTML::a tag 716 */ 717 public static final int ANCHOR_TYPE = 1; 718 /** 719 * HitTestResult for hitting a phone number 720 */ 721 public static final int PHONE_TYPE = 2; 722 /** 723 * HitTestResult for hitting a map address 724 */ 725 public static final int GEO_TYPE = 3; 726 /** 727 * HitTestResult for hitting an email address 728 */ 729 public static final int EMAIL_TYPE = 4; 730 /** 731 * HitTestResult for hitting an HTML::img tag 732 */ 733 public static final int IMAGE_TYPE = 5; 734 /** 735 * HitTestResult for hitting a HTML::a tag which contains HTML::img 736 */ 737 public static final int IMAGE_ANCHOR_TYPE = 6; 738 /** 739 * HitTestResult for hitting a HTML::a tag with src=http 740 */ 741 public static final int SRC_ANCHOR_TYPE = 7; 742 /** 743 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 744 */ 745 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 746 /** 747 * HitTestResult for hitting an edit text area 748 */ 749 public static final int EDIT_TEXT_TYPE = 9; 750 751 private int mType; 752 private String mExtra; 753 754 HitTestResult() { 755 mType = UNKNOWN_TYPE; 756 } 757 758 private void setType(int type) { 759 mType = type; 760 } 761 762 private void setExtra(String extra) { 763 mExtra = extra; 764 } 765 766 public int getType() { 767 return mType; 768 } 769 770 public String getExtra() { 771 return mExtra; 772 } 773 } 774 775 // The View containing the zoom controls 776 private ExtendedZoomControls mZoomControls; 777 private Runnable mZoomControlRunnable; 778 779 // mZoomButtonsController will be lazy initialized in 780 // getZoomButtonsController() to get better performance. 781 private ZoomButtonsController mZoomButtonsController; 782 783 // These keep track of the center point of the zoom. They are used to 784 // determine the point around which we should zoom. 785 private float mZoomCenterX; 786 private float mZoomCenterY; 787 788 private ZoomButtonsController.OnZoomListener mZoomListener = 789 new ZoomButtonsController.OnZoomListener() { 790 791 public void onVisibilityChanged(boolean visible) { 792 if (visible) { 793 switchOutDrawHistory(); 794 // Bring back the hidden zoom controls. 795 mZoomButtonsController.getZoomControls().setVisibility( 796 View.VISIBLE); 797 updateZoomButtonsEnabled(); 798 } 799 } 800 801 public void onZoom(boolean zoomIn) { 802 if (zoomIn) { 803 zoomIn(); 804 } else { 805 zoomOut(); 806 } 807 808 updateZoomButtonsEnabled(); 809 } 810 }; 811 812 /** 813 * Construct a new WebView with a Context object. 814 * @param context A Context object used to access application assets. 815 */ 816 public WebView(Context context) { 817 this(context, null); 818 } 819 820 /** 821 * Construct a new WebView with layout parameters. 822 * @param context A Context object used to access application assets. 823 * @param attrs An AttributeSet passed to our parent. 824 */ 825 public WebView(Context context, AttributeSet attrs) { 826 this(context, attrs, com.android.internal.R.attr.webViewStyle); 827 } 828 829 /** 830 * Construct a new WebView with layout parameters and a default style. 831 * @param context A Context object used to access application assets. 832 * @param attrs An AttributeSet passed to our parent. 833 * @param defStyle The default style resource ID. 834 */ 835 public WebView(Context context, AttributeSet attrs, int defStyle) { 836 this(context, attrs, defStyle, null); 837 } 838 839 /** 840 * Construct a new WebView with layout parameters, a default style and a set 841 * of custom Javscript interfaces to be added to the WebView at initialization 842 * time. This guarantees that these interfaces will be available when the JS 843 * context is initialized. 844 * @param context A Context object used to access application assets. 845 * @param attrs An AttributeSet passed to our parent. 846 * @param defStyle The default style resource ID. 847 * @param javascriptInterfaces is a Map of intareface names, as keys, and 848 * object implementing those interfaces, as values. 849 * @hide pending API council approval. 850 */ 851 protected WebView(Context context, AttributeSet attrs, int defStyle, 852 Map<String, Object> javascriptInterfaces) { 853 super(context, attrs, defStyle); 854 init(); 855 856 mCallbackProxy = new CallbackProxy(context, this); 857 mViewManager = new ViewManager(this); 858 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 859 mDatabase = WebViewDatabase.getInstance(context); 860 mScroller = new Scroller(context); 861 862 updateMultiTouchSupport(context); 863 } 864 865 void updateMultiTouchSupport(Context context) { 866 WebSettings settings = getSettings(); 867 mSupportMultiTouch = context.getPackageManager().hasSystemFeature( 868 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 869 && settings.supportZoom() && settings.getBuiltInZoomControls(); 870 if (mSupportMultiTouch && (mScaleDetector == null)) { 871 mScaleDetector = new ScaleGestureDetector(context, 872 new ScaleDetectorListener()); 873 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 874 mScaleDetector = null; 875 } 876 } 877 878 private void updateZoomButtonsEnabled() { 879 if (mZoomButtonsController == null) return; 880 boolean canZoomIn = mActualScale < mMaxZoomScale; 881 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 882 if (!canZoomIn && !canZoomOut) { 883 // Hide the zoom in and out buttons, as well as the fit to page 884 // button, if the page cannot zoom 885 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 886 } else { 887 // Set each one individually, as a page may be able to zoom in 888 // or out. 889 mZoomButtonsController.setZoomInEnabled(canZoomIn); 890 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 891 } 892 } 893 894 private void init() { 895 setWillNotDraw(false); 896 setFocusable(true); 897 setFocusableInTouchMode(true); 898 setClickable(true); 899 setLongClickable(true); 900 901 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 902 int slop = configuration.getScaledTouchSlop(); 903 mTouchSlopSquare = slop * slop; 904 mMinLockSnapReverseDistance = slop; 905 slop = configuration.getScaledDoubleTapSlop(); 906 mDoubleTapSlopSquare = slop * slop; 907 final float density = getContext().getResources().getDisplayMetrics().density; 908 // use one line height, 16 based on our current default font, for how 909 // far we allow a touch be away from the edge of a link 910 mNavSlop = (int) (16 * density); 911 // density adjusted scale factors 912 DEFAULT_SCALE_PERCENT = (int) (100 * density); 913 mDefaultScale = density; 914 mActualScale = density; 915 mInvActualScale = 1 / density; 916 mTextWrapScale = density; 917 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 918 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 919 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 920 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 921 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 922 } 923 924 /* package */void updateDefaultZoomDensity(int zoomDensity) { 925 final float density = getContext().getResources().getDisplayMetrics().density 926 * 100 / zoomDensity; 927 if (Math.abs(density - mDefaultScale) > 0.01) { 928 float scaleFactor = density / mDefaultScale; 929 // adjust the limits 930 mNavSlop = (int) (16 * density); 931 DEFAULT_SCALE_PERCENT = (int) (100 * density); 932 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 933 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 934 mDefaultScale = density; 935 mMaxZoomScale *= scaleFactor; 936 mMinZoomScale *= scaleFactor; 937 setNewZoomScale(mActualScale * scaleFactor, true, false); 938 } 939 } 940 941 /* package */ boolean onSavePassword(String schemePlusHost, String username, 942 String password, final Message resumeMsg) { 943 boolean rVal = false; 944 if (resumeMsg == null) { 945 // null resumeMsg implies saving password silently 946 mDatabase.setUsernamePassword(schemePlusHost, username, password); 947 } else { 948 final Message remember = mPrivateHandler.obtainMessage( 949 REMEMBER_PASSWORD); 950 remember.getData().putString("host", schemePlusHost); 951 remember.getData().putString("username", username); 952 remember.getData().putString("password", password); 953 remember.obj = resumeMsg; 954 955 final Message neverRemember = mPrivateHandler.obtainMessage( 956 NEVER_REMEMBER_PASSWORD); 957 neverRemember.getData().putString("host", schemePlusHost); 958 neverRemember.getData().putString("username", username); 959 neverRemember.getData().putString("password", password); 960 neverRemember.obj = resumeMsg; 961 962 new AlertDialog.Builder(getContext()) 963 .setTitle(com.android.internal.R.string.save_password_label) 964 .setMessage(com.android.internal.R.string.save_password_message) 965 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 966 new DialogInterface.OnClickListener() { 967 public void onClick(DialogInterface dialog, int which) { 968 resumeMsg.sendToTarget(); 969 } 970 }) 971 .setNeutralButton(com.android.internal.R.string.save_password_remember, 972 new DialogInterface.OnClickListener() { 973 public void onClick(DialogInterface dialog, int which) { 974 remember.sendToTarget(); 975 } 976 }) 977 .setNegativeButton(com.android.internal.R.string.save_password_never, 978 new DialogInterface.OnClickListener() { 979 public void onClick(DialogInterface dialog, int which) { 980 neverRemember.sendToTarget(); 981 } 982 }) 983 .setOnCancelListener(new OnCancelListener() { 984 public void onCancel(DialogInterface dialog) { 985 resumeMsg.sendToTarget(); 986 } 987 }).show(); 988 // Return true so that WebViewCore will pause while the dialog is 989 // up. 990 rVal = true; 991 } 992 return rVal; 993 } 994 995 @Override 996 public void setScrollBarStyle(int style) { 997 if (style == View.SCROLLBARS_INSIDE_INSET 998 || style == View.SCROLLBARS_OUTSIDE_INSET) { 999 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1000 } else { 1001 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1002 } 1003 super.setScrollBarStyle(style); 1004 } 1005 1006 /** 1007 * Specify whether the horizontal scrollbar has overlay style. 1008 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1009 */ 1010 public void setHorizontalScrollbarOverlay(boolean overlay) { 1011 mOverlayHorizontalScrollbar = overlay; 1012 } 1013 1014 /** 1015 * Specify whether the vertical scrollbar has overlay style. 1016 * @param overlay TRUE if vertical scrollbar should have overlay style. 1017 */ 1018 public void setVerticalScrollbarOverlay(boolean overlay) { 1019 mOverlayVerticalScrollbar = overlay; 1020 } 1021 1022 /** 1023 * Return whether horizontal scrollbar has overlay style 1024 * @return TRUE if horizontal scrollbar has overlay style. 1025 */ 1026 public boolean overlayHorizontalScrollbar() { 1027 return mOverlayHorizontalScrollbar; 1028 } 1029 1030 /** 1031 * Return whether vertical scrollbar has overlay style 1032 * @return TRUE if vertical scrollbar has overlay style. 1033 */ 1034 public boolean overlayVerticalScrollbar() { 1035 return mOverlayVerticalScrollbar; 1036 } 1037 1038 /* 1039 * Return the width of the view where the content of WebView should render 1040 * to. 1041 * Note: this can be called from WebCoreThread. 1042 */ 1043 /* package */ int getViewWidth() { 1044 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1045 return getWidth(); 1046 } else { 1047 return getWidth() - getVerticalScrollbarWidth(); 1048 } 1049 } 1050 1051 /* 1052 * returns the height of the titlebarview (if any). Does not care about 1053 * scrolling 1054 */ 1055 private int getTitleHeight() { 1056 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1057 } 1058 1059 /* 1060 * Return the amount of the titlebarview (if any) that is visible 1061 */ 1062 private int getVisibleTitleHeight() { 1063 return Math.max(getTitleHeight() - mScrollY, 0); 1064 } 1065 1066 /* 1067 * Return the height of the view where the content of WebView should render 1068 * to. Note that this excludes mTitleBar, if there is one. 1069 * Note: this can be called from WebCoreThread. 1070 */ 1071 /* package */ int getViewHeight() { 1072 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1073 } 1074 1075 private int getViewHeightWithTitle() { 1076 int height = getHeight(); 1077 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1078 height -= getHorizontalScrollbarHeight(); 1079 } 1080 return height; 1081 } 1082 1083 /** 1084 * @return The SSL certificate for the main top-level page or null if 1085 * there is no certificate (the site is not secure). 1086 */ 1087 public SslCertificate getCertificate() { 1088 return mCertificate; 1089 } 1090 1091 /** 1092 * Sets the SSL certificate for the main top-level page. 1093 */ 1094 public void setCertificate(SslCertificate certificate) { 1095 if (DebugFlags.WEB_VIEW) { 1096 Log.v(LOGTAG, "setCertificate=" + certificate); 1097 } 1098 // here, the certificate can be null (if the site is not secure) 1099 mCertificate = certificate; 1100 } 1101 1102 //------------------------------------------------------------------------- 1103 // Methods called by activity 1104 //------------------------------------------------------------------------- 1105 1106 /** 1107 * Save the username and password for a particular host in the WebView's 1108 * internal database. 1109 * @param host The host that required the credentials. 1110 * @param username The username for the given host. 1111 * @param password The password for the given host. 1112 */ 1113 public void savePassword(String host, String username, String password) { 1114 mDatabase.setUsernamePassword(host, username, password); 1115 } 1116 1117 /** 1118 * Set the HTTP authentication credentials for a given host and realm. 1119 * 1120 * @param host The host for the credentials. 1121 * @param realm The realm for the credentials. 1122 * @param username The username for the password. If it is null, it means 1123 * password can't be saved. 1124 * @param password The password 1125 */ 1126 public void setHttpAuthUsernamePassword(String host, String realm, 1127 String username, String password) { 1128 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1129 } 1130 1131 /** 1132 * Retrieve the HTTP authentication username and password for a given 1133 * host & realm pair 1134 * 1135 * @param host The host for which the credentials apply. 1136 * @param realm The realm for which the credentials apply. 1137 * @return String[] if found, String[0] is username, which can be null and 1138 * String[1] is password. Return null if it can't find anything. 1139 */ 1140 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1141 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1142 } 1143 1144 /** 1145 * Destroy the internal state of the WebView. This method should be called 1146 * after the WebView has been removed from the view system. No other 1147 * methods may be called on a WebView after destroy. 1148 */ 1149 public void destroy() { 1150 clearTextEntry(false); 1151 if (mWebViewCore != null) { 1152 // Set the handlers to null before destroying WebViewCore so no 1153 // more messages will be posted. 1154 mCallbackProxy.setWebViewClient(null); 1155 mCallbackProxy.setWebChromeClient(null); 1156 // Tell WebViewCore to destroy itself 1157 synchronized (this) { 1158 WebViewCore webViewCore = mWebViewCore; 1159 mWebViewCore = null; // prevent using partial webViewCore 1160 webViewCore.destroy(); 1161 } 1162 // Remove any pending messages that might not be serviced yet. 1163 mPrivateHandler.removeCallbacksAndMessages(null); 1164 mCallbackProxy.removeCallbacksAndMessages(null); 1165 // Wake up the WebCore thread just in case it is waiting for a 1166 // javascript dialog. 1167 synchronized (mCallbackProxy) { 1168 mCallbackProxy.notify(); 1169 } 1170 } 1171 if (mNativeClass != 0) { 1172 nativeDestroy(); 1173 mNativeClass = 0; 1174 } 1175 } 1176 1177 /** 1178 * Enables platform notifications of data state and proxy changes. 1179 */ 1180 public static void enablePlatformNotifications() { 1181 Network.enablePlatformNotifications(); 1182 } 1183 1184 /** 1185 * If platform notifications are enabled, this should be called 1186 * from the Activity's onPause() or onStop(). 1187 */ 1188 public static void disablePlatformNotifications() { 1189 Network.disablePlatformNotifications(); 1190 } 1191 1192 /** 1193 * Sets JavaScript engine flags. 1194 * 1195 * @param flags JS engine flags in a String 1196 * 1197 * @hide pending API solidification 1198 */ 1199 public void setJsFlags(String flags) { 1200 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1201 } 1202 1203 /** 1204 * Inform WebView of the network state. This is used to set 1205 * the javascript property window.navigator.isOnline and 1206 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1207 * @param networkUp boolean indicating if network is available 1208 */ 1209 public void setNetworkAvailable(boolean networkUp) { 1210 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1211 networkUp ? 1 : 0, 0); 1212 } 1213 1214 /** 1215 * Inform WebView about the current network type. 1216 * {@hide} 1217 */ 1218 public void setNetworkType(String type, String subtype) { 1219 Map<String, String> map = new HashMap<String, String>(); 1220 map.put("type", type); 1221 map.put("subtype", subtype); 1222 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1223 } 1224 /** 1225 * Save the state of this WebView used in 1226 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1227 * method no longer stores the display data for this WebView. The previous 1228 * behavior could potentially leak files if {@link #restoreState} was never 1229 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1230 * and restoring the display data. 1231 * @param outState The Bundle to store the WebView state. 1232 * @return The same copy of the back/forward list used to save the state. If 1233 * saveState fails, the returned list will be null. 1234 * @see #savePicture 1235 * @see #restorePicture 1236 */ 1237 public WebBackForwardList saveState(Bundle outState) { 1238 if (outState == null) { 1239 return null; 1240 } 1241 // We grab a copy of the back/forward list because a client of WebView 1242 // may have invalidated the history list by calling clearHistory. 1243 WebBackForwardList list = copyBackForwardList(); 1244 final int currentIndex = list.getCurrentIndex(); 1245 final int size = list.getSize(); 1246 // We should fail saving the state if the list is empty or the index is 1247 // not in a valid range. 1248 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1249 return null; 1250 } 1251 outState.putInt("index", currentIndex); 1252 // FIXME: This should just be a byte[][] instead of ArrayList but 1253 // Parcel.java does not have the code to handle multi-dimensional 1254 // arrays. 1255 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1256 for (int i = 0; i < size; i++) { 1257 WebHistoryItem item = list.getItemAtIndex(i); 1258 if (null == item) { 1259 // FIXME: this shouldn't happen 1260 // need to determine how item got set to null 1261 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1262 return null; 1263 } 1264 byte[] data = item.getFlattenedData(); 1265 if (data == null) { 1266 // It would be very odd to not have any data for a given history 1267 // item. And we will fail to rebuild the history list without 1268 // flattened data. 1269 return null; 1270 } 1271 history.add(data); 1272 } 1273 outState.putSerializable("history", history); 1274 if (mCertificate != null) { 1275 outState.putBundle("certificate", 1276 SslCertificate.saveState(mCertificate)); 1277 } 1278 return list; 1279 } 1280 1281 /** 1282 * Save the current display data to the Bundle given. Used in conjunction 1283 * with {@link #saveState}. 1284 * @param b A Bundle to store the display data. 1285 * @param dest The file to store the serialized picture data. Will be 1286 * overwritten with this WebView's picture data. 1287 * @return True if the picture was successfully saved. 1288 */ 1289 public boolean savePicture(Bundle b, final File dest) { 1290 if (dest == null || b == null) { 1291 return false; 1292 } 1293 final Picture p = capturePicture(); 1294 // Use a temporary file while writing to ensure the destination file 1295 // contains valid data. 1296 final File temp = new File(dest.getPath() + ".writing"); 1297 new Thread(new Runnable() { 1298 public void run() { 1299 try { 1300 FileOutputStream out = new FileOutputStream(temp); 1301 p.writeToStream(out); 1302 out.close(); 1303 // Writing the picture succeeded, rename the temporary file 1304 // to the destination. 1305 temp.renameTo(dest); 1306 } catch (Exception e) { 1307 // too late to do anything about it. 1308 } finally { 1309 temp.delete(); 1310 } 1311 } 1312 }).start(); 1313 // now update the bundle 1314 b.putInt("scrollX", mScrollX); 1315 b.putInt("scrollY", mScrollY); 1316 b.putFloat("scale", mActualScale); 1317 b.putFloat("textwrapScale", mTextWrapScale); 1318 b.putBoolean("overview", mInZoomOverview); 1319 return true; 1320 } 1321 1322 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1323 int sx = b.getInt("scrollX", 0); 1324 int sy = b.getInt("scrollY", 0); 1325 float scale = b.getFloat("scale", 1.0f); 1326 mDrawHistory = true; 1327 mHistoryPicture = p; 1328 mScrollX = sx; 1329 mScrollY = sy; 1330 mHistoryWidth = Math.round(p.getWidth() * scale); 1331 mHistoryHeight = Math.round(p.getHeight() * scale); 1332 // as getWidth() / getHeight() of the view are not available yet, set up 1333 // mActualScale, so that when onSizeChanged() is called, the rest will 1334 // be set correctly 1335 mActualScale = scale; 1336 mInvActualScale = 1 / scale; 1337 mTextWrapScale = b.getFloat("textwrapScale", scale); 1338 mInZoomOverview = b.getBoolean("overview"); 1339 invalidate(); 1340 } 1341 1342 /** 1343 * Restore the display data that was save in {@link #savePicture}. Used in 1344 * conjunction with {@link #restoreState}. 1345 * @param b A Bundle containing the saved display data. 1346 * @param src The file where the picture data was stored. 1347 * @return True if the picture was successfully restored. 1348 */ 1349 public boolean restorePicture(Bundle b, File src) { 1350 if (src == null || b == null) { 1351 return false; 1352 } 1353 if (!src.exists()) { 1354 return false; 1355 } 1356 try { 1357 final FileInputStream in = new FileInputStream(src); 1358 final Bundle copy = new Bundle(b); 1359 new Thread(new Runnable() { 1360 public void run() { 1361 final Picture p = Picture.createFromStream(in); 1362 if (p != null) { 1363 // Post a runnable on the main thread to update the 1364 // history picture fields. 1365 mPrivateHandler.post(new Runnable() { 1366 public void run() { 1367 restoreHistoryPictureFields(p, copy); 1368 } 1369 }); 1370 } 1371 try { 1372 in.close(); 1373 } catch (Exception e) { 1374 // Nothing we can do now. 1375 } 1376 } 1377 }).start(); 1378 } catch (FileNotFoundException e){ 1379 e.printStackTrace(); 1380 } 1381 return true; 1382 } 1383 1384 /** 1385 * Restore the state of this WebView from the given map used in 1386 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1387 * be called to restore the state of the WebView before using the object. If 1388 * it is called after the WebView has had a chance to build state (load 1389 * pages, create a back/forward list, etc.) there may be undesirable 1390 * side-effects. Please note that this method no longer restores the 1391 * display data for this WebView. See {@link #savePicture} and {@link 1392 * #restorePicture} for saving and restoring the display data. 1393 * @param inState The incoming Bundle of state. 1394 * @return The restored back/forward list or null if restoreState failed. 1395 * @see #savePicture 1396 * @see #restorePicture 1397 */ 1398 public WebBackForwardList restoreState(Bundle inState) { 1399 WebBackForwardList returnList = null; 1400 if (inState == null) { 1401 return returnList; 1402 } 1403 if (inState.containsKey("index") && inState.containsKey("history")) { 1404 mCertificate = SslCertificate.restoreState( 1405 inState.getBundle("certificate")); 1406 1407 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1408 final int index = inState.getInt("index"); 1409 // We can't use a clone of the list because we need to modify the 1410 // shared copy, so synchronize instead to prevent concurrent 1411 // modifications. 1412 synchronized (list) { 1413 final List<byte[]> history = 1414 (List<byte[]>) inState.getSerializable("history"); 1415 final int size = history.size(); 1416 // Check the index bounds so we don't crash in native code while 1417 // restoring the history index. 1418 if (index < 0 || index >= size) { 1419 return null; 1420 } 1421 for (int i = 0; i < size; i++) { 1422 byte[] data = history.remove(0); 1423 if (data == null) { 1424 // If we somehow have null data, we cannot reconstruct 1425 // the item and thus our history list cannot be rebuilt. 1426 return null; 1427 } 1428 WebHistoryItem item = new WebHistoryItem(data); 1429 list.addHistoryItem(item); 1430 } 1431 // Grab the most recent copy to return to the caller. 1432 returnList = copyBackForwardList(); 1433 // Update the copy to have the correct index. 1434 returnList.setCurrentIndex(index); 1435 } 1436 // Remove all pending messages because we are restoring previous 1437 // state. 1438 mWebViewCore.removeMessages(); 1439 // Send a restore state message. 1440 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1441 } 1442 return returnList; 1443 } 1444 1445 /** 1446 * Load the given url with the extra headers. 1447 * @param url The url of the resource to load. 1448 * @param extraHeaders The extra headers sent with this url. This should not 1449 * include the common headers like "user-agent". If it does, it 1450 * will be replaced by the intrinsic value of the WebView. 1451 */ 1452 public void loadUrl(String url, Map<String, String> extraHeaders) { 1453 switchOutDrawHistory(); 1454 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1455 arg.mUrl = url; 1456 arg.mExtraHeaders = extraHeaders; 1457 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1458 clearTextEntry(false); 1459 } 1460 1461 /** 1462 * Load the given url. 1463 * @param url The url of the resource to load. 1464 */ 1465 public void loadUrl(String url) { 1466 if (url == null) { 1467 return; 1468 } 1469 loadUrl(url, null); 1470 } 1471 1472 /** 1473 * Load the url with postData using "POST" method into the WebView. If url 1474 * is not a network url, it will be loaded with {link 1475 * {@link #loadUrl(String)} instead. 1476 * 1477 * @param url The url of the resource to load. 1478 * @param postData The data will be passed to "POST" request. 1479 */ 1480 public void postUrl(String url, byte[] postData) { 1481 if (URLUtil.isNetworkUrl(url)) { 1482 switchOutDrawHistory(); 1483 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1484 arg.mUrl = url; 1485 arg.mPostData = postData; 1486 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1487 clearTextEntry(false); 1488 } else { 1489 loadUrl(url); 1490 } 1491 } 1492 1493 /** 1494 * Load the given data into the WebView. This will load the data into 1495 * WebView using the data: scheme. Content loaded through this mechanism 1496 * does not have the ability to load content from the network. 1497 * @param data A String of data in the given encoding. The date must 1498 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1499 * %27, %3f respectively. 1500 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1501 * @param encoding The encoding of the data. i.e. utf-8, base64 1502 */ 1503 public void loadData(String data, String mimeType, String encoding) { 1504 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1505 } 1506 1507 /** 1508 * Load the given data into the WebView, use the provided URL as the base 1509 * URL for the content. The base URL is the URL that represents the page 1510 * that is loaded through this interface. As such, it is used to resolve any 1511 * relative URLs. The historyUrl is used for the history entry. 1512 * <p> 1513 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1514 * files through "file:///android_asset/" for the sub resources is more 1515 * restricted. If you provide null or empty string as baseUrl, you won't be 1516 * able to access asset files. If the baseUrl is anything other than 1517 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1518 * sub resources. 1519 * 1520 * @param baseUrl Url to resolve relative paths with, if null defaults to 1521 * "about:blank" 1522 * @param data A String of data in the given encoding. 1523 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1524 * defaults to "text/html" 1525 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1526 * @param historyUrl URL to use as the history entry. Can be null. 1527 */ 1528 public void loadDataWithBaseURL(String baseUrl, String data, 1529 String mimeType, String encoding, String historyUrl) { 1530 1531 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1532 loadData(data, mimeType, encoding); 1533 return; 1534 } 1535 switchOutDrawHistory(); 1536 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1537 arg.mBaseUrl = baseUrl; 1538 arg.mData = data; 1539 arg.mMimeType = mimeType; 1540 arg.mEncoding = encoding; 1541 arg.mHistoryUrl = historyUrl; 1542 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1543 clearTextEntry(false); 1544 } 1545 1546 /** 1547 * Stop the current load. 1548 */ 1549 public void stopLoading() { 1550 // TODO: should we clear all the messages in the queue before sending 1551 // STOP_LOADING? 1552 switchOutDrawHistory(); 1553 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1554 } 1555 1556 /** 1557 * Reload the current url. 1558 */ 1559 public void reload() { 1560 clearTextEntry(false); 1561 switchOutDrawHistory(); 1562 mWebViewCore.sendMessage(EventHub.RELOAD); 1563 } 1564 1565 /** 1566 * Return true if this WebView has a back history item. 1567 * @return True iff this WebView has a back history item. 1568 */ 1569 public boolean canGoBack() { 1570 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1571 synchronized (l) { 1572 if (l.getClearPending()) { 1573 return false; 1574 } else { 1575 return l.getCurrentIndex() > 0; 1576 } 1577 } 1578 } 1579 1580 /** 1581 * Go back in the history of this WebView. 1582 */ 1583 public void goBack() { 1584 goBackOrForward(-1); 1585 } 1586 1587 /** 1588 * Return true if this WebView has a forward history item. 1589 * @return True iff this Webview has a forward history item. 1590 */ 1591 public boolean canGoForward() { 1592 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1593 synchronized (l) { 1594 if (l.getClearPending()) { 1595 return false; 1596 } else { 1597 return l.getCurrentIndex() < l.getSize() - 1; 1598 } 1599 } 1600 } 1601 1602 /** 1603 * Go forward in the history of this WebView. 1604 */ 1605 public void goForward() { 1606 goBackOrForward(1); 1607 } 1608 1609 /** 1610 * Return true if the page can go back or forward the given 1611 * number of steps. 1612 * @param steps The negative or positive number of steps to move the 1613 * history. 1614 */ 1615 public boolean canGoBackOrForward(int steps) { 1616 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1617 synchronized (l) { 1618 if (l.getClearPending()) { 1619 return false; 1620 } else { 1621 int newIndex = l.getCurrentIndex() + steps; 1622 return newIndex >= 0 && newIndex < l.getSize(); 1623 } 1624 } 1625 } 1626 1627 /** 1628 * Go to the history item that is the number of steps away from 1629 * the current item. Steps is negative if backward and positive 1630 * if forward. 1631 * @param steps The number of steps to take back or forward in the back 1632 * forward list. 1633 */ 1634 public void goBackOrForward(int steps) { 1635 goBackOrForward(steps, false); 1636 } 1637 1638 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1639 if (steps != 0) { 1640 clearTextEntry(false); 1641 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1642 ignoreSnapshot ? 1 : 0); 1643 } 1644 } 1645 1646 private boolean extendScroll(int y) { 1647 int finalY = mScroller.getFinalY(); 1648 int newY = pinLocY(finalY + y); 1649 if (newY == finalY) return false; 1650 mScroller.setFinalY(newY); 1651 mScroller.extendDuration(computeDuration(0, y)); 1652 return true; 1653 } 1654 1655 /** 1656 * Scroll the contents of the view up by half the view size 1657 * @param top true to jump to the top of the page 1658 * @return true if the page was scrolled 1659 */ 1660 public boolean pageUp(boolean top) { 1661 if (mNativeClass == 0) { 1662 return false; 1663 } 1664 nativeClearCursor(); // start next trackball movement from page edge 1665 if (top) { 1666 // go to the top of the document 1667 return pinScrollTo(mScrollX, 0, true, 0); 1668 } 1669 // Page up 1670 int h = getHeight(); 1671 int y; 1672 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1673 y = -h + PAGE_SCROLL_OVERLAP; 1674 } else { 1675 y = -h / 2; 1676 } 1677 mUserScroll = true; 1678 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1679 : extendScroll(y); 1680 } 1681 1682 /** 1683 * Scroll the contents of the view down by half the page size 1684 * @param bottom true to jump to bottom of page 1685 * @return true if the page was scrolled 1686 */ 1687 public boolean pageDown(boolean bottom) { 1688 if (mNativeClass == 0) { 1689 return false; 1690 } 1691 nativeClearCursor(); // start next trackball movement from page edge 1692 if (bottom) { 1693 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1694 } 1695 // Page down. 1696 int h = getHeight(); 1697 int y; 1698 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1699 y = h - PAGE_SCROLL_OVERLAP; 1700 } else { 1701 y = h / 2; 1702 } 1703 mUserScroll = true; 1704 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1705 : extendScroll(y); 1706 } 1707 1708 /** 1709 * Clear the view so that onDraw() will draw nothing but white background, 1710 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1711 */ 1712 public void clearView() { 1713 mContentWidth = 0; 1714 mContentHeight = 0; 1715 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1716 } 1717 1718 /** 1719 * Return a new picture that captures the current display of the webview. 1720 * This is a copy of the display, and will be unaffected if the webview 1721 * later loads a different URL. 1722 * 1723 * @return a picture containing the current contents of the view. Note this 1724 * picture is of the entire document, and is not restricted to the 1725 * bounds of the view. 1726 */ 1727 public Picture capturePicture() { 1728 if (null == mWebViewCore) return null; // check for out of memory tab 1729 return mWebViewCore.copyContentPicture(); 1730 } 1731 1732 /** 1733 * Return true if the browser is displaying a TextView for text input. 1734 */ 1735 private boolean inEditingMode() { 1736 return mWebTextView != null && mWebTextView.getParent() != null; 1737 } 1738 1739 /** 1740 * Remove the WebTextView. 1741 * @param disableFocusController If true, send a message to webkit 1742 * disabling the focus controller, so the caret stops blinking. 1743 */ 1744 private void clearTextEntry(boolean disableFocusController) { 1745 if (inEditingMode()) { 1746 mWebTextView.remove(); 1747 if (disableFocusController) { 1748 setFocusControllerInactive(); 1749 } 1750 } 1751 } 1752 1753 /** 1754 * Return the current scale of the WebView 1755 * @return The current scale. 1756 */ 1757 public float getScale() { 1758 return mActualScale; 1759 } 1760 1761 /** 1762 * Set the initial scale for the WebView. 0 means default. If 1763 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1764 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1765 * WebView starts will this value as initial scale. 1766 * 1767 * @param scaleInPercent The initial scale in percent. 1768 */ 1769 public void setInitialScale(int scaleInPercent) { 1770 mInitialScaleInPercent = scaleInPercent; 1771 } 1772 1773 /** 1774 * Invoke the graphical zoom picker widget for this WebView. This will 1775 * result in the zoom widget appearing on the screen to control the zoom 1776 * level of this WebView. 1777 */ 1778 public void invokeZoomPicker() { 1779 if (!getSettings().supportZoom()) { 1780 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1781 return; 1782 } 1783 clearTextEntry(false); 1784 if (getSettings().getBuiltInZoomControls()) { 1785 getZoomButtonsController().setVisible(true); 1786 } else { 1787 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1788 mPrivateHandler.postDelayed(mZoomControlRunnable, 1789 ZOOM_CONTROLS_TIMEOUT); 1790 } 1791 } 1792 1793 /** 1794 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1795 * is found and the anchor has a non-javascript url, the HitTestResult type 1796 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1797 * anchor does not have a url or if it is a javascript url, the type will 1798 * be UNKNOWN_TYPE and the url has to be retrieved through 1799 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1800 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1801 * the "extra" field. A type of 1802 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1803 * a child node. If a phone number is found, the HitTestResult type is set 1804 * to PHONE_TYPE and the phone number is set in the "extra" field of 1805 * HitTestResult. If a map address is found, the HitTestResult type is set 1806 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1807 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1808 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1809 * HitTestResult type is set to UNKNOWN_TYPE. 1810 */ 1811 public HitTestResult getHitTestResult() { 1812 if (mNativeClass == 0) { 1813 return null; 1814 } 1815 1816 HitTestResult result = new HitTestResult(); 1817 if (nativeHasCursorNode()) { 1818 if (nativeCursorIsTextInput()) { 1819 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1820 } else { 1821 String text = nativeCursorText(); 1822 if (text != null) { 1823 if (text.startsWith(SCHEME_TEL)) { 1824 result.setType(HitTestResult.PHONE_TYPE); 1825 result.setExtra(text.substring(SCHEME_TEL.length())); 1826 } else if (text.startsWith(SCHEME_MAILTO)) { 1827 result.setType(HitTestResult.EMAIL_TYPE); 1828 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1829 } else if (text.startsWith(SCHEME_GEO)) { 1830 result.setType(HitTestResult.GEO_TYPE); 1831 result.setExtra(URLDecoder.decode(text 1832 .substring(SCHEME_GEO.length()))); 1833 } else if (nativeCursorIsAnchor()) { 1834 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1835 result.setExtra(text); 1836 } 1837 } 1838 } 1839 } 1840 int type = result.getType(); 1841 if (type == HitTestResult.UNKNOWN_TYPE 1842 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1843 // Now check to see if it is an image. 1844 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1845 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1846 String text = nativeImageURI(contentX, contentY); 1847 if (text != null) { 1848 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1849 HitTestResult.IMAGE_TYPE : 1850 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1851 result.setExtra(text); 1852 } 1853 } 1854 return result; 1855 } 1856 1857 // Called by JNI when the DOM has changed the focus. Clear the focus so 1858 // that new keys will go to the newly focused field 1859 private void domChangedFocus() { 1860 if (inEditingMode()) { 1861 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 1862 } 1863 } 1864 /** 1865 * Request the href of an anchor element due to getFocusNodePath returning 1866 * "href." If hrefMsg is null, this method returns immediately and does not 1867 * dispatch hrefMsg to its target. 1868 * 1869 * @param hrefMsg This message will be dispatched with the result of the 1870 * request as the data member with "url" as key. The result can 1871 * be null. 1872 */ 1873 // FIXME: API change required to change the name of this function. We now 1874 // look at the cursor node, and not the focus node. Also, what is 1875 // getFocusNodePath? 1876 public void requestFocusNodeHref(Message hrefMsg) { 1877 if (hrefMsg == null || mNativeClass == 0) { 1878 return; 1879 } 1880 if (nativeCursorIsAnchor()) { 1881 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1882 nativeCursorFramePointer(), nativeCursorNodePointer(), 1883 hrefMsg); 1884 } 1885 } 1886 1887 /** 1888 * Request the url of the image last touched by the user. msg will be sent 1889 * to its target with a String representing the url as its object. 1890 * 1891 * @param msg This message will be dispatched with the result of the request 1892 * as the data member with "url" as key. The result can be null. 1893 */ 1894 public void requestImageRef(Message msg) { 1895 if (0 == mNativeClass) return; // client isn't initialized 1896 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1897 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1898 String ref = nativeImageURI(contentX, contentY); 1899 Bundle data = msg.getData(); 1900 data.putString("url", ref); 1901 msg.setData(data); 1902 msg.sendToTarget(); 1903 } 1904 1905 private static int pinLoc(int x, int viewMax, int docMax) { 1906// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1907 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1908 // pin the short document to the top/left of the screen 1909 x = 0; 1910// Log.d(LOGTAG, "--- center " + x); 1911 } else if (x < 0) { 1912 x = 0; 1913// Log.d(LOGTAG, "--- zero"); 1914 } else if (x + viewMax > docMax) { 1915 x = docMax - viewMax; 1916// Log.d(LOGTAG, "--- pin " + x); 1917 } 1918 return x; 1919 } 1920 1921 // Expects x in view coordinates 1922 private int pinLocX(int x) { 1923 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1924 } 1925 1926 // Expects y in view coordinates 1927 private int pinLocY(int y) { 1928 return pinLoc(y, getViewHeightWithTitle(), 1929 computeVerticalScrollRange() + getTitleHeight()); 1930 } 1931 1932 /** 1933 * A title bar which is embedded in this WebView, and scrolls along with it 1934 * vertically, but not horizontally. 1935 */ 1936 private View mTitleBar; 1937 1938 /** 1939 * Since we draw the title bar ourselves, we removed the shadow from the 1940 * browser's activity. We do want a shadow at the bottom of the title bar, 1941 * or at the top of the screen if the title bar is not visible. This 1942 * drawable serves that purpose. 1943 */ 1944 private Drawable mTitleShadow; 1945 1946 /** 1947 * Add or remove a title bar to be embedded into the WebView, and scroll 1948 * along with it vertically, while remaining in view horizontally. Pass 1949 * null to remove the title bar from the WebView, and return to drawing 1950 * the WebView normally without translating to account for the title bar. 1951 * @hide 1952 */ 1953 public void setEmbeddedTitleBar(View v) { 1954 if (mTitleBar == v) return; 1955 if (mTitleBar != null) { 1956 removeView(mTitleBar); 1957 } 1958 if (null != v) { 1959 addView(v, new AbsoluteLayout.LayoutParams( 1960 ViewGroup.LayoutParams.MATCH_PARENT, 1961 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1962 if (mTitleShadow == null) { 1963 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1964 com.android.internal.R.drawable.title_bar_shadow); 1965 } 1966 } 1967 mTitleBar = v; 1968 } 1969 1970 /** 1971 * Given a distance in view space, convert it to content space. Note: this 1972 * does not reflect translation, just scaling, so this should not be called 1973 * with coordinates, but should be called for dimensions like width or 1974 * height. 1975 */ 1976 private int viewToContentDimension(int d) { 1977 return Math.round(d * mInvActualScale); 1978 } 1979 1980 /** 1981 * Given an x coordinate in view space, convert it to content space. Also 1982 * may be used for absolute heights (such as for the WebTextView's 1983 * textSize, which is unaffected by the height of the title bar). 1984 */ 1985 /*package*/ int viewToContentX(int x) { 1986 return viewToContentDimension(x); 1987 } 1988 1989 /** 1990 * Given a y coordinate in view space, convert it to content space. 1991 * Takes into account the height of the title bar if there is one 1992 * embedded into the WebView. 1993 */ 1994 /*package*/ int viewToContentY(int y) { 1995 return viewToContentDimension(y - getTitleHeight()); 1996 } 1997 1998 /** 1999 * Given a distance in content space, convert it to view space. Note: this 2000 * does not reflect translation, just scaling, so this should not be called 2001 * with coordinates, but should be called for dimensions like width or 2002 * height. 2003 */ 2004 /*package*/ int contentToViewDimension(int d) { 2005 return Math.round(d * mActualScale); 2006 } 2007 2008 /** 2009 * Given an x coordinate in content space, convert it to view 2010 * space. 2011 */ 2012 /*package*/ int contentToViewX(int x) { 2013 return contentToViewDimension(x); 2014 } 2015 2016 /** 2017 * Given a y coordinate in content space, convert it to view 2018 * space. Takes into account the height of the title bar. 2019 */ 2020 /*package*/ int contentToViewY(int y) { 2021 return contentToViewDimension(y) + getTitleHeight(); 2022 } 2023 2024 private Rect contentToViewRect(Rect x) { 2025 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2026 contentToViewX(x.right), contentToViewY(x.bottom)); 2027 } 2028 2029 /* To invalidate a rectangle in content coordinates, we need to transform 2030 the rect into view coordinates, so we can then call invalidate(...). 2031 2032 Normally, we would just call contentToView[XY](...), which eventually 2033 calls Math.round(coordinate * mActualScale). However, for invalidates, 2034 we need to account for the slop that occurs with antialiasing. To 2035 address that, we are a little more liberal in the size of the rect that 2036 we invalidate. 2037 2038 This liberal calculation calls floor() for the top/left, and ceil() for 2039 the bottom/right coordinates. This catches the possible extra pixels of 2040 antialiasing that we might have missed with just round(). 2041 */ 2042 2043 // Called by JNI to invalidate the View, given rectangle coordinates in 2044 // content space 2045 private void viewInvalidate(int l, int t, int r, int b) { 2046 final float scale = mActualScale; 2047 final int dy = getTitleHeight(); 2048 invalidate((int)Math.floor(l * scale), 2049 (int)Math.floor(t * scale) + dy, 2050 (int)Math.ceil(r * scale), 2051 (int)Math.ceil(b * scale) + dy); 2052 } 2053 2054 // Called by JNI to invalidate the View after a delay, given rectangle 2055 // coordinates in content space 2056 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2057 final float scale = mActualScale; 2058 final int dy = getTitleHeight(); 2059 postInvalidateDelayed(delay, 2060 (int)Math.floor(l * scale), 2061 (int)Math.floor(t * scale) + dy, 2062 (int)Math.ceil(r * scale), 2063 (int)Math.ceil(b * scale) + dy); 2064 } 2065 2066 private void invalidateContentRect(Rect r) { 2067 viewInvalidate(r.left, r.top, r.right, r.bottom); 2068 } 2069 2070 // stop the scroll animation, and don't let a subsequent fling add 2071 // to the existing velocity 2072 private void abortAnimation() { 2073 mScroller.abortAnimation(); 2074 mLastVelocity = 0; 2075 } 2076 2077 /* call from webcoreview.draw(), so we're still executing in the UI thread 2078 */ 2079 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2080 2081 // premature data from webkit, ignore 2082 if ((w | h) == 0) { 2083 return; 2084 } 2085 2086 // don't abort a scroll animation if we didn't change anything 2087 if (mContentWidth != w || mContentHeight != h) { 2088 // record new dimensions 2089 mContentWidth = w; 2090 mContentHeight = h; 2091 // If history Picture is drawn, don't update scroll. They will be 2092 // updated when we get out of that mode. 2093 if (!mDrawHistory) { 2094 // repin our scroll, taking into account the new content size 2095 int oldX = mScrollX; 2096 int oldY = mScrollY; 2097 mScrollX = pinLocX(mScrollX); 2098 mScrollY = pinLocY(mScrollY); 2099 if (oldX != mScrollX || oldY != mScrollY) { 2100 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2101 } 2102 if (!mScroller.isFinished()) { 2103 // We are in the middle of a scroll. Repin the final scroll 2104 // position. 2105 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2106 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2107 } 2108 } 2109 } 2110 contentSizeChanged(updateLayout); 2111 } 2112 2113 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 2114 boolean force) { 2115 if (scale < mMinZoomScale) { 2116 scale = mMinZoomScale; 2117 // set mInZoomOverview for non mobile sites 2118 if (scale < mDefaultScale) mInZoomOverview = true; 2119 } else if (scale > mMaxZoomScale) { 2120 scale = mMaxZoomScale; 2121 } 2122 if (updateTextWrapScale) { 2123 mTextWrapScale = scale; 2124 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 2125 mLastHeightSent = 0; 2126 } 2127 if (scale != mActualScale || force) { 2128 if (mDrawHistory) { 2129 // If history Picture is drawn, don't update scroll. They will 2130 // be updated when we get out of that mode. 2131 if (scale != mActualScale && !mPreviewZoomOnly) { 2132 mCallbackProxy.onScaleChanged(mActualScale, scale); 2133 } 2134 mActualScale = scale; 2135 mInvActualScale = 1 / scale; 2136 sendViewSizeZoom(); 2137 } else { 2138 // update our scroll so we don't appear to jump 2139 // i.e. keep the center of the doc in the center of the view 2140 2141 int oldX = mScrollX; 2142 int oldY = mScrollY; 2143 float ratio = scale * mInvActualScale; // old inverse 2144 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2145 float sy = ratio * oldY + (ratio - 1) 2146 * (mZoomCenterY - getTitleHeight()); 2147 2148 // now update our new scale and inverse 2149 if (scale != mActualScale && !mPreviewZoomOnly) { 2150 mCallbackProxy.onScaleChanged(mActualScale, scale); 2151 } 2152 mActualScale = scale; 2153 mInvActualScale = 1 / scale; 2154 2155 // Scale all the child views 2156 mViewManager.scaleAll(); 2157 2158 // as we don't have animation for scaling, don't do animation 2159 // for scrolling, as it causes weird intermediate state 2160 // pinScrollTo(Math.round(sx), Math.round(sy)); 2161 mScrollX = pinLocX(Math.round(sx)); 2162 mScrollY = pinLocY(Math.round(sy)); 2163 2164 // update webkit 2165 if (oldX != mScrollX || oldY != mScrollY) { 2166 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2167 } else { 2168 // the scroll position is adjusted at the beginning of the 2169 // zoom animation. But we want to update the WebKit at the 2170 // end of the zoom animation. See comments in onScaleEnd(). 2171 sendOurVisibleRect(); 2172 } 2173 sendViewSizeZoom(); 2174 } 2175 } 2176 } 2177 2178 // Used to avoid sending many visible rect messages. 2179 private Rect mLastVisibleRectSent; 2180 private Rect mLastGlobalRect; 2181 2182 private Rect sendOurVisibleRect() { 2183 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2184 2185 Rect rect = new Rect(); 2186 calcOurContentVisibleRect(rect); 2187 // Rect.equals() checks for null input. 2188 if (!rect.equals(mLastVisibleRectSent)) { 2189 Point pos = new Point(rect.left, rect.top); 2190 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2191 nativeMoveGeneration(), 0, pos); 2192 mLastVisibleRectSent = rect; 2193 } 2194 Rect globalRect = new Rect(); 2195 if (getGlobalVisibleRect(globalRect) 2196 && !globalRect.equals(mLastGlobalRect)) { 2197 if (DebugFlags.WEB_VIEW) { 2198 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2199 + globalRect.top + ",r=" + globalRect.right + ",b=" 2200 + globalRect.bottom); 2201 } 2202 // TODO: the global offset is only used by windowRect() 2203 // in ChromeClientAndroid ; other clients such as touch 2204 // and mouse events could return view + screen relative points. 2205 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2206 mLastGlobalRect = globalRect; 2207 } 2208 return rect; 2209 } 2210 2211 // Sets r to be the visible rectangle of our webview in view coordinates 2212 private void calcOurVisibleRect(Rect r) { 2213 Point p = new Point(); 2214 getGlobalVisibleRect(r, p); 2215 r.offset(-p.x, -p.y); 2216 if (mFindIsUp) { 2217 r.bottom -= mFindHeight; 2218 } 2219 } 2220 2221 // Sets r to be our visible rectangle in content coordinates 2222 private void calcOurContentVisibleRect(Rect r) { 2223 calcOurVisibleRect(r); 2224 // pin the rect to the bounds of the content 2225 r.left = Math.max(viewToContentX(r.left), 0); 2226 // viewToContentY will remove the total height of the title bar. Add 2227 // the visible height back in to account for the fact that if the title 2228 // bar is partially visible, the part of the visible rect which is 2229 // displaying our content is displaced by that amount. 2230 r.top = Math.max(viewToContentY(r.top + getVisibleTitleHeight()), 0); 2231 r.right = Math.min(viewToContentX(r.right), mContentWidth); 2232 r.bottom = Math.min(viewToContentY(r.bottom), mContentHeight); 2233 } 2234 2235 static class ViewSizeData { 2236 int mWidth; 2237 int mHeight; 2238 int mTextWrapWidth; 2239 int mAnchorX; 2240 int mAnchorY; 2241 float mScale; 2242 boolean mIgnoreHeight; 2243 } 2244 2245 /** 2246 * Compute unzoomed width and height, and if they differ from the last 2247 * values we sent, send them to webkit (to be used has new viewport) 2248 * 2249 * @return true if new values were sent 2250 */ 2251 private boolean sendViewSizeZoom() { 2252 if (mPreviewZoomOnly) return false; 2253 2254 int viewWidth = getViewWidth(); 2255 int newWidth = Math.round(viewWidth * mInvActualScale); 2256 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2257 /* 2258 * Because the native side may have already done a layout before the 2259 * View system was able to measure us, we have to send a height of 0 to 2260 * remove excess whitespace when we grow our width. This will trigger a 2261 * layout and a change in content size. This content size change will 2262 * mean that contentSizeChanged will either call this method directly or 2263 * indirectly from onSizeChanged. 2264 */ 2265 if (newWidth > mLastWidthSent && mWrapContent) { 2266 newHeight = 0; 2267 } 2268 // Avoid sending another message if the dimensions have not changed. 2269 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2270 ViewSizeData data = new ViewSizeData(); 2271 data.mWidth = newWidth; 2272 data.mHeight = newHeight; 2273 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2274 data.mScale = mActualScale; 2275 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2276 data.mAnchorX = mAnchorX; 2277 data.mAnchorY = mAnchorY; 2278 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2279 mLastWidthSent = newWidth; 2280 mLastHeightSent = newHeight; 2281 mAnchorX = mAnchorY = 0; 2282 return true; 2283 } 2284 return false; 2285 } 2286 2287 @Override 2288 protected int computeHorizontalScrollRange() { 2289 if (mDrawHistory) { 2290 return mHistoryWidth; 2291 } else if (mHorizontalScrollBarMode == SCROLLBAR_ALWAYSOFF) { 2292 return computeHorizontalScrollExtent(); 2293 } else { 2294 // to avoid rounding error caused unnecessary scrollbar, use floor 2295 return (int) Math.floor(mContentWidth * mActualScale); 2296 } 2297 } 2298 2299 @Override 2300 protected int computeVerticalScrollRange() { 2301 if (mDrawHistory) { 2302 return mHistoryHeight; 2303 } else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF) { 2304 return computeVerticalScrollExtent(); 2305 } else { 2306 // to avoid rounding error caused unnecessary scrollbar, use floor 2307 return (int) Math.floor(mContentHeight * mActualScale); 2308 } 2309 } 2310 2311 @Override 2312 protected int computeVerticalScrollOffset() { 2313 return Math.max(mScrollY - getTitleHeight(), 0); 2314 } 2315 2316 @Override 2317 protected int computeVerticalScrollExtent() { 2318 return getViewHeight(); 2319 } 2320 2321 /** @hide */ 2322 @Override 2323 protected void onDrawVerticalScrollBar(Canvas canvas, 2324 Drawable scrollBar, 2325 int l, int t, int r, int b) { 2326 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2327 scrollBar.draw(canvas); 2328 } 2329 2330 /** 2331 * Get the url for the current page. This is not always the same as the url 2332 * passed to WebViewClient.onPageStarted because although the load for 2333 * that url has begun, the current page may not have changed. 2334 * @return The url for the current page. 2335 */ 2336 public String getUrl() { 2337 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2338 return h != null ? h.getUrl() : null; 2339 } 2340 2341 /** 2342 * Get the original url for the current page. This is not always the same 2343 * as the url passed to WebViewClient.onPageStarted because although the 2344 * load for that url has begun, the current page may not have changed. 2345 * Also, there may have been redirects resulting in a different url to that 2346 * originally requested. 2347 * @return The url that was originally requested for the current page. 2348 */ 2349 public String getOriginalUrl() { 2350 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2351 return h != null ? h.getOriginalUrl() : null; 2352 } 2353 2354 /** 2355 * Get the title for the current page. This is the title of the current page 2356 * until WebViewClient.onReceivedTitle is called. 2357 * @return The title for the current page. 2358 */ 2359 public String getTitle() { 2360 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2361 return h != null ? h.getTitle() : null; 2362 } 2363 2364 /** 2365 * Get the favicon for the current page. This is the favicon of the current 2366 * page until WebViewClient.onReceivedIcon is called. 2367 * @return The favicon for the current page. 2368 */ 2369 public Bitmap getFavicon() { 2370 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2371 return h != null ? h.getFavicon() : null; 2372 } 2373 2374 /** 2375 * Get the touch icon url for the apple-touch-icon <link> element. 2376 * @hide 2377 */ 2378 public String getTouchIconUrl() { 2379 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2380 return h != null ? h.getTouchIconUrl() : null; 2381 } 2382 2383 /** 2384 * Get the progress for the current page. 2385 * @return The progress for the current page between 0 and 100. 2386 */ 2387 public int getProgress() { 2388 return mCallbackProxy.getProgress(); 2389 } 2390 2391 /** 2392 * @return the height of the HTML content. 2393 */ 2394 public int getContentHeight() { 2395 return mContentHeight; 2396 } 2397 2398 /** 2399 * @return the width of the HTML content. 2400 * @hide 2401 */ 2402 public int getContentWidth() { 2403 return mContentWidth; 2404 } 2405 2406 /** 2407 * Pause all layout, parsing, and javascript timers for all webviews. This 2408 * is a global requests, not restricted to just this webview. This can be 2409 * useful if the application has been paused. 2410 */ 2411 public void pauseTimers() { 2412 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2413 } 2414 2415 /** 2416 * Resume all layout, parsing, and javascript timers for all webviews. 2417 * This will resume dispatching all timers. 2418 */ 2419 public void resumeTimers() { 2420 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2421 } 2422 2423 /** 2424 * Call this to pause any extra processing associated with this view and 2425 * its associated DOM/plugins/javascript/etc. For example, if the view is 2426 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2427 * network traffic. When the view is again "active", call onResume(). 2428 * 2429 * Note that this differs from pauseTimers(), which affects all views/DOMs 2430 * @hide 2431 */ 2432 public void onPause() { 2433 if (!mIsPaused) { 2434 mIsPaused = true; 2435 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2436 } 2437 } 2438 2439 /** 2440 * Call this to balanace a previous call to onPause() 2441 * @hide 2442 */ 2443 public void onResume() { 2444 if (mIsPaused) { 2445 mIsPaused = false; 2446 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2447 } 2448 } 2449 2450 /** 2451 * Returns true if the view is paused, meaning onPause() was called. Calling 2452 * onResume() sets the paused state back to false. 2453 * @hide 2454 */ 2455 public boolean isPaused() { 2456 return mIsPaused; 2457 } 2458 2459 /** 2460 * Call this to inform the view that memory is low so that it can 2461 * free any available memory. 2462 */ 2463 public void freeMemory() { 2464 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2465 } 2466 2467 /** 2468 * Clear the resource cache. Note that the cache is per-application, so 2469 * this will clear the cache for all WebViews used. 2470 * 2471 * @param includeDiskFiles If false, only the RAM cache is cleared. 2472 */ 2473 public void clearCache(boolean includeDiskFiles) { 2474 // Note: this really needs to be a static method as it clears cache for all 2475 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2476 // we can't make this static. 2477 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2478 includeDiskFiles ? 1 : 0, 0); 2479 } 2480 2481 /** 2482 * Make sure that clearing the form data removes the adapter from the 2483 * currently focused textfield if there is one. 2484 */ 2485 public void clearFormData() { 2486 if (inEditingMode()) { 2487 AutoCompleteAdapter adapter = null; 2488 mWebTextView.setAdapterCustom(adapter); 2489 } 2490 } 2491 2492 /** 2493 * Tell the WebView to clear its internal back/forward list. 2494 */ 2495 public void clearHistory() { 2496 mCallbackProxy.getBackForwardList().setClearPending(); 2497 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2498 } 2499 2500 /** 2501 * Clear the SSL preferences table stored in response to proceeding with SSL 2502 * certificate errors. 2503 */ 2504 public void clearSslPreferences() { 2505 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2506 } 2507 2508 /** 2509 * Return the WebBackForwardList for this WebView. This contains the 2510 * back/forward list for use in querying each item in the history stack. 2511 * This is a copy of the private WebBackForwardList so it contains only a 2512 * snapshot of the current state. Multiple calls to this method may return 2513 * different objects. The object returned from this method will not be 2514 * updated to reflect any new state. 2515 */ 2516 public WebBackForwardList copyBackForwardList() { 2517 return mCallbackProxy.getBackForwardList().clone(); 2518 } 2519 2520 /* 2521 * Highlight and scroll to the next occurance of String in findAll. 2522 * Wraps the page infinitely, and scrolls. Must be called after 2523 * calling findAll. 2524 * 2525 * @param forward Direction to search. 2526 */ 2527 public void findNext(boolean forward) { 2528 if (0 == mNativeClass) return; // client isn't initialized 2529 nativeFindNext(forward); 2530 } 2531 2532 /* 2533 * Find all instances of find on the page and highlight them. 2534 * @param find String to find. 2535 * @return int The number of occurances of the String "find" 2536 * that were found. 2537 */ 2538 public int findAll(String find) { 2539 if (0 == mNativeClass) return 0; // client isn't initialized 2540 int result = find != null ? nativeFindAll(find.toLowerCase(), 2541 find.toUpperCase()) : 0; 2542 invalidate(); 2543 mLastFind = find; 2544 return result; 2545 } 2546 2547 /** 2548 * @hide 2549 */ 2550 public void setFindIsUp(boolean isUp) { 2551 mFindIsUp = isUp; 2552 if (isUp) { 2553 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2554 false); 2555 } 2556 if (0 == mNativeClass) return; // client isn't initialized 2557 nativeSetFindIsUp(isUp); 2558 } 2559 2560 // Used to know whether the find dialog is open. Affects whether 2561 // or not we draw the highlights for matches. 2562 private boolean mFindIsUp; 2563 2564 private int mFindHeight; 2565 // Keep track of the last string sent, so we can search again after an 2566 // orientation change or the dismissal of the soft keyboard. 2567 private String mLastFind; 2568 2569 /** 2570 * Return the first substring consisting of the address of a physical 2571 * location. Currently, only addresses in the United States are detected, 2572 * and consist of: 2573 * - a house number 2574 * - a street name 2575 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2576 * - a city name 2577 * - a state or territory, either spelled out or two-letter abbr. 2578 * - an optional 5 digit or 9 digit zip code. 2579 * 2580 * All names must be correctly capitalized, and the zip code, if present, 2581 * must be valid for the state. The street type must be a standard USPS 2582 * spelling or abbreviation. The state or territory must also be spelled 2583 * or abbreviated using USPS standards. The house number may not exceed 2584 * five digits. 2585 * @param addr The string to search for addresses. 2586 * 2587 * @return the address, or if no address is found, return null. 2588 */ 2589 public static String findAddress(String addr) { 2590 return findAddress(addr, false); 2591 } 2592 2593 /** 2594 * @hide 2595 * Return the first substring consisting of the address of a physical 2596 * location. Currently, only addresses in the United States are detected, 2597 * and consist of: 2598 * - a house number 2599 * - a street name 2600 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2601 * - a city name 2602 * - a state or territory, either spelled out or two-letter abbr. 2603 * - an optional 5 digit or 9 digit zip code. 2604 * 2605 * Names are optionally capitalized, and the zip code, if present, 2606 * must be valid for the state. The street type must be a standard USPS 2607 * spelling or abbreviation. The state or territory must also be spelled 2608 * or abbreviated using USPS standards. The house number may not exceed 2609 * five digits. 2610 * @param addr The string to search for addresses. 2611 * @param caseInsensitive addr Set to true to make search ignore case. 2612 * 2613 * @return the address, or if no address is found, return null. 2614 */ 2615 public static String findAddress(String addr, boolean caseInsensitive) { 2616 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2617 } 2618 2619 /* 2620 * Clear the highlighting surrounding text matches created by findAll. 2621 */ 2622 public void clearMatches() { 2623 mLastFind = ""; 2624 if (mNativeClass == 0) 2625 return; 2626 nativeSetFindIsEmpty(); 2627 invalidate(); 2628 } 2629 2630 /** 2631 * @hide 2632 */ 2633 public void notifyFindDialogDismissed() { 2634 if (mWebViewCore == null) { 2635 return; 2636 } 2637 clearMatches(); 2638 setFindIsUp(false); 2639 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2640 false); 2641 // Now that the dialog has been removed, ensure that we scroll to a 2642 // location that is not beyond the end of the page. 2643 pinScrollTo(mScrollX, mScrollY, false, 0); 2644 invalidate(); 2645 } 2646 2647 /** 2648 * @hide 2649 */ 2650 public void setFindDialogHeight(int height) { 2651 if (DebugFlags.WEB_VIEW) { 2652 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2653 } 2654 mFindHeight = height; 2655 } 2656 2657 /** 2658 * Query the document to see if it contains any image references. The 2659 * message object will be dispatched with arg1 being set to 1 if images 2660 * were found and 0 if the document does not reference any images. 2661 * @param response The message that will be dispatched with the result. 2662 */ 2663 public void documentHasImages(Message response) { 2664 if (response == null) { 2665 return; 2666 } 2667 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2668 } 2669 2670 @Override 2671 public void computeScroll() { 2672 if (mScroller.computeScrollOffset()) { 2673 int oldX = mScrollX; 2674 int oldY = mScrollY; 2675 mScrollX = mScroller.getCurrX(); 2676 mScrollY = mScroller.getCurrY(); 2677 postInvalidate(); // So we draw again 2678 if (oldX != mScrollX || oldY != mScrollY) { 2679 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2680 } 2681 } else { 2682 super.computeScroll(); 2683 } 2684 } 2685 2686 private static int computeDuration(int dx, int dy) { 2687 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2688 int duration = distance * 1000 / STD_SPEED; 2689 return Math.min(duration, MAX_DURATION); 2690 } 2691 2692 // helper to pin the scrollBy parameters (already in view coordinates) 2693 // returns true if the scroll was changed 2694 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2695 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2696 } 2697 // helper to pin the scrollTo parameters (already in view coordinates) 2698 // returns true if the scroll was changed 2699 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2700 x = pinLocX(x); 2701 y = pinLocY(y); 2702 int dx = x - mScrollX; 2703 int dy = y - mScrollY; 2704 2705 if ((dx | dy) == 0) { 2706 return false; 2707 } 2708 if (animate) { 2709 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2710 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2711 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2712 awakenScrollBars(mScroller.getDuration()); 2713 invalidate(); 2714 } else { 2715 abortAnimation(); // just in case 2716 scrollTo(x, y); 2717 } 2718 return true; 2719 } 2720 2721 // Scale from content to view coordinates, and pin. 2722 // Also called by jni webview.cpp 2723 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2724 if (mDrawHistory) { 2725 // disallow WebView to change the scroll position as History Picture 2726 // is used in the view system. 2727 // TODO: as we switchOutDrawHistory when trackball or navigation 2728 // keys are hit, this should be safe. Right? 2729 return false; 2730 } 2731 cx = contentToViewDimension(cx); 2732 cy = contentToViewDimension(cy); 2733 if (mHeightCanMeasure) { 2734 // move our visible rect according to scroll request 2735 if (cy != 0) { 2736 Rect tempRect = new Rect(); 2737 calcOurVisibleRect(tempRect); 2738 tempRect.offset(cx, cy); 2739 requestRectangleOnScreen(tempRect); 2740 } 2741 // FIXME: We scroll horizontally no matter what because currently 2742 // ScrollView and ListView will not scroll horizontally. 2743 // FIXME: Why do we only scroll horizontally if there is no 2744 // vertical scroll? 2745// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2746 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2747 } else { 2748 return pinScrollBy(cx, cy, animate, 0); 2749 } 2750 } 2751 2752 /** 2753 * Called by CallbackProxy when the page finishes loading. 2754 * @param url The URL of the page which has finished loading. 2755 */ 2756 /* package */ void onPageFinished(String url) { 2757 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 2758 // If the user is now on a different page, or has scrolled the page 2759 // past the point where the title bar is offscreen, ignore the 2760 // scroll request. 2761 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 2762 && mScrollX == 0 && mScrollY == 0) { 2763 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 2764 SLIDE_TITLE_DURATION); 2765 } 2766 mPageThatNeedsToSlideTitleBarOffScreen = null; 2767 } 2768 } 2769 2770 /** 2771 * The URL of a page that sent a message to scroll the title bar off screen. 2772 * 2773 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 2774 * title bar off the screen. Sometimes, the scroll position is set before 2775 * the page finishes loading. Rather than scrolling while the page is still 2776 * loading, keep track of the URL and new scroll position so we can perform 2777 * the scroll once the page finishes loading. 2778 */ 2779 private String mPageThatNeedsToSlideTitleBarOffScreen; 2780 2781 /** 2782 * The destination Y scroll position to be used when the page finishes 2783 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 2784 */ 2785 private int mYDistanceToSlideTitleOffScreen; 2786 2787 // scale from content to view coordinates, and pin 2788 // return true if pin caused the final x/y different than the request cx/cy, 2789 // and a future scroll may reach the request cx/cy after our size has 2790 // changed 2791 // return false if the view scroll to the exact position as it is requested, 2792 // where negative numbers are taken to mean 0 2793 private boolean setContentScrollTo(int cx, int cy) { 2794 if (mDrawHistory) { 2795 // disallow WebView to change the scroll position as History Picture 2796 // is used in the view system. 2797 // One known case where this is called is that WebCore tries to 2798 // restore the scroll position. As history Picture already uses the 2799 // saved scroll position, it is ok to skip this. 2800 return false; 2801 } 2802 int vx; 2803 int vy; 2804 if ((cx | cy) == 0) { 2805 // If the page is being scrolled to (0,0), do not add in the title 2806 // bar's height, and simply scroll to (0,0). (The only other work 2807 // in contentToView_ is to multiply, so this would not change 0.) 2808 vx = 0; 2809 vy = 0; 2810 } else { 2811 vx = contentToViewX(cx); 2812 vy = contentToViewY(cy); 2813 } 2814// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2815// vx + " " + vy + "]"); 2816 // Some mobile sites attempt to scroll the title bar off the page by 2817 // scrolling to (0,1). If we are at the top left corner of the 2818 // page, assume this is an attempt to scroll off the title bar, and 2819 // animate the title bar off screen slowly enough that the user can see 2820 // it. 2821 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 2822 && mTitleBar != null) { 2823 // FIXME: 100 should be defined somewhere as our max progress. 2824 if (getProgress() < 100) { 2825 // Wait to scroll the title bar off screen until the page has 2826 // finished loading. Keep track of the URL and the destination 2827 // Y position 2828 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 2829 mYDistanceToSlideTitleOffScreen = vy; 2830 } else { 2831 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2832 } 2833 // Since we are animating, we have not yet reached the desired 2834 // scroll position. Do not return true to request another attempt 2835 return false; 2836 } 2837 pinScrollTo(vx, vy, false, 0); 2838 // If the request was to scroll to a negative coordinate, treat it as if 2839 // it was a request to scroll to 0 2840 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2841 return true; 2842 } else { 2843 return false; 2844 } 2845 } 2846 2847 // scale from content to view coordinates, and pin 2848 private void spawnContentScrollTo(int cx, int cy) { 2849 if (mDrawHistory) { 2850 // disallow WebView to change the scroll position as History Picture 2851 // is used in the view system. 2852 return; 2853 } 2854 int vx = contentToViewX(cx); 2855 int vy = contentToViewY(cy); 2856 pinScrollTo(vx, vy, true, 0); 2857 } 2858 2859 /** 2860 * These are from webkit, and are in content coordinate system (unzoomed) 2861 */ 2862 private void contentSizeChanged(boolean updateLayout) { 2863 // suppress 0,0 since we usually see real dimensions soon after 2864 // this avoids drawing the prev content in a funny place. If we find a 2865 // way to consolidate these notifications, this check may become 2866 // obsolete 2867 if ((mContentWidth | mContentHeight) == 0) { 2868 return; 2869 } 2870 2871 if (mHeightCanMeasure) { 2872 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2873 || updateLayout) { 2874 requestLayout(); 2875 } 2876 } else if (mWidthCanMeasure) { 2877 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2878 || updateLayout) { 2879 requestLayout(); 2880 } 2881 } else { 2882 // If we don't request a layout, try to send our view size to the 2883 // native side to ensure that WebCore has the correct dimensions. 2884 sendViewSizeZoom(); 2885 } 2886 } 2887 2888 /** 2889 * Set the WebViewClient that will receive various notifications and 2890 * requests. This will replace the current handler. 2891 * @param client An implementation of WebViewClient. 2892 */ 2893 public void setWebViewClient(WebViewClient client) { 2894 mCallbackProxy.setWebViewClient(client); 2895 } 2896 2897 /** 2898 * Gets the WebViewClient 2899 * @return the current WebViewClient instance. 2900 * 2901 *@hide pending API council approval. 2902 */ 2903 public WebViewClient getWebViewClient() { 2904 return mCallbackProxy.getWebViewClient(); 2905 } 2906 2907 /** 2908 * Register the interface to be used when content can not be handled by 2909 * the rendering engine, and should be downloaded instead. This will replace 2910 * the current handler. 2911 * @param listener An implementation of DownloadListener. 2912 */ 2913 public void setDownloadListener(DownloadListener listener) { 2914 mCallbackProxy.setDownloadListener(listener); 2915 } 2916 2917 /** 2918 * Set the chrome handler. This is an implementation of WebChromeClient for 2919 * use in handling Javascript dialogs, favicons, titles, and the progress. 2920 * This will replace the current handler. 2921 * @param client An implementation of WebChromeClient. 2922 */ 2923 public void setWebChromeClient(WebChromeClient client) { 2924 mCallbackProxy.setWebChromeClient(client); 2925 } 2926 2927 /** 2928 * Gets the chrome handler. 2929 * @return the current WebChromeClient instance. 2930 * 2931 * @hide API council approval. 2932 */ 2933 public WebChromeClient getWebChromeClient() { 2934 return mCallbackProxy.getWebChromeClient(); 2935 } 2936 2937 /** 2938 * Set the back/forward list client. This is an implementation of 2939 * WebBackForwardListClient for handling new items and changes in the 2940 * history index. 2941 * @param client An implementation of WebBackForwardListClient. 2942 * {@hide} 2943 */ 2944 public void setWebBackForwardListClient(WebBackForwardListClient client) { 2945 mCallbackProxy.setWebBackForwardListClient(client); 2946 } 2947 2948 /** 2949 * Gets the WebBackForwardListClient. 2950 * {@hide} 2951 */ 2952 public WebBackForwardListClient getWebBackForwardListClient() { 2953 return mCallbackProxy.getWebBackForwardListClient(); 2954 } 2955 2956 /** 2957 * Set the Picture listener. This is an interface used to receive 2958 * notifications of a new Picture. 2959 * @param listener An implementation of WebView.PictureListener. 2960 */ 2961 public void setPictureListener(PictureListener listener) { 2962 mPictureListener = listener; 2963 } 2964 2965 /** 2966 * {@hide} 2967 */ 2968 /* FIXME: Debug only! Remove for SDK! */ 2969 public void externalRepresentation(Message callback) { 2970 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2971 } 2972 2973 /** 2974 * {@hide} 2975 */ 2976 /* FIXME: Debug only! Remove for SDK! */ 2977 public void documentAsText(Message callback) { 2978 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2979 } 2980 2981 /** 2982 * Use this function to bind an object to Javascript so that the 2983 * methods can be accessed from Javascript. 2984 * <p><strong>IMPORTANT:</strong> 2985 * <ul> 2986 * <li> Using addJavascriptInterface() allows JavaScript to control your 2987 * application. This can be a very useful feature or a dangerous security 2988 * issue. When the HTML in the WebView is untrustworthy (for example, part 2989 * or all of the HTML is provided by some person or process), then an 2990 * attacker could inject HTML that will execute your code and possibly any 2991 * code of the attacker's choosing.<br> 2992 * Do not use addJavascriptInterface() unless all of the HTML in this 2993 * WebView was written by you.</li> 2994 * <li> The Java object that is bound runs in another thread and not in 2995 * the thread that it was constructed in.</li> 2996 * </ul></p> 2997 * @param obj The class instance to bind to Javascript 2998 * @param interfaceName The name to used to expose the class in Javascript 2999 */ 3000 public void addJavascriptInterface(Object obj, String interfaceName) { 3001 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3002 arg.mObject = obj; 3003 arg.mInterfaceName = interfaceName; 3004 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3005 } 3006 3007 /** 3008 * Return the WebSettings object used to control the settings for this 3009 * WebView. 3010 * @return A WebSettings object that can be used to control this WebView's 3011 * settings. 3012 */ 3013 public WebSettings getSettings() { 3014 return mWebViewCore.getSettings(); 3015 } 3016 3017 /** 3018 * Use this method to inform the webview about packages that are installed 3019 * in the system. This information will be used by the 3020 * navigator.isApplicationInstalled() API. 3021 * @param packageNames is a set of package names that are known to be 3022 * installed in the system. 3023 * 3024 * @hide not a public API 3025 */ 3026 public void addPackageNames(Set<String> packageNames) { 3027 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, packageNames); 3028 } 3029 3030 /** 3031 * Use this method to inform the webview about single packages that are 3032 * installed in the system. This information will be used by the 3033 * navigator.isApplicationInstalled() API. 3034 * @param packageName is the name of a package that is known to be 3035 * installed in the system. 3036 * 3037 * @hide not a public API 3038 */ 3039 public void addPackageName(String packageName) { 3040 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 3041 } 3042 3043 /** 3044 * Use this method to inform the webview about packages that are uninstalled 3045 * in the system. This information will be used by the 3046 * navigator.isApplicationInstalled() API. 3047 * @param packageName is the name of a package that has been uninstalled in 3048 * the system. 3049 * 3050 * @hide not a public API 3051 */ 3052 public void removePackageName(String packageName) { 3053 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 3054 } 3055 3056 /** 3057 * Return the list of currently loaded plugins. 3058 * @return The list of currently loaded plugins. 3059 * 3060 * @deprecated This was used for Gears, which has been deprecated. 3061 */ 3062 @Deprecated 3063 public static synchronized PluginList getPluginList() { 3064 return new PluginList(); 3065 } 3066 3067 /** 3068 * @deprecated This was used for Gears, which has been deprecated. 3069 */ 3070 @Deprecated 3071 public void refreshPlugins(boolean reloadOpenPages) { } 3072 3073 //------------------------------------------------------------------------- 3074 // Override View methods 3075 //------------------------------------------------------------------------- 3076 3077 @Override 3078 protected void finalize() throws Throwable { 3079 try { 3080 destroy(); 3081 } finally { 3082 super.finalize(); 3083 } 3084 } 3085 3086 @Override 3087 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3088 if (child == mTitleBar) { 3089 // When drawing the title bar, move it horizontally to always show 3090 // at the top of the WebView. 3091 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3092 } 3093 return super.drawChild(canvas, child, drawingTime); 3094 } 3095 3096 private void drawContent(Canvas canvas) { 3097 // Update the buttons in the picture, so when we draw the picture 3098 // to the screen, they are in the correct state. 3099 // Tell the native side if user is a) touching the screen, 3100 // b) pressing the trackball down, or c) pressing the enter key 3101 // If the cursor is on a button, we need to draw it in the pressed 3102 // state. 3103 // If mNativeClass is 0, we should not reach here, so we do not 3104 // need to check it again. 3105 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3106 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3107 || mTrackballDown || mGotCenterDown, false); 3108 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3109 } 3110 3111 @Override 3112 protected void onDraw(Canvas canvas) { 3113 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3114 if (mNativeClass == 0) { 3115 return; 3116 } 3117 3118 // if both mContentWidth and mContentHeight are 0, it means there is no 3119 // valid Picture passed to WebView yet. This can happen when WebView 3120 // just starts. Draw the background and return. 3121 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3122 canvas.drawColor(mBackgroundColor); 3123 return; 3124 } 3125 3126 int saveCount = canvas.save(); 3127 if (mTitleBar != null) { 3128 canvas.translate(0, (int) mTitleBar.getHeight()); 3129 } 3130 if (mDragTrackerHandler == null) { 3131 drawContent(canvas); 3132 } else { 3133 if (!mDragTrackerHandler.draw(canvas)) { 3134 // sometimes the tracker doesn't draw, even though its active 3135 drawContent(canvas); 3136 } 3137 if (mDragTrackerHandler.isFinished()) { 3138 mDragTrackerHandler = null; 3139 } 3140 } 3141 canvas.restoreToCount(saveCount); 3142 3143 // Now draw the shadow. 3144 int titleH = getVisibleTitleHeight(); 3145 if (mTitleBar != null && titleH == 0) { 3146 int height = (int) (5f * getContext().getResources() 3147 .getDisplayMetrics().density); 3148 mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(), 3149 mScrollY + height); 3150 mTitleShadow.draw(canvas); 3151 } 3152 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3153 invalidate(); 3154 } 3155 if (inEditingMode()) mWebTextView.onDrawSubstitute(); 3156 mWebViewCore.signalRepaintDone(); 3157 } 3158 3159 @Override 3160 public void setLayoutParams(ViewGroup.LayoutParams params) { 3161 if (params.height == LayoutParams.WRAP_CONTENT) { 3162 mWrapContent = true; 3163 } 3164 super.setLayoutParams(params); 3165 } 3166 3167 @Override 3168 public boolean performLongClick() { 3169 // performLongClick() is the result of a delayed message. If we switch 3170 // to windows overview, the WebView will be temporarily removed from the 3171 // view system. In that case, do nothing. 3172 if (getParent() == null) return false; 3173 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3174 // Send the click so that the textfield is in focus 3175 centerKeyPressOnTextField(); 3176 rebuildWebTextView(); 3177 } 3178 if (inEditingMode()) { 3179 return mWebTextView.performLongClick(); 3180 } else { 3181 return super.performLongClick(); 3182 } 3183 } 3184 3185 boolean inAnimateZoom() { 3186 return mZoomScale != 0; 3187 } 3188 3189 /** 3190 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3191 * has changed. This is especially important for password fields, which are 3192 * drawn by the WebTextView, since it conveys more information than what 3193 * webkit draws. Thus we need to reposition it to show in the correct 3194 * place. 3195 */ 3196 private boolean mNeedToAdjustWebTextView; 3197 3198 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3199 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3200 Rect vBox = contentToViewRect(contentBounds); 3201 Rect visibleRect = new Rect(); 3202 calcOurVisibleRect(visibleRect); 3203 // If the textfield is on screen, place the WebTextView in 3204 // its new place, accounting for our new scroll/zoom values, 3205 // and adjust its textsize. 3206 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3207 : visibleRect.contains(vBox)) { 3208 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3209 vBox.height()); 3210 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3211 contentToViewDimension( 3212 nativeFocusCandidateTextSize())); 3213 return true; 3214 } else { 3215 // The textfield is now off screen. The user probably 3216 // was not zooming to see the textfield better. Remove 3217 // the WebTextView. If the user types a key, and the 3218 // textfield is still in focus, we will reconstruct 3219 // the WebTextView and scroll it back on screen. 3220 mWebTextView.remove(); 3221 return false; 3222 } 3223 } 3224 3225 private void drawExtras(Canvas canvas, int extras, boolean animationsRunning) { 3226 // If mNativeClass is 0, we should not reach here, so we do not 3227 // need to check it again. 3228 if (animationsRunning) { 3229 canvas.setDrawFilter(mWebViewCore.mZoomFilter); 3230 } 3231 nativeDrawExtras(canvas, extras); 3232 canvas.setDrawFilter(null); 3233 } 3234 3235 private void drawCoreAndCursorRing(Canvas canvas, int color, 3236 boolean drawCursorRing) { 3237 if (mDrawHistory) { 3238 canvas.scale(mActualScale, mActualScale); 3239 canvas.drawPicture(mHistoryPicture); 3240 return; 3241 } 3242 3243 boolean animateZoom = mZoomScale != 0; 3244 boolean animateScroll = ((!mScroller.isFinished() 3245 || mVelocityTracker != null) 3246 && (mTouchMode != TOUCH_DRAG_MODE || 3247 mHeldMotionless != MOTIONLESS_TRUE)) 3248 || mDeferTouchMode == TOUCH_DRAG_MODE; 3249 if (mTouchMode == TOUCH_DRAG_MODE) { 3250 if (mHeldMotionless == MOTIONLESS_PENDING) { 3251 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3252 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3253 mHeldMotionless = MOTIONLESS_FALSE; 3254 } 3255 if (mHeldMotionless == MOTIONLESS_FALSE) { 3256 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3257 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3258 mHeldMotionless = MOTIONLESS_PENDING; 3259 } 3260 } 3261 if (animateZoom) { 3262 float zoomScale; 3263 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 3264 if (interval < ZOOM_ANIMATION_LENGTH) { 3265 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 3266 zoomScale = 1.0f / (mInvInitialZoomScale 3267 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 3268 invalidate(); 3269 } else { 3270 zoomScale = mZoomScale; 3271 // set mZoomScale to be 0 as we have done animation 3272 mZoomScale = 0; 3273 WebViewCore.resumeUpdatePicture(mWebViewCore); 3274 // call invalidate() again to draw with the final filters 3275 invalidate(); 3276 if (mNeedToAdjustWebTextView) { 3277 mNeedToAdjustWebTextView = false; 3278 if (didUpdateTextViewBounds(false) 3279 && nativeFocusCandidateIsPassword()) { 3280 // If it is a password field, start drawing the 3281 // WebTextView once again. 3282 mWebTextView.setInPassword(true); 3283 } 3284 } 3285 } 3286 // calculate the intermediate scroll position. As we need to use 3287 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 3288 float scale = zoomScale * mInvInitialZoomScale; 3289 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 3290 - mZoomCenterX); 3291 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 3292 * zoomScale)) + mScrollX; 3293 int titleHeight = getTitleHeight(); 3294 int ty = Math.round(scale 3295 * (mInitialScrollY + mZoomCenterY - titleHeight) 3296 - (mZoomCenterY - titleHeight)); 3297 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 3298 - titleHeight, getViewHeight(), Math.round(mContentHeight 3299 * zoomScale)) + titleHeight) + mScrollY; 3300 canvas.translate(tx, ty); 3301 canvas.scale(zoomScale, zoomScale); 3302 if (inEditingMode() && !mNeedToAdjustWebTextView 3303 && mZoomScale != 0) { 3304 // The WebTextView is up. Keep track of this so we can adjust 3305 // its size and placement when we finish zooming 3306 mNeedToAdjustWebTextView = true; 3307 // If it is in password mode, turn it off so it does not draw 3308 // misplaced. 3309 if (nativeFocusCandidateIsPassword()) { 3310 mWebTextView.setInPassword(false); 3311 } 3312 } 3313 } else { 3314 canvas.scale(mActualScale, mActualScale); 3315 } 3316 3317 boolean UIAnimationsRunning = false; 3318 // Currently for each draw we compute the animation values; 3319 // We may in the future decide to do that independently. 3320 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 3321 UIAnimationsRunning = true; 3322 // If we have unfinished (or unstarted) animations, 3323 // we ask for a repaint. 3324 invalidate(); 3325 } 3326 mWebViewCore.drawContentPicture(canvas, color, 3327 (animateZoom || mPreviewZoomOnly || UIAnimationsRunning), 3328 animateScroll); 3329 if (mNativeClass == 0) return; 3330 // decide which adornments to draw 3331 int extras = DRAW_EXTRAS_NONE; 3332 if (mFindIsUp) { 3333 // When the FindDialog is up, only draw the matches if we are not in 3334 // the process of scrolling them into view. 3335 if (!animateScroll) { 3336 extras = DRAW_EXTRAS_FIND; 3337 } 3338 } else if (mShiftIsPressed && !nativeFocusIsPlugin()) { 3339 if (!animateZoom && !mPreviewZoomOnly) { 3340 extras = DRAW_EXTRAS_SELECTION; 3341 nativeSetSelectionRegion(mTouchSelection || mExtendSelection); 3342 nativeSetSelectionPointer(!mTouchSelection, mInvActualScale, 3343 mSelectX, mSelectY - getTitleHeight(), 3344 mExtendSelection); 3345 } 3346 } else if (drawCursorRing) { 3347 extras = DRAW_EXTRAS_CURSOR_RING; 3348 } 3349 drawExtras(canvas, extras, UIAnimationsRunning); 3350 3351 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3352 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3353 mTouchMode = TOUCH_SHORTPRESS_MODE; 3354 HitTestResult hitTest = getHitTestResult(); 3355 if (hitTest == null 3356 || hitTest.mType == HitTestResult.UNKNOWN_TYPE) { 3357 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3358 } 3359 } 3360 } 3361 if (mFocusSizeChanged) { 3362 mFocusSizeChanged = false; 3363 // If we are zooming, this will get handled above, when the zoom 3364 // finishes. We also do not need to do this unless the WebTextView 3365 // is showing. 3366 if (!animateZoom && inEditingMode()) { 3367 didUpdateTextViewBounds(true); 3368 } 3369 } 3370 } 3371 3372 // draw history 3373 private boolean mDrawHistory = false; 3374 private Picture mHistoryPicture = null; 3375 private int mHistoryWidth = 0; 3376 private int mHistoryHeight = 0; 3377 3378 // Only check the flag, can be called from WebCore thread 3379 boolean drawHistory() { 3380 return mDrawHistory; 3381 } 3382 3383 // Should only be called in UI thread 3384 void switchOutDrawHistory() { 3385 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3386 if (mDrawHistory && mWebViewCore.pictureReady()) { 3387 mDrawHistory = false; 3388 mHistoryPicture = null; 3389 invalidate(); 3390 int oldScrollX = mScrollX; 3391 int oldScrollY = mScrollY; 3392 mScrollX = pinLocX(mScrollX); 3393 mScrollY = pinLocY(mScrollY); 3394 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3395 mUserScroll = false; 3396 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3397 oldScrollY); 3398 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 3399 } else { 3400 sendOurVisibleRect(); 3401 } 3402 } 3403 } 3404 3405 WebViewCore.CursorData cursorData() { 3406 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3407 result.mMoveGeneration = nativeMoveGeneration(); 3408 result.mFrame = nativeCursorFramePointer(); 3409 Point position = nativeCursorPosition(); 3410 result.mX = position.x; 3411 result.mY = position.y; 3412 return result; 3413 } 3414 3415 /** 3416 * Delete text from start to end in the focused textfield. If there is no 3417 * focus, or if start == end, silently fail. If start and end are out of 3418 * order, swap them. 3419 * @param start Beginning of selection to delete. 3420 * @param end End of selection to delete. 3421 */ 3422 /* package */ void deleteSelection(int start, int end) { 3423 mTextGeneration++; 3424 WebViewCore.TextSelectionData data 3425 = new WebViewCore.TextSelectionData(start, end); 3426 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3427 data); 3428 } 3429 3430 /** 3431 * Set the selection to (start, end) in the focused textfield. If start and 3432 * end are out of order, swap them. 3433 * @param start Beginning of selection. 3434 * @param end End of selection. 3435 */ 3436 /* package */ void setSelection(int start, int end) { 3437 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3438 } 3439 3440 @Override 3441 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3442 InputConnection connection = super.onCreateInputConnection(outAttrs); 3443 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3444 return connection; 3445 } 3446 3447 /** 3448 * Called in response to a message from webkit telling us that the soft 3449 * keyboard should be launched. 3450 */ 3451 private void displaySoftKeyboard(boolean isTextView) { 3452 InputMethodManager imm = (InputMethodManager) 3453 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3454 3455 // bring it back to the default scale so that user can enter text 3456 boolean zoom = mActualScale < mDefaultScale; 3457 if (zoom) { 3458 mInZoomOverview = false; 3459 mZoomCenterX = mLastTouchX; 3460 mZoomCenterY = mLastTouchY; 3461 // do not change text wrap scale so that there is no reflow 3462 setNewZoomScale(mDefaultScale, false, false); 3463 } 3464 if (isTextView) { 3465 rebuildWebTextView(); 3466 if (inEditingMode()) { 3467 imm.showSoftInput(mWebTextView, 0); 3468 if (zoom) { 3469 didUpdateTextViewBounds(true); 3470 } 3471 return; 3472 } 3473 } 3474 // Used by plugins. 3475 // Also used if the navigation cache is out of date, and 3476 // does not recognize that a textfield is in focus. In that 3477 // case, use WebView as the targeted view. 3478 // see http://b/issue?id=2457459 3479 imm.showSoftInput(this, 0); 3480 } 3481 3482 // Called by WebKit to instruct the UI to hide the keyboard 3483 private void hideSoftKeyboard() { 3484 InputMethodManager imm = (InputMethodManager) 3485 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3486 3487 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3488 } 3489 3490 /* 3491 * This method checks the current focus and cursor and potentially rebuilds 3492 * mWebTextView to have the appropriate properties, such as password, 3493 * multiline, and what text it contains. It also removes it if necessary. 3494 */ 3495 /* package */ void rebuildWebTextView() { 3496 // If the WebView does not have focus, do nothing until it gains focus. 3497 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3498 return; 3499 } 3500 boolean alreadyThere = inEditingMode(); 3501 // inEditingMode can only return true if mWebTextView is non-null, 3502 // so we can safely call remove() if (alreadyThere) 3503 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3504 if (alreadyThere) { 3505 mWebTextView.remove(); 3506 } 3507 return; 3508 } 3509 // At this point, we know we have found an input field, so go ahead 3510 // and create the WebTextView if necessary. 3511 if (mWebTextView == null) { 3512 mWebTextView = new WebTextView(mContext, WebView.this); 3513 // Initialize our generation number. 3514 mTextGeneration = 0; 3515 } 3516 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3517 contentToViewDimension(nativeFocusCandidateTextSize())); 3518 Rect visibleRect = new Rect(); 3519 calcOurContentVisibleRect(visibleRect); 3520 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3521 // should be in content coordinates. 3522 Rect bounds = nativeFocusCandidateNodeBounds(); 3523 Rect vBox = contentToViewRect(bounds); 3524 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3525 if (!Rect.intersects(bounds, visibleRect)) { 3526 mWebTextView.bringIntoView(); 3527 } 3528 String text = nativeFocusCandidateText(); 3529 int nodePointer = nativeFocusCandidatePointer(); 3530 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3531 // It is possible that we have the same textfield, but it has moved, 3532 // i.e. In the case of opening/closing the screen. 3533 // In that case, we need to set the dimensions, but not the other 3534 // aspects. 3535 // If the text has been changed by webkit, update it. However, if 3536 // there has been more UI text input, ignore it. We will receive 3537 // another update when that text is recognized. 3538 if (text != null && !text.equals(mWebTextView.getText().toString()) 3539 && nativeTextGeneration() == mTextGeneration) { 3540 mWebTextView.setTextAndKeepSelection(text); 3541 } 3542 } else { 3543 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3544 Gravity.RIGHT : Gravity.NO_GRAVITY); 3545 // This needs to be called before setType, which may call 3546 // requestFormData, and it needs to have the correct nodePointer. 3547 mWebTextView.setNodePointer(nodePointer); 3548 mWebTextView.setType(nativeFocusCandidateType()); 3549 if (null == text) { 3550 if (DebugFlags.WEB_VIEW) { 3551 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3552 } 3553 text = ""; 3554 } 3555 mWebTextView.setTextAndKeepSelection(text); 3556 InputMethodManager imm = InputMethodManager.peekInstance(); 3557 if (imm != null && imm.isActive(mWebTextView)) { 3558 imm.restartInput(mWebTextView); 3559 } 3560 } 3561 mWebTextView.requestFocus(); 3562 } 3563 3564 /** 3565 * Called by WebTextView to find saved form data associated with the 3566 * textfield 3567 * @param name Name of the textfield. 3568 * @param nodePointer Pointer to the node of the textfield, so it can be 3569 * compared to the currently focused textfield when the data is 3570 * retrieved. 3571 */ 3572 /* package */ void requestFormData(String name, int nodePointer) { 3573 if (mWebViewCore.getSettings().getSaveFormData()) { 3574 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3575 update.arg1 = nodePointer; 3576 RequestFormData updater = new RequestFormData(name, getUrl(), 3577 update); 3578 Thread t = new Thread(updater); 3579 t.start(); 3580 } 3581 } 3582 3583 /** 3584 * Pass a message to find out the <label> associated with the <input> 3585 * identified by nodePointer 3586 * @param framePointer Pointer to the frame containing the <input> node 3587 * @param nodePointer Pointer to the node for which a <label> is desired. 3588 */ 3589 /* package */ void requestLabel(int framePointer, int nodePointer) { 3590 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3591 nodePointer); 3592 } 3593 3594 /* 3595 * This class requests an Adapter for the WebTextView which shows past 3596 * entries stored in the database. It is a Runnable so that it can be done 3597 * in its own thread, without slowing down the UI. 3598 */ 3599 private class RequestFormData implements Runnable { 3600 private String mName; 3601 private String mUrl; 3602 private Message mUpdateMessage; 3603 3604 public RequestFormData(String name, String url, Message msg) { 3605 mName = name; 3606 mUrl = url; 3607 mUpdateMessage = msg; 3608 } 3609 3610 public void run() { 3611 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3612 if (pastEntries.size() > 0) { 3613 AutoCompleteAdapter adapter = new 3614 AutoCompleteAdapter(mContext, pastEntries); 3615 mUpdateMessage.obj = adapter; 3616 mUpdateMessage.sendToTarget(); 3617 } 3618 } 3619 } 3620 3621 /** 3622 * Dump the display tree to "/sdcard/displayTree.txt" 3623 * 3624 * @hide debug only 3625 */ 3626 public void dumpDisplayTree() { 3627 nativeDumpDisplayTree(getUrl()); 3628 } 3629 3630 /** 3631 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 3632 * "/sdcard/domTree.txt" 3633 * 3634 * @hide debug only 3635 */ 3636 public void dumpDomTree(boolean toFile) { 3637 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 3638 } 3639 3640 /** 3641 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 3642 * to "/sdcard/renderTree.txt" 3643 * 3644 * @hide debug only 3645 */ 3646 public void dumpRenderTree(boolean toFile) { 3647 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 3648 } 3649 3650 /** 3651 * Dump the V8 counters to standard output. 3652 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 3653 * true. Otherwise, this will do nothing. 3654 * 3655 * @hide debug only 3656 */ 3657 public void dumpV8Counters() { 3658 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 3659 } 3660 3661 // This is used to determine long press with the center key. Does not 3662 // affect long press with the trackball/touch. 3663 private boolean mGotCenterDown = false; 3664 3665 @Override 3666 public boolean onKeyDown(int keyCode, KeyEvent event) { 3667 if (DebugFlags.WEB_VIEW) { 3668 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3669 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3670 } 3671 3672 if (mNativeClass == 0) { 3673 return false; 3674 } 3675 3676 // do this hack up front, so it always works, regardless of touch-mode 3677 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3678 mAutoRedraw = !mAutoRedraw; 3679 if (mAutoRedraw) { 3680 invalidate(); 3681 } 3682 return true; 3683 } 3684 3685 // Bubble up the key event if 3686 // 1. it is a system key; or 3687 // 2. the host application wants to handle it; 3688 if (event.isSystem() 3689 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3690 return false; 3691 } 3692 3693 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3694 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3695 if (nativeFocusIsPlugin()) { 3696 mShiftIsPressed = true; 3697 } else if (!nativeCursorWantsKeyEvents() && !mShiftIsPressed) { 3698 setUpSelectXY(); 3699 } 3700 } 3701 3702 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3703 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3704 switchOutDrawHistory(); 3705 if (nativeFocusIsPlugin()) { 3706 letPluginHandleNavKey(keyCode, event.getEventTime(), true); 3707 return true; 3708 } 3709 if (mShiftIsPressed) { 3710 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 3711 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 3712 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 3713 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 3714 int multiplier = event.getRepeatCount() + 1; 3715 moveSelection(xRate * multiplier, yRate * multiplier); 3716 return true; 3717 } 3718 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 3719 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3720 return true; 3721 } 3722 // Bubble up the key event as WebView doesn't handle it 3723 return false; 3724 } 3725 3726 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3727 switchOutDrawHistory(); 3728 if (event.getRepeatCount() == 0) { 3729 if (mShiftIsPressed && !nativeFocusIsPlugin()) { 3730 return true; // discard press if copy in progress 3731 } 3732 mGotCenterDown = true; 3733 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3734 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3735 // Already checked mNativeClass, so we do not need to check it 3736 // again. 3737 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3738 return true; 3739 } 3740 // Bubble up the key event as WebView doesn't handle it 3741 return false; 3742 } 3743 3744 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3745 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3746 // turn off copy select if a shift-key combo is pressed 3747 mExtendSelection = mShiftIsPressed = false; 3748 if (mTouchMode == TOUCH_SELECT_MODE) { 3749 mTouchMode = TOUCH_INIT_MODE; 3750 } 3751 } 3752 3753 if (getSettings().getNavDump()) { 3754 switch (keyCode) { 3755 case KeyEvent.KEYCODE_4: 3756 dumpDisplayTree(); 3757 break; 3758 case KeyEvent.KEYCODE_5: 3759 case KeyEvent.KEYCODE_6: 3760 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 3761 break; 3762 case KeyEvent.KEYCODE_7: 3763 case KeyEvent.KEYCODE_8: 3764 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 3765 break; 3766 case KeyEvent.KEYCODE_9: 3767 nativeInstrumentReport(); 3768 return true; 3769 } 3770 } 3771 3772 if (nativeCursorIsTextInput()) { 3773 // This message will put the node in focus, for the DOM's notion 3774 // of focus, and make the focuscontroller active 3775 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3776 nativeCursorNodePointer()); 3777 // This will bring up the WebTextView and put it in focus, for 3778 // our view system's notion of focus 3779 rebuildWebTextView(); 3780 // Now we need to pass the event to it 3781 if (inEditingMode()) { 3782 mWebTextView.setDefaultSelection(); 3783 return mWebTextView.dispatchKeyEvent(event); 3784 } 3785 } else if (nativeHasFocusNode()) { 3786 // In this case, the cursor is not on a text input, but the focus 3787 // might be. Check it, and if so, hand over to the WebTextView. 3788 rebuildWebTextView(); 3789 if (inEditingMode()) { 3790 mWebTextView.setDefaultSelection(); 3791 return mWebTextView.dispatchKeyEvent(event); 3792 } 3793 } 3794 3795 // TODO: should we pass all the keys to DOM or check the meta tag 3796 if (nativeCursorWantsKeyEvents() || true) { 3797 // pass the key to DOM 3798 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3799 // return true as DOM handles the key 3800 return true; 3801 } 3802 3803 // Bubble up the key event as WebView doesn't handle it 3804 return false; 3805 } 3806 3807 @Override 3808 public boolean onKeyUp(int keyCode, KeyEvent event) { 3809 if (DebugFlags.WEB_VIEW) { 3810 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3811 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3812 } 3813 3814 if (mNativeClass == 0) { 3815 return false; 3816 } 3817 3818 // special CALL handling when cursor node's href is "tel:XXX" 3819 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3820 String text = nativeCursorText(); 3821 if (!nativeCursorIsTextInput() && text != null 3822 && text.startsWith(SCHEME_TEL)) { 3823 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3824 getContext().startActivity(intent); 3825 return true; 3826 } 3827 } 3828 3829 // Bubble up the key event if 3830 // 1. it is a system key; or 3831 // 2. the host application wants to handle it; 3832 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3833 return false; 3834 } 3835 3836 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3837 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3838 if (nativeFocusIsPlugin()) { 3839 mShiftIsPressed = false; 3840 } else if (commitCopy()) { 3841 return true; 3842 } 3843 } 3844 3845 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3846 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3847 if (nativeFocusIsPlugin()) { 3848 letPluginHandleNavKey(keyCode, event.getEventTime(), false); 3849 return true; 3850 } 3851 // always handle the navigation keys in the UI thread 3852 // Bubble up the key event as WebView doesn't handle it 3853 return false; 3854 } 3855 3856 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3857 // remove the long press message first 3858 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3859 mGotCenterDown = false; 3860 3861 if (mShiftIsPressed && !nativeFocusIsPlugin()) { 3862 if (mExtendSelection) { 3863 commitCopy(); 3864 } else { 3865 mExtendSelection = true; 3866 invalidate(); // draw the i-beam instead of the arrow 3867 } 3868 return true; // discard press if copy in progress 3869 } 3870 3871 // perform the single click 3872 Rect visibleRect = sendOurVisibleRect(); 3873 // Note that sendOurVisibleRect calls viewToContent, so the 3874 // coordinates should be in content coordinates. 3875 if (!nativeCursorIntersects(visibleRect)) { 3876 return false; 3877 } 3878 WebViewCore.CursorData data = cursorData(); 3879 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3880 playSoundEffect(SoundEffectConstants.CLICK); 3881 if (nativeCursorIsTextInput()) { 3882 rebuildWebTextView(); 3883 centerKeyPressOnTextField(); 3884 if (inEditingMode()) { 3885 mWebTextView.setDefaultSelection(); 3886 } 3887 return true; 3888 } 3889 clearTextEntry(true); 3890 nativeSetFollowedLink(true); 3891 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 3892 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3893 nativeCursorNodePointer()); 3894 } 3895 return true; 3896 } 3897 3898 // TODO: should we pass all the keys to DOM or check the meta tag 3899 if (nativeCursorWantsKeyEvents() || true) { 3900 // pass the key to DOM 3901 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3902 // return true as DOM handles the key 3903 return true; 3904 } 3905 3906 // Bubble up the key event as WebView doesn't handle it 3907 return false; 3908 } 3909 3910 private void setUpSelectXY() { 3911 mExtendSelection = false; 3912 mShiftIsPressed = true; 3913 if (nativeHasCursorNode()) { 3914 Rect rect = nativeCursorNodeBounds(); 3915 mSelectX = contentToViewX(rect.left); 3916 mSelectY = contentToViewY(rect.top); 3917 } else if (mLastTouchY > getVisibleTitleHeight()) { 3918 mSelectX = mScrollX + (int) mLastTouchX; 3919 mSelectY = mScrollY + (int) mLastTouchY; 3920 } else { 3921 mSelectX = mScrollX + getViewWidth() / 2; 3922 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 3923 } 3924 nativeHideCursor(); 3925 } 3926 3927 /** 3928 * Use this method to put the WebView into text selection mode. 3929 * Do not rely on this functionality; it will be deprecated in the future. 3930 */ 3931 public void emulateShiftHeld() { 3932 if (0 == mNativeClass) return; // client isn't initialized 3933 setUpSelectXY(); 3934 } 3935 3936 private boolean commitCopy() { 3937 boolean copiedSomething = false; 3938 if (mExtendSelection) { 3939 String selection = nativeGetSelection(); 3940 if (selection != "") { 3941 if (DebugFlags.WEB_VIEW) { 3942 Log.v(LOGTAG, "commitCopy \"" + selection + "\""); 3943 } 3944 Toast.makeText(mContext 3945 , com.android.internal.R.string.text_copied 3946 , Toast.LENGTH_SHORT).show(); 3947 copiedSomething = true; 3948 try { 3949 IClipboard clip = IClipboard.Stub.asInterface( 3950 ServiceManager.getService("clipboard")); 3951 clip.setClipboardText(selection); 3952 } catch (android.os.RemoteException e) { 3953 Log.e(LOGTAG, "Clipboard failed", e); 3954 } 3955 } 3956 mExtendSelection = false; 3957 } 3958 mShiftIsPressed = false; 3959 invalidate(); // remove selection region and pointer 3960 if (mTouchMode == TOUCH_SELECT_MODE) { 3961 mTouchMode = TOUCH_INIT_MODE; 3962 } 3963 return copiedSomething; 3964 } 3965 3966 @Override 3967 protected void onAttachedToWindow() { 3968 super.onAttachedToWindow(); 3969 if (hasWindowFocus()) setActive(true); 3970 } 3971 3972 @Override 3973 protected void onDetachedFromWindow() { 3974 clearTextEntry(false); 3975 dismissZoomControl(); 3976 if (hasWindowFocus()) setActive(false); 3977 super.onDetachedFromWindow(); 3978 } 3979 3980 @Override 3981 protected void onVisibilityChanged(View changedView, int visibility) { 3982 super.onVisibilityChanged(changedView, visibility); 3983 if (visibility != View.VISIBLE) { 3984 dismissZoomControl(); 3985 } 3986 } 3987 3988 /** 3989 * @deprecated WebView no longer needs to implement 3990 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3991 */ 3992 @Deprecated 3993 public void onChildViewAdded(View parent, View child) {} 3994 3995 /** 3996 * @deprecated WebView no longer needs to implement 3997 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3998 */ 3999 @Deprecated 4000 public void onChildViewRemoved(View p, View child) {} 4001 4002 /** 4003 * @deprecated WebView should not have implemented 4004 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 4005 * does nothing now. 4006 */ 4007 @Deprecated 4008 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4009 } 4010 4011 private void setActive(boolean active) { 4012 if (active) { 4013 if (hasFocus()) { 4014 // If our window regained focus, and we have focus, then begin 4015 // drawing the cursor ring 4016 mDrawCursorRing = true; 4017 if (mNativeClass != 0) { 4018 nativeRecordButtons(true, false, true); 4019 if (inEditingMode()) { 4020 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 4021 } 4022 } 4023 } else { 4024 // If our window gained focus, but we do not have it, do not 4025 // draw the cursor ring. 4026 mDrawCursorRing = false; 4027 // We do not call nativeRecordButtons here because we assume 4028 // that when we lost focus, or window focus, it got called with 4029 // false for the first parameter 4030 } 4031 } else { 4032 if (mWebViewCore != null && getSettings().getBuiltInZoomControls() 4033 && (mZoomButtonsController == null || 4034 !mZoomButtonsController.isVisible())) { 4035 /* 4036 * The zoom controls come in their own window, so our window 4037 * loses focus. Our policy is to not draw the cursor ring if 4038 * our window is not focused, but this is an exception since 4039 * the user can still navigate the web page with the zoom 4040 * controls showing. 4041 */ 4042 // If our window has lost focus, stop drawing the cursor ring 4043 mDrawCursorRing = false; 4044 } 4045 mGotKeyDown = false; 4046 mShiftIsPressed = false; 4047 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4048 mTouchMode = TOUCH_DONE_MODE; 4049 if (mNativeClass != 0) { 4050 nativeRecordButtons(false, false, true); 4051 } 4052 setFocusControllerInactive(); 4053 } 4054 invalidate(); 4055 } 4056 4057 // To avoid drawing the cursor ring, and remove the TextView when our window 4058 // loses focus. 4059 @Override 4060 public void onWindowFocusChanged(boolean hasWindowFocus) { 4061 setActive(hasWindowFocus); 4062 if (hasWindowFocus) { 4063 BrowserFrame.sJavaBridge.setActiveWebView(this); 4064 } else { 4065 BrowserFrame.sJavaBridge.removeActiveWebView(this); 4066 } 4067 super.onWindowFocusChanged(hasWindowFocus); 4068 } 4069 4070 /* 4071 * Pass a message to WebCore Thread, telling the WebCore::Page's 4072 * FocusController to be "inactive" so that it will 4073 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4074 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4075 */ 4076 /* package */ void setFocusControllerInactive() { 4077 // Do not need to also check whether mWebViewCore is null, because 4078 // mNativeClass is only set if mWebViewCore is non null 4079 if (mNativeClass == 0) return; 4080 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 4081 } 4082 4083 @Override 4084 protected void onFocusChanged(boolean focused, int direction, 4085 Rect previouslyFocusedRect) { 4086 if (DebugFlags.WEB_VIEW) { 4087 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4088 } 4089 if (focused) { 4090 // When we regain focus, if we have window focus, resume drawing 4091 // the cursor ring 4092 if (hasWindowFocus()) { 4093 mDrawCursorRing = true; 4094 if (mNativeClass != 0) { 4095 nativeRecordButtons(true, false, true); 4096 } 4097 //} else { 4098 // The WebView has gained focus while we do not have 4099 // windowfocus. When our window lost focus, we should have 4100 // called nativeRecordButtons(false...) 4101 } 4102 } else { 4103 // When we lost focus, unless focus went to the TextView (which is 4104 // true if we are in editing mode), stop drawing the cursor ring. 4105 if (!inEditingMode()) { 4106 mDrawCursorRing = false; 4107 if (mNativeClass != 0) { 4108 nativeRecordButtons(false, false, true); 4109 } 4110 setFocusControllerInactive(); 4111 } 4112 mGotKeyDown = false; 4113 } 4114 4115 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4116 } 4117 4118 /** 4119 * @hide 4120 */ 4121 @Override 4122 protected boolean setFrame(int left, int top, int right, int bottom) { 4123 boolean changed = super.setFrame(left, top, right, bottom); 4124 if (!changed && mHeightCanMeasure) { 4125 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4126 // in WebViewCore after we get the first layout. We do call 4127 // requestLayout() when we get contentSizeChanged(). But the View 4128 // system won't call onSizeChanged if the dimension is not changed. 4129 // In this case, we need to call sendViewSizeZoom() explicitly to 4130 // notify the WebKit about the new dimensions. 4131 sendViewSizeZoom(); 4132 } 4133 return changed; 4134 } 4135 4136 private static class PostScale implements Runnable { 4137 final WebView mWebView; 4138 final boolean mUpdateTextWrap; 4139 4140 public PostScale(WebView webView, boolean updateTextWrap) { 4141 mWebView = webView; 4142 mUpdateTextWrap = updateTextWrap; 4143 } 4144 4145 public void run() { 4146 if (mWebView.mWebViewCore != null) { 4147 // we always force, in case our height changed, in which case we 4148 // still want to send the notification over to webkit. 4149 mWebView.setNewZoomScale(mWebView.mActualScale, 4150 mUpdateTextWrap, true); 4151 // update the zoom buttons as the scale can be changed 4152 if (mWebView.getSettings().getBuiltInZoomControls()) { 4153 mWebView.updateZoomButtonsEnabled(); 4154 } 4155 } 4156 } 4157 } 4158 4159 @Override 4160 protected void onSizeChanged(int w, int h, int ow, int oh) { 4161 super.onSizeChanged(w, h, ow, oh); 4162 // Center zooming to the center of the screen. 4163 if (mZoomScale == 0) { // unless we're already zooming 4164 // To anchor at top left corner. 4165 mZoomCenterX = 0; 4166 mZoomCenterY = getVisibleTitleHeight(); 4167 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4168 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4169 } 4170 4171 // adjust the max viewport width depending on the view dimensions. This 4172 // is to ensure the scaling is not going insane. So do not shrink it if 4173 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4174 int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE); 4175 if (newMaxViewportWidth > sMaxViewportWidth) { 4176 sMaxViewportWidth = newMaxViewportWidth; 4177 } 4178 4179 // update mMinZoomScale if the minimum zoom scale is not fixed 4180 if (!mMinZoomScaleFixed) { 4181 // when change from narrow screen to wide screen, the new viewWidth 4182 // can be wider than the old content width. We limit the minimum 4183 // scale to 1.0f. The proper minimum scale will be calculated when 4184 // the new picture shows up. 4185 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 4186 / (mDrawHistory ? mHistoryPicture.getWidth() 4187 : mZoomOverviewWidth)); 4188 if (mInitialScaleInPercent > 0) { 4189 // limit the minZoomScale to the initialScale if it is set 4190 float initialScale = mInitialScaleInPercent / 100.0f; 4191 if (mMinZoomScale > initialScale) { 4192 mMinZoomScale = initialScale; 4193 } 4194 } 4195 } 4196 4197 dismissZoomControl(); 4198 4199 // onSizeChanged() is called during WebView layout. And any 4200 // requestLayout() is blocked during layout. As setNewZoomScale() will 4201 // call its child View to reposition itself through ViewManager's 4202 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 4203 // <b/> 4204 // only update the text wrap scale if width changed. 4205 post(new PostScale(this, w != ow)); 4206 } 4207 4208 @Override 4209 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4210 super.onScrollChanged(l, t, oldl, oldt); 4211 sendOurVisibleRect(); 4212 // update WebKit if visible title bar height changed. The logic is same 4213 // as getVisibleTitleHeight. 4214 int titleHeight = getTitleHeight(); 4215 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4216 sendViewSizeZoom(); 4217 } 4218 } 4219 4220 @Override 4221 public boolean dispatchKeyEvent(KeyEvent event) { 4222 boolean dispatch = true; 4223 4224 // Textfields and plugins need to receive the shift up key even if 4225 // another key was released while the shift key was held down. 4226 if (!inEditingMode() && (mNativeClass == 0 || !nativeFocusIsPlugin())) { 4227 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4228 mGotKeyDown = true; 4229 } else { 4230 if (!mGotKeyDown) { 4231 /* 4232 * We got a key up for which we were not the recipient of 4233 * the original key down. Don't give it to the view. 4234 */ 4235 dispatch = false; 4236 } 4237 mGotKeyDown = false; 4238 } 4239 } 4240 4241 if (dispatch) { 4242 return super.dispatchKeyEvent(event); 4243 } else { 4244 // We didn't dispatch, so let something else handle the key 4245 return false; 4246 } 4247 } 4248 4249 // Here are the snap align logic: 4250 // 1. If it starts nearly horizontally or vertically, snap align; 4251 // 2. If there is a dramitic direction change, let it go; 4252 // 3. If there is a same direction back and forth, lock it. 4253 4254 // adjustable parameters 4255 private int mMinLockSnapReverseDistance; 4256 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4257 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4258 4259 private static int sign(float x) { 4260 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4261 } 4262 4263 // if the page can scroll <= this value, we won't allow the drag tracker 4264 // to have any effect. 4265 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4266 4267 private class DragTrackerHandler { 4268 private final DragTracker mProxy; 4269 private final float mStartY, mStartX; 4270 private final float mMinDY, mMinDX; 4271 private final float mMaxDY, mMaxDX; 4272 private float mCurrStretchY, mCurrStretchX; 4273 private int mSX, mSY; 4274 private Interpolator mInterp; 4275 private float[] mXY = new float[2]; 4276 4277 // inner (non-state) classes can't have enums :( 4278 private static final int DRAGGING_STATE = 0; 4279 private static final int ANIMATING_STATE = 1; 4280 private static final int FINISHED_STATE = 2; 4281 private int mState; 4282 4283 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4284 mProxy = proxy; 4285 4286 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4287 int viewTop = getScrollY(); 4288 int viewBottom = viewTop + getHeight(); 4289 4290 mStartY = y; 4291 mMinDY = -viewTop; 4292 mMaxDY = docBottom - viewBottom; 4293 4294 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4295 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4296 " up/down= " + mMinDY + " " + mMaxDY); 4297 } 4298 4299 int docRight = computeHorizontalScrollRange(); 4300 int viewLeft = getScrollX(); 4301 int viewRight = viewLeft + getWidth(); 4302 mStartX = x; 4303 mMinDX = -viewLeft; 4304 mMaxDX = docRight - viewRight; 4305 4306 mState = DRAGGING_STATE; 4307 mProxy.onStartDrag(x, y); 4308 4309 // ensure we buildBitmap at least once 4310 mSX = -99999; 4311 } 4312 4313 private float computeStretch(float delta, float min, float max) { 4314 float stretch = 0; 4315 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4316 if (delta < min) { 4317 stretch = delta - min; 4318 } else if (delta > max) { 4319 stretch = delta - max; 4320 } 4321 } 4322 return stretch; 4323 } 4324 4325 public void dragTo(float x, float y) { 4326 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4327 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4328 4329 if ((mSnapScrollMode & SNAP_X) != 0) { 4330 sy = 0; 4331 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4332 sx = 0; 4333 } 4334 4335 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4336 mCurrStretchX = sx; 4337 mCurrStretchY = sy; 4338 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4339 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4340 " " + sy); 4341 } 4342 if (mProxy.onStretchChange(sx, sy)) { 4343 invalidate(); 4344 } 4345 } 4346 } 4347 4348 public void stopDrag() { 4349 final int DURATION = 200; 4350 int now = (int)SystemClock.uptimeMillis(); 4351 mInterp = new Interpolator(2); 4352 mXY[0] = mCurrStretchX; 4353 mXY[1] = mCurrStretchY; 4354 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4355 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4356 mInterp.setKeyFrame(0, now, mXY, blend); 4357 float[] zerozero = new float[] { 0, 0 }; 4358 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4359 mState = ANIMATING_STATE; 4360 4361 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4362 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4363 } 4364 } 4365 4366 // Call this after each draw. If it ruturns null, the tracker is done 4367 public boolean isFinished() { 4368 return mState == FINISHED_STATE; 4369 } 4370 4371 private int hiddenHeightOfTitleBar() { 4372 return getTitleHeight() - getVisibleTitleHeight(); 4373 } 4374 4375 // need a way to know if 565 or 8888 is the right config for 4376 // capturing the display and giving it to the drag proxy 4377 private Bitmap.Config offscreenBitmapConfig() { 4378 // hard code 565 for now 4379 return Bitmap.Config.RGB_565; 4380 } 4381 4382 /* If the tracker draws, then this returns true, otherwise it will 4383 return false, and draw nothing. 4384 */ 4385 public boolean draw(Canvas canvas) { 4386 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4387 int sx = getScrollX(); 4388 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4389 if (mSX != sx || mSY != sy) { 4390 buildBitmap(sx, sy); 4391 mSX = sx; 4392 mSY = sy; 4393 } 4394 4395 if (mState == ANIMATING_STATE) { 4396 Interpolator.Result result = mInterp.timeToValues(mXY); 4397 if (result == Interpolator.Result.FREEZE_END) { 4398 mState = FINISHED_STATE; 4399 return false; 4400 } else { 4401 mProxy.onStretchChange(mXY[0], mXY[1]); 4402 invalidate(); 4403 // fall through to the draw 4404 } 4405 } 4406 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4407 canvas.translate(sx, sy); 4408 mProxy.onDraw(canvas); 4409 canvas.restoreToCount(count); 4410 return true; 4411 } 4412 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4413 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4414 mCurrStretchX + " " + mCurrStretchY); 4415 } 4416 return false; 4417 } 4418 4419 private void buildBitmap(int sx, int sy) { 4420 int w = getWidth(); 4421 int h = getViewHeight(); 4422 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4423 Canvas canvas = new Canvas(bm); 4424 canvas.translate(-sx, -sy); 4425 drawContent(canvas); 4426 4427 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4428 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4429 " " + sy + " " + w + " " + h); 4430 } 4431 mProxy.onBitmapChange(bm); 4432 } 4433 } 4434 4435 /** @hide */ 4436 public static class DragTracker { 4437 public void onStartDrag(float x, float y) {} 4438 public boolean onStretchChange(float sx, float sy) { 4439 // return true to have us inval the view 4440 return false; 4441 } 4442 public void onStopDrag() {} 4443 public void onBitmapChange(Bitmap bm) {} 4444 public void onDraw(Canvas canvas) {} 4445 } 4446 4447 /** @hide */ 4448 public DragTracker getDragTracker() { 4449 return mDragTracker; 4450 } 4451 4452 /** @hide */ 4453 public void setDragTracker(DragTracker tracker) { 4454 mDragTracker = tracker; 4455 } 4456 4457 private DragTracker mDragTracker; 4458 private DragTrackerHandler mDragTrackerHandler; 4459 4460 private class ScaleDetectorListener implements 4461 ScaleGestureDetector.OnScaleGestureListener { 4462 4463 public boolean onScaleBegin(ScaleGestureDetector detector) { 4464 // cancel the single touch handling 4465 cancelTouch(); 4466 dismissZoomControl(); 4467 // reset the zoom overview mode so that the page won't auto grow 4468 mInZoomOverview = false; 4469 // If it is in password mode, turn it off so it does not draw 4470 // misplaced. 4471 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4472 mWebTextView.setInPassword(false); 4473 } 4474 4475 mViewManager.startZoom(); 4476 4477 return true; 4478 } 4479 4480 public void onScaleEnd(ScaleGestureDetector detector) { 4481 if (mPreviewZoomOnly) { 4482 mPreviewZoomOnly = false; 4483 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4484 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4485 // don't reflow when zoom in; when zoom out, do reflow if the 4486 // new scale is almost minimum scale; 4487 boolean reflowNow = (mActualScale - mMinZoomScale 4488 <= MINIMUM_SCALE_INCREMENT) 4489 || ((mActualScale <= 0.8 * mTextWrapScale)); 4490 // force zoom after mPreviewZoomOnly is set to false so that the 4491 // new view size will be passed to the WebKit 4492 setNewZoomScale(mActualScale, reflowNow, true); 4493 // call invalidate() to draw without zoom filter 4494 invalidate(); 4495 } 4496 // adjust the edit text view if needed 4497 if (inEditingMode() && didUpdateTextViewBounds(false) 4498 && nativeFocusCandidateIsPassword()) { 4499 // If it is a password field, start drawing the 4500 // WebTextView once again. 4501 mWebTextView.setInPassword(true); 4502 } 4503 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4504 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4505 // may trigger the unwanted fling. 4506 mTouchMode = TOUCH_PINCH_DRAG; 4507 mConfirmMove = true; 4508 startTouch(detector.getFocusX(), detector.getFocusY(), 4509 mLastTouchTime); 4510 4511 mViewManager.endZoom(); 4512 } 4513 4514 public boolean onScale(ScaleGestureDetector detector) { 4515 float scale = (float) (Math.round(detector.getScaleFactor() 4516 * mActualScale * 100) / 100.0); 4517 if (Math.abs(scale - mActualScale) >= MINIMUM_SCALE_INCREMENT) { 4518 mPreviewZoomOnly = true; 4519 // limit the scale change per step 4520 if (scale > mActualScale) { 4521 scale = Math.min(scale, mActualScale * 1.25f); 4522 } else { 4523 scale = Math.max(scale, mActualScale * 0.8f); 4524 } 4525 mZoomCenterX = detector.getFocusX(); 4526 mZoomCenterY = detector.getFocusY(); 4527 setNewZoomScale(scale, false, false); 4528 invalidate(); 4529 return true; 4530 } 4531 return false; 4532 } 4533 } 4534 4535 private boolean hitFocusedPlugin(int contentX, int contentY) { 4536 if (DebugFlags.WEB_VIEW) { 4537 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 4538 Rect r = nativeFocusNodeBounds(); 4539 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 4540 + ", " + r.right + ", " + r.bottom + ")"); 4541 } 4542 return nativeFocusIsPlugin() 4543 && nativeFocusNodeBounds().contains(contentX, contentY); 4544 } 4545 4546 private boolean shouldForwardTouchEvent() { 4547 return mFullScreenHolder != null || (mForwardTouchEvents 4548 && mTouchMode != TOUCH_SELECT_MODE 4549 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 4550 } 4551 4552 private boolean inFullScreenMode() { 4553 return mFullScreenHolder != null; 4554 } 4555 4556 @Override 4557 public boolean onTouchEvent(MotionEvent ev) { 4558 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4559 return false; 4560 } 4561 4562 if (DebugFlags.WEB_VIEW) { 4563 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4564 + mTouchMode); 4565 } 4566 4567 int action; 4568 float x, y; 4569 long eventTime = ev.getEventTime(); 4570 4571 // FIXME: we may consider to give WebKit an option to handle multi-touch 4572 // events later. 4573 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 4574 if (mMinZoomScale < mMaxZoomScale) { 4575 mScaleDetector.onTouchEvent(ev); 4576 if (mScaleDetector.isInProgress()) { 4577 mLastTouchTime = eventTime; 4578 return true; 4579 } 4580 x = mScaleDetector.getFocusX(); 4581 y = mScaleDetector.getFocusY(); 4582 action = ev.getAction() & MotionEvent.ACTION_MASK; 4583 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4584 cancelTouch(); 4585 action = MotionEvent.ACTION_DOWN; 4586 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4587 // set mLastTouchX/Y to the remaining point 4588 mLastTouchX = x; 4589 mLastTouchY = y; 4590 } else if (action == MotionEvent.ACTION_MOVE) { 4591 // negative x or y indicate it is on the edge, skip it. 4592 if (x < 0 || y < 0) { 4593 return true; 4594 } 4595 } 4596 } else { 4597 // if the page disallow zoom, skip multi-pointer action 4598 return true; 4599 } 4600 } else { 4601 action = ev.getAction(); 4602 x = ev.getX(); 4603 y = ev.getY(); 4604 } 4605 4606 // Due to the touch screen edge effect, a touch closer to the edge 4607 // always snapped to the edge. As getViewWidth() can be different from 4608 // getWidth() due to the scrollbar, adjusting the point to match 4609 // getViewWidth(). Same applied to the height. 4610 if (x > getViewWidth() - 1) { 4611 x = getViewWidth() - 1; 4612 } 4613 if (y > getViewHeightWithTitle() - 1) { 4614 y = getViewHeightWithTitle() - 1; 4615 } 4616 4617 float fDeltaX = mLastTouchX - x; 4618 float fDeltaY = mLastTouchY - y; 4619 int deltaX = (int) fDeltaX; 4620 int deltaY = (int) fDeltaY; 4621 int contentX = viewToContentX((int) x + mScrollX); 4622 int contentY = viewToContentY((int) y + mScrollY); 4623 4624 switch (action) { 4625 case MotionEvent.ACTION_DOWN: { 4626 mPreventDefault = PREVENT_DEFAULT_NO; 4627 mConfirmMove = false; 4628 if (!mScroller.isFinished()) { 4629 // stop the current scroll animation, but if this is 4630 // the start of a fling, allow it to add to the current 4631 // fling's velocity 4632 mScroller.abortAnimation(); 4633 mTouchMode = TOUCH_DRAG_START_MODE; 4634 mConfirmMove = true; 4635 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 4636 } else if (!inFullScreenMode() && mShiftIsPressed) { 4637 mSelectX = mScrollX + (int) x; 4638 mSelectY = mScrollY + (int) y; 4639 mTouchMode = TOUCH_SELECT_MODE; 4640 if (DebugFlags.WEB_VIEW) { 4641 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 4642 } 4643 nativeMoveSelection(contentX, contentY, false); 4644 mTouchSelection = mExtendSelection = true; 4645 invalidate(); // draw the i-beam instead of the arrow 4646 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4647 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4648 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4649 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4650 } else { 4651 // commit the short press action for the previous tap 4652 doShortPress(); 4653 mTouchMode = TOUCH_INIT_MODE; 4654 mDeferTouchProcess = (!inFullScreenMode() 4655 && mForwardTouchEvents) ? hitFocusedPlugin( 4656 contentX, contentY) : false; 4657 } 4658 } else { // the normal case 4659 mPreviewZoomOnly = false; 4660 mTouchMode = TOUCH_INIT_MODE; 4661 mDeferTouchProcess = (!inFullScreenMode() 4662 && mForwardTouchEvents) ? hitFocusedPlugin( 4663 contentX, contentY) : false; 4664 mWebViewCore.sendMessage( 4665 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4666 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4667 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 4668 (eventTime - mLastTouchUpTime), eventTime); 4669 } 4670 } 4671 // Trigger the link 4672 if (mTouchMode == TOUCH_INIT_MODE 4673 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4674 mPrivateHandler.sendEmptyMessageDelayed( 4675 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 4676 mPrivateHandler.sendEmptyMessageDelayed( 4677 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 4678 if (inFullScreenMode() || mDeferTouchProcess) { 4679 mPreventDefault = PREVENT_DEFAULT_YES; 4680 } else if (mForwardTouchEvents) { 4681 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 4682 } else { 4683 mPreventDefault = PREVENT_DEFAULT_NO; 4684 } 4685 // pass the touch events from UI thread to WebCore thread 4686 if (shouldForwardTouchEvent()) { 4687 TouchEventData ted = new TouchEventData(); 4688 ted.mAction = action; 4689 ted.mX = contentX; 4690 ted.mY = contentY; 4691 ted.mMetaState = ev.getMetaState(); 4692 ted.mReprocess = mDeferTouchProcess; 4693 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4694 if (mDeferTouchProcess) { 4695 // still needs to set them for compute deltaX/Y 4696 mLastTouchX = x; 4697 mLastTouchY = y; 4698 break; 4699 } 4700 if (!inFullScreenMode()) { 4701 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4702 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4703 action, 0), TAP_TIMEOUT); 4704 } 4705 } 4706 } 4707 startTouch(x, y, eventTime); 4708 break; 4709 } 4710 case MotionEvent.ACTION_MOVE: { 4711 boolean firstMove = false; 4712 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 4713 >= mTouchSlopSquare) { 4714 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4715 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4716 mConfirmMove = true; 4717 firstMove = true; 4718 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4719 mTouchMode = TOUCH_INIT_MODE; 4720 } 4721 } 4722 // pass the touch events from UI thread to WebCore thread 4723 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 4724 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 4725 TouchEventData ted = new TouchEventData(); 4726 ted.mAction = action; 4727 ted.mX = contentX; 4728 ted.mY = contentY; 4729 ted.mMetaState = ev.getMetaState(); 4730 ted.mReprocess = mDeferTouchProcess; 4731 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4732 mLastSentTouchTime = eventTime; 4733 if (mDeferTouchProcess) { 4734 break; 4735 } 4736 if (firstMove && !inFullScreenMode()) { 4737 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4738 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4739 action, 0), TAP_TIMEOUT); 4740 } 4741 } 4742 if (mTouchMode == TOUCH_DONE_MODE 4743 || mPreventDefault == PREVENT_DEFAULT_YES) { 4744 // no dragging during scroll zoom animation, or when prevent 4745 // default is yes 4746 break; 4747 } 4748 if (mVelocityTracker == null) { 4749 Log.e(LOGTAG, "Got null mVelocityTracker when " 4750 + "mPreventDefault = " + mPreventDefault 4751 + " mDeferTouchProcess = " + mDeferTouchProcess 4752 + " mTouchMode = " + mTouchMode); 4753 } 4754 mVelocityTracker.addMovement(ev); 4755 if (mTouchMode != TOUCH_DRAG_MODE) { 4756 if (mTouchMode == TOUCH_SELECT_MODE) { 4757 mSelectX = mScrollX + (int) x; 4758 mSelectY = mScrollY + (int) y; 4759 if (DebugFlags.WEB_VIEW) { 4760 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 4761 } 4762 nativeMoveSelection(contentX, contentY, true); 4763 invalidate(); 4764 break; 4765 } 4766 if (!mConfirmMove) { 4767 break; 4768 } 4769 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 4770 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 4771 // track mLastTouchTime as we may need to do fling at 4772 // ACTION_UP 4773 mLastTouchTime = eventTime; 4774 break; 4775 } 4776 // if it starts nearly horizontal or vertical, enforce it 4777 int ax = Math.abs(deltaX); 4778 int ay = Math.abs(deltaY); 4779 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4780 mSnapScrollMode = SNAP_X; 4781 mSnapPositive = deltaX > 0; 4782 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4783 mSnapScrollMode = SNAP_Y; 4784 mSnapPositive = deltaY > 0; 4785 } 4786 4787 mTouchMode = TOUCH_DRAG_MODE; 4788 mLastTouchX = x; 4789 mLastTouchY = y; 4790 fDeltaX = 0.0f; 4791 fDeltaY = 0.0f; 4792 deltaX = 0; 4793 deltaY = 0; 4794 4795 startDrag(); 4796 } 4797 4798 if (mDragTrackerHandler != null) { 4799 mDragTrackerHandler.dragTo(x, y); 4800 } 4801 4802 // do pan 4803 int newScrollX = pinLocX(mScrollX + deltaX); 4804 int newDeltaX = newScrollX - mScrollX; 4805 if (deltaX != newDeltaX) { 4806 deltaX = newDeltaX; 4807 fDeltaX = (float) newDeltaX; 4808 } 4809 int newScrollY = pinLocY(mScrollY + deltaY); 4810 int newDeltaY = newScrollY - mScrollY; 4811 if (deltaY != newDeltaY) { 4812 deltaY = newDeltaY; 4813 fDeltaY = (float) newDeltaY; 4814 } 4815 boolean done = false; 4816 boolean keepScrollBarsVisible = false; 4817 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 4818 keepScrollBarsVisible = done = true; 4819 } else { 4820 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4821 int ax = Math.abs(deltaX); 4822 int ay = Math.abs(deltaY); 4823 if (mSnapScrollMode == SNAP_X) { 4824 // radical change means getting out of snap mode 4825 if (ay > MAX_SLOPE_FOR_DIAG * ax 4826 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4827 mSnapScrollMode = SNAP_NONE; 4828 } 4829 // reverse direction means lock in the snap mode 4830 if (ax > MAX_SLOPE_FOR_DIAG * ay && 4831 (mSnapPositive 4832 ? deltaX < -mMinLockSnapReverseDistance 4833 : deltaX > mMinLockSnapReverseDistance)) { 4834 mSnapScrollMode |= SNAP_LOCK; 4835 } 4836 } else { 4837 // radical change means getting out of snap mode 4838 if (ax > MAX_SLOPE_FOR_DIAG * ay 4839 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4840 mSnapScrollMode = SNAP_NONE; 4841 } 4842 // reverse direction means lock in the snap mode 4843 if (ay > MAX_SLOPE_FOR_DIAG * ax && 4844 (mSnapPositive 4845 ? deltaY < -mMinLockSnapReverseDistance 4846 : deltaY > mMinLockSnapReverseDistance)) { 4847 mSnapScrollMode |= SNAP_LOCK; 4848 } 4849 } 4850 } 4851 if (mSnapScrollMode != SNAP_NONE) { 4852 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 4853 deltaY = 0; 4854 } else { 4855 deltaX = 0; 4856 } 4857 } 4858 if ((deltaX | deltaY) != 0) { 4859 if (deltaX != 0) { 4860 mLastTouchX = x; 4861 } 4862 if (deltaY != 0) { 4863 mLastTouchY = y; 4864 } 4865 mHeldMotionless = MOTIONLESS_FALSE; 4866 } else { 4867 // keep the scrollbar on the screen even there is no 4868 // scroll 4869 keepScrollBarsVisible = true; 4870 } 4871 mLastTouchTime = eventTime; 4872 mUserScroll = true; 4873 } 4874 4875 doDrag(deltaX, deltaY); 4876 4877 if (keepScrollBarsVisible) { 4878 if (mHeldMotionless != MOTIONLESS_TRUE) { 4879 mHeldMotionless = MOTIONLESS_TRUE; 4880 invalidate(); 4881 } 4882 // keep the scrollbar on the screen even there is no scroll 4883 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 4884 false); 4885 // return false to indicate that we can't pan out of the 4886 // view space 4887 return !done; 4888 } 4889 break; 4890 } 4891 case MotionEvent.ACTION_UP: { 4892 if (!isFocused()) requestFocus(); 4893 // pass the touch events from UI thread to WebCore thread 4894 if (shouldForwardTouchEvent()) { 4895 TouchEventData ted = new TouchEventData(); 4896 ted.mAction = action; 4897 ted.mX = contentX; 4898 ted.mY = contentY; 4899 ted.mMetaState = ev.getMetaState(); 4900 ted.mReprocess = mDeferTouchProcess; 4901 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4902 } 4903 mLastTouchUpTime = eventTime; 4904 switch (mTouchMode) { 4905 case TOUCH_DOUBLE_TAP_MODE: // double tap 4906 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4907 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4908 if (inFullScreenMode() || mDeferTouchProcess) { 4909 TouchEventData ted = new TouchEventData(); 4910 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 4911 ted.mX = contentX; 4912 ted.mY = contentY; 4913 ted.mMetaState = ev.getMetaState(); 4914 ted.mReprocess = mDeferTouchProcess; 4915 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4916 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 4917 doDoubleTap(); 4918 mTouchMode = TOUCH_DONE_MODE; 4919 } 4920 break; 4921 case TOUCH_SELECT_MODE: 4922 commitCopy(); 4923 mTouchSelection = false; 4924 break; 4925 case TOUCH_INIT_MODE: // tap 4926 case TOUCH_SHORTPRESS_START_MODE: 4927 case TOUCH_SHORTPRESS_MODE: 4928 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4929 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4930 if (mConfirmMove) { 4931 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 4932 " WebCore's response for touch down."); 4933 if (mPreventDefault != PREVENT_DEFAULT_YES 4934 && (computeMaxScrollX() > 0 4935 || computeMaxScrollY() > 0)) { 4936 // UI takes control back, cancel WebCore touch 4937 cancelWebCoreTouchEvent(contentX, contentY, 4938 true); 4939 // we will not rewrite drag code here, but we 4940 // will try fling if it applies. 4941 WebViewCore.reducePriority(); 4942 // to get better performance, pause updating the 4943 // picture 4944 WebViewCore.pauseUpdatePicture(mWebViewCore); 4945 // fall through to TOUCH_DRAG_MODE 4946 } else { 4947 // WebKit may consume the touch event and modify 4948 // DOM. drawContentPicture() will be called with 4949 // animateSroll as true for better performance. 4950 // Force redraw in high-quality. 4951 invalidate(); 4952 break; 4953 } 4954 } else { 4955 if (mTouchMode == TOUCH_INIT_MODE) { 4956 mPrivateHandler.sendEmptyMessageDelayed( 4957 RELEASE_SINGLE_TAP, ViewConfiguration 4958 .getDoubleTapTimeout()); 4959 } else { 4960 doShortPress(); 4961 } 4962 break; 4963 } 4964 case TOUCH_DRAG_MODE: 4965 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4966 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4967 // if the user waits a while w/o moving before the 4968 // up, we don't want to do a fling 4969 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4970 if (mVelocityTracker == null) { 4971 Log.e(LOGTAG, "Got null mVelocityTracker when " 4972 + "mPreventDefault = " 4973 + mPreventDefault 4974 + " mDeferTouchProcess = " 4975 + mDeferTouchProcess); 4976 } 4977 mVelocityTracker.addMovement(ev); 4978 // set to MOTIONLESS_IGNORE so that it won't keep 4979 // removing and sending message in 4980 // drawCoreAndCursorRing() 4981 mHeldMotionless = MOTIONLESS_IGNORE; 4982 doFling(); 4983 break; 4984 } 4985 // redraw in high-quality, as we're done dragging 4986 mHeldMotionless = MOTIONLESS_TRUE; 4987 invalidate(); 4988 // fall through 4989 case TOUCH_DRAG_START_MODE: 4990 // TOUCH_DRAG_START_MODE should not happen for the real 4991 // device as we almost certain will get a MOVE. But this 4992 // is possible on emulator. 4993 mLastVelocity = 0; 4994 WebViewCore.resumePriority(); 4995 WebViewCore.resumeUpdatePicture(mWebViewCore); 4996 break; 4997 } 4998 stopTouch(); 4999 break; 5000 } 5001 case MotionEvent.ACTION_CANCEL: { 5002 if (mTouchMode == TOUCH_DRAG_MODE) { 5003 invalidate(); 5004 } 5005 cancelWebCoreTouchEvent(contentX, contentY, false); 5006 cancelTouch(); 5007 break; 5008 } 5009 } 5010 return true; 5011 } 5012 5013 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5014 if (shouldForwardTouchEvent()) { 5015 if (removeEvents) { 5016 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5017 } 5018 TouchEventData ted = new TouchEventData(); 5019 ted.mX = x; 5020 ted.mY = y; 5021 ted.mAction = MotionEvent.ACTION_CANCEL; 5022 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5023 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5024 } 5025 } 5026 5027 private void startTouch(float x, float y, long eventTime) { 5028 // Remember where the motion event started 5029 mLastTouchX = x; 5030 mLastTouchY = y; 5031 mLastTouchTime = eventTime; 5032 mVelocityTracker = VelocityTracker.obtain(); 5033 mSnapScrollMode = SNAP_NONE; 5034 if (mDragTracker != null) { 5035 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 5036 } 5037 } 5038 5039 private void startDrag() { 5040 WebViewCore.reducePriority(); 5041 // to get better performance, pause updating the picture 5042 WebViewCore.pauseUpdatePicture(mWebViewCore); 5043 if (!mDragFromTextInput) { 5044 nativeHideCursor(); 5045 } 5046 WebSettings settings = getSettings(); 5047 if (settings.supportZoom() 5048 && settings.getBuiltInZoomControls() 5049 && !getZoomButtonsController().isVisible() 5050 && mMinZoomScale < mMaxZoomScale 5051 && (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5052 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF)) { 5053 mZoomButtonsController.setVisible(true); 5054 int count = settings.getDoubleTapToastCount(); 5055 if (mInZoomOverview && count > 0) { 5056 settings.setDoubleTapToastCount(--count); 5057 Toast.makeText(mContext, 5058 com.android.internal.R.string.double_tap_toast, 5059 Toast.LENGTH_LONG).show(); 5060 } 5061 } 5062 } 5063 5064 private void doDrag(int deltaX, int deltaY) { 5065 if ((deltaX | deltaY) != 0) { 5066 scrollBy(deltaX, deltaY); 5067 } 5068 if (!getSettings().getBuiltInZoomControls()) { 5069 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 5070 if (mZoomControls != null && showPlusMinus) { 5071 if (mZoomControls.getVisibility() == View.VISIBLE) { 5072 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5073 } else { 5074 mZoomControls.show(showPlusMinus, false); 5075 } 5076 mPrivateHandler.postDelayed(mZoomControlRunnable, 5077 ZOOM_CONTROLS_TIMEOUT); 5078 } 5079 } 5080 } 5081 5082 private void stopTouch() { 5083 if (mDragTrackerHandler != null) { 5084 mDragTrackerHandler.stopDrag(); 5085 } 5086 // we also use mVelocityTracker == null to tell us that we are 5087 // not "moving around", so we can take the slower/prettier 5088 // mode in the drawing code 5089 if (mVelocityTracker != null) { 5090 mVelocityTracker.recycle(); 5091 mVelocityTracker = null; 5092 } 5093 } 5094 5095 private void cancelTouch() { 5096 if (mDragTrackerHandler != null) { 5097 mDragTrackerHandler.stopDrag(); 5098 } 5099 // we also use mVelocityTracker == null to tell us that we are 5100 // not "moving around", so we can take the slower/prettier 5101 // mode in the drawing code 5102 if (mVelocityTracker != null) { 5103 mVelocityTracker.recycle(); 5104 mVelocityTracker = null; 5105 } 5106 if (mTouchMode == TOUCH_DRAG_MODE) { 5107 WebViewCore.resumePriority(); 5108 WebViewCore.resumeUpdatePicture(mWebViewCore); 5109 } 5110 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5111 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5112 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5113 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5114 mHeldMotionless = MOTIONLESS_TRUE; 5115 mTouchMode = TOUCH_DONE_MODE; 5116 nativeHideCursor(); 5117 } 5118 5119 private long mTrackballFirstTime = 0; 5120 private long mTrackballLastTime = 0; 5121 private float mTrackballRemainsX = 0.0f; 5122 private float mTrackballRemainsY = 0.0f; 5123 private int mTrackballXMove = 0; 5124 private int mTrackballYMove = 0; 5125 private boolean mExtendSelection = false; 5126 private boolean mTouchSelection = false; 5127 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5128 private static final int TRACKBALL_TIMEOUT = 200; 5129 private static final int TRACKBALL_WAIT = 100; 5130 private static final int TRACKBALL_SCALE = 400; 5131 private static final int TRACKBALL_SCROLL_COUNT = 5; 5132 private static final int TRACKBALL_MOVE_COUNT = 10; 5133 private static final int TRACKBALL_MULTIPLIER = 3; 5134 private static final int SELECT_CURSOR_OFFSET = 16; 5135 private int mSelectX = 0; 5136 private int mSelectY = 0; 5137 private boolean mFocusSizeChanged = false; 5138 private boolean mShiftIsPressed = false; 5139 private boolean mTrackballDown = false; 5140 private long mTrackballUpTime = 0; 5141 private long mLastCursorTime = 0; 5142 private Rect mLastCursorBounds; 5143 5144 // Set by default; BrowserActivity clears to interpret trackball data 5145 // directly for movement. Currently, the framework only passes 5146 // arrow key events, not trackball events, from one child to the next 5147 private boolean mMapTrackballToArrowKeys = true; 5148 5149 public void setMapTrackballToArrowKeys(boolean setMap) { 5150 mMapTrackballToArrowKeys = setMap; 5151 } 5152 5153 void resetTrackballTime() { 5154 mTrackballLastTime = 0; 5155 } 5156 5157 @Override 5158 public boolean onTrackballEvent(MotionEvent ev) { 5159 long time = ev.getEventTime(); 5160 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5161 if (ev.getY() > 0) pageDown(true); 5162 if (ev.getY() < 0) pageUp(true); 5163 return true; 5164 } 5165 boolean shiftPressed = mShiftIsPressed && (mNativeClass == 0 5166 || !nativeFocusIsPlugin()); 5167 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5168 if (shiftPressed) { 5169 return true; // discard press if copy in progress 5170 } 5171 mTrackballDown = true; 5172 if (mNativeClass == 0) { 5173 return false; 5174 } 5175 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5176 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5177 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5178 nativeSelectBestAt(mLastCursorBounds); 5179 } 5180 if (DebugFlags.WEB_VIEW) { 5181 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5182 + " time=" + time 5183 + " mLastCursorTime=" + mLastCursorTime); 5184 } 5185 if (isInTouchMode()) requestFocusFromTouch(); 5186 return false; // let common code in onKeyDown at it 5187 } 5188 if (ev.getAction() == MotionEvent.ACTION_UP) { 5189 // LONG_PRESS_CENTER is set in common onKeyDown 5190 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5191 mTrackballDown = false; 5192 mTrackballUpTime = time; 5193 if (shiftPressed) { 5194 if (mExtendSelection) { 5195 commitCopy(); 5196 } else { 5197 mExtendSelection = true; 5198 invalidate(); // draw the i-beam instead of the arrow 5199 } 5200 return true; // discard press if copy in progress 5201 } 5202 if (DebugFlags.WEB_VIEW) { 5203 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5204 + " time=" + time 5205 ); 5206 } 5207 return false; // let common code in onKeyUp at it 5208 } 5209 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 5210 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5211 return false; 5212 } 5213 if (mTrackballDown) { 5214 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5215 return true; // discard move if trackball is down 5216 } 5217 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5218 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5219 return true; 5220 } 5221 // TODO: alternatively we can do panning as touch does 5222 switchOutDrawHistory(); 5223 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5224 if (DebugFlags.WEB_VIEW) { 5225 Log.v(LOGTAG, "onTrackballEvent time=" 5226 + time + " last=" + mTrackballLastTime); 5227 } 5228 mTrackballFirstTime = time; 5229 mTrackballXMove = mTrackballYMove = 0; 5230 } 5231 mTrackballLastTime = time; 5232 if (DebugFlags.WEB_VIEW) { 5233 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5234 } 5235 mTrackballRemainsX += ev.getX(); 5236 mTrackballRemainsY += ev.getY(); 5237 doTrackball(time); 5238 return true; 5239 } 5240 5241 void moveSelection(float xRate, float yRate) { 5242 if (mNativeClass == 0) 5243 return; 5244 int width = getViewWidth(); 5245 int height = getViewHeight(); 5246 mSelectX += xRate; 5247 mSelectY += yRate; 5248 int maxX = width + mScrollX; 5249 int maxY = height + mScrollY; 5250 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5251 , mSelectX)); 5252 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5253 , mSelectY)); 5254 if (DebugFlags.WEB_VIEW) { 5255 Log.v(LOGTAG, "moveSelection" 5256 + " mSelectX=" + mSelectX 5257 + " mSelectY=" + mSelectY 5258 + " mScrollX=" + mScrollX 5259 + " mScrollY=" + mScrollY 5260 + " xRate=" + xRate 5261 + " yRate=" + yRate 5262 ); 5263 } 5264 nativeMoveSelection(viewToContentX(mSelectX), 5265 viewToContentY(mSelectY), mExtendSelection); 5266 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5267 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5268 : 0; 5269 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5270 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5271 : 0; 5272 pinScrollBy(scrollX, scrollY, true, 0); 5273 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5274 requestRectangleOnScreen(select); 5275 invalidate(); 5276 } 5277 5278 private int scaleTrackballX(float xRate, int width) { 5279 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5280 int nextXMove = xMove; 5281 if (xMove > 0) { 5282 if (xMove > mTrackballXMove) { 5283 xMove -= mTrackballXMove; 5284 } 5285 } else if (xMove < mTrackballXMove) { 5286 xMove -= mTrackballXMove; 5287 } 5288 mTrackballXMove = nextXMove; 5289 return xMove; 5290 } 5291 5292 private int scaleTrackballY(float yRate, int height) { 5293 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5294 int nextYMove = yMove; 5295 if (yMove > 0) { 5296 if (yMove > mTrackballYMove) { 5297 yMove -= mTrackballYMove; 5298 } 5299 } else if (yMove < mTrackballYMove) { 5300 yMove -= mTrackballYMove; 5301 } 5302 mTrackballYMove = nextYMove; 5303 return yMove; 5304 } 5305 5306 private int keyCodeToSoundsEffect(int keyCode) { 5307 switch(keyCode) { 5308 case KeyEvent.KEYCODE_DPAD_UP: 5309 return SoundEffectConstants.NAVIGATION_UP; 5310 case KeyEvent.KEYCODE_DPAD_RIGHT: 5311 return SoundEffectConstants.NAVIGATION_RIGHT; 5312 case KeyEvent.KEYCODE_DPAD_DOWN: 5313 return SoundEffectConstants.NAVIGATION_DOWN; 5314 case KeyEvent.KEYCODE_DPAD_LEFT: 5315 return SoundEffectConstants.NAVIGATION_LEFT; 5316 } 5317 throw new IllegalArgumentException("keyCode must be one of " + 5318 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5319 "KEYCODE_DPAD_LEFT}."); 5320 } 5321 5322 private void doTrackball(long time) { 5323 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5324 if (elapsed == 0) { 5325 elapsed = TRACKBALL_TIMEOUT; 5326 } 5327 float xRate = mTrackballRemainsX * 1000 / elapsed; 5328 float yRate = mTrackballRemainsY * 1000 / elapsed; 5329 int viewWidth = getViewWidth(); 5330 int viewHeight = getViewHeight(); 5331 if (mShiftIsPressed && (mNativeClass == 0 || !nativeFocusIsPlugin())) { 5332 moveSelection(scaleTrackballX(xRate, viewWidth), 5333 scaleTrackballY(yRate, viewHeight)); 5334 mTrackballRemainsX = mTrackballRemainsY = 0; 5335 return; 5336 } 5337 float ax = Math.abs(xRate); 5338 float ay = Math.abs(yRate); 5339 float maxA = Math.max(ax, ay); 5340 if (DebugFlags.WEB_VIEW) { 5341 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5342 + " xRate=" + xRate 5343 + " yRate=" + yRate 5344 + " mTrackballRemainsX=" + mTrackballRemainsX 5345 + " mTrackballRemainsY=" + mTrackballRemainsY); 5346 } 5347 int width = mContentWidth - viewWidth; 5348 int height = mContentHeight - viewHeight; 5349 if (width < 0) width = 0; 5350 if (height < 0) height = 0; 5351 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5352 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5353 maxA = Math.max(ax, ay); 5354 int count = Math.max(0, (int) maxA); 5355 int oldScrollX = mScrollX; 5356 int oldScrollY = mScrollY; 5357 if (count > 0) { 5358 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5359 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5360 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5361 KeyEvent.KEYCODE_DPAD_RIGHT; 5362 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5363 if (DebugFlags.WEB_VIEW) { 5364 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5365 + " count=" + count 5366 + " mTrackballRemainsX=" + mTrackballRemainsX 5367 + " mTrackballRemainsY=" + mTrackballRemainsY); 5368 } 5369 if (mNativeClass != 0 && nativeFocusIsPlugin()) { 5370 for (int i = 0; i < count; i++) { 5371 letPluginHandleNavKey(selectKeyCode, time, true); 5372 } 5373 letPluginHandleNavKey(selectKeyCode, time, false); 5374 } else if (navHandledKey(selectKeyCode, count, false, time)) { 5375 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5376 } 5377 mTrackballRemainsX = mTrackballRemainsY = 0; 5378 } 5379 if (count >= TRACKBALL_SCROLL_COUNT) { 5380 int xMove = scaleTrackballX(xRate, width); 5381 int yMove = scaleTrackballY(yRate, height); 5382 if (DebugFlags.WEB_VIEW) { 5383 Log.v(LOGTAG, "doTrackball pinScrollBy" 5384 + " count=" + count 5385 + " xMove=" + xMove + " yMove=" + yMove 5386 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5387 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5388 ); 5389 } 5390 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5391 xMove = 0; 5392 } 5393 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5394 yMove = 0; 5395 } 5396 if (xMove != 0 || yMove != 0) { 5397 pinScrollBy(xMove, yMove, true, 0); 5398 } 5399 mUserScroll = true; 5400 } 5401 } 5402 5403 private int computeMaxScrollX() { 5404 return Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5405 } 5406 5407 private int computeMaxScrollY() { 5408 return Math.max(computeVerticalScrollRange() + getTitleHeight() 5409 - getViewHeightWithTitle(), 0); 5410 } 5411 5412 public void flingScroll(int vx, int vy) { 5413 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 5414 computeMaxScrollY()); 5415 invalidate(); 5416 } 5417 5418 private void doFling() { 5419 if (mVelocityTracker == null) { 5420 return; 5421 } 5422 int maxX = computeMaxScrollX(); 5423 int maxY = computeMaxScrollY(); 5424 5425 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5426 int vx = (int) mVelocityTracker.getXVelocity(); 5427 int vy = (int) mVelocityTracker.getYVelocity(); 5428 5429 if (mSnapScrollMode != SNAP_NONE) { 5430 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5431 vy = 0; 5432 } else { 5433 vx = 0; 5434 } 5435 } 5436 if (true /* EMG release: make our fling more like Maps' */) { 5437 // maps cuts their velocity in half 5438 vx = vx * 3 / 4; 5439 vy = vy * 3 / 4; 5440 } 5441 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5442 WebViewCore.resumePriority(); 5443 WebViewCore.resumeUpdatePicture(mWebViewCore); 5444 return; 5445 } 5446 float currentVelocity = mScroller.getCurrVelocity(); 5447 if (mLastVelocity > 0 && currentVelocity > 0) { 5448 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5449 - Math.atan2(vy, vx))); 5450 final float circle = (float) (Math.PI) * 2.0f; 5451 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5452 vx += currentVelocity * mLastVelX / mLastVelocity; 5453 vy += currentVelocity * mLastVelY / mLastVelocity; 5454 if (DebugFlags.WEB_VIEW) { 5455 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5456 } 5457 } else if (DebugFlags.WEB_VIEW) { 5458 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5459 } 5460 } else if (DebugFlags.WEB_VIEW) { 5461 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5462 + " current=" + currentVelocity 5463 + " vx=" + vx + " vy=" + vy 5464 + " maxX=" + maxX + " maxY=" + maxY 5465 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5466 } 5467 mLastVelX = vx; 5468 mLastVelY = vy; 5469 mLastVelocity = (float) Math.hypot(vx, vy); 5470 5471 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 5472 // TODO: duration is calculated based on velocity, if the range is 5473 // small, the animation will stop before duration is up. We may 5474 // want to calculate how long the animation is going to run to precisely 5475 // resume the webcore update. 5476 final int time = mScroller.getDuration(); 5477 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5478 awakenScrollBars(time); 5479 invalidate(); 5480 } 5481 5482 private boolean zoomWithPreview(float scale, boolean updateTextWrapScale) { 5483 float oldScale = mActualScale; 5484 mInitialScrollX = mScrollX; 5485 mInitialScrollY = mScrollY; 5486 5487 // snap to DEFAULT_SCALE if it is close 5488 if (Math.abs(scale - mDefaultScale) < MINIMUM_SCALE_INCREMENT) { 5489 scale = mDefaultScale; 5490 } 5491 5492 setNewZoomScale(scale, updateTextWrapScale, false); 5493 5494 if (oldScale != mActualScale) { 5495 // use mZoomPickerScale to see zoom preview first 5496 mZoomStart = SystemClock.uptimeMillis(); 5497 mInvInitialZoomScale = 1.0f / oldScale; 5498 mInvFinalZoomScale = 1.0f / mActualScale; 5499 mZoomScale = mActualScale; 5500 WebViewCore.pauseUpdatePicture(mWebViewCore); 5501 invalidate(); 5502 return true; 5503 } else { 5504 return false; 5505 } 5506 } 5507 5508 /** 5509 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5510 * in charge of installing this view to the view hierarchy. This view will 5511 * become visible when the user starts scrolling via touch and fade away if 5512 * the user does not interact with it. 5513 * <p/> 5514 * API version 3 introduces a built-in zoom mechanism that is shown 5515 * automatically by the MapView. This is the preferred approach for 5516 * showing the zoom UI. 5517 * 5518 * @deprecated The built-in zoom mechanism is preferred, see 5519 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5520 */ 5521 @Deprecated 5522 public View getZoomControls() { 5523 if (!getSettings().supportZoom()) { 5524 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5525 return null; 5526 } 5527 if (mZoomControls == null) { 5528 mZoomControls = createZoomControls(); 5529 5530 /* 5531 * need to be set to VISIBLE first so that getMeasuredHeight() in 5532 * {@link #onSizeChanged()} can return the measured value for proper 5533 * layout. 5534 */ 5535 mZoomControls.setVisibility(View.VISIBLE); 5536 mZoomControlRunnable = new Runnable() { 5537 public void run() { 5538 5539 /* Don't dismiss the controls if the user has 5540 * focus on them. Wait and check again later. 5541 */ 5542 if (!mZoomControls.hasFocus()) { 5543 mZoomControls.hide(); 5544 } else { 5545 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5546 mPrivateHandler.postDelayed(mZoomControlRunnable, 5547 ZOOM_CONTROLS_TIMEOUT); 5548 } 5549 } 5550 }; 5551 } 5552 return mZoomControls; 5553 } 5554 5555 private ExtendedZoomControls createZoomControls() { 5556 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 5557 , null); 5558 zoomControls.setOnZoomInClickListener(new OnClickListener() { 5559 public void onClick(View v) { 5560 // reset time out 5561 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5562 mPrivateHandler.postDelayed(mZoomControlRunnable, 5563 ZOOM_CONTROLS_TIMEOUT); 5564 zoomIn(); 5565 } 5566 }); 5567 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 5568 public void onClick(View v) { 5569 // reset time out 5570 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5571 mPrivateHandler.postDelayed(mZoomControlRunnable, 5572 ZOOM_CONTROLS_TIMEOUT); 5573 zoomOut(); 5574 } 5575 }); 5576 return zoomControls; 5577 } 5578 5579 /** 5580 * Gets the {@link ZoomButtonsController} which can be used to add 5581 * additional buttons to the zoom controls window. 5582 * 5583 * @return The instance of {@link ZoomButtonsController} used by this class, 5584 * or null if it is unavailable. 5585 * @hide 5586 */ 5587 public ZoomButtonsController getZoomButtonsController() { 5588 if (mZoomButtonsController == null) { 5589 mZoomButtonsController = new ZoomButtonsController(this); 5590 mZoomButtonsController.setOnZoomListener(mZoomListener); 5591 // ZoomButtonsController positions the buttons at the bottom, but in 5592 // the middle. Change their layout parameters so they appear on the 5593 // right. 5594 View controls = mZoomButtonsController.getZoomControls(); 5595 ViewGroup.LayoutParams params = controls.getLayoutParams(); 5596 if (params instanceof FrameLayout.LayoutParams) { 5597 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) params; 5598 frameParams.gravity = Gravity.RIGHT; 5599 } 5600 } 5601 return mZoomButtonsController; 5602 } 5603 5604 /** 5605 * Perform zoom in in the webview 5606 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 5607 */ 5608 public boolean zoomIn() { 5609 // TODO: alternatively we can disallow this during draw history mode 5610 switchOutDrawHistory(); 5611 mInZoomOverview = false; 5612 // Center zooming to the center of the screen. 5613 mZoomCenterX = getViewWidth() * .5f; 5614 mZoomCenterY = getViewHeight() * .5f; 5615 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5616 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5617 return zoomWithPreview(mActualScale * 1.25f, true); 5618 } 5619 5620 /** 5621 * Perform zoom out in the webview 5622 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 5623 */ 5624 public boolean zoomOut() { 5625 // TODO: alternatively we can disallow this during draw history mode 5626 switchOutDrawHistory(); 5627 // Center zooming to the center of the screen. 5628 mZoomCenterX = getViewWidth() * .5f; 5629 mZoomCenterY = getViewHeight() * .5f; 5630 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5631 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5632 return zoomWithPreview(mActualScale * 0.8f, true); 5633 } 5634 5635 private void updateSelection() { 5636 if (mNativeClass == 0) { 5637 return; 5638 } 5639 // mLastTouchX and mLastTouchY are the point in the current viewport 5640 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5641 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5642 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 5643 contentX + mNavSlop, contentY + mNavSlop); 5644 nativeSelectBestAt(rect); 5645 } 5646 5647 /** 5648 * Scroll the focused text field/area to match the WebTextView 5649 * @param xPercent New x position of the WebTextView from 0 to 1. 5650 * @param y New y position of the WebTextView in view coordinates 5651 */ 5652 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 5653 if (!inEditingMode() || mWebViewCore == null) { 5654 return; 5655 } 5656 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 5657 // Since this position is relative to the top of the text input 5658 // field, we do not need to take the title bar's height into 5659 // consideration. 5660 viewToContentDimension(y), 5661 new Float(xPercent)); 5662 } 5663 5664 /** 5665 * Set our starting point and time for a drag from the WebTextView. 5666 */ 5667 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 5668 if (!inEditingMode()) { 5669 return; 5670 } 5671 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 5672 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 5673 mLastTouchTime = eventTime; 5674 if (!mScroller.isFinished()) { 5675 abortAnimation(); 5676 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5677 } 5678 mSnapScrollMode = SNAP_NONE; 5679 mVelocityTracker = VelocityTracker.obtain(); 5680 mTouchMode = TOUCH_DRAG_START_MODE; 5681 } 5682 5683 /** 5684 * Given a motion event from the WebTextView, set its location to our 5685 * coordinates, and handle the event. 5686 */ 5687 /*package*/ boolean textFieldDrag(MotionEvent event) { 5688 if (!inEditingMode()) { 5689 return false; 5690 } 5691 mDragFromTextInput = true; 5692 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 5693 (float) (mWebTextView.getTop() - mScrollY)); 5694 boolean result = onTouchEvent(event); 5695 mDragFromTextInput = false; 5696 return result; 5697 } 5698 5699 /** 5700 * Due a touch up from a WebTextView. This will be handled by webkit to 5701 * change the selection. 5702 * @param event MotionEvent in the WebTextView's coordinates. 5703 */ 5704 /*package*/ void touchUpOnTextField(MotionEvent event) { 5705 if (!inEditingMode()) { 5706 return; 5707 } 5708 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 5709 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 5710 nativeMotionUp(x, y, mNavSlop); 5711 } 5712 5713 /** 5714 * Called when pressing the center key or trackball on a textfield. 5715 */ 5716 /*package*/ void centerKeyPressOnTextField() { 5717 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 5718 nativeCursorNodePointer()); 5719 } 5720 5721 private void doShortPress() { 5722 if (mNativeClass == 0) { 5723 return; 5724 } 5725 if (mPreventDefault == PREVENT_DEFAULT_YES) { 5726 return; 5727 } 5728 mTouchMode = TOUCH_DONE_MODE; 5729 switchOutDrawHistory(); 5730 // mLastTouchX and mLastTouchY are the point in the current viewport 5731 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5732 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5733 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 5734 WebViewCore.MotionUpData motionUpData = new WebViewCore 5735 .MotionUpData(); 5736 motionUpData.mFrame = nativeCacheHitFramePointer(); 5737 motionUpData.mNode = nativeCacheHitNodePointer(); 5738 motionUpData.mBounds = nativeCacheHitNodeBounds(); 5739 motionUpData.mX = contentX; 5740 motionUpData.mY = contentY; 5741 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 5742 motionUpData); 5743 } else { 5744 doMotionUp(contentX, contentY); 5745 } 5746 } 5747 5748 private void doMotionUp(int contentX, int contentY) { 5749 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 5750 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 5751 } 5752 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 5753 playSoundEffect(SoundEffectConstants.CLICK); 5754 } 5755 } 5756 5757 /* 5758 * Return true if the view (Plugin) is fully visible and maximized inside 5759 * the WebView. 5760 */ 5761 private boolean isPluginFitOnScreen(ViewManager.ChildView view) { 5762 int viewWidth = getViewWidth(); 5763 int viewHeight = getViewHeightWithTitle(); 5764 float scale = Math.min((float) viewWidth / view.width, 5765 (float) viewHeight / view.height); 5766 if (scale < mMinZoomScale) { 5767 scale = mMinZoomScale; 5768 } else if (scale > mMaxZoomScale) { 5769 scale = mMaxZoomScale; 5770 } 5771 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 5772 if (contentToViewX(view.x) >= mScrollX 5773 && contentToViewX(view.x + view.width) <= mScrollX 5774 + viewWidth 5775 && contentToViewY(view.y) >= mScrollY 5776 && contentToViewY(view.y + view.height) <= mScrollY 5777 + viewHeight) { 5778 return true; 5779 } 5780 } 5781 return false; 5782 } 5783 5784 /* 5785 * Maximize and center the rectangle, specified in the document coordinate 5786 * space, inside the WebView. If the zoom doesn't need to be changed, do an 5787 * animated scroll to center it. If the zoom needs to be changed, find the 5788 * zoom center and do a smooth zoom transition. 5789 */ 5790 private void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 5791 int viewWidth = getViewWidth(); 5792 int viewHeight = getViewHeightWithTitle(); 5793 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 5794 / docHeight); 5795 if (scale < mMinZoomScale) { 5796 scale = mMinZoomScale; 5797 } else if (scale > mMaxZoomScale) { 5798 scale = mMaxZoomScale; 5799 } 5800 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 5801 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 5802 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 5803 true, 0); 5804 } else { 5805 float oldScreenX = docX * mActualScale - mScrollX; 5806 float rectViewX = docX * scale; 5807 float rectViewWidth = docWidth * scale; 5808 float newMaxWidth = mContentWidth * scale; 5809 float newScreenX = (viewWidth - rectViewWidth) / 2; 5810 // pin the newX to the WebView 5811 if (newScreenX > rectViewX) { 5812 newScreenX = rectViewX; 5813 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 5814 newScreenX = viewWidth - (newMaxWidth - rectViewX); 5815 } 5816 mZoomCenterX = (oldScreenX * scale - newScreenX * mActualScale) 5817 / (scale - mActualScale); 5818 float oldScreenY = docY * mActualScale + getTitleHeight() 5819 - mScrollY; 5820 float rectViewY = docY * scale + getTitleHeight(); 5821 float rectViewHeight = docHeight * scale; 5822 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 5823 float newScreenY = (viewHeight - rectViewHeight) / 2; 5824 // pin the newY to the WebView 5825 if (newScreenY > rectViewY) { 5826 newScreenY = rectViewY; 5827 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 5828 newScreenY = viewHeight - (newMaxHeight - rectViewY); 5829 } 5830 mZoomCenterY = (oldScreenY * scale - newScreenY * mActualScale) 5831 / (scale - mActualScale); 5832 zoomWithPreview(scale, false); 5833 } 5834 } 5835 5836 void dismissZoomControl() { 5837 if (mWebViewCore == null) { 5838 // maybe called after WebView's destroy(). As we can't get settings, 5839 // just hide zoom control for both styles. 5840 if (mZoomButtonsController != null) { 5841 mZoomButtonsController.setVisible(false); 5842 } 5843 if (mZoomControls != null) { 5844 mZoomControls.hide(); 5845 } 5846 return; 5847 } 5848 WebSettings settings = getSettings(); 5849 if (settings.getBuiltInZoomControls()) { 5850 if (mZoomButtonsController != null) { 5851 mZoomButtonsController.setVisible(false); 5852 } 5853 } else { 5854 if (mZoomControlRunnable != null) { 5855 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5856 } 5857 if (mZoomControls != null) { 5858 mZoomControls.hide(); 5859 } 5860 } 5861 } 5862 5863 // Rule for double tap: 5864 // 1. if the current scale is not same as the text wrap scale and layout 5865 // algorithm is NARROW_COLUMNS, fit to column; 5866 // 2. if the current state is not overview mode, change to overview mode; 5867 // 3. if the current state is overview mode, change to default scale. 5868 private void doDoubleTap() { 5869 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 5870 return; 5871 } 5872 mZoomCenterX = mLastTouchX; 5873 mZoomCenterY = mLastTouchY; 5874 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5875 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5876 WebSettings settings = getSettings(); 5877 settings.setDoubleTapToastCount(0); 5878 // remove the zoom control after double tap 5879 dismissZoomControl(); 5880 ViewManager.ChildView plugin = mViewManager.hitTest(mAnchorX, mAnchorY); 5881 if (plugin != null) { 5882 if (isPluginFitOnScreen(plugin)) { 5883 mInZoomOverview = true; 5884 // Force the titlebar fully reveal in overview mode 5885 if (mScrollY < getTitleHeight()) mScrollY = 0; 5886 zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth, 5887 true); 5888 } else { 5889 mInZoomOverview = false; 5890 centerFitRect(plugin.x, plugin.y, plugin.width, plugin.height); 5891 } 5892 return; 5893 } 5894 boolean zoomToDefault = false; 5895 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 5896 && (Math.abs(mActualScale - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT)) { 5897 setNewZoomScale(mActualScale, true, true); 5898 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 5899 if (Math.abs(mActualScale - overviewScale) < MINIMUM_SCALE_INCREMENT) { 5900 mInZoomOverview = true; 5901 } 5902 } else if (!mInZoomOverview) { 5903 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 5904 if (Math.abs(mActualScale - newScale) >= MINIMUM_SCALE_INCREMENT) { 5905 mInZoomOverview = true; 5906 // Force the titlebar fully reveal in overview mode 5907 if (mScrollY < getTitleHeight()) mScrollY = 0; 5908 zoomWithPreview(newScale, true); 5909 } else if (Math.abs(mActualScale - mDefaultScale) >= MINIMUM_SCALE_INCREMENT) { 5910 zoomToDefault = true; 5911 } 5912 } else { 5913 zoomToDefault = true; 5914 } 5915 if (zoomToDefault) { 5916 mInZoomOverview = false; 5917 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 5918 if (left != NO_LEFTEDGE) { 5919 // add a 5pt padding to the left edge. 5920 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 5921 - mScrollX; 5922 // Re-calculate the zoom center so that the new scroll x will be 5923 // on the left edge. 5924 if (viewLeft > 0) { 5925 mZoomCenterX = viewLeft * mDefaultScale 5926 / (mDefaultScale - mActualScale); 5927 } else { 5928 scrollBy(viewLeft, 0); 5929 mZoomCenterX = 0; 5930 } 5931 } 5932 zoomWithPreview(mDefaultScale, true); 5933 } 5934 } 5935 5936 // Called by JNI to handle a touch on a node representing an email address, 5937 // address, or phone number 5938 private void overrideLoading(String url) { 5939 mCallbackProxy.uiOverrideUrlLoading(url); 5940 } 5941 5942 @Override 5943 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 5944 boolean result = false; 5945 if (inEditingMode()) { 5946 result = mWebTextView.requestFocus(direction, 5947 previouslyFocusedRect); 5948 } else { 5949 result = super.requestFocus(direction, previouslyFocusedRect); 5950 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 5951 // For cases such as GMail, where we gain focus from a direction, 5952 // we want to move to the first available link. 5953 // FIXME: If there are no visible links, we may not want to 5954 int fakeKeyDirection = 0; 5955 switch(direction) { 5956 case View.FOCUS_UP: 5957 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 5958 break; 5959 case View.FOCUS_DOWN: 5960 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 5961 break; 5962 case View.FOCUS_LEFT: 5963 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 5964 break; 5965 case View.FOCUS_RIGHT: 5966 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 5967 break; 5968 default: 5969 return result; 5970 } 5971 if (mNativeClass != 0 && !nativeHasCursorNode()) { 5972 navHandledKey(fakeKeyDirection, 1, true, 0); 5973 } 5974 } 5975 } 5976 return result; 5977 } 5978 5979 @Override 5980 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5981 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 5982 5983 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5984 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5985 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5986 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5987 5988 int measuredHeight = heightSize; 5989 int measuredWidth = widthSize; 5990 5991 // Grab the content size from WebViewCore. 5992 int contentHeight = contentToViewDimension(mContentHeight); 5993 int contentWidth = contentToViewDimension(mContentWidth); 5994 5995// Log.d(LOGTAG, "------- measure " + heightMode); 5996 5997 if (heightMode != MeasureSpec.EXACTLY) { 5998 mHeightCanMeasure = true; 5999 measuredHeight = contentHeight; 6000 if (heightMode == MeasureSpec.AT_MOST) { 6001 // If we are larger than the AT_MOST height, then our height can 6002 // no longer be measured and we should scroll internally. 6003 if (measuredHeight > heightSize) { 6004 measuredHeight = heightSize; 6005 mHeightCanMeasure = false; 6006 } 6007 } 6008 } else { 6009 mHeightCanMeasure = false; 6010 } 6011 if (mNativeClass != 0) { 6012 nativeSetHeightCanMeasure(mHeightCanMeasure); 6013 } 6014 // For the width, always use the given size unless unspecified. 6015 if (widthMode == MeasureSpec.UNSPECIFIED) { 6016 mWidthCanMeasure = true; 6017 measuredWidth = contentWidth; 6018 } else { 6019 mWidthCanMeasure = false; 6020 } 6021 6022 synchronized (this) { 6023 setMeasuredDimension(measuredWidth, measuredHeight); 6024 } 6025 } 6026 6027 @Override 6028 public boolean requestChildRectangleOnScreen(View child, 6029 Rect rect, 6030 boolean immediate) { 6031 rect.offset(child.getLeft() - child.getScrollX(), 6032 child.getTop() - child.getScrollY()); 6033 6034 Rect content = new Rect(viewToContentX(mScrollX), 6035 viewToContentY(mScrollY), 6036 viewToContentX(mScrollX + getWidth() 6037 - getVerticalScrollbarWidth()), 6038 viewToContentY(mScrollY + getViewHeightWithTitle())); 6039 content = nativeSubtractLayers(content); 6040 int screenTop = contentToViewY(content.top); 6041 int screenBottom = contentToViewY(content.bottom); 6042 int height = screenBottom - screenTop; 6043 int scrollYDelta = 0; 6044 6045 if (rect.bottom > screenBottom) { 6046 int oneThirdOfScreenHeight = height / 3; 6047 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6048 // If the rectangle is too tall to fit in the bottom two thirds 6049 // of the screen, place it at the top. 6050 scrollYDelta = rect.top - screenTop; 6051 } else { 6052 // If the rectangle will still fit on screen, we want its 6053 // top to be in the top third of the screen. 6054 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6055 } 6056 } else if (rect.top < screenTop) { 6057 scrollYDelta = rect.top - screenTop; 6058 } 6059 6060 int screenLeft = contentToViewX(content.left); 6061 int screenRight = contentToViewX(content.right); 6062 int width = screenRight - screenLeft; 6063 int scrollXDelta = 0; 6064 6065 if (rect.right > screenRight && rect.left > screenLeft) { 6066 if (rect.width() > width) { 6067 scrollXDelta += (rect.left - screenLeft); 6068 } else { 6069 scrollXDelta += (rect.right - screenRight); 6070 } 6071 } else if (rect.left < screenLeft) { 6072 scrollXDelta -= (screenLeft - rect.left); 6073 } 6074 6075 if ((scrollYDelta | scrollXDelta) != 0) { 6076 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6077 } 6078 6079 return false; 6080 } 6081 6082 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6083 String replace, int newStart, int newEnd) { 6084 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6085 arg.mReplace = replace; 6086 arg.mNewStart = newStart; 6087 arg.mNewEnd = newEnd; 6088 mTextGeneration++; 6089 arg.mTextGeneration = mTextGeneration; 6090 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6091 } 6092 6093 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6094 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6095 arg.mEvent = event; 6096 arg.mCurrentText = currentText; 6097 // Increase our text generation number, and pass it to webcore thread 6098 mTextGeneration++; 6099 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6100 // WebKit's document state is not saved until about to leave the page. 6101 // To make sure the host application, like Browser, has the up to date 6102 // document state when it goes to background, we force to save the 6103 // document state. 6104 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6105 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6106 cursorData(), 1000); 6107 } 6108 6109 /* package */ synchronized WebViewCore getWebViewCore() { 6110 return mWebViewCore; 6111 } 6112 6113 //------------------------------------------------------------------------- 6114 // Methods can be called from a separate thread, like WebViewCore 6115 // If it needs to call the View system, it has to send message. 6116 //------------------------------------------------------------------------- 6117 6118 /** 6119 * General handler to receive message coming from webkit thread 6120 */ 6121 class PrivateHandler extends Handler { 6122 @Override 6123 public void handleMessage(Message msg) { 6124 // exclude INVAL_RECT_MSG_ID since it is frequently output 6125 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6126 if (msg.what >= FIRST_PRIVATE_MSG_ID 6127 && msg.what <= LAST_PRIVATE_MSG_ID) { 6128 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6129 - FIRST_PRIVATE_MSG_ID]); 6130 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6131 && msg.what <= LAST_PACKAGE_MSG_ID) { 6132 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6133 - FIRST_PACKAGE_MSG_ID]); 6134 } else { 6135 Log.v(LOGTAG, Integer.toString(msg.what)); 6136 } 6137 } 6138 if (mWebViewCore == null) { 6139 // after WebView's destroy() is called, skip handling messages. 6140 return; 6141 } 6142 switch (msg.what) { 6143 case REMEMBER_PASSWORD: { 6144 mDatabase.setUsernamePassword( 6145 msg.getData().getString("host"), 6146 msg.getData().getString("username"), 6147 msg.getData().getString("password")); 6148 ((Message) msg.obj).sendToTarget(); 6149 break; 6150 } 6151 case NEVER_REMEMBER_PASSWORD: { 6152 mDatabase.setUsernamePassword( 6153 msg.getData().getString("host"), null, null); 6154 ((Message) msg.obj).sendToTarget(); 6155 break; 6156 } 6157 case PREVENT_DEFAULT_TIMEOUT: { 6158 // if timeout happens, cancel it so that it won't block UI 6159 // to continue handling touch events 6160 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6161 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6162 || (msg.arg1 == MotionEvent.ACTION_MOVE 6163 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6164 cancelWebCoreTouchEvent( 6165 viewToContentX((int) mLastTouchX + mScrollX), 6166 viewToContentY((int) mLastTouchY + mScrollY), 6167 true); 6168 } 6169 break; 6170 } 6171 case SWITCH_TO_SHORTPRESS: { 6172 if (mTouchMode == TOUCH_INIT_MODE) { 6173 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6174 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6175 updateSelection(); 6176 } else { 6177 // set to TOUCH_SHORTPRESS_MODE so that it won't 6178 // trigger double tap any more 6179 mTouchMode = TOUCH_SHORTPRESS_MODE; 6180 } 6181 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6182 mTouchMode = TOUCH_DONE_MODE; 6183 } 6184 break; 6185 } 6186 case SWITCH_TO_LONGPRESS: { 6187 if (inFullScreenMode() || mDeferTouchProcess) { 6188 TouchEventData ted = new TouchEventData(); 6189 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6190 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 6191 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 6192 // metaState for long press is tricky. Should it be the 6193 // state when the press started or when the press was 6194 // released? Or some intermediary key state? For 6195 // simplicity for now, we don't set it. 6196 ted.mMetaState = 0; 6197 ted.mReprocess = mDeferTouchProcess; 6198 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6199 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6200 mTouchMode = TOUCH_DONE_MODE; 6201 performLongClick(); 6202 rebuildWebTextView(); 6203 } 6204 break; 6205 } 6206 case RELEASE_SINGLE_TAP: { 6207 doShortPress(); 6208 break; 6209 } 6210 case SCROLL_BY_MSG_ID: 6211 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6212 break; 6213 case SYNC_SCROLL_TO_MSG_ID: 6214 if (mUserScroll) { 6215 // if user has scrolled explicitly, don't sync the 6216 // scroll position any more 6217 mUserScroll = false; 6218 break; 6219 } 6220 // fall through 6221 case SCROLL_TO_MSG_ID: 6222 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6223 // if we can't scroll to the exact position due to pin, 6224 // send a message to WebCore to re-scroll when we get a 6225 // new picture 6226 mUserScroll = false; 6227 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6228 msg.arg1, msg.arg2); 6229 } 6230 break; 6231 case SPAWN_SCROLL_TO_MSG_ID: 6232 spawnContentScrollTo(msg.arg1, msg.arg2); 6233 break; 6234 case UPDATE_ZOOM_RANGE: { 6235 WebViewCore.RestoreState restoreState 6236 = (WebViewCore.RestoreState) msg.obj; 6237 // mScrollX contains the new minPrefWidth 6238 updateZoomRange(restoreState, getViewWidth(), 6239 restoreState.mScrollX, false); 6240 break; 6241 } 6242 case NEW_PICTURE_MSG_ID: { 6243 // If we've previously delayed deleting a root 6244 // layer, do it now. 6245 if (mDelayedDeleteRootLayer) { 6246 mDelayedDeleteRootLayer = false; 6247 nativeSetRootLayer(0); 6248 } 6249 WebSettings settings = mWebViewCore.getSettings(); 6250 // called for new content 6251 final int viewWidth = getViewWidth(); 6252 final WebViewCore.DrawData draw = 6253 (WebViewCore.DrawData) msg.obj; 6254 final Point viewSize = draw.mViewPoint; 6255 boolean useWideViewport = settings.getUseWideViewPort(); 6256 WebViewCore.RestoreState restoreState = draw.mRestoreState; 6257 boolean hasRestoreState = restoreState != null; 6258 if (hasRestoreState) { 6259 updateZoomRange(restoreState, viewSize.x, 6260 draw.mMinPrefWidth, true); 6261 if (!mDrawHistory) { 6262 mInZoomOverview = false; 6263 6264 if (mInitialScaleInPercent > 0) { 6265 setNewZoomScale(mInitialScaleInPercent / 100.0f, 6266 mInitialScaleInPercent != mTextWrapScale * 100, 6267 false); 6268 } else if (restoreState.mViewScale > 0) { 6269 mTextWrapScale = restoreState.mTextWrapScale; 6270 setNewZoomScale(restoreState.mViewScale, false, 6271 false); 6272 } else { 6273 mInZoomOverview = useWideViewport 6274 && settings.getLoadWithOverviewMode(); 6275 float scale; 6276 if (mInZoomOverview) { 6277 scale = (float) viewWidth 6278 / DEFAULT_VIEWPORT_WIDTH; 6279 } else { 6280 scale = restoreState.mTextWrapScale; 6281 } 6282 setNewZoomScale(scale, Math.abs(scale 6283 - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT, 6284 false); 6285 } 6286 setContentScrollTo(restoreState.mScrollX, 6287 restoreState.mScrollY); 6288 // As we are on a new page, remove the WebTextView. This 6289 // is necessary for page loads driven by webkit, and in 6290 // particular when the user was on a password field, so 6291 // the WebTextView was visible. 6292 clearTextEntry(false); 6293 // update the zoom buttons as the scale can be changed 6294 if (getSettings().getBuiltInZoomControls()) { 6295 updateZoomButtonsEnabled(); 6296 } 6297 } 6298 } 6299 // We update the layout (i.e. request a layout from the 6300 // view system) if the last view size that we sent to 6301 // WebCore matches the view size of the picture we just 6302 // received in the fixed dimension. 6303 final boolean updateLayout = viewSize.x == mLastWidthSent 6304 && viewSize.y == mLastHeightSent; 6305 recordNewContentSize(draw.mWidthHeight.x, 6306 draw.mWidthHeight.y 6307 + (mFindIsUp ? mFindHeight : 0), updateLayout); 6308 if (DebugFlags.WEB_VIEW) { 6309 Rect b = draw.mInvalRegion.getBounds(); 6310 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6311 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6312 } 6313 invalidateContentRect(draw.mInvalRegion.getBounds()); 6314 if (mPictureListener != null) { 6315 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6316 } 6317 if (useWideViewport) { 6318 // limit mZoomOverviewWidth upper bound to 6319 // sMaxViewportWidth so that if the page doesn't behave 6320 // well, the WebView won't go insane. limit the lower 6321 // bound to match the default scale for mobile sites. 6322 mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math 6323 .max((int) (viewWidth / mDefaultScale), Math 6324 .max(draw.mMinPrefWidth, 6325 draw.mViewPoint.x))); 6326 } 6327 if (!mMinZoomScaleFixed) { 6328 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 6329 } 6330 if (!mDrawHistory && mInZoomOverview) { 6331 // fit the content width to the current view. Ignore 6332 // the rounding error case. 6333 if (Math.abs((viewWidth * mInvActualScale) 6334 - mZoomOverviewWidth) > 1) { 6335 setNewZoomScale((float) viewWidth 6336 / mZoomOverviewWidth, Math.abs(mActualScale 6337 - mTextWrapScale) < MINIMUM_SCALE_INCREMENT, 6338 false); 6339 } 6340 } 6341 if (draw.mFocusSizeChanged && inEditingMode()) { 6342 mFocusSizeChanged = true; 6343 } 6344 if (hasRestoreState) { 6345 mViewManager.postReadyToDrawAll(); 6346 } 6347 break; 6348 } 6349 case WEBCORE_INITIALIZED_MSG_ID: 6350 // nativeCreate sets mNativeClass to a non-zero value 6351 nativeCreate(msg.arg1); 6352 break; 6353 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6354 // Make sure that the textfield is currently focused 6355 // and representing the same node as the pointer. 6356 if (inEditingMode() && 6357 mWebTextView.isSameTextField(msg.arg1)) { 6358 if (msg.getData().getBoolean("password")) { 6359 Spannable text = (Spannable) mWebTextView.getText(); 6360 int start = Selection.getSelectionStart(text); 6361 int end = Selection.getSelectionEnd(text); 6362 mWebTextView.setInPassword(true); 6363 // Restore the selection, which may have been 6364 // ruined by setInPassword. 6365 Spannable pword = 6366 (Spannable) mWebTextView.getText(); 6367 Selection.setSelection(pword, start, end); 6368 // If the text entry has created more events, ignore 6369 // this one. 6370 } else if (msg.arg2 == mTextGeneration) { 6371 mWebTextView.setTextAndKeepSelection( 6372 (String) msg.obj); 6373 } 6374 } 6375 break; 6376 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 6377 displaySoftKeyboard(true); 6378 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 6379 case UPDATE_TEXT_SELECTION_MSG_ID: 6380 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6381 (WebViewCore.TextSelectionData) msg.obj); 6382 break; 6383 case RETURN_LABEL: 6384 if (inEditingMode() 6385 && mWebTextView.isSameTextField(msg.arg1)) { 6386 mWebTextView.setHint((String) msg.obj); 6387 InputMethodManager imm 6388 = InputMethodManager.peekInstance(); 6389 // The hint is propagated to the IME in 6390 // onCreateInputConnection. If the IME is already 6391 // active, restart it so that its hint text is updated. 6392 if (imm != null && imm.isActive(mWebTextView)) { 6393 imm.restartInput(mWebTextView); 6394 } 6395 } 6396 break; 6397 case MOVE_OUT_OF_PLUGIN: 6398 navHandledKey(msg.arg1, 1, false, 0); 6399 break; 6400 case UPDATE_TEXT_ENTRY_MSG_ID: 6401 // this is sent after finishing resize in WebViewCore. Make 6402 // sure the text edit box is still on the screen. 6403 if (inEditingMode() && nativeCursorIsTextInput()) { 6404 mWebTextView.bringIntoView(); 6405 rebuildWebTextView(); 6406 } 6407 break; 6408 case CLEAR_TEXT_ENTRY: 6409 clearTextEntry(false); 6410 break; 6411 case INVAL_RECT_MSG_ID: { 6412 Rect r = (Rect)msg.obj; 6413 if (r == null) { 6414 invalidate(); 6415 } else { 6416 // we need to scale r from content into view coords, 6417 // which viewInvalidate() does for us 6418 viewInvalidate(r.left, r.top, r.right, r.bottom); 6419 } 6420 break; 6421 } 6422 case IMMEDIATE_REPAINT_MSG_ID: { 6423 invalidate(); 6424 break; 6425 } 6426 case SET_ROOT_LAYER_MSG_ID: { 6427 if (0 == msg.arg1) { 6428 // Null indicates deleting the old layer, but 6429 // don't actually do so until we've got the 6430 // new page to display. 6431 mDelayedDeleteRootLayer = true; 6432 } else { 6433 mDelayedDeleteRootLayer = false; 6434 nativeSetRootLayer(msg.arg1); 6435 invalidate(); 6436 } 6437 break; 6438 } 6439 case REQUEST_FORM_DATA: 6440 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6441 if (mWebTextView.isSameTextField(msg.arg1)) { 6442 mWebTextView.setAdapterCustom(adapter); 6443 } 6444 break; 6445 case RESUME_WEBCORE_PRIORITY: 6446 WebViewCore.resumePriority(); 6447 WebViewCore.resumeUpdatePicture(mWebViewCore); 6448 break; 6449 6450 case LONG_PRESS_CENTER: 6451 // as this is shared by keydown and trackballdown, reset all 6452 // the states 6453 mGotCenterDown = false; 6454 mTrackballDown = false; 6455 performLongClick(); 6456 break; 6457 6458 case WEBCORE_NEED_TOUCH_EVENTS: 6459 mForwardTouchEvents = (msg.arg1 != 0); 6460 break; 6461 6462 case PREVENT_TOUCH_ID: 6463 if (inFullScreenMode()) { 6464 break; 6465 } 6466 if (msg.obj == null) { 6467 if (msg.arg1 == MotionEvent.ACTION_DOWN 6468 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 6469 // if prevent default is called from WebCore, UI 6470 // will not handle the rest of the touch events any 6471 // more. 6472 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6473 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 6474 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 6475 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6476 // the return for the first ACTION_MOVE will decide 6477 // whether UI will handle touch or not. Currently no 6478 // support for alternating prevent default 6479 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6480 : PREVENT_DEFAULT_NO; 6481 } 6482 } else if (msg.arg2 == 0) { 6483 // prevent default is not called in WebCore, so the 6484 // message needs to be reprocessed in UI 6485 TouchEventData ted = (TouchEventData) msg.obj; 6486 switch (ted.mAction) { 6487 case MotionEvent.ACTION_DOWN: 6488 mLastDeferTouchX = contentToViewX(ted.mX) 6489 - mScrollX; 6490 mLastDeferTouchY = contentToViewY(ted.mY) 6491 - mScrollY; 6492 mDeferTouchMode = TOUCH_INIT_MODE; 6493 break; 6494 case MotionEvent.ACTION_MOVE: { 6495 // no snapping in defer process 6496 int x = contentToViewX(ted.mX) - mScrollX; 6497 int y = contentToViewY(ted.mY) - mScrollY; 6498 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 6499 mDeferTouchMode = TOUCH_DRAG_MODE; 6500 mLastDeferTouchX = x; 6501 mLastDeferTouchY = y; 6502 startDrag(); 6503 } 6504 int deltaX = pinLocX((int) (mScrollX 6505 + mLastDeferTouchX - x)) 6506 - mScrollX; 6507 int deltaY = pinLocY((int) (mScrollY 6508 + mLastDeferTouchY - y)) 6509 - mScrollY; 6510 doDrag(deltaX, deltaY); 6511 if (deltaX != 0) mLastDeferTouchX = x; 6512 if (deltaY != 0) mLastDeferTouchY = y; 6513 break; 6514 } 6515 case MotionEvent.ACTION_UP: 6516 case MotionEvent.ACTION_CANCEL: 6517 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 6518 // no fling in defer process 6519 WebViewCore.resumePriority(); 6520 WebViewCore.resumeUpdatePicture(mWebViewCore); 6521 } 6522 mDeferTouchMode = TOUCH_DONE_MODE; 6523 break; 6524 case WebViewCore.ACTION_DOUBLETAP: 6525 // doDoubleTap() needs mLastTouchX/Y as anchor 6526 mLastTouchX = contentToViewX(ted.mX) - mScrollX; 6527 mLastTouchY = contentToViewY(ted.mY) - mScrollY; 6528 doDoubleTap(); 6529 mDeferTouchMode = TOUCH_DONE_MODE; 6530 break; 6531 case WebViewCore.ACTION_LONGPRESS: 6532 HitTestResult hitTest = getHitTestResult(); 6533 if (hitTest != null && hitTest.mType 6534 != HitTestResult.UNKNOWN_TYPE) { 6535 performLongClick(); 6536 rebuildWebTextView(); 6537 } 6538 mDeferTouchMode = TOUCH_DONE_MODE; 6539 break; 6540 } 6541 } 6542 break; 6543 6544 case REQUEST_KEYBOARD: 6545 if (msg.arg1 == 0) { 6546 hideSoftKeyboard(); 6547 } else { 6548 displaySoftKeyboard(false); 6549 } 6550 break; 6551 6552 case FIND_AGAIN: 6553 // Ignore if find has been dismissed. 6554 if (mFindIsUp) { 6555 findAll(mLastFind); 6556 } 6557 break; 6558 6559 case DRAG_HELD_MOTIONLESS: 6560 mHeldMotionless = MOTIONLESS_TRUE; 6561 invalidate(); 6562 // fall through to keep scrollbars awake 6563 6564 case AWAKEN_SCROLL_BARS: 6565 if (mTouchMode == TOUCH_DRAG_MODE 6566 && mHeldMotionless == MOTIONLESS_TRUE) { 6567 awakenScrollBars(ViewConfiguration 6568 .getScrollDefaultDelay(), false); 6569 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6570 .obtainMessage(AWAKEN_SCROLL_BARS), 6571 ViewConfiguration.getScrollDefaultDelay()); 6572 } 6573 break; 6574 6575 case DO_MOTION_UP: 6576 doMotionUp(msg.arg1, msg.arg2); 6577 break; 6578 6579 case SHOW_FULLSCREEN: { 6580 View view = (View) msg.obj; 6581 int npp = msg.arg1; 6582 6583 if (mFullScreenHolder != null) { 6584 Log.w(LOGTAG, "Should not have another full screen."); 6585 mFullScreenHolder.dismiss(); 6586 } 6587 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 6588 mFullScreenHolder.setContentView(view); 6589 mFullScreenHolder.setCancelable(false); 6590 mFullScreenHolder.setCanceledOnTouchOutside(false); 6591 mFullScreenHolder.show(); 6592 6593 break; 6594 } 6595 case HIDE_FULLSCREEN: 6596 if (inFullScreenMode()) { 6597 mFullScreenHolder.dismiss(); 6598 mFullScreenHolder = null; 6599 } 6600 break; 6601 6602 case DOM_FOCUS_CHANGED: 6603 if (inEditingMode()) { 6604 nativeClearCursor(); 6605 rebuildWebTextView(); 6606 } 6607 break; 6608 6609 case SHOW_RECT_MSG_ID: { 6610 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6611 int x = mScrollX; 6612 int left = contentToViewX(data.mLeft); 6613 int width = contentToViewDimension(data.mWidth); 6614 int maxWidth = contentToViewDimension(data.mContentWidth); 6615 int viewWidth = getViewWidth(); 6616 if (width < viewWidth) { 6617 // center align 6618 x += left + width / 2 - mScrollX - viewWidth / 2; 6619 } else { 6620 x += (int) (left + data.mXPercentInDoc * width 6621 - mScrollX - data.mXPercentInView * viewWidth); 6622 } 6623 if (DebugFlags.WEB_VIEW) { 6624 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6625 width + ",maxWidth=" + maxWidth + 6626 ",viewWidth=" + viewWidth + ",x=" 6627 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6628 ",xPercentInView=" + data.mXPercentInView+ ")"); 6629 } 6630 // use the passing content width to cap x as the current 6631 // mContentWidth may not be updated yet 6632 x = Math.max(0, 6633 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6634 int top = contentToViewY(data.mTop); 6635 int height = contentToViewDimension(data.mHeight); 6636 int maxHeight = contentToViewDimension(data.mContentHeight); 6637 int viewHeight = getViewHeight(); 6638 int y = (int) (top + data.mYPercentInDoc * height - 6639 data.mYPercentInView * viewHeight); 6640 if (DebugFlags.WEB_VIEW) { 6641 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6642 height + ",maxHeight=" + maxHeight + 6643 ",viewHeight=" + viewHeight + ",y=" 6644 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6645 ",yPercentInView=" + data.mYPercentInView+ ")"); 6646 } 6647 // use the passing content height to cap y as the current 6648 // mContentHeight may not be updated yet 6649 y = Math.max(0, 6650 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6651 // We need to take into account the visible title height 6652 // when scrolling since y is an absolute view position. 6653 y = Math.max(0, y - getVisibleTitleHeight()); 6654 scrollTo(x, y); 6655 } 6656 break; 6657 6658 case CENTER_FIT_RECT: 6659 Rect r = (Rect)msg.obj; 6660 mInZoomOverview = false; 6661 centerFitRect(r.left, r.top, r.width(), r.height()); 6662 break; 6663 6664 case SET_SCROLLBAR_MODES: 6665 mHorizontalScrollBarMode = msg.arg1; 6666 mVerticalScrollBarMode = msg.arg2; 6667 break; 6668 6669 default: 6670 super.handleMessage(msg); 6671 break; 6672 } 6673 } 6674 } 6675 6676 /** 6677 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 6678 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 6679 */ 6680 private void updateTextSelectionFromMessage(int nodePointer, 6681 int textGeneration, WebViewCore.TextSelectionData data) { 6682 if (inEditingMode() 6683 && mWebTextView.isSameTextField(nodePointer) 6684 && textGeneration == mTextGeneration) { 6685 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 6686 } 6687 } 6688 6689 // Class used to use a dropdown for a <select> element 6690 private class InvokeListBox implements Runnable { 6691 // Whether the listbox allows multiple selection. 6692 private boolean mMultiple; 6693 // Passed in to a list with multiple selection to tell 6694 // which items are selected. 6695 private int[] mSelectedArray; 6696 // Passed in to a list with single selection to tell 6697 // where the initial selection is. 6698 private int mSelection; 6699 6700 private Container[] mContainers; 6701 6702 // Need these to provide stable ids to my ArrayAdapter, 6703 // which normally does not have stable ids. (Bug 1250098) 6704 private class Container extends Object { 6705 /** 6706 * Possible values for mEnabled. Keep in sync with OptionStatus in 6707 * WebViewCore.cpp 6708 */ 6709 final static int OPTGROUP = -1; 6710 final static int OPTION_DISABLED = 0; 6711 final static int OPTION_ENABLED = 1; 6712 6713 String mString; 6714 int mEnabled; 6715 int mId; 6716 6717 public String toString() { 6718 return mString; 6719 } 6720 } 6721 6722 /** 6723 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6724 * and allow filtering. 6725 */ 6726 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6727 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6728 super(context, 6729 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6730 com.android.internal.R.layout.select_dialog_singlechoice, 6731 objects); 6732 } 6733 6734 @Override 6735 public View getView(int position, View convertView, 6736 ViewGroup parent) { 6737 // Always pass in null so that we will get a new CheckedTextView 6738 // Otherwise, an item which was previously used as an <optgroup> 6739 // element (i.e. has no check), could get used as an <option> 6740 // element, which needs a checkbox/radio, but it would not have 6741 // one. 6742 convertView = super.getView(position, null, parent); 6743 Container c = item(position); 6744 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6745 // ListView does not draw dividers between disabled and 6746 // enabled elements. Use a LinearLayout to provide dividers 6747 LinearLayout layout = new LinearLayout(mContext); 6748 layout.setOrientation(LinearLayout.VERTICAL); 6749 if (position > 0) { 6750 View dividerTop = new View(mContext); 6751 dividerTop.setBackgroundResource( 6752 android.R.drawable.divider_horizontal_bright); 6753 layout.addView(dividerTop); 6754 } 6755 6756 if (Container.OPTGROUP == c.mEnabled) { 6757 // Currently select_dialog_multichoice and 6758 // select_dialog_singlechoice are CheckedTextViews. If 6759 // that changes, the class cast will no longer be valid. 6760 Assert.assertTrue( 6761 convertView instanceof CheckedTextView); 6762 ((CheckedTextView) convertView).setCheckMarkDrawable( 6763 null); 6764 } else { 6765 // c.mEnabled == Container.OPTION_DISABLED 6766 // Draw the disabled element in a disabled state. 6767 convertView.setEnabled(false); 6768 } 6769 6770 layout.addView(convertView); 6771 if (position < getCount() - 1) { 6772 View dividerBottom = new View(mContext); 6773 dividerBottom.setBackgroundResource( 6774 android.R.drawable.divider_horizontal_bright); 6775 layout.addView(dividerBottom); 6776 } 6777 return layout; 6778 } 6779 return convertView; 6780 } 6781 6782 @Override 6783 public boolean hasStableIds() { 6784 // AdapterView's onChanged method uses this to determine whether 6785 // to restore the old state. Return false so that the old (out 6786 // of date) state does not replace the new, valid state. 6787 return false; 6788 } 6789 6790 private Container item(int position) { 6791 if (position < 0 || position >= getCount()) { 6792 return null; 6793 } 6794 return (Container) getItem(position); 6795 } 6796 6797 @Override 6798 public long getItemId(int position) { 6799 Container item = item(position); 6800 if (item == null) { 6801 return -1; 6802 } 6803 return item.mId; 6804 } 6805 6806 @Override 6807 public boolean areAllItemsEnabled() { 6808 return false; 6809 } 6810 6811 @Override 6812 public boolean isEnabled(int position) { 6813 Container item = item(position); 6814 if (item == null) { 6815 return false; 6816 } 6817 return Container.OPTION_ENABLED == item.mEnabled; 6818 } 6819 } 6820 6821 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 6822 mMultiple = true; 6823 mSelectedArray = selected; 6824 6825 int length = array.length; 6826 mContainers = new Container[length]; 6827 for (int i = 0; i < length; i++) { 6828 mContainers[i] = new Container(); 6829 mContainers[i].mString = array[i]; 6830 mContainers[i].mEnabled = enabled[i]; 6831 mContainers[i].mId = i; 6832 } 6833 } 6834 6835 private InvokeListBox(String[] array, int[] enabled, int selection) { 6836 mSelection = selection; 6837 mMultiple = false; 6838 6839 int length = array.length; 6840 mContainers = new Container[length]; 6841 for (int i = 0; i < length; i++) { 6842 mContainers[i] = new Container(); 6843 mContainers[i].mString = array[i]; 6844 mContainers[i].mEnabled = enabled[i]; 6845 mContainers[i].mId = i; 6846 } 6847 } 6848 6849 /* 6850 * Whenever the data set changes due to filtering, this class ensures 6851 * that the checked item remains checked. 6852 */ 6853 private class SingleDataSetObserver extends DataSetObserver { 6854 private long mCheckedId; 6855 private ListView mListView; 6856 private Adapter mAdapter; 6857 6858 /* 6859 * Create a new observer. 6860 * @param id The ID of the item to keep checked. 6861 * @param l ListView for getting and clearing the checked states 6862 * @param a Adapter for getting the IDs 6863 */ 6864 public SingleDataSetObserver(long id, ListView l, Adapter a) { 6865 mCheckedId = id; 6866 mListView = l; 6867 mAdapter = a; 6868 } 6869 6870 public void onChanged() { 6871 // The filter may have changed which item is checked. Find the 6872 // item that the ListView thinks is checked. 6873 int position = mListView.getCheckedItemPosition(); 6874 long id = mAdapter.getItemId(position); 6875 if (mCheckedId != id) { 6876 // Clear the ListView's idea of the checked item, since 6877 // it is incorrect 6878 mListView.clearChoices(); 6879 // Search for mCheckedId. If it is in the filtered list, 6880 // mark it as checked 6881 int count = mAdapter.getCount(); 6882 for (int i = 0; i < count; i++) { 6883 if (mAdapter.getItemId(i) == mCheckedId) { 6884 mListView.setItemChecked(i, true); 6885 break; 6886 } 6887 } 6888 } 6889 } 6890 6891 public void onInvalidate() {} 6892 } 6893 6894 public void run() { 6895 final ListView listView = (ListView) LayoutInflater.from(mContext) 6896 .inflate(com.android.internal.R.layout.select_dialog, null); 6897 final MyArrayListAdapter adapter = new 6898 MyArrayListAdapter(mContext, mContainers, mMultiple); 6899 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 6900 .setView(listView).setCancelable(true) 6901 .setInverseBackgroundForced(true); 6902 6903 if (mMultiple) { 6904 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 6905 public void onClick(DialogInterface dialog, int which) { 6906 mWebViewCore.sendMessage( 6907 EventHub.LISTBOX_CHOICES, 6908 adapter.getCount(), 0, 6909 listView.getCheckedItemPositions()); 6910 }}); 6911 b.setNegativeButton(android.R.string.cancel, 6912 new DialogInterface.OnClickListener() { 6913 public void onClick(DialogInterface dialog, int which) { 6914 mWebViewCore.sendMessage( 6915 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6916 }}); 6917 } 6918 final AlertDialog dialog = b.create(); 6919 listView.setAdapter(adapter); 6920 listView.setFocusableInTouchMode(true); 6921 // There is a bug (1250103) where the checks in a ListView with 6922 // multiple items selected are associated with the positions, not 6923 // the ids, so the items do not properly retain their checks when 6924 // filtered. Do not allow filtering on multiple lists until 6925 // that bug is fixed. 6926 6927 listView.setTextFilterEnabled(!mMultiple); 6928 if (mMultiple) { 6929 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 6930 int length = mSelectedArray.length; 6931 for (int i = 0; i < length; i++) { 6932 listView.setItemChecked(mSelectedArray[i], true); 6933 } 6934 } else { 6935 listView.setOnItemClickListener(new OnItemClickListener() { 6936 public void onItemClick(AdapterView parent, View v, 6937 int position, long id) { 6938 mWebViewCore.sendMessage( 6939 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 6940 dialog.dismiss(); 6941 } 6942 }); 6943 if (mSelection != -1) { 6944 listView.setSelection(mSelection); 6945 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 6946 listView.setItemChecked(mSelection, true); 6947 DataSetObserver observer = new SingleDataSetObserver( 6948 adapter.getItemId(mSelection), listView, adapter); 6949 adapter.registerDataSetObserver(observer); 6950 } 6951 } 6952 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 6953 public void onCancel(DialogInterface dialog) { 6954 mWebViewCore.sendMessage( 6955 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6956 } 6957 }); 6958 dialog.show(); 6959 } 6960 } 6961 6962 /* 6963 * Request a dropdown menu for a listbox with multiple selection. 6964 * 6965 * @param array Labels for the listbox. 6966 * @param enabledArray State for each element in the list. See static 6967 * integers in Container class. 6968 * @param selectedArray Which positions are initally selected. 6969 */ 6970 void requestListBox(String[] array, int[] enabledArray, int[] 6971 selectedArray) { 6972 mPrivateHandler.post( 6973 new InvokeListBox(array, enabledArray, selectedArray)); 6974 } 6975 6976 private void updateZoomRange(WebViewCore.RestoreState restoreState, 6977 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 6978 if (restoreState.mMinScale == 0) { 6979 if (restoreState.mMobileSite) { 6980 if (minPrefWidth > Math.max(0, viewWidth)) { 6981 mMinZoomScale = (float) viewWidth / minPrefWidth; 6982 mMinZoomScaleFixed = false; 6983 if (updateZoomOverview) { 6984 WebSettings settings = getSettings(); 6985 mInZoomOverview = settings.getUseWideViewPort() && 6986 settings.getLoadWithOverviewMode(); 6987 } 6988 } else { 6989 mMinZoomScale = restoreState.mDefaultScale; 6990 mMinZoomScaleFixed = true; 6991 } 6992 } else { 6993 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 6994 mMinZoomScaleFixed = false; 6995 } 6996 } else { 6997 mMinZoomScale = restoreState.mMinScale; 6998 mMinZoomScaleFixed = true; 6999 } 7000 if (restoreState.mMaxScale == 0) { 7001 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 7002 } else { 7003 mMaxZoomScale = restoreState.mMaxScale; 7004 } 7005 } 7006 7007 /* 7008 * Request a dropdown menu for a listbox with single selection or a single 7009 * <select> element. 7010 * 7011 * @param array Labels for the listbox. 7012 * @param enabledArray State for each element in the list. See static 7013 * integers in Container class. 7014 * @param selection Which position is initally selected. 7015 */ 7016 void requestListBox(String[] array, int[] enabledArray, int selection) { 7017 mPrivateHandler.post( 7018 new InvokeListBox(array, enabledArray, selection)); 7019 } 7020 7021 // called by JNI 7022 private void sendMoveFocus(int frame, int node) { 7023 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7024 new WebViewCore.CursorData(frame, node, 0, 0)); 7025 } 7026 7027 // called by JNI 7028 private void sendMoveMouse(int frame, int node, int x, int y) { 7029 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7030 new WebViewCore.CursorData(frame, node, x, y)); 7031 } 7032 7033 /* 7034 * Send a mouse move event to the webcore thread. 7035 * 7036 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7037 * which wants key events, but it is not the focus. This 7038 * will make the visual appear as though nothing is in 7039 * focus. Remove the WebTextView, if present, and stop 7040 * drawing the blinking caret. 7041 * called by JNI 7042 */ 7043 private void sendMoveMouseIfLatest(boolean removeFocus) { 7044 if (removeFocus) { 7045 clearTextEntry(true); 7046 } 7047 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7048 cursorData()); 7049 } 7050 7051 // called by JNI 7052 private void sendMotionUp(int touchGeneration, 7053 int frame, int node, int x, int y) { 7054 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7055 touchUpData.mMoveGeneration = touchGeneration; 7056 touchUpData.mFrame = frame; 7057 touchUpData.mNode = node; 7058 touchUpData.mX = x; 7059 touchUpData.mY = y; 7060 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7061 } 7062 7063 7064 private int getScaledMaxXScroll() { 7065 int width; 7066 if (mHeightCanMeasure == false) { 7067 width = getViewWidth() / 4; 7068 } else { 7069 Rect visRect = new Rect(); 7070 calcOurVisibleRect(visRect); 7071 width = visRect.width() / 2; 7072 } 7073 // FIXME the divisor should be retrieved from somewhere 7074 return viewToContentX(width); 7075 } 7076 7077 private int getScaledMaxYScroll() { 7078 int height; 7079 if (mHeightCanMeasure == false) { 7080 height = getViewHeight() / 4; 7081 } else { 7082 Rect visRect = new Rect(); 7083 calcOurVisibleRect(visRect); 7084 height = visRect.height() / 2; 7085 } 7086 // FIXME the divisor should be retrieved from somewhere 7087 // the closest thing today is hard-coded into ScrollView.java 7088 // (from ScrollView.java, line 363) int maxJump = height/2; 7089 return Math.round(height * mInvActualScale); 7090 } 7091 7092 /** 7093 * Called by JNI to invalidate view 7094 */ 7095 private void viewInvalidate() { 7096 invalidate(); 7097 } 7098 7099 /** 7100 * Pass the key to the plugin. This assumes that nativeFocusIsPlugin() 7101 * returned true. 7102 */ 7103 private void letPluginHandleNavKey(int keyCode, long time, boolean down) { 7104 int keyEventAction; 7105 int eventHubAction; 7106 if (down) { 7107 keyEventAction = KeyEvent.ACTION_DOWN; 7108 eventHubAction = EventHub.KEY_DOWN; 7109 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7110 } else { 7111 keyEventAction = KeyEvent.ACTION_UP; 7112 eventHubAction = EventHub.KEY_UP; 7113 } 7114 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7115 1, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 7116 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 7117 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 7118 , 0, 0, 0); 7119 mWebViewCore.sendMessage(eventHubAction, event); 7120 } 7121 7122 // return true if the key was handled 7123 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7124 long time) { 7125 if (mNativeClass == 0) { 7126 return false; 7127 } 7128 mLastCursorTime = time; 7129 mLastCursorBounds = nativeGetCursorRingBounds(); 7130 boolean keyHandled 7131 = nativeMoveCursor(keyCode, count, noScroll) == false; 7132 if (DebugFlags.WEB_VIEW) { 7133 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7134 + " mLastCursorTime=" + mLastCursorTime 7135 + " handled=" + keyHandled); 7136 } 7137 if (keyHandled == false || mHeightCanMeasure == false) { 7138 return keyHandled; 7139 } 7140 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7141 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7142 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7143 Rect visRect = new Rect(); 7144 calcOurVisibleRect(visRect); 7145 Rect outset = new Rect(visRect); 7146 int maxXScroll = visRect.width() / 2; 7147 int maxYScroll = visRect.height() / 2; 7148 outset.inset(-maxXScroll, -maxYScroll); 7149 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7150 return keyHandled; 7151 } 7152 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7153 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7154 maxXScroll); 7155 if (maxH > 0) { 7156 pinScrollBy(maxH, 0, true, 0); 7157 } else { 7158 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7159 -maxXScroll); 7160 if (maxH < 0) { 7161 pinScrollBy(maxH, 0, true, 0); 7162 } 7163 } 7164 if (mLastCursorBounds.isEmpty()) return keyHandled; 7165 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7166 return keyHandled; 7167 } 7168 if (DebugFlags.WEB_VIEW) { 7169 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7170 + contentCursorRingBounds); 7171 } 7172 requestRectangleOnScreen(viewCursorRingBounds); 7173 mUserScroll = true; 7174 return keyHandled; 7175 } 7176 7177 /** 7178 * Set the background color. It's white by default. Pass 7179 * zero to make the view transparent. 7180 * @param color the ARGB color described by Color.java 7181 */ 7182 public void setBackgroundColor(int color) { 7183 mBackgroundColor = color; 7184 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7185 } 7186 7187 public void debugDump() { 7188 nativeDebugDump(); 7189 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7190 } 7191 7192 /** 7193 * Draw the HTML page into the specified canvas. This call ignores any 7194 * view-specific zoom, scroll offset, or other changes. It does not draw 7195 * any view-specific chrome, such as progress or URL bars. 7196 * 7197 * @hide only needs to be accessible to Browser and testing 7198 */ 7199 public void drawPage(Canvas canvas) { 7200 mWebViewCore.drawContentPicture(canvas, 0, false, false); 7201 } 7202 7203 /** 7204 * Set the time to wait between passing touches to WebCore. See also the 7205 * TOUCH_SENT_INTERVAL member for further discussion. 7206 * 7207 * @hide This is only used by the DRT test application. 7208 */ 7209 public void setTouchInterval(int interval) { 7210 mCurrentTouchInterval = interval; 7211 } 7212 7213 /** 7214 * Update our cache with updatedText. 7215 * @param updatedText The new text to put in our cache. 7216 */ 7217 /* package */ void updateCachedTextfield(String updatedText) { 7218 // Also place our generation number so that when we look at the cache 7219 // we recognize that it is up to date. 7220 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7221 } 7222 7223 private native int nativeCacheHitFramePointer(); 7224 private native Rect nativeCacheHitNodeBounds(); 7225 private native int nativeCacheHitNodePointer(); 7226 /* package */ native void nativeClearCursor(); 7227 private native void nativeCreate(int ptr); 7228 private native int nativeCursorFramePointer(); 7229 private native Rect nativeCursorNodeBounds(); 7230 private native int nativeCursorNodePointer(); 7231 /* package */ native boolean nativeCursorMatchesFocus(); 7232 private native boolean nativeCursorIntersects(Rect visibleRect); 7233 private native boolean nativeCursorIsAnchor(); 7234 private native boolean nativeCursorIsTextInput(); 7235 private native Point nativeCursorPosition(); 7236 private native String nativeCursorText(); 7237 /** 7238 * Returns true if the native cursor node says it wants to handle key events 7239 * (ala plugins). This can only be called if mNativeClass is non-zero! 7240 */ 7241 private native boolean nativeCursorWantsKeyEvents(); 7242 private native void nativeDebugDump(); 7243 private native void nativeDestroy(); 7244 private native boolean nativeEvaluateLayersAnimations(); 7245 private native void nativeDrawExtras(Canvas canvas, int extra); 7246 private native void nativeDumpDisplayTree(String urlOrNull); 7247 private native int nativeFindAll(String findLower, String findUpper); 7248 private native void nativeFindNext(boolean forward); 7249 /* package */ native int nativeFocusCandidateFramePointer(); 7250 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 7251 /* package */ native boolean nativeFocusCandidateIsPassword(); 7252 private native boolean nativeFocusCandidateIsRtlText(); 7253 private native boolean nativeFocusCandidateIsTextInput(); 7254 /* package */ native int nativeFocusCandidateMaxLength(); 7255 /* package */ native String nativeFocusCandidateName(); 7256 private native Rect nativeFocusCandidateNodeBounds(); 7257 /* package */ native int nativeFocusCandidatePointer(); 7258 private native String nativeFocusCandidateText(); 7259 private native int nativeFocusCandidateTextSize(); 7260 /** 7261 * Returns an integer corresponding to WebView.cpp::type. 7262 * See WebTextView.setType() 7263 */ 7264 private native int nativeFocusCandidateType(); 7265 private native boolean nativeFocusIsPlugin(); 7266 private native Rect nativeFocusNodeBounds(); 7267 /* package */ native int nativeFocusNodePointer(); 7268 private native Rect nativeGetCursorRingBounds(); 7269 private native String nativeGetSelection(); 7270 private native boolean nativeHasCursorNode(); 7271 private native boolean nativeHasFocusNode(); 7272 private native void nativeHideCursor(); 7273 private native String nativeImageURI(int x, int y); 7274 private native void nativeInstrumentReport(); 7275 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7276 // return true if the page has been scrolled 7277 private native boolean nativeMotionUp(int x, int y, int slop); 7278 // returns false if it handled the key 7279 private native boolean nativeMoveCursor(int keyCode, int count, 7280 boolean noScroll); 7281 private native int nativeMoveGeneration(); 7282 private native void nativeMoveSelection(int x, int y, 7283 boolean extendSelection); 7284 private native boolean nativePointInNavCache(int x, int y, int slop); 7285 // Like many other of our native methods, you must make sure that 7286 // mNativeClass is not null before calling this method. 7287 private native void nativeRecordButtons(boolean focused, 7288 boolean pressed, boolean invalidate); 7289 private native void nativeSelectBestAt(Rect rect); 7290 private native void nativeSetFindIsEmpty(); 7291 private native void nativeSetFindIsUp(boolean isUp); 7292 private native void nativeSetFollowedLink(boolean followed); 7293 private native void nativeSetHeightCanMeasure(boolean measure); 7294 private native void nativeSetRootLayer(int layer); 7295 private native void nativeSetSelectionPointer(boolean set, 7296 float scale, int x, int y, boolean extendSelection); 7297 private native void nativeSetSelectionRegion(boolean set); 7298 private native Rect nativeSubtractLayers(Rect content); 7299 private native int nativeTextGeneration(); 7300 // Never call this version except by updateCachedTextfield(String) - 7301 // we always want to pass in our generation number. 7302 private native void nativeUpdateCachedTextfield(String updatedText, 7303 int generation); 7304 // return NO_LEFTEDGE means failure. 7305 private static final int NO_LEFTEDGE = -1; 7306 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 7307} 7308