WebView.java revision d84e7d53d379c9fdfe335f40e89e2dfd6144dfea
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.app.AlertDialog; 20import android.content.Context; 21import android.content.DialogInterface; 22import android.content.Intent; 23import android.content.DialogInterface.OnCancelListener; 24import android.database.DataSetObserver; 25import android.graphics.Bitmap; 26import android.graphics.Canvas; 27import android.graphics.Color; 28import android.graphics.Picture; 29import android.graphics.Point; 30import android.graphics.Rect; 31import android.graphics.Region; 32import android.graphics.drawable.Drawable; 33import android.net.http.SslCertificate; 34import android.net.Uri; 35import android.os.Bundle; 36import android.os.Handler; 37import android.os.Message; 38import android.os.ServiceManager; 39import android.os.SystemClock; 40import android.provider.Checkin; 41import android.text.IClipboard; 42import android.text.Selection; 43import android.text.Spannable; 44import android.util.AttributeSet; 45import android.util.EventLog; 46import android.util.Log; 47import android.util.TypedValue; 48import android.view.Gravity; 49import android.view.KeyEvent; 50import android.view.LayoutInflater; 51import android.view.MotionEvent; 52import android.view.SoundEffectConstants; 53import android.view.VelocityTracker; 54import android.view.View; 55import android.view.ViewConfiguration; 56import android.view.ViewGroup; 57import android.view.ViewParent; 58import android.view.ViewTreeObserver; 59import android.view.animation.AlphaAnimation; 60import android.view.inputmethod.InputMethodManager; 61import android.webkit.WebTextView.AutoCompleteAdapter; 62import android.webkit.WebViewCore.EventHub; 63import android.widget.AbsoluteLayout; 64import android.widget.Adapter; 65import android.widget.AdapterView; 66import android.widget.ArrayAdapter; 67import android.widget.FrameLayout; 68import android.widget.ListView; 69import android.widget.Scroller; 70import android.widget.Toast; 71import android.widget.ZoomButtonsController; 72import android.widget.ZoomControls; 73import android.widget.AdapterView.OnItemClickListener; 74 75import java.io.File; 76import java.io.FileInputStream; 77import java.io.FileNotFoundException; 78import java.io.FileOutputStream; 79import java.io.IOException; 80import java.net.URLDecoder; 81import java.util.ArrayList; 82import java.util.List; 83import java.util.Map; 84 85/** 86 * <p>A View that displays web pages. This class is the basis upon which you 87 * can roll your own web browser or simply display some online content within your Activity. 88 * It uses the WebKit rendering engine to display 89 * web pages and includes methods to navigate forward and backward 90 * through a history, zoom in and out, perform text searches and more.</p> 91 * <p>To enable the built-in zoom, set 92 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 93 * (introduced in API version 3). 94 * <p>Note that, in order for your Activity to access the Internet and load web pages 95 * in a WebView, you must add the <var>INTERNET</var> permissions to your 96 * Android Manifest file:</p> 97 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 98 * 99 * <p>This must be a child of the <code><manifest></code> element.</p> 100 * 101 * <h3>Basic usage</h3> 102 * 103 * <p>By default, a WebView provides no browser-like widgets, does not 104 * enable JavaScript and errors will be ignored. If your goal is only 105 * to display some HTML as a part of your UI, this is probably fine; 106 * the user won't need to interact with the web page beyond reading 107 * it, and the web page won't need to interact with the user. If you 108 * actually want a fully blown web browser, then you probably want to 109 * invoke the Browser application with your URL rather than show it 110 * with a WebView. See {@link android.content.Intent} for more information.</p> 111 * 112 * <pre class="prettyprint"> 113 * WebView webview = new WebView(this); 114 * setContentView(webview); 115 * 116 * // Simplest usage: note that an exception will NOT be thrown 117 * // if there is an error loading this page (see below). 118 * webview.loadUrl("http://slashdot.org/"); 119 * 120 * // Of course you can also load from any string: 121 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 122 * webview.loadData(summary, "text/html", "utf-8"); 123 * // ... although note that there are restrictions on what this HTML can do. 124 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 125 * </pre> 126 * 127 * <p>A WebView has several customization points where you can add your 128 * own behavior. These are:</p> 129 * 130 * <ul> 131 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 132 * This class is called when something that might impact a 133 * browser UI happens, for instance, progress updates and 134 * JavaScript alerts are sent here. 135 * </li> 136 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 137 * It will be called when things happen that impact the 138 * rendering of the content, eg, errors or form submissions. You 139 * can also intercept URL loading here.</li> 140 * <li>Via the {@link android.webkit.WebSettings} class, which contains 141 * miscellaneous configuration. </li> 142 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 143 * This lets you bind Java objects into the WebView so they can be 144 * controlled from the web pages JavaScript.</li> 145 * </ul> 146 * 147 * <p>Here's a more complicated example, showing error handling, 148 * settings, and progress notification:</p> 149 * 150 * <pre class="prettyprint"> 151 * // Let's display the progress in the activity title bar, like the 152 * // browser app does. 153 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 154 * 155 * webview.getSettings().setJavaScriptEnabled(true); 156 * 157 * final Activity activity = this; 158 * webview.setWebChromeClient(new WebChromeClient() { 159 * public void onProgressChanged(WebView view, int progress) { 160 * // Activities and WebViews measure progress with different scales. 161 * // The progress meter will automatically disappear when we reach 100% 162 * activity.setProgress(progress * 1000); 163 * } 164 * }); 165 * webview.setWebViewClient(new WebViewClient() { 166 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 167 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 168 * } 169 * }); 170 * 171 * webview.loadUrl("http://slashdot.org/"); 172 * </pre> 173 * 174 * <h3>Cookie and window management</h3> 175 * 176 * <p>For obvious security reasons, your application has its own 177 * cache, cookie store etc - it does not share the Browser 178 * applications data. Cookies are managed on a separate thread, so 179 * operations like index building don't block the UI 180 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 181 * if you want to use cookies in your application. 182 * </p> 183 * 184 * <p>By default, requests by the HTML to open new windows are 185 * ignored. This is true whether they be opened by JavaScript or by 186 * the target attribute on a link. You can customize your 187 * WebChromeClient to provide your own behaviour for opening multiple windows, 188 * and render them in whatever manner you want.</p> 189 * 190 * <p>Standard behavior for an Activity is to be destroyed and 191 * recreated when the devices orientation is changed. This will cause 192 * the WebView to reload the current page. If you don't want that, you 193 * can set your Activity to handle the orientation and keyboardHidden 194 * changes, and then just leave the WebView alone. It'll automatically 195 * re-orient itself as appropriate.</p> 196 */ 197public class WebView extends AbsoluteLayout 198 implements ViewTreeObserver.OnGlobalFocusChangeListener, 199 ViewGroup.OnHierarchyChangeListener { 200 201 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 202 // the screen all-the-time. Good for profiling our drawing code 203 static private final boolean AUTO_REDRAW_HACK = false; 204 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 205 private boolean mAutoRedraw; 206 207 static final String LOGTAG = "webview"; 208 209 private static class ExtendedZoomControls extends FrameLayout { 210 public ExtendedZoomControls(Context context, AttributeSet attrs) { 211 super(context, attrs); 212 LayoutInflater inflater = (LayoutInflater) 213 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 214 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 215 mPlusMinusZoomControls = (ZoomControls) findViewById( 216 com.android.internal.R.id.zoomControls); 217 findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( 218 View.GONE); 219 } 220 221 public void show(boolean showZoom, boolean canZoomOut) { 222 mPlusMinusZoomControls.setVisibility( 223 showZoom ? View.VISIBLE : View.GONE); 224 fade(View.VISIBLE, 0.0f, 1.0f); 225 } 226 227 public void hide() { 228 fade(View.GONE, 1.0f, 0.0f); 229 } 230 231 private void fade(int visibility, float startAlpha, float endAlpha) { 232 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 233 anim.setDuration(500); 234 startAnimation(anim); 235 setVisibility(visibility); 236 } 237 238 public boolean hasFocus() { 239 return mPlusMinusZoomControls.hasFocus(); 240 } 241 242 public void setOnZoomInClickListener(OnClickListener listener) { 243 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 244 } 245 246 public void setOnZoomOutClickListener(OnClickListener listener) { 247 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 248 } 249 250 ZoomControls mPlusMinusZoomControls; 251 } 252 253 /** 254 * Transportation object for returning WebView across thread boundaries. 255 */ 256 public class WebViewTransport { 257 private WebView mWebview; 258 259 /** 260 * Set the WebView to the transportation object. 261 * @param webview The WebView to transport. 262 */ 263 public synchronized void setWebView(WebView webview) { 264 mWebview = webview; 265 } 266 267 /** 268 * Return the WebView object. 269 * @return WebView The transported WebView object. 270 */ 271 public synchronized WebView getWebView() { 272 return mWebview; 273 } 274 } 275 276 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 277 private final CallbackProxy mCallbackProxy; 278 279 private final WebViewDatabase mDatabase; 280 281 // SSL certificate for the main top-level page (if secure) 282 private SslCertificate mCertificate; 283 284 // Native WebView pointer that is 0 until the native object has been 285 // created. 286 private int mNativeClass; 287 // This would be final but it needs to be set to null when the WebView is 288 // destroyed. 289 private WebViewCore mWebViewCore; 290 // Handler for dispatching UI messages. 291 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 292 private WebTextView mWebTextView; 293 // Used to ignore changes to webkit text that arrives to the UI side after 294 // more key events. 295 private int mTextGeneration; 296 297 // Used by WebViewCore to create child views. 298 /* package */ final ViewManager mViewManager; 299 300 /** 301 * Position of the last touch event. 302 */ 303 private float mLastTouchX; 304 private float mLastTouchY; 305 306 /** 307 * Time of the last touch event. 308 */ 309 private long mLastTouchTime; 310 311 /** 312 * Time of the last time sending touch event to WebViewCore 313 */ 314 private long mLastSentTouchTime; 315 316 /** 317 * The minimum elapsed time before sending another ACTION_MOVE event to 318 * WebViewCore. This really should be tuned for each type of the devices. 319 * For example in Google Map api test case, it takes Dream device at least 320 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 321 * triggering the layout and drawing the picture. While the same process 322 * takes 60+ms on the current high speed device. If we make 323 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 324 * to WebViewCore queue and the real layout and draw events will be pushed 325 * to further, which slows down the refresh rate. Choose 50 to favor the 326 * current high speed devices. For Dream like devices, 100 is a better 327 * choice. Maybe make this in the buildspec later. 328 */ 329 private static final int TOUCH_SENT_INTERVAL = 50; 330 331 /** 332 * Helper class to get velocity for fling 333 */ 334 VelocityTracker mVelocityTracker; 335 private int mMaximumFling; 336 private float mLastVelocity; 337 private float mLastVelX; 338 private float mLastVelY; 339 340 /** 341 * Touch mode 342 */ 343 private int mTouchMode = TOUCH_DONE_MODE; 344 private static final int TOUCH_INIT_MODE = 1; 345 private static final int TOUCH_DRAG_START_MODE = 2; 346 private static final int TOUCH_DRAG_MODE = 3; 347 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 348 private static final int TOUCH_SHORTPRESS_MODE = 5; 349 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 350 private static final int TOUCH_DONE_MODE = 7; 351 private static final int TOUCH_SELECT_MODE = 8; 352 353 // Whether to forward the touch events to WebCore 354 private boolean mForwardTouchEvents = false; 355 356 // Whether to prevent drag during touch. The initial value depends on 357 // mForwardTouchEvents. If WebCore wants touch events, we assume it will 358 // take control of touch events unless it says no for touch down event. 359 private static final int PREVENT_DRAG_NO = 0; 360 private static final int PREVENT_DRAG_MAYBE_YES = 1; 361 private static final int PREVENT_DRAG_YES = 2; 362 private int mPreventDrag = PREVENT_DRAG_NO; 363 364 // To keep track of whether the current drag was initiated by a WebTextView, 365 // so that we know not to hide the cursor 366 boolean mDragFromTextInput; 367 368 // Whether or not to draw the cursor ring. 369 private boolean mDrawCursorRing = true; 370 371 // true if onPause has been called (and not onResume) 372 private boolean mIsPaused; 373 374 /** 375 * Customizable constant 376 */ 377 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 378 private int mTouchSlopSquare; 379 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 380 private int mDoubleTapSlopSquare; 381 // pre-computed density adjusted navigation slop 382 private int mNavSlop; 383 // This should be ViewConfiguration.getTapTimeout() 384 // But system time out is 100ms, which is too short for the browser. 385 // In the browser, if it switches out of tap too soon, jump tap won't work. 386 private static final int TAP_TIMEOUT = 200; 387 // This should be ViewConfiguration.getLongPressTimeout() 388 // But system time out is 500ms, which is too short for the browser. 389 // With a short timeout, it's difficult to treat trigger a short press. 390 private static final int LONG_PRESS_TIMEOUT = 1000; 391 // needed to avoid flinging after a pause of no movement 392 private static final int MIN_FLING_TIME = 250; 393 // The time that the Zoom Controls are visible before fading away 394 private static final long ZOOM_CONTROLS_TIMEOUT = 395 ViewConfiguration.getZoomControlsTimeout(); 396 // The amount of content to overlap between two screens when going through 397 // pages with the space bar, in pixels. 398 private static final int PAGE_SCROLL_OVERLAP = 24; 399 400 /** 401 * These prevent calling requestLayout if either dimension is fixed. This 402 * depends on the layout parameters and the measure specs. 403 */ 404 boolean mWidthCanMeasure; 405 boolean mHeightCanMeasure; 406 407 // Remember the last dimensions we sent to the native side so we can avoid 408 // sending the same dimensions more than once. 409 int mLastWidthSent; 410 int mLastHeightSent; 411 412 private int mContentWidth; // cache of value from WebViewCore 413 private int mContentHeight; // cache of value from WebViewCore 414 415 // Need to have the separate control for horizontal and vertical scrollbar 416 // style than the View's single scrollbar style 417 private boolean mOverlayHorizontalScrollbar = true; 418 private boolean mOverlayVerticalScrollbar = false; 419 420 // our standard speed. this way small distances will be traversed in less 421 // time than large distances, but we cap the duration, so that very large 422 // distances won't take too long to get there. 423 private static final int STD_SPEED = 480; // pixels per second 424 // time for the longest scroll animation 425 private static final int MAX_DURATION = 750; // milliseconds 426 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 427 private Scroller mScroller; 428 429 private boolean mWrapContent; 430 431 /** 432 * Private message ids 433 */ 434 private static final int REMEMBER_PASSWORD = 1; 435 private static final int NEVER_REMEMBER_PASSWORD = 2; 436 private static final int SWITCH_TO_SHORTPRESS = 3; 437 private static final int SWITCH_TO_LONGPRESS = 4; 438 private static final int RELEASE_SINGLE_TAP = 5; 439 private static final int REQUEST_FORM_DATA = 6; 440 private static final int RESUME_WEBCORE_UPDATE = 7; 441 442 //! arg1=x, arg2=y 443 static final int SCROLL_TO_MSG_ID = 10; 444 static final int SCROLL_BY_MSG_ID = 11; 445 //! arg1=x, arg2=y 446 static final int SPAWN_SCROLL_TO_MSG_ID = 12; 447 //! arg1=x, arg2=y 448 static final int SYNC_SCROLL_TO_MSG_ID = 13; 449 static final int NEW_PICTURE_MSG_ID = 14; 450 static final int UPDATE_TEXT_ENTRY_MSG_ID = 15; 451 static final int WEBCORE_INITIALIZED_MSG_ID = 16; 452 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 17; 453 static final int MOVE_OUT_OF_PLUGIN = 19; 454 static final int CLEAR_TEXT_ENTRY = 20; 455 static final int UPDATE_TEXT_SELECTION_MSG_ID = 21; 456 static final int UPDATE_CLIPBOARD = 22; 457 static final int LONG_PRESS_CENTER = 23; 458 static final int PREVENT_TOUCH_ID = 24; 459 static final int WEBCORE_NEED_TOUCH_EVENTS = 25; 460 // obj=Rect in doc coordinates 461 static final int INVAL_RECT_MSG_ID = 26; 462 static final int REQUEST_KEYBOARD = 27; 463 464 static final String[] HandlerDebugString = { 465 "REMEMBER_PASSWORD", // = 1; 466 "NEVER_REMEMBER_PASSWORD", // = 2; 467 "SWITCH_TO_SHORTPRESS", // = 3; 468 "SWITCH_TO_LONGPRESS", // = 4; 469 "RELEASE_SINGLE_TAP", // = 5; 470 "REQUEST_FORM_DATA", // = 6; 471 "SWITCH_TO_CLICK", // = 7; 472 "RESUME_WEBCORE_UPDATE", // = 8; 473 "9", 474 "SCROLL_TO_MSG_ID", // = 10; 475 "SCROLL_BY_MSG_ID", // = 11; 476 "SPAWN_SCROLL_TO_MSG_ID", // = 12; 477 "SYNC_SCROLL_TO_MSG_ID", // = 13; 478 "NEW_PICTURE_MSG_ID", // = 14; 479 "UPDATE_TEXT_ENTRY_MSG_ID", // = 15; 480 "WEBCORE_INITIALIZED_MSG_ID", // = 16; 481 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 17; 482 "18", // = 18; 483 "MOVE_OUT_OF_PLUGIN", // = 19; 484 "CLEAR_TEXT_ENTRY", // = 20; 485 "UPDATE_TEXT_SELECTION_MSG_ID", // = 21; 486 "UPDATE_CLIPBOARD", // = 22; 487 "LONG_PRESS_CENTER", // = 23; 488 "PREVENT_TOUCH_ID", // = 24; 489 "WEBCORE_NEED_TOUCH_EVENTS", // = 25; 490 "INVAL_RECT_MSG_ID", // = 26; 491 "REQUEST_KEYBOARD" // = 27; 492 }; 493 494 // default scale limit. Depending on the display density 495 private static float DEFAULT_MAX_ZOOM_SCALE; 496 private static float DEFAULT_MIN_ZOOM_SCALE; 497 // scale limit, which can be set through viewport meta tag in the web page 498 private float mMaxZoomScale; 499 private float mMinZoomScale; 500 private boolean mMinZoomScaleFixed = true; 501 502 // initial scale in percent. 0 means using default. 503 private int mInitialScale = 0; 504 505 // while in the zoom overview mode, the page's width is fully fit to the 506 // current window. The page is alive, in another words, you can click to 507 // follow the links. Double tap will toggle between zoom overview mode and 508 // the last zoom scale. 509 boolean mInZoomOverview = false; 510 511 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 512 // engadget always have wider mContentWidth no matter what viewport size is. 513 int mZoomOverviewWidth = WebViewCore.DEFAULT_VIEWPORT_WIDTH; 514 float mLastScale; 515 516 // default scale. Depending on the display density. 517 static int DEFAULT_SCALE_PERCENT; 518 private float mDefaultScale; 519 520 // set to true temporarily while the zoom control is being dragged 521 private boolean mPreviewZoomOnly = false; 522 523 // computed scale and inverse, from mZoomWidth. 524 private float mActualScale; 525 private float mInvActualScale; 526 // if this is non-zero, it is used on drawing rather than mActualScale 527 private float mZoomScale; 528 private float mInvInitialZoomScale; 529 private float mInvFinalZoomScale; 530 private int mInitialScrollX; 531 private int mInitialScrollY; 532 private long mZoomStart; 533 private static final int ZOOM_ANIMATION_LENGTH = 500; 534 535 private boolean mUserScroll = false; 536 537 private int mSnapScrollMode = SNAP_NONE; 538 private static final int SNAP_NONE = 1; 539 private static final int SNAP_X = 2; 540 private static final int SNAP_Y = 3; 541 private static final int SNAP_X_LOCK = 4; 542 private static final int SNAP_Y_LOCK = 5; 543 private boolean mSnapPositive; 544 545 // Used to match key downs and key ups 546 private boolean mGotKeyDown; 547 548 /* package */ static boolean mLogEvent = true; 549 private static final int EVENT_LOG_ZOOM_LEVEL_CHANGE = 70101; 550 private static final int EVENT_LOG_DOUBLE_TAP_DURATION = 70102; 551 552 // for event log 553 private long mLastTouchUpTime = 0; 554 555 /** 556 * URI scheme for telephone number 557 */ 558 public static final String SCHEME_TEL = "tel:"; 559 /** 560 * URI scheme for email address 561 */ 562 public static final String SCHEME_MAILTO = "mailto:"; 563 /** 564 * URI scheme for map address 565 */ 566 public static final String SCHEME_GEO = "geo:0,0?q="; 567 568 private int mBackgroundColor = Color.WHITE; 569 570 // Used to notify listeners of a new picture. 571 private PictureListener mPictureListener; 572 /** 573 * Interface to listen for new pictures as they change. 574 */ 575 public interface PictureListener { 576 /** 577 * Notify the listener that the picture has changed. 578 * @param view The WebView that owns the picture. 579 * @param picture The new picture. 580 */ 581 public void onNewPicture(WebView view, Picture picture); 582 } 583 584 // FIXME: Want to make this public, but need to change the API file. 585 public /*static*/ class HitTestResult { 586 /** 587 * Default HitTestResult, where the target is unknown 588 */ 589 public static final int UNKNOWN_TYPE = 0; 590 /** 591 * HitTestResult for hitting a HTML::a tag 592 */ 593 public static final int ANCHOR_TYPE = 1; 594 /** 595 * HitTestResult for hitting a phone number 596 */ 597 public static final int PHONE_TYPE = 2; 598 /** 599 * HitTestResult for hitting a map address 600 */ 601 public static final int GEO_TYPE = 3; 602 /** 603 * HitTestResult for hitting an email address 604 */ 605 public static final int EMAIL_TYPE = 4; 606 /** 607 * HitTestResult for hitting an HTML::img tag 608 */ 609 public static final int IMAGE_TYPE = 5; 610 /** 611 * HitTestResult for hitting a HTML::a tag which contains HTML::img 612 */ 613 public static final int IMAGE_ANCHOR_TYPE = 6; 614 /** 615 * HitTestResult for hitting a HTML::a tag with src=http 616 */ 617 public static final int SRC_ANCHOR_TYPE = 7; 618 /** 619 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 620 */ 621 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 622 /** 623 * HitTestResult for hitting an edit text area 624 */ 625 public static final int EDIT_TEXT_TYPE = 9; 626 627 private int mType; 628 private String mExtra; 629 630 HitTestResult() { 631 mType = UNKNOWN_TYPE; 632 } 633 634 private void setType(int type) { 635 mType = type; 636 } 637 638 private void setExtra(String extra) { 639 mExtra = extra; 640 } 641 642 public int getType() { 643 return mType; 644 } 645 646 public String getExtra() { 647 return mExtra; 648 } 649 } 650 651 // The View containing the zoom controls 652 private ExtendedZoomControls mZoomControls; 653 private Runnable mZoomControlRunnable; 654 655 private ZoomButtonsController mZoomButtonsController; 656 657 // These keep track of the center point of the zoom. They are used to 658 // determine the point around which we should zoom. 659 private float mZoomCenterX; 660 private float mZoomCenterY; 661 662 private ZoomButtonsController.OnZoomListener mZoomListener = 663 new ZoomButtonsController.OnZoomListener() { 664 665 public void onVisibilityChanged(boolean visible) { 666 if (visible) { 667 switchOutDrawHistory(); 668 updateZoomButtonsEnabled(); 669 } 670 } 671 672 public void onZoom(boolean zoomIn) { 673 if (zoomIn) { 674 zoomIn(); 675 } else { 676 zoomOut(); 677 } 678 679 updateZoomButtonsEnabled(); 680 } 681 }; 682 683 /** 684 * Construct a new WebView with a Context object. 685 * @param context A Context object used to access application assets. 686 */ 687 public WebView(Context context) { 688 this(context, null); 689 } 690 691 /** 692 * Construct a new WebView with layout parameters. 693 * @param context A Context object used to access application assets. 694 * @param attrs An AttributeSet passed to our parent. 695 */ 696 public WebView(Context context, AttributeSet attrs) { 697 this(context, attrs, com.android.internal.R.attr.webViewStyle); 698 } 699 700 /** 701 * Construct a new WebView with layout parameters and a default style. 702 * @param context A Context object used to access application assets. 703 * @param attrs An AttributeSet passed to our parent. 704 * @param defStyle The default style resource ID. 705 */ 706 public WebView(Context context, AttributeSet attrs, int defStyle) { 707 this(context, attrs, defStyle, null); 708 } 709 710 /** 711 * Construct a new WebView with layout parameters, a default style and a set 712 * of custom Javscript interfaces to be added to the WebView at initialization 713 * time. This guraratees that these interfaces will be available when the JS 714 * context is initialized. 715 * @param context A Context object used to access application assets. 716 * @param attrs An AttributeSet passed to our parent. 717 * @param defStyle The default style resource ID. 718 * @param javascriptInterfaces is a Map of intareface names, as keys, and 719 * object implementing those interfaces, as values. 720 * @hide pending API council approval. 721 */ 722 protected WebView(Context context, AttributeSet attrs, int defStyle, 723 Map<String, Object> javascriptInterfaces) { 724 super(context, attrs, defStyle); 725 init(); 726 727 mCallbackProxy = new CallbackProxy(context, this); 728 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 729 mDatabase = WebViewDatabase.getInstance(context); 730 mScroller = new Scroller(context); 731 732 mViewManager = new ViewManager(this); 733 734 mZoomButtonsController = new ZoomButtonsController(this); 735 mZoomButtonsController.setOnZoomListener(mZoomListener); 736 // ZoomButtonsController positions the buttons at the bottom, but in 737 // the middle. Change their layout parameters so they appear on the 738 // right. 739 View controls = mZoomButtonsController.getZoomControls(); 740 ViewGroup.LayoutParams params = controls.getLayoutParams(); 741 if (params instanceof FrameLayout.LayoutParams) { 742 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 743 params; 744 frameParams.gravity = Gravity.RIGHT; 745 } 746 } 747 748 private void updateZoomButtonsEnabled() { 749 boolean canZoomIn = mActualScale < mMaxZoomScale; 750 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 751 if (!canZoomIn && !canZoomOut) { 752 // Hide the zoom in and out buttons, as well as the fit to page 753 // button, if the page cannot zoom 754 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 755 } else { 756 // Bring back the hidden zoom controls. 757 mZoomButtonsController.getZoomControls() 758 .setVisibility(View.VISIBLE); 759 // Set each one individually, as a page may be able to zoom in 760 // or out. 761 mZoomButtonsController.setZoomInEnabled(canZoomIn); 762 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 763 } 764 } 765 766 private void init() { 767 setWillNotDraw(false); 768 setFocusable(true); 769 setFocusableInTouchMode(true); 770 setClickable(true); 771 setLongClickable(true); 772 773 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 774 int slop = configuration.getScaledTouchSlop(); 775 mTouchSlopSquare = slop * slop; 776 mMinLockSnapReverseDistance = slop; 777 slop = configuration.getScaledDoubleTapSlop(); 778 mDoubleTapSlopSquare = slop * slop; 779 final float density = getContext().getResources().getDisplayMetrics().density; 780 // use one line height, 16 based on our current default font, for how 781 // far we allow a touch be away from the edge of a link 782 mNavSlop = (int) (16 * density); 783 // density adjusted scale factors 784 DEFAULT_SCALE_PERCENT = (int) (100 * density); 785 mDefaultScale = density; 786 mActualScale = density; 787 mInvActualScale = 1 / density; 788 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 789 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 790 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 791 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 792 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 793 } 794 795 /* package */void updateDefaultZoomDensity(int zoomDensity) { 796 final float density = getContext().getResources().getDisplayMetrics().density 797 * 100 / zoomDensity; 798 if (Math.abs(density - mDefaultScale) > 0.01) { 799 float scaleFactor = density / mDefaultScale; 800 // adjust the limits 801 mNavSlop = (int) (16 * density); 802 DEFAULT_SCALE_PERCENT = (int) (100 * density); 803 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 804 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 805 mDefaultScale = density; 806 mMaxZoomScale *= scaleFactor; 807 mMinZoomScale *= scaleFactor; 808 setNewZoomScale(mActualScale * scaleFactor, false); 809 } 810 } 811 812 /* package */ boolean onSavePassword(String schemePlusHost, String username, 813 String password, final Message resumeMsg) { 814 boolean rVal = false; 815 if (resumeMsg == null) { 816 // null resumeMsg implies saving password silently 817 mDatabase.setUsernamePassword(schemePlusHost, username, password); 818 } else { 819 final Message remember = mPrivateHandler.obtainMessage( 820 REMEMBER_PASSWORD); 821 remember.getData().putString("host", schemePlusHost); 822 remember.getData().putString("username", username); 823 remember.getData().putString("password", password); 824 remember.obj = resumeMsg; 825 826 final Message neverRemember = mPrivateHandler.obtainMessage( 827 NEVER_REMEMBER_PASSWORD); 828 neverRemember.getData().putString("host", schemePlusHost); 829 neverRemember.getData().putString("username", username); 830 neverRemember.getData().putString("password", password); 831 neverRemember.obj = resumeMsg; 832 833 new AlertDialog.Builder(getContext()) 834 .setTitle(com.android.internal.R.string.save_password_label) 835 .setMessage(com.android.internal.R.string.save_password_message) 836 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 837 new DialogInterface.OnClickListener() { 838 public void onClick(DialogInterface dialog, int which) { 839 resumeMsg.sendToTarget(); 840 } 841 }) 842 .setNeutralButton(com.android.internal.R.string.save_password_remember, 843 new DialogInterface.OnClickListener() { 844 public void onClick(DialogInterface dialog, int which) { 845 remember.sendToTarget(); 846 } 847 }) 848 .setNegativeButton(com.android.internal.R.string.save_password_never, 849 new DialogInterface.OnClickListener() { 850 public void onClick(DialogInterface dialog, int which) { 851 neverRemember.sendToTarget(); 852 } 853 }) 854 .setOnCancelListener(new OnCancelListener() { 855 public void onCancel(DialogInterface dialog) { 856 resumeMsg.sendToTarget(); 857 } 858 }).show(); 859 // Return true so that WebViewCore will pause while the dialog is 860 // up. 861 rVal = true; 862 } 863 return rVal; 864 } 865 866 @Override 867 public void setScrollBarStyle(int style) { 868 if (style == View.SCROLLBARS_INSIDE_INSET 869 || style == View.SCROLLBARS_OUTSIDE_INSET) { 870 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 871 } else { 872 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 873 } 874 super.setScrollBarStyle(style); 875 } 876 877 /** 878 * Specify whether the horizontal scrollbar has overlay style. 879 * @param overlay TRUE if horizontal scrollbar should have overlay style. 880 */ 881 public void setHorizontalScrollbarOverlay(boolean overlay) { 882 mOverlayHorizontalScrollbar = overlay; 883 } 884 885 /** 886 * Specify whether the vertical scrollbar has overlay style. 887 * @param overlay TRUE if vertical scrollbar should have overlay style. 888 */ 889 public void setVerticalScrollbarOverlay(boolean overlay) { 890 mOverlayVerticalScrollbar = overlay; 891 } 892 893 /** 894 * Return whether horizontal scrollbar has overlay style 895 * @return TRUE if horizontal scrollbar has overlay style. 896 */ 897 public boolean overlayHorizontalScrollbar() { 898 return mOverlayHorizontalScrollbar; 899 } 900 901 /** 902 * Return whether vertical scrollbar has overlay style 903 * @return TRUE if vertical scrollbar has overlay style. 904 */ 905 public boolean overlayVerticalScrollbar() { 906 return mOverlayVerticalScrollbar; 907 } 908 909 /* 910 * Return the width of the view where the content of WebView should render 911 * to. 912 * Note: this can be called from WebCoreThread. 913 */ 914 /* package */ int getViewWidth() { 915 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 916 return getWidth(); 917 } else { 918 return getWidth() - getVerticalScrollbarWidth(); 919 } 920 } 921 922 /* 923 * returns the height of the titlebarview (if any). Does not care about 924 * scrolling 925 */ 926 private int getTitleHeight() { 927 return mTitleBar != null ? mTitleBar.getHeight() : 0; 928 } 929 930 /* 931 * Return the amount of the titlebarview (if any) that is visible 932 */ 933 private int getVisibleTitleHeight() { 934 return Math.max(getTitleHeight() - mScrollY, 0); 935 } 936 937 /* 938 * Return the height of the view where the content of WebView should render 939 * to. Note that this excludes mTitleBar, if there is one. 940 * Note: this can be called from WebCoreThread. 941 */ 942 /* package */ int getViewHeight() { 943 return getViewHeightWithTitle() - getVisibleTitleHeight(); 944 } 945 946 private int getViewHeightWithTitle() { 947 int height = getHeight(); 948 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 949 height -= getHorizontalScrollbarHeight(); 950 } 951 return height; 952 } 953 954 /** 955 * @return The SSL certificate for the main top-level page or null if 956 * there is no certificate (the site is not secure). 957 */ 958 public SslCertificate getCertificate() { 959 return mCertificate; 960 } 961 962 /** 963 * Sets the SSL certificate for the main top-level page. 964 */ 965 public void setCertificate(SslCertificate certificate) { 966 // here, the certificate can be null (if the site is not secure) 967 mCertificate = certificate; 968 } 969 970 //------------------------------------------------------------------------- 971 // Methods called by activity 972 //------------------------------------------------------------------------- 973 974 /** 975 * Save the username and password for a particular host in the WebView's 976 * internal database. 977 * @param host The host that required the credentials. 978 * @param username The username for the given host. 979 * @param password The password for the given host. 980 */ 981 public void savePassword(String host, String username, String password) { 982 mDatabase.setUsernamePassword(host, username, password); 983 } 984 985 /** 986 * Set the HTTP authentication credentials for a given host and realm. 987 * 988 * @param host The host for the credentials. 989 * @param realm The realm for the credentials. 990 * @param username The username for the password. If it is null, it means 991 * password can't be saved. 992 * @param password The password 993 */ 994 public void setHttpAuthUsernamePassword(String host, String realm, 995 String username, String password) { 996 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 997 } 998 999 /** 1000 * Retrieve the HTTP authentication username and password for a given 1001 * host & realm pair 1002 * 1003 * @param host The host for which the credentials apply. 1004 * @param realm The realm for which the credentials apply. 1005 * @return String[] if found, String[0] is username, which can be null and 1006 * String[1] is password. Return null if it can't find anything. 1007 */ 1008 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1009 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1010 } 1011 1012 /** 1013 * Destroy the internal state of the WebView. This method should be called 1014 * after the WebView has been removed from the view system. No other 1015 * methods may be called on a WebView after destroy. 1016 */ 1017 public void destroy() { 1018 clearTextEntry(); 1019 if (mWebViewCore != null) { 1020 // Set the handlers to null before destroying WebViewCore so no 1021 // more messages will be posted. 1022 mCallbackProxy.setWebViewClient(null); 1023 mCallbackProxy.setWebChromeClient(null); 1024 // Tell WebViewCore to destroy itself 1025 WebViewCore webViewCore = mWebViewCore; 1026 mWebViewCore = null; // prevent using partial webViewCore 1027 webViewCore.destroy(); 1028 // Remove any pending messages that might not be serviced yet. 1029 mPrivateHandler.removeCallbacksAndMessages(null); 1030 mCallbackProxy.removeCallbacksAndMessages(null); 1031 // Wake up the WebCore thread just in case it is waiting for a 1032 // javascript dialog. 1033 synchronized (mCallbackProxy) { 1034 mCallbackProxy.notify(); 1035 } 1036 } 1037 if (mNativeClass != 0) { 1038 nativeDestroy(); 1039 mNativeClass = 0; 1040 } 1041 } 1042 1043 /** 1044 * Enables platform notifications of data state and proxy changes. 1045 */ 1046 public static void enablePlatformNotifications() { 1047 Network.enablePlatformNotifications(); 1048 } 1049 1050 /** 1051 * If platform notifications are enabled, this should be called 1052 * from the Activity's onPause() or onStop(). 1053 */ 1054 public static void disablePlatformNotifications() { 1055 Network.disablePlatformNotifications(); 1056 } 1057 1058 /** 1059 * Sets JavaScript engine flags. 1060 * 1061 * @param flags JS engine flags in a String 1062 * 1063 * @hide pending API solidification 1064 */ 1065 public void setJsFlags(String flags) { 1066 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1067 } 1068 1069 /** 1070 * Inform WebView of the network state. This is used to set 1071 * the javascript property window.navigator.isOnline and 1072 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1073 * @param networkUp boolean indicating if network is available 1074 */ 1075 public void setNetworkAvailable(boolean networkUp) { 1076 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1077 networkUp ? 1 : 0, 0); 1078 } 1079 1080 /** 1081 * Save the state of this WebView used in 1082 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1083 * method no longer stores the display data for this WebView. The previous 1084 * behavior could potentially leak files if {@link #restoreState} was never 1085 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1086 * and restoring the display data. 1087 * @param outState The Bundle to store the WebView state. 1088 * @return The same copy of the back/forward list used to save the state. If 1089 * saveState fails, the returned list will be null. 1090 * @see #savePicture 1091 * @see #restorePicture 1092 */ 1093 public WebBackForwardList saveState(Bundle outState) { 1094 if (outState == null) { 1095 return null; 1096 } 1097 // We grab a copy of the back/forward list because a client of WebView 1098 // may have invalidated the history list by calling clearHistory. 1099 WebBackForwardList list = copyBackForwardList(); 1100 final int currentIndex = list.getCurrentIndex(); 1101 final int size = list.getSize(); 1102 // We should fail saving the state if the list is empty or the index is 1103 // not in a valid range. 1104 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1105 return null; 1106 } 1107 outState.putInt("index", currentIndex); 1108 // FIXME: This should just be a byte[][] instead of ArrayList but 1109 // Parcel.java does not have the code to handle multi-dimensional 1110 // arrays. 1111 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1112 for (int i = 0; i < size; i++) { 1113 WebHistoryItem item = list.getItemAtIndex(i); 1114 byte[] data = item.getFlattenedData(); 1115 if (data == null) { 1116 // It would be very odd to not have any data for a given history 1117 // item. And we will fail to rebuild the history list without 1118 // flattened data. 1119 return null; 1120 } 1121 history.add(data); 1122 } 1123 outState.putSerializable("history", history); 1124 if (mCertificate != null) { 1125 outState.putBundle("certificate", 1126 SslCertificate.saveState(mCertificate)); 1127 } 1128 return list; 1129 } 1130 1131 /** 1132 * Save the current display data to the Bundle given. Used in conjunction 1133 * with {@link #saveState}. 1134 * @param b A Bundle to store the display data. 1135 * @param dest The file to store the serialized picture data. Will be 1136 * overwritten with this WebView's picture data. 1137 * @return True if the picture was successfully saved. 1138 */ 1139 public boolean savePicture(Bundle b, File dest) { 1140 if (dest == null || b == null) { 1141 return false; 1142 } 1143 final Picture p = capturePicture(); 1144 try { 1145 final FileOutputStream out = new FileOutputStream(dest); 1146 p.writeToStream(out); 1147 out.close(); 1148 } catch (FileNotFoundException e){ 1149 e.printStackTrace(); 1150 } catch (IOException e) { 1151 e.printStackTrace(); 1152 } catch (RuntimeException e) { 1153 e.printStackTrace(); 1154 } 1155 if (dest.length() > 0) { 1156 b.putInt("scrollX", mScrollX); 1157 b.putInt("scrollY", mScrollY); 1158 b.putFloat("scale", mActualScale); 1159 if (mInZoomOverview) { 1160 b.putFloat("lastScale", mLastScale); 1161 } 1162 return true; 1163 } 1164 return false; 1165 } 1166 1167 /** 1168 * Restore the display data that was save in {@link #savePicture}. Used in 1169 * conjunction with {@link #restoreState}. 1170 * @param b A Bundle containing the saved display data. 1171 * @param src The file where the picture data was stored. 1172 * @return True if the picture was successfully restored. 1173 */ 1174 public boolean restorePicture(Bundle b, File src) { 1175 if (src == null || b == null) { 1176 return false; 1177 } 1178 if (src.exists()) { 1179 Picture p = null; 1180 try { 1181 final FileInputStream in = new FileInputStream(src); 1182 p = Picture.createFromStream(in); 1183 in.close(); 1184 } catch (FileNotFoundException e){ 1185 e.printStackTrace(); 1186 } catch (RuntimeException e) { 1187 e.printStackTrace(); 1188 } catch (IOException e) { 1189 e.printStackTrace(); 1190 } 1191 if (p != null) { 1192 int sx = b.getInt("scrollX", 0); 1193 int sy = b.getInt("scrollY", 0); 1194 float scale = b.getFloat("scale", 1.0f); 1195 mDrawHistory = true; 1196 mHistoryPicture = p; 1197 mScrollX = sx; 1198 mScrollY = sy; 1199 mHistoryWidth = Math.round(p.getWidth() * scale); 1200 mHistoryHeight = Math.round(p.getHeight() * scale); 1201 // as getWidth() / getHeight() of the view are not 1202 // available yet, set up mActualScale, so that when 1203 // onSizeChanged() is called, the rest will be set 1204 // correctly 1205 mActualScale = scale; 1206 float lastScale = b.getFloat("lastScale", -1.0f); 1207 if (lastScale > 0) { 1208 mInZoomOverview = true; 1209 mLastScale = lastScale; 1210 } else { 1211 mInZoomOverview = false; 1212 } 1213 invalidate(); 1214 return true; 1215 } 1216 } 1217 return false; 1218 } 1219 1220 /** 1221 * Restore the state of this WebView from the given map used in 1222 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1223 * be called to restore the state of the WebView before using the object. If 1224 * it is called after the WebView has had a chance to build state (load 1225 * pages, create a back/forward list, etc.) there may be undesirable 1226 * side-effects. Please note that this method no longer restores the 1227 * display data for this WebView. See {@link #savePicture} and {@link 1228 * #restorePicture} for saving and restoring the display data. 1229 * @param inState The incoming Bundle of state. 1230 * @return The restored back/forward list or null if restoreState failed. 1231 * @see #savePicture 1232 * @see #restorePicture 1233 */ 1234 public WebBackForwardList restoreState(Bundle inState) { 1235 WebBackForwardList returnList = null; 1236 if (inState == null) { 1237 return returnList; 1238 } 1239 if (inState.containsKey("index") && inState.containsKey("history")) { 1240 mCertificate = SslCertificate.restoreState( 1241 inState.getBundle("certificate")); 1242 1243 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1244 final int index = inState.getInt("index"); 1245 // We can't use a clone of the list because we need to modify the 1246 // shared copy, so synchronize instead to prevent concurrent 1247 // modifications. 1248 synchronized (list) { 1249 final List<byte[]> history = 1250 (List<byte[]>) inState.getSerializable("history"); 1251 final int size = history.size(); 1252 // Check the index bounds so we don't crash in native code while 1253 // restoring the history index. 1254 if (index < 0 || index >= size) { 1255 return null; 1256 } 1257 for (int i = 0; i < size; i++) { 1258 byte[] data = history.remove(0); 1259 if (data == null) { 1260 // If we somehow have null data, we cannot reconstruct 1261 // the item and thus our history list cannot be rebuilt. 1262 return null; 1263 } 1264 WebHistoryItem item = new WebHistoryItem(data); 1265 list.addHistoryItem(item); 1266 } 1267 // Grab the most recent copy to return to the caller. 1268 returnList = copyBackForwardList(); 1269 // Update the copy to have the correct index. 1270 returnList.setCurrentIndex(index); 1271 } 1272 // Remove all pending messages because we are restoring previous 1273 // state. 1274 mWebViewCore.removeMessages(); 1275 // Send a restore state message. 1276 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1277 } 1278 return returnList; 1279 } 1280 1281 /** 1282 * Load the given url. 1283 * @param url The url of the resource to load. 1284 */ 1285 public void loadUrl(String url) { 1286 if (url == null) { 1287 return; 1288 } 1289 switchOutDrawHistory(); 1290 mWebViewCore.sendMessage(EventHub.LOAD_URL, url); 1291 clearTextEntry(); 1292 } 1293 1294 /** 1295 * Load the url with postData using "POST" method into the WebView. If url 1296 * is not a network url, it will be loaded with {link 1297 * {@link #loadUrl(String)} instead. 1298 * 1299 * @param url The url of the resource to load. 1300 * @param postData The data will be passed to "POST" request. 1301 */ 1302 public void postUrl(String url, byte[] postData) { 1303 if (URLUtil.isNetworkUrl(url)) { 1304 switchOutDrawHistory(); 1305 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1306 arg.mUrl = url; 1307 arg.mPostData = postData; 1308 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1309 clearTextEntry(); 1310 } else { 1311 loadUrl(url); 1312 } 1313 } 1314 1315 /** 1316 * Load the given data into the WebView. This will load the data into 1317 * WebView using the data: scheme. Content loaded through this mechanism 1318 * does not have the ability to load content from the network. 1319 * @param data A String of data in the given encoding. 1320 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1321 * @param encoding The encoding of the data. i.e. utf-8, base64 1322 */ 1323 public void loadData(String data, String mimeType, String encoding) { 1324 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1325 } 1326 1327 /** 1328 * Load the given data into the WebView, use the provided URL as the base 1329 * URL for the content. The base URL is the URL that represents the page 1330 * that is loaded through this interface. As such, it is used for the 1331 * history entry and to resolve any relative URLs. The failUrl is used if 1332 * browser fails to load the data provided. If it is empty or null, and the 1333 * load fails, then no history entry is created. 1334 * <p> 1335 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1336 * files through "file:///android_asset/" for the sub resources is more 1337 * restricted. If you provide null or empty string as baseUrl, you won't be 1338 * able to access asset files. If the baseUrl is anything other than 1339 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1340 * sub resources. 1341 * 1342 * @param baseUrl Url to resolve relative paths with, if null defaults to 1343 * "about:blank" 1344 * @param data A String of data in the given encoding. 1345 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1346 * defaults to "text/html" 1347 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1348 * @param failUrl URL to use if the content fails to load or null. 1349 */ 1350 public void loadDataWithBaseURL(String baseUrl, String data, 1351 String mimeType, String encoding, String failUrl) { 1352 1353 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1354 loadData(data, mimeType, encoding); 1355 return; 1356 } 1357 switchOutDrawHistory(); 1358 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1359 arg.mBaseUrl = baseUrl; 1360 arg.mData = data; 1361 arg.mMimeType = mimeType; 1362 arg.mEncoding = encoding; 1363 arg.mFailUrl = failUrl; 1364 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1365 clearTextEntry(); 1366 } 1367 1368 /** 1369 * Stop the current load. 1370 */ 1371 public void stopLoading() { 1372 // TODO: should we clear all the messages in the queue before sending 1373 // STOP_LOADING? 1374 switchOutDrawHistory(); 1375 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1376 } 1377 1378 /** 1379 * Reload the current url. 1380 */ 1381 public void reload() { 1382 clearTextEntry(); 1383 switchOutDrawHistory(); 1384 mWebViewCore.sendMessage(EventHub.RELOAD); 1385 } 1386 1387 /** 1388 * Return true if this WebView has a back history item. 1389 * @return True iff this WebView has a back history item. 1390 */ 1391 public boolean canGoBack() { 1392 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1393 synchronized (l) { 1394 if (l.getClearPending()) { 1395 return false; 1396 } else { 1397 return l.getCurrentIndex() > 0; 1398 } 1399 } 1400 } 1401 1402 /** 1403 * Go back in the history of this WebView. 1404 */ 1405 public void goBack() { 1406 goBackOrForward(-1); 1407 } 1408 1409 /** 1410 * Return true if this WebView has a forward history item. 1411 * @return True iff this Webview has a forward history item. 1412 */ 1413 public boolean canGoForward() { 1414 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1415 synchronized (l) { 1416 if (l.getClearPending()) { 1417 return false; 1418 } else { 1419 return l.getCurrentIndex() < l.getSize() - 1; 1420 } 1421 } 1422 } 1423 1424 /** 1425 * Go forward in the history of this WebView. 1426 */ 1427 public void goForward() { 1428 goBackOrForward(1); 1429 } 1430 1431 /** 1432 * Return true if the page can go back or forward the given 1433 * number of steps. 1434 * @param steps The negative or positive number of steps to move the 1435 * history. 1436 */ 1437 public boolean canGoBackOrForward(int steps) { 1438 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1439 synchronized (l) { 1440 if (l.getClearPending()) { 1441 return false; 1442 } else { 1443 int newIndex = l.getCurrentIndex() + steps; 1444 return newIndex >= 0 && newIndex < l.getSize(); 1445 } 1446 } 1447 } 1448 1449 /** 1450 * Go to the history item that is the number of steps away from 1451 * the current item. Steps is negative if backward and positive 1452 * if forward. 1453 * @param steps The number of steps to take back or forward in the back 1454 * forward list. 1455 */ 1456 public void goBackOrForward(int steps) { 1457 goBackOrForward(steps, false); 1458 } 1459 1460 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1461 // every time we go back or forward, we want to reset the 1462 // WebView certificate: 1463 // if the new site is secure, we will reload it and get a 1464 // new certificate set; 1465 // if the new site is not secure, the certificate must be 1466 // null, and that will be the case 1467 mCertificate = null; 1468 if (steps != 0) { 1469 clearTextEntry(); 1470 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1471 ignoreSnapshot ? 1 : 0); 1472 } 1473 } 1474 1475 private boolean extendScroll(int y) { 1476 int finalY = mScroller.getFinalY(); 1477 int newY = pinLocY(finalY + y); 1478 if (newY == finalY) return false; 1479 mScroller.setFinalY(newY); 1480 mScroller.extendDuration(computeDuration(0, y)); 1481 return true; 1482 } 1483 1484 /** 1485 * Scroll the contents of the view up by half the view size 1486 * @param top true to jump to the top of the page 1487 * @return true if the page was scrolled 1488 */ 1489 public boolean pageUp(boolean top) { 1490 if (mNativeClass == 0) { 1491 return false; 1492 } 1493 nativeClearCursor(); // start next trackball movement from page edge 1494 if (top) { 1495 // go to the top of the document 1496 return pinScrollTo(mScrollX, 0, true, 0); 1497 } 1498 // Page up 1499 int h = getHeight(); 1500 int y; 1501 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1502 y = -h + PAGE_SCROLL_OVERLAP; 1503 } else { 1504 y = -h / 2; 1505 } 1506 mUserScroll = true; 1507 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1508 : extendScroll(y); 1509 } 1510 1511 /** 1512 * Scroll the contents of the view down by half the page size 1513 * @param bottom true to jump to bottom of page 1514 * @return true if the page was scrolled 1515 */ 1516 public boolean pageDown(boolean bottom) { 1517 if (mNativeClass == 0) { 1518 return false; 1519 } 1520 nativeClearCursor(); // start next trackball movement from page edge 1521 if (bottom) { 1522 return pinScrollTo(mScrollX, mContentHeight, true, 0); 1523 } 1524 // Page down. 1525 int h = getHeight(); 1526 int y; 1527 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1528 y = h - PAGE_SCROLL_OVERLAP; 1529 } else { 1530 y = h / 2; 1531 } 1532 mUserScroll = true; 1533 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1534 : extendScroll(y); 1535 } 1536 1537 /** 1538 * Clear the view so that onDraw() will draw nothing but white background, 1539 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1540 */ 1541 public void clearView() { 1542 mContentWidth = 0; 1543 mContentHeight = 0; 1544 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1545 } 1546 1547 /** 1548 * Return a new picture that captures the current display of the webview. 1549 * This is a copy of the display, and will be unaffected if the webview 1550 * later loads a different URL. 1551 * 1552 * @return a picture containing the current contents of the view. Note this 1553 * picture is of the entire document, and is not restricted to the 1554 * bounds of the view. 1555 */ 1556 public Picture capturePicture() { 1557 if (null == mWebViewCore) return null; // check for out of memory tab 1558 return mWebViewCore.copyContentPicture(); 1559 } 1560 1561 /** 1562 * Return true if the browser is displaying a TextView for text input. 1563 */ 1564 private boolean inEditingMode() { 1565 return mWebTextView != null && mWebTextView.getParent() != null 1566 && mWebTextView.hasFocus(); 1567 } 1568 1569 private void clearTextEntry() { 1570 if (inEditingMode()) { 1571 mWebTextView.remove(); 1572 } 1573 } 1574 1575 /** 1576 * Return the current scale of the WebView 1577 * @return The current scale. 1578 */ 1579 public float getScale() { 1580 return mActualScale; 1581 } 1582 1583 /** 1584 * Set the initial scale for the WebView. 0 means default. If 1585 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1586 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1587 * WebView starts will this value as initial scale. 1588 * 1589 * @param scaleInPercent The initial scale in percent. 1590 */ 1591 public void setInitialScale(int scaleInPercent) { 1592 mInitialScale = scaleInPercent; 1593 } 1594 1595 /** 1596 * Invoke the graphical zoom picker widget for this WebView. This will 1597 * result in the zoom widget appearing on the screen to control the zoom 1598 * level of this WebView. 1599 */ 1600 public void invokeZoomPicker() { 1601 if (!getSettings().supportZoom()) { 1602 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1603 return; 1604 } 1605 clearTextEntry(); 1606 if (getSettings().getBuiltInZoomControls()) { 1607 mZoomButtonsController.setVisible(true); 1608 } else { 1609 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1610 mPrivateHandler.postDelayed(mZoomControlRunnable, 1611 ZOOM_CONTROLS_TIMEOUT); 1612 } 1613 } 1614 1615 /** 1616 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1617 * is found and the anchor has a non-javascript url, the HitTestResult type 1618 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1619 * anchor does not have a url or if it is a javascript url, the type will 1620 * be UNKNOWN_TYPE and the url has to be retrieved through 1621 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1622 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1623 * the "extra" field. A type of 1624 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1625 * a child node. If a phone number is found, the HitTestResult type is set 1626 * to PHONE_TYPE and the phone number is set in the "extra" field of 1627 * HitTestResult. If a map address is found, the HitTestResult type is set 1628 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1629 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1630 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1631 * HitTestResult type is set to UNKNOWN_TYPE. 1632 */ 1633 public HitTestResult getHitTestResult() { 1634 if (mNativeClass == 0) { 1635 return null; 1636 } 1637 1638 HitTestResult result = new HitTestResult(); 1639 if (nativeHasCursorNode()) { 1640 if (nativeCursorIsTextInput()) { 1641 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1642 } else { 1643 String text = nativeCursorText(); 1644 if (text != null) { 1645 if (text.startsWith(SCHEME_TEL)) { 1646 result.setType(HitTestResult.PHONE_TYPE); 1647 result.setExtra(text.substring(SCHEME_TEL.length())); 1648 } else if (text.startsWith(SCHEME_MAILTO)) { 1649 result.setType(HitTestResult.EMAIL_TYPE); 1650 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1651 } else if (text.startsWith(SCHEME_GEO)) { 1652 result.setType(HitTestResult.GEO_TYPE); 1653 result.setExtra(URLDecoder.decode(text 1654 .substring(SCHEME_GEO.length()))); 1655 } else if (nativeCursorIsAnchor()) { 1656 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1657 result.setExtra(text); 1658 } 1659 } 1660 } 1661 } 1662 int type = result.getType(); 1663 if (type == HitTestResult.UNKNOWN_TYPE 1664 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1665 // Now check to see if it is an image. 1666 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1667 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1668 String text = nativeImageURI(contentX, contentY); 1669 if (text != null) { 1670 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1671 HitTestResult.IMAGE_TYPE : 1672 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1673 result.setExtra(text); 1674 } 1675 } 1676 return result; 1677 } 1678 1679 /** 1680 * Request the href of an anchor element due to getFocusNodePath returning 1681 * "href." If hrefMsg is null, this method returns immediately and does not 1682 * dispatch hrefMsg to its target. 1683 * 1684 * @param hrefMsg This message will be dispatched with the result of the 1685 * request as the data member with "url" as key. The result can 1686 * be null. 1687 */ 1688 // FIXME: API change required to change the name of this function. We now 1689 // look at the cursor node, and not the focus node. Also, what is 1690 // getFocusNodePath? 1691 public void requestFocusNodeHref(Message hrefMsg) { 1692 if (hrefMsg == null || mNativeClass == 0) { 1693 return; 1694 } 1695 if (nativeCursorIsAnchor()) { 1696 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1697 nativeCursorFramePointer(), nativeCursorNodePointer(), 1698 hrefMsg); 1699 } 1700 } 1701 1702 /** 1703 * Request the url of the image last touched by the user. msg will be sent 1704 * to its target with a String representing the url as its object. 1705 * 1706 * @param msg This message will be dispatched with the result of the request 1707 * as the data member with "url" as key. The result can be null. 1708 */ 1709 public void requestImageRef(Message msg) { 1710 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1711 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1712 String ref = nativeImageURI(contentX, contentY); 1713 Bundle data = msg.getData(); 1714 data.putString("url", ref); 1715 msg.setData(data); 1716 msg.sendToTarget(); 1717 } 1718 1719 private static int pinLoc(int x, int viewMax, int docMax) { 1720// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1721 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1722 // pin the short document to the top/left of the screen 1723 x = 0; 1724// Log.d(LOGTAG, "--- center " + x); 1725 } else if (x < 0) { 1726 x = 0; 1727// Log.d(LOGTAG, "--- zero"); 1728 } else if (x + viewMax > docMax) { 1729 x = docMax - viewMax; 1730// Log.d(LOGTAG, "--- pin " + x); 1731 } 1732 return x; 1733 } 1734 1735 // Expects x in view coordinates 1736 private int pinLocX(int x) { 1737 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1738 } 1739 1740 // Expects y in view coordinates 1741 private int pinLocY(int y) { 1742 int titleH = getTitleHeight(); 1743 // if the titlebar is still visible, just pin against 0 1744 if (y <= titleH) { 1745 return Math.max(y, 0); 1746 } 1747 // convert to 0-based coordinate (subtract the title height) 1748 // pin(), and then add the title height back in 1749 return pinLoc(y - titleH, getViewHeight(), 1750 computeVerticalScrollRange()) + titleH; 1751 } 1752 1753 /** 1754 * A title bar which is embedded in this WebView, and scrolls along with it 1755 * vertically, but not horizontally. 1756 */ 1757 private View mTitleBar; 1758 1759 /** 1760 * Since we draw the title bar ourselves, we removed the shadow from the 1761 * browser's activity. We do want a shadow at the bottom of the title bar, 1762 * or at the top of the screen if the title bar is not visible. This 1763 * drawable serves that purpose. 1764 */ 1765 private Drawable mTitleShadow; 1766 1767 /** 1768 * Add or remove a title bar to be embedded into the WebView, and scroll 1769 * along with it vertically, while remaining in view horizontally. Pass 1770 * null to remove the title bar from the WebView, and return to drawing 1771 * the WebView normally without translating to account for the title bar. 1772 * @hide 1773 */ 1774 public void setEmbeddedTitleBar(View v) { 1775 if (mTitleBar == v) return; 1776 if (mTitleBar != null) { 1777 removeView(mTitleBar); 1778 } 1779 if (null != v) { 1780 addView(v, new AbsoluteLayout.LayoutParams( 1781 ViewGroup.LayoutParams.FILL_PARENT, 1782 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1783 if (mTitleShadow == null) { 1784 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1785 com.android.internal.R.drawable.title_bar_shadow); 1786 } 1787 } 1788 mTitleBar = v; 1789 } 1790 1791 /** 1792 * Given a distance in view space, convert it to content space. Note: this 1793 * does not reflect translation, just scaling, so this should not be called 1794 * with coordinates, but should be called for dimensions like width or 1795 * height. 1796 */ 1797 private int viewToContentDimension(int d) { 1798 return Math.round(d * mInvActualScale); 1799 } 1800 1801 /** 1802 * Given an x coordinate in view space, convert it to content space. Also 1803 * may be used for absolute heights (such as for the WebTextView's 1804 * textSize, which is unaffected by the height of the title bar). 1805 */ 1806 /*package*/ int viewToContentX(int x) { 1807 return viewToContentDimension(x); 1808 } 1809 1810 /** 1811 * Given a y coordinate in view space, convert it to content space. 1812 * Takes into account the height of the title bar if there is one 1813 * embedded into the WebView. 1814 */ 1815 /*package*/ int viewToContentY(int y) { 1816 return viewToContentDimension(y - getTitleHeight()); 1817 } 1818 1819 /** 1820 * Given a distance in content space, convert it to view space. Note: this 1821 * does not reflect translation, just scaling, so this should not be called 1822 * with coordinates, but should be called for dimensions like width or 1823 * height. 1824 */ 1825 /*package*/ int contentToViewDimension(int d) { 1826 return Math.round(d * mActualScale); 1827 } 1828 1829 /** 1830 * Given an x coordinate in content space, convert it to view 1831 * space. 1832 */ 1833 /*package*/ int contentToViewX(int x) { 1834 return contentToViewDimension(x); 1835 } 1836 1837 /** 1838 * Given a y coordinate in content space, convert it to view 1839 * space. Takes into account the height of the title bar. 1840 */ 1841 /*package*/ int contentToViewY(int y) { 1842 return contentToViewDimension(y) + getTitleHeight(); 1843 } 1844 1845 private Rect contentToViewRect(Rect x) { 1846 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 1847 contentToViewX(x.right), contentToViewY(x.bottom)); 1848 } 1849 1850 /* To invalidate a rectangle in content coordinates, we need to transform 1851 the rect into view coordinates, so we can then call invalidate(...). 1852 1853 Normally, we would just call contentToView[XY](...), which eventually 1854 calls Math.round(coordinate * mActualScale). However, for invalidates, 1855 we need to account for the slop that occurs with antialiasing. To 1856 address that, we are a little more liberal in the size of the rect that 1857 we invalidate. 1858 1859 This liberal calculation calls floor() for the top/left, and ceil() for 1860 the bottom/right coordinates. This catches the possible extra pixels of 1861 antialiasing that we might have missed with just round(). 1862 */ 1863 1864 // Called by JNI to invalidate the View, given rectangle coordinates in 1865 // content space 1866 private void viewInvalidate(int l, int t, int r, int b) { 1867 final float scale = mActualScale; 1868 final int dy = getTitleHeight(); 1869 invalidate((int)Math.floor(l * scale), 1870 (int)Math.floor(t * scale) + dy, 1871 (int)Math.ceil(r * scale), 1872 (int)Math.ceil(b * scale) + dy); 1873 } 1874 1875 // Called by JNI to invalidate the View after a delay, given rectangle 1876 // coordinates in content space 1877 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 1878 final float scale = mActualScale; 1879 final int dy = getTitleHeight(); 1880 postInvalidateDelayed(delay, 1881 (int)Math.floor(l * scale), 1882 (int)Math.floor(t * scale) + dy, 1883 (int)Math.ceil(r * scale), 1884 (int)Math.ceil(b * scale) + dy); 1885 } 1886 1887 private void invalidateContentRect(Rect r) { 1888 viewInvalidate(r.left, r.top, r.right, r.bottom); 1889 } 1890 1891 // stop the scroll animation, and don't let a subsequent fling add 1892 // to the existing velocity 1893 private void abortAnimation() { 1894 mScroller.abortAnimation(); 1895 mLastVelocity = 0; 1896 } 1897 1898 /* call from webcoreview.draw(), so we're still executing in the UI thread 1899 */ 1900 private void recordNewContentSize(int w, int h, boolean updateLayout) { 1901 1902 // premature data from webkit, ignore 1903 if ((w | h) == 0) { 1904 return; 1905 } 1906 1907 // don't abort a scroll animation if we didn't change anything 1908 if (mContentWidth != w || mContentHeight != h) { 1909 // record new dimensions 1910 mContentWidth = w; 1911 mContentHeight = h; 1912 // If history Picture is drawn, don't update scroll. They will be 1913 // updated when we get out of that mode. 1914 if (!mDrawHistory) { 1915 // repin our scroll, taking into account the new content size 1916 int oldX = mScrollX; 1917 int oldY = mScrollY; 1918 mScrollX = pinLocX(mScrollX); 1919 mScrollY = pinLocY(mScrollY); 1920 if (oldX != mScrollX || oldY != mScrollY) { 1921 sendOurVisibleRect(); 1922 } 1923 if (!mScroller.isFinished()) { 1924 // We are in the middle of a scroll. Repin the final scroll 1925 // position. 1926 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 1927 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 1928 } 1929 } 1930 } 1931 contentSizeChanged(updateLayout); 1932 } 1933 1934 private void setNewZoomScale(float scale, boolean force) { 1935 if (scale < mMinZoomScale) { 1936 scale = mMinZoomScale; 1937 } else if (scale > mMaxZoomScale) { 1938 scale = mMaxZoomScale; 1939 } 1940 if (scale != mActualScale || force) { 1941 if (mDrawHistory) { 1942 // If history Picture is drawn, don't update scroll. They will 1943 // be updated when we get out of that mode. 1944 if (scale != mActualScale && !mPreviewZoomOnly) { 1945 mCallbackProxy.onScaleChanged(mActualScale, scale); 1946 } 1947 mActualScale = scale; 1948 mInvActualScale = 1 / scale; 1949 if (!mPreviewZoomOnly) { 1950 sendViewSizeZoom(); 1951 } 1952 } else { 1953 // update our scroll so we don't appear to jump 1954 // i.e. keep the center of the doc in the center of the view 1955 1956 int oldX = mScrollX; 1957 int oldY = mScrollY; 1958 float ratio = scale * mInvActualScale; // old inverse 1959 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 1960 float sy = ratio * oldY + (ratio - 1) 1961 * (mZoomCenterY - getTitleHeight()); 1962 1963 // now update our new scale and inverse 1964 if (scale != mActualScale && !mPreviewZoomOnly) { 1965 mCallbackProxy.onScaleChanged(mActualScale, scale); 1966 } 1967 mActualScale = scale; 1968 mInvActualScale = 1 / scale; 1969 1970 // Scale all the child views 1971 mViewManager.scaleAll(); 1972 1973 // as we don't have animation for scaling, don't do animation 1974 // for scrolling, as it causes weird intermediate state 1975 // pinScrollTo(Math.round(sx), Math.round(sy)); 1976 mScrollX = pinLocX(Math.round(sx)); 1977 mScrollY = pinLocY(Math.round(sy)); 1978 1979 if (!mPreviewZoomOnly) { 1980 sendViewSizeZoom(); 1981 sendOurVisibleRect(); 1982 } 1983 } 1984 } 1985 } 1986 1987 // Used to avoid sending many visible rect messages. 1988 private Rect mLastVisibleRectSent; 1989 private Rect mLastGlobalRect; 1990 1991 private Rect sendOurVisibleRect() { 1992 Rect rect = new Rect(); 1993 calcOurContentVisibleRect(rect); 1994 // Rect.equals() checks for null input. 1995 if (!rect.equals(mLastVisibleRectSent)) { 1996 Point pos = new Point(rect.left, rect.top); 1997 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 1998 nativeMoveGeneration(), 0, pos); 1999 mLastVisibleRectSent = rect; 2000 } 2001 Rect globalRect = new Rect(); 2002 if (getGlobalVisibleRect(globalRect) 2003 && !globalRect.equals(mLastGlobalRect)) { 2004 if (DebugFlags.WEB_VIEW) { 2005 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2006 + globalRect.top + ",r=" + globalRect.right + ",b=" 2007 + globalRect.bottom); 2008 } 2009 // TODO: the global offset is only used by windowRect() 2010 // in ChromeClientAndroid ; other clients such as touch 2011 // and mouse events could return view + screen relative points. 2012 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2013 mLastGlobalRect = globalRect; 2014 } 2015 return rect; 2016 } 2017 2018 // Sets r to be the visible rectangle of our webview in view coordinates 2019 private void calcOurVisibleRect(Rect r) { 2020 Point p = new Point(); 2021 getGlobalVisibleRect(r, p); 2022 r.offset(-p.x, -p.y); 2023 if (mFindIsUp) { 2024 r.bottom -= mFindHeight; 2025 } 2026 } 2027 2028 // Sets r to be our visible rectangle in content coordinates 2029 private void calcOurContentVisibleRect(Rect r) { 2030 calcOurVisibleRect(r); 2031 r.left = viewToContentX(r.left); 2032 // viewToContentY will remove the total height of the title bar. Add 2033 // the visible height back in to account for the fact that if the title 2034 // bar is partially visible, the part of the visible rect which is 2035 // displaying our content is displaced by that amount. 2036 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2037 r.right = viewToContentX(r.right); 2038 r.bottom = viewToContentY(r.bottom); 2039 } 2040 2041 static class ViewSizeData { 2042 int mWidth; 2043 int mHeight; 2044 int mTextWrapWidth; 2045 float mScale; 2046 boolean mIgnoreHeight; 2047 } 2048 2049 /** 2050 * Compute unzoomed width and height, and if they differ from the last 2051 * values we sent, send them to webkit (to be used has new viewport) 2052 * 2053 * @return true if new values were sent 2054 */ 2055 private boolean sendViewSizeZoom() { 2056 int viewWidth = getViewWidth(); 2057 int newWidth = Math.round(viewWidth * mInvActualScale); 2058 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2059 /* 2060 * Because the native side may have already done a layout before the 2061 * View system was able to measure us, we have to send a height of 0 to 2062 * remove excess whitespace when we grow our width. This will trigger a 2063 * layout and a change in content size. This content size change will 2064 * mean that contentSizeChanged will either call this method directly or 2065 * indirectly from onSizeChanged. 2066 */ 2067 if (newWidth > mLastWidthSent && mWrapContent) { 2068 newHeight = 0; 2069 } 2070 // Avoid sending another message if the dimensions have not changed. 2071 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2072 ViewSizeData data = new ViewSizeData(); 2073 data.mWidth = newWidth; 2074 data.mHeight = newHeight; 2075 // while in zoom overview mode, the text are wrapped to the screen 2076 // width matching mLastScale. So that we don't trigger re-flow while 2077 // toggling between overview mode and normal mode. 2078 data.mTextWrapWidth = mInZoomOverview ? Math.round(viewWidth 2079 / mLastScale) : newWidth; 2080 data.mScale = mActualScale; 2081 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2082 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2083 mLastWidthSent = newWidth; 2084 mLastHeightSent = newHeight; 2085 return true; 2086 } 2087 return false; 2088 } 2089 2090 @Override 2091 protected int computeHorizontalScrollRange() { 2092 if (mDrawHistory) { 2093 return mHistoryWidth; 2094 } else { 2095 // to avoid rounding error caused unnecessary scrollbar, use floor 2096 return (int) Math.floor(mContentWidth * mActualScale); 2097 } 2098 } 2099 2100 @Override 2101 protected int computeVerticalScrollRange() { 2102 if (mDrawHistory) { 2103 return mHistoryHeight; 2104 } else { 2105 // to avoid rounding error caused unnecessary scrollbar, use floor 2106 return (int) Math.floor(mContentHeight * mActualScale); 2107 } 2108 } 2109 2110 @Override 2111 protected int computeVerticalScrollOffset() { 2112 return Math.max(mScrollY - getTitleHeight(), 0); 2113 } 2114 2115 @Override 2116 protected int computeVerticalScrollExtent() { 2117 return getViewHeight(); 2118 } 2119 2120 /** @hide */ 2121 @Override 2122 protected void onDrawVerticalScrollBar(Canvas canvas, 2123 Drawable scrollBar, 2124 int l, int t, int r, int b) { 2125 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2126 scrollBar.draw(canvas); 2127 } 2128 2129 /** 2130 * Get the url for the current page. This is not always the same as the url 2131 * passed to WebViewClient.onPageStarted because although the load for 2132 * that url has begun, the current page may not have changed. 2133 * @return The url for the current page. 2134 */ 2135 public String getUrl() { 2136 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2137 return h != null ? h.getUrl() : null; 2138 } 2139 2140 /** 2141 * Get the original url for the current page. This is not always the same 2142 * as the url passed to WebViewClient.onPageStarted because although the 2143 * load for that url has begun, the current page may not have changed. 2144 * Also, there may have been redirects resulting in a different url to that 2145 * originally requested. 2146 * @return The url that was originally requested for the current page. 2147 */ 2148 public String getOriginalUrl() { 2149 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2150 return h != null ? h.getOriginalUrl() : null; 2151 } 2152 2153 /** 2154 * Get the title for the current page. This is the title of the current page 2155 * until WebViewClient.onReceivedTitle is called. 2156 * @return The title for the current page. 2157 */ 2158 public String getTitle() { 2159 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2160 return h != null ? h.getTitle() : null; 2161 } 2162 2163 /** 2164 * Get the favicon for the current page. This is the favicon of the current 2165 * page until WebViewClient.onReceivedIcon is called. 2166 * @return The favicon for the current page. 2167 */ 2168 public Bitmap getFavicon() { 2169 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2170 return h != null ? h.getFavicon() : null; 2171 } 2172 2173 /** 2174 * Get the touch icon url for the apple-touch-icon <link> element. 2175 * @hide 2176 */ 2177 public String getTouchIconUrl() { 2178 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2179 return h != null ? h.getTouchIconUrl() : null; 2180 } 2181 2182 /** 2183 * Get the progress for the current page. 2184 * @return The progress for the current page between 0 and 100. 2185 */ 2186 public int getProgress() { 2187 return mCallbackProxy.getProgress(); 2188 } 2189 2190 /** 2191 * @return the height of the HTML content. 2192 */ 2193 public int getContentHeight() { 2194 return mContentHeight; 2195 } 2196 2197 /** 2198 * @return the width of the HTML content. 2199 * @hide 2200 */ 2201 public int getContentWidth() { 2202 return mContentWidth; 2203 } 2204 2205 /** 2206 * Pause all layout, parsing, and javascript timers for all webviews. This 2207 * is a global requests, not restricted to just this webview. This can be 2208 * useful if the application has been paused. 2209 */ 2210 public void pauseTimers() { 2211 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2212 } 2213 2214 /** 2215 * Resume all layout, parsing, and javascript timers for all webviews. 2216 * This will resume dispatching all timers. 2217 */ 2218 public void resumeTimers() { 2219 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2220 } 2221 2222 /** 2223 * Call this to pause any extra processing associated with this view and 2224 * its associated DOM/plugins/javascript/etc. For example, if the view is 2225 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2226 * network traffic. When the view is again "active", call onResume(). 2227 * 2228 * Note that this differs from pauseTimers(), which affects all views/DOMs 2229 * @hide 2230 */ 2231 public void onPause() { 2232 if (!mIsPaused) { 2233 mIsPaused = true; 2234 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2235 } 2236 } 2237 2238 /** 2239 * Call this to balanace a previous call to onPause() 2240 * @hide 2241 */ 2242 public void onResume() { 2243 if (mIsPaused) { 2244 mIsPaused = false; 2245 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2246 } 2247 } 2248 2249 /** 2250 * Returns true if the view is paused, meaning onPause() was called. Calling 2251 * onResume() sets the paused state back to false. 2252 * @hide 2253 */ 2254 public boolean isPaused() { 2255 return mIsPaused; 2256 } 2257 2258 /** 2259 * Call this to inform the view that memory is low so that it can 2260 * free any available memory. 2261 * @hide 2262 */ 2263 public void freeMemory() { 2264 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2265 } 2266 2267 /** 2268 * Clear the resource cache. Note that the cache is per-application, so 2269 * this will clear the cache for all WebViews used. 2270 * 2271 * @param includeDiskFiles If false, only the RAM cache is cleared. 2272 */ 2273 public void clearCache(boolean includeDiskFiles) { 2274 // Note: this really needs to be a static method as it clears cache for all 2275 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2276 // we can't make this static. 2277 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2278 includeDiskFiles ? 1 : 0, 0); 2279 } 2280 2281 /** 2282 * Make sure that clearing the form data removes the adapter from the 2283 * currently focused textfield if there is one. 2284 */ 2285 public void clearFormData() { 2286 if (inEditingMode()) { 2287 AutoCompleteAdapter adapter = null; 2288 mWebTextView.setAdapterCustom(adapter); 2289 } 2290 } 2291 2292 /** 2293 * Tell the WebView to clear its internal back/forward list. 2294 */ 2295 public void clearHistory() { 2296 mCallbackProxy.getBackForwardList().setClearPending(); 2297 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2298 } 2299 2300 /** 2301 * Clear the SSL preferences table stored in response to proceeding with SSL 2302 * certificate errors. 2303 */ 2304 public void clearSslPreferences() { 2305 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2306 } 2307 2308 /** 2309 * Return the WebBackForwardList for this WebView. This contains the 2310 * back/forward list for use in querying each item in the history stack. 2311 * This is a copy of the private WebBackForwardList so it contains only a 2312 * snapshot of the current state. Multiple calls to this method may return 2313 * different objects. The object returned from this method will not be 2314 * updated to reflect any new state. 2315 */ 2316 public WebBackForwardList copyBackForwardList() { 2317 return mCallbackProxy.getBackForwardList().clone(); 2318 } 2319 2320 /* 2321 * Highlight and scroll to the next occurance of String in findAll. 2322 * Wraps the page infinitely, and scrolls. Must be called after 2323 * calling findAll. 2324 * 2325 * @param forward Direction to search. 2326 */ 2327 public void findNext(boolean forward) { 2328 nativeFindNext(forward); 2329 } 2330 2331 /* 2332 * Find all instances of find on the page and highlight them. 2333 * @param find String to find. 2334 * @return int The number of occurances of the String "find" 2335 * that were found. 2336 */ 2337 public int findAll(String find) { 2338 if (mFindIsUp == false) { 2339 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2340 false); 2341 mFindIsUp = true; 2342 } 2343 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2344 invalidate(); 2345 return result; 2346 } 2347 2348 // Used to know whether the find dialog is open. Affects whether 2349 // or not we draw the highlights for matches. 2350 private boolean mFindIsUp; 2351 private int mFindHeight; 2352 2353 /** 2354 * Return the first substring consisting of the address of a physical 2355 * location. Currently, only addresses in the United States are detected, 2356 * and consist of: 2357 * - a house number 2358 * - a street name 2359 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2360 * - a city name 2361 * - a state or territory, either spelled out or two-letter abbr. 2362 * - an optional 5 digit or 9 digit zip code. 2363 * 2364 * All names must be correctly capitalized, and the zip code, if present, 2365 * must be valid for the state. The street type must be a standard USPS 2366 * spelling or abbreviation. The state or territory must also be spelled 2367 * or abbreviated using USPS standards. The house number may not exceed 2368 * five digits. 2369 * @param addr The string to search for addresses. 2370 * 2371 * @return the address, or if no address is found, return null. 2372 */ 2373 public static String findAddress(String addr) { 2374 return findAddress(addr, false); 2375 } 2376 2377 /** 2378 * @hide 2379 * Return the first substring consisting of the address of a physical 2380 * location. Currently, only addresses in the United States are detected, 2381 * and consist of: 2382 * - a house number 2383 * - a street name 2384 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2385 * - a city name 2386 * - a state or territory, either spelled out or two-letter abbr. 2387 * - an optional 5 digit or 9 digit zip code. 2388 * 2389 * Names are optionally capitalized, and the zip code, if present, 2390 * must be valid for the state. The street type must be a standard USPS 2391 * spelling or abbreviation. The state or territory must also be spelled 2392 * or abbreviated using USPS standards. The house number may not exceed 2393 * five digits. 2394 * @param addr The string to search for addresses. 2395 * @param caseInsensitive addr Set to true to make search ignore case. 2396 * 2397 * @return the address, or if no address is found, return null. 2398 */ 2399 public static String findAddress(String addr, boolean caseInsensitive) { 2400 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2401 } 2402 2403 /* 2404 * Clear the highlighting surrounding text matches created by findAll. 2405 */ 2406 public void clearMatches() { 2407 if (mFindIsUp) { 2408 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2409 false); 2410 mFindIsUp = false; 2411 } 2412 nativeSetFindIsDown(); 2413 // Now that the dialog has been removed, ensure that we scroll to a 2414 // location that is not beyond the end of the page. 2415 pinScrollTo(mScrollX, mScrollY, false, 0); 2416 invalidate(); 2417 } 2418 2419 /** 2420 * @hide 2421 */ 2422 public void setFindDialogHeight(int height) { 2423 if (DebugFlags.WEB_VIEW) { 2424 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2425 } 2426 mFindHeight = height; 2427 } 2428 2429 /** 2430 * Query the document to see if it contains any image references. The 2431 * message object will be dispatched with arg1 being set to 1 if images 2432 * were found and 0 if the document does not reference any images. 2433 * @param response The message that will be dispatched with the result. 2434 */ 2435 public void documentHasImages(Message response) { 2436 if (response == null) { 2437 return; 2438 } 2439 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2440 } 2441 2442 @Override 2443 public void computeScroll() { 2444 if (mScroller.computeScrollOffset()) { 2445 int oldX = mScrollX; 2446 int oldY = mScrollY; 2447 mScrollX = mScroller.getCurrX(); 2448 mScrollY = mScroller.getCurrY(); 2449 postInvalidate(); // So we draw again 2450 if (oldX != mScrollX || oldY != mScrollY) { 2451 // as onScrollChanged() is not called, sendOurVisibleRect() 2452 // needs to be call explicitly 2453 sendOurVisibleRect(); 2454 } 2455 } else { 2456 super.computeScroll(); 2457 } 2458 } 2459 2460 private static int computeDuration(int dx, int dy) { 2461 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2462 int duration = distance * 1000 / STD_SPEED; 2463 return Math.min(duration, MAX_DURATION); 2464 } 2465 2466 // helper to pin the scrollBy parameters (already in view coordinates) 2467 // returns true if the scroll was changed 2468 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2469 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2470 } 2471 // helper to pin the scrollTo parameters (already in view coordinates) 2472 // returns true if the scroll was changed 2473 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2474 x = pinLocX(x); 2475 y = pinLocY(y); 2476 int dx = x - mScrollX; 2477 int dy = y - mScrollY; 2478 2479 if ((dx | dy) == 0) { 2480 return false; 2481 } 2482 if (animate) { 2483 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2484 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2485 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2486 awakenScrollBars(mScroller.getDuration()); 2487 invalidate(); 2488 } else { 2489 abortAnimation(); // just in case 2490 scrollTo(x, y); 2491 } 2492 return true; 2493 } 2494 2495 // Scale from content to view coordinates, and pin. 2496 // Also called by jni webview.cpp 2497 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2498 if (mDrawHistory) { 2499 // disallow WebView to change the scroll position as History Picture 2500 // is used in the view system. 2501 // TODO: as we switchOutDrawHistory when trackball or navigation 2502 // keys are hit, this should be safe. Right? 2503 return false; 2504 } 2505 cx = contentToViewDimension(cx); 2506 cy = contentToViewDimension(cy); 2507 if (mHeightCanMeasure) { 2508 // move our visible rect according to scroll request 2509 if (cy != 0) { 2510 Rect tempRect = new Rect(); 2511 calcOurVisibleRect(tempRect); 2512 tempRect.offset(cx, cy); 2513 requestRectangleOnScreen(tempRect); 2514 } 2515 // FIXME: We scroll horizontally no matter what because currently 2516 // ScrollView and ListView will not scroll horizontally. 2517 // FIXME: Why do we only scroll horizontally if there is no 2518 // vertical scroll? 2519// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2520 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2521 } else { 2522 return pinScrollBy(cx, cy, animate, 0); 2523 } 2524 } 2525 2526 // scale from content to view coordinates, and pin 2527 // return true if pin caused the final x/y different than the request cx/cy, 2528 // and a future scroll may reach the request cx/cy after our size has 2529 // changed 2530 // return false if the view scroll to the exact position as it is requested, 2531 // where negative numbers are taken to mean 0 2532 private boolean setContentScrollTo(int cx, int cy) { 2533 if (mDrawHistory) { 2534 // disallow WebView to change the scroll position as History Picture 2535 // is used in the view system. 2536 // One known case where this is called is that WebCore tries to 2537 // restore the scroll position. As history Picture already uses the 2538 // saved scroll position, it is ok to skip this. 2539 return false; 2540 } 2541 int vx; 2542 int vy; 2543 if ((cx | cy) == 0) { 2544 // If the page is being scrolled to (0,0), do not add in the title 2545 // bar's height, and simply scroll to (0,0). (The only other work 2546 // in contentToView_ is to multiply, so this would not change 0.) 2547 vx = 0; 2548 vy = 0; 2549 } else { 2550 vx = contentToViewX(cx); 2551 vy = contentToViewY(cy); 2552 } 2553// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2554// vx + " " + vy + "]"); 2555 // Some mobile sites attempt to scroll the title bar off the page by 2556 // scrolling to (0,1). If we are at the top left corner of the 2557 // page, assume this is an attempt to scroll off the title bar, and 2558 // animate the title bar off screen slowly enough that the user can see 2559 // it. 2560 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0) { 2561 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2562 // Since we are animating, we have not yet reached the desired 2563 // scroll position. Do not return true to request another attempt 2564 return false; 2565 } 2566 pinScrollTo(vx, vy, false, 0); 2567 // If the request was to scroll to a negative coordinate, treat it as if 2568 // it was a request to scroll to 0 2569 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2570 return true; 2571 } else { 2572 return false; 2573 } 2574 } 2575 2576 // scale from content to view coordinates, and pin 2577 private void spawnContentScrollTo(int cx, int cy) { 2578 if (mDrawHistory) { 2579 // disallow WebView to change the scroll position as History Picture 2580 // is used in the view system. 2581 return; 2582 } 2583 int vx = contentToViewX(cx); 2584 int vy = contentToViewY(cy); 2585 pinScrollTo(vx, vy, true, 0); 2586 } 2587 2588 /** 2589 * These are from webkit, and are in content coordinate system (unzoomed) 2590 */ 2591 private void contentSizeChanged(boolean updateLayout) { 2592 // suppress 0,0 since we usually see real dimensions soon after 2593 // this avoids drawing the prev content in a funny place. If we find a 2594 // way to consolidate these notifications, this check may become 2595 // obsolete 2596 if ((mContentWidth | mContentHeight) == 0) { 2597 return; 2598 } 2599 2600 if (mHeightCanMeasure) { 2601 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2602 && updateLayout) { 2603 requestLayout(); 2604 } 2605 } else if (mWidthCanMeasure) { 2606 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2607 && updateLayout) { 2608 requestLayout(); 2609 } 2610 } else { 2611 // If we don't request a layout, try to send our view size to the 2612 // native side to ensure that WebCore has the correct dimensions. 2613 sendViewSizeZoom(); 2614 } 2615 } 2616 2617 /** 2618 * Set the WebViewClient that will receive various notifications and 2619 * requests. This will replace the current handler. 2620 * @param client An implementation of WebViewClient. 2621 */ 2622 public void setWebViewClient(WebViewClient client) { 2623 mCallbackProxy.setWebViewClient(client); 2624 } 2625 2626 /** 2627 * Register the interface to be used when content can not be handled by 2628 * the rendering engine, and should be downloaded instead. This will replace 2629 * the current handler. 2630 * @param listener An implementation of DownloadListener. 2631 */ 2632 public void setDownloadListener(DownloadListener listener) { 2633 mCallbackProxy.setDownloadListener(listener); 2634 } 2635 2636 /** 2637 * Set the chrome handler. This is an implementation of WebChromeClient for 2638 * use in handling Javascript dialogs, favicons, titles, and the progress. 2639 * This will replace the current handler. 2640 * @param client An implementation of WebChromeClient. 2641 */ 2642 public void setWebChromeClient(WebChromeClient client) { 2643 mCallbackProxy.setWebChromeClient(client); 2644 } 2645 2646 /** 2647 * Gets the chrome handler. 2648 * @return the current WebChromeClient instance. 2649 * 2650 * @hide API council approval. 2651 */ 2652 public WebChromeClient getWebChromeClient() { 2653 return mCallbackProxy.getWebChromeClient(); 2654 } 2655 2656 /** 2657 * Set the Picture listener. This is an interface used to receive 2658 * notifications of a new Picture. 2659 * @param listener An implementation of WebView.PictureListener. 2660 */ 2661 public void setPictureListener(PictureListener listener) { 2662 mPictureListener = listener; 2663 } 2664 2665 /** 2666 * {@hide} 2667 */ 2668 /* FIXME: Debug only! Remove for SDK! */ 2669 public void externalRepresentation(Message callback) { 2670 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2671 } 2672 2673 /** 2674 * {@hide} 2675 */ 2676 /* FIXME: Debug only! Remove for SDK! */ 2677 public void documentAsText(Message callback) { 2678 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2679 } 2680 2681 /** 2682 * Use this function to bind an object to Javascript so that the 2683 * methods can be accessed from Javascript. 2684 * <p><strong>IMPORTANT:</strong> 2685 * <ul> 2686 * <li> Using addJavascriptInterface() allows JavaScript to control your 2687 * application. This can be a very useful feature or a dangerous security 2688 * issue. When the HTML in the WebView is untrustworthy (for example, part 2689 * or all of the HTML is provided by some person or process), then an 2690 * attacker could inject HTML that will execute your code and possibly any 2691 * code of the attacker's choosing.<br> 2692 * Do not use addJavascriptInterface() unless all of the HTML in this 2693 * WebView was written by you.</li> 2694 * <li> The Java object that is bound runs in another thread and not in 2695 * the thread that it was constructed in.</li> 2696 * </ul></p> 2697 * @param obj The class instance to bind to Javascript 2698 * @param interfaceName The name to used to expose the class in Javascript 2699 */ 2700 public void addJavascriptInterface(Object obj, String interfaceName) { 2701 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2702 arg.mObject = obj; 2703 arg.mInterfaceName = interfaceName; 2704 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2705 } 2706 2707 /** 2708 * Return the WebSettings object used to control the settings for this 2709 * WebView. 2710 * @return A WebSettings object that can be used to control this WebView's 2711 * settings. 2712 */ 2713 public WebSettings getSettings() { 2714 return mWebViewCore.getSettings(); 2715 } 2716 2717 /** 2718 * Return the list of currently loaded plugins. 2719 * @return The list of currently loaded plugins. 2720 * 2721 * @deprecated This was used for Gears, which has been deprecated. 2722 */ 2723 @Deprecated 2724 public static synchronized PluginList getPluginList() { 2725 return null; 2726 } 2727 2728 /** 2729 * @deprecated This was used for Gears, which has been deprecated. 2730 */ 2731 @Deprecated 2732 public void refreshPlugins(boolean reloadOpenPages) { } 2733 2734 //------------------------------------------------------------------------- 2735 // Override View methods 2736 //------------------------------------------------------------------------- 2737 2738 @Override 2739 protected void finalize() throws Throwable { 2740 try { 2741 destroy(); 2742 } finally { 2743 super.finalize(); 2744 } 2745 } 2746 2747 @Override 2748 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 2749 if (child == mTitleBar) { 2750 // When drawing the title bar, move it horizontally to always show 2751 // at the top of the WebView. 2752 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 2753 } 2754 return super.drawChild(canvas, child, drawingTime); 2755 } 2756 2757 @Override 2758 protected void onDraw(Canvas canvas) { 2759 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 2760 if (mNativeClass == 0) { 2761 return; 2762 } 2763 int saveCount = canvas.save(); 2764 if (mTitleBar != null) { 2765 canvas.translate(0, (int) mTitleBar.getHeight()); 2766 } 2767 // Update the buttons in the picture, so when we draw the picture 2768 // to the screen, they are in the correct state. 2769 // Tell the native side if user is a) touching the screen, 2770 // b) pressing the trackball down, or c) pressing the enter key 2771 // If the cursor is on a button, we need to draw it in the pressed 2772 // state. 2773 // If mNativeClass is 0, we should not reach here, so we do not 2774 // need to check it again. 2775 nativeRecordButtons(hasFocus() && hasWindowFocus(), 2776 mTouchMode == TOUCH_SHORTPRESS_START_MODE 2777 || mTrackballDown || mGotCenterDown, false); 2778 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 2779 canvas.restoreToCount(saveCount); 2780 2781 // Now draw the shadow. 2782 if (mTitleBar != null) { 2783 int y = mScrollY + getVisibleTitleHeight(); 2784 int height = (int) (5f * getContext().getResources() 2785 .getDisplayMetrics().density); 2786 mTitleShadow.setBounds(mScrollX, y, mScrollX + getWidth(), 2787 y + height); 2788 mTitleShadow.draw(canvas); 2789 } 2790 if (AUTO_REDRAW_HACK && mAutoRedraw) { 2791 invalidate(); 2792 } 2793 } 2794 2795 @Override 2796 public void setLayoutParams(ViewGroup.LayoutParams params) { 2797 if (params.height == LayoutParams.WRAP_CONTENT) { 2798 mWrapContent = true; 2799 } 2800 super.setLayoutParams(params); 2801 } 2802 2803 @Override 2804 public boolean performLongClick() { 2805 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 2806 // Send the click so that the textfield is in focus 2807 // FIXME: When we start respecting changes to the native textfield's 2808 // selection, need to make sure that this does not change it. 2809 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 2810 nativeCursorNodePointer()); 2811 rebuildWebTextView(); 2812 } 2813 if (inEditingMode()) { 2814 return mWebTextView.performLongClick(); 2815 } else { 2816 return super.performLongClick(); 2817 } 2818 } 2819 2820 boolean inAnimateZoom() { 2821 return mZoomScale != 0; 2822 } 2823 2824 /** 2825 * Need to adjust the WebTextView after a change in zoom, since mActualScale 2826 * has changed. This is especially important for password fields, which are 2827 * drawn by the WebTextView, since it conveys more information than what 2828 * webkit draws. Thus we need to reposition it to show in the correct 2829 * place. 2830 */ 2831 private boolean mNeedToAdjustWebTextView; 2832 2833 private void drawCoreAndCursorRing(Canvas canvas, int color, 2834 boolean drawCursorRing) { 2835 if (mDrawHistory) { 2836 canvas.scale(mActualScale, mActualScale); 2837 canvas.drawPicture(mHistoryPicture); 2838 return; 2839 } 2840 2841 boolean animateZoom = mZoomScale != 0; 2842 boolean animateScroll = !mScroller.isFinished() 2843 || mVelocityTracker != null; 2844 if (animateZoom) { 2845 float zoomScale; 2846 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 2847 if (interval < ZOOM_ANIMATION_LENGTH) { 2848 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 2849 zoomScale = 1.0f / (mInvInitialZoomScale 2850 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 2851 invalidate(); 2852 } else { 2853 zoomScale = mZoomScale; 2854 // set mZoomScale to be 0 as we have done animation 2855 mZoomScale = 0; 2856 // call invalidate() again to draw with the final filters 2857 invalidate(); 2858 if (mNeedToAdjustWebTextView) { 2859 mNeedToAdjustWebTextView = false; 2860 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 2861 contentToViewDimension( 2862 nativeFocusCandidateTextSize())); 2863 Rect bounds = nativeFocusCandidateNodeBounds(); 2864 Rect vBox = contentToViewRect(bounds); 2865 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 2866 vBox.height()); 2867 // If it is a password field, start drawing the 2868 // WebTextView once again. 2869 if (nativeFocusCandidateIsPassword()) { 2870 mWebTextView.setInPassword(true); 2871 } 2872 } 2873 } 2874 // calculate the intermediate scroll position. As we need to use 2875 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 2876 float scale = zoomScale * mInvInitialZoomScale; 2877 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 2878 - mZoomCenterX); 2879 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 2880 * zoomScale)) + mScrollX; 2881 int titleHeight = getTitleHeight(); 2882 int ty = Math.round(scale 2883 * (mInitialScrollY + mZoomCenterY - titleHeight) 2884 - (mZoomCenterY - titleHeight)); 2885 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 2886 - titleHeight, getViewHeight(), Math.round(mContentHeight 2887 * zoomScale)) + titleHeight) + mScrollY; 2888 canvas.translate(tx, ty); 2889 canvas.scale(zoomScale, zoomScale); 2890 if (inEditingMode() && !mNeedToAdjustWebTextView 2891 && mZoomScale != 0) { 2892 // The WebTextView is up. Keep track of this so we can adjust 2893 // its size and placement when we finish zooming 2894 mNeedToAdjustWebTextView = true; 2895 // If it is in password mode, turn it off so it does not draw 2896 // misplaced. 2897 if (nativeFocusCandidateIsPassword()) { 2898 mWebTextView.setInPassword(false); 2899 } 2900 } 2901 } else { 2902 canvas.scale(mActualScale, mActualScale); 2903 } 2904 2905 mWebViewCore.drawContentPicture(canvas, color, animateZoom, 2906 animateScroll); 2907 2908 if (mNativeClass == 0) return; 2909 if (mShiftIsPressed) { 2910 if (mTouchSelection) { 2911 nativeDrawSelectionRegion(canvas); 2912 } else { 2913 nativeDrawSelection(canvas, mSelectX, mSelectY, 2914 mExtendSelection); 2915 } 2916 } else if (drawCursorRing) { 2917 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 2918 mTouchMode = TOUCH_SHORTPRESS_MODE; 2919 HitTestResult hitTest = getHitTestResult(); 2920 if (hitTest != null && 2921 hitTest.mType != HitTestResult.UNKNOWN_TYPE) { 2922 mPrivateHandler.sendMessageDelayed(mPrivateHandler 2923 .obtainMessage(SWITCH_TO_LONGPRESS), 2924 LONG_PRESS_TIMEOUT); 2925 } 2926 } 2927 nativeDrawCursorRing(canvas); 2928 } 2929 // When the FindDialog is up, only draw the matches if we are not in 2930 // the process of scrolling them into view. 2931 if (mFindIsUp && !animateScroll) { 2932 nativeDrawMatches(canvas); 2933 } 2934 } 2935 2936 // draw history 2937 private boolean mDrawHistory = false; 2938 private Picture mHistoryPicture = null; 2939 private int mHistoryWidth = 0; 2940 private int mHistoryHeight = 0; 2941 2942 // Only check the flag, can be called from WebCore thread 2943 boolean drawHistory() { 2944 return mDrawHistory; 2945 } 2946 2947 // Should only be called in UI thread 2948 void switchOutDrawHistory() { 2949 if (null == mWebViewCore) return; // CallbackProxy may trigger this 2950 if (mDrawHistory && mWebViewCore.pictureReady()) { 2951 mDrawHistory = false; 2952 invalidate(); 2953 int oldScrollX = mScrollX; 2954 int oldScrollY = mScrollY; 2955 mScrollX = pinLocX(mScrollX); 2956 mScrollY = pinLocY(mScrollY); 2957 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 2958 mUserScroll = false; 2959 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 2960 oldScrollY); 2961 } 2962 sendOurVisibleRect(); 2963 } 2964 } 2965 2966 WebViewCore.CursorData cursorData() { 2967 WebViewCore.CursorData result = new WebViewCore.CursorData(); 2968 result.mMoveGeneration = nativeMoveGeneration(); 2969 result.mFrame = nativeCursorFramePointer(); 2970 Point position = nativeCursorPosition(); 2971 result.mX = position.x; 2972 result.mY = position.y; 2973 return result; 2974 } 2975 2976 /** 2977 * Delete text from start to end in the focused textfield. If there is no 2978 * focus, or if start == end, silently fail. If start and end are out of 2979 * order, swap them. 2980 * @param start Beginning of selection to delete. 2981 * @param end End of selection to delete. 2982 */ 2983 /* package */ void deleteSelection(int start, int end) { 2984 mTextGeneration++; 2985 WebViewCore.TextSelectionData data 2986 = new WebViewCore.TextSelectionData(start, end); 2987 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 2988 data); 2989 } 2990 2991 /** 2992 * Set the selection to (start, end) in the focused textfield. If start and 2993 * end are out of order, swap them. 2994 * @param start Beginning of selection. 2995 * @param end End of selection. 2996 */ 2997 /* package */ void setSelection(int start, int end) { 2998 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 2999 } 3000 3001 // Called by JNI when a touch event puts a textfield into focus. 3002 private void displaySoftKeyboard(boolean isTextView) { 3003 InputMethodManager imm = (InputMethodManager) 3004 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3005 3006 if (isTextView) { 3007 if (mWebTextView == null) return; 3008 3009 imm.showSoftInput(mWebTextView, 0); 3010 // Now we need to fake a touch event to place the cursor where the 3011 // user touched. 3012 AbsoluteLayout.LayoutParams lp = (AbsoluteLayout.LayoutParams) 3013 mWebTextView.getLayoutParams(); 3014 if (lp != null) { 3015 // Take the last touch and adjust for the location of the 3016 // WebTextView. 3017 float x = mLastTouchX + (float) (mScrollX - lp.x); 3018 float y = mLastTouchY + (float) (mScrollY - lp.y); 3019 mWebTextView.fakeTouchEvent(x, y); 3020 } 3021 if (mInZoomOverview) { 3022 // if in zoom overview mode, call doDoubleTap() to bring it back 3023 // to normal mode so that user can enter text. 3024 doDoubleTap(); 3025 } 3026 } 3027 else { // used by plugins 3028 imm.showSoftInput(this, 0); 3029 } 3030 } 3031 3032 // Called by WebKit to instruct the UI to hide the keyboard 3033 private void hideSoftKeyboard() { 3034 InputMethodManager imm = (InputMethodManager) 3035 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3036 3037 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3038 } 3039 3040 /* 3041 * This method checks the current focus and cursor and potentially rebuilds 3042 * mWebTextView to have the appropriate properties, such as password, 3043 * multiline, and what text it contains. It also removes it if necessary. 3044 */ 3045 /* package */ void rebuildWebTextView() { 3046 // If the WebView does not have focus, do nothing until it gains focus. 3047 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3048 return; 3049 } 3050 boolean alreadyThere = inEditingMode(); 3051 // inEditingMode can only return true if mWebTextView is non-null, 3052 // so we can safely call remove() if (alreadyThere) 3053 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3054 if (alreadyThere) { 3055 mWebTextView.remove(); 3056 } 3057 return; 3058 } 3059 // At this point, we know we have found an input field, so go ahead 3060 // and create the WebTextView if necessary. 3061 if (mWebTextView == null) { 3062 mWebTextView = new WebTextView(mContext, WebView.this); 3063 // Initialize our generation number. 3064 mTextGeneration = 0; 3065 } 3066 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3067 contentToViewDimension(nativeFocusCandidateTextSize())); 3068 Rect visibleRect = new Rect(); 3069 calcOurContentVisibleRect(visibleRect); 3070 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3071 // should be in content coordinates. 3072 Rect bounds = nativeFocusCandidateNodeBounds(); 3073 if (!Rect.intersects(bounds, visibleRect)) { 3074 mWebTextView.bringIntoView(); 3075 } 3076 String text = nativeFocusCandidateText(); 3077 int nodePointer = nativeFocusCandidatePointer(); 3078 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3079 // It is possible that we have the same textfield, but it has moved, 3080 // i.e. In the case of opening/closing the screen. 3081 // In that case, we need to set the dimensions, but not the other 3082 // aspects. 3083 // We also need to restore the selection, which gets wrecked by 3084 // calling setTextEntryRect. 3085 Spannable spannable = (Spannable) mWebTextView.getText(); 3086 int start = Selection.getSelectionStart(spannable); 3087 int end = Selection.getSelectionEnd(spannable); 3088 // If the text has been changed by webkit, update it. However, if 3089 // there has been more UI text input, ignore it. We will receive 3090 // another update when that text is recognized. 3091 if (text != null && !text.equals(spannable.toString()) 3092 && nativeTextGeneration() == mTextGeneration) { 3093 mWebTextView.setTextAndKeepSelection(text); 3094 } else { 3095 Selection.setSelection(spannable, start, end); 3096 } 3097 } else { 3098 Rect vBox = contentToViewRect(bounds); 3099 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3100 vBox.height()); 3101 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3102 Gravity.RIGHT : Gravity.NO_GRAVITY); 3103 // this needs to be called before update adapter thread starts to 3104 // ensure the mWebTextView has the same node pointer 3105 mWebTextView.setNodePointer(nodePointer); 3106 int maxLength = -1; 3107 boolean isTextField = nativeFocusCandidateIsTextField(); 3108 if (isTextField) { 3109 maxLength = nativeFocusCandidateMaxLength(); 3110 String name = nativeFocusCandidateName(); 3111 if (mWebViewCore.getSettings().getSaveFormData() 3112 && name != null) { 3113 Message update = mPrivateHandler.obtainMessage( 3114 REQUEST_FORM_DATA, nodePointer); 3115 RequestFormData updater = new RequestFormData(name, 3116 getUrl(), update); 3117 Thread t = new Thread(updater); 3118 t.start(); 3119 } 3120 } 3121 mWebTextView.setMaxLength(maxLength); 3122 AutoCompleteAdapter adapter = null; 3123 mWebTextView.setAdapterCustom(adapter); 3124 mWebTextView.setSingleLine(isTextField); 3125 mWebTextView.setInPassword(nativeFocusCandidateIsPassword()); 3126 if (null == text) { 3127 mWebTextView.setText("", 0, 0); 3128 if (DebugFlags.WEB_VIEW) { 3129 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3130 } 3131 } else { 3132 // Change to true to enable the old style behavior, where 3133 // entering a textfield/textarea always set the selection to the 3134 // whole field. This was desirable for the case where the user 3135 // intends to scroll past the field using the trackball. 3136 // However, it causes a problem when replying to emails - the 3137 // user expects the cursor to be at the beginning of the 3138 // textarea. Testing out a new behavior, where textfields set 3139 // selection at the end, and textareas at the beginning. 3140 if (false) { 3141 mWebTextView.setText(text, 0, text.length()); 3142 } else if (isTextField) { 3143 int length = text.length(); 3144 mWebTextView.setText(text, length, length); 3145 if (DebugFlags.WEB_VIEW) { 3146 Log.v(LOGTAG, "rebuildWebTextView length=" + length); 3147 } 3148 } else { 3149 mWebTextView.setText(text, 0, 0); 3150 if (DebugFlags.WEB_VIEW) { 3151 Log.v(LOGTAG, "rebuildWebTextView !isTextField"); 3152 } 3153 } 3154 } 3155 mWebTextView.requestFocus(); 3156 } 3157 } 3158 3159 /* 3160 * This class requests an Adapter for the WebTextView which shows past 3161 * entries stored in the database. It is a Runnable so that it can be done 3162 * in its own thread, without slowing down the UI. 3163 */ 3164 private class RequestFormData implements Runnable { 3165 private String mName; 3166 private String mUrl; 3167 private Message mUpdateMessage; 3168 3169 public RequestFormData(String name, String url, Message msg) { 3170 mName = name; 3171 mUrl = url; 3172 mUpdateMessage = msg; 3173 } 3174 3175 public void run() { 3176 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3177 if (pastEntries.size() > 0) { 3178 AutoCompleteAdapter adapter = new 3179 AutoCompleteAdapter(mContext, pastEntries); 3180 mUpdateMessage.obj = adapter; 3181 mUpdateMessage.sendToTarget(); 3182 } 3183 } 3184 } 3185 3186 // This is used to determine long press with the center key. Does not 3187 // affect long press with the trackball/touch. 3188 private boolean mGotCenterDown = false; 3189 3190 @Override 3191 public boolean onKeyDown(int keyCode, KeyEvent event) { 3192 if (DebugFlags.WEB_VIEW) { 3193 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3194 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3195 } 3196 3197 if (mNativeClass == 0) { 3198 return false; 3199 } 3200 3201 // do this hack up front, so it always works, regardless of touch-mode 3202 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3203 mAutoRedraw = !mAutoRedraw; 3204 if (mAutoRedraw) { 3205 invalidate(); 3206 } 3207 return true; 3208 } 3209 3210 // Bubble up the key event if 3211 // 1. it is a system key; or 3212 // 2. the host application wants to handle it; 3213 if (event.isSystem() 3214 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3215 return false; 3216 } 3217 3218 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3219 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3220 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3221 mExtendSelection = false; 3222 mShiftIsPressed = true; 3223 if (nativeHasCursorNode()) { 3224 Rect rect = nativeCursorNodeBounds(); 3225 mSelectX = contentToViewX(rect.left); 3226 mSelectY = contentToViewY(rect.top); 3227 } else { 3228 mSelectX = mScrollX + (int) mLastTouchX; 3229 mSelectY = mScrollY + (int) mLastTouchY; 3230 } 3231 nativeHideCursor(); 3232 } 3233 3234 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3235 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3236 // always handle the navigation keys in the UI thread 3237 switchOutDrawHistory(); 3238 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3239 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3240 return true; 3241 } 3242 // Bubble up the key event as WebView doesn't handle it 3243 return false; 3244 } 3245 3246 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3247 switchOutDrawHistory(); 3248 if (event.getRepeatCount() == 0) { 3249 mGotCenterDown = true; 3250 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3251 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3252 // Already checked mNativeClass, so we do not need to check it 3253 // again. 3254 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3255 return true; 3256 } 3257 // Bubble up the key event as WebView doesn't handle it 3258 return false; 3259 } 3260 3261 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3262 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3263 // turn off copy select if a shift-key combo is pressed 3264 mExtendSelection = mShiftIsPressed = false; 3265 if (mTouchMode == TOUCH_SELECT_MODE) { 3266 mTouchMode = TOUCH_INIT_MODE; 3267 } 3268 } 3269 3270 if (getSettings().getNavDump()) { 3271 switch (keyCode) { 3272 case KeyEvent.KEYCODE_4: 3273 // "/data/data/com.android.browser/displayTree.txt" 3274 nativeDumpDisplayTree(getUrl()); 3275 break; 3276 case KeyEvent.KEYCODE_5: 3277 case KeyEvent.KEYCODE_6: 3278 // 5: dump the dom tree to the file 3279 // "/data/data/com.android.browser/domTree.txt" 3280 // 6: dump the dom tree to the adb log 3281 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, 3282 (keyCode == KeyEvent.KEYCODE_5) ? 1 : 0, 0); 3283 break; 3284 case KeyEvent.KEYCODE_7: 3285 case KeyEvent.KEYCODE_8: 3286 // 7: dump the render tree to the file 3287 // "/data/data/com.android.browser/renderTree.txt" 3288 // 8: dump the render tree to the adb log 3289 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, 3290 (keyCode == KeyEvent.KEYCODE_7) ? 1 : 0, 0); 3291 break; 3292 case KeyEvent.KEYCODE_9: 3293 nativeInstrumentReport(); 3294 return true; 3295 } 3296 } 3297 3298 if (nativeCursorIsPlugin()) { 3299 nativeUpdatePluginReceivesEvents(); 3300 invalidate(); 3301 } else if (nativeCursorIsTextInput()) { 3302 // This message will put the node in focus, for the DOM's notion 3303 // of focus, and make the focuscontroller active 3304 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3305 nativeCursorNodePointer()); 3306 // This will bring up the WebTextView and put it in focus, for 3307 // our view system's notion of focus 3308 rebuildWebTextView(); 3309 // Now we need to pass the event to it 3310 return mWebTextView.onKeyDown(keyCode, event); 3311 } else if (nativeHasFocusNode()) { 3312 // In this case, the cursor is not on a text input, but the focus 3313 // might be. Check it, and if so, hand over to the WebTextView. 3314 rebuildWebTextView(); 3315 if (inEditingMode()) { 3316 return mWebTextView.onKeyDown(keyCode, event); 3317 } 3318 } 3319 3320 // TODO: should we pass all the keys to DOM or check the meta tag 3321 if (nativeCursorWantsKeyEvents() || true) { 3322 // pass the key to DOM 3323 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3324 // return true as DOM handles the key 3325 return true; 3326 } 3327 3328 // Bubble up the key event as WebView doesn't handle it 3329 return false; 3330 } 3331 3332 @Override 3333 public boolean onKeyUp(int keyCode, KeyEvent event) { 3334 if (DebugFlags.WEB_VIEW) { 3335 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3336 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3337 } 3338 3339 if (mNativeClass == 0) { 3340 return false; 3341 } 3342 3343 // special CALL handling when cursor node's href is "tel:XXX" 3344 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3345 String text = nativeCursorText(); 3346 if (!nativeCursorIsTextInput() && text != null 3347 && text.startsWith(SCHEME_TEL)) { 3348 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3349 getContext().startActivity(intent); 3350 return true; 3351 } 3352 } 3353 3354 // Bubble up the key event if 3355 // 1. it is a system key; or 3356 // 2. the host application wants to handle it; 3357 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3358 return false; 3359 } 3360 3361 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3362 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3363 if (commitCopy()) { 3364 return true; 3365 } 3366 } 3367 3368 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3369 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3370 // always handle the navigation keys in the UI thread 3371 // Bubble up the key event as WebView doesn't handle it 3372 return false; 3373 } 3374 3375 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3376 // remove the long press message first 3377 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3378 mGotCenterDown = false; 3379 3380 if (mShiftIsPressed) { 3381 return false; 3382 } 3383 3384 // perform the single click 3385 Rect visibleRect = sendOurVisibleRect(); 3386 // Note that sendOurVisibleRect calls viewToContent, so the 3387 // coordinates should be in content coordinates. 3388 if (!nativeCursorIntersects(visibleRect)) { 3389 return false; 3390 } 3391 nativeSetFollowedLink(true); 3392 nativeUpdatePluginReceivesEvents(); 3393 WebViewCore.CursorData data = cursorData(); 3394 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3395 playSoundEffect(SoundEffectConstants.CLICK); 3396 boolean isTextInput = nativeCursorIsTextInput(); 3397 if (isTextInput || !mCallbackProxy.uiOverrideUrlLoading( 3398 nativeCursorText())) { 3399 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3400 nativeCursorNodePointer()); 3401 } 3402 if (isTextInput) { 3403 rebuildWebTextView(); 3404 } 3405 return true; 3406 } 3407 3408 // TODO: should we pass all the keys to DOM or check the meta tag 3409 if (nativeCursorWantsKeyEvents() || true) { 3410 // pass the key to DOM 3411 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3412 // return true as DOM handles the key 3413 return true; 3414 } 3415 3416 // Bubble up the key event as WebView doesn't handle it 3417 return false; 3418 } 3419 3420 /** 3421 * @hide 3422 */ 3423 public void emulateShiftHeld() { 3424 mExtendSelection = false; 3425 mShiftIsPressed = true; 3426 nativeHideCursor(); 3427 } 3428 3429 private boolean commitCopy() { 3430 boolean copiedSomething = false; 3431 if (mExtendSelection) { 3432 // copy region so core operates on copy without touching orig. 3433 Region selection = new Region(nativeGetSelection()); 3434 if (selection.isEmpty() == false) { 3435 Toast.makeText(mContext 3436 , com.android.internal.R.string.text_copied 3437 , Toast.LENGTH_SHORT).show(); 3438 mWebViewCore.sendMessage(EventHub.GET_SELECTION, selection); 3439 copiedSomething = true; 3440 } 3441 mExtendSelection = false; 3442 } 3443 mShiftIsPressed = false; 3444 if (mTouchMode == TOUCH_SELECT_MODE) { 3445 mTouchMode = TOUCH_INIT_MODE; 3446 } 3447 return copiedSomething; 3448 } 3449 3450 // Set this as a hierarchy change listener so we can know when this view 3451 // is removed and still have access to our parent. 3452 @Override 3453 protected void onAttachedToWindow() { 3454 super.onAttachedToWindow(); 3455 ViewParent parent = getParent(); 3456 if (parent instanceof ViewGroup) { 3457 ViewGroup p = (ViewGroup) parent; 3458 p.setOnHierarchyChangeListener(this); 3459 } 3460 } 3461 3462 @Override 3463 protected void onDetachedFromWindow() { 3464 super.onDetachedFromWindow(); 3465 ViewParent parent = getParent(); 3466 if (parent instanceof ViewGroup) { 3467 ViewGroup p = (ViewGroup) parent; 3468 p.setOnHierarchyChangeListener(null); 3469 } 3470 3471 // Clean up the zoom controller 3472 mZoomButtonsController.setVisible(false); 3473 } 3474 3475 // Implementation for OnHierarchyChangeListener 3476 public void onChildViewAdded(View parent, View child) {} 3477 3478 public void onChildViewRemoved(View p, View child) { 3479 if (child == this) { 3480 clearTextEntry(); 3481 } 3482 } 3483 3484 /** 3485 * @deprecated WebView should not have implemented 3486 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3487 * does nothing now. 3488 */ 3489 @Deprecated 3490 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3491 } 3492 3493 // To avoid drawing the cursor ring, and remove the TextView when our window 3494 // loses focus. 3495 @Override 3496 public void onWindowFocusChanged(boolean hasWindowFocus) { 3497 if (hasWindowFocus) { 3498 if (hasFocus()) { 3499 // If our window regained focus, and we have focus, then begin 3500 // drawing the cursor ring 3501 mDrawCursorRing = true; 3502 if (mNativeClass != 0) { 3503 nativeRecordButtons(true, false, true); 3504 if (inEditingMode()) { 3505 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3506 } 3507 } 3508 } else { 3509 // If our window gained focus, but we do not have it, do not 3510 // draw the cursor ring. 3511 mDrawCursorRing = false; 3512 // We do not call nativeRecordButtons here because we assume 3513 // that when we lost focus, or window focus, it got called with 3514 // false for the first parameter 3515 } 3516 } else { 3517 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3518 /* 3519 * The zoom controls come in their own window, so our window 3520 * loses focus. Our policy is to not draw the cursor ring if 3521 * our window is not focused, but this is an exception since 3522 * the user can still navigate the web page with the zoom 3523 * controls showing. 3524 */ 3525 // If our window has lost focus, stop drawing the cursor ring 3526 mDrawCursorRing = false; 3527 } 3528 mGotKeyDown = false; 3529 mShiftIsPressed = false; 3530 if (mNativeClass != 0) { 3531 nativeRecordButtons(false, false, true); 3532 } 3533 setFocusControllerInactive(); 3534 } 3535 invalidate(); 3536 super.onWindowFocusChanged(hasWindowFocus); 3537 } 3538 3539 /* 3540 * Pass a message to WebCore Thread, telling the WebCore::Page's 3541 * FocusController to be "inactive" so that it will 3542 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3543 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3544 */ 3545 /* package */ void setFocusControllerInactive() { 3546 // Do not need to also check whether mWebViewCore is null, because 3547 // mNativeClass is only set if mWebViewCore is non null 3548 if (mNativeClass == 0) return; 3549 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 3550 } 3551 3552 @Override 3553 protected void onFocusChanged(boolean focused, int direction, 3554 Rect previouslyFocusedRect) { 3555 if (DebugFlags.WEB_VIEW) { 3556 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3557 } 3558 if (focused) { 3559 // When we regain focus, if we have window focus, resume drawing 3560 // the cursor ring 3561 if (hasWindowFocus()) { 3562 mDrawCursorRing = true; 3563 if (mNativeClass != 0) { 3564 nativeRecordButtons(true, false, true); 3565 } 3566 //} else { 3567 // The WebView has gained focus while we do not have 3568 // windowfocus. When our window lost focus, we should have 3569 // called nativeRecordButtons(false...) 3570 } 3571 } else { 3572 // When we lost focus, unless focus went to the TextView (which is 3573 // true if we are in editing mode), stop drawing the cursor ring. 3574 if (!inEditingMode()) { 3575 mDrawCursorRing = false; 3576 if (mNativeClass != 0) { 3577 nativeRecordButtons(false, false, true); 3578 } 3579 setFocusControllerInactive(); 3580 } 3581 mGotKeyDown = false; 3582 } 3583 3584 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3585 } 3586 3587 @Override 3588 protected void onSizeChanged(int w, int h, int ow, int oh) { 3589 super.onSizeChanged(w, h, ow, oh); 3590 // Center zooming to the center of the screen. 3591 if (mZoomScale == 0) { // unless we're already zooming 3592 mZoomCenterX = getViewWidth() * .5f; 3593 mZoomCenterY = getViewHeight() * .5f; 3594 } 3595 3596 // update mMinZoomScale if the minimum zoom scale is not fixed 3597 if (!mMinZoomScaleFixed) { 3598 // when change from narrow screen to wide screen, the new viewWidth 3599 // can be wider than the old content width. We limit the minimum 3600 // scale to 1.0f. The proper minimum scale will be calculated when 3601 // the new picture shows up. 3602 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 3603 / (mDrawHistory ? mHistoryPicture.getWidth() 3604 : mZoomOverviewWidth)); 3605 } 3606 3607 // we always force, in case our height changed, in which case we still 3608 // want to send the notification over to webkit 3609 setNewZoomScale(mActualScale, true); 3610 } 3611 3612 @Override 3613 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 3614 super.onScrollChanged(l, t, oldl, oldt); 3615 3616 sendOurVisibleRect(); 3617 } 3618 3619 3620 @Override 3621 public boolean dispatchKeyEvent(KeyEvent event) { 3622 boolean dispatch = true; 3623 3624 if (!inEditingMode()) { 3625 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3626 mGotKeyDown = true; 3627 } else { 3628 if (!mGotKeyDown) { 3629 /* 3630 * We got a key up for which we were not the recipient of 3631 * the original key down. Don't give it to the view. 3632 */ 3633 dispatch = false; 3634 } 3635 mGotKeyDown = false; 3636 } 3637 } 3638 3639 if (dispatch) { 3640 return super.dispatchKeyEvent(event); 3641 } else { 3642 // We didn't dispatch, so let something else handle the key 3643 return false; 3644 } 3645 } 3646 3647 // Here are the snap align logic: 3648 // 1. If it starts nearly horizontally or vertically, snap align; 3649 // 2. If there is a dramitic direction change, let it go; 3650 // 3. If there is a same direction back and forth, lock it. 3651 3652 // adjustable parameters 3653 private int mMinLockSnapReverseDistance; 3654 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 3655 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 3656 3657 @Override 3658 public boolean onTouchEvent(MotionEvent ev) { 3659 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 3660 return false; 3661 } 3662 3663 if (DebugFlags.WEB_VIEW) { 3664 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 3665 + mTouchMode); 3666 } 3667 3668 int action = ev.getAction(); 3669 float x = ev.getX(); 3670 float y = ev.getY(); 3671 long eventTime = ev.getEventTime(); 3672 3673 // Due to the touch screen edge effect, a touch closer to the edge 3674 // always snapped to the edge. As getViewWidth() can be different from 3675 // getWidth() due to the scrollbar, adjusting the point to match 3676 // getViewWidth(). Same applied to the height. 3677 if (x > getViewWidth() - 1) { 3678 x = getViewWidth() - 1; 3679 } 3680 if (y > getViewHeightWithTitle() - 1) { 3681 y = getViewHeightWithTitle() - 1; 3682 } 3683 3684 // pass the touch events from UI thread to WebCore thread 3685 if (mForwardTouchEvents && (action != MotionEvent.ACTION_MOVE 3686 || eventTime - mLastSentTouchTime > TOUCH_SENT_INTERVAL)) { 3687 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 3688 ted.mAction = action; 3689 ted.mX = viewToContentX((int) x + mScrollX); 3690 ted.mY = viewToContentY((int) y + mScrollY); 3691 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 3692 mLastSentTouchTime = eventTime; 3693 } 3694 3695 int deltaX = (int) (mLastTouchX - x); 3696 int deltaY = (int) (mLastTouchY - y); 3697 3698 switch (action) { 3699 case MotionEvent.ACTION_DOWN: { 3700 mPreventDrag = PREVENT_DRAG_NO; 3701 if (!mScroller.isFinished()) { 3702 // stop the current scroll animation, but if this is 3703 // the start of a fling, allow it to add to the current 3704 // fling's velocity 3705 mScroller.abortAnimation(); 3706 mTouchMode = TOUCH_DRAG_START_MODE; 3707 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 3708 } else if (mShiftIsPressed) { 3709 mSelectX = mScrollX + (int) x; 3710 mSelectY = mScrollY + (int) y; 3711 mTouchMode = TOUCH_SELECT_MODE; 3712 if (DebugFlags.WEB_VIEW) { 3713 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 3714 } 3715 nativeMoveSelection(viewToContentX(mSelectX), 3716 viewToContentY(mSelectY), false); 3717 mTouchSelection = mExtendSelection = true; 3718 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 3719 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 3720 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 3721 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 3722 } else { 3723 // commit the short press action for the previous tap 3724 doShortPress(); 3725 // continue, mTouchMode should be still TOUCH_INIT_MODE 3726 } 3727 } else { 3728 mTouchMode = TOUCH_INIT_MODE; 3729 mPreventDrag = mForwardTouchEvents ? PREVENT_DRAG_MAYBE_YES 3730 : PREVENT_DRAG_NO; 3731 mWebViewCore.sendMessage( 3732 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 3733 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 3734 EventLog.writeEvent(EVENT_LOG_DOUBLE_TAP_DURATION, 3735 (eventTime - mLastTouchUpTime), eventTime); 3736 } 3737 } 3738 // Trigger the link 3739 if (mTouchMode == TOUCH_INIT_MODE 3740 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 3741 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3742 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 3743 } 3744 // Remember where the motion event started 3745 mLastTouchX = x; 3746 mLastTouchY = y; 3747 mLastTouchTime = eventTime; 3748 mVelocityTracker = VelocityTracker.obtain(); 3749 mSnapScrollMode = SNAP_NONE; 3750 break; 3751 } 3752 case MotionEvent.ACTION_MOVE: { 3753 if (mTouchMode == TOUCH_DONE_MODE) { 3754 // no dragging during scroll zoom animation 3755 break; 3756 } 3757 mVelocityTracker.addMovement(ev); 3758 3759 if (mTouchMode != TOUCH_DRAG_MODE) { 3760 if (mTouchMode == TOUCH_SELECT_MODE) { 3761 mSelectX = mScrollX + (int) x; 3762 mSelectY = mScrollY + (int) y; 3763 if (DebugFlags.WEB_VIEW) { 3764 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 3765 } 3766 nativeMoveSelection(viewToContentX(mSelectX), 3767 viewToContentY(mSelectY), true); 3768 invalidate(); 3769 break; 3770 } 3771 if ((deltaX * deltaX + deltaY * deltaY) < mTouchSlopSquare) { 3772 break; 3773 } 3774 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 3775 // track mLastTouchTime as we may need to do fling at 3776 // ACTION_UP 3777 mLastTouchTime = eventTime; 3778 break; 3779 } 3780 if (mTouchMode == TOUCH_SHORTPRESS_MODE 3781 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3782 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3783 } else if (mTouchMode == TOUCH_INIT_MODE 3784 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 3785 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3786 } 3787 3788 // if it starts nearly horizontal or vertical, enforce it 3789 int ax = Math.abs(deltaX); 3790 int ay = Math.abs(deltaY); 3791 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 3792 mSnapScrollMode = SNAP_X; 3793 mSnapPositive = deltaX > 0; 3794 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 3795 mSnapScrollMode = SNAP_Y; 3796 mSnapPositive = deltaY > 0; 3797 } 3798 3799 mTouchMode = TOUCH_DRAG_MODE; 3800 WebViewCore.pauseUpdate(mWebViewCore); 3801 if (!mDragFromTextInput) { 3802 nativeHideCursor(); 3803 } 3804 WebSettings settings = getSettings(); 3805 if (settings.supportZoom() 3806 && settings.getBuiltInZoomControls() 3807 && !mZoomButtonsController.isVisible() 3808 && mMinZoomScale < mMaxZoomScale) { 3809 mZoomButtonsController.setVisible(true); 3810 int count = settings.getDoubleTapToastCount(); 3811 if (mInZoomOverview && count > 0) { 3812 settings.setDoubleTapToastCount(--count); 3813 Toast.makeText(mContext, 3814 com.android.internal.R.string.double_tap_toast, 3815 Toast.LENGTH_LONG).show(); 3816 } 3817 } 3818 } 3819 3820 // do pan 3821 int newScrollX = pinLocX(mScrollX + deltaX); 3822 deltaX = newScrollX - mScrollX; 3823 int newScrollY = pinLocY(mScrollY + deltaY); 3824 deltaY = newScrollY - mScrollY; 3825 boolean done = false; 3826 if (deltaX == 0 && deltaY == 0) { 3827 done = true; 3828 } else { 3829 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 3830 int ax = Math.abs(deltaX); 3831 int ay = Math.abs(deltaY); 3832 if (mSnapScrollMode == SNAP_X) { 3833 // radical change means getting out of snap mode 3834 if (ay > MAX_SLOPE_FOR_DIAG * ax 3835 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3836 mSnapScrollMode = SNAP_NONE; 3837 } 3838 // reverse direction means lock in the snap mode 3839 if ((ax > MAX_SLOPE_FOR_DIAG * ay) && 3840 ((mSnapPositive && 3841 deltaX < -mMinLockSnapReverseDistance) 3842 || (!mSnapPositive && 3843 deltaX > mMinLockSnapReverseDistance))) { 3844 mSnapScrollMode = SNAP_X_LOCK; 3845 } 3846 } else { 3847 // radical change means getting out of snap mode 3848 if ((ax > MAX_SLOPE_FOR_DIAG * ay) 3849 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3850 mSnapScrollMode = SNAP_NONE; 3851 } 3852 // reverse direction means lock in the snap mode 3853 if ((ay > MAX_SLOPE_FOR_DIAG * ax) && 3854 ((mSnapPositive && 3855 deltaY < -mMinLockSnapReverseDistance) 3856 || (!mSnapPositive && 3857 deltaY > mMinLockSnapReverseDistance))) { 3858 mSnapScrollMode = SNAP_Y_LOCK; 3859 } 3860 } 3861 } 3862 3863 if (mSnapScrollMode == SNAP_X 3864 || mSnapScrollMode == SNAP_X_LOCK) { 3865 scrollBy(deltaX, 0); 3866 mLastTouchX = x; 3867 } else if (mSnapScrollMode == SNAP_Y 3868 || mSnapScrollMode == SNAP_Y_LOCK) { 3869 scrollBy(0, deltaY); 3870 mLastTouchY = y; 3871 } else { 3872 scrollBy(deltaX, deltaY); 3873 mLastTouchX = x; 3874 mLastTouchY = y; 3875 } 3876 mLastTouchTime = eventTime; 3877 mUserScroll = true; 3878 } 3879 3880 if (!getSettings().getBuiltInZoomControls()) { 3881 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 3882 if (mZoomControls != null && showPlusMinus) { 3883 if (mZoomControls.getVisibility() == View.VISIBLE) { 3884 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 3885 } else { 3886 mZoomControls.show(showPlusMinus, false); 3887 } 3888 mPrivateHandler.postDelayed(mZoomControlRunnable, 3889 ZOOM_CONTROLS_TIMEOUT); 3890 } 3891 } 3892 3893 if (done) { 3894 // return false to indicate that we can't pan out of the 3895 // view space 3896 return false; 3897 } 3898 break; 3899 } 3900 case MotionEvent.ACTION_UP: { 3901 mLastTouchUpTime = eventTime; 3902 switch (mTouchMode) { 3903 case TOUCH_DOUBLE_TAP_MODE: // double tap 3904 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3905 mTouchMode = TOUCH_DONE_MODE; 3906 doDoubleTap(); 3907 break; 3908 case TOUCH_SELECT_MODE: 3909 commitCopy(); 3910 mTouchSelection = false; 3911 break; 3912 case TOUCH_INIT_MODE: // tap 3913 case TOUCH_SHORTPRESS_START_MODE: 3914 case TOUCH_SHORTPRESS_MODE: 3915 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3916 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3917 if ((deltaX * deltaX + deltaY * deltaY) > mTouchSlopSquare) { 3918 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 3919 " WebCore's response for touch down."); 3920 if (computeHorizontalScrollExtent() < computeHorizontalScrollRange() 3921 || computeVerticalScrollExtent() < computeVerticalScrollRange()) { 3922 // we will not rewrite drag code here, but we 3923 // will try fling if it applies. 3924 WebViewCore.pauseUpdate(mWebViewCore); 3925 // fall through to TOUCH_DRAG_MODE 3926 } else { 3927 break; 3928 } 3929 } else { 3930 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 3931 // if mPreventDrag is not confirmed, treat it as 3932 // no so that it won't block tap or double tap. 3933 mPreventDrag = PREVENT_DRAG_NO; 3934 } 3935 if (mPreventDrag == PREVENT_DRAG_NO) { 3936 if (mTouchMode == TOUCH_INIT_MODE) { 3937 mPrivateHandler.sendMessageDelayed( 3938 mPrivateHandler.obtainMessage( 3939 RELEASE_SINGLE_TAP), 3940 ViewConfiguration.getDoubleTapTimeout()); 3941 } else { 3942 mTouchMode = TOUCH_DONE_MODE; 3943 doShortPress(); 3944 } 3945 } 3946 break; 3947 } 3948 case TOUCH_DRAG_MODE: 3949 // redraw in high-quality, as we're done dragging 3950 invalidate(); 3951 // if the user waits a while w/o moving before the 3952 // up, we don't want to do a fling 3953 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 3954 mVelocityTracker.addMovement(ev); 3955 doFling(); 3956 break; 3957 } 3958 mLastVelocity = 0; 3959 WebViewCore.resumeUpdate(mWebViewCore); 3960 break; 3961 case TOUCH_DRAG_START_MODE: 3962 case TOUCH_DONE_MODE: 3963 // do nothing 3964 break; 3965 } 3966 // we also use mVelocityTracker == null to tell us that we are 3967 // not "moving around", so we can take the slower/prettier 3968 // mode in the drawing code 3969 if (mVelocityTracker != null) { 3970 mVelocityTracker.recycle(); 3971 mVelocityTracker = null; 3972 } 3973 break; 3974 } 3975 case MotionEvent.ACTION_CANCEL: { 3976 // we also use mVelocityTracker == null to tell us that we are 3977 // not "moving around", so we can take the slower/prettier 3978 // mode in the drawing code 3979 if (mVelocityTracker != null) { 3980 mVelocityTracker.recycle(); 3981 mVelocityTracker = null; 3982 } 3983 if (mTouchMode == TOUCH_DRAG_MODE) { 3984 WebViewCore.resumeUpdate(mWebViewCore); 3985 } 3986 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3987 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3988 mTouchMode = TOUCH_DONE_MODE; 3989 nativeHideCursor(); 3990 break; 3991 } 3992 } 3993 return true; 3994 } 3995 3996 private long mTrackballFirstTime = 0; 3997 private long mTrackballLastTime = 0; 3998 private float mTrackballRemainsX = 0.0f; 3999 private float mTrackballRemainsY = 0.0f; 4000 private int mTrackballXMove = 0; 4001 private int mTrackballYMove = 0; 4002 private boolean mExtendSelection = false; 4003 private boolean mTouchSelection = false; 4004 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4005 private static final int TRACKBALL_TIMEOUT = 200; 4006 private static final int TRACKBALL_WAIT = 100; 4007 private static final int TRACKBALL_SCALE = 400; 4008 private static final int TRACKBALL_SCROLL_COUNT = 5; 4009 private static final int TRACKBALL_MOVE_COUNT = 10; 4010 private static final int TRACKBALL_MULTIPLIER = 3; 4011 private static final int SELECT_CURSOR_OFFSET = 16; 4012 private int mSelectX = 0; 4013 private int mSelectY = 0; 4014 private boolean mShiftIsPressed = false; 4015 private boolean mTrackballDown = false; 4016 private long mTrackballUpTime = 0; 4017 private long mLastCursorTime = 0; 4018 private Rect mLastCursorBounds; 4019 4020 // Set by default; BrowserActivity clears to interpret trackball data 4021 // directly for movement. Currently, the framework only passes 4022 // arrow key events, not trackball events, from one child to the next 4023 private boolean mMapTrackballToArrowKeys = true; 4024 4025 public void setMapTrackballToArrowKeys(boolean setMap) { 4026 mMapTrackballToArrowKeys = setMap; 4027 } 4028 4029 void resetTrackballTime() { 4030 mTrackballLastTime = 0; 4031 } 4032 4033 @Override 4034 public boolean onTrackballEvent(MotionEvent ev) { 4035 long time = ev.getEventTime(); 4036 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4037 if (ev.getY() > 0) pageDown(true); 4038 if (ev.getY() < 0) pageUp(true); 4039 return true; 4040 } 4041 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4042 mTrackballDown = true; 4043 if (mNativeClass == 0) { 4044 return false; 4045 } 4046 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4047 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4048 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4049 nativeSelectBestAt(mLastCursorBounds); 4050 } 4051 if (DebugFlags.WEB_VIEW) { 4052 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4053 + " time=" + time 4054 + " mLastCursorTime=" + mLastCursorTime); 4055 } 4056 if (isInTouchMode()) requestFocusFromTouch(); 4057 return false; // let common code in onKeyDown at it 4058 } 4059 if (ev.getAction() == MotionEvent.ACTION_UP) { 4060 // LONG_PRESS_CENTER is set in common onKeyDown 4061 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4062 mTrackballDown = false; 4063 mTrackballUpTime = time; 4064 if (mShiftIsPressed) { 4065 if (mExtendSelection) { 4066 commitCopy(); 4067 } else { 4068 mExtendSelection = true; 4069 } 4070 } 4071 if (DebugFlags.WEB_VIEW) { 4072 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4073 + " time=" + time 4074 ); 4075 } 4076 return false; // let common code in onKeyUp at it 4077 } 4078 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4079 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4080 return false; 4081 } 4082 if (mTrackballDown) { 4083 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4084 return true; // discard move if trackball is down 4085 } 4086 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4087 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4088 return true; 4089 } 4090 // TODO: alternatively we can do panning as touch does 4091 switchOutDrawHistory(); 4092 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4093 if (DebugFlags.WEB_VIEW) { 4094 Log.v(LOGTAG, "onTrackballEvent time=" 4095 + time + " last=" + mTrackballLastTime); 4096 } 4097 mTrackballFirstTime = time; 4098 mTrackballXMove = mTrackballYMove = 0; 4099 } 4100 mTrackballLastTime = time; 4101 if (DebugFlags.WEB_VIEW) { 4102 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4103 } 4104 mTrackballRemainsX += ev.getX(); 4105 mTrackballRemainsY += ev.getY(); 4106 doTrackball(time); 4107 return true; 4108 } 4109 4110 void moveSelection(float xRate, float yRate) { 4111 if (mNativeClass == 0) 4112 return; 4113 int width = getViewWidth(); 4114 int height = getViewHeight(); 4115 mSelectX += scaleTrackballX(xRate, width); 4116 mSelectY += scaleTrackballY(yRate, height); 4117 int maxX = width + mScrollX; 4118 int maxY = height + mScrollY; 4119 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 4120 , mSelectX)); 4121 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 4122 , mSelectY)); 4123 if (DebugFlags.WEB_VIEW) { 4124 Log.v(LOGTAG, "moveSelection" 4125 + " mSelectX=" + mSelectX 4126 + " mSelectY=" + mSelectY 4127 + " mScrollX=" + mScrollX 4128 + " mScrollY=" + mScrollY 4129 + " xRate=" + xRate 4130 + " yRate=" + yRate 4131 ); 4132 } 4133 nativeMoveSelection(viewToContentX(mSelectX), 4134 viewToContentY(mSelectY), mExtendSelection); 4135 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 4136 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4137 : 0; 4138 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 4139 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4140 : 0; 4141 pinScrollBy(scrollX, scrollY, true, 0); 4142 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 4143 requestRectangleOnScreen(select); 4144 invalidate(); 4145 } 4146 4147 private int scaleTrackballX(float xRate, int width) { 4148 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4149 int nextXMove = xMove; 4150 if (xMove > 0) { 4151 if (xMove > mTrackballXMove) { 4152 xMove -= mTrackballXMove; 4153 } 4154 } else if (xMove < mTrackballXMove) { 4155 xMove -= mTrackballXMove; 4156 } 4157 mTrackballXMove = nextXMove; 4158 return xMove; 4159 } 4160 4161 private int scaleTrackballY(float yRate, int height) { 4162 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 4163 int nextYMove = yMove; 4164 if (yMove > 0) { 4165 if (yMove > mTrackballYMove) { 4166 yMove -= mTrackballYMove; 4167 } 4168 } else if (yMove < mTrackballYMove) { 4169 yMove -= mTrackballYMove; 4170 } 4171 mTrackballYMove = nextYMove; 4172 return yMove; 4173 } 4174 4175 private int keyCodeToSoundsEffect(int keyCode) { 4176 switch(keyCode) { 4177 case KeyEvent.KEYCODE_DPAD_UP: 4178 return SoundEffectConstants.NAVIGATION_UP; 4179 case KeyEvent.KEYCODE_DPAD_RIGHT: 4180 return SoundEffectConstants.NAVIGATION_RIGHT; 4181 case KeyEvent.KEYCODE_DPAD_DOWN: 4182 return SoundEffectConstants.NAVIGATION_DOWN; 4183 case KeyEvent.KEYCODE_DPAD_LEFT: 4184 return SoundEffectConstants.NAVIGATION_LEFT; 4185 } 4186 throw new IllegalArgumentException("keyCode must be one of " + 4187 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 4188 "KEYCODE_DPAD_LEFT}."); 4189 } 4190 4191 private void doTrackball(long time) { 4192 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 4193 if (elapsed == 0) { 4194 elapsed = TRACKBALL_TIMEOUT; 4195 } 4196 float xRate = mTrackballRemainsX * 1000 / elapsed; 4197 float yRate = mTrackballRemainsY * 1000 / elapsed; 4198 if (mShiftIsPressed) { 4199 moveSelection(xRate, yRate); 4200 mTrackballRemainsX = mTrackballRemainsY = 0; 4201 return; 4202 } 4203 float ax = Math.abs(xRate); 4204 float ay = Math.abs(yRate); 4205 float maxA = Math.max(ax, ay); 4206 if (DebugFlags.WEB_VIEW) { 4207 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 4208 + " xRate=" + xRate 4209 + " yRate=" + yRate 4210 + " mTrackballRemainsX=" + mTrackballRemainsX 4211 + " mTrackballRemainsY=" + mTrackballRemainsY); 4212 } 4213 int width = mContentWidth - getViewWidth(); 4214 int height = mContentHeight - getViewHeight(); 4215 if (width < 0) width = 0; 4216 if (height < 0) height = 0; 4217 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 4218 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 4219 maxA = Math.max(ax, ay); 4220 int count = Math.max(0, (int) maxA); 4221 int oldScrollX = mScrollX; 4222 int oldScrollY = mScrollY; 4223 if (count > 0) { 4224 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 4225 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 4226 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 4227 KeyEvent.KEYCODE_DPAD_RIGHT; 4228 count = Math.min(count, TRACKBALL_MOVE_COUNT); 4229 if (DebugFlags.WEB_VIEW) { 4230 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 4231 + " count=" + count 4232 + " mTrackballRemainsX=" + mTrackballRemainsX 4233 + " mTrackballRemainsY=" + mTrackballRemainsY); 4234 } 4235 if (navHandledKey(selectKeyCode, count, false, time, false)) { 4236 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 4237 } 4238 mTrackballRemainsX = mTrackballRemainsY = 0; 4239 } 4240 if (count >= TRACKBALL_SCROLL_COUNT) { 4241 int xMove = scaleTrackballX(xRate, width); 4242 int yMove = scaleTrackballY(yRate, height); 4243 if (DebugFlags.WEB_VIEW) { 4244 Log.v(LOGTAG, "doTrackball pinScrollBy" 4245 + " count=" + count 4246 + " xMove=" + xMove + " yMove=" + yMove 4247 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 4248 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 4249 ); 4250 } 4251 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 4252 xMove = 0; 4253 } 4254 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 4255 yMove = 0; 4256 } 4257 if (xMove != 0 || yMove != 0) { 4258 pinScrollBy(xMove, yMove, true, 0); 4259 } 4260 mUserScroll = true; 4261 } 4262 } 4263 4264 private int computeMaxScrollY() { 4265 int maxContentH = computeVerticalScrollRange() + getTitleHeight(); 4266 return Math.max(maxContentH - getHeight(), getTitleHeight()); 4267 } 4268 4269 public void flingScroll(int vx, int vy) { 4270 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4271 int maxY = computeMaxScrollY(); 4272 4273 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 4274 invalidate(); 4275 } 4276 4277 private void doFling() { 4278 if (mVelocityTracker == null) { 4279 return; 4280 } 4281 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4282 int maxY = computeMaxScrollY(); 4283 4284 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 4285 int vx = (int) mVelocityTracker.getXVelocity(); 4286 int vy = (int) mVelocityTracker.getYVelocity(); 4287 4288 if (mSnapScrollMode != SNAP_NONE) { 4289 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_X_LOCK) { 4290 vy = 0; 4291 } else { 4292 vx = 0; 4293 } 4294 } 4295 4296 if (true /* EMG release: make our fling more like Maps' */) { 4297 // maps cuts their velocity in half 4298 vx = vx * 3 / 4; 4299 vy = vy * 3 / 4; 4300 } 4301 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 4302 WebViewCore.resumeUpdate(mWebViewCore); 4303 return; 4304 } 4305 float currentVelocity = mScroller.getCurrVelocity(); 4306 if (mLastVelocity > 0 && currentVelocity > 0) { 4307 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 4308 - Math.atan2(vy, vx))); 4309 final float circle = (float) (Math.PI) * 2.0f; 4310 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 4311 vx += currentVelocity * mLastVelX / mLastVelocity; 4312 vy += currentVelocity * mLastVelY / mLastVelocity; 4313 if (DebugFlags.WEB_VIEW) { 4314 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 4315 } 4316 } else if (DebugFlags.WEB_VIEW) { 4317 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 4318 } 4319 } else if (DebugFlags.WEB_VIEW) { 4320 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 4321 + " current=" + currentVelocity 4322 + " vx=" + vx + " vy=" + vy 4323 + " maxX=" + maxX + " maxY=" + maxY 4324 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 4325 } 4326 mLastVelX = vx; 4327 mLastVelY = vy; 4328 mLastVelocity = (float) Math.hypot(vx, vy); 4329 4330 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 4331 // TODO: duration is calculated based on velocity, if the range is 4332 // small, the animation will stop before duration is up. We may 4333 // want to calculate how long the animation is going to run to precisely 4334 // resume the webcore update. 4335 final int time = mScroller.getDuration(); 4336 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_UPDATE, time); 4337 awakenScrollBars(time); 4338 invalidate(); 4339 } 4340 4341 private boolean zoomWithPreview(float scale) { 4342 float oldScale = mActualScale; 4343 mInitialScrollX = mScrollX; 4344 mInitialScrollY = mScrollY; 4345 4346 // snap to DEFAULT_SCALE if it is close 4347 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 4348 scale = mDefaultScale; 4349 } 4350 4351 setNewZoomScale(scale, false); 4352 4353 if (oldScale != mActualScale) { 4354 // use mZoomPickerScale to see zoom preview first 4355 mZoomStart = SystemClock.uptimeMillis(); 4356 mInvInitialZoomScale = 1.0f / oldScale; 4357 mInvFinalZoomScale = 1.0f / mActualScale; 4358 mZoomScale = mActualScale; 4359 if (!mInZoomOverview) { 4360 mLastScale = scale; 4361 } 4362 invalidate(); 4363 return true; 4364 } else { 4365 return false; 4366 } 4367 } 4368 4369 /** 4370 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 4371 * in charge of installing this view to the view hierarchy. This view will 4372 * become visible when the user starts scrolling via touch and fade away if 4373 * the user does not interact with it. 4374 * <p/> 4375 * API version 3 introduces a built-in zoom mechanism that is shown 4376 * automatically by the MapView. This is the preferred approach for 4377 * showing the zoom UI. 4378 * 4379 * @deprecated The built-in zoom mechanism is preferred, see 4380 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 4381 */ 4382 @Deprecated 4383 public View getZoomControls() { 4384 if (!getSettings().supportZoom()) { 4385 Log.w(LOGTAG, "This WebView doesn't support zoom."); 4386 return null; 4387 } 4388 if (mZoomControls == null) { 4389 mZoomControls = createZoomControls(); 4390 4391 /* 4392 * need to be set to VISIBLE first so that getMeasuredHeight() in 4393 * {@link #onSizeChanged()} can return the measured value for proper 4394 * layout. 4395 */ 4396 mZoomControls.setVisibility(View.VISIBLE); 4397 mZoomControlRunnable = new Runnable() { 4398 public void run() { 4399 4400 /* Don't dismiss the controls if the user has 4401 * focus on them. Wait and check again later. 4402 */ 4403 if (!mZoomControls.hasFocus()) { 4404 mZoomControls.hide(); 4405 } else { 4406 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4407 mPrivateHandler.postDelayed(mZoomControlRunnable, 4408 ZOOM_CONTROLS_TIMEOUT); 4409 } 4410 } 4411 }; 4412 } 4413 return mZoomControls; 4414 } 4415 4416 private ExtendedZoomControls createZoomControls() { 4417 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 4418 , null); 4419 zoomControls.setOnZoomInClickListener(new OnClickListener() { 4420 public void onClick(View v) { 4421 // reset time out 4422 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4423 mPrivateHandler.postDelayed(mZoomControlRunnable, 4424 ZOOM_CONTROLS_TIMEOUT); 4425 zoomIn(); 4426 } 4427 }); 4428 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 4429 public void onClick(View v) { 4430 // reset time out 4431 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4432 mPrivateHandler.postDelayed(mZoomControlRunnable, 4433 ZOOM_CONTROLS_TIMEOUT); 4434 zoomOut(); 4435 } 4436 }); 4437 return zoomControls; 4438 } 4439 4440 /** 4441 * Gets the {@link ZoomButtonsController} which can be used to add 4442 * additional buttons to the zoom controls window. 4443 * 4444 * @return The instance of {@link ZoomButtonsController} used by this class, 4445 * or null if it is unavailable. 4446 * @hide 4447 */ 4448 public ZoomButtonsController getZoomButtonsController() { 4449 return mZoomButtonsController; 4450 } 4451 4452 /** 4453 * Perform zoom in in the webview 4454 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 4455 */ 4456 public boolean zoomIn() { 4457 // TODO: alternatively we can disallow this during draw history mode 4458 switchOutDrawHistory(); 4459 // Center zooming to the center of the screen. 4460 if (mInZoomOverview) { 4461 // if in overview mode, bring it back to normal mode 4462 mLastTouchX = getViewWidth() * .5f; 4463 mLastTouchY = getViewHeight() * .5f; 4464 doDoubleTap(); 4465 return true; 4466 } else { 4467 mZoomCenterX = getViewWidth() * .5f; 4468 mZoomCenterY = getViewHeight() * .5f; 4469 return zoomWithPreview(mActualScale * 1.25f); 4470 } 4471 } 4472 4473 /** 4474 * Perform zoom out in the webview 4475 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 4476 */ 4477 public boolean zoomOut() { 4478 // TODO: alternatively we can disallow this during draw history mode 4479 switchOutDrawHistory(); 4480 float scale = mActualScale * 0.8f; 4481 if (scale < (mMinZoomScale + 0.1f) 4482 && mWebViewCore.getSettings().getUseWideViewPort()) { 4483 // when zoom out to min scale, switch to overview mode 4484 doDoubleTap(); 4485 return true; 4486 } else { 4487 // Center zooming to the center of the screen. 4488 mZoomCenterX = getViewWidth() * .5f; 4489 mZoomCenterY = getViewHeight() * .5f; 4490 return zoomWithPreview(scale); 4491 } 4492 } 4493 4494 private void updateSelection() { 4495 if (mNativeClass == 0) { 4496 return; 4497 } 4498 // mLastTouchX and mLastTouchY are the point in the current viewport 4499 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 4500 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 4501 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 4502 contentX + mNavSlop, contentY + mNavSlop); 4503 nativeSelectBestAt(rect); 4504 } 4505 4506 /** 4507 * Scroll the focused text field/area to match the WebTextView 4508 * @param x New x position of the WebTextView in view coordinates 4509 * @param y New y position of the WebTextView in view coordinates 4510 */ 4511 /*package*/ void scrollFocusedTextInput(int x, int y) { 4512 if (!inEditingMode() || mWebViewCore == null) { 4513 return; 4514 } 4515 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, viewToContentX(x), 4516 // Since this position is relative to the top of the text input 4517 // field, we do not need to take the title bar's height into 4518 // consideration. 4519 viewToContentDimension(y)); 4520 } 4521 4522 /** 4523 * Set our starting point and time for a drag from the WebTextView. 4524 */ 4525 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 4526 if (!inEditingMode()) { 4527 return; 4528 } 4529 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 4530 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 4531 mLastTouchTime = eventTime; 4532 if (!mScroller.isFinished()) { 4533 abortAnimation(); 4534 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 4535 } 4536 mSnapScrollMode = SNAP_NONE; 4537 mVelocityTracker = VelocityTracker.obtain(); 4538 mTouchMode = TOUCH_DRAG_START_MODE; 4539 } 4540 4541 /** 4542 * Given a motion event from the WebTextView, set its location to our 4543 * coordinates, and handle the event. 4544 */ 4545 /*package*/ boolean textFieldDrag(MotionEvent event) { 4546 if (!inEditingMode()) { 4547 return false; 4548 } 4549 mDragFromTextInput = true; 4550 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 4551 (float) (mWebTextView.getTop() - mScrollY)); 4552 boolean result = onTouchEvent(event); 4553 mDragFromTextInput = false; 4554 return result; 4555 } 4556 4557 /** 4558 * Do a touch up from a WebTextView. This will be handled by webkit to 4559 * change the selection. 4560 * @param event MotionEvent in the WebTextView's coordinates. 4561 */ 4562 /*package*/ void touchUpOnTextField(MotionEvent event) { 4563 if (!inEditingMode()) { 4564 return; 4565 } 4566 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 4567 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 4568 // In case the soft keyboard has been dismissed, bring it back up. 4569 InputMethodManager.getInstance(getContext()).showSoftInput(mWebTextView, 4570 0); 4571 if (nativeFocusNodePointer() != nativeCursorNodePointer()) { 4572 nativeMotionUp(x, y, mNavSlop); 4573 } 4574 nativeTextInputMotionUp(x, y); 4575 } 4576 4577 /*package*/ void shortPressOnTextField() { 4578 if (inEditingMode()) { 4579 View v = mWebTextView; 4580 int x = viewToContentX((v.getLeft() + v.getRight()) >> 1); 4581 int y = viewToContentY((v.getTop() + v.getBottom()) >> 1); 4582 nativeTextInputMotionUp(x, y); 4583 } 4584 } 4585 4586 private void doShortPress() { 4587 if (mNativeClass == 0) { 4588 return; 4589 } 4590 switchOutDrawHistory(); 4591 // mLastTouchX and mLastTouchY are the point in the current viewport 4592 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 4593 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 4594 if (nativeMotionUp(contentX, contentY, mNavSlop)) { 4595 if (mLogEvent) { 4596 Checkin.updateStats(mContext.getContentResolver(), 4597 Checkin.Stats.Tag.BROWSER_SNAP_CENTER, 1, 0.0); 4598 } 4599 } 4600 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 4601 playSoundEffect(SoundEffectConstants.CLICK); 4602 } 4603 } 4604 4605 private void doDoubleTap() { 4606 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 4607 return; 4608 } 4609 mZoomCenterX = mLastTouchX; 4610 mZoomCenterY = mLastTouchY; 4611 mInZoomOverview = !mInZoomOverview; 4612 // remove the zoom control after double tap 4613 WebSettings settings = getSettings(); 4614 if (settings.getBuiltInZoomControls()) { 4615 if (mZoomButtonsController.isVisible()) { 4616 mZoomButtonsController.setVisible(false); 4617 } 4618 } else { 4619 if (mZoomControlRunnable != null) { 4620 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4621 } 4622 if (mZoomControls != null) { 4623 mZoomControls.hide(); 4624 } 4625 } 4626 settings.setDoubleTapToastCount(0); 4627 if (mInZoomOverview) { 4628 // Force the titlebar fully reveal in overview mode 4629 if (mScrollY < getTitleHeight()) mScrollY = 0; 4630 zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth); 4631 } else { 4632 // mLastTouchX and mLastTouchY are the point in the current viewport 4633 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 4634 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 4635 int left = nativeGetBlockLeftEdge(contentX, contentY, mActualScale); 4636 if (left != NO_LEFTEDGE) { 4637 // add a 5pt padding to the left edge. Re-calculate the zoom 4638 // center so that the new scroll x will be on the left edge. 4639 mZoomCenterX = left < 5 ? 0 : (left - 5) * mLastScale 4640 * mActualScale / (mLastScale - mActualScale); 4641 } 4642 zoomWithPreview(mLastScale); 4643 } 4644 } 4645 4646 // Called by JNI to handle a touch on a node representing an email address, 4647 // address, or phone number 4648 private void overrideLoading(String url) { 4649 mCallbackProxy.uiOverrideUrlLoading(url); 4650 } 4651 4652 // called by JNI 4653 private void sendPluginState(int state) { 4654 WebViewCore.PluginStateData psd = new WebViewCore.PluginStateData(); 4655 psd.mFrame = nativeCursorFramePointer(); 4656 psd.mNode = nativeCursorNodePointer(); 4657 psd.mState = state; 4658 mWebViewCore.sendMessage(EventHub.PLUGIN_STATE, psd); 4659 } 4660 4661 @Override 4662 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 4663 boolean result = false; 4664 if (inEditingMode()) { 4665 result = mWebTextView.requestFocus(direction, 4666 previouslyFocusedRect); 4667 } else { 4668 result = super.requestFocus(direction, previouslyFocusedRect); 4669 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 4670 // For cases such as GMail, where we gain focus from a direction, 4671 // we want to move to the first available link. 4672 // FIXME: If there are no visible links, we may not want to 4673 int fakeKeyDirection = 0; 4674 switch(direction) { 4675 case View.FOCUS_UP: 4676 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 4677 break; 4678 case View.FOCUS_DOWN: 4679 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 4680 break; 4681 case View.FOCUS_LEFT: 4682 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 4683 break; 4684 case View.FOCUS_RIGHT: 4685 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 4686 break; 4687 default: 4688 return result; 4689 } 4690 if (mNativeClass != 0 && !nativeHasCursorNode()) { 4691 navHandledKey(fakeKeyDirection, 1, true, 0, true); 4692 } 4693 } 4694 } 4695 return result; 4696 } 4697 4698 @Override 4699 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 4700 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 4701 4702 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 4703 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 4704 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 4705 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 4706 4707 int measuredHeight = heightSize; 4708 int measuredWidth = widthSize; 4709 4710 // Grab the content size from WebViewCore. 4711 int contentHeight = contentToViewDimension(mContentHeight); 4712 int contentWidth = contentToViewDimension(mContentWidth); 4713 4714// Log.d(LOGTAG, "------- measure " + heightMode); 4715 4716 if (heightMode != MeasureSpec.EXACTLY) { 4717 mHeightCanMeasure = true; 4718 measuredHeight = contentHeight; 4719 if (heightMode == MeasureSpec.AT_MOST) { 4720 // If we are larger than the AT_MOST height, then our height can 4721 // no longer be measured and we should scroll internally. 4722 if (measuredHeight > heightSize) { 4723 measuredHeight = heightSize; 4724 mHeightCanMeasure = false; 4725 } 4726 } 4727 } else { 4728 mHeightCanMeasure = false; 4729 } 4730 if (mNativeClass != 0) { 4731 nativeSetHeightCanMeasure(mHeightCanMeasure); 4732 } 4733 // For the width, always use the given size unless unspecified. 4734 if (widthMode == MeasureSpec.UNSPECIFIED) { 4735 mWidthCanMeasure = true; 4736 measuredWidth = contentWidth; 4737 } else { 4738 mWidthCanMeasure = false; 4739 } 4740 4741 synchronized (this) { 4742 setMeasuredDimension(measuredWidth, measuredHeight); 4743 } 4744 } 4745 4746 @Override 4747 public boolean requestChildRectangleOnScreen(View child, 4748 Rect rect, 4749 boolean immediate) { 4750 rect.offset(child.getLeft() - child.getScrollX(), 4751 child.getTop() - child.getScrollY()); 4752 4753 int height = getViewHeightWithTitle(); 4754 int screenTop = mScrollY; 4755 int screenBottom = screenTop + height; 4756 4757 int scrollYDelta = 0; 4758 4759 if (rect.bottom > screenBottom) { 4760 int oneThirdOfScreenHeight = height / 3; 4761 if (rect.height() > 2 * oneThirdOfScreenHeight) { 4762 // If the rectangle is too tall to fit in the bottom two thirds 4763 // of the screen, place it at the top. 4764 scrollYDelta = rect.top - screenTop; 4765 } else { 4766 // If the rectangle will still fit on screen, we want its 4767 // top to be in the top third of the screen. 4768 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 4769 } 4770 } else if (rect.top < screenTop) { 4771 scrollYDelta = rect.top - screenTop; 4772 } 4773 4774 int width = getWidth() - getVerticalScrollbarWidth(); 4775 int screenLeft = mScrollX; 4776 int screenRight = screenLeft + width; 4777 4778 int scrollXDelta = 0; 4779 4780 if (rect.right > screenRight && rect.left > screenLeft) { 4781 if (rect.width() > width) { 4782 scrollXDelta += (rect.left - screenLeft); 4783 } else { 4784 scrollXDelta += (rect.right - screenRight); 4785 } 4786 } else if (rect.left < screenLeft) { 4787 scrollXDelta -= (screenLeft - rect.left); 4788 } 4789 4790 if ((scrollYDelta | scrollXDelta) != 0) { 4791 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 4792 } 4793 4794 return false; 4795 } 4796 4797 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 4798 String replace, int newStart, int newEnd) { 4799 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 4800 arg.mReplace = replace; 4801 arg.mNewStart = newStart; 4802 arg.mNewEnd = newEnd; 4803 mTextGeneration++; 4804 arg.mTextGeneration = mTextGeneration; 4805 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 4806 } 4807 4808 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 4809 if (nativeCursorWantsKeyEvents() && !nativeCursorMatchesFocus()) { 4810 mWebViewCore.sendMessage(EventHub.CLICK); 4811 int select = nativeFocusCandidateIsTextField() ? 4812 nativeFocusCandidateMaxLength() : 0; 4813 setSelection(select, select); 4814 } 4815 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 4816 arg.mEvent = event; 4817 arg.mCurrentText = currentText; 4818 // Increase our text generation number, and pass it to webcore thread 4819 mTextGeneration++; 4820 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 4821 // WebKit's document state is not saved until about to leave the page. 4822 // To make sure the host application, like Browser, has the up to date 4823 // document state when it goes to background, we force to save the 4824 // document state. 4825 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 4826 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 4827 cursorData(), 1000); 4828 } 4829 4830 /* package */ WebViewCore getWebViewCore() { 4831 return mWebViewCore; 4832 } 4833 4834 //------------------------------------------------------------------------- 4835 // Methods can be called from a separate thread, like WebViewCore 4836 // If it needs to call the View system, it has to send message. 4837 //------------------------------------------------------------------------- 4838 4839 /** 4840 * General handler to receive message coming from webkit thread 4841 */ 4842 class PrivateHandler extends Handler { 4843 @Override 4844 public void handleMessage(Message msg) { 4845 if (DebugFlags.WEB_VIEW) { 4846 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 4847 > INVAL_RECT_MSG_ID ? Integer.toString(msg.what) 4848 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 4849 } 4850 if (mWebViewCore == null) { 4851 // after WebView's destroy() is called, skip handling messages. 4852 return; 4853 } 4854 switch (msg.what) { 4855 case REMEMBER_PASSWORD: { 4856 mDatabase.setUsernamePassword( 4857 msg.getData().getString("host"), 4858 msg.getData().getString("username"), 4859 msg.getData().getString("password")); 4860 ((Message) msg.obj).sendToTarget(); 4861 break; 4862 } 4863 case NEVER_REMEMBER_PASSWORD: { 4864 mDatabase.setUsernamePassword( 4865 msg.getData().getString("host"), null, null); 4866 ((Message) msg.obj).sendToTarget(); 4867 break; 4868 } 4869 case SWITCH_TO_SHORTPRESS: { 4870 // if mPreventDrag is not confirmed, treat it as no so that 4871 // it won't block panning the page. 4872 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 4873 mPreventDrag = PREVENT_DRAG_NO; 4874 } 4875 if (mTouchMode == TOUCH_INIT_MODE) { 4876 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 4877 updateSelection(); 4878 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4879 mTouchMode = TOUCH_DONE_MODE; 4880 } 4881 break; 4882 } 4883 case SWITCH_TO_LONGPRESS: { 4884 if (mPreventDrag == PREVENT_DRAG_NO) { 4885 mTouchMode = TOUCH_DONE_MODE; 4886 performLongClick(); 4887 rebuildWebTextView(); 4888 } 4889 break; 4890 } 4891 case RELEASE_SINGLE_TAP: { 4892 if (mPreventDrag == PREVENT_DRAG_NO) { 4893 mTouchMode = TOUCH_DONE_MODE; 4894 doShortPress(); 4895 } 4896 break; 4897 } 4898 case SCROLL_BY_MSG_ID: 4899 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 4900 break; 4901 case SYNC_SCROLL_TO_MSG_ID: 4902 if (mUserScroll) { 4903 // if user has scrolled explicitly, don't sync the 4904 // scroll position any more 4905 mUserScroll = false; 4906 break; 4907 } 4908 // fall through 4909 case SCROLL_TO_MSG_ID: 4910 if (setContentScrollTo(msg.arg1, msg.arg2)) { 4911 // if we can't scroll to the exact position due to pin, 4912 // send a message to WebCore to re-scroll when we get a 4913 // new picture 4914 mUserScroll = false; 4915 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 4916 msg.arg1, msg.arg2); 4917 } 4918 break; 4919 case SPAWN_SCROLL_TO_MSG_ID: 4920 spawnContentScrollTo(msg.arg1, msg.arg2); 4921 break; 4922 case NEW_PICTURE_MSG_ID: { 4923 WebSettings settings = mWebViewCore.getSettings(); 4924 // called for new content 4925 final int viewWidth = getViewWidth(); 4926 final WebViewCore.DrawData draw = 4927 (WebViewCore.DrawData) msg.obj; 4928 final Point viewSize = draw.mViewPoint; 4929 boolean useWideViewport = settings.getUseWideViewPort(); 4930 WebViewCore.RestoreState restoreState = draw.mRestoreState; 4931 if (restoreState != null) { 4932 mInZoomOverview = false; 4933 mLastScale = restoreState.mTextWrapScale; 4934 if (restoreState.mMinScale == 0) { 4935 if (restoreState.mMobileSite) { 4936 if (draw.mMinPrefWidth > 4937 Math.max(0, draw.mViewPoint.x)) { 4938 mMinZoomScale = (float) viewWidth 4939 / draw.mMinPrefWidth; 4940 mMinZoomScaleFixed = false; 4941 } else { 4942 mMinZoomScale = restoreState.mDefaultScale; 4943 mMinZoomScaleFixed = true; 4944 } 4945 } else { 4946 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 4947 mMinZoomScaleFixed = false; 4948 } 4949 } else { 4950 mMinZoomScale = restoreState.mMinScale; 4951 mMinZoomScaleFixed = true; 4952 } 4953 if (restoreState.mMaxScale == 0) { 4954 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 4955 } else { 4956 mMaxZoomScale = restoreState.mMaxScale; 4957 } 4958 setNewZoomScale(mLastScale, false); 4959 setContentScrollTo(restoreState.mScrollX, 4960 restoreState.mScrollY); 4961 if (useWideViewport 4962 && settings.getLoadWithOverviewMode()) { 4963 if (restoreState.mViewScale == 0 4964 || (restoreState.mMobileSite 4965 && mMinZoomScale < restoreState.mDefaultScale)) { 4966 mInZoomOverview = true; 4967 } 4968 } 4969 // As we are on a new page, remove the WebTextView. This 4970 // is necessary for page loads driven by webkit, and in 4971 // particular when the user was on a password field, so 4972 // the WebTextView was visible. 4973 clearTextEntry(); 4974 } 4975 // We update the layout (i.e. request a layout from the 4976 // view system) if the last view size that we sent to 4977 // WebCore matches the view size of the picture we just 4978 // received in the fixed dimension. 4979 final boolean updateLayout = viewSize.x == mLastWidthSent 4980 && viewSize.y == mLastHeightSent; 4981 recordNewContentSize(draw.mWidthHeight.x, 4982 draw.mWidthHeight.y 4983 + (mFindIsUp ? mFindHeight : 0), updateLayout); 4984 if (DebugFlags.WEB_VIEW) { 4985 Rect b = draw.mInvalRegion.getBounds(); 4986 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 4987 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 4988 } 4989 invalidateContentRect(draw.mInvalRegion.getBounds()); 4990 if (mPictureListener != null) { 4991 mPictureListener.onNewPicture(WebView.this, capturePicture()); 4992 } 4993 if (useWideViewport) { 4994 mZoomOverviewWidth = Math.max(draw.mMinPrefWidth, 4995 draw.mViewPoint.x); 4996 } 4997 if (!mMinZoomScaleFixed) { 4998 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 4999 } 5000 if (!mDrawHistory && mInZoomOverview) { 5001 // fit the content width to the current view. Ignore 5002 // the rounding error case. 5003 if (Math.abs((viewWidth * mInvActualScale) 5004 - mZoomOverviewWidth) > 1) { 5005 setNewZoomScale((float) viewWidth 5006 / mZoomOverviewWidth, false); 5007 } 5008 } 5009 break; 5010 } 5011 case WEBCORE_INITIALIZED_MSG_ID: 5012 // nativeCreate sets mNativeClass to a non-zero value 5013 nativeCreate(msg.arg1); 5014 break; 5015 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 5016 // Make sure that the textfield is currently focused 5017 // and representing the same node as the pointer. 5018 if (inEditingMode() && 5019 mWebTextView.isSameTextField(msg.arg1)) { 5020 if (msg.getData().getBoolean("password")) { 5021 Spannable text = (Spannable) mWebTextView.getText(); 5022 int start = Selection.getSelectionStart(text); 5023 int end = Selection.getSelectionEnd(text); 5024 mWebTextView.setInPassword(true); 5025 // Restore the selection, which may have been 5026 // ruined by setInPassword. 5027 Spannable pword = 5028 (Spannable) mWebTextView.getText(); 5029 Selection.setSelection(pword, start, end); 5030 // If the text entry has created more events, ignore 5031 // this one. 5032 } else if (msg.arg2 == mTextGeneration) { 5033 mWebTextView.setTextAndKeepSelection( 5034 (String) msg.obj); 5035 } 5036 } 5037 break; 5038 case UPDATE_TEXT_SELECTION_MSG_ID: 5039 if (inEditingMode() 5040 && mWebTextView.isSameTextField(msg.arg1) 5041 && msg.arg2 == mTextGeneration) { 5042 WebViewCore.TextSelectionData tData 5043 = (WebViewCore.TextSelectionData) msg.obj; 5044 mWebTextView.setSelectionFromWebKit(tData.mStart, 5045 tData.mEnd); 5046 } 5047 break; 5048 case MOVE_OUT_OF_PLUGIN: 5049 if (nativePluginEatsNavKey()) { 5050 navHandledKey(msg.arg1, 1, false, 0, true); 5051 } 5052 break; 5053 case UPDATE_TEXT_ENTRY_MSG_ID: 5054 // this is sent after finishing resize in WebViewCore. Make 5055 // sure the text edit box is still on the screen. 5056 if (inEditingMode() && nativeCursorIsTextInput()) { 5057 mWebTextView.bringIntoView(); 5058 rebuildWebTextView(); 5059 } 5060 break; 5061 case CLEAR_TEXT_ENTRY: 5062 clearTextEntry(); 5063 break; 5064 case INVAL_RECT_MSG_ID: { 5065 Rect r = (Rect)msg.obj; 5066 if (r == null) { 5067 invalidate(); 5068 } else { 5069 // we need to scale r from content into view coords, 5070 // which viewInvalidate() does for us 5071 viewInvalidate(r.left, r.top, r.right, r.bottom); 5072 } 5073 break; 5074 } 5075 case REQUEST_FORM_DATA: 5076 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 5077 if (mWebTextView.isSameTextField(msg.arg1)) { 5078 mWebTextView.setAdapterCustom(adapter); 5079 } 5080 break; 5081 case UPDATE_CLIPBOARD: 5082 String str = (String) msg.obj; 5083 if (DebugFlags.WEB_VIEW) { 5084 Log.v(LOGTAG, "UPDATE_CLIPBOARD " + str); 5085 } 5086 try { 5087 IClipboard clip = IClipboard.Stub.asInterface( 5088 ServiceManager.getService("clipboard")); 5089 clip.setClipboardText(str); 5090 } catch (android.os.RemoteException e) { 5091 Log.e(LOGTAG, "Clipboard failed", e); 5092 } 5093 break; 5094 case RESUME_WEBCORE_UPDATE: 5095 WebViewCore.resumeUpdate(mWebViewCore); 5096 break; 5097 5098 case LONG_PRESS_CENTER: 5099 // as this is shared by keydown and trackballdown, reset all 5100 // the states 5101 mGotCenterDown = false; 5102 mTrackballDown = false; 5103 // LONG_PRESS_CENTER is sent as a delayed message. If we 5104 // switch to windows overview, the WebView will be 5105 // temporarily removed from the view system. In that case, 5106 // do nothing. 5107 if (getParent() != null) { 5108 performLongClick(); 5109 } 5110 break; 5111 5112 case WEBCORE_NEED_TOUCH_EVENTS: 5113 mForwardTouchEvents = (msg.arg1 != 0); 5114 break; 5115 5116 case PREVENT_TOUCH_ID: 5117 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 5118 // dont override if mPreventDrag has been set to no due 5119 // to time out 5120 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5121 mPreventDrag = msg.arg2 == 1 ? PREVENT_DRAG_YES 5122 : PREVENT_DRAG_NO; 5123 if (mPreventDrag == PREVENT_DRAG_YES) { 5124 mTouchMode = TOUCH_DONE_MODE; 5125 } 5126 } 5127 } 5128 break; 5129 5130 case REQUEST_KEYBOARD: 5131 if (msg.arg1 == 0) { 5132 hideSoftKeyboard(); 5133 } else { 5134 displaySoftKeyboard(false); 5135 } 5136 break; 5137 5138 default: 5139 super.handleMessage(msg); 5140 break; 5141 } 5142 } 5143 } 5144 5145 // Class used to use a dropdown for a <select> element 5146 private class InvokeListBox implements Runnable { 5147 // Whether the listbox allows multiple selection. 5148 private boolean mMultiple; 5149 // Passed in to a list with multiple selection to tell 5150 // which items are selected. 5151 private int[] mSelectedArray; 5152 // Passed in to a list with single selection to tell 5153 // where the initial selection is. 5154 private int mSelection; 5155 5156 private Container[] mContainers; 5157 5158 // Need these to provide stable ids to my ArrayAdapter, 5159 // which normally does not have stable ids. (Bug 1250098) 5160 private class Container extends Object { 5161 String mString; 5162 boolean mEnabled; 5163 int mId; 5164 5165 public String toString() { 5166 return mString; 5167 } 5168 } 5169 5170 /** 5171 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 5172 * and allow filtering. 5173 */ 5174 private class MyArrayListAdapter extends ArrayAdapter<Container> { 5175 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 5176 super(context, 5177 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 5178 com.android.internal.R.layout.select_dialog_singlechoice, 5179 objects); 5180 } 5181 5182 @Override 5183 public boolean hasStableIds() { 5184 // AdapterView's onChanged method uses this to determine whether 5185 // to restore the old state. Return false so that the old (out 5186 // of date) state does not replace the new, valid state. 5187 return false; 5188 } 5189 5190 private Container item(int position) { 5191 if (position < 0 || position >= getCount()) { 5192 return null; 5193 } 5194 return (Container) getItem(position); 5195 } 5196 5197 @Override 5198 public long getItemId(int position) { 5199 Container item = item(position); 5200 if (item == null) { 5201 return -1; 5202 } 5203 return item.mId; 5204 } 5205 5206 @Override 5207 public boolean areAllItemsEnabled() { 5208 return false; 5209 } 5210 5211 @Override 5212 public boolean isEnabled(int position) { 5213 Container item = item(position); 5214 if (item == null) { 5215 return false; 5216 } 5217 return item.mEnabled; 5218 } 5219 } 5220 5221 private InvokeListBox(String[] array, 5222 boolean[] enabled, int[] selected) { 5223 mMultiple = true; 5224 mSelectedArray = selected; 5225 5226 int length = array.length; 5227 mContainers = new Container[length]; 5228 for (int i = 0; i < length; i++) { 5229 mContainers[i] = new Container(); 5230 mContainers[i].mString = array[i]; 5231 mContainers[i].mEnabled = enabled[i]; 5232 mContainers[i].mId = i; 5233 } 5234 } 5235 5236 private InvokeListBox(String[] array, boolean[] enabled, int 5237 selection) { 5238 mSelection = selection; 5239 mMultiple = false; 5240 5241 int length = array.length; 5242 mContainers = new Container[length]; 5243 for (int i = 0; i < length; i++) { 5244 mContainers[i] = new Container(); 5245 mContainers[i].mString = array[i]; 5246 mContainers[i].mEnabled = enabled[i]; 5247 mContainers[i].mId = i; 5248 } 5249 } 5250 5251 /* 5252 * Whenever the data set changes due to filtering, this class ensures 5253 * that the checked item remains checked. 5254 */ 5255 private class SingleDataSetObserver extends DataSetObserver { 5256 private long mCheckedId; 5257 private ListView mListView; 5258 private Adapter mAdapter; 5259 5260 /* 5261 * Create a new observer. 5262 * @param id The ID of the item to keep checked. 5263 * @param l ListView for getting and clearing the checked states 5264 * @param a Adapter for getting the IDs 5265 */ 5266 public SingleDataSetObserver(long id, ListView l, Adapter a) { 5267 mCheckedId = id; 5268 mListView = l; 5269 mAdapter = a; 5270 } 5271 5272 public void onChanged() { 5273 // The filter may have changed which item is checked. Find the 5274 // item that the ListView thinks is checked. 5275 int position = mListView.getCheckedItemPosition(); 5276 long id = mAdapter.getItemId(position); 5277 if (mCheckedId != id) { 5278 // Clear the ListView's idea of the checked item, since 5279 // it is incorrect 5280 mListView.clearChoices(); 5281 // Search for mCheckedId. If it is in the filtered list, 5282 // mark it as checked 5283 int count = mAdapter.getCount(); 5284 for (int i = 0; i < count; i++) { 5285 if (mAdapter.getItemId(i) == mCheckedId) { 5286 mListView.setItemChecked(i, true); 5287 break; 5288 } 5289 } 5290 } 5291 } 5292 5293 public void onInvalidate() {} 5294 } 5295 5296 public void run() { 5297 final ListView listView = (ListView) LayoutInflater.from(mContext) 5298 .inflate(com.android.internal.R.layout.select_dialog, null); 5299 final MyArrayListAdapter adapter = new 5300 MyArrayListAdapter(mContext, mContainers, mMultiple); 5301 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 5302 .setView(listView).setCancelable(true) 5303 .setInverseBackgroundForced(true); 5304 5305 if (mMultiple) { 5306 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 5307 public void onClick(DialogInterface dialog, int which) { 5308 mWebViewCore.sendMessage( 5309 EventHub.LISTBOX_CHOICES, 5310 adapter.getCount(), 0, 5311 listView.getCheckedItemPositions()); 5312 }}); 5313 b.setNegativeButton(android.R.string.cancel, 5314 new DialogInterface.OnClickListener() { 5315 public void onClick(DialogInterface dialog, int which) { 5316 mWebViewCore.sendMessage( 5317 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5318 }}); 5319 } 5320 final AlertDialog dialog = b.create(); 5321 listView.setAdapter(adapter); 5322 listView.setFocusableInTouchMode(true); 5323 // There is a bug (1250103) where the checks in a ListView with 5324 // multiple items selected are associated with the positions, not 5325 // the ids, so the items do not properly retain their checks when 5326 // filtered. Do not allow filtering on multiple lists until 5327 // that bug is fixed. 5328 5329 listView.setTextFilterEnabled(!mMultiple); 5330 if (mMultiple) { 5331 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 5332 int length = mSelectedArray.length; 5333 for (int i = 0; i < length; i++) { 5334 listView.setItemChecked(mSelectedArray[i], true); 5335 } 5336 } else { 5337 listView.setOnItemClickListener(new OnItemClickListener() { 5338 public void onItemClick(AdapterView parent, View v, 5339 int position, long id) { 5340 mWebViewCore.sendMessage( 5341 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 5342 dialog.dismiss(); 5343 } 5344 }); 5345 if (mSelection != -1) { 5346 listView.setSelection(mSelection); 5347 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 5348 listView.setItemChecked(mSelection, true); 5349 DataSetObserver observer = new SingleDataSetObserver( 5350 adapter.getItemId(mSelection), listView, adapter); 5351 adapter.registerDataSetObserver(observer); 5352 } 5353 } 5354 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 5355 public void onCancel(DialogInterface dialog) { 5356 mWebViewCore.sendMessage( 5357 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5358 } 5359 }); 5360 dialog.show(); 5361 } 5362 } 5363 5364 /* 5365 * Request a dropdown menu for a listbox with multiple selection. 5366 * 5367 * @param array Labels for the listbox. 5368 * @param enabledArray Which positions are enabled. 5369 * @param selectedArray Which positions are initally selected. 5370 */ 5371 void requestListBox(String[] array, boolean[]enabledArray, int[] 5372 selectedArray) { 5373 mPrivateHandler.post( 5374 new InvokeListBox(array, enabledArray, selectedArray)); 5375 } 5376 5377 /* 5378 * Request a dropdown menu for a listbox with single selection or a single 5379 * <select> element. 5380 * 5381 * @param array Labels for the listbox. 5382 * @param enabledArray Which positions are enabled. 5383 * @param selection Which position is initally selected. 5384 */ 5385 void requestListBox(String[] array, boolean[]enabledArray, int selection) { 5386 mPrivateHandler.post( 5387 new InvokeListBox(array, enabledArray, selection)); 5388 } 5389 5390 // called by JNI 5391 private void sendMoveMouse(int frame, int node, int x, int y) { 5392 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 5393 new WebViewCore.CursorData(frame, node, x, y)); 5394 } 5395 5396 /* 5397 * Send a mouse move event to the webcore thread. 5398 * 5399 * @param removeFocus Pass true if the "mouse" cursor is now over a node 5400 * which wants key events, but it is not the focus. This 5401 * will make the visual appear as though nothing is in 5402 * focus. Remove the WebTextView, if present, and stop 5403 * drawing the blinking caret. 5404 * called by JNI 5405 */ 5406 private void sendMoveMouseIfLatest(boolean removeFocus) { 5407 if (removeFocus) { 5408 clearTextEntry(); 5409 setFocusControllerInactive(); 5410 } 5411 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 5412 cursorData()); 5413 } 5414 5415 // called by JNI 5416 private void sendMotionUp(int touchGeneration, 5417 int frame, int node, int x, int y) { 5418 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 5419 touchUpData.mMoveGeneration = touchGeneration; 5420 touchUpData.mFrame = frame; 5421 touchUpData.mNode = node; 5422 touchUpData.mX = x; 5423 touchUpData.mY = y; 5424 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 5425 } 5426 5427 5428 private int getScaledMaxXScroll() { 5429 int width; 5430 if (mHeightCanMeasure == false) { 5431 width = getViewWidth() / 4; 5432 } else { 5433 Rect visRect = new Rect(); 5434 calcOurVisibleRect(visRect); 5435 width = visRect.width() / 2; 5436 } 5437 // FIXME the divisor should be retrieved from somewhere 5438 return viewToContentX(width); 5439 } 5440 5441 private int getScaledMaxYScroll() { 5442 int height; 5443 if (mHeightCanMeasure == false) { 5444 height = getViewHeight() / 4; 5445 } else { 5446 Rect visRect = new Rect(); 5447 calcOurVisibleRect(visRect); 5448 height = visRect.height() / 2; 5449 } 5450 // FIXME the divisor should be retrieved from somewhere 5451 // the closest thing today is hard-coded into ScrollView.java 5452 // (from ScrollView.java, line 363) int maxJump = height/2; 5453 return Math.round(height * mInvActualScale); 5454 } 5455 5456 /** 5457 * Called by JNI to invalidate view 5458 */ 5459 private void viewInvalidate() { 5460 invalidate(); 5461 } 5462 5463 // return true if the key was handled 5464 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 5465 long time, boolean ignorePlugin) { 5466 if (mNativeClass == 0) { 5467 return false; 5468 } 5469 if (ignorePlugin == false && nativePluginEatsNavKey()) { 5470 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 5471 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 5472 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 5473 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 5474 , 0, 0, 0); 5475 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5476 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5477 return true; 5478 } 5479 mLastCursorTime = time; 5480 mLastCursorBounds = nativeGetCursorRingBounds(); 5481 boolean keyHandled 5482 = nativeMoveCursor(keyCode, count, noScroll) == false; 5483 if (DebugFlags.WEB_VIEW) { 5484 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 5485 + " mLastCursorTime=" + mLastCursorTime 5486 + " handled=" + keyHandled); 5487 } 5488 if (keyHandled == false || mHeightCanMeasure == false) { 5489 return keyHandled; 5490 } 5491 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 5492 if (contentCursorRingBounds.isEmpty()) return keyHandled; 5493 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 5494 Rect visRect = new Rect(); 5495 calcOurVisibleRect(visRect); 5496 Rect outset = new Rect(visRect); 5497 int maxXScroll = visRect.width() / 2; 5498 int maxYScroll = visRect.height() / 2; 5499 outset.inset(-maxXScroll, -maxYScroll); 5500 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 5501 return keyHandled; 5502 } 5503 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 5504 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 5505 maxXScroll); 5506 if (maxH > 0) { 5507 pinScrollBy(maxH, 0, true, 0); 5508 } else { 5509 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 5510 -maxXScroll); 5511 if (maxH < 0) { 5512 pinScrollBy(maxH, 0, true, 0); 5513 } 5514 } 5515 if (mLastCursorBounds.isEmpty()) return keyHandled; 5516 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 5517 return keyHandled; 5518 } 5519 if (DebugFlags.WEB_VIEW) { 5520 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 5521 + contentCursorRingBounds); 5522 } 5523 requestRectangleOnScreen(viewCursorRingBounds); 5524 mUserScroll = true; 5525 return keyHandled; 5526 } 5527 5528 /** 5529 * Set the background color. It's white by default. Pass 5530 * zero to make the view transparent. 5531 * @param color the ARGB color described by Color.java 5532 */ 5533 public void setBackgroundColor(int color) { 5534 mBackgroundColor = color; 5535 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 5536 } 5537 5538 public void debugDump() { 5539 nativeDebugDump(); 5540 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 5541 } 5542 5543 /** 5544 * Update our cache with updatedText. 5545 * @param updatedText The new text to put in our cache. 5546 */ 5547 /* package */ void updateCachedTextfield(String updatedText) { 5548 // Also place our generation number so that when we look at the cache 5549 // we recognize that it is up to date. 5550 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 5551 } 5552 5553 /* package */ native void nativeClearCursor(); 5554 private native void nativeCreate(int ptr); 5555 private native int nativeCursorFramePointer(); 5556 private native Rect nativeCursorNodeBounds(); 5557 /* package */ native int nativeCursorNodePointer(); 5558 /* package */ native boolean nativeCursorMatchesFocus(); 5559 private native boolean nativeCursorIntersects(Rect visibleRect); 5560 private native boolean nativeCursorIsAnchor(); 5561 private native boolean nativeCursorIsPlugin(); 5562 private native boolean nativeCursorIsTextInput(); 5563 private native Point nativeCursorPosition(); 5564 private native String nativeCursorText(); 5565 /** 5566 * Returns true if the native cursor node says it wants to handle key events 5567 * (ala plugins). This can only be called if mNativeClass is non-zero! 5568 */ 5569 private native boolean nativeCursorWantsKeyEvents(); 5570 private native void nativeDebugDump(); 5571 private native void nativeDestroy(); 5572 private native void nativeDrawCursorRing(Canvas content); 5573 private native void nativeDrawMatches(Canvas canvas); 5574 private native void nativeDrawSelection(Canvas content 5575 , int x, int y, boolean extendSelection); 5576 private native void nativeDrawSelectionRegion(Canvas content); 5577 private native void nativeDumpDisplayTree(String urlOrNull); 5578 private native int nativeFindAll(String findLower, String findUpper); 5579 private native void nativeFindNext(boolean forward); 5580 private native boolean nativeFocusCandidateIsPassword(); 5581 private native boolean nativeFocusCandidateIsRtlText(); 5582 private native boolean nativeFocusCandidateIsTextField(); 5583 private native boolean nativeFocusCandidateIsTextInput(); 5584 private native int nativeFocusCandidateMaxLength(); 5585 /* package */ native String nativeFocusCandidateName(); 5586 private native Rect nativeFocusCandidateNodeBounds(); 5587 /* package */ native int nativeFocusCandidatePointer(); 5588 private native String nativeFocusCandidateText(); 5589 private native int nativeFocusCandidateTextSize(); 5590 /* package */ native int nativeFocusNodePointer(); 5591 private native Rect nativeGetCursorRingBounds(); 5592 private native Region nativeGetSelection(); 5593 private native boolean nativeHasCursorNode(); 5594 private native boolean nativeHasFocusNode(); 5595 private native void nativeHideCursor(); 5596 private native String nativeImageURI(int x, int y); 5597 private native void nativeInstrumentReport(); 5598 /* package */ native void nativeMoveCursorToNextTextInput(); 5599 // return true if the page has been scrolled 5600 private native boolean nativeMotionUp(int x, int y, int slop); 5601 // returns false if it handled the key 5602 private native boolean nativeMoveCursor(int keyCode, int count, 5603 boolean noScroll); 5604 private native int nativeMoveGeneration(); 5605 private native void nativeMoveSelection(int x, int y, 5606 boolean extendSelection); 5607 private native boolean nativePluginEatsNavKey(); 5608 // Like many other of our native methods, you must make sure that 5609 // mNativeClass is not null before calling this method. 5610 private native void nativeRecordButtons(boolean focused, 5611 boolean pressed, boolean invalidate); 5612 private native void nativeSelectBestAt(Rect rect); 5613 private native void nativeSetFindIsDown(); 5614 private native void nativeSetFollowedLink(boolean followed); 5615 private native void nativeSetHeightCanMeasure(boolean measure); 5616 // Returns a value corresponding to CachedFrame::ImeAction 5617 /* package */ native int nativeTextFieldAction(); 5618 /** 5619 * Perform a click on a currently focused text input. Since it is already 5620 * focused, there is no need to go through the nativeMotionUp code, which 5621 * may change the Cursor. 5622 */ 5623 private native void nativeTextInputMotionUp(int x, int y); 5624 private native int nativeTextGeneration(); 5625 // Never call this version except by updateCachedTextfield(String) - 5626 // we always want to pass in our generation number. 5627 private native void nativeUpdateCachedTextfield(String updatedText, 5628 int generation); 5629 private native void nativeUpdatePluginReceivesEvents(); 5630 // return NO_LEFTEDGE means failure. 5631 private static final int NO_LEFTEDGE = -1; 5632 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 5633} 5634