WebView.java revision 39e6773431e6010c5066c0e13facfd943c932c7e
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 if (null == item) { 1115 // FIXME: this shouldn't happen 1116 // need to determine how item got set to null 1117 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1118 return null; 1119 } 1120 byte[] data = item.getFlattenedData(); 1121 if (data == null) { 1122 // It would be very odd to not have any data for a given history 1123 // item. And we will fail to rebuild the history list without 1124 // flattened data. 1125 return null; 1126 } 1127 history.add(data); 1128 } 1129 outState.putSerializable("history", history); 1130 if (mCertificate != null) { 1131 outState.putBundle("certificate", 1132 SslCertificate.saveState(mCertificate)); 1133 } 1134 return list; 1135 } 1136 1137 /** 1138 * Save the current display data to the Bundle given. Used in conjunction 1139 * with {@link #saveState}. 1140 * @param b A Bundle to store the display data. 1141 * @param dest The file to store the serialized picture data. Will be 1142 * overwritten with this WebView's picture data. 1143 * @return True if the picture was successfully saved. 1144 */ 1145 public boolean savePicture(Bundle b, File dest) { 1146 if (dest == null || b == null) { 1147 return false; 1148 } 1149 final Picture p = capturePicture(); 1150 try { 1151 final FileOutputStream out = new FileOutputStream(dest); 1152 p.writeToStream(out); 1153 out.close(); 1154 } catch (FileNotFoundException e){ 1155 e.printStackTrace(); 1156 } catch (IOException e) { 1157 e.printStackTrace(); 1158 } catch (RuntimeException e) { 1159 e.printStackTrace(); 1160 } 1161 if (dest.length() > 0) { 1162 b.putInt("scrollX", mScrollX); 1163 b.putInt("scrollY", mScrollY); 1164 b.putFloat("scale", mActualScale); 1165 if (mInZoomOverview) { 1166 b.putFloat("lastScale", mLastScale); 1167 } 1168 return true; 1169 } 1170 return false; 1171 } 1172 1173 /** 1174 * Restore the display data that was save in {@link #savePicture}. Used in 1175 * conjunction with {@link #restoreState}. 1176 * @param b A Bundle containing the saved display data. 1177 * @param src The file where the picture data was stored. 1178 * @return True if the picture was successfully restored. 1179 */ 1180 public boolean restorePicture(Bundle b, File src) { 1181 if (src == null || b == null) { 1182 return false; 1183 } 1184 if (src.exists()) { 1185 Picture p = null; 1186 try { 1187 final FileInputStream in = new FileInputStream(src); 1188 p = Picture.createFromStream(in); 1189 in.close(); 1190 } catch (FileNotFoundException e){ 1191 e.printStackTrace(); 1192 } catch (RuntimeException e) { 1193 e.printStackTrace(); 1194 } catch (IOException e) { 1195 e.printStackTrace(); 1196 } 1197 if (p != null) { 1198 int sx = b.getInt("scrollX", 0); 1199 int sy = b.getInt("scrollY", 0); 1200 float scale = b.getFloat("scale", 1.0f); 1201 mDrawHistory = true; 1202 mHistoryPicture = p; 1203 mScrollX = sx; 1204 mScrollY = sy; 1205 mHistoryWidth = Math.round(p.getWidth() * scale); 1206 mHistoryHeight = Math.round(p.getHeight() * scale); 1207 // as getWidth() / getHeight() of the view are not 1208 // available yet, set up mActualScale, so that when 1209 // onSizeChanged() is called, the rest will be set 1210 // correctly 1211 mActualScale = scale; 1212 float lastScale = b.getFloat("lastScale", -1.0f); 1213 if (lastScale > 0) { 1214 mInZoomOverview = true; 1215 mLastScale = lastScale; 1216 } else { 1217 mInZoomOverview = false; 1218 } 1219 invalidate(); 1220 return true; 1221 } 1222 } 1223 return false; 1224 } 1225 1226 /** 1227 * Restore the state of this WebView from the given map used in 1228 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1229 * be called to restore the state of the WebView before using the object. If 1230 * it is called after the WebView has had a chance to build state (load 1231 * pages, create a back/forward list, etc.) there may be undesirable 1232 * side-effects. Please note that this method no longer restores the 1233 * display data for this WebView. See {@link #savePicture} and {@link 1234 * #restorePicture} for saving and restoring the display data. 1235 * @param inState The incoming Bundle of state. 1236 * @return The restored back/forward list or null if restoreState failed. 1237 * @see #savePicture 1238 * @see #restorePicture 1239 */ 1240 public WebBackForwardList restoreState(Bundle inState) { 1241 WebBackForwardList returnList = null; 1242 if (inState == null) { 1243 return returnList; 1244 } 1245 if (inState.containsKey("index") && inState.containsKey("history")) { 1246 mCertificate = SslCertificate.restoreState( 1247 inState.getBundle("certificate")); 1248 1249 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1250 final int index = inState.getInt("index"); 1251 // We can't use a clone of the list because we need to modify the 1252 // shared copy, so synchronize instead to prevent concurrent 1253 // modifications. 1254 synchronized (list) { 1255 final List<byte[]> history = 1256 (List<byte[]>) inState.getSerializable("history"); 1257 final int size = history.size(); 1258 // Check the index bounds so we don't crash in native code while 1259 // restoring the history index. 1260 if (index < 0 || index >= size) { 1261 return null; 1262 } 1263 for (int i = 0; i < size; i++) { 1264 byte[] data = history.remove(0); 1265 if (data == null) { 1266 // If we somehow have null data, we cannot reconstruct 1267 // the item and thus our history list cannot be rebuilt. 1268 return null; 1269 } 1270 WebHistoryItem item = new WebHistoryItem(data); 1271 list.addHistoryItem(item); 1272 } 1273 // Grab the most recent copy to return to the caller. 1274 returnList = copyBackForwardList(); 1275 // Update the copy to have the correct index. 1276 returnList.setCurrentIndex(index); 1277 } 1278 // Remove all pending messages because we are restoring previous 1279 // state. 1280 mWebViewCore.removeMessages(); 1281 // Send a restore state message. 1282 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1283 } 1284 return returnList; 1285 } 1286 1287 /** 1288 * Load the given url. 1289 * @param url The url of the resource to load. 1290 */ 1291 public void loadUrl(String url) { 1292 if (url == null) { 1293 return; 1294 } 1295 switchOutDrawHistory(); 1296 mWebViewCore.sendMessage(EventHub.LOAD_URL, url); 1297 clearTextEntry(); 1298 } 1299 1300 /** 1301 * Load the url with postData using "POST" method into the WebView. If url 1302 * is not a network url, it will be loaded with {link 1303 * {@link #loadUrl(String)} instead. 1304 * 1305 * @param url The url of the resource to load. 1306 * @param postData The data will be passed to "POST" request. 1307 */ 1308 public void postUrl(String url, byte[] postData) { 1309 if (URLUtil.isNetworkUrl(url)) { 1310 switchOutDrawHistory(); 1311 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1312 arg.mUrl = url; 1313 arg.mPostData = postData; 1314 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1315 clearTextEntry(); 1316 } else { 1317 loadUrl(url); 1318 } 1319 } 1320 1321 /** 1322 * Load the given data into the WebView. This will load the data into 1323 * WebView using the data: scheme. Content loaded through this mechanism 1324 * does not have the ability to load content from the network. 1325 * @param data A String of data in the given encoding. 1326 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1327 * @param encoding The encoding of the data. i.e. utf-8, base64 1328 */ 1329 public void loadData(String data, String mimeType, String encoding) { 1330 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1331 } 1332 1333 /** 1334 * Load the given data into the WebView, use the provided URL as the base 1335 * URL for the content. The base URL is the URL that represents the page 1336 * that is loaded through this interface. As such, it is used for the 1337 * history entry and to resolve any relative URLs. The failUrl is used if 1338 * browser fails to load the data provided. If it is empty or null, and the 1339 * load fails, then no history entry is created. 1340 * <p> 1341 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1342 * files through "file:///android_asset/" for the sub resources is more 1343 * restricted. If you provide null or empty string as baseUrl, you won't be 1344 * able to access asset files. If the baseUrl is anything other than 1345 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1346 * sub resources. 1347 * 1348 * @param baseUrl Url to resolve relative paths with, if null defaults to 1349 * "about:blank" 1350 * @param data A String of data in the given encoding. 1351 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1352 * defaults to "text/html" 1353 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1354 * @param failUrl URL to use if the content fails to load or null. 1355 */ 1356 public void loadDataWithBaseURL(String baseUrl, String data, 1357 String mimeType, String encoding, String failUrl) { 1358 1359 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1360 loadData(data, mimeType, encoding); 1361 return; 1362 } 1363 switchOutDrawHistory(); 1364 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1365 arg.mBaseUrl = baseUrl; 1366 arg.mData = data; 1367 arg.mMimeType = mimeType; 1368 arg.mEncoding = encoding; 1369 arg.mFailUrl = failUrl; 1370 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1371 clearTextEntry(); 1372 } 1373 1374 /** 1375 * Stop the current load. 1376 */ 1377 public void stopLoading() { 1378 // TODO: should we clear all the messages in the queue before sending 1379 // STOP_LOADING? 1380 switchOutDrawHistory(); 1381 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1382 } 1383 1384 /** 1385 * Reload the current url. 1386 */ 1387 public void reload() { 1388 clearTextEntry(); 1389 switchOutDrawHistory(); 1390 mWebViewCore.sendMessage(EventHub.RELOAD); 1391 } 1392 1393 /** 1394 * Return true if this WebView has a back history item. 1395 * @return True iff this WebView has a back history item. 1396 */ 1397 public boolean canGoBack() { 1398 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1399 synchronized (l) { 1400 if (l.getClearPending()) { 1401 return false; 1402 } else { 1403 return l.getCurrentIndex() > 0; 1404 } 1405 } 1406 } 1407 1408 /** 1409 * Go back in the history of this WebView. 1410 */ 1411 public void goBack() { 1412 goBackOrForward(-1); 1413 } 1414 1415 /** 1416 * Return true if this WebView has a forward history item. 1417 * @return True iff this Webview has a forward history item. 1418 */ 1419 public boolean canGoForward() { 1420 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1421 synchronized (l) { 1422 if (l.getClearPending()) { 1423 return false; 1424 } else { 1425 return l.getCurrentIndex() < l.getSize() - 1; 1426 } 1427 } 1428 } 1429 1430 /** 1431 * Go forward in the history of this WebView. 1432 */ 1433 public void goForward() { 1434 goBackOrForward(1); 1435 } 1436 1437 /** 1438 * Return true if the page can go back or forward the given 1439 * number of steps. 1440 * @param steps The negative or positive number of steps to move the 1441 * history. 1442 */ 1443 public boolean canGoBackOrForward(int steps) { 1444 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1445 synchronized (l) { 1446 if (l.getClearPending()) { 1447 return false; 1448 } else { 1449 int newIndex = l.getCurrentIndex() + steps; 1450 return newIndex >= 0 && newIndex < l.getSize(); 1451 } 1452 } 1453 } 1454 1455 /** 1456 * Go to the history item that is the number of steps away from 1457 * the current item. Steps is negative if backward and positive 1458 * if forward. 1459 * @param steps The number of steps to take back or forward in the back 1460 * forward list. 1461 */ 1462 public void goBackOrForward(int steps) { 1463 goBackOrForward(steps, false); 1464 } 1465 1466 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1467 // every time we go back or forward, we want to reset the 1468 // WebView certificate: 1469 // if the new site is secure, we will reload it and get a 1470 // new certificate set; 1471 // if the new site is not secure, the certificate must be 1472 // null, and that will be the case 1473 mCertificate = null; 1474 if (steps != 0) { 1475 clearTextEntry(); 1476 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1477 ignoreSnapshot ? 1 : 0); 1478 } 1479 } 1480 1481 private boolean extendScroll(int y) { 1482 int finalY = mScroller.getFinalY(); 1483 int newY = pinLocY(finalY + y); 1484 if (newY == finalY) return false; 1485 mScroller.setFinalY(newY); 1486 mScroller.extendDuration(computeDuration(0, y)); 1487 return true; 1488 } 1489 1490 /** 1491 * Scroll the contents of the view up by half the view size 1492 * @param top true to jump to the top of the page 1493 * @return true if the page was scrolled 1494 */ 1495 public boolean pageUp(boolean top) { 1496 if (mNativeClass == 0) { 1497 return false; 1498 } 1499 nativeClearCursor(); // start next trackball movement from page edge 1500 if (top) { 1501 // go to the top of the document 1502 return pinScrollTo(mScrollX, 0, true, 0); 1503 } 1504 // Page up 1505 int h = getHeight(); 1506 int y; 1507 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1508 y = -h + PAGE_SCROLL_OVERLAP; 1509 } else { 1510 y = -h / 2; 1511 } 1512 mUserScroll = true; 1513 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1514 : extendScroll(y); 1515 } 1516 1517 /** 1518 * Scroll the contents of the view down by half the page size 1519 * @param bottom true to jump to bottom of page 1520 * @return true if the page was scrolled 1521 */ 1522 public boolean pageDown(boolean bottom) { 1523 if (mNativeClass == 0) { 1524 return false; 1525 } 1526 nativeClearCursor(); // start next trackball movement from page edge 1527 if (bottom) { 1528 return pinScrollTo(mScrollX, mContentHeight, true, 0); 1529 } 1530 // Page down. 1531 int h = getHeight(); 1532 int y; 1533 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1534 y = h - PAGE_SCROLL_OVERLAP; 1535 } else { 1536 y = h / 2; 1537 } 1538 mUserScroll = true; 1539 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1540 : extendScroll(y); 1541 } 1542 1543 /** 1544 * Clear the view so that onDraw() will draw nothing but white background, 1545 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1546 */ 1547 public void clearView() { 1548 mContentWidth = 0; 1549 mContentHeight = 0; 1550 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1551 } 1552 1553 /** 1554 * Return a new picture that captures the current display of the webview. 1555 * This is a copy of the display, and will be unaffected if the webview 1556 * later loads a different URL. 1557 * 1558 * @return a picture containing the current contents of the view. Note this 1559 * picture is of the entire document, and is not restricted to the 1560 * bounds of the view. 1561 */ 1562 public Picture capturePicture() { 1563 if (null == mWebViewCore) return null; // check for out of memory tab 1564 return mWebViewCore.copyContentPicture(); 1565 } 1566 1567 /** 1568 * Return true if the browser is displaying a TextView for text input. 1569 */ 1570 private boolean inEditingMode() { 1571 return mWebTextView != null && mWebTextView.getParent() != null 1572 && mWebTextView.hasFocus(); 1573 } 1574 1575 private void clearTextEntry() { 1576 if (inEditingMode()) { 1577 mWebTextView.remove(); 1578 } 1579 } 1580 1581 /** 1582 * Return the current scale of the WebView 1583 * @return The current scale. 1584 */ 1585 public float getScale() { 1586 return mActualScale; 1587 } 1588 1589 /** 1590 * Set the initial scale for the WebView. 0 means default. If 1591 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1592 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1593 * WebView starts will this value as initial scale. 1594 * 1595 * @param scaleInPercent The initial scale in percent. 1596 */ 1597 public void setInitialScale(int scaleInPercent) { 1598 mInitialScale = scaleInPercent; 1599 } 1600 1601 /** 1602 * Invoke the graphical zoom picker widget for this WebView. This will 1603 * result in the zoom widget appearing on the screen to control the zoom 1604 * level of this WebView. 1605 */ 1606 public void invokeZoomPicker() { 1607 if (!getSettings().supportZoom()) { 1608 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1609 return; 1610 } 1611 clearTextEntry(); 1612 if (getSettings().getBuiltInZoomControls()) { 1613 mZoomButtonsController.setVisible(true); 1614 } else { 1615 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1616 mPrivateHandler.postDelayed(mZoomControlRunnable, 1617 ZOOM_CONTROLS_TIMEOUT); 1618 } 1619 } 1620 1621 /** 1622 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1623 * is found and the anchor has a non-javascript url, the HitTestResult type 1624 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1625 * anchor does not have a url or if it is a javascript url, the type will 1626 * be UNKNOWN_TYPE and the url has to be retrieved through 1627 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1628 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1629 * the "extra" field. A type of 1630 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1631 * a child node. If a phone number is found, the HitTestResult type is set 1632 * to PHONE_TYPE and the phone number is set in the "extra" field of 1633 * HitTestResult. If a map address is found, the HitTestResult type is set 1634 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1635 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1636 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1637 * HitTestResult type is set to UNKNOWN_TYPE. 1638 */ 1639 public HitTestResult getHitTestResult() { 1640 if (mNativeClass == 0) { 1641 return null; 1642 } 1643 1644 HitTestResult result = new HitTestResult(); 1645 if (nativeHasCursorNode()) { 1646 if (nativeCursorIsTextInput()) { 1647 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1648 } else { 1649 String text = nativeCursorText(); 1650 if (text != null) { 1651 if (text.startsWith(SCHEME_TEL)) { 1652 result.setType(HitTestResult.PHONE_TYPE); 1653 result.setExtra(text.substring(SCHEME_TEL.length())); 1654 } else if (text.startsWith(SCHEME_MAILTO)) { 1655 result.setType(HitTestResult.EMAIL_TYPE); 1656 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1657 } else if (text.startsWith(SCHEME_GEO)) { 1658 result.setType(HitTestResult.GEO_TYPE); 1659 result.setExtra(URLDecoder.decode(text 1660 .substring(SCHEME_GEO.length()))); 1661 } else if (nativeCursorIsAnchor()) { 1662 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1663 result.setExtra(text); 1664 } 1665 } 1666 } 1667 } 1668 int type = result.getType(); 1669 if (type == HitTestResult.UNKNOWN_TYPE 1670 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1671 // Now check to see if it is an image. 1672 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1673 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1674 String text = nativeImageURI(contentX, contentY); 1675 if (text != null) { 1676 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1677 HitTestResult.IMAGE_TYPE : 1678 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1679 result.setExtra(text); 1680 } 1681 } 1682 return result; 1683 } 1684 1685 /** 1686 * Request the href of an anchor element due to getFocusNodePath returning 1687 * "href." If hrefMsg is null, this method returns immediately and does not 1688 * dispatch hrefMsg to its target. 1689 * 1690 * @param hrefMsg This message will be dispatched with the result of the 1691 * request as the data member with "url" as key. The result can 1692 * be null. 1693 */ 1694 // FIXME: API change required to change the name of this function. We now 1695 // look at the cursor node, and not the focus node. Also, what is 1696 // getFocusNodePath? 1697 public void requestFocusNodeHref(Message hrefMsg) { 1698 if (hrefMsg == null || mNativeClass == 0) { 1699 return; 1700 } 1701 if (nativeCursorIsAnchor()) { 1702 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1703 nativeCursorFramePointer(), nativeCursorNodePointer(), 1704 hrefMsg); 1705 } 1706 } 1707 1708 /** 1709 * Request the url of the image last touched by the user. msg will be sent 1710 * to its target with a String representing the url as its object. 1711 * 1712 * @param msg This message will be dispatched with the result of the request 1713 * as the data member with "url" as key. The result can be null. 1714 */ 1715 public void requestImageRef(Message msg) { 1716 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1717 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1718 String ref = nativeImageURI(contentX, contentY); 1719 Bundle data = msg.getData(); 1720 data.putString("url", ref); 1721 msg.setData(data); 1722 msg.sendToTarget(); 1723 } 1724 1725 private static int pinLoc(int x, int viewMax, int docMax) { 1726// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1727 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1728 // pin the short document to the top/left of the screen 1729 x = 0; 1730// Log.d(LOGTAG, "--- center " + x); 1731 } else if (x < 0) { 1732 x = 0; 1733// Log.d(LOGTAG, "--- zero"); 1734 } else if (x + viewMax > docMax) { 1735 x = docMax - viewMax; 1736// Log.d(LOGTAG, "--- pin " + x); 1737 } 1738 return x; 1739 } 1740 1741 // Expects x in view coordinates 1742 private int pinLocX(int x) { 1743 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1744 } 1745 1746 // Expects y in view coordinates 1747 private int pinLocY(int y) { 1748 int titleH = getTitleHeight(); 1749 // if the titlebar is still visible, just pin against 0 1750 if (y <= titleH) { 1751 return Math.max(y, 0); 1752 } 1753 // convert to 0-based coordinate (subtract the title height) 1754 // pin(), and then add the title height back in 1755 return pinLoc(y - titleH, getViewHeight(), 1756 computeVerticalScrollRange()) + titleH; 1757 } 1758 1759 /** 1760 * A title bar which is embedded in this WebView, and scrolls along with it 1761 * vertically, but not horizontally. 1762 */ 1763 private View mTitleBar; 1764 1765 /** 1766 * Since we draw the title bar ourselves, we removed the shadow from the 1767 * browser's activity. We do want a shadow at the bottom of the title bar, 1768 * or at the top of the screen if the title bar is not visible. This 1769 * drawable serves that purpose. 1770 */ 1771 private Drawable mTitleShadow; 1772 1773 /** 1774 * Add or remove a title bar to be embedded into the WebView, and scroll 1775 * along with it vertically, while remaining in view horizontally. Pass 1776 * null to remove the title bar from the WebView, and return to drawing 1777 * the WebView normally without translating to account for the title bar. 1778 * @hide 1779 */ 1780 public void setEmbeddedTitleBar(View v) { 1781 if (mTitleBar == v) return; 1782 if (mTitleBar != null) { 1783 removeView(mTitleBar); 1784 } 1785 if (null != v) { 1786 addView(v, new AbsoluteLayout.LayoutParams( 1787 ViewGroup.LayoutParams.FILL_PARENT, 1788 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1789 if (mTitleShadow == null) { 1790 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1791 com.android.internal.R.drawable.title_bar_shadow); 1792 } 1793 } 1794 mTitleBar = v; 1795 } 1796 1797 /** 1798 * Given a distance in view space, convert it to content space. Note: this 1799 * does not reflect translation, just scaling, so this should not be called 1800 * with coordinates, but should be called for dimensions like width or 1801 * height. 1802 */ 1803 private int viewToContentDimension(int d) { 1804 return Math.round(d * mInvActualScale); 1805 } 1806 1807 /** 1808 * Given an x coordinate in view space, convert it to content space. Also 1809 * may be used for absolute heights (such as for the WebTextView's 1810 * textSize, which is unaffected by the height of the title bar). 1811 */ 1812 /*package*/ int viewToContentX(int x) { 1813 return viewToContentDimension(x); 1814 } 1815 1816 /** 1817 * Given a y coordinate in view space, convert it to content space. 1818 * Takes into account the height of the title bar if there is one 1819 * embedded into the WebView. 1820 */ 1821 /*package*/ int viewToContentY(int y) { 1822 return viewToContentDimension(y - getTitleHeight()); 1823 } 1824 1825 /** 1826 * Given a distance in content space, convert it to view space. Note: this 1827 * does not reflect translation, just scaling, so this should not be called 1828 * with coordinates, but should be called for dimensions like width or 1829 * height. 1830 */ 1831 /*package*/ int contentToViewDimension(int d) { 1832 return Math.round(d * mActualScale); 1833 } 1834 1835 /** 1836 * Given an x coordinate in content space, convert it to view 1837 * space. 1838 */ 1839 /*package*/ int contentToViewX(int x) { 1840 return contentToViewDimension(x); 1841 } 1842 1843 /** 1844 * Given a y coordinate in content space, convert it to view 1845 * space. Takes into account the height of the title bar. 1846 */ 1847 /*package*/ int contentToViewY(int y) { 1848 return contentToViewDimension(y) + getTitleHeight(); 1849 } 1850 1851 private Rect contentToViewRect(Rect x) { 1852 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 1853 contentToViewX(x.right), contentToViewY(x.bottom)); 1854 } 1855 1856 /* To invalidate a rectangle in content coordinates, we need to transform 1857 the rect into view coordinates, so we can then call invalidate(...). 1858 1859 Normally, we would just call contentToView[XY](...), which eventually 1860 calls Math.round(coordinate * mActualScale). However, for invalidates, 1861 we need to account for the slop that occurs with antialiasing. To 1862 address that, we are a little more liberal in the size of the rect that 1863 we invalidate. 1864 1865 This liberal calculation calls floor() for the top/left, and ceil() for 1866 the bottom/right coordinates. This catches the possible extra pixels of 1867 antialiasing that we might have missed with just round(). 1868 */ 1869 1870 // Called by JNI to invalidate the View, given rectangle coordinates in 1871 // content space 1872 private void viewInvalidate(int l, int t, int r, int b) { 1873 final float scale = mActualScale; 1874 final int dy = getTitleHeight(); 1875 invalidate((int)Math.floor(l * scale), 1876 (int)Math.floor(t * scale) + dy, 1877 (int)Math.ceil(r * scale), 1878 (int)Math.ceil(b * scale) + dy); 1879 } 1880 1881 // Called by JNI to invalidate the View after a delay, given rectangle 1882 // coordinates in content space 1883 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 1884 final float scale = mActualScale; 1885 final int dy = getTitleHeight(); 1886 postInvalidateDelayed(delay, 1887 (int)Math.floor(l * scale), 1888 (int)Math.floor(t * scale) + dy, 1889 (int)Math.ceil(r * scale), 1890 (int)Math.ceil(b * scale) + dy); 1891 } 1892 1893 private void invalidateContentRect(Rect r) { 1894 viewInvalidate(r.left, r.top, r.right, r.bottom); 1895 } 1896 1897 // stop the scroll animation, and don't let a subsequent fling add 1898 // to the existing velocity 1899 private void abortAnimation() { 1900 mScroller.abortAnimation(); 1901 mLastVelocity = 0; 1902 } 1903 1904 /* call from webcoreview.draw(), so we're still executing in the UI thread 1905 */ 1906 private void recordNewContentSize(int w, int h, boolean updateLayout) { 1907 1908 // premature data from webkit, ignore 1909 if ((w | h) == 0) { 1910 return; 1911 } 1912 1913 // don't abort a scroll animation if we didn't change anything 1914 if (mContentWidth != w || mContentHeight != h) { 1915 // record new dimensions 1916 mContentWidth = w; 1917 mContentHeight = h; 1918 // If history Picture is drawn, don't update scroll. They will be 1919 // updated when we get out of that mode. 1920 if (!mDrawHistory) { 1921 // repin our scroll, taking into account the new content size 1922 int oldX = mScrollX; 1923 int oldY = mScrollY; 1924 mScrollX = pinLocX(mScrollX); 1925 mScrollY = pinLocY(mScrollY); 1926 if (oldX != mScrollX || oldY != mScrollY) { 1927 sendOurVisibleRect(); 1928 } 1929 if (!mScroller.isFinished()) { 1930 // We are in the middle of a scroll. Repin the final scroll 1931 // position. 1932 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 1933 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 1934 } 1935 } 1936 } 1937 contentSizeChanged(updateLayout); 1938 } 1939 1940 private void setNewZoomScale(float scale, boolean force) { 1941 if (scale < mMinZoomScale) { 1942 scale = mMinZoomScale; 1943 } else if (scale > mMaxZoomScale) { 1944 scale = mMaxZoomScale; 1945 } 1946 if (scale != mActualScale || force) { 1947 if (mDrawHistory) { 1948 // If history Picture is drawn, don't update scroll. They will 1949 // be updated when we get out of that mode. 1950 if (scale != mActualScale && !mPreviewZoomOnly) { 1951 mCallbackProxy.onScaleChanged(mActualScale, scale); 1952 } 1953 mActualScale = scale; 1954 mInvActualScale = 1 / scale; 1955 if (!mPreviewZoomOnly) { 1956 sendViewSizeZoom(); 1957 } 1958 } else { 1959 // update our scroll so we don't appear to jump 1960 // i.e. keep the center of the doc in the center of the view 1961 1962 int oldX = mScrollX; 1963 int oldY = mScrollY; 1964 float ratio = scale * mInvActualScale; // old inverse 1965 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 1966 float sy = ratio * oldY + (ratio - 1) 1967 * (mZoomCenterY - getTitleHeight()); 1968 1969 // now update our new scale and inverse 1970 if (scale != mActualScale && !mPreviewZoomOnly) { 1971 mCallbackProxy.onScaleChanged(mActualScale, scale); 1972 } 1973 mActualScale = scale; 1974 mInvActualScale = 1 / scale; 1975 1976 // Scale all the child views 1977 mViewManager.scaleAll(); 1978 1979 // as we don't have animation for scaling, don't do animation 1980 // for scrolling, as it causes weird intermediate state 1981 // pinScrollTo(Math.round(sx), Math.round(sy)); 1982 mScrollX = pinLocX(Math.round(sx)); 1983 mScrollY = pinLocY(Math.round(sy)); 1984 1985 if (!mPreviewZoomOnly) { 1986 sendViewSizeZoom(); 1987 sendOurVisibleRect(); 1988 } 1989 } 1990 } 1991 } 1992 1993 // Used to avoid sending many visible rect messages. 1994 private Rect mLastVisibleRectSent; 1995 private Rect mLastGlobalRect; 1996 1997 private Rect sendOurVisibleRect() { 1998 Rect rect = new Rect(); 1999 calcOurContentVisibleRect(rect); 2000 // Rect.equals() checks for null input. 2001 if (!rect.equals(mLastVisibleRectSent)) { 2002 Point pos = new Point(rect.left, rect.top); 2003 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2004 nativeMoveGeneration(), 0, pos); 2005 mLastVisibleRectSent = rect; 2006 } 2007 Rect globalRect = new Rect(); 2008 if (getGlobalVisibleRect(globalRect) 2009 && !globalRect.equals(mLastGlobalRect)) { 2010 if (DebugFlags.WEB_VIEW) { 2011 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2012 + globalRect.top + ",r=" + globalRect.right + ",b=" 2013 + globalRect.bottom); 2014 } 2015 // TODO: the global offset is only used by windowRect() 2016 // in ChromeClientAndroid ; other clients such as touch 2017 // and mouse events could return view + screen relative points. 2018 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2019 mLastGlobalRect = globalRect; 2020 } 2021 return rect; 2022 } 2023 2024 // Sets r to be the visible rectangle of our webview in view coordinates 2025 private void calcOurVisibleRect(Rect r) { 2026 Point p = new Point(); 2027 getGlobalVisibleRect(r, p); 2028 r.offset(-p.x, -p.y); 2029 if (mFindIsUp) { 2030 r.bottom -= mFindHeight; 2031 } 2032 } 2033 2034 // Sets r to be our visible rectangle in content coordinates 2035 private void calcOurContentVisibleRect(Rect r) { 2036 calcOurVisibleRect(r); 2037 r.left = viewToContentX(r.left); 2038 // viewToContentY will remove the total height of the title bar. Add 2039 // the visible height back in to account for the fact that if the title 2040 // bar is partially visible, the part of the visible rect which is 2041 // displaying our content is displaced by that amount. 2042 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2043 r.right = viewToContentX(r.right); 2044 r.bottom = viewToContentY(r.bottom); 2045 } 2046 2047 static class ViewSizeData { 2048 int mWidth; 2049 int mHeight; 2050 int mTextWrapWidth; 2051 float mScale; 2052 boolean mIgnoreHeight; 2053 } 2054 2055 /** 2056 * Compute unzoomed width and height, and if they differ from the last 2057 * values we sent, send them to webkit (to be used has new viewport) 2058 * 2059 * @return true if new values were sent 2060 */ 2061 private boolean sendViewSizeZoom() { 2062 int viewWidth = getViewWidth(); 2063 int newWidth = Math.round(viewWidth * mInvActualScale); 2064 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2065 /* 2066 * Because the native side may have already done a layout before the 2067 * View system was able to measure us, we have to send a height of 0 to 2068 * remove excess whitespace when we grow our width. This will trigger a 2069 * layout and a change in content size. This content size change will 2070 * mean that contentSizeChanged will either call this method directly or 2071 * indirectly from onSizeChanged. 2072 */ 2073 if (newWidth > mLastWidthSent && mWrapContent) { 2074 newHeight = 0; 2075 } 2076 // Avoid sending another message if the dimensions have not changed. 2077 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2078 ViewSizeData data = new ViewSizeData(); 2079 data.mWidth = newWidth; 2080 data.mHeight = newHeight; 2081 // while in zoom overview mode, the text are wrapped to the screen 2082 // width matching mLastScale. So that we don't trigger re-flow while 2083 // toggling between overview mode and normal mode. 2084 data.mTextWrapWidth = mInZoomOverview ? Math.round(viewWidth 2085 / mLastScale) : newWidth; 2086 data.mScale = mActualScale; 2087 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2088 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2089 mLastWidthSent = newWidth; 2090 mLastHeightSent = newHeight; 2091 return true; 2092 } 2093 return false; 2094 } 2095 2096 @Override 2097 protected int computeHorizontalScrollRange() { 2098 if (mDrawHistory) { 2099 return mHistoryWidth; 2100 } else { 2101 // to avoid rounding error caused unnecessary scrollbar, use floor 2102 return (int) Math.floor(mContentWidth * mActualScale); 2103 } 2104 } 2105 2106 @Override 2107 protected int computeVerticalScrollRange() { 2108 if (mDrawHistory) { 2109 return mHistoryHeight; 2110 } else { 2111 // to avoid rounding error caused unnecessary scrollbar, use floor 2112 return (int) Math.floor(mContentHeight * mActualScale); 2113 } 2114 } 2115 2116 @Override 2117 protected int computeVerticalScrollOffset() { 2118 return Math.max(mScrollY - getTitleHeight(), 0); 2119 } 2120 2121 @Override 2122 protected int computeVerticalScrollExtent() { 2123 return getViewHeight(); 2124 } 2125 2126 /** @hide */ 2127 @Override 2128 protected void onDrawVerticalScrollBar(Canvas canvas, 2129 Drawable scrollBar, 2130 int l, int t, int r, int b) { 2131 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2132 scrollBar.draw(canvas); 2133 } 2134 2135 /** 2136 * Get the url for the current page. This is not always the same as the url 2137 * passed to WebViewClient.onPageStarted because although the load for 2138 * that url has begun, the current page may not have changed. 2139 * @return The url for the current page. 2140 */ 2141 public String getUrl() { 2142 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2143 return h != null ? h.getUrl() : null; 2144 } 2145 2146 /** 2147 * Get the original url for the current page. This is not always the same 2148 * as the url passed to WebViewClient.onPageStarted because although the 2149 * load for that url has begun, the current page may not have changed. 2150 * Also, there may have been redirects resulting in a different url to that 2151 * originally requested. 2152 * @return The url that was originally requested for the current page. 2153 */ 2154 public String getOriginalUrl() { 2155 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2156 return h != null ? h.getOriginalUrl() : null; 2157 } 2158 2159 /** 2160 * Get the title for the current page. This is the title of the current page 2161 * until WebViewClient.onReceivedTitle is called. 2162 * @return The title for the current page. 2163 */ 2164 public String getTitle() { 2165 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2166 return h != null ? h.getTitle() : null; 2167 } 2168 2169 /** 2170 * Get the favicon for the current page. This is the favicon of the current 2171 * page until WebViewClient.onReceivedIcon is called. 2172 * @return The favicon for the current page. 2173 */ 2174 public Bitmap getFavicon() { 2175 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2176 return h != null ? h.getFavicon() : null; 2177 } 2178 2179 /** 2180 * Get the touch icon url for the apple-touch-icon <link> element. 2181 * @hide 2182 */ 2183 public String getTouchIconUrl() { 2184 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2185 return h != null ? h.getTouchIconUrl() : null; 2186 } 2187 2188 /** 2189 * Get the progress for the current page. 2190 * @return The progress for the current page between 0 and 100. 2191 */ 2192 public int getProgress() { 2193 return mCallbackProxy.getProgress(); 2194 } 2195 2196 /** 2197 * @return the height of the HTML content. 2198 */ 2199 public int getContentHeight() { 2200 return mContentHeight; 2201 } 2202 2203 /** 2204 * @return the width of the HTML content. 2205 * @hide 2206 */ 2207 public int getContentWidth() { 2208 return mContentWidth; 2209 } 2210 2211 /** 2212 * Pause all layout, parsing, and javascript timers for all webviews. This 2213 * is a global requests, not restricted to just this webview. This can be 2214 * useful if the application has been paused. 2215 */ 2216 public void pauseTimers() { 2217 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2218 } 2219 2220 /** 2221 * Resume all layout, parsing, and javascript timers for all webviews. 2222 * This will resume dispatching all timers. 2223 */ 2224 public void resumeTimers() { 2225 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2226 } 2227 2228 /** 2229 * Call this to pause any extra processing associated with this view and 2230 * its associated DOM/plugins/javascript/etc. For example, if the view is 2231 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2232 * network traffic. When the view is again "active", call onResume(). 2233 * 2234 * Note that this differs from pauseTimers(), which affects all views/DOMs 2235 * @hide 2236 */ 2237 public void onPause() { 2238 if (!mIsPaused) { 2239 mIsPaused = true; 2240 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2241 } 2242 } 2243 2244 /** 2245 * Call this to balanace a previous call to onPause() 2246 * @hide 2247 */ 2248 public void onResume() { 2249 if (mIsPaused) { 2250 mIsPaused = false; 2251 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2252 } 2253 } 2254 2255 /** 2256 * Returns true if the view is paused, meaning onPause() was called. Calling 2257 * onResume() sets the paused state back to false. 2258 * @hide 2259 */ 2260 public boolean isPaused() { 2261 return mIsPaused; 2262 } 2263 2264 /** 2265 * Call this to inform the view that memory is low so that it can 2266 * free any available memory. 2267 * @hide 2268 */ 2269 public void freeMemory() { 2270 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2271 } 2272 2273 /** 2274 * Clear the resource cache. Note that the cache is per-application, so 2275 * this will clear the cache for all WebViews used. 2276 * 2277 * @param includeDiskFiles If false, only the RAM cache is cleared. 2278 */ 2279 public void clearCache(boolean includeDiskFiles) { 2280 // Note: this really needs to be a static method as it clears cache for all 2281 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2282 // we can't make this static. 2283 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2284 includeDiskFiles ? 1 : 0, 0); 2285 } 2286 2287 /** 2288 * Make sure that clearing the form data removes the adapter from the 2289 * currently focused textfield if there is one. 2290 */ 2291 public void clearFormData() { 2292 if (inEditingMode()) { 2293 AutoCompleteAdapter adapter = null; 2294 mWebTextView.setAdapterCustom(adapter); 2295 } 2296 } 2297 2298 /** 2299 * Tell the WebView to clear its internal back/forward list. 2300 */ 2301 public void clearHistory() { 2302 mCallbackProxy.getBackForwardList().setClearPending(); 2303 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2304 } 2305 2306 /** 2307 * Clear the SSL preferences table stored in response to proceeding with SSL 2308 * certificate errors. 2309 */ 2310 public void clearSslPreferences() { 2311 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2312 } 2313 2314 /** 2315 * Return the WebBackForwardList for this WebView. This contains the 2316 * back/forward list for use in querying each item in the history stack. 2317 * This is a copy of the private WebBackForwardList so it contains only a 2318 * snapshot of the current state. Multiple calls to this method may return 2319 * different objects. The object returned from this method will not be 2320 * updated to reflect any new state. 2321 */ 2322 public WebBackForwardList copyBackForwardList() { 2323 return mCallbackProxy.getBackForwardList().clone(); 2324 } 2325 2326 /* 2327 * Highlight and scroll to the next occurance of String in findAll. 2328 * Wraps the page infinitely, and scrolls. Must be called after 2329 * calling findAll. 2330 * 2331 * @param forward Direction to search. 2332 */ 2333 public void findNext(boolean forward) { 2334 nativeFindNext(forward); 2335 } 2336 2337 /* 2338 * Find all instances of find on the page and highlight them. 2339 * @param find String to find. 2340 * @return int The number of occurances of the String "find" 2341 * that were found. 2342 */ 2343 public int findAll(String find) { 2344 if (mFindIsUp == false) { 2345 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2346 false); 2347 mFindIsUp = true; 2348 } 2349 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2350 invalidate(); 2351 return result; 2352 } 2353 2354 // Used to know whether the find dialog is open. Affects whether 2355 // or not we draw the highlights for matches. 2356 private boolean mFindIsUp; 2357 private int mFindHeight; 2358 2359 /** 2360 * Return the first substring consisting of the address of a physical 2361 * location. Currently, only addresses in the United States are detected, 2362 * and consist of: 2363 * - a house number 2364 * - a street name 2365 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2366 * - a city name 2367 * - a state or territory, either spelled out or two-letter abbr. 2368 * - an optional 5 digit or 9 digit zip code. 2369 * 2370 * All names must be correctly capitalized, and the zip code, if present, 2371 * must be valid for the state. The street type must be a standard USPS 2372 * spelling or abbreviation. The state or territory must also be spelled 2373 * or abbreviated using USPS standards. The house number may not exceed 2374 * five digits. 2375 * @param addr The string to search for addresses. 2376 * 2377 * @return the address, or if no address is found, return null. 2378 */ 2379 public static String findAddress(String addr) { 2380 return findAddress(addr, false); 2381 } 2382 2383 /** 2384 * @hide 2385 * Return the first substring consisting of the address of a physical 2386 * location. Currently, only addresses in the United States are detected, 2387 * and consist of: 2388 * - a house number 2389 * - a street name 2390 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2391 * - a city name 2392 * - a state or territory, either spelled out or two-letter abbr. 2393 * - an optional 5 digit or 9 digit zip code. 2394 * 2395 * Names are optionally capitalized, and the zip code, if present, 2396 * must be valid for the state. The street type must be a standard USPS 2397 * spelling or abbreviation. The state or territory must also be spelled 2398 * or abbreviated using USPS standards. The house number may not exceed 2399 * five digits. 2400 * @param addr The string to search for addresses. 2401 * @param caseInsensitive addr Set to true to make search ignore case. 2402 * 2403 * @return the address, or if no address is found, return null. 2404 */ 2405 public static String findAddress(String addr, boolean caseInsensitive) { 2406 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2407 } 2408 2409 /* 2410 * Clear the highlighting surrounding text matches created by findAll. 2411 */ 2412 public void clearMatches() { 2413 if (mFindIsUp) { 2414 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2415 false); 2416 mFindIsUp = false; 2417 } 2418 nativeSetFindIsDown(); 2419 // Now that the dialog has been removed, ensure that we scroll to a 2420 // location that is not beyond the end of the page. 2421 pinScrollTo(mScrollX, mScrollY, false, 0); 2422 invalidate(); 2423 } 2424 2425 /** 2426 * @hide 2427 */ 2428 public void setFindDialogHeight(int height) { 2429 if (DebugFlags.WEB_VIEW) { 2430 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2431 } 2432 mFindHeight = height; 2433 } 2434 2435 /** 2436 * Query the document to see if it contains any image references. The 2437 * message object will be dispatched with arg1 being set to 1 if images 2438 * were found and 0 if the document does not reference any images. 2439 * @param response The message that will be dispatched with the result. 2440 */ 2441 public void documentHasImages(Message response) { 2442 if (response == null) { 2443 return; 2444 } 2445 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2446 } 2447 2448 @Override 2449 public void computeScroll() { 2450 if (mScroller.computeScrollOffset()) { 2451 int oldX = mScrollX; 2452 int oldY = mScrollY; 2453 mScrollX = mScroller.getCurrX(); 2454 mScrollY = mScroller.getCurrY(); 2455 postInvalidate(); // So we draw again 2456 if (oldX != mScrollX || oldY != mScrollY) { 2457 // as onScrollChanged() is not called, sendOurVisibleRect() 2458 // needs to be call explicitly 2459 sendOurVisibleRect(); 2460 } 2461 } else { 2462 super.computeScroll(); 2463 } 2464 } 2465 2466 private static int computeDuration(int dx, int dy) { 2467 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2468 int duration = distance * 1000 / STD_SPEED; 2469 return Math.min(duration, MAX_DURATION); 2470 } 2471 2472 // helper to pin the scrollBy parameters (already in view coordinates) 2473 // returns true if the scroll was changed 2474 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2475 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2476 } 2477 // helper to pin the scrollTo parameters (already in view coordinates) 2478 // returns true if the scroll was changed 2479 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2480 x = pinLocX(x); 2481 y = pinLocY(y); 2482 int dx = x - mScrollX; 2483 int dy = y - mScrollY; 2484 2485 if ((dx | dy) == 0) { 2486 return false; 2487 } 2488 if (animate) { 2489 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2490 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2491 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2492 awakenScrollBars(mScroller.getDuration()); 2493 invalidate(); 2494 } else { 2495 abortAnimation(); // just in case 2496 scrollTo(x, y); 2497 } 2498 return true; 2499 } 2500 2501 // Scale from content to view coordinates, and pin. 2502 // Also called by jni webview.cpp 2503 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2504 if (mDrawHistory) { 2505 // disallow WebView to change the scroll position as History Picture 2506 // is used in the view system. 2507 // TODO: as we switchOutDrawHistory when trackball or navigation 2508 // keys are hit, this should be safe. Right? 2509 return false; 2510 } 2511 cx = contentToViewDimension(cx); 2512 cy = contentToViewDimension(cy); 2513 if (mHeightCanMeasure) { 2514 // move our visible rect according to scroll request 2515 if (cy != 0) { 2516 Rect tempRect = new Rect(); 2517 calcOurVisibleRect(tempRect); 2518 tempRect.offset(cx, cy); 2519 requestRectangleOnScreen(tempRect); 2520 } 2521 // FIXME: We scroll horizontally no matter what because currently 2522 // ScrollView and ListView will not scroll horizontally. 2523 // FIXME: Why do we only scroll horizontally if there is no 2524 // vertical scroll? 2525// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2526 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2527 } else { 2528 return pinScrollBy(cx, cy, animate, 0); 2529 } 2530 } 2531 2532 // scale from content to view coordinates, and pin 2533 // return true if pin caused the final x/y different than the request cx/cy, 2534 // and a future scroll may reach the request cx/cy after our size has 2535 // changed 2536 // return false if the view scroll to the exact position as it is requested, 2537 // where negative numbers are taken to mean 0 2538 private boolean setContentScrollTo(int cx, int cy) { 2539 if (mDrawHistory) { 2540 // disallow WebView to change the scroll position as History Picture 2541 // is used in the view system. 2542 // One known case where this is called is that WebCore tries to 2543 // restore the scroll position. As history Picture already uses the 2544 // saved scroll position, it is ok to skip this. 2545 return false; 2546 } 2547 int vx; 2548 int vy; 2549 if ((cx | cy) == 0) { 2550 // If the page is being scrolled to (0,0), do not add in the title 2551 // bar's height, and simply scroll to (0,0). (The only other work 2552 // in contentToView_ is to multiply, so this would not change 0.) 2553 vx = 0; 2554 vy = 0; 2555 } else { 2556 vx = contentToViewX(cx); 2557 vy = contentToViewY(cy); 2558 } 2559// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2560// vx + " " + vy + "]"); 2561 // Some mobile sites attempt to scroll the title bar off the page by 2562 // scrolling to (0,1). If we are at the top left corner of the 2563 // page, assume this is an attempt to scroll off the title bar, and 2564 // animate the title bar off screen slowly enough that the user can see 2565 // it. 2566 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0) { 2567 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2568 // Since we are animating, we have not yet reached the desired 2569 // scroll position. Do not return true to request another attempt 2570 return false; 2571 } 2572 pinScrollTo(vx, vy, false, 0); 2573 // If the request was to scroll to a negative coordinate, treat it as if 2574 // it was a request to scroll to 0 2575 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2576 return true; 2577 } else { 2578 return false; 2579 } 2580 } 2581 2582 // scale from content to view coordinates, and pin 2583 private void spawnContentScrollTo(int cx, int cy) { 2584 if (mDrawHistory) { 2585 // disallow WebView to change the scroll position as History Picture 2586 // is used in the view system. 2587 return; 2588 } 2589 int vx = contentToViewX(cx); 2590 int vy = contentToViewY(cy); 2591 pinScrollTo(vx, vy, true, 0); 2592 } 2593 2594 /** 2595 * These are from webkit, and are in content coordinate system (unzoomed) 2596 */ 2597 private void contentSizeChanged(boolean updateLayout) { 2598 // suppress 0,0 since we usually see real dimensions soon after 2599 // this avoids drawing the prev content in a funny place. If we find a 2600 // way to consolidate these notifications, this check may become 2601 // obsolete 2602 if ((mContentWidth | mContentHeight) == 0) { 2603 return; 2604 } 2605 2606 if (mHeightCanMeasure) { 2607 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2608 && updateLayout) { 2609 requestLayout(); 2610 } 2611 } else if (mWidthCanMeasure) { 2612 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2613 && updateLayout) { 2614 requestLayout(); 2615 } 2616 } else { 2617 // If we don't request a layout, try to send our view size to the 2618 // native side to ensure that WebCore has the correct dimensions. 2619 sendViewSizeZoom(); 2620 } 2621 } 2622 2623 /** 2624 * Set the WebViewClient that will receive various notifications and 2625 * requests. This will replace the current handler. 2626 * @param client An implementation of WebViewClient. 2627 */ 2628 public void setWebViewClient(WebViewClient client) { 2629 mCallbackProxy.setWebViewClient(client); 2630 } 2631 2632 /** 2633 * Register the interface to be used when content can not be handled by 2634 * the rendering engine, and should be downloaded instead. This will replace 2635 * the current handler. 2636 * @param listener An implementation of DownloadListener. 2637 */ 2638 public void setDownloadListener(DownloadListener listener) { 2639 mCallbackProxy.setDownloadListener(listener); 2640 } 2641 2642 /** 2643 * Set the chrome handler. This is an implementation of WebChromeClient for 2644 * use in handling Javascript dialogs, favicons, titles, and the progress. 2645 * This will replace the current handler. 2646 * @param client An implementation of WebChromeClient. 2647 */ 2648 public void setWebChromeClient(WebChromeClient client) { 2649 mCallbackProxy.setWebChromeClient(client); 2650 } 2651 2652 /** 2653 * Gets the chrome handler. 2654 * @return the current WebChromeClient instance. 2655 * 2656 * @hide API council approval. 2657 */ 2658 public WebChromeClient getWebChromeClient() { 2659 return mCallbackProxy.getWebChromeClient(); 2660 } 2661 2662 /** 2663 * Set the Picture listener. This is an interface used to receive 2664 * notifications of a new Picture. 2665 * @param listener An implementation of WebView.PictureListener. 2666 */ 2667 public void setPictureListener(PictureListener listener) { 2668 mPictureListener = listener; 2669 } 2670 2671 /** 2672 * {@hide} 2673 */ 2674 /* FIXME: Debug only! Remove for SDK! */ 2675 public void externalRepresentation(Message callback) { 2676 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2677 } 2678 2679 /** 2680 * {@hide} 2681 */ 2682 /* FIXME: Debug only! Remove for SDK! */ 2683 public void documentAsText(Message callback) { 2684 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2685 } 2686 2687 /** 2688 * Use this function to bind an object to Javascript so that the 2689 * methods can be accessed from Javascript. 2690 * <p><strong>IMPORTANT:</strong> 2691 * <ul> 2692 * <li> Using addJavascriptInterface() allows JavaScript to control your 2693 * application. This can be a very useful feature or a dangerous security 2694 * issue. When the HTML in the WebView is untrustworthy (for example, part 2695 * or all of the HTML is provided by some person or process), then an 2696 * attacker could inject HTML that will execute your code and possibly any 2697 * code of the attacker's choosing.<br> 2698 * Do not use addJavascriptInterface() unless all of the HTML in this 2699 * WebView was written by you.</li> 2700 * <li> The Java object that is bound runs in another thread and not in 2701 * the thread that it was constructed in.</li> 2702 * </ul></p> 2703 * @param obj The class instance to bind to Javascript 2704 * @param interfaceName The name to used to expose the class in Javascript 2705 */ 2706 public void addJavascriptInterface(Object obj, String interfaceName) { 2707 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2708 arg.mObject = obj; 2709 arg.mInterfaceName = interfaceName; 2710 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2711 } 2712 2713 /** 2714 * Return the WebSettings object used to control the settings for this 2715 * WebView. 2716 * @return A WebSettings object that can be used to control this WebView's 2717 * settings. 2718 */ 2719 public WebSettings getSettings() { 2720 return mWebViewCore.getSettings(); 2721 } 2722 2723 /** 2724 * Return the list of currently loaded plugins. 2725 * @return The list of currently loaded plugins. 2726 * 2727 * @deprecated This was used for Gears, which has been deprecated. 2728 */ 2729 @Deprecated 2730 public static synchronized PluginList getPluginList() { 2731 return null; 2732 } 2733 2734 /** 2735 * @deprecated This was used for Gears, which has been deprecated. 2736 */ 2737 @Deprecated 2738 public void refreshPlugins(boolean reloadOpenPages) { } 2739 2740 //------------------------------------------------------------------------- 2741 // Override View methods 2742 //------------------------------------------------------------------------- 2743 2744 @Override 2745 protected void finalize() throws Throwable { 2746 try { 2747 destroy(); 2748 } finally { 2749 super.finalize(); 2750 } 2751 } 2752 2753 @Override 2754 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 2755 if (child == mTitleBar) { 2756 // When drawing the title bar, move it horizontally to always show 2757 // at the top of the WebView. 2758 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 2759 } 2760 return super.drawChild(canvas, child, drawingTime); 2761 } 2762 2763 @Override 2764 protected void onDraw(Canvas canvas) { 2765 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 2766 if (mNativeClass == 0) { 2767 return; 2768 } 2769 int saveCount = canvas.save(); 2770 if (mTitleBar != null) { 2771 canvas.translate(0, (int) mTitleBar.getHeight()); 2772 } 2773 // Update the buttons in the picture, so when we draw the picture 2774 // to the screen, they are in the correct state. 2775 // Tell the native side if user is a) touching the screen, 2776 // b) pressing the trackball down, or c) pressing the enter key 2777 // If the cursor is on a button, we need to draw it in the pressed 2778 // state. 2779 // If mNativeClass is 0, we should not reach here, so we do not 2780 // need to check it again. 2781 nativeRecordButtons(hasFocus() && hasWindowFocus(), 2782 mTouchMode == TOUCH_SHORTPRESS_START_MODE 2783 || mTrackballDown || mGotCenterDown, false); 2784 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 2785 canvas.restoreToCount(saveCount); 2786 2787 // Now draw the shadow. 2788 if (mTitleBar != null) { 2789 int y = mScrollY + getVisibleTitleHeight(); 2790 int height = (int) (5f * getContext().getResources() 2791 .getDisplayMetrics().density); 2792 mTitleShadow.setBounds(mScrollX, y, mScrollX + getWidth(), 2793 y + height); 2794 mTitleShadow.draw(canvas); 2795 } 2796 if (AUTO_REDRAW_HACK && mAutoRedraw) { 2797 invalidate(); 2798 } 2799 } 2800 2801 @Override 2802 public void setLayoutParams(ViewGroup.LayoutParams params) { 2803 if (params.height == LayoutParams.WRAP_CONTENT) { 2804 mWrapContent = true; 2805 } 2806 super.setLayoutParams(params); 2807 } 2808 2809 @Override 2810 public boolean performLongClick() { 2811 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 2812 // Send the click so that the textfield is in focus 2813 // FIXME: When we start respecting changes to the native textfield's 2814 // selection, need to make sure that this does not change it. 2815 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 2816 nativeCursorNodePointer()); 2817 rebuildWebTextView(); 2818 } 2819 if (inEditingMode()) { 2820 return mWebTextView.performLongClick(); 2821 } else { 2822 return super.performLongClick(); 2823 } 2824 } 2825 2826 boolean inAnimateZoom() { 2827 return mZoomScale != 0; 2828 } 2829 2830 /** 2831 * Need to adjust the WebTextView after a change in zoom, since mActualScale 2832 * has changed. This is especially important for password fields, which are 2833 * drawn by the WebTextView, since it conveys more information than what 2834 * webkit draws. Thus we need to reposition it to show in the correct 2835 * place. 2836 */ 2837 private boolean mNeedToAdjustWebTextView; 2838 2839 private void drawCoreAndCursorRing(Canvas canvas, int color, 2840 boolean drawCursorRing) { 2841 if (mDrawHistory) { 2842 canvas.scale(mActualScale, mActualScale); 2843 canvas.drawPicture(mHistoryPicture); 2844 return; 2845 } 2846 2847 boolean animateZoom = mZoomScale != 0; 2848 boolean animateScroll = !mScroller.isFinished() 2849 || mVelocityTracker != null; 2850 if (animateZoom) { 2851 float zoomScale; 2852 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 2853 if (interval < ZOOM_ANIMATION_LENGTH) { 2854 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 2855 zoomScale = 1.0f / (mInvInitialZoomScale 2856 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 2857 invalidate(); 2858 } else { 2859 zoomScale = mZoomScale; 2860 // set mZoomScale to be 0 as we have done animation 2861 mZoomScale = 0; 2862 // call invalidate() again to draw with the final filters 2863 invalidate(); 2864 if (mNeedToAdjustWebTextView) { 2865 mNeedToAdjustWebTextView = false; 2866 Rect contentBounds = nativeFocusCandidateNodeBounds(); 2867 Rect vBox = contentToViewRect(contentBounds); 2868 Rect visibleRect = new Rect(); 2869 calcOurVisibleRect(visibleRect); 2870 if (visibleRect.contains(vBox)) { 2871 // As a result of the zoom, the textfield is now on 2872 // screen. Place the WebTextView in its new place, 2873 // accounting for our new scroll/zoom values. 2874 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 2875 contentToViewDimension( 2876 nativeFocusCandidateTextSize())); 2877 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 2878 vBox.height()); 2879 // If it is a password field, start drawing the 2880 // WebTextView once again. 2881 if (nativeFocusCandidateIsPassword()) { 2882 mWebTextView.setInPassword(true); 2883 } 2884 } else { 2885 // The textfield is now off screen. The user probably 2886 // was not zooming to see the textfield better. Remove 2887 // the WebTextView. If the user types a key, and the 2888 // textfield is still in focus, we will reconstruct 2889 // the WebTextView and scroll it back on screen. 2890 mWebTextView.remove(); 2891 } 2892 } 2893 } 2894 // calculate the intermediate scroll position. As we need to use 2895 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 2896 float scale = zoomScale * mInvInitialZoomScale; 2897 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 2898 - mZoomCenterX); 2899 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 2900 * zoomScale)) + mScrollX; 2901 int titleHeight = getTitleHeight(); 2902 int ty = Math.round(scale 2903 * (mInitialScrollY + mZoomCenterY - titleHeight) 2904 - (mZoomCenterY - titleHeight)); 2905 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 2906 - titleHeight, getViewHeight(), Math.round(mContentHeight 2907 * zoomScale)) + titleHeight) + mScrollY; 2908 canvas.translate(tx, ty); 2909 canvas.scale(zoomScale, zoomScale); 2910 if (inEditingMode() && !mNeedToAdjustWebTextView 2911 && mZoomScale != 0) { 2912 // The WebTextView is up. Keep track of this so we can adjust 2913 // its size and placement when we finish zooming 2914 mNeedToAdjustWebTextView = true; 2915 // If it is in password mode, turn it off so it does not draw 2916 // misplaced. 2917 if (nativeFocusCandidateIsPassword()) { 2918 mWebTextView.setInPassword(false); 2919 } 2920 } 2921 } else { 2922 canvas.scale(mActualScale, mActualScale); 2923 } 2924 2925 mWebViewCore.drawContentPicture(canvas, color, animateZoom, 2926 animateScroll); 2927 2928 if (mNativeClass == 0) return; 2929 if (mShiftIsPressed && !animateZoom) { 2930 if (mTouchSelection) { 2931 nativeDrawSelectionRegion(canvas); 2932 } else { 2933 nativeDrawSelection(canvas, mInvActualScale, getTitleHeight(), 2934 mSelectX, mSelectY, mExtendSelection); 2935 } 2936 } else if (drawCursorRing) { 2937 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 2938 mTouchMode = TOUCH_SHORTPRESS_MODE; 2939 HitTestResult hitTest = getHitTestResult(); 2940 if (hitTest != null && 2941 hitTest.mType != HitTestResult.UNKNOWN_TYPE) { 2942 mPrivateHandler.sendMessageDelayed(mPrivateHandler 2943 .obtainMessage(SWITCH_TO_LONGPRESS), 2944 LONG_PRESS_TIMEOUT); 2945 } 2946 } 2947 nativeDrawCursorRing(canvas); 2948 } 2949 // When the FindDialog is up, only draw the matches if we are not in 2950 // the process of scrolling them into view. 2951 if (mFindIsUp && !animateScroll) { 2952 nativeDrawMatches(canvas); 2953 } 2954 } 2955 2956 // draw history 2957 private boolean mDrawHistory = false; 2958 private Picture mHistoryPicture = null; 2959 private int mHistoryWidth = 0; 2960 private int mHistoryHeight = 0; 2961 2962 // Only check the flag, can be called from WebCore thread 2963 boolean drawHistory() { 2964 return mDrawHistory; 2965 } 2966 2967 // Should only be called in UI thread 2968 void switchOutDrawHistory() { 2969 if (null == mWebViewCore) return; // CallbackProxy may trigger this 2970 if (mDrawHistory && mWebViewCore.pictureReady()) { 2971 mDrawHistory = false; 2972 invalidate(); 2973 int oldScrollX = mScrollX; 2974 int oldScrollY = mScrollY; 2975 mScrollX = pinLocX(mScrollX); 2976 mScrollY = pinLocY(mScrollY); 2977 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 2978 mUserScroll = false; 2979 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 2980 oldScrollY); 2981 } 2982 sendOurVisibleRect(); 2983 } 2984 } 2985 2986 WebViewCore.CursorData cursorData() { 2987 WebViewCore.CursorData result = new WebViewCore.CursorData(); 2988 result.mMoveGeneration = nativeMoveGeneration(); 2989 result.mFrame = nativeCursorFramePointer(); 2990 Point position = nativeCursorPosition(); 2991 result.mX = position.x; 2992 result.mY = position.y; 2993 return result; 2994 } 2995 2996 /** 2997 * Delete text from start to end in the focused textfield. If there is no 2998 * focus, or if start == end, silently fail. If start and end are out of 2999 * order, swap them. 3000 * @param start Beginning of selection to delete. 3001 * @param end End of selection to delete. 3002 */ 3003 /* package */ void deleteSelection(int start, int end) { 3004 mTextGeneration++; 3005 WebViewCore.TextSelectionData data 3006 = new WebViewCore.TextSelectionData(start, end); 3007 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3008 data); 3009 } 3010 3011 /** 3012 * Set the selection to (start, end) in the focused textfield. If start and 3013 * end are out of order, swap them. 3014 * @param start Beginning of selection. 3015 * @param end End of selection. 3016 */ 3017 /* package */ void setSelection(int start, int end) { 3018 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3019 } 3020 3021 // Called by JNI when a touch event puts a textfield into focus. 3022 private void displaySoftKeyboard(boolean isTextView) { 3023 InputMethodManager imm = (InputMethodManager) 3024 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3025 3026 if (isTextView) { 3027 if (mWebTextView == null) return; 3028 3029 imm.showSoftInput(mWebTextView, 0); 3030 if (mInZoomOverview) { 3031 // if in zoom overview mode, call doDoubleTap() to bring it back 3032 // to normal mode so that user can enter text. 3033 doDoubleTap(); 3034 } 3035 } 3036 else { // used by plugins 3037 imm.showSoftInput(this, 0); 3038 } 3039 } 3040 3041 // Called by WebKit to instruct the UI to hide the keyboard 3042 private void hideSoftKeyboard() { 3043 InputMethodManager imm = (InputMethodManager) 3044 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3045 3046 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3047 } 3048 3049 /* 3050 * This method checks the current focus and cursor and potentially rebuilds 3051 * mWebTextView to have the appropriate properties, such as password, 3052 * multiline, and what text it contains. It also removes it if necessary. 3053 */ 3054 /* package */ void rebuildWebTextView() { 3055 // If the WebView does not have focus, do nothing until it gains focus. 3056 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3057 return; 3058 } 3059 boolean alreadyThere = inEditingMode(); 3060 // inEditingMode can only return true if mWebTextView is non-null, 3061 // so we can safely call remove() if (alreadyThere) 3062 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3063 if (alreadyThere) { 3064 mWebTextView.remove(); 3065 } 3066 return; 3067 } 3068 // At this point, we know we have found an input field, so go ahead 3069 // and create the WebTextView if necessary. 3070 if (mWebTextView == null) { 3071 mWebTextView = new WebTextView(mContext, WebView.this); 3072 // Initialize our generation number. 3073 mTextGeneration = 0; 3074 } 3075 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3076 contentToViewDimension(nativeFocusCandidateTextSize())); 3077 Rect visibleRect = new Rect(); 3078 calcOurContentVisibleRect(visibleRect); 3079 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3080 // should be in content coordinates. 3081 Rect bounds = nativeFocusCandidateNodeBounds(); 3082 if (!Rect.intersects(bounds, visibleRect)) { 3083 mWebTextView.bringIntoView(); 3084 } 3085 String text = nativeFocusCandidateText(); 3086 int nodePointer = nativeFocusCandidatePointer(); 3087 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3088 // It is possible that we have the same textfield, but it has moved, 3089 // i.e. In the case of opening/closing the screen. 3090 // In that case, we need to set the dimensions, but not the other 3091 // aspects. 3092 // We also need to restore the selection, which gets wrecked by 3093 // calling setTextEntryRect. 3094 Spannable spannable = (Spannable) mWebTextView.getText(); 3095 int start = Selection.getSelectionStart(spannable); 3096 int end = Selection.getSelectionEnd(spannable); 3097 // If the text has been changed by webkit, update it. However, if 3098 // there has been more UI text input, ignore it. We will receive 3099 // another update when that text is recognized. 3100 if (text != null && !text.equals(spannable.toString()) 3101 && nativeTextGeneration() == mTextGeneration) { 3102 mWebTextView.setTextAndKeepSelection(text); 3103 } else { 3104 Selection.setSelection(spannable, start, end); 3105 } 3106 } else { 3107 Rect vBox = contentToViewRect(bounds); 3108 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3109 vBox.height()); 3110 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3111 Gravity.RIGHT : Gravity.NO_GRAVITY); 3112 // this needs to be called before update adapter thread starts to 3113 // ensure the mWebTextView has the same node pointer 3114 mWebTextView.setNodePointer(nodePointer); 3115 int maxLength = -1; 3116 boolean isTextField = nativeFocusCandidateIsTextField(); 3117 if (isTextField) { 3118 maxLength = nativeFocusCandidateMaxLength(); 3119 String name = nativeFocusCandidateName(); 3120 if (mWebViewCore.getSettings().getSaveFormData() 3121 && name != null) { 3122 Message update = mPrivateHandler.obtainMessage( 3123 REQUEST_FORM_DATA, nodePointer); 3124 RequestFormData updater = new RequestFormData(name, 3125 getUrl(), update); 3126 Thread t = new Thread(updater); 3127 t.start(); 3128 } 3129 } 3130 mWebTextView.setMaxLength(maxLength); 3131 AutoCompleteAdapter adapter = null; 3132 mWebTextView.setAdapterCustom(adapter); 3133 mWebTextView.setSingleLine(isTextField); 3134 mWebTextView.setInPassword(nativeFocusCandidateIsPassword()); 3135 if (null == text) { 3136 mWebTextView.setText("", 0, 0); 3137 if (DebugFlags.WEB_VIEW) { 3138 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3139 } 3140 } else { 3141 // Change to true to enable the old style behavior, where 3142 // entering a textfield/textarea always set the selection to the 3143 // whole field. This was desirable for the case where the user 3144 // intends to scroll past the field using the trackball. 3145 // However, it causes a problem when replying to emails - the 3146 // user expects the cursor to be at the beginning of the 3147 // textarea. Testing out a new behavior, where textfields set 3148 // selection at the end, and textareas at the beginning. 3149 if (false) { 3150 mWebTextView.setText(text, 0, text.length()); 3151 } else if (isTextField) { 3152 int length = text.length(); 3153 mWebTextView.setText(text, length, length); 3154 if (DebugFlags.WEB_VIEW) { 3155 Log.v(LOGTAG, "rebuildWebTextView length=" + length); 3156 } 3157 } else { 3158 mWebTextView.setText(text, 0, 0); 3159 if (DebugFlags.WEB_VIEW) { 3160 Log.v(LOGTAG, "rebuildWebTextView !isTextField"); 3161 } 3162 } 3163 } 3164 mWebTextView.requestFocus(); 3165 } 3166 } 3167 3168 /* 3169 * This class requests an Adapter for the WebTextView which shows past 3170 * entries stored in the database. It is a Runnable so that it can be done 3171 * in its own thread, without slowing down the UI. 3172 */ 3173 private class RequestFormData implements Runnable { 3174 private String mName; 3175 private String mUrl; 3176 private Message mUpdateMessage; 3177 3178 public RequestFormData(String name, String url, Message msg) { 3179 mName = name; 3180 mUrl = url; 3181 mUpdateMessage = msg; 3182 } 3183 3184 public void run() { 3185 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3186 if (pastEntries.size() > 0) { 3187 AutoCompleteAdapter adapter = new 3188 AutoCompleteAdapter(mContext, pastEntries); 3189 mUpdateMessage.obj = adapter; 3190 mUpdateMessage.sendToTarget(); 3191 } 3192 } 3193 } 3194 3195 // This is used to determine long press with the center key. Does not 3196 // affect long press with the trackball/touch. 3197 private boolean mGotCenterDown = false; 3198 3199 @Override 3200 public boolean onKeyDown(int keyCode, KeyEvent event) { 3201 if (DebugFlags.WEB_VIEW) { 3202 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3203 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3204 } 3205 3206 if (mNativeClass == 0) { 3207 return false; 3208 } 3209 3210 // do this hack up front, so it always works, regardless of touch-mode 3211 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3212 mAutoRedraw = !mAutoRedraw; 3213 if (mAutoRedraw) { 3214 invalidate(); 3215 } 3216 return true; 3217 } 3218 3219 // Bubble up the key event if 3220 // 1. it is a system key; or 3221 // 2. the host application wants to handle it; 3222 if (event.isSystem() 3223 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3224 return false; 3225 } 3226 3227 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3228 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3229 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3230 mExtendSelection = false; 3231 mShiftIsPressed = true; 3232 if (nativeHasCursorNode()) { 3233 Rect rect = nativeCursorNodeBounds(); 3234 mSelectX = contentToViewX(rect.left); 3235 mSelectY = contentToViewY(rect.top); 3236 } else { 3237 mSelectX = mScrollX + (int) mLastTouchX; 3238 mSelectY = mScrollY + (int) mLastTouchY; 3239 } 3240 nativeHideCursor(); 3241 } 3242 3243 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3244 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3245 // always handle the navigation keys in the UI thread 3246 switchOutDrawHistory(); 3247 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3248 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3249 return true; 3250 } 3251 // Bubble up the key event as WebView doesn't handle it 3252 return false; 3253 } 3254 3255 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3256 switchOutDrawHistory(); 3257 if (event.getRepeatCount() == 0) { 3258 mGotCenterDown = true; 3259 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3260 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3261 // Already checked mNativeClass, so we do not need to check it 3262 // again. 3263 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3264 return true; 3265 } 3266 // Bubble up the key event as WebView doesn't handle it 3267 return false; 3268 } 3269 3270 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3271 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3272 // turn off copy select if a shift-key combo is pressed 3273 mExtendSelection = mShiftIsPressed = false; 3274 if (mTouchMode == TOUCH_SELECT_MODE) { 3275 mTouchMode = TOUCH_INIT_MODE; 3276 } 3277 } 3278 3279 if (getSettings().getNavDump()) { 3280 switch (keyCode) { 3281 case KeyEvent.KEYCODE_4: 3282 // "/data/data/com.android.browser/displayTree.txt" 3283 nativeDumpDisplayTree(getUrl()); 3284 break; 3285 case KeyEvent.KEYCODE_5: 3286 case KeyEvent.KEYCODE_6: 3287 // 5: dump the dom tree to the file 3288 // "/data/data/com.android.browser/domTree.txt" 3289 // 6: dump the dom tree to the adb log 3290 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, 3291 (keyCode == KeyEvent.KEYCODE_5) ? 1 : 0, 0); 3292 break; 3293 case KeyEvent.KEYCODE_7: 3294 case KeyEvent.KEYCODE_8: 3295 // 7: dump the render tree to the file 3296 // "/data/data/com.android.browser/renderTree.txt" 3297 // 8: dump the render tree to the adb log 3298 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, 3299 (keyCode == KeyEvent.KEYCODE_7) ? 1 : 0, 0); 3300 break; 3301 case KeyEvent.KEYCODE_9: 3302 nativeInstrumentReport(); 3303 return true; 3304 } 3305 } 3306 3307 if (nativeCursorIsPlugin()) { 3308 nativeUpdatePluginReceivesEvents(); 3309 invalidate(); 3310 } else if (nativeCursorIsTextInput()) { 3311 // This message will put the node in focus, for the DOM's notion 3312 // of focus, and make the focuscontroller active 3313 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3314 nativeCursorNodePointer()); 3315 // This will bring up the WebTextView and put it in focus, for 3316 // our view system's notion of focus 3317 rebuildWebTextView(); 3318 // Now we need to pass the event to it 3319 return mWebTextView.onKeyDown(keyCode, event); 3320 } else if (nativeHasFocusNode()) { 3321 // In this case, the cursor is not on a text input, but the focus 3322 // might be. Check it, and if so, hand over to the WebTextView. 3323 rebuildWebTextView(); 3324 if (inEditingMode()) { 3325 return mWebTextView.onKeyDown(keyCode, event); 3326 } 3327 } 3328 3329 // TODO: should we pass all the keys to DOM or check the meta tag 3330 if (nativeCursorWantsKeyEvents() || true) { 3331 // pass the key to DOM 3332 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3333 // return true as DOM handles the key 3334 return true; 3335 } 3336 3337 // Bubble up the key event as WebView doesn't handle it 3338 return false; 3339 } 3340 3341 @Override 3342 public boolean onKeyUp(int keyCode, KeyEvent event) { 3343 if (DebugFlags.WEB_VIEW) { 3344 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3345 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3346 } 3347 3348 if (mNativeClass == 0) { 3349 return false; 3350 } 3351 3352 // special CALL handling when cursor node's href is "tel:XXX" 3353 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3354 String text = nativeCursorText(); 3355 if (!nativeCursorIsTextInput() && text != null 3356 && text.startsWith(SCHEME_TEL)) { 3357 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3358 getContext().startActivity(intent); 3359 return true; 3360 } 3361 } 3362 3363 // Bubble up the key event if 3364 // 1. it is a system key; or 3365 // 2. the host application wants to handle it; 3366 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3367 return false; 3368 } 3369 3370 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3371 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3372 if (commitCopy()) { 3373 return true; 3374 } 3375 } 3376 3377 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3378 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3379 // always handle the navigation keys in the UI thread 3380 // Bubble up the key event as WebView doesn't handle it 3381 return false; 3382 } 3383 3384 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3385 // remove the long press message first 3386 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3387 mGotCenterDown = false; 3388 3389 if (mShiftIsPressed) { 3390 return false; 3391 } 3392 3393 // perform the single click 3394 Rect visibleRect = sendOurVisibleRect(); 3395 // Note that sendOurVisibleRect calls viewToContent, so the 3396 // coordinates should be in content coordinates. 3397 if (!nativeCursorIntersects(visibleRect)) { 3398 return false; 3399 } 3400 nativeSetFollowedLink(true); 3401 nativeUpdatePluginReceivesEvents(); 3402 WebViewCore.CursorData data = cursorData(); 3403 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3404 playSoundEffect(SoundEffectConstants.CLICK); 3405 boolean isTextInput = nativeCursorIsTextInput(); 3406 if (isTextInput || !mCallbackProxy.uiOverrideUrlLoading( 3407 nativeCursorText())) { 3408 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3409 nativeCursorNodePointer()); 3410 } 3411 if (isTextInput) { 3412 rebuildWebTextView(); 3413 } 3414 return true; 3415 } 3416 3417 // TODO: should we pass all the keys to DOM or check the meta tag 3418 if (nativeCursorWantsKeyEvents() || true) { 3419 // pass the key to DOM 3420 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3421 // return true as DOM handles the key 3422 return true; 3423 } 3424 3425 // Bubble up the key event as WebView doesn't handle it 3426 return false; 3427 } 3428 3429 /** 3430 * @hide 3431 */ 3432 public void emulateShiftHeld() { 3433 mExtendSelection = false; 3434 mShiftIsPressed = true; 3435 nativeHideCursor(); 3436 } 3437 3438 private boolean commitCopy() { 3439 boolean copiedSomething = false; 3440 if (mExtendSelection) { 3441 // copy region so core operates on copy without touching orig. 3442 Region selection = new Region(nativeGetSelection()); 3443 if (selection.isEmpty() == false) { 3444 Toast.makeText(mContext 3445 , com.android.internal.R.string.text_copied 3446 , Toast.LENGTH_SHORT).show(); 3447 mWebViewCore.sendMessage(EventHub.GET_SELECTION, selection); 3448 copiedSomething = true; 3449 } 3450 mExtendSelection = false; 3451 } 3452 mShiftIsPressed = false; 3453 if (mTouchMode == TOUCH_SELECT_MODE) { 3454 mTouchMode = TOUCH_INIT_MODE; 3455 } 3456 return copiedSomething; 3457 } 3458 3459 // Set this as a hierarchy change listener so we can know when this view 3460 // is removed and still have access to our parent. 3461 @Override 3462 protected void onAttachedToWindow() { 3463 super.onAttachedToWindow(); 3464 ViewParent parent = getParent(); 3465 if (parent instanceof ViewGroup) { 3466 ViewGroup p = (ViewGroup) parent; 3467 p.setOnHierarchyChangeListener(this); 3468 } 3469 } 3470 3471 @Override 3472 protected void onDetachedFromWindow() { 3473 super.onDetachedFromWindow(); 3474 ViewParent parent = getParent(); 3475 if (parent instanceof ViewGroup) { 3476 ViewGroup p = (ViewGroup) parent; 3477 p.setOnHierarchyChangeListener(null); 3478 } 3479 3480 // Clean up the zoom controller 3481 mZoomButtonsController.setVisible(false); 3482 } 3483 3484 // Implementation for OnHierarchyChangeListener 3485 public void onChildViewAdded(View parent, View child) {} 3486 3487 public void onChildViewRemoved(View p, View child) { 3488 if (child == this) { 3489 clearTextEntry(); 3490 } 3491 } 3492 3493 /** 3494 * @deprecated WebView should not have implemented 3495 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3496 * does nothing now. 3497 */ 3498 @Deprecated 3499 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3500 } 3501 3502 // To avoid drawing the cursor ring, and remove the TextView when our window 3503 // loses focus. 3504 @Override 3505 public void onWindowFocusChanged(boolean hasWindowFocus) { 3506 if (hasWindowFocus) { 3507 if (hasFocus()) { 3508 // If our window regained focus, and we have focus, then begin 3509 // drawing the cursor ring 3510 mDrawCursorRing = true; 3511 if (mNativeClass != 0) { 3512 nativeRecordButtons(true, false, true); 3513 if (inEditingMode()) { 3514 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3515 } 3516 } 3517 } else { 3518 // If our window gained focus, but we do not have it, do not 3519 // draw the cursor ring. 3520 mDrawCursorRing = false; 3521 // We do not call nativeRecordButtons here because we assume 3522 // that when we lost focus, or window focus, it got called with 3523 // false for the first parameter 3524 } 3525 } else { 3526 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3527 /* 3528 * The zoom controls come in their own window, so our window 3529 * loses focus. Our policy is to not draw the cursor ring if 3530 * our window is not focused, but this is an exception since 3531 * the user can still navigate the web page with the zoom 3532 * controls showing. 3533 */ 3534 // If our window has lost focus, stop drawing the cursor ring 3535 mDrawCursorRing = false; 3536 } 3537 mGotKeyDown = false; 3538 mShiftIsPressed = false; 3539 if (mNativeClass != 0) { 3540 nativeRecordButtons(false, false, true); 3541 } 3542 setFocusControllerInactive(); 3543 } 3544 invalidate(); 3545 super.onWindowFocusChanged(hasWindowFocus); 3546 } 3547 3548 /* 3549 * Pass a message to WebCore Thread, telling the WebCore::Page's 3550 * FocusController to be "inactive" so that it will 3551 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3552 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3553 */ 3554 /* package */ void setFocusControllerInactive() { 3555 // Do not need to also check whether mWebViewCore is null, because 3556 // mNativeClass is only set if mWebViewCore is non null 3557 if (mNativeClass == 0) return; 3558 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 3559 } 3560 3561 @Override 3562 protected void onFocusChanged(boolean focused, int direction, 3563 Rect previouslyFocusedRect) { 3564 if (DebugFlags.WEB_VIEW) { 3565 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3566 } 3567 if (focused) { 3568 // When we regain focus, if we have window focus, resume drawing 3569 // the cursor ring 3570 if (hasWindowFocus()) { 3571 mDrawCursorRing = true; 3572 if (mNativeClass != 0) { 3573 nativeRecordButtons(true, false, true); 3574 } 3575 //} else { 3576 // The WebView has gained focus while we do not have 3577 // windowfocus. When our window lost focus, we should have 3578 // called nativeRecordButtons(false...) 3579 } 3580 } else { 3581 // When we lost focus, unless focus went to the TextView (which is 3582 // true if we are in editing mode), stop drawing the cursor ring. 3583 if (!inEditingMode()) { 3584 mDrawCursorRing = false; 3585 if (mNativeClass != 0) { 3586 nativeRecordButtons(false, false, true); 3587 } 3588 setFocusControllerInactive(); 3589 } 3590 mGotKeyDown = false; 3591 } 3592 3593 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3594 } 3595 3596 @Override 3597 protected void onSizeChanged(int w, int h, int ow, int oh) { 3598 super.onSizeChanged(w, h, ow, oh); 3599 // Center zooming to the center of the screen. 3600 if (mZoomScale == 0) { // unless we're already zooming 3601 mZoomCenterX = getViewWidth() * .5f; 3602 mZoomCenterY = getViewHeight() * .5f; 3603 } 3604 3605 // update mMinZoomScale if the minimum zoom scale is not fixed 3606 if (!mMinZoomScaleFixed) { 3607 // when change from narrow screen to wide screen, the new viewWidth 3608 // can be wider than the old content width. We limit the minimum 3609 // scale to 1.0f. The proper minimum scale will be calculated when 3610 // the new picture shows up. 3611 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 3612 / (mDrawHistory ? mHistoryPicture.getWidth() 3613 : mZoomOverviewWidth)); 3614 } 3615 3616 // we always force, in case our height changed, in which case we still 3617 // want to send the notification over to webkit 3618 setNewZoomScale(mActualScale, true); 3619 } 3620 3621 @Override 3622 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 3623 super.onScrollChanged(l, t, oldl, oldt); 3624 3625 sendOurVisibleRect(); 3626 } 3627 3628 3629 @Override 3630 public boolean dispatchKeyEvent(KeyEvent event) { 3631 boolean dispatch = true; 3632 3633 if (!inEditingMode()) { 3634 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3635 mGotKeyDown = true; 3636 } else { 3637 if (!mGotKeyDown) { 3638 /* 3639 * We got a key up for which we were not the recipient of 3640 * the original key down. Don't give it to the view. 3641 */ 3642 dispatch = false; 3643 } 3644 mGotKeyDown = false; 3645 } 3646 } 3647 3648 if (dispatch) { 3649 return super.dispatchKeyEvent(event); 3650 } else { 3651 // We didn't dispatch, so let something else handle the key 3652 return false; 3653 } 3654 } 3655 3656 // Here are the snap align logic: 3657 // 1. If it starts nearly horizontally or vertically, snap align; 3658 // 2. If there is a dramitic direction change, let it go; 3659 // 3. If there is a same direction back and forth, lock it. 3660 3661 // adjustable parameters 3662 private int mMinLockSnapReverseDistance; 3663 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 3664 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 3665 3666 @Override 3667 public boolean onTouchEvent(MotionEvent ev) { 3668 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 3669 return false; 3670 } 3671 3672 if (DebugFlags.WEB_VIEW) { 3673 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 3674 + mTouchMode); 3675 } 3676 3677 int action = ev.getAction(); 3678 float x = ev.getX(); 3679 float y = ev.getY(); 3680 long eventTime = ev.getEventTime(); 3681 3682 // Due to the touch screen edge effect, a touch closer to the edge 3683 // always snapped to the edge. As getViewWidth() can be different from 3684 // getWidth() due to the scrollbar, adjusting the point to match 3685 // getViewWidth(). Same applied to the height. 3686 if (x > getViewWidth() - 1) { 3687 x = getViewWidth() - 1; 3688 } 3689 if (y > getViewHeightWithTitle() - 1) { 3690 y = getViewHeightWithTitle() - 1; 3691 } 3692 3693 // pass the touch events from UI thread to WebCore thread 3694 if (mForwardTouchEvents && (action != MotionEvent.ACTION_MOVE 3695 || eventTime - mLastSentTouchTime > TOUCH_SENT_INTERVAL)) { 3696 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 3697 ted.mAction = action; 3698 ted.mX = viewToContentX((int) x + mScrollX); 3699 ted.mY = viewToContentY((int) y + mScrollY); 3700 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 3701 mLastSentTouchTime = eventTime; 3702 } 3703 3704 int deltaX = (int) (mLastTouchX - x); 3705 int deltaY = (int) (mLastTouchY - y); 3706 3707 switch (action) { 3708 case MotionEvent.ACTION_DOWN: { 3709 mPreventDrag = PREVENT_DRAG_NO; 3710 if (!mScroller.isFinished()) { 3711 // stop the current scroll animation, but if this is 3712 // the start of a fling, allow it to add to the current 3713 // fling's velocity 3714 mScroller.abortAnimation(); 3715 mTouchMode = TOUCH_DRAG_START_MODE; 3716 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 3717 } else if (mShiftIsPressed) { 3718 mSelectX = mScrollX + (int) x; 3719 mSelectY = mScrollY + (int) y; 3720 mTouchMode = TOUCH_SELECT_MODE; 3721 if (DebugFlags.WEB_VIEW) { 3722 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 3723 } 3724 nativeMoveSelection(viewToContentX(mSelectX), 3725 viewToContentY(mSelectY), false); 3726 mTouchSelection = mExtendSelection = true; 3727 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 3728 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 3729 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 3730 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 3731 } else { 3732 // commit the short press action for the previous tap 3733 doShortPress(); 3734 // continue, mTouchMode should be still TOUCH_INIT_MODE 3735 } 3736 } else { 3737 mTouchMode = TOUCH_INIT_MODE; 3738 mPreventDrag = mForwardTouchEvents ? PREVENT_DRAG_MAYBE_YES 3739 : PREVENT_DRAG_NO; 3740 mWebViewCore.sendMessage( 3741 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 3742 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 3743 EventLog.writeEvent(EVENT_LOG_DOUBLE_TAP_DURATION, 3744 (eventTime - mLastTouchUpTime), eventTime); 3745 } 3746 } 3747 // Trigger the link 3748 if (mTouchMode == TOUCH_INIT_MODE 3749 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 3750 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3751 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 3752 } 3753 // Remember where the motion event started 3754 mLastTouchX = x; 3755 mLastTouchY = y; 3756 mLastTouchTime = eventTime; 3757 mVelocityTracker = VelocityTracker.obtain(); 3758 mSnapScrollMode = SNAP_NONE; 3759 break; 3760 } 3761 case MotionEvent.ACTION_MOVE: { 3762 if (mTouchMode == TOUCH_DONE_MODE) { 3763 // no dragging during scroll zoom animation 3764 break; 3765 } 3766 mVelocityTracker.addMovement(ev); 3767 3768 if (mTouchMode != TOUCH_DRAG_MODE) { 3769 if (mTouchMode == TOUCH_SELECT_MODE) { 3770 mSelectX = mScrollX + (int) x; 3771 mSelectY = mScrollY + (int) y; 3772 if (DebugFlags.WEB_VIEW) { 3773 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 3774 } 3775 nativeMoveSelection(viewToContentX(mSelectX), 3776 viewToContentY(mSelectY), true); 3777 invalidate(); 3778 break; 3779 } 3780 if ((deltaX * deltaX + deltaY * deltaY) < mTouchSlopSquare) { 3781 break; 3782 } 3783 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 3784 // track mLastTouchTime as we may need to do fling at 3785 // ACTION_UP 3786 mLastTouchTime = eventTime; 3787 break; 3788 } 3789 if (mTouchMode == TOUCH_SHORTPRESS_MODE 3790 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3791 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3792 } else if (mTouchMode == TOUCH_INIT_MODE 3793 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 3794 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3795 } 3796 3797 // if it starts nearly horizontal or vertical, enforce it 3798 int ax = Math.abs(deltaX); 3799 int ay = Math.abs(deltaY); 3800 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 3801 mSnapScrollMode = SNAP_X; 3802 mSnapPositive = deltaX > 0; 3803 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 3804 mSnapScrollMode = SNAP_Y; 3805 mSnapPositive = deltaY > 0; 3806 } 3807 3808 mTouchMode = TOUCH_DRAG_MODE; 3809 WebViewCore.pauseUpdate(mWebViewCore); 3810 if (!mDragFromTextInput) { 3811 nativeHideCursor(); 3812 } 3813 WebSettings settings = getSettings(); 3814 if (settings.supportZoom() 3815 && settings.getBuiltInZoomControls() 3816 && !mZoomButtonsController.isVisible() 3817 && mMinZoomScale < mMaxZoomScale) { 3818 mZoomButtonsController.setVisible(true); 3819 int count = settings.getDoubleTapToastCount(); 3820 if (mInZoomOverview && count > 0) { 3821 settings.setDoubleTapToastCount(--count); 3822 Toast.makeText(mContext, 3823 com.android.internal.R.string.double_tap_toast, 3824 Toast.LENGTH_LONG).show(); 3825 } 3826 } 3827 } 3828 3829 // do pan 3830 int newScrollX = pinLocX(mScrollX + deltaX); 3831 deltaX = newScrollX - mScrollX; 3832 int newScrollY = pinLocY(mScrollY + deltaY); 3833 deltaY = newScrollY - mScrollY; 3834 boolean done = false; 3835 if (deltaX == 0 && deltaY == 0) { 3836 done = true; 3837 } else { 3838 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 3839 int ax = Math.abs(deltaX); 3840 int ay = Math.abs(deltaY); 3841 if (mSnapScrollMode == SNAP_X) { 3842 // radical change means getting out of snap mode 3843 if (ay > MAX_SLOPE_FOR_DIAG * ax 3844 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3845 mSnapScrollMode = SNAP_NONE; 3846 } 3847 // reverse direction means lock in the snap mode 3848 if ((ax > MAX_SLOPE_FOR_DIAG * ay) && 3849 ((mSnapPositive && 3850 deltaX < -mMinLockSnapReverseDistance) 3851 || (!mSnapPositive && 3852 deltaX > mMinLockSnapReverseDistance))) { 3853 mSnapScrollMode = SNAP_X_LOCK; 3854 } 3855 } else { 3856 // radical change means getting out of snap mode 3857 if ((ax > MAX_SLOPE_FOR_DIAG * ay) 3858 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3859 mSnapScrollMode = SNAP_NONE; 3860 } 3861 // reverse direction means lock in the snap mode 3862 if ((ay > MAX_SLOPE_FOR_DIAG * ax) && 3863 ((mSnapPositive && 3864 deltaY < -mMinLockSnapReverseDistance) 3865 || (!mSnapPositive && 3866 deltaY > mMinLockSnapReverseDistance))) { 3867 mSnapScrollMode = SNAP_Y_LOCK; 3868 } 3869 } 3870 } 3871 3872 if (mSnapScrollMode == SNAP_X 3873 || mSnapScrollMode == SNAP_X_LOCK) { 3874 if (deltaX == 0) { 3875 // keep the scrollbar on the screen even there is no 3876 // scroll 3877 awakenScrollBars(ViewConfiguration 3878 .getScrollDefaultDelay(), false); 3879 } else { 3880 scrollBy(deltaX, 0); 3881 } 3882 mLastTouchX = x; 3883 } else if (mSnapScrollMode == SNAP_Y 3884 || mSnapScrollMode == SNAP_Y_LOCK) { 3885 if (deltaY == 0) { 3886 // keep the scrollbar on the screen even there is no 3887 // scroll 3888 awakenScrollBars(ViewConfiguration 3889 .getScrollDefaultDelay(), false); 3890 } else { 3891 scrollBy(0, deltaY); 3892 } 3893 mLastTouchY = y; 3894 } else { 3895 scrollBy(deltaX, deltaY); 3896 mLastTouchX = x; 3897 mLastTouchY = y; 3898 } 3899 mLastTouchTime = eventTime; 3900 mUserScroll = true; 3901 } 3902 3903 if (!getSettings().getBuiltInZoomControls()) { 3904 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 3905 if (mZoomControls != null && showPlusMinus) { 3906 if (mZoomControls.getVisibility() == View.VISIBLE) { 3907 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 3908 } else { 3909 mZoomControls.show(showPlusMinus, false); 3910 } 3911 mPrivateHandler.postDelayed(mZoomControlRunnable, 3912 ZOOM_CONTROLS_TIMEOUT); 3913 } 3914 } 3915 3916 if (done) { 3917 // keep the scrollbar on the screen even there is no scroll 3918 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 3919 false); 3920 // return false to indicate that we can't pan out of the 3921 // view space 3922 return false; 3923 } 3924 break; 3925 } 3926 case MotionEvent.ACTION_UP: { 3927 mLastTouchUpTime = eventTime; 3928 switch (mTouchMode) { 3929 case TOUCH_DOUBLE_TAP_MODE: // double tap 3930 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3931 mTouchMode = TOUCH_DONE_MODE; 3932 doDoubleTap(); 3933 break; 3934 case TOUCH_SELECT_MODE: 3935 commitCopy(); 3936 mTouchSelection = false; 3937 break; 3938 case TOUCH_INIT_MODE: // tap 3939 case TOUCH_SHORTPRESS_START_MODE: 3940 case TOUCH_SHORTPRESS_MODE: 3941 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3942 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3943 if ((deltaX * deltaX + deltaY * deltaY) > mTouchSlopSquare) { 3944 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 3945 " WebCore's response for touch down."); 3946 if (computeHorizontalScrollExtent() < computeHorizontalScrollRange() 3947 || computeVerticalScrollExtent() < computeVerticalScrollRange()) { 3948 // we will not rewrite drag code here, but we 3949 // will try fling if it applies. 3950 WebViewCore.pauseUpdate(mWebViewCore); 3951 // fall through to TOUCH_DRAG_MODE 3952 } else { 3953 break; 3954 } 3955 } else { 3956 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 3957 // if mPreventDrag is not confirmed, treat it as 3958 // no so that it won't block tap or double tap. 3959 mPreventDrag = PREVENT_DRAG_NO; 3960 } 3961 if (mPreventDrag == PREVENT_DRAG_NO) { 3962 if (mTouchMode == TOUCH_INIT_MODE) { 3963 mPrivateHandler.sendMessageDelayed( 3964 mPrivateHandler.obtainMessage( 3965 RELEASE_SINGLE_TAP), 3966 ViewConfiguration.getDoubleTapTimeout()); 3967 } else { 3968 mTouchMode = TOUCH_DONE_MODE; 3969 doShortPress(); 3970 } 3971 } 3972 break; 3973 } 3974 case TOUCH_DRAG_MODE: 3975 // redraw in high-quality, as we're done dragging 3976 invalidate(); 3977 // if the user waits a while w/o moving before the 3978 // up, we don't want to do a fling 3979 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 3980 mVelocityTracker.addMovement(ev); 3981 doFling(); 3982 break; 3983 } 3984 mLastVelocity = 0; 3985 WebViewCore.resumeUpdate(mWebViewCore); 3986 break; 3987 case TOUCH_DRAG_START_MODE: 3988 case TOUCH_DONE_MODE: 3989 // do nothing 3990 break; 3991 } 3992 // we also use mVelocityTracker == null to tell us that we are 3993 // not "moving around", so we can take the slower/prettier 3994 // mode in the drawing code 3995 if (mVelocityTracker != null) { 3996 mVelocityTracker.recycle(); 3997 mVelocityTracker = null; 3998 } 3999 break; 4000 } 4001 case MotionEvent.ACTION_CANCEL: { 4002 // we also use mVelocityTracker == null to tell us that we are 4003 // not "moving around", so we can take the slower/prettier 4004 // mode in the drawing code 4005 if (mVelocityTracker != null) { 4006 mVelocityTracker.recycle(); 4007 mVelocityTracker = null; 4008 } 4009 if (mTouchMode == TOUCH_DRAG_MODE) { 4010 WebViewCore.resumeUpdate(mWebViewCore); 4011 } 4012 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4013 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4014 mTouchMode = TOUCH_DONE_MODE; 4015 nativeHideCursor(); 4016 break; 4017 } 4018 } 4019 return true; 4020 } 4021 4022 private long mTrackballFirstTime = 0; 4023 private long mTrackballLastTime = 0; 4024 private float mTrackballRemainsX = 0.0f; 4025 private float mTrackballRemainsY = 0.0f; 4026 private int mTrackballXMove = 0; 4027 private int mTrackballYMove = 0; 4028 private boolean mExtendSelection = false; 4029 private boolean mTouchSelection = false; 4030 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4031 private static final int TRACKBALL_TIMEOUT = 200; 4032 private static final int TRACKBALL_WAIT = 100; 4033 private static final int TRACKBALL_SCALE = 400; 4034 private static final int TRACKBALL_SCROLL_COUNT = 5; 4035 private static final int TRACKBALL_MOVE_COUNT = 10; 4036 private static final int TRACKBALL_MULTIPLIER = 3; 4037 private static final int SELECT_CURSOR_OFFSET = 16; 4038 private int mSelectX = 0; 4039 private int mSelectY = 0; 4040 private boolean mShiftIsPressed = false; 4041 private boolean mTrackballDown = false; 4042 private long mTrackballUpTime = 0; 4043 private long mLastCursorTime = 0; 4044 private Rect mLastCursorBounds; 4045 4046 // Set by default; BrowserActivity clears to interpret trackball data 4047 // directly for movement. Currently, the framework only passes 4048 // arrow key events, not trackball events, from one child to the next 4049 private boolean mMapTrackballToArrowKeys = true; 4050 4051 public void setMapTrackballToArrowKeys(boolean setMap) { 4052 mMapTrackballToArrowKeys = setMap; 4053 } 4054 4055 void resetTrackballTime() { 4056 mTrackballLastTime = 0; 4057 } 4058 4059 @Override 4060 public boolean onTrackballEvent(MotionEvent ev) { 4061 long time = ev.getEventTime(); 4062 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4063 if (ev.getY() > 0) pageDown(true); 4064 if (ev.getY() < 0) pageUp(true); 4065 return true; 4066 } 4067 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4068 if (mShiftIsPressed) { 4069 return true; // discard press if copy in progress 4070 } 4071 mTrackballDown = true; 4072 if (mNativeClass == 0) { 4073 return false; 4074 } 4075 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4076 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4077 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4078 nativeSelectBestAt(mLastCursorBounds); 4079 } 4080 if (DebugFlags.WEB_VIEW) { 4081 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4082 + " time=" + time 4083 + " mLastCursorTime=" + mLastCursorTime); 4084 } 4085 if (isInTouchMode()) requestFocusFromTouch(); 4086 return false; // let common code in onKeyDown at it 4087 } 4088 if (ev.getAction() == MotionEvent.ACTION_UP) { 4089 // LONG_PRESS_CENTER is set in common onKeyDown 4090 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4091 mTrackballDown = false; 4092 mTrackballUpTime = time; 4093 if (mShiftIsPressed) { 4094 if (mExtendSelection) { 4095 commitCopy(); 4096 } else { 4097 mExtendSelection = true; 4098 } 4099 return true; // discard press if copy in progress 4100 } 4101 if (DebugFlags.WEB_VIEW) { 4102 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4103 + " time=" + time 4104 ); 4105 } 4106 return false; // let common code in onKeyUp at it 4107 } 4108 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4109 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4110 return false; 4111 } 4112 if (mTrackballDown) { 4113 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4114 return true; // discard move if trackball is down 4115 } 4116 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4117 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4118 return true; 4119 } 4120 // TODO: alternatively we can do panning as touch does 4121 switchOutDrawHistory(); 4122 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4123 if (DebugFlags.WEB_VIEW) { 4124 Log.v(LOGTAG, "onTrackballEvent time=" 4125 + time + " last=" + mTrackballLastTime); 4126 } 4127 mTrackballFirstTime = time; 4128 mTrackballXMove = mTrackballYMove = 0; 4129 } 4130 mTrackballLastTime = time; 4131 if (DebugFlags.WEB_VIEW) { 4132 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4133 } 4134 mTrackballRemainsX += ev.getX(); 4135 mTrackballRemainsY += ev.getY(); 4136 doTrackball(time); 4137 return true; 4138 } 4139 4140 void moveSelection(float xRate, float yRate) { 4141 if (mNativeClass == 0) 4142 return; 4143 int width = getViewWidth(); 4144 int height = getViewHeight(); 4145 mSelectX += scaleTrackballX(xRate, width); 4146 mSelectY += scaleTrackballY(yRate, height); 4147 int maxX = width + mScrollX; 4148 int maxY = height + mScrollY; 4149 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 4150 , mSelectX)); 4151 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 4152 , mSelectY)); 4153 if (DebugFlags.WEB_VIEW) { 4154 Log.v(LOGTAG, "moveSelection" 4155 + " mSelectX=" + mSelectX 4156 + " mSelectY=" + mSelectY 4157 + " mScrollX=" + mScrollX 4158 + " mScrollY=" + mScrollY 4159 + " xRate=" + xRate 4160 + " yRate=" + yRate 4161 ); 4162 } 4163 nativeMoveSelection(viewToContentX(mSelectX), 4164 viewToContentY(mSelectY), mExtendSelection); 4165 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 4166 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4167 : 0; 4168 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 4169 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4170 : 0; 4171 pinScrollBy(scrollX, scrollY, true, 0); 4172 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 4173 requestRectangleOnScreen(select); 4174 invalidate(); 4175 } 4176 4177 private int scaleTrackballX(float xRate, int width) { 4178 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4179 int nextXMove = xMove; 4180 if (xMove > 0) { 4181 if (xMove > mTrackballXMove) { 4182 xMove -= mTrackballXMove; 4183 } 4184 } else if (xMove < mTrackballXMove) { 4185 xMove -= mTrackballXMove; 4186 } 4187 mTrackballXMove = nextXMove; 4188 return xMove; 4189 } 4190 4191 private int scaleTrackballY(float yRate, int height) { 4192 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 4193 int nextYMove = yMove; 4194 if (yMove > 0) { 4195 if (yMove > mTrackballYMove) { 4196 yMove -= mTrackballYMove; 4197 } 4198 } else if (yMove < mTrackballYMove) { 4199 yMove -= mTrackballYMove; 4200 } 4201 mTrackballYMove = nextYMove; 4202 return yMove; 4203 } 4204 4205 private int keyCodeToSoundsEffect(int keyCode) { 4206 switch(keyCode) { 4207 case KeyEvent.KEYCODE_DPAD_UP: 4208 return SoundEffectConstants.NAVIGATION_UP; 4209 case KeyEvent.KEYCODE_DPAD_RIGHT: 4210 return SoundEffectConstants.NAVIGATION_RIGHT; 4211 case KeyEvent.KEYCODE_DPAD_DOWN: 4212 return SoundEffectConstants.NAVIGATION_DOWN; 4213 case KeyEvent.KEYCODE_DPAD_LEFT: 4214 return SoundEffectConstants.NAVIGATION_LEFT; 4215 } 4216 throw new IllegalArgumentException("keyCode must be one of " + 4217 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 4218 "KEYCODE_DPAD_LEFT}."); 4219 } 4220 4221 private void doTrackball(long time) { 4222 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 4223 if (elapsed == 0) { 4224 elapsed = TRACKBALL_TIMEOUT; 4225 } 4226 float xRate = mTrackballRemainsX * 1000 / elapsed; 4227 float yRate = mTrackballRemainsY * 1000 / elapsed; 4228 if (mShiftIsPressed) { 4229 moveSelection(xRate, yRate); 4230 mTrackballRemainsX = mTrackballRemainsY = 0; 4231 return; 4232 } 4233 float ax = Math.abs(xRate); 4234 float ay = Math.abs(yRate); 4235 float maxA = Math.max(ax, ay); 4236 if (DebugFlags.WEB_VIEW) { 4237 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 4238 + " xRate=" + xRate 4239 + " yRate=" + yRate 4240 + " mTrackballRemainsX=" + mTrackballRemainsX 4241 + " mTrackballRemainsY=" + mTrackballRemainsY); 4242 } 4243 int width = mContentWidth - getViewWidth(); 4244 int height = mContentHeight - getViewHeight(); 4245 if (width < 0) width = 0; 4246 if (height < 0) height = 0; 4247 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 4248 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 4249 maxA = Math.max(ax, ay); 4250 int count = Math.max(0, (int) maxA); 4251 int oldScrollX = mScrollX; 4252 int oldScrollY = mScrollY; 4253 if (count > 0) { 4254 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 4255 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 4256 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 4257 KeyEvent.KEYCODE_DPAD_RIGHT; 4258 count = Math.min(count, TRACKBALL_MOVE_COUNT); 4259 if (DebugFlags.WEB_VIEW) { 4260 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 4261 + " count=" + count 4262 + " mTrackballRemainsX=" + mTrackballRemainsX 4263 + " mTrackballRemainsY=" + mTrackballRemainsY); 4264 } 4265 if (navHandledKey(selectKeyCode, count, false, time, false)) { 4266 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 4267 } 4268 mTrackballRemainsX = mTrackballRemainsY = 0; 4269 } 4270 if (count >= TRACKBALL_SCROLL_COUNT) { 4271 int xMove = scaleTrackballX(xRate, width); 4272 int yMove = scaleTrackballY(yRate, height); 4273 if (DebugFlags.WEB_VIEW) { 4274 Log.v(LOGTAG, "doTrackball pinScrollBy" 4275 + " count=" + count 4276 + " xMove=" + xMove + " yMove=" + yMove 4277 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 4278 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 4279 ); 4280 } 4281 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 4282 xMove = 0; 4283 } 4284 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 4285 yMove = 0; 4286 } 4287 if (xMove != 0 || yMove != 0) { 4288 pinScrollBy(xMove, yMove, true, 0); 4289 } 4290 mUserScroll = true; 4291 } 4292 } 4293 4294 private int computeMaxScrollY() { 4295 int maxContentH = computeVerticalScrollRange() + getTitleHeight(); 4296 return Math.max(maxContentH - getHeight(), getTitleHeight()); 4297 } 4298 4299 public void flingScroll(int vx, int vy) { 4300 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4301 int maxY = computeMaxScrollY(); 4302 4303 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 4304 invalidate(); 4305 } 4306 4307 private void doFling() { 4308 if (mVelocityTracker == null) { 4309 return; 4310 } 4311 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4312 int maxY = computeMaxScrollY(); 4313 4314 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 4315 int vx = (int) mVelocityTracker.getXVelocity(); 4316 int vy = (int) mVelocityTracker.getYVelocity(); 4317 4318 if (mSnapScrollMode != SNAP_NONE) { 4319 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_X_LOCK) { 4320 vy = 0; 4321 } else { 4322 vx = 0; 4323 } 4324 } 4325 4326 if (true /* EMG release: make our fling more like Maps' */) { 4327 // maps cuts their velocity in half 4328 vx = vx * 3 / 4; 4329 vy = vy * 3 / 4; 4330 } 4331 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 4332 WebViewCore.resumeUpdate(mWebViewCore); 4333 return; 4334 } 4335 float currentVelocity = mScroller.getCurrVelocity(); 4336 if (mLastVelocity > 0 && currentVelocity > 0) { 4337 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 4338 - Math.atan2(vy, vx))); 4339 final float circle = (float) (Math.PI) * 2.0f; 4340 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 4341 vx += currentVelocity * mLastVelX / mLastVelocity; 4342 vy += currentVelocity * mLastVelY / mLastVelocity; 4343 if (DebugFlags.WEB_VIEW) { 4344 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 4345 } 4346 } else if (DebugFlags.WEB_VIEW) { 4347 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 4348 } 4349 } else if (DebugFlags.WEB_VIEW) { 4350 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 4351 + " current=" + currentVelocity 4352 + " vx=" + vx + " vy=" + vy 4353 + " maxX=" + maxX + " maxY=" + maxY 4354 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 4355 } 4356 mLastVelX = vx; 4357 mLastVelY = vy; 4358 mLastVelocity = (float) Math.hypot(vx, vy); 4359 4360 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 4361 // TODO: duration is calculated based on velocity, if the range is 4362 // small, the animation will stop before duration is up. We may 4363 // want to calculate how long the animation is going to run to precisely 4364 // resume the webcore update. 4365 final int time = mScroller.getDuration(); 4366 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_UPDATE, time); 4367 awakenScrollBars(time); 4368 invalidate(); 4369 } 4370 4371 private boolean zoomWithPreview(float scale) { 4372 float oldScale = mActualScale; 4373 mInitialScrollX = mScrollX; 4374 mInitialScrollY = mScrollY; 4375 4376 // snap to DEFAULT_SCALE if it is close 4377 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 4378 scale = mDefaultScale; 4379 } 4380 4381 setNewZoomScale(scale, false); 4382 4383 if (oldScale != mActualScale) { 4384 // use mZoomPickerScale to see zoom preview first 4385 mZoomStart = SystemClock.uptimeMillis(); 4386 mInvInitialZoomScale = 1.0f / oldScale; 4387 mInvFinalZoomScale = 1.0f / mActualScale; 4388 mZoomScale = mActualScale; 4389 if (!mInZoomOverview) { 4390 mLastScale = scale; 4391 } 4392 invalidate(); 4393 return true; 4394 } else { 4395 return false; 4396 } 4397 } 4398 4399 /** 4400 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 4401 * in charge of installing this view to the view hierarchy. This view will 4402 * become visible when the user starts scrolling via touch and fade away if 4403 * the user does not interact with it. 4404 * <p/> 4405 * API version 3 introduces a built-in zoom mechanism that is shown 4406 * automatically by the MapView. This is the preferred approach for 4407 * showing the zoom UI. 4408 * 4409 * @deprecated The built-in zoom mechanism is preferred, see 4410 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 4411 */ 4412 @Deprecated 4413 public View getZoomControls() { 4414 if (!getSettings().supportZoom()) { 4415 Log.w(LOGTAG, "This WebView doesn't support zoom."); 4416 return null; 4417 } 4418 if (mZoomControls == null) { 4419 mZoomControls = createZoomControls(); 4420 4421 /* 4422 * need to be set to VISIBLE first so that getMeasuredHeight() in 4423 * {@link #onSizeChanged()} can return the measured value for proper 4424 * layout. 4425 */ 4426 mZoomControls.setVisibility(View.VISIBLE); 4427 mZoomControlRunnable = new Runnable() { 4428 public void run() { 4429 4430 /* Don't dismiss the controls if the user has 4431 * focus on them. Wait and check again later. 4432 */ 4433 if (!mZoomControls.hasFocus()) { 4434 mZoomControls.hide(); 4435 } else { 4436 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4437 mPrivateHandler.postDelayed(mZoomControlRunnable, 4438 ZOOM_CONTROLS_TIMEOUT); 4439 } 4440 } 4441 }; 4442 } 4443 return mZoomControls; 4444 } 4445 4446 private ExtendedZoomControls createZoomControls() { 4447 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 4448 , null); 4449 zoomControls.setOnZoomInClickListener(new OnClickListener() { 4450 public void onClick(View v) { 4451 // reset time out 4452 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4453 mPrivateHandler.postDelayed(mZoomControlRunnable, 4454 ZOOM_CONTROLS_TIMEOUT); 4455 zoomIn(); 4456 } 4457 }); 4458 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 4459 public void onClick(View v) { 4460 // reset time out 4461 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4462 mPrivateHandler.postDelayed(mZoomControlRunnable, 4463 ZOOM_CONTROLS_TIMEOUT); 4464 zoomOut(); 4465 } 4466 }); 4467 return zoomControls; 4468 } 4469 4470 /** 4471 * Gets the {@link ZoomButtonsController} which can be used to add 4472 * additional buttons to the zoom controls window. 4473 * 4474 * @return The instance of {@link ZoomButtonsController} used by this class, 4475 * or null if it is unavailable. 4476 * @hide 4477 */ 4478 public ZoomButtonsController getZoomButtonsController() { 4479 return mZoomButtonsController; 4480 } 4481 4482 /** 4483 * Perform zoom in in the webview 4484 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 4485 */ 4486 public boolean zoomIn() { 4487 // TODO: alternatively we can disallow this during draw history mode 4488 switchOutDrawHistory(); 4489 // Center zooming to the center of the screen. 4490 if (mInZoomOverview) { 4491 // if in overview mode, bring it back to normal mode 4492 mLastTouchX = getViewWidth() * .5f; 4493 mLastTouchY = getViewHeight() * .5f; 4494 doDoubleTap(); 4495 return true; 4496 } else { 4497 mZoomCenterX = getViewWidth() * .5f; 4498 mZoomCenterY = getViewHeight() * .5f; 4499 return zoomWithPreview(mActualScale * 1.25f); 4500 } 4501 } 4502 4503 /** 4504 * Perform zoom out in the webview 4505 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 4506 */ 4507 public boolean zoomOut() { 4508 // TODO: alternatively we can disallow this during draw history mode 4509 switchOutDrawHistory(); 4510 float scale = mActualScale * 0.8f; 4511 if (scale < (mMinZoomScale + 0.1f) 4512 && mWebViewCore.getSettings().getUseWideViewPort()) { 4513 // when zoom out to min scale, switch to overview mode 4514 doDoubleTap(); 4515 return true; 4516 } else { 4517 // Center zooming to the center of the screen. 4518 mZoomCenterX = getViewWidth() * .5f; 4519 mZoomCenterY = getViewHeight() * .5f; 4520 return zoomWithPreview(scale); 4521 } 4522 } 4523 4524 private void updateSelection() { 4525 if (mNativeClass == 0) { 4526 return; 4527 } 4528 // mLastTouchX and mLastTouchY are the point in the current viewport 4529 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 4530 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 4531 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 4532 contentX + mNavSlop, contentY + mNavSlop); 4533 nativeSelectBestAt(rect); 4534 } 4535 4536 /** 4537 * Scroll the focused text field/area to match the WebTextView 4538 * @param xPercent New x position of the WebTextView from 0 to 1. 4539 * @param y New y position of the WebTextView in view coordinates 4540 */ 4541 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 4542 if (!inEditingMode() || mWebViewCore == null) { 4543 return; 4544 } 4545 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 4546 // Since this position is relative to the top of the text input 4547 // field, we do not need to take the title bar's height into 4548 // consideration. 4549 viewToContentDimension(y), 4550 new Float(xPercent)); 4551 } 4552 4553 /** 4554 * Set our starting point and time for a drag from the WebTextView. 4555 */ 4556 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 4557 if (!inEditingMode()) { 4558 return; 4559 } 4560 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 4561 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 4562 mLastTouchTime = eventTime; 4563 if (!mScroller.isFinished()) { 4564 abortAnimation(); 4565 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 4566 } 4567 mSnapScrollMode = SNAP_NONE; 4568 mVelocityTracker = VelocityTracker.obtain(); 4569 mTouchMode = TOUCH_DRAG_START_MODE; 4570 } 4571 4572 /** 4573 * Given a motion event from the WebTextView, set its location to our 4574 * coordinates, and handle the event. 4575 */ 4576 /*package*/ boolean textFieldDrag(MotionEvent event) { 4577 if (!inEditingMode()) { 4578 return false; 4579 } 4580 mDragFromTextInput = true; 4581 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 4582 (float) (mWebTextView.getTop() - mScrollY)); 4583 boolean result = onTouchEvent(event); 4584 mDragFromTextInput = false; 4585 return result; 4586 } 4587 4588 /** 4589 * Do a touch up from a WebTextView. This will be handled by webkit to 4590 * change the selection. 4591 * @param event MotionEvent in the WebTextView's coordinates. 4592 */ 4593 /*package*/ void touchUpOnTextField(MotionEvent event) { 4594 if (!inEditingMode()) { 4595 return; 4596 } 4597 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 4598 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 4599 // In case the soft keyboard has been dismissed, bring it back up. 4600 InputMethodManager.getInstance(getContext()).showSoftInput(mWebTextView, 4601 0); 4602 if (nativeFocusNodePointer() != nativeCursorNodePointer()) { 4603 nativeMotionUp(x, y, mNavSlop); 4604 } 4605 nativeTextInputMotionUp(x, y); 4606 } 4607 4608 /*package*/ void shortPressOnTextField() { 4609 if (inEditingMode()) { 4610 View v = mWebTextView; 4611 int x = viewToContentX((v.getLeft() + v.getRight()) >> 1); 4612 int y = viewToContentY((v.getTop() + v.getBottom()) >> 1); 4613 nativeTextInputMotionUp(x, y); 4614 } 4615 } 4616 4617 private void doShortPress() { 4618 if (mNativeClass == 0) { 4619 return; 4620 } 4621 switchOutDrawHistory(); 4622 // mLastTouchX and mLastTouchY are the point in the current viewport 4623 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 4624 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 4625 if (nativeMotionUp(contentX, contentY, mNavSlop)) { 4626 if (mLogEvent) { 4627 Checkin.updateStats(mContext.getContentResolver(), 4628 Checkin.Stats.Tag.BROWSER_SNAP_CENTER, 1, 0.0); 4629 } 4630 } 4631 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 4632 playSoundEffect(SoundEffectConstants.CLICK); 4633 } 4634 } 4635 4636 private void doDoubleTap() { 4637 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 4638 return; 4639 } 4640 mZoomCenterX = mLastTouchX; 4641 mZoomCenterY = mLastTouchY; 4642 mInZoomOverview = !mInZoomOverview; 4643 // remove the zoom control after double tap 4644 WebSettings settings = getSettings(); 4645 if (settings.getBuiltInZoomControls()) { 4646 if (mZoomButtonsController.isVisible()) { 4647 mZoomButtonsController.setVisible(false); 4648 } 4649 } else { 4650 if (mZoomControlRunnable != null) { 4651 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4652 } 4653 if (mZoomControls != null) { 4654 mZoomControls.hide(); 4655 } 4656 } 4657 settings.setDoubleTapToastCount(0); 4658 if (mInZoomOverview) { 4659 // Force the titlebar fully reveal in overview mode 4660 if (mScrollY < getTitleHeight()) mScrollY = 0; 4661 zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth); 4662 } else { 4663 // mLastTouchX and mLastTouchY are the point in the current viewport 4664 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 4665 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 4666 int left = nativeGetBlockLeftEdge(contentX, contentY, mActualScale); 4667 if (left != NO_LEFTEDGE) { 4668 // add a 5pt padding to the left edge. Re-calculate the zoom 4669 // center so that the new scroll x will be on the left edge. 4670 mZoomCenterX = left < 5 ? 0 : (left - 5) * mLastScale 4671 * mActualScale / (mLastScale - mActualScale); 4672 } 4673 zoomWithPreview(mLastScale); 4674 } 4675 } 4676 4677 // Called by JNI to handle a touch on a node representing an email address, 4678 // address, or phone number 4679 private void overrideLoading(String url) { 4680 mCallbackProxy.uiOverrideUrlLoading(url); 4681 } 4682 4683 // called by JNI 4684 private void sendPluginState(int state) { 4685 WebViewCore.PluginStateData psd = new WebViewCore.PluginStateData(); 4686 psd.mFrame = nativeCursorFramePointer(); 4687 psd.mNode = nativeCursorNodePointer(); 4688 psd.mState = state; 4689 mWebViewCore.sendMessage(EventHub.PLUGIN_STATE, psd); 4690 } 4691 4692 @Override 4693 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 4694 boolean result = false; 4695 if (inEditingMode()) { 4696 result = mWebTextView.requestFocus(direction, 4697 previouslyFocusedRect); 4698 } else { 4699 result = super.requestFocus(direction, previouslyFocusedRect); 4700 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 4701 // For cases such as GMail, where we gain focus from a direction, 4702 // we want to move to the first available link. 4703 // FIXME: If there are no visible links, we may not want to 4704 int fakeKeyDirection = 0; 4705 switch(direction) { 4706 case View.FOCUS_UP: 4707 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 4708 break; 4709 case View.FOCUS_DOWN: 4710 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 4711 break; 4712 case View.FOCUS_LEFT: 4713 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 4714 break; 4715 case View.FOCUS_RIGHT: 4716 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 4717 break; 4718 default: 4719 return result; 4720 } 4721 if (mNativeClass != 0 && !nativeHasCursorNode()) { 4722 navHandledKey(fakeKeyDirection, 1, true, 0, true); 4723 } 4724 } 4725 } 4726 return result; 4727 } 4728 4729 @Override 4730 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 4731 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 4732 4733 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 4734 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 4735 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 4736 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 4737 4738 int measuredHeight = heightSize; 4739 int measuredWidth = widthSize; 4740 4741 // Grab the content size from WebViewCore. 4742 int contentHeight = contentToViewDimension(mContentHeight); 4743 int contentWidth = contentToViewDimension(mContentWidth); 4744 4745// Log.d(LOGTAG, "------- measure " + heightMode); 4746 4747 if (heightMode != MeasureSpec.EXACTLY) { 4748 mHeightCanMeasure = true; 4749 measuredHeight = contentHeight; 4750 if (heightMode == MeasureSpec.AT_MOST) { 4751 // If we are larger than the AT_MOST height, then our height can 4752 // no longer be measured and we should scroll internally. 4753 if (measuredHeight > heightSize) { 4754 measuredHeight = heightSize; 4755 mHeightCanMeasure = false; 4756 } 4757 } 4758 } else { 4759 mHeightCanMeasure = false; 4760 } 4761 if (mNativeClass != 0) { 4762 nativeSetHeightCanMeasure(mHeightCanMeasure); 4763 } 4764 // For the width, always use the given size unless unspecified. 4765 if (widthMode == MeasureSpec.UNSPECIFIED) { 4766 mWidthCanMeasure = true; 4767 measuredWidth = contentWidth; 4768 } else { 4769 mWidthCanMeasure = false; 4770 } 4771 4772 synchronized (this) { 4773 setMeasuredDimension(measuredWidth, measuredHeight); 4774 } 4775 } 4776 4777 @Override 4778 public boolean requestChildRectangleOnScreen(View child, 4779 Rect rect, 4780 boolean immediate) { 4781 rect.offset(child.getLeft() - child.getScrollX(), 4782 child.getTop() - child.getScrollY()); 4783 4784 int height = getViewHeightWithTitle(); 4785 int screenTop = mScrollY; 4786 int screenBottom = screenTop + height; 4787 4788 int scrollYDelta = 0; 4789 4790 if (rect.bottom > screenBottom) { 4791 int oneThirdOfScreenHeight = height / 3; 4792 if (rect.height() > 2 * oneThirdOfScreenHeight) { 4793 // If the rectangle is too tall to fit in the bottom two thirds 4794 // of the screen, place it at the top. 4795 scrollYDelta = rect.top - screenTop; 4796 } else { 4797 // If the rectangle will still fit on screen, we want its 4798 // top to be in the top third of the screen. 4799 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 4800 } 4801 } else if (rect.top < screenTop) { 4802 scrollYDelta = rect.top - screenTop; 4803 } 4804 4805 int width = getWidth() - getVerticalScrollbarWidth(); 4806 int screenLeft = mScrollX; 4807 int screenRight = screenLeft + width; 4808 4809 int scrollXDelta = 0; 4810 4811 if (rect.right > screenRight && rect.left > screenLeft) { 4812 if (rect.width() > width) { 4813 scrollXDelta += (rect.left - screenLeft); 4814 } else { 4815 scrollXDelta += (rect.right - screenRight); 4816 } 4817 } else if (rect.left < screenLeft) { 4818 scrollXDelta -= (screenLeft - rect.left); 4819 } 4820 4821 if ((scrollYDelta | scrollXDelta) != 0) { 4822 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 4823 } 4824 4825 return false; 4826 } 4827 4828 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 4829 String replace, int newStart, int newEnd) { 4830 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 4831 arg.mReplace = replace; 4832 arg.mNewStart = newStart; 4833 arg.mNewEnd = newEnd; 4834 mTextGeneration++; 4835 arg.mTextGeneration = mTextGeneration; 4836 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 4837 } 4838 4839 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 4840 if (nativeCursorWantsKeyEvents() && !nativeCursorMatchesFocus()) { 4841 mWebViewCore.sendMessage(EventHub.CLICK); 4842 if (mWebTextView.mOkayForFocusNotToMatch) { 4843 int select = nativeFocusCandidateIsTextField() ? 4844 nativeFocusCandidateMaxLength() : 0; 4845 setSelection(select, select); 4846 } 4847 } 4848 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 4849 arg.mEvent = event; 4850 arg.mCurrentText = currentText; 4851 // Increase our text generation number, and pass it to webcore thread 4852 mTextGeneration++; 4853 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 4854 // WebKit's document state is not saved until about to leave the page. 4855 // To make sure the host application, like Browser, has the up to date 4856 // document state when it goes to background, we force to save the 4857 // document state. 4858 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 4859 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 4860 cursorData(), 1000); 4861 } 4862 4863 /* package */ WebViewCore getWebViewCore() { 4864 return mWebViewCore; 4865 } 4866 4867 //------------------------------------------------------------------------- 4868 // Methods can be called from a separate thread, like WebViewCore 4869 // If it needs to call the View system, it has to send message. 4870 //------------------------------------------------------------------------- 4871 4872 /** 4873 * General handler to receive message coming from webkit thread 4874 */ 4875 class PrivateHandler extends Handler { 4876 @Override 4877 public void handleMessage(Message msg) { 4878 if (DebugFlags.WEB_VIEW) { 4879 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 4880 > INVAL_RECT_MSG_ID ? Integer.toString(msg.what) 4881 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 4882 } 4883 if (mWebViewCore == null) { 4884 // after WebView's destroy() is called, skip handling messages. 4885 return; 4886 } 4887 switch (msg.what) { 4888 case REMEMBER_PASSWORD: { 4889 mDatabase.setUsernamePassword( 4890 msg.getData().getString("host"), 4891 msg.getData().getString("username"), 4892 msg.getData().getString("password")); 4893 ((Message) msg.obj).sendToTarget(); 4894 break; 4895 } 4896 case NEVER_REMEMBER_PASSWORD: { 4897 mDatabase.setUsernamePassword( 4898 msg.getData().getString("host"), null, null); 4899 ((Message) msg.obj).sendToTarget(); 4900 break; 4901 } 4902 case SWITCH_TO_SHORTPRESS: { 4903 // if mPreventDrag is not confirmed, treat it as no so that 4904 // it won't block panning the page. 4905 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 4906 mPreventDrag = PREVENT_DRAG_NO; 4907 } 4908 if (mTouchMode == TOUCH_INIT_MODE) { 4909 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 4910 updateSelection(); 4911 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4912 mTouchMode = TOUCH_DONE_MODE; 4913 } 4914 break; 4915 } 4916 case SWITCH_TO_LONGPRESS: { 4917 if (mPreventDrag == PREVENT_DRAG_NO) { 4918 mTouchMode = TOUCH_DONE_MODE; 4919 performLongClick(); 4920 rebuildWebTextView(); 4921 } 4922 break; 4923 } 4924 case RELEASE_SINGLE_TAP: { 4925 if (mPreventDrag == PREVENT_DRAG_NO) { 4926 mTouchMode = TOUCH_DONE_MODE; 4927 doShortPress(); 4928 } 4929 break; 4930 } 4931 case SCROLL_BY_MSG_ID: 4932 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 4933 break; 4934 case SYNC_SCROLL_TO_MSG_ID: 4935 if (mUserScroll) { 4936 // if user has scrolled explicitly, don't sync the 4937 // scroll position any more 4938 mUserScroll = false; 4939 break; 4940 } 4941 // fall through 4942 case SCROLL_TO_MSG_ID: 4943 if (setContentScrollTo(msg.arg1, msg.arg2)) { 4944 // if we can't scroll to the exact position due to pin, 4945 // send a message to WebCore to re-scroll when we get a 4946 // new picture 4947 mUserScroll = false; 4948 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 4949 msg.arg1, msg.arg2); 4950 } 4951 break; 4952 case SPAWN_SCROLL_TO_MSG_ID: 4953 spawnContentScrollTo(msg.arg1, msg.arg2); 4954 break; 4955 case NEW_PICTURE_MSG_ID: { 4956 WebSettings settings = mWebViewCore.getSettings(); 4957 // called for new content 4958 final int viewWidth = getViewWidth(); 4959 final WebViewCore.DrawData draw = 4960 (WebViewCore.DrawData) msg.obj; 4961 final Point viewSize = draw.mViewPoint; 4962 boolean useWideViewport = settings.getUseWideViewPort(); 4963 WebViewCore.RestoreState restoreState = draw.mRestoreState; 4964 if (restoreState != null) { 4965 mInZoomOverview = false; 4966 mLastScale = restoreState.mTextWrapScale; 4967 if (restoreState.mMinScale == 0) { 4968 if (restoreState.mMobileSite) { 4969 if (draw.mMinPrefWidth > 4970 Math.max(0, draw.mViewPoint.x)) { 4971 mMinZoomScale = (float) viewWidth 4972 / draw.mMinPrefWidth; 4973 mMinZoomScaleFixed = false; 4974 } else { 4975 mMinZoomScale = restoreState.mDefaultScale; 4976 mMinZoomScaleFixed = true; 4977 } 4978 } else { 4979 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 4980 mMinZoomScaleFixed = false; 4981 } 4982 } else { 4983 mMinZoomScale = restoreState.mMinScale; 4984 mMinZoomScaleFixed = true; 4985 } 4986 if (restoreState.mMaxScale == 0) { 4987 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 4988 } else { 4989 mMaxZoomScale = restoreState.mMaxScale; 4990 } 4991 setNewZoomScale(mLastScale, false); 4992 setContentScrollTo(restoreState.mScrollX, 4993 restoreState.mScrollY); 4994 if (useWideViewport 4995 && settings.getLoadWithOverviewMode()) { 4996 if (restoreState.mViewScale == 0 4997 || (restoreState.mMobileSite 4998 && mMinZoomScale < restoreState.mDefaultScale)) { 4999 mInZoomOverview = true; 5000 } 5001 } 5002 // As we are on a new page, remove the WebTextView. This 5003 // is necessary for page loads driven by webkit, and in 5004 // particular when the user was on a password field, so 5005 // the WebTextView was visible. 5006 clearTextEntry(); 5007 } 5008 // We update the layout (i.e. request a layout from the 5009 // view system) if the last view size that we sent to 5010 // WebCore matches the view size of the picture we just 5011 // received in the fixed dimension. 5012 final boolean updateLayout = viewSize.x == mLastWidthSent 5013 && viewSize.y == mLastHeightSent; 5014 recordNewContentSize(draw.mWidthHeight.x, 5015 draw.mWidthHeight.y 5016 + (mFindIsUp ? mFindHeight : 0), updateLayout); 5017 if (DebugFlags.WEB_VIEW) { 5018 Rect b = draw.mInvalRegion.getBounds(); 5019 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 5020 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 5021 } 5022 invalidateContentRect(draw.mInvalRegion.getBounds()); 5023 if (mPictureListener != null) { 5024 mPictureListener.onNewPicture(WebView.this, capturePicture()); 5025 } 5026 if (useWideViewport) { 5027 mZoomOverviewWidth = Math.max(draw.mMinPrefWidth, 5028 draw.mViewPoint.x); 5029 } 5030 if (!mMinZoomScaleFixed) { 5031 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 5032 } 5033 if (!mDrawHistory && mInZoomOverview) { 5034 // fit the content width to the current view. Ignore 5035 // the rounding error case. 5036 if (Math.abs((viewWidth * mInvActualScale) 5037 - mZoomOverviewWidth) > 1) { 5038 setNewZoomScale((float) viewWidth 5039 / mZoomOverviewWidth, false); 5040 } 5041 } 5042 break; 5043 } 5044 case WEBCORE_INITIALIZED_MSG_ID: 5045 // nativeCreate sets mNativeClass to a non-zero value 5046 nativeCreate(msg.arg1); 5047 break; 5048 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 5049 // Make sure that the textfield is currently focused 5050 // and representing the same node as the pointer. 5051 if (inEditingMode() && 5052 mWebTextView.isSameTextField(msg.arg1)) { 5053 if (msg.getData().getBoolean("password")) { 5054 Spannable text = (Spannable) mWebTextView.getText(); 5055 int start = Selection.getSelectionStart(text); 5056 int end = Selection.getSelectionEnd(text); 5057 mWebTextView.setInPassword(true); 5058 // Restore the selection, which may have been 5059 // ruined by setInPassword. 5060 Spannable pword = 5061 (Spannable) mWebTextView.getText(); 5062 Selection.setSelection(pword, start, end); 5063 // If the text entry has created more events, ignore 5064 // this one. 5065 } else if (msg.arg2 == mTextGeneration) { 5066 mWebTextView.setTextAndKeepSelection( 5067 (String) msg.obj); 5068 } 5069 } 5070 break; 5071 case UPDATE_TEXT_SELECTION_MSG_ID: 5072 if (inEditingMode() 5073 && mWebTextView.isSameTextField(msg.arg1) 5074 && msg.arg2 == mTextGeneration) { 5075 WebViewCore.TextSelectionData tData 5076 = (WebViewCore.TextSelectionData) msg.obj; 5077 mWebTextView.setSelectionFromWebKit(tData.mStart, 5078 tData.mEnd); 5079 } 5080 break; 5081 case MOVE_OUT_OF_PLUGIN: 5082 if (nativePluginEatsNavKey()) { 5083 navHandledKey(msg.arg1, 1, false, 0, true); 5084 } 5085 break; 5086 case UPDATE_TEXT_ENTRY_MSG_ID: 5087 // this is sent after finishing resize in WebViewCore. Make 5088 // sure the text edit box is still on the screen. 5089 if (inEditingMode() && nativeCursorIsTextInput()) { 5090 mWebTextView.bringIntoView(); 5091 rebuildWebTextView(); 5092 } 5093 break; 5094 case CLEAR_TEXT_ENTRY: 5095 clearTextEntry(); 5096 break; 5097 case INVAL_RECT_MSG_ID: { 5098 Rect r = (Rect)msg.obj; 5099 if (r == null) { 5100 invalidate(); 5101 } else { 5102 // we need to scale r from content into view coords, 5103 // which viewInvalidate() does for us 5104 viewInvalidate(r.left, r.top, r.right, r.bottom); 5105 } 5106 break; 5107 } 5108 case REQUEST_FORM_DATA: 5109 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 5110 if (mWebTextView.isSameTextField(msg.arg1)) { 5111 mWebTextView.setAdapterCustom(adapter); 5112 } 5113 break; 5114 case UPDATE_CLIPBOARD: 5115 String str = (String) msg.obj; 5116 if (DebugFlags.WEB_VIEW) { 5117 Log.v(LOGTAG, "UPDATE_CLIPBOARD " + str); 5118 } 5119 try { 5120 IClipboard clip = IClipboard.Stub.asInterface( 5121 ServiceManager.getService("clipboard")); 5122 clip.setClipboardText(str); 5123 } catch (android.os.RemoteException e) { 5124 Log.e(LOGTAG, "Clipboard failed", e); 5125 } 5126 break; 5127 case RESUME_WEBCORE_UPDATE: 5128 WebViewCore.resumeUpdate(mWebViewCore); 5129 break; 5130 5131 case LONG_PRESS_CENTER: 5132 // as this is shared by keydown and trackballdown, reset all 5133 // the states 5134 mGotCenterDown = false; 5135 mTrackballDown = false; 5136 // LONG_PRESS_CENTER is sent as a delayed message. If we 5137 // switch to windows overview, the WebView will be 5138 // temporarily removed from the view system. In that case, 5139 // do nothing. 5140 if (getParent() != null) { 5141 performLongClick(); 5142 } 5143 break; 5144 5145 case WEBCORE_NEED_TOUCH_EVENTS: 5146 mForwardTouchEvents = (msg.arg1 != 0); 5147 break; 5148 5149 case PREVENT_TOUCH_ID: 5150 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 5151 // dont override if mPreventDrag has been set to no due 5152 // to time out 5153 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5154 mPreventDrag = msg.arg2 == 1 ? PREVENT_DRAG_YES 5155 : PREVENT_DRAG_NO; 5156 if (mPreventDrag == PREVENT_DRAG_YES) { 5157 mTouchMode = TOUCH_DONE_MODE; 5158 } 5159 } 5160 } 5161 break; 5162 5163 case REQUEST_KEYBOARD: 5164 if (msg.arg1 == 0) { 5165 hideSoftKeyboard(); 5166 } else { 5167 displaySoftKeyboard(false); 5168 } 5169 break; 5170 5171 default: 5172 super.handleMessage(msg); 5173 break; 5174 } 5175 } 5176 } 5177 5178 // Class used to use a dropdown for a <select> element 5179 private class InvokeListBox implements Runnable { 5180 // Whether the listbox allows multiple selection. 5181 private boolean mMultiple; 5182 // Passed in to a list with multiple selection to tell 5183 // which items are selected. 5184 private int[] mSelectedArray; 5185 // Passed in to a list with single selection to tell 5186 // where the initial selection is. 5187 private int mSelection; 5188 5189 private Container[] mContainers; 5190 5191 // Need these to provide stable ids to my ArrayAdapter, 5192 // which normally does not have stable ids. (Bug 1250098) 5193 private class Container extends Object { 5194 String mString; 5195 boolean mEnabled; 5196 int mId; 5197 5198 public String toString() { 5199 return mString; 5200 } 5201 } 5202 5203 /** 5204 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 5205 * and allow filtering. 5206 */ 5207 private class MyArrayListAdapter extends ArrayAdapter<Container> { 5208 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 5209 super(context, 5210 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 5211 com.android.internal.R.layout.select_dialog_singlechoice, 5212 objects); 5213 } 5214 5215 @Override 5216 public boolean hasStableIds() { 5217 // AdapterView's onChanged method uses this to determine whether 5218 // to restore the old state. Return false so that the old (out 5219 // of date) state does not replace the new, valid state. 5220 return false; 5221 } 5222 5223 private Container item(int position) { 5224 if (position < 0 || position >= getCount()) { 5225 return null; 5226 } 5227 return (Container) getItem(position); 5228 } 5229 5230 @Override 5231 public long getItemId(int position) { 5232 Container item = item(position); 5233 if (item == null) { 5234 return -1; 5235 } 5236 return item.mId; 5237 } 5238 5239 @Override 5240 public boolean areAllItemsEnabled() { 5241 return false; 5242 } 5243 5244 @Override 5245 public boolean isEnabled(int position) { 5246 Container item = item(position); 5247 if (item == null) { 5248 return false; 5249 } 5250 return item.mEnabled; 5251 } 5252 } 5253 5254 private InvokeListBox(String[] array, 5255 boolean[] enabled, int[] selected) { 5256 mMultiple = true; 5257 mSelectedArray = selected; 5258 5259 int length = array.length; 5260 mContainers = new Container[length]; 5261 for (int i = 0; i < length; i++) { 5262 mContainers[i] = new Container(); 5263 mContainers[i].mString = array[i]; 5264 mContainers[i].mEnabled = enabled[i]; 5265 mContainers[i].mId = i; 5266 } 5267 } 5268 5269 private InvokeListBox(String[] array, boolean[] enabled, int 5270 selection) { 5271 mSelection = selection; 5272 mMultiple = false; 5273 5274 int length = array.length; 5275 mContainers = new Container[length]; 5276 for (int i = 0; i < length; i++) { 5277 mContainers[i] = new Container(); 5278 mContainers[i].mString = array[i]; 5279 mContainers[i].mEnabled = enabled[i]; 5280 mContainers[i].mId = i; 5281 } 5282 } 5283 5284 /* 5285 * Whenever the data set changes due to filtering, this class ensures 5286 * that the checked item remains checked. 5287 */ 5288 private class SingleDataSetObserver extends DataSetObserver { 5289 private long mCheckedId; 5290 private ListView mListView; 5291 private Adapter mAdapter; 5292 5293 /* 5294 * Create a new observer. 5295 * @param id The ID of the item to keep checked. 5296 * @param l ListView for getting and clearing the checked states 5297 * @param a Adapter for getting the IDs 5298 */ 5299 public SingleDataSetObserver(long id, ListView l, Adapter a) { 5300 mCheckedId = id; 5301 mListView = l; 5302 mAdapter = a; 5303 } 5304 5305 public void onChanged() { 5306 // The filter may have changed which item is checked. Find the 5307 // item that the ListView thinks is checked. 5308 int position = mListView.getCheckedItemPosition(); 5309 long id = mAdapter.getItemId(position); 5310 if (mCheckedId != id) { 5311 // Clear the ListView's idea of the checked item, since 5312 // it is incorrect 5313 mListView.clearChoices(); 5314 // Search for mCheckedId. If it is in the filtered list, 5315 // mark it as checked 5316 int count = mAdapter.getCount(); 5317 for (int i = 0; i < count; i++) { 5318 if (mAdapter.getItemId(i) == mCheckedId) { 5319 mListView.setItemChecked(i, true); 5320 break; 5321 } 5322 } 5323 } 5324 } 5325 5326 public void onInvalidate() {} 5327 } 5328 5329 public void run() { 5330 final ListView listView = (ListView) LayoutInflater.from(mContext) 5331 .inflate(com.android.internal.R.layout.select_dialog, null); 5332 final MyArrayListAdapter adapter = new 5333 MyArrayListAdapter(mContext, mContainers, mMultiple); 5334 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 5335 .setView(listView).setCancelable(true) 5336 .setInverseBackgroundForced(true); 5337 5338 if (mMultiple) { 5339 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 5340 public void onClick(DialogInterface dialog, int which) { 5341 mWebViewCore.sendMessage( 5342 EventHub.LISTBOX_CHOICES, 5343 adapter.getCount(), 0, 5344 listView.getCheckedItemPositions()); 5345 }}); 5346 b.setNegativeButton(android.R.string.cancel, 5347 new DialogInterface.OnClickListener() { 5348 public void onClick(DialogInterface dialog, int which) { 5349 mWebViewCore.sendMessage( 5350 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5351 }}); 5352 } 5353 final AlertDialog dialog = b.create(); 5354 listView.setAdapter(adapter); 5355 listView.setFocusableInTouchMode(true); 5356 // There is a bug (1250103) where the checks in a ListView with 5357 // multiple items selected are associated with the positions, not 5358 // the ids, so the items do not properly retain their checks when 5359 // filtered. Do not allow filtering on multiple lists until 5360 // that bug is fixed. 5361 5362 listView.setTextFilterEnabled(!mMultiple); 5363 if (mMultiple) { 5364 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 5365 int length = mSelectedArray.length; 5366 for (int i = 0; i < length; i++) { 5367 listView.setItemChecked(mSelectedArray[i], true); 5368 } 5369 } else { 5370 listView.setOnItemClickListener(new OnItemClickListener() { 5371 public void onItemClick(AdapterView parent, View v, 5372 int position, long id) { 5373 mWebViewCore.sendMessage( 5374 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 5375 dialog.dismiss(); 5376 } 5377 }); 5378 if (mSelection != -1) { 5379 listView.setSelection(mSelection); 5380 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 5381 listView.setItemChecked(mSelection, true); 5382 DataSetObserver observer = new SingleDataSetObserver( 5383 adapter.getItemId(mSelection), listView, adapter); 5384 adapter.registerDataSetObserver(observer); 5385 } 5386 } 5387 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 5388 public void onCancel(DialogInterface dialog) { 5389 mWebViewCore.sendMessage( 5390 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5391 } 5392 }); 5393 dialog.show(); 5394 } 5395 } 5396 5397 /* 5398 * Request a dropdown menu for a listbox with multiple selection. 5399 * 5400 * @param array Labels for the listbox. 5401 * @param enabledArray Which positions are enabled. 5402 * @param selectedArray Which positions are initally selected. 5403 */ 5404 void requestListBox(String[] array, boolean[]enabledArray, int[] 5405 selectedArray) { 5406 mPrivateHandler.post( 5407 new InvokeListBox(array, enabledArray, selectedArray)); 5408 } 5409 5410 /* 5411 * Request a dropdown menu for a listbox with single selection or a single 5412 * <select> element. 5413 * 5414 * @param array Labels for the listbox. 5415 * @param enabledArray Which positions are enabled. 5416 * @param selection Which position is initally selected. 5417 */ 5418 void requestListBox(String[] array, boolean[]enabledArray, int selection) { 5419 mPrivateHandler.post( 5420 new InvokeListBox(array, enabledArray, selection)); 5421 } 5422 5423 // called by JNI 5424 private void sendMoveMouse(int frame, int node, int x, int y) { 5425 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 5426 new WebViewCore.CursorData(frame, node, x, y)); 5427 } 5428 5429 /* 5430 * Send a mouse move event to the webcore thread. 5431 * 5432 * @param removeFocus Pass true if the "mouse" cursor is now over a node 5433 * which wants key events, but it is not the focus. This 5434 * will make the visual appear as though nothing is in 5435 * focus. Remove the WebTextView, if present, and stop 5436 * drawing the blinking caret. 5437 * called by JNI 5438 */ 5439 private void sendMoveMouseIfLatest(boolean removeFocus) { 5440 if (removeFocus) { 5441 clearTextEntry(); 5442 setFocusControllerInactive(); 5443 } 5444 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 5445 cursorData()); 5446 } 5447 5448 // called by JNI 5449 private void sendMotionUp(int touchGeneration, 5450 int frame, int node, int x, int y) { 5451 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 5452 touchUpData.mMoveGeneration = touchGeneration; 5453 touchUpData.mFrame = frame; 5454 touchUpData.mNode = node; 5455 touchUpData.mX = x; 5456 touchUpData.mY = y; 5457 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 5458 } 5459 5460 5461 private int getScaledMaxXScroll() { 5462 int width; 5463 if (mHeightCanMeasure == false) { 5464 width = getViewWidth() / 4; 5465 } else { 5466 Rect visRect = new Rect(); 5467 calcOurVisibleRect(visRect); 5468 width = visRect.width() / 2; 5469 } 5470 // FIXME the divisor should be retrieved from somewhere 5471 return viewToContentX(width); 5472 } 5473 5474 private int getScaledMaxYScroll() { 5475 int height; 5476 if (mHeightCanMeasure == false) { 5477 height = getViewHeight() / 4; 5478 } else { 5479 Rect visRect = new Rect(); 5480 calcOurVisibleRect(visRect); 5481 height = visRect.height() / 2; 5482 } 5483 // FIXME the divisor should be retrieved from somewhere 5484 // the closest thing today is hard-coded into ScrollView.java 5485 // (from ScrollView.java, line 363) int maxJump = height/2; 5486 return Math.round(height * mInvActualScale); 5487 } 5488 5489 /** 5490 * Called by JNI to invalidate view 5491 */ 5492 private void viewInvalidate() { 5493 invalidate(); 5494 } 5495 5496 // return true if the key was handled 5497 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 5498 long time, boolean ignorePlugin) { 5499 if (mNativeClass == 0) { 5500 return false; 5501 } 5502 if (ignorePlugin == false && nativePluginEatsNavKey()) { 5503 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 5504 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 5505 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 5506 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 5507 , 0, 0, 0); 5508 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5509 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5510 return true; 5511 } 5512 mLastCursorTime = time; 5513 mLastCursorBounds = nativeGetCursorRingBounds(); 5514 boolean keyHandled 5515 = nativeMoveCursor(keyCode, count, noScroll) == false; 5516 if (DebugFlags.WEB_VIEW) { 5517 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 5518 + " mLastCursorTime=" + mLastCursorTime 5519 + " handled=" + keyHandled); 5520 } 5521 if (keyHandled == false || mHeightCanMeasure == false) { 5522 return keyHandled; 5523 } 5524 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 5525 if (contentCursorRingBounds.isEmpty()) return keyHandled; 5526 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 5527 Rect visRect = new Rect(); 5528 calcOurVisibleRect(visRect); 5529 Rect outset = new Rect(visRect); 5530 int maxXScroll = visRect.width() / 2; 5531 int maxYScroll = visRect.height() / 2; 5532 outset.inset(-maxXScroll, -maxYScroll); 5533 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 5534 return keyHandled; 5535 } 5536 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 5537 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 5538 maxXScroll); 5539 if (maxH > 0) { 5540 pinScrollBy(maxH, 0, true, 0); 5541 } else { 5542 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 5543 -maxXScroll); 5544 if (maxH < 0) { 5545 pinScrollBy(maxH, 0, true, 0); 5546 } 5547 } 5548 if (mLastCursorBounds.isEmpty()) return keyHandled; 5549 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 5550 return keyHandled; 5551 } 5552 if (DebugFlags.WEB_VIEW) { 5553 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 5554 + contentCursorRingBounds); 5555 } 5556 requestRectangleOnScreen(viewCursorRingBounds); 5557 mUserScroll = true; 5558 return keyHandled; 5559 } 5560 5561 /** 5562 * Set the background color. It's white by default. Pass 5563 * zero to make the view transparent. 5564 * @param color the ARGB color described by Color.java 5565 */ 5566 public void setBackgroundColor(int color) { 5567 mBackgroundColor = color; 5568 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 5569 } 5570 5571 public void debugDump() { 5572 nativeDebugDump(); 5573 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 5574 } 5575 5576 /** 5577 * Update our cache with updatedText. 5578 * @param updatedText The new text to put in our cache. 5579 */ 5580 /* package */ void updateCachedTextfield(String updatedText) { 5581 // Also place our generation number so that when we look at the cache 5582 // we recognize that it is up to date. 5583 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 5584 } 5585 5586 /* package */ native void nativeClearCursor(); 5587 private native void nativeCreate(int ptr); 5588 private native int nativeCursorFramePointer(); 5589 private native Rect nativeCursorNodeBounds(); 5590 /* package */ native int nativeCursorNodePointer(); 5591 /* package */ native boolean nativeCursorMatchesFocus(); 5592 private native boolean nativeCursorIntersects(Rect visibleRect); 5593 private native boolean nativeCursorIsAnchor(); 5594 private native boolean nativeCursorIsPlugin(); 5595 private native boolean nativeCursorIsTextInput(); 5596 private native Point nativeCursorPosition(); 5597 private native String nativeCursorText(); 5598 /** 5599 * Returns true if the native cursor node says it wants to handle key events 5600 * (ala plugins). This can only be called if mNativeClass is non-zero! 5601 */ 5602 private native boolean nativeCursorWantsKeyEvents(); 5603 private native void nativeDebugDump(); 5604 private native void nativeDestroy(); 5605 private native void nativeDrawCursorRing(Canvas content); 5606 private native void nativeDrawMatches(Canvas canvas); 5607 private native void nativeDrawSelection(Canvas content, float scale, 5608 int offset, int x, int y, boolean extendSelection); 5609 private native void nativeDrawSelectionRegion(Canvas content); 5610 private native void nativeDumpDisplayTree(String urlOrNull); 5611 private native int nativeFindAll(String findLower, String findUpper); 5612 private native void nativeFindNext(boolean forward); 5613 private native boolean nativeFocusCandidateIsPassword(); 5614 private native boolean nativeFocusCandidateIsRtlText(); 5615 private native boolean nativeFocusCandidateIsTextField(); 5616 private native boolean nativeFocusCandidateIsTextInput(); 5617 private native int nativeFocusCandidateMaxLength(); 5618 /* package */ native String nativeFocusCandidateName(); 5619 private native Rect nativeFocusCandidateNodeBounds(); 5620 /* package */ native int nativeFocusCandidatePointer(); 5621 private native String nativeFocusCandidateText(); 5622 private native int nativeFocusCandidateTextSize(); 5623 /* package */ native int nativeFocusNodePointer(); 5624 private native Rect nativeGetCursorRingBounds(); 5625 private native Region nativeGetSelection(); 5626 private native boolean nativeHasCursorNode(); 5627 private native boolean nativeHasFocusNode(); 5628 private native void nativeHideCursor(); 5629 private native String nativeImageURI(int x, int y); 5630 private native void nativeInstrumentReport(); 5631 /* package */ native void nativeMoveCursorToNextTextInput(); 5632 // return true if the page has been scrolled 5633 private native boolean nativeMotionUp(int x, int y, int slop); 5634 // returns false if it handled the key 5635 private native boolean nativeMoveCursor(int keyCode, int count, 5636 boolean noScroll); 5637 private native int nativeMoveGeneration(); 5638 private native void nativeMoveSelection(int x, int y, 5639 boolean extendSelection); 5640 private native boolean nativePluginEatsNavKey(); 5641 // Like many other of our native methods, you must make sure that 5642 // mNativeClass is not null before calling this method. 5643 private native void nativeRecordButtons(boolean focused, 5644 boolean pressed, boolean invalidate); 5645 private native void nativeSelectBestAt(Rect rect); 5646 private native void nativeSetFindIsDown(); 5647 private native void nativeSetFollowedLink(boolean followed); 5648 private native void nativeSetHeightCanMeasure(boolean measure); 5649 // Returns a value corresponding to CachedFrame::ImeAction 5650 /* package */ native int nativeTextFieldAction(); 5651 /** 5652 * Perform a click on a currently focused text input. Since it is already 5653 * focused, there is no need to go through the nativeMotionUp code, which 5654 * may change the Cursor. 5655 */ 5656 private native void nativeTextInputMotionUp(int x, int y); 5657 private native int nativeTextGeneration(); 5658 // Never call this version except by updateCachedTextfield(String) - 5659 // we always want to pass in our generation number. 5660 private native void nativeUpdateCachedTextfield(String updatedText, 5661 int generation); 5662 private native void nativeUpdatePluginReceivesEvents(); 5663 // return NO_LEFTEDGE means failure. 5664 private static final int NO_LEFTEDGE = -1; 5665 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 5666} 5667