WebView.java revision 4e9fe62b37878750125a0eef679e2ea6216bd8f5
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 if (0 == mNativeClass) return; // client isn't initialized 1717 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1718 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1719 String ref = nativeImageURI(contentX, contentY); 1720 Bundle data = msg.getData(); 1721 data.putString("url", ref); 1722 msg.setData(data); 1723 msg.sendToTarget(); 1724 } 1725 1726 private static int pinLoc(int x, int viewMax, int docMax) { 1727// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1728 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1729 // pin the short document to the top/left of the screen 1730 x = 0; 1731// Log.d(LOGTAG, "--- center " + x); 1732 } else if (x < 0) { 1733 x = 0; 1734// Log.d(LOGTAG, "--- zero"); 1735 } else if (x + viewMax > docMax) { 1736 x = docMax - viewMax; 1737// Log.d(LOGTAG, "--- pin " + x); 1738 } 1739 return x; 1740 } 1741 1742 // Expects x in view coordinates 1743 private int pinLocX(int x) { 1744 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1745 } 1746 1747 // Expects y in view coordinates 1748 private int pinLocY(int y) { 1749 int titleH = getTitleHeight(); 1750 // if the titlebar is still visible, just pin against 0 1751 if (y <= titleH) { 1752 return Math.max(y, 0); 1753 } 1754 // convert to 0-based coordinate (subtract the title height) 1755 // pin(), and then add the title height back in 1756 return pinLoc(y - titleH, getViewHeight(), 1757 computeVerticalScrollRange()) + titleH; 1758 } 1759 1760 /** 1761 * A title bar which is embedded in this WebView, and scrolls along with it 1762 * vertically, but not horizontally. 1763 */ 1764 private View mTitleBar; 1765 1766 /** 1767 * Since we draw the title bar ourselves, we removed the shadow from the 1768 * browser's activity. We do want a shadow at the bottom of the title bar, 1769 * or at the top of the screen if the title bar is not visible. This 1770 * drawable serves that purpose. 1771 */ 1772 private Drawable mTitleShadow; 1773 1774 /** 1775 * Add or remove a title bar to be embedded into the WebView, and scroll 1776 * along with it vertically, while remaining in view horizontally. Pass 1777 * null to remove the title bar from the WebView, and return to drawing 1778 * the WebView normally without translating to account for the title bar. 1779 * @hide 1780 */ 1781 public void setEmbeddedTitleBar(View v) { 1782 if (mTitleBar == v) return; 1783 if (mTitleBar != null) { 1784 removeView(mTitleBar); 1785 } 1786 if (null != v) { 1787 addView(v, new AbsoluteLayout.LayoutParams( 1788 ViewGroup.LayoutParams.FILL_PARENT, 1789 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1790 if (mTitleShadow == null) { 1791 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1792 com.android.internal.R.drawable.title_bar_shadow); 1793 } 1794 } 1795 mTitleBar = v; 1796 } 1797 1798 /** 1799 * Given a distance in view space, convert it to content space. Note: this 1800 * does not reflect translation, just scaling, so this should not be called 1801 * with coordinates, but should be called for dimensions like width or 1802 * height. 1803 */ 1804 private int viewToContentDimension(int d) { 1805 return Math.round(d * mInvActualScale); 1806 } 1807 1808 /** 1809 * Given an x coordinate in view space, convert it to content space. Also 1810 * may be used for absolute heights (such as for the WebTextView's 1811 * textSize, which is unaffected by the height of the title bar). 1812 */ 1813 /*package*/ int viewToContentX(int x) { 1814 return viewToContentDimension(x); 1815 } 1816 1817 /** 1818 * Given a y coordinate in view space, convert it to content space. 1819 * Takes into account the height of the title bar if there is one 1820 * embedded into the WebView. 1821 */ 1822 /*package*/ int viewToContentY(int y) { 1823 return viewToContentDimension(y - getTitleHeight()); 1824 } 1825 1826 /** 1827 * Given a distance in content space, convert it to view space. Note: this 1828 * does not reflect translation, just scaling, so this should not be called 1829 * with coordinates, but should be called for dimensions like width or 1830 * height. 1831 */ 1832 /*package*/ int contentToViewDimension(int d) { 1833 return Math.round(d * mActualScale); 1834 } 1835 1836 /** 1837 * Given an x coordinate in content space, convert it to view 1838 * space. 1839 */ 1840 /*package*/ int contentToViewX(int x) { 1841 return contentToViewDimension(x); 1842 } 1843 1844 /** 1845 * Given a y coordinate in content space, convert it to view 1846 * space. Takes into account the height of the title bar. 1847 */ 1848 /*package*/ int contentToViewY(int y) { 1849 return contentToViewDimension(y) + getTitleHeight(); 1850 } 1851 1852 private Rect contentToViewRect(Rect x) { 1853 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 1854 contentToViewX(x.right), contentToViewY(x.bottom)); 1855 } 1856 1857 /* To invalidate a rectangle in content coordinates, we need to transform 1858 the rect into view coordinates, so we can then call invalidate(...). 1859 1860 Normally, we would just call contentToView[XY](...), which eventually 1861 calls Math.round(coordinate * mActualScale). However, for invalidates, 1862 we need to account for the slop that occurs with antialiasing. To 1863 address that, we are a little more liberal in the size of the rect that 1864 we invalidate. 1865 1866 This liberal calculation calls floor() for the top/left, and ceil() for 1867 the bottom/right coordinates. This catches the possible extra pixels of 1868 antialiasing that we might have missed with just round(). 1869 */ 1870 1871 // Called by JNI to invalidate the View, given rectangle coordinates in 1872 // content space 1873 private void viewInvalidate(int l, int t, int r, int b) { 1874 final float scale = mActualScale; 1875 final int dy = getTitleHeight(); 1876 invalidate((int)Math.floor(l * scale), 1877 (int)Math.floor(t * scale) + dy, 1878 (int)Math.ceil(r * scale), 1879 (int)Math.ceil(b * scale) + dy); 1880 } 1881 1882 // Called by JNI to invalidate the View after a delay, given rectangle 1883 // coordinates in content space 1884 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 1885 final float scale = mActualScale; 1886 final int dy = getTitleHeight(); 1887 postInvalidateDelayed(delay, 1888 (int)Math.floor(l * scale), 1889 (int)Math.floor(t * scale) + dy, 1890 (int)Math.ceil(r * scale), 1891 (int)Math.ceil(b * scale) + dy); 1892 } 1893 1894 private void invalidateContentRect(Rect r) { 1895 viewInvalidate(r.left, r.top, r.right, r.bottom); 1896 } 1897 1898 // stop the scroll animation, and don't let a subsequent fling add 1899 // to the existing velocity 1900 private void abortAnimation() { 1901 mScroller.abortAnimation(); 1902 mLastVelocity = 0; 1903 } 1904 1905 /* call from webcoreview.draw(), so we're still executing in the UI thread 1906 */ 1907 private void recordNewContentSize(int w, int h, boolean updateLayout) { 1908 1909 // premature data from webkit, ignore 1910 if ((w | h) == 0) { 1911 return; 1912 } 1913 1914 // don't abort a scroll animation if we didn't change anything 1915 if (mContentWidth != w || mContentHeight != h) { 1916 // record new dimensions 1917 mContentWidth = w; 1918 mContentHeight = h; 1919 // If history Picture is drawn, don't update scroll. They will be 1920 // updated when we get out of that mode. 1921 if (!mDrawHistory) { 1922 // repin our scroll, taking into account the new content size 1923 int oldX = mScrollX; 1924 int oldY = mScrollY; 1925 mScrollX = pinLocX(mScrollX); 1926 mScrollY = pinLocY(mScrollY); 1927 if (oldX != mScrollX || oldY != mScrollY) { 1928 sendOurVisibleRect(); 1929 } 1930 if (!mScroller.isFinished()) { 1931 // We are in the middle of a scroll. Repin the final scroll 1932 // position. 1933 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 1934 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 1935 } 1936 } 1937 } 1938 contentSizeChanged(updateLayout); 1939 } 1940 1941 private void setNewZoomScale(float scale, boolean force) { 1942 if (scale < mMinZoomScale) { 1943 scale = mMinZoomScale; 1944 } else if (scale > mMaxZoomScale) { 1945 scale = mMaxZoomScale; 1946 } 1947 if (scale != mActualScale || force) { 1948 if (mDrawHistory) { 1949 // If history Picture is drawn, don't update scroll. They will 1950 // be updated when we get out of that mode. 1951 if (scale != mActualScale && !mPreviewZoomOnly) { 1952 mCallbackProxy.onScaleChanged(mActualScale, scale); 1953 } 1954 mActualScale = scale; 1955 mInvActualScale = 1 / scale; 1956 if (!mPreviewZoomOnly) { 1957 sendViewSizeZoom(); 1958 } 1959 } else { 1960 // update our scroll so we don't appear to jump 1961 // i.e. keep the center of the doc in the center of the view 1962 1963 int oldX = mScrollX; 1964 int oldY = mScrollY; 1965 float ratio = scale * mInvActualScale; // old inverse 1966 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 1967 float sy = ratio * oldY + (ratio - 1) 1968 * (mZoomCenterY - getTitleHeight()); 1969 1970 // now update our new scale and inverse 1971 if (scale != mActualScale && !mPreviewZoomOnly) { 1972 mCallbackProxy.onScaleChanged(mActualScale, scale); 1973 } 1974 mActualScale = scale; 1975 mInvActualScale = 1 / scale; 1976 1977 // Scale all the child views 1978 mViewManager.scaleAll(); 1979 1980 // as we don't have animation for scaling, don't do animation 1981 // for scrolling, as it causes weird intermediate state 1982 // pinScrollTo(Math.round(sx), Math.round(sy)); 1983 mScrollX = pinLocX(Math.round(sx)); 1984 mScrollY = pinLocY(Math.round(sy)); 1985 1986 if (!mPreviewZoomOnly) { 1987 sendViewSizeZoom(); 1988 sendOurVisibleRect(); 1989 } 1990 } 1991 } 1992 } 1993 1994 // Used to avoid sending many visible rect messages. 1995 private Rect mLastVisibleRectSent; 1996 private Rect mLastGlobalRect; 1997 1998 private Rect sendOurVisibleRect() { 1999 Rect rect = new Rect(); 2000 calcOurContentVisibleRect(rect); 2001 // Rect.equals() checks for null input. 2002 if (!rect.equals(mLastVisibleRectSent)) { 2003 Point pos = new Point(rect.left, rect.top); 2004 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2005 nativeMoveGeneration(), 0, pos); 2006 mLastVisibleRectSent = rect; 2007 } 2008 Rect globalRect = new Rect(); 2009 if (getGlobalVisibleRect(globalRect) 2010 && !globalRect.equals(mLastGlobalRect)) { 2011 if (DebugFlags.WEB_VIEW) { 2012 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2013 + globalRect.top + ",r=" + globalRect.right + ",b=" 2014 + globalRect.bottom); 2015 } 2016 // TODO: the global offset is only used by windowRect() 2017 // in ChromeClientAndroid ; other clients such as touch 2018 // and mouse events could return view + screen relative points. 2019 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2020 mLastGlobalRect = globalRect; 2021 } 2022 return rect; 2023 } 2024 2025 // Sets r to be the visible rectangle of our webview in view coordinates 2026 private void calcOurVisibleRect(Rect r) { 2027 Point p = new Point(); 2028 getGlobalVisibleRect(r, p); 2029 r.offset(-p.x, -p.y); 2030 if (mFindIsUp) { 2031 r.bottom -= mFindHeight; 2032 } 2033 } 2034 2035 // Sets r to be our visible rectangle in content coordinates 2036 private void calcOurContentVisibleRect(Rect r) { 2037 calcOurVisibleRect(r); 2038 r.left = viewToContentX(r.left); 2039 // viewToContentY will remove the total height of the title bar. Add 2040 // the visible height back in to account for the fact that if the title 2041 // bar is partially visible, the part of the visible rect which is 2042 // displaying our content is displaced by that amount. 2043 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2044 r.right = viewToContentX(r.right); 2045 r.bottom = viewToContentY(r.bottom); 2046 } 2047 2048 static class ViewSizeData { 2049 int mWidth; 2050 int mHeight; 2051 int mTextWrapWidth; 2052 float mScale; 2053 boolean mIgnoreHeight; 2054 } 2055 2056 /** 2057 * Compute unzoomed width and height, and if they differ from the last 2058 * values we sent, send them to webkit (to be used has new viewport) 2059 * 2060 * @return true if new values were sent 2061 */ 2062 private boolean sendViewSizeZoom() { 2063 int viewWidth = getViewWidth(); 2064 int newWidth = Math.round(viewWidth * mInvActualScale); 2065 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2066 /* 2067 * Because the native side may have already done a layout before the 2068 * View system was able to measure us, we have to send a height of 0 to 2069 * remove excess whitespace when we grow our width. This will trigger a 2070 * layout and a change in content size. This content size change will 2071 * mean that contentSizeChanged will either call this method directly or 2072 * indirectly from onSizeChanged. 2073 */ 2074 if (newWidth > mLastWidthSent && mWrapContent) { 2075 newHeight = 0; 2076 } 2077 // Avoid sending another message if the dimensions have not changed. 2078 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2079 ViewSizeData data = new ViewSizeData(); 2080 data.mWidth = newWidth; 2081 data.mHeight = newHeight; 2082 // while in zoom overview mode, the text are wrapped to the screen 2083 // width matching mLastScale. So that we don't trigger re-flow while 2084 // toggling between overview mode and normal mode. 2085 data.mTextWrapWidth = mInZoomOverview ? Math.round(viewWidth 2086 / mLastScale) : newWidth; 2087 data.mScale = mActualScale; 2088 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2089 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2090 mLastWidthSent = newWidth; 2091 mLastHeightSent = newHeight; 2092 return true; 2093 } 2094 return false; 2095 } 2096 2097 @Override 2098 protected int computeHorizontalScrollRange() { 2099 if (mDrawHistory) { 2100 return mHistoryWidth; 2101 } else { 2102 // to avoid rounding error caused unnecessary scrollbar, use floor 2103 return (int) Math.floor(mContentWidth * mActualScale); 2104 } 2105 } 2106 2107 @Override 2108 protected int computeVerticalScrollRange() { 2109 if (mDrawHistory) { 2110 return mHistoryHeight; 2111 } else { 2112 // to avoid rounding error caused unnecessary scrollbar, use floor 2113 return (int) Math.floor(mContentHeight * mActualScale); 2114 } 2115 } 2116 2117 @Override 2118 protected int computeVerticalScrollOffset() { 2119 return Math.max(mScrollY - getTitleHeight(), 0); 2120 } 2121 2122 @Override 2123 protected int computeVerticalScrollExtent() { 2124 return getViewHeight(); 2125 } 2126 2127 /** @hide */ 2128 @Override 2129 protected void onDrawVerticalScrollBar(Canvas canvas, 2130 Drawable scrollBar, 2131 int l, int t, int r, int b) { 2132 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2133 scrollBar.draw(canvas); 2134 } 2135 2136 /** 2137 * Get the url for the current page. This is not always the same as the url 2138 * passed to WebViewClient.onPageStarted because although the load for 2139 * that url has begun, the current page may not have changed. 2140 * @return The url for the current page. 2141 */ 2142 public String getUrl() { 2143 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2144 return h != null ? h.getUrl() : null; 2145 } 2146 2147 /** 2148 * Get the original url for the current page. This is not always the same 2149 * as the url passed to WebViewClient.onPageStarted because although the 2150 * load for that url has begun, the current page may not have changed. 2151 * Also, there may have been redirects resulting in a different url to that 2152 * originally requested. 2153 * @return The url that was originally requested for the current page. 2154 */ 2155 public String getOriginalUrl() { 2156 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2157 return h != null ? h.getOriginalUrl() : null; 2158 } 2159 2160 /** 2161 * Get the title for the current page. This is the title of the current page 2162 * until WebViewClient.onReceivedTitle is called. 2163 * @return The title for the current page. 2164 */ 2165 public String getTitle() { 2166 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2167 return h != null ? h.getTitle() : null; 2168 } 2169 2170 /** 2171 * Get the favicon for the current page. This is the favicon of the current 2172 * page until WebViewClient.onReceivedIcon is called. 2173 * @return The favicon for the current page. 2174 */ 2175 public Bitmap getFavicon() { 2176 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2177 return h != null ? h.getFavicon() : null; 2178 } 2179 2180 /** 2181 * Get the touch icon url for the apple-touch-icon <link> element. 2182 * @hide 2183 */ 2184 public String getTouchIconUrl() { 2185 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2186 return h != null ? h.getTouchIconUrl() : null; 2187 } 2188 2189 /** 2190 * Get the progress for the current page. 2191 * @return The progress for the current page between 0 and 100. 2192 */ 2193 public int getProgress() { 2194 return mCallbackProxy.getProgress(); 2195 } 2196 2197 /** 2198 * @return the height of the HTML content. 2199 */ 2200 public int getContentHeight() { 2201 return mContentHeight; 2202 } 2203 2204 /** 2205 * @return the width of the HTML content. 2206 * @hide 2207 */ 2208 public int getContentWidth() { 2209 return mContentWidth; 2210 } 2211 2212 /** 2213 * Pause all layout, parsing, and javascript timers for all webviews. This 2214 * is a global requests, not restricted to just this webview. This can be 2215 * useful if the application has been paused. 2216 */ 2217 public void pauseTimers() { 2218 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2219 } 2220 2221 /** 2222 * Resume all layout, parsing, and javascript timers for all webviews. 2223 * This will resume dispatching all timers. 2224 */ 2225 public void resumeTimers() { 2226 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2227 } 2228 2229 /** 2230 * Call this to pause any extra processing associated with this view and 2231 * its associated DOM/plugins/javascript/etc. For example, if the view is 2232 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2233 * network traffic. When the view is again "active", call onResume(). 2234 * 2235 * Note that this differs from pauseTimers(), which affects all views/DOMs 2236 * @hide 2237 */ 2238 public void onPause() { 2239 if (!mIsPaused) { 2240 mIsPaused = true; 2241 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2242 } 2243 } 2244 2245 /** 2246 * Call this to balanace a previous call to onPause() 2247 * @hide 2248 */ 2249 public void onResume() { 2250 if (mIsPaused) { 2251 mIsPaused = false; 2252 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2253 } 2254 } 2255 2256 /** 2257 * Returns true if the view is paused, meaning onPause() was called. Calling 2258 * onResume() sets the paused state back to false. 2259 * @hide 2260 */ 2261 public boolean isPaused() { 2262 return mIsPaused; 2263 } 2264 2265 /** 2266 * Call this to inform the view that memory is low so that it can 2267 * free any available memory. 2268 * @hide 2269 */ 2270 public void freeMemory() { 2271 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2272 } 2273 2274 /** 2275 * Clear the resource cache. Note that the cache is per-application, so 2276 * this will clear the cache for all WebViews used. 2277 * 2278 * @param includeDiskFiles If false, only the RAM cache is cleared. 2279 */ 2280 public void clearCache(boolean includeDiskFiles) { 2281 // Note: this really needs to be a static method as it clears cache for all 2282 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2283 // we can't make this static. 2284 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2285 includeDiskFiles ? 1 : 0, 0); 2286 } 2287 2288 /** 2289 * Make sure that clearing the form data removes the adapter from the 2290 * currently focused textfield if there is one. 2291 */ 2292 public void clearFormData() { 2293 if (inEditingMode()) { 2294 AutoCompleteAdapter adapter = null; 2295 mWebTextView.setAdapterCustom(adapter); 2296 } 2297 } 2298 2299 /** 2300 * Tell the WebView to clear its internal back/forward list. 2301 */ 2302 public void clearHistory() { 2303 mCallbackProxy.getBackForwardList().setClearPending(); 2304 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2305 } 2306 2307 /** 2308 * Clear the SSL preferences table stored in response to proceeding with SSL 2309 * certificate errors. 2310 */ 2311 public void clearSslPreferences() { 2312 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2313 } 2314 2315 /** 2316 * Return the WebBackForwardList for this WebView. This contains the 2317 * back/forward list for use in querying each item in the history stack. 2318 * This is a copy of the private WebBackForwardList so it contains only a 2319 * snapshot of the current state. Multiple calls to this method may return 2320 * different objects. The object returned from this method will not be 2321 * updated to reflect any new state. 2322 */ 2323 public WebBackForwardList copyBackForwardList() { 2324 return mCallbackProxy.getBackForwardList().clone(); 2325 } 2326 2327 /* 2328 * Highlight and scroll to the next occurance of String in findAll. 2329 * Wraps the page infinitely, and scrolls. Must be called after 2330 * calling findAll. 2331 * 2332 * @param forward Direction to search. 2333 */ 2334 public void findNext(boolean forward) { 2335 if (0 == mNativeClass) return; // client isn't initialized 2336 nativeFindNext(forward); 2337 } 2338 2339 /* 2340 * Find all instances of find on the page and highlight them. 2341 * @param find String to find. 2342 * @return int The number of occurances of the String "find" 2343 * that were found. 2344 */ 2345 public int findAll(String find) { 2346 if (0 == mNativeClass) return 0; // client isn't initialized 2347 if (mFindIsUp == false) { 2348 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2349 false); 2350 mFindIsUp = true; 2351 } 2352 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2353 invalidate(); 2354 return result; 2355 } 2356 2357 // Used to know whether the find dialog is open. Affects whether 2358 // or not we draw the highlights for matches. 2359 private boolean mFindIsUp; 2360 private int mFindHeight; 2361 2362 /** 2363 * Return the first substring consisting of the address of a physical 2364 * location. Currently, only addresses in the United States are detected, 2365 * and consist of: 2366 * - a house number 2367 * - a street name 2368 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2369 * - a city name 2370 * - a state or territory, either spelled out or two-letter abbr. 2371 * - an optional 5 digit or 9 digit zip code. 2372 * 2373 * All names must be correctly capitalized, and the zip code, if present, 2374 * must be valid for the state. The street type must be a standard USPS 2375 * spelling or abbreviation. The state or territory must also be spelled 2376 * or abbreviated using USPS standards. The house number may not exceed 2377 * five digits. 2378 * @param addr The string to search for addresses. 2379 * 2380 * @return the address, or if no address is found, return null. 2381 */ 2382 public static String findAddress(String addr) { 2383 return findAddress(addr, false); 2384 } 2385 2386 /** 2387 * @hide 2388 * Return the first substring consisting of the address of a physical 2389 * location. Currently, only addresses in the United States are detected, 2390 * and consist of: 2391 * - a house number 2392 * - a street name 2393 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2394 * - a city name 2395 * - a state or territory, either spelled out or two-letter abbr. 2396 * - an optional 5 digit or 9 digit zip code. 2397 * 2398 * Names are optionally capitalized, and the zip code, if present, 2399 * must be valid for the state. The street type must be a standard USPS 2400 * spelling or abbreviation. The state or territory must also be spelled 2401 * or abbreviated using USPS standards. The house number may not exceed 2402 * five digits. 2403 * @param addr The string to search for addresses. 2404 * @param caseInsensitive addr Set to true to make search ignore case. 2405 * 2406 * @return the address, or if no address is found, return null. 2407 */ 2408 public static String findAddress(String addr, boolean caseInsensitive) { 2409 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2410 } 2411 2412 /* 2413 * Clear the highlighting surrounding text matches created by findAll. 2414 */ 2415 public void clearMatches() { 2416 if (mFindIsUp) { 2417 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2418 false); 2419 mFindIsUp = false; 2420 } 2421 nativeSetFindIsDown(); 2422 // Now that the dialog has been removed, ensure that we scroll to a 2423 // location that is not beyond the end of the page. 2424 pinScrollTo(mScrollX, mScrollY, false, 0); 2425 invalidate(); 2426 } 2427 2428 /** 2429 * @hide 2430 */ 2431 public void setFindDialogHeight(int height) { 2432 if (DebugFlags.WEB_VIEW) { 2433 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2434 } 2435 mFindHeight = height; 2436 } 2437 2438 /** 2439 * Query the document to see if it contains any image references. The 2440 * message object will be dispatched with arg1 being set to 1 if images 2441 * were found and 0 if the document does not reference any images. 2442 * @param response The message that will be dispatched with the result. 2443 */ 2444 public void documentHasImages(Message response) { 2445 if (response == null) { 2446 return; 2447 } 2448 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2449 } 2450 2451 @Override 2452 public void computeScroll() { 2453 if (mScroller.computeScrollOffset()) { 2454 int oldX = mScrollX; 2455 int oldY = mScrollY; 2456 mScrollX = mScroller.getCurrX(); 2457 mScrollY = mScroller.getCurrY(); 2458 postInvalidate(); // So we draw again 2459 if (oldX != mScrollX || oldY != mScrollY) { 2460 // as onScrollChanged() is not called, sendOurVisibleRect() 2461 // needs to be call explicitly 2462 sendOurVisibleRect(); 2463 } 2464 } else { 2465 super.computeScroll(); 2466 } 2467 } 2468 2469 private static int computeDuration(int dx, int dy) { 2470 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2471 int duration = distance * 1000 / STD_SPEED; 2472 return Math.min(duration, MAX_DURATION); 2473 } 2474 2475 // helper to pin the scrollBy parameters (already in view coordinates) 2476 // returns true if the scroll was changed 2477 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2478 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2479 } 2480 // helper to pin the scrollTo parameters (already in view coordinates) 2481 // returns true if the scroll was changed 2482 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2483 x = pinLocX(x); 2484 y = pinLocY(y); 2485 int dx = x - mScrollX; 2486 int dy = y - mScrollY; 2487 2488 if ((dx | dy) == 0) { 2489 return false; 2490 } 2491 if (animate) { 2492 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2493 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2494 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2495 awakenScrollBars(mScroller.getDuration()); 2496 invalidate(); 2497 } else { 2498 abortAnimation(); // just in case 2499 scrollTo(x, y); 2500 } 2501 return true; 2502 } 2503 2504 // Scale from content to view coordinates, and pin. 2505 // Also called by jni webview.cpp 2506 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2507 if (mDrawHistory) { 2508 // disallow WebView to change the scroll position as History Picture 2509 // is used in the view system. 2510 // TODO: as we switchOutDrawHistory when trackball or navigation 2511 // keys are hit, this should be safe. Right? 2512 return false; 2513 } 2514 cx = contentToViewDimension(cx); 2515 cy = contentToViewDimension(cy); 2516 if (mHeightCanMeasure) { 2517 // move our visible rect according to scroll request 2518 if (cy != 0) { 2519 Rect tempRect = new Rect(); 2520 calcOurVisibleRect(tempRect); 2521 tempRect.offset(cx, cy); 2522 requestRectangleOnScreen(tempRect); 2523 } 2524 // FIXME: We scroll horizontally no matter what because currently 2525 // ScrollView and ListView will not scroll horizontally. 2526 // FIXME: Why do we only scroll horizontally if there is no 2527 // vertical scroll? 2528// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2529 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2530 } else { 2531 return pinScrollBy(cx, cy, animate, 0); 2532 } 2533 } 2534 2535 // scale from content to view coordinates, and pin 2536 // return true if pin caused the final x/y different than the request cx/cy, 2537 // and a future scroll may reach the request cx/cy after our size has 2538 // changed 2539 // return false if the view scroll to the exact position as it is requested, 2540 // where negative numbers are taken to mean 0 2541 private boolean setContentScrollTo(int cx, int cy) { 2542 if (mDrawHistory) { 2543 // disallow WebView to change the scroll position as History Picture 2544 // is used in the view system. 2545 // One known case where this is called is that WebCore tries to 2546 // restore the scroll position. As history Picture already uses the 2547 // saved scroll position, it is ok to skip this. 2548 return false; 2549 } 2550 int vx; 2551 int vy; 2552 if ((cx | cy) == 0) { 2553 // If the page is being scrolled to (0,0), do not add in the title 2554 // bar's height, and simply scroll to (0,0). (The only other work 2555 // in contentToView_ is to multiply, so this would not change 0.) 2556 vx = 0; 2557 vy = 0; 2558 } else { 2559 vx = contentToViewX(cx); 2560 vy = contentToViewY(cy); 2561 } 2562// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2563// vx + " " + vy + "]"); 2564 // Some mobile sites attempt to scroll the title bar off the page by 2565 // scrolling to (0,1). If we are at the top left corner of the 2566 // page, assume this is an attempt to scroll off the title bar, and 2567 // animate the title bar off screen slowly enough that the user can see 2568 // it. 2569 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0) { 2570 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2571 // Since we are animating, we have not yet reached the desired 2572 // scroll position. Do not return true to request another attempt 2573 return false; 2574 } 2575 pinScrollTo(vx, vy, false, 0); 2576 // If the request was to scroll to a negative coordinate, treat it as if 2577 // it was a request to scroll to 0 2578 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2579 return true; 2580 } else { 2581 return false; 2582 } 2583 } 2584 2585 // scale from content to view coordinates, and pin 2586 private void spawnContentScrollTo(int cx, int cy) { 2587 if (mDrawHistory) { 2588 // disallow WebView to change the scroll position as History Picture 2589 // is used in the view system. 2590 return; 2591 } 2592 int vx = contentToViewX(cx); 2593 int vy = contentToViewY(cy); 2594 pinScrollTo(vx, vy, true, 0); 2595 } 2596 2597 /** 2598 * These are from webkit, and are in content coordinate system (unzoomed) 2599 */ 2600 private void contentSizeChanged(boolean updateLayout) { 2601 // suppress 0,0 since we usually see real dimensions soon after 2602 // this avoids drawing the prev content in a funny place. If we find a 2603 // way to consolidate these notifications, this check may become 2604 // obsolete 2605 if ((mContentWidth | mContentHeight) == 0) { 2606 return; 2607 } 2608 2609 if (mHeightCanMeasure) { 2610 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2611 && updateLayout) { 2612 requestLayout(); 2613 } 2614 } else if (mWidthCanMeasure) { 2615 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2616 && updateLayout) { 2617 requestLayout(); 2618 } 2619 } else { 2620 // If we don't request a layout, try to send our view size to the 2621 // native side to ensure that WebCore has the correct dimensions. 2622 sendViewSizeZoom(); 2623 } 2624 } 2625 2626 /** 2627 * Set the WebViewClient that will receive various notifications and 2628 * requests. This will replace the current handler. 2629 * @param client An implementation of WebViewClient. 2630 */ 2631 public void setWebViewClient(WebViewClient client) { 2632 mCallbackProxy.setWebViewClient(client); 2633 } 2634 2635 /** 2636 * Register the interface to be used when content can not be handled by 2637 * the rendering engine, and should be downloaded instead. This will replace 2638 * the current handler. 2639 * @param listener An implementation of DownloadListener. 2640 */ 2641 public void setDownloadListener(DownloadListener listener) { 2642 mCallbackProxy.setDownloadListener(listener); 2643 } 2644 2645 /** 2646 * Set the chrome handler. This is an implementation of WebChromeClient for 2647 * use in handling Javascript dialogs, favicons, titles, and the progress. 2648 * This will replace the current handler. 2649 * @param client An implementation of WebChromeClient. 2650 */ 2651 public void setWebChromeClient(WebChromeClient client) { 2652 mCallbackProxy.setWebChromeClient(client); 2653 } 2654 2655 /** 2656 * Gets the chrome handler. 2657 * @return the current WebChromeClient instance. 2658 * 2659 * @hide API council approval. 2660 */ 2661 public WebChromeClient getWebChromeClient() { 2662 return mCallbackProxy.getWebChromeClient(); 2663 } 2664 2665 /** 2666 * Set the Picture listener. This is an interface used to receive 2667 * notifications of a new Picture. 2668 * @param listener An implementation of WebView.PictureListener. 2669 */ 2670 public void setPictureListener(PictureListener listener) { 2671 mPictureListener = listener; 2672 } 2673 2674 /** 2675 * {@hide} 2676 */ 2677 /* FIXME: Debug only! Remove for SDK! */ 2678 public void externalRepresentation(Message callback) { 2679 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2680 } 2681 2682 /** 2683 * {@hide} 2684 */ 2685 /* FIXME: Debug only! Remove for SDK! */ 2686 public void documentAsText(Message callback) { 2687 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2688 } 2689 2690 /** 2691 * Use this function to bind an object to Javascript so that the 2692 * methods can be accessed from Javascript. 2693 * <p><strong>IMPORTANT:</strong> 2694 * <ul> 2695 * <li> Using addJavascriptInterface() allows JavaScript to control your 2696 * application. This can be a very useful feature or a dangerous security 2697 * issue. When the HTML in the WebView is untrustworthy (for example, part 2698 * or all of the HTML is provided by some person or process), then an 2699 * attacker could inject HTML that will execute your code and possibly any 2700 * code of the attacker's choosing.<br> 2701 * Do not use addJavascriptInterface() unless all of the HTML in this 2702 * WebView was written by you.</li> 2703 * <li> The Java object that is bound runs in another thread and not in 2704 * the thread that it was constructed in.</li> 2705 * </ul></p> 2706 * @param obj The class instance to bind to Javascript 2707 * @param interfaceName The name to used to expose the class in Javascript 2708 */ 2709 public void addJavascriptInterface(Object obj, String interfaceName) { 2710 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2711 arg.mObject = obj; 2712 arg.mInterfaceName = interfaceName; 2713 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2714 } 2715 2716 /** 2717 * Return the WebSettings object used to control the settings for this 2718 * WebView. 2719 * @return A WebSettings object that can be used to control this WebView's 2720 * settings. 2721 */ 2722 public WebSettings getSettings() { 2723 return mWebViewCore.getSettings(); 2724 } 2725 2726 /** 2727 * Return the list of currently loaded plugins. 2728 * @return The list of currently loaded plugins. 2729 * 2730 * @deprecated This was used for Gears, which has been deprecated. 2731 */ 2732 @Deprecated 2733 public static synchronized PluginList getPluginList() { 2734 return null; 2735 } 2736 2737 /** 2738 * @deprecated This was used for Gears, which has been deprecated. 2739 */ 2740 @Deprecated 2741 public void refreshPlugins(boolean reloadOpenPages) { } 2742 2743 //------------------------------------------------------------------------- 2744 // Override View methods 2745 //------------------------------------------------------------------------- 2746 2747 @Override 2748 protected void finalize() throws Throwable { 2749 try { 2750 destroy(); 2751 } finally { 2752 super.finalize(); 2753 } 2754 } 2755 2756 @Override 2757 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 2758 if (child == mTitleBar) { 2759 // When drawing the title bar, move it horizontally to always show 2760 // at the top of the WebView. 2761 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 2762 } 2763 return super.drawChild(canvas, child, drawingTime); 2764 } 2765 2766 @Override 2767 protected void onDraw(Canvas canvas) { 2768 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 2769 if (mNativeClass == 0) { 2770 return; 2771 } 2772 int saveCount = canvas.save(); 2773 if (mTitleBar != null) { 2774 canvas.translate(0, (int) mTitleBar.getHeight()); 2775 } 2776 // Update the buttons in the picture, so when we draw the picture 2777 // to the screen, they are in the correct state. 2778 // Tell the native side if user is a) touching the screen, 2779 // b) pressing the trackball down, or c) pressing the enter key 2780 // If the cursor is on a button, we need to draw it in the pressed 2781 // state. 2782 // If mNativeClass is 0, we should not reach here, so we do not 2783 // need to check it again. 2784 nativeRecordButtons(hasFocus() && hasWindowFocus(), 2785 mTouchMode == TOUCH_SHORTPRESS_START_MODE 2786 || mTrackballDown || mGotCenterDown, false); 2787 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 2788 canvas.restoreToCount(saveCount); 2789 2790 // Now draw the shadow. 2791 if (mTitleBar != null) { 2792 int y = mScrollY + getVisibleTitleHeight(); 2793 int height = (int) (5f * getContext().getResources() 2794 .getDisplayMetrics().density); 2795 mTitleShadow.setBounds(mScrollX, y, mScrollX + getWidth(), 2796 y + height); 2797 mTitleShadow.draw(canvas); 2798 } 2799 if (AUTO_REDRAW_HACK && mAutoRedraw) { 2800 invalidate(); 2801 } 2802 } 2803 2804 @Override 2805 public void setLayoutParams(ViewGroup.LayoutParams params) { 2806 if (params.height == LayoutParams.WRAP_CONTENT) { 2807 mWrapContent = true; 2808 } 2809 super.setLayoutParams(params); 2810 } 2811 2812 @Override 2813 public boolean performLongClick() { 2814 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 2815 // Send the click so that the textfield is in focus 2816 // FIXME: When we start respecting changes to the native textfield's 2817 // selection, need to make sure that this does not change it. 2818 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 2819 nativeCursorNodePointer()); 2820 rebuildWebTextView(); 2821 } 2822 if (inEditingMode()) { 2823 return mWebTextView.performLongClick(); 2824 } else { 2825 return super.performLongClick(); 2826 } 2827 } 2828 2829 boolean inAnimateZoom() { 2830 return mZoomScale != 0; 2831 } 2832 2833 /** 2834 * Need to adjust the WebTextView after a change in zoom, since mActualScale 2835 * has changed. This is especially important for password fields, which are 2836 * drawn by the WebTextView, since it conveys more information than what 2837 * webkit draws. Thus we need to reposition it to show in the correct 2838 * place. 2839 */ 2840 private boolean mNeedToAdjustWebTextView; 2841 2842 private void drawCoreAndCursorRing(Canvas canvas, int color, 2843 boolean drawCursorRing) { 2844 if (mDrawHistory) { 2845 canvas.scale(mActualScale, mActualScale); 2846 canvas.drawPicture(mHistoryPicture); 2847 return; 2848 } 2849 2850 boolean animateZoom = mZoomScale != 0; 2851 boolean animateScroll = !mScroller.isFinished() 2852 || mVelocityTracker != null; 2853 if (animateZoom) { 2854 float zoomScale; 2855 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 2856 if (interval < ZOOM_ANIMATION_LENGTH) { 2857 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 2858 zoomScale = 1.0f / (mInvInitialZoomScale 2859 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 2860 invalidate(); 2861 } else { 2862 zoomScale = mZoomScale; 2863 // set mZoomScale to be 0 as we have done animation 2864 mZoomScale = 0; 2865 // call invalidate() again to draw with the final filters 2866 invalidate(); 2867 if (mNeedToAdjustWebTextView) { 2868 mNeedToAdjustWebTextView = false; 2869 Rect contentBounds = nativeFocusCandidateNodeBounds(); 2870 Rect vBox = contentToViewRect(contentBounds); 2871 Rect visibleRect = new Rect(); 2872 calcOurVisibleRect(visibleRect); 2873 if (visibleRect.contains(vBox)) { 2874 // As a result of the zoom, the textfield is now on 2875 // screen. Place the WebTextView in its new place, 2876 // accounting for our new scroll/zoom values. 2877 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 2878 contentToViewDimension( 2879 nativeFocusCandidateTextSize())); 2880 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 2881 vBox.height()); 2882 // If it is a password field, start drawing the 2883 // WebTextView once again. 2884 if (nativeFocusCandidateIsPassword()) { 2885 mWebTextView.setInPassword(true); 2886 } 2887 } else { 2888 // The textfield is now off screen. The user probably 2889 // was not zooming to see the textfield better. Remove 2890 // the WebTextView. If the user types a key, and the 2891 // textfield is still in focus, we will reconstruct 2892 // the WebTextView and scroll it back on screen. 2893 mWebTextView.remove(); 2894 } 2895 } 2896 } 2897 // calculate the intermediate scroll position. As we need to use 2898 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 2899 float scale = zoomScale * mInvInitialZoomScale; 2900 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 2901 - mZoomCenterX); 2902 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 2903 * zoomScale)) + mScrollX; 2904 int titleHeight = getTitleHeight(); 2905 int ty = Math.round(scale 2906 * (mInitialScrollY + mZoomCenterY - titleHeight) 2907 - (mZoomCenterY - titleHeight)); 2908 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 2909 - titleHeight, getViewHeight(), Math.round(mContentHeight 2910 * zoomScale)) + titleHeight) + mScrollY; 2911 canvas.translate(tx, ty); 2912 canvas.scale(zoomScale, zoomScale); 2913 if (inEditingMode() && !mNeedToAdjustWebTextView 2914 && mZoomScale != 0) { 2915 // The WebTextView is up. Keep track of this so we can adjust 2916 // its size and placement when we finish zooming 2917 mNeedToAdjustWebTextView = true; 2918 // If it is in password mode, turn it off so it does not draw 2919 // misplaced. 2920 if (nativeFocusCandidateIsPassword()) { 2921 mWebTextView.setInPassword(false); 2922 } 2923 } 2924 } else { 2925 canvas.scale(mActualScale, mActualScale); 2926 } 2927 2928 mWebViewCore.drawContentPicture(canvas, color, animateZoom, 2929 animateScroll); 2930 2931 if (mNativeClass == 0) return; 2932 if (mShiftIsPressed && !animateZoom) { 2933 if (mTouchSelection) { 2934 nativeDrawSelectionRegion(canvas); 2935 } else { 2936 nativeDrawSelection(canvas, mInvActualScale, getTitleHeight(), 2937 mSelectX, mSelectY, mExtendSelection); 2938 } 2939 } else if (drawCursorRing) { 2940 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 2941 mTouchMode = TOUCH_SHORTPRESS_MODE; 2942 HitTestResult hitTest = getHitTestResult(); 2943 if (hitTest != null && 2944 hitTest.mType != HitTestResult.UNKNOWN_TYPE) { 2945 mPrivateHandler.sendMessageDelayed(mPrivateHandler 2946 .obtainMessage(SWITCH_TO_LONGPRESS), 2947 LONG_PRESS_TIMEOUT); 2948 } 2949 } 2950 nativeDrawCursorRing(canvas); 2951 } 2952 // When the FindDialog is up, only draw the matches if we are not in 2953 // the process of scrolling them into view. 2954 if (mFindIsUp && !animateScroll) { 2955 nativeDrawMatches(canvas); 2956 } 2957 } 2958 2959 // draw history 2960 private boolean mDrawHistory = false; 2961 private Picture mHistoryPicture = null; 2962 private int mHistoryWidth = 0; 2963 private int mHistoryHeight = 0; 2964 2965 // Only check the flag, can be called from WebCore thread 2966 boolean drawHistory() { 2967 return mDrawHistory; 2968 } 2969 2970 // Should only be called in UI thread 2971 void switchOutDrawHistory() { 2972 if (null == mWebViewCore) return; // CallbackProxy may trigger this 2973 if (mDrawHistory && mWebViewCore.pictureReady()) { 2974 mDrawHistory = false; 2975 invalidate(); 2976 int oldScrollX = mScrollX; 2977 int oldScrollY = mScrollY; 2978 mScrollX = pinLocX(mScrollX); 2979 mScrollY = pinLocY(mScrollY); 2980 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 2981 mUserScroll = false; 2982 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 2983 oldScrollY); 2984 } 2985 sendOurVisibleRect(); 2986 } 2987 } 2988 2989 WebViewCore.CursorData cursorData() { 2990 WebViewCore.CursorData result = new WebViewCore.CursorData(); 2991 result.mMoveGeneration = nativeMoveGeneration(); 2992 result.mFrame = nativeCursorFramePointer(); 2993 Point position = nativeCursorPosition(); 2994 result.mX = position.x; 2995 result.mY = position.y; 2996 return result; 2997 } 2998 2999 /** 3000 * Delete text from start to end in the focused textfield. If there is no 3001 * focus, or if start == end, silently fail. If start and end are out of 3002 * order, swap them. 3003 * @param start Beginning of selection to delete. 3004 * @param end End of selection to delete. 3005 */ 3006 /* package */ void deleteSelection(int start, int end) { 3007 mTextGeneration++; 3008 WebViewCore.TextSelectionData data 3009 = new WebViewCore.TextSelectionData(start, end); 3010 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3011 data); 3012 } 3013 3014 /** 3015 * Set the selection to (start, end) in the focused textfield. If start and 3016 * end are out of order, swap them. 3017 * @param start Beginning of selection. 3018 * @param end End of selection. 3019 */ 3020 /* package */ void setSelection(int start, int end) { 3021 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3022 } 3023 3024 // Called by JNI when a touch event puts a textfield into focus. 3025 private void displaySoftKeyboard(boolean isTextView) { 3026 InputMethodManager imm = (InputMethodManager) 3027 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3028 3029 if (isTextView) { 3030 if (mWebTextView == null) return; 3031 3032 imm.showSoftInput(mWebTextView, 0); 3033 if (mInZoomOverview) { 3034 // if in zoom overview mode, call doDoubleTap() to bring it back 3035 // to normal mode so that user can enter text. 3036 doDoubleTap(); 3037 } 3038 } 3039 else { // used by plugins 3040 imm.showSoftInput(this, 0); 3041 } 3042 } 3043 3044 // Called by WebKit to instruct the UI to hide the keyboard 3045 private void hideSoftKeyboard() { 3046 InputMethodManager imm = (InputMethodManager) 3047 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3048 3049 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3050 } 3051 3052 /* 3053 * This method checks the current focus and cursor and potentially rebuilds 3054 * mWebTextView to have the appropriate properties, such as password, 3055 * multiline, and what text it contains. It also removes it if necessary. 3056 */ 3057 /* package */ void rebuildWebTextView() { 3058 // If the WebView does not have focus, do nothing until it gains focus. 3059 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3060 return; 3061 } 3062 boolean alreadyThere = inEditingMode(); 3063 // inEditingMode can only return true if mWebTextView is non-null, 3064 // so we can safely call remove() if (alreadyThere) 3065 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3066 if (alreadyThere) { 3067 mWebTextView.remove(); 3068 } 3069 return; 3070 } 3071 // At this point, we know we have found an input field, so go ahead 3072 // and create the WebTextView if necessary. 3073 if (mWebTextView == null) { 3074 mWebTextView = new WebTextView(mContext, WebView.this); 3075 // Initialize our generation number. 3076 mTextGeneration = 0; 3077 } 3078 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3079 contentToViewDimension(nativeFocusCandidateTextSize())); 3080 Rect visibleRect = new Rect(); 3081 calcOurContentVisibleRect(visibleRect); 3082 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3083 // should be in content coordinates. 3084 Rect bounds = nativeFocusCandidateNodeBounds(); 3085 if (!Rect.intersects(bounds, visibleRect)) { 3086 mWebTextView.bringIntoView(); 3087 } 3088 String text = nativeFocusCandidateText(); 3089 int nodePointer = nativeFocusCandidatePointer(); 3090 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3091 // It is possible that we have the same textfield, but it has moved, 3092 // i.e. In the case of opening/closing the screen. 3093 // In that case, we need to set the dimensions, but not the other 3094 // aspects. 3095 // We also need to restore the selection, which gets wrecked by 3096 // calling setTextEntryRect. 3097 Spannable spannable = (Spannable) mWebTextView.getText(); 3098 int start = Selection.getSelectionStart(spannable); 3099 int end = Selection.getSelectionEnd(spannable); 3100 // If the text has been changed by webkit, update it. However, if 3101 // there has been more UI text input, ignore it. We will receive 3102 // another update when that text is recognized. 3103 if (text != null && !text.equals(spannable.toString()) 3104 && nativeTextGeneration() == mTextGeneration) { 3105 mWebTextView.setTextAndKeepSelection(text); 3106 } else { 3107 Selection.setSelection(spannable, start, end); 3108 } 3109 } else { 3110 Rect vBox = contentToViewRect(bounds); 3111 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3112 vBox.height()); 3113 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3114 Gravity.RIGHT : Gravity.NO_GRAVITY); 3115 // this needs to be called before update adapter thread starts to 3116 // ensure the mWebTextView has the same node pointer 3117 mWebTextView.setNodePointer(nodePointer); 3118 int maxLength = -1; 3119 boolean isTextField = nativeFocusCandidateIsTextField(); 3120 if (isTextField) { 3121 maxLength = nativeFocusCandidateMaxLength(); 3122 String name = nativeFocusCandidateName(); 3123 if (mWebViewCore.getSettings().getSaveFormData() 3124 && name != null) { 3125 Message update = mPrivateHandler.obtainMessage( 3126 REQUEST_FORM_DATA, nodePointer); 3127 RequestFormData updater = new RequestFormData(name, 3128 getUrl(), update); 3129 Thread t = new Thread(updater); 3130 t.start(); 3131 } 3132 } 3133 mWebTextView.setMaxLength(maxLength); 3134 AutoCompleteAdapter adapter = null; 3135 mWebTextView.setAdapterCustom(adapter); 3136 mWebTextView.setSingleLine(isTextField); 3137 mWebTextView.setInPassword(nativeFocusCandidateIsPassword()); 3138 if (null == text) { 3139 mWebTextView.setText("", 0, 0); 3140 if (DebugFlags.WEB_VIEW) { 3141 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3142 } 3143 } else { 3144 // Change to true to enable the old style behavior, where 3145 // entering a textfield/textarea always set the selection to the 3146 // whole field. This was desirable for the case where the user 3147 // intends to scroll past the field using the trackball. 3148 // However, it causes a problem when replying to emails - the 3149 // user expects the cursor to be at the beginning of the 3150 // textarea. Testing out a new behavior, where textfields set 3151 // selection at the end, and textareas at the beginning. 3152 if (false) { 3153 mWebTextView.setText(text, 0, text.length()); 3154 } else if (isTextField) { 3155 int length = text.length(); 3156 mWebTextView.setText(text, length, length); 3157 if (DebugFlags.WEB_VIEW) { 3158 Log.v(LOGTAG, "rebuildWebTextView length=" + length); 3159 } 3160 } else { 3161 mWebTextView.setText(text, 0, 0); 3162 if (DebugFlags.WEB_VIEW) { 3163 Log.v(LOGTAG, "rebuildWebTextView !isTextField"); 3164 } 3165 } 3166 } 3167 mWebTextView.requestFocus(); 3168 } 3169 } 3170 3171 /* 3172 * This class requests an Adapter for the WebTextView which shows past 3173 * entries stored in the database. It is a Runnable so that it can be done 3174 * in its own thread, without slowing down the UI. 3175 */ 3176 private class RequestFormData implements Runnable { 3177 private String mName; 3178 private String mUrl; 3179 private Message mUpdateMessage; 3180 3181 public RequestFormData(String name, String url, Message msg) { 3182 mName = name; 3183 mUrl = url; 3184 mUpdateMessage = msg; 3185 } 3186 3187 public void run() { 3188 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3189 if (pastEntries.size() > 0) { 3190 AutoCompleteAdapter adapter = new 3191 AutoCompleteAdapter(mContext, pastEntries); 3192 mUpdateMessage.obj = adapter; 3193 mUpdateMessage.sendToTarget(); 3194 } 3195 } 3196 } 3197 3198 // This is used to determine long press with the center key. Does not 3199 // affect long press with the trackball/touch. 3200 private boolean mGotCenterDown = false; 3201 3202 @Override 3203 public boolean onKeyDown(int keyCode, KeyEvent event) { 3204 if (DebugFlags.WEB_VIEW) { 3205 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3206 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3207 } 3208 3209 if (mNativeClass == 0) { 3210 return false; 3211 } 3212 3213 // do this hack up front, so it always works, regardless of touch-mode 3214 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3215 mAutoRedraw = !mAutoRedraw; 3216 if (mAutoRedraw) { 3217 invalidate(); 3218 } 3219 return true; 3220 } 3221 3222 // Bubble up the key event if 3223 // 1. it is a system key; or 3224 // 2. the host application wants to handle it; 3225 if (event.isSystem() 3226 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3227 return false; 3228 } 3229 3230 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3231 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3232 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3233 mExtendSelection = false; 3234 mShiftIsPressed = true; 3235 if (nativeHasCursorNode()) { 3236 Rect rect = nativeCursorNodeBounds(); 3237 mSelectX = contentToViewX(rect.left); 3238 mSelectY = contentToViewY(rect.top); 3239 } else { 3240 mSelectX = mScrollX + (int) mLastTouchX; 3241 mSelectY = mScrollY + (int) mLastTouchY; 3242 } 3243 nativeHideCursor(); 3244 } 3245 3246 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3247 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3248 // always handle the navigation keys in the UI thread 3249 switchOutDrawHistory(); 3250 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3251 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3252 return true; 3253 } 3254 // Bubble up the key event as WebView doesn't handle it 3255 return false; 3256 } 3257 3258 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3259 switchOutDrawHistory(); 3260 if (event.getRepeatCount() == 0) { 3261 mGotCenterDown = true; 3262 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3263 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3264 // Already checked mNativeClass, so we do not need to check it 3265 // again. 3266 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3267 return true; 3268 } 3269 // Bubble up the key event as WebView doesn't handle it 3270 return false; 3271 } 3272 3273 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3274 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3275 // turn off copy select if a shift-key combo is pressed 3276 mExtendSelection = mShiftIsPressed = false; 3277 if (mTouchMode == TOUCH_SELECT_MODE) { 3278 mTouchMode = TOUCH_INIT_MODE; 3279 } 3280 } 3281 3282 if (getSettings().getNavDump()) { 3283 switch (keyCode) { 3284 case KeyEvent.KEYCODE_4: 3285 // "/data/data/com.android.browser/displayTree.txt" 3286 nativeDumpDisplayTree(getUrl()); 3287 break; 3288 case KeyEvent.KEYCODE_5: 3289 case KeyEvent.KEYCODE_6: 3290 // 5: dump the dom tree to the file 3291 // "/data/data/com.android.browser/domTree.txt" 3292 // 6: dump the dom tree to the adb log 3293 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, 3294 (keyCode == KeyEvent.KEYCODE_5) ? 1 : 0, 0); 3295 break; 3296 case KeyEvent.KEYCODE_7: 3297 case KeyEvent.KEYCODE_8: 3298 // 7: dump the render tree to the file 3299 // "/data/data/com.android.browser/renderTree.txt" 3300 // 8: dump the render tree to the adb log 3301 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, 3302 (keyCode == KeyEvent.KEYCODE_7) ? 1 : 0, 0); 3303 break; 3304 case KeyEvent.KEYCODE_9: 3305 nativeInstrumentReport(); 3306 return true; 3307 } 3308 } 3309 3310 if (nativeCursorIsPlugin()) { 3311 nativeUpdatePluginReceivesEvents(); 3312 invalidate(); 3313 } else if (nativeCursorIsTextInput()) { 3314 // This message will put the node in focus, for the DOM's notion 3315 // of focus, and make the focuscontroller active 3316 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3317 nativeCursorNodePointer()); 3318 // This will bring up the WebTextView and put it in focus, for 3319 // our view system's notion of focus 3320 rebuildWebTextView(); 3321 // Now we need to pass the event to it 3322 return mWebTextView.onKeyDown(keyCode, event); 3323 } else if (nativeHasFocusNode()) { 3324 // In this case, the cursor is not on a text input, but the focus 3325 // might be. Check it, and if so, hand over to the WebTextView. 3326 rebuildWebTextView(); 3327 if (inEditingMode()) { 3328 return mWebTextView.onKeyDown(keyCode, event); 3329 } 3330 } 3331 3332 // TODO: should we pass all the keys to DOM or check the meta tag 3333 if (nativeCursorWantsKeyEvents() || true) { 3334 // pass the key to DOM 3335 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3336 // return true as DOM handles the key 3337 return true; 3338 } 3339 3340 // Bubble up the key event as WebView doesn't handle it 3341 return false; 3342 } 3343 3344 @Override 3345 public boolean onKeyUp(int keyCode, KeyEvent event) { 3346 if (DebugFlags.WEB_VIEW) { 3347 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3348 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3349 } 3350 3351 if (mNativeClass == 0) { 3352 return false; 3353 } 3354 3355 // special CALL handling when cursor node's href is "tel:XXX" 3356 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3357 String text = nativeCursorText(); 3358 if (!nativeCursorIsTextInput() && text != null 3359 && text.startsWith(SCHEME_TEL)) { 3360 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3361 getContext().startActivity(intent); 3362 return true; 3363 } 3364 } 3365 3366 // Bubble up the key event if 3367 // 1. it is a system key; or 3368 // 2. the host application wants to handle it; 3369 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3370 return false; 3371 } 3372 3373 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3374 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3375 if (commitCopy()) { 3376 return true; 3377 } 3378 } 3379 3380 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3381 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3382 // always handle the navigation keys in the UI thread 3383 // Bubble up the key event as WebView doesn't handle it 3384 return false; 3385 } 3386 3387 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3388 // remove the long press message first 3389 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3390 mGotCenterDown = false; 3391 3392 if (mShiftIsPressed) { 3393 return false; 3394 } 3395 3396 // perform the single click 3397 Rect visibleRect = sendOurVisibleRect(); 3398 // Note that sendOurVisibleRect calls viewToContent, so the 3399 // coordinates should be in content coordinates. 3400 if (!nativeCursorIntersects(visibleRect)) { 3401 return false; 3402 } 3403 nativeSetFollowedLink(true); 3404 nativeUpdatePluginReceivesEvents(); 3405 WebViewCore.CursorData data = cursorData(); 3406 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3407 playSoundEffect(SoundEffectConstants.CLICK); 3408 boolean isTextInput = nativeCursorIsTextInput(); 3409 if (isTextInput || !mCallbackProxy.uiOverrideUrlLoading( 3410 nativeCursorText())) { 3411 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3412 nativeCursorNodePointer()); 3413 } 3414 if (isTextInput) { 3415 rebuildWebTextView(); 3416 displaySoftKeyboard(true); 3417 } 3418 return true; 3419 } 3420 3421 // TODO: should we pass all the keys to DOM or check the meta tag 3422 if (nativeCursorWantsKeyEvents() || true) { 3423 // pass the key to DOM 3424 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3425 // return true as DOM handles the key 3426 return true; 3427 } 3428 3429 // Bubble up the key event as WebView doesn't handle it 3430 return false; 3431 } 3432 3433 /** 3434 * @hide 3435 */ 3436 public void emulateShiftHeld() { 3437 if (0 == mNativeClass) return; // client isn't initialized 3438 mExtendSelection = false; 3439 mShiftIsPressed = true; 3440 nativeHideCursor(); 3441 } 3442 3443 private boolean commitCopy() { 3444 boolean copiedSomething = false; 3445 if (mExtendSelection) { 3446 // copy region so core operates on copy without touching orig. 3447 Region selection = new Region(nativeGetSelection()); 3448 if (selection.isEmpty() == false) { 3449 Toast.makeText(mContext 3450 , com.android.internal.R.string.text_copied 3451 , Toast.LENGTH_SHORT).show(); 3452 mWebViewCore.sendMessage(EventHub.GET_SELECTION, selection); 3453 copiedSomething = true; 3454 } 3455 mExtendSelection = false; 3456 } 3457 mShiftIsPressed = false; 3458 if (mTouchMode == TOUCH_SELECT_MODE) { 3459 mTouchMode = TOUCH_INIT_MODE; 3460 } 3461 return copiedSomething; 3462 } 3463 3464 // Set this as a hierarchy change listener so we can know when this view 3465 // is removed and still have access to our parent. 3466 @Override 3467 protected void onAttachedToWindow() { 3468 super.onAttachedToWindow(); 3469 ViewParent parent = getParent(); 3470 if (parent instanceof ViewGroup) { 3471 ViewGroup p = (ViewGroup) parent; 3472 p.setOnHierarchyChangeListener(this); 3473 } 3474 } 3475 3476 @Override 3477 protected void onDetachedFromWindow() { 3478 super.onDetachedFromWindow(); 3479 ViewParent parent = getParent(); 3480 if (parent instanceof ViewGroup) { 3481 ViewGroup p = (ViewGroup) parent; 3482 p.setOnHierarchyChangeListener(null); 3483 } 3484 3485 // Clean up the zoom controller 3486 mZoomButtonsController.setVisible(false); 3487 } 3488 3489 // Implementation for OnHierarchyChangeListener 3490 public void onChildViewAdded(View parent, View child) {} 3491 3492 public void onChildViewRemoved(View p, View child) { 3493 if (child == this) { 3494 clearTextEntry(); 3495 } 3496 } 3497 3498 /** 3499 * @deprecated WebView should not have implemented 3500 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3501 * does nothing now. 3502 */ 3503 @Deprecated 3504 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3505 } 3506 3507 // To avoid drawing the cursor ring, and remove the TextView when our window 3508 // loses focus. 3509 @Override 3510 public void onWindowFocusChanged(boolean hasWindowFocus) { 3511 if (hasWindowFocus) { 3512 if (hasFocus()) { 3513 // If our window regained focus, and we have focus, then begin 3514 // drawing the cursor ring 3515 mDrawCursorRing = true; 3516 if (mNativeClass != 0) { 3517 nativeRecordButtons(true, false, true); 3518 if (inEditingMode()) { 3519 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3520 } 3521 } 3522 } else { 3523 // If our window gained focus, but we do not have it, do not 3524 // draw the cursor ring. 3525 mDrawCursorRing = false; 3526 // We do not call nativeRecordButtons here because we assume 3527 // that when we lost focus, or window focus, it got called with 3528 // false for the first parameter 3529 } 3530 } else { 3531 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3532 /* 3533 * The zoom controls come in their own window, so our window 3534 * loses focus. Our policy is to not draw the cursor ring if 3535 * our window is not focused, but this is an exception since 3536 * the user can still navigate the web page with the zoom 3537 * controls showing. 3538 */ 3539 // If our window has lost focus, stop drawing the cursor ring 3540 mDrawCursorRing = false; 3541 } 3542 mGotKeyDown = false; 3543 mShiftIsPressed = false; 3544 if (mNativeClass != 0) { 3545 nativeRecordButtons(false, false, true); 3546 } 3547 setFocusControllerInactive(); 3548 } 3549 invalidate(); 3550 super.onWindowFocusChanged(hasWindowFocus); 3551 } 3552 3553 /* 3554 * Pass a message to WebCore Thread, telling the WebCore::Page's 3555 * FocusController to be "inactive" so that it will 3556 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3557 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3558 */ 3559 /* package */ void setFocusControllerInactive() { 3560 // Do not need to also check whether mWebViewCore is null, because 3561 // mNativeClass is only set if mWebViewCore is non null 3562 if (mNativeClass == 0) return; 3563 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 3564 } 3565 3566 @Override 3567 protected void onFocusChanged(boolean focused, int direction, 3568 Rect previouslyFocusedRect) { 3569 if (DebugFlags.WEB_VIEW) { 3570 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3571 } 3572 if (focused) { 3573 // When we regain focus, if we have window focus, resume drawing 3574 // the cursor ring 3575 if (hasWindowFocus()) { 3576 mDrawCursorRing = true; 3577 if (mNativeClass != 0) { 3578 nativeRecordButtons(true, false, true); 3579 } 3580 //} else { 3581 // The WebView has gained focus while we do not have 3582 // windowfocus. When our window lost focus, we should have 3583 // called nativeRecordButtons(false...) 3584 } 3585 } else { 3586 // When we lost focus, unless focus went to the TextView (which is 3587 // true if we are in editing mode), stop drawing the cursor ring. 3588 if (!inEditingMode()) { 3589 mDrawCursorRing = false; 3590 if (mNativeClass != 0) { 3591 nativeRecordButtons(false, false, true); 3592 } 3593 setFocusControllerInactive(); 3594 } 3595 mGotKeyDown = false; 3596 } 3597 3598 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3599 } 3600 3601 @Override 3602 protected void onSizeChanged(int w, int h, int ow, int oh) { 3603 super.onSizeChanged(w, h, ow, oh); 3604 // Center zooming to the center of the screen. 3605 if (mZoomScale == 0) { // unless we're already zooming 3606 mZoomCenterX = getViewWidth() * .5f; 3607 mZoomCenterY = getViewHeight() * .5f; 3608 } 3609 3610 // update mMinZoomScale if the minimum zoom scale is not fixed 3611 if (!mMinZoomScaleFixed) { 3612 // when change from narrow screen to wide screen, the new viewWidth 3613 // can be wider than the old content width. We limit the minimum 3614 // scale to 1.0f. The proper minimum scale will be calculated when 3615 // the new picture shows up. 3616 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 3617 / (mDrawHistory ? mHistoryPicture.getWidth() 3618 : mZoomOverviewWidth)); 3619 } 3620 3621 // we always force, in case our height changed, in which case we still 3622 // want to send the notification over to webkit 3623 setNewZoomScale(mActualScale, true); 3624 } 3625 3626 @Override 3627 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 3628 super.onScrollChanged(l, t, oldl, oldt); 3629 3630 sendOurVisibleRect(); 3631 } 3632 3633 3634 @Override 3635 public boolean dispatchKeyEvent(KeyEvent event) { 3636 boolean dispatch = true; 3637 3638 if (!inEditingMode()) { 3639 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3640 mGotKeyDown = true; 3641 } else { 3642 if (!mGotKeyDown) { 3643 /* 3644 * We got a key up for which we were not the recipient of 3645 * the original key down. Don't give it to the view. 3646 */ 3647 dispatch = false; 3648 } 3649 mGotKeyDown = false; 3650 } 3651 } 3652 3653 if (dispatch) { 3654 return super.dispatchKeyEvent(event); 3655 } else { 3656 // We didn't dispatch, so let something else handle the key 3657 return false; 3658 } 3659 } 3660 3661 // Here are the snap align logic: 3662 // 1. If it starts nearly horizontally or vertically, snap align; 3663 // 2. If there is a dramitic direction change, let it go; 3664 // 3. If there is a same direction back and forth, lock it. 3665 3666 // adjustable parameters 3667 private int mMinLockSnapReverseDistance; 3668 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 3669 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 3670 3671 @Override 3672 public boolean onTouchEvent(MotionEvent ev) { 3673 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 3674 return false; 3675 } 3676 3677 if (DebugFlags.WEB_VIEW) { 3678 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 3679 + mTouchMode); 3680 } 3681 3682 int action = ev.getAction(); 3683 float x = ev.getX(); 3684 float y = ev.getY(); 3685 long eventTime = ev.getEventTime(); 3686 3687 // Due to the touch screen edge effect, a touch closer to the edge 3688 // always snapped to the edge. As getViewWidth() can be different from 3689 // getWidth() due to the scrollbar, adjusting the point to match 3690 // getViewWidth(). Same applied to the height. 3691 if (x > getViewWidth() - 1) { 3692 x = getViewWidth() - 1; 3693 } 3694 if (y > getViewHeightWithTitle() - 1) { 3695 y = getViewHeightWithTitle() - 1; 3696 } 3697 3698 // pass the touch events from UI thread to WebCore thread 3699 if (mForwardTouchEvents && (action != MotionEvent.ACTION_MOVE 3700 || eventTime - mLastSentTouchTime > TOUCH_SENT_INTERVAL)) { 3701 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 3702 ted.mAction = action; 3703 ted.mX = viewToContentX((int) x + mScrollX); 3704 ted.mY = viewToContentY((int) y + mScrollY); 3705 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 3706 mLastSentTouchTime = eventTime; 3707 } 3708 3709 int deltaX = (int) (mLastTouchX - x); 3710 int deltaY = (int) (mLastTouchY - y); 3711 3712 switch (action) { 3713 case MotionEvent.ACTION_DOWN: { 3714 mPreventDrag = PREVENT_DRAG_NO; 3715 if (!mScroller.isFinished()) { 3716 // stop the current scroll animation, but if this is 3717 // the start of a fling, allow it to add to the current 3718 // fling's velocity 3719 mScroller.abortAnimation(); 3720 mTouchMode = TOUCH_DRAG_START_MODE; 3721 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 3722 } else if (mShiftIsPressed) { 3723 mSelectX = mScrollX + (int) x; 3724 mSelectY = mScrollY + (int) y; 3725 mTouchMode = TOUCH_SELECT_MODE; 3726 if (DebugFlags.WEB_VIEW) { 3727 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 3728 } 3729 nativeMoveSelection(viewToContentX(mSelectX), 3730 viewToContentY(mSelectY), false); 3731 mTouchSelection = mExtendSelection = true; 3732 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 3733 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 3734 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 3735 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 3736 } else { 3737 // commit the short press action for the previous tap 3738 doShortPress(); 3739 // continue, mTouchMode should be still TOUCH_INIT_MODE 3740 } 3741 } else { 3742 mTouchMode = TOUCH_INIT_MODE; 3743 mPreventDrag = mForwardTouchEvents ? PREVENT_DRAG_MAYBE_YES 3744 : PREVENT_DRAG_NO; 3745 mWebViewCore.sendMessage( 3746 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 3747 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 3748 EventLog.writeEvent(EVENT_LOG_DOUBLE_TAP_DURATION, 3749 (eventTime - mLastTouchUpTime), eventTime); 3750 } 3751 } 3752 // Trigger the link 3753 if (mTouchMode == TOUCH_INIT_MODE 3754 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 3755 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3756 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 3757 } 3758 // Remember where the motion event started 3759 mLastTouchX = x; 3760 mLastTouchY = y; 3761 mLastTouchTime = eventTime; 3762 mVelocityTracker = VelocityTracker.obtain(); 3763 mSnapScrollMode = SNAP_NONE; 3764 break; 3765 } 3766 case MotionEvent.ACTION_MOVE: { 3767 if (mTouchMode == TOUCH_DONE_MODE) { 3768 // no dragging during scroll zoom animation 3769 break; 3770 } 3771 mVelocityTracker.addMovement(ev); 3772 3773 if (mTouchMode != TOUCH_DRAG_MODE) { 3774 if (mTouchMode == TOUCH_SELECT_MODE) { 3775 mSelectX = mScrollX + (int) x; 3776 mSelectY = mScrollY + (int) y; 3777 if (DebugFlags.WEB_VIEW) { 3778 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 3779 } 3780 nativeMoveSelection(viewToContentX(mSelectX), 3781 viewToContentY(mSelectY), true); 3782 invalidate(); 3783 break; 3784 } 3785 if ((deltaX * deltaX + deltaY * deltaY) < mTouchSlopSquare) { 3786 break; 3787 } 3788 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 3789 // track mLastTouchTime as we may need to do fling at 3790 // ACTION_UP 3791 mLastTouchTime = eventTime; 3792 break; 3793 } 3794 if (mTouchMode == TOUCH_SHORTPRESS_MODE 3795 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3796 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3797 } else if (mTouchMode == TOUCH_INIT_MODE 3798 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 3799 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3800 } 3801 3802 // if it starts nearly horizontal or vertical, enforce it 3803 int ax = Math.abs(deltaX); 3804 int ay = Math.abs(deltaY); 3805 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 3806 mSnapScrollMode = SNAP_X; 3807 mSnapPositive = deltaX > 0; 3808 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 3809 mSnapScrollMode = SNAP_Y; 3810 mSnapPositive = deltaY > 0; 3811 } 3812 3813 mTouchMode = TOUCH_DRAG_MODE; 3814 WebViewCore.pauseUpdate(mWebViewCore); 3815 if (!mDragFromTextInput) { 3816 nativeHideCursor(); 3817 } 3818 WebSettings settings = getSettings(); 3819 if (settings.supportZoom() 3820 && settings.getBuiltInZoomControls() 3821 && !mZoomButtonsController.isVisible() 3822 && mMinZoomScale < mMaxZoomScale) { 3823 mZoomButtonsController.setVisible(true); 3824 int count = settings.getDoubleTapToastCount(); 3825 if (mInZoomOverview && count > 0) { 3826 settings.setDoubleTapToastCount(--count); 3827 Toast.makeText(mContext, 3828 com.android.internal.R.string.double_tap_toast, 3829 Toast.LENGTH_LONG).show(); 3830 } 3831 } 3832 } 3833 3834 // do pan 3835 int newScrollX = pinLocX(mScrollX + deltaX); 3836 deltaX = newScrollX - mScrollX; 3837 int newScrollY = pinLocY(mScrollY + deltaY); 3838 deltaY = newScrollY - mScrollY; 3839 boolean done = false; 3840 if (deltaX == 0 && deltaY == 0) { 3841 done = true; 3842 } else { 3843 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 3844 int ax = Math.abs(deltaX); 3845 int ay = Math.abs(deltaY); 3846 if (mSnapScrollMode == SNAP_X) { 3847 // radical change means getting out of snap mode 3848 if (ay > MAX_SLOPE_FOR_DIAG * ax 3849 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3850 mSnapScrollMode = SNAP_NONE; 3851 } 3852 // reverse direction means lock in the snap mode 3853 if ((ax > MAX_SLOPE_FOR_DIAG * ay) && 3854 ((mSnapPositive && 3855 deltaX < -mMinLockSnapReverseDistance) 3856 || (!mSnapPositive && 3857 deltaX > mMinLockSnapReverseDistance))) { 3858 mSnapScrollMode = SNAP_X_LOCK; 3859 } 3860 } else { 3861 // radical change means getting out of snap mode 3862 if ((ax > MAX_SLOPE_FOR_DIAG * ay) 3863 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3864 mSnapScrollMode = SNAP_NONE; 3865 } 3866 // reverse direction means lock in the snap mode 3867 if ((ay > MAX_SLOPE_FOR_DIAG * ax) && 3868 ((mSnapPositive && 3869 deltaY < -mMinLockSnapReverseDistance) 3870 || (!mSnapPositive && 3871 deltaY > mMinLockSnapReverseDistance))) { 3872 mSnapScrollMode = SNAP_Y_LOCK; 3873 } 3874 } 3875 } 3876 3877 if (mSnapScrollMode == SNAP_X 3878 || mSnapScrollMode == SNAP_X_LOCK) { 3879 if (deltaX == 0) { 3880 // keep the scrollbar on the screen even there is no 3881 // scroll 3882 awakenScrollBars(ViewConfiguration 3883 .getScrollDefaultDelay(), false); 3884 } else { 3885 scrollBy(deltaX, 0); 3886 } 3887 mLastTouchX = x; 3888 } else if (mSnapScrollMode == SNAP_Y 3889 || mSnapScrollMode == SNAP_Y_LOCK) { 3890 if (deltaY == 0) { 3891 // keep the scrollbar on the screen even there is no 3892 // scroll 3893 awakenScrollBars(ViewConfiguration 3894 .getScrollDefaultDelay(), false); 3895 } else { 3896 scrollBy(0, deltaY); 3897 } 3898 mLastTouchY = y; 3899 } else { 3900 scrollBy(deltaX, deltaY); 3901 mLastTouchX = x; 3902 mLastTouchY = y; 3903 } 3904 mLastTouchTime = eventTime; 3905 mUserScroll = true; 3906 } 3907 3908 if (!getSettings().getBuiltInZoomControls()) { 3909 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 3910 if (mZoomControls != null && showPlusMinus) { 3911 if (mZoomControls.getVisibility() == View.VISIBLE) { 3912 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 3913 } else { 3914 mZoomControls.show(showPlusMinus, false); 3915 } 3916 mPrivateHandler.postDelayed(mZoomControlRunnable, 3917 ZOOM_CONTROLS_TIMEOUT); 3918 } 3919 } 3920 3921 if (done) { 3922 // keep the scrollbar on the screen even there is no scroll 3923 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 3924 false); 3925 // return false to indicate that we can't pan out of the 3926 // view space 3927 return false; 3928 } 3929 break; 3930 } 3931 case MotionEvent.ACTION_UP: { 3932 mLastTouchUpTime = eventTime; 3933 switch (mTouchMode) { 3934 case TOUCH_DOUBLE_TAP_MODE: // double tap 3935 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3936 mTouchMode = TOUCH_DONE_MODE; 3937 doDoubleTap(); 3938 break; 3939 case TOUCH_SELECT_MODE: 3940 commitCopy(); 3941 mTouchSelection = false; 3942 break; 3943 case TOUCH_INIT_MODE: // tap 3944 case TOUCH_SHORTPRESS_START_MODE: 3945 case TOUCH_SHORTPRESS_MODE: 3946 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3947 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3948 if ((deltaX * deltaX + deltaY * deltaY) > mTouchSlopSquare) { 3949 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 3950 " WebCore's response for touch down."); 3951 if (computeHorizontalScrollExtent() < computeHorizontalScrollRange() 3952 || computeVerticalScrollExtent() < computeVerticalScrollRange()) { 3953 // we will not rewrite drag code here, but we 3954 // will try fling if it applies. 3955 WebViewCore.pauseUpdate(mWebViewCore); 3956 // fall through to TOUCH_DRAG_MODE 3957 } else { 3958 break; 3959 } 3960 } else { 3961 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 3962 // if mPreventDrag is not confirmed, treat it as 3963 // no so that it won't block tap or double tap. 3964 mPreventDrag = PREVENT_DRAG_NO; 3965 } 3966 if (mPreventDrag == PREVENT_DRAG_NO) { 3967 if (mTouchMode == TOUCH_INIT_MODE) { 3968 mPrivateHandler.sendMessageDelayed( 3969 mPrivateHandler.obtainMessage( 3970 RELEASE_SINGLE_TAP), 3971 ViewConfiguration.getDoubleTapTimeout()); 3972 } else { 3973 mTouchMode = TOUCH_DONE_MODE; 3974 doShortPress(); 3975 } 3976 } 3977 break; 3978 } 3979 case TOUCH_DRAG_MODE: 3980 // redraw in high-quality, as we're done dragging 3981 invalidate(); 3982 // if the user waits a while w/o moving before the 3983 // up, we don't want to do a fling 3984 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 3985 mVelocityTracker.addMovement(ev); 3986 doFling(); 3987 break; 3988 } 3989 mLastVelocity = 0; 3990 WebViewCore.resumeUpdate(mWebViewCore); 3991 break; 3992 case TOUCH_DRAG_START_MODE: 3993 case TOUCH_DONE_MODE: 3994 // do nothing 3995 break; 3996 } 3997 // we also use mVelocityTracker == null to tell us that we are 3998 // not "moving around", so we can take the slower/prettier 3999 // mode in the drawing code 4000 if (mVelocityTracker != null) { 4001 mVelocityTracker.recycle(); 4002 mVelocityTracker = null; 4003 } 4004 break; 4005 } 4006 case MotionEvent.ACTION_CANCEL: { 4007 // we also use mVelocityTracker == null to tell us that we are 4008 // not "moving around", so we can take the slower/prettier 4009 // mode in the drawing code 4010 if (mVelocityTracker != null) { 4011 mVelocityTracker.recycle(); 4012 mVelocityTracker = null; 4013 } 4014 if (mTouchMode == TOUCH_DRAG_MODE) { 4015 WebViewCore.resumeUpdate(mWebViewCore); 4016 } 4017 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4018 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4019 mTouchMode = TOUCH_DONE_MODE; 4020 nativeHideCursor(); 4021 break; 4022 } 4023 } 4024 return true; 4025 } 4026 4027 private long mTrackballFirstTime = 0; 4028 private long mTrackballLastTime = 0; 4029 private float mTrackballRemainsX = 0.0f; 4030 private float mTrackballRemainsY = 0.0f; 4031 private int mTrackballXMove = 0; 4032 private int mTrackballYMove = 0; 4033 private boolean mExtendSelection = false; 4034 private boolean mTouchSelection = false; 4035 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4036 private static final int TRACKBALL_TIMEOUT = 200; 4037 private static final int TRACKBALL_WAIT = 100; 4038 private static final int TRACKBALL_SCALE = 400; 4039 private static final int TRACKBALL_SCROLL_COUNT = 5; 4040 private static final int TRACKBALL_MOVE_COUNT = 10; 4041 private static final int TRACKBALL_MULTIPLIER = 3; 4042 private static final int SELECT_CURSOR_OFFSET = 16; 4043 private int mSelectX = 0; 4044 private int mSelectY = 0; 4045 private boolean mShiftIsPressed = false; 4046 private boolean mTrackballDown = false; 4047 private long mTrackballUpTime = 0; 4048 private long mLastCursorTime = 0; 4049 private Rect mLastCursorBounds; 4050 4051 // Set by default; BrowserActivity clears to interpret trackball data 4052 // directly for movement. Currently, the framework only passes 4053 // arrow key events, not trackball events, from one child to the next 4054 private boolean mMapTrackballToArrowKeys = true; 4055 4056 public void setMapTrackballToArrowKeys(boolean setMap) { 4057 mMapTrackballToArrowKeys = setMap; 4058 } 4059 4060 void resetTrackballTime() { 4061 mTrackballLastTime = 0; 4062 } 4063 4064 @Override 4065 public boolean onTrackballEvent(MotionEvent ev) { 4066 long time = ev.getEventTime(); 4067 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4068 if (ev.getY() > 0) pageDown(true); 4069 if (ev.getY() < 0) pageUp(true); 4070 return true; 4071 } 4072 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4073 if (mShiftIsPressed) { 4074 return true; // discard press if copy in progress 4075 } 4076 mTrackballDown = true; 4077 if (mNativeClass == 0) { 4078 return false; 4079 } 4080 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4081 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4082 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4083 nativeSelectBestAt(mLastCursorBounds); 4084 } 4085 if (DebugFlags.WEB_VIEW) { 4086 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4087 + " time=" + time 4088 + " mLastCursorTime=" + mLastCursorTime); 4089 } 4090 if (isInTouchMode()) requestFocusFromTouch(); 4091 return false; // let common code in onKeyDown at it 4092 } 4093 if (ev.getAction() == MotionEvent.ACTION_UP) { 4094 // LONG_PRESS_CENTER is set in common onKeyDown 4095 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4096 mTrackballDown = false; 4097 mTrackballUpTime = time; 4098 if (mShiftIsPressed) { 4099 if (mExtendSelection) { 4100 commitCopy(); 4101 } else { 4102 mExtendSelection = true; 4103 } 4104 return true; // discard press if copy in progress 4105 } 4106 if (DebugFlags.WEB_VIEW) { 4107 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4108 + " time=" + time 4109 ); 4110 } 4111 return false; // let common code in onKeyUp at it 4112 } 4113 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4114 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4115 return false; 4116 } 4117 if (mTrackballDown) { 4118 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4119 return true; // discard move if trackball is down 4120 } 4121 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4122 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4123 return true; 4124 } 4125 // TODO: alternatively we can do panning as touch does 4126 switchOutDrawHistory(); 4127 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4128 if (DebugFlags.WEB_VIEW) { 4129 Log.v(LOGTAG, "onTrackballEvent time=" 4130 + time + " last=" + mTrackballLastTime); 4131 } 4132 mTrackballFirstTime = time; 4133 mTrackballXMove = mTrackballYMove = 0; 4134 } 4135 mTrackballLastTime = time; 4136 if (DebugFlags.WEB_VIEW) { 4137 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4138 } 4139 mTrackballRemainsX += ev.getX(); 4140 mTrackballRemainsY += ev.getY(); 4141 doTrackball(time); 4142 return true; 4143 } 4144 4145 void moveSelection(float xRate, float yRate) { 4146 if (mNativeClass == 0) 4147 return; 4148 int width = getViewWidth(); 4149 int height = getViewHeight(); 4150 mSelectX += scaleTrackballX(xRate, width); 4151 mSelectY += scaleTrackballY(yRate, height); 4152 int maxX = width + mScrollX; 4153 int maxY = height + mScrollY; 4154 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 4155 , mSelectX)); 4156 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 4157 , mSelectY)); 4158 if (DebugFlags.WEB_VIEW) { 4159 Log.v(LOGTAG, "moveSelection" 4160 + " mSelectX=" + mSelectX 4161 + " mSelectY=" + mSelectY 4162 + " mScrollX=" + mScrollX 4163 + " mScrollY=" + mScrollY 4164 + " xRate=" + xRate 4165 + " yRate=" + yRate 4166 ); 4167 } 4168 nativeMoveSelection(viewToContentX(mSelectX), 4169 viewToContentY(mSelectY), mExtendSelection); 4170 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 4171 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4172 : 0; 4173 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 4174 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4175 : 0; 4176 pinScrollBy(scrollX, scrollY, true, 0); 4177 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 4178 requestRectangleOnScreen(select); 4179 invalidate(); 4180 } 4181 4182 private int scaleTrackballX(float xRate, int width) { 4183 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4184 int nextXMove = xMove; 4185 if (xMove > 0) { 4186 if (xMove > mTrackballXMove) { 4187 xMove -= mTrackballXMove; 4188 } 4189 } else if (xMove < mTrackballXMove) { 4190 xMove -= mTrackballXMove; 4191 } 4192 mTrackballXMove = nextXMove; 4193 return xMove; 4194 } 4195 4196 private int scaleTrackballY(float yRate, int height) { 4197 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 4198 int nextYMove = yMove; 4199 if (yMove > 0) { 4200 if (yMove > mTrackballYMove) { 4201 yMove -= mTrackballYMove; 4202 } 4203 } else if (yMove < mTrackballYMove) { 4204 yMove -= mTrackballYMove; 4205 } 4206 mTrackballYMove = nextYMove; 4207 return yMove; 4208 } 4209 4210 private int keyCodeToSoundsEffect(int keyCode) { 4211 switch(keyCode) { 4212 case KeyEvent.KEYCODE_DPAD_UP: 4213 return SoundEffectConstants.NAVIGATION_UP; 4214 case KeyEvent.KEYCODE_DPAD_RIGHT: 4215 return SoundEffectConstants.NAVIGATION_RIGHT; 4216 case KeyEvent.KEYCODE_DPAD_DOWN: 4217 return SoundEffectConstants.NAVIGATION_DOWN; 4218 case KeyEvent.KEYCODE_DPAD_LEFT: 4219 return SoundEffectConstants.NAVIGATION_LEFT; 4220 } 4221 throw new IllegalArgumentException("keyCode must be one of " + 4222 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 4223 "KEYCODE_DPAD_LEFT}."); 4224 } 4225 4226 private void doTrackball(long time) { 4227 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 4228 if (elapsed == 0) { 4229 elapsed = TRACKBALL_TIMEOUT; 4230 } 4231 float xRate = mTrackballRemainsX * 1000 / elapsed; 4232 float yRate = mTrackballRemainsY * 1000 / elapsed; 4233 if (mShiftIsPressed) { 4234 moveSelection(xRate, yRate); 4235 mTrackballRemainsX = mTrackballRemainsY = 0; 4236 return; 4237 } 4238 float ax = Math.abs(xRate); 4239 float ay = Math.abs(yRate); 4240 float maxA = Math.max(ax, ay); 4241 if (DebugFlags.WEB_VIEW) { 4242 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 4243 + " xRate=" + xRate 4244 + " yRate=" + yRate 4245 + " mTrackballRemainsX=" + mTrackballRemainsX 4246 + " mTrackballRemainsY=" + mTrackballRemainsY); 4247 } 4248 int width = mContentWidth - getViewWidth(); 4249 int height = mContentHeight - getViewHeight(); 4250 if (width < 0) width = 0; 4251 if (height < 0) height = 0; 4252 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 4253 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 4254 maxA = Math.max(ax, ay); 4255 int count = Math.max(0, (int) maxA); 4256 int oldScrollX = mScrollX; 4257 int oldScrollY = mScrollY; 4258 if (count > 0) { 4259 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 4260 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 4261 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 4262 KeyEvent.KEYCODE_DPAD_RIGHT; 4263 count = Math.min(count, TRACKBALL_MOVE_COUNT); 4264 if (DebugFlags.WEB_VIEW) { 4265 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 4266 + " count=" + count 4267 + " mTrackballRemainsX=" + mTrackballRemainsX 4268 + " mTrackballRemainsY=" + mTrackballRemainsY); 4269 } 4270 if (navHandledKey(selectKeyCode, count, false, time, false)) { 4271 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 4272 } 4273 mTrackballRemainsX = mTrackballRemainsY = 0; 4274 } 4275 if (count >= TRACKBALL_SCROLL_COUNT) { 4276 int xMove = scaleTrackballX(xRate, width); 4277 int yMove = scaleTrackballY(yRate, height); 4278 if (DebugFlags.WEB_VIEW) { 4279 Log.v(LOGTAG, "doTrackball pinScrollBy" 4280 + " count=" + count 4281 + " xMove=" + xMove + " yMove=" + yMove 4282 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 4283 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 4284 ); 4285 } 4286 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 4287 xMove = 0; 4288 } 4289 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 4290 yMove = 0; 4291 } 4292 if (xMove != 0 || yMove != 0) { 4293 pinScrollBy(xMove, yMove, true, 0); 4294 } 4295 mUserScroll = true; 4296 } 4297 } 4298 4299 private int computeMaxScrollY() { 4300 int maxContentH = computeVerticalScrollRange() + getTitleHeight(); 4301 return Math.max(maxContentH - getHeight(), getTitleHeight()); 4302 } 4303 4304 public void flingScroll(int vx, int vy) { 4305 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4306 int maxY = computeMaxScrollY(); 4307 4308 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 4309 invalidate(); 4310 } 4311 4312 private void doFling() { 4313 if (mVelocityTracker == null) { 4314 return; 4315 } 4316 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4317 int maxY = computeMaxScrollY(); 4318 4319 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 4320 int vx = (int) mVelocityTracker.getXVelocity(); 4321 int vy = (int) mVelocityTracker.getYVelocity(); 4322 4323 if (mSnapScrollMode != SNAP_NONE) { 4324 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_X_LOCK) { 4325 vy = 0; 4326 } else { 4327 vx = 0; 4328 } 4329 } 4330 4331 if (true /* EMG release: make our fling more like Maps' */) { 4332 // maps cuts their velocity in half 4333 vx = vx * 3 / 4; 4334 vy = vy * 3 / 4; 4335 } 4336 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 4337 WebViewCore.resumeUpdate(mWebViewCore); 4338 return; 4339 } 4340 float currentVelocity = mScroller.getCurrVelocity(); 4341 if (mLastVelocity > 0 && currentVelocity > 0) { 4342 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 4343 - Math.atan2(vy, vx))); 4344 final float circle = (float) (Math.PI) * 2.0f; 4345 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 4346 vx += currentVelocity * mLastVelX / mLastVelocity; 4347 vy += currentVelocity * mLastVelY / mLastVelocity; 4348 if (DebugFlags.WEB_VIEW) { 4349 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 4350 } 4351 } else if (DebugFlags.WEB_VIEW) { 4352 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 4353 } 4354 } else if (DebugFlags.WEB_VIEW) { 4355 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 4356 + " current=" + currentVelocity 4357 + " vx=" + vx + " vy=" + vy 4358 + " maxX=" + maxX + " maxY=" + maxY 4359 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 4360 } 4361 mLastVelX = vx; 4362 mLastVelY = vy; 4363 mLastVelocity = (float) Math.hypot(vx, vy); 4364 4365 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 4366 // TODO: duration is calculated based on velocity, if the range is 4367 // small, the animation will stop before duration is up. We may 4368 // want to calculate how long the animation is going to run to precisely 4369 // resume the webcore update. 4370 final int time = mScroller.getDuration(); 4371 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_UPDATE, time); 4372 awakenScrollBars(time); 4373 invalidate(); 4374 } 4375 4376 private boolean zoomWithPreview(float scale) { 4377 float oldScale = mActualScale; 4378 mInitialScrollX = mScrollX; 4379 mInitialScrollY = mScrollY; 4380 4381 // snap to DEFAULT_SCALE if it is close 4382 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 4383 scale = mDefaultScale; 4384 } 4385 4386 setNewZoomScale(scale, false); 4387 4388 if (oldScale != mActualScale) { 4389 // use mZoomPickerScale to see zoom preview first 4390 mZoomStart = SystemClock.uptimeMillis(); 4391 mInvInitialZoomScale = 1.0f / oldScale; 4392 mInvFinalZoomScale = 1.0f / mActualScale; 4393 mZoomScale = mActualScale; 4394 if (!mInZoomOverview) { 4395 mLastScale = scale; 4396 } 4397 invalidate(); 4398 return true; 4399 } else { 4400 return false; 4401 } 4402 } 4403 4404 /** 4405 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 4406 * in charge of installing this view to the view hierarchy. This view will 4407 * become visible when the user starts scrolling via touch and fade away if 4408 * the user does not interact with it. 4409 * <p/> 4410 * API version 3 introduces a built-in zoom mechanism that is shown 4411 * automatically by the MapView. This is the preferred approach for 4412 * showing the zoom UI. 4413 * 4414 * @deprecated The built-in zoom mechanism is preferred, see 4415 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 4416 */ 4417 @Deprecated 4418 public View getZoomControls() { 4419 if (!getSettings().supportZoom()) { 4420 Log.w(LOGTAG, "This WebView doesn't support zoom."); 4421 return null; 4422 } 4423 if (mZoomControls == null) { 4424 mZoomControls = createZoomControls(); 4425 4426 /* 4427 * need to be set to VISIBLE first so that getMeasuredHeight() in 4428 * {@link #onSizeChanged()} can return the measured value for proper 4429 * layout. 4430 */ 4431 mZoomControls.setVisibility(View.VISIBLE); 4432 mZoomControlRunnable = new Runnable() { 4433 public void run() { 4434 4435 /* Don't dismiss the controls if the user has 4436 * focus on them. Wait and check again later. 4437 */ 4438 if (!mZoomControls.hasFocus()) { 4439 mZoomControls.hide(); 4440 } else { 4441 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4442 mPrivateHandler.postDelayed(mZoomControlRunnable, 4443 ZOOM_CONTROLS_TIMEOUT); 4444 } 4445 } 4446 }; 4447 } 4448 return mZoomControls; 4449 } 4450 4451 private ExtendedZoomControls createZoomControls() { 4452 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 4453 , null); 4454 zoomControls.setOnZoomInClickListener(new OnClickListener() { 4455 public void onClick(View v) { 4456 // reset time out 4457 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4458 mPrivateHandler.postDelayed(mZoomControlRunnable, 4459 ZOOM_CONTROLS_TIMEOUT); 4460 zoomIn(); 4461 } 4462 }); 4463 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 4464 public void onClick(View v) { 4465 // reset time out 4466 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4467 mPrivateHandler.postDelayed(mZoomControlRunnable, 4468 ZOOM_CONTROLS_TIMEOUT); 4469 zoomOut(); 4470 } 4471 }); 4472 return zoomControls; 4473 } 4474 4475 /** 4476 * Gets the {@link ZoomButtonsController} which can be used to add 4477 * additional buttons to the zoom controls window. 4478 * 4479 * @return The instance of {@link ZoomButtonsController} used by this class, 4480 * or null if it is unavailable. 4481 * @hide 4482 */ 4483 public ZoomButtonsController getZoomButtonsController() { 4484 return mZoomButtonsController; 4485 } 4486 4487 /** 4488 * Perform zoom in in the webview 4489 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 4490 */ 4491 public boolean zoomIn() { 4492 // TODO: alternatively we can disallow this during draw history mode 4493 switchOutDrawHistory(); 4494 // Center zooming to the center of the screen. 4495 if (mInZoomOverview) { 4496 // if in overview mode, bring it back to normal mode 4497 mLastTouchX = getViewWidth() * .5f; 4498 mLastTouchY = getViewHeight() * .5f; 4499 doDoubleTap(); 4500 return true; 4501 } else { 4502 mZoomCenterX = getViewWidth() * .5f; 4503 mZoomCenterY = getViewHeight() * .5f; 4504 return zoomWithPreview(mActualScale * 1.25f); 4505 } 4506 } 4507 4508 /** 4509 * Perform zoom out in the webview 4510 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 4511 */ 4512 public boolean zoomOut() { 4513 // TODO: alternatively we can disallow this during draw history mode 4514 switchOutDrawHistory(); 4515 float scale = mActualScale * 0.8f; 4516 if (scale < (mMinZoomScale + 0.1f) 4517 && mWebViewCore.getSettings().getUseWideViewPort()) { 4518 // when zoom out to min scale, switch to overview mode 4519 doDoubleTap(); 4520 return true; 4521 } else { 4522 // Center zooming to the center of the screen. 4523 mZoomCenterX = getViewWidth() * .5f; 4524 mZoomCenterY = getViewHeight() * .5f; 4525 return zoomWithPreview(scale); 4526 } 4527 } 4528 4529 private void updateSelection() { 4530 if (mNativeClass == 0) { 4531 return; 4532 } 4533 // mLastTouchX and mLastTouchY are the point in the current viewport 4534 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 4535 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 4536 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 4537 contentX + mNavSlop, contentY + mNavSlop); 4538 nativeSelectBestAt(rect); 4539 } 4540 4541 /** 4542 * Scroll the focused text field/area to match the WebTextView 4543 * @param xPercent New x position of the WebTextView from 0 to 1. 4544 * @param y New y position of the WebTextView in view coordinates 4545 */ 4546 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 4547 if (!inEditingMode() || mWebViewCore == null) { 4548 return; 4549 } 4550 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 4551 // Since this position is relative to the top of the text input 4552 // field, we do not need to take the title bar's height into 4553 // consideration. 4554 viewToContentDimension(y), 4555 new Float(xPercent)); 4556 } 4557 4558 /** 4559 * Set our starting point and time for a drag from the WebTextView. 4560 */ 4561 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 4562 if (!inEditingMode()) { 4563 return; 4564 } 4565 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 4566 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 4567 mLastTouchTime = eventTime; 4568 if (!mScroller.isFinished()) { 4569 abortAnimation(); 4570 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 4571 } 4572 mSnapScrollMode = SNAP_NONE; 4573 mVelocityTracker = VelocityTracker.obtain(); 4574 mTouchMode = TOUCH_DRAG_START_MODE; 4575 } 4576 4577 /** 4578 * Given a motion event from the WebTextView, set its location to our 4579 * coordinates, and handle the event. 4580 */ 4581 /*package*/ boolean textFieldDrag(MotionEvent event) { 4582 if (!inEditingMode()) { 4583 return false; 4584 } 4585 mDragFromTextInput = true; 4586 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 4587 (float) (mWebTextView.getTop() - mScrollY)); 4588 boolean result = onTouchEvent(event); 4589 mDragFromTextInput = false; 4590 return result; 4591 } 4592 4593 /** 4594 * Do a touch up from a WebTextView. This will be handled by webkit to 4595 * change the selection. 4596 * @param event MotionEvent in the WebTextView's coordinates. 4597 */ 4598 /*package*/ void touchUpOnTextField(MotionEvent event) { 4599 if (!inEditingMode()) { 4600 return; 4601 } 4602 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 4603 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 4604 // In case the soft keyboard has been dismissed, bring it back up. 4605 InputMethodManager.getInstance(getContext()).showSoftInput(mWebTextView, 4606 0); 4607 if (nativeFocusNodePointer() != nativeCursorNodePointer()) { 4608 nativeMotionUp(x, y, mNavSlop); 4609 } 4610 nativeTextInputMotionUp(x, y); 4611 } 4612 4613 /*package*/ void shortPressOnTextField() { 4614 if (inEditingMode()) { 4615 View v = mWebTextView; 4616 int x = viewToContentX((v.getLeft() + v.getRight()) >> 1); 4617 int y = viewToContentY((v.getTop() + v.getBottom()) >> 1); 4618 nativeTextInputMotionUp(x, y); 4619 } 4620 } 4621 4622 private void doShortPress() { 4623 if (mNativeClass == 0) { 4624 return; 4625 } 4626 switchOutDrawHistory(); 4627 // mLastTouchX and mLastTouchY are the point in the current viewport 4628 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 4629 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 4630 if (nativeMotionUp(contentX, contentY, mNavSlop)) { 4631 if (mLogEvent) { 4632 Checkin.updateStats(mContext.getContentResolver(), 4633 Checkin.Stats.Tag.BROWSER_SNAP_CENTER, 1, 0.0); 4634 } 4635 } 4636 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 4637 playSoundEffect(SoundEffectConstants.CLICK); 4638 } 4639 } 4640 4641 private void doDoubleTap() { 4642 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 4643 return; 4644 } 4645 mZoomCenterX = mLastTouchX; 4646 mZoomCenterY = mLastTouchY; 4647 mInZoomOverview = !mInZoomOverview; 4648 // remove the zoom control after double tap 4649 WebSettings settings = getSettings(); 4650 if (settings.getBuiltInZoomControls()) { 4651 if (mZoomButtonsController.isVisible()) { 4652 mZoomButtonsController.setVisible(false); 4653 } 4654 } else { 4655 if (mZoomControlRunnable != null) { 4656 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4657 } 4658 if (mZoomControls != null) { 4659 mZoomControls.hide(); 4660 } 4661 } 4662 settings.setDoubleTapToastCount(0); 4663 if (mInZoomOverview) { 4664 // Force the titlebar fully reveal in overview mode 4665 if (mScrollY < getTitleHeight()) mScrollY = 0; 4666 zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth); 4667 } else { 4668 // mLastTouchX and mLastTouchY are the point in the current viewport 4669 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 4670 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 4671 int left = nativeGetBlockLeftEdge(contentX, contentY, mActualScale); 4672 if (left != NO_LEFTEDGE) { 4673 // add a 5pt padding to the left edge. Re-calculate the zoom 4674 // center so that the new scroll x will be on the left edge. 4675 mZoomCenterX = left < 5 ? 0 : (left - 5) * mLastScale 4676 * mActualScale / (mLastScale - mActualScale); 4677 } 4678 zoomWithPreview(mLastScale); 4679 } 4680 } 4681 4682 // Called by JNI to handle a touch on a node representing an email address, 4683 // address, or phone number 4684 private void overrideLoading(String url) { 4685 mCallbackProxy.uiOverrideUrlLoading(url); 4686 } 4687 4688 // called by JNI 4689 private void sendPluginState(int state) { 4690 WebViewCore.PluginStateData psd = new WebViewCore.PluginStateData(); 4691 psd.mFrame = nativeCursorFramePointer(); 4692 psd.mNode = nativeCursorNodePointer(); 4693 psd.mState = state; 4694 mWebViewCore.sendMessage(EventHub.PLUGIN_STATE, psd); 4695 } 4696 4697 @Override 4698 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 4699 boolean result = false; 4700 if (inEditingMode()) { 4701 result = mWebTextView.requestFocus(direction, 4702 previouslyFocusedRect); 4703 } else { 4704 result = super.requestFocus(direction, previouslyFocusedRect); 4705 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 4706 // For cases such as GMail, where we gain focus from a direction, 4707 // we want to move to the first available link. 4708 // FIXME: If there are no visible links, we may not want to 4709 int fakeKeyDirection = 0; 4710 switch(direction) { 4711 case View.FOCUS_UP: 4712 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 4713 break; 4714 case View.FOCUS_DOWN: 4715 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 4716 break; 4717 case View.FOCUS_LEFT: 4718 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 4719 break; 4720 case View.FOCUS_RIGHT: 4721 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 4722 break; 4723 default: 4724 return result; 4725 } 4726 if (mNativeClass != 0 && !nativeHasCursorNode()) { 4727 navHandledKey(fakeKeyDirection, 1, true, 0, true); 4728 } 4729 } 4730 } 4731 return result; 4732 } 4733 4734 @Override 4735 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 4736 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 4737 4738 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 4739 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 4740 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 4741 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 4742 4743 int measuredHeight = heightSize; 4744 int measuredWidth = widthSize; 4745 4746 // Grab the content size from WebViewCore. 4747 int contentHeight = contentToViewDimension(mContentHeight); 4748 int contentWidth = contentToViewDimension(mContentWidth); 4749 4750// Log.d(LOGTAG, "------- measure " + heightMode); 4751 4752 if (heightMode != MeasureSpec.EXACTLY) { 4753 mHeightCanMeasure = true; 4754 measuredHeight = contentHeight; 4755 if (heightMode == MeasureSpec.AT_MOST) { 4756 // If we are larger than the AT_MOST height, then our height can 4757 // no longer be measured and we should scroll internally. 4758 if (measuredHeight > heightSize) { 4759 measuredHeight = heightSize; 4760 mHeightCanMeasure = false; 4761 } 4762 } 4763 } else { 4764 mHeightCanMeasure = false; 4765 } 4766 if (mNativeClass != 0) { 4767 nativeSetHeightCanMeasure(mHeightCanMeasure); 4768 } 4769 // For the width, always use the given size unless unspecified. 4770 if (widthMode == MeasureSpec.UNSPECIFIED) { 4771 mWidthCanMeasure = true; 4772 measuredWidth = contentWidth; 4773 } else { 4774 mWidthCanMeasure = false; 4775 } 4776 4777 synchronized (this) { 4778 setMeasuredDimension(measuredWidth, measuredHeight); 4779 } 4780 } 4781 4782 @Override 4783 public boolean requestChildRectangleOnScreen(View child, 4784 Rect rect, 4785 boolean immediate) { 4786 rect.offset(child.getLeft() - child.getScrollX(), 4787 child.getTop() - child.getScrollY()); 4788 4789 int height = getViewHeightWithTitle(); 4790 int screenTop = mScrollY; 4791 int screenBottom = screenTop + height; 4792 4793 int scrollYDelta = 0; 4794 4795 if (rect.bottom > screenBottom) { 4796 int oneThirdOfScreenHeight = height / 3; 4797 if (rect.height() > 2 * oneThirdOfScreenHeight) { 4798 // If the rectangle is too tall to fit in the bottom two thirds 4799 // of the screen, place it at the top. 4800 scrollYDelta = rect.top - screenTop; 4801 } else { 4802 // If the rectangle will still fit on screen, we want its 4803 // top to be in the top third of the screen. 4804 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 4805 } 4806 } else if (rect.top < screenTop) { 4807 scrollYDelta = rect.top - screenTop; 4808 } 4809 4810 int width = getWidth() - getVerticalScrollbarWidth(); 4811 int screenLeft = mScrollX; 4812 int screenRight = screenLeft + width; 4813 4814 int scrollXDelta = 0; 4815 4816 if (rect.right > screenRight && rect.left > screenLeft) { 4817 if (rect.width() > width) { 4818 scrollXDelta += (rect.left - screenLeft); 4819 } else { 4820 scrollXDelta += (rect.right - screenRight); 4821 } 4822 } else if (rect.left < screenLeft) { 4823 scrollXDelta -= (screenLeft - rect.left); 4824 } 4825 4826 if ((scrollYDelta | scrollXDelta) != 0) { 4827 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 4828 } 4829 4830 return false; 4831 } 4832 4833 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 4834 String replace, int newStart, int newEnd) { 4835 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 4836 arg.mReplace = replace; 4837 arg.mNewStart = newStart; 4838 arg.mNewEnd = newEnd; 4839 mTextGeneration++; 4840 arg.mTextGeneration = mTextGeneration; 4841 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 4842 } 4843 4844 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 4845 if (nativeCursorWantsKeyEvents() && !nativeCursorMatchesFocus()) { 4846 mWebViewCore.sendMessage(EventHub.CLICK); 4847 if (mWebTextView.mOkayForFocusNotToMatch) { 4848 int select = nativeFocusCandidateIsTextField() ? 4849 nativeFocusCandidateMaxLength() : 0; 4850 setSelection(select, select); 4851 } 4852 } 4853 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 4854 arg.mEvent = event; 4855 arg.mCurrentText = currentText; 4856 // Increase our text generation number, and pass it to webcore thread 4857 mTextGeneration++; 4858 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 4859 // WebKit's document state is not saved until about to leave the page. 4860 // To make sure the host application, like Browser, has the up to date 4861 // document state when it goes to background, we force to save the 4862 // document state. 4863 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 4864 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 4865 cursorData(), 1000); 4866 } 4867 4868 /* package */ WebViewCore getWebViewCore() { 4869 return mWebViewCore; 4870 } 4871 4872 //------------------------------------------------------------------------- 4873 // Methods can be called from a separate thread, like WebViewCore 4874 // If it needs to call the View system, it has to send message. 4875 //------------------------------------------------------------------------- 4876 4877 /** 4878 * General handler to receive message coming from webkit thread 4879 */ 4880 class PrivateHandler extends Handler { 4881 @Override 4882 public void handleMessage(Message msg) { 4883 if (DebugFlags.WEB_VIEW) { 4884 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 4885 > INVAL_RECT_MSG_ID ? Integer.toString(msg.what) 4886 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 4887 } 4888 if (mWebViewCore == null) { 4889 // after WebView's destroy() is called, skip handling messages. 4890 return; 4891 } 4892 switch (msg.what) { 4893 case REMEMBER_PASSWORD: { 4894 mDatabase.setUsernamePassword( 4895 msg.getData().getString("host"), 4896 msg.getData().getString("username"), 4897 msg.getData().getString("password")); 4898 ((Message) msg.obj).sendToTarget(); 4899 break; 4900 } 4901 case NEVER_REMEMBER_PASSWORD: { 4902 mDatabase.setUsernamePassword( 4903 msg.getData().getString("host"), null, null); 4904 ((Message) msg.obj).sendToTarget(); 4905 break; 4906 } 4907 case SWITCH_TO_SHORTPRESS: { 4908 // if mPreventDrag is not confirmed, treat it as no so that 4909 // it won't block panning the page. 4910 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 4911 mPreventDrag = PREVENT_DRAG_NO; 4912 } 4913 if (mTouchMode == TOUCH_INIT_MODE) { 4914 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 4915 updateSelection(); 4916 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4917 mTouchMode = TOUCH_DONE_MODE; 4918 } 4919 break; 4920 } 4921 case SWITCH_TO_LONGPRESS: { 4922 if (mPreventDrag == PREVENT_DRAG_NO) { 4923 mTouchMode = TOUCH_DONE_MODE; 4924 performLongClick(); 4925 rebuildWebTextView(); 4926 } 4927 break; 4928 } 4929 case RELEASE_SINGLE_TAP: { 4930 if (mPreventDrag == PREVENT_DRAG_NO) { 4931 mTouchMode = TOUCH_DONE_MODE; 4932 doShortPress(); 4933 } 4934 break; 4935 } 4936 case SCROLL_BY_MSG_ID: 4937 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 4938 break; 4939 case SYNC_SCROLL_TO_MSG_ID: 4940 if (mUserScroll) { 4941 // if user has scrolled explicitly, don't sync the 4942 // scroll position any more 4943 mUserScroll = false; 4944 break; 4945 } 4946 // fall through 4947 case SCROLL_TO_MSG_ID: 4948 if (setContentScrollTo(msg.arg1, msg.arg2)) { 4949 // if we can't scroll to the exact position due to pin, 4950 // send a message to WebCore to re-scroll when we get a 4951 // new picture 4952 mUserScroll = false; 4953 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 4954 msg.arg1, msg.arg2); 4955 } 4956 break; 4957 case SPAWN_SCROLL_TO_MSG_ID: 4958 spawnContentScrollTo(msg.arg1, msg.arg2); 4959 break; 4960 case NEW_PICTURE_MSG_ID: { 4961 WebSettings settings = mWebViewCore.getSettings(); 4962 // called for new content 4963 final int viewWidth = getViewWidth(); 4964 final WebViewCore.DrawData draw = 4965 (WebViewCore.DrawData) msg.obj; 4966 final Point viewSize = draw.mViewPoint; 4967 boolean useWideViewport = settings.getUseWideViewPort(); 4968 WebViewCore.RestoreState restoreState = draw.mRestoreState; 4969 if (restoreState != null) { 4970 mInZoomOverview = false; 4971 mLastScale = restoreState.mTextWrapScale; 4972 if (restoreState.mMinScale == 0) { 4973 if (restoreState.mMobileSite) { 4974 if (draw.mMinPrefWidth > 4975 Math.max(0, draw.mViewPoint.x)) { 4976 mMinZoomScale = (float) viewWidth 4977 / draw.mMinPrefWidth; 4978 mMinZoomScaleFixed = false; 4979 } else { 4980 mMinZoomScale = restoreState.mDefaultScale; 4981 mMinZoomScaleFixed = true; 4982 } 4983 } else { 4984 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 4985 mMinZoomScaleFixed = false; 4986 } 4987 } else { 4988 mMinZoomScale = restoreState.mMinScale; 4989 mMinZoomScaleFixed = true; 4990 } 4991 if (restoreState.mMaxScale == 0) { 4992 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 4993 } else { 4994 mMaxZoomScale = restoreState.mMaxScale; 4995 } 4996 setNewZoomScale(mLastScale, false); 4997 setContentScrollTo(restoreState.mScrollX, 4998 restoreState.mScrollY); 4999 if (useWideViewport 5000 && settings.getLoadWithOverviewMode()) { 5001 if (restoreState.mViewScale == 0 5002 || (restoreState.mMobileSite 5003 && mMinZoomScale < restoreState.mDefaultScale)) { 5004 mInZoomOverview = true; 5005 } 5006 } 5007 // As we are on a new page, remove the WebTextView. This 5008 // is necessary for page loads driven by webkit, and in 5009 // particular when the user was on a password field, so 5010 // the WebTextView was visible. 5011 clearTextEntry(); 5012 } 5013 // We update the layout (i.e. request a layout from the 5014 // view system) if the last view size that we sent to 5015 // WebCore matches the view size of the picture we just 5016 // received in the fixed dimension. 5017 final boolean updateLayout = viewSize.x == mLastWidthSent 5018 && viewSize.y == mLastHeightSent; 5019 recordNewContentSize(draw.mWidthHeight.x, 5020 draw.mWidthHeight.y 5021 + (mFindIsUp ? mFindHeight : 0), updateLayout); 5022 if (DebugFlags.WEB_VIEW) { 5023 Rect b = draw.mInvalRegion.getBounds(); 5024 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 5025 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 5026 } 5027 invalidateContentRect(draw.mInvalRegion.getBounds()); 5028 if (mPictureListener != null) { 5029 mPictureListener.onNewPicture(WebView.this, capturePicture()); 5030 } 5031 if (useWideViewport) { 5032 mZoomOverviewWidth = Math.max(draw.mMinPrefWidth, 5033 draw.mViewPoint.x); 5034 } 5035 if (!mMinZoomScaleFixed) { 5036 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 5037 } 5038 if (!mDrawHistory && mInZoomOverview) { 5039 // fit the content width to the current view. Ignore 5040 // the rounding error case. 5041 if (Math.abs((viewWidth * mInvActualScale) 5042 - mZoomOverviewWidth) > 1) { 5043 setNewZoomScale((float) viewWidth 5044 / mZoomOverviewWidth, false); 5045 } 5046 } 5047 break; 5048 } 5049 case WEBCORE_INITIALIZED_MSG_ID: 5050 // nativeCreate sets mNativeClass to a non-zero value 5051 nativeCreate(msg.arg1); 5052 break; 5053 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 5054 // Make sure that the textfield is currently focused 5055 // and representing the same node as the pointer. 5056 if (inEditingMode() && 5057 mWebTextView.isSameTextField(msg.arg1)) { 5058 if (msg.getData().getBoolean("password")) { 5059 Spannable text = (Spannable) mWebTextView.getText(); 5060 int start = Selection.getSelectionStart(text); 5061 int end = Selection.getSelectionEnd(text); 5062 mWebTextView.setInPassword(true); 5063 // Restore the selection, which may have been 5064 // ruined by setInPassword. 5065 Spannable pword = 5066 (Spannable) mWebTextView.getText(); 5067 Selection.setSelection(pword, start, end); 5068 // If the text entry has created more events, ignore 5069 // this one. 5070 } else if (msg.arg2 == mTextGeneration) { 5071 mWebTextView.setTextAndKeepSelection( 5072 (String) msg.obj); 5073 } 5074 } 5075 break; 5076 case UPDATE_TEXT_SELECTION_MSG_ID: 5077 if (inEditingMode() 5078 && mWebTextView.isSameTextField(msg.arg1) 5079 && msg.arg2 == mTextGeneration) { 5080 WebViewCore.TextSelectionData tData 5081 = (WebViewCore.TextSelectionData) msg.obj; 5082 mWebTextView.setSelectionFromWebKit(tData.mStart, 5083 tData.mEnd); 5084 } 5085 break; 5086 case MOVE_OUT_OF_PLUGIN: 5087 if (nativePluginEatsNavKey()) { 5088 navHandledKey(msg.arg1, 1, false, 0, true); 5089 } 5090 break; 5091 case UPDATE_TEXT_ENTRY_MSG_ID: 5092 // this is sent after finishing resize in WebViewCore. Make 5093 // sure the text edit box is still on the screen. 5094 if (inEditingMode() && nativeCursorIsTextInput()) { 5095 mWebTextView.bringIntoView(); 5096 rebuildWebTextView(); 5097 } 5098 break; 5099 case CLEAR_TEXT_ENTRY: 5100 clearTextEntry(); 5101 break; 5102 case INVAL_RECT_MSG_ID: { 5103 Rect r = (Rect)msg.obj; 5104 if (r == null) { 5105 invalidate(); 5106 } else { 5107 // we need to scale r from content into view coords, 5108 // which viewInvalidate() does for us 5109 viewInvalidate(r.left, r.top, r.right, r.bottom); 5110 } 5111 break; 5112 } 5113 case REQUEST_FORM_DATA: 5114 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 5115 if (mWebTextView.isSameTextField(msg.arg1)) { 5116 mWebTextView.setAdapterCustom(adapter); 5117 } 5118 break; 5119 case UPDATE_CLIPBOARD: 5120 String str = (String) msg.obj; 5121 if (DebugFlags.WEB_VIEW) { 5122 Log.v(LOGTAG, "UPDATE_CLIPBOARD " + str); 5123 } 5124 try { 5125 IClipboard clip = IClipboard.Stub.asInterface( 5126 ServiceManager.getService("clipboard")); 5127 clip.setClipboardText(str); 5128 } catch (android.os.RemoteException e) { 5129 Log.e(LOGTAG, "Clipboard failed", e); 5130 } 5131 break; 5132 case RESUME_WEBCORE_UPDATE: 5133 WebViewCore.resumeUpdate(mWebViewCore); 5134 break; 5135 5136 case LONG_PRESS_CENTER: 5137 // as this is shared by keydown and trackballdown, reset all 5138 // the states 5139 mGotCenterDown = false; 5140 mTrackballDown = false; 5141 // LONG_PRESS_CENTER is sent as a delayed message. If we 5142 // switch to windows overview, the WebView will be 5143 // temporarily removed from the view system. In that case, 5144 // do nothing. 5145 if (getParent() != null) { 5146 performLongClick(); 5147 } 5148 break; 5149 5150 case WEBCORE_NEED_TOUCH_EVENTS: 5151 mForwardTouchEvents = (msg.arg1 != 0); 5152 break; 5153 5154 case PREVENT_TOUCH_ID: 5155 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 5156 // dont override if mPreventDrag has been set to no due 5157 // to time out 5158 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5159 mPreventDrag = msg.arg2 == 1 ? PREVENT_DRAG_YES 5160 : PREVENT_DRAG_NO; 5161 if (mPreventDrag == PREVENT_DRAG_YES) { 5162 mTouchMode = TOUCH_DONE_MODE; 5163 } 5164 } 5165 } 5166 break; 5167 5168 case REQUEST_KEYBOARD: 5169 if (msg.arg1 == 0) { 5170 hideSoftKeyboard(); 5171 } else { 5172 displaySoftKeyboard(false); 5173 } 5174 break; 5175 5176 default: 5177 super.handleMessage(msg); 5178 break; 5179 } 5180 } 5181 } 5182 5183 // Class used to use a dropdown for a <select> element 5184 private class InvokeListBox implements Runnable { 5185 // Whether the listbox allows multiple selection. 5186 private boolean mMultiple; 5187 // Passed in to a list with multiple selection to tell 5188 // which items are selected. 5189 private int[] mSelectedArray; 5190 // Passed in to a list with single selection to tell 5191 // where the initial selection is. 5192 private int mSelection; 5193 5194 private Container[] mContainers; 5195 5196 // Need these to provide stable ids to my ArrayAdapter, 5197 // which normally does not have stable ids. (Bug 1250098) 5198 private class Container extends Object { 5199 String mString; 5200 boolean mEnabled; 5201 int mId; 5202 5203 public String toString() { 5204 return mString; 5205 } 5206 } 5207 5208 /** 5209 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 5210 * and allow filtering. 5211 */ 5212 private class MyArrayListAdapter extends ArrayAdapter<Container> { 5213 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 5214 super(context, 5215 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 5216 com.android.internal.R.layout.select_dialog_singlechoice, 5217 objects); 5218 } 5219 5220 @Override 5221 public boolean hasStableIds() { 5222 // AdapterView's onChanged method uses this to determine whether 5223 // to restore the old state. Return false so that the old (out 5224 // of date) state does not replace the new, valid state. 5225 return false; 5226 } 5227 5228 private Container item(int position) { 5229 if (position < 0 || position >= getCount()) { 5230 return null; 5231 } 5232 return (Container) getItem(position); 5233 } 5234 5235 @Override 5236 public long getItemId(int position) { 5237 Container item = item(position); 5238 if (item == null) { 5239 return -1; 5240 } 5241 return item.mId; 5242 } 5243 5244 @Override 5245 public boolean areAllItemsEnabled() { 5246 return false; 5247 } 5248 5249 @Override 5250 public boolean isEnabled(int position) { 5251 Container item = item(position); 5252 if (item == null) { 5253 return false; 5254 } 5255 return item.mEnabled; 5256 } 5257 } 5258 5259 private InvokeListBox(String[] array, 5260 boolean[] enabled, int[] selected) { 5261 mMultiple = true; 5262 mSelectedArray = selected; 5263 5264 int length = array.length; 5265 mContainers = new Container[length]; 5266 for (int i = 0; i < length; i++) { 5267 mContainers[i] = new Container(); 5268 mContainers[i].mString = array[i]; 5269 mContainers[i].mEnabled = enabled[i]; 5270 mContainers[i].mId = i; 5271 } 5272 } 5273 5274 private InvokeListBox(String[] array, boolean[] enabled, int 5275 selection) { 5276 mSelection = selection; 5277 mMultiple = false; 5278 5279 int length = array.length; 5280 mContainers = new Container[length]; 5281 for (int i = 0; i < length; i++) { 5282 mContainers[i] = new Container(); 5283 mContainers[i].mString = array[i]; 5284 mContainers[i].mEnabled = enabled[i]; 5285 mContainers[i].mId = i; 5286 } 5287 } 5288 5289 /* 5290 * Whenever the data set changes due to filtering, this class ensures 5291 * that the checked item remains checked. 5292 */ 5293 private class SingleDataSetObserver extends DataSetObserver { 5294 private long mCheckedId; 5295 private ListView mListView; 5296 private Adapter mAdapter; 5297 5298 /* 5299 * Create a new observer. 5300 * @param id The ID of the item to keep checked. 5301 * @param l ListView for getting and clearing the checked states 5302 * @param a Adapter for getting the IDs 5303 */ 5304 public SingleDataSetObserver(long id, ListView l, Adapter a) { 5305 mCheckedId = id; 5306 mListView = l; 5307 mAdapter = a; 5308 } 5309 5310 public void onChanged() { 5311 // The filter may have changed which item is checked. Find the 5312 // item that the ListView thinks is checked. 5313 int position = mListView.getCheckedItemPosition(); 5314 long id = mAdapter.getItemId(position); 5315 if (mCheckedId != id) { 5316 // Clear the ListView's idea of the checked item, since 5317 // it is incorrect 5318 mListView.clearChoices(); 5319 // Search for mCheckedId. If it is in the filtered list, 5320 // mark it as checked 5321 int count = mAdapter.getCount(); 5322 for (int i = 0; i < count; i++) { 5323 if (mAdapter.getItemId(i) == mCheckedId) { 5324 mListView.setItemChecked(i, true); 5325 break; 5326 } 5327 } 5328 } 5329 } 5330 5331 public void onInvalidate() {} 5332 } 5333 5334 public void run() { 5335 final ListView listView = (ListView) LayoutInflater.from(mContext) 5336 .inflate(com.android.internal.R.layout.select_dialog, null); 5337 final MyArrayListAdapter adapter = new 5338 MyArrayListAdapter(mContext, mContainers, mMultiple); 5339 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 5340 .setView(listView).setCancelable(true) 5341 .setInverseBackgroundForced(true); 5342 5343 if (mMultiple) { 5344 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 5345 public void onClick(DialogInterface dialog, int which) { 5346 mWebViewCore.sendMessage( 5347 EventHub.LISTBOX_CHOICES, 5348 adapter.getCount(), 0, 5349 listView.getCheckedItemPositions()); 5350 }}); 5351 b.setNegativeButton(android.R.string.cancel, 5352 new DialogInterface.OnClickListener() { 5353 public void onClick(DialogInterface dialog, int which) { 5354 mWebViewCore.sendMessage( 5355 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5356 }}); 5357 } 5358 final AlertDialog dialog = b.create(); 5359 listView.setAdapter(adapter); 5360 listView.setFocusableInTouchMode(true); 5361 // There is a bug (1250103) where the checks in a ListView with 5362 // multiple items selected are associated with the positions, not 5363 // the ids, so the items do not properly retain their checks when 5364 // filtered. Do not allow filtering on multiple lists until 5365 // that bug is fixed. 5366 5367 listView.setTextFilterEnabled(!mMultiple); 5368 if (mMultiple) { 5369 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 5370 int length = mSelectedArray.length; 5371 for (int i = 0; i < length; i++) { 5372 listView.setItemChecked(mSelectedArray[i], true); 5373 } 5374 } else { 5375 listView.setOnItemClickListener(new OnItemClickListener() { 5376 public void onItemClick(AdapterView parent, View v, 5377 int position, long id) { 5378 mWebViewCore.sendMessage( 5379 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 5380 dialog.dismiss(); 5381 } 5382 }); 5383 if (mSelection != -1) { 5384 listView.setSelection(mSelection); 5385 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 5386 listView.setItemChecked(mSelection, true); 5387 DataSetObserver observer = new SingleDataSetObserver( 5388 adapter.getItemId(mSelection), listView, adapter); 5389 adapter.registerDataSetObserver(observer); 5390 } 5391 } 5392 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 5393 public void onCancel(DialogInterface dialog) { 5394 mWebViewCore.sendMessage( 5395 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5396 } 5397 }); 5398 dialog.show(); 5399 } 5400 } 5401 5402 /* 5403 * Request a dropdown menu for a listbox with multiple selection. 5404 * 5405 * @param array Labels for the listbox. 5406 * @param enabledArray Which positions are enabled. 5407 * @param selectedArray Which positions are initally selected. 5408 */ 5409 void requestListBox(String[] array, boolean[]enabledArray, int[] 5410 selectedArray) { 5411 mPrivateHandler.post( 5412 new InvokeListBox(array, enabledArray, selectedArray)); 5413 } 5414 5415 /* 5416 * Request a dropdown menu for a listbox with single selection or a single 5417 * <select> element. 5418 * 5419 * @param array Labels for the listbox. 5420 * @param enabledArray Which positions are enabled. 5421 * @param selection Which position is initally selected. 5422 */ 5423 void requestListBox(String[] array, boolean[]enabledArray, int selection) { 5424 mPrivateHandler.post( 5425 new InvokeListBox(array, enabledArray, selection)); 5426 } 5427 5428 // called by JNI 5429 private void sendMoveMouse(int frame, int node, int x, int y) { 5430 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 5431 new WebViewCore.CursorData(frame, node, x, y)); 5432 } 5433 5434 /* 5435 * Send a mouse move event to the webcore thread. 5436 * 5437 * @param removeFocus Pass true if the "mouse" cursor is now over a node 5438 * which wants key events, but it is not the focus. This 5439 * will make the visual appear as though nothing is in 5440 * focus. Remove the WebTextView, if present, and stop 5441 * drawing the blinking caret. 5442 * called by JNI 5443 */ 5444 private void sendMoveMouseIfLatest(boolean removeFocus) { 5445 if (removeFocus) { 5446 clearTextEntry(); 5447 setFocusControllerInactive(); 5448 } 5449 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 5450 cursorData()); 5451 } 5452 5453 // called by JNI 5454 private void sendMotionUp(int touchGeneration, 5455 int frame, int node, int x, int y) { 5456 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 5457 touchUpData.mMoveGeneration = touchGeneration; 5458 touchUpData.mFrame = frame; 5459 touchUpData.mNode = node; 5460 touchUpData.mX = x; 5461 touchUpData.mY = y; 5462 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 5463 } 5464 5465 5466 private int getScaledMaxXScroll() { 5467 int width; 5468 if (mHeightCanMeasure == false) { 5469 width = getViewWidth() / 4; 5470 } else { 5471 Rect visRect = new Rect(); 5472 calcOurVisibleRect(visRect); 5473 width = visRect.width() / 2; 5474 } 5475 // FIXME the divisor should be retrieved from somewhere 5476 return viewToContentX(width); 5477 } 5478 5479 private int getScaledMaxYScroll() { 5480 int height; 5481 if (mHeightCanMeasure == false) { 5482 height = getViewHeight() / 4; 5483 } else { 5484 Rect visRect = new Rect(); 5485 calcOurVisibleRect(visRect); 5486 height = visRect.height() / 2; 5487 } 5488 // FIXME the divisor should be retrieved from somewhere 5489 // the closest thing today is hard-coded into ScrollView.java 5490 // (from ScrollView.java, line 363) int maxJump = height/2; 5491 return Math.round(height * mInvActualScale); 5492 } 5493 5494 /** 5495 * Called by JNI to invalidate view 5496 */ 5497 private void viewInvalidate() { 5498 invalidate(); 5499 } 5500 5501 // return true if the key was handled 5502 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 5503 long time, boolean ignorePlugin) { 5504 if (mNativeClass == 0) { 5505 return false; 5506 } 5507 if (ignorePlugin == false && nativePluginEatsNavKey()) { 5508 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 5509 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 5510 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 5511 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 5512 , 0, 0, 0); 5513 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5514 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5515 return true; 5516 } 5517 mLastCursorTime = time; 5518 mLastCursorBounds = nativeGetCursorRingBounds(); 5519 boolean keyHandled 5520 = nativeMoveCursor(keyCode, count, noScroll) == false; 5521 if (DebugFlags.WEB_VIEW) { 5522 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 5523 + " mLastCursorTime=" + mLastCursorTime 5524 + " handled=" + keyHandled); 5525 } 5526 if (keyHandled == false || mHeightCanMeasure == false) { 5527 return keyHandled; 5528 } 5529 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 5530 if (contentCursorRingBounds.isEmpty()) return keyHandled; 5531 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 5532 Rect visRect = new Rect(); 5533 calcOurVisibleRect(visRect); 5534 Rect outset = new Rect(visRect); 5535 int maxXScroll = visRect.width() / 2; 5536 int maxYScroll = visRect.height() / 2; 5537 outset.inset(-maxXScroll, -maxYScroll); 5538 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 5539 return keyHandled; 5540 } 5541 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 5542 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 5543 maxXScroll); 5544 if (maxH > 0) { 5545 pinScrollBy(maxH, 0, true, 0); 5546 } else { 5547 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 5548 -maxXScroll); 5549 if (maxH < 0) { 5550 pinScrollBy(maxH, 0, true, 0); 5551 } 5552 } 5553 if (mLastCursorBounds.isEmpty()) return keyHandled; 5554 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 5555 return keyHandled; 5556 } 5557 if (DebugFlags.WEB_VIEW) { 5558 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 5559 + contentCursorRingBounds); 5560 } 5561 requestRectangleOnScreen(viewCursorRingBounds); 5562 mUserScroll = true; 5563 return keyHandled; 5564 } 5565 5566 /** 5567 * Set the background color. It's white by default. Pass 5568 * zero to make the view transparent. 5569 * @param color the ARGB color described by Color.java 5570 */ 5571 public void setBackgroundColor(int color) { 5572 mBackgroundColor = color; 5573 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 5574 } 5575 5576 public void debugDump() { 5577 nativeDebugDump(); 5578 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 5579 } 5580 5581 /** 5582 * Update our cache with updatedText. 5583 * @param updatedText The new text to put in our cache. 5584 */ 5585 /* package */ void updateCachedTextfield(String updatedText) { 5586 // Also place our generation number so that when we look at the cache 5587 // we recognize that it is up to date. 5588 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 5589 } 5590 5591 /* package */ native void nativeClearCursor(); 5592 private native void nativeCreate(int ptr); 5593 private native int nativeCursorFramePointer(); 5594 private native Rect nativeCursorNodeBounds(); 5595 /* package */ native int nativeCursorNodePointer(); 5596 /* package */ native boolean nativeCursorMatchesFocus(); 5597 private native boolean nativeCursorIntersects(Rect visibleRect); 5598 private native boolean nativeCursorIsAnchor(); 5599 private native boolean nativeCursorIsPlugin(); 5600 private native boolean nativeCursorIsTextInput(); 5601 private native Point nativeCursorPosition(); 5602 private native String nativeCursorText(); 5603 /** 5604 * Returns true if the native cursor node says it wants to handle key events 5605 * (ala plugins). This can only be called if mNativeClass is non-zero! 5606 */ 5607 private native boolean nativeCursorWantsKeyEvents(); 5608 private native void nativeDebugDump(); 5609 private native void nativeDestroy(); 5610 private native void nativeDrawCursorRing(Canvas content); 5611 private native void nativeDrawMatches(Canvas canvas); 5612 private native void nativeDrawSelection(Canvas content, float scale, 5613 int offset, int x, int y, boolean extendSelection); 5614 private native void nativeDrawSelectionRegion(Canvas content); 5615 private native void nativeDumpDisplayTree(String urlOrNull); 5616 private native int nativeFindAll(String findLower, String findUpper); 5617 private native void nativeFindNext(boolean forward); 5618 private native boolean nativeFocusCandidateIsPassword(); 5619 private native boolean nativeFocusCandidateIsRtlText(); 5620 private native boolean nativeFocusCandidateIsTextField(); 5621 private native boolean nativeFocusCandidateIsTextInput(); 5622 private native int nativeFocusCandidateMaxLength(); 5623 /* package */ native String nativeFocusCandidateName(); 5624 private native Rect nativeFocusCandidateNodeBounds(); 5625 /* package */ native int nativeFocusCandidatePointer(); 5626 private native String nativeFocusCandidateText(); 5627 private native int nativeFocusCandidateTextSize(); 5628 /* package */ native int nativeFocusNodePointer(); 5629 private native Rect nativeGetCursorRingBounds(); 5630 private native Region nativeGetSelection(); 5631 private native boolean nativeHasCursorNode(); 5632 private native boolean nativeHasFocusNode(); 5633 private native void nativeHideCursor(); 5634 private native String nativeImageURI(int x, int y); 5635 private native void nativeInstrumentReport(); 5636 /* package */ native void nativeMoveCursorToNextTextInput(); 5637 // return true if the page has been scrolled 5638 private native boolean nativeMotionUp(int x, int y, int slop); 5639 // returns false if it handled the key 5640 private native boolean nativeMoveCursor(int keyCode, int count, 5641 boolean noScroll); 5642 private native int nativeMoveGeneration(); 5643 private native void nativeMoveSelection(int x, int y, 5644 boolean extendSelection); 5645 private native boolean nativePluginEatsNavKey(); 5646 // Like many other of our native methods, you must make sure that 5647 // mNativeClass is not null before calling this method. 5648 private native void nativeRecordButtons(boolean focused, 5649 boolean pressed, boolean invalidate); 5650 private native void nativeSelectBestAt(Rect rect); 5651 private native void nativeSetFindIsDown(); 5652 private native void nativeSetFollowedLink(boolean followed); 5653 private native void nativeSetHeightCanMeasure(boolean measure); 5654 // Returns a value corresponding to CachedFrame::ImeAction 5655 /* package */ native int nativeTextFieldAction(); 5656 /** 5657 * Perform a click on a currently focused text input. Since it is already 5658 * focused, there is no need to go through the nativeMotionUp code, which 5659 * may change the Cursor. 5660 */ 5661 private native void nativeTextInputMotionUp(int x, int y); 5662 private native int nativeTextGeneration(); 5663 // Never call this version except by updateCachedTextfield(String) - 5664 // we always want to pass in our generation number. 5665 private native void nativeUpdateCachedTextfield(String updatedText, 5666 int generation); 5667 private native void nativeUpdatePluginReceivesEvents(); 5668 // return NO_LEFTEDGE means failure. 5669 private static final int NO_LEFTEDGE = -1; 5670 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 5671} 5672